docs(apk): recherche prete, retour apres copie, grace de 2 min, bouton 2FA

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

AndroidManifest.template.xml

@@ -31,6 +31,9 @@
          BiometricPrompt n'existe pas encore. -->
     <uses-permission android:name="android.permission.USE_BIOMETRIC" />
     <uses-permission android:name="android.permission.USE_FINGERPRINT" />
+    <!-- Scanner du QR des reglages de synchro, demandee au premier appui. -->
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-feature android:name="android.hardware.camera" android:required="false" />
     <uses-feature android:glEsVersion="0x00020000" android:required="true"/>
     <queries>
 <%queries-child-elements%>
@@ -93,6 +96,14 @@
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <!-- Lien pmserver://sync?u=&t= du QR affiche par le poste : le
+                 scanner du telephone l'ouvre directement dans l'app. -->
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="pmserver" android:host="sync" />
+            </intent-filter>
         </activity>
         <!-- FMX n'affiche pas BiometricPrompt depuis notre NativeActivity : il
              lance SA PROPRE activite, qui heberge le fragment androidx. Elle

CLAUDE.md

@@ -283,6 +283,38 @@ Détails :
   Le cadre est peint dans `WM_ERASEBKGND` plutôt que par `WS_BORDER`, qui se
   sert dans les couleurs système.
 
+### Réglages de la barrette (2026-09-18)
+
+**Settings → onglet Fill bar**, et le **clic droit** sur la barrette pour les
+mêmes choix au plus court.
+
+- **Boutons au choix** (`lazyButtons`, liste ordonnée) : Full, Password, 2FA,
+  **Add** (= `Ctrl+Shift+A`, nouvelle entrée depuis la fenêtre en avant),
+  **Search** (= `Ctrl+Shift+Q`), Open, **Settings** (ouvre cet onglet). Le `X`
+  est toujours là. `'none'` = aucun bouton choisi (liste vide ≠ liste par défaut).
+  Add et Search appellent **les mêmes corps que les raccourcis**, extraits en
+  `FireNewEntryRequest` / `FireQuickSearchRequest` — une seule capture de la
+  fenêtre cible, deux gestes. `NOACTIVATE` les rend justes : la fenêtre en avant
+  au clic est bien celle de l'utilisateur.
+- **Icônes ou texte** (`lazyIcons`) : glyphes de la police **Segoe MDL2 Assets**
+  (Windows 10/11), rien à embarquer, couleur du thème comme un mot. Info-bulles
+  (`TOOLTIPS_CLASS`, `TTS_ALWAYSTIP` car la barrette n'est jamais active) sur
+  chaque bouton, dans les deux modes. **La largeur de la barrette se calcule**
+  (`FLazyW`) : elle dépend des boutons et du mode.
+- **Tout en prefs DPAPI**, pas dans `settings_json` : la barrette s'allume coffre
+  fermé. Pont : `fillbar/get` → `Bridge.onFillBar({on,buttons,icons,alpha})`,
+  `fillbar/set?on=&buttons=&icons=&alpha=`. Rien de secret dedans.
+- **Reconstruire = `ReloadLazyBar`, POSTÉ** (`WM_LAZY_RELOAD`) : le clic droit
+  vient de la barrette, qu'on ne détruit pas depuis son propre gestionnaire
+  (même raison que le `X`).
+- **L'onglet suit la barrette** : un changement par clic droit ou par le menu du
+  tray déclenche `OnFillBarChanged` → la page relit `fillbar/get`. Gardé par
+  `FBrowserInitialized` : `RestoreLazyBar` passe par là au démarrage.
+- **Settings depuis la barrette** (bouton ou clic droit → *Fill bar
+  settings...*) : la fenêtre revient, puis les réglages s'ouvrent **par-dessus**
+  une entrée en cours d'édition, qui reste intacte dessous (Échap ferme d'abord
+  les réglages). Coffre verrouillé : message, pas de réglages.
+
 ## Licences (`PM.Licence`)
 
 Verification **hors ligne** d'une licence signee ECDSA P-256. Une licence est
@@ -459,6 +491,69 @@ en dix minutes serait le mauvais echange. Le but est de tenir le mobile attache
 a un poste paye, pas de resister a une attaque — l'APK ne peut pas resister, et
 faire semblant couterait plus que de l'admettre.
 
+**Le reste du travail Android est dans
+[android-client/README.md](android-client/README.md)**, tenu a jour le
+2026-09-17 : les trois facons d'ouvrir le coffre (verrouillage d'ecran, code
+d'application, mot de passe), la copie de secours `vault-recover.bin` qui
+survit au schema retire, le scanner de QR (`ThirdParty/ZXing`), le define
+`AllowCreateLocal` — creer un coffre sur le telephone est reserve au debogage —
+et le correctif du manifeste, dont l'APK **release n'est plus `debuggable`**.
+
+### Deuxieme couche : l'API refuse sans licence (`PM.LicenceGate`)
+
+La premiere couche (l'ecran d'activation) ne consultait qu'un branchement,
+`IsLicensed` ; le rapiecer ouvrait tout, l'API ne demandant rien. **Chaque route
+de `PM.Router` passe maintenant par `ApiLicenceOk` avant son handler** — sauter
+l'ecran ne donne plus acces aux donnees.
+
+- **Aucune fonction de decision partagee avec `PM.Licence`.** Si les deux
+  couches appelaient `IsLicensed`, un seul rapiecage les ouvrirait toutes les
+  deux. `PM.LicenceGate` refait sa propre verification de bout en bout —
+  decodage, SHA-256, appels CNG **redeclares sous d'autres noms**, lecture du
+  champ `m` — et ne prend a `PM.Licence` que des **donnees** : la cle publique
+  (`LicencePublicKey`) et le nom de la pref (`LicencePrefKey`).
+- **Branchee dans `DispatchRequest`, pas avant.** Seules les routes de l'API
+  atteignent ce point ; les fichiers de l'ecran d'activation passent par
+  `TryServeEmbedded`, non garde — sinon l'ecran qui permet de s'activer ne se
+  chargerait plus. **404**, pas 403, comme le reste du verrouillage.
+- **Le refus est le MEME 404 qu'une route inexistante** (`TJSONHelper.SendError(404,
+  'Not found')`). Un corps vide ne suffisait pas : Indy le remplace par sa page
+  HTML, distincte du JSON d'une route inconnue — ce qui revelait les routes
+  existantes (vu a l'essai F de LICENCE-TESTS.md).
+- **Exe d'essai qui saute l'ecran** : define `LICENCE_TEST_SKIP_SCREEN`, qui fait
+  repondre `licence/status` ok. **A la compilation et jamais par un reglage** —
+  un interrupteur dans `config.txt`, que n'importe qui cree a cote de l'exe,
+  ferait sauter la 1re couche sans rapiecage. Build dedie, dossiers exe ET
+  `.dcu` a part (des unites compilees avec ce define ne doivent jamais etre
+  liees dans un exe normal) ; `;` des defines echappe en `%3B` pour MSBuild :
+  ```
+  msbuild PMServer.dproj /p:Config=Release /p:Platform=Win32
+      "/p:DCC_Define=RELEASE%3BLICENCE_TEST_SKIP_SCREEN"
+      "/p:DCC_ExeOutput=E:\password manager\Win32-TEST-licence"
+      "/p:DCC_DcuOutput=E:\password manager\dcu\Win32-TEST-licence"
+  ```
+  Verifier apres build : la chaine `LICENCE TEST BUILD` (UTF-16) ne doit
+  exister que dans l'exe d'essai.
+- Un **oui** est retenu pour le processus (le test est sur le chemin de chaque
+  requete) ; un **non** jamais, pour qu'une activation faite juste avant soit
+  vue a la requete suivante.
+- **Le prix de l'independance : deux implementations qui doivent dire la meme
+  chose.** Une divergence ferait passer l'ecran puis tomber chaque requete en
+  404 — refuser quelqu'un qui a paye. `SelfTestLicenceGate` eprouve la 2e couche
+  seule sur un vecteur lie a une empreinte fixe (`0123456789abcdef`, paire
+  jetable dont la privee n'a jamais ete ecrite), **en commencant par le sens qui
+  accepte**. L'**accord** entre couches ne se teste pas en vecteur — la 1re
+  compare a l'empreinte reelle du poste — et se prouve en conditions reelles :
+  au 2026-09-16, sur ce poste avec la vraie licence, `IsLicensed` = TRUE et
+  `ApiLicenceOk` = TRUE.
+- **Ce que ca n'arrete pas** : quelqu'un qui trouve et rapiece les deux. Une
+  heure devient deux ; la nature d'un schema hors ligne ne change pas. Les
+  protections du commerce (VMProtect, Themida) iraient plus loin mais
+  declenchent des **faux positifs antivirus** — ruineux pour un gestionnaire de
+  mots de passe. Les outils libres ne s'appliquent pas : OLLVM exige un
+  compilateur LLVM (dcc32 Win32 n'en est pas un), Alcatraz est x64 seulement,
+  UPX se defait par `upx -d`.
+
 **ORDRE OBLIGATOIRE.** Tant que `LicencePublicKeyBlob` est a zero, aucune
 licence n'est valide et l'ecran d'activation est **infranchissable** — l'exe
 construit ne s'ouvre plus. Poser la cle publique AVANT de deployer :
@@ -992,6 +1087,81 @@ device, never transmitted.
 Sensitive actions (export, change master pw, recovery code…) still
 require master pw via `askReauth` — sync never substitutes.
 
+### QR des reglages pour le telephone (`sync/qr`)
+
+Recopier une URL d'API et quarante caracteres de jeton sur un telephone est le
+vrai obstacle a l'installation. **Settings -> Sync -> QR for phone** affiche un
+QR que l'application Android scanne elle-meme.
+
+- **C'est l'EXE qui fabrique le QR**, pas la page : il lit `syncUrl` et
+  `syncPwd` dans ses prefs DPAPI et n'envoie a la page que la **matrice**
+  noir/blanc (`Bridge.onSyncQr(taille, bits)`). Le jeton ne traverse donc pas le
+  moteur de rendu en clair - meme regle que `prefs/has`.
+- **Le mot de passe de synchro n'y est JAMAIS** : un QR se photographie
+  par-dessus l'epaule, et avec lui il ouvrirait le coffre du depot. Il se tape
+  une fois sur le telephone. Le QR se masque seul au bout de 60 s.
+- **Le contenu est un lien `pmserver://sync?u=&t=`, pas du texte.** L'appareil
+  photo du telephone envoie tout TEXTE a une recherche web : le jeton serait
+  parti chez Google a un appui pres. Un schema propre n'a qu'une application
+  pour l'ouvrir.
+- **Le plus court possible** : l'adresse du depot (`https://hote/Owner/Repo`) et
+  non l'URL d'API - le telephone la rallonge a l'enregistrement -, et seuls
+  `% & # + espace` sont echappes. `TNetEncoding.URL.Encode` changeait chaque
+  `:` et `/` en trois caracteres, et le QR devenait trop dense pour etre lu.
+- Generateur : **`Source/DelphiZXingQRCode.pas`** (portage ZXing, Apache 2.0,
+  licence a cote). `BCryptVerifySignature` n'a rien a voir ici : le QR n'est pas
+  signe, il ne porte que ce que l'utilisateur voit deja a l'ecran.
+- **Piege CSS rencontre** : `css/style.css` impose `svg { width: 16px }` a
+  toutes les icones, ce qui reduisait le QR a la taille d'une icone. La taille
+  est donc posee **en style direct** sur le `<svg>`.
+
+### GitHub, et refus d'un depot public (2026-09-18)
+
+- **GitHub parle la meme API des contenus que Gitea** (contenu base64, `sha`,
+  meme corps de PUT) : meme chemin, reconnu a `api.github.com/repos/` en plus de
+  `/api/v1/repos/`. `syncIsGitea` (JS), `LGitea` (UMainForm) et
+  `TSyncClient.IsGitea` (APK) reconnaissent les deux.
+- **`User-Agent: PMServer` partout** : GitHub rend 403 a une requete sans ;
+  Gitea l'ignore.
+- **Un depot PUBLIC est refuse**, Gitea comme GitHub, avant toute lecture ou
+  ecriture : `GET` du depot (URL des contenus coupee a `/contents/`), champ
+  `private`. Chaque synchro est un commit, l'historique garde tous les
+  instantanes chiffres ; public, n'importe qui les attaque hors ligne. Un doute
+  reseau ne bloque pas (pas de verdict = on laisse la vraie requete parler).
+- **Limite GitHub** : au-dela de 1 Mo, l'API des contenus ne rend plus le fichier
+  (`encoding: none`). Le coffre chiffre fait ~250 Ko au 2026-09-18.
+- Telephone : `https://github.com/O/R` <-> URL d'API, comme pour Gitea. Le QR
+  du PC porte aussi la forme courte `github.com/O/R`.
+
+### Idee gardee : « Reinitialiser l'historique » du depot de synchro
+
+**Rien n'est fait, et le code actuel reste tel quel** (decide le 2026-09-17).
+Chaque synchro est un commit, donc le depot garde TOUS les instantanes
+precedents. Ca ne coute rien en place (Git ne stocke que les differences,
+86 commits au 2026-09-17), mais **apres un changement de mot de passe de
+synchro les anciens restent dechiffrables avec l'ancien** - c'est la seule
+raison de vouloir les couper.
+
+- **L'application ne peut pas le faire par l'API des contenus de Gitea** :
+  elle sait ajouter un commit, rien d'autre. Supprimer des commits demande
+  un `git push --force`, donc un client git dans l'exe.
+- **Ce qui serait possible par l'API** : `DELETE /repos/…` puis
+  `POST /user/repos`, puis republier. **Ecarte en automatique** : entre les
+  deux, le depot ne contient plus rien - une coupure reseau la et la copie
+  distante est perdue -, et le jeton devrait porter le droit de supprimer un
+  depot, ce qui en fait une bien plus grosse prise s'il fuit.
+- **La forme retenue le jour ou on le fera** : un bouton
+  « Reinitialiser l'historique » dans Settings -> Sync, avec confirmation,
+  jamais a chaque synchro.
+- **En attendant**, la commande manuelle sur un clone, apres une rotation du
+  mot de passe de synchro :
+  ```
+  git checkout --orphan tronque HEAD~10 && git commit -m "historique tronque"
+  git rebase --onto tronque HEAD~10 main && git push --force origin main
+  ```
+  Sans danger pour les appareils : Gitea identifie le fichier par le hachage
+  de son **contenu**, que la reecriture d'historique ne change pas.
+
 **Tombstone purge on (re)create** : `POST /entries` and
 `POST /entries/bulk-import` both DELETE any `entry_tombstones` row
 matching the inserted uuid (same transaction). Without this, restoring
@@ -1375,6 +1545,55 @@ le vide ET vide `FPendingURL` → écran noir permanent sur cold-start lent.
   fix port-fixe est possible (`port=N` dans `config.txt`) mais on perd
   l'aléatoire qui complique le scan externe.
 - **Modifier les `Enable*` props TMS en `OnInitialized`**, pas FormCreate.
+- **`F2048 Bad unit format … FMX.TMSFNC*.dcu … Found x64`** : le dossier des
+  sources `…\tmssoftware\registered\TMS FNC Core\` est dans le chemin de
+  recherche, et une compilation y depose ses `.dcu` **a cote des `.pas`**. Une
+  compilation **Win64** (le 2026-09-07 a 11 h 45) en a reecrit 33 en x64, et le
+  build Win32 buttait dessus — **sans aucun rapport avec le code du projet** :
+  l'arbre propre echouait a l'identique. Correctif : les deplacer
+  (sauvegarde dans `…\tmssoftware\_backup-x64-dcu-2026-09-07`) ; le build Win32
+  retombe sur `Delphi12\Win32\Release\`. Le symptome reviendra a chaque
+  alternance Win32/Win64 sur ce poste.
+- **Z: est quasi plein (0,3 Go au 2026-09-16).** Le build sort sur `E:\password manager\`,
+  **un dossier par plateforme** — exe ET `.dcu` :
+  ```
+  msbuild PMServer.dproj /t:Build /p:Config=Release /p:Platform=Win32|Win64
+      "/p:DCC_ExeOutput=E:\password manager\<Plateforme>"
+      "/p:DCC_DcuOutput=E:\password manager\dcu\<Plateforme>"
+  ```
+  Surcharge MSBuild, pas dans le `.dproj` : un chemin propre a une machine n'a
+  pas sa place dans un fichier versionne. **F9 dans l'IDE sort toujours sur Z:.**
+  **La sortie Android suit le meme chemin** : `Z:\password-manager\Android64` est
+  une **jonction** vers `E:\password manager\Android64`, posee le 2026-09-17 quand
+  `Z:` est tombe a 40 Ko libres et que `aapt` echouait sans dire pourquoi.
+  **Des `.dcu` separes par plateforme sont ce qui empeche la pollution TMS**
+  ci-dessus : verifie au premier build 32+64, aucun `.dcu` depose a cote des
+  sources TMS. L'exe de `E:\password manager\` cree **son propre `vault.db`** a
+  cote de lui, sans `config.txt` : ni le coffre de `delphi-backend\`, ni celui
+  de `E:\a pmanager\`.
+- **SQLite doit etre LIE dans l'exe : `FireDAC.Phys.SQLiteWrapper.Stat` dans
+  `PM.Database`.** Sans cette unite, FireDAC **charge `sqlite3.dll`** au
+  demarrage. Le piege : **sur un poste de developpement ca marche quand meme**,
+  parce que `…\Embarcadero\Studio\23.0\bin\sqlite3.dll` est dans le PATH. On
+  croit donc livrer un exe autonome ; sur une machine sans Delphi il refuse de
+  demarrer (`[FireDAC][Phys][SQLite]-314 Cannot load vendor library`). C'est
+  le Win64 qui l'a revele — la DLL du PATH est 32 bits, donc introuvable pour
+  lui — mais le **Win32 livre jusqu'au 2026-09-16 etait casse de la meme facon**
+  chez quiconque n'a pas Delphi, y compris le paquet prepare pour un tiers.
+  Prouve avec un PATH reduit a `C:\Windows\System32;C:\Windows` : avec l'unite
+  « SQLite OUVERT 3.42.0 », sans elle l'erreur exacte. `Stat` et non `FDEStat` :
+  le coffre est un SQLite ordinaire, le chiffrement se fait cote JavaScript.
+  **Pour verifier qu'un exe est vraiment autonome, retirer Delphi du PATH** —
+  lire la table d'import ne suffit pas, le chargement est dynamique.
+- **Win64 (active le 2026-09-16).** Le groupe `Base_Win64` du `.dproj` etait
+  quasi vide : **ni prefixes d'unites** (`Winapi;System.Win;…`), d'ou
+  `F2613 Unite 'Windows' non trouvee` en recompilant TMS, **ni `Cfg_1_Win64`**
+  — l'exe aurait compile sans icone et sans `PerMonitorV2`, donc flou sur un
+  ecran haute resolution. Complete en miroir exact de Win32. **L'empreinte de
+  licence est identique en 32 et 64 bits** (verifie : `2179-C42D-2DF2-AE0B`
+  des deux cotes, les deux couches a TRUE) — une licence vaut pour les deux.
+  L'exe 64 bits cite `WebView2Loader_x64` : son ouverture reelle reste a
+  eprouver en le lancant.
 
 ## Conventions code (héritage sessions précédentes)
 

LICENCE-TESTS.md

@@ -161,6 +161,75 @@ Deux observations de la campagne, gardées parce qu'elles se reproduiront :
 
 ---
 
+## F. La deuxieme couche, la premiere sautee — 2026-09-16
+
+Ne rien rapiecer : **ignorer l'ecran completement** et interroger l'API en
+direct, comme quelqu'un qui aurait saute la 1re couche. Meme requete, licence
+active puis retiree.
+
+**Preparation** : `config.txt` a cote de l'exe avec `port=8799`,
+`require_token=false`, `require_process_check=false`. Les deux derniers sont
+indispensables — sinon le jeton ou le controle de processus repondent 404
+AVANT la 2e couche, et l'essai ne prouve rien. **A supprimer ensuite.**
+
+**Deux pieges rencontres, qui fausseraient le resultat :**
+
+- **`config.txt` est lu depuis le dossier courant.** Lancer l'exe d'ailleurs le
+  prive de sa config : jeton et controle actifs, 404 partout, faux positif.
+  Lancer avec le dossier de l'exe comme dossier de travail.
+- **La 2e couche retient un « oui » pour la vie du processus.** Fermer la
+  fenetre ne quitte pas (elle part dans la zone de notification) : relance =
+  reveil de l'ancien processus, qui repond encore `pong`. Quitter par le menu
+  de l'icone, verifier qu'aucune instance ne tourne, puis relancer.
+
+**Resultat** :
+
+| Requete | Licence active | Licence retiree |
+|---|---|---|
+| `GET /ping` | 200 `pong` | **404** |
+| `GET /entries`, `/settings`, `/folders` | — | **404** |
+| `POST /register` | — | **404** — impossible de se creer un compte |
+| `GET /index.html` | 200 | **200** — l'ecran d'activation reste servi |
+| `GET /nexiste-pas` | 404 JSON | 404 JSON |
+
+**Observation** : le refus de la 2e couche n'a pas un corps vide — Indy remplace
+un `ContentText` vide par sa page `404 Not Found`. Il se distingue donc d'une
+route inexistante (`{"error":"Not found"}`), ce qui **revele quelles routes
+existent**. Sans consequence en production (jeton et controle de processus
+actifs), mais contraire au principe du verrouillage.
+
+---
+
+## F bis. Meme essai, depuis l'application — 2026-09-17
+
+L'essai F interrogeait l'API a la main. Celui-ci passe par l'application, avec
+un **exe d'essai** compile avec `LICENCE_TEST_SKIP_SCREEN` : la 1re couche
+repond toujours « licencie », comme si elle avait ete rapiecee. La 2e couche,
+independante, verifie la vraie licence. (Construction : voir CLAUDE.md,
+section de la deuxieme couche. Jamais livre.)
+
+1. Lancer l'exe d'essai, licence active : pas d'ecran d'activation, *Register*
+   d'un compte de test reussit.
+2. *Settings → Licence* → **Deactivate (debug)**, puis **Quit** par l'icone.
+3. Relancer : toujours pas d'ecran d'activation (1re couche « rapiecee »).
+4. Tenter d'entrer.
+
+**Resultat** : toasts rouges **« Not found »**, impossible d'entrer. Le message
+est le 404 generique, identique a celui d'une route inexistante — depuis le
+correctif du meme jour. Qui aurait rapiece la 1re couche voit une application
+qui ne marche pas, **sans indice qu'une verification de licence existe**.
+
+Complement 2026-09-17 : **Login** n'affichait pas rien, mais « Invalid
+credentials » (le 404 tombait dans la branche utilisateur inconnu). Corrige
+(`649abc8`) ; reteste licence desactivee : aucune bulle. Piege rencontre : avec
+la licence encore active, l'exe d'essai ouvre le coffre normalement — la licence
+est dans `prefs.bin` du compte Windows, partagee par tous les exe du poste.
+
+**Apres l'essai** : reactiver la licence avec un exe **normal** — l'exe
+d'essai n'affiche jamais l'ecran d'activation.
+
+---
+
 ## Ce qu'aucun de ces essais ne prouve
 
 À dire clairement, pour ne pas se croire protégé de ce qu'on ne l'est pas :

android-client/PMA.ScreenGuard.pas

@@ -42,6 +42,14 @@ procedure TintSystemBars(ATop, ABottom: TAlphaColor);
 /// decide de la suite d'apres la reponse.
 function HideSoftKeyboard: Boolean;
 
+/// Deplie le clavier pour le champ qui a le focus (la recherche). Un focus()
+/// JavaScript seul pose le curseur sans ouvrir le clavier.
+procedure ShowSoftKeyboard;
+
+/// Renvoie l'application en arriere-plan : on retombe sur l'app d'ou l'on
+/// venait, prete a recevoir le collage.
+procedure MoveAppToBack;
+
 implementation
 
 {$IF DEFINED(ANDROID)}
@@ -126,4 +134,44 @@ begin
 end;
 {$ENDIF}
 
+{$IF DEFINED(ANDROID)}
+procedure ShowSoftKeyboard;
+var
+  LService: JObject;
+  LView: JView;
+begin
+  try
+    LView := TAndroidHelper.Activity.getWindow.getDecorView.findFocus;
+    if LView = nil then Exit;
+    LService := TAndroidHelper.Context.getSystemService(
+      TJContext.JavaClass.INPUT_METHOD_SERVICE);
+    if LService = nil then Exit;
+    TJInputMethodManager.Wrap(LService).showSoftInput(LView, 0);
+  except
+    // Pas de clavier : la recherche reste a un appui.
+  end;
+end;
+
+procedure MoveAppToBack;
+begin
+  CallInUIThread(
+    procedure
+    begin
+      try
+        TAndroidHelper.Activity.moveTaskToBack(True);
+      except
+        // Reste au premier plan : on colle apres un retour manuel.
+      end;
+    end);
+end;
+{$ELSE}
+procedure ShowSoftKeyboard;
+begin
+end;
+
+procedure MoveAppToBack;
+begin
+end;
+{$ENDIF}
+
 end.

android-client/PMA.Store.pas

@@ -186,6 +186,19 @@ procedure SetPendingFlag(AOn: Boolean);
 /// Chemin du fichier, pour le journal et les tests.
 function VaultPath: string;
 
+/// COPIE DE SECOURS du cache quand il est scelle par le verrouillage d'ecran.
+///
+/// Retirer le schema (ou le reinitialiser) fait DETRUIRE par Android la cle qui
+/// scelle vault.bin : le coffre devenait illisible et il fallait le
+/// retelecharger. SaveVault ecrit donc a cote une seconde copie scellee sous le
+/// mot de passe (meme format que le code d'app, VER_PIN : cle de l'appareil
+/// sans contrainte + PBKDF2 du mot de passe), que rien dans Android n'invalide.
+/// Elle n'existe QUE pour un cache VER_WRAP ; tout autre scellement l'efface.
+function HasRecoveryVault: Boolean;
+function LoadRecoveryVault(out APlainJson, AETag, ASyncPwd: string;
+  out AKey, ASalt: TBytes; out AIterations: Integer;
+  const APwd: string): Boolean;
+
 /// Reglages du serveur : URL et jeton Bearer.
 ///
 /// FICHIER SEPARE, ET PROTECTION PLUS FAIBLE, DELIBEREMENT. Ils sont chiffres
@@ -218,6 +231,7 @@ const
   LOCAL_FILE    = 'vault-local.json';
   PENDING_FILE  = 'pending.flag';
   SETTINGS_FILE = 'settings.bin';
+  RECOVER_FILE  = 'vault-recover.bin';
   // Un alias par schema : la contrainte d'authentification est figee a la
   // creation de la cle et ne peut pas etre ajoutee apres coup.
   KEY_ALIAS      = 'pm_vault_key';        // AES, sans authentification
@@ -298,12 +312,18 @@ begin
     TFile.Delete(LocalContainerPath);
 end;
 
+function RecoverPath: string;
+begin
+  Result := TPath.Combine(TPath.GetHomePath, RECOVER_FILE);
+end;
+
 procedure DropLocalVault;
 begin
   // Chacun sous son propre try : un fichier absent ou verrouille ne doit pas
   // empecher les deux autres de partir - un effacement a moitie fait laisse
   // l'appareil dans un etat que personne n'a voulu.
   try if TFile.Exists(VaultPath) then TFile.Delete(VaultPath); except end;
+  try if TFile.Exists(RecoverPath) then TFile.Delete(RecoverPath); except end;
   try DropLocalContainer; except end;
   try SetPendingFlag(False); except end;
 end;
@@ -335,6 +355,11 @@ begin
   Result := TPath.Combine(TPath.GetHomePath, VAULT_FILE);
 end;
 
+function HasRecoveryVault: Boolean;
+begin
+  Result := TFile.Exists(RecoverPath);
+end;
+
 function HasVault: Boolean;
 begin
   Result := TFile.Exists(VaultPath);
@@ -344,6 +369,8 @@ procedure ClearVault;
 begin
   if TFile.Exists(VaultPath) then
     TFile.Delete(VaultPath);
+  if TFile.Exists(RecoverPath) then
+    TFile.Delete(RecoverPath);
 end;
 
 {$IF DEFINED(ANDROID)}
@@ -919,7 +946,7 @@ begin
   end;
 end;
 
-procedure SaveVault(const APlainJson, AETag, ASyncPwd: string;
+procedure SaveVaultAt(const APath, APlainJson, AETag, ASyncPwd: string;
   ARequireAuth, AFreshKey: Boolean; const APin: string;
   const AKey, ASalt: TBytes; AIterations: Integer; AClearPin: Boolean);
 {$IF DEFINED(ANDROID)}
@@ -1010,7 +1037,7 @@ begin
     LOut[0] := VER_PIN;
     Move(LIv[0], LOut[1], Length(LIv));
     Move(LCt[0], LOut[1 + Length(LIv)], Length(LCt));
-    TFile.WriteAllBytes(VaultPath, LOut);
+    TFile.WriteAllBytes(APath, LOut);
     Exit;
   end;
 
@@ -1087,7 +1114,7 @@ begin
     Move(LCt[0], LOut[1 + Length(LIv)], Length(LCt));
   end;
 
-  TFile.WriteAllBytes(VaultPath, LOut);
+  TFile.WriteAllBytes(APath, LOut);
 end;
 {$ELSE}
 begin
@@ -1095,9 +1122,30 @@ begin
 end;
 {$ENDIF}
 
-function LoadVault(out APlainJson, AETag, ASyncPwd: string;
+procedure SaveVault(const APlainJson, AETag, ASyncPwd: string;
+  ARequireAuth, AFreshKey: Boolean; const APin: string;
+  const AKey, ASalt: TBytes; AIterations: Integer; AClearPin: Boolean);
+begin
+  SaveVaultAt(VaultPath, APlainJson, AETag, ASyncPwd, ARequireAuth, AFreshKey,
+              APin, AKey, ASalt, AIterations, AClearPin);
+  // Suit le scellement REEL (lu dans l'en-tete), pas celui demande : un
+  // appareil sans verrouillage retombe sur VER_PLAIN, et une ecriture refusee
+  // laisse l'ancien en place.
+  try
+    if VaultNeedsAuth and (ASyncPwd <> '') then
+      SaveVaultAt(RecoverPath, APlainJson, AETag, ASyncPwd, False, False,
+                  ASyncPwd, AKey, ASalt, AIterations, False)
+    else if TFile.Exists(RecoverPath) then
+      TFile.Delete(RecoverPath);
+  except
+    on E: Exception do
+      FLastStoreError := 'recovery copy not written: ' + E.Message;
+  end;
+end;
+
+function LoadVaultAt(const APath: string; out APlainJson, AETag, ASyncPwd: string;
   out AKey, ASalt: TBytes; out AIterations: Integer;
-  const APin: string = ''): Boolean;
+  const APin: string): Boolean;
 {$IF DEFINED(ANDROID)}
 var
   LRaw, LIv, LCt, LPlain, LWrapped, LAesRaw, LInner, LSalt, LPinKey: TBytes;
@@ -1114,10 +1162,10 @@ begin
   ASalt := nil;
   AIterations := 0;
   FLastStoreError := '';
-  if not TFile.Exists(VaultPath) then Exit;
+  if not TFile.Exists(APath) then Exit;
 
   try
-    LRaw := TFile.ReadAllBytes(VaultPath);
+    LRaw := TFile.ReadAllBytes(APath);
     if Length(LRaw) < 1 then Exit;
 
     if LRaw[0] = VER_PIN then
@@ -1268,4 +1316,21 @@ begin
 end;
 {$ENDIF}
 
+function LoadVault(out APlainJson, AETag, ASyncPwd: string;
+  out AKey, ASalt: TBytes; out AIterations: Integer;
+  const APin: string = ''): Boolean;
+begin
+  Result := LoadVaultAt(VaultPath, APlainJson, AETag, ASyncPwd, AKey, ASalt,
+                        AIterations, APin);
+end;
+
+function LoadRecoveryVault(out APlainJson, AETag, ASyncPwd: string;
+  out AKey, ASalt: TBytes; out AIterations: Integer;
+  const APwd: string): Boolean;
+begin
+  Result := (APwd <> '') and
+    LoadVaultAt(RecoverPath, APlainJson, AETag, ASyncPwd, AKey, ASalt,
+                AIterations, APwd);
+end;
+
 end.

android-client/PMA.SyncClient.pas

@@ -61,6 +61,7 @@ type
     FBaseUrl: string;
     FToken: string;
     FTimeoutMs: Integer;
+    FPrivacyChecked: Boolean;
   public
     constructor Create(const ABaseUrl, AToken: string);
 
@@ -73,6 +74,18 @@ type
     /// n'y ressemble pas est de toute facon inutilisable.
     function IsGitea: Boolean;
 
+    /// UN DEPOT PUBLIC EST REFUSE (Gitea comme GitHub) : chaque synchro est un
+    /// commit, et l'historique garde tous les instantanes, attaquables hors
+    /// ligne par quiconque peut les lire. Message a afficher, ou '' si le depot
+    /// est prive ou si on n'a pas pu le savoir. Verifie une fois par instance.
+    function PublicRepoWarning: string;
+
+    /// POURQUOI UN 404 OU UN 401, en clair pour l'utilisateur. Gitea repond 404
+    /// aussi bien pour un fichier absent que pour un depot ou un proprietaire
+    /// inexistant : deux requetes de plus tranchent - le depot, puis
+    /// l'utilisateur. Vide si rien de plus precis n'a pu etre etabli.
+    function Diagnose(AHttpCode: Integer): string;
+
     /// Publie un conteneur. ASha est celui du fichier qu'on a lu : Gitea s'en
     /// sert pour refuser (409) une ecriture si quelqu'un d'autre a publie
     /// entre-temps. Vide = creation d'un fichier qui n'existait pas.
@@ -96,7 +109,107 @@ uses
 
 function TSyncClient.IsGitea: Boolean;
 begin
-  Result := FBaseUrl.ToLower.Contains('/api/v1/repos/');
+  // GitHub parle la meme API des contenus : meme chemin pour les deux.
+  Result := FBaseUrl.ToLower.Contains('/api/v1/repos/') or
+            FBaseUrl.ToLower.Contains('api.github.com/repos/');
+end;
+
+/// URL de l'API du depot (sans /contents/...), identique pour Gitea
+/// (https://hote/api/v1/repos/O/R) et GitHub (https://api.github.com/repos/O/R).
+function RepoApiUrl(const AContentsUrl: string): string;
+var
+  LP: Integer;
+begin
+  LP := Pos('/contents/', AContentsUrl);
+  if LP > 0 then Result := Copy(AContentsUrl, 1, LP - 1) else Result := '';
+end;
+
+function TSyncClient.PublicRepoWarning: string;
+var
+  LHttp: THTTPClient;
+  LResp: IHTTPResponse;
+  LDoc: TJSONObject;
+  LPriv: Boolean;
+begin
+  Result := '';
+  if FPrivacyChecked or not IsGitea or (RepoApiUrl(FBaseUrl) = '') then Exit;
+  FPrivacyChecked := True;
+  LHttp := THTTPClient.Create;
+  try
+    LHttp.ConnectionTimeout := FTimeoutMs;
+    LHttp.ResponseTimeout := FTimeoutMs;
+    LHttp.HandleRedirects := False;
+    LHttp.UserAgent := 'PMServer';
+    LHttp.CustomHeaders['Authorization'] := 'token ' + FToken;
+    try
+      LResp := LHttp.Get(RepoApiUrl(FBaseUrl));
+    except
+      Exit;   // doute reseau : pas de verdict, la vraie requete le dira
+    end;
+    if LResp.StatusCode <> 200 then Exit;
+    LDoc := TJSONObject.ParseJSONValue(LResp.ContentAsString(TEncoding.UTF8)) as TJSONObject;
+    if LDoc = nil then Exit;
+    try
+      if LDoc.TryGetValue<Boolean>('private', LPriv) and not LPriv then
+        Result := 'This repository is PUBLIC - make it private before syncing: anyone could download your encrypted vault and all its history.';
+    finally
+      LDoc.Free;
+    end;
+  finally
+    LHttp.Free;
+  end;
+end;
+
+function TSyncClient.Diagnose(AHttpCode: Integer): string;
+var
+  LHttp: THTTPClient;
+  LApi, LOwner, LRepo: string;
+  LParts: TArray<string>;
+  LP: Integer;
+
+  function CodeOf(const AUrl: string): Integer;
+  begin
+    try
+      Result := LHttp.Get(AUrl).StatusCode;
+    except
+      Result := 0;
+    end;
+  end;
+
+begin
+  Result := '';
+  if AHttpCode = 401 then
+    Exit('Token refused - expired, revoked or mistyped');
+  if (AHttpCode <> 404) or not IsGitea then Exit;
+  // https://hote/api/v1/repos/O/R/contents/F  ou  https://api.github.com/repos/O/R/...
+  // Tout ce qui precede "repos/" est la racine de l'API, pour les deux.
+  LP := Pos('/repos/', LowerCase(FBaseUrl));
+  if LP = 0 then Exit;
+  LApi := Copy(FBaseUrl, 1, LP);
+  LParts := Copy(FBaseUrl, LP + Length('/repos/'), MaxInt).Split(['/']);
+  if Length(LParts) < 2 then Exit;
+  LOwner := LParts[0];
+  LRepo := LParts[1];
+  LHttp := THTTPClient.Create;
+  try
+    LHttp.ConnectionTimeout := FTimeoutMs;
+    LHttp.ResponseTimeout := FTimeoutMs;
+    LHttp.HandleRedirects := False;
+    LHttp.UserAgent := 'PMServer';
+    LHttp.CustomHeaders['Authorization'] := 'token ' + FToken;
+    case CodeOf(LApi + 'repos/' + LOwner + '/' + LRepo) of
+      200: Result := 'No vault in this repository yet - sync from the PC first';
+      401: Result := 'Token refused - expired, revoked or mistyped';
+      404:
+        if CodeOf(LApi + 'users/' + LOwner) = 404 then
+          Result := 'User "' + LOwner + '" does not exist'
+        else
+          Result := 'Repository "' + LOwner + '/' + LRepo +
+                    '" not found, or this token cannot see it';
+    end;
+  finally
+    LHttp.Free;
+  end;
 end;
 
 /// Le sha du fichier ecrit, tire de la reponse au PUT : Gitea rend
@@ -182,7 +295,7 @@ begin
   if not IsGitea then
   begin
     Result.Status := ssHttpError;
-    Result.Error := 'Ecriture disponible seulement vers un depot Gitea';
+    Result.Error := 'Ecriture disponible seulement vers un depot Gitea ou GitHub';
     Exit;
   end;
   if (FBaseUrl = '') or (FToken = '') then
@@ -190,6 +303,12 @@ begin
     Result.Error := 'URL ou jeton non configure';
     Exit;
   end;
+  Result.Error := PublicRepoWarning;
+  if Result.Error <> '' then
+  begin
+    Result.Status := ssRefused;   // HttpCode 0 : refus local, pas du serveur
+    Exit;
+  end;
 
   LEnv := TJSONObject.Create;
   LB64 := TBase64Encoding.Create(0);   // pas de coupure : voir PMA.Crypto
@@ -211,6 +330,7 @@ begin
         LHttp.ConnectionTimeout := FTimeoutMs;
         LHttp.ResponseTimeout   := FTimeoutMs;
         LHttp.HandleRedirects   := False;
+        LHttp.UserAgent := 'PMServer';   // GitHub refuse toute requete sans
         LHttp.CustomHeaders['Authorization'] := 'token ' + FToken;
         LHttp.CustomHeaders['Content-Type']  := 'application/json';
         try
@@ -291,11 +411,18 @@ begin
     Result.Error := 'URL ou jeton non configure';
     Exit;
   end;
+  Result.Error := PublicRepoWarning;
+  if Result.Error <> '' then
+  begin
+    Result.Status := ssRefused;   // HttpCode 0 : refus local, pas du serveur
+    Exit;
+  end;
 
   LHttp := THTTPClient.Create;
   try
     LHttp.ConnectionTimeout := FTimeoutMs;
     LHttp.ResponseTimeout   := FTimeoutMs;
+    LHttp.UserAgent := 'PMServer';   // GitHub refuse toute requete sans
     // Pas de redirection suivie : une redirection vers un autre hote nous
     // ferait envoyer le jeton ailleurs.
     LHttp.HandleRedirects := False;

android-client/PMA.WebUI.pas

@@ -131,6 +131,8 @@ begin
       LObj.AddPair('initial', Initial(E.Display));
       LObj.AddPair('hasUser', TJSONBool.Create(E.Username <> ''));
       LObj.AddPair('isNote', TJSONBool.Create(E.IsNote));
+      // Un booleen, jamais le secret : le code se calcule chez Delphi a la copie.
+      LObj.AddPair('hasTotp', TJSONBool.Create(E.Totp <> ''));
       LEntries.AddElement(LObj);
     end;
 

android-client/README.md

@@ -176,7 +176,8 @@ Node ouvre le fichier et pas le client, le défaut est dans le client.
 | `PMA.Biometric.pas` | authentification via `FMX.BiometricAuth` |
 | `PMA.Vault.pas` | l'instantané en mémoire : lecture et recherche |
 | `PMA.Totp.pas` | codes TOTP (RFC 6238), base32 ou `otpauth://` |
-| `PMA.ScreenGuard.pas` | `FLAG_SECURE` (Release seulement) |
+| `PMA.ScreenGuard.pas` | `FLAG_SECURE` (Release seulement) — bloque aussi `adb exec-out screencap` |
+| `ThirdParty/ZXing/` | ZXing.Delphi (Apache 2.0), décodage du QR des réglages |
 | `selftest.dpr` | vérification console : conteneur + TOTP |
 | `PMA.TestVector.pas` | le vecteur embarqué, plus référencé par l'interface |
 | `make-testvector.js` | régénère le vecteur avec WebCrypto |
@@ -184,6 +185,158 @@ Node ouvre le fichier et pas le client, le défaut est dans le client.
 
 L'interface est `mainApk.pas`, à la racine du dépôt.
 
+## Trois façons d'ouvrir le coffre — 2026-09-17
+
+`Settings → Unlock with` : le **verrouillage d'écran** (schéma, code,
+empreinte, visage), un **code d'application**, ou le **mot de passe** qui ouvre
+le coffre. Le bouton en place porte une coche, et la note dit lequel est actif.
+Le coffre lui-même n'est jamais touché : seul le scellement de `vault.bin`
+change (`VER_WRAP` ↔ `VER_PIN`).
+
+- Le nom du mot de passe **suit l'origine du coffre** : « sync password » pour
+  un coffre venu du dépôt, « vault password » pour un coffre créé sur le
+  téléphone. `TForm8.PwdName` et `PushUnlockMode` le décident, et le libellé se
+  repose à chaque `AdoptVault` — sinon un téléchargement laissait l'ancien.
+- Revenir au verrouillage d'écran demande de **retaper le code courant** :
+  retirer une protection exige de la connaître.
+- Sans verrouillage d'écran sur l'appareil, le bouton est grisé et **dit
+  pourquoi** au lieu de rester muet.
+
+### La copie de secours, pour survivre au schéma retiré
+
+Retirer ou réinitialiser le verrouillage d'écran fait **détruire par Android**
+la clé qui scelle `vault.bin` : le coffre devenait illisible et il fallait le
+retélécharger. `SaveVault` écrit donc, **tant que le cache est en `VER_WRAP`**,
+une seconde copie `vault-recover.bin` scellée sous le mot de passe (format
+`VER_PIN` : clé d'appareil sans contrainte + PBKDF2), qu'Android n'invalide
+jamais.
+
+- Tout autre scellement l'efface : en mode code ou mot de passe, elle
+  n'apporterait rien.
+- À l'ouverture, `OpenVault` bascule dessus quand il n'y a plus de
+  verrouillage utilisable, et `OpenLocalNow` quand le système vient de déclarer
+  la clé morte (`LastStoreKeyInvalidated`). L'accueil demande alors le mot de
+  passe au lieu d'annoncer un coffre illisible.
+- **Rescellé immédiatement** après cette ouverture : sous le nouveau
+  verrouillage s'il existe (clé neuve, l'ancienne est morte), sinon sous le mot
+  de passe. Le coffre ne reste jamais sans protection.
+- Un coffre **venu seulement de la synchro** avant cette version n'a pas de
+  copie de secours : lui, il se retélécharge.
+
+## Scanner le QR des réglages — 2026-09-17
+
+Le poste affiche un QR (`Settings → Sync → QR for phone`) qui porte
+`pmserver://sync?u=&t=` — URL du dépôt et jeton, **jamais** le mot de passe de
+synchro. Deux chemins le reçoivent :
+
+1. **`Settings → Scan the QR shown on the PC`** : aperçu caméra plein écran,
+   décodage par **`ThirdParty/ZXing`** (ZXing.Delphi, Apache 2.0).
+2. **Le lien lui-même**, si un scanner extérieur l'ouvre : `intent-filter`
+   `VIEW` sur le schéma `pmserver` dans le manifeste, intent de départ lu au
+   `FormCreate` et suivants par `TMessageReceivedNotification`.
+
+Dans les deux cas **rien n'est enregistré** : les champs se remplissent, c'est
+`Save` qui valide. Le lien peut venir de n'importe où, et l'URL est sous les
+yeux de l'utilisateur au moment où il valide.
+
+Quatre défauts rencontrés, tous invisibles à la compilation :
+
+| Symptôme | Cause |
+|---|---|
+| L'appareil photo propose « Ouvrir avec » et des navigateurs | il envoie tout **texte** à une recherche web ; d'où le schéma `pmserver://`, que seule l'app ouvre |
+| Caméra noire au **premier** scan après l'autorisation | la fenêtre d'autorisation fait passer par `BecameActive`, qui remettait la vue web **par-dessus** l'aperçu ; elle ne le fait plus pendant un scan |
+| Écran noir, aucune image | la caméra est tenue par une autre application (l'appareil photo, même en arrière-plan). Un guet de 3 s sans image le **dit** maintenant |
+| QR lu mais ignoré | le texte décodé arrive avec un **caractère invisible** en tête (104 lus pour 103 émis) : on cherche le lien dans la chaîne au lieu de comparer le début |
+
+Le décodage est lent et n'aboutit que sur une image de temps en temps — c'est un
+portage Delphi, pas le scanner natif de Google. Une image sur quatre part au
+décodage, jamais deux à la fois, et l'indice **`TRY_HARDER`** est indispensable
+pour un QR photographié sur un écran.
+
+## Créer un coffre ici : essais seulement (`AllowCreateLocal`)
+
+Un coffre né sur le téléphone n'existe nulle part ailleurs — le poste ne le
+connaît pas, et personne ne peut le rendre à qui perd son mot de passe. Le
+define **`AllowCreateLocal`**, posé par `{$IFDEF DEBUG}` et jamais en release,
+garde ce chemin pour les essais.
+
+En release l'accueil n'offre que **Download vault** (`PM.setAuthMode("download")`),
+et `RegisterLocal` refuse aussi : l'interdit ne tient pas qu'à l'écran. Dépôt
+vide (404) ou conteneur illisible, **rien n'est créé** — un coffre neuf
+masquerait un réglage à corriger.
+
+## Erreurs du dépôt, générateur, Save — 2026-09-18
+
+- **Une erreur de réglage s'affiche là où on la corrige** : `ShowSettingsError`
+  ouvre les réglages avec le message en rouge au-dessus des champs du dépôt.
+  Download vault sans URL ni jeton, jeton refusé, dépôt ou utilisateur
+  inexistant, mauvais mot de passe de synchro, dépôt public.
+- **Gitea répond 404 pour tout** (fichier absent, dépôt ou propriétaire
+  inexistant, dépôt privé invisible au jeton). `TSyncClient.Diagnose` tranche
+  par deux requêtes de plus — le dépôt, puis l'utilisateur —, seulement quand
+  quelqu'un attend la réponse. Même logique pour GitHub (racine de l'API = tout
+  ce qui précède `repos/`).
+- **Générateur de mot de passe** : dé à côté du champ, à la création et à la
+  modification. `crypto.getRandomValues` avec rejet (un modulo favoriserait les
+  premiers caractères), 20 caractères, laissé visible une fois tiré.
+- **Save ne s'allume que sur un vrai changement**, comparé aux valeurs
+  enregistrées : taper puis effacer le regrise. Après Save : « ✓ Saved »,
+  inactif, nouvelle référence.
+
+### Le mot de passe de synchro : celui qu'on tape l'emporte, mais se vérifie
+
+Le cache porte le mot de passe de synchro. Rouvrir le coffre le **reposait**
+dans les réglages, par-dessus celui que l'utilisateur venait d'enregistrer : le
+changement disparaissait sans un mot (`FPwdUserSet` l'empêche désormais).
+
+Et un mot de passe changé **n'était jamais vérifié** : le `sha` inchangé faisait
+répondre « rien n'a changé » sans rien déchiffrer. Tant que `FPwdUserSet`, le
+dépôt est donc **retéléchargé en entier** (`Fetch('')`), le déchiffrement
+tranche, puis la synchro reprend si des modifications attendaient. Les
+publications, elles, n'étaient pas en danger : `CommitChange` et
+`PublishPending` chiffrent avec `FKey`, la clé du dernier mot de passe qui a
+réellement ouvert le dépôt.
+
+## Copier plus vite — 2026-09-18
+
+**Settings → Copy and search**, deux cases, sans **Save** (elles s'appliquent au
+toucher, fichier `ui-prefs.txt` dans le dossier privé, rien de secret) :
+
+- **Recherche prête** (cochée par défaut) : à l'ouverture du coffre et au retour
+  dans Vault, le curseur est dans la recherche, le texte précédent sélectionné,
+  et le clavier déplié (`PM.focusSearch` puis `kbd` → `ShowSoftKeyboard` : un
+  `focus()` JavaScript seul pose le curseur **sans** ouvrir le clavier). Pas
+  après un enregistrement ni un rafraîchissement de fond : le clavier surgirait
+  au milieu d'autre chose.
+- **Cacher Vault après une copie** (décochée par défaut) : `moveTaskToBack`.
+  **Android ne laisse pas choisir l'app qui passe devant** — selon la façon dont
+  Vault a été ouvert (lanceur, apps récentes), c'est l'écran d'accueil qui
+  revient, pas l'app d'avant. Le geste fiable est celui d'Android : glisser le
+  long de la barre du bas, ou double appui sur le bouton des apps récentes.
+
+**2 minutes de grâce après une copie** (`COPY_GRACE_SECONDS`), 30 s sinon : on
+part coller l'identifiant et on revient chercher le mot de passe, et le coffre
+se reverrouillait au milieu du geste.
+
+**Code 2FA sur chaque ligne** : icône d'horloge sur les entrées qui ont un
+secret (`hasTotp`, un booléen — jamais le secret dans la page). Le code est
+calculé à l'instant de la copie ; le message dit combien de secondes il lui
+reste.
+
+## Saisie : ce qui a résisté
+
+- **`user-select: none` du `body`** était hérité par les champs : le curseur ne
+  suivait pas le doigt et le texte ne défilait jamais, donc la fin d'une URL
+  restait hors d'atteinte. Les champs ont leur exception, mais **ça n'a pas
+  suffi** : l'URL est désormais une `textarea` qui passe à la ligne et prend la
+  hauteur de son texte.
+- La **croix** d'effacement couvrait toute la marge droite : toucher la fin du
+  texte effaçait le champ. Elle est plus étroite que la marge.
+- **`Save` est un geste** : fermer les réglages n'enregistre plus rien. Une URL
+  effacée par erreur revient en revenant en arrière.
+- L'URL s'affiche en **forme courte** (`https://hôte/Owner/Repo`) et
+  `normalizeRepoUrl` la rallonge en URL d'API à l'enregistrement.
+
 ## Fabriquer l'APK en ligne de commande
 
 L'EDI y arrive seul ; MSBuild non, et l'erreur ne dit pas pourquoi.
@@ -229,6 +382,22 @@ signature* sur le dossier déjà prêt, sans le vider :
 android-client\repack-apk.ps1
 ```
 
+> **La sortie Android vit sur `E:`.** `Z:` est arrivé à 40 Ko libres le
+> 2026-09-17 et `aapt` échouait sans dire pourquoi. `Z:\password-manager\Android64`
+> est désormais une **jonction** vers `E:\password manager\Android64` : les
+> scripts et le `.dproj` n'ont pas changé, et rien de machine-dépendant n'est
+> entré dans le dépôt.
+
+> **La release n'est plus `debuggable`.** Delphi écrit
+> `android:debuggable="true"` dans le manifeste **même en Release**, et l'APK
+> livré le portait. Sur un téléphone où le débogage USB est actif, `adb run-as`
+> ouvrait alors le dossier privé de l'application — donc `vault.bin` et les
+> réglages — sans accès root. `build-apk.ps1` force l'attribut à `false` dans
+> le manifeste mis en scène, **et seulement pour une release**. Vérification :
+> `adb shell dumpsys package com.embarcadero.pmserverApk` ne doit plus lister
+> `DEBUGGABLE` dans `pkgFlags`. Conséquence assumée : plus de `run-as` ni de
+> capture d'écran sur une release, c'est-à-dire plus d'inspection à distance.
+
 > **Place disque.** Le `.so` de debug pèse **91 Mo** (symboles), et le volume
 > `Z:` n'en fait que 2 Go. Le dépouiller avec le `strip` du NDK le ramène à
 > 54 Mo, et l'APK final à 16 Mo — mais `strip` écrit sa copie temporaire **à

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.Code128Reader.pas

@@ -0,0 +1,696 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.OneD.Code128Reader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  System.Math,
+  ZXing.Helpers,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat;
+
+var
+  CODE_PATTERNS: TArray<TArray<Integer>>;
+
+type
+  /// <summary>
+  /// <p>Decodes Code 128 barcodes.</p>
+  /// </summary>
+  TCode128Reader = class(TOneDReader)
+  private const
+    CODE_SHIFT = 98;
+    CODE_CODE_C = 99;
+    CODE_CODE_B = 100;
+    CODE_CODE_A = 101;
+    CODE_FNC_1 = 102;
+    CODE_FNC_2 = 97;
+    CODE_FNC_3 = 96;
+    CODE_FNC_4_A = 101;
+    CODE_FNC_4_B = 100;
+    CODE_START_A = 103;
+    CODE_START_B = 104;
+    CODE_START_C = 105;
+    CODE_STOP = 106;
+
+    class var MAX_AVG_VARIANCE: Integer;
+    class var MAX_INDIVIDUAL_VARIANCE: Integer;
+    class function FindStartPattern(row: IBitArray): TArray<Integer>;
+    class function DecodeCode(row: IBitArray; counters: TArray<Integer>;
+      rowOffset: Integer; var code: Integer): Boolean;
+
+    class procedure DoInitialize();
+    class procedure DoFinalize();
+  public
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      override;
+  end;
+
+implementation
+
+class procedure TCode128Reader.DoFinalize;
+begin
+  CODE_PATTERNS := nil;
+end;
+
+class procedure TCode128Reader.DoInitialize;
+begin
+  CODE_PATTERNS := [[2, 1, 2, 2, 2, 2], // 0
+  [2, 2, 2, 1, 2, 2], [2, 2, 2, 2, 2, 1], [1, 2, 1, 2, 2, 3],
+    [1, 2, 1, 3, 2, 2], [1, 3, 1, 2, 2, 2], // 5
+  [1, 2, 2, 2, 1, 3], [1, 2, 2, 3, 1, 2], [1, 3, 2, 2, 1, 2],
+    [2, 2, 1, 2, 1, 3], [2, 2, 1, 3, 1, 2], // 10
+  [2, 3, 1, 2, 1, 2], [1, 1, 2, 2, 3, 2], [1, 2, 2, 1, 3, 2],
+    [1, 2, 2, 2, 3, 1], [1, 1, 3, 2, 2, 2], // 15
+  [1, 2, 3, 1, 2, 2], [1, 2, 3, 2, 2, 1], [2, 2, 3, 2, 1, 1],
+    [2, 2, 1, 1, 3, 2], [2, 2, 1, 2, 3, 1], // 20
+  [2, 1, 3, 2, 1, 2], [2, 2, 3, 1, 1, 2], [3, 1, 2, 1, 3, 1],
+    [3, 1, 1, 2, 2, 2], [3, 2, 1, 1, 2, 2], // 25
+  [3, 2, 1, 2, 2, 1], [3, 1, 2, 2, 1, 2], [3, 2, 2, 1, 1, 2],
+    [3, 2, 2, 2, 1, 1], [2, 1, 2, 1, 2, 3], // 30
+  [2, 1, 2, 3, 2, 1], [2, 3, 2, 1, 2, 1], [1, 1, 1, 3, 2, 3],
+    [1, 3, 1, 1, 2, 3], [1, 3, 1, 3, 2, 1], // 35
+  [1, 1, 2, 3, 1, 3], [1, 3, 2, 1, 1, 3], [1, 3, 2, 3, 1, 1],
+    [2, 1, 1, 3, 1, 3], [2, 3, 1, 1, 1, 3], // 40
+  [2, 3, 1, 3, 1, 1], [1, 1, 2, 1, 3, 3], [1, 1, 2, 3, 3, 1],
+    [1, 3, 2, 1, 3, 1], [1, 1, 3, 1, 2, 3], // 45
+  [1, 1, 3, 3, 2, 1], [1, 3, 3, 1, 2, 1], [3, 1, 3, 1, 2, 1],
+    [2, 1, 1, 3, 3, 1], [2, 3, 1, 1, 3, 1], // 50
+  [2, 1, 3, 1, 1, 3], [2, 1, 3, 3, 1, 1], [2, 1, 3, 1, 3, 1],
+    [3, 1, 1, 1, 2, 3], [3, 1, 1, 3, 2, 1], // 55
+  [3, 3, 1, 1, 2, 1], [3, 1, 2, 1, 1, 3], [3, 1, 2, 3, 1, 1],
+    [3, 3, 2, 1, 1, 1], [3, 1, 4, 1, 1, 1], // 60
+  [2, 2, 1, 4, 1, 1], [4, 3, 1, 1, 1, 1], [1, 1, 1, 2, 2, 4],
+    [1, 1, 1, 4, 2, 2], [1, 2, 1, 1, 2, 4], // 65
+  [1, 2, 1, 4, 2, 1], [1, 4, 1, 1, 2, 2], [1, 4, 1, 2, 2, 1],
+    [1, 1, 2, 2, 1, 4], [1, 1, 2, 4, 1, 2], // 70
+  [1, 2, 2, 1, 1, 4], [1, 2, 2, 4, 1, 1], [1, 4, 2, 1, 1, 2],
+    [1, 4, 2, 2, 1, 1], [2, 4, 1, 2, 1, 1], // 75
+  [2, 2, 1, 1, 1, 4], [4, 1, 3, 1, 1, 1], [2, 4, 1, 1, 1, 2],
+    [1, 3, 4, 1, 1, 1], [1, 1, 1, 2, 4, 2], // 80
+  [1, 2, 1, 1, 4, 2], [1, 2, 1, 2, 4, 1], [1, 1, 4, 2, 1, 2],
+    [1, 2, 4, 1, 1, 2], [1, 2, 4, 2, 1, 1], // 85
+  [4, 1, 1, 2, 1, 2], [4, 2, 1, 1, 1, 2], [4, 2, 1, 2, 1, 1],
+    [2, 1, 2, 1, 4, 1], [2, 1, 4, 1, 2, 1], // 90
+  [4, 1, 2, 1, 2, 1], [1, 1, 1, 1, 4, 3], [1, 1, 1, 3, 4, 1],
+    [1, 3, 1, 1, 4, 1], [1, 1, 4, 1, 1, 3], // 95
+  [1, 1, 4, 3, 1, 1], [4, 1, 1, 1, 1, 3], [4, 1, 1, 3, 1, 1],
+    [1, 1, 3, 1, 4, 1], [1, 1, 4, 1, 3, 1], // 100
+  [3, 1, 1, 1, 4, 1], [4, 1, 1, 1, 3, 1], [2, 1, 1, 4, 1, 2],
+    [2, 1, 1, 2, 1, 4], [2, 1, 1, 2, 3, 2], // 105
+  [2, 3, 3, 1, 1, 1, 2]];
+
+  MAX_AVG_VARIANCE := Floor(PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.25);
+  MAX_INDIVIDUAL_VARIANCE := Floor(PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.7);
+
+end;
+
+class function TCode128Reader.FindStartPattern(row: IBitArray): TArray<Integer>;
+var
+  i, bestMatch, startCode, bestVariance, width, rowOffset, patternStart,
+    patternLength, variance, counterPosition: Integer;
+  counters: TArray<Integer>;
+  isWhite: Boolean;
+
+begin
+  width := row.Size;
+  rowOffset := row.getNextSet(0);
+  counterPosition := 0;
+  counters := TArray<Integer>.Create();
+  SetLength(counters, 6);
+  patternStart := rowOffset;
+  isWhite := false;
+  patternLength := Length(counters);
+
+  for i := rowOffset to width - 1 do
+  begin
+
+    if row[i] xor isWhite then
+    begin
+      inc(counters[counterPosition])
+    end
+    else
+    begin
+      if counterPosition = patternLength - 1 then
+      begin
+        bestVariance := MAX_AVG_VARIANCE;
+        bestMatch := -1;
+
+        startCode := CODE_START_A;
+        while startCode <= CODE_START_C do
+        begin
+
+          variance := patternMatchVariance(counters, CODE_PATTERNS[startCode],
+            MAX_INDIVIDUAL_VARIANCE);
+
+          if variance < bestVariance then
+          begin
+            bestVariance := variance;
+            bestMatch := startCode
+          end;
+
+          inc(startCode);
+        end;
+
+        if bestMatch >= 0 then
+        begin
+          // Look for whitespace before start pattern, >= 50% of width of start pattern
+          if row.isRange(Max(0, patternStart - (i - patternStart) div 2),
+            patternStart, false) then
+          begin
+            result := [patternStart, i, bestMatch];
+            exit;
+          end
+        end;
+
+        patternStart := patternStart + counters[0] + counters[1];
+
+        // Array.Copy(counters, 2, counters, 0, patternLength - 2);
+        // source, source index, dest, dest index, lengte
+
+        counters := TArray.CopyInSameArray(counters, 2, patternLength - 2);
+        counters[patternLength - 2] := 0;
+        counters[patternLength - 1] := 0;
+
+        dec(counterPosition);
+      end
+      else
+      begin
+        inc(counterPosition);
+      end;
+
+      counters[counterPosition] := 1;
+      isWhite := not isWhite
+    end;
+
+  end;
+
+  result := nil;
+
+end;
+
+class function TCode128Reader.DecodeCode(row: IBitArray;
+  counters: TArray<Integer>; rowOffset: Integer; var code: Integer): Boolean;
+var
+  bestVariance, l, d, variance: Integer;
+  pattern: TArray<Integer>;
+begin
+
+  code := -1;
+  if not recordPattern(row, rowOffset, counters) then
+  begin
+    result := false;
+    exit;
+  end;
+
+  bestVariance := MAX_AVG_VARIANCE;
+
+  // worst variance we'll accept
+  l := Length(CODE_PATTERNS) - 1;
+  for d := 0 to l do
+  begin
+    pattern := CODE_PATTERNS[d];
+    variance := patternMatchVariance(counters, pattern,
+      MAX_INDIVIDUAL_VARIANCE);
+    if variance < bestVariance then
+    begin
+      bestVariance := variance;
+      code := d
+    end;
+  end;
+
+  // TODO We're overlooking the fact that the STOP pattern has 7 values, not 6.
+  result := code >= 0;
+end;
+
+function TCode128Reader.decodeRow(const rowNumber: Integer;
+  const row: IBitArray; const hints: TDictionary<TDecodeHintType, TObject>)
+  : TReadResult;
+var
+  shiftUpperMode, upperMode, lastCharacterWasPrintable, convertFNC1, done,
+    unshift, isNextShifted: Boolean;
+  counters, startPatternInfo: TArray<Integer>;
+  lastPatternSize, multiplier, checksumTotal, code, lastCode, nextStart,
+    lastStart, startCode, codeSet, l, rawCodesSize: Integer;
+  rawCodes: TList<Byte>;
+  rawBytes: TArray<Byte>;
+  aResult: String;
+  counter, resultLength, i: Integer;
+  left, right: Single;
+  resultPointCallback: TResultPointCallback;
+  obj: TObject;
+  resultPoints: TArray<IResultPoint>;
+  resultPointLeft, resultPointRight: IResultPoint;
+begin
+  convertFNC1 := (hints <> nil) and
+    (hints.ContainsKey(ZXing.DecodeHintType.ASSUME_GS1));
+
+  startPatternInfo := FindStartPattern(row);
+  if (startPatternInfo = nil) then
+  begin
+    result := nil;
+    exit;
+  end;
+
+  startCode := startPatternInfo[2];
+
+  rawCodes := TList<Byte>.Create();
+
+  try
+
+    rawCodes.Add(Byte(startCode));
+
+    case startCode of
+      CODE_START_A:
+        begin
+          codeSet := CODE_CODE_A;
+        end;
+      CODE_START_B:
+        begin
+          codeSet := CODE_CODE_B;
+        end;
+      CODE_START_C:
+        begin
+          codeSet := CODE_CODE_C;
+        end
+    else
+      result := nil;
+      exit;
+    end;
+
+    done := false;
+    isNextShifted := false;
+    lastStart := startPatternInfo[0];
+    nextStart := startPatternInfo[1];
+    SetLength(counters, 6);
+    lastCode := 0;
+    code := 0;
+    checksumTotal := startCode;
+    multiplier := 0;
+    lastCharacterWasPrintable := true;
+    upperMode := false;
+    shiftUpperMode := false;
+
+    while not done do
+    begin
+
+      unshift := isNextShifted;
+      isNextShifted := false;
+
+      // Save off last code
+      lastCode := code;
+
+      // Decode another code from image
+      if not DecodeCode(row, counters, nextStart, code) then
+      begin
+        result := nil;
+        exit;
+      end;
+
+      rawCodes.Add(Byte(code));
+
+      // Remember whether the last code was printable or not (excluding CODE_STOP)
+      if code <> CODE_STOP then
+      begin
+        lastCharacterWasPrintable := true
+      end;
+
+      // Add to checksum computation (if not CODE_STOP of course)
+      if code <> CODE_STOP then
+      begin
+        inc(multiplier);
+        checksumTotal := checksumTotal + (multiplier * code);
+      end;
+
+      // Advance to where the next code will to start
+      lastStart := nextStart;
+      l := Length(counters) - 1;
+      for counter := 0 to l do
+      begin
+        nextStart := nextStart + counters[counter];
+      end;
+
+      // Take care of illegal start codes
+      case code of
+        CODE_START_A, CODE_START_B, CODE_START_C:
+          begin
+            result := nil;
+            exit;
+          end;
+      end;
+
+      case codeSet of
+
+        CODE_CODE_A:
+          begin
+            if code < 64 then
+            begin
+              if shiftUpperMode = upperMode then
+              begin
+                aResult := aResult + Char(32 + code);
+              end
+              else
+              begin
+                aResult := aResult + Char(32 + 128)
+              end;
+              shiftUpperMode := false
+            end
+            else if code < 96 then
+            begin
+              if shiftUpperMode = upperMode then
+              begin
+                aResult := aResult + Char(code - 64)
+              end
+              else
+              begin
+                aResult := aResult + Char(code + 64)
+              end;
+              shiftUpperMode := false
+            end
+            else
+            begin
+              // Don't let CODE_STOP, which always appears, affect whether whether we think the last
+              // code was printable or not.
+              if code <> CODE_STOP then
+              begin
+                lastCharacterWasPrintable := false
+              end;
+              case code of
+                CODE_FNC_1:
+                  begin
+                    if convertFNC1 then
+                    begin
+                      if Length(aResult) = 0 then
+                      begin
+                        // GS1 specification 5.4.3.7. and 5.4.6.4. If the first char after the start code
+                        // is FNC1 then this is GS1-128. We add the symbology identifier.
+                        aResult := aResult + ']C1'
+                      end
+                      else
+                      begin
+                        // GS1 specification 5.4.7.5. Every subsequent FNC1 is returned as ASCII 29 (GS)
+                        aResult := aResult + Char(29)
+                      end
+                    end;
+                  end;
+                CODE_FNC_2, CODE_FNC_3:
+                  begin
+
+                    // do nothing?
+                  end;
+                CODE_FNC_4_A:
+                  begin
+                    if (not upperMode) and (shiftUpperMode) then
+                    begin
+                      upperMode := true;
+                      shiftUpperMode := false
+                    end
+                    else if (upperMode) and (shiftUpperMode) then
+                    begin
+                      upperMode := false;
+                      shiftUpperMode := false
+                    end
+                    else
+                    begin
+                      shiftUpperMode := true
+                    end;
+                  end;
+                CODE_SHIFT:
+                  begin
+                    isNextShifted := true;
+                    codeSet := CODE_CODE_B;
+                  end;
+                CODE_CODE_B:
+                  begin
+                    codeSet := CODE_CODE_B;
+                  end;
+                CODE_CODE_C:
+                  begin
+                    codeSet := CODE_CODE_C;
+                  end;
+                CODE_STOP:
+                  begin
+                    done := true;
+                  end;
+              end
+            end;
+          end;
+        CODE_CODE_B:
+          begin
+            if code < 96 then
+            begin
+              if shiftUpperMode = upperMode then
+              begin
+                aResult := aResult + Char(32 + code)
+              end
+              else
+              begin
+                aResult := aResult + Char(32 + code + 128)
+              end;
+              shiftUpperMode := false
+            end
+            else
+            begin
+              if code <> CODE_STOP then
+              begin
+                lastCharacterWasPrintable := false
+              end;
+              case code of
+                CODE_FNC_1:
+                  begin
+                    if convertFNC1 then
+                    begin
+                      if Length(aResult) = 0 then
+                      begin
+                        // GS1 specification 5.4.3.7. and 5.4.6.4. If the first char after the start code
+                        // is FNC1 then this is GS1-128. We add the symbology identifier.
+                        aResult := aResult + (']C1')
+                      end
+                      else
+                      begin
+                        // GS1 specification 5.4.7.5. Every subsequent FNC1 is returned as ASCII 29 (GS)
+                        aResult := aResult + Char(29)
+                      end
+                    end;
+                  end;
+                CODE_FNC_2, CODE_FNC_3:
+                  begin
+                    // do nothing?
+                  end;
+                CODE_FNC_4_B:
+                  begin
+                    if (not upperMode) and (shiftUpperMode) then
+                    begin
+                      upperMode := true;
+                      shiftUpperMode := false
+                    end
+                    else if (upperMode) and (shiftUpperMode) then
+                    begin
+                      upperMode := false;
+                      shiftUpperMode := false
+                    end
+                    else
+                    begin
+                      shiftUpperMode := true
+                    end;
+                  end;
+                CODE_SHIFT:
+                  begin
+                    isNextShifted := true;
+                    codeSet := CODE_CODE_A;
+                  end;
+                CODE_CODE_A:
+                  begin
+                    codeSet := CODE_CODE_A;
+                  end;
+                CODE_CODE_C:
+                  begin
+                    codeSet := CODE_CODE_C;
+                  end;
+                CODE_STOP:
+                  begin
+                    done := true;
+                  end;
+              end
+            end;
+          end;
+        CODE_CODE_C:
+          begin
+            if code < 100 then
+            begin
+              if code < 10 then
+              begin
+                aResult := aResult + ('0')
+              end;
+              aResult := aResult + IntToStr(code);
+            end
+            else
+            begin
+              if code <> CODE_STOP then
+              begin
+                lastCharacterWasPrintable := false
+              end;
+              case code of
+                CODE_FNC_1:
+                  begin
+                    if convertFNC1 then
+                    begin
+                      if Length(aResult) = 0 then
+                      begin
+                        // GS1 specification 5.4.3.7. and 5.4.6.4. If the first char after the start code
+                        // is FNC1 then this is GS1-128. We add the symbology identifier.
+                        aResult := aResult + (']C1')
+                      end
+                      else
+                      begin
+                        // GS1 specification 5.4.7.5. Every subsequent FNC1 is returned as ASCII 29 (GS)
+                        aResult := aResult + Char(29)
+                      end
+                    end;
+                  end;
+                CODE_CODE_A:
+                  begin
+                    codeSet := CODE_CODE_A;
+                  end;
+                CODE_CODE_B:
+                  begin
+                    codeSet := CODE_CODE_B;
+                  end;
+                CODE_STOP:
+                  begin
+                    done := true;
+                  end;
+              end
+            end;
+          end;
+      end;
+
+      // Unshift back to another code set if we were shifted
+      if (unshift) then
+      begin
+        if (codeSet = CODE_CODE_A) then
+          codeSet := CODE_CODE_B
+        else
+          codeSet := CODE_CODE_A;
+      end;
+    end;
+
+    lastPatternSize := nextStart - lastStart;
+
+    // Check for ample whitespace following pattern, but, to do this we first need to remember that
+    // we fudged decoding CODE_STOP since it actually has 7 bars, not 6. There is a black bar left
+    // to read off. Would be slightly better to properly read. Here we just skip it:
+    nextStart := row.getNextUnset(nextStart);
+    if not row.isRange(nextStart, System.Math.Min(row.Size,
+      nextStart + (nextStart - lastStart) div 2), false) then
+    begin
+      result := nil;
+      exit;
+    end;
+
+    // Pull out from sum the value of the penultimate check code
+    checksumTotal := checksumTotal - (multiplier * lastCode);
+    // lastCode is the checksum then:
+    if checksumTotal mod 103 <> lastCode then
+    begin
+      result := nil;
+      exit;
+    end;
+
+    // Need to pull out the check digits from string
+    resultLength := Length(aResult);
+    if resultLength = 0 then
+    begin
+      // false positive
+      result := nil;
+      exit;
+    end;
+
+    // Only bother if the result had at least one character, and if the checksum digit happened to
+    // be a printable character. If it was just interpreted as a control code, nothing to remove.
+    if (resultLength > 0) and (lastCharacterWasPrintable) then
+    begin
+      if codeSet = CODE_CODE_C then
+      begin
+        aResult := aResult.Remove(resultLength - 2, 2);
+      end
+      else
+      begin
+        aResult := aResult.Remove(resultLength - 1, 1);
+      end
+    end;
+
+    left := (startPatternInfo[1] + startPatternInfo[0]) / 2;
+    right := lastStart + lastPatternSize / 2;
+
+    rawCodesSize := rawCodes.Count;
+    SetLength(rawBytes, rawCodesSize);
+
+    for i := 0 to rawCodesSize - 1 do
+      rawBytes[i] := rawCodes[i];
+
+    resultPointLeft := TResultPointHelpers.CreateResultPoint(left, rowNumber);
+    resultPointRight := TResultPointHelpers.CreateResultPoint(right, rowNumber);
+    resultPoints := [resultPointLeft, resultPointRight];
+
+    resultPointCallback := nil;
+    // had to add this initialization because the following if/else construct does not assign a value
+    // for all possible cases. Being resultPointCallback a local variable it is not initialized by default to null,
+    // so you could get unpredictable results
+
+    if ((hints = nil) or
+      (not hints.ContainsKey(TDecodeHintType.NEED_RESULT_POINT_CALLBACK))) then
+      resultPointCallback := nil
+    else
+    begin
+      obj := hints[TDecodeHintType.NEED_RESULT_POINT_CALLBACK];
+      if (obj is TResultPointEventObject) then
+        resultPointCallback := TResultPointEventObject(obj).Event;
+    end;
+
+    if Assigned(resultPointCallback) then
+    begin
+      resultPointCallback(resultPointLeft);
+      resultPointCallback(resultPointRight);
+    end;
+  finally
+    FreeAndNil(rawCodes);
+  end;
+
+  result := TReadResult.Create(aResult, rawBytes, resultPoints,
+    TBarcodeFormat.CODE_128);
+end;
+
+initialization
+
+TCode128Reader.DoInitialize;
+
+finalization
+
+TCode128Reader.DoFinalize;
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.Code39Reader.pas

@@ -0,0 +1,471 @@
+unit ZXing.OneD.Code39Reader;
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen
+  * Implemented by Nano103 and E. Spelt for Delphi
+}
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  Math,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat,
+  ZXing.Common.Detector.MathUtils;
+
+type
+
+  TCode39Reader = class sealed(TOneDReader)
+
+  private
+    class var ALPHABET: TArray<Char>;
+    class function decodeExtended(encoded: string): string; static;
+
+    function findAsteriskPattern(row: IBitArray): TArray<Integer>;
+    class function patternToChar(pattern: Integer; var c: Char)
+      : boolean; static;
+    class function toNarrowWidePattern(counters: TArray<Integer>)
+      : Integer; static;
+
+  const
+    ALPHABET_STRING: string = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%';
+    class var ASTERISK_ENCODING: Integer;
+
+  class var
+    CHARACTER_ENCODINGS: TArray<Integer>;
+    counters: TArray<Integer>;
+    decodeRowResult: TStringBuilder;
+    usingCheckDigit: boolean;
+    extendedMode: boolean;
+  public
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      override;
+
+    constructor Create(AUsingCheckDigit, AExtendedMode: boolean);
+    destructor Destroy(); override;
+
+  end;
+
+implementation
+
+{ Code93Reader }
+
+constructor TCode39Reader.Create(AUsingCheckDigit, AExtendedMode: boolean);
+begin
+  ALPHABET := ALPHABET_STRING.ToCharArray;
+  CHARACTER_ENCODINGS := TArray<Integer>.Create($034, $121, $061, $160, $031,
+    $130, $070, $025, $124, $064, // 0-9
+    $109, $049, $148, $019, $118, $058, $00D, $10C, $04C, $01C, // A-J
+    $103, $043, $142, $013, $112, $052, $007, $106, $046, $016, // K-T
+    $181, $0C1, $1C0, $091, $190, $0D0, $085, $184, $0C4, $094, // U-*
+    $0A8, $0A2, $08A, $02A // $-%
+    );
+
+  ASTERISK_ENCODING := TCode39Reader.CHARACTER_ENCODINGS[$27];
+
+  counters := TArray<Integer>.Create();
+  SetLength(counters, 9);
+  decodeRowResult := TStringBuilder.Create();
+  usingCheckDigit := AUsingCheckDigit;
+  extendedMode := AExtendedMode;
+
+end;
+
+destructor TCode39Reader.Destroy;
+begin
+  ALPHABET := nil;
+  CHARACTER_ENCODINGS := nil;
+  counters := nil;
+  FreeAndNil(decodeRowResult);
+  inherited;
+end;
+
+class function TCode39Reader.decodeExtended(encoded: string): string;
+var
+  next, c, decodedChar: Char;
+  length, i: Integer;
+  decoded: TStringBuilder;
+
+begin
+  length := encoded.length;
+  decoded := TStringBuilder.Create(length);
+  try
+
+    i := 0;
+    while i < length do
+    begin
+      c := encoded.Chars[i];
+      if (((c = '+') or (c = '$')) or ((c = '%') or (c = '/'))) then
+      begin
+        if ((i + 1) >= encoded.length) then
+        begin
+          Result := '';
+          exit
+        end;
+        next := encoded.Chars[(i + 1)];
+        decodedChar := Char(#0);
+        case c of
+          '+':
+            begin
+              if ((next >= 'A') and (next <= 'Z')) then
+              begin
+                decodedChar := Char(ord(next) + 32);
+              end
+              else
+              begin
+                exit('');
+              end
+            end;
+          '$':
+            begin
+              if ((next >= 'A') and (next <= 'Z')) then
+              begin
+                decodedChar := Char(ord(next) - 64);
+              end
+              else
+              begin
+                exit('');
+              end
+            end;
+          '%':
+            begin
+              if ((next >= 'A') and (next <= 'E')) then
+                decodedChar := Char(ord(next) - 38)
+              else if ((next >= 'F') and (next <= 'W')) then
+                decodedChar := Char(ord(next) - 11)
+              else
+              begin
+                exit('');
+              end;
+
+            end;
+          '/':
+            begin
+              if ((next >= 'A') and (next <= 'O')) then
+              begin
+                decodedChar := Char(ord(next) - 32);
+              end
+              else if (next = 'Z') then
+              begin
+                decodedChar := ':';
+              end
+              else
+                exit('');
+            end;
+
+        end;
+
+        decoded.Append(decodedChar);
+        Inc(i);
+      end
+      else
+        decoded.Append(c);
+
+      Inc(i);
+    end; // end loop/while
+
+    Result := decoded.ToString;
+  finally
+    decoded.Free;
+  end;
+
+end;
+
+function TCode39Reader.decodeRow(const rowNumber: Integer; const row: IBitArray;
+  const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  decodedChar: Char;
+  lastStart: Integer;
+  index, nextStart, counter, aEnd, pattern, lastPatternSize: Integer;
+  start: TArray<Integer>;
+  resultString: String;
+  Left, Right: Single;
+  resultPoints: TArray<IResultPoint>;
+  resultPointLeft, resultPointRight: IResultPoint;
+  whiteSpaceAfterEnd: Integer;
+  i, max, total: Integer;
+begin
+  for index := 0 to length(counters) - 1 do
+  begin
+    counters[index] := 0;
+  end;
+
+  decodeRowResult.length := 0;
+
+  start := self.findAsteriskPattern(row);
+  if (start = nil) then
+  begin
+    Result := nil;
+    exit
+  end;
+  nextStart := row.getNextSet(start[1]);
+  aEnd := row.Size;
+  repeat
+    if (not TOneDReader.recordPattern(row, nextStart, self.counters)) then
+    begin
+      Result := nil;
+      exit
+    end;
+
+    pattern := TCode39Reader.toNarrowWidePattern(self.counters);
+    if (pattern < 0) then
+    begin
+      Result := nil;
+      exit
+    end;
+
+    if (not TCode39Reader.patternToChar(pattern, decodedChar)) then
+    begin
+      Result := nil;
+      exit
+    end;
+
+    self.decodeRowResult.Append(decodedChar);
+    lastStart := nextStart;
+
+    for counter in self.counters do
+    begin
+      Inc(nextStart, counter)
+    end;
+
+    nextStart := row.getNextSet(nextStart)
+
+  until (decodedChar = '*');
+
+  self.decodeRowResult.Remove((self.decodeRowResult.length - 1), 1);
+
+  lastPatternSize := 0;
+
+  for counter in self.counters do
+  begin
+    Inc(lastPatternSize, counter)
+  end;
+
+  whiteSpaceAfterEnd := nextStart - lastStart - lastPatternSize;
+
+  if (nextStart <> aEnd) and ((whiteSpaceAfterEnd shl 1) < lastPatternSize) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  if (usingCheckDigit) then
+  begin
+    max := self.decodeRowResult.length - 1;
+    total := 0;
+    for i := 0 to max - 1 do
+    begin
+      Inc(total, ALPHABET_STRING.indexOf(decodeRowResult.Chars[i]));
+    end;
+
+    if (self.decodeRowResult.Chars[max] <> ALPHABET_STRING[total mod 43]) then
+    begin
+      Result := nil;
+      exit
+    end;
+
+    self.decodeRowResult.Remove(max, self.decodeRowResult.length);
+  end;
+
+  if (self.decodeRowResult.length = 0) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  if extendedMode then
+    resultString := TCode39Reader.decodeExtended
+      (self.decodeRowResult.ToString())
+  else
+    resultString := decodeRowResult.ToString();
+
+  if (resultString = '') then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  Left := (start[1] + start[0]) / 2;
+  Right := lastStart + (lastPatternSize / 2);
+
+  resultPointLeft := TResultPointHelpers.CreateResultPoint(Left, rowNumber);
+  resultPointRight := TResultPointHelpers.CreateResultPoint(Right, rowNumber);
+  resultPoints := [resultPointLeft, resultPointRight];
+
+  Result := TReadResult.Create(resultString, nil, resultPoints,
+    TBarcodeFormat.CODE_39);
+
+end;
+
+function TCode39Reader.findAsteriskPattern(row: IBitArray): TArray<Integer>;
+var
+  i, l, patternStart, patternLength, width, counterPosition, rowOffset,
+    index: Integer;
+  isWhite: boolean;
+
+begin
+  width := row.Size;
+  rowOffset := row.getNextSet(0);
+  index := 0;
+  while (index < length(self.counters)) do
+  begin
+    self.counters[index] := 0;
+    Inc(index)
+  end;
+
+  counterPosition := 0;
+  patternStart := rowOffset;
+  isWhite := False;
+  patternLength := length(counters);
+
+  for i := rowOffset to width - 1 do
+  begin
+
+    if (row[i] xor isWhite) then
+    begin
+      Inc(counters[counterPosition])
+    end
+    else
+    begin
+      if (counterPosition = (patternLength - 1)) then
+      begin
+
+        if (TCode39Reader.toNarrowWidePattern(counters)
+          = TCode39Reader.ASTERISK_ENCODING) then
+        begin
+          Result := TArray<Integer>.Create(patternStart, i);
+          exit
+        end;
+
+        Inc(patternStart, (counters[0] + counters[1]));
+
+        for l := 2 to patternLength - 2 do
+        begin
+          counters[l - 2] := counters[l];
+        end;
+
+        counters[(patternLength - 2)] := 0;
+        counters[(patternLength - 1)] := 0;
+        dec(counterPosition)
+
+      end
+      else
+        Inc(counterPosition);
+
+      counters[counterPosition] := 1;
+      isWhite := not isWhite
+    end;
+  end;
+
+  Result := nil;
+
+end;
+
+class function TCode39Reader.patternToChar(pattern: Integer;
+  var c: Char): boolean;
+var
+  i: Integer;
+begin
+  i := 0;
+  while (i < length(TCode39Reader.CHARACTER_ENCODINGS)) do
+  begin
+    if (TCode39Reader.CHARACTER_ENCODINGS[i] = pattern) then
+    begin
+      c := TCode39Reader.ALPHABET[i];
+      begin
+        Result := true;
+        exit
+      end
+    end;
+    Inc(i)
+  end;
+  c := '*';
+  Result := False;
+end;
+
+class function TCode39Reader.toNarrowWidePattern
+  (counters: TArray<Integer>): Integer;
+var
+  numCounters: Integer;
+  maxNarrowCounter: Integer;
+  wideCounters: Integer;
+  minCounter: Integer;
+  counter: Integer;
+  totalWideCountersWidth: Integer;
+  pattern: Integer;
+  i: Integer;
+begin
+  numCounters := length(counters);
+  maxNarrowCounter := 0;
+
+  repeat
+    minCounter := High(Integer);
+    for counter in counters do
+    begin
+      if (counter < minCounter) and (counter > maxNarrowCounter) then
+        minCounter := counter;
+    end;
+
+    maxNarrowCounter := minCounter;
+    wideCounters := 0;
+    totalWideCountersWidth := 0;
+    pattern := 0;
+    for i := 0 to numCounters - 1 do
+    begin
+      counter := counters[i];
+      if (counter > maxNarrowCounter) then
+      begin
+        pattern := pattern or (1 shl (numCounters - 1 - i));
+        Inc(wideCounters);
+        Inc(totalWideCountersWidth, counter);
+      end;
+    end;
+    if (wideCounters = 3) then
+    begin
+      // Found 3 wide counters, but are they close enough in width?
+      // We can perform a cheap, conservative check to see if any individual
+      // counter is more than 1.5 times the average:
+      i := 0;
+      while (i < numCounters) and (wideCounters > 0) do
+      begin
+        counter := counters[i];
+        if (counter > maxNarrowCounter) then
+        begin
+          dec(wideCounters);
+          // totalWideCountersWidth = 3 * average, so this checks if counter >= 3/2 * average
+          if ((counter * 2) >= totalWideCountersWidth) then
+          begin
+            Result := -1;
+            exit;
+          end;
+        end;
+        Inc(i);
+      end;
+      Result := pattern;
+      exit;
+    end;
+  until (wideCounters <= 3);
+  Result := -1;
+end;
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.Code93Reader.pas

@@ -0,0 +1,523 @@
+{
+  * Copyright 2010 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.OneD.Code93Reader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  Math,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// <p>Decodes Code 93 barcodes.</p>
+  /// <see cref="TCode39Reader" />
+  /// </summary>
+  TCode93Reader = class sealed(TOneDReader)
+  private
+    class var ALPHABET: TArray<Char>;
+    class function checkChecksums(pResult: TStringBuilder): boolean; static;
+    class function checkOneChecksum(pResult: TStringBuilder;
+      checkPosition, weightMax: Integer): boolean;
+    class function decodeExtended(encoded: TStringBuilder): string; static;
+
+    function findAsteriskPattern(row: IBitArray): TArray<Integer>;
+    class function patternToChar(pattern: Integer; var c: Char)
+      : boolean; static;
+    class function toPattern(counters: TArray<Integer>): Integer; static;
+
+  const
+    ALPHABET_STRING
+      : string = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%abcd*';
+    class var ASTERISK_ENCODING: Integer;
+
+  class var
+    CHARACTER_ENCODINGS: TArray<Integer>;
+    counters: TArray<Integer>;
+    decodeRowResult: TStringBuilder;
+
+  public
+    constructor Create;
+    destructor Destroy; override;
+
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      override;
+  end;
+
+implementation
+
+{ Code93Reader }
+
+constructor TCode93Reader.Create;
+begin
+  ALPHABET := '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%abcd*'.ToCharArray;
+  CHARACTER_ENCODINGS := TArray<Integer>.Create($114, $148, $144, $142, $128,
+    $124, 290, $150, $112, $10A, $1A8, 420, $1A2, $194, $192, $18A, 360, $164,
+    $162, $134, $11A, $158, $14C, $146, 300, $116, $1B4, $1B2, $1AC, $1A6, $196,
+    410, $16C, $166, 310, $13A, $12E, $1D4, $1D2, $1CA, $16E, $176, 430, $126,
+    $1DA, 470, $132, 350);
+
+  ASTERISK_ENCODING := TCode93Reader.CHARACTER_ENCODINGS[$2F];
+
+  counters := TArray<Integer>.Create();
+  SetLength(counters, 6);
+  decodeRowResult := TStringBuilder.Create();
+end;
+
+destructor TCode93Reader.Destroy;
+begin
+  ALPHABET := nil;
+  CHARACTER_ENCODINGS := nil;
+  counters := nil;
+  FreeAndNil(decodeRowResult);
+  inherited;
+end;
+
+class function TCode93Reader.checkChecksums(pResult: TStringBuilder): boolean;
+var
+  length: Integer;
+begin
+  length := pResult.length;
+  if (not TCode93Reader.checkOneChecksum(pResult, (length - 2), 20)) then
+  begin
+    Result := false;
+    exit
+  end;
+  if (not TCode93Reader.checkOneChecksum(pResult, (length - 1), 15)) then
+  begin
+    Result := false;
+    exit
+  end;
+  begin
+    Result := true;
+    exit
+  end
+end;
+
+class function TCode93Reader.checkOneChecksum(pResult: TStringBuilder;
+  checkPosition, weightMax: Integer): boolean;
+var
+  weight, total, i: Integer;
+begin
+  weight := 1;
+  total := 0;
+  i := (checkPosition - 1);
+  while ((i >= 0)) do
+  begin
+
+    inc(total, (weight * ALPHABET_STRING.IndexOf(pResult.Chars[i])));
+
+    inc(weight);
+
+    if (weight > weightMax) then
+      weight := 1;
+
+    dec(i)
+  end;
+
+  if (pResult.Chars[checkPosition] <> TCode93Reader.ALPHABET[(total mod $2F)])
+  then
+  begin
+    Result := false;
+    exit
+  end;
+  begin
+    Result := true;
+    exit
+  end
+end;
+
+class function TCode93Reader.decodeExtended(encoded: TStringBuilder): string;
+var
+  next, c: Char;
+  decodedChar: Char;
+  length, i: Integer;
+  decoded: TStringBuilder;
+
+label Label_0179, Label_0169, Label_014A;
+
+begin
+  length := encoded.length;
+  decoded := TStringBuilder.Create(length);
+  try
+    i := 0;
+    next := Char(0);
+    while ((i < length)) do
+    begin
+
+      c := encoded.Chars[i];
+
+      if ((c < 'a') or (c > 'd')) then
+        goto Label_0179;
+
+      if (i < (length - 1)) then
+      begin
+
+        next := encoded.Chars[(i + 1)];
+        decodedChar := #0;
+
+        case c of
+          'a':
+            begin
+              if ((next < 'A') or (next > 'Z')) then
+              begin
+                Result := '';
+                exit
+              end;
+              decodedChar := Char(ord(next) - ord('@'));
+              goto Label_0169
+            end;
+          'b':
+            begin
+              if ((next < 'A') or (next > 'E')) then
+                break;;
+              decodedChar := Char(ord(next) - ord('&'));
+              goto Label_0169
+            end;
+          'c':
+            begin
+              if ((next < 'A') or (next > 'O')) then
+                goto Label_014A;
+              decodedChar := Char(ord(next) - ord(' '));
+              goto Label_0169
+            end;
+          'd':
+            begin
+              if ((next < 'A') or (next > 'Z')) then
+              begin
+                Result := '';
+                exit
+              end;
+              decodedChar := Char(ord(next) + ord(' '));
+              goto Label_0169
+            end;
+        else
+          begin
+            goto Label_0169
+          end;
+        end;
+        if ((next >= 'F') and (next <= 'W')) then
+        begin
+          decodedChar := Char(ord(next) - ord(''));
+          goto Label_0169
+        end
+      end;
+      begin
+        Result := '';
+        exit
+      end;
+
+    Label_014A:
+      if (next = 'Z') then
+        decodedChar := ':'
+      else
+      begin
+        Result := '';
+        exit
+      end;
+
+    Label_0169:
+      decoded.Append(decodedChar);
+      inc(i);
+      continue;
+
+    Label_0179:
+      decoded.Append(c);
+      inc(i)
+    end;
+
+    Result := decoded.ToString;
+
+  finally
+    FreeAndNil(decoded);
+  end;
+
+end;
+
+function TCode93Reader.decodeRow(const rowNumber: Integer; const row: IBitArray;
+  const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  decodedChar: Char;
+  lastStart: Integer;
+  index, nextStart, counter, aEnd, pattern, lastPatternSize: Integer;
+  start: TArray<Integer>;
+  resultString: String;
+  Left, Right: Single;
+  resultPointCallback: TResultPointCallback;
+  obj: TObject;
+  resultPoints: TArray<IResultPoint>;
+  resultPointLeft, resultPointRight: IResultPoint;
+begin
+  for index := 0 to length(counters) - 1 do
+    counters[index] := 0;
+
+  decodeRowResult.length := 0;
+
+  start := self.findAsteriskPattern(row);
+  if (start = nil) then
+  begin
+    Result := nil;
+    exit
+  end;
+  nextStart := row.getNextSet(start[1]);
+  aEnd := row.Size;
+  repeat
+    if (not TOneDReader.recordPattern(row, nextStart, self.counters)) then
+    begin
+      Result := nil;
+      exit
+    end;
+    pattern := TCode93Reader.toPattern(self.counters);
+    if (pattern < 0) then
+    begin
+      Result := nil;
+      exit
+    end;
+    if (not TCode93Reader.patternToChar(pattern, decodedChar)) then
+    begin
+      Result := nil;
+      exit
+    end;
+
+    self.decodeRowResult.Append(decodedChar);
+    lastStart := nextStart;
+
+    for counter in self.counters do
+    begin
+      inc(nextStart, counter)
+    end;
+    nextStart := row.getNextSet(nextStart)
+
+  until (decodedChar = '*');
+
+  self.decodeRowResult.Remove((self.decodeRowResult.length - 1), 1);
+
+  lastPatternSize := 0;
+
+  for counter in self.counters do
+  begin
+    inc(lastPatternSize, counter)
+  end;
+
+  if (not((nextStart <> aEnd) and row[nextStart])) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  if (self.decodeRowResult.length < 2) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  if (not TCode93Reader.checkChecksums(self.decodeRowResult)) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  self.decodeRowResult.length := self.decodeRowResult.length - 2;
+
+  resultString := TCode93Reader.decodeExtended(self.decodeRowResult);
+  if (resultString = '') then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  Left := (start[1] + start[0]) div 2;
+  Right := (lastStart + lastPatternSize) / 2;
+
+  resultPointLeft := TResultPointHelpers.CreateResultPoint(Left, rowNumber);
+  resultPointRight := TResultPointHelpers.CreateResultPoint(Right, rowNumber);
+  resultPoints := [resultPointLeft, resultPointRight];
+
+  resultPointCallback := nil;
+  // it is a local variable: it doesn't get NIL as default value, and the following ifs do not assign a value for all possible cases
+
+  if ((hints = nil) or
+    (not hints.ContainsKey(TDecodeHintType.NEED_RESULT_POINT_CALLBACK))) then
+    resultPointCallback := nil
+  else
+  begin
+    obj := hints[TDecodeHintType.NEED_RESULT_POINT_CALLBACK];
+    if (obj is TResultPointEventObject) then
+      resultPointCallback := TResultPointEventObject(obj).Event;
+  end;
+
+  if Assigned(resultPointCallback) then
+  begin
+    resultPointCallback(resultPointLeft);
+    resultPointCallback(resultPointRight);
+  end;
+
+  Result := TReadResult.Create(resultString, nil, resultPoints,
+    TBarcodeFormat.CODE_93);
+end;
+
+function TCode93Reader.findAsteriskPattern(row: IBitArray): TArray<Integer>;
+var
+  i, l, patternStart, patternLength, width, counterPosition, rowOffset,
+    index: Integer;
+  isWhite: boolean;
+
+begin
+  width := row.Size;
+  rowOffset := row.getNextSet(0);
+  index := 0;
+  while (index < length(self.counters)) do
+  begin
+    self.counters[index] := 0;
+    inc(index)
+  end;
+
+  counterPosition := 0;
+  patternStart := rowOffset;
+  isWhite := false;
+  patternLength := length(counters);
+
+  for i := rowOffset to width - 1 do
+  begin
+
+    if (row[i] xor isWhite) then
+    begin
+      inc(counters[counterPosition])
+    end
+    else
+    begin
+      if (counterPosition = (patternLength - 1)) then
+      begin
+
+        if (TCode93Reader.toPattern(counters) = TCode93Reader.ASTERISK_ENCODING)
+        then
+        begin
+          Result := TArray<Integer>.Create(patternStart, i);
+          exit
+        end;
+
+        inc(patternStart, (counters[0] + counters[1]));
+
+        for l := 2 to patternLength - 2 do
+        begin
+          counters[l - 2] := counters[l];
+        end;
+
+        counters[(patternLength - 2)] := 0;
+        counters[(patternLength - 1)] := 0;
+        dec(counterPosition)
+
+      end
+      else
+        inc(counterPosition);
+
+      counters[counterPosition] := 1;
+      isWhite := not isWhite
+    end;
+  end;
+
+  Result := nil;
+
+end;
+
+class function TCode93Reader.patternToChar(pattern: Integer;
+  var c: Char): boolean;
+var
+  i: Integer;
+begin
+  i := 0;
+  while (i < length(TCode93Reader.CHARACTER_ENCODINGS)) do
+  begin
+    if (TCode93Reader.CHARACTER_ENCODINGS[i] = pattern) then
+    begin
+      c := TCode93Reader.ALPHABET[i];
+      begin
+        Result := true;
+        exit
+      end
+    end;
+    inc(i)
+  end;
+  c := '*';
+  Result := false;
+end;
+
+class function TCode93Reader.toPattern(counters: TArray<Integer>): Integer;
+var
+  counter, max, sum, pattern, i, j, scaledShifted, scaledUnshifted: Integer;
+begin
+  max := length(counters);
+  sum := 0;
+
+  for counter in counters do
+  begin
+    inc(sum, counter)
+  end;
+
+  pattern := 0;
+  i := 0;
+  while ((i < max)) do
+  begin
+
+    scaledShifted := (((counters[i] shl TOneDReader.INTEGER_MATH_SHIFT) *
+      9) div sum);
+
+    scaledUnshifted := TMathUtils.Asr(scaledShifted,
+      TOneDReader.INTEGER_MATH_SHIFT);
+
+    if ((scaledShifted and $FF) > $7F) then
+      inc(scaledUnshifted);
+
+    if ((scaledUnshifted < 1) or (scaledUnshifted > 4)) then
+    begin
+      Result := -1;
+      exit
+    end;
+
+    if ((i and 1) = 0) then
+    begin
+      j := 0;
+
+      while ((j < scaledUnshifted)) do
+      begin
+        pattern := ((pattern shl 1) or 1);
+        inc(j)
+      end
+    end
+    else
+      pattern := (pattern shl scaledUnshifted);
+
+    inc(i)
+  end;
+
+  Result := pattern;
+
+end;
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.EAN13Reader.pas

@@ -0,0 +1,219 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: dswitkin@google.com (Daniel Switkin), Sean Owen and
+  *                   alasdair@google.com (Alasdair Mackintosh)
+  * Delphi Implementation by K. Gossens, E. Spelt
+}
+
+unit ZXing.OneD.EAN13Reader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  System.Math,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.OneD.UPCEANReader,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat;
+
+type
+  /// <summary>
+  /// <p>Implements decoding of the EAN-13 format.</p>
+  /// </summary>
+  TEAN13Reader = class(TUPCEANReader)
+  private
+    // For an EAN-13 barcode, the first digit is represented by the parities used
+    // to encode the next six digits, according to the table below. For example,
+    // if the barcode is 5 123456 789012 then the value of the first digit is
+    // signified by using odd for '1', even for '2', even for '3', odd for '4',
+    // odd for '5', and even for '6'. See http://en.wikipedia.org/wiki/EAN-13
+    //
+    // Parity of next 6 digits
+    // Digit   0     1     2     3     4     5
+    // 0    Odd   Odd   Odd   Odd   Odd   Odd
+    // 1    Odd   Odd   Even  Odd   Even  Even
+    // 2    Odd   Odd   Even  Even  Odd   Even
+    // 3    Odd   Odd   Even  Even  Even  Odd
+    // 4    Odd   Even  Odd   Odd   Even  Even
+    // 5    Odd   Even  Even  Odd   Odd   Even
+    // 6    Odd   Even  Even  Even  Odd   Odd
+    // 7    Odd   Even  Odd   Even  Odd   Even
+    // 8    Odd   Even  Odd   Even  Even  Odd
+    // 9    Odd   Even  Even  Odd   Even  Odd
+    //
+    // Note that the encoding for '0' uses the same parity as a UPC barcode. Hence
+    // a UPC barcode can be converted to an EAN-13 barcode by prepending a 0.
+    //
+    // The encoding is represented by the following array, which is a bit pattern
+    // using Odd = 0 and Even = 1. For example, 5 is represented by:
+    //
+    // Odd Even Even Odd Odd Even
+    // in binary:
+    // 0    1    1   0   0    1   == 0x19
+    //
+  class var
+    FIRST_DIGIT_ENCODINGS: TArray<Integer>;
+    decodeMiddleCounters: TArray<Integer>;
+
+    /// <summary>
+    /// Based on pattern of odd-even ('L' and 'G') patterns used to encoded the explicitly-encoded
+    /// digits in a barcode, determines the implicitly encoded first digit and adds it to the
+    /// result string.
+    /// </summary>
+    /// <param name="resultString">string to insert decoded first digit into</param>
+    /// <param name="lgPatternFound">int whose bits indicates the pattern of odd/even L/G patterns used to</param>
+    /// encode digits
+    /// <return>-1 if first digit cannot be determined</return>
+    class function determineFirstDigit(const resultString: TStringBuilder;
+      const lgPatternFound: Integer): Boolean; static;
+
+    class procedure InitializeClass; static;
+    class procedure FinalizeClass; static;
+  protected
+    public
+
+      /// <summary>
+    /// Subclasses override this to decode the portion of a barcode between the start
+    /// and end guard patterns.
+    /// </summary>
+    /// <param name="row">row of black/white values to search</param>
+    /// <param name="startRange">start/end offset of start guard pattern</param>
+    /// <param name="resultString"><see cref="StringBuilder"/>to append decoded chars to</param>
+    /// <returns>
+    /// horizontal offset of first pixel after the "middle" that was decoded or -1 if decoding could not complete successfully
+    /// </returns>
+    class function DecodeMiddle(const row: IBitArray;
+      const startRange: TArray<Integer>; const resultString: TStringBuilder)
+      : Integer; override;
+
+
+
+    /// <summary>
+    /// Get the format of this decoder.
+    /// <returns>The 1D format.</returns>
+    /// </summary>
+    function BarcodeFormat: TBarcodeFormat; override;
+  end;
+
+implementation
+
+{ TEAN13Reader }
+
+class function TEAN13Reader.DecodeMiddle(const row: IBitArray;
+  const startRange: TArray<Integer>;
+  const resultString: TStringBuilder): Integer;
+var
+  bestMatch: Integer;
+  counter: Integer;
+  ending: Integer;
+  counters, middleRange: TArray<Integer>;
+  rowOffset, x, lgPatternFound: Integer;
+begin
+  Result := -1;
+  counters := decodeMiddleCounters;
+  counters[0] := 0;
+  counters[1] := 0;
+  counters[2] := 0;
+  counters[3] := 0;
+  ending := row.Size;
+  rowOffset := startRange[1];
+  lgPatternFound := 0;
+
+  x := 0;
+  while ((x < 6) and (rowOffset < ending)) do
+  begin
+    if (not decodeDigit(row, counters, rowOffset, L_AND_G_PATTERNS, bestMatch))
+    then
+      exit;
+    resultString.Append( IntToStr ( bestMatch mod 10) );
+    for counter in counters do
+      Inc(rowOffset, counter);
+    if (bestMatch >= 10) then
+      lgPatternFound := lgPatternFound or (1 shl (5 - x));
+    Inc(x);
+  end;
+
+  if (not determineFirstDigit(resultString, lgPatternFound)) then
+    exit;
+
+  middleRange := findGuardPattern(row, rowOffset, true, MIDDLE_PATTERN);
+  if (middleRange = nil) then
+    exit;
+  rowOffset := middleRange[1];
+
+  x := 0;
+  while ((x < 6) and (rowOffset < ending)) do
+  begin
+    if (not decodeDigit(row, counters, rowOffset, L_PATTERNS, bestMatch)) then
+      exit;
+    resultString.Append(IntToStr(bestMatch));
+    for counter in counters do
+      Inc(rowOffset, counter);
+    Inc(x);
+  end;
+
+  Result := rowOffset;
+end;
+
+function TEAN13Reader.BarcodeFormat: TBarcodeFormat;
+begin
+  Result := TBarcodeFormat.EAN_13;
+end;
+
+class function TEAN13Reader.determineFirstDigit(const resultString
+  : TStringBuilder; const lgPatternFound: Integer): Boolean;
+var
+  d: Integer;
+begin
+  Result := false;
+  for d := 0 to Pred(10) do
+  begin
+    if (lgPatternFound = FIRST_DIGIT_ENCODINGS[d]) then
+    begin
+      resultString.Insert(0,  IntToStr(d));
+      Result := true;
+      break;
+    end;
+  end;
+end;
+
+class procedure TEAN13Reader.InitializeClass;
+begin
+  FIRST_DIGIT_ENCODINGS := TArray<Integer>.Create($00, $0B, $0D, $0E, $13, $19,
+    $1C, $15, $16, $1A);
+  SetLength(decodeMiddleCounters, 4);
+end;
+
+class procedure TEAN13Reader.FinalizeClass;
+begin
+  FIRST_DIGIT_ENCODINGS := nil;
+  decodeMiddleCounters := nil;
+end;
+
+initialization
+
+TEAN13Reader.InitializeClass;
+
+finalization
+
+TEAN13Reader.FinalizeClass;
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.EAN8Reader.pas

@@ -0,0 +1,148 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: dswitkin@google.com (Daniel Switkin), Sean Owen and
+  *                   alasdair@google.com (Alasdair Mackintosh)
+  *
+  * Delphi Implementation by E. Spelt
+}
+
+unit ZXing.OneD.EAN8Reader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  System.Math,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.OneD.UPCEANReader,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat;
+
+type
+  /// <summary>
+  /// <p>Implements decoding of the EAN-8 format.</p>
+  /// </summary>
+  TEAN8Reader = class(TUPCEANReader)
+
+  private
+    class var DecodeMiddleCounters: TArray<Integer>;
+
+    class procedure DoInitialize();
+    class procedure DoFinalize();
+  public
+    class function DecodeMiddle(const row: IBitArray;
+      const startRange: TArray<Integer>; const resultString: TStringBuilder)
+      : Integer; override;
+
+    function BarcodeFormat: TBarcodeFormat; override;
+  end;
+
+implementation
+
+function TEAN8Reader.BarcodeFormat: TBarcodeFormat;
+begin
+  result := TBarcodeFormat.EAN_8;
+end;
+
+class procedure TEAN8Reader.DoFinalize;
+begin
+  DecodeMiddleCounters := nil;
+end;
+
+class procedure TEAN8Reader.DoInitialize;
+begin
+  SetLength(DecodeMiddleCounters, 4);
+end;
+
+class function TEAN8Reader.DecodeMiddle(const row: IBitArray;
+  const startRange: TArray<Integer>;
+  const resultString: TStringBuilder): Integer;
+var
+  ending, rowOffset, x, bestMatch: Integer;
+  counter: Integer;
+  counters, middleRange: TArray<Integer>;
+begin
+  counters := self.DecodeMiddleCounters;
+  counters[0] := 0;
+  counters[1] := 0;
+  counters[2] := 0;
+  counters[3] := 0;
+  ending := row.Size;
+  rowOffset := startRange[1];
+  x := 0;
+  while (((x < 4) and (rowOffset < ending))) do
+  begin
+    if (not TUPCEANReader.decodeDigit(row, counters, rowOffset,
+      TUPCEANReader.L_PATTERNS, bestMatch)) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    resultString.Append(IntToStr(bestMatch));
+
+    for counter in counters do
+    begin
+      inc(rowOffset, counter)
+    end;
+    inc(x)
+  end;
+
+  middleRange := TUPCEANReader.findGuardPattern(row, rowOffset, true,
+    TUPCEANReader.MIDDLE_PATTERN);
+  if (middleRange = nil) then
+  begin
+    result := -1;
+    exit
+  end;
+
+  rowOffset := middleRange[1];
+  x := 0;
+  while (((x < 4) and (rowOffset < ending))) do
+  begin
+    if (not TUPCEANReader.decodeDigit(row, counters, rowOffset,
+      TUPCEANReader.L_PATTERNS, bestMatch)) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    resultString.Append(IntToStr(bestMatch));
+    for counter in counters do
+    begin
+      inc(rowOffset, counter)
+    end;
+
+    inc(x)
+  end;
+
+  result := rowOffset;
+
+end;
+
+initialization
+
+TEAN8Reader.DoInitialize;
+
+finalization
+
+TEAN8Reader.DoFinalize;
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.EANManufacturerOrgSupport.pas

@@ -0,0 +1,230 @@
+{
+  * Copyright 2010 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.OneD.EANManufacturerOrgSupport;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Classes,
+  System.Generics.Collections,
+  System.Math,
+  ZXing.OneD.UPCEANExtension2Support,
+  ZXing.OneD.UPCEANExtension5Support,
+  ZXing.Reader,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultMetadataType,
+  ZXing.ResultPoint,
+  ZXing.Common.BitArray,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  // <summary>
+  /// Records EAN prefix to GS1 Member Organization, where the member organization
+  /// correlates strongly with a country. This is an imperfect means of identifying
+  /// a country of origin by EAN-13 barcode value. See
+  /// <a href="http://en.wikipedia.org/wiki/List_of_GS1_country_codes">
+  /// http://en.wikipedia.org/wiki/List_of_GS1_country_codes</a>.
+  /// </summary>
+  TEANManufacturerOrgSupport = class sealed
+  private
+  var
+    ranges: TList<TArray<Integer>>;
+    countryIdentifiers: TStringList;
+
+    procedure add(const range: TArray<Integer>; const id: string);
+    procedure initIfNeeded;
+  public
+    constructor Create;
+    destructor Destroy; override;
+
+    function lookupCountryIdentifier(const productCode: String): String;
+  end;
+
+implementation
+
+{ TEANManufacturerOrgSupport }
+
+constructor TEANManufacturerOrgSupport.Create;
+begin
+  ranges := TList < TArray < Integer >>.Create;
+  countryIdentifiers := TStringList.Create;
+end;
+
+destructor TEANManufacturerOrgSupport.Destroy;
+begin
+  countryIdentifiers.Free;
+  ranges.Free;
+  inherited;
+end;
+
+function TEANManufacturerOrgSupport.lookupCountryIdentifier(const productCode
+  : String): String;
+var
+  i, prefix, max: Integer;
+  range: TArray<Integer>;
+  start, ending: Integer;
+begin
+  Result := '';
+
+  initIfNeeded;
+  prefix := Integer.Parse(productCode.Substring(0, 3));
+  max := ranges.Count;
+  for i := 0 to Pred(max) do
+  begin
+    range := ranges[i];
+    start := range[0];
+    if (prefix < start) then
+      exit;
+    if (Length(range) = 1) then
+      ending := start
+    else
+      ending := range[1];
+    if (prefix <= ending) then
+    begin
+      Result := countryIdentifiers[i];
+      break;
+    end;
+  end;
+end;
+
+procedure TEANManufacturerOrgSupport.add(const range: TArray<Integer>;
+  const id: string);
+begin
+  ranges.add(range);
+  countryIdentifiers.add(id);
+end;
+
+procedure TEANManufacturerOrgSupport.initIfNeeded;
+begin
+  if (ranges.Count = 0) then
+  begin
+    add(TArray<Integer>.Create(0, 19), 'US/CA');
+    add(TArray<Integer>.Create(30, 39), 'US');
+    add(TArray<Integer>.Create(60, 139), 'US/CA');
+    add(TArray<Integer>.Create(300, 379), 'FR');
+    add(TArray<Integer>.Create(380), 'BG');
+    add(TArray<Integer>.Create(383), 'SI');
+    add(TArray<Integer>.Create(385), 'HR');
+    add(TArray<Integer>.Create(387), 'BA');
+    add(TArray<Integer>.Create(400, 440), 'DE');
+    add(TArray<Integer>.Create(450, 459), 'JP');
+    add(TArray<Integer>.Create(460, 469), 'RU');
+    add(TArray<Integer>.Create(471), 'TW');
+    add(TArray<Integer>.Create(474), 'EE');
+    add(TArray<Integer>.Create(475), 'LV');
+    add(TArray<Integer>.Create(476), 'AZ');
+    add(TArray<Integer>.Create(477), 'LT');
+    add(TArray<Integer>.Create(478), 'UZ');
+    add(TArray<Integer>.Create(479), 'LK');
+    add(TArray<Integer>.Create(480), 'PH');
+    add(TArray<Integer>.Create(481), 'BY');
+    add(TArray<Integer>.Create(482), 'UA');
+    add(TArray<Integer>.Create(484), 'MD');
+    add(TArray<Integer>.Create(485), 'AM');
+    add(TArray<Integer>.Create(486), 'GE');
+    add(TArray<Integer>.Create(487), 'KZ');
+    add(TArray<Integer>.Create(489), 'HK');
+    add(TArray<Integer>.Create(490, 499), 'JP');
+    add(TArray<Integer>.Create(500, 509), 'GB');
+    add(TArray<Integer>.Create(520), 'GR');
+    add(TArray<Integer>.Create(528), 'LB');
+    add(TArray<Integer>.Create(529), 'CY');
+    add(TArray<Integer>.Create(531), 'MK');
+    add(TArray<Integer>.Create(535), 'MT');
+    add(TArray<Integer>.Create(539), 'IE');
+    add(TArray<Integer>.Create(540, 549), 'BE/LU');
+    add(TArray<Integer>.Create(560), 'PT');
+    add(TArray<Integer>.Create(569), 'IS');
+    add(TArray<Integer>.Create(570, 579), 'DK');
+    add(TArray<Integer>.Create(590), 'PL');
+    add(TArray<Integer>.Create(594), 'RO');
+    add(TArray<Integer>.Create(599), 'HU');
+    add(TArray<Integer>.Create(600, 601), 'ZA');
+    add(TArray<Integer>.Create(603), 'GH');
+    add(TArray<Integer>.Create(608), 'BH');
+    add(TArray<Integer>.Create(609), 'MU');
+    add(TArray<Integer>.Create(611), 'MA');
+    add(TArray<Integer>.Create(613), 'DZ');
+    add(TArray<Integer>.Create(616), 'KE');
+    add(TArray<Integer>.Create(618), 'CI');
+    add(TArray<Integer>.Create(619), 'TN');
+    add(TArray<Integer>.Create(621), 'SY');
+    add(TArray<Integer>.Create(622), 'EG');
+    add(TArray<Integer>.Create(624), 'LY');
+    add(TArray<Integer>.Create(625), 'JO');
+    add(TArray<Integer>.Create(626), 'IR');
+    add(TArray<Integer>.Create(627), 'KW');
+    add(TArray<Integer>.Create(628), 'SA');
+    add(TArray<Integer>.Create(629), 'AE');
+    add(TArray<Integer>.Create(640, 649), 'FI');
+    add(TArray<Integer>.Create(690, 695), 'CN');
+    add(TArray<Integer>.Create(700, 709), 'NO');
+    add(TArray<Integer>.Create(729), 'IL');
+    add(TArray<Integer>.Create(730, 739), 'SE');
+    add(TArray<Integer>.Create(740), 'GT');
+    add(TArray<Integer>.Create(741), 'SV');
+    add(TArray<Integer>.Create(742), 'HN');
+    add(TArray<Integer>.Create(743), 'NI');
+    add(TArray<Integer>.Create(744), 'CR');
+    add(TArray<Integer>.Create(745), 'PA');
+    add(TArray<Integer>.Create(746), 'DO');
+    add(TArray<Integer>.Create(750), 'MX');
+    add(TArray<Integer>.Create(754, 755), 'CA');
+    add(TArray<Integer>.Create(759), 'VE');
+    add(TArray<Integer>.Create(760, 769), 'CH');
+    add(TArray<Integer>.Create(770), 'CO');
+    add(TArray<Integer>.Create(773), 'UY');
+    add(TArray<Integer>.Create(775), 'PE');
+    add(TArray<Integer>.Create(777), 'BO');
+    add(TArray<Integer>.Create(779), 'AR');
+    add(TArray<Integer>.Create(780), 'CL');
+    add(TArray<Integer>.Create(784), 'PY');
+    add(TArray<Integer>.Create(785), 'PE');
+    add(TArray<Integer>.Create(786), 'EC');
+    add(TArray<Integer>.Create(789, 790), 'BR');
+    add(TArray<Integer>.Create(800, 839), 'IT');
+    add(TArray<Integer>.Create(840, 849), 'ES');
+    add(TArray<Integer>.Create(850), 'CU');
+    add(TArray<Integer>.Create(858), 'SK');
+    add(TArray<Integer>.Create(859), 'CZ');
+    add(TArray<Integer>.Create(860), 'YU');
+    add(TArray<Integer>.Create(865), 'MN');
+    add(TArray<Integer>.Create(867), 'KP');
+    add(TArray<Integer>.Create(868, 869), 'TR');
+    add(TArray<Integer>.Create(870, 879), 'NL');
+    add(TArray<Integer>.Create(880), 'KR');
+    add(TArray<Integer>.Create(885), 'TH');
+    add(TArray<Integer>.Create(888), 'SG');
+    add(TArray<Integer>.Create(890), 'IN');
+    add(TArray<Integer>.Create(893), 'VN');
+    add(TArray<Integer>.Create(896), 'PK');
+    add(TArray<Integer>.Create(899), 'ID');
+    add(TArray<Integer>.Create(900, 919), 'AT');
+    add(TArray<Integer>.Create(930, 939), 'AU');
+    add(TArray<Integer>.Create(940, 949), 'AZ');
+    add(TArray<Integer>.Create(955), 'MY');
+    add(TArray<Integer>.Create(958), 'MO');
+  end;
+end;
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.ITFReader.pas

@@ -0,0 +1,497 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: kevin.osullivan@sita.aero, SITA Lab.
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.OneD.ITFReader;
+
+interface
+
+uses
+  System.SysUtils, 
+  System.Generics.Collections, 
+  Math, 
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray, 
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint, 
+  ZXing.BarcodeFormat,
+  ZXing.Helpers;
+
+type
+  /// <summary>
+  /// <p>Implements decoding of the ITF format, or Interleaved Two of Five.</p>
+  ///
+  /// <p>This Reader will scan ITF barcodes of certain lengths only.
+  /// At the moment it reads length 6, 8, 10, 12, 14, 16, 18, 20, 24, 44 and 48 as these have appeared "in the wild". Not all
+  /// lengths are scanned, especially shorter ones, to avoid false positives. This in turn is due to a lack of
+  /// required checksum function.</p>
+  ///
+  /// <p>The checksum is optional and is not applied by this Reader. The consumer of the decoded
+  /// value will have to apply a checksum if required.</p>
+  ///
+  /// <p><a href="http://en.wikipedia.org/wiki/Interleaved_2_of_5">http://en.wikipedia.org/wiki/Interleaved_2_of_5</a>
+  /// is a great reference for Interleaved 2 of 5 information.</p>
+  /// </summary>
+  TITFReader = class(TOneDReader)
+  const
+    LARGEST_DEFAULT_ALLOWED_LENGTH: Integer = 14;
+    N: Integer = 1;
+    W: Integer = 3;
+  private
+
+    class var PATTERNS: TArray<TArray<Integer>>;
+    class var END_PATTERN_REVERSED: TArray<Integer>;
+    class var MAX_AVG_VARIANCE: Integer;
+    class var MAX_INDIVIDUAL_VARIANCE: Integer;
+    class var DEFAULT_ALLOWED_LENGTHS: TArray<Integer>;
+
+  class var
+    START_PATTERN: TArray<Integer>;
+    narrowLineWidth: Integer;
+
+    class function decodeDigit(counters: TArray<Integer>;
+      out bestMatch: Integer): boolean; static;
+    function decodeEnd(row: IBitArray): TArray<Integer>;
+    class function skipWhiteSpace(row: IBitArray): Integer; static;
+    class function findGuardPattern(row: IBitArray; rowOffset: Integer;
+      pattern: TArray<Integer>): TArray<Integer>; static;
+    function validateQuietZone(row: IBitArray; startPattern: Integer): boolean;
+    function decodeStart(row: IBitArray): TArray<Integer>;
+    class function decodeMiddle(row: IBitArray;
+      payloadStart, payloadEnd: Integer; SBResult: TStringBuilder)
+      : boolean; static;
+    class procedure ClassInit();
+  public
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult; override;
+  end;
+
+implementation
+
+uses
+  ZXing.Common.Detector.MathUtils;
+
+{ TITFReader }
+
+class procedure TITFReader.ClassInit();
+begin
+  MAX_AVG_VARIANCE := Floor(PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.42);
+  MAX_INDIVIDUAL_VARIANCE := Floor(PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.78);
+
+  DEFAULT_ALLOWED_LENGTHS := [6, 8, 10, 12, 14];
+
+  START_PATTERN := [N, N, N, N];
+  END_PATTERN_REVERSED := [N, N, W];
+
+  PATTERNS := [[N, N, W, W, N], // 0
+  [W, N, N, N, W], // 1
+  [N, W, N, N, W], // 2
+  [W, W, N, N, N], // 3
+  [N, N, W, N, W], // 4
+  [W, N, W, N, N], // 5
+  [N, W, W, N, N], // 6
+  [N, N, N, W, W], // 7
+  [W, N, N, W, N], // 8
+  [N, W, N, W, N]]; // 9
+end;
+
+function TITFReader.decodeRow(const rowNumber: Integer; const row: IBitArray;
+  const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  allowedLength: Integer;
+  startRange: TArray<Integer>;
+  endRange: TArray<Integer>;
+  stringResult: string;
+  allowedLengths: TArray<Integer>;
+  maxAllowedLength: Integer;
+  len: Integer;
+  lengthOK: boolean;
+  SBResult: TStringBuilder;
+  resultPointCallback: TResultPointCallback;
+  obj: TObject;
+  resultPoints: TArray<IResultPoint>;
+  resultPointLeft,
+  resultPointRight: IResultPoint;
+begin
+  startRange := decodeStart(row);
+  if (startRange = nil) then
+  begin
+    Exit(nil);
+  end;
+
+  endRange := self.decodeEnd(row);
+  if (endRange = nil) then
+  begin
+    Exit(nil);
+  end;
+
+  SBResult := TStringBuilder.Create(20);
+  if (not decodeMiddle(row, startRange[1], endRange[0], SBResult)) then
+  begin
+    FreeAndNil(sbResult);
+    Exit(nil);
+  end;
+  stringResult := SBResult.ToString();
+  FreeAndNil(sbResult);
+
+  allowedLengths := nil;
+  maxAllowedLength := LARGEST_DEFAULT_ALLOWED_LENGTH;
+  if ((hints <> nil) and hints.ContainsKey(ZXing.DecodeHintType.ALLOWED_LENGTHS)) then
+  begin
+    allowedLengths := TArray<Integer>(hints[ZXing.DecodeHintType.ALLOWED_LENGTHS]);
+    maxAllowedLength := 0
+  end;
+
+  if (allowedLengths = nil) then
+  begin
+    allowedLengths := DEFAULT_ALLOWED_LENGTHS;
+    maxAllowedLength := LARGEST_DEFAULT_ALLOWED_LENGTH;
+  end;
+
+  len := Length(stringResult);
+  lengthOK := (len > LARGEST_DEFAULT_ALLOWED_LENGTH);
+  if (not lengthOK) then
+  begin
+
+    for allowedLength in allowedLengths do
+    begin
+
+      if (len = allowedLength) then
+      begin
+        lengthOK := true;
+        break;
+      end;
+
+      if (allowedLength > maxAllowedLength) then
+      begin
+        maxAllowedLength := allowedLength;
+      end;
+
+    end;
+
+    if ((not lengthOK) and (len > maxAllowedLength)) then
+    begin
+      lengthOK := true;
+    end;
+
+    if (not lengthOK) then
+    begin
+      Exit(nil);
+    end
+
+  end;
+
+  resultPointLeft := TResultPointHelpers.CreateResultPoint(startRange[1], rowNumber);
+  resultPointRight := TResultPointHelpers.CreateResultPoint(endRange[0], rowNumber);
+  resultPoints := [resultPointLeft, resultPointRight];
+
+  resultPointCallback := nil; // had to add this initialization because the following if/else construct does not assign a value
+                            // for all possible cases. Being resultPointCallback a local variable it is not initialized by default to null,
+                            // so you could get unpredictable results
+
+
+  if ((hints = nil) or
+      (not hints.ContainsKey(TDecodeHintType.NEED_RESULT_POINT_CALLBACK)))
+  then
+     resultPointCallback := nil
+  else
+  begin
+    obj := hints[TDecodeHintType.NEED_RESULT_POINT_CALLBACK];
+    if (obj is TResultPointEventObject)
+    then
+       resultPointCallback := TResultPointEventObject(obj).Event;
+  end;
+
+  if Assigned(resultPointCallback) then
+  begin
+    resultPointCallback(resultPointLeft);
+    resultPointCallback(resultPointRight);
+  end;
+
+  Result := TReadResult.Create(stringResult, nil, resultPoints,
+    TBarcodeFormat.ITF);
+end;
+
+class function TITFReader.decodeDigit(counters: TArray<Integer>;
+  out bestMatch: Integer): boolean;
+var
+  bestVariance: Integer;
+  max: Integer;
+  i: Integer;
+  pattern: TArray<Integer>;
+  variance: Integer;
+begin
+  bestVariance := MAX_AVG_VARIANCE;
+  bestMatch := -1;
+  max := Length(PATTERNS);
+  i := 0;
+  while ((i < max)) do
+  begin
+    pattern := PATTERNS[i];
+
+    variance := PatternMatchVariance(counters, pattern,
+      MAX_INDIVIDUAL_VARIANCE);
+    if (variance < bestVariance) then
+    begin
+      bestVariance := variance;
+      bestMatch := i
+    end;
+
+    inc(i)
+  end;
+
+  Result := (bestMatch >= 0);
+
+end;
+
+function TITFReader.decodeStart(row: IBitArray): TArray<Integer>;
+var
+  endStart: Integer;
+  startPattern: TArray<Integer>;
+begin
+  endStart := skipWhiteSpace(row);
+  if (endStart < 0) then
+  begin
+    Exit(nil);
+  end;
+
+  startPattern := findGuardPattern(row, endStart, START_PATTERN);
+  if (startPattern = nil) then
+  begin
+    Exit(nil);
+  end;
+
+  narrowLineWidth := TMathUtils.Asr(startPattern[1] - startPattern[0], 2);
+  if (not validateQuietZone(row, startPattern[0])) then
+  begin
+    Exit(nil);
+  end;
+
+  Result := startPattern;
+end;
+
+class function TITFReader.decodeMiddle(row: IBitArray;
+  payloadStart, payloadEnd: Integer; SBResult: TStringBuilder): boolean;
+var
+  bestMatch: Integer;
+  counterDigit: Integer;
+  counterDigitPair: TArray<Integer>;
+  counterBlack: TArray<Integer>;
+  counterWhite: TArray<Integer>;
+  k: Integer;
+  twoK: Integer;
+
+begin
+  SetLength(counterDigitPair, 10);
+  SetLength(counterBlack, 5);
+  SetLength(counterWhite, 5);
+
+  while ((payloadStart < payloadEnd)) do
+  begin
+    if (not RecordPattern(row, payloadStart, counterDigitPair)) then
+    begin
+      Exit(false);
+    end;
+
+    k := 0;
+    while ((k < 5)) do
+    begin
+      twoK := (k shl 1);
+      counterBlack[k] := counterDigitPair[twoK];
+      counterWhite[k] := counterDigitPair[(twoK + 1)];
+      inc(k)
+    end;
+
+    if (not decodeDigit(counterBlack, bestMatch)) then // @(bestMatch))) then
+    begin
+      Exit(false);
+    end;
+    SBResult.Append(char($30 + bestMatch));
+
+    if (not decodeDigit(counterWhite, bestMatch)) then // @(bestMatch))) then
+    begin
+      Exit(false);
+    end;
+
+    SBResult.Append(char($30 + bestMatch));
+
+    for counterDigit in counterDigitPair do
+    begin
+      inc(payloadStart, counterDigit);
+    end
+  end;
+
+  Result := true;
+end;
+
+function TITFReader.decodeEnd(row: IBitArray): TArray<Integer>;
+var
+  endStart: Integer;
+  endPattern: TArray<Integer>;
+  temp: Integer;
+begin
+  row.reverse;
+  endStart := skipWhiteSpace(row);
+  if (endStart < 0) then
+  begin
+    Exit(nil);
+  end;
+
+  // !!
+  endPattern := findGuardPattern(row, endStart, END_PATTERN_REVERSED);
+  if (endPattern = nil) then
+  begin
+    row.reverse;
+    Exit(nil);
+  end;
+
+  if (not validateQuietZone(row, endPattern[0])) then
+  begin
+    row.reverse;
+    Exit(nil);
+  end;
+
+  temp := endPattern[0];
+  endPattern[0] := row.Size - endPattern[1];
+  endPattern[1] := row.Size - temp;
+  row.reverse;
+
+  Result := endPattern;
+end;
+
+class function TITFReader.findGuardPattern(row: IBitArray; rowOffset: Integer;
+  pattern: TArray<Integer>): TArray<Integer>;
+var
+  patternLength: Integer;
+  counters: TArray<Integer>;
+  width: Integer;
+  isWhite: boolean;
+  counterPosition: Integer;
+  patternStart: Integer;
+  x: Integer;
+begin
+  patternLength := Length(pattern);
+  counters := TArray<Integer>.Create();
+  SetLength(counters, patternLength);
+  width := row.Size;
+  isWhite := false;
+
+  counterPosition := 0;
+  patternStart := rowOffset;
+  x := rowOffset;
+
+  while ((x < width)) do
+  begin
+
+    if (row[x] xor isWhite) then
+    begin
+      inc(counters[counterPosition]);
+    end
+    else
+    begin
+
+      if (counterPosition = (patternLength - 1)) then
+      begin
+
+        if (PatternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE) <
+          MAX_AVG_VARIANCE) then
+        begin
+          Result := [patternStart, x];
+          Exit(Result);
+        end;
+        inc(patternStart, (counters[0] + counters[1]));
+
+        counters := TArray.CopyInSameArray(counters, 2, patternLength - 2);
+
+        counters[(patternLength - 2)] := 0;
+        counters[(patternLength - 1)] := 0;
+        dec(counterPosition);
+
+      end
+      else
+      begin
+        inc(counterPosition);
+      end;
+
+      counters[counterPosition] := 1;
+      isWhite := not isWhite
+
+    end;
+
+    inc(x);
+  end;
+
+  Result := nil;
+
+end;
+
+class function TITFReader.skipWhiteSpace(row: IBitArray): Integer;
+var
+  width: Integer;
+  endStart: Integer;
+begin
+  width := row.Size;
+  endStart := row.getNextSet(0);
+  if (endStart = width) then
+  begin
+    Result := -1;
+  end
+  else
+  begin
+    Result := endStart;
+  end
+
+end;
+
+function TITFReader.validateQuietZone(row: IBitArray;
+  startPattern: Integer): boolean;
+var
+  quietCount: Integer;
+  i: Integer;
+begin
+  quietCount := (self.narrowLineWidth * 10);
+  if (quietCount >= startPattern) then
+  begin
+    quietCount := startPattern;
+  end;
+
+  i := (startPattern - 1);
+  while (((quietCount > 0) and (i >= 0))) do
+  begin
+    if (row[i]) then
+    begin
+      break;
+    end;
+    dec(quietCount);
+    dec(i)
+  end;
+  if (quietCount <> 0) then
+  begin
+    Exit(false);
+  end;
+
+  Result := true;
+
+end;
+
+initialization
+
+TITFReader.ClassInit();
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.OneDReader.pas

@@ -0,0 +1,499 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: dswitkin@google.com (Daniel Switkin) and Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.OneD.OneDReader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  Math,
+  ZXing.Reader,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultMetadataType,
+  ZXing.ResultPoint,
+  ZXing.Common.BitArray,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// Encapsulates functionality and implementation that is common to all families
+  /// of one-dimensional barcodes.
+  /// </summary>
+  TOneDReader = class(TInterfacedObject, IReader)
+  private
+    /// <summary>
+    /// We're going to examine rows from the middle outward, searching alternately above and below the
+    /// middle, and farther out each time. rowStep is the number of rows between each successive
+    /// attempt above and below the middle. So we'd scan row middle, then middle - rowStep, then
+    /// middle + rowStep, then middle - (2 * rowStep), etc.
+    /// rowStep is bigger as the image is taller, but is always at least 1. We've somewhat arbitrarily
+    /// decided that moving up and down by about 1/16 of the image is pretty good; we try more of the
+    /// image if "trying harder".
+    /// </summary>
+    /// <param name="image">The image to decode</param>
+    /// <param name="hints">Any hints that were requested</param>
+    /// <returns>The contents of the decoded barcode</returns>
+    function doDecode(const image: TBinaryBitmap;
+      hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+    class procedure InitializeClass; static;
+  protected
+    class var INTEGER_MATH_SHIFT: Integer;
+    class var PATTERN_MATCH_RESULT_SCALE_FACTOR: Integer;
+
+    /// <summary>
+    /// Determines how closely a set of observed counts of runs of black/white values matches a given
+    /// target pattern. This is reported as the ratio of the total variance from the expected pattern
+    /// proportions across all pattern elements, to the length of the pattern.
+    /// </summary>
+    /// <param name="counters">observed counters</param>
+    /// <param name="pattern">expected pattern</param>
+    /// <param name="maxIndividualVariance">The most any counter can differ before we give up</param>
+    /// <returns>ratio of total variance between counters and pattern compared to total pattern size,
+    /// where the ratio has been multiplied by 256. So, 0 means no variance (perfect match); 256 means
+    /// the total variance between counters and patterns equals the pattern length, higher values mean
+    /// even more variance</returns>
+    class function patternMatchVariance(counters, pattern: TArray<Integer>;
+      maxIndividualVariance: Integer): Integer; static;
+
+    /// <summary>
+    /// Records the pattern in reverse.
+    /// </summary>
+    /// <param name="row">The row.</param>
+    /// <param name="start">The start.</param>
+    /// <param name="counters">The counters.</param>
+    /// <returns></returns>
+    class function RecordPatternInReverse(row: IBitArray; start: Integer;
+      counters: TArray<Integer>): Boolean; Static;
+
+    /// <summary>
+    /// Records the size of successive runs of white and black pixels in a row, starting at a given point.
+    /// The values are recorded in the given array, and the number of runs recorded is equal to the size
+    /// of the array. If the row starts on a white pixel at the given start point, then the first count
+    /// recorded is the run of white pixels starting from that point; likewise it is the count of a run
+    /// of black pixels if the row begin on a black pixels at that point.
+    /// </summary>
+    /// <param name="row">row to count from</param>
+    /// <param name="start">offset into row to start at</param>
+    /// <param name="counters">array into which to record counts</param>
+    class function recordPattern(row: IBitArray; start: Integer;
+      counters: TArray<Integer>; numCounters: Integer): Boolean;
+      overload; static;
+  public
+    /// <summary>
+    /// Resets any internal state the implementation has after a decode, to prepare it
+    /// for reuse.
+    /// </summary>
+    procedure reset(); virtual;
+    /// <summary>
+    /// Locates and decodes a barcode in some format within an image.
+    /// </summary>
+    /// <param name="image">image of barcode to decode</param>
+    /// <returns>
+    /// String which the barcode encodes
+    /// </returns>
+    function decode(const image: TBinaryBitmap): TReadResult; overload;
+    /// <summary>
+    /// Locates and decodes a barcode in some format within an image. This method also accepts
+    /// hints, each possibly associated to some data, which may help the implementation decode.
+    /// Note that we don't try rotation without the try harder flag, even if rotation was supported.
+    /// </summary>
+    /// <param name="image">image of barcode to decode</param>
+    /// <param name="hints">passed as a <see cref="IDictionary{TKey, TValue}"/> from <see cref="DecodeHintType"/>
+    /// to arbitrary data. The
+    /// meaning of the data depends upon the hint type. The implementation may or may not do
+    /// anything with these hints.</param>
+    /// <returns>
+    /// String which the barcode encodes
+    /// </returns>
+    function decode(const image: TBinaryBitmap;
+      hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      overload; virtual;
+
+    /// <summary>
+    /// Records the size of successive runs of white and black pixels in a row, starting at a given point.
+    /// The values are recorded in the given array, and the number of runs recorded is equal to the size
+    /// of the array. If the row starts on a white pixel at the given start point, then the first count
+    /// recorded is the run of white pixels starting from that point; likewise it is the count of a run
+    /// of black pixels if the row begin on a black pixels at that point.
+    /// </summary>
+    /// <param name="row">row to count from</param>
+    /// <param name="start">offset into row to start at</param>
+    /// <param name="counters">array into which to record counts</param>
+    class function recordPattern(row: IBitArray; start: Integer;
+      counters: TArray<Integer>): Boolean; overload; static;
+
+    /// <summary>
+    /// Attempts to decode a one-dimensional barcode format given a single row of
+    /// an image.
+    /// </summary>
+    /// <param name="rowNumber">row number from top of the row</param>
+    /// <param name="row">the black/white pixel data of the row</param>
+    /// <param name="hints">decode hints</param>
+    /// <returns>
+    /// <see cref="Result"/>containing encoded string and start/end of barcode
+    /// </returns>
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      virtual; abstract;
+  end;
+
+implementation
+
+{ TOneDReader }
+
+function TOneDReader.decode(const image: TBinaryBitmap): TReadResult;
+begin
+  Result := decode(image, nil);
+end;
+
+class procedure TOneDReader.InitializeClass();
+begin
+  INTEGER_MATH_SHIFT := 8;
+  PATTERN_MATCH_RESULT_SCALE_FACTOR := (1 shl INTEGER_MATH_SHIFT);
+end;
+
+function TOneDReader.decode(const image: TBinaryBitmap;
+  hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  tryHarder, tryHarderWithoutRotation: Boolean;
+  rotatedImage: TBinaryBitmap;
+  metadata: TResultMetadata;
+  orientation, height, i, l: Integer;
+  points: TArray<IResultPoint>;
+
+begin
+  Result := doDecode(image, hints);
+  if (Result = nil) then
+  begin
+    Exit;
+  end;
+
+  tryHarder := (hints <> nil) and
+    (hints.ContainsKey(ZXing.DecodeHintType.TRY_HARDER));
+
+  tryHarderWithoutRotation := (hints <> nil) and
+    (hints.ContainsKey(ZXing.DecodeHintType.TRY_HARDER_WITHOUT_ROTATION));
+
+  if (tryHarder and ((not tryHarderWithoutRotation) and image.RotateSupported))
+  then
+  begin
+    rotatedImage := image.rotateCounterClockwise();
+    Result := doDecode(rotatedImage, hints);
+    if (Result = nil) then
+    begin
+      Exit;
+    end;
+
+    // Record that we found it rotated 90 degrees CCW / 270 degrees CW
+    metadata := Result.ResultMetadata;
+    orientation := 270;
+    if ((metadata <> nil) and metadata.ContainsKey
+      (ZXing.ResultMetadataType.orientation)) then
+    begin
+      // But if we found it reversed in doDecode(), add in that result here:
+      orientation :=
+        (orientation + (metadata[ZXing.ResultMetadataType.orientation]
+        as IIntegerMetadata).Value) mod 360;
+    end;
+
+    Result.putMetadata(ZXing.ResultMetadataType.orientation,
+      TResultMetadata.CreateIntegerMetadata(orientation));
+    // Update result points
+    points := Result.ResultPoints;
+    if (points <> nil) then
+    begin
+      height := rotatedImage.height;
+      l := Length(points) - 1;
+      for i := 0 to l do
+      begin
+        points[i] := TResultPointHelpers.CreateResultPoint
+          (height - points[i].Y - 1, points[i].X);
+      end;
+    end;
+
+  end;
+
+end;
+
+function TOneDReader.doDecode(const image: TBinaryBitmap;
+  hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+
+var
+  attempt, X, rowNumber, rowStepsAboveOrBelow, width, height, middle, rowStep,
+    maxLines: Integer;
+  row: IBitArray;
+  isAbove, hadResultPointCallBack: Boolean;
+  ReadResult: TReadResult;
+  points: TArray<IResultPoint>;
+  obj: TObject;
+  needsCallBack : boolean;
+begin
+  needsCallBack := (hints <> nil) and (hints.ContainsKey(ZXing.DecodeHintType.NEED_RESULT_POINT_CALLBACK));
+  width := image.width;
+  height := image.height;
+  row := TBitArrayHelpers.CreateBitArray(width);
+  // row is a interfaced object: we don't need to free it explicitly
+
+  middle := TMathUtils.Asr(height, 1);
+
+  	rowStep := 5;
+  maxLines := height; // Look at the whole image, not just the center
+
+  for X := 0 to maxLines - 1 do
+  begin
+    // Scanning from the middle out. Determine which row we're looking at next:
+    rowStepsAboveOrBelow := TMathUtils.Asr((X + 1), 1);
+    isAbove := (X and $01) = 0; // i.e. is x even?
+
+    if (not isAbove) then
+    begin
+      rowStepsAboveOrBelow := rowStepsAboveOrBelow * -1;
+    end;
+    rowNumber := middle + rowStep * rowStepsAboveOrBelow;
+
+    if ((rowNumber < 0) or (rowNumber >= height)) then
+    begin
+      // Oops, if we run off the top or bottom, stop
+      break;
+    end;
+
+    // Estimate black point for this row and load it:
+    row := image.getBlackRow(rowNumber, row);
+    if (row = nil) then
+    begin
+      continue;
+    end;
+
+    // While we have the image data in a BitArray, it's fairly cheap to reverse it in place to
+    // handle decoding upside down barcodes.
+    // for attempt := 0 to (attempt < 2) do
+    for attempt := 0 to 1 do
+    begin
+
+      hadResultPointCallBack := false;
+      if (attempt = 1) then
+      begin
+        // trying again?
+        row.Reverse();
+
+
+        // This means we will only ever draw result points *once* in the life of this method
+        // since we want to avoid drawing the wrong points after flipping the row, and,
+        // don't want to clutter with noise from every single row scan -- just the scans
+        // that start on the center line.
+
+        if needsCallBack then
+        begin
+          hints.TryGetValue
+            (ZXing.DecodeHintType.NEED_RESULT_POINT_CALLBACK, obj);
+          hints.Remove(ZXing.DecodeHintType.NEED_RESULT_POINT_CALLBACK);
+          hadResultPointCallBack := true;
+        end;
+
+      end;
+
+      // Look for a barcode
+      ReadResult := decodeRow(rowNumber, row, hints);
+      if hadResultPointCallBack then
+      begin
+        hints.Add(ZXing.DecodeHintType.NEED_RESULT_POINT_CALLBACK, obj);
+      end;
+
+      if (ReadResult = nil) then
+      begin
+        continue;
+      end;
+
+      // We found our barcode
+      if (attempt = 1) then
+      begin
+        // But it was upside down, so note that
+        // ReadResult.putMetadata(ResultMetadataType.orientation, TObject(180));
+        // And remember to flip the result points horizontally.
+        points := ReadResult.ResultPoints;
+        if (points <> nil) then
+        begin
+          points[0] := TResultPointHelpers.CreateResultPoint
+            (width - points[0].X - 1, points[0].Y);
+          points[1] := TResultPointHelpers.CreateResultPoint
+            (width - points[1].X - 1, points[1].Y);
+        end;
+
+      end;
+
+      Exit(ReadResult);
+
+    end; // loop
+
+  end;
+
+  Result := nil;
+end;
+
+class function TOneDReader.patternMatchVariance(counters,
+  pattern: TArray<Integer>; maxIndividualVariance: Integer): Integer;
+var
+  scaledPattern, variance, counter, totalVariance, X, unitBarWidth, i,
+    patternLength, numCounters, total: Integer;
+begin
+  Result := High(Integer);
+
+  numCounters := Length(counters);
+  total := 0;
+  patternLength := 0;
+  for i := 0 to numCounters - 1 do
+  begin
+    total := total + counters[i];
+    patternLength := patternLength + pattern[i];
+  end;
+
+  if (total < patternLength) then
+    // If we don't even have one pixel per unit of bar width, assume this is too small
+    // to reliably match, so fail:
+    Exit;
+
+  // We're going to fake floating-point math in integers. We just need to use more bits.
+  // Scale up patternLength so that intermediate values below like scaledCounter will have
+  // more "significant digits"
+  unitBarWidth := (total shl INTEGER_MATH_SHIFT) div patternLength;
+  maxIndividualVariance :=
+    TMathUtils.Asr((maxIndividualVariance * unitBarWidth), INTEGER_MATH_SHIFT);
+
+  totalVariance := 0;
+  for X := 0 to numCounters - 1 do
+  begin
+    counter := counters[X] shl INTEGER_MATH_SHIFT;
+    scaledPattern := pattern[X] * unitBarWidth;
+
+    if (counter > scaledPattern) then
+      variance := counter - scaledPattern
+    else
+      variance := scaledPattern - counter;
+
+    if (variance > maxIndividualVariance) then
+      Exit;
+
+    totalVariance := totalVariance + variance;
+  end;
+
+  Result := totalVariance div total;
+end;
+
+class function TOneDReader.recordPattern(row: IBitArray; start: Integer;
+  counters: TArray<Integer>): Boolean;
+begin
+  Result := recordPattern(row, start, counters, Length(counters));
+end;
+
+class function TOneDReader.recordPattern(row: IBitArray; start: Integer;
+  counters: TArray<Integer>; numCounters: Integer): Boolean;
+
+var
+  i, counterPosition, idx, ending: Integer;
+  isWhite: Boolean;
+
+begin
+  for idx := 0 to numCounters - 1 do
+  begin
+    counters[idx] := 0;
+  end;
+
+  ending := row.Size;
+
+  if (start >= ending) then
+  begin
+    Result := false;
+    Exit;
+  end;
+
+  isWhite := not row[start];
+  counterPosition := 0;
+  i := start;
+  while (i < ending) do
+  begin
+    if (row[i] xor isWhite) then
+    begin // that is, exactly one is true
+      inc(counters[counterPosition]);
+    end
+    else
+    begin
+      inc(counterPosition);
+      if (counterPosition = numCounters) then
+      begin
+        break;
+      end
+      else
+      begin
+        counters[counterPosition] := 1;
+        isWhite := not isWhite;
+      end;
+    end;
+    inc(i);
+  end;
+
+  // If we read fully the last section of pixels and filled up our counters -- or filled
+  // the last counter but ran off the side of the image, OK. Otherwise, a problem.
+  Result := ((counterPosition = numCounters) or
+    ((counterPosition = (numCounters - 1)) and (i = ending)));
+
+end;
+
+class function TOneDReader.RecordPatternInReverse(row: IBitArray;
+  start: Integer; counters: TArray<Integer>): Boolean;
+
+var
+  numTransitionsLeft: Integer;
+  last: Boolean;
+
+begin
+  // This could be more efficient I guess
+  numTransitionsLeft := Length(counters);
+  last := row[start];
+  while ((start > 0) and (numTransitionsLeft >= 0)) do
+  begin
+    dec(start);
+    if (row[start] <> last) then
+    begin
+      dec(numTransitionsLeft);
+      last := not last;
+    end;
+  end;
+
+  if (numTransitionsLeft >= 0) then
+  begin
+    Result := false;
+    Exit;
+  end;
+  Result := recordPattern(row, start + 1, counters);
+end;
+
+procedure TOneDReader.reset;
+begin
+  // do nothing
+end;
+
+initialization
+
+TOneDReader.InitializeClass();
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.UPCAReader.pas

@@ -0,0 +1,140 @@
+unit ZXing.OneD.UPCAReader;
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen
+  * Delphi Implementation by E. Spelt
+}
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  Math,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat,
+  ZXing.Helpers,
+  ZXing.OneD.EAN13Reader,
+  ZXing.OneD.UPCEANReader;
+
+type
+
+  TUPCAReader = class(TUPCEANReader)
+  private
+    class var EAN13Reader: TUPCEANReader;
+    class function maybeReturnResult(pResult: TReadResult): TReadResult; static;
+    class procedure DoInitialize();
+    class procedure DoFinalize();
+  protected
+
+  public
+    class function DecodeMiddle(const row: IBitArray;
+      const startRange: TArray<Integer>; const resultString: TStringBuilder)
+      : Integer; override;
+
+    function decode(const image: TBinaryBitmap;
+      hints: TDictionary<TDecodeHintType, TObject>): TReadResult; override;
+
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      overload; override;
+
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const startGuardRange: TArray<Integer>;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      reintroduce; overload;
+
+    function BarcodeFormat: TBarcodeFormat; override;
+  end;
+
+implementation
+
+{ TUPCAReader }
+
+class procedure TUPCAReader.DoFinalize;
+begin
+  EAN13Reader.Free;
+end;
+
+class procedure TUPCAReader.DoInitialize;
+begin
+  EAN13Reader := TEAN13Reader.Create();
+end;
+
+function TUPCAReader.decode(const image: TBinaryBitmap;
+  hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+begin
+  result := TUPCAReader.maybeReturnResult(self.EAN13Reader.decode(image, hints))
+end;
+
+class function TUPCAReader.DecodeMiddle(const row: IBitArray;
+  const startRange: TArray<Integer>;
+  const resultString: TStringBuilder): Integer;
+begin
+  result := self.EAN13Reader.DecodeMiddle(row, startRange, resultString)
+end;
+
+function TUPCAReader.decodeRow(const rowNumber: Integer; const row: IBitArray;
+  const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+begin
+  result := TUPCAReader.maybeReturnResult(self.EAN13Reader.decodeRow(rowNumber,
+    row, hints))
+end;
+
+function TUPCAReader.decodeRow(const rowNumber: Integer; const row: IBitArray;
+  const startGuardRange: TArray<Integer>;
+  const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+begin
+  result := TUPCAReader.maybeReturnResult
+    (self.EAN13Reader.doDecodeRow(rowNumber, row, startGuardRange, hints))
+end;
+
+function TUPCAReader.BarcodeFormat: TBarcodeFormat;
+begin
+  result := TBarcodeFormat.UPC_A;
+end;
+
+class function TUPCAReader.maybeReturnResult(pResult: TReadResult): TReadResult;
+begin
+  if not Assigned(pResult) then
+    Exit(nil);
+
+{$ZEROBASEDSTRINGS ON}
+  if (copy(pResult.text, 0, 1) = '0') then
+  begin
+    pResult.text := copy(pResult.text, 2, length(pResult.text));
+    pResult.BarcodeFormat := TBarcodeFormat.UPC_A;
+  end;
+{$ZEROBASEDSTRINGS OFF}
+  result := pResult;
+
+end;
+
+initialization
+
+TUPCAReader.DoInitialize;
+
+finalization
+
+TUPCAReader.DoFinalize;
+
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.UPCEANExtension2Support.pas

@@ -0,0 +1,194 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.OneD.UPCEANExtension2Support;
+
+interface
+
+uses 
+  System.SysUtils, 
+  System.Generics.Collections, 
+  System.Math,
+  ZXing.Reader,
+  ZXing.BarcodeFormat,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultMetadataType,
+  ZXing.ResultPoint,
+  ZXing.Common.BitArray;
+
+type
+  /// <summary>
+  /// @see UPCEANExtension5Support
+  /// </summary>
+  TUPCEANExtension2Support = class sealed
+  private
+    class var
+      decodeMiddleCounters : TArray<Integer>;
+      decodeRowStringBuffer : TStringBuilder;
+
+    class procedure InitializeClass; static;
+    class procedure FinalizeClass; static;
+
+    class function decodeMiddle(const row: IBitArray;
+      const startRange: TArray<Integer>;
+      const resultString: TStringBuilder): Integer;
+
+    /// <summary>
+    /// Parses the extension string.
+    /// </summary>
+    /// <param name="raw">raw content of extension</param>
+    /// <returns>formatted interpretation of raw content as a {@link TMap} mapping
+    class function parseExtensionString(const raw: String): TResultMetadata; static;
+  public
+    class function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const extensionStartRange: TArray<Integer>): TReadResult;
+  end;
+
+implementation
+
+uses
+  ZXing.OneD.UPCEANReader;
+
+{ TUPCEANExtension2Support }
+
+class procedure TUPCEANExtension2Support.InitializeClass;
+begin
+  decodeMiddleCounters := TArray<Integer>.Create(0, 0, 0, 0);
+  decodeRowStringBuffer := TStringBuilder.Create;
+end;
+
+class procedure TUPCEANExtension2Support.FinalizeClass;
+begin
+  decodeMiddleCounters := nil;
+  decodeRowStringBuffer.Free;
+end;
+
+class function TUPCEANExtension2Support.decodeRow(const rowNumber: Integer;
+  const row: IBitArray; const extensionStartRange: TArray<Integer>): TReadResult;
+var
+  res : TStringBuilder;
+  ending : Integer;
+  resultString : String;
+  extensionResult : TReadResult;
+  extensionData : TResultMetadata;
+  resultPoints : TArray<IResultPoint>;
+begin
+  Result := nil;
+
+  res := decodeRowStringBuffer;
+  res.Length := 0;
+  ending := decodeMiddle(row, extensionStartRange, res);
+  if (ending < 0)
+  then
+     exit;
+
+  resultString := res.ToString;
+  extensionData := TUPCEANExtension2Support.parseExtensionString(resultString);
+
+  resultPoints := TArray<IResultPoint>.Create(
+    TResultPointHelpers.CreateResultPoint((extensionStartRange[0] + extensionStartRange[1]) div 2, rowNumber),
+    TResultPointHelpers.CreateResultPoint(ending, rowNumber));
+
+  extensionResult := TReadResult.Create(resultString, nil, resultPoints, TBarcodeFormat.UPC_EAN_EXTENSION);
+  if (extensionData <> nil)
+  then
+  begin
+     extensionResult.putAllMetadata(extensionData);
+     FreeAndNil(extensionData);
+  end;
+  Result := extensionResult;
+end;
+
+class function TUPCEANExtension2Support.decodeMiddle(const row: IBitArray;
+  const startRange: TArray<Integer>; const resultString: TStringBuilder): Integer;
+var
+  bestMatch: Integer;
+  counter: Integer;
+  ending: Integer;
+  counters : TArray<Integer>;
+  rowOffset, x,
+  checkParity: Integer;
+begin
+  Result := -1;
+
+  counters := decodeMiddleCounters;
+  counters[0] := 0;
+  counters[1] := 0;
+  counters[2] := 0;
+  counters[3] := 0;
+  ending := row.Size;
+  rowOffset := startRange[1];
+  checkParity := 0;
+  x := 0;
+  while ((x < 2) and (rowOffset < ending)) do
+  begin
+    if (not TUPCEANReader.decodeDigit(row, counters, rowOffset, TUPCEANReader.L_AND_G_PATTERNS, bestMatch))
+    then
+       exit;
+
+    resultString.Append(IntToStr(bestMatch mod 10));
+
+    for counter in counters do
+      Inc(rowOffset, counter);
+
+    if (bestMatch >= 10)
+    then
+       checkParity := checkParity or (1 shl (1 - x));
+
+    if (x <> 1) then
+    begin
+      // Read off separator if not last
+      rowOffset := row.getNextSet(rowOffset);
+      rowOffset := row.getNextUnset(rowOffset);
+    end;
+    Inc(x);
+  end;
+
+  if (resultString.Length <> 2)
+  then
+     exit;
+
+  if ((Integer.Parse(resultString.ToString) mod 4) <> checkParity)
+  then
+     exit;
+
+  Result := rowOffset;
+end;
+
+class function TUPCEANExtension2Support.parseExtensionString(const raw: String): TResultMetadata;
+var
+  dictionary1: TResultMetadata;
+begin
+  Result := nil;
+
+  if (Length(raw) <> 2)
+  then
+     exit;
+
+  dictionary1 := TResultMetadata.Create;
+  dictionary1.Add(ZXing.ResultMetadataType.ISSUE_NUMBER, TResultMetaData.CreateStringMetadata(raw));
+  Result := dictionary1;
+end;
+
+initialization
+  TUPCEANExtension2Support.InitializeClass;
+finalization
+  TUPCEANExtension2Support.FinalizeClass;
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.UPCEANExtension5Support.pas

@@ -0,0 +1,311 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.OneD.UPCEANExtension5Support;
+
+interface
+
+uses 
+  System.SysUtils, 
+  System.Generics.Collections, 
+  System.Math,
+  ZXing.Reader,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.BarcodeFormat,
+  ZXing.DecodeHintType,
+  ZXing.ResultMetadataType,
+  ZXing.ResultPoint,
+  ZXing.Common.BitArray,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  (**
+   * @see TUPCEANExtension2Support
+   *)
+  TUPCEANExtension5Support = class sealed
+  private
+    class var
+      CHECK_DIGIT_ENCODINGS : TArray<Integer>;
+      decodeMiddleCounters : TArray<Integer>;
+      decodeRowStringBuffer : TStringBuilder;
+
+    class procedure InitializeClass; static;
+    class procedure FinalizeClass; static;
+
+    class function decodeMiddle(const row: IBitArray;
+      const startRange: TArray<Integer>;
+      const resultString: TStringBuilder): Integer;
+
+    class function extensionChecksum(const s: string): Integer; static;
+
+    class function determineCheckDigit(const lgPatternFound: Integer;
+      var checkDigit: Integer): Boolean; static;
+
+    /// <summary>
+    /// Parses the extension string.
+    /// </summary>
+    /// <param name="raw">raw content of extension</param>
+    /// <returns>formatted interpretation of raw content as a {@link TMap} mapping
+    /// one {@link TResultMetadataType} to appropriate value, or {@code nil} if not known</returns>
+    class function parseExtensionString(
+      const raw: string): TResultMetadata; static;
+
+    class function parseExtension5String(const raw: String): String; static;
+  public
+    class function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const extensionStartRange: TArray<Integer>): TReadResult;
+  end;
+
+implementation
+
+uses
+  ZXing.OneD.UPCEANReader;
+
+{ TUPCEANExtension2Support }
+
+class procedure TUPCEANExtension5Support.InitializeClass;
+begin
+  CHECK_DIGIT_ENCODINGS := TArray<Integer>.Create($18, $14, $12, $11, $0C,
+                                                  $06, $03, $0A, $09, $05);
+  decodeMiddleCounters := TArray<Integer>.Create(0, 0, 0, 0);
+  decodeRowStringBuffer := TStringBuilder.Create;
+end;
+
+class procedure TUPCEANExtension5Support.FinalizeClass;
+begin
+  CHECK_DIGIT_ENCODINGS := nil;
+  decodeMiddleCounters := nil;
+  decodeRowStringBuffer.Free;
+end;
+
+class function TUPCEANExtension5Support.decodeRow(const rowNumber: Integer;
+  const row: IBitArray; const extensionStartRange: TArray<Integer>): TReadResult;
+var
+  res : TStringBuilder;
+  ending : Integer;
+  resultString : String;
+  extensionData : TResultMetadata;
+  resultPoints : TArray<IResultPoint>;
+  extensionResult : TReadResult;
+begin
+  Result := nil;
+
+  res := decodeRowStringBuffer;
+  res.Length := 0;
+  ending := decodeMiddle(row, extensionStartRange, res);
+  if (ending < 0)
+  then
+     exit;
+
+  resultString := res.ToString;
+  extensionData := parseExtensionString(resultString);
+  resultPoints := TArray<IResultPoint>.Create(
+    TResultPointHelpers.CreateResultPoint((extensionStartRange[0] + extensionStartRange[1]) div 2, rowNumber),
+    TResultPointHelpers.CreateResultPoint(ending, rowNumber));
+
+  extensionResult := TReadResult.Create(resultString, nil, resultPoints, TBarcodeFormat.UPC_EAN_EXTENSION);
+  if (extensionData <> nil)
+  then
+  begin
+     extensionResult.putAllMetadata(extensionData);
+     FreeAndNil(extensionData);
+  end;
+  Result := extensionResult;
+end;
+
+class function TUPCEANExtension5Support.decodeMiddle(const row: IBitArray;
+  const startRange: TArray<Integer>; const resultString: TStringBuilder): Integer;
+var
+  bestMatch: Integer;
+  counter: Integer;
+  ending: Integer;
+  counters : TArray<Integer>;
+  rowOffset, x,
+  lgPatternFound,
+  checkDigit : Integer;
+begin
+  Result := -1;
+
+  counters := decodeMiddleCounters;
+  counters[0] := 0;
+  counters[1] := 0;
+  counters[2] := 0;
+  counters[3] := 0;
+  ending := row.Size;
+  rowOffset := startRange[1];
+
+  lgPatternFound := 0;
+
+  x := 0;
+  while (((x < 5) and (rowOffset < ending))) do
+  begin
+    if (not TUPCEANReader.decodeDigit(row, counters, rowOffset, TUPCEANReader.L_AND_G_PATTERNS, bestMatch))
+    then
+       exit;
+
+    resultString.Append(IntToStr(bestMatch mod 10));
+
+    for counter in counters do
+      Inc(rowOffset, counter);
+
+    if (bestMatch >= 10)
+    then
+       lgPatternFound := lgPatternFound or (1 shl (4 - x));
+
+    if (x <> 4) then
+    begin
+      // Read off separator if not last
+      rowOffset := row.getNextSet(rowOffset);
+      rowOffset := row.getNextUnset(rowOffset)
+    end;
+    Inc(x);
+  end;
+
+  if (resultString.Length <> 5)
+  then
+     exit;
+
+  if (not determineCheckDigit(lgPatternFound, checkDigit))
+  then
+     exit;
+
+  if (extensionChecksum(resultString.ToString) <> checkDigit)
+  then
+     exit;
+
+  Result := rowOffset;
+end;
+
+class function TUPCEANExtension5Support.extensionChecksum(
+  const s: String): Integer;
+var
+  len,
+  sum, i : Integer;
+begin
+  len := Length(s);
+  sum := 0;
+  i := (len - 2);
+  while ((i >= 0)) do
+  begin
+    Inc(sum, StrToIntDef(s.Chars[i], 0));
+    Dec(i, 2);
+  end;
+  sum := (sum * 3);
+  i := (len - 1);
+  while ((i >= 0)) do
+  begin
+    Inc(sum, StrToIntDef(s.Chars[i], 0));
+    Dec(i, 2);
+  end;
+  sum := (sum * 3);
+
+  Result := (sum mod 10);
+end;
+
+class function TUPCEANExtension5Support.determineCheckDigit(
+  const lgPatternFound: Integer; var checkDigit: Integer): Boolean;
+var
+  i: Integer;
+begin
+  Result := false;
+
+  for i := 0 to Pred(10) do
+  begin
+    if (lgPatternFound = CHECK_DIGIT_ENCODINGS[i]) then
+    begin
+      Result := true;
+      checkDigit := i;
+      break;
+    end;
+  end;
+end;
+
+class function TUPCEANExtension5Support.parseExtensionString(
+  const raw: String): TResultMetadata;
+var
+  value: String;
+  dictionary1: TResultMetadata;
+begin
+  Result := nil;
+  if (Length(raw) <> 5)
+  then
+     exit;
+
+  value := TUPCEANExtension5Support.parseExtension5String(raw);
+//
+//  if (Length(value) = 0)
+//  then
+//     Result := nil;
+
+  dictionary1 := TResultMetadata.Create();
+  dictionary1.Add(ZXing.ResultMetadataType.SUGGESTED_PRICE, TResultMetadata.CreateStringMetadata(value));
+
+  Result := dictionary1;
+end;
+
+class function TUPCEANExtension5Support.parseExtension5String(
+  const raw: String): String;
+var
+  currency,
+  unitsString,
+  hundredthsString : string;
+  rawAmount,
+  hundredths : Integer;
+begin
+  Result := '';
+
+  case raw[1] of
+    '0' : currency := '£';
+    '5' : currency := '$';
+    '9' : begin
+            // Reference: http://www.jollytech.com
+            if ('90000'.Equals(raw))
+            then
+               // No suggested retail price
+               exit;
+            if ('99991'.Equals(raw))
+            then
+               // Complementary
+               Result := '0.00';
+            if ('99990'.Equals(raw))
+            then
+               Result := 'Used';
+            // Otherwise... unknown currency?
+            currency := '';
+          end;
+    else currency := '';
+  end;
+
+  rawAmount := Integer.Parse(raw.Substring(1));
+  unitsString := ((rawAmount div 100)).ToString;
+  hundredths := (rawAmount mod 100);
+  if (hundredths < 10)
+  then
+     hundredthsString := '0' + hundredths.ToString
+  else
+     hundredthsString := hundredths.ToString;
+
+  Result := currency + unitsString + '.' + hundredthsString;
+end;
+
+initialization
+  TUPCEANExtension5Support.InitializeClass;
+finalization
+  TUPCEANExtension5Support.FinalizeClass;
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.UPCEANExtensionSupport.pas

@@ -0,0 +1,99 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.OneD.UPCEANExtensionSupport;
+
+interface
+
+uses 
+  System.SysUtils, 
+  System.Generics.Collections,
+  System.Math,
+  ZXing.OneD.UPCEANExtension2Support,
+  ZXing.OneD.UPCEANExtension5Support,
+  ZXing.Reader,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultMetadataType,
+  ZXing.ResultPoint,
+  ZXing.Common.BitArray,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  TUPCEANExtensionSupport = class sealed
+  private
+    class var
+      EXTENSION_START_PATTERN : TArray<Integer>;
+
+      twoSupport : TUPCEANExtension2Support;
+      fiveSupport : TUPCEANExtension5Support;
+
+    class procedure InitializeClass; static;
+    class procedure FinalizeClass; static;
+  public
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const rowOffset: Integer): TReadResult;
+  end;
+
+implementation
+
+uses
+  ZXing.OneD.UPCEANReader;
+
+{ TUPCEANExtensionSupport }
+
+class procedure TUPCEANExtensionSupport.InitializeClass();
+begin
+  EXTENSION_START_PATTERN := TArray<Integer>.Create(1, 1, 2);
+  twoSupport := TUPCEANExtension2Support.Create();
+  fiveSupport := TUPCEANExtension5Support.Create();
+end;
+
+class procedure TUPCEANExtensionSupport.FinalizeClass();
+begin
+  EXTENSION_START_PATTERN := nil;
+  twoSupport.Free;
+  fiveSupport.Free;
+end;
+
+function TUPCEANExtensionSupport.decodeRow(const rowNumber: Integer;
+  const row: IBitArray; const rowOffset: Integer): TReadResult;
+var
+  extensionStartRange: TArray<Integer>;
+  res : TReadResult;
+begin
+  Result := nil;
+
+  extensionStartRange := TUPCEANReader.findGuardPattern(row, rowOffset,
+    false, EXTENSION_START_PATTERN);
+  if (extensionStartRange = nil)
+  then
+     exit;
+  res := fiveSupport.decodeRow(rowNumber, row, extensionStartRange);
+  if (res = nil)
+  then
+     res := twoSupport.decodeRow(rowNumber, row, extensionStartRange);
+  Result := res;
+end;
+
+initialization
+  TUPCEANExtensionSupport.InitializeClass;
+finalization
+  TUPCEANExtensionSupport.FinalizeClass;
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.UPCEANReader.pas

@@ -0,0 +1,592 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: dswitkin@google.com (Daniel Switkin), Sean Owen and
+  *                   alasdair@google.com (Alasdair Mackintosh)
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.OneD.UPCEANReader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  System.Math,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.OneD.UPCEANExtensionSupport,
+  ZXing.OneD.EANManufacturerOrgSupport,
+  ZXing.ResultMetadataType,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat;
+
+type
+  /// <summary>
+  /// <p>Encapsulates functionality and implementation that is common to UPC and EAN families
+  /// of one-dimensional barcodes.</p>
+  /// </summary>
+  TUPCEANReader = class abstract(TOneDReader)
+  private
+    decodeRowStringBuffer: TStringBuilder;
+    extensionReader: TUPCEANExtensionSupport;
+    eanManSupport: TEANManufacturerOrgSupport;
+
+    /// <summary>
+    /// </summary>
+    /// <param name="row">row of black/white values to search</param>
+    /// <param name="rowOffset">position to start search</param>
+    /// <param name="whiteFirst">if true, indicates that the pattern specifies white/black/white/...</param>
+    /// pixel counts, otherwise, it is interpreted as black/white/black/...
+    /// <param name="pattern">pattern of counts of number of black and white pixels that are being</param>
+    /// searched for as a pattern
+    /// <param name="counters">array of counters, as long as pattern, to re-use</param>
+    /// <returns>start/end horizontal offset of guard pattern, as an array of two ints</returns>
+    class function findGuardPattern(const row: IBitArray; rowOffset: Integer;
+      const whiteFirst: Boolean; const pattern: TArray<Integer>;
+      counters: TArray<Integer>): TArray<Integer>; overload;
+
+    /// <summary>
+    /// Computes the UPC/EAN checksum on a string of digits, and reports
+    /// whether the checksum is correct or not.
+    /// </summary>
+    /// <param name="s">string of digits to check</param>
+    /// <returns>true iff string of digits passes the UPC/EAN checksum algorithm</returns>
+    class function checkStandardUPCEANChecksum(const s: String)
+      : Boolean; static;
+
+    class procedure InitializeClass; static;
+    class procedure FinalizeClass; static;
+  protected
+  class var
+    // These two values are critical for determining how permissive the decoding will be.
+    // We've arrived at these values through a lot of trial and error. Setting them any higher
+    // lets false positives creep in quickly.
+    MAX_AVG_VARIANCE: Integer;
+    MAX_INDIVIDUAL_VARIANCE: Integer;
+
+    /// <summary>
+    /// Start/end guard pattern.
+    /// </summary>
+    START_END_PATTERN: TArray<Integer>;
+
+    /// <summary>
+    /// Pattern marking the middle of a UPC/EAN pattern, separating the two halves.
+    /// </summary>
+    MIDDLE_PATTERN: TArray<Integer>;
+
+    /// <summary>
+    /// "Odd", or "L" patterns used to encode UPC/EAN digits.
+    /// </summary>
+    L_PATTERNS: TArray<TArray<Integer>>;
+
+    /// <summary>
+    /// Decodes the end.
+    /// </summary>
+    /// <param name="row">The row.</param>
+    /// <param name="endStart">The end start.</param>
+    /// <returns></returns>
+    class function decodeEnd(const row: IBitArray; const endStart: Integer)
+      : TArray<Integer>; virtual;
+
+    /// <summary>
+    /// </summary>
+    /// <param name="s">string of digits to check</param>
+    /// <returns>see <see cref="checkStandardUPCEANChecksum(String)"/></returns>
+    class function checkChecksum(const s: String): Boolean; virtual;
+  public
+    class var
+    /// <summary>
+    /// As above but also including the "even", or "G" patterns used to encode UPC/EAN digits.
+    /// </summary>
+      L_AND_G_PATTERNS: TArray<TArray<Integer>>;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TUPCEANReader"/> class.
+    /// </summary>
+    constructor Create; virtual;
+    destructor Destroy; override;
+
+    /// <summary>
+    /// Subclasses override this to decode the portion of a barcode between the start
+    /// and end guard patterns.
+    /// </summary>
+    /// <param name="row">row of black/white values to search</param>
+    /// <param name="startRange">start/end offset of start guard pattern</param>
+    /// <param name="resultString"><see cref="StringBuilder" />to append decoded chars to</param>
+    /// <returns>horizontal offset of first pixel after the "middle" that was decoded or -1 if decoding could not complete successfully</returns>
+    class function DecodeMiddle(const row: IBitArray;
+      const startRange: TArray<Integer>; const resultString: TStringBuilder)
+      : Integer; virtual; abstract;
+
+    /// <summary>
+    /// Get the format of this decoder.
+    /// </summary>
+    /// <returns>The 1D format.</returns>
+    function BarcodeFormat: TBarcodeFormat; virtual; abstract;
+
+    class function findStartGuardPattern(const row: IBitArray)
+      : TArray<Integer>; static;
+
+    class function findGuardPattern(const row: IBitArray;
+      const rowOffset: Integer; const whiteFirst: Boolean;
+      const pattern: TArray<Integer>): TArray<Integer>; overload;
+
+    /// <summary>
+    /// Attempts to decode a single UPC/EAN-encoded digit.
+    /// </summary>
+    /// <param name="row">row of black/white values to decode</param>
+    /// <param name="counters">the counts of runs of observed black/white/black/... values</param>
+    /// <param name="rowOffset">horizontal offset to start decoding from</param>
+    /// <param name="patterns">the set of patterns to use to decode -- sometimes different encodings</param>
+    /// for the digits 0-9 are used, and this indicates the encodings for 0 to 9 that should
+    /// be used
+    /// <returns>horizontal offset of first pixel beyond the decoded digit</returns>
+    class function decodeDigit(const row: IBitArray;
+      const counters: TArray<Integer>; const rowOffset: Integer;
+      const patterns: TArray<TArray<Integer>>; var digit: Integer): Boolean;
+
+    /// <summary>
+    /// <p>Attempts to decode a one-dimensional barcode format given a single row of
+    /// an image.</p>
+    /// </summary>
+    /// <param name="rowNumber">row number from top of the row</param>
+    /// <param name="row">the black/white pixel data of the row</param>
+    /// <param name="hints">decode hints</param>
+    /// <returns>
+    /// <see cref="TReadResult"/>containing encoded string and start/end of barcode or null, if an error occurs or barcode cannot be found
+    /// </returns>
+    function decodeRow(const rowNumber: Integer; const row: IBitArray;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+      overload; override;
+
+    /// <summary>
+    /// <p>Like decodeRow(int, BitArray, java.util.Map), but
+    /// allows caller to inform method about where the UPC/EAN start pattern is
+    /// found. This allows this to be computed once and reused across many implementations.</p>
+    /// </summary>
+    /// <param name="rowNumber">row index into the image</param>
+    /// <param name="row">encoding of the row of the barcode image</param>
+    /// <param name="startGuardRange">start/end column where the opening start pattern was found</param>
+    /// <param name="hints">optional hints that influence decoding</param>
+    /// <returns><see cref="TReadResult"/> encapsulating the result of decoding a barcode in the row</returns>
+    function DoDecodeRow(const rowNumber: Integer; const row: IBitArray;
+      const startGuardRange: TArray<Integer>;
+      const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+
+  end;
+
+implementation
+
+{ TUPCEANReader }
+
+constructor TUPCEANReader.Create;
+begin
+  inherited;
+
+  decodeRowStringBuffer := TStringBuilder.Create(20);
+  extensionReader := TUPCEANExtensionSupport.Create;
+  eanManSupport := TEANManufacturerOrgSupport.Create;
+end;
+
+destructor TUPCEANReader.Destroy;
+begin
+  eanManSupport.Free;
+  extensionReader.Free;
+  decodeRowStringBuffer.Free;
+  inherited;
+end;
+
+class procedure TUPCEANReader.InitializeClass;
+var
+  i, j: Integer;
+  widths, reversedWidths: TArray<Integer>;
+begin
+  MAX_AVG_VARIANCE :=
+    Trunc(TOneDReader.PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.48);
+  MAX_INDIVIDUAL_VARIANCE :=
+    Trunc(TOneDReader.PATTERN_MATCH_RESULT_SCALE_FACTOR * 0.7);
+
+  START_END_PATTERN := TArray<Integer>.Create(1, 1, 1);
+  MIDDLE_PATTERN := TArray<Integer>.Create(1, 1, 1, 1, 1);
+
+  L_PATTERNS := TArray < TArray < Integer >>
+    .Create(TArray<Integer>.Create(3, 2, 1, 1), // 0
+    TArray<Integer>.Create(2, 2, 2, 1), // 1
+    TArray<Integer>.Create(2, 1, 2, 2), // 2
+    TArray<Integer>.Create(1, 4, 1, 1), // 3
+    TArray<Integer>.Create(1, 1, 3, 2), // 4
+    TArray<Integer>.Create(1, 2, 3, 1), // 5
+    TArray<Integer>.Create(1, 1, 1, 4), // 6
+    TArray<Integer>.Create(1, 3, 1, 2), // 7
+    TArray<Integer>.Create(1, 2, 1, 3), // 8
+    TArray<Integer>.Create(3, 1, 1, 2) // 9
+    );
+
+  L_AND_G_PATTERNS := L_PATTERNS;
+  SetLength(L_AND_G_PATTERNS, 20);
+
+  // Move(L_PATTERNS[0], L_AND_G_PATTERNS[0], 10);
+  for i := 10 to Pred(20) do
+  begin
+    widths := L_PATTERNS[(i - 10)];
+    reversedWidths := TArray<Integer>.Create();
+    SetLength(reversedWidths, Length(widths));
+    for j := 0 to Pred(Length(widths)) do
+      reversedWidths[j] := widths[((Length(widths) - j) - 1)];
+    L_AND_G_PATTERNS[i] := reversedWidths;
+  end;
+end;
+
+class procedure TUPCEANReader.FinalizeClass;
+begin
+  START_END_PATTERN := nil;
+  MIDDLE_PATTERN := nil;
+  L_PATTERNS := nil;
+  L_AND_G_PATTERNS := nil;
+
+end;
+
+class function TUPCEANReader.checkChecksum(const s: String): Boolean;
+begin
+  Result := checkStandardUPCEANChecksum(s);
+end;
+
+class function TUPCEANReader.checkStandardUPCEANChecksum
+  (const s: String): Boolean;
+var
+  len, sum, i, digit, ZeroInt: Integer;
+begin
+{$ZEROBASEDSTRINGS ON}
+  Result := false;
+
+  len := Length(s);
+  if (len = 0) then
+    exit;
+
+  sum := 0;
+  ZeroInt := Ord('0');
+  i := (len - 2);
+  while ((i >= 0)) do
+  begin
+    digit := Ord(s[i]) - ZeroInt;
+    if ((digit < 0) or (digit > 9)) then
+      exit;
+    Inc(sum, digit);
+    Dec(i, 2);
+  end;
+  sum := (sum * 3);
+  i := (len - 1);
+  while ((i >= 0)) do
+  begin
+    digit := Ord(s[i]) - ZeroInt;
+    if ((digit < 0) or (digit > 9)) then
+      exit;
+    Inc(sum, digit);
+    Dec(i, 2);
+  end;
+
+{$ZEROBASEDSTRINGS OFF}
+  Result := ((sum mod 10) = 0);
+end;
+
+class function TUPCEANReader.decodeEnd(const row: IBitArray;
+  const endStart: Integer): TArray<Integer>;
+begin
+  Result := findGuardPattern(row, endStart, false, START_END_PATTERN);
+end;
+
+class function TUPCEANReader.findStartGuardPattern(const row: IBitArray)
+  : TArray<Integer>;
+var
+  foundStart: Boolean;
+  startRange, counters: TArray<Integer>;
+  nextStart, start, quietStart, idx, l: Integer;
+begin
+  Result := nil;
+
+  foundStart := false;
+  startRange := nil;
+  nextStart := 0;
+  counters := TArray<Integer>.Create();
+  l := Length(START_END_PATTERN);
+  SetLength(counters, l);
+  while (not foundStart) do
+  begin
+    for idx := 0 to l - 1 do
+      counters[idx] := 0;
+    startRange := findGuardPattern(row, nextStart, false, START_END_PATTERN,
+      counters);
+    if (startRange = nil) then
+      exit;
+    start := startRange[0];
+    nextStart := startRange[1];
+    // Make sure there is a quiet zone at least as big as the start pattern before the barcode.
+    // If this check would run off the left edge of the image, do not accept this barcode,
+    // as it is very likely to be a false positive.
+    quietStart := start - (nextStart - start);
+    if (quietStart >= 0) then
+      foundStart := row.isRange(quietStart, start, false);
+  end;
+
+  counters:=nil;
+  Result := startRange;
+end;
+
+class function TUPCEANReader.findGuardPattern(const row: IBitArray;
+  const rowOffset: Integer; const whiteFirst: Boolean;
+  const pattern: TArray<Integer>): TArray<Integer>;
+var
+  counters: TArray<Integer>;
+begin
+  counters := TArray<Integer>.Create();
+  SetLength(counters, Length(pattern));
+  Result := findGuardPattern(row, rowOffset, whiteFirst, pattern, counters);
+  counters:=nil;
+end;
+
+class function TUPCEANReader.findGuardPattern(const row: IBitArray;
+  rowOffset: Integer; const whiteFirst: Boolean; const pattern: TArray<Integer>;
+  counters: TArray<Integer>): TArray<Integer>;
+var
+  patternLength, width, x: Integer;
+  isWhite: Boolean;
+  counterPosition, patternStart: Integer;
+  curCounter: TArray<Integer>;
+begin
+  Result := nil;
+
+  patternLength := Length(pattern);
+  width := row.Size;
+  isWhite := whiteFirst;
+  if whiteFirst then
+    rowOffset := row.getNextUnset(rowOffset)
+  else
+    rowOffset := row.getNextSet(rowOffset);
+
+  counterPosition := 0;
+  patternStart := rowOffset;
+  for x := rowOffset to Pred(width) do
+  begin
+    if (row[x] xor isWhite) then
+      Inc(counters[counterPosition])
+    else
+    begin
+      if (counterPosition = (patternLength - 1)) then
+      begin
+        if (patternMatchVariance(counters, pattern, MAX_INDIVIDUAL_VARIANCE) <
+          MAX_AVG_VARIANCE) then
+        begin
+          Result := TArray<Integer>.Create(patternStart, x);
+          break;
+        end;
+        Inc(patternStart, (counters[0] + counters[1]));
+        curCounter := TArray<Integer>.Create();
+        SetLength(curCounter, Length(counters));
+        TArray.Copy<Integer>(counters, curCounter, 2, 0, (patternLength - 2));
+        { curCounter[patternLength - 2] := 0;
+          curCounter[patternLength - 1] := 0; }
+        counters := curCounter;
+        Dec(counterPosition);
+      end
+      else
+        Inc(counterPosition);
+      counters[counterPosition] := 1;
+      isWhite := not isWhite;
+    end;
+  end;
+end;
+
+class function TUPCEANReader.decodeDigit(const row: IBitArray;
+  const counters: TArray<Integer>; const rowOffset: Integer;
+  const patterns: TArray<TArray<Integer>>; var digit: Integer): Boolean;
+var
+  bestVariance, variance, i, max: Integer;
+  pattern: TArray<Integer>;
+begin
+  Result := false;
+
+  digit := -1;
+  if (not TOneDReader.recordPattern(row, rowOffset, counters)) then
+    exit;
+
+  bestVariance := TUPCEANReader.MAX_AVG_VARIANCE; // worst variance we'll accept
+  max := Length(patterns);
+  for i := 0 to Pred(max) do
+  begin
+    pattern := patterns[i];
+    variance := TOneDReader.patternMatchVariance(counters, pattern,
+      TUPCEANReader.MAX_INDIVIDUAL_VARIANCE);
+    if (variance < bestVariance) then
+    begin
+      bestVariance := variance;
+      digit := i;
+    end;
+  end;
+
+  Result := (digit >= 0);
+end;
+
+function TUPCEANReader.decodeRow(const rowNumber: Integer; const row: IBitArray;
+  const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  startRange: TArray<Integer>;
+begin
+  startRange := findStartGuardPattern(row);
+  if startRange = nil then
+    exit(nil);
+
+  try
+    Result := DoDecodeRow(rowNumber, row, startRange, hints);
+  except
+    result := nil;
+  end;
+
+end;
+
+function TUPCEANReader.DoDecodeRow(const rowNumber: Integer;
+  const row: IBitArray;
+
+  const startGuardRange: TArray<Integer>;
+  const hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  len: Integer;
+  res: TStringBuilder;
+  resultString: String;
+  endStart, ending, quietEnd: Integer;
+  endRange: TArray<Integer>;
+  resultPoints: TArray<IResultPoint>;
+  left, right: Single;
+  resultPointCallback: TResultPointCallback;
+  obj: TObject;
+  resPoint: IResultPoint;
+  decodeResult, extensionResult: TReadResult;
+  format: TBarcodeFormat;
+  allowedExtensions: TArray<Integer>;
+  valid: Boolean;
+  extensionLength: Integer;
+  countryID: String;
+begin
+  Result := nil;
+  resultPointCallback := nil;
+
+  if ((hints <> nil) and
+    (hints.ContainsKey(TDecodeHintType.NEED_RESULT_POINT_CALLBACK))) then
+  begin
+    obj := hints[TDecodeHintType.NEED_RESULT_POINT_CALLBACK];
+    if (obj is TResultPointEventObject) then
+      resultPointCallback := TResultPointEventObject(obj).Event;
+  end;
+
+  res := decodeRowStringBuffer;
+  res.Length := 0;
+  endStart := DecodeMiddle(row, startGuardRange, res);
+  if (endStart < 0) then
+    exit;
+
+  if Assigned(resultPointCallback) then
+  begin
+    resPoint := TResultPointHelpers.CreateResultPoint(endStart, rowNumber);
+    resultPointCallback(resPoint);
+  end;
+
+  endRange := decodeEnd(row, endStart);
+  if (endRange = nil) then
+    exit;
+
+  if Assigned(resultPointCallback) then
+  begin
+    resPoint := TResultPointHelpers.CreateResultPoint
+      ((endRange[0] + endRange[1]) div 2, rowNumber);
+    resultPointCallback(resPoint);
+  end;
+
+  ending := endRange[1];
+  quietEnd := (ending + (ending - endRange[0]));
+  if ((quietEnd >= row.Size) or not row.isRange(ending, quietEnd, false)) then
+    exit;
+
+  resultString := res.ToString;
+  if (Length(resultString) < 8) then
+    exit;
+  if (not checkChecksum(resultString)) then
+    exit;
+  left := ((startGuardRange[1] + startGuardRange[0]) div 2);
+  right := ((endRange[1] + endRange[0]) div 2);
+  format := BarcodeFormat;
+  resultPoints := TArray<IResultPoint>.Create
+    (TResultPointHelpers.CreateResultPoint(left, rowNumber),
+    TResultPointHelpers.CreateResultPoint(right, rowNumber));
+
+  decodeResult := TReadResult.Create(resultString, nil, resultPoints, format);
+  extensionResult := extensionReader.decodeRow(rowNumber, row, endRange[1]);
+  if (extensionResult <> nil) then
+  begin
+    decodeResult.putMetadata(TResultMetadataType.UPC_EAN_EXTENSION,
+      TResultMetaData.CreateStringMetadata(extensionResult.Text));
+    decodeResult.putAllMetadata(extensionResult.ResultMetadata);
+    decodeResult.addResultPoints(extensionResult.resultPoints);
+    extensionLength := Length(extensionResult.Text);
+    extensionResult.Free;
+
+    if (hints <> nil) and
+      (hints.ContainsKey(TDecodeHintType.ALLOWED_EAN_EXTENSIONS)) then
+      allowedExtensions := TArray<Integer>
+        (hints[TDecodeHintType.ALLOWED_EAN_EXTENSIONS])
+    else
+      allowedExtensions := nil;
+
+    if (allowedExtensions <> nil) then
+    begin
+      valid := false;
+
+      for len in allowedExtensions do
+      begin
+        if (extensionLength = len) then
+        begin
+          valid := true;
+          break;
+        end;
+      end;
+      if (not valid) then
+        exit;
+    end
+  end;
+
+  case format of
+    TBarcodeFormat.EAN_13, TBarcodeFormat.UPC_A:
+      begin
+        countryID := eanManSupport.lookupCountryIdentifier(resultString);
+        if (countryID <> '') then
+          decodeResult.putMetadata(TResultMetadataType.POSSIBLE_COUNTRY,
+            TResultMetaData.CreateStringMetadata(countryID));
+      end;
+  end;
+
+  Result := decodeResult;
+end;
+
+initialization
+
+TUPCEANReader.InitializeClass;
+
+finalization
+
+TUPCEANReader.FinalizeClass;
+
+end.

android-client/ThirdParty/ZXing/1D Barcodes/ZXing.OneD.UPCEReader.pas

@@ -0,0 +1,235 @@
+unit ZXing.OneD.UPCEReader;
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen
+  * Delphi Implementation by E. Spelt
+}
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  Math,
+  ZXing.OneD.OneDReader,
+  ZXing.Common.BitArray,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType,
+  ZXing.ResultPoint,
+  ZXing.BarcodeFormat,
+  ZXing.Helpers,
+  ZXing.OneD.EAN13Reader,
+  ZXing.OneD.UPCEANReader;
+
+type
+
+  T2DIntArray = TArray<TArray<Integer>>;
+
+  TUPCEReader = class(TUPCEANReader)
+  private
+    class var decodeMiddleCounters: TArray<Integer>;
+    class var MIDDLE_END_PATTERN: TArray<Integer>;
+    class var NUMSYS_AND_CHECK_DIGIT_PATTERNS: T2DIntArray;
+
+    class procedure DoInitialize();
+    class procedure DoFinalize();
+    class function determineNumSysAndCheckDigit(resultString: TStringBuilder;
+      lgPatternFound: Integer): boolean; static;
+
+  protected
+
+    class function checkChecksum(const s: string): boolean; override;
+    class function decodeEnd(const row: IBitArray; const endStart: Integer)
+      : TArray<Integer>; override;
+
+  public
+    class function DecodeMiddle(const row: IBitArray;
+      const startRange: TArray<Integer>; const res: TStringBuilder)
+      : Integer; override;
+
+  public
+    class function convertUPCEtoUPCA(upce: string): string; static;
+
+    function BarcodeFormat: TBarcodeFormat; override;
+  end;
+
+implementation
+
+{ TUPCEReader }
+
+class function TUPCEReader.determineNumSysAndCheckDigit
+  (resultString: TStringBuilder; lgPatternFound: Integer): boolean;
+var
+  numSys, d: Integer;
+begin
+  numSys := 0;
+  while ((numSys <= 1)) do
+  begin
+    d := 0;
+    while ((d < 10)) do
+    begin
+      if (lgPatternFound = TUPCEReader.NUMSYS_AND_CHECK_DIGIT_PATTERNS
+        [numSys][d]) then
+      begin
+        resultString.Insert(0, Char($30 + numSys) );
+        resultString.Append(char($30 + d));
+        begin
+          Result := true;
+          exit
+        end
+      end;
+      inc(d)
+    end;
+    inc(numSys)
+  end;
+
+  Result := false;
+end;
+
+class function TUPCEReader.checkChecksum(const s: string): boolean;
+begin
+  Result := inherited checkChecksum(TUPCEReader.convertUPCEtoUPCA(s))
+end;
+
+class function TUPCEReader.convertUPCEtoUPCA(upce: string): string;
+var
+  upceChars: string;
+  res: TStringBuilder;
+  lastChar: char;
+begin
+  upceChars := upce.Substring(1, 6);
+  res := TStringBuilder.Create(12);
+  res.Append(upce.Chars[0]);
+  lastChar := upceChars.Chars[5];
+  case lastChar of
+    '0', '1', '2':
+      begin
+        res.Append(upceChars, 0, 2);
+        res.Append(lastChar);
+        res.Append('0000');
+        res.Append(upceChars, 2, 3);
+      end;
+    '3':
+      begin
+        res.Append(upceChars, 0, 3);
+        res.Append('00000');
+        res.Append(upceChars, 3, 2);
+      end;
+    '4':
+      begin
+        res.Append(upceChars, 0, 4);
+        res.Append('00000');
+        res.Append(upceChars.Chars[4]);
+      end;
+  else
+    begin
+      res.Append(upceChars, 0, 5);
+      res.Append('0000');
+      res.Append(lastChar);
+    end;
+  end;
+
+  res.Append(upce.Chars[7]);
+  Result := res.ToString;
+  res.Free;
+end;
+
+class function TUPCEReader.decodeEnd(const row: IBitArray;
+  const endStart: Integer): TArray<Integer>;
+begin
+  Result := TUPCEANReader.findGuardPattern(row, endStart, true,
+    TUPCEReader.MIDDLE_END_PATTERN);
+end;
+
+class function TUPCEReader.DecodeMiddle(const row: IBitArray;
+  const startRange: TArray<Integer>; const res: TStringBuilder): Integer;
+var
+  bestMatch: Integer;
+  counter, ending, lgPatternFound, rowOffset, x: Integer;
+  counters: TArray<Integer>;
+begin
+
+  counters := self.decodeMiddleCounters;
+  counters[0] := 0;
+  counters[1] := 0;
+  counters[2] := 0;
+  counters[3] := 0;
+  ending := row.Size;
+  rowOffset := startRange[1];
+  lgPatternFound := 0;
+  x := 0;
+
+  while ((x < 6) and (rowOffset < ending)) do
+  begin
+    if (not TUPCEANReader.decodeDigit(row, counters, rowOffset,
+      TUPCEANReader.L_AND_G_PATTERNS, bestMatch)) then
+    begin
+      exit(-1);
+    end;
+
+    res.Append(Char(ord('0') + bestMatch mod 10));
+
+    for counter in counters do
+    begin
+      inc(rowOffset, counter)
+    end;
+
+    if (bestMatch >= 10) then
+      lgPatternFound := lgPatternFound or (1 shl (5 - x));
+
+    inc(x)
+  end;
+
+  if (not TUPCEReader.determineNumSysAndCheckDigit(res, lgPatternFound)) then
+  begin
+    exit(-1);
+  end;
+
+  Result := rowOffset;
+end;
+
+function TUPCEReader.BarcodeFormat: TBarcodeFormat;
+begin
+  Result := TBarcodeFormat.UPC_E;
+end;
+
+class procedure TUPCEReader.DoInitialize;
+begin
+  MIDDLE_END_PATTERN := TArray<Integer>.Create(1, 1, 1, 1, 1, 1);
+  NUMSYS_AND_CHECK_DIGIT_PATTERNS :=
+    T2DIntArray.Create(TArray<Integer>.Create($38, $34, 50, $31, $2C, $26, $23,
+    $2A, $29, $25), TArray<Integer>.Create(7, 11, 13, 14, $13, $19, $1C, $15,
+    $16, $1A));
+  decodeMiddleCounters := TArray<Integer>.Create(0,0,0,0);
+end;
+
+class procedure TUPCEReader.DoFinalize;
+begin
+  MIDDLE_END_PATTERN := nil;
+  NUMSYS_AND_CHECK_DIGIT_PATTERNS := nil;
+  decodeMiddleCounters := nil;
+end;
+
+initialization
+
+TUPCEReader.DoInitialize;
+
+finalization
+
+TUPCEReader.DoFinalize;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.Datamatrix.Internal.BitMatrixParser.pas

@@ -0,0 +1,564 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: bbrown@google.com (Brian Brown)
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.Datamatrix.Internal.BitMatrixParser;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  ZXing.DecodeHintType,
+  ZXing.Common.BitMatrix,
+  ZXing.QrCode.Internal.FormatInformation,
+  ZXing.Common.Detector.MathUtils,
+  ZXing.Datamatrix.Internal.Version;
+
+type
+  TBitMatrixParser = class sealed
+  private
+    mappingBitMatrix: TBitMatrix;
+    readMappingMatrix: TBitMatrix;
+    Fversion: TVersion;
+
+    /// <summary>
+    /// <p>Reads a bit of the mapping matrix accounting for boundary wrapping.</p>
+    ///
+    /// <param name="row">Row to read in the mapping matrix</param>
+    /// <param name="column">Column to read in the mapping matrix</param>
+    /// <param name="numRows">Number of rows in the mapping matrix</param>
+    /// <param name="numColumns">Number of columns in the mapping matrix</param>
+    /// <returns>value of the given bit in the mapping matrix</returns>
+    /// </summary>
+    function readModule(row, column, numRows, numColumns: Integer): Boolean;
+
+    /// <summary>
+    /// <p>Reads the 8 bits of the standard Utah-shaped pattern.</p>
+    ///
+    /// <p>See ISO 16022:2006, 5.8.1 Figure 6</p>
+    ///
+    /// <param name="row">Current row in the mapping matrix, anchored at the 8th bit (LSB) of the pattern</param>
+    /// <param name="column">Current column in the mapping matrix, anchored at the 8th bit (LSB) of the pattern</param>
+    /// <param name="numRows">Number of rows in the mapping matrix</param>
+    /// <param name="numColumns">Number of columns in the mapping matrix</param>
+    /// <returns>byte from the utah shape</returns>
+    /// </summary>
+    function readUtah(row, column, numRows, numColumns: Integer): Integer;
+
+    /// <summary>
+    /// <p>Reads the 8 bits of the special corner condition 1.</p>
+    ///
+    /// <p>See ISO 16022:2006, Figure F.3</p>
+    ///
+    /// <param name="numRows">Number of rows in the mapping matrix</param>
+    /// <param name="numColumns">Number of columns in the mapping matrix</param>
+    /// <returns>byte from the Corner condition 1</returns>
+    /// </summary>
+    function readCorner1(numRows, numColumns: Integer): Integer;
+
+    /// <summary>
+    /// <p>Reads the 8 bits of the special corner condition 2.</p>
+    ///
+    /// <p>See ISO 16022:2006, Figure F.4</p>
+    ///
+    /// <param name="numRows">Number of rows in the mapping matrix</param>
+    /// <param name="numColumns">Number of columns in the mapping matrix</param>
+    /// <returns>byte from the Corner condition 2</returns>
+    /// </summary>
+    function readCorner2(numRows, numColumns: Integer): Integer;
+
+    /// <summary>
+    /// <p>Reads the 8 bits of the special corner condition 3.</p>
+    ///
+    /// <p>See ISO 16022:2006, Figure F.5</p>
+    ///
+    /// <param name="numRows">Number of rows in the mapping matrix</param>
+    /// <param name="numColumns">Number of columns in the mapping matrix</param>
+    /// <returns>byte from the Corner condition 3</returns>
+    /// </summary>
+    function readCorner3(numRows, numColumns: Integer): Integer;
+
+    /// <summary>
+    /// <p>Reads the 8 bits of the special corner condition 4.</p>
+    ///
+    /// <p>See ISO 16022:2006, Figure F.6</p>
+    ///
+    /// <param name="numRows">Number of rows in the mapping matrix</param>
+    /// <param name="numColumns">Number of columns in the mapping matrix</param>
+    /// <returns>byte from the Corner condition 4</returns>
+    /// </summary>
+    function readCorner4(numRows, numColumns: Integer): Integer;
+
+    /// <summary>
+    /// <p>Creates the version object based on the dimension of the original bit matrix from
+    /// the datamatrix code.</p>
+    ///
+    /// <p>See ISO 16022:2006 Table 7 - ECC 200 symbol attributes</p>
+    ///
+    /// <param name="bitMatrix">Original <see cref="BitMatrix" />including alignment patterns</param>
+    /// <returns><see cref="Version" />encapsulating the Data Matrix Code's "version"</returns>
+    /// <exception cref="FormatException">if the dimensions of the mapping matrix are not valid</exception>
+    /// Data Matrix dimensions.
+    /// </summary>
+    function readVersion(BitMatrix: TBitMatrix): TVersion;
+  public
+    /// <param name="bitMatrix">{@link TBitMatrix} to parse</param>
+    /// <throws>ReaderException if dimension is not >= 21 and 1 mod 4</throws>
+    constructor Create(const BitMatrix: TBitMatrix);
+
+
+    /// <summary>
+    /// <p>Extracts the data region from a <see cref="BitMatrix" />that contains
+    /// alignment patterns.</p>
+    ///
+    /// <param name="bitMatrix">Original <see cref="BitMatrix" />with alignment patterns</param>
+    /// <returns>BitMatrix that has the alignment patterns removed</returns>
+    /// </summary>
+    function extractDataRegion(BitMatrix: TBitMatrix): TBitMatrix;
+
+    /// <summary>
+    /// <p>Reads the bits in the <see cref="BitMatrix" />representing the mapping matrix (No alignment patterns)
+    /// in the correct order in order to reconstitute the codewords bytes contained within the
+    /// Data Matrix Code.</p>
+    ///
+    /// <returns>bytes encoded within the Data Matrix Code</returns>
+    /// <exception cref="FormatException">if the exact number of bytes expected is not read</exception>
+    /// </summary>
+    function readCodewords: TArray<Byte>;
+    destructor Destroy; override;
+
+    property Version: TVersion read Fversion;
+  end;
+
+implementation
+
+{ TBitMatrixParser }
+
+constructor TBitMatrixParser.Create(const BitMatrix: TBitMatrix);
+var
+  dimension: Integer;
+begin
+  dimension := BitMatrix.Height;
+  if (((dimension >= 8) and (dimension <= 144)) and ((dimension and $01) = 0))
+  then
+  begin
+    self.Fversion := readVersion(BitMatrix);
+    if (self.Version <> nil) then
+    begin
+      self.mappingBitMatrix := extractDataRegion(BitMatrix);
+      self.readMappingMatrix := TBitMatrix.Create(self.mappingBitMatrix.Width,
+        self.mappingBitMatrix.Height)
+    end;
+  end;
+end;
+
+destructor TBitMatrixParser.Destroy;
+begin
+  self.mappingBitMatrix.Free;
+  self.readMappingMatrix.Free;
+  inherited;
+end;
+
+
+
+function TBitMatrixParser.readVersion(BitMatrix: TBitMatrix): TVersion;
+begin
+  Result := TVersion.getVersionForDimensions(BitMatrix.Height, BitMatrix.Width);
+end;
+
+function TBitMatrixParser.readCodewords: TArray<Byte>;
+var
+  resultOffset, row, column, numRows, numColumns: Integer;
+  corner1Read, corner2Read, corner3Read, corner4Read: Boolean;
+begin
+  Result := TArray<Byte>.Create();
+  SetLength(Result, Version.TotalCodewords);
+  resultOffset := 0;
+
+  row := 4;
+  column := 0;
+
+  numRows := self.mappingBitMatrix.Height;
+  numColumns := self.mappingBitMatrix.Width;
+
+  corner1Read := false;
+  corner2Read := false;
+  corner3Read := false;
+  corner4Read := false;
+
+  // Read all of the codewords
+  while ((row < numRows) or (column < numColumns)) do
+  begin
+    // Check the four corner cases
+    if ((row = numRows) and (column = 0) and (not corner1Read)) then
+    begin
+      Result[resultOffset] := Byte(readCorner1(numRows, numColumns));
+      Inc(resultOffset);
+      Dec(row, 2);
+      Inc(column, 2);
+      corner1Read := true;
+    end
+    else
+    begin
+      if ((row = (numRows - 2)) and (column = 0) and ((numColumns and $03) <> 0)
+        and (not corner2Read)) then
+      begin
+        Result[resultOffset] := Byte(readCorner2(numRows, numColumns));
+        Inc(resultOffset);
+        Dec(row, 2);
+        Inc(column, 2);
+        corner2Read := true;
+      end
+      else
+      begin
+        if ((row = (numRows + 4)) and (column = 2) and
+          ((numColumns and $07) = 0) and (not corner3Read)) then
+        begin
+          Result[resultOffset] := Byte(readCorner3(numRows, numColumns));
+          Inc(resultOffset);
+          Dec(row, 2);
+          Inc(column, 2);
+          corner3Read := true;
+        end
+        else
+        begin
+          if ((row = (numRows - 2)) and (column = 0) and
+            ((numColumns and $07) = 4) and (not corner4Read)) then
+          begin
+            Result[resultOffset] := Byte(readCorner4(numRows, numColumns));
+            Inc(resultOffset);
+            Dec(row, 2);
+            Inc(column, 2);
+            corner4Read := true;
+          end
+          else
+          begin
+            // Sweep upward diagonally to the right
+            while ((row >= 0) and (column < numColumns)) do
+            begin
+              if ((row < numRows) and (column >= 0) and
+                (not readMappingMatrix[column, row])) then
+              begin
+                Result[resultOffset] :=
+                  Byte(readUtah(row, column, numRows, numColumns));
+                Inc(resultOffset);
+              end;
+              Dec(row, 2);
+              Inc(column, 2)
+            end;
+            Inc(row);
+            Inc(column, 3);
+
+            // Sweep downward diagonally to the left
+            while ((row < numRows) and (column >= 0)) do
+            begin
+              if ((row >= 0) and (column < numColumns) and
+                (not readMappingMatrix[column, row])) then
+              begin
+                Result[resultOffset] :=
+                  Byte(readUtah(row, column, numRows, numColumns));
+                Inc(resultOffset);
+              end;
+              Inc(row, 2);
+              Dec(column, 2)
+            end;
+            Inc(row, 3);
+            Inc(column)
+          end;
+        end;
+      end;
+    end;
+  end;
+
+  if (resultOffset <> Version.TotalCodewords) then
+    Result := nil;
+end;
+
+function TBitMatrixParser.readModule(row, column, numRows,
+  numColumns: Integer): Boolean;
+begin
+  // Adjust the row and column indices based on boundary wrapping
+  if (row < 0) then
+  begin
+    Inc(row, numRows);
+    Inc(column, (4 - ((numRows + 4) and $07)))
+  end;
+  if (column < 0) then
+  begin
+    Inc(column, numColumns);
+    Inc(row, (4 - ((numColumns + 4) and $07)))
+  end;
+  readMappingMatrix[column, row] := true;
+
+  Result := mappingBitMatrix[column, row];
+end;
+
+function TBitMatrixParser.readUtah(row, column, numRows,
+  numColumns: Integer): Integer;
+var
+  currentByte: Byte;
+begin
+  currentByte := 0;
+  if (readModule((row - 2), (column - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((row - 2), (column - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((row - 1), (column - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((row - 1), (column - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((row - 1), column, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(row, (column - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(row, (column - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(row, column, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  Result := currentByte;
+end;
+
+function TBitMatrixParser.readCorner1(numRows, numColumns: Integer): Integer;
+var
+  currentByte: Byte;
+begin
+  currentByte := 0;
+  if (readModule((numRows - 1), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((numRows - 1), 1, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((numRows - 1), 2, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(1, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(2, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(3, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  Result := currentByte;
+end;
+
+function TBitMatrixParser.readCorner2(numRows, numColumns: Integer): Integer;
+var
+  currentByte: Byte;
+begin
+  currentByte := 0;
+  if (readModule((numRows - 3), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((numRows - 2), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((numRows - 1), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 4), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 3), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(1, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  Result := currentByte;
+end;
+
+function TBitMatrixParser.readCorner3(numRows, numColumns: Integer): Integer;
+var
+  currentByte: Byte;
+begin
+  currentByte := 0;
+  if (readModule((numRows - 1), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((numRows - 1), (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 3), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(1, (numColumns - 3), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(1, (numColumns - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(1, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  Result := currentByte;
+end;
+
+function TBitMatrixParser.readCorner4(numRows, numColumns: Integer): Integer;
+var
+  currentByte: Byte;
+begin
+  currentByte := 0;
+  if (readModule((numRows - 3), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((numRows - 2), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule((numRows - 1), 0, numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (self.readModule(0, (numColumns - 2), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(0, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(1, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(2, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  currentByte := (currentByte shl 1);
+  if (readModule(3, (numColumns - 1), numRows, numColumns)) then
+    currentByte := (currentByte or 1);
+
+  Result := currentByte;
+end;
+
+function TBitMatrixParser.extractDataRegion(BitMatrix: TBitMatrix): TBitMatrix;
+var
+  i, j, symbolSizeRows, dataRegionSizeRows,
+    dataRegionSizeColumns, numDataRegionsRow, numDataRegionsColumn,
+    sizeDataRegionRow, sizeDataRegionColumn, dataRegionRow, dataRegionRowOffset,
+    dataRegionColumn, dataRegionColumnOffset, readRowOffset, writeRowOffset,
+    readColumnOffset, writeColumnOffset: Integer;
+  bitMatrixWithoutAlignment: TBitMatrix;
+begin
+  symbolSizeRows := Version.symbolSizeRows;
+
+  if (BitMatrix.Height <> symbolSizeRows) then
+    raise EArgumentException.Create
+      ('Dimension of bitMarix must match the version size');
+
+  dataRegionSizeRows := Version.dataRegionSizeRows;
+  dataRegionSizeColumns := Version.dataRegionSizeColumns;
+
+  numDataRegionsRow := (symbolSizeRows div dataRegionSizeRows);
+  numDataRegionsColumn := (Version.symbolSizeColumns div dataRegionSizeColumns);
+
+  sizeDataRegionRow := (numDataRegionsRow * dataRegionSizeRows);
+  sizeDataRegionColumn := (numDataRegionsColumn * dataRegionSizeColumns);
+
+  bitMatrixWithoutAlignment := TBitMatrix.Create(sizeDataRegionColumn,
+    sizeDataRegionRow);
+
+  for dataRegionRow := 0 to Pred(numDataRegionsRow) do
+  begin
+    dataRegionRowOffset := (dataRegionRow * dataRegionSizeRows);
+    for dataRegionColumn := 0 to Pred(numDataRegionsColumn) do
+    begin
+      dataRegionColumnOffset := (dataRegionColumn * dataRegionSizeColumns);
+      for i := 0 to Pred(dataRegionSizeRows) do
+      begin
+        readRowOffset := (dataRegionRow * (dataRegionSizeRows + 2)) + 1 + i;
+        writeRowOffset := (dataRegionRowOffset + i);
+        for j := 0 to Pred(dataRegionSizeColumns) do
+        begin
+          readColumnOffset :=
+            (dataRegionColumn * (dataRegionSizeColumns + 2)) + 1 + j;
+          if (BitMatrix[readColumnOffset, readRowOffset]) then
+          begin
+            writeColumnOffset := (dataRegionColumnOffset + j);
+            bitMatrixWithoutAlignment[writeColumnOffset,
+              writeRowOffset] := true;
+          end;
+        end;
+      end;
+    end;
+  end;
+
+  Result := bitMatrixWithoutAlignment;
+
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.Datamatrix.Internal.DataBlock.pas

@@ -0,0 +1,179 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: bbrown@google.com (Brian Brown)   
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.Datamatrix.Internal.DataBlock;
+
+interface
+
+uses 
+  System.SysUtils, 
+  ZXing.Datamatrix.Internal.Version;
+  
+type
+  /// <summary>
+  /// <p>Encapsulates a block of data within a Data Matrix Code. Data Matrix Codes may split their data into
+  /// multiple blocks, each of which is a unit of data and error-correction codewords. Each
+  /// is represented by an instance of this class.</p>
+  /// </summary>
+  TDataBlock = class sealed
+  private
+    Fcodewords: TArray<Byte>;
+    FNumDataCodewords: Integer;
+  public
+    constructor Create(const Acodewords: TArray<Byte>;
+      const ANumDataCodewords: Integer);
+    destructor Destroy;override;
+
+    class function getDataBlocks(rawCodewords: TArray<Byte>;
+      version: TVersion): TArray<TDataBlock>;
+
+    property codewords: TArray<Byte> read Fcodewords;
+    property NumDataCodewords: Integer read FNumDataCodewords;
+  end;
+
+implementation
+
+{ TDataBlock }  
+  
+constructor TDataBlock.Create(const Acodewords: TArray<Byte>;
+  const ANumDataCodewords: Integer);
+begin
+  FnumDataCodewords := AnumDataCodewords;
+  Fcodewords := Acodewords;
+end;
+
+destructor TDataBlock.Destroy;
+begin
+  Fcodewords := nil;
+  inherited;
+end;
+
+class function TDataBlock.getDataBlocks(rawCodewords: TArray<Byte>;
+  version: TVersion): TArray<TDataBlock>;
+var
+  i, j: Integer;
+  ecBlock  : TVersion.TECB;
+  ecBlocks : TVersion.TECBlocks;
+  totalBlocks : Integer;
+  ecBlockArray : TArray<TVersion.TECB>;
+  byteArray    : TArray<Byte>;
+  numResultBlocks,
+  numDataCodewords,
+  numBlockCodewords,
+  longerBlocksTotalCodewords,
+  //shorterBlocksTotalCodewords
+  longerBlocksNumDataCodewords,
+  shorterBlocksNumDataCodewords,
+  rawCodewordsOffset,
+  numLongerBlocks,
+  max,
+  iOffset,
+  jOffset : Integer;
+  specialVersion: Boolean;
+begin
+  // Figure out the number and size of data blocks used by this version
+  ecBlocks := version.ecBlocks;
+  
+  // First count the total number of data blocks
+  totalBlocks := 0;
+  ecBlockArray := ecBlocks.ECBBlocksValue;
+  for ecBlock in ecBlockArray do
+  begin
+    inc(totalBlocks, ecBlock.Count)
+  end;
+    
+  // Now establish DataBlocks of the appropriate size and number of data codewords
+  result := TArray<TDataBlock>.Create();
+  SetLength(result, totalBlocks);
+  numResultBlocks := 0;
+
+  for ecBlock in ecBlockArray do
+  begin
+    for i := 0 to Pred(ecBlock.Count) do
+	  begin
+      numDataCodewords := ecBlock.DataCodewords;
+      numBlockCodewords := (ecBlocks.ECCodewords + numDataCodewords);
+      byteArray := TArray<Byte>.Create();
+      SetLength(byteArray, numBlockCodewords);
+      result[numResultBlocks] := TDataBlock.Create(byteArray, numDataCodewords);
+      Inc(numResultBlocks);
+    end
+  end;
+  
+  // All blocks have the same amount of data, except that the last n
+  // (where n may be 0) have 1 less byte. Figure out where these start.
+  // TODO: There is only one case where there is a difference for Data Matrix for size 144
+  longerBlocksTotalCodewords := Length(result[0].codewords);
+  //shorterBlocksTotalCodewords := (longerBlocksTotalCodewords - 1);
+		 
+  longerBlocksNumDataCodewords := (longerBlocksTotalCodewords - ecBlocks.ECCodewords);
+  shorterBlocksNumDataCodewords := (longerBlocksNumDataCodewords - 1);
+  // The last elements of result may be 1 element shorter for 144 matrix
+  // first fill out as many elements as all of them have minus 1
+  rawCodewordsOffset := 0;
+  for i := 0 to Pred(shorterBlocksNumDataCodewords) do
+  begin
+    for j := 0 to Pred(numResultBlocks) do
+    begin
+      result[j].codewords[i] := rawCodewords[rawCodewordsOffset];
+      Inc(rawCodewordsOffset);
+    end;
+  end;
+  
+  // Fill out the last data block in the longer ones
+  specialVersion := (version.versionNumber = 24);
+  if specialVersion 
+  then 
+     numLongerBlocks := 8 
+  else 
+     numLongerBlocks := numResultBlocks;
+  for j := 0 to Pred(numLongerBlocks) do
+  begin
+    result[j].codewords[(longerBlocksNumDataCodewords - 1)] := rawCodewords[rawCodewordsOffset];
+    Inc(rawCodewordsOffset);
+  end;
+  
+  // Now add in error correction blocks
+  max := Length(result[0].codewords);
+  for i := longerBlocksNumDataCodewords to Pred(max) do
+  begin
+    for j := 0 to Pred(numResultBlocks) do
+    begin
+      if (specialVersion)
+      then
+         jOffset := (j + 8) mod numResultBlocks
+      else
+         jOffset := j;
+      
+	  if (specialVersion and (jOffset > 7))
+      then
+         iOffset := (i - 1)
+      else
+         iOffset := i;
+      result[jOffset].codewords[iOffset] := rawCodewords[rawCodewordsOffset];
+      Inc(rawCodewordsOffset);
+    end;
+  end;
+  
+  if (not (rawCodewordsOffset = Length(rawCodewords)))
+  then
+     raise EArgumentException.Create('Arguments error');
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.Datamatrix.Internal.DecodedBitStreamParser.pas

@@ -0,0 +1,903 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: bbrown@google.com (Brian Brown) and Sean Owen
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.Datamatrix.Internal.DecodedBitStreamParser;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  ZXing.DecoderResult,
+  ZXing.ByteSegments,
+  ZXing.BitSource;
+
+type
+  /// <summary>
+  /// <p>Data Matrix Codes can encode text as bits in one of several modes, and can use multiple modes
+  /// in one Data Matrix Code. This class decodes the bits back into text.</p>
+  ///
+  /// <p>See ISO 16022:2006, 5.2.1 - 5.2.9.2</p>
+  /// </summary>
+  TDecodedBitStreamParser = class abstract
+  type
+    TMode = (PAD_ENCODE, // Not really a mode
+      ASCII_ENCODE, C40_ENCODE, TEXT_ENCODE, ANSIX12_ENCODE, EDIFACT_ENCODE,
+      BASE256_ENCODE);
+  private
+    class var C40_BASIC_SET_CHARS, C40_SHIFT2_SET_CHARS, TEXT_BASIC_SET_CHARS,
+      TEXT_SHIFT2_SET_CHARS, TEXT_SHIFT3_SET_CHARS: TArray<Char>;
+
+    class procedure InitializeClass;
+    class procedure FinalizeClass;
+
+    class function decodeC40Segment(bits: TBitSource;
+      res: TStringBuilder): boolean;
+    class function decodeTextSegment(bits: TBitSource;
+      res: TStringBuilder): boolean;
+    class function decodeAnsiX12Segment(bits: TBitSource;
+      res: TStringBuilder): boolean;
+    class function decodeEdifactSegment(bits: TBitSource;
+      res: TStringBuilder): boolean;
+    class function decodeBase256Segment(bits: TBitSource; res: TStringBuilder;
+      byteSegments:IByteSegments ): boolean;
+    class function decodeAsciiSegment(bits: TBitSource; res: TStringBuilder;
+      resultTrailer: TStringBuilder; var mode: TMode): boolean;
+    class procedure parseTwoBytes(firstByte: Integer; secondByte: Integer;
+      result: TArray<Integer>);
+    class function unrandomize255State(randomizedBase256Codeword: Integer;
+      base256CodewordPosition: Integer): Integer;
+  public
+    class function decode(bytes: TArray<Byte>): TDecoderResult;
+  end;
+
+implementation
+
+{ TDecodedBitStreamParser }
+
+class function TDecodedBitStreamParser.decode(bytes: TArray<Byte>)
+  : TDecoderResult;
+var
+  bits: TBitSource;
+  res, resultTrailer: TStringBuilder;
+  byteSegments: IByteSegments;
+  mode: TMode;
+
+begin
+  bits := TBitSource.Create(bytes);
+  res := TStringBuilder.Create(100);
+  resultTrailer := TStringBuilder.Create(0);
+  byteSegments :=  ByteSegmentsCreate;
+
+  try
+
+    byteSegments.Add(TArray<Byte>.Create()); // TODO (KG): Validation
+    mode := TMode.ASCII_ENCODE;
+    while ((mode <> TMode.PAD_ENCODE) and (bits.available() > 0)) do
+    begin
+      if (mode = TMode.ASCII_ENCODE) then
+      begin
+        if (not TDecodedBitStreamParser.decodeAsciiSegment(bits, res,
+          resultTrailer, mode)) then
+        begin
+          result := nil;  // this line was totally missing. I assume the correct thing is to set result = nil.
+          exit;
+        end;
+      end
+      else
+      begin
+        case mode of
+          TMode.C40_ENCODE:
+            begin
+              if (not TDecodedBitStreamParser.decodeC40Segment(bits, res)) then
+              begin
+                result := nil;
+                exit;
+              end;
+            end;
+          TMode.TEXT_ENCODE:
+            begin
+              if (not TDecodedBitStreamParser.decodeTextSegment(bits, res)) then
+              begin
+                result := nil;
+                exit;
+              end;
+            end;
+          TMode.ANSIX12_ENCODE:
+            begin
+              if (not TDecodedBitStreamParser.decodeAnsiX12Segment(bits, res))
+              then
+              begin
+                result := nil;
+                exit;
+              end;
+            end;
+          TMode.EDIFACT_ENCODE:
+            begin
+              if (not TDecodedBitStreamParser.decodeEdifactSegment(bits, res))
+              then
+              begin
+                result := nil;
+                exit;
+              end;
+            end;
+          TMode.BASE256_ENCODE:
+            begin
+              if (not TDecodedBitStreamParser.decodeBase256Segment(bits, res,
+                    byteSegments)) then
+              begin
+                result := nil;
+                exit;
+              end;
+            end;
+        else
+          begin
+            result := nil;
+            exit;
+          end;
+        end;
+
+        mode := TMode.ASCII_ENCODE;
+      end;
+    end;
+
+    if (resultTrailer.Length > 0) then
+      res.Append(resultTrailer.ToString);
+
+    if (byteSegments.Count = 0) then
+      result := TDecoderResult.Create(bytes, res.ToString, nil, '')
+    else
+      result := TDecoderResult.Create(bytes, res.ToString, byteSegments, '');
+
+  finally
+    bits.Free;
+    res.Free;
+    resultTrailer.Free;
+//
+//    for i := 0 to byteSegments.Count - 1 do
+//    begin
+//
+//    end;
+//
+//    byteSegments.Free;
+  end;
+
+end;
+
+/// <summary>
+/// See ISO 16022:2006, 5.2.7
+/// </summary>
+class function TDecodedBitStreamParser.decodeAnsiX12Segment(bits: TBitSource;
+  res: TStringBuilder): boolean;
+var
+  i: Integer;
+  cValues: TArray<Integer>;
+  firstByte: Integer;
+  cValue: Integer;
+begin
+  // Three ANSI X12 values are encoded in a 16-bit value as
+  // (1600 * C1) + (40 * C2) + C3 + 1
+
+  cValues := TArray<Integer>.Create(0, 0, 0);
+  while (bits.available() > 0) do
+  begin
+    // If there is only one byte left then it will be encoded as ASCII
+    if (bits.available = 8) then
+    begin
+      result := true;
+      exit;
+    end;
+    firstByte := bits.readBits(8);
+    if (firstByte = 254) then
+    begin
+      // Unlatch codeword
+      result := true;
+      exit;
+    end;
+
+    TDecodedBitStreamParser.parseTwoBytes(firstByte, bits.readBits(8), cValues);
+
+    for i := 0 to 2 do
+    begin
+      cValue := cValues[i];
+      case cValue of
+        0:
+          begin
+            // X12 segment terminator <CR>
+            res.Append(#13);
+          end;
+        1:
+          begin
+            // X12 segment separator *
+            res.Append('*');
+          end;
+        2:
+          begin
+            // X12 sub-element separator >
+            res.Append('>');
+          end;
+        3:
+          begin
+            // space
+            res.Append(' ');
+          end;
+      else
+        begin
+          if (cValue < 14) then
+            // 0 - 9
+            res.Append(Char(cValue + 44))
+          else if (cValue < 40) then
+            // A - Z
+            res.Append(Char(cValue + 51))
+          else
+          begin
+            result := false;
+            exit;
+          end;
+        end;
+      end;
+    end;
+  end;;
+
+  result := true;
+end;
+
+/// <summary>
+/// See ISO 16022:2006, 5.2.3 and Annex C, Table C.2
+/// </summary>
+class function TDecodedBitStreamParser.decodeAsciiSegment(bits: TBitSource;
+  res: TStringBuilder; resultTrailer: TStringBuilder; var mode: TMode): boolean;
+var
+  oneByte: Integer;
+  upperShift: boolean;
+  value: Byte;
+begin
+  upperShift := false;
+  mode := TMode.ASCII_ENCODE;
+
+  while (bits.available() > 0) do
+  begin
+    oneByte := bits.readBits(8);
+    if (oneByte = 0) then
+    begin
+      result := false;
+      exit;
+    end
+    else
+    begin
+      if (oneByte <= 128) then
+      begin
+        // ASCII data (ASCII value + 1)
+        if (upperShift) then
+        begin
+          Inc(oneByte, 128);
+          // upperShift := false;
+        end;
+        res.Append(Char(oneByte - 1));
+        mode := TMode.ASCII_ENCODE;
+
+        result := true;
+        exit;
+      end
+      else
+      begin
+        if (oneByte = 129) then
+        begin
+          // Pad
+          mode := TMode.PAD_ENCODE;
+          result := true;
+          exit;
+        end
+        else
+        begin
+          if (oneByte <= 229) then
+          begin
+            // 2-digit data 00-99 (Numeric Value + 130)
+            value := (oneByte - 130);
+            if (value < 10) then
+              // pad with '0' for single digit values
+              res.Append('0');
+            res.Append(value);
+          end
+          else
+          begin
+            if (oneByte = 230) then
+            begin
+              // Latch to C40 encodation
+              mode := TMode.C40_ENCODE;
+              result := true;
+              exit;
+            end
+            else
+            begin
+              if (oneByte = 231) then
+              begin
+                // Latch to Base 256 encodation
+                mode := TMode.BASE256_ENCODE;
+                result := true;
+                exit;
+              end
+              else
+              begin
+                if (oneByte = 232) then
+                begin
+                  // FNC1
+                  res.Append(Char(29)); // translate as ASCII 29
+                end
+                else
+                begin
+                  if ((oneByte = 233) or (oneByte = 234)) then
+                  begin
+                    // Structured Append, Reader Programming
+                    // Ignore these symbols for now
+                    // throw EReaderException.Instance;
+                  end
+                  else
+                  begin
+                    if (oneByte = 235) then
+                    begin
+                      // Upper Shift (shift to Extended ASCII)
+                      upperShift := true;
+                    end
+                    else
+                    begin
+                      if (oneByte = 236) then
+                      begin
+                        // 05 Macro
+                        res.Append('[)>' + #$001E05 + #$001D);
+                        res.Insert(0, #$001E + #$0004);
+                      end
+                      else
+                      begin
+                        if (oneByte = 237) then
+                        begin
+                          // 06 Macro
+                          res.Append('[)>' + #$001E06 + #$001D);
+                          res.Insert(0, #$001E + #$0004);
+                        end
+                        else
+                        begin
+                          if (oneByte = 238) then
+                          begin
+                            // Latch to ANSI X12 encodation
+                            mode := TMode.ANSIX12_ENCODE;
+                            result := true;
+                            exit;
+                          end
+                          else
+                          begin
+                            if (oneByte = 239) then
+                            begin
+                              // Latch to Text encodation
+                              mode := TMode.TEXT_ENCODE;
+                              result := true;
+                              exit;
+                            end
+                            else
+                            begin
+                              if (oneByte = 240) then
+                              begin
+                                mode := TMode.EDIFACT_ENCODE;
+                                result := true;
+                                exit;
+                              end
+                              else
+                              begin
+                                if (oneByte = 241) then
+                                begin
+                                  // ECI Character
+                                  // TODO: I think we need to support ECI
+                                  // throw TReaderException.Instance;
+                                  // Ignore this symbol for now
+                                end
+                                else if (oneByte >= 242) then
+                                begin
+                                    // Not to be used in ASCII encodation
+                                    // ... but work around encoders that end with 254, latch back to ASCII
+                                    if ((oneByte <> 254) or (bits.available() <> 0)) then
+                                    begin
+                                      result := false;
+                                      exit;
+                                    end;
+                                  end;
+                                end;
+                            end;
+                          end;
+                        end;
+                      end;
+                    end;
+                  end;
+                end;
+              end;
+            end;
+          end;
+        end;
+      end;
+    end;
+  end;
+
+  mode := TMode.ASCII_ENCODE;
+  result := true;
+end;
+
+/// <summary>
+/// See ISO 16022:2006, 5.2.9 and Annex B, B.2
+/// </summary>
+class function TDecodedBitStreamParser.decodeBase256Segment(bits: TBitSource;
+  res: TStringBuilder; byteSegments: IByteSegments ): boolean;
+var
+  i, Count, codewordPosition, d1: Integer;
+  bytes: TArray<Byte>;
+begin
+  // Figure out how long the Base 256 Segment is.
+  codewordPosition := (1 + bits.ByteOffset); // position is 1-indexed
+  d1 := TDecodedBitStreamParser.unrandomize255State(bits.readBits(8),
+    codewordPosition);
+  Inc(codewordPosition);
+  if (d1 = 0) then
+    // Read the remainder of the symbol
+    Count := (bits.available div 8)
+  else if (d1 < 250) then
+    Count := d1
+  else
+  begin
+    Count := ((250 * (d1 - 249)) + TDecodedBitStreamParser.unrandomize255State
+      (bits.readBits(8), codewordPosition));
+    Inc(codewordPosition);
+  end;
+
+  // We're seeing NegativeArraySizeException errors from users.
+  if (Count < 0) then
+  begin
+    result := false;
+    exit;
+  end;
+
+  bytes := TArray<Byte>.Create();
+  SetLength(bytes, Count);
+
+  for i := 0 to Pred(Count) do
+  begin
+    // Have seen this particular error in the wild, such as at
+    // http://www.bcgen.com/demo/IDAutomationStreamingDataMatrix.aspx?MODE=3&D=Fred&PFMT=3&PT=F&X=0.3&O=0&LM=0.2
+    if (bits.available() < 8) then
+    begin
+      result := false;
+      exit;
+    end;
+    bytes[i] := Byte(TDecodedBitStreamParser.unrandomize255State
+      (bits.readBits(8), codewordPosition));
+    Inc(codewordPosition);
+  end;
+  byteSegments.Add(bytes);
+  try
+    res.Append(TEncoding.GetEncoding('ISO-8859-1').GetString(bytes))
+  except
+    on uee: Exception do
+      raise EInvalidOpException.Create
+        ('Platform does not support required encoding: ' + uee.Message)
+  end;
+
+  result := true;
+end;
+
+/// <summary>
+/// See ISO 16022:2006, 5.2.5 and Annex C, Table C.1
+/// </summary>
+class function TDecodedBitStreamParser.decodeC40Segment(bits: TBitSource;
+  res: TStringBuilder): boolean;
+var
+  i: Integer;
+  c40char: Char;
+  cValues: TArray<Integer>;
+  upperShift: boolean;
+  shift: Integer;
+  firstByte: Byte;
+  cValue: Integer;
+begin
+  // Three C40 values are encoded in a 16-bit value as
+  // (1600 * C1) + (40 * C2) + C3 + 1
+  // TODO: The Upper Shift with C40 doesn't work in the 4 value scenario all the time
+  upperShift := false;
+
+  cValues := TArray<Integer>.Create(0, 0, 0);
+  shift := 0;
+
+  while (bits.available() > 0) do
+  begin
+    // If there is only one byte left then it will be encoded as ASCII
+    if (bits.available() = 8) then
+    begin
+      result := true;
+      exit;
+    end;
+    firstByte := bits.readBits(8);
+    if (firstByte = 254) then
+    begin
+      // Unlatch codeword
+      result := true;
+      exit;
+    end;
+
+    TDecodedBitStreamParser.parseTwoBytes(firstByte, bits.readBits(8), cValues);
+
+    for i := 0 to 2 do
+    begin
+      cValue := cValues[i];
+      case shift of
+        0:
+          begin
+            if (cValue < 3) then
+              shift := (cValue + 1)
+            else
+            begin
+              if (cValue < Length(C40_BASIC_SET_CHARS)) then
+              begin
+                c40char := C40_BASIC_SET_CHARS[cValue];
+                if (upperShift) then
+                begin
+                  res.Append(Char(c40char) + Char(128));
+                  upperShift := false;
+                end
+                else
+                  res.Append(c40char);
+              end
+              else
+              begin
+                result := false;
+                exit;
+              end;
+            end;
+          end;
+        1:
+          begin
+            if (upperShift) then
+            begin
+              res.Append(Char(cValue) + Char(128));
+              upperShift := false;
+            end
+            else
+              res.Append(Char(cValue));
+            shift := 0;
+          end;
+        2:
+          begin
+            if (cValue < Length(C40_SHIFT2_SET_CHARS)) then
+            begin
+              c40char := C40_SHIFT2_SET_CHARS[cValue];
+              if (upperShift) then
+              begin
+                res.Append(Char(c40char) + Char(128));
+                upperShift := false;
+              end
+              else
+                res.Append(c40char);
+            end
+            else
+            begin
+              if (cValue = 27) then
+                // FNC1
+                res.Append(Char(29)) // translate as ASCII 29
+              else if (cValue = 30) then
+                // Upper Shift
+                upperShift := true
+              else
+              begin
+                result := false;
+                exit;
+              end;
+            end;
+            shift := 0;
+          end;
+        3:
+          begin
+            if (upperShift) then
+            begin
+              res.Append(Char(cValue + 254));
+              upperShift := false;
+            end
+            else
+              res.Append(Char(cValue + 96));
+            shift := 0;
+          end;
+      else
+        begin
+          result := false;
+          exit;
+        end;
+      end;
+    end;
+  end;
+
+  result := true;
+end;
+
+/// <summary>
+/// See ISO 16022:2006, 5.2.8 and Annex C Table C.3
+/// </summary>
+class function TDecodedBitStreamParser.decodeEdifactSegment(bits: TBitSource;
+  res: TStringBuilder): boolean;
+var
+  i: Integer;
+  edifactValue: Integer;
+  bitsLeft: Integer;
+begin
+  while (bits.available() > 0) do
+  begin
+    // If there is only two or less bytes left then it will be encoded as ASCII
+    if (bits.available() <= 16) then
+    begin
+      result := true;
+      exit;
+    end;
+
+    for i := 0 to 3 do
+    begin
+      edifactValue := bits.readBits(6);
+
+      // Check for the unlatch character
+      if (edifactValue = $1F) then
+      begin
+        // 011111
+        // Read rest of byte, which should be 0, and stop
+        bitsLeft := (8 - bits.BitOffset);
+        if (not bitsLeft = 8) then
+          bits.readBits(bitsLeft);
+
+        result := true;
+        exit;
+      end;
+
+      if ((edifactValue and $20) = 0) then
+      begin
+        // no 1 in the leading (6th) bit
+        edifactValue := (edifactValue or $40);
+        // Add a leading 01 to the 6 bit binary value
+      end;
+      res.Append(Char(edifactValue));
+    end;
+  end;
+
+  result := true;
+end;
+
+/// <summary>
+/// See ISO 16022:2006, 5.2.6 and Annex C, Table C.2
+/// </summary>
+class function TDecodedBitStreamParser.decodeTextSegment(bits: TBitSource;
+  res: TStringBuilder): boolean;
+var
+  textChar: Char;
+  cValues: TArray<Integer>;
+  upperShift: boolean;
+  i, shift: Integer;
+  firstByte: Integer;
+  cValue: Integer;
+begin
+  // Three Text values are encoded in a 16-bit value as
+  // (1600 * C1) + (40 * C2) + C3 + 1
+  // TODO: The Upper Shift with Text doesn't work in the 4 value scenario all the time
+  upperShift := false;
+
+  cValues := TArray<Integer>.Create(0, 0, 0);
+  shift := 0;
+
+  while (bits.available() > 0) do
+  begin
+    // If there is only one byte left then it will be encoded as ASCII
+    if (bits.available() = 8) then
+    begin
+      result := true;
+      exit;
+    end;
+
+    firstByte := bits.readBits(8);
+    if (firstByte = 254) then
+    begin
+      // Unlatch codeword
+      result := true;
+      exit;
+    end;
+
+    TDecodedBitStreamParser.parseTwoBytes(firstByte, bits.readBits(8), cValues);
+
+    for i := 0 to 2 do
+    begin
+      cValue := cValues[i];
+
+      case (shift) of
+        0:
+          begin
+            if (cValue < 3) then
+              shift := (cValue + 1)
+            else
+            begin
+              if (cValue < Length(TEXT_BASIC_SET_CHARS)) then
+              begin
+                textChar := TEXT_BASIC_SET_CHARS[cValue];
+                if (upperShift) then
+                begin
+                  res.Append(Char(textChar) + Char(128));
+                  upperShift := false;
+                end
+                else
+                  res.Append(textChar);
+              end
+              else
+              begin
+                result := false;
+                exit;
+              end;
+            end;
+          end;
+        1:
+          begin
+            if (upperShift) then
+            begin
+              res.Append(Char(cValue + 128));
+              upperShift := false;
+            end
+            else
+              res.Append(Char(cValue));
+            shift := 0;
+          end;
+        2:
+          begin
+            // Shift 2 for Text is the same encoding as C40
+            if (cValue < Length(TEXT_SHIFT2_SET_CHARS)) then
+            begin
+              textChar := TEXT_SHIFT2_SET_CHARS[cValue];
+              if (upperShift) then
+              begin
+                res.Append(Char(textChar) + Char(128));
+                upperShift := false;
+              end
+              else
+                res.Append(textChar);
+            end
+            else
+            begin
+              if (cValue = 27) then
+                // FNC1
+                res.Append(Char(29)) // translate as ASCII 29
+              else if (cValue = 30) then
+                // Upper Shift
+                upperShift := true
+              else
+              begin
+                result := false;
+                exit;
+              end;
+            end;
+            shift := 0;
+          end;
+        3:
+          begin
+            if (cValue < Length(TEXT_SHIFT3_SET_CHARS)) then
+            begin
+              textChar := TEXT_SHIFT3_SET_CHARS[cValue];
+              if (upperShift) then
+              begin
+                res.Append(Char(textChar) + Char(128));
+                upperShift := false;
+              end
+              else
+                res.Append(textChar);
+              shift := 0;
+            end
+            else
+            begin
+              result := false;
+              exit;
+            end;
+          end;
+      else
+        begin
+          result := false;
+          exit;
+        end;
+      end;
+    end;
+  end;
+
+  result := true;
+end;
+
+class procedure TDecodedBitStreamParser.parseTwoBytes(firstByte: Integer;
+  secondByte: Integer; result: TArray<Integer>);
+var
+  fullBitValue, temp: Integer;
+begin
+  fullBitValue := (((firstByte shl 8) + secondByte) - 1);
+  temp := (fullBitValue div $640);
+  result[0] := temp;
+  dec(fullBitValue, (temp * $640));
+  temp := (fullBitValue div 40);
+  result[1] := temp;
+  result[2] := (fullBitValue - (temp * 40))
+end;
+
+/// <summary>
+/// See ISO 16022:2006, Annex B, B.2
+/// </summary>
+class function TDecodedBitStreamParser.unrandomize255State
+  (randomizedBase256Codeword: Integer;
+  base256CodewordPosition: Integer): Integer;
+var
+  pseudoRandomNumber: Integer;
+  tempVariable: Integer;
+begin
+  pseudoRandomNumber := (((149 * base256CodewordPosition) mod 255) + 1);
+  tempVariable := (randomizedBase256Codeword - pseudoRandomNumber);
+  if (tempVariable >= 0) then
+    result := tempVariable
+  else
+    result := (tempVariable + 256);
+end;
+
+class procedure TDecodedBitStreamParser.InitializeClass;
+begin
+  /// <summary>
+  /// See ISO 16022:2006, Annex C Table C.1
+  /// The C40 Basic Character Set (*'s used for placeholders for the shift values)
+  /// </summary>
+  C40_BASIC_SET_CHARS := TArray<Char>.Create('*', '*', '*', ' ', '0', '1', '2',
+    '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
+    'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
+    'X', 'Y', 'Z');
+
+  C40_SHIFT2_SET_CHARS := TArray<Char>.Create('!', '"', '#', '$', '%', '&',
+    '''', '(', ')', '*', '+', ',', '-', '.', '/', ':', ';', '<', '=', '>', '?',
+    '@', '[', '\', ']', '^', '_');
+
+  /// <summary>
+  /// See ISO 16022:2006, Annex C Table C.2
+  /// The Text Basic Character Set (*'s used for placeholders for the shift values)
+  /// </summary>
+  TEXT_BASIC_SET_CHARS := TArray<Char>.Create('*', '*', '*', ' ', '0', '1', '2',
+    '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+    'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
+    'x', 'y', 'z');
+
+  // Shift 2 for Text is the same encoding as C40
+  TEXT_SHIFT2_SET_CHARS := C40_SHIFT2_SET_CHARS;
+
+  TEXT_SHIFT3_SET_CHARS := TArray<Char>.Create('`', 'A', 'B', 'C', 'D', 'E',
+    'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
+    'U', 'V', 'W', 'X', 'Y', 'Z', '{', '|', '}', '~', '');
+end;
+
+class procedure TDecodedBitStreamParser.FinalizeClass;
+begin
+  C40_BASIC_SET_CHARS := nil;
+  C40_SHIFT2_SET_CHARS := nil;
+  TEXT_BASIC_SET_CHARS := nil;
+  TEXT_SHIFT2_SET_CHARS := nil;
+  TEXT_SHIFT3_SET_CHARS := nil;
+end;
+
+initialization
+
+TDecodedBitStreamParser.InitializeClass;
+
+finalization
+
+TDecodedBitStreamParser.FinalizeClass;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.Datamatrix.Internal.Decoder.pas

@@ -0,0 +1,229 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: bbrown@google.com (Brian Brown)
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.Datamatrix.Internal.Decoder;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  ZXing.DecodeHintType,
+  ZXing.Common.BitMatrix,
+  ZXing.Datamatrix.Internal.BitMatrixParser,
+  ZXing.Datamatrix.Internal.DataBlock,
+  ZXing.Common.ReedSolomon.ReedSolomonDecoder,
+  ZXing.Common.ReedSolomon.GenericGF,
+  ZXing.DecoderResult,
+  ZXing.Datamatrix.Internal.DecodedBitStreamParser;
+
+type
+  /// <summary>
+  /// <p>The main class which implements Data Matrix Code decoding -- as opposed to locating and extracting
+  /// the Data Matrix Code from an image.</p>
+  /// </summary>
+  TDataMatrixDecoder = class sealed
+  private
+    rsDecoder: TReedSolomonDecoder;
+  public
+    constructor Create;
+    destructor Destroy; override;
+
+    function correctErrors(codewordBytes: TArray<Byte>; numDataCodewords: Integer): boolean;
+    function decode(bits: TBitMatrix): TDecoderResult; overload;
+    function decode(image: TArray < TArray < boolean >> ): TDecoderResult; overload;
+  end;
+
+implementation
+
+{ TDataMatrixDecoder }
+
+/// <summary>
+/// Initializes a new instance of the <see cref="Decoder"/> class.
+/// </summary>
+constructor TDataMatrixDecoder.Create;
+begin
+  rsDecoder := TReedSolomonDecoder.Create(TGenericGF.DATA_MATRIX_FIELD_256);
+end;
+
+destructor TDataMatrixDecoder.Destroy;
+begin
+  FreeAndNil(rsDecoder);
+  inherited;
+end;
+
+/// <summary>
+/// <p>Convenience method that can decode a Data Matrix Code represented as a 2D array of booleans.
+/// "true" is taken to mean a black module.</p>
+///
+/// <param name="image">booleans representing white/black Data Matrix Code modules</param>
+/// <returns>text and bytes encoded within the Data Matrix Code</returns>
+/// <exception cref="FormatException">if the Data Matrix Code cannot be decoded</exception>
+/// <exception cref="ChecksumException">if error correction fails</exception>
+/// </summary>
+function TDataMatrixDecoder.decode(image: TArray < TArray < boolean >> ): TDecoderResult;
+var
+  i, j: Integer;
+  dimension: Integer;
+  bits: TBitMatrix;
+begin
+  dimension := Length(image);
+  bits := TBitMatrix.Create(dimension);
+  for i := 0 to Pred(dimension) do
+  begin
+    for j := 0 to Pred(dimension) do
+    begin
+      if (image[i][j]) then
+        bits[j, i] := true;
+    end;
+  end;
+
+  Result := decode(bits);
+end;
+
+/// <summary>
+/// <p>Decodes a Data Matrix Code represented as a <see cref="BitMatrix" />. A 1 or "true" is taken
+/// to mean a black module.</p>
+/// </summary>
+/// <param name="bits">booleans representing white/black Data Matrix Code modules</param>
+/// <returns>text and bytes encoded within the Data Matrix Code</returns>
+function TDataMatrixDecoder.decode(bits: TBitMatrix): TDecoderResult;
+var
+  i, j: Integer;
+  db: TDataBlock;
+  parser: TBitMatrixParser;
+  codewords: TArray<Byte>;
+  dataBlocks: TArray<TDataBlock>;
+  dataBlocksCount, totalBytes: Integer;
+  resultBytes: TArray<Byte>;
+  DataBlock: TDataBlock;
+  codewordBytes: TArray<Byte>;
+  numDataCodewords: Integer;
+begin
+  // Construct a parser and read version, error-correction level
+  parser := TBitMatrixParser.Create(bits);
+  DataBlock := nil;
+
+  try
+
+    if (parser.Version = nil) then
+    begin
+      Result := nil;
+      exit;
+    end;
+
+    // Read codewords
+    codewords := parser.readCodewords;
+    if (codewords = nil) then
+    begin
+      Result := nil;
+      exit;
+    end;
+    // Separate into data blocks
+    dataBlocks := TDataBlock.getDataBlocks(codewords, parser.Version);
+
+    dataBlocksCount := Length(dataBlocks);
+
+    // Count total number of data bytes
+    totalBytes := 0;
+    for db in dataBlocks do
+    begin
+      Inc(totalBytes, db.numDataCodewords)
+    end;
+    resultBytes := TArray<Byte>.Create();
+    SetLength(resultBytes, totalBytes);
+
+    // Error-correct and copy data blocks together into a stream of bytes
+    for j := 0 to Pred(dataBlocksCount) do
+    begin
+      DataBlock := dataBlocks[j];
+      codewordBytes := DataBlock.codewords;
+      numDataCodewords := DataBlock.numDataCodewords;
+      if (not correctErrors(codewordBytes, numDataCodewords)) then
+      begin
+        if Assigned(DataBlock) then
+          DataBlock.Free;
+        DataBlock := nil;
+        resultBytes := nil;
+        codewordBytes := nil;
+        Result := nil;
+        exit;
+      end;
+      for i := 0 to Pred(numDataCodewords) do
+      begin
+        // De-interlace data blocks.
+        resultBytes[(i * dataBlocksCount) + j] := codewordBytes[i];
+      end;
+
+      DataBlock.Free;
+      DataBlock := nil;
+    end;
+
+    // Decode the contents of that stream of bytes
+    Result := TDecodedBitStreamParser.decode(resultBytes);
+
+  finally
+
+    if Assigned(DataBlock) then
+      DataBlock.Free;
+
+    resultBytes := nil;
+    codewordBytes := nil;
+    parser.Free;
+  end;
+
+end;
+
+/// <summary>
+/// <p>Given data and error-correction codewords received, possibly corrupted by errors, attempts to
+/// correct the errors in-place using Reed-Solomon error correction.</p>
+///
+/// <param name="codewordBytes">data and error correction codewords</param>
+/// <param name="numDataCodewords">number of codewords that are data bytes</param>
+/// </summary>
+function TDataMatrixDecoder.correctErrors(codewordBytes: TArray<Byte>; numDataCodewords: Integer): boolean;
+var
+  i, numCodewords, numECCodewords: Integer;
+  codewordsInts: TArray<Integer>;
+begin
+  numCodewords := Length(codewordBytes);
+  // First read into an array of ints
+  codewordsInts := TArray<Integer>.Create();
+  SetLength(codewordsInts, numCodewords);
+  for i := 0 to Pred(numCodewords) do
+  begin
+    codewordsInts[i] := (codewordBytes[i] and $FF);
+  end;
+  numECCodewords := (Length(codewordBytes) - numDataCodewords);
+  if (not rsDecoder.decode(codewordsInts, numECCodewords)) then
+  begin
+    Result := false;
+    exit;
+  end;
+  // Copy back into array of bytes -- only need to worry about the bytes that were data
+  // We don't care about errors in the error-correction codewords
+  for i := 0 to Pred(numDataCodewords) do
+  begin
+    codewordBytes[i] := Byte(codewordsInts[i]);
+  end;
+
+  Result := true;
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.Datamatrix.Internal.Version.pas

@@ -0,0 +1,290 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: bbrown@google.com (Brian Brown)
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.Datamatrix.Internal.Version;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.Common.BitMatrix,
+  ZXing.QrCode.Internal.FormatInformation,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// The Version object encapsulates attributes about a particular
+  /// size Data Matrix Code.
+  /// </summary>
+  TVersion = class sealed
+
+  type
+    /// <summary>
+    /// <p>Encapsualtes the parameters for one error-correction block in one symbol version.
+    /// This includes the number of data codewords, and the number of times a block with these
+    /// parameters is used consecutively in the Data Matrix code version's format.</p>
+    /// </summary>
+    TECB = class
+    private
+      Fcount: Integer;
+      FdataCodewords: Integer;
+    public
+      constructor Create(count: Integer; dataCodewords: Integer);
+
+      property count: Integer read Fcount;
+      property dataCodewords: Integer read FdataCodewords;
+    end;
+
+    /// <summary>
+    /// <p>Encapsulates a set of error-correction blocks in one symbol version. Most versions will
+    /// use blocks of differing sizes within one version, so, this encapsulates the parameters for
+    /// each set of blocks. It also holds the number of error-correction codewords per block since it
+    /// will be the same across all blocks within one version.</p>
+    /// </summary>
+    TECBlocks = class
+    private
+      _ecBlocksValue: TArray<TECB>;
+      _ecCodewords: Integer;
+    public
+      property ECBBlocksValue: TArray<TECB> read _ecBlocksValue;
+      property ECCodewords: Integer read _ecCodewords;
+
+      constructor Create(ECCodewords: Integer; ecBlocks: TECB); overload;
+      constructor Create(ECCodewords: Integer; ecBlocks1: TECB;
+        ecBlocks2: TECB); overload;
+      destructor Destroy; override;
+    end;
+
+  private
+    FdataRegionSizeColumns: Integer;
+    FdataRegionSizeRows: Integer;
+    FecBlocks: TECBlocks;
+    FsymbolSizeColumns: Integer;
+    FsymbolSizeRows: Integer;
+    FtotalCodewords: Integer;
+    FversionNumber: Integer;
+
+    class var buildVersions: TArray<TVersion>;
+    class procedure ClassInit; static;
+    class procedure ClassFinal; static;
+    class function GetBuildVersions: TArray<TVersion>; static;
+
+    constructor Create(versionNumber, symbolSizeRows, symbolSizeColumns,
+      dataRegionSizeRows, dataRegionSizeColumns: Integer; ecBlocks: TECBlocks);
+
+  public
+    destructor Destroy; override;
+    function ToString: string; override;
+    class function getVersionForDimensions(numRows: Integer;
+      numColumns: Integer): TVersion;
+
+    property dataRegionSizeColumns: Integer read FdataRegionSizeColumns;
+    property dataRegionSizeRows: Integer read FdataRegionSizeRows;
+    property ecBlocks: TECBlocks read FecBlocks;
+    property symbolSizeColumns: Integer read FsymbolSizeColumns;
+    property symbolSizeRows: Integer read FsymbolSizeRows;
+    property totalCodewords: Integer read FtotalCodewords;
+    property versionNumber: Integer read FversionNumber;
+  end;
+
+implementation
+
+{ TVersion.TECB }
+
+constructor TVersion.TECB.Create(count, dataCodewords: Integer);
+begin
+  self.Fcount := count;
+  self.FdataCodewords := dataCodewords;
+end;
+
+{ TVersion.TECBlocks }
+
+constructor TVersion.TECBlocks.Create(ECCodewords: Integer; ecBlocks: TECB);
+begin
+  self._ecCodewords := ECCodewords;
+  self._ecBlocksValue := TArray<TECB>.Create(ecBlocks);
+end;
+
+constructor TVersion.TECBlocks.Create(ECCodewords: Integer; ecBlocks1: TECB;
+  ecBlocks2: TECB);
+begin
+  self._ecCodewords := ECCodewords;
+  self._ecBlocksValue := TArray<TECB>.Create(ecBlocks1, ecBlocks2);
+end;
+
+destructor TVersion.TECBlocks.Destroy;
+var
+  ecb: TECB;
+  i: Integer;
+
+begin
+
+  for i := 0 to Length(_ecBlocksValue) - 1 do
+  begin
+    ecb := _ecBlocksValue[i];
+    FreeAndNil(ecb);
+  end;
+
+  _ecBlocksValue := nil;
+  inherited;
+end;
+
+{ TVersion }
+
+class procedure TVersion.ClassInit();
+begin
+  TVersion.buildVersions := TVersion.GetBuildVersions;
+end;
+
+class procedure TVersion.ClassFinal();
+var
+  Version: TVersion;
+begin
+
+  for Version in TVersion.buildVersions do
+  begin
+    Version.Free;
+  end;
+
+  TVersion.buildVersions := nil;
+end;
+
+constructor TVersion.Create(versionNumber, symbolSizeRows, symbolSizeColumns,
+  dataRegionSizeRows, dataRegionSizeColumns: Integer; ecBlocks: TECBlocks);
+var
+  ecBlock: TECB;
+  total: Integer;
+  ECCodewords: Integer;
+begin
+  self.FversionNumber := versionNumber;
+  self.FsymbolSizeRows := symbolSizeRows;
+  self.FsymbolSizeColumns := symbolSizeColumns;
+  self.FdataRegionSizeRows := dataRegionSizeRows;
+  self.FdataRegionSizeColumns := dataRegionSizeColumns;
+  self.FecBlocks := ecBlocks;
+  total := 0;
+  ECCodewords := ecBlocks.ECCodewords;
+
+  for ecBlock in ecBlocks.ECBBlocksValue do
+  begin
+    Inc(total, (ecBlock.count * (ecBlock.dataCodewords + ECCodewords)))
+  end;
+
+  self.FtotalCodewords := total;
+end;
+
+destructor TVersion.Destroy;
+begin
+
+  FreeAndNil(FecBlocks);
+
+  inherited;
+end;
+
+/// <summary>
+/// See ISO 16022:2006 5.5.1 Table 7
+/// </summary>
+
+class function TVersion.GetBuildVersions: TArray<TVersion>;
+begin
+  Result := TArray<TVersion>.Create(TVersion.Create(1, 10, 10, 8, 8,
+    TECBlocks.Create(5, TECB.Create(1, 3))), TVersion.Create(2, 12, 12, 10, 10,
+    TECBlocks.Create(7, TECB.Create(1, 5))), TVersion.Create(3, 14, 14, 12, 12,
+    TECBlocks.Create(10, TECB.Create(1, 8))), TVersion.Create(4, $10, $10, 14,
+    14, TECBlocks.Create(12, TECB.Create(1, 12))), TVersion.Create(5, $12, $12,
+    $10, $10, TECBlocks.Create(14, TECB.Create(1, $12))),
+    TVersion.Create(6, 20, 20, $12, $12, TECBlocks.Create($12,
+    TECB.Create(1, $16))), TVersion.Create(7, $16, $16, 20, 20,
+    TECBlocks.Create(20, TECB.Create(1, 30))), TVersion.Create(8, $18, $18, $16,
+    $16, TECBlocks.Create($18, TECB.Create(1, $24))),
+    TVersion.Create(9, $1A, $1A, $18, $18, TECBlocks.Create($1C,
+    TECB.Create(1, $2C))), TVersion.Create(10, $20, $20, 14, 14,
+    TECBlocks.Create($24, TECB.Create(1, $3E))), TVersion.Create(11, $24, $24,
+    $10, $10, TECBlocks.Create($2A, TECB.Create(1, $56))),
+    TVersion.Create(12, 40, 40, $12, $12, TECBlocks.Create($30,
+    TECB.Create(1, $72))), TVersion.Create(13, $2C, $2C, 20, 20,
+    TECBlocks.Create($38, TECB.Create(1, $90))), TVersion.Create(14, $30, $30,
+    $16, $16, TECBlocks.Create($44, TECB.Create(1, $AE))),
+    TVersion.Create(15, $34, $34, $18, $18, TECBlocks.Create($2A,
+    TECB.Create(2, $66))), TVersion.Create($10, $40, $40, 14, 14,
+    TECBlocks.Create($38, TECB.Create(2, 140))), TVersion.Create($11, $48, $48,
+    $10, $10, TECBlocks.Create($24, TECB.Create(4, $5C))),
+    TVersion.Create($12, 80, 80, $12, $12, TECBlocks.Create($30,
+    TECB.Create(4, $72))), TVersion.Create($13, $58, $58, 20, 20,
+    TECBlocks.Create($38, TECB.Create(4, $90))), TVersion.Create(20, $60, $60,
+    $16, $16, TECBlocks.Create($44, TECB.Create(4, $AE))),
+    TVersion.Create($15, $68, $68, $18, $18, TECBlocks.Create($38,
+    TECB.Create(6, $88))), TVersion.Create($16, 120, 120, $12, $12,
+    TECBlocks.Create($44, TECB.Create(6, $AF))), TVersion.Create($17, $84, $84,
+    20, 20, TECBlocks.Create($3E, TECB.Create(8, $A3))),
+    TVersion.Create($18, $90, $90, $16, $16, TECBlocks.Create($3E,
+    TECB.Create(8, $9C), TECB.Create(2, $9B))), TVersion.Create($19, 8, $12, 6,
+    $10, TECBlocks.Create(7, TECB.Create(1, 5))), TVersion.Create($1A, 8, $20,
+    6, 14, TECBlocks.Create(11, TECB.Create(1, 10))),
+    TVersion.Create($1B, 12, $1A, 10, $18, TECBlocks.Create(14,
+    TECB.Create(1, $10))), TVersion.Create($1C, 12, $24, 10, $10,
+    TECBlocks.Create($12, TECB.Create(1, $16))), TVersion.Create($1D, $10, $24,
+    14, $10, TECBlocks.Create($18, TECB.Create(1, $20))),
+    TVersion.Create(30, $10, $30, 14, $16, TECBlocks.Create($1C,
+    TECB.Create(1, $31))));
+end;
+
+/// <summary>
+/// <p>Deduces version information from Data Matrix dimensions.</p>
+///
+/// <param name="numRows">Number of rows in modules</param>
+/// <param name="numColumns">Number of columns in modules</param>
+/// <returns>Version for a Data Matrix Code of those dimensions</returns>
+/// <exception cref="FormatException">if dimensions do correspond to a valid Data Matrix size</exception>
+/// </summary>
+class function TVersion.getVersionForDimensions(numRows: Integer;
+  numColumns: Integer): TVersion;
+var
+  Version: TVersion;
+begin
+  Result := nil;
+
+  if (((numRows and $01) = 0) and ((numColumns and $01) = 0)) then
+  begin
+    for Version in TVersion.buildVersions do
+    begin
+      if ((Version.symbolSizeRows = numRows) and
+        (Version.symbolSizeColumns = numColumns)) then
+      begin
+        Result := Version;
+        break;
+      end;
+    end;
+  end;
+end;
+
+function TVersion.ToString: string;
+begin
+  Result := versionNumber.ToString();
+end;
+
+Initialization
+
+TVersion.ClassInit();
+
+Finalization
+
+TVersion.ClassFinal();
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.BitMatrixParser.pas

@@ -0,0 +1,361 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.BitMatrixParser;
+
+interface
+
+uses 
+  SysUtils, 
+  Generics.Collections, 
+  ZXing.DecodeHintType,
+  ZXing.Common.BitMatrix, 
+  ZXing.QrCode.Internal.Version,
+  ZXing.QrCode.Internal.FormatInformation, 
+  ZXing.Common.Detector.MathUtils, 
+  ZXing.QrCode.Internal.DataMask;
+
+type
+  TBitMatrixParser = class
+  private
+    BitMatrix: TBitMatrix;
+    mirrored: boolean;
+    parsedVersion: TVersion;
+
+    function copyBit(const i, j, versionBits: Integer): Integer;
+  public
+    parsedFormatInfo: TFormatInformation;
+
+    constructor Create(const BitMatrix: TBitMatrix);
+
+    /// <param name="bitMatrix">{@link TBitMatrix} to parse</param>
+    /// <throws>ReaderException if dimension is not >= 21 and 1 mod 4</throws>
+    class function createBitMatrixParser(
+      const bitMatrix: TBitMatrix): TBitMatrixParser; static;
+
+    (** Mirror the bit matrix in order to attempt a second reading. *)
+    procedure mirror;
+
+    (**
+      * Revert the mask removal done while reading the code words. The bit matrix should revert to its original state.
+      *)
+    procedure remask;
+    (**
+      * Prepare the parser for a mirrored operation.
+      * This flag has effect only on the {@link #readFormatInformation()} and the
+      * {@link #readVersion()}. Before proceeding with {@link #readCodewords()} the
+      * {@link #mirror()} method should be called.
+      *
+      * @param mirror Whether to read version and format information mirrored.
+      *)
+    procedure setMirror(const mirror: Boolean);
+
+    /// <summary> <p>Reads format information from one of its two locations within the QR Code.</p>
+    ///
+    /// </summary>
+    /// <returns> {@link FormatInformation} encapsulating the QR Code's format info
+    /// </returns>
+    /// <throws>  ReaderException if both format information locations cannot be parsed as </throws>
+    /// <summary> the valid encoding of format information
+    /// </summary>
+    function readFormatInformation: TFormatInformation;
+
+    /// <summary> <p>Reads version information from one of its two locations within the QR Code.</p>
+    ///
+    /// </summary>
+    /// <returns> {@link Version} encapsulating the QR Code's version
+    /// </returns>
+    /// <throws>  ReaderException if both version information locations cannot be parsed as </throws>
+    /// <summary> the valid encoding of version information
+    /// </summary>
+    function readVersion: TVersion;
+
+    // <summary> <p>Reads the bits in the {@link BitMatrix} representing the finder pattern in the
+    // correct order in order to reconstruct the codewords bytes contained within the
+    /// QR Code.</p>
+    ///
+    /// </summary>
+    /// <returns> bytes encoded within the QR Code
+    /// </returns>
+    /// <throws>  ReaderException if the exact number of bytes expected is not read </throws>
+    function readCodewords: TArray<Byte>;
+  end;
+
+implementation
+
+{ TBitMatrixParser }
+
+constructor TBitMatrixParser.Create(const bitMatrix: TBitMatrix);
+begin
+  // Should only be called from createBitMatrixParser with the important checks before
+  Self.bitMatrix := BitMatrix;
+end;
+
+class function TBitMatrixParser.createBitMatrixParser(
+  const bitMatrix: TBitMatrix): TBitMatrixParser;
+var
+  dimension: Integer;
+begin
+  dimension := BitMatrix.Height;
+  if ((dimension < 21) and ((dimension and $03) <> 1))
+  then
+     Result := nil
+  else
+     Result := TBitMatrixParser.Create(bitMatrix);
+end;
+
+function TBitMatrixParser.copyBit(const i, j, versionBits: Integer): Integer;
+var
+  bit: Boolean;
+begin
+  if (mirrored)
+  then
+     bit := BitMatrix[j, i]
+  else
+     bit := BitMatrix[i, j];
+
+  if (bit)
+  then
+     Result := ((versionBits shl 1) or $1)
+  else
+     Result := (versionBits shl 1);
+end;
+
+procedure TBitMatrixParser.mirror;
+var
+  x, y: Integer;
+begin
+  for x := 0 to Pred(bitMatrix.width) do
+    for y := (x + 1) to Pred(bitMatrix.height) do
+      if (bitMatrix[x, y] <> bitMatrix[y, x]) then
+      begin
+        bitMatrix.flip(y, x);
+        bitMatrix.flip(x, y);
+      end;
+end;
+
+function TBitMatrixParser.readCodewords: TArray<Byte>;
+var
+  formatInfo: TFormatInformation;
+  dimension, resultOffset,
+  currentByte, bitsRead,
+  j, i, count, col: Integer;
+  functionPattern: TBitMatrix;
+  readingUp: boolean;
+  Version: TVersion;
+  DataMask: TDataMask;
+begin
+  Result := nil;
+
+  formatInfo := readFormatInformation;
+  if (formatInfo = nil)
+  then
+     exit;
+
+  Version := readVersion;
+  if (Version = nil)
+  then
+     exit;
+
+  // Get the data mask for the format used in this QR Code. This will exclude
+  // some bits from reading as we wind through the bit matrix.
+  DataMask := TDataMask.forReference(formatInfo.DataMask);
+  dimension := bitMatrix.Height;
+  DataMask.unmaskBitMatrix(BitMatrix, dimension);
+
+  functionPattern := Version.buildFunctionPattern;
+
+  try
+    readingUp := true;
+    Result := TArray<Byte>.Create();
+    SetLength(Result, version.TotalCodewords);
+    resultOffset := 0;
+    currentByte := 0;
+    bitsRead := 0;
+    j := (dimension - 1);
+    // Read columns in pairs, from right to left
+    while ((j > 0)) do
+    begin
+      if (j = 6)
+      then
+         // Skip whole column with vertical alignment pattern;
+         // saves time and makes the other code proceed more cleanly
+         Dec(j);
+      // Read alternatingly from bottom to top then top to bottom
+      for count := 0 to Pred(dimension) do
+      begin
+        if (readingUp)
+        then
+           i := ((dimension - 1) - count)
+        else
+           i := count;
+        for col := 0 to Pred(2) do
+        begin
+          // Ignore bits covered by the function pattern
+          if (not functionPattern[(j - col), i]) then
+          begin
+            // Read a bit
+            Inc(bitsRead);
+            currentByte := (currentByte shl 1);
+            if (bitMatrix[(j - col), i])
+            then
+               currentByte := (currentByte or 1);
+            // If we've made a whole byte, save it off
+            if (bitsRead = 8) then
+            begin
+//              if resultoffset > high(Result) then
+//                 raise EProgrammerNotFound.CreateFmt('resultoffset %d> high(Result) %d',[resultOffset,high(Result)])
+//              else if resultoffset < 0 then
+//                 raise EProgrammerNotFound.CreateFmt('resultoffset %d<0!',[resultOffset]);
+
+              if (resultoffset>=0) and  (resultoffset <= high(Result)) then // minchiata aggiunta da carlo
+                  Result[resultOffset] := Byte(currentByte);
+
+              Inc(resultOffset);
+              bitsRead := 0;
+              currentByte := 0;
+            end
+          end;
+        end;
+      end;
+      readingUp := not readingUp; // readingUp = !readingUp; // switch directions
+      Dec(j, 2);
+    end;
+
+    if (resultOffset <> version.TotalCodewords)
+    then
+       Result := nil;
+  finally
+    FreeAndNil(functionPattern);
+  end;
+end;
+
+function TBitMatrixParser.readFormatInformation: TFormatInformation;
+var
+  formatInfoBits1,
+  formatInfoBits2,
+  dimension,
+  i, j, jMin: Integer;
+begin
+  if (Self.parsedFormatInfo <> nil) then
+  begin
+    Result := Self.parsedFormatInfo;
+    exit;
+  end;
+
+  // Read top-left format info bits
+  formatInfoBits1 := 0;
+  for i := 0 to Pred(6) do
+    formatInfoBits1 := self.copyBit(i, 8, formatInfoBits1);
+  // .. and skip a bit in the timing pattern ...
+  formatInfoBits1 := self.copyBit(7, 8, formatInfoBits1);
+  formatInfoBits1 := self.copyBit(8, 8, formatInfoBits1);
+  formatInfoBits1 := self.copyBit(8, 7, formatInfoBits1);
+  // .. and skip a bit in the timing pattern ...
+  for j := 5 downto 0 do
+    formatInfoBits1 := self.copyBit(8, j, formatInfoBits1);
+  // Read the top-right/bottom-left pattern too
+  dimension := Self.bitMatrix.Height;
+  formatInfoBits2 := 0;
+  jMin := (dimension - 7);
+  for j := (dimension - 1) downto jMin do
+    formatInfoBits2 := self.copyBit(8, j, formatInfoBits2);
+  for i := (dimension - 8) to Pred(dimension) do
+    formatInfoBits2 := self.copyBit(i, 8, formatInfoBits2);
+
+  parsedFormatInfo := TFormatInformation.DecodeFormatInformation(formatInfoBits1, formatInfoBits2);
+
+  if (parsedFormatInfo <> nil)
+  then
+     Result := Self.parsedFormatInfo
+  else
+     Result := nil;
+end;
+
+function TBitMatrixParser.readVersion: TVersion;
+var
+  dimension,
+  provisionalVersion,
+  versionBits,
+  i, j, ijMin: Integer;
+begin
+  if (Self.parsedVersion <> nil) then
+  begin
+    Result := Self.parsedVersion;
+    exit;
+  end;
+
+  dimension := Self.bitMatrix.Height;
+  provisionalVersion := TMathUtils.Asr((dimension - 17), 2);
+  if (provisionalVersion <= 6) then
+  begin
+    Result := TVersion.getVersionForNumber(provisionalVersion);
+    exit;
+  end;
+
+  // Read top-right version info: 3 wide by 6 tall
+  versionBits := 0;
+  ijMin := (dimension - 11);
+  for j := 5 downto 0 do
+    for i := (dimension - 9) downto ijMin do
+      versionBits := Self.copyBit(i, j, versionBits);
+
+  parsedVersion := TVersion.decodeVersionInformation(versionBits);
+  if ((parsedVersion <> nil) and
+      (parsedVersion.DimensionForVersion = dimension)) then
+  begin
+    Result := parsedVersion;
+    exit;
+  end;
+
+  // Hmm, failed. Try bottom left: 6 wide by 3 tall
+  versionBits := 0;
+  for i := 5 downto 0 do
+    for j := (dimension - 9) downto ijMin do
+      versionBits := self.copyBit(i, j, versionBits);
+
+  parsedVersion := TVersion.decodeVersionInformation(versionBits);
+  if ((parsedVersion <> nil) and
+      (parsedVersion.DimensionForVersion = dimension))
+  then
+     Result := self.parsedVersion
+  else
+     Result := nil;
+end;
+
+procedure TBitMatrixParser.remask;
+var
+  dimension: Integer;
+begin
+  if (parsedFormatInfo <> nil) then
+  begin
+    dimension := bitMatrix.Height;
+    TDataMask.forReference(parsedFormatInfo.DataMask)
+      .unmaskBitMatrix(bitMatrix, dimension);
+  end;
+end;
+
+procedure TBitMatrixParser.setMirror(const mirror: Boolean);
+begin
+  Self.parsedVersion := nil;
+  Self.parsedFormatInfo := nil;
+  Self.mirrored := mirror;
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.DataBlock.pas

@@ -0,0 +1,187 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.DataBlock;
+
+interface
+
+uses 
+  System.SysUtils, 
+  ZXing.QrCode.Internal.Version,
+  ZXing.QrCode.Internal.ErrorCorrectionLevel;
+
+type
+  /// <summary> <p>Encapsulates a block of data within a QR Code. QR Codes may split their data into
+  /// multiple blocks, each of which is a unit of data and error-correction codewords. Each
+  /// is represented by an instance of this class.</p>
+  /// </summary>
+  TDataBlock = class sealed
+  private
+    Fcodewords: TArray<Byte>;
+    FnumDataCodewords: Integer;
+  public
+    constructor Create(const codewords: TArray<Byte>;
+      const NumDataCodewords: Integer);
+    destructor Destroy; override;
+
+    /// <summary> <p>When QR Codes use multiple data blocks, they are actually interleaved.
+    /// That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
+    /// method will separate the data into original blocks.</p>
+    ///
+    /// </summary>
+    /// <param name="rawCodewords">bytes as read directly from the QR Code
+    /// </param>
+    /// <param name="version">version of the QR Code
+    /// </param>
+    /// <param name="ecLevel">error-correction level of the QR Code
+    /// </param>
+    /// <returns> {@link TDataBlock}s containing original bytes, "de-interleaved" from representation in the
+    /// QR Code
+    /// </returns>
+    class function getDataBlocks(const rawCodewords: TArray<Byte>;
+      const version: TVersion; const ecLevel: TErrorCorrectionLevel): TArray<TDataBlock>; static;
+
+    property codewords : TArray<Byte> read Fcodewords;
+    property numDataCodewords : Integer read FnumDataCodewords;
+  end;
+
+implementation
+
+{ TDataBlock }
+
+constructor TDataBlock.Create(const codewords: TArray<Byte>;
+  const numDataCodewords: Integer);
+begin
+  Fcodewords := codewords;
+  FnumDataCodewords := numDataCodewords;
+end;
+
+destructor TDataBlock.Destroy;
+begin
+  Fcodewords := nil;
+  inherited;
+end;
+
+class function TDataBlock.getDataBlocks(const rawCodewords: TArray<Byte>;
+  const version: TVersion; const ecLevel: TErrorCorrectionLevel): TArray<TDataBlock>;
+var
+  numResultBlocks,
+  shorterBlocksTotalCodewords,
+  longerBlocksStartAt,
+  shorterBlocksNumDataCodewords,
+  max, i, j,
+  totalBlocks,
+  numBlockCodewords,
+  iOffset,
+  rawCodewordsOffset,
+  NumDataCodewords: Integer;
+  ecBlock: Tversion.TECB;
+  ecBlocks: Tversion.TECBlocks;
+  ecBlockArray: TArray<Tversion.TECB>;
+  numBlockCodewordsBytes: TArray<Byte>;
+
+begin
+  if (Length(rawCodewords) <> Version.TotalCodewords)
+  then
+     raise EArgumentException.Create('Invalid arguments');
+
+  // Figure out the number and size of data blocks used by this version and
+  // error correction level
+  ecBlocks := version.getECBlocksForLevel(ecLevel);
+
+  // First count the total number of data blocks
+  totalBlocks := 0;
+  ecBlockArray := ecBlocks.getECBlocks;
+
+  for ecBlock in ecBlockArray do
+    Inc(totalBlocks, ecBlock.Count);
+
+  // Now establish DataBlocks of the appropriate size and number of data codewords
+  Result := TArray<TDataBlock>.Create();
+  SetLength(result, totalBlocks);
+  numResultBlocks := 0;
+  for ecBlock in ecBlockArray do
+  begin
+    for i := 0 to Pred(ecBlock.count) do
+    begin
+      numDataCodewords := ecBlock.DataCodewords;
+      numBlockCodewords := ecBlocks.ECCodewordsPerBlock + numDataCodewords;
+
+      numBlockCodewordsBytes := TArray<Byte>.Create();
+      SetLength(numBlockCodewordsBytes, numBlockCodewords);
+
+      Result[numResultBlocks] := TDataBlock.Create(numBlockCodewordsBytes, numDataCodewords);
+      Inc(numResultBlocks);
+    end
+  end;
+
+  numBlockCodewordsBytes := nil;
+  // All blocks have the same amount of data, except that the last n
+  // (where n may be 0) have 1 more byte. Figure out where these start.
+  shorterBlocksTotalCodewords := Length(Result[0].codewords);
+  longerBlocksStartAt := Length(result) - 1;
+  while ((longerBlocksStartAt >= 0)) do
+  begin
+    if (Length(Result[longerBlocksStartAt].codewords) = shorterBlocksTotalCodewords)
+    then
+       break;
+    Dec(longerBlocksStartAt);
+  end;
+  Inc(longerBlocksStartAt);
+
+  shorterBlocksNumDataCodewords := (shorterBlocksTotalCodewords - ecBlocks.ECCodewordsPerBlock);
+  // The last elements of result may be 1 element longer;
+  // first fill out as many elements as all of them have
+  rawCodewordsOffset := 0;
+  for i := 0 to Pred(shorterBlocksNumDataCodewords) do
+  begin
+    for j := 0 to Pred(numResultBlocks) do
+    begin
+      Result[j].codewords[i] := rawCodewords[rawCodewordsOffset];
+      Inc(rawCodewordsOffset);
+    end;
+  end;
+  // Fill out the last data block in the longer ones
+  for j := longerBlocksStartAt to Pred(numResultBlocks) do
+  begin
+    result[j].codewords[shorterBlocksNumDataCodewords] :=
+      rawCodewords[rawCodewordsOffset];
+    Inc(rawCodewordsOffset);
+  end;
+  // Now add in error correction blocks
+  max := Length(result[0].codewords);
+
+  for i := shorterBlocksNumDataCodewords to Pred(max) do
+  begin
+    for j := 0 to Pred(numResultBlocks) do
+    begin
+      if (j < longerBlocksStartAt)
+      then
+         iOffset := i
+      else
+         iOffset := i + 1;
+
+      Result[j].codewords[iOffset] := rawCodewords[rawCodewordsOffset];
+      Inc(rawCodewordsOffset);
+    end;
+  end;
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.DataMask.pas

@@ -0,0 +1,226 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.DataMask;
+
+interface
+
+uses 
+  SysUtils, 
+  ZXing.Common.BitMatrix, 
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary> <p>Encapsulates data masks for the data bits in a QR code, per ISO 18004:2006 6.8. Implementations
+  /// of this class can un-mask a raw BitMatrix. For simplicity, they will unmask the entire BitMatrix,
+  /// including areas used for finder patterns, timing patterns, etc. These areas should be unused
+  /// after the point they are unmasked anyway.</p>
+  ///
+  /// <p>Note that the diagram in section 6.8.1 is misleading since it indicates that i is column position
+  /// and j is row position. In fact, as the text says, i is row position and j is column position.</p>
+  /// </summary>
+  TDataMask = class abstract
+  private
+    /// <summary> See ISO 18004:2006 6.8.1</summary>
+    class var DATA_MASKS: TArray<TDataMask>;
+
+    class procedure InitializeClass;
+    class procedure FinalizeClass;
+
+    function isMasked(const i, j: Integer): Boolean; virtual; abstract;
+  public
+    /// <param name="reference">a value between 0 and 7 indicating one of the eight possible
+    /// data mask patterns a QR Code may use
+    /// </param>
+    /// <returns> {@link DataMask} encapsulating the data mask pattern
+    /// </returns>
+    class function forReference(const reference: Integer): TDataMask; static;
+
+    /// <summary> <p>Implementations of this method reverse the data masking process applied to a QR Code and
+    /// make its bits ready to read.</p>
+    /// </summary>
+    /// <param name="bits">representation of QR Code bits
+    /// </param>
+    /// <param name="dimension">dimension of QR Code, represented by bits, being unmasked
+    /// </param>
+    procedure unmaskBitMatrix(const bits: TBitMatrix; const dimension: Integer);
+  end;
+
+  /// <summary> 000: mask bits for which (x + y) mod 2 == 0</summary>
+  TDataMask000 = class(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+  /// <summary> 001: mask bits for which x mod 2 == 0</summary>
+  TDataMask001 = class sealed(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+  /// <summary> 010: mask bits for which y mod 3 == 0</summary>
+  TDataMask010 = class sealed(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+  /// <summary> 011: mask bits for which (x + y) mod 3 == 0</summary>
+  TDataMask011 = class sealed(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+  /// <summary> 100: mask bits for which (x/2 + y/3) mod 2 == 0</summary>
+  TDataMask100 = class sealed(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+  /// <summary> 101: mask bits for which xy mod 2 + xy mod 3 == 0</summary>
+  TDataMask101 = class sealed(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+  /// <summary> 110: mask bits for which (xy mod 2 + xy mod 3) mod 2 == 0</summary>
+  TDataMask110 = class sealed(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+  /// <summary> 111: mask bits for which ((x+y)mod 2 + xy mod 3) mod 2 == 0</summary>
+  TDataMask111 = class sealed(TDataMask)
+  private
+    function isMasked(const i, j: Integer): Boolean; override;
+  end;
+
+implementation
+
+{ TDataMask }
+
+class procedure TDataMask.InitializeClass;
+begin
+  TDataMask.DATA_MASKS := TArray<TDataMask>.Create(TDataMask000.Create,
+                                                   TDataMask001.Create,
+                                                   TDataMask010.Create,
+                                                   TDataMask011.Create,
+                                                   TDataMask100.Create,
+                                                   TDataMask101.Create,
+                                                   TDataMask110.Create,
+                                                   TDataMask111.Create);
+end;
+
+class procedure TDataMask.FinalizeClass;
+var
+  dam: TDataMask;
+begin
+  for dam in TDataMask.DATA_MASKS do
+    dam.Free;
+  DATA_MASKS := nil;
+end;
+
+class function TDataMask.forReference(const reference: Integer): TDataMask;
+begin
+  if ((reference < 0) or (reference > 7))
+  then
+     raise EArgumentException.Create('Invalid arguments');
+
+  Result := TDataMask.DATA_MASKS[reference];
+end;
+
+procedure TDataMask.unmaskBitMatrix(const bits: TBitMatrix;
+  const dimension: Integer);
+var
+  i, j: Integer;
+begin
+  for i := 0 to Pred(dimension) do
+    for j := 0 to Pred(dimension) do
+      if (self.isMasked(i, j))
+      then
+         bits.flip(j, i);
+end;
+
+{ TDataMask000 }
+
+function TDataMask000.isMasked(const i, j: Integer): Boolean;
+begin
+  Result := ((i + j) and $01) = 0;
+end;
+
+{ TDataMask001 }
+
+function TDataMask001.isMasked(const i, j: Integer): Boolean;
+begin
+  Result := (i and $01) = 0;
+end;
+
+{ TDataMask010 }
+
+function TDataMask010.isMasked(const i, j: Integer): Boolean;
+begin
+  Result := (j mod 3) = 0;
+end;
+
+{ TDataMask011 }
+
+function TDataMask011.isMasked(const i, j: Integer): Boolean;
+begin
+  Result := (((i + j) mod 3) = 0)
+end;
+
+{ TDataMask100 }
+
+function TDataMask100.isMasked(const i, j: Integer): Boolean;
+begin
+   Result := (( TMathUtils.Asr(UInt32(i),1) + (j div 3)) and $01) = 0;
+end;
+
+{ TDataMask101 }
+
+function TDataMask101.isMasked(const i, j: Integer): Boolean;
+var
+  temp: Integer;
+begin
+  temp := (i * j);
+  Result := ((temp and $01) + (temp mod 3)) = 0;
+end;
+
+{ TDataMask110 }
+
+function TDataMask110.isMasked(const i, j: Integer): Boolean;
+var
+  temp: Integer;
+begin
+  temp := (i * j);
+  Result := (((temp and $01) + (temp mod 3)) and 1) = 0;
+end;
+
+{ TDataMask111 }
+
+function TDataMask111.isMasked(const i, j: Integer): Boolean;
+begin
+  Result := ((((i + j) and $01) + ((i * j) mod 3)) and $01) = 0;
+end;
+
+initialization
+  TDataMask.InitializeClass;
+finalization
+  TDataMask.FinalizeClass;
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.DecodedBitStreamParser.pas

@@ -0,0 +1,587 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.DecodedBitStreamParser;
+
+interface
+
+uses 
+  ZXing.BitSource,
+  SysUtils, 
+  ZXing.DecodeHintType,
+  Generics.Collections,
+  ZXing.QrCode.Internal.ErrorCorrectionLevel,
+  ZXing.QrCode.Internal.Version,
+  ZXing.DecoderResult,
+  ZXing.CharacterSetECI,
+  ZXing.StringUtils,
+  ZXing.ByteSegments,
+  ZXing.QrCode.Internal.Mode,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary> <p>QR Codes can encode text as bits in one of several modes, and can use multiple modes
+  /// in one QR Code. This class decodes the bits back into text.</p>
+  ///
+  /// <p>See ISO 18004:2006, 6.4.3 - 6.4.7</p>
+  /// </summary>
+  TDecodedBitStreamParser = class abstract
+  private
+    /// <summary>
+    /// See ISO 18004:2006, 6.4.4 Table 5
+    /// </summary>
+    class var ALPHANUMERIC_CHARS: TArray<Char>;
+
+    const
+      GB2312_SUBSET: Integer = 1;
+
+    class procedure InitializeClass;
+    class procedure FinalizeClass;
+
+    class function decodeAlphanumericSegment(const bits: TBitSource;
+      const res: TStringBuilder; count: Integer;
+      const fc1InEffect: Boolean): Boolean; static;
+
+    class function decodeByteSegment(const bits: TBitSource;
+      const res: TStringBuilder; count: Integer;
+      const currentCharacterSetECI: TCharacterSetECI;
+      const byteSegments: IByteSegments;
+      const hints: TDictionary<TDecodeHintType, TObject>): Boolean; static;
+
+    /// <summary>
+    /// See specification GBT 18284-2000
+    /// </summary>
+    /// <param name="bits">The bits.</param>
+    /// <param name="result">The result.</param>
+    /// <param name="count">The count.</param>
+    /// <returns></returns>
+    class function decodeHanziSegment(const bits: TBitSource;
+      const res: TStringBuilder; count: Integer): Boolean; static;
+
+    class function decodeKanjiSegment(const bits: TBitSource;
+      const res: TStringBuilder; count: Integer): boolean; static;
+
+    class function decodeNumericSegment(const bits: TBitSource;
+      const res: TStringBuilder; count: Integer): Boolean; static;
+
+    class function parseECIValue(const bits: TBitSource): Integer; static;
+    class function toAlphaNumericChar(const value: Integer): Char; static;
+  public
+    class function decode(const bytes: TArray<Byte>; const version: TVersion;
+      const ecLevel: TErrorCorrectionLevel;
+      const hints: TDictionary<TDecodeHintType, TObject>): TDecoderResult; static;
+  end;
+
+implementation
+
+{ TDecodedBitStreamParser }
+
+class procedure TDecodedBitStreamParser.InitializeClass;
+begin
+  ALPHANUMERIC_CHARS := TArray<Char>.Create('0', '1', '2', '3', '4', '5', '6',
+    '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L',
+    'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', ' ',
+    '$', '%', '*', '+', '-', '.', '/', ':');
+end;
+
+class procedure TDecodedBitStreamParser.FinalizeClass;
+begin
+  ALPHANUMERIC_CHARS := nil;
+end;
+
+class function TDecodedBitStreamParser.decode(const bytes: TArray<Byte>;
+  const version: TVersion; const ecLevel: TErrorCorrectionLevel;
+  const hints: TDictionary<TDecodeHintType, TObject>): TDecoderResult;
+var
+  Mode: TMode;
+  bits: TBitSource;
+  byteSegments: IByteSegments;
+  fc1InEffect: Boolean;
+  symbolSequence,
+  parityData,
+  count, value,
+  countHanzi, subSet: Integer;
+  currentCharacterSetECI: TCharacterSetECI;
+  ecstring,s: String;
+  res: TStringBuilder;
+begin
+  Result := nil;
+
+  bits := TBitSource.Create(bytes);
+  res := TStringBuilder.Create(50);
+  byteSegments := ByteSegmentsCreate();
+  byteSegments.Capacity := 1;
+  symbolSequence := -1;
+  parityData := -1;
+  try
+    try
+      currentCharacterSetECI := nil;
+      fc1InEffect := false;
+      repeat
+        // While still another segment to read...
+        if (bits.available < 4)
+        then
+           // OK, assume we're done. Really, a TERMINATOR mode should have been recorded here
+           Mode := TMode.TERMINATOR
+        else
+        begin
+          try
+            Mode := TMode.forBits(bits.readBits(4)); // mode is encoded by 4 bits
+          except
+            on E: EArgumentException do
+              exit;
+          end;
+        end;
+
+        if (Mode <> TMode.TERMINATOR) then
+        begin
+          if ((Mode = TMode.FNC1_FIRST_POSITION) or
+              (Mode = TMode.FNC1_SECOND_POSITION)) then
+          begin
+            // We do little with FNC1 except alter the parsed result a bit according to the spec
+            fc1InEffect := true;
+          end else
+          begin
+            if (Mode = TMode.STRUCTURED_APPEND) then
+            begin
+              if (bits.available() < 16)
+              then
+                 exit;
+              // not really supported; but sequence number and parity is added later to the result metadata
+              // Read next 8 bits (symbol sequence #) and 8 bits (parity data), then continue
+              symbolSequence := bits.readBits(8);
+              parityData := bits.readBits(8);
+            end else
+            begin
+              if (Mode = TMode.ECI) then
+              begin
+                // Count doesn't apply to ECI
+                value := parseECIValue(bits);
+                currentCharacterSetECI := TCharacterSetECI.getCharacterSetECIByValue(value);
+                if (currentCharacterSetECI = nil)
+                then
+                   exit;
+              end else
+              begin
+                // First handle Hanzi mode which does not start with character count
+                if (Mode = TMode.HANZI) then
+                begin
+                  // chinese mode contains a sub set indicator right after mode indicator
+                  subSet := bits.readBits(4);
+                  countHanzi := bits.readBits(Mode.getCharacterCountBits(version));
+                  if (subSet = GB2312_SUBSET) then
+                  begin
+                    if (not TDecodedBitStreamParser.decodeHanziSegment(bits,
+                      res, countHanzi))
+                    then
+                       exit;
+                  end;
+                end else
+                begin
+                  // "Normal" QR code modes:
+                  // How many characters will follow, encoded in this mode?
+                  count := bits.readBits(Mode.getCharacterCountBits(version));
+                  if (Mode = TMode.NUMERIC) then
+                  begin
+                    if (not TDecodedBitStreamParser.decodeNumericSegment(bits,
+                      res, count))
+                    then
+                       exit;
+                  end else
+                  begin
+                    if (Mode = TMode.ALPHANUMERIC) then
+                    begin
+                      if (not TDecodedBitStreamParser.
+                        decodeAlphanumericSegment(bits, res, count, fc1InEffect))
+                      then
+                         exit;
+                    end else
+                    begin
+                      if (Mode = TMode.BYTE) then
+                      begin
+                        if (not TDecodedBitStreamParser.
+                          decodeByteSegment(bits, res, count,
+                          currentCharacterSetECI, byteSegments, hints))
+                        then
+                           exit;
+                      end else
+                      begin
+                        if (Mode <> TMode.KANJI) then
+                        begin
+                          if (not TDecodedBitStreamParser.
+                            decodeKanjiSegment(bits, res, count))
+                          then
+                             exit;
+                        end else exit;
+                      end;
+                    end;
+                  end;
+                end;
+              end;
+            end;
+          end;
+        end;
+        until (Mode = TMode.TERMINATOR)
+      except
+        on E: EArgumentException do
+          exit;
+      end;
+
+      if (byteSegments.count = 0)
+      then
+         byteSegments := nil;
+
+      if (ecLevel = nil)
+      then
+         ecstring := ''
+      else
+         ecstring := ecLevel.toString();
+
+      s:= res.toString.Replace(#13+#10, #10).Replace(#10, #13);
+      Result := TDecoderResult.Create(bytes, s, byteSegments, ecstring, symbolSequence,
+        parityData);
+    finally
+     // FreeAndNil(byteSegments);
+
+      res.Clear();
+
+      FreeAndNil(res);
+      FreeAndNil(bits);
+    end;
+
+  end;
+
+class function TDecodedBitStreamParser.decodeAlphanumericSegment(
+  const bits: TBitSource; const res: TStringBuilder; count: Integer;
+  const fc1InEffect: Boolean): Boolean;
+var
+  start, i, nextTwoCharsBits: Integer;
+  charArray: TArray<Char>;
+begin
+  Result := false;
+  // Read two characters at a time
+  start := res.Length;
+  while ((count > 1)) do
+  begin
+    if (bits.available < 11)
+    then
+       exit;
+
+    nextTwoCharsBits := bits.readBits(11);
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar
+      ((nextTwoCharsBits div 45)));
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar
+      ((nextTwoCharsBits mod 45)));
+    Dec(count, 2);
+  end;
+
+  if (count = 1) then
+  begin
+    // special case: one character left
+    if (bits.available < 6)
+    then
+       exit;
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar(bits.readBits(6)))
+  end;
+
+  // See section 6.4.8.1, 6.4.8.2
+  if (fc1InEffect) then
+  begin
+    // We need to massage the result a bit if in an FNC1 mode:
+    for i := start to Pred(res.Length) do
+    begin
+      if (res.Chars[i] = '%') then
+      begin
+        if ((i < (res.Length - 1)) and (res.Chars[(i + 1)] = '%'))
+        then
+           // %% is rendered as %
+           res.Remove((i + 1), 1)
+        else
+        begin
+          // In alpha mode, % should be converted to FNC1 separator 0x1D
+          res.Remove(i, 1);
+          charArray := TArray<Char>.Create(Char($1D));
+          res.Insert(i, charArray);
+        end;
+      end;
+    end;
+  end;
+
+  Result := true;
+end;
+
+class function TDecodedBitStreamParser.decodeByteSegment(const bits: TBitSource;
+  const res: TStringBuilder; count: Integer;
+  const currentCharacterSetECI: TCharacterSetECI;
+  const byteSegments: IByteSegments;
+  const hints: TDictionary<TDecodeHintType, TObject>): Boolean;
+var
+  Enc:TEncoding;
+  encodingS, s: string;
+  readBytes: TArray<Byte>;
+  i: Integer;
+begin
+  Result := false;
+  // Don't crash trying to read more bits than we have available.
+  if ((count shl 3) > bits.available)
+  then
+     exit;
+
+  readBytes := TArray<Byte>.Create();
+  SetLength(readBytes, count);
+  for i := 0 to Pred(count) do
+    readBytes[i] := Byte(bits.readBits(8));
+
+  if (currentCharacterSetECI = nil)
+  then
+     // The spec isn't clear on this mode; see
+     // section 6.4.5: t does not say which encoding to assuming
+     // upon decoding. I have seen ISO-8859-1 used as well as
+     // Shift_JIS -- without anything like an ECI designator to
+     // give a hint.
+     encodingS := TStringUtils.guessEncoding(readBytes, hints)
+  else
+     encodingS := currentCharacterSetECI.EncodingName;
+
+  try
+    enc := TEncoding.GetEncoding(encodingS);
+    try
+      s := enc.GetString(readBytes, 0, Length(readBytes));
+      res.Append(s);
+    finally
+      FreeAndNil(enc);
+    end;
+  except
+    on E: Exception do
+      exit;
+  end;
+
+  byteSegments.Add(readBytes);
+  result := true;
+end;
+
+class function TDecodedBitStreamParser.decodeHanziSegment(
+  const bits: TBitSource; const res: TStringBuilder; count: Integer): Boolean;
+var
+  buffer: TArray<Byte>;
+  offset, twoBytes,
+  assembledTwoBytes: Integer;
+begin
+  Result := false;
+  // Don't crash trying to read more bits than we have available.
+  if ((count * 13) > bits.available)
+  then
+     exit;
+
+  // Each character will require 2 bytes. Read the characters as 2-byte pairs
+  // and decode as GB2312 afterwards
+  buffer := TArray<Byte>.Create();
+  SetLength(buffer, 2 * count);
+  offset := 0;
+
+  while ((count > 0)) do
+  begin
+    // Each 13 bits encodes a 2-byte character
+    twoBytes := bits.readBits(13);
+    assembledTwoBytes := (((twoBytes div $60) shl 8) or (twoBytes mod $60));
+    if (assembledTwoBytes < $00A00)
+    then
+       // In the 0xA1A1 to 0xAAFE range
+       Inc(assembledTwoBytes, $0A1A1)
+    else
+       // In the 0xB0A1 to 0xFAFE range
+       Inc(assembledTwoBytes, $0A6A1);
+
+    buffer[offset] := Byte(TMathUtils.Asr(assembledTwoBytes, 8) and $FF);
+    buffer[(offset + 1)] := Byte(assembledTwoBytes and $FF);
+    Inc(offset, 2);
+    Dec(count);
+  end;
+
+  try
+    res.Append(Tencoding.GetEncoding(TStringUtils.GB2312).GetString(buffer, 0,
+      Length(buffer)))
+  except
+    on E: Exception do
+      exit;
+ end;
+ Result := true;
+end;
+
+class function TDecodedBitStreamParser.decodeKanjiSegment(
+  const bits: TBitSource; const res: TStringBuilder; count: Integer): Boolean;
+var
+  buffer: TArray<Byte>;
+  twoBytes, offset,
+  assembledTwoBytes: Integer;
+begin
+  Result := false;
+  // Don't crash trying to read more bits than we have available.
+  if ((count * 13) > bits.available)
+  then
+     exit;
+
+  // Each character will require 2 bytes. Read the characters as 2-byte pairs
+  // and decode as Shift_JIS afterwards
+  buffer := TArray<Byte>.Create();
+  SetLength(buffer, 2 * count);
+  offset := 0;
+
+  while ((count > 0)) do
+  begin
+    // Each 13 bits encodes a 2-byte character
+    twoBytes := bits.readBits(13);
+    assembledTwoBytes := (((twoBytes div $0C0) shl 8) or (twoBytes mod $0C0));
+    if (assembledTwoBytes < $1F00)
+    then
+       // In the 0x8140 to 0x9FFC range
+       Inc(assembledTwoBytes, $08140)
+    else
+       Inc(assembledTwoBytes, $0C140);
+    buffer[offset] := Byte( TMathUtils.Asr(assembledTwoBytes,8));
+    buffer[(offset + 1)] := Byte(assembledTwoBytes);
+    Inc(offset, 2);
+    Dec(count);
+  end;
+
+  try
+    res.Append(Tencoding.GetEncoding(TStringUtils.SHIFT_JIS).GetString(buffer,
+      0, Length(buffer)))
+  except
+    on E: Exception do
+      exit;
+  end;
+  Result := true;
+end;
+
+class function TDecodedBitStreamParser.decodeNumericSegment(
+  const bits: TBitSource; const res: TStringBuilder; count: Integer): Boolean;
+var
+  threeDigitsBits,
+  twoDigitsBits,
+  digitBits: Integer;
+begin
+  Result := false;
+  // Read three digits at a time
+  while ((count >= 3)) do
+  begin
+    if (bits.available < 10)
+    then
+       exit;
+    threeDigitsBits := bits.readBits(10);
+    if (threeDigitsBits >= 1000)
+    then
+       exit;
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar
+      ((threeDigitsBits div 100)));
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar
+      (((threeDigitsBits div 10) mod 10)));
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar
+      ((threeDigitsBits mod 10)));
+    Dec(count, 3)
+  end;
+
+  if (count = 2) then
+  begin
+    // Two digits left over to read, encoded in 7 bits
+    if (bits.available < 7)
+    then
+       exit;
+
+    twoDigitsBits := bits.readBits(7);
+    if (twoDigitsBits >= 100)
+    then
+       exit;
+
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar
+      ((twoDigitsBits div 10)));
+    res.Append(TDecodedBitStreamParser.toAlphaNumericChar
+      ((twoDigitsBits mod 10)));
+  end else
+  begin
+    if (count = 1) then
+    begin
+      // One digit left over to read
+      if (bits.available < 4)
+      then
+         exit;
+
+      digitBits := bits.readBits(4);
+      if (digitBits >= 10)
+      then
+         exit;
+
+      res.Append(TDecodedBitStreamParser.toAlphaNumericChar(digitBits))
+    end;
+  end;
+
+  Result := true;
+end;
+
+class function TDecodedBitStreamParser.parseECIValue(
+  const bits: TBitSource): Integer;
+var
+  firstByte,
+  secondByte,
+  SecondThirdBytes: Integer;
+begin
+  firstByte := bits.readBits(8);
+
+  if ((firstByte and $80) = 0) then
+  begin
+    // just one byte
+    Result := (firstByte and $7F);
+    exit;
+  end;
+
+  if ((firstByte and $C0) = $80) then
+  begin
+    // two bytes
+    secondByte := bits.readBits(8);
+    Result := (((firstByte and $3F) shl 8) or secondByte);
+    exit;
+  end;
+
+  if ((firstByte and $E0) = $C0) then
+  begin
+    // three bytes
+    SecondThirdBytes := bits.readBits(16);
+    Result := (((firstByte and $1F) shl 16) or SecondThirdBytes);
+    exit;
+  end;
+
+  raise EArgumentException.Create('Bad ECI bits starting with byte ' +
+     firstByte.toString());
+end;
+
+class function TDecodedBitStreamParser.toAlphaNumericChar(
+  const value: Integer): Char;
+begin
+  if (value >= Length(ALPHANUMERIC_CHARS))
+  then
+     raise Exception.Create('Format exception');
+
+  Result := ALPHANUMERIC_CHARS[value];
+end;
+
+initialization
+  TDecodedBitStreamParser.InitializeClass;
+finalization
+  TDecodedBitStreamParser.FinalizeClass;
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.Decoder.pas

@@ -0,0 +1,278 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E.Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.Decoder;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  ZXing.DecodeHintType,
+  ZXing.Common.BitMatrix,
+  ZXing.QrCode.Internal.BitMatrixParser,
+  ZXing.DecoderResult,
+  ZXing.Common.ReedSolomon.ReedSolomonDecoder,
+  ZXing.Common.ReedSolomon.GenericGF,
+  ZXing.QrCode.Internal.QRCodeDecoderMetaData,
+  ZXing.QrCode.Internal.Version,
+  ZXing.QrCode.Internal.FormatInformation,
+  ZXing.QrCode.Internal.ErrorCorrectionLevel,
+  ZXing.QrCode.Internal.DataBlock,
+  ZXing.QrCode.Internal.DecodedBitStreamParser;
+
+type
+  /// <summary>
+  /// <p>The main class which implements QR Code decoding -- as opposed to locating and extracting
+  /// the QR Code from an image.</p>
+  /// </summary>
+  TQRDecoder = class
+  private
+    rsDecoder: TReedSolomonDecoder;
+    /// <summary>
+    /// <p>Given data and error-correction codewords received, possibly corrupted by errors, attempts to
+    /// correct the errors in-place using Reed-Solomon error correction.</p>
+    /// </summary>
+    /// <param name="codewordBytes">data and error correction codewords</param>
+    /// <param name="numDataCodewords">number of codewords that are data bytes</param>
+    /// <returns></returns>
+    function correctErrors(const codewordBytes: TArray<Byte>;
+      const numDataCodewords: Integer): Boolean;
+
+    function decode(const parser: TBitMatrixParser;
+      const hints: TDictionary<TDecodeHintType, TObject>)
+      : TDecoderResult; overload;
+  public
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Decoder"/> class.
+    /// </summary>
+    constructor Create;
+    destructor Destroy; override;
+
+    /// <summary>
+    /// <p>Convenience method that can decode a QR Code represented as a 2D array of booleans.
+    /// "true" is taken to mean a black module.</p>
+    /// </summary>
+    /// <param name="image">booleans representing white/black QR Code modules</param>
+    /// <param name="hints">decoding hints that should be used to influence decoding</param>
+    /// <returns>
+    /// text and bytes encoded within the QR Code
+    /// </returns>
+    function decode(const image: TArray<TArray<Boolean>>;
+      const hints: TDictionary<TDecodeHintType, TObject>)
+      : TDecoderResult; overload;
+
+    /// <summary>
+    /// <p>Decodes a QR Code represented as a {@link BitMatrix}. A 1 or "true" is taken to mean a black module.</p>
+    /// </summary>
+    /// <param name="bits">booleans representing white/black QR Code modules</param>
+    /// <param name="hints">decoding hints that should be used to influence decoding</param>
+    /// <returns>
+    /// text and bytes encoded within the QR Code
+    /// </returns>
+    function decode(const bits: TBitMatrix;
+      const hints: TDictionary<TDecodeHintType, TObject>)
+      : TDecoderResult; overload;
+  end;
+
+implementation
+
+{ TQRDecoder }
+constructor TQRDecoder.Create;
+begin
+  rsDecoder := TReedSolomonDecoder.Create(TGenericGF.QR_CODE_FIELD_256);
+end;
+
+destructor TQRDecoder.Destroy;
+begin
+  FreeAndNil(rsDecoder);
+  inherited;
+end;
+
+function TQRDecoder.correctErrors(const codewordBytes: TArray<Byte>;
+  const numDataCodewords: Integer): Boolean;
+var
+  i, numCodewords, numECCodewords: Integer;
+  codewordsInts: TArray<Integer>;
+begin
+  Result := false;
+
+  numCodewords := Length(codewordBytes);
+  // First read into an array of ints
+  codewordsInts := TArray<Integer>.Create();
+  SetLength(codewordsInts, numCodewords);
+  for i := 0 to Pred(numCodewords) do
+    codewordsInts[i] := (codewordBytes[i] and $FF);
+  numECCodewords := Length(codewordBytes) - numDataCodewords;
+
+  if (not rsDecoder.decode(codewordsInts, numECCodewords)) then
+    exit;
+
+  // Copy back into array of bytes -- only need to worry about the bytes that were data
+  // We don't care about errors in the error-correction codewords
+  for i := 0 to Pred(numDataCodewords) do
+    codewordBytes[i] := Byte(codewordsInts[i]);
+
+  Result := true;
+end;
+
+function TQRDecoder.decode(const image: TArray<TArray<Boolean>>;
+  const hints: TDictionary<TDecodeHintType, TObject>): TDecoderResult;
+var
+  dimension, i, j: Integer;
+  bits: TBitMatrix;
+begin
+  dimension := Length(image);
+  bits := TBitMatrix.Create(dimension);
+  try
+    for i := 0 to Pred(dimension) do
+      for j := 0 to Pred(dimension) do
+        bits[j, i] := image[i][j];
+
+    Result := decode(bits, hints);
+  finally
+    bits.Free;
+  end;
+end;
+
+function TQRDecoder.decode(const bits: TBitMatrix;
+  const hints: TDictionary<TDecodeHintType, TObject>): TDecoderResult;
+var
+  parser: TBitMatrixParser;
+begin
+  Result := nil;
+
+  // Construct a parser and read version, error-correction level
+  parser := TBitMatrixParser.createBitMatrixParser(bits);
+  if Assigned(parser) then
+  begin
+    try
+      Result := decode(parser, hints);
+      if (Result = nil) then
+      begin
+        // Revert the bit matrix
+        parser.remask;
+
+        // Will be attempting a mirrored reading of the version and format info.
+        parser.setMirror(true);
+
+        // Preemptively read the version.
+        if (parser.readVersion = nil) then
+          exit;
+
+        // Preemptively read the format information.
+        if (parser.readFormatInformation = nil) then
+          exit;
+
+        (*
+          * Since we're here, this means we have successfully detected some kind
+          * of version and format information when mirrored. This is a good sign,
+          * that the QR code may be mirrored, and we should try once more with a
+          * mirrored content.
+        *)
+        // Prepare for a mirrored reading.
+        parser.mirror;
+
+        Result := decode(parser, hints);
+
+        if (Result <> nil) then
+          // Success! Notify the caller that the code was mirrored.
+          Result.Other := TQRCodeDecoderMetaData.Create(true);
+      end;
+    finally
+      parser.Free;
+    end;
+  end;
+end;
+
+function TQRDecoder.decode(const parser: TBitMatrixParser;
+  const hints: TDictionary<TDecodeHintType, TObject>): TDecoderResult;
+var
+  DataBlock: TDataBlock;
+  dataBlocks: TArray<TDataBlock>;
+  Version: TVersion;
+  formatInfo: TFormatInformation;
+  ecLevel: TErrorCorrectionLevel;
+  codeWords, resultBytes, codewordBytes: TArray<Byte>;
+  totalBytes, resultOffset, i, numDataCodewords: Integer;
+begin
+  Result := nil;
+
+  Version := parser.readVersion;
+  if (Version = nil) then
+    exit;
+
+  formatInfo := parser.readFormatInformation;
+  if (formatInfo = nil) then
+    exit;
+
+  ecLevel := formatInfo.ErrorCorrectionLevel;
+
+  // Read codewords
+  codeWords := parser.readCodewords;
+  if (codeWords = nil) then
+  begin
+    FreeAndNil(formatInfo);
+    exit;
+  end;
+
+  // Separate into data blocks
+  dataBlocks := TDataBlock.getDataBlocks(codeWords, Version, ecLevel);
+
+  // Count total number of data bytes
+  totalBytes := 0;
+  for DataBlock in dataBlocks do
+    Inc(totalBytes, DataBlock.numDataCodewords);
+
+  resultBytes := TArray<Byte>.Create();
+  SetLength(resultBytes, totalBytes);
+  try
+
+    resultOffset := 0;
+
+    // Error-correct and copy data blocks together into a stream of bytes
+    for DataBlock in dataBlocks do
+    begin
+      codewordBytes := DataBlock.codeWords;
+      numDataCodewords := DataBlock.numDataCodewords;
+      if (not self.correctErrors(codewordBytes, numDataCodewords)) then
+      begin
+        exit(nil);
+      end;
+
+      for i := 0 to Pred(numDataCodewords) do
+      begin
+        resultBytes[resultOffset] := codewordBytes[i];
+        Inc(resultOffset);
+      end;
+    end;
+
+    // Decode the contents of that stream of bytes
+    Result := TDecodedBitStreamParser.decode(resultBytes, Version,
+      ecLevel, hints);
+
+  finally
+    for DataBlock in dataBlocks do
+      DataBlock.Free;
+    FreeAndNil(formatInfo);
+  end;
+
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.ErrorCorrectionLevel.pas

@@ -0,0 +1,149 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.ErrorCorrectionLevel;
+
+interface
+
+uses SysUtils;
+
+type
+  /// <summary>
+  /// <p>See ISO 18004:2006, 6.5.1. This enum encapsulates the four error correction levels
+  /// defined by the QR code standard.</p>
+  /// </summary>
+  TErrorCorrectionLevel = class sealed
+  private
+    Fbits: Integer;
+    Fname: string;
+    Fordinal_Renamed_Field: Integer;
+    class var FOR_BITS: TArray<TErrorCorrectionLevel>;
+
+    class procedure InitalizeClass; static;
+    class procedure FinalizeClass; static;
+  public
+    constructor Create(const ordinal, bits: Integer; const name: String);
+
+    /// <summary>
+    /// Fors the bits.
+    /// </summary>
+    /// <param name="bits">int containing the two bits encoding a QR Code's error correction level</param>
+    /// <returns>
+    ///   <see cref="ErrorCorrectionLevel"/> representing the encoded error correction level
+    /// </returns>
+    class function forBits(const bits: Integer): TErrorCorrectionLevel; static;
+
+    /// <summary> L = ~7% correction</summary>
+    class var L: TErrorCorrectionLevel;
+
+    /// <summary> M = ~15% correction</summary>
+    class var M: TErrorCorrectionLevel;
+
+    /// <summary> Q = ~25% correction</summary>
+    class var Q: TErrorCorrectionLevel;
+
+    /// <summary> H = ~30% correction</summary>
+    class var H: TErrorCorrectionLevel;
+
+    /// <summary>
+    /// Ordinals this instance.
+    /// </summary>
+    /// <returns></returns>
+    function ordinal: Integer;
+
+    /// <summary>
+    /// Returns a <see cref="System.String"/> that represents this instance.
+    /// </summary>
+    /// <returns>
+    /// A <see cref="System.String"/> that represents this instance.
+    /// </returns>
+    function ToString: String; override;
+
+    /// <summary>
+    /// Gets the bits.
+    /// </summary>
+    property Bits: Integer read Fbits;
+
+    /// <summary>
+    /// Gets the name.
+    /// </summary>
+    property Name: String read Fname;
+  end;
+
+implementation
+
+{ TErrorCorrectionLevel }
+
+constructor TErrorCorrectionLevel.Create(const ordinal, bits: Integer;
+  const name: String);
+begin
+  Fordinal_Renamed_Field := ordinal;
+  Fbits := bits;
+  Fname := name
+end;
+
+class procedure TErrorCorrectionLevel.InitalizeClass;
+begin
+  H := TErrorCorrectionLevel.Create(3, 2, 'H');
+  L := TErrorCorrectionLevel.Create(0, 1, 'L');
+  M := TErrorCorrectionLevel.Create(1, 0, 'M');
+  Q := TErrorCorrectionLevel.Create(2, 3, 'Q');
+
+  FOR_BITS := TArray<TErrorCorrectionLevel>.Create(M, L, H, Q);
+end;
+
+class procedure TErrorCorrectionLevel.FinalizeClass;
+begin
+  H.FOR_BITS := nil;
+  L.FOR_BITS := nil;
+  M.FOR_BITS := nil;
+  Q.FOR_BITS := nil;
+
+  FreeAndNil(H);
+  FreeAndNil(L);
+  FreeAndNil(M);
+  FreeAndNil(Q);
+  FOR_BITS := nil;
+end;
+
+class function TErrorCorrectionLevel.forBits(const bits: Integer): TErrorCorrectionLevel;
+begin
+  if ((bits < 0) or
+      (bits >= Length(TErrorCorrectionLevel.FOR_BITS)))
+  then
+     raise EArgumentException.Create('Invalid argument');
+
+  Result := TErrorCorrectionLevel.FOR_BITS[bits];
+end;
+
+function TErrorCorrectionLevel.ordinal: Integer;
+begin
+  Result := Fordinal_Renamed_Field;
+end;
+
+function TErrorCorrectionLevel.ToString: string;
+begin
+  Result := Fname
+end;
+
+initialization
+  TErrorCorrectionLevel.InitalizeClass;
+finalization
+  TErrorCorrectionLevel.FinalizeClass;
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.FormatInformation.pas

@@ -0,0 +1,256 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.FormatInformation;
+
+interface
+
+uses
+  Generics.Collections,
+  ZXing.QrCode.Internal.ErrorCorrectionLevel,
+  Classes,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary> <p>Encapsulates a QR Code's format information, including the data mask used and
+  /// error correction level.</p>
+  ///
+  /// </summary>
+  /// <seealso cref="TDataMask">
+  /// </seealso>
+  /// <seealso cref="TErrorCorrectionLevel">
+  /// </seealso>
+  TFormatInformation = class sealed
+  private
+    FErrorCorrectionLevel: TErrorCorrectionLevel;
+    FDataMask: Byte;
+
+  const
+    FORMAT_INFO_MASK_QR: Integer = $5412;
+
+    /// <summary> See ISO 18004:2006, Annex C, Table C.1</summary>
+    class var FORMAT_INFO_DECODE_LOOKUP: TArray<TArray<Integer>>;
+
+    /// <summary> Offset i holds the number of 1 bits in the binary representation of i</summary>
+    class var BITS_SET_IN_HALF_BYTE: TArray<Integer>;
+
+    class procedure InitializeClass; static;
+    class procedure FinalizeClass; static;
+
+    class function doDecodeFormatInformation(const maskedFormatInfo1,
+      maskedFormatInfo2: Integer): TFormatInformation; static;
+  public
+    constructor Create(const formatInfo: Integer);
+
+    function Equals(o: TObject): Boolean; override;
+    function GetHashCode: Integer; override;
+    class function numBitsDiffering(a, b: Integer): Integer; static;
+
+    /// <summary>
+    /// Decodes the format information.
+    /// </summary>
+    /// <param name="maskedFormatInfo1">format info indicator, with mask still applied</param>
+    /// <param name="maskedFormatInfo2">The masked format info2.</param>
+    /// <returns>
+    /// information about the format it specifies, or <code>null</code>
+    /// if doesn't seem to match any known pattern
+    /// </returns>
+    class function decodeFormatInformation(const maskedFormatInfo1,
+      maskedFormatInfo2: Integer): TFormatInformation; static;
+
+    property ErrorCorrectionLevel: TErrorCorrectionLevel
+      read FErrorCorrectionLevel;
+    property DataMask: Byte read FDataMask;
+  end;
+
+implementation
+
+{ TFormatInformation }
+
+constructor TFormatInformation.Create(const formatInfo: Integer);
+begin
+  // Bits 3,4
+  FErrorCorrectionLevel := TErrorCorrectionLevel.forBits
+    (TMathUtils.Asr(formatInfo, 3) and $03);
+  // Bottom 3 bits
+  FDataMask := Byte(formatInfo and 7);
+end;
+
+class function TFormatInformation.decodeFormatInformation
+  (const maskedFormatInfo1, maskedFormatInfo2: Integer): TFormatInformation;
+var
+  formatInfo: TFormatInformation;
+begin
+  formatInfo := doDecodeFormatInformation(maskedFormatInfo1, maskedFormatInfo2);
+
+  if (formatInfo <> nil) then
+    Result := formatInfo
+  else
+    // Should return null, but, some QR codes apparently
+    // do not mask this info. Try again by actually masking the pattern
+    // first
+    Result := TFormatInformation.doDecodeFormatInformation
+      ((maskedFormatInfo1 xor FORMAT_INFO_MASK_QR),
+      (maskedFormatInfo2 xor FORMAT_INFO_MASK_QR));
+end;
+
+class function TFormatInformation.doDecodeFormatInformation
+  (const maskedFormatInfo1, maskedFormatInfo2: Integer): TFormatInformation;
+var
+  bestDifference, bestFormatInfo, bitsDifference, targetInfo: Integer;
+  decodeInfo: TArray<Integer>;
+begin
+  Result := nil;
+
+  // Find the int in FORMAT_INFO_DECODE_LOOKUP with fewest bits differing
+  bestDifference := High(Integer);
+  bestFormatInfo := 0;
+
+  for decodeInfo in FORMAT_INFO_DECODE_LOOKUP do
+  begin
+    targetInfo := decodeInfo[0];
+    if ((targetInfo = maskedFormatInfo1) or (targetInfo = maskedFormatInfo2))
+    then
+    begin
+      // Found an exact match
+      Result := TFormatInformation.Create(decodeInfo[1]);
+      exit;
+    end;
+
+    bitsDifference := numBitsDiffering(maskedFormatInfo1, targetInfo);
+    if (bitsDifference < bestDifference) then
+    begin
+      bestFormatInfo := decodeInfo[1];
+      bestDifference := bitsDifference;
+    end;
+
+    if (maskedFormatInfo1 <> maskedFormatInfo2) then
+    begin
+      // also try the other option
+      bitsDifference := numBitsDiffering(maskedFormatInfo2, targetInfo);
+      if (bitsDifference < bestDifference) then
+      begin
+        bestFormatInfo := decodeInfo[1];
+        bestDifference := bitsDifference;
+      end;
+    end;
+  end;
+  // Hamming distance of the 32 masked codes is 7, by construction, so <= 3 bits
+  // differing means we found a match
+  if (bestDifference <= 3) then
+  begin
+    Result := TFormatInformation.Create(bestFormatInfo);
+    exit;
+  end;
+end;
+
+function TFormatInformation.Equals(o: TObject): Boolean;
+var
+  other: TFormatInformation;
+begin
+  Result := false;
+  if (not(o is TFormatInformation)) then
+    exit;
+
+  other := TFormatInformation(o);
+  Result := ((FErrorCorrectionLevel = other.ErrorCorrectionLevel) and
+    (FDataMask = other.DataMask));
+end;
+
+function TFormatInformation.GetHashCode: Integer;
+begin
+  Result := ((FErrorCorrectionLevel.ordinal shl 3) or FDataMask)
+end;
+
+class procedure TFormatInformation.InitializeClass;
+begin
+  SetLength(FORMAT_INFO_DECODE_LOOKUP, $20);
+
+  FORMAT_INFO_DECODE_LOOKUP[0] := TArray<Integer>.Create($5412, 0);
+  FORMAT_INFO_DECODE_LOOKUP[1] := TArray<Integer>.Create($5125, 1);
+  FORMAT_INFO_DECODE_LOOKUP[2] := TArray<Integer>.Create($5E7C, 2);
+  FORMAT_INFO_DECODE_LOOKUP[3] := TArray<Integer>.Create($5B4B, 3);
+  FORMAT_INFO_DECODE_LOOKUP[4] := TArray<Integer>.Create($45F9, 4);
+  FORMAT_INFO_DECODE_LOOKUP[5] := TArray<Integer>.Create($40CE, 5);
+  FORMAT_INFO_DECODE_LOOKUP[6] := TArray<Integer>.Create($4F97, 6);
+  FORMAT_INFO_DECODE_LOOKUP[7] := TArray<Integer>.Create($4AA0, 7);
+  FORMAT_INFO_DECODE_LOOKUP[8] := TArray<Integer>.Create($77C4, 8);
+  FORMAT_INFO_DECODE_LOOKUP[9] := TArray<Integer>.Create($72F3, 9);
+  FORMAT_INFO_DECODE_LOOKUP[10] := TArray<Integer>.Create($7DAA, 10);
+  FORMAT_INFO_DECODE_LOOKUP[11] := TArray<Integer>.Create($789D, 11);
+  FORMAT_INFO_DECODE_LOOKUP[12] := TArray<Integer>.Create($662F, 12);
+  FORMAT_INFO_DECODE_LOOKUP[13] := TArray<Integer>.Create($6318, 13);
+  FORMAT_INFO_DECODE_LOOKUP[14] := TArray<Integer>.Create($6C41, 14);
+  FORMAT_INFO_DECODE_LOOKUP[15] := TArray<Integer>.Create($6976, 15);
+  FORMAT_INFO_DECODE_LOOKUP[$10] := TArray<Integer>.Create($1689, $10);
+  FORMAT_INFO_DECODE_LOOKUP[$11] := TArray<Integer>.Create($13BE, $11);
+  FORMAT_INFO_DECODE_LOOKUP[$12] := TArray<Integer>.Create($1CE7, $12);
+  FORMAT_INFO_DECODE_LOOKUP[$13] := TArray<Integer>.Create($19D0, $13);
+  FORMAT_INFO_DECODE_LOOKUP[20] := TArray<Integer>.Create($762, 20);
+  FORMAT_INFO_DECODE_LOOKUP[$15] := TArray<Integer>.Create($255, $15);
+  FORMAT_INFO_DECODE_LOOKUP[$16] := TArray<Integer>.Create($D0C, $16);
+  FORMAT_INFO_DECODE_LOOKUP[$17] := TArray<Integer>.Create($83B, $17);
+  FORMAT_INFO_DECODE_LOOKUP[$18] := TArray<Integer>.Create($355F, $18);
+  FORMAT_INFO_DECODE_LOOKUP[$19] := TArray<Integer>.Create($3068, $19);
+  FORMAT_INFO_DECODE_LOOKUP[$1A] := TArray<Integer>.Create($3F31, $1A);
+  FORMAT_INFO_DECODE_LOOKUP[$1B] := TArray<Integer>.Create($3A06, $1B);
+  FORMAT_INFO_DECODE_LOOKUP[$1C] := TArray<Integer>.Create($24B4, $1C);
+  FORMAT_INFO_DECODE_LOOKUP[$1D] := TArray<Integer>.Create($2183, $1D);
+  FORMAT_INFO_DECODE_LOOKUP[30] := TArray<Integer>.Create($2EDA, 30);
+  FORMAT_INFO_DECODE_LOOKUP[$1F] := TArray<Integer>.Create($2BED, $1F);
+
+  BITS_SET_IN_HALF_BYTE := TArray<Integer>.Create(0, 1, 1, 2, 1, 2, 2, 3, 1, 2,
+    2, 3, 2, 3, 3, 4);
+end;
+
+class procedure TFormatInformation.FinalizeClass;
+var
+  i: Integer;
+begin
+  for i := 0 to Pred(Length(FORMAT_INFO_DECODE_LOOKUP)) do
+    FORMAT_INFO_DECODE_LOOKUP[i] := nil;
+
+  FORMAT_INFO_DECODE_LOOKUP := nil;
+  BITS_SET_IN_HALF_BYTE := nil;
+end;
+
+class function TFormatInformation.numBitsDiffering(a, b: Integer): Integer;
+begin
+  a := (a xor b); // a now has a 1 bit exactly where its bit differs with b's
+  // Count bits set quickly with a series of lookups:
+  Result := BITS_SET_IN_HALF_BYTE[(a and $0F)] + BITS_SET_IN_HALF_BYTE
+    [TMathUtils.Asr(UInt32(a), 4) and $0F] + BITS_SET_IN_HALF_BYTE
+    [TMathUtils.Asr(UInt32(a), 8) and $0F] + BITS_SET_IN_HALF_BYTE
+    [TMathUtils.Asr(UInt32(a), 12) and $0F] + BITS_SET_IN_HALF_BYTE
+    [TMathUtils.Asr(UInt32(a), 16) and $0F] + BITS_SET_IN_HALF_BYTE
+    [TMathUtils.Asr(UInt32(a), 20) and $0F] + BITS_SET_IN_HALF_BYTE
+    [TMathUtils.Asr(UInt32(a), 24) and $0F] + BITS_SET_IN_HALF_BYTE
+    [TMathUtils.Asr(UInt32(a), 28) and $0F];
+end;
+
+initialization
+
+TFormatInformation.InitializeClass;
+
+finalization
+
+TFormatInformation.FinalizeClass;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.Mode.pas

@@ -0,0 +1,248 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E.Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.Mode;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.QrCode.Internal.Version;
+
+type
+  /// <summary>
+  /// <p>See ISO 18004:2006, 6.4.1, Tables 2 and 3. This enum encapsulates the various modes in which
+  /// data can be encoded to bits in the QR code standard.</p>
+  /// </summary>
+  TMode = class sealed
+  private
+    Fbits : Integer;
+    Fname : String;
+    characterCountBitsForVersions: TArray<Integer>;
+
+    class procedure InitializeClass; static;
+    class procedure FinalizeClass; static;
+  public
+    constructor Create(const characterCountBitsForVersions: TArray<Integer>;
+      const bits: Integer; const name: String); overload;
+
+    // No, we can't use an enum here. J2ME doesn't support it.
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var TERMINATOR: TMode;
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var NUMERIC: TMode;
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var ALPHANUMERIC: TMode;
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var STRUCTURED_APPEND: TMode;
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var BYTE: TMode;
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var ECI: TMode; // character counts don't apply
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var KANJI: TMode;
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var FNC1_FIRST_POSITION: TMode;
+
+    /// <summary>
+    ///
+    /// </summary>
+    class var FNC1_SECOND_POSITION: TMode;
+
+    /// <summary>See GBT 18284-2000; "Hanzi" is a transliteration of this mode name.</summary>
+    class var HANZI: TMode;
+
+    /// <summary>
+    /// Fors the bits.
+    /// </summary>
+    /// <param name="bits">four bits encoding a QR Code data mode</param>
+    /// <returns>
+    ///   <see cref="Mode"/> encoded by these bits
+    /// </returns>
+    /// <exception cref="ArgumentException">if bits do not correspond to a known mode</exception>
+    class function forBits(const bits: Integer): TMode; static;
+
+    /// <param name="version">version in question
+    /// </param>
+    /// <returns> number of bits used, in this QR Code symbol {@link Version}, to encode the
+    /// count of characters that will follow encoded in this {@link Mode}
+    /// </returns>
+    function getCharacterCountBits(const version: TVersion): Integer;
+
+    /// <summary>
+    /// Returns a <see cref="System.String"/> that represents this instance.
+    /// </summary>
+    /// <returns>
+    /// A <see cref="System.String"/> that represents this instance.
+    /// </returns>
+    function ToString: String; override;
+
+    /// <summary>
+    /// Gets the name.
+    /// </summary>
+    property Name: String read Fname;
+
+    /// <summary>
+    /// Gets the bits.
+    /// </summary>
+    property Bits: Integer read Fbits;
+  end;
+
+implementation
+
+{ TMode }
+
+constructor TMode.Create(const characterCountBitsForVersions: TArray<Integer>;
+  const bits: Integer; const name: String);
+begin
+  Self.characterCountBitsForVersions := characterCountBitsForVersions;
+  Self.Fbits := bits;
+  Self.Fname := name
+end;
+
+class procedure TMode.InitializeClass;
+begin
+
+  TMode.TERMINATOR := TMode.Create(TArray<Integer>.Create(0, 0, 0), 0, 'TERMINATOR');
+  TMode.NUMERIC := TMode.Create(TArray<Integer>.Create(10, 12, 14), 1,
+    'NUMERIC');
+  TMode.ALPHANUMERIC := TMode.Create(TArray<Integer>.Create(9, 11, 13), 2,
+    'ALPHANUMERIC');
+  TMode.STRUCTURED_APPEND := TMode.Create(TArray<Integer>.Create(0, 0, 0), 3,
+    'STRUCTURED_APPEND');
+  TMode.BYTE := TMode.Create(TArray<Integer>.Create(8, $10, $10), 4, 'BYTE');
+  TMode.ECI := TMode.Create(nil, 7, 'ECI');
+  TMode.KANJI := TMode.Create(TArray<Integer>.Create(8, 10, 12), 8, 'KANJI');
+  TMode.FNC1_FIRST_POSITION := TMode.Create(nil, 5, 'FNC1_FIRST_POSITION');
+  TMode.FNC1_SECOND_POSITION := TMode.Create(nil, 9, 'FNC1_SECOND_POSITION');
+  TMode.HANZI := TMode.Create(TArray<Integer>.Create(8, 10, 12), 13, 'HANZI')
+end;
+
+class procedure TMode.FinalizeClass;
+begin
+  TMode.TERMINATOR.characterCountBitsForVersions := nil;
+  TMode.NUMERIC.characterCountBitsForVersions := nil;
+  TMode.ALPHANUMERIC.characterCountBitsForVersions := nil;
+  TMode.STRUCTURED_APPEND.characterCountBitsForVersions := nil;
+  TMode.BYTE.characterCountBitsForVersions := nil;
+  TMode.ECI.characterCountBitsForVersions := nil;
+  TMode.KANJI.characterCountBitsForVersions := nil;
+  TMode.FNC1_FIRST_POSITION.characterCountBitsForVersions := nil;
+  TMode.FNC1_SECOND_POSITION.characterCountBitsForVersions := nil;
+  TMode.HANZI.characterCountBitsForVersions := nil;
+
+  // SetLength(TMode.TERMINATOR.name, 0);
+  // SetLength(TMode.NUMERIC.name, 0);
+  // SetLength(TMode.ALPHANUMERIC.name, 0);
+  // SetLength(TMode.STRUCTURED_APPEND.name, 0);
+  // SetLength(TMode.BYTE.name, 0);
+  // SetLength(TMode.ECI.name, 0);
+  // SetLength(TMode.KANJI.name, 0);
+  // SetLength(TMode.FNC1_FIRST_POSITION.name, 0);
+  // SetLength(TMode.FNC1_SECOND_POSITION.name, 0);
+  // SetLength(TMode.HANZI.name, 0);
+
+  FreeAndNil(TMode.TERMINATOR);
+  FreeAndNil(TMode.NUMERIC);
+  FreeAndNil(TMode.ALPHANUMERIC);
+  FreeAndNil(TMode.STRUCTURED_APPEND);
+  FreeAndNil(TMode.BYTE);
+  FreeAndNil(TMode.ECI);
+  FreeAndNil(TMode.KANJI);
+  FreeAndNil(TMode.FNC1_FIRST_POSITION);
+  FreeAndNil(TMode.FNC1_SECOND_POSITION);
+  FreeAndNil(TMode.HANZI);
+
+end;
+
+class function TMode.forBits(const bits: Integer): TMode;
+begin
+  case bits of
+    $0: Result := TMode.TERMINATOR;
+    $1: Result := TMode.NUMERIC;
+    $2: Result := TMode.ALPHANUMERIC;
+    $3: Result := TMode.STRUCTURED_APPEND;
+    $4: Result := TMode.BYTE;
+    $5: Result := TMode.FNC1_FIRST_POSITION;
+    $7: Result := TMode.ECI;
+    $8: Result := TMode.KANJI;
+    $9: Result := TMode.FNC1_SECOND_POSITION;
+    $D: Result := TMode.HANZI; // 0xD is defined in GBT 18284-2000, may not be supported in foreign country
+    else
+       raise EArgumentException.Create('Invalid arguments');
+  end;
+end;
+
+function TMode.getCharacterCountBits(const version: TVersion): Integer;
+var
+  offset,
+  number : Integer;
+begin
+  if (Self.characterCountBitsForVersions = nil)
+  then
+     raise EArgumentException.Create('Character count doesn''t apply to this mode');
+
+  number := version.VersionNumber;
+  if (number <= 9)
+  then
+     offset := 0
+  else
+     if (number <= 26)
+     then
+        offset := 1
+     else
+        offset := 2;
+
+  Result := Self.characterCountBitsForVersions[offset];
+end;
+
+function TMode.ToString: string;
+begin
+  Result := Self.name;
+end;
+
+initialization
+  TMode.InitializeClass;
+finalization
+  TMode.FinalizeClass;
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.QRCodeDecoderMetaData.pas

@@ -0,0 +1,77 @@
+{
+  * Copyright 2013 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+
+unit ZXing.QrCode.Internal.QRCodeDecoderMetaData;
+
+interface
+
+uses 
+  ZXing.ResultPoint;
+
+type
+  /// <summary>
+  /// Meta-data container for QR Code decoding. Instances of this class may be used to convey information back to the
+  /// decoding caller. Callers are expected to process this.
+  /// </summary>
+  TQRCodeDecoderMetaData = class sealed
+  private
+    Fmirrored: Boolean;
+  public
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TQRCodeDecoderMetaData"/> class.
+    /// </summary>
+    /// <param name="mirrored">if set to <c>true</c> [mirrored].</param>
+    constructor Create(const mirrored: Boolean);
+
+    /// <summary>
+    /// Apply the result points' order correction due to mirroring.
+    /// </summary>
+    /// <param name="points">Array of points to apply mirror correction to.</param>
+    procedure applyMirroredCorrection(const points: TArray<IResultPoint>);
+
+    /// <summary>
+    /// true if the QR Code was mirrored.
+    /// </summary>
+    property IsMirrored: boolean read Fmirrored;
+  end;
+
+implementation
+
+{ TQRCodeDecoderMetaData }
+
+constructor TQRCodeDecoderMetaData.Create(const mirrored: Boolean);
+begin
+  Fmirrored := mirrored;
+end;
+
+procedure TQRCodeDecoderMetaData.applyMirroredCorrection(
+  const points: TArray<IResultPoint>);
+var
+  bottomLeft: IResultPoint;
+begin
+  if ((FMirrored and (points <> nil)) and (Length(points) >= 3)) then
+  begin
+    bottomLeft := points[0];
+    points[0] := points[2];
+    points[2] := bottomLeft;
+    // No need to 'fix' top-left and alignment pattern.
+  end
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Decoder/ZXing.QrCode.Internal.Version.pas

@@ -0,0 +1,681 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.Version;
+
+interface
+
+uses 
+  System.SysUtils,
+  ZXing.Common.Bitmatrix,
+  ZXing.QrCode.Internal.ErrorCorrectionLevel,
+  ZXing.QrCode.Internal.FormatInformation, 
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// See ISO 18004:2006 Annex D
+  /// </summary>
+  TVersion = class
+  type
+    TECB = class
+    public
+      count: Integer;
+      dataCodewords: Integer;
+      constructor Create(count: Integer; dataCodewords: Integer);
+    end;
+
+    TECBlocks = class sealed
+    private
+      ecBlocks: TArray<TECB>;
+
+      function getTotalECCodeWords: Integer;
+      function get_NumBlocks: Integer;
+    public
+      ecCodewordsPerBlock: Integer;
+      constructor Create(ecCodewordsPerBlock: Integer; ecBlocks: TArray<TECB>);
+      destructor Destroy; override;
+      function getECBlocks: TArray<TECB>;
+      { property ecCodewordsPerBlock: Integer read get_ECCodewordsPerBlock;
+        property NumBlocks: Integer read get_NumBlocks;
+        property TotalECCodewords: Integer read get_TotalECCodewords;
+      }
+      property NumBlocks: Integer read get_NumBlocks;
+      property TotalECCodewords: Integer read getTotalECCodeWords;
+    end;
+
+  private
+    FalignmentPatternCenters: TArray<Integer>;
+    FecBlocks: TArray<TECBlocks>;
+    FTotalCodewords: Integer;
+    FversionNumber: Integer;
+
+    class var BuildVersions : TArray<TVersion>;
+    /// <summary> See ISO 18004:2006 Annex D.
+    /// Element i represents the raw version bits that specify version i + 7
+    /// </summary>
+    class var VERSION_DECODE_INFO: TArray<Integer>;
+
+    function CalcDimensionForVersion: Integer;
+    class function GetBuildVersions: TArray<TVersion>; static;
+    class procedure ClassInit; static;
+    class procedure ClassFinal; static;
+
+  public
+    constructor Create(const versionNumber: Integer;
+      const alignmentPatternCenters: TArray<Integer>;
+      const ecBlocks: TArray<TECBlocks>);
+    destructor Destroy; override;
+
+    class function decodeVersionInformation(versionBits: Integer)
+      : TVersion; static;
+    function buildFunctionPattern: TBitMatrix;
+    function getECBlocksForLevel(ecLevel: TErrorCorrectionLevel): TECBlocks;
+    class function getProvisionalVersionForDimension(
+      const dimension: Integer): TVersion; static;
+    class function getVersionForNumber(
+      const versionNumber: Integer): TVersion; static;
+    function ToString: String; override;
+
+    property DimensionForVersion: Integer read CalcDimensionForVersion;
+    property alignmentPatternCenters: TArray<Integer>
+      read FalignmentPatternCenters;
+
+    property TotalCodewords: Integer read FTotalCodewords;
+    property versionNumber: Integer read FversionNumber;
+  end;
+
+implementation
+
+{ TVersion.TECB }
+
+constructor TVersion.TECB.Create(count, dataCodewords: Integer);
+begin
+  self.count := count;
+  self.dataCodewords := dataCodewords;
+end;
+
+{ TVersion.TECBlocks }
+
+constructor TVersion.TECBlocks.Create(ecCodewordsPerBlock: Integer;
+  ecBlocks: TArray<TECB>);
+begin
+  self.ecBlocks := ecBlocks;
+  self.ecCodewordsPerBlock := ecCodewordsPerBlock;
+end;
+
+destructor TVersion.TECBlocks.Destroy;
+begin
+  ecBlocks :=nil;
+  inherited;
+end;
+
+function TVersion.TECBlocks.getECBlocks: TArray<TECB>;
+begin
+  result := self.ecBlocks;
+end;
+
+function TVersion.TECBlocks.getTotalECCodeWords: Integer;
+begin
+  result := ecCodewordsPerBlock * NumBlocks;
+end;
+
+function TVersion.TECBlocks.get_NumBlocks: Integer;
+var
+  total: Integer;
+  ecBlock: TECB;
+begin
+  total := 0;
+  for ecBlock in ecBlocks do
+  begin
+    inc(total, ecBlock.count);
+  end;
+
+  result := total;
+
+end;
+
+{ TVersion }
+
+constructor TVersion.Create(const versionNumber: Integer;
+  const alignmentPatternCenters: TArray<Integer>;
+  const ecBlocks: TArray<TECBlocks>);
+var
+  ecBlock: TECB;
+  total, ecCodewords: Integer;
+  ecbArray: TArray<TECB>;
+begin
+  FversionNumber := versionNumber;
+  FalignmentPatternCenters := alignmentPatternCenters;
+  FecBlocks := ecBlocks;
+  total := 0;
+  ecCodewords := ecBlocks[0].ecCodewordsPerBlock;
+  ecbArray := ecBlocks[0].getECBlocks;
+
+  for ecBlock in ecbArray do
+    Inc(total, (ecBlock.count * (ecBlock.dataCodewords + ecCodewords)));
+
+  FTotalCodewords := total;
+  ecbArray := nil;
+end;
+
+destructor TVersion.Destroy;
+var
+  ecBlocks : TECBlocks;
+  ECB : TECB;
+begin
+  FalignmentPatternCenters := nil;
+  for ecBlocks in FecBlocks do
+  begin
+    for ecb in ecBlocks.ecBlocks do
+    begin
+      ECB.Free;
+      //ECB := nil;
+    end;
+    ecBlocks.free;
+  end;
+
+  FecBlocks := nil;
+
+  inherited;
+end;
+
+function TVersion.buildFunctionPattern: TBitMatrix;
+var
+  dimension, max, x, i, y: Integer;
+begin
+  dimension := DimensionForVersion;
+  result := TBitMatrix.Create(dimension);
+  result.setRegion(0, 0, 9, 9);
+  result.setRegion((dimension - 8), 0, 8, 9);
+  result.setRegion(0, (dimension - 8), 9, 8);
+  max := Length(FalignmentPatternCenters);
+  x := 0;
+
+  while ((x < max)) do
+  begin
+    i := (FalignmentPatternCenters[x] - 2);
+    y := 0;
+    while ((y < max)) do
+    begin
+      if (((x <> 0) or ((y <> 0) and (y <> (max - 1)))) and
+        ((x <> (max - 1)) or (y <> 0))) then
+        result.setRegion((self.alignmentPatternCenters[y] - 2), i, 5, 5);
+      inc(y)
+    end;
+    inc(x)
+  end;
+
+  result.setRegion(6, 9, 1, (dimension - $11));
+  result.setRegion(9, 6, (dimension - $11), 1);
+  if (self.versionNumber > 6) then
+  begin
+    result.setRegion((dimension - 11), 0, 3, 6);
+    result.setRegion(0, (dimension - 11), 6, 3)
+  end;
+
+end;
+
+class function TVersion.GetBuildVersions: TArray<TVersion>;
+begin
+  Result := TArray<TVersion>.Create(
+
+    TVersion.Create(1, TArray<Integer>.Create(),
+    TArray<TECBlocks>.Create(TECBlocks.Create(7,
+    TArray<TECB>.Create(TECB.Create(1, 19))), TECBlocks.Create(10,
+    TArray<TECB>.Create(TECB.Create(1, 16))), TECBlocks.Create(13,
+    TArray<TECB>.Create(TECB.Create(1, 13))), TECBlocks.Create(17,
+    TArray<TECB>.Create(TECB.Create(1, 9))))),
+
+    TVersion.Create(2, TArray<Integer>.Create(6, 18),
+    TArray<TECBlocks>.Create(TECBlocks.Create(10,
+    TArray<TECB>.Create(TECB.Create(1, 34))), TECBlocks.Create(16,
+    TArray<TECB>.Create(TECB.Create(1, 28))), TECBlocks.Create(22,
+    TArray<TECB>.Create(TECB.Create(1, 22))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(1, 16))))),
+
+    TVersion.Create(3, TArray<Integer>.Create(6, 22),
+    TArray<TECBlocks>.Create(TECBlocks.Create(15,
+    TArray<TECB>.Create(TECB.Create(1, 55))), TECBlocks.Create(26,
+    TArray<TECB>.Create(TECB.Create(1, 44))), TECBlocks.Create(18,
+    TArray<TECB>.Create(TECB.Create(2, 17))), TECBlocks.Create(22,
+    TArray<TECB>.Create(TECB.Create(2, 13))))),
+
+    TVersion.Create(4, TArray<Integer>.Create(6, 26),
+    TArray<TECBlocks>.Create(TECBlocks.Create(20,
+    TArray<TECB>.Create(TECB.Create(1, 80))), TECBlocks.Create(18,
+    TArray<TECB>.Create(TECB.Create(2, 32))), TECBlocks.Create(26,
+    TArray<TECB>.Create(TECB.Create(2, 24))), TECBlocks.Create(16,
+    TArray<TECB>.Create(TECB.Create(4, 9))))),
+
+    TVersion.Create(5, TArray<Integer>.Create(6, 30),
+    TArray<TECBlocks>.Create(TECBlocks.Create(26,
+    TArray<TECB>.Create(TECB.Create(1, 108))), TECBlocks.Create(24,
+    TArray<TECB>.Create(TECB.Create(2, 43))), TECBlocks.Create(18,
+    TArray<TECB>.Create(TECB.Create(2, 15), TECB.Create(2, 16))),
+    TECBlocks.Create(22, TArray<TECB>.Create(TECB.Create(2, 11),
+    TECB.Create(2, 12))))),
+
+    TVersion.Create(6, TArray<Integer>.Create(6, 34),
+    TArray<TECBlocks>.Create(TECBlocks.Create(18,
+    TArray<TECB>.Create(TECB.Create(2, 68))), TECBlocks.Create(16,
+    TArray<TECB>.Create(TECB.Create(4, 27))), TECBlocks.Create(24,
+    TArray<TECB>.Create(TECB.Create(4, 19))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(4, 15))))),
+
+    TVersion.Create(7, TArray<Integer>.Create(6, 22, 38),
+    TArray<TECBlocks>.Create(TECBlocks.Create(20,
+    TArray<TECB>.Create(TECB.Create(2, 78))), TECBlocks.Create(18,
+    TArray<TECB>.Create(TECB.Create(4, 31))), TECBlocks.Create(18,
+    TArray<TECB>.Create(TECB.Create(2, 14), TECB.Create(4, 15))),
+    TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(4, 13),
+    TECB.Create(1, 14))))),
+
+    TVersion.Create(8, TArray<Integer>.Create(6, 24, 42),
+    TArray<TECBlocks>.Create(TECBlocks.Create(24,
+    TArray<TECB>.Create(TECB.Create(2, 97))), TECBlocks.Create(22,
+    TArray<TECB>.Create(TECB.Create(2, 38), TECB.Create(2, 39))),
+    TECBlocks.Create(22, TArray<TECB>.Create(TECB.Create(4, 18), TECB.Create(2,
+    19))), TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(4, 14),
+    TECB.Create(2, 15))))),
+
+    TVersion.Create(9, TArray<Integer>.Create(6, 26, 46),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(2, 116))), TECBlocks.Create(22,
+    TArray<TECB>.Create(TECB.Create(3, 36), TECB.Create(2, 37))),
+    TECBlocks.Create(20, TArray<TECB>.Create(TECB.Create(4, 16), TECB.Create(4,
+    17))), TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(4, 12),
+    TECB.Create(4, 13))))),
+
+    TVersion.Create(10, TArray<Integer>.Create(6, 28, 50),
+    TArray<TECBlocks>.Create(TECBlocks.Create(18,
+    TArray<TECB>.Create(TECB.Create(2, 68), TECB.Create(2, 69))),
+    TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(4, 43), TECB.Create(1,
+    44))), TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(6, 19),
+    TECB.Create(2, 20))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(6, 15), TECB.Create(2, 16))))),
+
+    TVersion.Create(11, TArray<Integer>.Create(6, 30, 54),
+    TArray<TECBlocks>.Create(TECBlocks.Create(20,
+    TArray<TECB>.Create(TECB.Create(4, 81))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(1, 50), TECB.Create(4, 51))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(4, 22), TECB.Create(4,
+    23))), TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(3, 12),
+    TECB.Create(8, 13))))),
+
+    TVersion.Create(12, TArray<Integer>.Create(6, 32, 58),
+    TArray<TECBlocks>.Create(TECBlocks.Create(24,
+    TArray<TECB>.Create(TECB.Create(2, 92), TECB.Create(2, 93))),
+    TECBlocks.Create(22, TArray<TECB>.Create(TECB.Create(6, 36), TECB.Create(2,
+    37))), TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(4, 20),
+    TECB.Create(6, 21))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(7, 14), TECB.Create(4, 15))))),
+
+    TVersion.Create(13, TArray<Integer>.Create(6, 34, 62),
+    TArray<TECBlocks>.Create(TECBlocks.Create(26,
+    TArray<TECB>.Create(TECB.Create(4, 107))), TECBlocks.Create(22,
+    TArray<TECB>.Create(TECB.Create(8, 37), TECB.Create(1, 38))),
+    TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(8, 20), TECB.Create(4,
+    21))), TECBlocks.Create(22, TArray<TECB>.Create(TECB.Create(12, 11),
+    TECB.Create(4, 12))))),
+
+    TVersion.Create(14, TArray<Integer>.Create(6, 26, 46, 66),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(3, 115), TECB.Create(1, 116))),
+    TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(4, 40), TECB.Create(5,
+    41))), TECBlocks.Create(20, TArray<TECB>.Create(TECB.Create(11, 16),
+    TECB.Create(5, 17))), TECBlocks.Create(24,
+    TArray<TECB>.Create(TECB.Create(11, 12), TECB.Create(5, 13))))),
+
+    TVersion.Create(15, TArray<Integer>.Create(6, 26, 48, 70),
+    TArray<TECBlocks>.Create(TECBlocks.Create(22,
+    TArray<TECB>.Create(TECB.Create(5, 87), TECB.Create(1, 88))),
+    TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(5, 41), TECB.Create(5,
+    42))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(5, 24),
+    TECB.Create(7, 25))), TECBlocks.Create(24,
+    TArray<TECB>.Create(TECB.Create(11, 12), TECB.Create(7, 13))))),
+
+    TVersion.Create(16, TArray<Integer>.Create(6, 26, 50, 74),
+    TArray<TECBlocks>.Create(TECBlocks.Create(24,
+    TArray<TECB>.Create(TECB.Create(5, 98), TECB.Create(1, 99))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(7, 45), TECB.Create(3,
+    46))), TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(15, 19),
+    TECB.Create(2, 20))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(3, 15), TECB.Create(13, 16))))),
+
+    TVersion.Create(17, TArray<Integer>.Create(6, 30, 54, 78),
+    TArray<TECBlocks>.Create(TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(1, 107), TECB.Create(5, 108))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(10, 46), TECB.Create(1,
+    47))), TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(1, 22),
+    TECB.Create(15, 23))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(2, 14), TECB.Create(17, 15))))),
+
+    TVersion.Create(18, TArray<Integer>.Create(6, 30, 56, 82),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(5, 120), TECB.Create(1, 121))),
+    TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(9, 43), TECB.Create(4,
+    44))), TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(17, 22),
+    TECB.Create(1, 23))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(2, 14), TECB.Create(19, 15))))),
+
+    TVersion.Create(19, TArray<Integer>.Create(6, 30, 58, 86),
+    TArray<TECBlocks>.Create(TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(3, 113), TECB.Create(4, 114))),
+    TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(3, 44), TECB.Create(11,
+    45))), TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(17, 21),
+    TECB.Create(4, 22))), TECBlocks.Create(26,
+    TArray<TECB>.Create(TECB.Create(9, 13), TECB.Create(16, 14))))),
+
+    TVersion.Create(20, TArray<Integer>.Create(6, 34, 62, 90),
+    TArray<TECBlocks>.Create(TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(3, 107), TECB.Create(5, 108))),
+    TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(3, 41), TECB.Create(13,
+    42))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(15, 24),
+    TECB.Create(5, 25))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(15, 15), TECB.Create(10, 16))))),
+
+    TVersion.Create(21, TArray<Integer>.Create(6, 28, 50, 72, 94),
+    TArray<TECBlocks>.Create(TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(4, 116), TECB.Create(4, 117))),
+    TECBlocks.Create(26, TArray<TECB>.Create(TECB.Create(17, 42))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(17, 22), TECB.Create(6,
+    23))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(19, 16),
+    TECB.Create(6, 17))))),
+
+    TVersion.Create(22, TArray<Integer>.Create(6, 26, 50, 74, 98),
+    TArray<TECBlocks>.Create(TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(2, 111), TECB.Create(7, 112))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(17, 46))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(7, 24), TECB.Create(16,
+    25))), TECBlocks.Create(24, TArray<TECB>.Create(TECB.Create(34, 13))))),
+
+    TVersion.Create(23, TArray<Integer>.Create(6, 30, 54, 78, 102),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(4, 121), TECB.Create(5, 122))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(4, 47), TECB.Create(14,
+    48))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(11, 24),
+    TECB.Create(14, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(16, 15), TECB.Create(14, 16))))),
+
+    TVersion.Create(24, TArray<Integer>.Create(6, 28, 54, 80, 106),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(6, 117), TECB.Create(4, 118))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(6, 45), TECB.Create(14,
+    46))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(11, 24),
+    TECB.Create(16, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(30, 16), TECB.Create(2, 17))))),
+
+    TVersion.Create(25, TArray<Integer>.Create(6, 32, 58, 84, 110),
+    TArray<TECBlocks>.Create(TECBlocks.Create(26,
+    TArray<TECB>.Create(TECB.Create(8, 106), TECB.Create(4, 107))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(8, 47), TECB.Create(13,
+    48))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(7, 24),
+    TECB.Create(22, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(22, 15), TECB.Create(13, 16))))),
+
+    TVersion.Create(26, TArray<Integer>.Create(6, 30, 58, 86, 114),
+    TArray<TECBlocks>.Create(TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(10, 114), TECB.Create(2, 115))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(19, 46), TECB.Create(4,
+    47))), TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(28, 22),
+    TECB.Create(6, 23))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(33, 16), TECB.Create(4, 17))))),
+
+    TVersion.Create(27, TArray<Integer>.Create(6, 34, 62, 90, 118),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(8, 122), TECB.Create(4, 123))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(22, 45), TECB.Create(3,
+    46))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(8, 23),
+    TECB.Create(26, 24))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(12, 15), TECB.Create(28, 16))))),
+
+    TVersion.Create(28, TArray<Integer>.Create(6, 26, 50, 74, 98, 122),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(3, 117), TECB.Create(10, 118))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(3, 45), TECB.Create(23,
+    46))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(4, 24),
+    TECB.Create(31, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(11, 15), TECB.Create(31, 16))))),
+
+    TVersion.Create(29, TArray<Integer>.Create(6, 30, 54, 78, 102, 126),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(7, 116), TECB.Create(7, 117))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(21, 45), TECB.Create(7,
+    46))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(1, 23),
+    TECB.Create(37, 24))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(19, 15), TECB.Create(26, 16))))),
+
+    TVersion.Create(30, TArray<Integer>.Create(6, 26, 52, 78, 104, 130),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(5, 115), TECB.Create(10, 116))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(19, 47),
+    TECB.Create(10, 48))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(15, 24), TECB.Create(25, 25))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(23, 15),
+    TECB.Create(25, 16))))),
+
+    TVersion.Create(31, TArray<Integer>.Create(6, 30, 56, 82, 108, 134),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(13, 115), TECB.Create(3, 116))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(2, 46), TECB.Create(29,
+    47))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(42, 24),
+    TECB.Create(1, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(23, 15), TECB.Create(28, 16))))),
+
+    TVersion.Create(32, TArray<Integer>.Create(6, 34, 60, 86, 112, 138),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(17, 115))), TECBlocks.Create(28,
+    TArray<TECB>.Create(TECB.Create(10, 46), TECB.Create(23, 47))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(10, 24),
+    TECB.Create(35, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(19, 15), TECB.Create(35, 16))))),
+
+    TVersion.Create(33, TArray<Integer>.Create(6, 30, 58, 86, 114, 142),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(17, 115), TECB.Create(1, 116))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(14, 46),
+    TECB.Create(21, 47))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(29, 24), TECB.Create(19, 25))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(11, 15),
+    TECB.Create(46, 16))))),
+
+    TVersion.Create(34, TArray<Integer>.Create(6, 34, 62, 90, 118, 146),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(13, 115), TECB.Create(6, 116))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(14, 46),
+    TECB.Create(23, 47))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(44, 24), TECB.Create(7, 25))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(59, 16),
+    TECB.Create(1, 17))))),
+
+    TVersion.Create(35, TArray<Integer>.Create(6, 30, 54, 78, 102, 126, 150),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(12, 121), TECB.Create(7, 122))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(12, 47),
+    TECB.Create(26, 48))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(39, 24), TECB.Create(14, 25))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(22, 15),
+    TECB.Create(41, 16))))),
+
+    TVersion.Create(36, TArray<Integer>.Create(6, 24, 50, 76, 102, 128, 154),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(6, 121), TECB.Create(14, 122))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(6, 47), TECB.Create(34,
+    48))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(46, 24),
+    TECB.Create(10, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(2, 15), TECB.Create(64, 16))))),
+
+    TVersion.Create(37, TArray<Integer>.Create(6, 28, 54, 80, 106, 132, 158),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(17, 122), TECB.Create(4, 123))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(29, 46),
+    TECB.Create(14, 47))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(49, 24), TECB.Create(10, 25))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(24, 15),
+    TECB.Create(46, 16))))),
+
+    TVersion.Create(38, TArray<Integer>.Create(6, 32, 58, 84, 110, 136, 162),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(4, 122), TECB.Create(18, 123))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(13, 46),
+    TECB.Create(32, 47))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(48, 24), TECB.Create(14, 25))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(42, 15),
+    TECB.Create(32, 16))))),
+
+    TVersion.Create(39, TArray<Integer>.Create(6, 26, 54, 82, 110, 138, 166),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(20, 117), TECB.Create(4, 118))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(40, 47), TECB.Create(7,
+    48))), TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(43, 24),
+    TECB.Create(22, 25))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(10, 15), TECB.Create(67, 16))))),
+
+    TVersion.Create(40, TArray<Integer>.Create(6, 30, 58, 86, 114, 142, 170),
+    TArray<TECBlocks>.Create(TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(19, 118), TECB.Create(6, 119))),
+    TECBlocks.Create(28, TArray<TECB>.Create(TECB.Create(18, 47),
+    TECB.Create(31, 48))), TECBlocks.Create(30,
+    TArray<TECB>.Create(TECB.Create(34, 24), TECB.Create(34, 25))),
+    TECBlocks.Create(30, TArray<TECB>.Create(TECB.Create(20, 15),
+    TECB.Create(61, 16)))))
+
+    );
+
+end;
+
+function TVersion.CalcDimensionForVersion: Integer;
+begin
+  result := 17 + 4 * versionNumber;
+end;
+
+class function TVersion.decodeVersionInformation(versionBits: Integer)
+  : TVersion;
+var
+  bestDifference, bestversion, i, targetVersion, bitsDifference: Integer;
+begin
+  bestDifference := $7FFFFFFF;
+  bestversion := 0;
+  i := 0;
+
+  while ((i < Length(TVersion.VERSION_DECODE_INFO))) do
+  begin
+    targetVersion := TVersion.VERSION_DECODE_INFO[i];
+
+    if (targetVersion = versionBits) then
+    begin
+      result := TVersion.getVersionForNumber((i + 7));
+      exit
+    end;
+
+    bitsDifference := TFormatInformation.numBitsDiffering(versionBits,
+      targetVersion);
+
+    if (bitsDifference < bestDifference) then
+    begin
+      bestversion := (i + 7);
+      bestDifference := bitsDifference
+    end;
+    inc(i)
+
+  end;
+
+  if (bestDifference <= 3) then
+  begin
+    result := TVersion.getVersionForNumber(bestversion);
+    exit
+  end;
+
+  result := nil;
+end;
+
+function TVersion.getECBlocksForLevel(ecLevel: TErrorCorrectionLevel)
+  : TECBlocks;
+begin
+  result := FecBlocks[ecLevel.ordinal]
+end;
+
+class function TVersion.getProvisionalVersionForDimension(
+  const dimension: Integer): TVersion;
+begin
+  Result := nil;
+
+  if ((dimension mod 4) <> 1)
+  then
+     exit;
+
+  try
+    Result := TVersion.getVersionForNumber(TMathUtils.Asr(dimension - $11, 2));
+  except
+    on E: EArgumentException do
+      Result := nil;
+  end
+end;
+
+class function TVersion.getVersionForNumber(
+  const versionNumber: Integer): TVersion;
+begin
+  if ((versionNumber < 1) or (versionNumber > 40)) then
+    raise EArgumentException.Create
+      ('version number needs to be between 1 and 40');
+
+  Result := TVersion.BuildVersions[(versionNumber - 1)];
+end;
+
+function TVersion.ToString: string;
+begin
+  result := self.versionNumber.ToString();
+end;
+
+class procedure TVersion.ClassInit();
+begin
+  TVersion.VERSION_DECODE_INFO := TArray<Integer>.Create($7C94, $85BC, $9A99,
+    $A4D3, $BBF6, $C762, $D847, $E60D, $F928, $10B78, $1145D, $12A17, $13532,
+    $149A6, $15683, $168C9, $177EC, $18EC4, $191E1, $1AFAB, $1B08E, $1CC1A,
+    $1D33F, $1ED75, $1F250, $209D5, $216F0, $228BA, $2379F, $24B0B, $2542E,
+    $26A64, $27541, $28C69);
+
+  TVersion.BuildVersions := TVersion.GetBuildVersions;
+end;
+
+class procedure TVersion.ClassFinal();
+var version :Tversion;
+begin
+  TVersion.VERSION_DECODE_INFO := nil;
+  
+  for version in TVersion.BuildVersions do
+  begin
+    version.Free;
+  end;
+  
+  TVersion.BuildVersions :=nil;
+end;
+
+
+Initialization
+
+TVersion.ClassInit();
+
+Finalization
+
+TVersion.ClassFinal();
+
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.Datamatrix.Internal.Detector.pas

@@ -0,0 +1,632 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.Datamatrix.Internal.Detector;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Math,
+  System.Generics.Defaults,
+  System.Generics.Collections,
+  ZXing.Common.BitMatrix,
+  ZXing.DefaultGridSampler,
+  ZXing.Common.DetectorResult,
+  ZXing.ResultPoint,
+  ZXing.Common.GridSampler,
+  ZXing.Common.Detector.MathUtils,
+  ZXing.Common.Detector.WhiteRectangleDetector;
+
+type
+  /// <summary>
+  /// <p>Encapsulates logic that can detect a Data Matrix Code in an image, even if the Data Matrix Code
+  /// is rotated or skewed, or partially obscured.</p>
+  /// </summary>
+  TDataMatrixDetector = class(TObject)
+  private
+  var
+    Fimage: TBitMatrix;
+    FrectangleDetector: TWhiteRectangleDetector;
+
+  type
+    /// <summary>
+    /// Simply encapsulates two points and a number of transitions between them.
+    /// </summary>
+    TResultPointsAndTransitions = class sealed
+    public
+      From: IResultPoint;
+      To_: IResultPoint;
+      Transitions: Integer;
+
+      constructor Create(From: IResultPoint; To_: IResultPoint;
+        Transitions: Integer);
+      destructor Destroy; override;
+      function ToString: String; override;
+    end;
+
+    /// <summary>
+    /// Orders ResultPointsAndTransitions by number of transitions, ascending.
+    /// </summary>
+    TResultPointsAndTransitionsComparator = class sealed
+      (TComparer<TResultPointsAndTransitions>)
+    public
+      function Compare(const o1, o2: TResultPointsAndTransitions)
+        : Integer; override;
+    end;
+
+  var
+    FtransCompare: TResultPointsAndTransitionsComparator;
+  public
+    constructor Create(const image: TBitMatrix);
+    destructor Destroy; override;
+    function detect: TDetectorResult;
+    function transitionsBetween(Afrom, Ato: IResultPoint)
+      : TResultPointsAndTransitions;
+    function distance(a: IResultPoint; b: IResultPoint): Integer;
+    procedure increment(table: TDictionary<IResultPoint, Integer>;
+      key: IResultPoint);
+    function sampleGrid(image: TBitMatrix; topLeft, bottomLeft, bottomRight,
+      topRight: IResultPoint; dimensionX, dimensionY: Integer): TBitMatrix;
+    function isValid(p: IResultPoint): Boolean;
+    function correctTopRight(bottomLeft, bottomRight, topLeft,
+      topRight: IResultPoint; dimension: Integer): IResultPoint;
+    function correctTopRightRectangular(bottomLeft, bottomRight, topLeft,
+      topRight: IResultPoint; dimensionTop, dimensionRight: Integer)
+      : IResultPoint;
+  end;
+
+implementation
+
+{ TDataMatrixDetector }
+
+/// <summary>
+/// Initializes a new instance of the <see cref="Detector"/> class.
+/// </summary>
+/// <param name="image">The image.</param>
+constructor TDataMatrixDetector.Create(const image: TBitMatrix);
+begin
+  Self.Fimage := image;
+  Self.FrectangleDetector := TWhiteRectangleDetector.New(image);
+  Self.FtransCompare := TResultPointsAndTransitionsComparator.Create;
+end;
+
+destructor TDataMatrixDetector.Destroy;
+begin
+  if (FrectangleDetector <> nil) then
+    FrectangleDetector.Free;
+
+  FtransCompare.Free;
+  inherited;
+end;
+
+/// <summary>
+/// <p>Detects a Data Matrix Code in an image.</p>
+/// </summary>
+/// <returns><see cref="DetectorResult" />encapsulating results of detecting a Data Matrix Code or null</returns>
+function TDataMatrixDetector.detect(): TDetectorResult;
+var
+  topRight, correctedTopRight, pointA, pointB, pointC, pointD, maybeTopLeft,
+    bottomLeft, bottomRight, topLeft, maybeBottomRight, point: IResultPoint;
+
+  cornerPoints: TArray<IResultPoint>;
+  bits: TBitMatrix;
+  entry: TPair<IResultPoint, Integer>; // TKeyValuePair
+  Transitions: TObjectList<TResultPointsAndTransitions>;
+  lSideOne, lSideTwo, transBetween, transA, transB: TResultPointsAndTransitions;
+  pointCount: TDictionary<IResultPoint, Integer>;
+
+  corners: TArray<IResultPoint>;
+
+  dimensionTop, dimensionRight, dimension, dimensionCorrected: Integer;
+begin
+  Result := nil;
+
+  if (FrectangleDetector = nil) then
+    // can be null, if the image is to small
+    exit;
+
+  cornerPoints := FrectangleDetector.detect();
+  if (cornerPoints = nil) then
+    exit;
+
+  pointA := cornerPoints[0];
+  pointB := cornerPoints[1];
+  pointC := cornerPoints[2];
+  pointD := cornerPoints[3];
+
+  // Point A and D are across the diagonal from one another,
+  // as are B and C. Figure out which are the solid black lines
+  // by counting transitions
+  Transitions := TObjectList<TResultPointsAndTransitions>.Create;
+  pointCount := TDictionary<IResultPoint, Integer>.Create();
+  try
+    Transitions.Add(transitionsBetween(pointA, pointB));
+    Transitions.Add(transitionsBetween(pointA, pointC));
+    Transitions.Add(transitionsBetween(pointB, pointD));
+    Transitions.Add(transitionsBetween(pointC, pointD));
+    Transitions.Sort(FtransCompare);
+
+    // Sort by number of transitions. First two will be the two solid sides; last two
+    // will be the two alternating black/white sides
+    lSideOne := Transitions[0];
+    lSideTwo := Transitions[1];
+
+    // Figure out which point is their intersection by tallying up the number of times we see the
+    // endpoints in the four endpoints. One will show up twice.
+
+    increment(pointCount, lSideOne.From);
+    increment(pointCount, lSideOne.To_);
+    increment(pointCount, lSideTwo.From);
+    increment(pointCount, lSideTwo.To_);
+
+    maybeTopLeft := nil;
+    bottomLeft := nil;
+    maybeBottomRight := nil;
+
+    for entry in pointCount do
+    begin
+      point := entry.key;
+      if (entry.Value = 2) then
+        bottomLeft := point
+        // this is definitely the bottom left, then -- end of two L sides
+      else
+      begin
+        // Otherwise it's either top left or bottom right -- just assign the two arbitrarily now
+        if (maybeTopLeft = nil) then
+          maybeTopLeft := point
+        else
+          maybeBottomRight := point;
+      end;
+    end;
+
+    if ((maybeTopLeft = nil) or (bottomLeft = nil) or (maybeBottomRight = nil))
+    then
+      exit;
+
+    // Bottom left is correct but top left and bottom right might be switched
+    corners := TArray<IResultPoint>.Create(maybeTopLeft, bottomLeft,
+      maybeBottomRight);
+    // Use the dot product trick to sort them out
+    TResultPointHelpers.orderBestPatterns(corners);
+
+    // Now we know which is which:
+    bottomRight := corners[0];
+    bottomLeft := corners[1];
+    topLeft := corners[2];
+
+    // Which point didn't we find in relation to the "L" sides? that's the top right corner
+    if (not pointCount.ContainsKey(pointA)) then
+      topRight := pointA
+    else if (not pointCount.ContainsKey(pointB)) then
+      topRight := pointB
+    else if (not pointCount.ContainsKey(pointC)) then
+      topRight := pointC
+    else
+      topRight := pointD;
+
+    // Next determine the dimension by tracing along the top or right side and counting black/white
+    // transitions. Since we start inside a black module, we should see a number of transitions
+    // equal to 1 less than the code dimension. Well, actually 2 less, because we are going to
+    // end on a black module:
+
+    // The top right point is actually the corner of a module, which is one of the two black modules
+    // adjacent to the white module at the top right. Tracing to that corner from either the top left
+    // or bottom right should work here.
+    transBetween := transitionsBetween(topLeft, topRight);
+    dimensionTop := transBetween.Transitions;
+    transBetween.Free;
+
+    transBetween := transitionsBetween(bottomRight, topRight);
+    dimensionRight := transBetween.Transitions;
+    transBetween.Free;
+
+    if ((dimensionTop and $01) = 1) then
+      // it can't be odd, so, round... up?
+      Inc(dimensionTop);
+    Inc(dimensionTop, 2);
+
+    if ((dimensionRight and $01) = 1) then
+      // it can't be odd, so, round... up?
+      Inc(dimensionRight);
+    Inc(dimensionRight, 2);
+
+    // Rectangular symbols are 6x16, 6x28, 10x24, 10x32, 14x32, or 14x44. If one dimension is more
+    // than twice the other, it's certainly rectangular, but to cut a bit more slack we accept it as
+    // rectangular if the bigger side is at least 7/4 times the other:
+    if (((4 * dimensionTop) >= (7 * dimensionRight)) or
+      ((4 * dimensionRight) >= (7 * dimensionTop))) then
+    begin
+      // The matrix is rectangular
+      correctedTopRight := correctTopRightRectangular(bottomLeft, bottomRight,
+        topLeft, topRight, dimensionTop, dimensionRight);
+      if (correctedTopRight = nil) then
+        correctedTopRight := topRight;
+
+      transBetween := transitionsBetween(topLeft, correctedTopRight);
+      dimensionTop := transBetween.Transitions;
+      transBetween.Free;
+
+      transBetween := transitionsBetween(bottomRight, correctedTopRight);
+      dimensionRight := transBetween.Transitions;
+      transBetween.Free;
+
+      if ((dimensionTop and $01) = 1) then
+        // it can't be odd, so, round... up?
+        Inc(dimensionTop);
+
+      if ((dimensionRight and $01) = 1) then
+        // it can't be odd, so, round... up?
+        Inc(dimensionRight);
+
+      bits := sampleGrid(Fimage, topLeft, bottomLeft, bottomRight,
+        correctedTopRight, dimensionTop, dimensionRight)
+    end
+    else
+    begin
+      // The matrix is square
+      dimension := System.Math.Min(dimensionRight, dimensionTop);
+      // correct top right point to match the white module
+      correctedTopRight := correctTopRight(bottomLeft, bottomRight, topLeft,
+        topRight, dimension);
+      if (correctedTopRight = nil) then
+        correctedTopRight := topRight;
+
+      // Redetermine the dimension using the corrected top right point
+      transA := transitionsBetween(topLeft, correctedTopRight);
+      transB := transitionsBetween(bottomRight, correctedTopRight);
+      dimensionCorrected :=
+        (System.Math.Max(transA.Transitions, transB.Transitions) + 1);
+
+      transA.Free;
+      transB.Free;
+
+      if ((dimensionCorrected and $01) = 1) then
+        Inc(dimensionCorrected);
+
+      bits := sampleGrid(Fimage, topLeft, bottomLeft, bottomRight,
+        correctedTopRight, dimensionCorrected, dimensionCorrected);
+    end;
+
+    if (bits = nil) then
+      exit;
+
+    Result := TDetectorResult.Create(bits, TArray<IResultPoint>.Create(topLeft,
+      bottomLeft, bottomRight, correctedTopRight));
+
+  finally
+    pointCount.Free;
+    Transitions.Free;
+    cornerPoints := nil;
+  end;
+end;
+
+/// <summary>
+/// Calculates the position of the white top right module using the output of the rectangle detector
+/// for a rectangular matrix
+/// </summary>
+function TDataMatrixDetector.correctTopRightRectangular(bottomLeft, bottomRight,
+  topLeft, topRight: IResultPoint; dimensionTop, dimensionRight: Integer)
+  : IResultPoint;
+var
+  corr, norm, cos, sin: Single;
+  c1, c2: IResultPoint;
+  l1, l2: Integer;
+  rpT1, rpT2: TResultPointsAndTransitions;
+begin
+  corr := (distance(bottomLeft, bottomRight) / dimensionTop);
+  norm := distance(topLeft, topRight);
+  if (norm = 0) then
+  begin
+    Result := nil;
+    exit
+  end;
+  cos := ((topRight.X - topLeft.X) / norm);
+  sin := ((topRight.Y - topLeft.Y) / norm);
+
+  c1 := TResultPointHelpers.CreateResultPoint((topRight.X + (corr * cos)),
+    (topRight.Y + (corr * sin)));
+
+  corr := (distance(bottomLeft, topLeft) / dimensionRight);
+  norm := distance(bottomRight, topRight);
+  if (norm = 0) then
+  begin
+    Result := nil;
+    exit;
+  end;
+  cos := ((topRight.X - bottomRight.X) / norm);
+  sin := ((topRight.Y - bottomRight.Y) / norm);
+
+  c2 := TResultPointHelpers.CreateResultPoint((topRight.X + (corr * cos)),
+    (topRight.Y + (corr * sin)));
+  if (not isValid(c1)) then
+  begin
+    if (isValid(c2)) then
+    begin
+      Result := c2;
+      exit;
+    end;
+
+    Result := nil;
+    exit;
+  end;
+  if (not isValid(c2)) then
+  begin
+    Result := c1;
+    exit;
+  end;
+
+  rpT1 := transitionsBetween(topLeft, c1);
+  rpT2 := transitionsBetween(bottomRight, c1);
+
+  l1 := (Abs((dimensionTop - rpT1.Transitions)) +
+    Abs((dimensionRight - rpT2.Transitions)));
+
+  FreeAndNil(rpT1);
+  FreeAndNil(rpT2);
+
+  rpT1 := transitionsBetween(topLeft, c2);
+  rpT2 := transitionsBetween(bottomRight, c2);
+
+  l2 := (Abs((dimensionTop - rpT1.Transitions)) +
+    Abs((dimensionRight - rpT2.Transitions)));
+
+  FreeAndNil(rpT1);
+  FreeAndNil(rpT2);
+
+  if (l1 <= l2) then
+  begin
+    Result := c1;
+  end
+  else
+  begin
+    Result := c2;
+  end;
+end;
+
+/// <summary>
+/// Calculates the position of the white top right module using the output of the rectangle detector
+/// for a square matrix
+/// </summary>
+function TDataMatrixDetector.correctTopRight(bottomLeft, bottomRight, topLeft,
+  topRight: IResultPoint; dimension: Integer): IResultPoint;
+var
+  corr, cos, sin: Single;
+  norm: Integer;
+  c1, c2: IResultPoint;
+  l1, l2: Integer;
+  transA, transB: TResultPointsAndTransitions;
+begin
+  corr := (distance(bottomLeft, bottomRight) / dimension);
+  norm := distance(topLeft, topRight);
+  if (norm = 0) then
+  begin
+    Result := nil;
+    exit;
+  end;
+  cos := ((topRight.X - topLeft.X) / norm);
+  sin := ((topRight.Y - topLeft.Y) / norm);
+
+  c1 := TResultPointHelpers.CreateResultPoint((topRight.X + (corr * cos)),
+    (topRight.Y + (corr * sin)));
+
+  corr := (distance(bottomLeft, topLeft) / dimension);
+  norm := distance(bottomRight, topRight);
+  if (norm = 0) then
+  begin
+    Result := nil;
+    exit;
+  end;
+  cos := ((topRight.X - bottomRight.X) / norm);
+  sin := ((topRight.Y - bottomRight.Y) / norm);
+
+  c2 := TResultPointHelpers.CreateResultPoint((topRight.X + (corr * cos)),
+    (topRight.Y + (corr * sin)));
+
+  if (not isValid(c1)) then
+  begin
+    if (isValid(c2)) then
+    begin
+      Result := c2;
+      exit;
+    end;
+
+    Result := nil;
+    exit;
+  end;
+
+  if (not isValid(c2)) then
+  begin
+    Result := c1;
+    exit;
+  end;
+
+  transA := transitionsBetween(topLeft, c1);
+  transB := transitionsBetween(bottomRight, c1);
+  l1 := (Abs(transA.Transitions - transB.Transitions));
+  transA.Free;
+  transB.Free;
+
+  transA := transitionsBetween(topLeft, c2);
+  transB := transitionsBetween(bottomRight, c2);
+  l2 := (Abs(transA.Transitions - transB.Transitions));
+  transA.Free;
+  transB.Free;
+
+  if (l1 <= l2) then
+  begin
+    Result := c1;
+  end
+  else
+  begin
+    Result := c2;
+  end;
+
+end;
+
+function TDataMatrixDetector.isValid(p: IResultPoint): Boolean;
+begin
+  Result := ((((p.X >= 0) and (p.X < Fimage.Width)) and (p.Y > 0)) and
+    (p.Y < Fimage.Height))
+end;
+
+// L2 distance
+function TDataMatrixDetector.distance(a: IResultPoint; b: IResultPoint)
+  : Integer;
+begin
+  Result := TMathUtils.round(TResultPointHelpers.distance(a, b))
+end;
+
+/// <summary>
+/// Increments the Integer associated with a key by one.
+/// </summary>
+procedure TDataMatrixDetector.increment
+  (table: TDictionary<IResultPoint, Integer>; key: IResultPoint);
+var
+  Value: Integer;
+begin
+  if (table.ContainsKey(key)) then
+  begin
+    Value := table[key];
+    table[key] := (Value + 1);
+  end
+  else
+    table.Add(key, 1); // table[key] := 1;
+end;
+
+function TDataMatrixDetector.sampleGrid(image: TBitMatrix;
+  topLeft, bottomLeft, bottomRight, topRight: IResultPoint;
+  dimensionX, dimensionY: Integer): TBitMatrix;
+begin
+  // TGridSampler.instance
+  Result := TDefaultGridSampler.sampleGrid(image, dimensionX, dimensionY, 0.5,
+    0.5, (dimensionX - 0.5), 0.5, (dimensionX - 0.5), (dimensionY - 0.5), 0.5,
+    (dimensionY - 0.5), topLeft.X, topLeft.Y, topRight.X, topRight.Y,
+    bottomRight.X, bottomRight.Y, bottomLeft.X, bottomLeft.Y);
+end;
+
+/// <summary>
+/// Counts the number of black/white transitions between two points, using something like Bresenham's algorithm.
+/// </summary>
+function TDataMatrixDetector.transitionsBetween(Afrom, Ato: IResultPoint)
+  : TResultPointsAndTransitions;
+var
+  temp, fromX, fromY, toX, toY: Integer;
+  steep: Boolean;
+  dx, dy: Int64;
+  xstep, ystep, Transitions: Integer;
+  error: Int64;
+  inBlack, isBlack: Boolean;
+  X, Y: Integer;
+begin
+  // See QR Code Detector, sizeOfBlackWhiteBlackRun()
+  fromX := Trunc(Afrom.X);
+  fromY := Trunc(Afrom.Y);
+  toX := Trunc(Ato.X);
+  toY := Trunc(Ato.Y);
+  steep := (Abs((toY - fromY)) > Abs((toX - fromX)));
+  if (steep) then
+  begin
+    temp := fromX;
+    fromX := fromY;
+    fromY := temp;
+    temp := toX;
+    toX := toY;
+    toY := temp;
+  end;
+
+  dx := Abs(toX - fromX);
+  dy := Abs(toY - fromY);
+  error := TMathUtils.Asr(-dx, 1);
+  if (fromY < toY) then
+    ystep := 1
+  else
+    ystep := -1;
+  if (fromX < toX) then
+    xstep := 1
+  else
+    xstep := -1;
+  Transitions := 0;
+  if steep then
+    inBlack := Fimage[fromY, fromX]
+  else
+    inBlack := Fimage[fromX, fromY];
+
+  X := fromX;
+  Y := fromY;
+  while ((X <> toX)) do
+  begin
+    if steep then
+      isBlack := Fimage[Y, X]
+    else
+      isBlack := Fimage[X, Y];
+
+    if (isBlack <> inBlack) then
+    begin
+      Inc(Transitions);
+      inBlack := isBlack;
+    end;
+    Inc(error, dy);
+    if (error > 0) then
+    begin
+      if (Y = toY) then
+        break;
+      Inc(Y, ystep);
+      Dec(error, dx);
+    end;
+    Inc(X, xstep)
+  end;
+
+  Result := TResultPointsAndTransitions.Create(Afrom, Ato, Transitions);
+end;
+
+{ TResultPointsAndTransitions }
+
+constructor TDataMatrixDetector.TResultPointsAndTransitions.Create
+  (From: IResultPoint; To_: IResultPoint; Transitions: Integer);
+begin
+  Self.From := From;
+  Self.To_ := To_;
+  Self.Transitions := Transitions;
+end;
+
+destructor TDataMatrixDetector.TResultPointsAndTransitions.Destroy;
+begin
+
+// if (Assigned(Self.From)) then
+//    Self.From := nil;
+//
+// if (Assigned(Self.To_)) then
+//    Self.To_:=nil;
+
+  inherited;
+end;
+
+function TDataMatrixDetector.TResultPointsAndTransitions.ToString: string;
+begin
+  Result := From.ToString + '/' + To_.ToString + '/' + IntToStr(Transitions);
+end;
+
+function TDataMatrixDetector.TResultPointsAndTransitionsComparator.Compare
+  (const o1, o2: TResultPointsAndTransitions): Integer;
+begin
+  Result := (o1.Transitions - o2.Transitions);
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.AlignmentPattern.pas

@@ -0,0 +1,69 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E.Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.AlignmentPattern;
+interface
+uses ZXing.ResultPoint;
+
+type
+  /// <summary>
+  ///  As we did for ResultPoint, we use an interfaced object to implement automatic deallocation
+  /// of TAligmnentPattern instances
+  /// the actual implementation of this interface is in unit ZXing.QrCode.Internal.AlignmentPatternImplementation
+  /// </summary>
+  IAlignmentPattern = interface(IResultPoint)
+     ['{8C0A5D01-9620-42B6-BE3E-9C40717B5B38}']
+    /// <summary> <p>Determines if this alignment pattern "about equals" an alignment pattern at the stated
+    /// position and size -- meaning, it is at nearly the same center with nearly the same size.</p>
+    /// </summary>
+    function aboutEquals(const moduleSize, i, j: Single): Boolean;
+
+    /// <summary>
+    /// Combines this object's current estimate of a finder pattern position and module size
+    /// with a new estimate. It returns a new {@code FinderPattern} containing an average of the two.
+    /// </summary>
+    /// <param name="i">The i.</param>
+    /// <param name="j">The j.</param>
+    /// <param name="newModuleSize">New size of the module.</param>
+    /// <returns></returns>
+    function combineEstimate(const i, j, newModuleSize: Single): IAlignmentPattern;
+  end;
+
+
+  /// <summary>
+  ///  contains all static methods for using IAlignmentPatterns instances
+  /// </summary>
+  TAlignmentPatternHelpers = class
+    /// <summary>
+    ///  IAlignmentPattern instances must be obtained by calling this function
+    /// </summary>
+    class function CreateAlignmentPattern(const posX, posY, estimatedModuleSize: Single):IAlignmentPattern;
+  end;
+
+implementation
+uses ZXing.QrCode.Internal.AlignmentPatternImplementation;
+
+{ TAlignmentPatternHelpers }
+class function TAlignmentPatternHelpers.CreateAlignmentPattern(const posX, posY, estimatedModuleSize: Single):IAlignmentPattern;
+begin
+    result := ZXing.QrCode.Internal.AlignmentPatternImplementation.NewAlignmentPattern(posX,posY,estimatedModuleSize);
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.AlignmentPatternFinder.pas

@@ -0,0 +1,407 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E.Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.AlignmentPatternFinder;
+
+interface
+
+uses 
+  System.SysUtils,
+  System.Math,
+  System.Generics.Collections,
+  ZXing.Common.BitMatrix,
+  ZXing.QrCode.Internal.AlignmentPattern, // nullableType,
+  ZXing.ResultPoint,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary> <p>This class attempts to find alignment patterns in a QR Code. Alignment patterns look like finder
+  /// patterns but are smaller and appear at regular intervals throughout the image.</p>
+  ///
+  /// <p>At the moment this only looks for the bottom-right alignment pattern.</p>
+  ///
+  /// <p>This is mostly a simplified copy of {@link FinderPatternFinder}. It is copied,
+  /// pasted and stripped down here for maximum performance but does unfortunately duplicate
+  /// some code.</p>
+  ///
+  /// <p>This class is thread-safe but not reentrant. Each thread must allocate its own object.</p>
+  ///
+  /// </summary>
+  TAlignmentPatternFinder = class sealed
+  private
+    image: TBitMatrix;
+    possibleCenters: TList<IAlignmentPattern>;
+    startX, startY: Integer;
+    width, height: Integer;
+    moduleSize: Single;
+    crossCheckStateCount: TArray<Integer>;
+    resultPointCallback: TResultPointCallback;
+
+    /// <summary> Given a count of black/white/black pixels just seen and an end position,
+    /// figures the location of the center of this black/white/black run.
+    /// </summary>
+    class function centerFromEnd(const stateCount: TArray<Integer>;
+      const pEnd: Integer): Single; static;
+
+    /// <param name="stateCount">count of black/white/black pixels just read
+    /// </param>
+    /// <returns> true iff the proportions of the counts is close enough to the 1/1/1 ratios
+    /// used by alignment patterns to be considered a match
+    /// </returns>
+    function foundPatternCross(const stateCount: TArray<Integer>): Boolean;
+
+    /// <summary>
+    ///   <p>After a horizontal scan finds a potential alignment pattern, this method
+    /// "cross-checks" by scanning down vertically through the center of the possible
+    /// alignment pattern to see if the same proportion is detected.</p>
+    /// </summary>
+    /// <param name="startI">row where an alignment pattern was detected</param>
+    /// <param name="centerJ">center of the section that appears to cross an alignment pattern</param>
+    /// <param name="maxCount">maximum reasonable number of modules that should be
+    /// observed in any reading state, based on the results of the horizontal scan</param>
+    /// <param name="originalStateCountTotal">The original state count total.</param>
+    /// <returns>
+    /// vertical center of alignment pattern, or null if not found
+    /// </returns>
+    function crossCheckVertical(const startI, centerJ, maxCount,
+      originalStateCountTotal: Integer): Single;
+
+    /// <summary> <p>This is called when a horizontal scan finds a possible alignment pattern. It will
+    /// cross check with a vertical scan, and if successful, will see if this pattern had been
+    /// found on a previous horizontal scan. If so, we consider it confirmed and conclude we have
+    /// found the alignment pattern.</p>
+    ///
+    /// </summary>
+    /// <param name="stateCount">reading state module counts from horizontal scan
+    /// </param>
+    /// <param name="i">row where alignment pattern may be found
+    /// </param>
+    /// <param name="j">end of possible alignment pattern in row
+    /// </param>
+    /// <returns> {@link TAlignmentPattern} if we have found the same pattern twice, or null if not
+    /// </returns>
+    function handlePossibleCenter(const stateCount: TArray<Integer>;
+      const i, j: Integer): IAlignmentPattern;
+  public
+    /// <summary> <p>Creates a finder that will look in a portion of the whole image.</p>
+    ///
+    /// </summary>
+    /// <param name="image">image to search
+    /// </param>
+    /// <param name="startX">left column from which to start searching
+    /// </param>
+    /// <param name="startY">top row from which to start searching
+    /// </param>
+    /// <param name="width">width of region to search
+    /// </param>
+    /// <param name="height">height of region to search
+    /// </param>
+    /// <param name="moduleSize">estimated module size so far
+    /// </param>
+    constructor Create(const image: TBitMatrix; const startX, startY,
+      width, height: Integer; const moduleSize: Single;
+      resultPointCallback: TResultPointCallback);
+    destructor Destroy; override;
+
+    /// <summary> <p>This method attempts to find the bottom-right alignment pattern in the image. It is a bit messy since
+    /// it's pretty performance-critical and so is written to be fast foremost.</p>
+    ///
+    /// </summary>
+    /// <returns> {@link TAlignmentPattern} if found
+    /// </returns>
+    function find: IAlignmentPattern;
+  end;
+
+implementation
+
+{ TAlignmentPatternFinder }
+
+constructor TAlignmentPatternFinder.Create(const image: TBitMatrix;
+  const startX, startY, width, height: Integer; const moduleSize: Single;
+  resultPointCallback: TResultPointCallback);
+begin
+  Self.image := image;
+  Self.possibleCenters := TList<IAlignmentPattern>.Create;
+  Self.possibleCenters.Capacity := 5;
+  Self.startX := startX;
+  Self.startY := startY;
+  Self.width := width;
+  Self.height := height;
+  Self.moduleSize := moduleSize;
+  Self.crossCheckStateCount := TArray<Integer>.Create(0, 0, 0);
+  Self.resultPointCallback := resultPointCallback;
+end;
+
+destructor TAlignmentPatternFinder.Destroy;
+begin
+  if possibleCenters<>nil then
+     possibleCenters.Clear;
+  FreeAndNil(self.possibleCenters);
+  self.crossCheckStateCount := nil;
+  self.resultPointCallback :=nil;
+  inherited;
+end;
+
+function TAlignmentPatternFinder.find: IAlignmentPattern;
+var
+  confirmed: IAlignmentPattern;
+  maxJ, middleI, iGen, i, j, currentState: Integer;
+  stateCount: TArray<Integer>;
+begin
+  startX := Self.startX;
+  height := Self.height;
+  maxJ := startX + self.width;
+  middleI := Self.startY + (TMathUtils.Asr(height, 1));
+  // We are looking for black/white/black modules in 1:1:1 ratio;
+  // this tracks the number of black/white/black modules seen so far
+  stateCount := TArray<Integer>.Create(0, 0, 0);
+  for iGen := 0 to Pred(height) do
+  begin
+    // Search from middle outwards
+    if ((iGen and 1) = 0)
+    then
+       i := middleI + (TMathUtils.Asr(iGen + 1, 1))
+    else
+       i := middleI + (-1 * TMathUtils.Asr(iGen + 1, 1));
+
+    stateCount[0] := 0;
+    stateCount[1] := 0;
+    stateCount[2] := 0;
+    j := startX;
+    // Burn off leading white pixels before anything else; if we start in the middle of
+    // a white run, it doesn't make sense to count its length, since we don't know if the
+    // white run continued to the left of the start point
+    while ((j < maxJ) and (not Self.image[j, i])) do
+      Inc(j);
+
+    currentState := 0;
+    while ((j < maxJ)) do
+    begin
+      if (Self.image[j, i]) then
+      begin
+        // Black pixel
+        if (currentState = 1) then
+        begin
+          // Counting black pixels
+          Inc(stateCount[currentState]);
+        end else
+        begin
+          // Counting white pixels
+          if (currentState = 2) then
+          begin
+            // A winner?
+            if (Self.foundPatternCross(stateCount)) then
+            begin
+              // Yes
+              confirmed := self.handlePossibleCenter(stateCount, i, j);
+              if (confirmed <> nil) then
+              begin
+                result := confirmed;
+                exit
+              end;
+            end;
+            stateCount[0] := stateCount[2];
+            stateCount[1] := 1;
+            stateCount[2] := 0;
+            currentState := 1;
+          end else
+          begin
+            Inc(currentState);
+            Inc(stateCount[currentState]);
+          end;
+        end;
+      end else
+      begin
+        // White pixel
+        if (currentState = 1)
+        then
+           // Counting black pixels
+           Inc(currentState);
+        Inc(stateCount[currentState])
+      end;
+      Inc(j)
+    end;
+
+    if (Self.foundPatternCross(stateCount)) then
+    begin
+      confirmed := self.handlePossibleCenter(stateCount, i, maxJ);
+      if (confirmed <> nil) then
+      begin
+        result := confirmed;
+        exit;
+      end;
+    end;
+  end;
+
+  // Hmm, nothing we saw was observed and confirmed twice. If we had
+  // any guess at all, return it.
+  if (Self.possibleCenters.Count <> 0)
+  then
+     Result := Self.possibleCenters[0]
+  else
+     Result := nil;
+end;
+
+class function TAlignmentPatternFinder.centerFromEnd(
+  const stateCount: TArray<Integer>; const pEnd: Integer): Single;
+begin
+  Result := (pEnd - stateCount[2]) - (stateCount[1] / 2.0);
+  if (Single.IsNaN(Result))
+  then
+     Result := -1;
+end;
+
+function TAlignmentPatternFinder.foundPatternCross(
+  const stateCount: TArray<Integer>): Boolean;
+var
+  maxVariance: Single;
+  i: Integer;
+begin
+  maxVariance := moduleSize / 2;
+  for i := 0 to Pred(3) do
+  begin
+    if (Abs(self.moduleSize - stateCount[i]) >= maxVariance) then
+    begin
+      Result := false;
+      exit;
+    end;
+  end;
+  Result := true;
+end;
+
+function TAlignmentPatternFinder.crossCheckVertical(const startI, centerJ,
+  maxCount, originalStateCountTotal: Integer): Single;
+var
+  maxI,
+  i, stateCountTotal: Integer;
+  stateCount: TArray<Integer>;
+begin
+  maxI := Self.image.height;
+  stateCount := Self.crossCheckStateCount;
+  stateCount[0] := 0;
+  stateCount[1] := 0;
+  stateCount[2] := 0;
+
+  // Start counting up from center
+  i := startI;
+  while (((i >= 0) and self.image[centerJ, i]) and
+          (stateCount[1] <= maxCount)) do
+  begin
+    Inc(stateCount[1]);
+    Dec(i);
+  end;
+  // If already too many modules in this state or ran off the edge:
+  if ((i < 0) or (stateCount[1] > maxCount)) then
+  begin
+    Result := -1;
+    exit;
+  end;
+  while (((i >= 0) and (not Self.image[centerJ, i])) and
+          (stateCount[0] <= maxCount)) do
+  begin
+    Inc(stateCount[0]);
+    Dec(i);
+  end;
+  if (stateCount[0] > maxCount) then
+  begin
+    Result := -1;
+    exit;
+  end;
+
+  // Now also count down from center
+  i := (startI + 1);
+  while (((i < maxI) and Self.image[centerJ, i]) and
+           (stateCount[1] <= maxCount)) do
+  begin
+    Inc(stateCount[1]);
+    Inc(i);
+  end;
+  if ((i = maxI) or (stateCount[1] > maxCount)) then
+  begin
+    Result := -1;
+    exit;
+  end;
+  while (((i < maxI) and not self.image[centerJ, i]) and
+          (stateCount[2] <= maxCount)) do
+  begin
+    Inc(stateCount[2]);
+    Inc(i);
+  end;
+  if (stateCount[2] > maxCount) then
+  begin
+    Result := -1;
+    exit;
+  end;
+
+  stateCountTotal := (stateCount[0] + stateCount[1] + stateCount[2]);
+  if ((5 * Abs(stateCountTotal - originalStateCountTotal)) >=
+      (2 * originalStateCountTotal)) then
+  begin
+    Result := -1;
+    exit;
+  end;
+
+  if Self.foundPatternCross(stateCount)
+  then
+     Result := TAlignmentPatternFinder.centerFromEnd(stateCount, i)
+  else
+     Result := -1;
+end;
+
+function TAlignmentPatternFinder.handlePossibleCenter(
+  const stateCount: TArray<Integer>; const i, j: Integer): IAlignmentPattern;
+var
+  center, point: IAlignmentPattern;
+  stateCountTotal: Integer;
+  estimatedModuleSize: Single;
+  centerJ, centerI: Single;
+begin
+  stateCountTotal := (stateCount[0] + stateCount[1] + stateCount[2]);
+  centerJ := TAlignmentPatternFinder.centerFromEnd(stateCount, j);
+  if (centerJ = -1) then
+  begin
+    Result := nil;
+    exit;
+  end;
+  centerI := crossCheckVertical(i, Floor(centerJ), (2 * stateCount[1]),
+    stateCountTotal);
+  if (centerI <> -1) then
+  begin
+    estimatedModuleSize := (stateCount[0] + stateCount[1] + stateCount[2]) / 3.0;
+    for center in Self.possibleCenters do
+    begin
+      // Look for about the same center and module size:
+      if (center.aboutEquals(estimatedModuleSize, centerI, centerJ)) then
+      begin
+        Result := center.combineEstimate(centerI, centerJ, estimatedModuleSize);
+        exit;
+      end;
+    end;
+    // Hadn't found this before; save it
+    point := TAlignmentPatternHelpers.CreateAlignmentPattern(centerJ, centerI, estimatedModuleSize);
+    Self.possibleCenters.Add(point);
+    if Assigned(resultPointCallback)
+    then
+       Self.resultPointCallback(point);
+  end;
+  Result := nil;
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.AlignmentPatternImplementation.pas

@@ -0,0 +1,112 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E.Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.AlignmentPatternImplementation;
+
+
+interface
+
+uses
+  ZXing.QrCode.Internal.AlignmentPattern,
+  ZXing.ResultPoint,
+  ZXing.ResultPointImplementation;
+
+// this is the function that actually creates IAlignmentPattern instances.
+// the actual implementation of the interface is totally hidden to all other units,
+// since even its declaration is in the implementation section of this unit
+function NewAlignmentPattern(const posX, posY, estimatedModuleSize: Single):IAlignmentPattern;
+
+
+implementation
+
+{ TAlignmentPattern }
+
+
+type
+  /// <summary> <p>Encapsulates an alignment pattern, which are the smaller square patterns found in
+  /// all but the simplest QR Codes.</p>
+  ///
+  /// </summary>
+  TAlignmentPattern = class sealed(TResultPoint,IResultPoint,IAlignmentPattern)
+  private
+    estimatedModuleSize: Single;
+    constructor Create(const posX, posY, estimatedModuleSize: Single);
+
+    /// <summary> <p>Determines if this alignment pattern "about equals" an alignment pattern at the stated
+    /// position and size -- meaning, it is at nearly the same center with nearly the same size.</p>
+    /// </summary>
+    function aboutEquals(const moduleSize, i, j: Single): Boolean;
+
+    /// <summary>
+    /// Combines this object's current estimate of a finder pattern position and module size
+    /// with a new estimate. It returns a new {@code FinderPattern} containing an average of the two.
+    /// </summary>
+    /// <param name="i">The i.</param>
+    /// <param name="j">The j.</param>
+    /// <param name="newModuleSize">New size of the module.</param>
+    /// <returns></returns>
+    function combineEstimate(const i, j,
+      newModuleSize: Single): IAlignmentPattern;
+  end;
+
+
+constructor TAlignmentPattern.Create(const posX, posY,
+  estimatedModuleSize: Single);
+begin
+  inherited Create(posX, posY);
+
+  Self.estimatedModuleSize := estimatedModuleSize;
+end;
+
+function TAlignmentPattern.aboutEquals(const moduleSize, i, j: Single): Boolean;
+var
+  moduleSizeDiff: Single;
+begin
+  if ((Abs(i - Self.y) <= moduleSize) and
+      (Abs(j - Self.x) <= moduleSize)) then
+  begin
+    moduleSizeDiff := Abs(moduleSize - self.estimatedModuleSize);
+    Result := ((moduleSizeDiff <= 1) or
+               (moduleSizeDiff <= self.estimatedModuleSize));
+  end else Result := false;
+end;
+
+function TAlignmentPattern.combineEstimate(const i, j,
+  newModuleSize: Single): IAlignmentPattern;
+var
+  combinedX,
+  combinedY,
+  combinedModuleSize : Single;
+begin
+  combinedX := (self.x + j) / 2.0;
+  combinedY := (self.y + i) / 2.0;
+  combinedModuleSize := (estimatedModuleSize + newModuleSize) / 2.0;
+  Result := TAlignmentPattern.Create(combinedX, combinedY, combinedModuleSize);
+end;
+
+
+
+
+function NewAlignmentPattern(const posX, posY, estimatedModuleSize: Single):IAlignmentPattern;
+begin
+   result := TAlignmentPattern.Create(posX,posY,estimatedModuleSize);
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.Detector.pas

@@ -0,0 +1,492 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.Detector;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Math,
+  Generics.Collections,
+  ZXing.Common.BitMatrix,
+  ZXing.ResultPoint,
+  ZXing.Common.DetectorResult,
+  ZXing.DecodeHintType,
+  ZXing.Common.PerspectiveTransform,
+  ZXing.QrCode.Internal.FinderPatternInfo,
+  ZXing.QrCode.Internal.FinderPatternFinder,
+  ZXing.QrCode.Internal.FinderPattern,
+  ZXing.QrCode.Internal.AlignmentPattern,
+  ZXing.QrCode.Internal.AlignmentPatternFinder,
+  ZXing.QrCode.Internal.Version,
+  ZXing.DefaultGridSampler,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// <p>Encapsulates logic that can detect a QR Code in an image, even if the QR Code
+  /// is rotated or skewed, or partially obscured.</p>
+  /// </summary>
+  TDetector = class
+  private
+    FImage: TBitMatrix;
+    FResultPointCallback: TResultPointCallback;
+
+    function calculateModuleSizeOneWay(pattern: IResultpoint;
+      otherPattern: IResultpoint): Single;
+
+    class function computeDimension(topLeft: IResultpoint;
+      topRight: IResultpoint; bottomLeft: IResultpoint; moduleSize: Single;
+      var dimension: Integer): boolean; static;
+
+    class function createTransform(const topLeft, topRight, bottomLeft,
+      AlignmentPattern: IResultpoint; const dimension: Integer)
+      : TPerspectiveTransform; static;
+
+    class function sampleGrid(image: TBitMatrix;
+      transform: TPerspectiveTransform; dimension: Integer): TBitMatrix; static;
+    function sizeOfBlackWhiteBlackRun(fromX: Integer; fromY: Integer;
+      toX: Integer; toY: Integer): Single;
+    function sizeOfBlackWhiteBlackRunBothWays(fromX: Integer; fromY: Integer;
+      toX: Integer; toY: Integer): Single;
+  protected
+    function calculateModuleSize(const topLeft, topRight,
+      bottomLeft: IResultPoint): Single; virtual;
+
+    function findAlignmentInRegion(const overallEstModuleSize: Single;
+      const estAlignmentX, estAlignmentY: Integer;
+      const allowanceFactor: Single): IAlignmentPattern;
+
+    /// <summary>
+    /// Processes the finder pattern info.
+    /// </summary>
+    /// <param name="info">The info.</param>
+    /// <returns></returns>
+    function processFinderPatternInfo(const info: TFinderPatternInfo)
+      : TDetectorResult; virtual;
+  public
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Detector"/> class.
+    /// </summary>
+    /// <param name="image">The image.</param>
+    constructor Create(const image: TBitMatrix);
+    destructor Destroy; override;
+
+    /// <summary>
+    /// <p>Detects a QR Code in an image.</p>
+    /// </summary>
+    /// <returns>
+    /// <see cref="TDetectorResult"/> encapsulating results of detecting a QR Code
+    /// </returns>
+    function detect(): TDetectorResult; overload;
+
+    /// <summary>
+    /// <p>Detects a QR Code in an image.</p>
+    /// </summary>
+    /// <param name="hints">optional hints to detector</param>
+    /// <returns>
+    /// <see cref="TDetectorResult"/> encapsulating results of detecting a QR Code
+    /// </returns>
+    function detect(const hints: TDictionary<TDecodeHintType, TObject>)
+      : TDetectorResult; overload;
+
+    property image: TBitMatrix read FImage;
+    property ResultPointCallback: TResultPointCallback
+      read FResultPointCallback;
+  end;
+
+implementation
+
+{ TDetector }
+
+constructor TDetector.Create(const image: TBitMatrix);
+begin
+  FImage := image;
+end;
+
+destructor TDetector.Destroy;
+begin
+  FResultPointCallback := nil;
+  inherited;
+end;
+
+function TDetector.calculateModuleSize(const topLeft, topRight,
+  bottomLeft: IResultPoint): Single;
+begin
+  Result := ((self.calculateModuleSizeOneWay(topLeft, topRight) +
+    self.calculateModuleSizeOneWay(topLeft, bottomLeft)) / 2)
+end;
+
+function TDetector.calculateModuleSizeOneWay(pattern: IResultPoint;
+  otherPattern: IResultPoint): Single;
+var
+  moduleSizeEst1, moduleSizeEst2: Single;
+
+begin
+  moduleSizeEst1 := self.sizeOfBlackWhiteBlackRunBothWays(Floor(pattern.X),
+    Floor(pattern.Y), Floor(otherPattern.X), Floor(otherPattern.Y));
+  moduleSizeEst2 := self.sizeOfBlackWhiteBlackRunBothWays(Floor(otherPattern.X),
+    Floor(otherPattern.Y), Floor(pattern.X), Floor(pattern.Y));
+
+  if (moduleSizeEst1 = -1) then
+  begin
+    Result := (moduleSizeEst2 / 7);
+    exit
+  end;
+
+  if (moduleSizeEst2 = -1) then
+  begin
+    Result := (moduleSizeEst1 / 7);
+    exit
+  end;
+
+  Result := ((moduleSizeEst1 + moduleSizeEst2) / 14);
+end;
+
+class function TDetector.computeDimension(topLeft: IResultPoint;
+  topRight: IResultPoint; bottomLeft: IResultPoint; moduleSize: Single;
+  var dimension: Integer): boolean;
+
+var
+  tltrCentersDimension, tlblCentersDimension: Integer;
+begin
+  tltrCentersDimension :=
+    round((TResultPointHelpers.distance(topLeft, topRight) / moduleSize));
+  tlblCentersDimension :=
+    round((TResultPointHelpers.distance(topLeft, bottomLeft) / moduleSize));
+  dimension := TMathUtils.Asr
+    ((tltrCentersDimension + tlblCentersDimension), 1) + 7;
+
+  case (dimension and 3) of
+    0: inc(dimension); // below a valid dimension
+    1: ; // exactly on a valid dimension e.g. 21, 25, 29, ..., 177
+    2: dec(dimension); // above a valid dimension
+    3: Exit(False); // exactly between two valid dimensions
+  end;
+
+  Result := True;
+end;
+
+class function TDetector.createTransform(const topLeft, topRight, bottomLeft,
+  AlignmentPattern: IResultPoint; const dimension: Integer)
+  : TPerspectiveTransform;
+var
+  bottomRightX, bottomRightY, sourceBottomRightX, sourceBottomRightY,
+    dimMinusThree: Single;
+begin
+  dimMinusThree := (dimension - 3.5);
+  if (AlignmentPattern <> nil) then
+  begin
+    bottomRightX := AlignmentPattern.X;
+    bottomRightY := AlignmentPattern.Y;
+    sourceBottomRightX := (dimMinusThree - 3);
+    sourceBottomRightY := sourceBottomRightX;
+  end
+  else
+  begin
+    bottomRightX := ((topRight.X - topLeft.X) + bottomLeft.X);
+    bottomRightY := ((topRight.Y - topLeft.Y) + bottomLeft.Y);
+    sourceBottomRightX := dimMinusThree;
+    sourceBottomRightY := sourceBottomRightX;
+  end;
+
+  Result := TPerspectiveTransform.quadrilateralToQuadrilateral(3.5, 3.5,
+    dimMinusThree, 3.5, sourceBottomRightX, sourceBottomRightY, 3.5,
+    dimMinusThree, topLeft.X, topLeft.Y, topRight.X, topRight.Y, bottomRightX,
+    bottomRightY, bottomLeft.X, bottomLeft.Y);
+end;
+
+function TDetector.detect: TDetectorResult;
+begin
+  Result := self.detect(nil)
+end;
+
+function TDetector.detect(const hints: TDictionary<TDecodeHintType, TObject>)
+  : TDetectorResult;
+var
+  obj: TObject;
+  info: TFinderPatternInfo;
+  finder: TFinderPatternFinder;
+begin
+  Result := nil;
+
+  if ((hints = nil) or
+    (not hints.ContainsKey(TDecodeHintType.NEED_RESULT_POINT_CALLBACK))) then
+    FResultPointCallback := nil
+  else
+  begin
+    obj := hints[TDecodeHintType.NEED_RESULT_POINT_CALLBACK];
+    if (obj is TResultPointEventObject) then
+      FResultPointCallback := TResultPointEventObject(obj).Event;
+  end;
+
+  finder := TFinderPatternFinder.Create(FImage, ResultPointCallback);
+  try
+    info := finder.find(hints);
+    if Assigned(info) then
+    begin
+      Result := processFinderPatternInfo(info);
+      info.Free;
+    end;
+  finally
+    finder.Free;
+  end;
+end;
+
+function TDetector.processFinderPatternInfo(const info: TFinderPatternInfo)
+  : TDetectorResult;
+var
+  topLeft, topRight, bottomLeft: IFinderPattern;
+  moduleSize, bottomRightX, bottomRightY, correctionToTopLeft: Single;
+  dimension, i, modulesBetweenFPCenters, estAlignmentX, estAlignmentY: Integer;
+  points: TArray<IResultPoint>;
+  provisionalVersion: TVersion;
+  transform: TPerspectiveTransform;
+  bits: TBitMatrix;
+  AlignmentPattern: IAlignmentPattern;
+begin
+  Result := nil;
+
+  topLeft := info.topLeft;
+  topRight := info.topRight;
+  bottomLeft := info.bottomLeft;
+
+  moduleSize := calculateModuleSize(topLeft, topRight, bottomLeft);
+  if (moduleSize < 1.0) then
+    exit;
+
+  if (not TDetector.computeDimension(topLeft, topRight, bottomLeft, moduleSize,
+    dimension)) then
+    exit;
+
+  provisionalVersion := TVersion.getProvisionalVersionForDimension(dimension);
+  if (provisionalVersion = nil) then
+    exit;
+
+  modulesBetweenFPCenters := (provisionalVersion.DimensionForVersion - 7);
+
+  AlignmentPattern := nil;
+  // Anything above version 1 has an alignment pattern
+  if (Length(provisionalVersion.AlignmentPatternCenters) > 0) then
+  begin
+    // Guess where a "bottom right" finder pattern would have been
+    bottomRightX := (topRight.X - topLeft.X) + bottomLeft.X;
+    bottomRightY := (topRight.Y - topLeft.Y) + bottomLeft.Y;
+
+    // Estimate that alignment pattern is closer by 3 modules
+    // from "bottom right" to known top left location
+    correctionToTopLeft := (1.0 - (3.0 / modulesBetweenFPCenters));
+    estAlignmentX :=
+      Floor(topLeft.X + (correctionToTopLeft * (bottomRightX - topLeft.X)));
+    estAlignmentY :=
+      Floor(topLeft.Y + (correctionToTopLeft * (bottomRightY - topLeft.Y)));
+    i := 4;
+    while ((i <= 16)) do
+    begin
+      AlignmentPattern := findAlignmentInRegion(moduleSize, estAlignmentX,
+        estAlignmentY, i);
+      if (AlignmentPattern <> nil) then
+        break;
+      i := (i shl 1);
+    end;
+    // If we didn't find alignment pattern... well try anyway without it
+  end;
+
+  transform := TDetector.createTransform(topLeft, topRight, bottomLeft,
+    AlignmentPattern, dimension);
+  try
+    bits := TDetector.sampleGrid(FImage, transform, dimension);
+  finally
+    transform.Free;
+  end;
+
+  if (bits = nil) then
+    exit;
+
+  if (AlignmentPattern = nil) then
+    points := TArray<IResultPoint>.Create(bottomLeft, topLeft, topRight)
+  else
+    points := TArray<IResultPoint>.Create(bottomLeft, topLeft, topRight,
+      AlignmentPattern);
+
+  Result := TDetectorResult.Create(bits, points);
+end;
+
+function TDetector.findAlignmentInRegion(const overallEstModuleSize: Single;
+  const estAlignmentX, estAlignmentY: Integer; const allowanceFactor: Single)
+  : IAlignmentPattern;
+var
+  allowance, alignmentAreaRightX, alignmentAreaLeftX, alignmentAreaTopY,
+    alignmentAreaBottomY: Integer;
+  alignmentFinder: TAlignmentPatternFinder;
+  candidateResult: IAlignmentPattern;
+begin
+  Result := nil;
+
+  allowance := Floor(allowanceFactor * overallEstModuleSize);
+  alignmentAreaLeftX := System.Math.Max(0, (estAlignmentX - allowance));
+  alignmentAreaRightX := System.Math.Min((FImage.Width - 1),
+    (estAlignmentX + allowance));
+
+  if ((alignmentAreaRightX - alignmentAreaLeftX) < (overallEstModuleSize * 3))
+  then
+    exit;
+
+  alignmentAreaTopY := System.Math.Max(0, (estAlignmentY - allowance));
+
+  alignmentAreaBottomY := System.Math.Min((FImage.Height - 1),
+    (estAlignmentY + allowance));
+
+  alignmentFinder := TAlignmentPatternFinder.Create(FImage, alignmentAreaLeftX,
+    alignmentAreaTopY, (alignmentAreaRightX - alignmentAreaLeftX),
+    (alignmentAreaBottomY - alignmentAreaTopY), overallEstModuleSize,
+    self.ResultPointCallback);
+
+  candidateResult := alignmentFinder.find;
+
+  if candidateResult = nil then
+    Result := nil
+  else
+    Result := candidateResult;
+
+  FreeAndNil(alignmentFinder);
+end;
+
+class function TDetector.sampleGrid(image: TBitMatrix;
+  transform: TPerspectiveTransform; dimension: Integer): TBitMatrix;
+begin
+  Result := TDefaultGridSampler.sampleGrid(image, dimension, dimension,
+    transform)
+end;
+
+function TDetector.sizeOfBlackWhiteBlackRun(fromX: Integer; fromY: Integer;
+  toX: Integer; toY: Integer): Single;
+var
+  steep: boolean;
+  temp, dx, dy, xstep, ystep, X, Y, state, xlimit, realx, realy, error: Integer;
+begin
+  steep := Abs(toY - fromY) > Abs(toX - fromX);
+  if (steep) then
+  begin
+    temp := fromX;
+    fromX := fromY;
+    fromY := temp;
+    temp := toX;
+    toX := toY;
+    toY := temp
+  end;
+
+  dx := Abs(toX - fromX);
+  dy := Abs(toY - fromY);
+  error := TMathUtils.Asr(-dx, 1);
+  if (fromX < toX) then
+    xstep := 1
+  else
+    xstep := -1;
+
+  if (fromY < toY) then
+    ystep := 1
+  else
+    ystep := -1;
+
+  state := 0;
+  xlimit := (toX + xstep);
+  X := fromX;
+  Y := fromY;
+  while ((X <> xlimit)) do
+  begin
+    if steep then
+      realx := Y
+    else
+      realx := X;
+    if steep then
+      realy := X
+    else
+      realy := Y;
+
+    if ((state = 1) = FImage[realx, realy]) then
+    begin
+      if (state = 2) then
+      begin
+        Result := TMathUtils.distance(X, Y, fromX, fromY);
+        exit
+      end;
+      inc(state)
+    end;
+
+    inc(error, dy);
+    if (error > 0) then
+    begin
+      if (Y = toY) then
+        break;;
+      inc(Y, ystep);
+      dec(error, dx)
+    end;
+    inc(X, xstep)
+  end;
+
+  if (state = 2) then
+  begin
+    Result := TMathUtils.distance((toX + xstep), toY, fromX, fromY);
+    exit
+  end;
+
+  Result := Single.NaN;
+end;
+
+function TDetector.sizeOfBlackWhiteBlackRunBothWays(fromX: Integer;
+  fromY: Integer; toX: Integer; toY: Integer): Single;
+var
+  scale: Double;
+  otherToX, otherToY: Integer;
+begin
+  Result := sizeOfBlackWhiteBlackRun(fromX, fromY, toX, toY);
+  scale := 1;
+  otherToX := (fromX - (toX - fromX));
+  if (otherToX < 0) then
+  begin
+    scale := (fromX / (fromX - otherToX));
+    otherToX := 0
+  end
+  else if (otherToX >= FImage.Width) then
+  begin
+    scale := (((FImage.Width - 1) - fromX) / (otherToX - fromX));
+    otherToX := (FImage.Width - 1)
+  end;
+  otherToY := Round(fromY - ((toY - fromY) * scale));
+  scale := 1;
+  if (otherToY < 0) then
+  begin
+    scale := fromY / (fromY - otherToY);
+    otherToY := 0
+  end
+  else if (otherToY >= FImage.Height) then
+  begin
+    scale := (((FImage.Height - 1) - fromY) / (otherToY - fromY));
+    otherToY := (FImage.Height - 1)
+  end;
+  otherToX := Round(fromX + (otherToX - fromX) * scale);
+  Result := Result + self.sizeOfBlackWhiteBlackRun(fromX, fromY, otherToX,
+    otherToY);
+
+  Result := (Result - 1);
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.FinderPattern.pas

@@ -0,0 +1,147 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.FinderPattern;
+
+interface
+
+uses
+  ZXing.ResultPoint;
+
+type
+
+  /// <summary>
+  ///  As we did for ResultPoint, we use an interfaced object to implement automatic deallocation
+  /// of TAligmnentPattern instances
+  /// the actual implementation of this interface is in unit ZXing.QrCode.Internal.FinderPatternImplementation
+  /// </summary>
+  IFinderPattern = interface(IResultPoint)
+    ['{EF95BB2F-8863-4A83-840E-699779592EC0}']
+    function GetCount:integer;
+    procedure SetCount(value:integer);
+    /// <summary> <p>Determines if this finder pattern "about equals" a finder pattern at the stated
+    /// position and size -- meaning, it is at nearly the same center with nearly the same size.</p>
+    /// </summary>
+    function aboutEquals(const moduleSize, i, j: Single): Boolean;
+
+    /// <summary>
+    /// Combines this object's current estimate of a finder pattern position and module size
+    /// with a new estimate. It returns a new {@code FinderPattern} containing a weighted average
+    /// based on count.
+    /// </summary>
+    /// <param name="i">The i.</param>
+    /// <param name="j">The j.</param>
+    /// <param name="newModuleSize">New size of the module.</param>
+    /// <returns></returns>
+    function combineEstimate(const i, j, newModuleSize: Single): IFinderPattern;
+
+    /// <summary>
+    /// Gets the size of the estimated module.
+    /// </summary>
+    /// <value>
+    /// The size of the estimated module.
+    /// </value>
+    function estimatedModuleSize : Single;
+    property count : Integer read GetCount  write SetCount;
+  end;
+
+
+  /// <summary>
+  ///  contains all static methods for using IFinderPattern instances
+  /// </summary>
+  TFinderPatternHelpers= class(TResultPointHelpers)
+    class function  CreateFinderPattern(const posX, posY, estimatedModuleSize: Single;
+      const count: Integer):IFinderPattern; overload;
+    class function CreateFinderPattern(const posX, posY, estimatedModuleSize: Single):IFinderPattern; overload;
+
+    class procedure orderBestPatterns(const patterns: TArray<IFinderPattern>); static;
+
+  end;
+
+implementation
+uses ZXing.QrCode.Internal.FinderPatternImplementation;
+
+class function  TFinderPatternHelpers.CreateFinderPattern(const posX, posY, estimatedModuleSize: Single; const count: Integer):IFinderPattern;
+begin
+   result :=  ZXing.QrCode.Internal.FinderPatternImplementation.NewFinderPattern(posX, posY, estimatedModuleSize ,count);
+end;
+
+class function TFinderPatternHelpers.CreateFinderPattern(const posX, posY, estimatedModuleSize: Single):IFinderPattern;
+begin
+   result :=  ZXing.QrCode.Internal.FinderPatternImplementation.NewFinderPattern(posX, posY, estimatedModuleSize);
+end;
+
+
+
+class procedure TFinderPatternHelpers.orderBestPatterns( const patterns: TArray<IFinderPattern>);
+var
+  zeroOneDistance,
+  oneTwoDistance,
+  zeroTwoDistance: Single;
+  pointA,
+  pointB,
+  pointC,
+  temp: IFinderPattern;
+begin
+  // Find distances between pattern centers
+  zeroOneDistance := distance(patterns[0], patterns[1]);
+  oneTwoDistance := distance(patterns[1], patterns[2]);
+  zeroTwoDistance := distance(patterns[0], patterns[2]);
+
+  // Assume one closest to other two is B; A and C will just be guesses at first
+  if ((oneTwoDistance >= zeroOneDistance) and
+    (oneTwoDistance >= zeroTwoDistance)) then
+  begin
+    pointB := patterns[0];
+    pointA := patterns[1];
+    pointC := patterns[2];
+  end
+  else if ((zeroTwoDistance >= oneTwoDistance) and
+    (zeroTwoDistance >= zeroOneDistance)) then
+  begin
+    pointB := patterns[1];
+    pointA := patterns[0];
+    pointC := patterns[2];
+  end
+  else
+  begin
+    pointB := patterns[2];
+    pointA := patterns[0];
+    pointC := patterns[1];
+  end;
+
+  // Use cross product to figure out whether A and C are correct or flipped.
+  // This asks whether BC x BA has a positive z component, which is the arrangement
+  // we want for A, B, C. If it's negative, then we've got it flipped around and
+  // should swap A and C.
+  if (TResultPointHelpers.crossProductZ(pointA, pointB, pointC) < 0) then
+  begin
+    temp := pointA;
+    pointA := pointC;
+    pointC := temp;
+  end;
+
+  patterns[0] := pointA;
+  patterns[1] := pointB;
+  patterns[2] := pointC;
+end;
+
+
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.FinderPatternFinder.pas

@@ -0,0 +1,977 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.FinderPatternFinder;
+
+interface
+
+uses 
+  System.SysUtils,
+  System.Math,
+  System.Generics.Defaults,
+  System.Generics.Collections,
+  ZXing.Common.BitMatrix,
+  ZXing.ResultPoint,
+  ZXing.DecodeHinttype,
+  ZXing.QrCode.Internal.FinderPatternInfo,
+  ZXing.QrCode.Internal.FinderPattern;
+
+type
+  /// <summary>
+  /// <p>This class attempts to find finder patterns in a QR Code. Finder patterns are the square
+  /// markers at three corners of a QR Code.</p>
+  ///
+  /// <p>This class is thread-safe but not reentrant. Each thread must allocate its own object.
+  /// </summary>
+  TFinderPatternFinder = class
+  private
+    const
+      CENTER_QUORUM: Integer = 2;
+      INTEGER_MATH_SHIFT: Integer = 8;
+    var
+      FImage: TBitMatrix;
+      FPossibleCenters: TList<IFinderPattern>;
+      FhasSkipped: Boolean;
+      FCrossCheckStateCount: TArray<Integer>;
+      FresultPointCallback: TResultPointCallback;
+
+    class function centerFromEnd(stateCount: TArray<Integer>; pEnd: Integer): Single; static;
+
+    function crossCheckDiagonal(startI: Integer; centerJ: Integer; maxCount: Integer; originalStateCountTotal: Integer): boolean;
+    function crossCheckHorizontal(startJ: Integer; centerI: Integer; maxCount: Integer; originalStateCountTotal: Integer): Single;
+    function crossCheckVertical(startI: Integer; centerJ: Integer; maxCount: Integer; originalStateCountTotal: Integer): Single;
+    function findRowSkip: Integer;
+    function haveMultiplyConfirmedCenters: boolean;
+    function selectBestPatterns: TArray<IFinderPattern>;
+
+    function CrossCheckStateCount: TArray<Integer>;
+  protected
+    const
+      /// <summary>
+      /// 1 pixel/module times 3 modules/center
+      /// </summary>
+      MIN_SKIP: Integer = 3;
+      /// <summary>
+      /// support up to version 10 for mobile clients
+      /// </summary>
+      MAX_MODULES: Integer = 97;
+    class function foundPatternCross(const stateCount: TArray<Integer>): Boolean; static;
+    function handlePossibleCenter(stateCount: TArray<Integer>; i: Integer;
+      j: Integer): boolean;
+    property image: TBitMatrix read FImage;
+  public
+    /// <summary>
+    /// <p>Creates a finder that will search the image for three finder patterns.</p>
+    /// </summary>
+    /// <param name="image">image to search</param>
+    constructor Create(const image: TBitMatrix); overload;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="FinderPatternFinder"/> class.
+    /// </summary>
+    /// <param name="image">The image.</param>
+    /// <param name="resultPointCallback">The result point callback.</param>
+    constructor Create(const image: TBitMatrix;
+      resultPointCallback: TResultPointCallback); overload;
+
+    destructor Destroy; override;
+
+    function find(const hints: TDictionary<TDecodeHintType, TObject>): TFinderPatternInfo; virtual;
+  end;
+
+  TFurthestFromAverageComparator = class sealed(TInterfacedObject,
+    IComparer<IFinderPattern>)
+  private
+    average: Single;
+  public
+    constructor Create(f: Single);
+    function Compare(const Left, Right: IFinderPattern): Integer;
+  end;
+
+  TCenterComparator = class sealed(TInterfacedObject, IComparer<IFinderPattern>)
+  private
+    average: Single;
+  public
+    constructor Create(f: Single);
+    function Compare(const Left, Right: IFinderPattern): Integer;
+  end;
+
+implementation
+
+{ TFinderPatternFinder }
+
+constructor TFinderPatternFinder.Create(const image: TBitMatrix);
+begin
+  Self.Create(image, TResultPointCallback(nil));
+end;
+
+constructor TFinderPatternFinder.Create(const image: TBitMatrix;
+  resultPointCallback: TResultPointCallback);
+begin
+  FImage := image;
+  FPossibleCenters := TList<IFinderPattern>.Create;
+  FCrossCheckStateCount := TArray<Integer>.Create(0, 0, 0, 0, 0);
+  FresultPointCallback := resultPointCallback;
+end;
+
+destructor TFinderPatternFinder.Destroy;
+begin
+  FImage := nil;
+
+  {for i := Pred(PossibleCenters.Count) downto 0 do
+  begin
+    PossibleCenters[i].Free;
+    PossibleCenters.Delete(i);
+  end;}
+
+  FPossibleCenters.Free;
+  FCrossCheckStateCount := nil;
+
+  inherited;
+end;
+
+class function TFinderPatternFinder.centerFromEnd(stateCount: TArray<Integer>;
+  pEnd: Integer): Single;
+var
+  aResult: Single;
+begin
+  aResult := (pEnd - stateCount[4] - stateCount[3]) - (stateCount[2] / 2);
+
+  if (Single.IsNaN(aResult)) then
+  begin
+    result := -1;
+    exit
+  end;
+
+  result := aResult;
+end;
+
+function TFinderPatternFinder.crossCheckDiagonal(startI, centerJ, maxCount,
+  originalStateCountTotal: Integer): boolean;
+var
+  stateCount: TArray<Integer>;
+  i, maxI, maxJ, stateCountTotal: Integer;
+begin
+  stateCount := CrossCheckStateCount;
+  try
+    i := 0;
+    while ((((startI >= i) and (centerJ >= i)) and self.image[(centerJ - i),
+      (startI - i)])) do
+    begin
+      inc(stateCount[2]);
+      inc(i)
+    end;
+    if ((startI < i) or (centerJ < i)) then
+    begin
+      result := false;
+      exit
+    end;
+    while (((((startI >= i) and (centerJ >= i)) and
+      not self.image[(centerJ - i), (startI - i)]) and
+      (stateCount[1] <= maxCount))) do
+    begin
+      inc(stateCount[1]);
+      inc(i)
+    end;
+    if (((startI < i) or (centerJ < i)) or (stateCount[1] > maxCount)) then
+    begin
+      result := false;
+      exit
+    end;
+    while (((((startI >= i) and (centerJ >= i)) and self.image[(centerJ - i),
+      (startI - i)]) and (stateCount[0] <= maxCount))) do
+    begin
+      inc(stateCount[0]);
+      inc(i)
+    end;
+    if (stateCount[0] > maxCount) then
+    begin
+      result := false;
+      exit
+    end;
+    maxI := self.image.Height;
+    maxJ := self.image.Width;
+    i := 1;
+    while (((((startI + i) < maxI) and ((centerJ + i) < maxJ)) and
+      self.image[(centerJ + i), (startI + i)])) do
+    begin
+      inc(stateCount[2]);
+      inc(i)
+    end;
+    if (((startI + i) >= maxI) or ((centerJ + i) >= maxJ)) then
+    begin
+      result := false;
+      exit
+    end;
+    while ((((((startI + i) < maxI) and ((centerJ + i) < maxJ)) and
+      not self.image[(centerJ + i), (startI + i)]) and
+      (stateCount[3] < maxCount))) do
+    begin
+      inc(stateCount[3]);
+      inc(i)
+    end;
+    if ((((startI + i) >= maxI) or ((centerJ + i) >= maxJ)) or
+      (stateCount[3] >= maxCount)) then
+    begin
+      result := false;
+      exit
+    end;
+    while ((((((startI + i) < maxI) and ((centerJ + i) < maxJ)) and
+      self.image[(centerJ + i), (startI + i)]) and
+      (stateCount[4] < maxCount))) do
+    begin
+      inc(stateCount[4]);
+      inc(i)
+    end;
+    if (stateCount[4] >= maxCount) then
+    begin
+      result := false;
+      exit
+    end;
+
+    stateCountTotal :=
+      ((((stateCount[0] + stateCount[1]) + stateCount[2]) + stateCount[3]) +
+      stateCount[4]);
+
+    Result := (Abs(stateCountTotal - originalStateCountTotal) <
+      (2 * originalStateCountTotal)) and TFinderPatternFinder.foundPatternCross
+      (stateCount);
+
+  finally
+    stateCount := nil;
+  end;
+end;
+
+function TFinderPatternFinder.crossCheckHorizontal(startJ: Integer;
+  centerI: Integer; maxCount: Integer;
+  originalStateCountTotal: Integer): Single;
+var
+  stateCount: TArray<Integer>;
+  maxJ, j, stateCountTotal: Integer;
+
+begin
+  maxJ := FImage.Width;
+  stateCount := CrossCheckStateCount;
+
+  try
+
+    j := startJ;
+    while (((j >= 0) and FImage[j, centerI])) do
+    begin
+      inc(stateCount[2]);
+      dec(j)
+    end;
+
+    if (j < 0) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while ((((j >= 0) and not FImage[j, centerI]) and
+      (stateCount[1] <= maxCount))) do
+    begin
+      inc(stateCount[1]);
+      dec(j)
+    end;
+
+    if ((j < 0) or (stateCount[1] > maxCount)) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while ((((j >= 0) and FImage[j, centerI]) and
+      (stateCount[0] <= maxCount))) do
+    begin
+      inc(stateCount[0]);
+      dec(j)
+    end;
+
+    if (stateCount[0] > maxCount) then
+    begin
+      result := -1;
+      exit
+    end;
+    j := (startJ + 1);
+
+    while (((j < maxJ) and FImage[j, centerI])) do
+    begin
+      inc(stateCount[2]);
+      inc(j)
+    end;
+
+    if (j = maxJ) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while ((((j < maxJ) and not FImage[j, centerI]) and
+      (stateCount[3] < maxCount))) do
+    begin
+      inc(stateCount[3]);
+      inc(j)
+    end;
+
+    if ((j = maxJ) or (stateCount[3] >= maxCount)) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while (((j < maxJ) and FImage[j, centerI]) and
+      (stateCount[4] < maxCount)) do
+    begin
+      inc(stateCount[4]);
+      inc(j)
+    end;
+
+    if (stateCount[4] >= maxCount) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    stateCountTotal :=
+      ((((stateCount[0] + stateCount[1]) + stateCount[2]) + stateCount[3]) +
+      stateCount[4]);
+
+    if (5 * Abs(stateCountTotal - originalStateCountTotal) >=
+      originalStateCountTotal) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    if TFinderPatternFinder.foundPatternCross(stateCount) then
+    begin
+      result := TFinderPatternFinder.centerFromEnd(stateCount, j);
+      exit;
+    end;
+
+  finally
+    stateCount := nil;
+  end;
+
+  result := -1;
+
+end;
+
+function TFinderPatternFinder.CrossCheckStateCount: TArray<Integer>;
+begin
+  FCrossCheckStateCount[0] := 0;
+  FCrossCheckStateCount[1] := 0;
+  FCrossCheckStateCount[2] := 0;
+  FCrossCheckStateCount[3] := 0;
+  FCrossCheckStateCount[4] := 0;
+  result := FCrossCheckStateCount;
+end;
+
+function TFinderPatternFinder.crossCheckVertical(startI: Integer;
+  centerJ: Integer; maxCount: Integer;
+  originalStateCountTotal: Integer): Single;
+var
+  stateCount: TArray<Integer>;
+  maxI, i, stateCountTotal: Integer;
+begin
+
+  maxI := FImage.Height;
+  stateCount := CrossCheckStateCount;
+  i := startI;
+  try
+    while (((i >= 0) and FImage[centerJ, i])) do
+    begin
+      inc(stateCount[2]);
+      dec(i)
+    end;
+
+    if (i < 0) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while ((((i >= 0) and not FImage[centerJ, i]) and
+      (stateCount[1] <= maxCount))) do
+    begin
+      inc(stateCount[1]);
+      dec(i)
+    end;
+
+    if ((i < 0) or (stateCount[1] > maxCount)) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while ((((i >= 0) and FImage[centerJ, i]) and
+      (stateCount[0] <= maxCount))) do
+    begin
+      inc(stateCount[0]);
+      dec(i)
+    end;
+
+    if (stateCount[0] > maxCount) then
+    begin
+      result := -1;
+      exit
+    end;
+    i := (startI + 1);
+
+    while (((i < maxI) and FImage[centerJ, i])) do
+    begin
+      inc(stateCount[2]);
+      inc(i)
+    end;
+
+    if (i = maxI) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while ((((i < maxI) and not FImage[centerJ, i]) and
+      (stateCount[3] < maxCount))) do
+    begin
+      inc(stateCount[3]);
+      inc(i)
+    end;
+
+    if ((i = maxI) or (stateCount[3] >= maxCount)) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    while ((((i < maxI) and FImage[centerJ, i]) and
+      (stateCount[4] < maxCount))) do
+    begin
+      inc(stateCount[4]);
+      inc(i)
+    end;
+
+    if (stateCount[4] >= maxCount) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    stateCountTotal :=
+      ((((stateCount[0] + stateCount[1]) + stateCount[2]) + stateCount[3]) +
+      stateCount[4]);
+
+    if ((5 * Abs(stateCountTotal - originalStateCountTotal)) >=
+      (2 * originalStateCountTotal)) then
+    begin
+      result := -1;
+      exit
+    end;
+
+    if TFinderPatternFinder.foundPatternCross(stateCount) then
+    begin
+      result := TFinderPatternFinder.centerFromEnd(stateCount, i);
+      exit;
+    end;
+
+  finally
+    stateCount := nil;
+  end;
+
+  result := -1;
+
+end;
+
+function TFinderPatternFinder.find(
+  const hints: TDictionary<TDecodeHintType, TObject>): TFinderPatternInfo;
+var
+  tryHarder,
+  done, confirmed: Boolean;
+  maxI, maxJ, iSkip,
+  i, currentState, j, rowSkip: Integer;
+  stateCount: TArray<Integer>;
+  patternInfo: TArray<IFinderPattern>;
+  resultInfo: TArray<IResultPoint>;
+begin
+  Result := nil;
+
+  tryHarder := (hints <> nil) and (hints.ContainsKey(ZXing.DecodeHinttype.TRY_HARDER));
+  maxI := Self.image.Height;
+  maxJ := Self.image.Width;
+  // We are looking for black/white/black/white/black modules in
+  // 1:1:3:1:1 ratio; this tracks the number of such modules seen so far
+  // Let's assume that the maximum version QR Code we support takes up 1/4 the height of the
+  // image, and then account for the center being 3 modules in size. This gives the smallest
+  // number of pixels the center could be, so skip this often. When trying harder, look for all
+  // QR versions regardless of how dense they are.
+  iSkip := (3 * maxI) div (4 * MAX_MODULES);
+  if (iSkip < MIN_SKIP) or (tryHarder)
+  then
+     iSkip := MIN_SKIP;
+
+  done := false;
+  stateCount := TArray<Integer>.Create(0, 0, 0, 0, 0);
+  try
+    i := (iSkip - 1);
+    while ((i < maxI) and (not done)) do
+    begin
+      // Get a row of black/white values
+      stateCount[0] := 0;
+      stateCount[1] := 0;
+      stateCount[2] := 0;
+      stateCount[3] := 0;
+      stateCount[4] := 0;
+      currentState := 0;
+
+      j := 0;
+      while (j < maxJ) do
+      begin
+        if (FImage[j, i]) then
+        begin
+          // Black pixel
+          if ((currentState and 1) = 1)
+          then
+             Inc(currentState);
+          Inc(stateCount[currentState]);
+        end else
+        begin
+          // White pixel
+          if ((currentState and 1) = 0) then
+          begin
+            // Counting black pixels
+            if (currentState = 4) then
+            begin
+              // A winner?
+              if TFinderPatternFinder.foundPatternCross(stateCount) then
+              begin
+                // Yes
+                confirmed := handlePossibleCenter(stateCount, i, j);
+                if (confirmed) then
+                begin
+                  // Start examining every other line. Checking each line turned out to be too
+                  // expensive and didn't improve performance.
+                  iSkip := 2;
+                  if (FhasSkipped)
+                  then
+                     done := haveMultiplyConfirmedCenters()
+                  else
+                  begin
+                    rowSkip := findRowSkip();
+                    if (rowSkip > stateCount[2]) then
+                    begin
+                      // Skip rows between row of lower confirmed center
+                      // and top of presumed third confirmed center
+                      // but back up a bit to get a full chance of detecting
+                      // it, entire width of center of finder pattern
+
+                      // Skip by rowSkip, but back off by stateCount[2] (size of last center
+                      // of pattern we saw) to be conservative, and also back off by iSkip which
+                      // is about to be re-added
+                      Inc(i, ((rowSkip - stateCount[2]) - iSkip));
+                      j := (maxJ - 1);
+                    end;
+                  end;
+                end else
+                begin
+                  stateCount[0] := stateCount[2];
+                  stateCount[1] := stateCount[3];
+                  stateCount[2] := stateCount[4];
+                  stateCount[3] := 1;
+                  stateCount[4] := 0;
+                  currentState := 3;
+                  continue;
+                end;
+                // Clear state to start looking again
+                currentState := 0;
+                stateCount[0] := 0;
+                stateCount[1] := 0;
+                stateCount[2] := 0;
+                stateCount[3] := 0;
+                stateCount[4] := 0
+              end else
+              begin
+                // No, shift counts back by two
+                stateCount[0] := stateCount[2];
+                stateCount[1] := stateCount[3];
+                stateCount[2] := stateCount[4];
+                stateCount[3] := 1;
+                stateCount[4] := 0;
+                currentState := 3;
+              end;
+            end else
+            begin
+              Inc(currentState);
+              Inc(stateCount[currentState]);
+            end;
+          end else
+                 // Counting white pixels
+                 Inc(stateCount[currentState]);
+        end;
+        Inc(j);
+      end;
+
+      if foundPatternCross(stateCount) then
+      begin
+        confirmed := Self.handlePossibleCenter(stateCount, i, maxJ);
+        if (confirmed) then
+        begin
+          iSkip := stateCount[0];
+          if (FhasSkipped)
+          then
+             // Found a third one
+             done := self.haveMultiplyConfirmedCenters
+        end;
+      end;
+      Inc(i, iSkip);
+    end;
+
+    patternInfo := selectBestPatterns();
+    if (patternInfo = nil)
+    then
+       exit;
+
+    TFinderPatternHelpers.orderBestPatterns(patternInfo);
+    Result := TFinderPatternInfo.Create(patternInfo);
+  finally
+    resultInfo := nil;
+    stateCount := nil;
+    patternInfo := nil;
+  end;
+end;
+
+function TFinderPatternFinder.findRowSkip: Integer;
+var
+  center: IFinderPattern;
+  firstConfirmedCenter: IResultPoint;
+begin
+  Result := 0;
+
+  if (FPossibleCenters.Count > 1) then
+  begin
+    firstConfirmedCenter := nil;
+
+    for center in FPossibleCenters do
+    begin
+      if (center.Count >= 2) then
+      begin
+        if (firstConfirmedCenter <> nil) then
+        begin
+          FhasSkipped := true;
+          Result := Floor(Abs(firstConfirmedCenter.X - center.X) -
+            Abs(firstConfirmedCenter.Y - center.Y)) div 2;
+          exit;
+        end;
+        firstConfirmedCenter := center;
+      end
+    end
+  end;
+end;
+
+/// <param name="stateCount">count of black/white/black/white/black pixels just read
+/// </param>
+/// <returns> true iff the proportions of the counts is close enough to the 1/1/3/1/1 ratios
+/// used by finder patterns to be considered a match
+/// </returns>
+class function TFinderPatternFinder.foundPatternCross(
+  const stateCount: TArray<Integer>): Boolean;
+var
+  i, totalModuleSize,
+  count, moduleSize,
+  maxVariance: Integer;
+begin
+  Result := false;
+
+  totalModuleSize := 0;
+  for i := 0 to Pred(5) do
+  begin
+    count := stateCount[i];
+    if (count = 0)
+    then
+       exit;
+    Inc(totalModuleSize, count);
+  end;
+
+  if (totalModuleSize < 7)
+  then
+     exit;
+
+  moduleSize := ((totalModuleSize shl 8) div 7);
+  maxVariance := (moduleSize div 2);
+  // Allow less than 50% variance from 1-1-3-1-1 proportions
+  Result := (Abs(moduleSize - (stateCount[0] shl INTEGER_MATH_SHIFT)) < maxVariance) and
+            (Abs(moduleSize - (stateCount[1] shl INTEGER_MATH_SHIFT)) < maxVariance) and
+            (Abs(3 * moduleSize - (stateCount[2] shl INTEGER_MATH_SHIFT)) < (3 * maxVariance)) and
+            (Abs(moduleSize - (stateCount[3] shl INTEGER_MATH_SHIFT)) < maxVariance) and
+            (Abs(moduleSize - (stateCount[4] shl INTEGER_MATH_SHIFT)) < maxVariance);
+end;
+
+function TFinderPatternFinder.handlePossibleCenter(stateCount: TArray<Integer>;
+  i, j: Integer): boolean;
+var
+  stateCountTotal, index: Integer;
+  centerJ, centerI: Single;
+  center, point: IFinderPattern;
+  found: boolean;
+  estimatedModuleSize: Single;
+begin
+  Result := false;
+
+  center := nil;
+  stateCountTotal := ((((stateCount[0] + stateCount[1]) + stateCount[2]) +
+    stateCount[3]) + stateCount[4]);
+
+  centerJ := TFinderPatternFinder.centerFromEnd(stateCount, j);
+
+  if (centerJ = -1)
+  then
+     exit;
+
+  centerI := self.crossCheckVertical(i, Floor(centerJ), stateCount[2],
+    stateCountTotal);
+
+  if (centerI = -1)
+  then
+     exit;
+
+  centerJ := crossCheckHorizontal(Floor(centerJ), Floor(centerI), stateCount[2],
+    stateCountTotal);
+
+  if ((centerJ <> -1) and (self.crossCheckDiagonal(Floor(centerI), Floor(centerJ), stateCount[2],
+    stateCountTotal))) then
+  begin
+    estimatedModuleSize := stateCountTotal / 7;
+    found := false;
+    index := 0;
+    while ((index < FPossibleCenters.Count)) do
+    begin
+      center := FPossibleCenters[index];
+      if (center.aboutEquals(estimatedModuleSize, centerI, centerJ)) then
+      begin
+        FPossibleCenters[index] := nil;
+        FPossibleCenters.Delete(index);
+        FPossibleCenters.Insert(index, center.combineEstimate(centerI, centerJ,
+          estimatedModuleSize));
+        found := true;
+        break;
+      end;
+
+      inc(index)
+    end;
+
+    if (not found) then
+    begin
+      point := TFinderPatternHelpers.CreateFinderPattern(centerJ, centerI, estimatedModuleSize);
+      FPossibleCenters.Add(point);
+
+      if Assigned(FresultPointCallback)
+      then
+         FresultPointCallBack(point);
+    end;
+    Result := true;
+  end;
+end;
+
+function TFinderPatternFinder.haveMultiplyConfirmedCenters: boolean;
+var
+  confirmedCount, max, i: Integer;
+  totalModuleSize, average, totalDeviation: Single;
+  pattern: IFinderPattern;
+begin
+  confirmedCount := 0;
+  totalModuleSize := 0;
+
+  max := FPossibleCenters.Count;
+
+  for pattern in FPossibleCenters do
+  begin
+    if (pattern.Count >= CENTER_QUORUM) then
+    begin
+      inc(confirmedCount);
+      totalModuleSize := totalModuleSize + pattern.estimatedModuleSize;
+    end;
+  end;
+
+  if (confirmedCount < 3) then
+  begin
+    result := false;
+    exit
+  end;
+
+  average := totalModuleSize / max;
+  totalDeviation := 0;
+  i := 0;
+
+  while ((i < max)) do
+  begin
+    pattern := FPossibleCenters[i];
+    totalDeviation := totalDeviation +
+      Abs(pattern.estimatedModuleSize - average);
+    inc(i)
+  end;
+
+  result := (totalDeviation <= (0.05 * totalModuleSize));
+
+end;
+
+function TFinderPatternFinder.selectBestPatterns: TArray<IFinderPattern>;
+var
+	average, square, totalModuleSize: Double;
+  size, stdDev, limit, avrsng: Single;
+  center, possibleCenter, pattern: IFinderPattern;
+  startSize, i: Integer;
+  comparator: IComparer<IFinderPattern>;
+begin
+  startSize := FPossibleCenters.Count;
+  if (startSize < 3) then
+  begin
+    result := nil;
+    exit
+  end;
+  if (startSize > 3) then
+  begin
+    totalModuleSize := 0;
+    square := 0;
+
+    for center in FPossibleCenters do
+    begin
+      size := center.estimatedModuleSize;
+      totalModuleSize := totalModuleSize + size;
+      square := square + (size * size);
+    end;
+
+    average := totalModuleSize / startSize;
+    stdDev := Sqrt((square / startSize) - (average * average));
+    // this intermediate assignment is a workaround for old-gen compilers
+    // that are not deallocating TFurthestFromAverageComparator instance
+    // (bug verified on XE8: just declare a destructor Destroy override
+    // in TFurthestFromAverageComparator put a breakpoint in it and see
+    // that the destructor never gets called if  you don't use this intermediate
+    // assignment)
+    avrsng := average;
+    comparator :=  TFurthestFromAverageComparator.Create(avrsng);
+    FPossibleCenters.Sort(comparator);
+    limit := System.Math.Max((0.2 * avrsng), stdDev);
+    i := 0;
+    while (((i < FPossibleCenters.Count) and
+      (FPossibleCenters.Count > 3))) do
+    begin
+      pattern := FPossibleCenters[i];
+      if (Abs(pattern.estimatedModuleSize - average) > limit) then
+      begin
+        FPossibleCenters.Delete(i);
+        dec(i)
+      end;
+      inc(i)
+    end
+  end;
+
+  if (FPossibleCenters.Count > 3) then
+  begin
+    totalModuleSize := 0;
+
+    for possibleCenter in FPossibleCenters do
+    begin
+      totalModuleSize := totalModuleSize + possibleCenter.estimatedModuleSize;
+    end;
+
+    average := totalModuleSize / FPossibleCenters.Count;
+    // this intermediate assignment is a workaround for old-gen compilers
+    // that are not deallocating TCenterComparator instance
+    // (bug verified on XE8: just declare a destructor Destroy override in
+    // TCenterComparator,put a breakpoint in it and see that the destructor
+    // never gets called if  you don't use this intermediate assignment)
+    comparator :=  TCenterComparator.Create(average);
+
+    FPossibleCenters.Sort( comparator );
+
+    // if (PossibleCenters.Count > 4) then
+    // begin
+    // self.PossibleCenters.DeleteRange(4, self.PossibleCenters.Count - 1);
+    // end;
+
+  end;
+
+  result := TArray<IFinderPattern>.Create(FPossibleCenters[0],
+    FPossibleCenters[1], FPossibleCenters[2]);
+
+end;
+
+{ TFurthestFromAverageComparator }
+
+function TFurthestFromAverageComparator.Compare(const Left,
+  Right: IFinderPattern): Integer;
+var
+  dA, dB: Single;
+begin
+  dA := Abs(Right.estimatedModuleSize - self.average);
+  dB := Abs(Left.estimatedModuleSize - self.average);
+
+  if (dA < dB) then
+  begin
+    result := -1;
+  end
+  else if (dA = dB) then
+  begin
+    result := 0;
+  end
+  else
+    result := 1;
+
+end;
+
+constructor TFurthestFromAverageComparator.Create(f: Single);
+begin
+  average := f;
+end;
+
+{ TCenterComparator }
+
+function TCenterComparator.Compare(const Left, Right: IFinderPattern): Integer;
+var
+  dA, dB: Single;
+begin
+  if (Right.Count = Left.Count) then
+  begin
+    dA := Abs(Right.estimatedModuleSize - self.average);
+    dB := Abs(Left.estimatedModuleSize - self.average);
+
+    if (dA < dB) then
+    begin
+      result := 1;
+    end
+    else if (dA = dB) then
+    begin
+      result := 0;
+    end
+    else
+      result := -1;
+
+    exit;
+  end;
+
+  result := (Right.Count - Left.Count);
+
+end;
+
+constructor TCenterComparator.Create(f: Single);
+begin
+  average := f;
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.FinderPatternImplementation.pas

@@ -0,0 +1,152 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.FinderPatternImplementation;
+
+interface
+uses
+  ZXing.QrCode.Internal.FinderPattern;
+
+
+function NewFinderPattern(const posX, posY, estimatedModuleSize: Single; const count: Integer):IFinderPattern; overload;
+function NewFinderPattern(const posX, posY, estimatedModuleSize: Single):IFinderPattern; overload;
+
+
+implementation
+uses ZXing.ResultPoint,ZXing.ResultPointImplementation;
+
+{ TFinderPattern }
+
+
+type
+  /// <summary>
+  /// <p>Encapsulates a finder pattern, which are the three square patterns found in
+  /// the corners of QR Codes. It also encapsulates a count of similar finder patterns,
+  /// as a convenience to the finder's bookkeeping.</p>
+  /// </summary>
+  TFinderPattern = class(TResultPoint,IResultPoint,IFinderPattern)
+  private
+    Fcount: Integer;
+    FestimatedModuleSize: Single;
+
+    function GetCount:integer;
+    procedure SetCount(value:integer);
+
+    constructor Create(const posX, posY, estimatedModuleSize: Single;
+      const count: Integer); overload;
+    constructor Create(const posX, posY, estimatedModuleSize: Single); overload;
+
+    /// <summary> <p>Determines if this finder pattern "about equals" a finder pattern at the stated
+    /// position and size -- meaning, it is at nearly the same center with nearly the same size.</p>
+    /// </summary>
+    function aboutEquals(const moduleSize, i, j: Single): Boolean;
+
+    /// <summary>
+    /// Combines this object's current estimate of a finder pattern position and module size
+    /// with a new estimate. It returns a new {@code FinderPattern} containing a weighted average
+    /// based on count.
+    /// </summary>
+    /// <param name="i">The i.</param>
+    /// <param name="j">The j.</param>
+    /// <param name="newModuleSize">New size of the module.</param>
+    /// <returns></returns>
+    function combineEstimate(const i, j, newModuleSize: Single): IFinderPattern;
+
+    /// <summary>
+    /// Gets the size of the estimated module.
+    /// </summary>
+    /// <value>
+    /// The size of the estimated module.
+    /// </value>
+    function estimatedModuleSize : Single;
+    property count : Integer read GetCount write SetCount;
+  end;
+
+constructor TFinderPattern.Create(const posX, posY,
+  estimatedModuleSize: Single; const count: Integer);
+begin
+  inherited Create(posX, posY);
+
+  FestimatedModuleSize := estimatedModuleSize;
+  Fcount := count;
+end;
+
+constructor TFinderPattern.Create(const posX, posY,
+  estimatedModuleSize: Single);
+begin
+  Self.Create(posX, posY, estimatedModuleSize, 1);
+end;
+
+function TFinderPattern.estimatedModuleSize: Single;
+begin
+  result := FestimatedModuleSize;
+end;
+
+function TFinderPattern.GetCount: integer;
+begin
+   result := FCount;
+end;
+
+function TFinderPattern.aboutEquals(const moduleSize, i, j: Single): Boolean;
+var
+  moduleSizeDiff : Single;
+begin
+  Result := false;
+
+  if ((Abs(i - y) <= moduleSize) and (Abs(j - x) <= moduleSize)) then
+  begin
+    moduleSizeDiff := Abs(moduleSize - self.estimatedModuleSize);
+
+    Result := ((moduleSizeDiff <= 1) or
+      (moduleSizeDiff <= self.estimatedModuleSize));
+  end;
+end;
+
+procedure TFinderPattern.SetCount(value: integer);
+begin
+   FCount := value;
+end;
+
+function TFinderPattern.combineEstimate(const i, j,
+  newModuleSize: Single): IFinderPattern;
+var
+  combinedCount: Integer;
+  combinedX, combinedY: Single;
+begin
+  combinedCount := (Self.count + 1);
+  combinedX := ((Self.count * x) + j) / combinedCount;
+  combinedY := ((Self.count * y) + i) / combinedCount;
+  Result := TFinderPattern.Create(combinedX, combinedY,
+    (((Self.count * Self.estimatedModuleSize) + newModuleSize) / combinedCount),
+    combinedCount)
+end;
+
+
+function NewFinderPattern(const posX, posY, estimatedModuleSize: Single; const count: Integer):IFinderPattern;
+begin
+   result := TFinderPattern.Create( posX, posY, estimatedModuleSize,count);
+end;
+
+function NewFinderPattern(const posX, posY, estimatedModuleSize: Single):IFinderPattern;
+begin
+   result := TFinderPattern.Create( posX, posY, estimatedModuleSize);
+end;
+
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/Detector/ZXing.QrCode.Internal.FinderPatternInfo.pas

@@ -0,0 +1,69 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.Internal.FinderPatternInfo;
+
+interface
+
+uses 
+  ZXing.QrCode.Internal.FinderPattern;
+
+type
+  /// <summary>
+  /// <p>Encapsulates information about finder patterns in an image, including the location of
+  /// the three finder patterns, and their estimated module size.</p>
+  /// </summary>
+  TFinderPatternInfo = class sealed
+  private
+    FbottomLeft: IFinderPattern;
+    FtopLeft: IFinderPattern;
+    FtopRight: IFinderPattern;
+  public
+    /// <summary>
+    /// Initializes a new instance of the <see cref="FinderPatternInfo"/> class.
+    /// </summary>
+    /// <param name="patternCenters">The pattern centers.</param>
+    constructor Create(const patternCenters: TArray<IFinderPattern>);
+
+    /// <summary>
+    /// Gets the bottom left.
+    /// </summary>
+    property bottomLeft : IFinderPattern read FbottomLeft;
+
+    /// <summary>
+    /// Gets the top left.
+    /// </summary>
+    property topLeft : IFinderPattern read FtopLeft;
+
+    /// <summary>
+    /// Gets the top right.
+    /// </summary>
+    property topRight : IFinderPattern read FtopRight;
+  end;
+
+implementation
+
+constructor TFinderPatternInfo.Create(const patternCenters: TArray<IFinderPattern>);
+begin
+  FbottomLeft := patternCenters[0];
+  FtopLeft := patternCenters[1];
+  FtopRight := patternCenters[2]
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/ZXing.Datamatrix.DataMatrixReader.pas

@@ -0,0 +1,258 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: bbrown@google.com (Brian Brown)
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.Datamatrix.DataMatrixReader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  ZXing.Common.Detector.MathUtils,
+  Math,
+  ZXing.Common.BitArray,
+  ZXing.BarcodeFormat,
+  ZXing.ReadResult,
+  ZXing.Reader,
+  ZXing.DecodeHintType,
+  ZXing.DecoderResult,
+  ZXing.Common.DetectorResult,
+  ZXing.ResultMetadataType,
+  ZXing.ResultPoint,
+  ZXing.Common.BitMatrix,
+  ZXing.BinaryBitmap,
+  ZXing.Datamatrix.Internal.Decoder,
+  ZXing.Datamatrix.Internal.Detector;
+
+type
+  /// <summary>
+  /// This implementation can detect and decode Data Matrix codes in an image.
+  /// </summary>
+  TDataMatrixReader = class(TInterfacedObject, IReader)
+  private
+    FDecoder: TDataMatrixDecoder;
+    NO_POINTS: TArray<IResultPoint>;
+
+    /// <summary>
+    /// This method detects a code in a "pure" image -- that is, pure monochrome image
+    /// which contains only an unrotated, unskewed, image of a code, with some white border
+    /// around it. This is a specialized method that works exceptionally fast in this special
+    /// case.
+    ///
+    /// <seealso cref="ZXing.QrCode.QRCodeReader.extractPureBits(TBitMatrix)" />
+    /// </summary>
+    class function extractPureBits(const image: TBitMatrix): TBitMatrix; static;
+
+    class function moduleSize(const leftTopBlack: TArray<Integer>;
+      const image: TBitMatrix; var moduleSize: Integer): Boolean; static;
+  public
+    constructor Create;
+    destructor Destroy; override;
+
+    /// <summary>
+    /// This implementation can detect and decode Data Matrix codes in an image.
+    /// </summary>
+    function decode(const image: TBinaryBitmap): TReadResult; overload;
+
+    function decode(const image: TBinaryBitmap;
+      hints: TDictionary<TDecodeHintType, TObject>): TReadResult; overload;
+
+    procedure reset;
+  end;
+
+implementation
+uses ZXing.ByteSegments;
+
+{ TDataMatrixReader }
+
+constructor TDataMatrixReader.Create;
+begin
+  inherited;
+  FDecoder := TDataMatrixDecoder.Create;
+  NO_POINTS := TArray<IResultPoint>.Create();
+end;
+
+destructor TDataMatrixReader.Destroy;
+begin
+  NO_POINTS := nil;
+  FDecoder.Free;
+  inherited;
+end;
+
+function TDataMatrixReader.decode(const image: TBinaryBitmap): TReadResult;
+begin
+  Result := decode(image, nil);
+end;
+
+function TDataMatrixReader.decode(const image: TBinaryBitmap;
+  hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  matrixDetector: TDataMatrixDetector;
+  DecoderResult: TDecoderResult;
+  points: TArray<IResultPoint>;
+  bits: TBitMatrix;
+  DetectorResult: TDetectorResult;
+  ByteSegments: IByteSegments;
+begin
+  Result := nil;
+  DetectorResult := nil;
+  DecoderResult := nil;
+  try
+
+    if ((hints <> nil) and hints.ContainsKey(TDecodeHintType.PURE_BARCODE)) then
+    begin
+      bits := TDataMatrixReader.extractPureBits(image.BlackMatrix);
+      if Assigned(bits) then
+      begin
+        DecoderResult := FDecoder.decode(bits);
+        points := NO_POINTS;
+        FreeAndNil(bits);
+      end
+      else
+        exit;
+    end
+    else
+    begin
+      matrixDetector := TDataMatrixDetector.Create(image.BlackMatrix);
+      try
+        DetectorResult := matrixDetector.detect();
+      finally
+        matrixDetector.Free;
+      end;
+
+      if (DetectorResult = nil) then
+        exit;
+
+      DecoderResult := FDecoder.decode(DetectorResult.bits);
+      points := DetectorResult.points;
+    end;
+
+    if (DecoderResult = nil) then
+      exit;
+
+    Result := TReadResult.Create(DecoderResult.Text, DecoderResult.RawBytes,
+      points, TBarcodeFormat.DATA_MATRIX);
+
+    ByteSegments := DecoderResult.ByteSegments;
+
+    if (ByteSegments <> nil) then
+      Result.putMetadata(TResultMetadataType.BYTE_SEGMENTS, TResultMetaData.CreateByteSegmentsMetadata( byteSegments));
+
+    if (Length(DecoderResult.ECLevel) <> 0) then
+      Result.putMetadata(TResultMetadataType.ERROR_CORRECTION_LEVEL, TResultMetaData.CreateStringMetadata(DecoderResult.ECLevel));
+
+  finally
+
+    byteSegments:=nil;
+    if Assigned(DetectorResult) then
+      FreeAndNil(DetectorResult);
+
+    if Assigned(DecoderResult) then
+      FreeAndNil(DecoderResult);
+
+  end;
+
+end;
+
+class function TDataMatrixReader.extractPureBits(const image: TBitMatrix)
+  : TBitMatrix;
+var
+  moduleSize: Integer;
+  leftTopBlack, rightBottomBlack: TArray<Integer>;
+  top, bottom, left, right: Integer;
+  matrixWidth, matrixHeight: Integer;
+  nudge: Integer;
+  bits: TBitMatrix;
+  x, y, iOffset: Integer;
+begin
+  Result := nil;
+
+  leftTopBlack := image.getTopLeftOnBit;
+  rightBottomBlack := image.getBottomRightOnBit;
+  if ((leftTopBlack = nil) or (rightBottomBlack = nil)) then
+    exit;
+
+  if (not TDataMatrixReader.moduleSize(leftTopBlack, image, moduleSize)) then
+    exit;
+
+  top := leftTopBlack[1];
+  bottom := rightBottomBlack[1];
+  left := leftTopBlack[0];
+  right := rightBottomBlack[0];
+
+  matrixWidth := ((right - left + 1) div moduleSize);
+  matrixHeight := ((bottom - top + 1) div moduleSize);
+  if ((matrixWidth <= 0) or (matrixHeight <= 0)) then
+    exit;
+
+  // Push in the "border" by half the module width so that we start
+  // sampling in the middle of the module. Just in case the image is a
+  // little off, this will help recover.
+  nudge :=  TMathUtils.Asr(moduleSize,1);
+  Inc(top, nudge);
+  Inc(left, nudge);
+
+  // Now just read off the bits
+  bits := TBitMatrix.Create(matrixWidth, matrixHeight);
+  for y := 0 to Pred(matrixHeight) do
+  begin
+    iOffset := (top + (y * moduleSize));
+    for x := 0 to Pred(matrixWidth) do
+    begin
+      if (image[(left + (x * moduleSize)), iOffset]) then
+        bits[x, y] := true;
+    end;
+  end;
+
+  Result := bits;
+end;
+
+class function TDataMatrixReader.moduleSize(const leftTopBlack: TArray<Integer>;
+  const image: TBitMatrix; var moduleSize: Integer): Boolean;
+var
+  width, x, y: Integer;
+begin
+  Result := false;
+
+  width := image.width;
+  x := leftTopBlack[0];
+  y := leftTopBlack[1];
+
+  while ((x < width) and image[x, y]) do
+    Inc(x);
+
+  if (x = width) then
+  begin
+    moduleSize := 0;
+    exit;
+  end;
+
+  moduleSize := (x - leftTopBlack[0]);
+  if (moduleSize = 0) then
+    exit;
+
+  Result := true;
+end;
+
+procedure TDataMatrixReader.reset;
+begin
+  // do nothing
+end;
+
+end.

android-client/ThirdParty/ZXing/2D Barcodes/ZXing.QrCode.QRCodeReader.pas

@@ -0,0 +1,340 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.QrCode.QRCodeReader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Math,
+  System.Generics.Collections,
+  ZXing.Common.BitArray,
+  ZXing.ReadResult,
+  ZXing.Reader,
+  ZXing.DecodeHintType,
+  ZXing.BarcodeFormat,
+  ZXing.ResultPoint,
+  ZXing.BinaryBitmap,
+  ZXing.QrCode.Internal.Decoder,
+  ZXing.Common.BitMatrix,
+  ZXing.DecoderResult,
+  ZXing.ResultMetadataType,
+  ZXing.Common.DetectorResult,
+  ZXing.QrCode.Internal.QRCodeDecoderMetaData,
+  ZXing.QrCode.Internal.Detector,
+  ZXing.QrCode.Internal.DecodedBitStreamParser;
+
+type
+  /// <summary>
+  /// This implementation can detect and decode QR Codes in an image.
+  /// </summary>
+  TQRCodeReader = class(TInterfacedObject, IReader)
+  private
+    FDecoder: TQRDecoder;
+    NO_POINTS: TArray<IResultPoint>;
+
+    /// <summary>
+    /// This method detects a code in a "pure" image -- that is, pure monochrome image
+    /// which contains only an unrotated, unskewed, image of a code, with some white border
+    /// around it. This is a specialized method that works exceptionally fast in this special
+    /// case.
+    ///
+    /// <seealso cref="ZXing.Datamatrix.DataMatrixReader.extractPureBits(TBitMatrix)" />
+    /// </summary>
+    class function extractPureBits(const image: TBitMatrix): TBitMatrix; static;
+    class function moduleSize(const leftTopBlack: TArray<Integer>;
+      const image: TBitMatrix; var msize: Single): Boolean; static;
+  protected
+    /// <summary>
+    /// Gets the decoder.
+    /// </summary>
+    /// <returns></returns>
+    property Decoder: TQRDecoder read FDecoder;
+  public
+    constructor Create;
+    destructor Destroy; override;
+
+    /// <summary>
+    /// Locates and decodes a QR code in an image.
+    ///
+    /// <returns>a String representing the content encoded by the QR code</returns>
+    /// </summary>
+    function decode(const image: TBinaryBitmap): TReadResult; overload;
+    /// <summary>
+    /// Locates and decodes a barcode in some format within an image. This method also accepts
+    /// hints, each possibly associated to some data, which may help the implementation decode.
+    /// </summary>
+    /// <param name="image">image of barcode to decode</param>
+    /// <param name="hints">passed as a <see cref="TDictionary{TKey, TValue}"/> from <see cref="TDecodeHintType"/>
+    /// to arbitrary data. The
+    /// meaning of the data depends upon the hint type. The implementation may or may not do
+    /// anything with these hints.</param>
+    /// <returns>
+    /// String which the barcode encodes
+    /// </returns>
+    function decode(const image: TBinaryBitmap;
+      hints: TDictionary<TDecodeHintType, TObject>): TReadResult; overload;
+
+    /// <summary>
+    /// Resets any internal state the implementation has after a decode, to prepare it
+    /// for reuse.
+    /// </summary>
+    procedure reset;
+  end;
+
+implementation
+uses ZXing.ByteSegments;
+
+{ TQRCodeReader }
+
+constructor TQRCodeReader.Create;
+begin
+  inherited;
+  FDecoder := TQRDecoder.Create;
+  NO_POINTS := TArray<IResultPoint>.Create();
+end;
+
+destructor TQRCodeReader.Destroy;
+begin
+  NO_POINTS := nil;
+  FDecoder.Free;
+  inherited;
+end;
+
+function TQRCodeReader.decode(const image: TBinaryBitmap): TReadResult;
+begin
+  Result := Self.decode(image, nil);
+end;
+
+function TQRCodeReader.decode(const image: TBinaryBitmap;
+  hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+var
+  DecoderResult: TDecoderResult;
+  Detector: TDetector;
+  points: TArray<IResultPoint>;
+  bits: TBitMatrix;
+  DetectorResult: TDetectorResult;
+  data: TQRCodeDecoderMetaData;
+  byteSegments: IByteSegments;
+begin
+  Result := nil;
+  DecoderResult := nil;
+
+  if ((image = nil) or (image.BlackMatrix = nil)) then
+    // something is wrong with the image
+    exit;
+  try
+
+    if ((hints <> nil) and hints.ContainsKey(TDecodeHintType.PURE_BARCODE)) then
+    begin
+      bits := TQRCodeReader.extractPureBits(image.BlackMatrix);
+      if Assigned(bits) then
+      begin
+        DecoderResult := Decoder.decode(bits, hints);
+        points := NO_POINTS;
+        bits.Free;
+      end
+      else
+        exit;
+    end
+    else
+    begin
+      Detector := TDetector.Create(image.BlackMatrix);
+      try
+        DetectorResult := Detector.detect(hints);
+        if Assigned(DetectorResult) then
+        begin
+          DecoderResult := Decoder.decode(DetectorResult.bits, hints);
+          points := DetectorResult.points;
+          DetectorResult.Free;
+        end
+        else
+          exit;
+      finally
+        Detector.Free;
+      end;
+    end;
+
+    if (DecoderResult = nil) then
+      exit;
+
+    // If the code was mirrored: swap the bottom-left and the top-right points.
+    data := TQRCodeDecoderMetaData(DecoderResult.Other);
+    if (data <> nil) then
+      data.applyMirroredCorrection(points);
+
+    Result := TReadResult.Create(DecoderResult.Text, DecoderResult.RawBytes,
+      points, TBarcodeFormat.QR_CODE);
+
+    byteSegments := DecoderResult.byteSegments;
+
+    if (byteSegments <> nil) then
+      Result.putMetadata(TResultMetadataType.BYTE_SEGMENTS,  TResultMetaData.CreateByteSegmentsMetadata(byteSegments));
+
+    if (Length(DecoderResult.ecLevel) <> 0) then
+      Result.putMetadata(TResultMetadataType.ERROR_CORRECTION_LEVEL, TResultMetaData.CreateStringMetadata(DecoderResult.ecLevel));
+
+    if (DecoderResult.StructuredAppend) then
+    begin
+      Result.putMetadata(TResultMetadataType.STRUCTURED_APPEND_SEQUENCE,
+          TResultMetaData.CreateIntegerMetadata(DecoderResult.StructuredAppendSequenceNumber));
+      Result.putMetadata(TResultMetadataType.STRUCTURED_APPEND_PARITY,
+        TResultMetaData.CreateIntegerMetadata(DecoderResult.StructuredAppendParity))
+    end;
+
+  finally
+
+    if Assigned(DecoderResult) then
+      FreeAndNil(DecoderResult);
+
+  end;
+
+end;
+
+procedure TQRCodeReader.reset;
+begin
+  // do nothing
+end;
+
+class function TQRCodeReader.extractPureBits(const image: TBitMatrix)
+  : TBitMatrix;
+var
+  moduleSize: Single;
+  leftTopBlack, rightBottomBlack: TArray<Integer>;
+  top, bottom, left, right, matrixWidth, matrixHeight, nudge, x, y, iOffset,
+    nudgedTooFarRight, nudgedTooFarDown: Integer;
+  bits: TBitMatrix;
+begin
+  Result := nil;
+
+  leftTopBlack := image.getTopLeftOnBit;
+  rightBottomBlack := image.getBottomRightOnBit;
+  if ((leftTopBlack = nil) or (rightBottomBlack = nil)) then
+    exit;
+
+  if (not TQRCodeReader.moduleSize(leftTopBlack, image, moduleSize)) then
+    exit;
+
+  top := leftTopBlack[1];
+  bottom := rightBottomBlack[1];
+  left := leftTopBlack[0];
+  right := rightBottomBlack[0];
+
+  // Sanity check!
+  if ((left >= right) or (top >= bottom)) then
+    exit;
+
+  if ((bottom - top) <> (right - left)) then
+    // Special case, where bottom-right module wasn't black so we found something else in the last row
+    // Assume it's a square, so use height as the width
+    right := (left + (bottom - top));
+
+  matrixWidth := Round(((right - left) + 1) / moduleSize);
+  matrixHeight := Round(((bottom - top) + 1) / moduleSize);
+  if ((matrixWidth <= 0) or (matrixHeight <= 0)) then
+    exit;
+
+  if (matrixHeight <> matrixWidth) then
+    // Only possibly decode square regions
+    exit;
+
+  // Push in the "border" by half the module width so that we start
+  // sampling in the middle of the module. Just in case the image is a
+  // little off, this will help recover.
+  nudge := Trunc(moduleSize / 2.0);
+  Inc(top, nudge);
+  Inc(left, nudge);
+
+  // But careful that this does not sample off the edge
+  // "right" is the farthest-right valid pixel location -- right+1 is not necessarily
+  // This is positive by how much the inner x loop below would be too large
+  nudgedTooFarRight := left + Trunc((matrixWidth - 1) * moduleSize) - right;
+  if (nudgedTooFarRight > 0) then
+  begin
+    if (nudgedTooFarRight > nudge) then
+      // Neither way fits; abort
+      exit;
+    Dec(left, nudgedTooFarRight);
+  end;
+  // See logic above
+  nudgedTooFarDown := top + Trunc((matrixHeight - 1) * moduleSize) - bottom;
+  if (nudgedTooFarDown > 0) then
+  begin
+    if (nudgedTooFarDown > nudge) then
+      // Neither way fits; abort
+      exit;
+    Dec(top, nudgedTooFarDown);
+  end;
+
+  // Now just read off the bits
+  bits := TBitMatrix.Create(matrixWidth, matrixHeight);
+  for y := 0 to Pred(matrixHeight) do
+  begin
+    iOffset := top + Trunc(y * moduleSize);
+    for x := 0 to Pred(matrixWidth) do
+    begin
+      if (image[left + Trunc((x * moduleSize)), iOffset]) then
+        bits[x, y] := true;
+    end;
+  end;
+
+  Result := bits;
+end;
+
+class function TQRCodeReader.moduleSize(const leftTopBlack: TArray<Integer>;
+  const image: TBitMatrix; var msize: Single): Boolean;
+var
+  height, width, x, y: Integer;
+  inBlack: Boolean;
+  transitions: Integer;
+begin
+  Result := false;
+
+  height := image.height;
+  width := image.width;
+  x := leftTopBlack[0];
+  y := leftTopBlack[1];
+
+  inBlack := true;
+  transitions := 0;
+  while (((x < width) and (y < height))) do
+  begin
+    if (inBlack <> image[x, y]) then
+    begin
+      Inc(transitions);
+      if (transitions = 5) then
+        break;
+      inBlack := not inBlack;
+    end;
+    Inc(x);
+    Inc(y);
+  end;
+
+  if ((x = width) or (y = height)) then
+  begin
+    msize := 0.0;
+    exit;
+  end;
+
+  msize := ((x - leftTopBlack[0]) / 7.0);
+  Result := true;
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/Detector/ZXing.Common.Detector.MathUtils.pas

@@ -0,0 +1,83 @@
+unit ZXing.Common.Detector.MathUtils;
+
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+  * Restructured by K. Gossens
+}
+interface
+
+uses 
+  System.SysUtils;
+
+type
+  TMathUtils = class sealed
+  public
+    class function distance(const aX, aY, bX, bY: Double): Single; static;
+    class function round(d: Single): Integer; static;
+    // class function Asr(x, y: integer): integer; overload; static;
+    class function Asr(Value: Int64; ShiftBits: integer): Int64; static;
+  end;
+
+implementation
+
+{ TMathUtils }
+
+class function TMathUtils.distance(const aX, aY, bX, bY: Double): Single;
+var
+  xDiff, yDiff: double;
+begin
+  xDiff := aX - bX;
+  yDiff := aY - bY;
+  result := Sqrt(xDiff * xDiff + yDiff * yDiff);
+end;
+
+class function TMathUtils.round(d: Single): Integer;
+begin
+  if (Single.IsNaN(d)) then
+  begin
+    Result := 0;
+    exit
+  end;
+  if (Single.IsPositiveInfinity(d)) then
+  begin
+    Result := $7fffffff;
+    exit;
+  end;
+
+
+
+  if (d < 0)
+  then
+     Result := Trunc(d + (-0.5))
+  else
+     Result := Trunc(d + 0.5);
+end;
+
+{
+  class function TMathUtils.Asr(x, y: integer): integer;
+  begin
+  result := x div (1 shl y);
+  end;
+}
+class function TMathUtils.Asr(Value: Int64; ShiftBits: integer): Int64;
+begin
+  result := Value shr ShiftBits;
+  if (Value and $8000000000000000) > 0 then
+    result := result or ($FFFFFFFFFFFFFFFF shl (64 - ShiftBits));
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/Detector/ZXing.Common.Detector.WhiteRectangleDetector.pas

@@ -0,0 +1,398 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+  * Restructured by K. Gossens
+}
+
+unit ZXing.Common.Detector.WhiteRectangleDetector;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.Common.BitMatrix,
+  ZXing.Common.Detector.MathUtils,
+  ZXing.ResultPoint;
+
+type
+  TWhiteRectangleDetector = class sealed
+  private const
+    CORR: Integer = 1;
+    INIT_SIZE: Integer = 10;
+
+  var
+    downInit: Integer;
+    height: Integer;
+    image: TBitMatrix;
+    leftInit: Integer;
+    rightInit: Integer;
+    upInit: Integer;
+    width: Integer;
+    constructor Create(image: TBitMatrix); overload;
+    constructor Create(image: TBitMatrix; initSize: Integer; x: Integer;
+      y: Integer); overload;
+    function centerEdges(y: IResultPoint; z: IResultPoint; x: IResultPoint;
+      t: IResultPoint): TArray<IResultPoint>;
+    function containsBlackPoint(a: Integer; b: Integer; fixed: Integer;
+      horizontal: boolean): boolean;
+    function getBlackPointOnSegment(aX: Single; aY: Single; bX: Single;
+      bY: Single): IResultPoint;
+  public
+    class function New(image: TBitMatrix): TWhiteRectangleDetector; overload;
+    class function New(image: TBitMatrix; initSize: Integer; x: Integer;
+      y: Integer): TWhiteRectangleDetector; overload; static;
+    function detect(): TArray<IResultPoint>;
+  end;
+
+implementation
+
+{ TWhiteRectangleDetector }
+
+constructor TWhiteRectangleDetector.Create(image: TBitMatrix);
+begin
+  Self.Create(image, 10, image.width div 2, image.height div 2);
+end;
+
+constructor TWhiteRectangleDetector.Create(image: TBitMatrix; initSize: Integer;
+  x: Integer; y: Integer);
+var
+  halfsize: Integer;
+begin
+  Self.image := image;
+  Self.height := image.height;
+  Self.width := image.width;
+  halfsize := (initSize div 2);
+  Self.leftInit := (x - halfsize);
+  Self.rightInit := (x + halfsize);
+  Self.upInit := (y - halfsize);
+  Self.downInit := (y + halfsize);
+end;
+
+function TWhiteRectangleDetector.centerEdges(y: IResultPoint; z: IResultPoint;
+  x: IResultPoint; t: IResultPoint): TArray<IResultPoint>;
+var
+  yi, yj, zi, zj, xi, xj, ti, tj: Single;
+begin
+  yi := y.x;
+  yj := y.y;
+  zi := z.x;
+  zj := z.y;
+  xi := x.x;
+  xj := x.y;
+  ti := t.x;
+  tj := t.y;
+
+  if (yi < (Self.width div 2)) then
+  begin
+    Result := TArray<IResultPoint>.Create(TResultPointHelpers.CreateResultPoint((ti - 1), (tj + 1)
+      ), TResultPointHelpers.CreateResultPoint((zi + 1), (zj + 1)), TResultPointHelpers.CreateResultPoint((xi - 1),
+      (xj - 1)), TResultPointHelpers.CreateResultPoint((yi + 1), (yj - 1)));
+    exit;
+  end;
+
+  Result := TArray<IResultPoint>.Create(TResultPointHelpers.CreateResultPoint((ti + 1), (tj + 1)),
+    TResultPointHelpers.CreateResultPoint((zi + 1), (zj - 1)), TResultPointHelpers.CreateResultPoint((xi - 1),
+    (xj + 1)), TResultPointHelpers.CreateResultPoint((yi - 1), (yj - 1)));
+
+end;
+
+function TWhiteRectangleDetector.containsBlackPoint(a: Integer; b: Integer;
+  fixed: Integer; horizontal: boolean): boolean;
+var
+  x, y: Integer;
+begin
+  if (horizontal) then
+  begin
+    x := a;
+
+    while ((x <= b)) do
+    begin
+      if (Self.image[x, fixed]) then
+      begin
+        Result := true;
+        exit;
+      end;
+      Inc(x)
+    end;
+  end
+  else
+  begin
+    y := a;
+
+    while ((y <= b)) do
+    begin
+      if (Self.image[fixed, y]) then
+      begin
+        Result := true;
+        exit;
+      end;
+      Inc(y);
+    end;
+  end;
+
+  Result := false;
+end;
+
+class function TWhiteRectangleDetector.New(image: TBitMatrix)
+  : TWhiteRectangleDetector;
+var
+  instance: TWhiteRectangleDetector;
+begin
+  Result := nil;
+  if (image <> nil) then
+  begin
+    instance := TWhiteRectangleDetector.Create(image);
+    if (((instance.upInit >= 0) and (instance.leftInit >= 0)) and
+      ((instance.downInit < instance.height) and
+      (instance.rightInit < instance.width))) then
+      Result := instance
+    else
+      instance.Free;
+  end;
+end;
+
+class function TWhiteRectangleDetector.New(image: TBitMatrix; initSize: Integer;
+  x: Integer; y: Integer): TWhiteRectangleDetector;
+var
+  instance: TWhiteRectangleDetector;
+begin
+  instance := TWhiteRectangleDetector.Create(image, initSize, x, y);
+  if (((instance.upInit >= 0) and (instance.leftInit >= 0)) and
+    ((instance.downInit < instance.height) and
+    (instance.rightInit < instance.width))) then
+    Result := instance
+  else
+  begin
+    instance.Free;
+    Result := nil;
+  end;
+end;
+
+function TWhiteRectangleDetector.detect: TArray<IResultPoint>;
+var
+  left, right, up, down: Integer;
+  sizeExceeded, aBlackPointFoundOnBorder, atLeastOneBlackPointFoundOnBorder,
+  atLeastOneBlackPointFoundOnRight, atLeastOneBlackPointFoundOnBottom,
+  atLeastOneBlackPointFoundOnLeft, atLeastOneBlackPointFoundOnTop,
+  rightBorderNotWhite, bottomBorderNotWhite, leftBorderNotWhite,
+  topBorderNotWhite: boolean;
+  i: Integer;
+  z, t, x, y: IResultPoint;
+  maxSize: Integer;
+begin
+  z := nil;
+  t := nil;
+  x := nil;
+  y := nil;
+
+  left := Self.leftInit;
+  right := Self.rightInit;
+  up := Self.upInit;
+  down := Self.downInit;
+  sizeExceeded := false;
+  aBlackPointFoundOnBorder := true;
+  atLeastOneBlackPointFoundOnBorder := false;
+  atLeastOneBlackPointFoundOnRight := false;
+  atLeastOneBlackPointFoundOnBottom := false;
+  atLeastOneBlackPointFoundOnLeft := false;
+  atLeastOneBlackPointFoundOnTop := false;
+  while (aBlackPointFoundOnBorder) do
+  begin
+    aBlackPointFoundOnBorder := false;
+    rightBorderNotWhite := true;
+    while ((rightBorderNotWhite or (not atLeastOneBlackPointFoundOnRight)) and
+      (right < Self.width)) do
+    begin
+      rightBorderNotWhite := Self.containsBlackPoint(up, down, right, false);
+      if (rightBorderNotWhite) then
+      begin
+        Inc(right);
+        aBlackPointFoundOnBorder := true;
+        atLeastOneBlackPointFoundOnRight := true;
+      end
+      else if (not atLeastOneBlackPointFoundOnRight) then
+        Inc(right);
+    end;
+
+    if (right >= Self.width) then
+    begin
+      sizeExceeded := true;
+      break;
+    end;
+
+    bottomBorderNotWhite := true;
+    while ((bottomBorderNotWhite or (not atLeastOneBlackPointFoundOnBottom)) and
+      (down < Self.height)) do
+    begin
+      bottomBorderNotWhite := Self.containsBlackPoint(left, right, down, true);
+      if (bottomBorderNotWhite) then
+      begin
+        Inc(down);
+        aBlackPointFoundOnBorder := true;
+        atLeastOneBlackPointFoundOnBottom := true;
+      end
+      else if (not atLeastOneBlackPointFoundOnBottom) then
+        Inc(down);
+    end;
+
+    if (down >= Self.height) then
+    begin
+      sizeExceeded := true;
+      break;
+    end;
+
+    leftBorderNotWhite := true;
+    while ((leftBorderNotWhite or (not atLeastOneBlackPointFoundOnLeft)) and
+      (left >= 0)) do
+    begin
+      leftBorderNotWhite := Self.containsBlackPoint(up, down, left, false);
+      if (leftBorderNotWhite) then
+      begin
+        Dec(left);
+        aBlackPointFoundOnBorder := true;
+        atLeastOneBlackPointFoundOnLeft := true;
+      end
+      else if (not atLeastOneBlackPointFoundOnLeft) then
+        Dec(left);
+    end;
+
+    if (left < 0) then
+    begin
+      sizeExceeded := true;
+      break;
+    end;
+
+    topBorderNotWhite := true;
+    while ((topBorderNotWhite or (not atLeastOneBlackPointFoundOnTop)) and
+      (up >= 0)) do
+    begin
+      topBorderNotWhite := Self.containsBlackPoint(left, right, up, true);
+      if (topBorderNotWhite) then
+      begin
+        Dec(up);
+        aBlackPointFoundOnBorder := true;
+        atLeastOneBlackPointFoundOnTop := true;
+      end
+      else if (not atLeastOneBlackPointFoundOnTop) then
+        Dec(up);
+    end;
+
+    if (up < 0) then
+    begin
+      sizeExceeded := true;
+      break;
+    end;
+
+    if (aBlackPointFoundOnBorder) then
+      atLeastOneBlackPointFoundOnBorder := true;
+  end;
+
+  if (not(not sizeExceeded and atLeastOneBlackPointFoundOnBorder)) then
+  begin
+    Result := nil;
+    exit;
+  end;
+
+  maxSize := (right - left);
+  i := 1;
+  while ((i < maxSize)) do
+  begin
+    z := Self.getBlackPointOnSegment(left, (down - i), (left + i), down);
+    if (z <> nil) then
+      break;
+    Inc(i);
+  end;
+
+  if (z = nil) then
+  begin
+    Result := nil;
+    exit;
+  end;
+
+  i := 1;
+  while ((i < maxSize)) do
+  begin
+    t := Self.getBlackPointOnSegment(left, (up + i), (left + i), up);
+    if (t <> nil) then
+      break;
+    Inc(i);
+  end;
+
+  if (t = nil) then
+  begin
+    Result := nil;
+    exit;
+  end;
+
+  i := 1;
+  while ((i < maxSize)) do
+  begin
+    x := Self.getBlackPointOnSegment(right, (up + i), (right - i), up);
+    if (x <> nil) then
+      break;
+    Inc(i);
+  end;
+
+  if (x = nil) then
+  begin
+    Result := nil;
+    exit;
+  end;
+
+  y := nil;
+  i := 1;
+  while ((i < maxSize)) do
+  begin
+    y := Self.getBlackPointOnSegment(right, (down - i), (right - i), down);
+    if (y <> nil) then
+      break;
+    Inc(i);
+  end;
+
+  if (y = nil) then
+  begin
+    Result := nil;
+    exit;
+  end;
+
+  Result := Self.centerEdges(y, z, x, t);
+end;
+
+function TWhiteRectangleDetector.getBlackPointOnSegment(aX: Single; aY: Single;
+  bX: Single; bY: Single): IResultPoint;
+var
+  i, x, y, dist: Integer;
+  xStep, yStep: Single;
+begin
+  dist := TMathUtils.round(TMathUtils.distance(aX, aY, bX, bY));
+  xStep := ((bX - aX) / dist);
+  yStep := ((bY - aY) / dist);
+  i := 0;
+  while ((i < dist)) do
+  begin
+    x := TMathUtils.round((aX + (i * xStep)));
+    y := TMathUtils.round((aY + (i * yStep)));
+    if (Self.image[x, y]) then
+    begin
+      Result := TResultPointHelpers.CreateResultPoint(x, y);
+      exit;
+    end;
+    Inc(i);
+  end;
+  Result := nil;
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ReedSolomon/ZXing.Common.ReedSolomon.GenericGF.pas

@@ -0,0 +1,693 @@
+unit ZXing.Common.ReedSolomon.GenericGF;
+
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+// ES: two classes in one unit. This is to avoid circulair reference.
+
+interface
+
+uses SysUtils;
+
+type
+  TGenericGF = class;
+
+  IGenericGFPoly = interface
+    ['{9E56C626-16C5-4A5A-99B5-84559780EB9D}']
+
+    function get_Degree: Integer;
+    function get_isZero: boolean;
+    function get_field: TGenericGF;
+    function get_coefficients: TArray<Integer>;
+
+    property coefficients: TArray<Integer> read get_coefficients;
+    property degree: Integer read get_Degree;
+    property isZero: boolean read get_isZero;
+    property Field: TGenericGF read get_field;
+
+    function addOrSubtract(other: IGenericGFPoly): IGenericGFPoly;
+    function divide(other: IGenericGFPoly): TArray<IGenericGFPoly>;
+    function evaluateAt(a: Integer): Integer;
+    function getCoefficient(degree: Integer): Integer;
+
+    function multiply(scalar: Integer): IGenericGFPoly; overload;
+    function multiply(other: IGenericGFPoly): IGenericGFPoly; overload;
+
+    function multiplyByMonomial(degree: Integer; coefficient: Integer)
+      : IGenericGFPoly;
+
+    function ToString: string;
+  end;
+
+  /// <summary>
+  ///   <p>This class contains utility methods for performing mathematical operations over
+  /// the Galois Fields. Operations use a given primitive polynomial in calculations.</p>
+  ///   <p>Throughout this package, elements of the GF are represented as an {@code int}
+  /// for convenience and speed (but at the cost of memory).
+  ///   </p>
+  /// </summary>
+  TGenericGF = class sealed
+  private
+    FexpTable: TArray<Integer>;
+    FGeneratorBase: Integer;
+    FlogTable: TArray<Integer>;
+    FZero: IGenericGFPoly;
+    FOne: IGenericGFPoly;
+    Fprimitive: Integer;
+    Fsize: Integer;
+
+    function get_GeneratorBase: Integer;
+    function get_One: IGenericGFPoly;
+    function get_Zero: IGenericGFPoly;
+    function get_Size: Integer;
+
+    class function get_AZTEC_DATA_10: TGenericGF; static;
+    class function get_AZTEC_DATA_12: TGenericGF; static;
+    class function get_AZTEC_DATA_6: TGenericGF; static;
+    class function get_AZTEC_PARAM: TGenericGF; static;
+    class function get_QR_CODE_FIELD_256: TGenericGF; static;
+    class function get_DATA_MATRIX_FIELD_256: TGenericGF; static;
+    class procedure InitializeClass(); static;
+    class procedure FinalizeClass(); static;
+  public
+    class var AZTEC_DATA_10: TGenericGF;
+    class var AZTEC_DATA_12: TGenericGF;
+    class var AZTEC_DATA_6: TGenericGF;
+    class var AZTEC_PARAM: TGenericGF;
+    class var DATA_MATRIX_FIELD_256: TGenericGF;
+    class var QR_CODE_FIELD_256: TGenericGF;
+    class var MAXICODE_FIELD_64: TGenericGF;
+    class var AZTEC_DATA_8: TGenericGF;
+
+    constructor Create(primitive, size, genBase: Integer);
+    destructor Destroy(); override;
+
+    function ToString: string; override;
+
+    class function addOrSubtract(a: Integer; b: Integer): Integer; static;
+    function multiply(a: Integer; b: Integer): Integer;
+    function buildMonomial(degree: Integer; coefficient: Integer)
+      : IGenericGFPoly;
+    function log(a: Integer): Integer;
+    function exp(a: Integer): Integer;
+    function inverse(a: Integer): Integer;
+
+    property GeneratorBase: Integer read get_GeneratorBase;
+    property size: Integer read get_Size;
+    property One: IGenericGFPoly read get_One;
+    property Zero: IGenericGFPoly read get_Zero;
+
+  end;
+
+  TGenericGFPoly = class sealed(TInterfacedObject, IGenericGFPoly)
+  private
+    Fcoefficients: TArray<Integer>;
+    Ffield: TGenericGF;
+  public
+    function get_Degree: Integer;
+    function get_isZero: boolean;
+    function get_field: TGenericGF;
+    function get_coefficients: TArray<Integer>;
+
+    property coefficients: TArray<Integer> read get_coefficients;
+    property degree: Integer read get_Degree;
+    property isZero: boolean read get_isZero;
+    property Field: TGenericGF read get_field;
+
+    constructor Create(Field: TGenericGF; coefficients: TArray<Integer>);
+    destructor Destroy(); override;
+    function addOrSubtract(other: IGenericGFPoly): IGenericGFPoly;
+    function divide(other: IGenericGFPoly): TArray<IGenericGFPoly>;
+    function evaluateAt(a: Integer): Integer;
+    function getCoefficient(degree: Integer): Integer;
+
+    function multiply(scalar: Integer): IGenericGFPoly; overload;
+    function multiply(other: IGenericGFPoly): IGenericGFPoly; overload;
+
+    function multiplyByMonomial(degree: Integer; coefficient: Integer)
+      : IGenericGFPoly;
+
+    function ToString: string; override;
+
+  end;
+
+implementation
+
+{ TGenericGF }
+
+class procedure TGenericGF.InitializeClass();
+begin
+  AZTEC_DATA_10 := get_AZTEC_DATA_10();
+  AZTEC_DATA_12 := get_AZTEC_DATA_12;
+  AZTEC_DATA_6 := get_AZTEC_DATA_6;
+  AZTEC_PARAM := get_AZTEC_PARAM;
+  DATA_MATRIX_FIELD_256 := get_DATA_MATRIX_FIELD_256;
+  QR_CODE_FIELD_256 := get_QR_CODE_FIELD_256;
+  MAXICODE_FIELD_64 := get_AZTEC_DATA_6;
+  AZTEC_DATA_8 := get_DATA_MATRIX_FIELD_256;
+end;
+
+class procedure TGenericGF.FinalizeClass;
+begin
+  FreeAndNil(AZTEC_DATA_10);
+  FreeAndNil(AZTEC_DATA_12);
+  FreeAndNil(AZTEC_DATA_6);
+  FreeAndNil(AZTEC_PARAM);
+  FreeAndNil(DATA_MATRIX_FIELD_256);
+  FreeAndNil(QR_CODE_FIELD_256);
+  FreeAndNil(MAXICODE_FIELD_64);
+  FreeAndNil(AZTEC_DATA_8);
+end;
+
+constructor TGenericGF.Create(primitive, size, genBase: Integer);
+var
+  x, i: Integer;
+begin
+  self.Fprimitive := primitive;
+  Fsize := size;
+
+  FGeneratorBase := genBase;
+  self.FexpTable := TArray<Integer>.Create();
+  self.FlogTable := TArray<Integer>.Create();
+
+  SetLength(self.FexpTable, size);
+  SetLength(self.FlogTable, size);
+
+  x := 1;
+  i := 0;
+
+  while ((i < size)) do
+  begin
+    self.FexpTable[i] := x;
+    x := (x shl 1);
+    if (x >= size) then
+    begin
+      x := (x xor primitive);
+      x := (x and (size - 1))
+    end;
+    inc(i)
+  end;
+
+  i := 0;
+  while ((i < (size - 1))) do
+  begin
+    self.FlogTable[self.FexpTable[i]] := i;
+    inc(i)
+  end;
+
+  FZero := TGenericGFPoly.Create(self, TArray<Integer>.Create(0));
+  FOne := TGenericGFPoly.Create(self, TArray<Integer>.Create(1));
+end;
+
+destructor TGenericGF.Destroy;
+begin
+  self.FexpTable := nil;
+  self.FlogTable := nil;
+  inherited;
+end;
+
+class function TGenericGF.addOrSubtract(a, b: Integer): Integer;
+begin
+  Result := (a xor b)
+end;
+
+function TGenericGF.buildMonomial(degree, coefficient: Integer): IGenericGFPoly;
+var
+  coefficients: TArray<Integer>;
+begin
+  if (degree < 0) then
+    raise EArgumentException.Create('Wrong argument');
+
+  if (coefficient = 0) then
+  begin
+    Result := self.Zero;
+    exit
+  end;
+
+  coefficients := TArray<Integer>.Create();
+  SetLength(coefficients, degree + 1);
+  coefficients[0] := coefficient;
+
+  Result := TGenericGFPoly.Create(self, coefficients);
+
+end;
+
+function TGenericGF.exp(a: Integer): Integer;
+begin
+  Result := self.FexpTable[a]
+end;
+
+class function TGenericGF.get_AZTEC_DATA_10: TGenericGF;
+begin
+  Result := TGenericGF.Create($409, $400, 1);
+end;
+
+class function TGenericGF.get_AZTEC_DATA_12: TGenericGF;
+begin
+  Result := TGenericGF.Create($1069, $1000, 1);
+end;
+
+class function TGenericGF.get_AZTEC_DATA_6: TGenericGF;
+begin
+  Result := TGenericGF.Create($43, $40, 1);
+end;
+
+class function TGenericGF.get_AZTEC_PARAM: TGenericGF;
+begin
+  Result := TGenericGF.Create($13, $10, 1);
+end;
+
+class function TGenericGF.get_DATA_MATRIX_FIELD_256: TGenericGF;
+begin
+  Result := TGenericGF.Create($12D, $100, 1);
+end;
+
+function TGenericGF.get_GeneratorBase: Integer;
+begin
+  Result := FGeneratorBase;
+end;
+
+function TGenericGF.get_One: IGenericGFPoly;
+begin
+  Result := FOne;
+end;
+
+class function TGenericGF.get_QR_CODE_FIELD_256: TGenericGF;
+begin
+  Result := TGenericGF.Create($11D, $100, 0);
+end;
+
+function TGenericGF.get_Size: Integer;
+begin
+  Result := Fsize;
+end;
+
+function TGenericGF.get_Zero: IGenericGFPoly;
+begin
+  Result := FZero;
+end;
+
+function TGenericGF.inverse(a: Integer): Integer;
+begin
+  if (a = 0) then
+    raise Exception.Create('Artithmetic Exception');
+
+  Result := self.FexpTable[((self.size - self.FlogTable[a]) - 1)];
+end;
+
+function TGenericGF.log(a: Integer): Integer;
+begin
+  if (a = 0) then
+    raise EArgumentException.Create('wrong argument');
+
+  Result := self.FlogTable[a];
+end;
+
+function TGenericGF.multiply(a, b: Integer): Integer;
+begin
+  if ((a = 0) or (b = 0)) then
+  begin
+    Result := 0;
+    exit
+  end;
+
+  Result := self.FexpTable
+    [((self.FlogTable[a] + self.FlogTable[b]) mod (self.Fsize - 1))];
+
+end;
+
+function TGenericGF.ToString: string;
+begin
+  Result := 'GF(0x' + Fprimitive.ToString() + ',' + size.ToString() + ')';
+end;
+
+/// /////////////////////////////////////////////////////////////////////////////
+
+constructor TGenericGFPoly.Create(Field: TGenericGF;
+  coefficients: TArray<Integer>);
+var
+  coefficientsLength, firstNonZero: Integer;
+
+begin
+
+  coefficientsLength := Length(coefficients);
+  if (coefficientsLength = 0) then
+    raise EArgumentException.Create('Wrong arguments');
+
+  self.Ffield := Field;
+
+  if ((coefficientsLength > 1) and (coefficients[0] = 0)) then
+  begin
+    firstNonZero := 1;
+    while (((firstNonZero < coefficientsLength) and
+      (coefficients[firstNonZero] = 0))) do
+    begin
+      inc(firstNonZero)
+    end;
+
+    Fcoefficients := TArray<Integer>.Create();
+    if (firstNonZero = coefficientsLength) then
+    begin
+      SetLength(Fcoefficients, 1);
+    end
+    else
+    begin
+      SetLength(Fcoefficients, coefficientsLength - firstNonZero);
+      Fcoefficients := Copy(coefficients, firstNonZero, Length(Fcoefficients));
+    end
+  end
+  else
+    Fcoefficients := coefficients
+end;
+
+destructor TGenericGFPoly.Destroy;
+begin
+  SetLength(Fcoefficients, 0);
+  Fcoefficients := nil;
+
+  Ffield := nil;
+
+  inherited;
+end;
+
+function TGenericGFPoly.addOrSubtract(other: IGenericGFPoly): IGenericGFPoly;
+var
+  lengthDiff, i, y: Integer;
+  smallerCoefficients, largerCoefficients, temp, sumDiff: TArray<Integer>;
+begin
+
+  if (not self.Ffield.Equals(other.field)) then
+    raise EArgumentException.Create
+      ('GenericGFPolys do not have same GenericGF field');
+
+  if (self.isZero) then
+  begin
+    Result := other;
+    exit
+  end;
+
+  if (other.isZero) then
+  begin
+    Result := self;
+    exit
+  end;
+
+  smallerCoefficients := self.coefficients;
+  largerCoefficients := other.coefficients;
+  if (Length(smallerCoefficients) > Length(largerCoefficients)) then
+  begin
+    temp := smallerCoefficients;
+    smallerCoefficients := largerCoefficients;
+    largerCoefficients := temp
+  end;
+
+  sumDiff := TArray<Integer>.Create();
+  SetLength(sumDiff, Length(largerCoefficients));
+  lengthDiff := Length(largerCoefficients) - Length(smallerCoefficients);
+
+  for y := 0 to lengthDiff - 1 do
+  begin
+    sumDiff[y] := largerCoefficients[y]
+  end;
+
+  i := lengthDiff;
+  while (i < Length(largerCoefficients)) do
+  begin
+    sumDiff[i] := TGenericGF.addOrSubtract(smallerCoefficients[(i - lengthDiff)
+      ], largerCoefficients[i]);
+    inc(i)
+  end;
+
+  Result := TGenericGFPoly.Create(self.Ffield, sumDiff);
+end;
+
+function TGenericGFPoly.divide(other: IGenericGFPoly): TArray<IGenericGFPoly>;
+var
+  term, quotient, remainder, iterationQuotient: IGenericGFPoly;
+  degreeDifference, denominatorLeadingTerm, scale,
+    inverseDenominatorLeadingTerm: Integer;
+begin
+  if (not self.Ffield.Equals(other.field)) then
+    raise EArgumentException.Create
+      ('GenericGFPolys do not have same GenericGF field');
+
+  if (other.isZero) then
+    raise EArgumentException.Create('Divide by 0');
+
+  quotient := self.Ffield.Zero;
+  remainder := self;
+  denominatorLeadingTerm := other.getCoefficient(other.degree);
+  inverseDenominatorLeadingTerm := self.Ffield.inverse(denominatorLeadingTerm);
+
+  while (((remainder.degree >= other.degree) and not remainder.isZero)) do
+  begin
+    degreeDifference := (remainder.degree - other.degree);
+    scale := self.Ffield.multiply(remainder.getCoefficient(remainder.degree),
+      inverseDenominatorLeadingTerm);
+    term := other.multiplyByMonomial(degreeDifference, scale);
+    iterationQuotient := self.Ffield.buildMonomial(degreeDifference, scale);
+    quotient := quotient.addOrSubtract(iterationQuotient);
+    remainder := remainder.addOrSubtract(term)
+  end;
+
+  Result := TArray<IGenericGFPoly>.Create(quotient, remainder);
+end;
+
+function TGenericGFPoly.evaluateAt(a: Integer): Integer;
+var
+  size, coefficient, i, y, l: Integer;
+
+begin
+  Result := 0;
+  if (a = 0) then
+  begin
+    Result := self.getCoefficient(0);
+    exit
+  end;
+
+  size := Length(self.coefficients);
+  if (a = 1) then
+  begin
+
+    l := Length(self.coefficients) - 1;
+    for y := 0 to l do
+    begin
+      coefficient := coefficients[y];
+      Result := TGenericGF.addOrSubtract(Result, coefficient)
+    end;
+
+    exit
+  end;
+
+  Result := self.coefficients[0];
+  i := 1;
+  while ((i < size)) do
+  begin
+    Result := TGenericGF.addOrSubtract(self.Ffield.multiply(a, Result),
+      self.coefficients[i]);
+    inc(i)
+  end;
+
+end;
+
+function TGenericGFPoly.getCoefficient(degree: Integer): Integer;
+begin
+  Result := Fcoefficients[Length(Fcoefficients) - 1 - degree]
+end;
+
+function TGenericGFPoly.get_coefficients: TArray<Integer>;
+begin
+  Result := fcoefficients;
+end;
+
+function TGenericGFPoly.get_Degree: Integer;
+begin
+  Result := Length(Fcoefficients) - 1;
+end;
+
+function TGenericGFPoly.get_field: TGenericGF;
+begin
+  Result := FField;
+end;
+
+function TGenericGFPoly.get_isZero: boolean;
+begin
+  Result := Fcoefficients[0] = 0;
+end;
+
+function TGenericGFPoly.multiply(other: IGenericGFPoly): IGenericGFPoly;
+var
+  product, aCoefficients, bCoefficients: TArray<Integer>;
+  aLength, bLength, i, aCoeff, j: Integer;
+begin
+
+  if (not self.Ffield.Equals(other.field)) then
+    raise EArgumentException.Create
+      ('GenericGFPolys do not have same GenericGF field');
+
+  if (self.isZero or other.isZero) then
+  begin
+    Result := self.Ffield.Zero;
+    exit
+  end;
+
+  aCoefficients := self.coefficients;
+  aLength := Length(aCoefficients);
+  bCoefficients := other.coefficients;
+  bLength := Length(bCoefficients);
+  product := TArray<Integer>.Create();
+  SetLength(product, (aLength + bLength) - 1);
+  i := 0;
+
+  while ((i < aLength)) do
+  begin
+    aCoeff := aCoefficients[i];
+    j := 0;
+    while ((j < bLength)) do
+    begin
+      product[(i + j)] := TGenericGF.addOrSubtract(product[(i + j)],
+        self.Ffield.multiply(aCoeff, bCoefficients[j]));
+      inc(j)
+    end;
+    inc(i)
+  end;
+
+  Result := TGenericGFPoly.Create(self.Ffield, product);
+
+end;
+
+function TGenericGFPoly.multiply(scalar: Integer): IGenericGFPoly;
+var
+  product: TArray<Integer>;
+  size, i: Integer;
+begin
+
+  if (scalar = 0) then
+  begin
+    Result := self.Ffield.Zero;
+    exit
+  end;
+
+  if (scalar = 1) then
+  begin
+    Result := self;
+    exit
+  end;
+
+  size := Length(self.coefficients);
+  product := TArray<Integer>.Create();
+  SetLength(product, size);
+  i := 0;
+  while ((i < size)) do
+  begin
+    product[i] := self.Ffield.multiply(self.coefficients[i], scalar);
+    inc(i)
+  end;
+
+  Result := TGenericGFPoly.Create(self.Ffield, product);
+
+end;
+
+function TGenericGFPoly.multiplyByMonomial(degree, coefficient: Integer)
+  : IGenericGFPoly;
+var
+  product: TArray<Integer>;
+  size, i: Integer;
+begin
+  if (degree < 0) then
+    raise EArgumentException.Create('Wrong arguments');
+
+  if (coefficient = 0) then
+  begin
+    Result := self.Ffield.Zero;
+    exit
+  end;
+
+  size := Length(self.coefficients);
+  product := TArray<Integer>.Create();
+  SetLength(product, size + degree);
+  i := 0;
+
+  while ((i < size)) do
+  begin
+    product[i] := self.Ffield.multiply(self.coefficients[i], coefficient);
+    inc(i)
+  end;
+
+  Result := TGenericGFPoly.Create(self.Ffield, product);
+end;
+
+function TGenericGFPoly.ToString: string;
+var
+  lResult: TStringBuilder;
+  degree, coefficient, alphaPower: Integer;
+
+begin
+  lResult := TStringBuilder.Create((8 * self.degree));
+  degree := self.degree;
+
+  while ((degree >= 0)) do
+  begin
+
+    coefficient := self.getCoefficient(degree);
+    if (coefficient <> 0) then
+    begin
+
+      if (coefficient < 0) then
+      begin
+        lResult.Append(' - ');
+        coefficient := -1 * coefficient
+      end
+      else if (Result.Length > 0) then
+        lResult.Append(' + ');
+
+      if ((degree = 0) or (coefficient <> 1)) then
+      begin
+        alphaPower := self.Ffield.log(coefficient);
+        if (alphaPower = 0) then
+          lResult.Append('1')
+        else if (alphaPower = 1) then
+          lResult.Append('a')
+        else
+        begin
+          lResult.Append('a^');
+          lResult.Append(alphaPower)
+        end
+      end;
+
+      if (degree <> 0) then
+        if (degree = 1) then
+          lResult.Append('x')
+        else
+        begin
+          lResult.Append('x^');
+          lResult.Append(degree)
+        end
+    end;
+    dec(degree)
+  end;
+
+  Result := lResult.ToString();
+end;
+
+initialization
+  TGenericGF.InitializeClass();
+finalization
+  TGenericGF.FinalizeClass();
+end.

android-client/ThirdParty/ZXing/Common/ReedSolomon/ZXing.Common.ReedSolomon.ReedSolomonDecoder.pas

@@ -0,0 +1,297 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen and William Rucklidge  
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.Common.ReedSolomon.ReedSolomonDecoder;
+
+interface
+
+uses 
+  System.SysUtils, 
+  // Hint: ZXing.Common.ReedSolomon.GenericGFPoly is implemented in GenericGF as second class
+  ZXing.Common.ReedSolomon.GenericGF;
+
+type
+  /// <summary>
+  /// Implements Reed-Solomon encoding, as the name implies.
+  /// </summary>
+  TReedSolomonDecoder = class sealed
+  public
+    constructor Create(field: TGenericGF);
+  public
+    function decode(received: TArray<Integer>; twoS: Integer): boolean;
+  strict private
+    function findErrorLocations(errorLocator: IGenericGFPoly): TArray<Integer>;
+  strict private
+    function findErrorMagnitudes(errorEvaluator: IGenericGFPoly;
+      errorLocations: TArray<Integer>): TArray<Integer>;
+  private
+    function runEuclideanAlgorithm(a: IGenericGFPoly; b: IGenericGFPoly;
+      pR: Integer): TArray<IGenericGFPoly>;
+
+  strict private
+    field: TGenericGF;
+  end;
+
+implementation
+
+{ TReedSolomonDecoder }
+
+constructor TReedSolomonDecoder.Create(field: TGenericGF);
+begin
+  self.field := field
+end;
+	  
+function TReedSolomonDecoder.decode(received: TArray<Integer>;
+  twoS: Integer): boolean;
+var
+  i, eval, position: Integer;
+  poly, syndrome, sigma, omega: IGenericGFPoly;
+  sigmaOmega: TArray<IGenericGFPoly>;
+  errorLocations: TArray<Integer>;
+
+  syndromeCoefficients, errorMagnitudes: TArray<Integer>;
+  noError: boolean;
+begin
+  poly := TGenericGFPoly.Create(self.field, received);
+
+  syndromeCoefficients := TArray<Integer>.Create();
+  SetLength(syndromeCoefficients, twoS);
+
+  try
+
+    noError := true;
+    i := 0;
+    while ((i < twoS)) do
+    begin
+      eval := poly.evaluateAt(self.field.exp((i + self.field.GeneratorBase)));
+      syndromeCoefficients[((Length(syndromeCoefficients) - 1) - i)] := eval;
+      if (eval <> 0) then
+        noError := false;
+      inc(i)
+    end;
+
+    if (noError) then
+    begin
+      Result := true;
+      Exit;
+    end;
+
+    syndrome := TGenericGFPoly.Create(self.field, syndromeCoefficients);
+    sigmaOmega := self.runEuclideanAlgorithm(self.field.buildMonomial(twoS, 1),
+      syndrome, twoS);
+
+    if (sigmaOmega = nil) then
+    begin
+      Result := false;
+      Exit
+    end;
+
+    sigma := sigmaOmega[0];
+    errorLocations := self.findErrorLocations(sigma);
+    if (errorLocations = nil) then
+    begin
+      Result := false;
+      Exit
+    end;
+
+    omega := sigmaOmega[1];
+    errorMagnitudes := self.findErrorMagnitudes(omega, errorLocations);
+    i := 0;
+    while (i < Length(errorLocations)) do
+    begin
+      position := ((Length(received) - 1) - self.field.log(errorLocations[i]));
+      if (position < 0) then
+      begin
+        Result := false;
+        Exit
+      end;
+      received[position] := TGenericGF.addOrSubtract(received[position],
+        errorMagnitudes[i]);
+      inc(i)
+    end;
+
+  finally
+    SetLength(sigmaOmega, 0);
+    SetLength(syndromeCoefficients, 0);
+  end;
+
+  Result := true;
+
+end;
+
+function TReedSolomonDecoder.findErrorLocations(errorLocator: IGenericGFPoly)
+  : TArray<Integer>;
+var
+  numErrors, e, i: Integer;
+
+begin
+  numErrors := errorLocator.Degree;
+
+  if (numErrors = 1) then
+  begin
+    Result := TArray<Integer>.Create(errorLocator.getCoefficient(1));
+    Exit
+  end;
+
+  Result := TArray<Integer>.Create();
+  SetLength(Result, numErrors);
+
+  e := 0;
+  i := 1;
+
+  while (((i < self.field.Size) and (e < numErrors))) do
+  begin
+
+    if (errorLocator.evaluateAt(i) = 0) then
+    begin
+      Result[e] := self.field.inverse(i);
+      inc(e)
+    end;
+
+    inc(i);
+
+  end;
+
+  if (e <> numErrors) then
+  begin
+    Result := nil;
+  end;
+
+end;
+
+function TReedSolomonDecoder.findErrorMagnitudes(errorEvaluator: IGenericGFPoly;
+  errorLocations: TArray<Integer>): TArray<Integer>;
+var
+  s, i, xiInverse, denominator, j, term, termPlus1: Integer;
+
+begin
+  s := Length(errorLocations);
+  Result := TArray<Integer>.Create();
+  SetLength(Result, s);
+
+  i := 0;
+  while ((i < s)) do
+  begin
+    xiInverse := self.field.inverse(errorLocations[i]);
+    denominator := 1;
+    j := 0;
+    while ((j < s)) do
+    begin
+      if (i <> j) then
+      begin
+        term := self.field.multiply(errorLocations[j], xiInverse);
+
+        if ((term and 1) = 0) then
+        begin
+          termPlus1 := (term or 1)
+        end
+        else
+        begin
+          termPlus1 := (term and (not 1));
+        end;
+
+        denominator := self.field.multiply(denominator, termPlus1)
+
+      end;
+      inc(j)
+    end;
+
+    Result[i] := self.field.multiply(errorEvaluator.evaluateAt(xiInverse),
+      self.field.inverse(denominator));
+
+    if (self.field.GeneratorBase <> 0) then
+      Result[i] := self.field.multiply(Result[i], xiInverse);
+
+    inc(i)
+  end;
+
+end;
+
+function TReedSolomonDecoder.runEuclideanAlgorithm(a, b: IGenericGFPoly;
+  pR: Integer): TArray<IGenericGFPoly>;
+var
+  temp, rLastLast, tLastLast, rLast, tLast, t, q, sigma, omega,
+    R: IGenericGFPoly;
+  denominatorLeadingTerm, dltInverse, degreeDiff, scale, inverse,
+    sigmaTildeAtZero: Integer;
+begin
+
+  if (a.Degree < b.Degree) then
+  begin
+    temp := a;
+    a := b;
+    b := temp
+  end;
+
+  rLast := a;
+  R := b;
+  tLast := self.field.Zero;
+  t := self.field.One;
+
+  while ((R.Degree >= (pR div 2))) do
+  begin
+    rLastLast := rLast;
+    tLastLast := tLast;
+    rLast := R;
+    tLast := t;
+
+    if (rLast.isZero) then
+    begin
+      Result := nil;
+      Exit
+    end;
+
+    R := rLastLast;
+    q := self.field.Zero;
+    denominatorLeadingTerm := rLast.getCoefficient(rLast.Degree);
+    dltInverse := self.field.inverse(denominatorLeadingTerm);
+
+    while (((R.Degree >= rLast.Degree) and not R.isZero)) do
+    begin
+      degreeDiff := (R.Degree - rLast.Degree);
+      scale := self.field.multiply(R.getCoefficient(R.Degree), dltInverse);
+      q := q.addOrSubtract(self.field.buildMonomial(degreeDiff, scale));
+      R := R.addOrSubtract(rLast.multiplyByMonomial(degreeDiff, scale))
+    end;
+
+    t := q.multiply(tLast).addOrSubtract(tLastLast);
+
+    if (R.Degree >= rLast.Degree) then
+    begin
+      Result := nil;
+      Exit
+    end
+  end;
+
+  sigmaTildeAtZero := t.getCoefficient(0);
+  if (sigmaTildeAtZero = 0) then
+  begin
+    Result := nil;
+    Exit
+  end;
+
+  inverse := self.field.inverse(sigmaTildeAtZero);
+  sigma := t.multiply(inverse);
+  omega := R.multiply(inverse);
+
+  Result := TArray<IGenericGFPoly>.Create(sigma, omega);
+
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXIng.ByteSegments.pas

@@ -0,0 +1,96 @@
+unit ZXIng.ByteSegments;
+interface
+
+type
+    /// <summary>
+    ///  implements the ByteSegments (which was declared as a TList<TArray<Byte>>
+    ///  throughout the code as reference-counted interface object)
+    /// </summary>
+    IByteSegments = Interface
+        ['{0994FC90-E8F5-40D8-8A48-9B05DFFF2635}']
+        function Count:integer;
+        procedure Clear;
+        function GetCapacity: integer;
+        procedure SetCapacity(const Value: integer);
+        property Capacity:integer read GetCapacity write SetCapacity;
+        function Add(const item:TArray<byte>):integer;
+        function Get(index: integer):TArray<byte>;
+     end;
+
+
+function ByteSegmentsCreate:IByteSegments;
+
+implementation
+uses system.SysUtils,
+     Generics.Collections;
+
+type
+  TByteSegments = class(TInterfacedObject,IByteSegments)
+  private
+     FList: TList<TArray<Byte>>;
+     function Count:integer;
+     procedure Clear;
+     constructor Create;
+     function GetCapacity: integer;
+     procedure SetCapacity(const Value: integer);
+     function Add(const item:TArray<byte>):integer;
+     function Get(index: integer):TArray<byte>;
+  public
+     destructor Destroy; override;
+  end;
+
+
+
+
+function ByteSegmentsCreate:IByteSegments;
+begin
+   result := TByteSegments.Create;
+
+end;
+
+
+{ TByteSegments }
+
+function TByteSegments.Add(const item: TArray<byte>): integer;
+begin
+   result := FList.Add(item);
+end;
+
+procedure TByteSegments.Clear;
+begin
+   FList.Clear;
+end;
+
+function TByteSegments.Count: integer;
+begin
+   result := FList.Count;
+end;
+
+constructor TByteSegments.Create;
+begin
+   FList := TList<TArray<Byte>>.Create;
+   inherited Create;
+end;
+
+destructor TByteSegments.Destroy;
+begin
+  FList.Free;
+  inherited;
+end;
+
+function TByteSegments.GetCapacity: integer;
+begin
+   result := FList.Capacity;
+end;
+
+procedure TByteSegments.SetCapacity(const Value: integer);
+begin
+  FList.Capacity := value;
+end;
+
+function TByteSegments.Get(index: Integer) : TArray<byte>;
+begin
+  Result := FList[index];
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.BarcodeFormat.pas

@@ -0,0 +1,89 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+
+unit ZXing.BarcodeFormat;
+
+interface
+
+type
+  TBarcodeFormat = (
+    /// <summary>No format set. All formats will be used</summary>
+    Auto = 0,
+
+    /// <summary>Aztec 2D barcode format.</summary>
+    AZTEC = 1,
+
+    /// <summary>CODABAR 1D format.</summary>
+    CODABAR = 2,
+
+    /// <summary>Code 39 1D format.</summary>
+    CODE_39 = 4,
+
+    /// <summary>Code 93 1D format.</summary>
+    CODE_93 = 8,
+
+    /// <summary>Code 128 1D format.</summary>
+    CODE_128 = 16,
+
+    /// <summary>Data Matrix 2D barcode format.</summary>
+    DATA_MATRIX = 32,
+
+    /// <summary>EAN-8 1D format.</summary>
+    EAN_8 = 64,
+
+    /// <summary>EAN-13 1D format.</summary>
+    EAN_13 = 128,
+
+    /// <summary>ITF (Interleaved Two of Five) 1D format.</summary>
+    ITF = 256,
+
+    /// <summary>MaxiCode 2D barcode format.</summary>
+    MAXICODE = 512,
+
+    /// <summary>PDF417 format.</summary>
+    PDF_417 = 1024,
+
+    /// <summary>QR Code 2D barcode format.</summary>
+    QR_CODE = 2048,
+
+    /// <summary>RSS 14</summary>
+    RSS_14 = 4096,
+
+    /// <summary>RSS EXPANDED</summary>
+    RSS_EXPANDED = 8192,
+
+    /// <summary>UPC-A 1D format.</summary>
+    UPC_A = 16384,
+
+    /// <summary>UPC-E 1D format.</summary>
+    UPC_E = 32768,
+
+    /// <summary>UPC/EAN extension format. Not a stand-alone format.</summary>
+    UPC_EAN_EXTENSION = 65536,
+
+    /// <summary>MSI</summary>
+    MSI = 131072,
+
+    /// <summary>Plessey</summary>
+    PLESSEY = 262144
+
+    );
+
+implementation
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.BitSource.pas

@@ -0,0 +1,110 @@
+unit ZXing.BitSource;
+
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+interface
+
+uses 
+  SysUtils, 
+  ZXing.Common.Detector.MathUtils;
+
+type
+
+  TBitSource = class sealed
+  private
+    bytes: TArray<Byte>;
+  public
+    BitOffset: Integer;
+    ByteOffset: Integer;
+    constructor Create(bytes: TArray<Byte>);
+    function available: Integer;
+    function readBits(numBits: Integer): Integer;
+  end;
+
+implementation
+
+{ TBitSource }
+
+function TBitSource.available: Integer;
+begin
+  Result := 8 * (Length(self.bytes) - self.ByteOffset) - self.BitOffset;
+end;
+
+constructor TBitSource.Create(bytes: TArray<Byte>);
+begin
+  self.bytes := bytes;
+end;
+
+function TBitSource.readBits(numBits: Integer): Integer;
+var
+  bitsToNotRead, bitsLeft, toRead, mask: Integer;
+begin
+  if (((numBits < 1) or (numBits > $20)) or (numBits > available())) then
+    raise EArgumentException.Create(numBits.ToString + 'numBits');
+
+  Result := 0;
+  if (BitOffset > 0) then
+  begin
+
+    bitsLeft := 8 - BitOffset;
+    if (numBits < bitsLeft) then
+      toRead := numBits
+    else
+      toRead := bitsLeft;
+
+    bitsToNotRead := (bitsLeft - toRead);
+    mask := TMathUtils.Asr($FF, ((8 - toRead) and $1F)) shl bitsToNotRead;
+    Result := TMathUtils.Asr((self.bytes[self.ByteOffset] and mask),
+      bitsToNotRead);
+
+    dec(numBits, toRead);
+    inc(BitOffset, toRead);
+
+    if (BitOffset = 8) then
+    begin
+      BitOffset := 0;
+      inc(ByteOffset)
+    end
+  end;
+
+  if (numBits > 0) then
+  begin
+
+    while ((numBits >= 8)) do
+    begin
+      Result := ((Result shl 8) or (self.bytes[self.ByteOffset] and $FF));
+      inc(self.ByteOffset);
+      dec(numBits, 8)
+    end;
+
+    if (numBits > 0) then
+    begin
+      bitsToNotRead := 8 - numBits;
+      mask := TMathUtils.Asr($FF, bitsToNotRead) shl bitsToNotRead;
+
+      Result := (Result shl numBits) or
+        TMathUtils.Asr((bytes[ByteOffset] and mask), bitsToNotRead);
+
+      inc(BitOffset, numBits)
+    end
+
+  end;
+
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.CharacterSetECI.pas

@@ -0,0 +1,180 @@
+unit ZXing.CharacterSetECI;
+
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+interface
+
+uses SysUtils, Generics.Collections;
+
+type
+
+  TECI = class abstract
+  private
+    value_Renamed: Integer;
+    constructor Create(value_Renamed: Integer);
+  public
+    class function getECIByValue(value_Renamed: Integer): TECI; static;
+    property value: Integer read value_Renamed;
+  end;
+
+  TCharacterSetECI = class sealed(TECI)
+  strict private
+    FEncodingName: string;
+    class var NAME_TO_ECI: TDictionary<string, TCharacterSetECI>;
+    class var VALUE_TO_ECI: TDictionary<Integer, TCharacterSetECI>;
+    ///<summary>
+    /// this objectlist is just for doing proper deallocation of TCharacterSetECI instances under Win32/Win64,
+    /// without having to mess with TInterfacedObject. Since instances are meant to exist for the whole program life, there's no need of doing
+    /// anything much more complicated than this.
+    /// </summary>
+    class var AllocatedInstances:TObjectList<TCharacterSetECI>;
+
+    class constructor Create;
+    constructor Create(value: Integer; encodingName: string); overload;
+    class destructor Destroy;
+
+    class procedure addCharacterSet(value: Integer;  encodingNames: TArray<string>); static;
+
+  public
+
+    property encodingName: string read FEncodingName;
+
+    class function getCharacterSetECIByName(name: string)
+      : TCharacterSetECI; static;
+    class function getCharacterSetECIByValue(value: Integer)
+      : TCharacterSetECI; static;
+
+  end;
+
+implementation
+
+{ TECI }
+
+constructor TECI.Create(value_Renamed: Integer);
+begin
+  self.value_Renamed := value_Renamed
+end;
+
+class function TECI.getECIByValue(value_Renamed: Integer): TECI;
+begin
+  if ((value_Renamed < 0) or (value_Renamed > $F423F)) then
+    raise EArgumentException.Create('Bad ECI value: ' +
+      value_Renamed.ToString());
+
+  if (value_Renamed < 900) then
+  begin
+    Result := TCharacterSetECI.getCharacterSetECIByValue(value_Renamed);
+    exit
+  end;
+
+  Result := nil;
+end;
+
+{ TCharacterSetECI }
+
+constructor TCharacterSetECI.Create(value: Integer; encodingName: string);
+begin
+  inherited Create(value);
+  FEncodingName := encodingName;
+  AllocatedInstances.Add(self); // add the instance to the global list of all created instances
+end;
+
+class destructor TCharacterSetECI.Destroy;
+begin
+   NAME_TO_ECI.Free;
+   VALUE_TO_ECI.Free;
+
+   if  AllocatedInstances<>nil then begin
+      AllocatedInstances.Clear;
+      AllocatedInstances.Free;
+end;
+
+end;
+
+class constructor TCharacterSetECI.Create;
+begin
+  NAME_TO_ECI:=TDictionary<string, TCharacterSetECI>.Create;
+  VALUE_TO_ECI:=TDictionary<Integer, TCharacterSetECI>.Create;
+  // under Win32/64 TObjectList by default "OWNS" the objects it contains:
+  // if we clear the list, the objects contained get automatically destroyed
+  AllocatedInstances:= TObjectList<TCharacterSetECI>.Create;
+
+  TCharacterSetECI.addCharacterSet(  0, ['CP437']);
+  TCharacterSetECI.addCharacterSet(  1, ['ISO-8859-1','ISO8859_1']);
+  TCharacterSetECI.addCharacterSet(  2, ['CP437']);
+  TCharacterSetECI.addCharacterSet(  3, ['ISO-8859-1', 'ISO8859_1']);
+  TCharacterSetECI.addCharacterSet(  4, ['ISO-8859-2', 'ISO8859_2']);
+  TCharacterSetECI.addCharacterSet(  5, ['ISO-8859-3', 'ISO8859_3']);
+  TCharacterSetECI.addCharacterSet(  6, ['ISO-8859-4', 'ISO8859_4']);
+  TCharacterSetECI.addCharacterSet(  7, ['ISO-8859-5', 'ISO8859_5']);
+  TCharacterSetECI.addCharacterSet(  8, ['ISO-8859-6', 'ISO8859_6']);
+  TCharacterSetECI.addCharacterSet(  9, ['ISO-8859-7', 'ISO8859_7']);
+  TCharacterSetECI.addCharacterSet( 10, ['ISO-8859-8', 'ISO8859_8']);
+  TCharacterSetECI.addCharacterSet( 11, ['ISO-8859-9', 'ISO8859_9']);
+  TCharacterSetECI.addCharacterSet( 12, ['ISO-8859-4', 'ISO-8859-10', 'ISO8859_10']);
+  TCharacterSetECI.addCharacterSet( 13, ['ISO-8859-11', 'ISO8859_11']);
+  TCharacterSetECI.addCharacterSet( 15, ['ISO-8859-13', 'ISO8859_13']);
+  TCharacterSetECI.addCharacterSet($10, ['ISO-8859-1', 'ISO-8859-14', 'ISO8859_14']);
+  TCharacterSetECI.addCharacterSet($11, ['ISO-8859-15', 'ISO8859_15']);
+  TCharacterSetECI.addCharacterSet($12, ['ISO-8859-3', 'ISO-8859-16', 'ISO8859_16']);
+  TCharacterSetECI.addCharacterSet( 20, ['SJIS', 'Shift_JIS']);
+  TCharacterSetECI.addCharacterSet($15, ['WINDOWS-1250','CP1250']);
+  TCharacterSetECI.addCharacterSet($16, ['WINDOWS-1251','CP1251']);
+  TCharacterSetECI.addCharacterSet($17, ['WINDOWS-1252','CP1252']);
+  TCharacterSetECI.addCharacterSet($18, ['WINDOWS-1256', 'CP1256']);
+  TCharacterSetECI.addCharacterSet($19, ['UTF-16BE','UNICODEBIG']);
+  TCharacterSetECI.addCharacterSet($1A, ['UTF-8', 'UTF8']);
+  TCharacterSetECI.addCharacterSet($1B, ['US-ASCII']);
+  TCharacterSetECI.addCharacterSet(170, ['US-ASCII']);
+  TCharacterSetECI.addCharacterSet($1C, ['BIG5']);
+  TCharacterSetECI.addCharacterSet($1D, ['GB18030', 'GB2312', 'EUC_CN', 'GBK'] );
+  TCharacterSetECI.addCharacterSet( 30, ['EUC-KR', 'EUC_KR']);
+
+end;
+
+class procedure TCharacterSetECI.addCharacterSet(value: Integer; encodingNames: TArray<string>);
+var
+  t: string;
+  Eci: TCharacterSetECI;
+begin
+  Eci := TCharacterSetECI.Create(value, encodingNames[0]);
+  TCharacterSetECI.VALUE_TO_ECI.AddOrSetValue(value,Eci);   // note : VALUE_TO_ECI[value] := Eci raises "key not found exception": it cant' be used for adding not existing values
+
+  for t in encodingNames do
+     TCharacterSetECI.NAME_TO_ECI.AddOrSetValue(t,Eci);
+end;
+
+class function TCharacterSetECI.getCharacterSetECIByName(name: string)
+  : TCharacterSetECI;
+begin
+  Result := TCharacterSetECI.NAME_TO_ECI[name.ToUpper]
+end;
+
+class function TCharacterSetECI.getCharacterSetECIByValue(value: Integer)
+  : TCharacterSetECI;
+begin
+  if ((value < 0) or (value >= 900)) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  Result := TCharacterSetECI.VALUE_TO_ECI[value];
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Common.BitArray.pas

@@ -0,0 +1,70 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen  
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.Common.BitArray;
+
+interface
+
+type
+  IBitArray = interface
+    ['{3D65F451-E408-4015-A637-73CD05877BCB}']
+     // property getters and setters
+     function GetBit(i: Integer): Boolean;
+     procedure SetBit(i: Integer; Value: Boolean);
+     function GetBits: TArray<Integer>;
+
+     function Size: Integer;
+     function SizeInBytes: Integer;
+
+     property Self[i: Integer]: Boolean read GetBit write SetBit; default;
+     property Bits: TArray<Integer> read GetBits;
+
+     function getNextSet(from: Integer): Integer;
+     function getNextUnset(from: Integer): Integer;
+
+     procedure setBulk(i, newBits: Integer);
+     procedure setRange(start, ending: Integer);
+     procedure appendBit(bit: Boolean);
+     procedure Reverse();
+     procedure clear();
+
+     function isRange(start, ending: Integer; const value: Boolean): Boolean;
+  end;
+
+ TBitArrayHelpers = class
+    class function CreateBitArray:IBitArray; overload;
+    class function CreateBitArray(const Size: Integer):IBitArray; overload;
+ end;
+
+implementation
+uses ZXing.Common.BitArrayImplementation;
+
+class function TBitArrayHelpers.CreateBitArray:IBitArray;
+begin
+  result := ZXing.Common.BitArrayImplementation.NewBitArray;
+end;
+
+
+class function TBitArrayHelpers.CreateBitArray(const Size: Integer):IBitArray;
+begin
+  result := ZXing.Common.BitArrayImplementation.NewBitArray(size);
+end;
+
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Common.BitArrayImplementation.pas

@@ -0,0 +1,468 @@
+unit ZXing.Common.BitArrayImplementation;
+
+interface
+uses ZXing.Common.BitArray;
+
+function NewBitArray:IBitArray; overload;
+function NewBitArray(const Size: Integer):IBitArray; overload;
+
+implementation
+uses
+  System.SysUtils,
+  ZXing.Common.Detector.MathUtils,
+  Math;
+
+
+type
+  /// <summary>
+  /// A simple, fast array of bits, represented compactly by an array of ints internally.
+  /// </summary>
+  TBitArrayImplementation = class(TInterfacedObject, IBitArray)
+  strict private
+    _lookup: TArray<Integer>;
+    Fbits: TArray<Integer>;
+    Fsize: Integer;
+    procedure InitLookup();
+    function GetBit(i: Integer): Boolean;
+    procedure SetBit(i: Integer; Value: Boolean);
+    function makeArray(Size: Integer): TArray<Integer>;
+    procedure ensureCapacity(size: Integer);
+
+
+    function numberOfTrailingZeros(num: Integer): Integer;
+    function GetBits: TArray<Integer>;
+
+  private
+    constructor Create(); overload;
+    constructor Create(const Size: Integer); overload;
+
+  public
+    function Size: Integer;
+    function SizeInBytes: Integer;
+
+    property Self[i: Integer]: Boolean read GetBit write SetBit; default;
+    property Bits: TArray<Integer> read Fbits;
+
+    destructor Destroy; override;
+    function getNextSet(from: Integer): Integer;
+    function getNextUnset(from: Integer): Integer;
+
+    procedure setBulk(i, newBits: Integer);
+   	procedure setRange(start, ending: Integer);
+    procedure appendBit(bit: Boolean);
+    procedure Reverse();
+    procedure clear();
+
+    function isRange(start, ending: Integer;
+      const value: Boolean): Boolean;
+  end;
+
+
+constructor TBitArrayImplementation.Create;
+begin
+  Fsize := 0;
+  SetLength(Fbits, 1);
+  InitLookup();
+end;
+
+constructor TBitArrayImplementation.Create(const Size: Integer);
+begin
+  if (Size < 1)
+  then
+     raise EArgumentException.Create('size must be at least 1.');
+
+  Fsize := Size;
+  Fbits := makeArray(Size);
+  InitLookup();
+end;
+
+procedure TBitArrayImplementation.ensureCapacity(size: Integer);
+var
+  newBits : TArray<Integer>;
+begin
+  if (size > TMathUtils.Asr(Length(Fbits), 5)) then
+  begin
+    newBits := makeArray(size);
+    Move(Fbits[0], newBits[0], Length(Fbits) * SizeOf(Fbits[0]));
+    Fbits := newBits;
+  end;
+end;
+
+destructor TBitArrayImplementation.Destroy;
+begin
+  Fbits := nil;
+  _lookup := nil;
+  inherited;
+end;
+
+function TBitArrayImplementation.GetBit(i: Integer): Boolean;
+begin
+  Result := ((Fbits[TMathUtils.Asr(i, 5)]) and (1 shl (i and $1F))) <> 0;
+end;
+
+function TBitArrayImplementation.GetBits: TArray<Integer>;
+begin
+   result := FBits;
+end;
+
+/// <summary>
+/// Gets the next set.
+/// </summary>
+/// <param name="from">first bit to check</param>
+/// <returns>index of first bit that is set, starting from the given index, or size if none are set
+/// at or beyond this given index</returns>
+function TBitArrayImplementation.getNextSet(from: Integer): Integer;
+var
+  bitsOffset,
+  currentBits : Integer;
+begin
+  if (from >= Fsize) then
+    Exit(FSize);
+
+  bitsOffset := TMathUtils.Asr(from, 5);
+  currentBits := Fbits[bitsOffset];
+  // mask off lesser bits first
+  {$OVERFLOWCHECKS OFF}
+  currentBits := currentBits and -(1 shl (from and $1F));
+  {$OVERFLOWCHECKS ON}
+
+  while (currentBits = 0) do
+  begin
+    Inc(bitsOffset);
+    if (bitsOffset = Length(Fbits)) then
+      Exit(FSize);
+
+    currentBits := Fbits[bitsOffset];
+  end;
+
+  Result := (bitsOffset shl 5) + numberOfTrailingZeros(currentBits);
+  Result := Math.Min(Result, FSize);
+end;
+
+/// <summary>
+/// see getNextSet(int)
+/// </summary>
+/// <param name="from">index to start looking for unset bit</param>
+/// <returns>index of next unset bit, or <see cref="Size"/> if none are unset until the end</returns>
+function TBitArrayImplementation.getNextUnset(from: Integer): Integer;
+var
+  bitsOffset,
+  currentBits: Integer;
+begin
+  if (from >= Fsize) then
+  begin
+    Result := Fsize;
+    exit;
+  end;
+  bitsOffset := TMathUtils.Asr(from, 5);
+  currentBits := not Fbits[bitsOffset];
+
+  // mask off lesser bits first
+  {$OVERFLOWCHECKS OFF}
+  currentBits := currentBits and -(1 shl (from and $1F));
+  {$OVERFLOWCHECKS ON}
+
+  while (currentBits = 0) do
+  begin
+    Inc(bitsOffset);
+    if (bitsOffset = Length(Fbits)) then
+    begin
+      Result := Size;
+      exit;
+    end;
+    currentBits := not Fbits[bitsOffset];
+  end;
+  Result := (bitsOffset shl 5) + numberOfTrailingZeros(currentBits);
+
+  if (Result > Size)
+  then
+     Result := Size;
+end;
+
+procedure TBitArrayImplementation.InitLookup;
+begin
+  _lookup := TArray<Integer>.Create(32, 0, 1, 26, 2, 23, 27, 0, 3, 16, 24, 30,
+    28, 11, 0, 13, 4, 7, 17, 0, 25, 22, 31, 15, 29, 10, 12, 6, 0, 21, 14, 9, 5,
+    20, 8, 19, 18);
+end;
+
+function TBitArrayImplementation.makeArray(Size: Integer): TArray<Integer>;
+var
+  ar: TArray<Integer>;
+begin
+  SetLength(ar, TMathUtils.Asr((Size + 31), 5));
+  Result := ar;
+end;
+
+function TBitArrayImplementation.numberOfTrailingZeros(num: Integer): Integer;
+var
+  index: Integer;
+begin
+  Result := 0;
+
+{$OVERFLOWCHECKS OFF}
+  index := (-num and num) mod 37;
+  if (index < 0) then
+  begin
+    index := index * -1;
+  end;
+
+  if (index >= Low(_lookup)) and (index <= High(_lookup)) then
+    Result := _lookup[index];
+{$OVERFLOWCHECKS ON}
+end;
+
+procedure TBitArrayImplementation.Reverse;
+var
+  newBits: TArray<Integer>;
+  i, len, oldBitsLen, leftOffset, mask, nextInt, currentInt: Integer;
+  x: Int64;
+begin
+
+  SetLength(newBits, Length(Fbits));
+  // reverse all int's first
+  len := TMathUtils.Asr((Size - 1), 5);
+  oldBitsLen := len + 1;
+  for i := 0 to oldBitsLen - 1 do
+  begin
+    x := Fbits[i];
+    x := (TMathUtils.Asr(x, 1) and $55555555) or ((x and $55555555) shl 1);
+    x := (TMathUtils.Asr(x, 2) and $33333333) or ((x and $33333333) shl 2);
+    x := (TMathUtils.Asr(x, 4) and $0F0F0F0F) or ((x and $0F0F0F0F) shl 4);
+    x := (TMathUtils.Asr(x, 8) and $00FF00FF) or ((x and $00FF00FF) shl 8);
+    x := (TMathUtils.Asr(x, 16) and $0000FFFF) or ((x and $0000FFFF) shl 16);
+    newBits[len - i] := integer(x) ;
+  end;
+  // now correct the int's if the bit size isn't a multiple of 32
+  if (Size <> oldBitsLen * 32) then
+  begin
+    leftOffset := oldBitsLen * 32 - Size;
+    mask := 1;
+    for i := 0 to 31 - leftOffset - 1 do
+    begin
+      mask := (mask shl 1) or 1;
+    end;
+
+    currentInt := TMathUtils.Asr(newBits[0], leftOffset) and mask;
+    for i := 1 to oldBitsLen - 1 do
+    begin
+      nextInt := newBits[i];
+      currentInt := currentInt or (nextInt shl (32 - leftOffset));
+      newBits[i - 1] := currentInt;
+      currentInt := TMathUtils.Asr(nextInt, leftOffset) and mask;
+    end;
+    newBits[oldBitsLen - 1] := currentInt;
+  end;
+
+  Fbits := newBits;
+end;
+
+procedure TBitArrayImplementation.SetBit(i: Integer; Value: Boolean);
+var
+  index: Integer;
+begin
+  if (Value) then
+  begin
+    index := TMathUtils.Asr(i, 5);
+    Fbits[index] := Fbits[index] or 1 shl (i and $1F);
+  end;
+end;
+
+function TBitArrayImplementation.Size: Integer;
+begin
+  result := FSize;
+end;
+
+function TBitArrayImplementation.SizeInBytes: Integer;
+begin
+  Result := TMathUtils.Asr(Size + 7, 3);
+end;
+
+/// <summary> Sets a block of 32 bits, starting at bit i.
+///
+/// </summary>
+/// <param name="i">first bit to set
+/// </param>
+/// <param name="newBits">the new value of the next 32 bits. Note again that the least-significant bit
+/// corresponds to bit i, the next-least-significant to i+1, and so on.
+/// </param>
+procedure TBitArrayImplementation.setBulk(i, newBits: Integer);
+var
+  r: Integer;
+begin
+  r := TMathUtils.Asr(i, 5);
+  Fbits[r] := newBits;
+end;
+
+/// <summary>
+/// Sets a range of bits.
+/// </summary>
+/// <param name="start">start of range, inclusive.</param>
+/// <param name="ending">end of range, exclusive</param>
+procedure TBitArrayImplementation.setRange(start, ending: Integer);
+var
+  firstInt,
+  lastInt,
+  mask,
+  i, j : Integer;
+  firstBit,
+  lastBit : Integer;
+begin
+  if (ending < start)
+  then
+     raise EArgumentException.Create('Start is greater than end');
+
+  if (ending = start)
+  then
+     exit;
+  Dec(ending); // will be easier to treat this as the last actually set bit -- inclusive
+  firstInt := TMathUtils.Asr(start, 5);
+  lastInt := TMathUtils.Asr(ending, 5);
+  for i := firstInt to lastInt do
+  begin
+    if (i > firstInt)
+    then
+       firstBit := start
+    else
+       firstBit := $1F;
+    if (i < lastInt)
+    then
+       lastBit := 31
+    else
+       lastBit := (ending and $1F);
+
+    if ((firstBit = 0) and (lastBit = 31))
+    then
+       mask := -1
+    else
+    begin
+      mask := 0;
+      for j := firstBit to lastBit do
+      begin
+        mask := (mask or (1 shl j));
+      end;
+    end;
+    bits[i] := (bits[i] or mask);
+  end;
+end;
+
+/// <summary> Clears all bits (sets to false).</summary>
+procedure TBitArrayImplementation.Clear;
+var
+  max,
+  i: Integer;
+begin
+  max := Length(Fbits);
+  for i := 0 to Pred(max) do
+  begin
+    Fbits[i] := 0;
+  end;
+end;
+
+/// <summary> Efficient method to check if a range of bits is set, or not set.
+///
+/// </summary>
+/// <param name="start">start of range, inclusive.
+/// </param>
+/// <param name="ending">end of range, exclusive
+/// </param>
+/// <param name="value">if true, checks that bits in range are set, otherwise checks that they are not set
+/// </param>
+/// <returns> true iff all bits are set or not set in range, according to value argument
+/// </returns>
+/// <throws>  EIllegalArgumentException if end is less than or equal to start </throws>
+function TBitArrayImplementation.isRange(start, ending: Integer;
+  const value: Boolean): Boolean;
+var
+  firstInt,
+  lastInt,
+  firstBit,
+  lastBit,
+  mask,
+  i, j,
+  temp: Integer;
+begin
+  if (ending = start) then
+  begin
+    Result := true; // empty range matches
+    exit;
+  end;
+  Dec(ending); // will be easier to treat this as the last actually set bit -- inclusive
+
+  firstInt := TMathUtils.Asr(start, 5);
+  lastInt := TMathUtils.Asr(ending, 5);
+  for i := firstInt to lastInt do
+  begin
+    if (i > firstInt)
+  	then
+       firstBit := 0
+    else
+       firstBit := (start and $1F);
+
+    if (i < lastInt)
+	  then
+       lastBit := 31
+    else
+       lastBit := (ending and $1F);
+
+    if ((firstBit = 0) and (lastBit = 31))
+  	then
+       mask := -1
+    else
+    begin
+      mask := 0;
+      for j := firstBit to lastBit do
+        mask := mask or (1 shl j);
+    end;
+
+    // Return false if we're looking for 1s and the masked bits[i] isn't all 1s (that is,
+    // equals the mask, or we're looking for 0s and the masked portion is not all 0s
+    if (Value)
+	  then
+       temp := mask
+  	else
+	   temp := 0;
+
+    if ((Fbits[i] and mask) <> (temp)) then
+    begin
+      Result := False;
+      exit;
+    end;
+  end;
+
+  Result := true;
+end;
+
+/// <summary>
+/// Appends the bit.
+/// </summary>
+/// <param name="bit">The bit.</param>
+procedure TBitArrayImplementation.appendBit(bit: Boolean);
+var
+  i: Integer;
+begin
+  ensureCapacity(Fsize + 1);
+  if (bit) then
+  begin
+    i := TMathUtils.Asr(Fsize, 5);
+    bits[i] := (bits[i] or (Fsize and $1F));
+  end;
+  Dec(Fsize);
+end;
+
+
+
+
+function NewBitArray:IBitArray;
+begin
+   result :=  TBitArrayImplementation.Create;
+end;
+
+
+function NewBitArray(const Size: Integer):IBitArray;
+begin
+   result :=  TBitArrayImplementation.Create(size);
+end;
+
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Common.BitMatrix.pas

@@ -0,0 +1,480 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen and dswitkin@google.com (Daniel Switkin)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.Common.BitMatrix;
+
+interface
+
+uses
+  SysUtils,
+{$IFDEF FRAMEWORK_FMX}
+  FMX.Graphics,
+{$ENDIF}
+{$IFDEF FRAMEWORK_VCL}
+  VCL.Graphics,
+{$ENDIF}
+  Generics.Collections,
+  ZXing.Common.BitArray,
+  ZXing.BarcodeFormat,
+  ZXing.Helpers,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// <p>Represents a 2D matrix of bits. In function arguments below, and throughout the common
+  /// module, x is the column position, and y is the row position. The ordering is always x, y.
+  /// The origin is at the top-left.</p>
+  /// <p>Internally the bits are represented in a 1-D array of 32-bit ints. However, each row begins
+  /// with a new int. This is done intentionally so that we can copy out a row into a BitArray very
+  /// efficiently.</p>
+  /// <p>The ordering of bits is row-major. Within each int, the least significant bits are used first,
+  /// meaning they represent lower x values. This is compatible with BitArray's implementation.</p>
+  /// </summary>
+  TBitMatrix = class sealed
+  private
+    Fbits: TArray<Integer>;
+    Fheight: Integer;
+    FrowSize: Integer;
+    Fwidth: Integer;
+
+    function getBit(x, y: Integer): Boolean;
+    procedure setBit(x, y: Integer; const value: Boolean);
+
+    constructor Create(const width, height, rowSize: Integer;
+      const bits: TArray<Integer>); overload;
+  public
+    constructor Create(const width, height: Integer); overload;
+    constructor Create(const dimension: Integer); overload;
+    destructor Destroy; override;
+
+    procedure clear;
+    function Clone: TObject;
+    function Equals(obj: TObject): Boolean; override;
+    procedure flip(x: Integer; y: Integer);
+    function getBottomRightOnBit: TArray<Integer>;
+    function getEnclosingRectangle: TArray<Integer>;
+    function GetHashCode: Integer; override;
+    function getRow(const y: Integer; row: IBitArray): IBitArray;
+    function getTopLeftOnBit: TArray<Integer>;
+    procedure Rotate180;
+    procedure setRegion(left: Integer; top: Integer; width: Integer;
+      height: Integer);
+    procedure setRow(y: Integer; row: IBitArray);
+    function ToBitmap: TBitmap; overload;
+    function ToBitmap(format: TBarcodeFormat; content: string)
+      : TBitmap; overload;
+
+    property width: Integer read Fwidth;
+    property height: Integer read Fheight;
+    property Matrix[x, y: Integer]: Boolean read getBit write setBit; default;
+    // added for debugging
+    function ToString: string; override;
+  end;
+
+implementation
+
+{ TBitMatrix }
+
+function TBitMatrix.getBit(x, y: Integer): Boolean;
+var
+   offset, v, bits, shift: Int64;
+   uBits: Cardinal;
+begin
+ offset := y * FrowSize + TMathUtils.Asr(x, 5);
+ if ( offset >= Low( FBits ) ) and ( offset <= High( FBits ) ) then
+ begin
+    bits := Fbits[offset];
+    uBits := Cardinal(bits);
+    shift := (x and $1F);
+    v := TMathUtils.Asr(uBits, shift);
+    Result := (v and 1) <> 0;
+ end
+ else
+    Result := False;
+end;
+
+procedure TBitMatrix.setBit(x, y: Integer; const value: Boolean);
+var
+  offset: NativeInt;
+begin
+  if (value) then
+  begin
+    offset := y * FrowSize + TMathUtils.Asr(x, 5);
+    Fbits[offset] := Fbits[offset] or (1 shl (x and $1F));
+  end
+  else
+  begin
+    offset := Trunc(y * FrowSize + (x / 32));
+    Fbits[offset] := Fbits[offset] and (not(1 shl (x and $1F)));
+  end;
+end;
+
+procedure TBitMatrix.clear;
+var
+  max, i: Integer;
+begin
+  max := Length(Fbits);
+  i := 0;
+  while ((i < max)) do
+  begin
+    Fbits[i] := 0;
+    Inc(i);
+  end;
+end;
+
+function TBitMatrix.Clone: TObject;
+var
+  b: TArray<Integer>;
+begin
+  b := TArray.Clone(Fbits);
+  Result := TBitMatrix.Create(Self.Fwidth, Self.Fheight, Self.FrowSize, b);
+end;
+
+constructor TBitMatrix.Create(const width, height, rowSize: Integer;
+  const bits: TArray<Integer>);
+begin
+  if ((width < 1) or (height < 1)) then
+    raise EArgumentException.Create('Both dimensions must be greater than 0');
+
+  Self.Fwidth := width;
+  Self.Fheight := height;
+  Self.FrowSize := rowSize;
+  Self.Fbits := bits;
+end;
+
+constructor TBitMatrix.Create(const width, height: Integer);
+begin
+  if ((width < 1) or (height < 1)) then
+    raise EArgumentException.Create('Both dimensions must be greater than 0');
+
+  Self.Fwidth := width;
+  Self.Fheight := height;
+  Self.FrowSize := TMathUtils.Asr((width + $1F), 5);
+  SetLength(Self.Fbits, Self.FrowSize * height);
+  Self.clear;
+end;
+
+constructor TBitMatrix.Create(const dimension: Integer);
+begin
+  Self.Create(dimension, dimension);
+end;
+
+destructor TBitMatrix.Destroy;
+begin
+  Self.Fbits := nil;
+  inherited;
+end;
+
+function TBitMatrix.Equals(obj: TObject): Boolean;
+var
+  other: TBitMatrix;
+  i, l: Integer;
+begin
+  if (not(obj is TBitMatrix)) then
+  begin
+    Result := false;
+    exit;
+  end;
+
+  other := (obj as TBitMatrix);
+  if ((((Fwidth <> other.Fwidth) or (Fheight <> other.Fheight)) or
+    (FrowSize <> other.FrowSize)) or (Length(Fbits) <> Length(other.Fbits)))
+  then
+  begin
+    Result := false;
+    exit
+  end;
+
+  i := 0;
+  l := Length(Fbits);
+
+  while ((i < l)) do
+  begin
+    if (Fbits[i] <> other.Fbits[i]) then
+    begin
+      Result := false;
+      exit
+    end;
+    Inc(i)
+  end;
+
+  Result := true;
+end;
+
+procedure TBitMatrix.flip(x, y: Integer);
+var
+  offset, s: Integer;
+begin
+  s := TMathUtils.Asr(x, 5);
+  offset := ((y * FrowSize) + s);
+  Fbits[offset] := (Fbits[offset] xor (1 shl x))
+end;
+
+function TBitMatrix.getBottomRightOnBit: TArray<Integer>;
+var
+  bitsOffset, x, y, theBits, bit: Integer;
+begin
+  bitsOffset := Length(Fbits) - 1;
+  while ((bitsOffset >= 0) and (Self.Fbits[bitsOffset] = 0)) do
+  begin
+    dec(bitsOffset)
+  end;
+
+  if (bitsOffset < 0) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  y := (bitsOffset div FrowSize);
+  x := ((bitsOffset mod FrowSize) shl 5);
+  theBits := Fbits[bitsOffset];
+  bit := $1F;
+
+  while ((TMathUtils.Asr(theBits, bit) = 0)) do
+  begin
+    dec(bit);
+  end;
+
+  Inc(x, bit);
+  Result := TArray<Integer>.Create(x, y);
+end;
+
+function TBitMatrix.getEnclosingRectangle: TArray<Integer>;
+var
+  bit, left, top, right, bottom, y, x32, theBits, widthTmp, heightTmp: Integer;
+begin
+  left := Self.Fwidth;
+  top := Self.Fheight;
+  right := -1;
+  bottom := -1;
+  y := 0;
+
+  while ((y < Self.Fheight)) do
+  begin
+    x32 := 0;
+
+    while ((x32 < Self.FrowSize)) do
+    begin
+      theBits := Self.Fbits[((y * Self.FrowSize) + x32)];
+
+      if (theBits <> 0) then
+      begin
+
+        if (y < top) then
+          top := y;
+
+        if (y > bottom) then
+          bottom := y;
+
+        if ((x32 * $20) < left) then
+        begin
+          bit := 0;
+          while (((theBits shl ($1F - bit)) = 0)) do
+          begin
+            Inc(bit)
+          end;
+          if (((x32 * $20) + bit) < left) then
+            left := ((x32 * $20) + bit)
+        end;
+
+        if (((x32 * $20) + $1F) > right) then
+        begin
+          bit := $1F;
+          while ((TMathUtils.Asr(theBits, bit) = 0)) do
+          begin
+            dec(bit)
+          end;
+          if (((x32 * $20) + bit) > right) then
+            right := ((x32 * $20) + bit)
+        end
+      end;
+      Inc(x32)
+    end;
+    Inc(y)
+  end;
+
+  widthTmp := (right - left);
+  heightTmp := (bottom - top);
+
+  if ((widthTmp < 0) or (heightTmp < 0)) then
+  begin
+    Result := nil;
+    exit;
+  end;
+
+  Result := TArray<Integer>.Create(left, top, widthTmp, heightTmp);
+end;
+
+function TBitMatrix.GetHashCode: Integer;
+var
+  bit, hash: Integer;
+begin
+  hash := Self.Fwidth;
+  hash := (($1F * hash) + Self.Fwidth);
+  hash := (($1F * hash) + Self.Fheight);
+  hash := (($1F * hash) + Self.FrowSize);
+
+  for bit in Self.Fbits do
+  begin
+    hash := (($1F * hash) + bit); // .GetHashCode
+  end;
+
+  Result := hash;
+end;
+
+function TBitMatrix.getRow(const y: Integer; row: IBitArray): IBitArray;
+var
+  x, offset: Integer;
+begin
+  if ((row = nil) or (row.Size < Self.Fwidth)) then
+    row := TBitArrayHelpers.CreateBitArray(Self.Fwidth)
+  else
+    row.clear;
+  offset := (y * Self.FrowSize);
+  x := 0;
+
+  while ((x < Self.FrowSize)) do
+  begin
+    row.setBulk((x shl 5), Self.Fbits[(offset + x)]);
+    Inc(x)
+  end;
+
+  Result := row;
+end;
+
+function TBitMatrix.getTopLeftOnBit: TArray<Integer>;
+var
+  bitsOffset, x, y, theBits, bit: Integer;
+begin
+  bitsOffset := 0;
+
+  while (((bitsOffset < Length(Fbits)) and (Fbits[bitsOffset] = 0))) do
+  begin
+    Inc(bitsOffset)
+  end;
+
+  if (bitsOffset = Length(Fbits)) then
+  begin
+    Result := nil;
+    exit
+  end;
+
+  y := (bitsOffset div Self.FrowSize);
+  x := ((bitsOffset mod Self.FrowSize) shl 5);
+  theBits := Self.Fbits[bitsOffset];
+  bit := 0;
+
+  while (((theBits shl ($1F - bit)) = 0)) do
+  begin
+    Inc(bit)
+  end;
+
+  Inc(x, bit);
+  Result := TArray<Integer>.Create(x, y);
+end;
+
+procedure TBitMatrix.Rotate180;
+var
+  i, width, height: Integer;
+  topRow, bottomRow: IBitArray;
+begin
+  width := Self.Fwidth;
+  height := Self.Fheight;
+  topRow := TBitArrayHelpers.CreateBitArray(width);
+  bottomRow := TBitArrayHelpers.CreateBitArray(width);
+  i := 0;
+
+  while ((i < ((height + 1) div 2))) do
+  begin
+    topRow := Self.getRow(i, topRow);
+    bottomRow := Self.getRow(((height - 1) - i), bottomRow);
+    topRow.reverse;
+    bottomRow.reverse;
+    Self.setRow(i, bottomRow);
+    Self.setRow(((height - 1) - i), topRow);
+    Inc(i)
+  end;
+end;
+
+procedure TBitMatrix.setRegion(left, top, width, height: Integer);
+var
+  x, y, offset, right, bottom: Integer;
+begin
+  if ((top < 0) or (left < 0)) then
+    raise EArgumentException.Create('Left and top must be non-negative');
+
+  if ((height < 1) or (width < 1)) then
+    raise EArgumentException.Create('Height and width must be at least 1');
+
+  right := (left + width);
+  bottom := (top + height);
+
+  if ((bottom > Self.Fheight) or (right > Self.Fwidth)) then
+    raise EArgumentException.Create('The region must fit inside the matrix');
+
+  y := top;
+
+  while ((y < bottom)) do
+  begin
+    offset := (y * Self.FrowSize);
+    x := left;
+    while ((x < right)) do
+    begin
+      Fbits[(offset + TMathUtils.Asr(x, 5))] :=
+        (Fbits[(offset + TMathUtils.Asr(x, 5))] or (1 shl x));
+      Inc(x)
+    end;
+    Inc(y)
+  end;
+end;
+
+procedure TBitMatrix.setRow(y: Integer; row: IBitArray);
+begin
+  Fbits := System.Copy(row.bits, (y * FrowSize), FrowSize);
+end;
+
+function TBitMatrix.ToBitmap(format: TBarcodeFormat; content: string): TBitmap;
+begin
+  raise ENotImplemented.Create('Converting to bitmap is not implemented yet!');
+end;
+
+function TBitMatrix.ToString: string;
+var
+  r, c: Integer;
+begin
+  for r := 0 to Fheight - 1 do
+  begin
+    for c := 0 to Fwidth - 1 do
+    begin
+      if Matrix[r, c] then
+        Result := Result + '*'
+      else
+        Result := Result + '.';
+    end;
+    Result := Result + #13#10;
+  end;
+end;
+
+function TBitMatrix.ToBitmap: TBitmap;
+begin
+  Result := ToBitmap(TBarcodeFormat.CODE_128, '')
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Common.DetectorResult.pas

@@ -0,0 +1,63 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.Common.DetectorResult;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.Common.BitMatrix,
+  ZXing.ResultPoint;
+
+type
+  /// <summary> <p>Encapsulates the result of detecting a barcode in an image. This includes the raw
+  /// matrix of black/white pixels corresponding to the barcode, and possibly points of interest
+  /// in the image, like the location of finder patterns or corners of the barcode in the image.</p>
+  /// </summary>
+  TDetectorResult = class
+  private
+    Fbits: TBitmatrix;
+    Fpoints: TArray<IResultPoint>;
+  public
+    constructor Create(const bits: TBitmatrix; const points: TArray<IResultPoint>);
+    destructor Destroy; override;
+
+    property bits: TBitmatrix read Fbits;
+    property points: TArray<IResultPoint> read Fpoints;
+  end;
+
+implementation
+
+constructor TDetectorResult.Create(const bits: TBitmatrix;
+  const points: TArray<IResultPoint>);
+begin
+  Fbits := bits;
+  Fpoints := points;
+end;
+
+destructor TDetectorResult.Destroy;
+begin
+  FPoints := nil;
+  FBits.Free;
+  inherited;
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Common.GridSampler.pas

@@ -0,0 +1,159 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by K. Gossens for Delphi
+}
+
+unit ZXing.Common.GridSampler;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.Common.Bitmatrix,
+  ZXing.Common.PerspectiveTransform;
+
+type
+  TGridSampler = class abstract
+  private
+    class var FgridSampler: TGridSampler;
+    //class constructor Create;
+  protected
+    constructor Create;
+    class function checkAndNudgePoints(image: TBitMatrix; points: TArray<Single>): boolean; static;
+  public
+    function sampleGrid(image: TBitMatrix; dimensionX: Integer;
+      dimensionY: Integer; transform: TPerspectiveTransform): TBitMatrix; overload; virtual;
+    function sampleGrid(image: TBitMatrix; dimensionX: Integer;
+      dimensionY: Integer; p1ToX: Single; p1ToY: Single; p2ToX: Single;
+      p2ToY: Single; p3ToX: Single; p3ToY: Single; p4ToX: Single; p4ToY: Single;
+      p1FromX: Single; p1FromY: Single; p2FromX: Single; p2FromY: Single;
+      p3FromX: Single; p3FromY: Single; p4FromX: Single; p4FromY: Single): TBitMatrix; overload; virtual; abstract;
+    procedure setGridSampler(newGridSampler: TGridSampler); //static;
+
+    class property Instance: TGridSampler read FgridSampler;
+  end;
+
+implementation
+
+{ TGridSampler }
+
+constructor TGridSampler.Create;
+begin
+  inherited Create;
+end;
+
+class function TGridSampler.checkAndNudgePoints(image: TBitMatrix;
+  points: TArray<Single>): boolean;
+var
+  width,
+  height : Integer;
+  nudged : Boolean;
+  offset, maxOffset : Integer;
+  x, y   : Single;
+begin
+  width  := image.Width;
+  height := image.Height;
+  nudged := true;
+  offset := 0;
+  maxOffset := Length(points) - 1; // points.length must be even
+
+  while ((offset < maxOffset) and nudged) do
+  begin
+    x := points[offset];
+    y := points[(offset + 1)];
+    if (((x < -1) or (x > width)) or ((y < -1) or (y > height))) then
+    begin
+      Result := false;
+      exit;
+    end;
+    nudged := false;
+    if (x = -1) then
+    begin
+      points[offset] := 0;
+      nudged := true;
+    end
+    else
+       if (x = width) then
+       begin
+         points[offset] := (width - 1);
+         nudged := true;
+       end;
+       if (y = -1) then
+       begin
+         points[(offset + 1)] := 0;
+         nudged := true;
+       end
+       else
+          if (y = height) then
+          begin
+            points[(offset + 1)] := (height - 1);
+            nudged := true;
+          end;
+    Inc(offset, 2)
+  end;
+  nudged := true;
+  offset := (Length(points) - 2);
+  while (((offset >= 0) and nudged)) do
+  begin
+    x := points[offset];
+    y := points[(offset + 1)];
+    if (((x < -1) or (x > width)) or ((y < -1) or (y > height))) then
+    begin
+      Result := false;
+      exit;
+    end;
+    nudged := false;
+    if (x = -1) then
+    begin
+      points[offset] := 0;
+      nudged := true;
+    end else
+           if (x = width) then
+           begin
+             points[offset] := (width - 1);
+             nudged := true;
+           end;
+    if (y = -1) then
+    begin
+      points[(offset + 1)] := 0;
+      nudged := true
+    end else
+           if (y = height) then
+           begin
+             points[(offset + 1)] := (height - 1);
+             nudged := true;
+           end;
+    dec(offset, 2)
+  end;
+
+  Result := true;
+end;
+
+function TGridSampler.sampleGrid(image: TBitMatrix; dimensionX: Integer;
+  dimensionY: Integer; transform: TPerspectiveTransform): TBitMatrix;
+begin
+  raise ENotSupportedException.Create('Not yet supported');
+end;
+
+procedure TGridSampler.setGridSampler(newGridSampler: TGridSampler);
+begin
+  if (newGridSampler = nil)
+  then
+     raise EArgumentException.Create('Missing arguments');
+  FgridSampler := newGridSampler;
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Common.PerspectiveTransform.pas

@@ -0,0 +1,248 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.Common.PerspectiveTransform;
+
+interface
+
+uses
+  System.SysUtils;
+
+type
+  /// <summary> <p>This class implements a perspective transform in two dimensions. Given four source and four
+  /// destination points, it will compute the transformation implied between them. The code is based
+  /// directly upon section 3.4.2 of George Wolberg's "Digital Image Warping"; see pages 54-56.</p>
+  /// </summary>
+  TPerspectiveTransform = class sealed
+  private
+    a11: Single;
+    a12: Single;
+    a13: Single;
+    a21: Single;
+    a22: Single;
+    a23: Single;
+    a31: Single;
+    a32: Single;
+    a33: Single;
+
+    function buildAdjoint(): TPerspectiveTransform;
+    function times(const other: TPerspectiveTransform): TPerspectiveTransform;
+  public
+    constructor Create(const a11, a21, a31, a12, a22, a32, a13,
+      a23, a33: Single);
+
+    class function quadrilateralToQuadrilateral(const x0, y0, x1, y1, x2, y2,
+      x3, y3, x0p, y0p, x1p, y1p, x2p, y2p,
+      x3p, y3p: Single): TPerspectiveTransform; static;
+
+    class function quadrilateralToSquare(x0: Single; y0: Single; x1: Single;
+      y1: Single; x2: Single; y2: Single; x3: Single; y3: Single)
+      : TPerspectiveTransform; static;
+
+    class function squareToQuadrilateral(const x0, y0, x1, y1, x2, y2,
+      x3, y3: Single): TPerspectiveTransform; static;
+
+    procedure transformPoints(var points: TArray<Single>); overload;
+
+    /// <summary>Convenience method, not optimized for performance. </summary>
+    procedure transformPoints(const xValues, yValues: TArray<Single>); overload;
+  end;
+
+implementation
+
+constructor TPerspectiveTransform.Create(const a11, a21, a31, a12, a22, a32,
+  a13, a23, a33: Single);
+begin
+  Self.a11 := a11;
+  Self.a12 := a12;
+  Self.a13 := a13;
+  Self.a21 := a21;
+  Self.a22 := a22;
+  Self.a23 := a23;
+  Self.a31 := a31;
+  Self.a32 := a32;
+  Self.a33 := a33;
+end;
+
+class function TPerspectiveTransform.quadrilateralToQuadrilateral(const x0, y0,
+  x1, y1, x2, y2, x3, y3, x0p, y0p, x1p, y1p, x2p, y2p,
+  x3p, y3p: Single): TPerspectiveTransform;
+var
+  qToS,
+  SToQ : TPerspectiveTransform;
+begin
+  qToS := nil;
+  SToQ := nil;
+  try
+    qToS := TPerspectiveTransform.quadrilateralToSquare(x0, y0, x1, y1, x2,
+      y2, x3, y3);
+    SToQ := TPerspectiveTransform.squareToQuadrilateral(x0p, y0p, x1p, y1p, x2p,
+      y2p, x3p, y3p);
+
+    Result := SToQ.times(qToS);
+  finally
+
+    //if (SToQ <> nil)
+    //then
+       SToQ.Free;
+
+    //if (qToS <> nil)
+    //then
+       qToS.Free;
+  end;
+end;
+
+class function TPerspectiveTransform.quadrilateralToSquare(x0: Single;
+  y0: Single; x1: Single; y1: Single; x2: Single; y2: Single; x3: Single;
+  y3: Single): TPerspectiveTransform;
+var
+  SToQ: TPerspectiveTransform;
+begin
+  SToQ := nil;
+  // Here, the adjoint serves as the inverse:
+  try
+    SToQ := TPerspectiveTransform.squareToQuadrilateral(x0, y0, x1, y1, x2,
+      y2, x3, y3);
+
+    Result := SToQ.buildAdjoint;
+  finally
+    //if (SToQ <> nil)
+    //then
+       SToQ.Free;
+  end;
+end;
+
+class function TPerspectiveTransform.squareToQuadrilateral(const x0, y0,
+  x1, y1, x2, y2, x3, y3: Single): TPerspectiveTransform;
+var
+  dx1, dx2,
+  dx3, dy1,
+  dy2, dy3,
+  a13, a23,
+  denominator: Single;
+begin
+  dx3 := (((x0 - x1) + x2) - x3);
+  dy3 := (((y0 - y1) + y2) - y3);
+
+  if ((dx3 = 0) and (dy3 = 0)) then
+  begin
+    Result := TPerspectiveTransform.Create((x1 - x0), (x2 - x1), x0, (y1 - y0),
+      (y2 - y1), y0, 0, 0, 1);
+  end else
+  begin
+    dx1 := (x1 - x2);
+    dx2 := (x3 - x2);
+    dy1 := (y1 - y2);
+    dy2 := (y3 - y2);
+    denominator := ((dx1 * dy2) - (dx2 * dy1));
+    if denominator = 0 then
+    begin
+      a13 := 0;
+      a23 := 0;
+    end
+    else
+    begin
+      a13 := (((dx3 * dy2) - (dx2 * dy3)) / denominator);
+      a23 := (((dx1 * dy3) - (dx3 * dy1)) / denominator);
+    end;
+    Result := TPerspectiveTransform.Create(((x1 - x0) + (a13 * x1)),
+      ((x3 - x0) + (a23 * x3)), x0, ((y1 - y0) + (a13 * y1)),
+      ((y3 - y0) + (a23 * y3)), y0, a13, a23, 1);
+  end;
+end;
+
+procedure TPerspectiveTransform.transformPoints(var points: TArray<Single>);
+var
+  max, i: Integer;
+  x, y,
+  denominator: Single;
+begin
+
+
+  a11 := Self.a11;
+  a12 := Self.a12;
+  a13 := Self.a13;
+  a21 := Self.a21;
+  a22 := Self.a22;
+  a23 := Self.a23;
+  a31 := Self.a31;
+  a32 := Self.a32;
+  a33 := Self.a33;
+  i := 0;
+  max := Length(points) - 1;
+  while ((i < max)) do
+  begin
+    x := points[i];
+    y := points[(i + 1)];
+    denominator := (((a13 * x) + (a23 * y)) + a33);
+    points[i] := ((((a11 * x) + (a21 * y)) + a31) / denominator);
+    points[(i + 1)] := ((((a12 * x) + (a22 * y)) + a32) / denominator);
+    Inc(i, 2);
+  end
+end;
+
+procedure TPerspectiveTransform.transformPoints(const xValues,
+  yValues: TArray<Single>);
+var
+  n, i: Integer;
+  x, y, denominator: Single;
+begin
+  n := Length(xValues);
+  for i := 0 to Pred(n) do
+  begin
+    x := xValues[i];
+    y := yValues[i];
+    denominator := (((self.a13 * x) + (self.a23 * y)) + self.a33);
+    xValues[i] := ((((self.a11 * x) + (self.a21 * y)) + self.a31) /
+      denominator);
+    yValues[i] := ((((self.a12 * x) + (self.a22 * y)) + self.a32) /
+      denominator);
+  end
+end;
+
+function TPerspectiveTransform.buildAdjoint(): TPerspectiveTransform;
+begin
+  // Adjoint is the transpose of the cofactor matrix:
+  Result := TPerspectiveTransform.Create(a22 * a33 - a23 * a32,
+                                         a23 * a31 - a21 * a33,
+                                         a21 * a32 - a22 * a31,
+                                         a13 * a32 - a12 * a33,
+                                         a11 * a33 - a13 * a31,
+                                         a12 * a31 - a11 * a32,
+                                         a12 * a23 - a13 * a22,
+                                         a13 * a21 - a11 * a23,
+                                         a11 * a22 - a12 * a21);
+end;
+
+function TPerspectiveTransform.times(
+  const other: TPerspectiveTransform): TPerspectiveTransform;
+begin
+  Result := TPerspectiveTransform.Create(a11 * other.a11 + a21 * other.a12 + a31 * other.a13,
+                                         a11 * other.a21 + a21 * other.a22 + a31 * other.a23,
+                                         a11 * other.a31 + a21 * other.a32 + a31 * other.a33,
+                                         a12 * other.a11 + a22 * other.a12 + a32 * other.a13,
+                                         a12 * other.a21 + a22 * other.a22 + a32 * other.a23,
+                                         a12 * other.a31 + a22 * other.a32 + a32 * other.a33,
+                                         a13 * other.a11 + a23 * other.a12 + a33 * other.a13,
+                                         a13 * other.a21 + a23 * other.a22 + a33 * other.a23,
+                                         a13 * other.a31 + a23 * other.a32 + a33 * other.a33);
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.DecodeHintType.pas

@@ -0,0 +1,127 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+  * Restructured by K. Gossens
+}
+
+unit ZXing.DecodeHintType;
+
+interface
+
+type
+  TDecodeHintType = (
+    /// <summary>
+    /// Unspecified, application-specific hint. Maps to an unspecified <see cref="System.Object" />.
+    /// </summary>
+    OTHER,
+
+    /// <summary>
+    /// Image is a pure monochrome image of a barcode. Doesn't matter what it maps to;
+    /// use <see cref="bool" /> = true.
+    /// </summary>
+    PURE_BARCODE,
+
+    /// <summary>
+    /// Image is known to be of one of a few possible formats.
+    /// Maps to a <see cref="System.Collections.ICollection" /> of <see cref="BarcodeFormat" />s.
+    /// </summary>
+    POSSIBLE_FORMATS,
+
+    /// <summary>
+    /// Spend more time to try to find a barcode; optimize for accuracy, not speed.
+    /// Doesn't matter what it maps to; use <see cref="bool" /> = true.
+    /// </summary>
+    TRY_HARDER,
+
+    /// <summary>
+    /// Specifies what character encoding to use when decoding, where applicable (type String)
+    /// </summary>
+    CHARACTER_SET,
+
+    /// <summary>
+    /// Allowed lengths of encoded data -- reject anything else. Maps to an int[].
+    /// </summary>
+    ALLOWED_LENGTHS,
+
+    /// <summary>
+    /// Assume Code 39 codes employ a check digit. Maps to <see cref="bool" />.
+    /// </summary>
+    ASSUME_CODE_39_CHECK_DIGIT,
+
+    /// <summary>
+    /// The caller needs to be notified via callback when a possible <see cref="TResultPoint" />
+    /// is found. Maps to a <see cref="TResultPointCallback" />.
+    /// </summary>
+    NEED_RESULT_POINT_CALLBACK,
+
+    /// <summary>
+    /// Assume MSI codes employ a check digit. Maps to <see cref="bool" />.
+    /// </summary>
+    ASSUME_MSI_CHECK_DIGIT,
+
+    /// <summary>
+    /// if Code39 could be detected try to use extended mode for full ASCII character set
+    /// Maps to <see cref="bool" />.
+    /// </summary>
+    USE_CODE_39_EXTENDED_MODE,
+
+    /// <summary>
+    /// Don't fail if a Code39 is detected but can't be decoded in extended mode.
+    /// Return the raw Code39 result instead. Maps to <see cref="bool" />.
+    /// </summary>
+    RELAXED_CODE_39_EXTENDED_MODE,
+
+    /// <summary>
+    /// 1D readers supporting rotation with TRY_HARDER enabled.
+    /// But BarcodeReader class can do auto-rotating for 1D and 2D codes.
+    /// Enabling that option prevents 1D readers doing double rotation.
+    /// BarcodeReader enables that option automatically if "global" auto-rotation is enabled.
+    /// Maps to <see cref="bool" />.
+    /// </summary>
+    TRY_HARDER_WITHOUT_ROTATION,
+
+    /// <summary>
+    /// Assume the barcode is being processed as a GS1 barcode, and modify behavior as needed.
+    /// For example this affects FNC1 handling for Code 128 (aka GS1-128). Doesn't matter what it maps to;
+    /// use <see cref="bool" />.
+    /// </summary>
+    ASSUME_GS1,
+
+    /// <summary>
+    /// If true, return the start and end digits in a Codabar barcode instead of stripping them. They
+    /// are alpha, whereas the rest are numeric. By default, they are stripped, but this causes them
+    /// to not be. Doesn't matter what it maps to; use <see cref="bool" />.
+    /// </summary>
+    RETURN_CODABAR_START_END,
+
+    /// <summary>
+    /// Allowed extension lengths for EAN or UPC barcodes. Other formats will ignore this.
+    /// Maps to an <see cref="Array.int" /> of the allowed extension lengths, for example [2], [5], or [2, 5].
+    /// If it is optional to have an extension, do not set this hint. If this is set,
+    /// and a UPC or EAN barcode is found but an extension is not, then no result will be returned
+    /// at all.
+    /// </summary>
+    ALLOWED_EAN_EXTENSIONS,
+    /// <summary>
+    /// Allowes for inversion of an image.
+    ///  Add the to invert the image
+    /// </summary>
+    ENABLE_INVERSION
+    );
+
+implementation
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.DecoderResult.pas

@@ -0,0 +1,90 @@
+unit ZXing.DecoderResult;
+
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+interface
+
+uses SysUtils,
+     Generics.Collections,
+     ZXIng.ByteSegments;
+
+type
+  TDecoderResult = class
+  private
+    function GetStructuredAppend: boolean;
+  public
+    ByteSegments: IByteSegments;
+    ECLevel: string;
+    Erasures: Integer;
+    ErrorsCorrected: Integer;
+    Other: TObject;
+    RawBytes: TArray<Byte>;
+    StructuredAppendParity: Integer;
+    StructuredAppendSequenceNumber: Integer;
+    Text: string;
+
+    constructor Create(RawBytes: TArray<Byte>; const Text: string;
+      ByteSegments: IByteSegments; ECLevel: string); overload;
+    constructor Create(RawBytes: TArray<Byte>; const Text: string;
+      ByteSegments: IByteSegments; ECLevel: string; saSequence: Integer;
+      saParity: Integer); overload;
+    destructor Destroy; override;
+
+    property StructuredAppend: boolean read GetStructuredAppend;
+  end;
+
+implementation
+
+{ TDecoderResult }
+
+constructor TDecoderResult.Create(RawBytes: TArray<Byte>; const Text: String;
+  ByteSegments: IByteSegments; ECLevel: String);
+begin
+  Self.Create(RawBytes, Text, ByteSegments, ECLevel, -1, -1);
+end;
+
+constructor TDecoderResult.Create(RawBytes: TArray<Byte>; const Text: string;
+  ByteSegments: IByteSegments; ECLevel: string;
+  saSequence, saParity: Integer);
+begin
+  if ((RawBytes = nil) and (Text = ''))
+  then
+     raise EArgumentException.Create('Text or rawbytes cannot be nil or empty');
+
+  Self.RawBytes := RawBytes;
+  Self.Text := Text;
+  Self.ByteSegments := ByteSegments;
+  Self.ECLevel := ECLevel;
+  Self.StructuredAppendParity := saParity;
+  Self.StructuredAppendSequenceNumber := saSequence
+end;
+
+destructor TDecoderResult.Destroy;
+begin
+  RawBytes := nil;
+  FreeAndNil(Other);
+  inherited;
+end;
+
+function TDecoderResult.GetStructuredAppend: boolean;
+begin
+  result := (StructuredAppendParity >= 0) and
+    (StructuredAppendSequenceNumber >= 0);
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.DefaultGridSampler.pas

@@ -0,0 +1,266 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.DefaultGridSampler;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Math,
+  ZXing.Common.BitMatrix,
+  ZXing.Common.PerspectiveTransform,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  // TODO(KG) Add GridSampler basis class
+  TDefaultGridSampler = class //(TGridSampler)
+  private
+    class var GridSampler: TDefaultGridSampler;
+    class function get_Instance(): TDefaultGridSampler; static;
+  protected
+    /// <summary> <p>Checks a set of points that have been transformed to sample points on an image against
+    /// the image's dimensions to see if the point are even within the image.</p>
+    ///
+    /// <p>This method will actually "nudge" the endpoints back onto the image if they are found to be
+    /// barely (less than 1 pixel) off the image. This accounts for imperfect detection of finder
+    /// patterns in an image where the QR Code runs all the way to the image border.</p>
+    ///
+    /// <p>For efficiency, the method will check points from either end of the line until one is found
+    /// to be within the image. Because the set of points are assumed to be linear, this is valid.</p>
+    ///
+    /// </summary>
+    /// <param name="image">image into which the points should map
+    /// </param>
+    /// <param name="points">actual points in x1,y1,...,xn,yn form
+    /// </param>
+    class function checkAndNudgePoints(const image: TBitMatrix;
+      const points: TArray<Single>): boolean; static;
+  public
+    class function sampleGrid(const image: TBitMatrix;
+      const dimensionX, dimensionY: Integer;
+      const p1ToX, p1ToY, p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY,
+      p1FromX, p1FromY, p2FromX, p2FromY, p3FromX, p3FromY, p4FromX,
+      p4FromY: Single): TBitMatrix; overload; static;
+
+    class function sampleGrid(const image: TBitMatrix;
+      const dimensionX, dimensionY: Integer;
+      const transform: TPerspectiveTransform): TBitMatrix; overload; static;
+
+    class procedure setGridSampler(newGridSampler: TDefaultGridSampler); static;
+
+    // Properties
+    class property Instance: TDefaultGridSampler read get_Instance;
+
+  end;
+
+implementation
+
+{ TDefaultGridSampler }
+
+class function TDefaultGridSampler.sampleGrid(const image: TBitMatrix;
+  const dimensionX, dimensionY: Integer; const p1ToX, p1ToY, p2ToX, p2ToY,
+  p3ToX, p3ToY, p4ToX, p4ToY, p1FromX, p1FromY, p2FromX, p2FromY, p3FromX,
+  p3FromY, p4FromX, p4FromY: Single): TBitMatrix;
+var
+  transform: TPerspectiveTransform;
+begin
+  transform := TPerspectiveTransform.quadrilateralToQuadrilateral(p1ToX, p1ToY,
+    p2ToX, p2ToY, p3ToX, p3ToY, p4ToX, p4ToY, p1FromX, p1FromY, p2FromX,
+    p2FromY, p3FromX, p3FromY, p4FromX, p4FromY);
+
+  try
+    Result := sampleGrid(image, dimensionX, dimensionY, transform);
+  finally
+    transform.free;
+  end;
+
+end;
+
+class function TDefaultGridSampler.sampleGrid(const image: TBitMatrix;
+  const dimensionX, dimensionY: Integer;
+  const transform: TPerspectiveTransform) : TBitMatrix;
+var
+  bits: TBitMatrix;
+  points: TArray<Single>;
+  y, x, max: Integer;
+  iValue: Single;
+begin
+  Result := nil;
+
+  if ((dimensionX <= 0) or
+      (dimensionY <= 0))
+  then
+     exit;
+
+  bits := TBitMatrix.Create(dimensionX, dimensionY);
+  points := TArray<Single>.Create();
+  SetLength(points, dimensionX shl 1);
+
+  try
+    for y := 0 to Pred(dimensionY) do
+    begin
+      max := Length(points) - 1;
+      iValue := (y + 0.5);
+      x := 0;
+      while ((x < max)) do
+      begin
+        points[x] := TMathUtils.Asr(x, 1) + 0.5;
+        points[(x + 1)] := iValue;
+        Inc(x, 2);
+      end;
+      transform.transformPoints(points);
+
+      // Quick check to see if points transformed to something inside the image;
+      // sufficient to check the endpoints
+      if (not checkAndNudgePoints(image, points)) then
+      begin
+        bits.Free;
+        exit;
+      end;
+
+      try
+        x := 0;
+        while (x < max) do
+        begin
+          bits[(TMathUtils.Asr(x, 1)), y] := image[Floor(points[x]), Floor(points[x + 1])];
+          Inc(x, 2);
+        end
+      except
+        // This feels wrong, but, sometimes if the finder patterns are misidentified, the resulting
+        // transform gets "twisted" such that it maps a straight line of points to a set of points
+        // whose endpoints are in bounds, but others are not. There is probably some mathematical
+        // way to detect this about the transformation that I don't know yet.
+        // This results in an ugly runtime exception despite our clever checks above -- can't have
+        // that. We could check each point's coordinates but that feels duplicative. We settle for
+        // catching and wrapping ArrayIndexOutOfBoundsException.
+        exit;
+      end;
+    end;
+  finally
+    points := nil;
+  end;
+  Result := bits;
+end;
+
+class function TDefaultGridSampler.checkAndNudgePoints(const image: TBitMatrix;
+  const points: TArray<Single>): Boolean;
+var
+  offset,
+  x, y,
+  width, height : Integer;
+  nudged : Boolean;
+begin
+  width  := image.width;
+  height := image.height;
+  // Check and nudge points from start until we see some that are OK:
+  nudged := true;
+  offset := 0;
+
+  while ((offset < (Length(points) - 1)) and nudged) do
+  begin
+    x := Floor(points[offset]);
+    y := Floor(points[(offset + 1)]);
+    if ((((x < -1) or (x > width)) or (y < -1)) or (y > height)) then
+    begin
+      Result := false;
+      exit
+    end;
+    nudged := false;
+    if (x = -1) then
+    begin
+      points[offset] := 0;
+      nudged := true
+    end
+    else if (x = width) then
+    begin
+      points[offset] := (width - 1);
+      nudged := true
+    end;
+    if (y = -1) then
+    begin
+      points[(offset + 1)] := 0;
+      nudged := true
+    end
+    else if (y = height) then
+    begin
+      points[(offset + 1)] := (height - 1);
+      nudged := true
+    end;
+    inc(offset, 2)
+  end;
+
+  // Check and nudge points from end:
+  nudged := true;
+  offset := (Length(points) - 2);
+  while ((offset >= 0) and nudged) do
+  begin
+    x := Floor(points[offset]);
+    y := Floor(points[(offset + 1)]);
+    if ((((x < -1) or (x > width)) or (y < -1)) or (y > height)) then
+    begin
+      Result := false;
+      exit
+    end;
+    nudged := false;
+    if (x = -1) then
+    begin
+      points[offset] := 0;
+      nudged := true
+    end
+    else if (x = width) then
+    begin
+      points[offset] := (width - 1);
+      nudged := true
+    end;
+    if (y = -1) then
+    begin
+      points[(offset + 1)] := 0;
+      nudged := true
+    end
+    else if (y = height) then
+    begin
+      points[(offset + 1)] := (height - 1);
+      nudged := true
+    end;
+    Dec(offset, 2);
+  end;
+
+  Result := true;
+end;
+
+class function TDefaultGridSampler.get_Instance: TDefaultGridSampler;
+begin
+  GridSampler := TDefaultGridSampler.Create();
+  Result := GridSampler;
+end;
+
+class procedure TDefaultGridSampler.setGridSampler(newGridSampler
+  : TDefaultGridSampler);
+begin
+  if (newGridSampler = nil) then
+  begin
+    raise EArgumentException.Create('Arguments in error');
+  end;
+
+  GridSampler := newGridSampler;
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.EncodeHintType.pas

@@ -0,0 +1,43 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+  * Restructured by K. Gossens
+}
+
+unit ZXing.EncodeHintType;
+
+interface
+
+type
+  TEncodeHintType = (AZTEC_LAYERS = 15, 
+                     CHARACTER_SET = 4, 
+					 CODE128_FORCE_CODESET_B = 13,
+                     DATA_MATRIX_DEFAULT_ENCODATION = 14,					 
+					 DATA_MATRIX_SHAPE = 10, 
+					 DISABLE_ECI = 9, 
+					 ERROR_CORRECTION = 3, 
+					 HEIGHT = 1, 
+					 MARGIN = 5, 
+					 MAX_SIZE = 12, 
+					 MIN_SIZE = 11, 
+					 PDF417_COMPACTION = 7, 
+					 PDF417_DIMENSIONS = 8, 
+					 PURE_BARCODE = 2, 
+					 WIDTH = 0);
+
+implementation
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Helpers.pas

@@ -0,0 +1,62 @@
+unit ZXing.Helpers;
+
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+interface
+
+type
+  TArray = class
+    class function Clone(original: TArray<Integer>): TArray<Integer>; static;
+    class function CopyInSameArray(const Input: TArray<Integer>;
+      StartIndex: Integer; Len: Integer): TArray<Integer>; static;
+  end;
+
+implementation
+
+class function TArray.Clone(original: TArray<Integer>): TArray<Integer>;
+var
+  i: Integer;
+  l: SmallInt;
+begin
+  l := Length(original);
+  Result := TArray<Integer>.Create();
+  SetLength(Result, l);
+
+  for i := 0 to l - 1 do
+  begin
+    Result[i] := original[i];
+  end;
+end;
+
+class function TArray.CopyInSameArray(const Input: TArray<Integer>;
+  StartIndex: Integer; Len: Integer): TArray<Integer>;
+var
+  i, y: Integer;
+begin
+  Result := TArray.Clone(Input);
+
+  y := 0;
+  for i := StartIndex to (StartIndex + Len -1) do
+  begin
+    Result[y] := Input[i];
+    inc(y);
+  end;
+
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.MultiFormatReader.pas

@@ -0,0 +1,350 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen and dswitkin@google.com (Daniel Switkin)
+  * Ported from ZXING Java Source: www.Redivivus.in (suraj.supekar@redivivus.in)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.MultiFormatReader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Rtti,
+  System.Generics.Collections,
+  System.RegularExpressions,
+  ZXing.ReadResult,
+  ZXing.Reader,
+  ZXing.DecodeHintType,
+  ZXing.BinaryBitmap,
+  ZXing.BarcodeFormat,
+  ZXing.ResultPoint,
+
+  // 1D Barcodes
+  ZXing.OneD.OneDReader,
+  ZXing.OneD.Code128Reader,
+  ZXing.OneD.Code93Reader,
+  ZXing.OneD.ITFReader,
+  ZXing.OneD.EAN13Reader,
+  ZXing.OneD.EAN8Reader,
+  ZXing.OneD.UPCAReader,
+  ZXing.OneD.UPCEReader,
+  ZXing.OneD.Code39Reader,
+
+  // 2D Codes
+  ZXing.QrCode.QRCodeReader,
+  ZXing.Datamatrix.DataMatrixReader;
+
+/// <summary>
+/// MultiFormatReader is a convenience class and the main entry point into the library for most uses.
+/// By default it attempts to decode all barcode formats that the library supports. Optionally, you
+/// can provide a hints object to request different behavior, for example only decoding QR codes.
+/// </summary>
+/// <author>Sean Owen</author>
+/// <author>dswitkin@google.com (Daniel Switkin)</author>
+/// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source</author>
+type
+
+  TMultiFormatReader = class(TInterfacedObject, IReader)
+  private
+
+    FHints: TDictionary<TDecodeHintType, TObject>;
+    readers: TList<IReader>;
+
+    function DecodeInternal(image: TBinaryBitmap): TReadResult;
+    procedure Set_Hints(const Value: TDictionary<TDecodeHintType, TObject>);
+    function Get_Hints: TDictionary<TDecodeHintType, TObject>;
+
+    /// <summary> This version of decode honors the intent of Reader.decode(BinaryBitmap) in that it
+    /// passes null as a hint to the decoders. However, that makes it inefficient to call repeatedly.
+    /// Use setHints() followed by decodeWithState() for continuous scan applications.
+    ///
+    /// </summary>
+    /// <param name="image">The pixel data to decode
+    /// </param>
+    /// <returns> The contents of the image
+    /// </returns>
+    /// <throws>  ReaderException Any errors which occurred </throws>
+  public
+    function decode(const image: TBinaryBitmap): TReadResult; overload;
+    function decode(const image: TBinaryBitmap; WithHints: Boolean)
+      : TReadResult; overload;
+    /// <summary> Decode an image using the hints provided. Does not honor existing state.
+    ///
+    /// </summary>
+    /// <param name="image">The pixel data to decode
+    /// </param>
+    /// <param name="hints">The hints to use, clearing the previous state.
+    /// </param>
+    /// <returns> The contents of the image
+    /// </returns>
+    /// <throws>  ReaderException Any errors which occurred </throws>
+    function decode(const image: TBinaryBitmap;
+      hints: TDictionary<TDecodeHintType, TObject>): TReadResult; overload;
+
+    /// <summary> Decode an image using the state set up by calling setHints() previously. Continuous scan
+    /// clients will get a <b>large</b> speed increase by using this instead of decode().
+    ///
+    /// </summary>
+    /// <param name="image">The pixel data to decode
+    /// </param>
+    /// <returns> The contents of the image
+    /// </returns>
+    /// <throws>  ReaderException Any errors which occurred </throws>
+    function DecodeWithState(image: TBinaryBitmap): TReadResult;
+    destructor Destroy; override;
+
+    /// <summary> This method adds state to the MultiFormatReader. By setting the hints once, subsequent calls
+    /// to decodeWithState(image) can reuse the same set of readers without reallocating memory. This
+    /// is important for performance in continuous scan clients.
+    ///
+    /// </summary>
+    /// <param name="hints">The set of hints to use for subsequent calls to decode(image)
+    /// </param>
+    property hints: TDictionary<TDecodeHintType, TObject> read Get_Hints
+      write Set_Hints;
+
+    procedure Reset;
+    procedure FreeReaders();
+
+  end;
+
+implementation
+
+function TMultiFormatReader.decode(const image: TBinaryBitmap): TReadResult;
+begin
+  hints := nil;
+  result := DecodeInternal(image)
+end;
+
+function TMultiFormatReader.decode(const image: TBinaryBitmap;
+  WithHints: Boolean): TReadResult;
+begin
+  result := DecodeInternal(image)
+end;
+
+function TMultiFormatReader.decode(const image: TBinaryBitmap;
+  hints: TDictionary<TDecodeHintType, TObject>): TReadResult;
+begin
+  FHints := hints;
+  result := DecodeInternal(image)
+end;
+
+function TMultiFormatReader.DecodeWithState(image: TBinaryBitmap): TReadResult;
+begin
+  // Make sure to set up the default state so we don't crash
+  if readers = nil then
+  begin
+    hints := nil
+  end;
+
+  result := DecodeInternal(image);
+
+end;
+
+destructor TMultiFormatReader.Destroy;
+begin
+  FreeReaders;
+  inherited;
+end;
+
+procedure TMultiFormatReader.FreeReaders;
+begin
+  if readers <> nil then
+    readers.Clear();
+
+  readers.Free;
+  readers := nil;
+end;
+
+function TMultiFormatReader.Get_Hints: TDictionary<TDecodeHintType, TObject>;
+begin
+  result := FHints;
+end;
+
+procedure TMultiFormatReader.Set_Hints(const Value: TDictionary<TDecodeHintType,
+  TObject>);
+var
+  useCode39CheckDigit, useCode39ExtendedMode: Boolean;
+  formats: TList<TBarcodeFormat>;
+begin
+  FHints := Value;
+
+  // tryHarder := (Value <> nil) and
+  // (Value.ContainsKey(ZXing.DecodeHintType.TRY_HARDER));
+
+  if ((Value = nil) or
+    (not Value.ContainsKey(ZXing.DecodeHintType.POSSIBLE_FORMATS))) then
+  begin
+    formats := nil;
+  end
+  else
+  begin
+    formats := Value[ZXing.DecodeHintType.POSSIBLE_FORMATS]
+      as TList<TBarcodeFormat>
+  end;
+
+  // add readers from the hints
+  readers := TList<IReader>.Create;
+  if formats <> nil then
+  begin
+
+    // 1D readers
+
+    if (formats.Contains(TBarcodeFormat.CODE_128)) then
+    begin
+      readers.Add(TCode128Reader.Create())
+    end;
+
+    if (formats.Contains(TBarcodeFormat.CODE_93)) then
+    begin
+      readers.Add(TCode93Reader.Create())
+    end;
+
+    if (formats.Contains(TBarcodeFormat.ITF)) then
+    begin
+      readers.Add(TITFReader.Create())
+    end;
+
+    // 2D readers
+    if (formats.Contains(TBarcodeFormat.QR_CODE)) then
+    begin
+      readers.Add(TQRCodeReader.Create())
+    end;
+
+    if formats.Contains(TBarcodeFormat.DATA_MATRIX) then
+      readers.Add(TDataMatrixReader.Create);
+
+    if (formats.Contains(TBarcodeFormat.EAN_13)) then
+      readers.Add(TEAN13Reader.Create());
+
+    if (formats.Contains(TBarcodeFormat.EAN_8)) then
+      readers.Add(TEAN8Reader.Create());
+
+    if (formats.Contains(TBarcodeFormat.UPC_A)) then
+      readers.Add(TUPCAReader.Create());
+
+    if (formats.Contains(TBarcodeFormat.UPC_E)) then
+      readers.Add(TUPCEReader.Create());
+
+    if (formats.Contains(TBarcodeFormat.CODE_39)) then
+    begin
+      useCode39CheckDigit := hints.ContainsKey
+        (TDecodeHintType.ASSUME_CODE_39_CHECK_DIGIT) and
+        hints.ContainsKey(TDecodeHintType.ASSUME_CODE_39_CHECK_DIGIT);
+
+      useCode39ExtendedMode := hints.ContainsKey
+        (TDecodeHintType.USE_CODE_39_EXTENDED_MODE) and
+        hints.ContainsKey(TDecodeHintType.USE_CODE_39_EXTENDED_MODE);
+
+      readers.Add(TCode39Reader.Create(useCode39CheckDigit,
+        useCode39ExtendedMode));
+
+    end;
+  end;
+
+  if (readers.Count = 0) then // must be auto, add them all
+  begin
+
+    // 1D readers
+    readers.Add(TCode128Reader.Create());
+    readers.Add(TUPCAReader.Create());
+    readers.Add(TUPCEReader.Create());
+    readers.Add(TEAN13Reader.Create());
+    readers.Add(TEAN8Reader.Create());
+    readers.Add(TCode93Reader.Create());
+    readers.Add(TITFReader.Create());
+    useCode39CheckDigit := hints.ContainsKey
+      (TDecodeHintType.ASSUME_CODE_39_CHECK_DIGIT) and hints.ContainsKey
+      (TDecodeHintType.ASSUME_CODE_39_CHECK_DIGIT);
+
+    useCode39ExtendedMode := hints.ContainsKey
+      (TDecodeHintType.USE_CODE_39_EXTENDED_MODE) and hints.ContainsKey
+      (TDecodeHintType.USE_CODE_39_EXTENDED_MODE);
+
+    readers.Add(TCode39Reader.Create(useCode39CheckDigit,
+      useCode39ExtendedMode));
+
+
+    // 2D readers
+    readers.Add(TQRCodeReader.Create());
+    readers.Add(TDataMatrixReader.Create)
+  end;
+
+end;
+
+procedure TMultiFormatReader.Reset;
+var
+  Reader: IReader;
+begin
+  if readers <> nil then
+  begin
+    for Reader in readers do
+    begin
+      Reader.Reset();
+    end
+  end
+end;
+
+function TMultiFormatReader.DecodeInternal(image: TBinaryBitmap): TReadResult;
+var
+  rpCallBack: TResultPointCallback;
+  i: integer;
+  Reader: IReader;
+begin
+
+  result := nil;
+  if (readers = nil) then
+  begin
+    Exit;
+  end;
+
+  rpCallBack := nil;
+  if ((FHints <> nil) and
+    (FHints.ContainsKey(ZXing.DecodeHintType.NEED_RESULT_POINT_CALLBACK))) then
+  begin
+    // rpCallBack := FHints[DecodeHintType.NEED_RESULT_POINT_CALLBACK]
+    // as TResultPointCallback(nil);
+  end;
+
+  for i := 0 to readers.Count - 1 do
+  begin
+
+    Reader := readers[i];
+    Reader.Reset();
+    result := Reader.decode(image, FHints);
+    if result <> nil then
+    begin
+
+      // found a barcode, pushing the successful reader up front
+      // I assume that the same type of barcode is read multiple times
+      // so the reordering of the readers list should speed up the next reading
+      // a little bit
+
+      readers.Delete(i);
+      readers.Insert(0, Reader);
+      Exit;
+    end;
+
+    // if rpCallBack <> nil then
+    // rpCallBack(nil)
+
+  end;
+
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.ReadResult.pas

@@ -0,0 +1,344 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: bbrown@google.com (Brian Brown)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+unit ZXing.ReadResult;
+
+interface
+
+uses
+  System.SysUtils,
+  Generics.Collections,
+  ZXing.ResultPoint,
+  ZXing.ResultMetadataType,
+  ZXing.BarcodeFormat,
+  ZXing.ByteSegments;
+
+type
+
+  IMetaData = Interface
+    ['{27AEB2C5-D775-44C6-9816-3E69025CA57C}']
+  end;
+
+  IStringMetadata = interface(IMetaData)
+     ['{8073F897-30AD-49B7-AE0B-B187D3373163}']
+     function Value:String;
+  end;
+
+  IIntegerMetadata = interface(IMetaData)
+     ['{CA60A23A-57ED-4C8E-9886-4F23B832A90C}']
+     function Value:Integer;
+  end;
+
+  IByteSegmentsMetadata = interface(IMetaData)
+     ['{CA60A23A-57ED-4C8E-9886-4F23B832A90C}']
+     function Value:IByteSegments;
+  end;
+
+  /// <summary>
+  ///  represents the metadata contained in a TReadResult and provides the
+  ///  helping functions needed to create them
+  /// </summary>
+  TResultMetaData = class(TDictionary<TResultMetadataType, IMetaData>)
+  public
+     constructor Create;
+     class function CreateStringMetadata(const Value:string) :IStringMetaData;
+     class function CreateIntegerMetadata(const Value:integer) :IIntegerMetaData;
+     class function CreateByteSegmentsMetadata(const Value:IByteSegments) :IByteSegmentsMetadata;
+  end;
+
+  TReadResult = class
+  private
+    FText: string;
+    FTimeStamp: TDateTime;
+    FResultMetadata: TResultMetaData;
+    FRawBytes: TArray<Byte>;
+    FResultPoints: TArray<IResultPoint>;
+    FFormat: TBarcodeFormat;
+
+    procedure SetText(const AValue: String);
+    procedure SetMetaData( const Value: TResultMetadata);
+  public
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TReadResult"/> class.
+    /// </summary>
+    /// <param name="text">The text.</param>
+    /// <param name="rawBytes">The raw bytes.</param>
+    /// <param name="resultPoints">The result points.</param>
+    /// <param name="format">The format.</param>
+    constructor Create(const text: string; const rawBytes: TArray<Byte>;
+      const resultPoints: TArray<IResultPoint>;
+      const format: TBarcodeFormat); overload;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TReadResult"/> class.
+    /// </summary>
+    /// <param name="text">The text.</param>
+    /// <param name="rawBytes">The raw bytes.</param>
+    /// <param name="resultPoints">The result points.</param>
+    /// <param name="format">The format.</param>
+    /// <param name="timestamp">The timestamp.</param>
+    constructor Create(const text: string; const rawBytes: TArray<Byte>;
+      const resultPoints: TArray<IResultPoint>; const format: TBarcodeFormat;
+      const timeStamp: TDateTime); overload;
+    destructor Destroy; override;
+
+    function ToString: String; override;
+
+    // we need a "write" procedure accessor because we need to properly deallocate
+    // existing instance if we overwrite it with another one
+    property ResultMetaData: TResultMetadata
+      read FResultMetadata write SetMetaData;
+
+    /// <summary>
+    /// Adds one metadata to the result
+    /// </summary>
+    /// <param name="type">The type.</param>
+    /// <param name="value">The value.</param>
+    procedure putMetadata(const ResultMetadataType: TResultMetadataType;
+      const Value: IMetaData);
+
+    /// <summary>
+    /// Adds a list of metadata to the result
+    /// </summary>
+    /// <param name="metadata">The metadata.</param>
+    procedure putAllMetaData(const metaData: TResultMetadata);
+
+    /// <summary>
+    /// Adds the result points.
+    /// </summary>
+    /// <param name="newPoints">The new points.</param>
+    procedure addResultPoints(const newPoints: TArray<IResultPoint>);
+
+    /// <returns>raw text encoded by the barcode, if applicable, otherwise <code>null</code></returns>
+    property text: String read FText write SetText;
+
+    /// <returns>raw bytes encoded by the barcode, if applicable, otherwise <code>null</code></returns>
+    property rawBytes: TArray<Byte> read FRawBytes write FRawBytes;
+
+    /// <returns>
+    /// points related to the barcode in the image. These are typically points
+    /// identifying finder patterns or the corners of the barcode. The exact meaning is
+    /// specific to the type of barcode that was decoded.
+    /// </returns>
+    property resultPoints: TArray<IResultPoint> read FResultPoints
+      write FResultPoints;
+
+    /// <returns>{@link TBarcodeFormat} representing the format of the barcode that was decoded</returns>
+    property BarcodeFormat: TBarcodeFormat read FFormat write FFormat;
+
+    /// <summary>
+    /// Gets the timestamp.
+    /// </summary>
+    property timeStamp: TDateTime read FTimeStamp;
+  end;
+
+implementation
+
+
+{$REGION 'IMetaData implementations'}
+
+{ TStringMetadata }
+type
+  TStringMetadata = class(TInterfacedObject,IMetaData,IStringMetadata)
+  strict private
+    FValue: String;
+    function Value: String;
+  private
+    constructor Create(const AValue: String);
+  end;
+
+function TStringMetadata.Value: String;
+begin
+   result := FValue
+end;
+
+constructor TStringMetadata.Create(const AValue: string);
+begin
+  inherited Create;
+  FValue := AValue;
+end;
+
+{ TIntegerMetadata }
+type
+  TIntegerMetadata = class(TInterfacedObject,IMetaData,IIntegerMetadata)
+  strict private
+    FValue: Integer;
+    function Value: Integer;
+  private
+    constructor Create(const AValue: Integer);
+  end;
+
+function TIntegerMetadata.Value: Integer;
+begin
+   result := FValue
+end;
+
+constructor TIntegerMetadata.Create(const AValue: Integer);
+begin
+  inherited Create;
+  FValue := AValue;
+end;
+
+
+{ TByteSegmentsMetadata }
+type
+  TByteSegmentsMetadata = class(TInterfacedObject,IMetaData,IByteSegmentsMetadata)
+  strict private
+    FValue: IByteSegments;
+    function Value: IByteSegments;
+  private
+    constructor Create(const AValue: IByteSegments);
+  end;
+
+function TByteSegmentsMetadata.Value: IByteSegments;
+begin
+   result := FValue
+end;
+
+constructor TByteSegmentsMetadata.Create(const AValue: IByteSegments);
+begin
+  inherited Create;
+  FValue := AValue;
+end;
+
+{ TResultMetadata }
+constructor TResultMetaData.Create;
+begin
+   inherited Create;
+end;
+
+class function TResultMetadata.CreateStringMetadata(const Value:string) :IStringMetaData;
+begin
+   result := TStringMetadata.Create(Value);
+end;
+
+class function TResultMetaData.CreateByteSegmentsMetadata(
+  const Value: IByteSegments): IByteSegmentsMetadata;
+begin
+   result := TByteSegmentsMetadata.Create(value);
+end;
+
+class function TResultMetadata.CreateIntegerMetadata(const Value:integer) :IIntegerMetaData;
+begin
+   result := TIntegerMetadata.Create(Value);
+end;
+
+{$ENDREGION 'IMetaData implementations'}
+
+
+{ TReadResult }
+
+constructor TReadResult.Create(const text: String; const rawBytes: TArray<Byte>;
+  const resultPoints: TArray<IResultPoint>; const format: TBarcodeFormat);
+begin
+  Self.Create(text, rawBytes, resultPoints, format, Now);
+end;
+
+constructor TReadResult.Create(const text: String; const rawBytes: TArray<Byte>;
+  const resultPoints: TArray<IResultPoint>; const format: TBarcodeFormat;
+  const timeStamp: TDateTime);
+begin
+  if ((text = '') and (rawBytes = nil)) then
+    raise EArgumentException.Create('Text and bytes are null.');
+
+  SetText(text);
+  FRawBytes := rawBytes;
+  FResultPoints := resultPoints;
+  FResultMetadata := nil;
+  FFormat := format;
+  FResultMetadata := nil;
+  FTimeStamp := timeStamp;
+end;
+
+destructor TReadResult.Destroy;
+var i:Integer;
+begin
+
+  for I := Low(FResultPoints) to High(FResultPoints) do
+  begin
+    FResultPoints[i] := nil;
+  end;
+
+  FResultPoints := nil;
+  FRawBytes := nil;
+
+  if FResultMetadata <> nil then
+  begin
+    FResultMetadata.Clear;
+    FreeAndNil(FResultMetadata);
+  end;
+
+  inherited;
+end;
+
+// Added (KG): UTF-8 compatiblity
+procedure TReadResult.SetMetaData(const Value: TResultMetadata);
+begin
+  if value = FResultMetadata then
+    exit; // no change
+  if FResultMetadata<>nil then
+    FResultMetadata.Free; // we need to free existing object instance, for old-gen compilers
+  FResultMetadata := Value;
+end;
+
+procedure TReadResult.SetText(const AValue: String);
+begin
+  FText := AValue;
+end;
+
+procedure TReadResult.putMetadata(const ResultMetadataType: TResultMetadataType;
+  const Value: IMetaData);
+begin
+  if (FResultMetadata = nil) then
+    FResultMetadata := TResultMetadata.Create();
+  FResultMetadata.AddOrSetValue(ResultMetadataType, Value);
+end;
+
+procedure TReadResult.putAllMetaData(const metaData: TResultMetadata);
+var
+  key: TResultMetadataType;
+begin
+  if (metaData <> nil) then
+  begin
+    if (FResultMetadata = nil) then
+      FResultMetadata := TResultMetadata.Create();
+    for key in metaData.Keys do
+      FResultMetadata.AddOrSetValue(key, metaData[key]);
+  end;
+end;
+
+procedure TReadResult.addResultPoints(const newPoints: TArray<IResultPoint>);
+begin
+  FResultPoints := FResultPoints + newPoints;
+end;
+
+/// <summary>
+/// Returns a <see cref="System.String"/> that represents this instance.
+/// </summary>
+/// <returns>
+/// A <see cref="System.String"/> that represents this instance.
+/// </returns>
+function TReadResult.ToString(): String;
+begin
+  if (text = '') then
+    Result := '[' + IntToStr(Length(rawBytes)) + ' bytes]'
+  else
+    Result := text;
+end;
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.Reader.pas

@@ -0,0 +1,71 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Authors: Sean Owen and dswitkin@google.com (Daniel Switkin)
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.Reader;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+  ZXing.BinaryBitmap,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType;
+
+type
+  /// <summary>
+  /// Implementations of this interface can decode an image of a barcode in some format into
+  /// the String it encodes. For example, <see cref="ZXing.QrCode.QRCodeReader" /> can
+  /// decode a QR code. The decoder may optionally receive hints from the caller which may help
+  /// it decode more quickly or accurately.
+  ///
+  /// See <see cref="MultiFormatReader" />, which attempts to determine what barcode
+  /// format is present within the image as well, and then decodes it accordingly.
+  /// </summary>
+  IReader = interface
+    /// <summary>
+    /// Locates and decodes a barcode in some format within an image.
+    /// </summary>
+    /// <param name="image">image of barcode to decode</param>
+    /// <returns>String which the barcode encodes</returns>
+    function decode(const image: TBinaryBitmap): TReadResult; overload;
+
+    /// <summary> Locates and decodes a barcode in some format within an image. This method also accepts
+    /// hints, each possibly associated to some data, which may help the implementation decode.
+    /// </summary>
+    /// <param name="image">image of barcode to decode</param>
+    /// <param name="hints">passed as a <see cref="IDictionary{TKey, TValue}" /> from <see cref="DecodeHintType" />
+    /// to arbitrary data. The
+    /// meaning of the data depends upon the hint type. The implementation may or may not do
+    /// anything with these hints.
+    /// </param>
+    /// <returns>String which the barcode encodes</returns>
+    function decode(const image: TBinaryBitmap;
+      hints: TDictionary<TDecodeHintType, TObject>): TReadResult; overload;
+
+    /// <summary>
+    /// Resets any internal state the implementation has after a decode, to prepare it
+    /// for reuse.
+    /// </summary>
+    procedure Reset();
+  end;
+
+implementation
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.ResultMetadataType.pas

@@ -0,0 +1,108 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+
+unit ZXing.ResultMetadataType;
+
+interface
+
+type
+  /// <summary>
+  /// Represents some type of metadata about the result of the decoding that the decoder
+  /// wishes to communicate back to the caller.
+  /// </summary>
+  /// <author>Sean Owen</author>
+  TResultMetadataType = (
+    /// <summary>
+    /// Unspecified, application-specific metadata. Maps to an unspecified {@link Object}.
+    /// </summary>
+    OTHER,
+
+    /// <summary>
+    /// Denotes the likely approximate orientation of the barcode in the image. This value
+    /// is given as degrees rotated clockwise from the normal, upright orientation.
+    /// For example a 1D barcode which was found by reading top-to-bottom would be
+    /// said to have orientation "90". This key maps to an {@link Integer} whose
+    /// value is in the range [0,360).
+    /// </summary>
+    ORIENTATION,
+
+    /// <summary>
+    /// <p>2D barcode formats typically encode text, but allow for a sort of 'byte mode'
+    /// which is sometimes used to encode binary data. While {@link Result} makes available
+    /// the complete raw bytes in the barcode for these formats, it does not offer the bytes
+    /// from the byte segments alone.</p>
+    /// <p>This maps to a {@link java.util.List} of byte arrays corresponding to the
+    /// raw bytes in the byte segments in the barcode, in order.</p>
+    /// </summary>
+    BYTE_SEGMENTS,
+
+    /// <summary>
+    /// Error correction level used, if applicable. The value type depends on the
+    /// format, but is typically a String.
+    /// </summary>
+    ERROR_CORRECTION_LEVEL,
+
+    /// <summary>
+    /// For some periodicals, indicates the issue number as an {@link Integer}.
+    /// </summary>
+    ISSUE_NUMBER,
+
+    /// <summary>
+    /// For some products, indicates the suggested retail price in the barcode as a
+    /// formatted {@link String}.
+    /// </summary>
+    SUGGESTED_PRICE,
+
+    /// <summary>
+    /// For some products, the possible country of manufacture as a {@link String} denoting the
+    /// ISO country code. Some map to multiple possible countries, like "US/CA".
+    /// </summary>
+    POSSIBLE_COUNTRY,
+
+    /// <summary>
+    /// For some products, the extension text
+    /// </summary>
+    UPC_EAN_EXTENSION,
+
+    /// <summary>
+    /// If the code format supports structured append and
+    /// the current scanned code is part of one then the
+    /// sequence number is given with it.
+    /// </summary>
+    STRUCTURED_APPEND_SEQUENCE,
+
+    /// <summary>
+    /// If the code format supports structured append and
+    /// the current scanned code is part of one then the
+    /// parity is given with it.
+    /// </summary>
+    STRUCTURED_APPEND_PARITY,
+
+    /// <summary>
+    /// PDF417-specific metadata
+    /// </summary>
+    PDF417_EXTRA_METADATA,
+
+    /// <summary>
+    /// Aztec-specific metadata
+    /// </summary>
+    AZTEC_EXTRA_METADATA);
+
+implementation
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.ResultPoint.pas

@@ -0,0 +1,206 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: Sean Owen
+  * Delphi Implementation by E. Spelt and K. Gossens
+}
+
+unit ZXing.ResultPoint;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// To mimic "garbage collection" (or ARC) with old-gen compilers we have to use
+  /// interfaces. IResultPoint is the interface that maps TResultPoint which is now
+  /// implemented as a TInterfacedObject descendant which supports automatic deallocation
+  /// based on reference counting of interface variables.
+  /// See ZXing.ResultPointImplementation to see the actual implementation of this interface.
+  /// since we are using automatic reference counting, we don't need the Clone method any more.
+  /// </summary>
+
+  IResultPoint = interface
+     ['{1E60EDAB-0387-440C-9D8E-4E0CC772C820}']
+    // property accessors, for interfaces, MUST be functions or procedures (interfaces cannot contain data)
+    procedure SetX(const AValue: Single);
+    procedure SetY(const AValue: Single);
+    function GetX: Single;
+    function GetY: Single;
+
+    function Equals(other: TObject): Boolean;
+    function GetHashCode(): Integer;
+    function ToString(): String;
+
+    property x: Single read GetX write SetX;
+    property y: Single read GetY write SetY;
+  end;
+
+  /// <summary>
+  /// in order to implement TResultPoint as an interface all static methods
+  /// have been moved in this static class.
+  /// this class contains also the CreateResultPoint method that must be used
+  /// in place of the actual class constructor
+  /// </summary>
+  TResultPointHelpers = class
+    protected
+       /// <summary>
+       /// Returns the z component of the cross product between vectors BC and BA.
+       /// </summary>
+       class function crossProductZ(const pointA, pointB, pointC: IResultPoint): Single; static;
+    public
+       /// <summary>
+       /// Initializes a new instance of <see cref="TResultPoint"/> and returns
+       /// its <see cref="IResultPoint"/> interface
+       /// </summary>
+       class function CreateResultPoint:IResultPoint; overload;
+       /// <summary>
+       /// Initializes a new instance of  <see cref="TResultPoint"/> and returns
+       /// its <see cref="IResultPoint"/> interface
+       /// </summary>
+       /// <param name="x">The x.</param>
+       /// <param name="y">The y.</param>
+       class function CreateResultPoint(const pX, pY: Single):IResultPoint; overload;
+       /// <summary>
+       /// Orders an array of three ResultPoints in an order [A,B,C] such that AB is less than AC and
+       /// BC is less than AC and the angle between BC and BA is less than 180 degrees.
+       /// </summary>
+       /// <param name="patterns">array of three <see cref="IResultPoint" /> to order</param>
+       class procedure orderBestPatterns(const patterns : TArray<IResultPoint>); static;
+       /// <summary>
+       /// calculates the distance between two points
+       /// </summary>
+       /// <param name="pattern1">first pattern</param>
+       /// <param name="pattern2">second pattern</param>
+       /// <returns>
+       /// distance between two points
+       /// </returns>
+       class function distance(const pattern1, pattern2: IResultPoint) : Single; static;
+  end;
+
+
+
+  /// <summary> Callback which is invoked when a possible result point (significant
+  /// point in the barcode image such as a corner) is found.
+  ///
+  /// </summary>
+  /// <seealso cref="TDecodeHintType.NEED_RESULT_POINT_CALLBACK">
+  /// </seealso>
+  TResultPointCallback = procedure(const point: IResultPoint) of object;
+
+  TResultPointEventObject = class(TObject)
+  private
+    FResultPointCallback: TResultPointCallback;
+  public
+    constructor Create(const AEvent: TResultPointCallback);
+
+    property Event: TResultPointCallback read FResultPointCallback;
+  end;
+
+implementation
+uses ZXing.ResultPointImplementation;
+
+class function TResultPointHelpers.CreateResultPoint:IResultPoint;
+begin
+   result := ZXing.ResultPointImplementation.NewResultPoint;
+end;
+
+class function TResultPointHelpers.CreateResultPoint(const pX, pY: Single):IResultPoint;
+begin
+   result := ZXing.ResultPointImplementation.NewResultPoint(px,py);
+end;
+
+
+class function TResultPointHelpers.crossProductZ(const pointA, pointB,
+  pointC: IResultPoint): Single;
+var
+  bX, bY: Single;
+begin
+  bX := pointB.x;
+  bY := pointB.y;
+  Result := ((pointC.x - bX) * (pointA.y - bY)) -
+    ((pointC.y - bY) * (pointA.x - bX));
+end;
+
+
+class function TResultPointHelpers.distance(const pattern1,
+  pattern2: IResultPoint): Single;
+begin
+  Result := TMathUtils.distance(pattern1.x, pattern1.y, pattern2.x, pattern2.y);
+end;
+
+
+class procedure TResultPointHelpers.orderBestPatterns(const patterns
+  : TArray<IResultPoint>);
+var
+  zeroOneDistance, oneTwoDistance, zeroTwoDistance: Single;
+  pointA, pointB, pointC, temp: IResultPoint;
+begin
+  // Find distances between pattern centers
+  zeroOneDistance := distance(patterns[0], patterns[1]);
+  oneTwoDistance := distance(patterns[1], patterns[2]);
+  zeroTwoDistance := distance(patterns[0], patterns[2]);
+
+  // Assume one closest to other two is B; A and C will just be guesses at first
+  if ((oneTwoDistance >= zeroOneDistance) and
+    (oneTwoDistance >= zeroTwoDistance)) then
+  begin
+    pointB := patterns[0];
+    pointA := patterns[1];
+    pointC := patterns[2];
+  end
+  else if ((zeroTwoDistance >= oneTwoDistance) and
+    (zeroTwoDistance >= zeroOneDistance)) then
+  begin
+    pointB := patterns[1];
+    pointA := patterns[0];
+    pointC := patterns[2];
+  end
+  else
+  begin
+    pointB := patterns[2];
+    pointA := patterns[0];
+    pointC := patterns[1];
+  end;
+
+  // Use cross product to figure out whether A and C are correct or flipped.
+  // This asks whether BC x BA has a positive z component, which is the arrangement
+  // we want for A, B, C. If it's negative, then we've got it flipped around and
+  // should swap A and C.
+  if (crossProductZ(pointA, pointB, pointC) < 0) then
+  begin
+    temp := pointA;
+    pointA := pointC;
+    pointC := temp;
+  end;
+
+  patterns[0] := pointA;
+  patterns[1] := pointB;
+  patterns[2] := pointC;
+end;
+
+
+{ TResultPointEventObject }
+
+constructor TResultPointEventObject.Create(const AEvent: TResultPointCallback);
+begin
+  Self.FResultPointCallback := AEvent;
+end;
+
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.ResultPointImplementation.pas

@@ -0,0 +1,168 @@
+unit ZXing.ResultPointImplementation;
+
+interface
+uses system.SysUtils, 
+     ZXing.ResultPoint;
+
+type
+  /// <summary>
+  /// Encapsulates a point of interest in an image containing a barcode. Typically, this
+  /// would be the location of a finder pattern or the corner of the barcode, for example.
+  /// this class is meant to be used only indirectly, via the IResultPoint reference-counted interface
+  // it implements. It is exposed in the interface section just to allow the declaration of its derived classes
+  /// </summary>
+  TResultPoint = class(TInterfacedObject,IResultPoint)
+  private type
+    TSingleArray = array [0 .. Pred(SizeOf(Single))] of Byte;
+  var
+    Fx, Fy: Single;
+    bytesX, bytesY: TSingleArray;
+    FToString: String;
+    procedure SetX(const AValue: Single);
+    procedure SetY(const AValue: Single);
+    function GetX: Single;
+    function GetY: Single;
+  public
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TResultPoint"/> class.
+    /// </summary>
+    constructor Create; overload;
+    /// <summary>
+    /// Initializes a new instance of the <see cref="TResultPoint"/> class.
+    /// </summary>
+    /// <param name="x">The x.</param>
+    /// <param name="y">The y.</param>
+    constructor Create(const pX, pY: Single); overload;
+    destructor Destroy; override;
+
+    /// <summary>
+    /// Determines whether the specified <see cref="System.TObject"/> is equal to this instance.
+    /// </summary>
+    /// <param name="other">The <see cref="System.TObject"/> to compare with this instance.</param>
+    /// <returns>
+    /// <c>true</c> if the specified <see cref="System.TObject"/> is equal to this instance; otherwise, <c>false</c>.
+    /// </returns>
+    function Equals(other: TObject): Boolean; override;
+    /// <summary>
+    /// Returns a hash code for this instance.
+    /// </summary>
+    /// <returns>
+    /// A hash code for this instance, suitable for use in hashing algorithms and data structures like a hash table.
+    /// </returns>
+    function GetHashCode(): Integer; override;
+    /// <summary>
+    /// Returns a <see cref="System.String"/> that represents this instance.
+    /// </summary>
+    /// <returns>
+    /// A <see cref="System.String"/> that represents this instance.
+    /// </returns>
+    function ToString(): String; override;
+
+    property x: Single read GetX write SetX;
+    property y: Single read GetY write SetY;
+  end;
+
+// these are the helping functions that actually create a new instance.
+// The actual constructor cannot be called outside of this unit
+function NewResultPoint:IResultPoint; overload;
+function NewResultPoint(const pX, pY: Single):IResultPoint; overload;
+
+
+implementation
+
+function NewResultPoint:IResultPoint;
+begin
+  result := TResultPoint.Create;
+end;
+
+function NewResultPoint(const pX, pY: Single):IResultPoint;
+begin
+   result := TResultPoint.Create(px,py);
+end;
+
+
+{ TResultPoint }
+
+
+constructor TResultPoint.Create;
+begin
+  inherited;
+end;
+
+constructor TResultPoint.Create(const pX, pY: Single);
+begin
+  inherited Create;
+
+  Fx := pX;
+  Fy := pY;
+  bytesX := TSingleArray(pX);
+  bytesY := TSingleArray(pY);
+end;
+
+destructor TResultPoint.Destroy;
+var
+  n: Single;
+begin
+  n := 0;
+  bytesX := TSingleArray(n);
+  bytesY := TSingleArray(n);
+  inherited;
+end;
+
+procedure TResultPoint.SetX(const AValue: Single);
+begin
+  if (AValue <> Fx) then
+  begin
+    Fx := AValue;
+    bytesX := TSingleArray(Fx);
+  end;
+end;
+
+procedure TResultPoint.SetY(const AValue: Single);
+begin
+  if (AValue <> Fy) then
+  begin
+    Fy := AValue;
+    bytesY := TSingleArray(Fy);
+  end;
+end;
+
+function TResultPoint.GetX: Single;
+begin
+   result := Fx;
+end;
+
+function TResultPoint.GetY: Single;
+begin
+   result := Fy;
+end;
+
+function TResultPoint.Equals(other: TObject): Boolean;
+var
+  otherPoint: TResultPoint;
+begin
+  otherPoint := other as TResultPoint;
+  if (otherPoint = nil) then
+    Result := false
+  else
+    Result := ((otherPoint.x = Fx) and (otherPoint.y = Fy));
+end;
+
+function TResultPoint.GetHashCode: Integer;
+begin
+  Result := 31 * ((bytesX[0] shl 24) + (bytesX[1] shl 16) + (bytesX[2] shl 8) +
+    bytesX[3]) + (bytesY[0] shl 24) + (bytesY[1] shl 16) + (bytesY[2] shl 8) +
+    bytesY[3];
+end;
+
+
+function TResultPoint.ToString: String;
+begin
+  if (FToString = '') then
+    FToString := Format('(%g),(%g)', [Fx, Fy]);
+  Result := FToString;
+end;
+
+
+
+end.

android-client/ThirdParty/ZXing/Common/ZXing.StringUtils.pas

@@ -0,0 +1,229 @@
+unit ZXing.StringUtils;
+
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+interface
+
+uses SysUtils, Generics.Collections, ZXing.DecodeHintType;
+
+type
+
+  TStringUtils = class abstract
+  const
+    UTF8 = 'UTF-8';
+    EUC_JP = 'EUC-JP';
+    ISO88591 = 'ISO-8859-1';
+    class procedure ClassInit;
+    class var ASSUME_SHIFT_JIS: boolean;
+    class var PLATFORM_DEFAULT_ENCODING: string;
+  public
+    class var GB2312: string;
+    class var SHIFT_JIS: string;
+    class function guessEncoding(bytes: TArray<Byte>;
+      hints: TDictionary<TDecodeHintType, TObject>): string; static;
+
+  end;
+
+implementation
+
+class procedure TStringUtils.ClassInit;
+begin
+  PLATFORM_DEFAULT_ENCODING := 'ISO-8859-1'; // 'ISO 8859-15';
+  SHIFT_JIS := 'SJIS';
+  GB2312 := 'GB2312';
+
+  ASSUME_SHIFT_JIS := (string.Compare(TStringUtils.SHIFT_JIS,
+    TStringUtils.PLATFORM_DEFAULT_ENCODING, true) = 0) or
+    (string.Compare('EUC-JP', TStringUtils.PLATFORM_DEFAULT_ENCODING,
+    true) = 0);
+
+end;
+
+class function TStringUtils.guessEncoding(bytes: TArray<Byte>;
+  hints: TDictionary<TDecodeHintType, TObject>): string;
+
+var
+  characterSet: string;
+  utf8BytesLeft, utf2BytesChars, utf3BytesChars, utf4BytesChars, sjisBytesLeft,
+    sjisKatakanaChars, sjisCurKatakanaWordLength, sjisCurDoubleBytesWordLength,
+    sjisMaxKatakanaWordLength, sjisMaxDoubleBytesWordLength, isoHighOther, len,
+    i, value: Integer;
+  utf8bom, canBeISO88591, canBeShiftJIS, canBeUTF8: boolean;
+
+begin
+  if ((hints <> nil) and hints.ContainsKey(ZXing.DecodeHintType.CHARACTER_SET)) then
+  begin
+    characterSet := string(hints[ZXing.DecodeHintType.CHARACTER_SET]);
+    if (characterSet <> '') then
+    begin
+      Result := characterSet;
+      exit
+    end
+  end;
+
+  len := length(bytes);
+  canBeISO88591 := true;
+  canBeShiftJIS := true;
+  canBeUTF8 := true;
+  utf8BytesLeft := 0;
+  utf2BytesChars := 0;
+  utf3BytesChars := 0;
+  utf4BytesChars := 0;
+  sjisBytesLeft := 0;
+  sjisKatakanaChars := 0;
+  sjisCurKatakanaWordLength := 0;
+  sjisCurDoubleBytesWordLength := 0;
+  sjisMaxKatakanaWordLength := 0;
+  sjisMaxDoubleBytesWordLength := 0;
+  isoHighOther := 0;
+
+  utf8bom := ((((length(bytes) > 3) and (bytes[0] = $EF)) and (bytes[1] = $BB))
+    and (bytes[2] = $BF));
+
+  i := 0;
+  while (((i < len) and ((canBeISO88591 or canBeShiftJIS) or canBeUTF8))) do
+  begin
+    value := (bytes[i] and $FF);
+    if (canBeUTF8) then
+      if (utf8BytesLeft > 0) then
+        if ((value and $80) = 0) then
+          canBeUTF8 := false
+        else
+          dec(utf8BytesLeft)
+      else if ((value and $80) <> 0) then
+        if ((value and $40) = 0) then
+          canBeUTF8 := false
+        else
+        begin
+          inc(utf8BytesLeft);
+          if ((value and $20) = 0) then
+            inc(utf2BytesChars)
+          else
+          begin
+            inc(utf8BytesLeft);
+            if ((value and $10) = 0) then
+              inc(utf3BytesChars)
+            else
+            begin
+              inc(utf8BytesLeft);
+              if ((value and 8) = 0) then
+                inc(utf4BytesChars)
+              else
+                canBeUTF8 := false
+            end
+          end
+        end;
+
+    if (canBeISO88591) then
+      if ((value > $7F) and (value < 160)) then
+        canBeISO88591 := false
+      else if ((value > $9F) and (((value < $C0) or (value = $D7)) or
+        (value = $F7))) then
+        inc(isoHighOther);
+
+    if (canBeShiftJIS) then
+      if (sjisBytesLeft > 0) then
+        if (((value < $40) or (value = $7F)) or (value > $FC)) then
+          canBeShiftJIS := false
+        else
+          dec(sjisBytesLeft)
+      else if (((value = $80) or (value = 160)) or (value > $EF)) then
+        canBeShiftJIS := false
+      else if ((value > 160) and (value < $E0)) then
+      begin
+        inc(sjisKatakanaChars);
+        sjisCurDoubleBytesWordLength := 0;
+        inc(sjisCurKatakanaWordLength);
+        if (sjisCurKatakanaWordLength > sjisMaxKatakanaWordLength) then
+          sjisMaxKatakanaWordLength := sjisCurKatakanaWordLength
+      end
+      else if (value > $7F) then
+      begin
+        inc(sjisBytesLeft);
+        sjisCurKatakanaWordLength := 0;
+        inc(sjisCurDoubleBytesWordLength);
+        if (sjisCurDoubleBytesWordLength > sjisMaxDoubleBytesWordLength) then
+          sjisMaxDoubleBytesWordLength := sjisCurDoubleBytesWordLength
+      end
+      else
+      begin
+        sjisCurKatakanaWordLength := 0;
+        sjisCurDoubleBytesWordLength := 0
+      end;
+    inc(i)
+  end;
+
+  if (canBeUTF8 and (utf8BytesLeft > 0)) then
+    canBeUTF8 := false;
+
+  if (canBeShiftJIS and (sjisBytesLeft > 0)) then
+    canBeShiftJIS := false;
+
+  if (canBeUTF8 and (utf8bom or (((utf2BytesChars + utf3BytesChars) +
+    utf4BytesChars) > 0))) then
+  begin
+    Result := 'UTF-8';
+    exit
+  end;
+
+  if (canBeShiftJIS and ((TStringUtils.ASSUME_SHIFT_JIS or
+    (sjisMaxKatakanaWordLength >= 3)) or (sjisMaxDoubleBytesWordLength >= 3)))
+  then
+  begin
+    Result := TStringUtils.SHIFT_JIS;
+    exit
+  end;
+
+  if (canBeISO88591 and canBeShiftJIS) then
+  begin
+
+    if (((sjisMaxKatakanaWordLength = 2) and (sjisKatakanaChars = 2)) or
+      ((isoHighOther * 10) >= len)) then
+      Result := TStringUtils.SHIFT_JIS
+    else
+      Result := 'ISO-8859-1';
+    exit
+  end;
+
+  if (canBeISO88591) then
+  begin
+    Result := 'ISO-8859-1';
+    exit
+  end;
+
+  if (canBeShiftJIS) then
+  begin
+    Result := TStringUtils.SHIFT_JIS;
+    exit
+  end;
+
+  if (canBeUTF8) then
+  begin
+    Result := 'UTF-8';
+    exit
+  end;
+
+  Result := TStringUtils.PLATFORM_DEFAULT_ENCODING;
+
+end;
+
+Initialization
+
+TStringUtils.ClassInit;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.BaseLuminanceSource.pas

@@ -0,0 +1,254 @@
+{
+  * Copyright 2007 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: dswitkin@google.com (Daniel Switkin)
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.BaseLuminanceSource;
+
+interface
+uses
+  System.SysUtils,
+  System.UITypes,
+{$IFDEF FRAMEWORK_FMX}
+  FMX.Graphics,
+{$ENDIF}
+{$IFDEF FRAMEWORK_VCL}
+  VCL.Graphics,
+{$ENDIF}
+  ZXing.LuminanceSource,
+  ZXing.InvertedLuminanceSource;
+
+type
+  /// <summary>
+  /// The base class for luminance sources which supports
+  /// cropping and rotating based upon the luminance values.
+  /// </summary>
+  TBaseLuminanceSource = class abstract (TLuminanceSource)
+  protected
+    luminances: TArray<Byte>;
+
+    const
+      RChannelWeight : Integer = 19562;
+      GChannelWeight : Integer = 38550;
+      BChannelWeight : Integer = 7424;
+      ChannelWeight  : Integer = 16;
+	  
+    function CreateLuminanceSource(const newLuminances: TArray<Byte>;
+      const width, height: Integer): TLuminanceSource; virtual; abstract;
+  public
+    
+    // added the "reintroduce" keyword to shut off the "method hides another method with the same name in the base class"
+    constructor Create(const width, height: Integer);  reintroduce; overload; 
+    constructor Create(const luminanceArray: TArray<Byte>; const width, height: Integer);  reintroduce; overload;
+
+    function getRow(const y: Integer; row: TArray<Byte>): TArray<Byte>; override;
+    function rotateCounterClockwise(): TLuminanceSource; override;
+    function rotateCounterClockwise45(): TLuminanceSource; override;
+    function crop(const left, top,
+      width, height: Integer): TLuminanceSource; override;
+
+    function Matrix: TArray<Byte>; override;
+    function RotateSupported: Boolean; override;
+    function InversionSupported: Boolean; override;
+    function CropSupported: Boolean; override;
+    function invert(): TLuminanceSource; override;
+  end;
+
+implementation
+
+{ TBaseLuminanceSource }
+
+constructor TBaseLuminanceSource.Create(const width, height: Integer);
+begin
+  inherited Create(width, height);
+  
+  luminances := TArray<Byte>.Create();
+  SetLength(luminances, (width * height));
+end;
+
+/// <summary>
+/// Initializes a new instance of the <see cref="BaseLuminanceSource"/> class.
+/// </summary>
+/// <param name="luminanceArray">The luminance array.</param>
+/// <param name="width">The width.</param>
+/// <param name="height">The height.</param>
+constructor TBaseLuminanceSource.Create(const luminanceArray: TArray<Byte>; 
+  const width, height: Integer);
+begin
+  Self.Create(width, height);
+  Copy(luminanceArray, 0, Length(luminances));
+end;
+
+/// <summary>
+/// Fetches one row of luminance data from the underlying platform's bitmap. Values range from
+/// 0 (black) to 255 (white). It is preferable for implementations of this method
+/// to only fetch this row rather than the whole image, since no 2D Readers may be installed and
+/// getMatrix() may never be called.
+/// </summary>
+/// <param name="y">The row to fetch, 0 &lt;= y &lt; Height.</param>
+/// <param name="row">An optional preallocated array. If null or too small, it will be ignored.
+/// Always use the returned object, and ignore the .length of the array.</param>
+/// <returns>
+/// An array containing the luminance data.
+/// </returns>
+function TBaseLuminanceSource.getRow(const y: Integer; 
+  row: TArray<Byte>): TArray<Byte>;
+var
+  i, width: Integer;
+begin
+  width := Self.Width;
+  if ((row = nil) or (Length(row) < width)) then
+  begin
+    row := nil;
+    row := TArray<Byte>.Create();
+    SetLength(row, width);
+  end;
+
+  for i := 0 to Pred(width) do
+    row[i] := luminances[y * width + i];
+
+  Result := row;  
+end;
+
+function TBaseLuminanceSource.Matrix: TArray<Byte>;
+begin
+  Result := luminances;
+end;
+
+/// <summary>
+/// Returns a new object with rotated image data by 90 degrees counterclockwise.
+/// Only callable if {@link #isRotateSupported()} is true.
+/// </summary>
+/// <returns>
+/// A rotated version of this object.
+/// </returns>
+function TBaseLuminanceSource.rotateCounterClockwise(): TLuminanceSource;
+var
+  rotatedLuminances : TArray<Byte>;
+  newWidth,
+  newHeight : Integer;
+  localLuminances : TArray<Byte>;
+  yold, ynew,
+  xold, xnew : Integer;
+begin
+  rotatedLuminances := TArray<Byte>.Create();
+  SetLength(rotatedLuminances, (Width * Height));
+
+  newWidth := Height;
+  newHeight := Width;
+  localLuminances := Matrix;
+  for yold := 0 to Pred(Height) do
+  begin
+     for xold := 0 to Pred(Width) do
+	 begin
+     ynew := newHeight - xold - 1;
+	   xnew := yold;
+     rotatedLuminances[ynew * newWidth + xnew] := localLuminances[yold * Width + xold];
+   end;
+  end;
+  Result := CreateLuminanceSource(rotatedLuminances, newWidth, newHeight);
+end;
+
+/// <summary>
+/// TODO: not implemented yet
+/// </summary>
+/// <returns>
+/// A rotated version of this object.
+/// </returns>
+function TBaseLuminanceSource.rotateCounterClockwise45(): TLuminanceSource;
+begin
+  // TODO: implement a good 45 degrees rotation without lost of information
+  Result := inherited rotateCounterClockwise45();
+end;
+
+/// <summary>
+/// </summary>
+/// <returns> Whether this subclass supports counter-clockwise rotation.</returns>
+function TBaseLuminanceSource.RotateSupported: Boolean;
+begin
+  Result := true;
+end;
+
+/// <summary>
+/// Returns a new object with cropped image data. Implementations may keep a reference to the
+/// original data rather than a copy. Only callable if CropSupported is true.
+/// </summary>
+/// <param name="left">The left coordinate, 0 &lt;= left &lt; Width.</param>
+/// <param name="top">The top coordinate, 0 &lt;= top &lt;= Height.</param>
+/// <param name="width">The width of the rectangle to crop.</param>
+/// <param name="height">The height of the rectangle to crop.</param>
+/// <returns>
+/// A cropped version of this object.
+/// </returns>
+function TBaseLuminanceSource.Crop(const left, top,
+  width, height: Integer): TLuminanceSource;
+var
+  croppedLuminances,
+  oldLuminances : TArray<Byte>;
+  oldWidth,
+  oldRightBound,
+  oldBottomBound : Integer;
+  yold, ynew,
+  xold, xnew : Integer;
+begin
+  if ((left + width > Self.Width) or (top + height > Self.Height))
+  then
+     raise EArgumentException.Create('Crop rectangle does not fit within image data.');
+
+  croppedLuminances := TArray<Byte>.Create();
+  SetLength(croppedLuminances, (width * height));
+  oldLuminances := Self.Matrix;
+  oldWidth := Self.Width;
+  oldRightBound := left + width;
+  oldBottomBound := top + height;
+  ynew := 0;
+  for yold := top to Pred(oldBottomBound) do
+  begin
+    xnew := 0;
+    for xold := left to Pred(oldRightBound) do
+      croppedLuminances[ynew * width + xnew] := oldLuminances[yold * oldWidth + xold];
+    Inc(ynew);
+  end;
+
+  Result := CreateLuminanceSource(croppedLuminances, width, height);
+end;
+
+/// <summary>
+/// </summary>
+/// <returns> Whether this subclass supports cropping.</returns>
+function TBaseLuminanceSource.CropSupported: Boolean;
+begin
+  Result := true;
+end;
+
+/// <summary>
+/// </summary>
+/// <returns>Whether this subclass supports invertion.</returns>
+function TBaseLuminanceSource.InversionSupported: Boolean;
+begin
+  Result := true;
+end;
+
+ /// <summary>
+/// Inverts the luminance values (newValue = 255 - oldValue)
+/// </summary>
+function TBaseLuminanceSource.invert(): TLuminanceSource;
+begin
+  Result := TInvertedLuminanceSource.Create(Self);
+end;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.Binarizer.pas

@@ -0,0 +1,121 @@
+unit ZXing.Binarizer;
+{
+  * Copyright 2009 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * 2015-3 Adapted for Delphi/Object Pascal FireMonkey XE7 mobile by E.Spelt
+}
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.LuminanceSource,
+  ZXing.Common.BitArray,
+  ZXing.Common.BitMatrix;
+
+type
+
+  /// <summary> This class hierarchy provides a set of methods to convert luminance data to 1 bit data.
+  /// It allows the algorithm to vary polymorphically, for example allowing a very expensive
+  /// thresholding technique for servers and a fast one for mobile. It also permits the implementation
+  /// to vary, e.g. a JNI version for Android and a Java fallback version for other platforms.
+  ///
+  /// <author>dswitkin@google.com (Daniel Switkin)</author>
+  /// </summary>
+  TBinarizer = class
+  private
+    FSource: TLuminanceSource;
+    function GetWidth: Integer;
+    function GetHeight: Integer;
+  protected
+    /// <summary>
+    /// Initializes a new instance of the <see cref="Binarizer"/> class.
+    /// </summary>
+    /// <param name="source">The source.</param>
+    constructor Create(source: TLuminanceSource);
+
+    /// <summary> Converts one row of luminance data to 1 bit data. May actually do the conversion, or return
+    /// cached data. Callers should assume this method is expensive and call it as seldom as possible.
+    /// This method is intended for decoding 1D barcodes and may choose to apply sharpening.
+    /// For callers which only examine one row of pixels at a time, the same BitArray should be reused
+    /// and passed in with each call for performance. However it is legal to keep more than one row
+    /// at a time if needed.
+    /// </summary>
+    /// <param name="y">The row to fetch, which must be in [0, bitmap height)</param>
+    /// <param name="row">An optional preallocated array. If null or too small, it will be ignored.
+    /// If used, the Binarizer will call BitArray.clear(). Always use the returned object.
+    /// </param>
+    /// <returns> The array of bits for this row (true means black).</returns>
+  public
+    function LuminanceSource(): TLuminanceSource;
+    function GetBlackRow(y: Integer; row: IBitArray): IBitArray;
+      virtual; abstract;
+
+    function BlackMatrix: TBitMatrix; virtual; abstract;
+    destructor Destroy();override;
+
+    /// <summary> Creates a new object with the same type as this Binarizer implementation, but with pristine
+    /// state. This is needed because Binarizer implementations may be stateful, e.g. keeping a cache
+    /// of 1 bit data. See Effective Java for why we can't use Java's clone() method.
+    /// </summary>
+    /// <param name="source">The LuminanceSource this Binarizer will operate on.</param>
+    /// <returns> A new concrete Binarizer implementation object.</returns>
+    function createBinarizer(source: TLuminanceSource): TBinarizer;
+      virtual; abstract;
+
+    property Width: Integer read GetWidth;
+    property Height: Integer read GetHeight;
+
+
+
+  end;
+
+implementation
+
+{ TBinarizer }
+
+constructor TBinarizer.Create(source: TLuminanceSource);
+begin
+
+  if (source = nil) then
+  begin
+    raise EArgumentException.Create('Source must be non-null.');
+  end;
+
+  Self.FSource := source;
+
+end;
+
+destructor TBinarizer.Destroy;
+begin
+  inherited;
+end;
+
+function TBinarizer.GetHeight: Integer;
+begin
+  Result:= FSource.Height;
+end;
+
+function TBinarizer.GetWidth: Integer;
+begin
+  result := FSource.Width;
+end;
+
+function TBinarizer.LuminanceSource: TLuminanceSource;
+begin
+  result := Self.FSource;
+end;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.BinaryBitmap.pas

@@ -0,0 +1,124 @@
+{
+  * Copyright 2008 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Implemented by E. Spelt for Delphi
+}
+
+unit ZXing.BinaryBitmap;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.Binarizer,
+  ZXing.LuminanceSource,
+  ZXing.Common.BitArray,
+  ZXing.Common.BitMatrix;
+
+type
+  TBinaryBitmap = class
+  private
+    Binarizer: TBinarizer;
+    Matrix: TBitMatrix;
+    function GetWidth: Integer;
+    function GetHeight: Integer;
+    function GetBlackMatrix: TBitMatrix;
+  public
+    constructor Create(Binarizer: TBinarizer);
+    destructor Destroy(); override;
+    /// <summary>
+    /// Converts one row of luminance data to 1 bit data. May actually do the conversion, or return
+    /// cached data. Callers should assume this method is expensive and call it as seldom as possible.
+    /// This method is intended for decoding 1D barcodes and may choose to apply sharpening.
+    /// </summary>
+    /// <param name="y">The row to fetch, which must be in [0, bitmap height).</param>
+    /// <param name="row">An optional preallocated array. If null or too small, it will be ignored.
+    /// If used, the Binarizer will call BitArray.clear(). Always use the returned object.
+    /// </param>
+    /// <returns> The array of bits for this row (true means black).</returns>
+    function getBlackRow(y: Integer; row: IBitArray): IBitArray;
+    function RotateSupported: Boolean;
+    function rotateCounterClockwise(): TBinaryBitmap;
+
+    property Width: Integer read GetWidth;
+    property Height: Integer read GetHeight;
+    property BlackMatrix: TBitMatrix read GetBlackMatrix;
+  end;
+
+implementation
+
+{ TBinaryBitmap }
+
+constructor TBinaryBitmap.Create(Binarizer: TBinarizer);
+begin
+
+  if (Binarizer = nil) then
+  begin
+    raise EArgumentException.Create('Binarizer must be non-null.');
+  end;
+
+  Self.Binarizer := Binarizer;
+
+end;
+
+destructor TBinaryBitmap.Destroy;
+begin
+  if Assigned(Matrix) then
+    FreeAndNil(Matrix);
+
+  //FreeAndNil(Binarizer);
+  inherited;
+end;
+
+function TBinaryBitmap.GetBlackMatrix: TBitMatrix;
+begin
+  if (Matrix = nil) then
+  begin
+    Matrix := Binarizer.BlackMatrix();
+  end;
+
+  result := Matrix;
+
+end;
+
+function TBinaryBitmap.getBlackRow(y: Integer; row: IBitArray): IBitArray;
+begin
+  result := Binarizer.getBlackRow(y, row);
+end;
+
+function TBinaryBitmap.GetHeight: Integer;
+begin
+  result := Binarizer.Height;
+end;
+
+function TBinaryBitmap.GetWidth: Integer;
+begin
+  result := Binarizer.Width;
+end;
+
+function TBinaryBitmap.rotateCounterClockwise: TBinaryBitmap;
+var
+  newSource: TLuminanceSource;
+begin
+  newSource := Binarizer.LuminanceSource.rotateCounterClockwise();
+  result := TBinaryBitmap.Create(Binarizer.createBinarizer(newSource));
+end;
+
+function TBinaryBitmap.RotateSupported: Boolean;
+begin
+  result := Binarizer.LuminanceSource.RotateSupported();
+end;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.GlobalHistogramBinarizer.pas

@@ -0,0 +1,249 @@
+unit ZXing.GlobalHistogramBinarizer;
+{
+  * Copyright 2009 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * 2015-3 Adapted for Delphi/Object Pascal FireMonkey XE7 mobile by E.Spelt
+}
+
+interface
+
+uses 
+  SysUtils, 
+  ZXing.Binarizer,
+  ZXing.LuminanceSource,
+  ZXing.Common.BitArray, 
+  ZXing.Common.Detector.MathUtils;
+
+type
+  TGlobalHistogramBinarizer = class(TBinarizer)
+  private
+
+    class var LUMINANCE_BITS, LUMINANCE_SHIFT, LUMINANCE_BUCKETS: Integer;
+    EMPTY: TArray<Byte>;
+
+    luminances: TArray<Byte>;
+    buckets: TArray<Integer>;
+    procedure InitArrays(luminanceSize: Integer);
+    function estimateBlackPoint(buckets: TArray<Integer>;
+      var blackPoint: Integer): Boolean;
+    class procedure ClassInit; static;
+
+  public
+    constructor Create(source: TLuminanceSource);
+
+    // constructor GlobalHistogramBinarizer(source: TLuminanceSource);
+    function GetBlackRow(y: Integer; row: IBitArray): IBitArray; override;
+  end;
+
+implementation
+
+{ TGlobalHistogramBinarizer }
+
+class procedure TGlobalHistogramBinarizer.ClassInit();
+begin
+  LUMINANCE_BITS := 5;
+  LUMINANCE_SHIFT := 8 - LUMINANCE_BITS;
+  LUMINANCE_BUCKETS := 1 shl LUMINANCE_BITS;
+  EMPTY := TArray<Byte>.Create();
+  SetLength(EMPTY, 0);
+end;
+
+constructor TGlobalHistogramBinarizer.Create(source: TLuminanceSource);
+begin
+  inherited Create(source);
+  luminances := EMPTY;
+  buckets := TArray<Integer>.Create();
+  SetLength(self.buckets, LUMINANCE_BUCKETS);
+end;
+
+{
+  constructor TGlobalHistogramBinarizer.GlobalHistogramBinarizer
+  (source: TLuminanceSource);
+  begin
+  Inherited Create(source);
+
+
+
+  SetLength(luminances, 0);
+  SetLength(buckets, LUMINANCE_BUCKETS);
+  end;
+}
+
+function TGlobalHistogramBinarizer.GetBlackRow(y: Integer; row: IBitArray)
+  : IBitArray;
+var
+  localLuminances: TArray<Byte>;
+  localBuckets: TArray<Integer>;
+  i, w, blackPoint, x, pixel, left, right, center, luminance: Integer;
+begin
+  w := width;
+  if ((row = nil) or (row.Size < w)) then
+  begin
+    row := TBitArrayHelpers.CreateBitArray(w);
+  end
+  else
+  begin
+    row.Clear();
+  end;
+
+  InitArrays(w);
+  localLuminances := LuminanceSource.getRow(y, luminances);
+  localBuckets := buckets;
+
+  for x := 0 to w - 1 do
+  begin
+    pixel := localLuminances[x] and $FF;
+    i := TMathUtils.Asr(pixel, LUMINANCE_SHIFT);
+    localBuckets[i] := localBuckets[i] + 1;
+  end;
+
+  if (not estimateBlackPoint(localBuckets, blackPoint)) then
+  begin
+    result := nil;
+    exit;
+  end;
+
+  left := localLuminances[0] and $FF;
+  center := localLuminances[1] and $FF;
+
+  for x := 1 to w - 2 do
+  begin
+
+    right := localLuminances[x + 1] and $FF;
+    // A simple -1 4 -1 box filter with a weight of 2.
+
+    luminance := (center shl 2) - left - right;
+    luminance := TMathUtils.Asr(luminance, 1);
+    row[x] := (luminance < blackPoint);
+    left := center;
+    center := right;
+  end;
+
+  result := row;
+
+end;
+
+procedure TGlobalHistogramBinarizer.InitArrays(luminanceSize: Integer);
+var
+  x: Integer;
+begin
+
+  if (Length(luminances) < luminanceSize) then
+  begin
+    SetLength(luminances, luminanceSize);
+  end;
+
+  for x := 0 to LUMINANCE_BUCKETS - 1 do
+  begin
+    buckets[x] := 0;
+  end;
+
+end;
+
+function TGlobalHistogramBinarizer.estimateBlackPoint(buckets: TArray<Integer>;
+  var blackPoint: Integer): Boolean;
+
+var
+  x, numBuckets, maxBucketCount, firstPeak, firstPeakSize, secondPeak,
+    secondPeakScore, distanceToBiggest, score, temp, bestValley,
+    bestValleyScore, fromFirst: Integer;
+
+begin
+  blackPoint := 0;
+
+  // Find the tallest peak in the histogram.
+  numBuckets := Length(buckets);
+  maxBucketCount := 0;
+  firstPeak := 0;
+  firstPeakSize := 0;
+
+  for x := 0 to numBuckets - 1 do
+  begin
+
+    if (buckets[x] > firstPeakSize) then
+    begin
+      firstPeak := x;
+      firstPeakSize := buckets[x];
+    end;
+
+    if (buckets[x] > maxBucketCount) then
+    begin
+      maxBucketCount := buckets[x];
+    end;
+
+  end;
+
+  // Find the second-tallest peak which is somewhat far from the tallest peak.
+  secondPeak := 0;
+  secondPeakScore := 0;
+  for x := 0 to numBuckets - 1 do
+  begin
+    distanceToBiggest := x - firstPeak;
+    // Encourage more distant second peaks by multiplying by square of distance.
+    score := buckets[x] * distanceToBiggest * distanceToBiggest;
+    if (score > secondPeakScore) then
+    begin
+      secondPeak := x;
+      secondPeakScore := score;
+    end;
+  end;
+
+  // Make sure firstPeak corresponds to the black peak.
+  if (firstPeak > secondPeak) then
+  begin
+    temp := firstPeak;
+    firstPeak := secondPeak;
+    secondPeak := temp;
+  end;
+
+  // If there is too little contrast in the image to pick a meaningful black point, throw rather
+  // than waste time trying to decode the image, and risk false positives.
+  // TODO: It might be worth comparing the brightest and darkest pixels seen, rather than the
+  // two peaks, to determine the contrast.
+  if ((secondPeak - firstPeak) <= (TMathUtils.Asr(numBuckets, 4))) then
+  begin
+    result := false;
+    exit;
+  end;
+
+  // Find a valley between them that is low and closer to the white peak.
+  bestValley := secondPeak - 1;
+  bestValleyScore := -1;
+
+  x := secondPeak - 1;
+  while (x > firstPeak) do
+  begin
+    fromFirst := x - firstPeak;
+    score := fromFirst * fromFirst * (secondPeak - x) *
+      (maxBucketCount - buckets[x]);
+
+    if (score > bestValleyScore) then
+    begin
+      bestValley := x;
+      bestValleyScore := score;
+    end;
+
+    Dec(x);
+  end;
+
+  blackPoint := bestValley shl LUMINANCE_SHIFT;
+  result := true;
+end;
+
+Initialization
+
+TGlobalHistogramBinarizer.ClassInit();
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.HybridBinarizer.pas

@@ -0,0 +1,330 @@
+unit ZXing.HybridBinarizer;
+{
+  * Copyright 2009 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * 2015-3 Adapted for Delphi/Object Pascal FireMonkey XE7 mobile by E.Spelt
+}
+
+interface
+
+uses 
+  SysUtils, 
+  ZXing.GlobalHistogramBinarizer,
+  ZXing.LuminanceSource,
+  ZXing.Common.BitMatrix,
+  ZXing.binarizer,
+  ZXing.Common.Detector.MathUtils;
+
+/// <summary> This class implements a local thresholding algorithm, which while slower than the
+/// GlobalHistogramBinarizer, is fairly efficient for what it does. It is designed for
+/// high frequency images of barcodes with black data on white backgrounds. For this application,
+/// it does a much better job than a global blackpoint with severe shadows and gradients.
+/// However it tends to produce artifacts on lower frequency images and is therefore not
+/// a good general purpose binarizer for uses outside ZXing.
+///
+/// This class extends GlobalHistogramBinarizer, using the older histogram approach for 1D readers,
+/// and the newer local approach for 2D readers. 1D decoding using a per-row histogram is already
+/// inherently local, and only fails for horizontal gradients. We can revisit that problem later,
+/// but for now it was not a win to use local blocks for 1D.
+///
+/// This Binarizer is the default for the unit tests and the recommended class for library users.
+///
+/// </summary>
+/// <author>  dswitkin@google.com (Daniel Switkin)
+/// </author>
+/// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source
+/// </author>
+/// <author>Adapted for Delphi/Object Pascal FireMonkey XE7 mobile by E.Spelt
+/// </author>
+
+type
+  TArrayIntOfInt = TArray<TArray<Integer>>;
+
+  THybridBinarizer = class(TGlobalHistogramBinarizer)
+  private
+    matrix: TBitMatrix;
+    procedure BinarizeEntireImage;
+    procedure calculateThresholdForBlock(luminances: TArray<Byte>;
+      subWidth: Integer; subHeight: Integer; width: Integer; height: Integer;
+      blackPoints: TArrayIntOfInt; matrix: TBitMatrix);
+    function calculateBlackPoints(luminances: TArray<Byte>; subWidth: Integer;
+      subHeight: Integer; width: Integer; height: Integer): TArrayIntOfInt;
+    procedure thresholdBlock(luminances: TArray<Byte>; xoffset: Integer;
+      yoffset: Integer; threshold: Integer; stride: Integer;
+      matrix: TBitMatrix);
+    function cap(value: Integer; min: Integer; max: Integer): Integer;
+  protected
+    //
+  public
+    function createBinarizer(source: TLuminanceSource): TBinarizer; override;
+
+    constructor Create(source: TLuminanceSource);
+    function BlackMatrix: TBitMatrix; override;
+  end;
+
+implementation
+
+{ THybridBinarizer }
+
+function THybridBinarizer.BlackMatrix: TBitMatrix;
+begin
+  BinarizeEntireImage();
+  result := matrix;
+end;
+
+function THybridBinarizer.createBinarizer(source: TLuminanceSource): TBinarizer;
+begin
+  result := THybridBinarizer.Create(source)
+end;
+
+procedure THybridBinarizer.BinarizeEntireImage;
+var
+  source: TLuminanceSource;
+  luminances: TArray<Byte>;
+  subWidth, subHeight, width, height: Integer;
+  blackPoints: TArrayIntOfInt;
+  newMatrix: TBitMatrix;
+begin
+  if (self.matrix <> nil) then
+  begin
+    inherited BlackMatrix;
+    Exit;
+  end;
+
+  try
+
+    source := self.LuminanceSource;
+    width := source.width;
+    height := source.height;
+
+    if ((width >= 40) and (height >= 40)) then
+    begin
+      luminances := source.matrix;
+      subWidth := TMathUtils.Asr(width, 3);
+
+      if ((width and 7) <> 0) then
+        inc(subWidth);
+
+      subHeight := TMathUtils.Asr(height, 3);
+
+      if ((height and 7) <> 0) then
+        inc(subHeight);
+
+      blackPoints := calculateBlackPoints(luminances, subWidth, subHeight,
+        width, height);
+
+      newMatrix := TBitMatrix.Create(width, height);
+      calculateThresholdForBlock(luminances, subWidth, subHeight, width, height,
+        blackPoints, newMatrix);
+
+      self.matrix := newMatrix;
+    end;
+
+  finally
+    SetLength(blackPoints,0);
+    blackPoints := nil;
+    luminances := nil;
+  end;
+end;
+
+function THybridBinarizer.calculateBlackPoints(luminances: TArray<Byte>;
+  subWidth: Integer; subHeight: Integer; width: Integer; height: Integer)
+  : TArrayIntOfInt;
+var
+  blackPoints: TArrayIntOfInt;
+  i, x, y, yoffset, maxYOffset, xoffset, maxXOffset, sum, min, max, yy, offset,
+    xx, pixel, average, averageNeighborBlackPoint: Integer;
+
+begin
+  blackPoints := TArrayIntOfInt.Create();
+  SetLength(blackPoints, subHeight);
+  i := 0;
+
+  while ((i < subHeight)) do
+  begin
+    blackPoints[i] := TArray<Integer>.Create();
+    SetLength(blackPoints[i], subWidth);
+    inc(i)
+  end;
+
+  y := 0;
+
+  while ((y < subHeight)) do
+  begin
+
+    yoffset := (y shl 3);
+    maxYOffset := (height - 8);
+
+    if (yoffset > maxYOffset) then
+      yoffset := maxYOffset;
+    x := 0;
+
+    while ((x < subWidth)) do
+    begin
+      xoffset := (x shl 3);
+      maxXOffset := (width - 8);
+      if (xoffset > maxXOffset) then
+        xoffset := maxXOffset;
+      sum := 0;
+      min := $FF;
+      max := 0;
+      yy := 0;
+      offset := ((yoffset * width) + xoffset);
+
+      while ((yy < 8)) do
+      begin
+        xx := 0;
+        while ((xx < 8)) do
+        begin
+          pixel := (luminances[(offset + xx)] and $FF);
+          inc(sum, pixel);
+          if (pixel < min) then
+            min := pixel;
+          if (pixel > max) then
+            max := pixel;
+          inc(xx)
+        end;
+
+        if ((max - min) > $18) then
+        begin
+          inc(yy);
+          inc(offset, width);
+          while ((yy < 8)) do
+          begin
+            xx := 0;
+            while ((xx < 8)) do
+            begin
+              inc(sum, (luminances[(offset + xx)] and $FF));
+              inc(xx)
+            end;
+            inc(yy);
+            inc(offset, width)
+          end
+        end;
+        inc(yy);
+        inc(offset, width)
+      end;
+
+      average := TMathUtils.Asr(sum, 6);
+      if ((max - min) <= $18) then
+      begin
+        average := TMathUtils.Asr(min, 1);
+        if ((y > 0) and (x > 0)) then
+        begin
+          averageNeighborBlackPoint :=
+            TMathUtils.Asr
+            (((blackPoints[(y - 1)][x] + (2 * blackPoints[y][(x - 1)])) +
+            blackPoints[(y - 1)][(x - 1)]), 2);
+          if (min < averageNeighborBlackPoint) then
+            average := averageNeighborBlackPoint
+        end
+      end;
+      blackPoints[y][x] := average;
+      inc(x)
+    end;
+    inc(y)
+  end;
+
+  result := blackPoints;
+end;
+
+procedure THybridBinarizer.calculateThresholdForBlock(luminances: TArray<Byte>;
+  subWidth: Integer; subHeight: Integer; width: Integer; height: Integer;
+  blackPoints: TArrayIntOfInt; matrix: TBitMatrix);
+var
+  y, yoffset, maxYOffset, x, xoffset, maxXOffset, left, top, sum, z,
+    average: Integer;
+  blackRow: TArray<Integer>;
+begin
+  y := 0;
+  while ((y < subHeight)) do
+  begin
+    yoffset := (y shl 3);
+    maxYOffset := (height - 8);
+    if (yoffset > maxYOffset) then
+      yoffset := maxYOffset;
+    x := 0;
+    while ((x < subWidth)) do
+    begin
+      xoffset := (x shl 3);
+      maxXOffset := (width - 8);
+      if (xoffset > maxXOffset) then
+        xoffset := maxXOffset;
+      left := cap(x, 2, (subWidth - 3));
+      top := cap(y, 2, (subHeight - 3));
+      sum := 0;
+      z := -2;
+      while ((z <= 2)) do
+      begin
+        blackRow := blackPoints[(top + z)];
+        inc(sum, blackRow[(left - 2)]);
+        inc(sum, blackRow[(left - 1)]);
+        inc(sum, blackRow[left]);
+        inc(sum, blackRow[(left + 1)]);
+        inc(sum, blackRow[(left + 2)]);
+        inc(z)
+      end;
+      average := (sum div $19);
+      thresholdBlock(luminances, xoffset, yoffset, average, width, matrix);
+      inc(x)
+    end;
+    inc(y)
+  end
+end;
+
+constructor THybridBinarizer.Create(source: TLuminanceSource);
+begin
+  inherited Create(source);
+end;
+
+procedure THybridBinarizer.thresholdBlock(luminances: TArray<Byte>;
+  xoffset: Integer; yoffset: Integer; threshold: Integer; stride: Integer;
+  matrix: TBitMatrix);
+var
+  offset, x, y, pixel: Integer;
+begin
+  offset := ((yoffset * stride) + xoffset);
+  y := 0;
+  while ((y < 8)) do
+  begin
+    x := 0;
+    while ((x < 8)) do
+    begin
+      pixel := (luminances[(offset + x)] and $FF);
+      matrix[(xoffset + x), (yoffset + y)] := (pixel <= threshold);
+      inc(x)
+    end;
+    inc(y);
+    inc(offset, stride)
+  end
+end;
+
+function THybridBinarizer.cap(value: Integer; min: Integer;
+  max: Integer): Integer;
+begin
+
+  if (value < min) then
+  begin
+    result := min
+  end
+  else if (value > max) then
+  begin
+    result := max
+  end
+  else
+    result := value
+end;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.InvertedLuminanceSource.pas

@@ -0,0 +1,159 @@
+{
+  * Copyright 2013 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: dswitkin@google.com (Daniel Switkin)
+  * Delphi Implementation by K. Gossens
+}
+
+unit ZXing.InvertedLuminanceSource;
+
+interface
+
+uses
+  System.SysUtils,
+  ZXing.LuminanceSource;
+
+type
+  TInvertedLuminanceSource = class sealed(TLuminanceSource)
+  private
+    delegate: TLuminanceSource;
+    invertedMatrix: TArray<Byte>;
+  public
+    constructor Create(delegate: TLuminanceSource); reintroduce;
+
+    function crop(const left, top, width, height: Integer): TLuminanceSource; override;
+    function getRow(const y: Integer; row: TArray<Byte>): TArray<Byte>; override;
+    function rotateCounterClockwise(): TLuminanceSource; override;
+    function rotateCounterClockwise45(): TLuminanceSource; override;
+
+    function invert: TLuminanceSource; override;
+    function Matrix: TArray<Byte>; override;
+    function CropSupported: Boolean; override;
+    function RotateSupported: Boolean; override;
+  end;
+
+implementation
+
+{ TInvertedLuminanceSource }
+
+/// <summary>
+/// Initializes a new instance of the <see cref="InvertedLuminanceSource"/> class.
+/// </summary>
+/// <param name="delegate">The @delegate.</param>
+constructor TInvertedLuminanceSource.Create(delegate: TLuminanceSource);
+begin
+  inherited Create(delegate.Width, delegate.Height);
+  Self.delegate := delegate;
+end;
+  
+/// <summary>
+/// Fetches one row of luminance data from the underlying platform's bitmap. Values range from
+/// 0 (black) to 255 (white). Because Java does not have an unsigned byte type, callers will have
+/// to bitwise and with 0xff for each value. It is preferable for implementations of this method
+/// to only fetch this row rather than the whole image, since no 2D Readers may be installed and
+/// getMatrix() may never be called.
+/// </summary>
+/// <param name="y">The row to fetch, 0 &lt;= y &lt; Height.</param>
+/// <param name="row">An optional preallocated array. If null or too small, it will be ignored.
+/// Always use the returned object, and ignore the .length of the array.</param>
+/// <returns>
+/// An array containing the luminance data.
+/// </returns>
+function TInvertedLuminanceSource.getRow(const y: Integer; row: TArray<Byte>): TArray<Byte>;
+var
+  rowArray : TArray<Byte>;
+  i, width : Integer;
+begin
+  rowArray := delegate.getRow(y, row);
+  width := Self.Width;
+  for i := 0 to Pred(width) do
+    rowArray[i] := (255 - (row[i] and $FF));
+  
+  Result := rowArray;
+end;
+
+/// <summary>
+/// Fetches luminance data for the underlying bitmap. Values should be fetched using:
+/// int luminance = array[y * width + x] &amp; 0xff;
+/// </summary>
+/// <returns> A row-major 2D array of luminance values. Do not use result.length as it may be
+/// larger than width * height bytes on some platforms. Do not modify the contents
+/// of the result.
+///   </returns>
+function TInvertedLuminanceSource.Matrix: TArray<Byte>;
+var
+  matrixArray: TArray<Byte>;
+  i, len: Integer;
+begin
+  if (invertedMatrix = nil) then
+  begin
+    matrixArray := delegate.Matrix;
+    len := Self.Width * Self.Height;
+    invertedMatrix := TArray<Byte>.Create();
+    SetLength(invertedMatrix, len);
+    for i := 0 to Pred(len) do
+      invertedMatrix[i] := (255 - (matrixArray[i] and $FF));
+
+    Result := invertedMatrix;
+  end;
+end;
+
+/// <summary>
+/// </summary>
+/// <returns> Whether this subclass supports cropping.</returns>
+function TInvertedLuminanceSource.CropSupported: Boolean;
+begin
+  Result := delegate.CropSupported;
+end;
+
+/// <summary>
+/// Returns a new object with cropped image data. Implementations may keep a reference to the
+/// original data rather than a copy. Only callable if CropSupported is true.
+/// </summary>
+/// <param name="left">The left coordinate, 0 &lt;= left &lt; Width.</param>
+/// <param name="top">The top coordinate, 0 &lt;= top &lt;= Height.</param>
+/// <param name="width">The width of the rectangle to crop.</param>
+/// <param name="height">The height of the rectangle to crop.</param>
+/// <returns>
+/// A cropped version of this object.
+/// </returns>
+function TInvertedLuminanceSource.crop(const left, top,
+  width, height: Integer): TLuminanceSource;
+begin
+  Result := TInvertedLuminanceSource.Create(Self.delegate.crop(left, top,
+    width, height));
+end;
+
+function TInvertedLuminanceSource.invert: TLuminanceSource;
+begin
+  Result := self.delegate;
+end;
+
+function TInvertedLuminanceSource.rotateCounterClockwise(): TLuminanceSource;
+begin
+  Result := TInvertedLuminanceSource.Create(Self.delegate.rotateCounterClockwise);
+end;
+
+function TInvertedLuminanceSource.rotateCounterClockwise45(): TLuminanceSource;
+begin
+  Result := TInvertedLuminanceSource.Create(Self.delegate.rotateCounterClockwise45);
+end;
+
+function TInvertedLuminanceSource.RotateSupported: Boolean;
+begin
+  Result := delegate.RotateSupported;;
+end;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.LuminanceSource.pas

@@ -0,0 +1,221 @@
+{
+  * Copyright 2009 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: dswitkin@google.com (Daniel Switkin)
+  * Delphi Implementation by E.Spelt and K. Gossens
+}
+
+unit ZXing.LuminanceSource;
+
+interface
+
+uses
+  System.SysUtils;
+
+type
+  /// <summary>
+  /// The purpose of this class hierarchy is to abstract different bitmap implementations across
+  /// platforms into a standard interface for requesting greyscale luminance values. The interface
+  /// only provides immutable methods; therefore crop and rotation create copies. This is to ensure
+  /// that one Reader does not modify the original luminance source and leave it in an unknown state
+  /// for other Readers in the chain.
+  /// </summary>
+  TLuminanceSource = class
+  protected
+    FWidth: Integer;
+    FHeight: Integer;
+  public
+    constructor Create(const width, height: Integer); virtual;
+    /// <summary>
+    /// Fetches luminance data for the underlying bitmap. Values should be fetched using:
+    /// <code>int luminance = array[y * width + x] and 0xff</code>
+    /// </summary>
+    /// <returns>
+    /// A row-major 2D array of luminance values. Do not use result.length as it may be
+    /// larger than width * height bytes on some platforms. Do not modify the contents
+    /// of the result.
+    /// </returns>
+	function Matrix: TArray<byte>; virtual; abstract;
+    /// <summary>
+    /// Fetches one row of luminance data from the underlying platform's bitmap. Values range from
+    /// 0 (black) to 255 (white). Because Java does not have an unsigned byte type, callers will have
+    /// to bitwise and with 0xff for each value. It is preferable for implementations of this method
+    /// to only fetch this row rather than the whole image, since no 2D Readers may be installed and
+    /// getMatrix() may never be called.
+    /// </summary>
+    /// <param name="y">The row to fetch, which must be in [0, bitmap height)</param>
+    /// <param name="row">An optional preallocated array. If null or too small, it will be ignored.
+    /// Always use the returned object, and ignore the .length of the array.
+    /// </param>
+    /// <returns> An array containing the luminance data.</returns>    
+	function getRow(const y: Integer; row: TArray<byte>): TArray<byte>;
+      virtual; abstract;
+
+    /// <summary> 
+    /// Returns a new object with cropped image data. Implementations may keep a reference to the
+    /// original data rather than a copy. Only callable if CropSupported is true.
+    /// </summary>
+    /// <param name="left">The left coordinate, which must be in [0, Width)</param>
+    /// <param name="top">The top coordinate, which must be in [0, Height)</param>
+    /// <param name="width">The width of the rectangle to crop.</param>
+    /// <param name="height">The height of the rectangle to crop.</param>
+    /// <returns> A cropped version of this object.</returns>
+	function crop(const left, top, width,
+      height: Integer): TLuminanceSource; virtual;
+    function invert(): TLuminanceSource; virtual;
+    function ToString(): String; override;
+
+    /// <returns> Whether this subclass supports counter-clockwise rotation.</returns>
+	function RotateSupported: Boolean; virtual;
+    /// <returns> Whether this subclass supports cropping.</returns>
+	function CropSupported(): Boolean; virtual;
+    /// <returns>Whether this subclass supports invertion.</returns>
+	function InversionSupported: Boolean; virtual;
+
+    /// <summary>
+    /// Returns a new object with rotated image data by 90 degrees counterclockwise.
+    /// Only callable if <see cref="RotateSupported"/> is true.
+    /// </summary>
+    /// <returns>A rotated version of this object.</returns>
+	function rotateCounterClockwise(): TLuminanceSource; virtual;
+    /// <summary>
+    /// Returns a new object with rotated image data by 45 degrees counterclockwise.
+    /// Only callable if <see cref="RotateSupported"/> is true.
+    /// </summary>
+    /// <returns>A rotated version of this object.</returns>    
+	function rotateCounterClockwise45(): TLuminanceSource; virtual;
+
+    /// <returns> The height of the bitmap.</returns>
+	property Height: Integer read FHeight;
+    /// <returns> The width of the bitmap.</returns>
+	property Width: Integer read FWidth;
+  end;
+
+implementation
+
+constructor TLuminanceSource.Create(const width, height: Integer);
+begin
+  FWidth := width;
+  FHeight := height;
+end;
+
+function TLuminanceSource.CropSupported: Boolean;
+begin
+  Result := False;
+end;
+
+// <returns> Whether this subclass supports counter-clockwise rotation.</returns>
+function TLuminanceSource.RotateSupported: Boolean;
+begin
+  Result := False;
+end;
+
+/// <returns>Whether this subclass supports invertion.</returns>
+function TLuminanceSource.InversionSupported: Boolean;
+begin
+  Result := False;
+end;
+
+/// <summary>
+/// Returns a new object with cropped image data. Implementations may keep a reference to the
+/// original data rather than a copy. Only callable if CropSupported is true.
+/// </summary>
+/// <param name="left">The left coordinate, which must be in [0, Width)</param>
+/// <param name="top">The top coordinate, which must be in [0, Height)</param>
+/// <param name="width">The width of the rectangle to crop.</param>
+/// <param name="height">The height of the rectangle to crop.</param>
+/// <returns> A cropped version of this object.</returns>
+function TLuminanceSource.Crop(const left, top,
+  width, height: Integer): TLuminanceSource;
+begin
+  raise ENotImplemented.Create
+    ('This luminance source does not support cropping.');
+end;
+
+/// <summary>
+/// Returns a new object with rotated image data by 90 degrees counterclockwise.
+/// Only callable if <see cref="RotateSupported"/> is true.
+/// </summary>
+/// <returns>A rotated version of this object.</returns>
+function TLuminanceSource.rotateCounterClockwise(): TLuminanceSource;
+begin
+  raise ENotImplemented.Create
+    ('This luminance source does not support rotation.');
+end;
+
+/// <summary>
+/// Returns a new object with rotated image data by 45 degrees counterclockwise.
+/// Only callable if <see cref="RotateSupported"/> is true.
+/// </summary>
+/// <returns>A rotated version of this object.</returns>
+function TLuminanceSource.rotateCounterClockwise45(): TLuminanceSource;
+begin
+  raise ENotImplemented.Create
+    ('This luminance source does not support rotation by 45 degrees.');
+end;
+
+function TLuminanceSource.invert(): TLuminanceSource;
+begin
+  raise ENotImplemented.Create
+    ('This luminance source does not support inversion.');
+end;
+
+function TLuminanceSource.ToString(): String;
+var
+  row: TArray<byte>;
+  res: TStringBuilder;
+  x, y,
+  luminance: Integer;
+  c: char;
+begin
+  row := TArray<Byte>.Create();
+  SetLength(row, FWidth);
+
+  res := TStringBuilder.Create(height * (width + 1));
+  try
+    for y := 0 to FHeight - 1 do
+    begin
+      row := GetRow(y, row);
+      for x := 0 to Pred(FWidth) do
+      begin
+        luminance := row[x] and $FF;
+        if (luminance < $40)
+        then
+           c := '#'
+        else
+           if (luminance < $80)
+           then
+              c := '+'
+           else
+              if (luminance < $C0)
+              then
+                 c := '.'
+              else
+                 c := ' ';
+
+        res.Append(c);
+      end;
+
+      res.Append(#10);
+    end;
+  finally
+    row := nil; // ES: can become a be a big memory hog, so release it as quickly as possible.
+    Result := res.ToString;
+    res.Free;
+  end;
+
+end;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.PlanarYUVLuminanceSource.pas

@@ -0,0 +1,327 @@
+{
+  * Copyright 2009 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: dswitkin@google.com (Daniel Switkin)
+  * Delphi Implementation K. Gossens
+}
+
+unit ZXing.PlanarYUVLuminanceSource;
+
+interface
+uses
+  System.SysUtils,
+  System.UITypes,
+  System.TypInfo,
+  ZXing.LuminanceSource,
+  ZXing.BaseLuminanceSource;
+
+type 
+  /// <summary>
+  /// Luminance source class which support different formats of images.
+  /// </summary>
+  TPlanarYUVLuminanceSource = class(TBaseLuminanceSource)
+  private
+    yuvData : TArray<Byte>;
+    dataWidth,
+    dataHeight,
+    left, top : Integer;
+
+    const
+       THUMBNAIL_SCALE_FACTOR : Integer = 2;
+
+    procedure reverseHorizontal(const width, height: Integer);
+  protected
+    function CreateLuminanceSource(const newLuminances: TArray<Byte>;
+      const width, height: Integer): TLuminanceSource; override;
+  public
+    constructor Create(const yuvData: TArray<Byte>;
+      const dataWidth, dataHeight, left, top, width, height: Integer;
+      const reverseHoriz: Boolean); overload;
+    constructor Create(const luminances: TArray<Byte>;
+      const width, height: Integer); overload;
+
+    function getRow(const y: Integer; row: TArray<Byte>): TArray<Byte>; override;
+    function crop(const left, top,
+      width, height: Integer): TLuminanceSource; override;
+
+    function Matrix: TArray<Byte>; override;
+    function CropSupported: Boolean; override;
+
+    function renderThumbnail(): TArray<Integer>;
+    function ThumbnailWidth(): Integer;
+    function ThumbnailHeight(): Integer;
+
+  end;
+
+implementation
+
+/// <summary>
+/// Initializes a new instance of the <see cref="PlanarYUVLuminanceSource"/> class.
+/// </summary>
+/// <param name="yuvData">The yuv data.</param>
+/// <param name="dataWidth">Width of the data.</param>
+/// <param name="dataHeight">Height of the data.</param>
+/// <param name="left">The left.</param>
+/// <param name="top">The top.</param>
+/// <param name="width">The width.</param>
+/// <param name="height">The height.</param>
+/// <param name="reverseHoriz">if set to <c>true</c> [reverse horiz].</param>
+constructor TPlanarYUVLuminanceSource.Create(const yuvData: TArray<Byte>; 
+  const dataWidth, dataHeight, left, top, width, height: Integer; 
+  const reverseHoriz: Boolean);
+begin
+  inherited Create(width, height);
+  
+  if ((left + width > dataWidth) or (top + height > dataHeight)) 
+  then
+     raise EArgumentException.Create('Crop rectangle does not fit within image data.');
+
+  Self.yuvData := yuvData;
+  Self.dataWidth := dataWidth;
+  Self.dataHeight := dataHeight;
+  Self.left := left;
+  Self.top := top;
+  if (reverseHoriz) 
+  then
+     reverseHorizontal(width, height);
+end;
+
+/// <summary>
+/// Initializes a new instance of the <see cref="PlanarYUVLuminanceSource"/> class.
+/// </summary>
+/// <param name="luminances">The luminances.</param>
+/// <param name="width">The width.</param>
+/// <param name="height">The height.</param>
+constructor TPlanarYUVLuminanceSource.Create(const luminances: TArray<Byte>; 
+  const width, height: Integer);
+begin
+  inherited Create(width, height);
+
+  Self.yuvData := luminances;
+  Self.luminances := luminances;
+  Self.dataWidth := width;
+  Self.dataHeight := height;
+  Self.left := 0;
+  Self.top := 0;
+end;
+
+/// <summary>
+/// Fetches one row of luminance data from the underlying platform's bitmap. Values range from
+/// 0 (black) to 255 (white). Because Java does not have an unsigned byte type, callers will have
+/// to bitwise and with 0xff for each value. It is preferable for implementations of this method
+/// to only fetch this row rather than the whole image, since no 2D Readers may be installed and
+/// getMatrix() may never be called.
+/// </summary>
+/// <param name="y">The row to fetch, 0 &lt;= y &lt; Height.</param>
+/// <param name="row">An optional preallocated array. If null or too small, it will be ignored.
+/// Always use the returned object, and ignore the .length of the array.</param>
+/// <returns>
+/// An array containing the luminance data.
+/// </returns>
+ function TPlanarYUVLuminanceSource.getRow(const y: Integer;
+   row: TArray<Byte>): TArray<Byte>;
+ var
+   width,
+   offset: Integer;
+ begin
+  if ((y < 0) or (y >= Height)) 
+  then
+     raise EArgumentException.Create('Requested row is outside the image: ' + IntToStr(y));
+  
+  width := Self.Width;
+  if ((row = nil) or (Length(row) < width)) then
+  begin
+    row := nil;
+    row := TArray<Byte>.Create();
+    SetLength(row, width);
+  end;
+
+  offset := (y + top) * dataWidth + left;
+  row := Copy(yuvData, offset, width);
+  
+  Result := row;
+end;
+
+/// <summary>
+///
+/// </summary>
+function TPlanarYUVLuminanceSource.Matrix: TArray<Byte>;
+var
+  width,
+  height,
+  area, y : Integer;
+  inputOffset,
+  outputOffset : Integer;
+  matrix,
+  yuv: TArray<Byte>;
+begin
+  width := Self.Width;
+  height := Self.Height;
+
+  // If the caller asks for the entire underlying image, save the copy and give them the
+  // original data. The docs specifically warn that result.length must be ignored.
+  if ((width = dataWidth) and (height = dataHeight)) then
+  begin
+    Result := Self.yuvData;
+    exit;
+  end;
+
+  area := width * height;
+  matrix := TArray<Byte>.Create();
+  SetLength(matrix, area);
+  inputOffset := (top * dataWidth) + left;
+
+  // If the width matches the full width of the underlying data, perform a single copy.
+  if (width = dataWidth) then
+  begin
+    matrix := Copy(yuvData, inputOffset, area);
+    Result := matrix;
+    exit;
+  end;
+
+  // Otherwise copy one cropped row at a time.
+  yuv := yuvData;
+  for y := 0 to Pred(height) do
+  begin
+    outputOffset := y * width;
+    Move(yuv[inputOffSet], matrix[outputOffset], width);
+    Inc(inputOffset, dataWidth);
+  end;
+
+  Result := matrix;
+end;
+
+/// <summary>
+/// </summary>
+/// <returns> Whether this subclass supports cropping.</returns>
+function TPlanarYUVLuminanceSource.CropSupported: Boolean;
+begin
+  Result := true;
+end;
+
+/// <summary>
+/// Returns a new object with cropped image data. Implementations may keep a reference to the
+/// original data rather than a copy. Only callable if CropSupported is true.
+/// </summary>
+/// <param name="left">The left coordinate, 0 &lt;= left &lt; Width.</param>
+/// <param name="top">The top coordinate, 0 &lt;= top &lt;= Height.</param>
+/// <param name="width">The width of the rectangle to crop.</param>
+/// <param name="height">The height of the rectangle to crop.</param>
+/// <returns>
+/// A cropped version of this object.
+/// </returns>
+function TPlanarYUVLuminanceSource.crop(const left, top,
+  width, height: Integer): TLuminanceSource;
+begin
+  Result := TPlanarYUVLuminanceSource.Create(yuvData,
+                                             dataWidth,
+                                             dataHeight,
+                                             Self.left + left,
+                                             Self.top + top,
+                                             width,
+                                             height,
+                                             false);
+end;
+
+/// <summary>
+/// Renders the cropped greyscale bitmap.
+/// </summary>
+/// <returns></returns>
+function TPlanarYUVLuminanceSource.renderThumbnail(): TArray<Integer>;
+var
+  width,
+  height : Integer;
+  pixels : TArray<Integer>;
+  yuv : TArray<Byte>;
+  x, y,
+  inputOffset,
+  outputOffset : Integer;
+  grey : Byte;
+begin
+  width := Self.Width div THUMBNAIL_SCALE_FACTOR;
+  height := Self.Height div THUMBNAIL_SCALE_FACTOR;
+  pixels := TArray<Integer>.Create();
+  SetLength(pixels, (width * height));
+
+  yuv := yuvData;
+  inputOffset := (top * dataWidth) + left;
+
+  for y := 0 to Pred(height) do
+  begin
+    outputOffset := y * width;
+    for x := 0 to Pred(width) do
+    begin
+      grey := yuv[inputOffset + x * THUMBNAIL_SCALE_FACTOR] and $ff;
+      pixels[outputOffset + x] := (($00FF0000 shl 8) or (grey * $00010101));
+    end;
+    Inc(inputOffset, (dataWidth * THUMBNAIL_SCALE_FACTOR));
+  end;
+  Result := pixels;
+end;
+
+/// <summary>
+/// width of image from {@link #renderThumbnail()}
+/// </summary>
+function TPlanarYUVLuminanceSource.ThumbnailWidth(): Integer;
+begin
+  Result := (Self.Width div THUMBNAIL_SCALE_FACTOR);
+end;
+
+/// <summary>
+/// height of image from {@link #renderThumbnail()}
+/// </summary>
+function TPlanarYUVLuminanceSource.ThumbnailHeight(): Integer;
+begin
+  Result := (Self.Height div THUMBNAIL_SCALE_FACTOR);
+end;
+
+procedure TPlanarYUVLuminanceSource.reverseHorizontal(const width, height: Integer);
+var
+  yuvData : TArray<Byte>;
+  y,
+  x1, x2,
+  middle,
+  rowStart : Integer;
+  temp : Byte;
+begin
+  yuvData := Self.yuvData;
+  y := 0;
+  rowStart := ((self.top * self.dataWidth) + self.left);
+  while ((y < height)) do
+  begin
+    middle := (rowStart + (width div 2));
+    x1 := rowStart;
+    x2 := ((rowStart + width) - 1);
+    while ((x1 < middle)) do
+    begin
+      temp := yuvData[x1];
+      yuvData[x1] := yuvData[x2];
+      yuvData[x2] := temp;
+      Inc(x1);
+      Dec(x2)
+    end;
+    Inc(y);
+    Inc(rowStart, self.dataWidth)
+  end;
+end;
+
+function TPlanarYUVLuminanceSource.CreateLuminanceSource(
+  const newLuminances: TArray<Byte>;
+  const width, height: Integer): TLuminanceSource;
+begin
+  Result := TPlanarYUVLuminanceSource.Create(newLuminances, width, height);
+end;
+
+end.

android-client/ThirdParty/ZXing/Filtering/ZXing.RGBLuminanceSource.pas

@@ -0,0 +1,565 @@
+{
+  * Copyright 2012 ZXing authors
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License");
+  * you may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at
+  *
+  *      http://www.apache.org/licenses/LICENSE-2.0
+  *
+  * Unless required by applicable law or agreed to in writing, software
+  * distributed under the License is distributed on an "AS IS" BASIS,
+  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+
+  * Original Author: dswitkin@google.com (Daniel Switkin)
+  * Delphi Implementation by E.Spelt and K. Gossens
+}
+
+unit ZXing.RGBLuminanceSource;
+
+interface
+uses
+  System.SysUtils,
+  System.UITypes,
+  System.TypInfo,
+{$IFDEF FRAMEWORK_FMX}
+  FMX.Graphics,
+{$ENDIF}
+{$IFDEF FRAMEWORK_VCL}
+  Winapi.Windows,
+  VCL.Graphics,
+{$ENDIF}
+  ZXing.LuminanceSource,
+  ZXing.BaseLuminanceSource,
+  ZXing.Common.Detector.MathUtils;
+
+type
+  /// <summary>
+  /// enumeration of supported bitmap format which the RGBLuminanceSource can process
+  /// </summary>
+  TBitmapFormat = (
+    /// <summary>
+    /// format of the byte[] isn't known. RGBLuminanceSource tries to determine the best possible value
+    /// </summary>
+    Unknown,
+    /// <summary>
+    /// grayscale array, the byte array is a luminance array with 1 byte per pixel
+    /// </summary>
+    Gray8,
+    /// <summary>
+    /// 3 bytes per pixel with the channels red, green and blue
+    /// </summary>
+    RGB24,
+    /// <summary>
+    /// 4 bytes per pixel with the channels red, green and blue
+    /// </summary>
+    RGB32,
+    /// <summary>
+    /// 4 bytes per pixel with the channels alpha, red, green and blue
+    /// </summary>
+    ARGB32,
+    /// <summary>
+    /// 3 bytes per pixel with the channels blue, green and red
+    /// </summary>
+    BGR24,
+    /// <summary>
+    /// 4 bytes per pixel with the channels blue, green and red
+    /// </summary>
+    BGR32,
+    /// <summary>
+    /// 4 bytes per pixel with the channels blue, green, red and alpha
+    /// </summary>
+    BGRA32,
+    /// <summary>
+    /// 2 bytes per pixel, 5 bit red, 6 bits green and 5 bits blue
+    /// </summary>
+    RGB565,
+    /// <summary>
+    /// 4 bytes per pixel with the channels red, green, blue and alpha
+    /// </summary>
+    RGBA32); 
+
+  /// <summary>
+  /// Luminance source class which support different formats of images.
+  /// </summary>
+  TRGBLuminanceSource = class(TBaseLuminanceSource)
+  private
+    function DetermineBitmapFormat(const rgbRawBytes: TArray<Byte>;
+      const width, height: Integer): TBitmapFormat;
+
+    procedure CalculateLuminanceRGB24(const rgbRawBytes: TArray<Byte>);
+    procedure CalculateLuminanceRGB32(const rgbRawBytes: TArray<Byte>);
+    procedure CalculateLuminanceRGBA32(const rgbRawBytes: TArray<Byte>);
+    procedure CalculateLuminanceRGB565(const rgb565RawData: TArray<Byte>);
+
+    procedure CalculateLuminanceBGR24(const rgbRawBytes: TArray<Byte>);
+    procedure CalculateLuminanceBGR32(const rgbRawBytes: TArray<Byte>);
+    procedure CalculateLuminanceBGRA32(const rgbRawBytes: TArray<Byte>);
+
+    procedure CalculateLuminanceARGB32(const rgbRawBytes: TArray<Byte>);
+
+    function GetBitmapFormat: TBitmapFormat;
+  protected
+    function CreateLuminanceSource(const newLuminances: TArray<Byte>;
+      const width, height: Integer): TLuminanceSource; override;
+    procedure CalculateLuminance(const rgbRawBytes: TArray<Byte>;
+      bitmapFormat: TBitmapFormat);
+  public
+    constructor Create(const width, height: Integer); overload;
+    constructor Create(const rgbRawBytes: TArray<Byte>;
+      const width, height: Integer); overload;
+    constructor Create(const rgbRawBytes: TArray<Byte>;
+      const width, height: Integer; const bitmapFormat: TBitmapFormat); overload;
+    constructor CreateFromBitmap(const sourceBitmap: TBitmap;
+      const width, height: Integer);
+
+    property BitmapFormat : TBitmapFormat read GetBitmapFormat;
+  end;
+
+implementation
+uses ZXing.Helpers;
+
+/// <summary>
+/// Initializes a new instance of the <see cref="RGBLuminanceSource"/> class.
+/// </summary>
+/// <param name="width">The width.</param>
+/// <param name="height">The height.</param>
+constructor TRGBLuminanceSource.Create(const width, height: Integer);
+begin
+  inherited Create(width, height);
+end;
+
+/// <summary>
+/// Initializes a new instance of the <see cref="RGBLuminanceSource"/> class.
+/// It supports a byte array with 3 bytes per pixel (RGB24).
+/// </summary>
+/// <param name="rgbRawBytes">The RGB raw bytes.</param>
+/// <param name="width">The width.</param>
+/// <param name="height">The height.</param>
+constructor TRGBLuminanceSource.Create(const rgbRawBytes: TArray<Byte>;
+  const width, height: Integer);
+begin
+  Create(rgbRawBytes, width, height, TBitmapFormat.RGB24);
+end;
+
+/// <summary>
+/// Initializes a new instance of the <see cref="RGBLuminanceSource"/> class.
+/// It supports a byte array with 3 bytes per pixel (RGB24).
+/// </summary>
+/// <param name="rgbRawBytes">The RGB raw bytes.</param>
+/// <param name="width">The width.</param>
+/// <param name="height">The height.</param>
+/// <param name="bitmapFormat">The bitmap format.</param>
+constructor TRGBLuminanceSource.Create(const rgbRawBytes: TArray<Byte>;
+  const width, height: Integer; const bitmapFormat: TBitmapFormat);
+begin
+  inherited Create(width, height);
+  CalculateLuminance(rgbRawBytes, bitmapFormat);
+end;
+
+{$IFDEF FRAMEWORK_FMX}
+// FMX TBitmap implementation
+constructor TRGBLuminanceSource.CreateFromBitmap(const sourceBitmap: TBitmap;
+   const width, height: Integer);
+var
+  x, y,
+  offset : Integer;
+  color : TAlphaColor;
+  r, g, b : Byte;
+  currentData: TBitmapData;
+begin
+  Self.Create(width, height);
+
+  // In order to measure pure decoding speed, we convert the entire image to a greyscale array
+  // up front, which is the same as the Y channel of the YUVLuminanceSource in the real app.
+
+  if (sourceBitmap.Map(TMapAccess.Read, currentData)) then
+  begin
+    try
+      for y := 0 to FHeight - 1 do
+      begin
+        offset := y * FWidth;
+        for x := 0 to FWidth - 1 do
+        begin
+          color := currentData.GetPixel(x, y);
+          r := TAlphaColorRec(color).R;
+          g := TAlphaColorRec(color).G;
+          b := TAlphaColorRec(color).B;
+          luminances[offset + x] := TMathUtils.Asr(3482*r + 11721*g + 1181*b, 14);
+        end;
+      end;
+    finally
+      sourceBitmap.Unmap(currentData);
+      //sourceBitmap.DisposeOf();
+    end;
+  end;
+end;
+{$ENDIF}
+{$IFDEF FRAMEWORK_VCL}
+// VCL TBitmap implementation
+constructor TRGBLuminanceSource.CreateFromBitmap(const sourceBitmap: TBitmap; const width, height: Integer);
+type
+  TRGBTripleArray = ARRAY[Word] of TRGBTriple;
+  pRGBTripleArray = ^TRGBTripleArray; // Use a PByteArray for pf8bit color.
+
+var
+  x, y,
+  offset : Integer;
+  r, g, b : Byte;
+  P: pRGBTripleArray;
+
+begin
+  Self.Create(width, height);
+  sourceBitmap.PixelFormat := pf24bit;
+  for y := 0 to sourceBitmap.Height - 1 do
+  begin
+    offset := y * FWidth;
+    P := sourceBitmap.ScanLine[y];
+    for x := 0 to sourceBitmap.Width - 1 do
+    begin
+       r := P[x].rgbtRed;
+       g := P[x].rgbtGreen;
+       b := P[x].rgbtBlue;
+       luminances[offset + x] := TMathUtils.Asr(3482*r + 11721*g + 1181*b, 14);
+    end;
+  end;
+end;
+{$ENDIF}
+
+/// <summary>
+/// Should create a new luminance source with the right class type.
+/// The method is used in methods crop and rotate.
+/// </summary>
+/// <param name="newLuminances">The new luminances.</param>
+/// <param name="width">The width.</param>
+/// <param name="height">The height.</param>
+/// <returns></returns>
+function TRGBLuminanceSource.CreateLuminanceSource(
+  const newLuminances: TArray<Byte>;
+  const width, height: Integer): TLuminanceSource;
+begin
+  Result := TRGBLuminanceSource.Create(width, height);
+  luminances := newLuminances;
+end;
+
+function TRGBLuminanceSource.DetermineBitmapFormat(
+  const rgbRawBytes: TArray<Byte>;
+  const width, height: Integer): TBitmapFormat;
+var
+  square,
+  byteperpixel : Integer;
+begin
+  square := (width * height);
+  byteperpixel := (Length(rgbRawBytes) div square);
+
+  case byteperpixel of
+    1: Result := TBitmapFormat.Gray8;
+    2: Result := TBitmapFormat.RGB565;
+    3: Result := TBitmapFormat.RGB24;
+    4: Result := TBitmapFormat.RGB32;
+    else
+       raise EArgumentException.Create('The bitmap format could not be determined. Please specify the correct value.');
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminance(const rgbRawBytes: TArray<Byte>;
+  bitmapFormat: TBitmapFormat);
+var
+  len: Integer;
+begin
+  if (bitmapFormat = TBitmapFormat.Unknown)
+  then
+     bitmapFormat := DetermineBitmapFormat(rgbRawBytes, self.Width, self.Height);
+
+  case bitmapFormat of
+    TBitmapFormat.Gray8 :
+      begin
+        if (Length(rgbRawBytes) < Length(luminances))
+        then
+           len := Length(rgbRawBytes)
+        else
+           len := Length(luminances);
+
+        Copy(rgbRawBytes, 0, len);
+      end;
+    TBitmapFormat.RGB24 :
+      begin
+        CalculateLuminanceRGB24(rgbRawBytes);
+      end;
+    TBitmapFormat.RGB32 :
+      begin
+        CalculateLuminanceRGB32(rgbRawBytes);
+      end;
+    TBitmapFormat.ARGB32 :
+      begin
+        CalculateLuminanceARGB32(rgbRawBytes);
+      end;
+    TBitmapFormat.BGR24 :
+      begin
+        CalculateLuminanceBGR24(rgbRawBytes);
+      end;
+    TBitmapFormat.BGR32 :
+      begin
+        CalculateLuminanceBGR32(rgbRawBytes);
+      end;
+    TBitmapFormat.BGRA32 :
+      begin
+        CalculateLuminanceBGRA32(rgbRawBytes);
+      end;
+    TBitmapFormat.RGB565 :
+      begin
+        CalculateLuminanceRGB565(rgbRawBytes);
+      end;
+    TBitmapFormat.RGBA32 :
+      begin
+        CalculateLuminanceRGBA32(rgbRawBytes);
+      end;
+     else
+        raise EArgumentException.Create('The bitmap format isn''t supported.' +
+          GetEnumName(TypeInfo(TBitmapFormat), Ord(bitmapFormat)))
+    end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceRGB565(
+  const rgb565RawData: TArray<Byte>);
+var
+  luminanceIndex,
+  index  : Integer;
+  byte1,
+  byte2,
+  b5, g5, r5,
+  r8, g8, b8 : Byte;
+begin
+  luminanceIndex := 0;
+  index := 0;
+  while (((index < Length(rgb565RawData)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    byte1 := rgb565RawData[index];
+    byte2 := rgb565RawData[index + 1];
+
+    b5 := (byte1 and $1F);
+    g5 := (TMathUtils.Asr(byte1 and $E0 , 5) or ((byte2 and $03) shl 3)) and $1F;
+    r5 := TMathUtils.Asr(byte2, 2) and $1F;
+    r8 := TMathUtils.Asr(r5 * 527 + 23, 6);
+    g8 := TMathUtils.Asr(g5 * 527 + 23, 6);
+    b8 := TMathUtils.Asr(b5 * 527 + 23, 6);
+
+    // cheap, not fully accurate conversion
+    //pixel := (byte2 shl 8) or byte1;
+    //b8 := (((pixel) and $001F) shl 3);
+    //g8 := (((pixel) and $07E0) shr 2) and $FF;
+    //r8 := (((pixel) and $F800) shr 8);
+
+    luminances[luminanceIndex] := TMathUtils.Asr(RChannelWeight * r8 + GChannelWeight * g8 +
+                                    BChannelWeight * b8, ChannelWeight);
+    Inc(index, 2);
+    Inc(luminanceIndex);
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceRGB24(
+  const rgbRawBytes: TArray<Byte>);
+var
+  rgbIndex,
+  luminanceIndex,
+  r, g, b : Integer;
+begin
+  rgbIndex := 0;
+  luminanceIndex := 0;
+  while (((rgbIndex < Length(rgbRawBytes)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    // Calculate luminance cheaply, favoring green.
+    r := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    g := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    b := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    luminances[luminanceIndex] := TMathUtils.Asr(RChannelWeight * r + GChannelWeight * g +
+                                    BChannelWeight * b,ChannelWeight);
+    inc(luminanceIndex)
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceBGR24(
+  const rgbRawBytes: TArray<Byte>);
+var
+  rgbIndex,
+  luminanceIndex,
+  b, g, r : Byte;
+begin
+  rgbIndex := 0;
+  luminanceIndex := 0;
+  while (((rgbIndex < Length(rgbRawBytes)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    // Calculate luminance cheaply, favoring green.
+    b := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    g := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    r := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    luminances[luminanceIndex] := TMathUtils.Asr(RChannelWeight * r + GChannelWeight * g +
+                                    BChannelWeight * b,ChannelWeight);
+    Inc(luminanceIndex)
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceRGB32(
+  const rgbRawBytes: TArray<Byte>);
+var
+  rgbIndex,
+  luminanceIndex,
+  r, g, b : Byte;
+begin
+  rgbIndex := 0;
+  luminanceIndex := 0;
+  while (((rgbIndex < Length(rgbRawBytes)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    // Calculate luminance cheaply, favoring green.
+    r := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    g := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    b := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex, 2);
+    luminances[luminanceIndex] := TMathUtils.Asr(RChannelWeight * r + GChannelWeight * g +
+                                    BChannelWeight * b, ChannelWeight);
+    Inc(luminanceIndex);
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceBGR32(
+  const rgbRawBytes: TArray<Byte>);
+var
+  rgbIndex,
+  luminanceIndex,
+  b, g, r : Byte;
+begin
+  rgbIndex := 0;
+  luminanceIndex := 0;
+  while (((rgbIndex < Length(rgbRawBytes)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    // Calculate luminance cheaply, favoring green.
+    b := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    g := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    r := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex, 2);
+    luminances[luminanceIndex] := TMathUtils.Asr(RChannelWeight * r + GChannelWeight * g +
+                                    BChannelWeight * b, ChannelWeight);
+    Inc(luminanceIndex);
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceBGRA32(
+  const rgbRawBytes: TArray<Byte>);
+var
+  rgbIndex,
+  luminanceIndex,
+  b, g, r,
+  alpha : Byte;
+  luminance : Byte;
+begin
+  rgbIndex := 0;
+  luminanceIndex := 0;
+  while (((rgbIndex < Length(rgbRawBytes)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    // Calculate luminance cheaply, favoring green.
+    b := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    g := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    r := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    alpha := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+
+    luminance := TMathUtils.Asr(RChannelWeight * r + GChannelWeight * g +
+                   BChannelWeight * b, ChannelWeight);
+    luminances[luminanceIndex] := (TMathUtils.Asr(luminance * alpha, 8) + TMathUtils.Asr(255 * (255 - alpha), 8));
+    Inc(luminanceIndex);
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceRGBA32(
+  const rgbRawBytes: TArray<Byte>);
+var
+  rgbIndex,
+  luminanceIndex,
+  r, g, b,
+  alpha : Byte;
+  luminance : Byte;
+begin
+  rgbIndex := 0;
+  luminanceIndex := 0;
+  while (((rgbIndex < Length(rgbRawBytes)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    // Calculate luminance cheaply, favoring green.
+    r := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    g := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    b := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    alpha := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+
+    luminance := TMathUtils.Asr(RChannelWeight * r + GChannelWeight * g +
+                   BChannelWeight * b, ChannelWeight);
+    luminances[luminanceIndex] := TMathUtils.Asr(luminance * alpha, 8) + TMathUtils.Asr(255 * (255 - alpha), 8);
+    Inc(luminanceIndex);
+  end;
+end;
+
+procedure TRGBLuminanceSource.CalculateLuminanceARGB32(
+  const rgbRawBytes: TArray<Byte>);
+var
+  rgbIndex,
+  luminanceIndex,
+  r, g, b,
+  alpha : Byte;
+  luminance : Byte;
+begin
+  rgbIndex := 0;
+  luminanceIndex := 0;
+  while (((rgbIndex < Length(rgbRawBytes)) and
+          (luminanceIndex < Length(luminances)))) do
+  begin
+    // Calculate luminance cheaply, favoring green.
+    alpha := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    r := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    g := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+    b := rgbRawBytes[rgbIndex];
+    Inc(rgbIndex);
+
+    luminance := TMathUtils.Asr(RChannelWeight * r + GChannelWeight * g +
+                   BChannelWeight * b, ChannelWeight);
+    luminances[luminanceIndex] := TMathUtils.Asr(luminance * alpha,8) + TMathUtils.Asr(255 * (255 - alpha),8);
+    Inc(luminanceIndex);
+  end;
+end;
+
+function TRGBLuminanceSource.GetBitmapFormat: TBitmapFormat;
+begin
+  try
+    Result := DetermineBitmapFormat(luminances, Width, Height);
+  except
+    Result := TBitmapFormat.Unknown;
+  end;
+end;
+
+end.

android-client/ThirdParty/ZXing/LICENSE

@@ -0,0 +1,202 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
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+

android-client/ThirdParty/ZXing/ZXing.ScanManager.pas

@@ -0,0 +1,185 @@
+unit ZXing.ScanManager;
+
+interface
+
+uses
+  System.SysUtils,
+  System.Generics.Collections,
+{$IFDEF FRAMEWORK_FMX}
+  FMX.Graphics,
+{$ENDIF}
+{$IFDEF FRAMEWORK_VCL}
+  VCL.Graphics,
+{$ENDIF}
+  ZXing.LuminanceSource,
+  ZXing.RGBLuminanceSource,
+  ZXing.InvertedLuminanceSource,
+  ZXing.HybridBinarizer,
+  ZXing.BinaryBitmap,
+  ZXing.MultiFormatReader,
+  ZXing.BarcodeFormat,
+  ZXing.ResultPoint,
+  ZXing.ReadResult,
+  ZXing.DecodeHintType;
+
+type
+  TScanManager = class
+  private
+    FEnableInversion: Boolean;
+    FHints: TDictionary<TDecodeHintType, TObject>;
+    FResultPointEvent: TResultPointCallback;
+    FMultiFormatReader: TMultiFormatReader;
+    listFormats: TList<TBarcodeFormat>;
+
+    function GetMultiFormatReader(const format: TBarcodeFormat)
+      : TMultiFormatReader;
+
+    procedure SetResultPointEvent(const AValue: TResultPointCallback);
+  public
+    destructor Destroy; override;
+
+    function Scan(const pBitmapForScan: TBitmap): TReadResult;
+    constructor Create(const format: TBarcodeFormat;
+      Hints: TDictionary<TDecodeHintType, TObject>);
+
+    property OnResultPoint: TResultPointCallback read FResultPointEvent
+      write SetResultPointEvent;
+  end;
+
+implementation
+
+constructor TScanManager.Create(const format: TBarcodeFormat;
+  Hints: TDictionary<TDecodeHintType, TObject>);
+begin
+  inherited Create;
+  FEnableInversion := False;
+  FHints := Hints;
+  FMultiFormatReader := GetMultiFormatReader(format);
+end;
+
+destructor TScanManager.Destroy;
+var
+  hint: TPair<TDecodeHintType, TObject>;
+  o: TObject;
+begin
+  if Assigned(FHints) then
+  begin
+
+    for hint in FHints do
+    begin
+      o := hint.Value;
+      if Assigned(o) then
+        o.Free;
+    end;
+
+    FHints.Clear();
+    FreeAndNil(FHints);
+  end;
+
+  FreeAndNil(FMultiFormatReader);
+  inherited;
+end;
+
+procedure TScanManager.SetResultPointEvent(const AValue: TResultPointCallback);
+var
+  ahKey: TDecodeHintType;
+  ahValue: TObject;
+begin
+  FResultPointEvent := AValue;
+
+  ahKey := TDecodeHintType.NEED_RESULT_POINT_CALLBACK;
+  if Assigned(FResultPointEvent) then
+  begin
+    ahValue := TResultPointEventObject.Create(FResultPointEvent);
+    FHints.AddOrSetValue(ahKey, ahValue);
+  end
+  else
+  begin
+    if Fhints.TryGetValue(ahKey, ahValue) then
+    begin
+      ahValue.Free;
+      ahValue := nil;
+      FHints.Remove(ahKey);
+    end;
+  end;
+end;
+
+function TScanManager.GetMultiFormatReader(const format: TBarcodeFormat)
+  : TMultiFormatReader;
+var
+  o: TObject;
+
+begin
+  Result := TMultiFormatReader.Create;
+  listFormats := nil;
+
+  if FHints = nil then
+    FHints := TDictionary<TDecodeHintType, TObject>.Create();
+
+  if FHints.ContainsKey(ZXing.DecodeHintType.ENABLE_INVERSION) then
+    FEnableInversion := true;
+
+  if format <> TBarcodeFormat.Auto then
+  begin
+    if (FHints.TryGetValue(ZXing.DecodeHintType.POSSIBLE_FORMATS, o)) then
+      listFormats := o as TList<TBarcodeFormat>
+    else
+    begin
+      listFormats := TList<TBarcodeFormat>.Create();
+      FHints.Add(ZXing.DecodeHintType.POSSIBLE_FORMATS, listFormats);
+    end;
+
+    if (listFormats.Count = 0) then
+      listFormats.Add(format)
+    else
+      listFormats.Insert(0, format); // favor the format parameter
+
+  end;
+
+  Result.Hints := FHints;
+end;
+
+function TScanManager.Scan(const pBitmapForScan: TBitmap): TReadResult;
+var
+  LuminanceSource, InvLuminanceSource: TLuminanceSource;
+  HybridBinarizer: THybridBinarizer;
+  BinaryBitmap: TBinaryBitmap;
+begin
+  InvLuminanceSource := nil;
+  LuminanceSource := nil;
+  HybridBinarizer := nil;
+  BinaryBitmap := nil;
+  try
+
+    LuminanceSource := TRGBLuminanceSource.CreateFromBitmap(pBitmapForScan,
+      pBitmapForScan.Width, pBitmapForScan.Height);
+    HybridBinarizer := THybridBinarizer.Create(LuminanceSource);
+    BinaryBitmap := TBinaryBitmap.Create(HybridBinarizer);
+    Result := FMultiFormatReader.Decode(BinaryBitmap, true);
+
+    if (Result = nil) then
+    begin
+      if (FEnableInversion) then
+      begin
+        if (BinaryBitmap <> nil) then
+          FreeAndNil(BinaryBitmap);
+
+        if (HybridBinarizer <> nil) then
+          FreeAndNil(HybridBinarizer);
+
+        InvLuminanceSource := LuminanceSource.invert();
+        HybridBinarizer := THybridBinarizer.Create(InvLuminanceSource);
+        BinaryBitmap := TBinaryBitmap.Create(HybridBinarizer);
+        Result := FMultiFormatReader.Decode(BinaryBitmap, true);
+
+      end;
+    end;
+  finally
+    BinaryBitmap.Free;
+    HybridBinarizer.Free;
+    InvLuminanceSource.Free;
+    LuminanceSource.Free;
+  end;
+end;
+
+end.

android-client/build-apk.ps1

@@ -70,6 +70,15 @@ $log | Select-String -Pattern 'lines,' | ForEach-Object { $_.Line.Trim() }
 New-Item -ItemType Directory -Force -Path "$stage",
     "$stage\classes", "$stage\library\lib\arm64-v8a" | Out-Null
 Copy-Item "$out\AndroidManifest.xml" "$stage\AndroidManifest.xml" -Force
+# DELPHI MET android:debuggable="true" MEME EN RELEASE, et l'APK livre le
+# portait. Sur un telephone ou le debogage USB est actif, `adb run-as` ouvre
+# alors le dossier prive de l'application - donc vault.bin et les reglages -
+# sans acces root. On le force a faux pour une release, et seulement la.
+if ($Release) {
+    $mf = Get-Content "$stage\AndroidManifest.xml" -Raw
+    $mf = $mf -replace 'android:debuggable="true"', 'android:debuggable="false"'
+    Set-Content "$stage\AndroidManifest.xml" -Value $mf -Encoding utf8
+}
 Copy-Item "$out\pmserverApk.classes\*.dex" "$stage\classes\" -Force
 & $strip --strip-debug -o "$stage\library\lib\arm64-v8a\libpmserverApk.so" "$out\libpmserverApk.so"
 

android-client/repack-apk.ps1

@@ -7,7 +7,7 @@
 # ne peuvent y arriver autrement. On laisse Deploy faire son travail, puis on
 # remet ce qu'il a efface et on refait aapt / zipalign / signature.
 #
-# A lancer depuis la racine du depot, apres un Deploy reussi.
+# A lancer apres un Deploy reussi, depuis n'importe quel dossier.
 #
 #   -Config Release            empaquette la sortie Release au lieu de Debug
 #   -Keystore <chemin> -Alias  signe avec CETTE cle au lieu de celle de debogage
@@ -30,7 +30,12 @@ $sdk  = 'C:\Users\Public\Documents\Embarcadero\Studio\23.0\CatalogRepository\And
 $bds  = 'C:\Program Files (x86)\Embarcadero\Studio\23.0'
 $jdk  = 'C:\Program Files\Eclipse Adoptium\jdk-11.0.15.10-hotspot'
 $pac  = "$bds\bin\paclient.exe"
-$p    = ".\Android64\$Config\pmserverApk"
+# ANCRE SUR LE DEPOT, PAS SUR LE DOSSIER COURANT. Ces chemins etaient relatifs
+# (".\Android64\...") : lance depuis ailleurs que la racine, le script
+# empaquetait un dossier qui n'existait pas et semait des copies de ressources
+# dans le repertoire courant — la compilation, elle, allait bien au depot.
+$repo = Split-Path $PSScriptRoot -Parent
+$p    = "$repo\Android64\$Config\pmserverApk"
 
 # 0. LES RESSOURCES QUE LA COMPILATION GENERE, MISES EN PLACE A LA MAIN.
 #
@@ -62,7 +67,7 @@ $genRes = @{
     'splash_image_def.xml'    = 'drawable\splash_image_def.xml'
     'splash_image_def-v21.xml'= 'drawable-anydpi-v21\splash_image_def.xml'
 }
-$outDir = ".\Android64\$Config"
+$outDir = "$repo\Android64\$Config"
 foreach ($k in $genRes.Keys) {
     $src = "$outDir\$k"
     if (-not (Test-Path $src)) { continue }   # Delphi ne genere pas tout partout

android-client/web/app.html

@@ -161,6 +161,11 @@
   .btn:active { opacity: .62; }
   .btn.wide { padding: 13px 18px; font-size: 15px; }
   .btn.main { background: var(--accent); }
+  .btn:disabled { opacity: .45; }
+  .opt { display: flex; gap: 12px; align-items: center; margin: 10px 4px;
+         font-size: 15px; }
+  .opt input { width: 22px; height: 22px; accent-color: #22d3ee; flex: none; }
+  .field-in:disabled { opacity: .5; }
   /* Rouge sourd : assez pour qu'on ne le confonde pas avec Copy, pas assez
      pour attirer l'oeil sur la seule action irreversible de l'ecran. */
   .btn.danger { background: rgba(220, 80, 80, .30); }
@@ -177,6 +182,9 @@
                     besoin d'etre visible pour exister. */
                  background: none; }
   .btn.ico-btn svg { width: 22px; height: 22px; }
+  /* LA FLECHE DE RETOUR, EN GRAND : c'est le geste le plus frequent de
+     l'app, et un caractere fleche de police restait minuscule. */
+  .btn.back-btn svg { width: 30px; height: 30px; }
   /* Le retour d'appui ne peut plus venir du fond : il vient du trait. */
   .btn.ico-btn:active { opacity: .45; }
   /* Le point des modifications en attente. Sur le cadenas parce qu'il est
@@ -276,7 +284,7 @@
   /* UN REFUS N'EST PAS UN ETAT. "Master password: 8 characters at least" se
      lisait du meme gris que "Vault on this device" - on ne voyait pas que
      l'application venait de refuser quelque chose. */
-  .status.err { color: #ff9d9d; }
+  .status.err, .sheet .note.err { color: #ff9d9d; }
   .stack { display: flex; flex-direction: column; gap: 8px; }
   /* L'espace de 8 px vit A L'INTERIEUR de chaque pile. Deux piles voisines se
      touchaient donc, et "Create vault" collait a "Download vault" alors que
@@ -296,7 +304,13 @@
     border: 0; border-radius: var(--radius-s);
     background: rgba(255,255,255,.10); color: var(--text);
     font: inherit; outline: none;
+    /* Le body interdit la selection (user-select: none) et les champs en
+       HERITAIENT : le curseur ne suivait pas le doigt et le texte ne defilait
+       jamais - la fin d'une URL longue restait hors d'atteinte. */
+    -webkit-user-select: text; user-select: text;
   }
+  .field-in.multi { height: auto; min-height: 46px; overflow: hidden; padding: 12px 44px 12px 14px; resize: none;
+                   line-height: 1.35; word-break: break-all; display: block; }
   .field-in::placeholder { color: var(--muted); }
   /* La fleche dit si le panneau est deplie, et de quel bouton il descend. */
   .chev { display: inline-block; margin-left: 6px; font-size: 11px;
@@ -316,7 +330,10 @@
      des que le margin disparaissait. Le bord INFERIEUR, lui, est celui que le
      champ touche dans les deux cas - le margin est au-dessus. */
   .in-x {
-    position: absolute; right: 0; bottom: 0; width: 44px; height: 46px;
+    /* 32 px pour 44 px de marge : les 12 px entre le texte et la croix
+       recoivent le toucher, qui pose le curseur en fin de texte au lieu
+       d'effacer le champ. */
+    position: absolute; right: 0; bottom: 0; width: 32px; height: 46px;
     display: flex; align-items: center; justify-content: center;
     color: var(--muted); font-size: 22px;
   }
@@ -395,6 +412,9 @@
 
     <div class="stack">
       <button class="btn wide main" id="btnOpen">&#10140;&nbsp; Open vault</button>
+      <!-- LA SORTIE DE SECOURS DU VERROUILLAGE D'ECRAN : empreinte refusee,
+           schema oublie - le mot de passe du coffre ouvre toujours. -->
+      <button class="btn wide" id="btnUsePwd" hidden>Use the vault password</button>
       <button class="btn wide" id="btnSync">&#8635;&nbsp; Sync</button>
       <!-- UN SEUL BOUTON, ET IL NE MENT PAS SUR SA DESTINATION.
            Il y en avait deux, "Settings" et "Log", et le second a fini par
@@ -537,7 +557,7 @@
 
 <div class="screen" id="detail">
   <div class="head">
-    <button class="btn" id="back">&#8592;</button>
+    <button class="btn ico-btn back-btn" id="back"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round" aria-label="Back" role="img"><path d="M20 12H5M11 5l-7 7 7 7"/></svg></button>
     <h1 id="dtitle"></h1>
     <button class="btn ico-btn" id="kebab" aria-label="Entry menu"></button>
   </div>
@@ -551,15 +571,20 @@
      nature differente sur l'ecran ou l'on veut surtout ouvrir son coffre. -->
 <div class="sheet" id="settings">
   <div class="head">
-    <button class="btn" id="setBack">&#8592;</button>
+    <button class="btn ico-btn back-btn" id="setBack"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round" aria-label="Back" role="img"><path d="M20 12H5M11 5l-7 7 7 7"/></svg></button>
     <h1>Settings</h1>
   </div>
   <div class="scroll">
     <h2>Repository</h2>
+    <div class="note err" id="sRepoErr" hidden></div>
     <div class="in-wrap">
-      <input class="field-in" id="sUrl" placeholder="endpoint URL"
+      <!-- ZONE DE TEXTE ET NON input : l'URL passe a la ligne et se lit en
+           entier. Un input d'une ligne ne defilait pas sous le doigt dans la
+           WebView de l'app, et la fin d'une URL d'API restait inatteignable. -->
+      <textarea class="field-in multi" id="sUrl" rows="1"
+             placeholder="repository URL - Gitea or github.com/owner/repo (private)"
              autocomplete="off" autocorrect="off" autocapitalize="none"
-             spellcheck="false" inputmode="url">
+             spellcheck="false" inputmode="url"></textarea>
       <div class="in-x" data-clear="sUrl">&#215;</div>
     </div>
     <div class="in-wrap">
@@ -572,35 +597,49 @@
              type="password" autocomplete="off">
       <div class="in-x" data-clear="sPwd">&#215;</div>
     </div>
+    <button class="btn wide" id="sScan">Scan the QR shown on the PC</button>
+    <button class="btn wide" id="sSave" disabled>Save</button>
     <div class="note">The sync password never leaves this device. It is what
       encrypts the copy kept in the repository, so it must be the same on every
-      device that shares it; the token only opens the repository. It is not the
+      device that shares it; the token only opens the repository. It is asked
-      password that opens a vault created on this phone - that one is asked for
+      for once: afterwards the vault opens with the phone screen lock, an app
-      on the home screen.</div>
+      code, or this password - your choice, under <b>Unlock with</b><span
+      id="sUnlockHint"></span>.</div>
 
     <!-- COFFRE FERME, SECTION CACHEE. Poser comme retirer un code exigent le
          clair en main : les deux ne pourraient que refuser, et proposer une
          action qui refuse toujours vaut moins que ne rien proposer. -->
     <div id="secCode" hidden>
-    <h2>Unlock code</h2>
+    <h2>Unlock with</h2>
+    <!-- TROIS FACONS D'OUVRIR, UNE SEULE COPIE LOCALE. Le coffre lui-meme n'est
+         jamais touche : seul le scellement de la copie rapide change. Le champ
+         sert a tout - nouveau code, mot de passe du coffre, ou code courant
+         pour revenir au verrouillage d'ecran (retirer une protection demande
+         de la connaitre). -->
     <div class="in-wrap">
-      <input class="field-in" id="sPinNew" placeholder="new unlock code or password"
+      <input class="field-in" id="sPinNew" placeholder="code or password"
              type="password" autocomplete="off">
       <div class="in-x" data-clear="sPinNew">&#215;</div>
     </div>
-    <button class="btn wide" id="sPinSet">Set this code</button>
+    <button class="btn wide" id="sModeDevice">Screen lock (fingerprint, pattern...)</button>
-    <!-- Le champ ci-dessus sert aux deux : le NOUVEAU code pour "Set", le code
+    <button class="btn wide" id="sModeCode">App code (type it above)</button>
-         COURANT pour "Remove". Retirer une protection demande de la connaitre,
+    <button class="btn wide" id="sModePwd">Vault password (type it above)</button>
-         sinon quiconque trouve le telephone ouvert la leve en deux appuis. -->
+    <div class="note" id="sModeNote"></div>
-    <button class="btn wide danger" id="sPinClear">Remove the unlock code</button>
-    <div class="note">To remove the code, type the current one above first.
-      The code seals the copy kept on this device. It can be
-      digits or a full password - a longer one is harder to guess, and it is
-      asked for only when the vault opens. Removing it leaves the vault
-      readable by anyone holding the phone unlocked.</div>
     </div>
 
-    <h2>Diagnostics</h2>
+    <!-- LE TITRE SUIT SON BOUTON : sans lui, une release affichait
+         "Diagnostics" au-dessus de rien. -->
+    <h2>Copy and search</h2>
+    <label class="opt"><input type="checkbox" id="sBack">
+      Hide Vault after copying (may show the home screen)</label>
+    <label class="opt"><input type="checkbox" id="sKbd">
+      Open the keyboard on the search when the vault opens</label>
+    <div class="note">To jump back to the app you came from, use Android's own
+      gesture: swipe along the bottom bar, or tap the recent-apps button twice.
+      After a copy the vault stays open for 2 minutes in the background, time
+      to paste the username and come back for the password.</div>
+
+    <h2 id="sDiagH">Diagnostics</h2>
     <button class="btn wide" id="sLog">Show the log</button>
     <!-- LE JOURNAL EST ICI, PAS SUR L'ACCUEIL. Il y vivait, et depuis que les
          reglages sont un ecran on l'y atteignait par un bouton qui refermait
@@ -633,7 +672,7 @@
      apres qu'on a fini de les lire. -->
 <div class="sheet" id="history">
   <div class="head">
-    <button class="btn" id="histBack">&#8592;</button>
+    <button class="btn ico-btn back-btn" id="histBack"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.4" stroke-linecap="round" stroke-linejoin="round" aria-label="Back" role="img"><path d="M20 12H5M11 5l-7 7 7 7"/></svg></button>
     <h1>Previous passwords</h1>
   </div>
   <div class="scroll"><div id="histBody"></div></div>
@@ -722,7 +761,8 @@ var vaultOpen = false;
 // en dernier - c'est l'ordre des frequences, pas celui du code. La creation
 // etait en tete parce que son bloc etait ecrit en premier dans la page.
 function syncAuthbox() {
-  document.getElementById('authbox').hidden = (authMode === 'open');
+  document.getElementById('authbox').hidden =
+    (authMode === 'open') || (authMode === 'download');
   // L'ACCENT SUIT LE GESTE ATTENDU. Creer un coffre neuf le portait alors qu'un
   // depot est configure - c'est-a-dire exactement le mauvais geste. Il revient
   // a celui qui vient chercher le coffre, et ne reste sur la creation que
@@ -762,6 +802,8 @@ document.getElementById('settings').addEventListener('click', function (ev) {
   if (!id) return;
   var el = document.getElementById(id);
   el.value = '';
+  if (el.classList.contains('multi')) autoGrow(el);
+  syncSaveBtn(false);
   el.focus();
 });
 
@@ -877,6 +919,10 @@ function renderRows() {
           + (e.sub ? '<span>' + esc(e.sub) + '</span>' : '') + '</div>'
           + (e.hasUser ? '<button class="btn ico-btn" data-copy="user">'
                        + ico('user', 'Copy username') + '</button>' : '')
+          // LE CODE 2FA A PORTEE DE POUCE, comme l'identifiant et le mot de
+          // passe : il fallait ouvrir l'entree pour le copier.
+          + (e.hasTotp ? '<button class="btn ico-btn" data-copy="rtotp">'
+                       + ico('clock', 'Copy 2FA code') + '</button>' : '')
           + '<button class="btn ico-btn" data-copy="pwd">'
           + (e.isNote ? ico('note', 'Copy text') : ico('key', 'Copy password'))
           + '</button></div>';
@@ -959,6 +1005,10 @@ var ICONS = {
   dots: '<circle cx="12" cy="5" r="1.4"/><circle cx="12" cy="12" r="1.4"/>'
       + '<circle cx="12" cy="19" r="1.4"/>',
   check: '<path d="M4 12.5l5.5 5.5L20 7"/>',
+  clock: '<circle cx="12" cy="12" r="8.5"/><path d="M12 7.5V12l3 2"/>',
+  dice: '<rect x="4" y="4" width="16" height="16" rx="3"/>'
+      + '<circle cx="9" cy="9" r="1.2"/><circle cx="15" cy="15" r="1.2"/>'
+      + '<circle cx="15" cy="9" r="1.2"/><circle cx="9" cy="15" r="1.2"/>',
   close: '<path d="M6 6l12 12M18 6L6 18"/>',
   // Un arc, pas un cercle : c'est l'ouverture qui rend la rotation visible.
   loader: '<path d="M12 3a9 9 0 019 9"/>',
@@ -1029,6 +1079,15 @@ document.getElementById('fields').addEventListener('click', function (ev) {
   // Meme raison que dans la liste : le dessin recoit l'appui, le bouton porte
   // l'intention. Tout ce qui suit lit et ecrit sur le bouton.
   var t = ev.target.closest('button') || ev.target;
+  var gen = t.getAttribute('data-gen');
+  if (gen) {
+    // Visible une fois tire : on garde ce qu'on voit, pas une suite de points.
+    var gi = document.getElementById(gen);
+    gi.value = genPassword(20);
+    gi.type = 'text';
+    send('touch');
+    return;
+  }
   var k = t.getAttribute('data-show');
   if (k !== null) {
     var cell = document.querySelector('[data-v="' + k + '"]');
@@ -1185,6 +1244,7 @@ function openEditor(k) {
   var line = row.parentNode;
   line.classList.toggle('wrap', !!detailRows[k].m);
   line.innerHTML = editorControl(k)
+    + (editField === 'password' ? genButton('editval') : '')
     // Show n'a de sens que sur un champ masque. Sur un site en clair il
     // n'aurait rien a reveler - et l'inverse : il le CACHERAIT.
     //
@@ -1333,6 +1393,25 @@ function newField(id, label, rowId) {
 /// sanitisation de HTML et retire les retours a la ligne : on pouvait lire et
 /// modifier du multiligne, mais pas en creer - il fallait creer la note puis
 /// l'ouvrir pour la mettre en forme.
+/// MOT DE PASSE ALEATOIRE, tire de crypto.getRandomValues. Rejet des octets
+/// au-dela du dernier multiple de la taille du jeu : un simple modulo
+/// favoriserait les premiers caracteres.
+var GEN_CHARS = 'ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz23456789'
+              + '!@#$%^&*-_=+?';
+function genPassword(n) {
+  var out = '', buf = new Uint8Array(1),
+      lim = 256 - (256 % GEN_CHARS.length);
+  while (out.length < (n || 20)) {
+    crypto.getRandomValues(buf);
+    if (buf[0] < lim) out += GEN_CHARS.charAt(buf[0] % GEN_CHARS.length);
+  }
+  return out;
+}
+function genButton(target) {
+  return '<button class="btn ico-btn" data-gen="' + target + '">'
+       + ico('dice', 'Generate') + '</button>';
+}
+
 function newBodyControl(kind) {
   if (kind === 'note')
     return '<textarea class="field-in" id="nPwd" rows="6" enterkeyhint="enter"'
@@ -1340,7 +1419,7 @@ function newBodyControl(kind) {
          + ';height:auto;padding:10px 14px;resize:vertical"></textarea>';
   return '<input class="field-in" id="nPwd" type="text" autocomplete="off"'
        + ' autocorrect="off" autocapitalize="none" spellcheck="false"'
-       + ' style="' + FIELD_STYLE + '">';
+       + ' style="' + FIELD_STYLE + '">' + genButton('nPwd');
 }
 
 function openNewEntry() {
@@ -1606,23 +1685,115 @@ document.addEventListener('click', function (ev) {
 // LES REGLAGES. Ils lisent et ecrivent les MEMES champs que l'accueil - la
 // page n'en garde qu'une copie, Delphi reste la seule source.
 function openSettings() {
-  document.getElementById('sUrl').value = elUrl.value;
+  document.getElementById('sUrl').value = shortRepoUrl(elUrl.value);
   document.getElementById('sTok').value = elTok.value;
   document.getElementById('sPwd').value = elPwd.value;
   document.getElementById('sPinNew').value = '';
   document.getElementById('secCode').hidden = !vaultOpen;
+  document.getElementById('sRepoErr').hidden = true;
+  // UN COFFRE EXISTE MAIS EST FERME : le mot de passe de synchro ne se change
+  // pas d'ici. Il ne vit que dans le coffre scelle, et seul un coffre ouvert
+  // permet de le verifier puis de l'y ranger - tape coffre ferme, il etait
+  // perdu a la fermeture de l'app.
+  var sp = document.getElementById('sPwd'),
+      locked = (authMode === 'open' || authMode === 'login') && !vaultOpen;
+  sp.disabled = locked;
+  sp.placeholder = locked ? 'saved in the vault - open it to see or change it'
+                          : 'sync password';
+  cfgBase = cfgNow();
+  syncSaveBtn(false);
+  // La section n'existe que coffre ouvert : le dire tant qu'elle manque, et se
+  // taire quand elle est juste en dessous.
+  document.getElementById('sUnlockHint').textContent =
+    vaultOpen ? ' below' : ', which appears in these settings once the vault is open';
   showLog(false);
   document.body.classList.add('on-settings');
+  autoGrow(document.getElementById('sUrl'));   // mesurable seulement une fois affiche
   send('state?view=settings');
 }
 
-function closeSettings() {
+// ENREGISTRER EST UN GESTE, FERMER N'ENREGISTRE RIEN. Fermer enregistrait :
-  // Ce qui a ete tape ici redescend vers Delphi avant de fermer, sinon un
+// une URL effacee par erreur partait avec le retour, sans moyen de revenir.
-  // reglage modifie puis referme sans quitter le champ serait perdu.
+// Desormais retour = annuler, et la page repart des valeurs enregistrees.
-  elUrl.value = document.getElementById('sUrl').value.trim();
+// SAVE NE S'ALLUME QUE SI QUELQUE CHOSE A CHANGE, compare aux valeurs
+// enregistrees et non a la derniere frappe : taper un caractere puis l'effacer
+// le rend de nouveau inactif. Apres un Save : coche, inactif, nouvelle base.
+var cfgBase = '';
+function cfgNow() {
+  return JSON.stringify([document.getElementById('sUrl').value.trim(),
+                         document.getElementById('sTok').value.trim(),
+                         document.getElementById('sPwd').value]);
+}
+function syncSaveBtn(justSaved) {
+  var b = document.getElementById('sSave'), dirty = cfgNow() !== cfgBase;
+  b.disabled = !dirty;
+  b.classList.toggle('main', dirty);
+  b.textContent = (!dirty && justSaved) ? String.fromCharCode(0x2713) + '  Saved' : 'Save';
+}
+['sUrl', 'sTok', 'sPwd'].forEach(function (id) {
+  document.getElementById(id).addEventListener('input', function () { syncSaveBtn(false); });
+});
+
+// L'ADRESSE DU DEPOT TELLE QUE LE NAVIGATEUR L'AFFICHE suffit :
+// https://git.example.com/OWNER/REPO (ou .../src/branch/main/FICHIER) devient
+// l'URL de l'API des contenus. Une URL d'API ou d'endpoint PHP passe telle quelle,
+// et une forme non reconnue aussi - Sync dira alors ce qui ne va pas.
+// LA ZONE DE L'URL PREND LA HAUTEUR DE SON TEXTE : une ligne pour une adresse
+// courte, davantage si elle passe a la ligne.
+function autoGrow(el) {
+  el.style.height = 'auto';
+  el.style.height = el.scrollHeight + 'px';
+}
+document.addEventListener('input', function (ev) {
+  if (ev.target.classList && ev.target.classList.contains('multi')) autoGrow(ev.target);
+});
+
+// L'inverse, pour l'affichage : l'URL d'API se relit comme l'adresse du depot.
+function shortRepoUrl(u) {
+  var g = /^https:\/\/api\.github\.com\/repos\/([^\/]+)\/([^\/]+)\/contents\/(.+)$/i.exec(u || '');
+  if (g) return 'https://github.com/' + g[1] + '/' + g[2] +
+                (g[3] === 'vault-sync.json' ? '' : '/blob/main/' + g[3]);
+  var m = /^(https?:\/\/[^\/]+)\/api\/v1\/repos\/([^\/]+)\/([^\/]+)\/contents\/(.+)$/i.exec(u || '');
+  if (!m) return u;
+  return m[1] + '/' + m[2] + '/' + m[3] +
+         (m[4] === 'vault-sync.json' ? '' : '/src/branch/main/' + m[4]);
+}
+function normalizeRepoUrl(u) {
+  u = u.replace(/\s+/g, '');
+  if (!u || /\/api\/v1\/repos\//i.test(u) || /api\.github\.com\/repos\//i.test(u) ||
+      /\.php(\?|$)/i.test(u)) return u;
+  // GITHUB : l'adresse du depot est sur github.com, l'API sur api.github.com.
+  var g = u.match(/^https?:\/\/(www\.)?github\.com\/([^\/]+)\/([^\/]+?)(?:\.git)?(?:\/blob\/[^\/]+\/(.+?))?\/?$/i);
+  if (g) return 'https://api.github.com/repos/' + g[2] + '/' + g[3] +
+                '/contents/' + (g[4] || 'vault-sync.json');
+  var m = u.match(/^(https?:\/\/[^\/]+)\/([^\/]+)\/([^\/]+?)(?:\.git)?(?:\/src\/branch\/[^\/]+\/(.+?))?\/?$/i);
+  if (!m) return u;
+  return m[1] + '/api/v1/repos/' + m[2] + '/' + m[3] + '/contents/' + (m[4] || 'vault-sync.json');
+}
+// Pas de Save pour ces deux-la : une case se voit cochee, elle s'applique.
+['sBack', 'sKbd'].forEach(function (id) {
+  document.getElementById(id).addEventListener('change', function () {
+    send('uipref?back=' + (document.getElementById('sBack').checked ? '1' : '0')
+       + '&kbd=' + (document.getElementById('sKbd').checked ? '1' : '0'));
+  });
+});
+document.getElementById('sScan').addEventListener('click', function () {
+  send('scanqr');
+});
+document.getElementById('sSave').addEventListener('click', function () {
+  var sUrl = document.getElementById('sUrl');
+  elUrl.value = normalizeRepoUrl(sUrl.value);
+  sUrl.value = shortRepoUrl(elUrl.value);
+  autoGrow(sUrl);
   elTok.value = document.getElementById('sTok').value.trim();
   elPwd.value = document.getElementById('sPwd').value;
   pushConfig();
+  document.getElementById('sRepoErr').hidden = true;
+  cfgBase = cfgNow();
+  syncSaveBtn(true);
+});
+
+function closeSettings() {
   document.body.classList.remove('on-settings');
   send('state?view=' + view);
 }
@@ -1648,14 +1819,56 @@ document.getElementById('histBody').addEventListener('click', function (ev) {
 document.getElementById('sLog').addEventListener('click', function () {
   showLog(document.getElementById('log').hidden);
 });
-document.getElementById('sPinSet').addEventListener('click', function () {
+// FACON D'OUVRIR. Delphi dit laquelle est en place (PM.setUnlockMode) ; chaque
-  var v = document.getElementById('sPinNew').value;
+// bouton envoie la commande qui existe deja pour la poser. Revenir au
-  if (!v) { toast('Type a code first'); return; }
+// verrouillage d'ecran, c'est retirer le code : il faut donc le code courant.
-  // DEMANDE EXPLICITE, EFFET IMMEDIAT. Le code ne se depose plus dans un champ
+var unlockMode = 'none', canDeviceLock = false, hasContainer = false;
-  // que l'ouverture suivante appliquerait : Delphi refuse si le coffre n'est
+function syncUnlockUi() {
-  // pas ouvert, ce qui prouve que le code courant est connu.
+  var pw = hasContainer ? 'vault password' : 'sync password';
+  document.getElementById('sModePwd').dataset.label =
+    pw.charAt(0).toUpperCase() + pw.slice(1) + ' (type it above)';
+  ['device', 'code', 'password'].forEach(function (m) {
+    var id = { device: 'sModeDevice', code: 'sModeCode', password: 'sModePwd' }[m];
+    var b = document.getElementById(id), on = unlockMode === m;
+    if (!b.dataset.label) b.dataset.label = b.textContent;
+    b.textContent = (on ? String.fromCharCode(0x2713) + '  ' : '') + b.dataset.label;
+    b.classList.toggle('main', on);
+  });
+  document.getElementById('sModeDevice').style.opacity = canDeviceLock ? 1 : .4;
+  document.getElementById('sModeNote').textContent =
+    { device: 'Now: screen lock. Changing the screen lock or adding a fingerprint never deletes the vault.',
+      code: 'Now: app code. To go back to the screen lock, type the current code above.',
+      password: 'Now: ' + pw + '. To go back to the screen lock, type it above.',
+      none: 'Now: no protection - anyone holding the phone unlocked can open the vault.' }[unlockMode]
+    + (canDeviceLock ? '' : ' This phone has no screen lock.');
+  document.getElementById('btnUsePwd').hidden =
+    !(authMode === 'open' && unlockMode === 'device' && hasContainer);
+}
+function modeField() {
+  var el = document.getElementById('sPinNew'), v = el.value;
+  el.value = '';
+  return v;
+}
+document.getElementById('sModeCode').addEventListener('click', function () {
+  var v = modeField();
+  if (!v) { toast('Type the new code above first'); return; }
   send('pinset?c=' + encodeURIComponent(v));
-  document.getElementById('sPinNew').value = '';
+});
+document.getElementById('sModePwd').addEventListener('click', function () {
+  var v = modeField();
+  if (!v) { toast('Type the ' + (hasContainer ? 'vault' : 'sync') + ' password above first'); return; }
+  send('pinset?pw=1&c=' + encodeURIComponent(v));
+});
+document.getElementById('sModeDevice').addEventListener('click', function () {
+  if (!canDeviceLock) { toast('No screen lock on this phone - set one in Android settings first'); return; }
+  if (unlockMode === 'device') { toast('Already using the screen lock'); return; }
+  var v = modeField();
+  if (!v && unlockMode !== 'none') { toast('Type the current code or password above first'); return; }
+  send('pinclear?c=' + encodeURIComponent(v));
+});
+document.getElementById('btnUsePwd').addEventListener('click', function () {
+  PM.setAuthMode('login');
+  document.getElementById('pass').focus();
 });
 document.getElementById('sWipe').addEventListener('click', function (ev) {
   // DEUX APPUIS, comme pour retirer le code : un effacement sans retour ne se
@@ -1675,27 +1888,6 @@ document.getElementById('sWipe').addEventListener('click', function (ev) {
   send('wipelocal');
   closeSettings();
 });
-document.getElementById('sPinClear').addEventListener('click', function (ev) {
-  var b = ev.currentTarget;
-  if (b.getAttribute('data-armed') === null) {
-    b.setAttribute('data-armed', '1');
-    b.textContent = 'Really remove - tap again';
-    setTimeout(function () {
-      b.removeAttribute('data-armed');
-      b.textContent = 'Remove the unlock code';
-    }, 4000);
-    return;
-  }
-  b.removeAttribute('data-armed');
-  b.textContent = 'Remove the unlock code';
-  // LE CODE COURANT VOYAGE AVEC LA DEMANDE. Le coffre ouvert ne prouve rien :
-  // il peut l'etre depuis une heure et rester a l'ecran. Delphi compare a ce
-  // sous quoi le cache est reellement scelle, et refuse sinon.
-  send('pinclear?c=' + encodeURIComponent(
-    document.getElementById('sPinNew').value));
-  document.getElementById('sPinNew').value = '';
-});
-
 function goList() {
   closeMenu();
   document.body.classList.remove('on-detail');
@@ -1710,6 +1902,21 @@ document.getElementById('back').addEventListener('click', goList);
 
 // --- appele par Delphi -----------------------------------------------------
 var PM = {
+  /// Reglages d'usage, relus au demarrage (Delphi en garde le fichier).
+  setUiPrefs: function (back, kbd) {
+    document.getElementById('sBack').checked = back;
+    document.getElementById('sKbd').checked = kbd;
+  },
+
+  /// Recherche prete a taper : focus, texte precedent selectionne (la frappe le
+  /// remplace), puis Delphi deplie le clavier - un focus() seul ne le fait pas.
+  focusSearch: function () {
+    if (view !== 'list') return;
+    q.focus();
+    q.select();
+    send('kbd');
+  },
+
   setVault: function (json) {
     vaultOpen = true;
     var d = JSON.parse(json);
@@ -1751,6 +1958,13 @@ var PM = {
     document.body.classList.remove('on-list', 'on-detail', 'searching');
     view = 'unlock';
   },
+  /// Erreur de depot, affichee dans les reglages au-dessus des champs a corriger.
+  settingsError: function (msg) {
+    var e = document.getElementById('sRepoErr');
+    e.textContent = msg;
+    e.hidden = false;
+  },
+
   setStatus: function (text, err) {
     var s = document.getElementById('status');
     s.textContent = text;
@@ -1774,6 +1988,17 @@ var PM = {
   /// Ils ne s'affichent plus - le panneau repliable a cede la place au voile -
   /// mais c'est toujours d'eux que part pushConfig, et Delphi ne connait qu'eux.
   /// Les vider ferait perdre la configuration a la premiere synchronisation.
+  /// Reglages lus dans le QR du poste : ils remplissent les champs, Save valide.
+  pasteConfig: function (url, tok) {
+    var u = document.getElementById('sUrl');
+    u.value = shortRepoUrl(url);
+    autoGrow(u);
+    document.getElementById('sTok').value = tok;
+    syncSaveBtn(false);
+    toast('URL and token pasted - type the sync password, then Save');
+    document.getElementById('sPwd').focus();
+  },
+
   setConfig: function (url, tok, pwd, show) {
     // elPin volontairement absent : rien ne le restaure, jamais.
     elUrl.value = url; elTok.value = tok; elPwd.value = pwd;
@@ -1800,10 +2025,12 @@ var PM = {
     // journal a demenage, et l'accueil n'en porte plus. Le geste qui le ramene
     // ne change pas - un appui long sur la ligne d'etat.
     document.getElementById('sLog').hidden = true;
+    document.getElementById('sDiagH').hidden = true;
     var st = document.getElementById('status'), timer = null;
     st.addEventListener('touchstart', function () {
       timer = setTimeout(function () {
         document.getElementById('sLog').hidden = false;
+        document.getElementById('sDiagH').hidden = false;
         toast('Log available');
       }, 1500);
     });
@@ -1826,6 +2053,12 @@ var PM = {
     syncPinbox();
     document.getElementById('btnAuth').textContent =
       (mode === 'register') ? 'Create vault' : 'Sign in';
+    syncUnlockUi();
+  },
+
+  setUnlockMode: function (mode, canDevice, container) {
+    unlockMode = mode; canDeviceLock = canDevice; hasContainer = container;
+    syncUnlockUi();
   },
 
   setPinNeeded: function (on) {

css/style.css

@@ -293,6 +293,11 @@ input[type="range"]::-webkit-slider-thumb {
     color: var(--text);
     box-shadow: 0 1px 3px rgba(0,0,0,0.1);
 }
+/* Invisibles MAIS presents tant que la 2e couche de licence n'a pas repondu
+   (applyRegisterVisibility) : visibles par defaut, ils laissaient voir Register
+   quelques millisecondes avant d'etre masques. visibility et non display : la
+   place reste reservee, donc rien ne saute quand ils apparaissent. */
+.auth-tabs.is-pending { visibility: hidden; }
 .auth-form { display: flex; flex-direction: column; }
 .auth-form .btn-block { margin-top: 8px; }
 

delphi-backend/PMServer.dpr

@@ -22,6 +22,8 @@ uses
   PM.UserPrefs in 'Source\PM.UserPrefs.pas',
   PM.MachineId in 'Source\PM.MachineId.pas',
   PM.Licence in 'Source\PM.Licence.pas',
+  PM.LicenceGate in 'Source\PM.LicenceGate.pas',
+  DelphiZXingQRCode in 'Source\DelphiZXingQRCode.pas',
   PM.AutoStart in 'Source\PM.AutoStart.pas',
   PM.Favicon in 'Source\PM.Favicon.pas',
   PM.ProcessLockdown in 'Source\PM.ProcessLockdown.pas',

delphi-backend/PMServer.dproj

@@ -49,6 +49,12 @@
         <Cfg_1>true</Cfg_1>
         <Base>true</Base>
     </PropertyGroup>
+    <PropertyGroup Condition="('$(Platform)'=='Win64' and '$(Cfg_1)'=='true') or '$(Cfg_1_Win64)'!=''">
+        <Cfg_1_Win64>true</Cfg_1_Win64>
+        <CfgParent>Cfg_1</CfgParent>
+        <Cfg_1>true</Cfg_1>
+        <Base>true</Base>
+    </PropertyGroup>
     <PropertyGroup Condition="'$(Config)'=='Debug' or '$(Cfg_2)'!=''">
         <Cfg_2>true</Cfg_2>
         <CfgParent>Base</CfgParent>
@@ -157,6 +163,11 @@
         <UWP_DelphiLogo150>$(BDS)\bin\Artwork\Windows\UWP\delphi_UwpDefault_150.png</UWP_DelphiLogo150>
     </PropertyGroup>
     <PropertyGroup Condition="'$(Base_Win64)'!=''">
+        <DCC_Namespace>Winapi;System.Win;Data.Win;Datasnap.Win;Web.Win;Soap.Win;Xml.Win;Bde;$(DCC_Namespace)</DCC_Namespace>
+        <VerInfo_IncludeVerInfo>true</VerInfo_IncludeVerInfo>
+        <VerInfo_Keys>CompanyName=;FileDescription=$(MSBuildProjectName);FileVersion=1.0.0.0;InternalName=;LegalCopyright=;LegalTrademarks=;OriginalFilename=;ProductName=$(MSBuildProjectName);ProductVersion=1.0.0.0;Comments=;ProgramID=com.embarcadero.$(MSBuildProjectName)</VerInfo_Keys>
+        <VerInfo_Locale>1033</VerInfo_Locale>
+        <Manifest_File>$(BDS)\bin\default_app.manifest</Manifest_File>
         <UWP_DelphiLogo44>$(BDS)\bin\Artwork\Windows\UWP\delphi_UwpDefault_44.png</UWP_DelphiLogo44>
         <UWP_DelphiLogo150>$(BDS)\bin\Artwork\Windows\UWP\delphi_UwpDefault_150.png</UWP_DelphiLogo150>
     </PropertyGroup>
@@ -166,6 +177,14 @@
         <DCC_LocalDebugSymbols>false</DCC_LocalDebugSymbols>
         <DCC_SymbolReferenceInfo>0</DCC_SymbolReferenceInfo>
     </PropertyGroup>
+    <PropertyGroup Condition="'$(Cfg_1_Win64)'!=''">
+        <AppDPIAwarenessMode>PerMonitorV2</AppDPIAwarenessMode>
+        <VerInfo_IncludeVerInfo>true</VerInfo_IncludeVerInfo>
+        <VerInfo_Locale>1033</VerInfo_Locale>
+        <Icon_MainIcon>app.ico</Icon_MainIcon>
+        <UWP_DelphiLogo44>app.png</UWP_DelphiLogo44>
+        <UWP_DelphiLogo150>app.png</UWP_DelphiLogo150>
+    </PropertyGroup>
     <PropertyGroup Condition="'$(Cfg_1_Win32)'!=''">
         <AppDPIAwarenessMode>PerMonitorV2</AppDPIAwarenessMode>
         <VerInfo_IncludeVerInfo>true</VerInfo_IncludeVerInfo>
@@ -229,6 +248,8 @@ $(PreBuildEvent)]]></PreBuildEvent>
         <DCCReference Include="Source\PM.UserPrefs.pas"/>
         <DCCReference Include="Source\PM.MachineId.pas"/>
         <DCCReference Include="Source\PM.Licence.pas"/>
+        <DCCReference Include="Source\PM.LicenceGate.pas"/>
+        <DCCReference Include="Source\DelphiZXingQRCode.pas"/>
         <DCCReference Include="Source\PM.AutoStart.pas"/>
         <DCCReference Include="Source\PM.Favicon.pas"/>
         <DCCReference Include="Source\PM.ProcessLockdown.pas"/>
@@ -274,7 +295,7 @@ $(PreBuildEvent)]]></PreBuildEvent>
                 <Platform value="OSX64">True</Platform>
                 <Platform value="OSXARM64">True</Platform>
                 <Platform value="Win32">True</Platform>
-                <Platform value="Win64">False</Platform>
+                <Platform value="Win64">True</Platform>
             </Platforms>
             <Deployment Version="4">
                 <DeployFile LocalName="$(BDS)\Redist\iossimulator\libcgunwind.1.0.dylib" Class="DependencyModule">

delphi-backend/Source/DelphiZXingQRCode.LICENSE.md

@@ -0,0 +1,202 @@
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+
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delphi-backend/Source/PM.Bridge.pas

@@ -116,6 +116,8 @@ type
     // force-killed (which leaves -shm / -wal files behind).
     FShutdownPending: Boolean;
     FOnTrayRestore: TProc;
+    FOnFillBarSettings: TProc;
+    FOnFillBarChanged: TProc;
     FOnLockRequest: TProc;
     FOnQuit: TProc;
     FOnQuickSearchRequest: TProc;
@@ -169,7 +171,15 @@ type
     // Dernier etat connu du survol, pour ne reposer l'opacite que sur un
     // changement - SetLayeredWindowAttributes force un repaint a chaque appel.
     FLazyHover: Boolean;
+    // Barrette en icones (police Segoe MDL2 Assets) plutot qu'en mots, et sa
+    // largeur reelle - elle depend des boutons choisis dans les reglages.
+    FLazyIcons: Boolean;
+    FLazyW: Integer;
     procedure LazyWindowHandler(var AMsg: TMessage);
+    // Corps extraits des raccourcis Ctrl+Shift+A et Ctrl+Shift+Q : la barrette
+    // les declenche aussi, meme capture de la fenetre cible.
+    procedure FireNewEntryRequest;
+    procedure FireQuickSearchRequest;
     /// Pose l'opacite qui convient a l'etat de survol donne.
     procedure ApplyLazyAlpha(AHover: Boolean);
     /// Menu du clic droit sur la barrette : le choix de l'opacite au repos.
@@ -271,6 +281,10 @@ type
     // peinture a besoin du theme.
     procedure RestoreLazyBar;
     function LazyBarVisible: Boolean;
+    /// Reconstruit la barrette apres un changement de ses reglages (boutons,
+    /// icones). POSTE : l'appel peut venir de la barrette elle-meme, qu'on ne
+    /// detruit pas depuis son propre gestionnaire.
+    procedure ReloadLazyBar;
     property AutofillRegistered: Boolean read FAutofillRegistered;
     // Per-slot outcome of the last SetAutofillHotkeys — lets the host name
     // exactly which combo lost the race with another app's global hotkey
@@ -285,6 +299,12 @@ type
     property ShutdownPending: Boolean read FShutdownPending;
     // Fired on main thread when the user clicks the tray icon.
     property OnTrayRestore: TProc read FOnTrayRestore write FOnTrayRestore;
+    // Clic droit sur la barrette -> "Fill bar settings..." : la fenetre revient
+    // (OnTrayRestore) puis l'hote ouvre l'onglet Fill bar des reglages.
+    property OnFillBarSettings: TProc read FOnFillBarSettings write FOnFillBarSettings;
+    // La barrette a change hors des reglages (clic droit, menu du tray) : l'hote
+    // rafraichit l'onglet Fill bar s'il est affiche.
+    property OnFillBarChanged: TProc read FOnFillBarChanged write FOnFillBarChanged;
     // Fired when the user picks "Lock vault" from the tray menu. Handler
     // should trigger the JS lockVault() (typically via ExecuteJavaScript).
     property OnLockRequest: TProc read FOnLockRequest write FOnLockRequest;
@@ -329,7 +349,7 @@ type
 implementation
 
 uses
-  FMX.Platform.Win;
+  FMX.Platform.Win, Winapi.CommCtrl;
 
 // Foreground window at process start — captured in this unit's initialization,
 // which runs before any of our windows exist. Every later opportunity is
@@ -377,6 +397,7 @@ const
   // traitee sur place : detruire une fenetre depuis son propre gestionnaire
   // libererait, en plein envoi, l'instance qui sert de window proc.
   WM_LAZY_CLOSE = WM_APP + 2;
+  WM_LAZY_RELOAD = WM_APP + 3;
 
 // WTS session change message and state constants (declared here to avoid
 // a hard dependency on Winapi.WtsApi32 which varies across Delphi versions).
@@ -420,6 +441,11 @@ const
   LAZY_ID_TOTP = 103;
   LAZY_ID_CLOSE = 104;
   LAZY_ID_OPEN  = 105;
+  LAZY_ID_ADD    = 106;   // nouvelle entree depuis la fenetre en avant (Ctrl+Shift+A)
+  LAZY_ID_SEARCH = 107;   // recherche rapide (Ctrl+Shift+Q)
+  LAZY_ID_SETTINGS = 108; // reglages, onglet Fill bar
+  LAZY_MENU_ICONS = 1;    // hors des valeurs d'opacite (25..100) du meme menu
+  LAZY_MENU_SETTINGS = 2;
   // LE SONDAGE PLUTOT QUE TrackMouseEvent. La barrette a quatre fenetres
   // enfants : passer d'elle a un bouton envoie deja un WM_MOUSELEAVE au parent,
   // et il faudrait donc suivre la souris sur les cinq fenetres pour recoller
@@ -438,7 +464,11 @@ const
   // elle doit revenir AVANT toute ouverture de coffre, et localStorage est vide
   // a chaque lancement (le port ephemere change d'origine).
   LAZY_ON_KEY = 'lazyOn';
-  LAZY_W       = 298;
+  // Boutons affiches, dans l'ordre, et le choix icones/texte. Le X est toujours
+  // la : c'est la seule facon de fermer la barrette la ou elle est.
+  LAZY_BTNS_KEY     = 'lazyButtons';
+  LAZY_BTNS_DEFAULT = 'full,pwd,totp,add,search,open,settings';
+  LAZY_ICONS_KEY    = 'lazyIcons';
   LAZY_H       = 40;
 
 // Palette de la barrette, en COLORREF ($00BBGGRR - les octets sont INVERSES
@@ -455,6 +485,9 @@ const
   LAZY_LITE_DOWN  = $DDE3E3;   // --bg-elev-3   #e3e3dd
   LAZY_LITE_EDGE  = $D7DCDC;   // --border      #dcdcd7
   LAZY_LITE_INK   = $1F1A1A;   // --text        #1a1a1f
+  // Survol : l'accent de l'app, comme les boutons de la fenetre principale.
+  LAZY_DARK_ACCENT = $D4B606;  // --accent      #06b6d4
+  LAZY_LITE_ACCENT = $B29108;  // --accent      #0891b2
 
 // Dynamic WTS function pointers — wtsapi32.dll is not guaranteed on all
 // Windows SKUs (e.g. minimal Server Core without Session Services), so
@@ -1101,6 +1134,8 @@ end;
 // a retenir.
 var
   GLazyOldBtnProc: Pointer = nil;
+  // Bouton de la barrette sous la souris (0 = aucun) : il se peint a l'accent.
+  GLazyHotBtn: HWND = 0;
 
 /// Un appui sur un bouton de la barrette : clic, ou debut de glissement ?
 ///
@@ -1133,6 +1168,26 @@ begin
         MAKEWPARAM(GetDlgCtrlID(AWnd), BN_CLICKED), LPARAM(AWnd));
     Exit(0);
   end;
+  // LE SURVOL SE VOIT. Un bouton peint a la main n'a aucun etat "survole" :
+  // on le suit ici (entree par WM_MOUSEMOVE, sortie par WM_MOUSELEAVE demande a
+  // TrackMouseEvent) et on redessine les deux boutons concernes.
+  if (AMsg = WM_MOUSEMOVE) and (GLazyHotBtn <> AWnd) then
+  begin
+    if GLazyHotBtn <> 0 then InvalidateRect(GLazyHotBtn, nil, False);
+    GLazyHotBtn := AWnd;
+    InvalidateRect(AWnd, nil, False);
+    var LTrack: TTrackMouseEvent;
+    LTrack.cbSize := SizeOf(LTrack);
+    LTrack.dwFlags := TME_LEAVE;
+    LTrack.hwndTrack := AWnd;
+    LTrack.dwHoverTime := 0;
+    TrackMouseEvent(LTrack);
+  end
+  else if (AMsg = WM_MOUSELEAVE) and (GLazyHotBtn = AWnd) then
+  begin
+    GLazyHotBtn := 0;
+    InvalidateRect(AWnd, nil, False);
+  end;
   Result := CallWindowProc(GLazyOldBtnProc, AWnd, AMsg, AWp, ALp);
 end;
 
@@ -1142,6 +1197,9 @@ var
   LBrush: HBRUSH;
   LFace, LEdge, LInk: COLORREF;
   LText: array[0..31] of Char;
+  LGlyph: Char;
+  LFont: HFONT;
+  LOldFont: HGDIOBJ;
 begin
   LRect := ADraw.rcItem;
   if FDarkTheme then
@@ -1154,6 +1212,18 @@ begin
     LFace := LAZY_LITE_FACE; LEdge := LAZY_LITE_EDGE; LInk := LAZY_LITE_INK;
     if (ADraw.itemState and ODS_SELECTED) <> 0 then LFace := LAZY_LITE_DOWN;
   end;
+  // Survole : fond releve et encre a l'accent, cadre compris.
+  if ADraw.hwndItem = GLazyHotBtn then
+  begin
+    if FDarkTheme then
+    begin
+      LFace := LAZY_DARK_DOWN; LInk := LAZY_DARK_ACCENT; LEdge := LAZY_DARK_ACCENT;
+    end
+    else
+    begin
+      LFace := LAZY_LITE_DOWN; LInk := LAZY_LITE_ACCENT; LEdge := LAZY_LITE_ACCENT;
+    end;
+  end;
 
   LBrush := CreateSolidBrush(LFace);
   FillRect(ADraw.hDC, LRect, LBrush);
@@ -1162,11 +1232,36 @@ begin
   FrameRect(ADraw.hDC, LRect, LBrush);
   DeleteObject(LBrush);
 
+  SetBkMode(ADraw.hDC, TRANSPARENT);
+  SetTextColor(ADraw.hDC, LInk);
+  if FLazyIcons then
+  begin
+    // Segoe MDL2 Assets, livree avec Windows 10 et 11 : aucune image a
+    // embarquer, et le glyphe suit la couleur du texte comme un mot.
+    case ADraw.CtlID of
+      LAZY_ID_FULL:   LGlyph := #$E77B;   // Contact
+      LAZY_ID_PWD:    LGlyph := #$E8D7;   // Permissions (cle)
+      LAZY_ID_TOTP:   LGlyph := #$E823;   // Recent (horloge du code)
+      LAZY_ID_ADD:    LGlyph := #$E710;   // Add
+      LAZY_ID_SEARCH: LGlyph := #$E721;   // Search
+      LAZY_ID_OPEN:   LGlyph := #$E8A7;   // OpenInNewWindow
+      LAZY_ID_SETTINGS: LGlyph := #$E713; // Settings (roue)
+    else
+      LGlyph := #$E711;                   // Cancel (X)
+    end;
+    LFont := CreateFont(-16, 0, 0, 0, FW_NORMAL, 0, 0, 0, DEFAULT_CHARSET,
+      OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS, CLEARTYPE_QUALITY,
+      DEFAULT_PITCH, 'Segoe MDL2 Assets');
+    LOldFont := SelectObject(ADraw.hDC, LFont);
+    DrawText(ADraw.hDC, PChar(LGlyph), 1, LRect,
+             DT_CENTER or DT_VCENTER or DT_SINGLELINE);
+    SelectObject(ADraw.hDC, LOldFont);
+    DeleteObject(LFont);
+    Exit;
+  end;
   // Le libelle est celui de la fenetre-bouton : une seule verite, posee a la
   // creation, plutot qu'une table de correspondance a tenir a jour.
   GetWindowText(ADraw.hwndItem, LText, Length(LText));
-  SetBkMode(ADraw.hDC, TRANSPARENT);
-  SetTextColor(ADraw.hDC, LInk);
   DrawText(ADraw.hDC, LText, -1, LRect,
            DT_CENTER or DT_VCENTER or DT_SINGLELINE);
 end;
@@ -1191,6 +1286,7 @@ var
   LPt: TPoint;
   LCmd: Cardinal;
   I: Integer;
+  LIconsLabel: string;
 begin
   LMenu := CreatePopupMenu;
   if LMenu = 0 then Exit;
@@ -1199,6 +1295,10 @@ begin
       AppendMenu(LMenu,
         MF_STRING or IfThen(FLazyAlphaPct = CHOICES[I], MF_CHECKED, MF_UNCHECKED),
         CHOICES[I], PChar(Format('%d%% when the mouse leaves', [CHOICES[I]])));
+    if FLazyIcons then LIconsLabel := 'Show text' else LIconsLabel := 'Show icons';
+    AppendMenu(LMenu, MF_SEPARATOR, 0, nil);
+    AppendMenu(LMenu, MF_STRING, LAZY_MENU_ICONS, PChar(LIconsLabel));
+    AppendMenu(LMenu, MF_STRING, LAZY_MENU_SETTINGS, 'Fill bar settings...');
 
     // LE BATTEMENT DOIT S'ARRETER PENDANT LE MENU. Il repose la barrette en
     // tete de la bande TOPMOST cinq fois par seconde - or le menu deroulant est
@@ -1216,11 +1316,22 @@ begin
       LPt.X, LPt.Y, 0, FMsgWindow, nil));
     PostMessage(FMsgWindow, WM_NULL, 0, 0);
 
-    if LCmd > 0 then
+    if LCmd = LAZY_MENU_SETTINGS then
+    begin
+      if Assigned(FOnTrayRestore) then FOnTrayRestore();
+      if Assigned(FOnFillBarSettings) then FOnFillBarSettings();
+    end
+    else if LCmd = LAZY_MENU_ICONS then
+    begin
+      if FLazyIcons then SetPref(LAZY_ICONS_KEY, '0') else SetPref(LAZY_ICONS_KEY, '1');
+      ReloadLazyBar;
+    end
+    else if LCmd > 0 then
     begin
       FLazyAlphaPct := LCmd;
       SetPref(LAZY_ALPHA_KEY, IntToStr(FLazyAlphaPct));
       ApplyLazyAlpha(FLazyHover);
+      if Assigned(FOnFillBarChanged) then FOnFillBarChanged();
     end;
   finally
     DestroyMenu(LMenu);
@@ -1317,6 +1428,13 @@ begin
           LAZY_ID_PWD:  FireAutofillRequest(akPasswordOnly, True);
           LAZY_ID_TOTP: FireAutofillRequest(akTotp, True);
           LAZY_ID_OPEN:  if Assigned(FOnTrayRestore) then FOnTrayRestore();
+          LAZY_ID_ADD:    FireNewEntryRequest;
+          LAZY_ID_SEARCH: FireQuickSearchRequest;
+          LAZY_ID_SETTINGS:
+            begin
+              if Assigned(FOnTrayRestore) then FOnTrayRestore();
+              if Assigned(FOnFillBarSettings) then FOnFillBarSettings();
+            end;
           LAZY_ID_CLOSE: PostMessage(FMsgWindow, WM_LAZY_CLOSE, 0, 0);
         end;
         AMsg.Result := 0;
@@ -1326,20 +1444,84 @@ begin
   AMsg.Result := DefWindowProc(FLazyWnd, AMsg.Msg, AMsg.WParam, AMsg.LParam);
 end;
 
+procedure TPMBridge.FireNewEntryRequest;
+var
+  LTarget: HWND;
+  LTitle: string;
+  LLen: Integer;
+begin
+  if not Assigned(FOnNewEntryHotkey) then Exit;
+  LTarget := GetForegroundWindow;
+  LTitle := '';
+  // The window we are about to cover is exactly the one to hand the
+  // foreground back to when we return to the tray.
+  CaptureForegroundOwner;
+  // From the tray the foreground can resolve to OUR own window — don't
+  // pre-fill the new entry with "Password Manager". Only capture a real
+  // external window's title; otherwise pass '' (blank title).
+  if not IsOwnProcessWindow(LTarget) then
+  begin
+    SetLength(LTitle, 512);
+    LLen := GetWindowTextW(LTarget, PChar(LTitle), 512);
+    SetLength(LTitle, LLen);
+  end;
+  FOnNewEntryHotkey(LTitle);
+end;
+
+procedure TPMBridge.FireQuickSearchRequest;
+var
+  LTarget: HWND;
+  LTitle: string;
+  LLen: Integer;
+begin
+  // Quick-search + autofill: capture the foreground HWND BEFORE the JS
+  // modal steals focus, hand it to the host so it can stash it in
+  // FAutofillTargetHWND (consumed by cmd://autofill/execute later).
+  if not Assigned(FOnQuickSearchHotkey) then Exit;
+  LTarget := GetForegroundWindow;
+  CaptureForegroundOwner;
+  // Same trap as the autofill hotkeys: our own hidden window can be the
+  // foreground one. Report no target — the host then opens quick search in
+  // copy mode instead of offering to type into ourselves.
+  if IsOwnProcessWindow(LTarget) then LTarget := 0;
+  LTitle := '';
+  if LTarget <> 0 then
+  begin
+    SetLength(LTitle, 512);
+    LLen := GetWindowTextW(LTarget, PChar(LTitle), 512);
+    SetLength(LTitle, LLen);
+  end;
+  FOnQuickSearchHotkey(akPasswordOnly, LTarget, LTitle);
+end;
+
+procedure TPMBridge.ReloadLazyBar;
+begin
+  PostMessage(FMsgWindow, WM_LAZY_RELOAD, 0, 0);
+end;
+
 procedure TPMBridge.RestoreLazyBar;
 begin
   if GetPref(LAZY_ON_KEY) = '1' then SetLazyBar(True);
 end;
 
 procedure TPMBridge.SetLazyBar(AOn: Boolean);
+// Declarees AVANT les routines imbriquees, qui s'en servent : une routine
+// imbriquee ne voit que les variables declarees au-dessus d'elle.
+var
+  LWork, LRect: TRect;
+  LSaved: TArray<string>;
+  LX, LY, LPosX, LPosY: Integer;
+  LList: string;
+  LTip: HWND;
 
   // BS_OWNERDRAW : le systeme garde le suivi de la souris et l'etat enfonce,
   // nous ne reprenons que les couleurs. Un bouton standard resterait gris clair
   // sur fond sombre, comme sur la capture qui a motive ce changement.
-  procedure MakeButton(AId: Integer; const ACaption: string;
+  procedure MakeButton(AId: Integer; const ACaption, ATip: string;
     AX, AWidth: Integer);
   var
     LBtn: HWND;
+    LTool: TToolInfo;
   begin
     LBtn := CreateWindow('BUTTON', PChar(ACaption),
       WS_CHILD or WS_VISIBLE or BS_OWNERDRAW, AX, 5, AWidth, 28,
@@ -1349,12 +1531,32 @@ procedure TPMBridge.SetLazyBar(AOn: Boolean);
     SendMessage(LBtn, WM_SETFONT, WPARAM(GetStockObject(DEFAULT_GUI_FONT)), 1);
     GLazyOldBtnProc := Pointer(SetWindowLongPtr(LBtn, GWLP_WNDPROC,
       LONG_PTR(@LazyButtonProc)));
+    // UNE ICONE SANS MOT SE NOMME AU SURVOL. Info-bulle posee dans les deux
+    // modes : elle dit aussi ce que fait "Add" ou "Search" en texte.
+    if LTip <> 0 then
+    begin
+      FillChar(LTool, SizeOf(LTool), 0);
+      LTool.cbSize := SizeOf(LTool);
+      LTool.uFlags := TTF_IDISHWND or TTF_SUBCLASS;
+      LTool.hwnd := FLazyWnd;
+      LTool.uId := UINT_PTR(LBtn);
+      LTool.lpszText := PChar(ATip);
+      SendMessage(LTip, TTM_ADDTOOL, 0, LPARAM(@LTool));
+    end;
+  end;
+
+  // Un bouton du jeu choisi dans les reglages, pose a la suite des precedents.
+  procedure AddButton(const AKey: string; AId: Integer;
+    const ACaption, ATip: string; ATextWidth: Integer);
+  var
+    LW: Integer;
+  begin
+    if not (',' + LList + ',').Contains(',' + AKey + ',') then Exit;
+    LW := IfThen(FLazyIcons, 30, ATextWidth);
+    MakeButton(AId, ACaption, ATip, LX, LW);
+    Inc(LX, LW + 6);
   end;
 
-var
-  LWork, LRect: TRect;
-  LSaved: TArray<string>;
-  LX, LY, LPosX, LPosY: Integer;
 begin
   if AOn = LazyBarVisible then Exit;
   if AOn then SetPref(LAZY_ON_KEY, '1') else SetPref(LAZY_ON_KEY, '0');
@@ -1363,6 +1565,7 @@ begin
   begin
     DeallocateHWnd(FLazyWnd);   // the child buttons go with their parent
     FLazyWnd := 0;
+    if Assigned(FOnFillBarChanged) then FOnFillBarChanged();
     Exit;
   end;
 
@@ -1376,23 +1579,38 @@ begin
   if (FLazyAlphaPct < 25) or (FLazyAlphaPct > 100) then
     FLazyAlphaPct := LAZY_ALPHA_DEFAULT;
 
-  MakeButton(LAZY_ID_FULL, 'Full',      5,  56);
+  FLazyIcons := GetPref(LAZY_ICONS_KEY) = '1';
-  MakeButton(LAZY_ID_PWD,  'Password', 67,  76);
+  LList := GetPref(LAZY_BTNS_KEY);
-  MakeButton(LAZY_ID_TOTP, '2FA',     149,  52);
+  if LList = '' then LList := LAZY_BTNS_DEFAULT;
+  InitCommonControls;
+  LTip := CreateWindowEx(WS_EX_TOPMOST, TOOLTIPS_CLASS, nil,
+    WS_POPUP or TTS_ALWAYSTIP or TTS_NOPREFIX,
+    Integer(CW_USEDEFAULT), Integer(CW_USEDEFAULT),
+    Integer(CW_USEDEFAULT), Integer(CW_USEDEFAULT),
+    FLazyWnd, 0, HInstance, nil);
+
+  LX := 5;
+  AddButton('full',   LAZY_ID_FULL,   'Full',     'Fill username and password', 56);
+  AddButton('pwd',    LAZY_ID_PWD,    'Password', 'Fill the password only', 76);
+  AddButton('totp',   LAZY_ID_TOTP,   '2FA',      'Fill the 2FA code', 52);
+  AddButton('add',    LAZY_ID_ADD,    'Add',      'New entry from the current window', 48);
+  AddButton('search', LAZY_ID_SEARCH, 'Search',   'Quick search', 60);
   // Meme raison que le X : quand la barrette est allumee, elle est souvent la
   // seule chose de l'application a l'ecran. Revenir au coffre ne doit pas
   // demander de retrouver l'icone du tray.
-  MakeButton(LAZY_ID_OPEN, 'Open',    207,  56);
+  AddButton('open',   LAZY_ID_OPEN,   'Open',     'Open the vault', 56);
+  AddButton('settings', LAZY_ID_SETTINGS, 'Settings', 'Fill bar settings', 64);
   // Fermer la barrette sans passer par le menu du tray : elle flotte au-dessus
   // de tout, donc s'en debarrasser doit se faire la ou elle est.
-  MakeButton(LAZY_ID_CLOSE, 'X',      269,  24);
+  MakeButton(LAZY_ID_CLOSE, 'X', 'Close the fill bar', LX, 24);
+  FLazyW := LX + 24 + 5;
 
   // Bottom right of the WORK area, so it does not start life under the
   // taskbar. From there the user drags it wherever the login form is.
   if not SystemParametersInfo(SPI_GETWORKAREA, 0, @LWork, 0) then
     LWork := Rect(0, 0, GetSystemMetrics(SM_CXSCREEN),
                         GetSystemMetrics(SM_CYSCREEN));
-  LX := LWork.Right - LAZY_W - 24;
+  LX := LWork.Right - FLazyW - 24;
   LY := LWork.Bottom - LAZY_H - 24;
 
   // LA POSITION RETENUE, SI ELLE TOMBE ENCORE SUR UN ECRAN. Un ecran debranche
@@ -1403,7 +1621,7 @@ begin
   if (Length(LSaved) = 2) and TryStrToInt(LSaved[0], LPosX)
                           and TryStrToInt(LSaved[1], LPosY) then
   begin
-    LRect := Rect(LPosX, LPosY, LPosX + LAZY_W, LPosY + LAZY_H);
+    LRect := Rect(LPosX, LPosY, LPosX + FLazyW, LPosY + LAZY_H);
     if MonitorFromRect(@LRect, MONITOR_DEFAULTTONULL) <> 0 then
     begin
       LX := LPosX;
@@ -1411,7 +1629,7 @@ begin
     end;
   end;
 
-  SetWindowPos(FLazyWnd, HWND_TOPMOST, LX, LY, LAZY_W, LAZY_H,
+  SetWindowPos(FLazyWnd, HWND_TOPMOST, LX, LY, FLazyW, LAZY_H,
     SWP_NOACTIVATE or SWP_SHOWWINDOW);
 
   // La souris est ailleurs a la seconde ou la barrette parait : elle nait donc
@@ -1419,6 +1637,7 @@ begin
   FLazyHover := False;
   ApplyLazyAlpha(False);
   SetTimer(FLazyWnd, LAZY_TIMER_ID, LAZY_POLL_MS, nil);
+  if Assigned(FOnFillBarChanged) then FOnFillBarChanged();
 end;
 
 procedure TPMBridge.MsgWindowHandler(var AMsg: TMessage);
@@ -1435,6 +1654,16 @@ begin
     Exit;
   end
 
+  else if AMsg.Msg = WM_LAZY_RELOAD then
+  begin
+    if LazyBarVisible then
+    begin
+      SetLazyBar(False);
+      SetLazyBar(True);
+    end;
+    Exit;
+  end
+
   else if AMsg.Msg = WM_TRAY_ICON then
   begin
     // For Shell_NotifyIcon callback messages, the mouse event is in the
@@ -1495,50 +1724,10 @@ begin
   end
 
   else if (AMsg.Msg = WM_HOTKEY) and (AMsg.WParam = NEW_ENTRY_HOTKEY_ID) then
-  begin
+    FireNewEntryRequest
-    if Assigned(FOnNewEntryHotkey) then
-    begin
-      var LTarget := GetForegroundWindow;
-      var LTitle: string := '';
-      // The window we are about to cover is exactly the one to hand the
-      // foreground back to when we return to the tray.
-      CaptureForegroundOwner;
-      // From the tray the foreground can resolve to OUR own window — don't
-      // pre-fill the new entry with "Password Manager". Only capture a real
-      // external window's title; otherwise pass '' (blank title).
-      if not IsOwnProcessWindow(LTarget) then
-      begin
-        SetLength(LTitle, 512);
-        var LLen := GetWindowTextW(LTarget, PChar(LTitle), 512);
-        SetLength(LTitle, LLen);
-      end;
-      FOnNewEntryHotkey(LTitle);
-    end;
-  end
 
   else if (AMsg.Msg = WM_HOTKEY) and (AMsg.WParam = QUICK_SEARCH_HOTKEY_ID) then
-  begin
+    FireQuickSearchRequest
-    // Quick-search + autofill: capture the foreground HWND BEFORE the JS
-    // modal steals focus, hand it to the host so it can stash it in
-    // FAutofillTargetHWND (consumed by cmd://autofill/execute later).
-    if Assigned(FOnQuickSearchHotkey) then
-    begin
-      var LTarget := GetForegroundWindow;
-      CaptureForegroundOwner;
-      // Same trap as the autofill hotkeys: our own hidden window can be the
-      // foreground one. Report no target — the host then opens quick search in
-      // copy mode instead of offering to type into ourselves.
-      if IsOwnProcessWindow(LTarget) then LTarget := 0;
-      var LTitle: string;
-      if LTarget <> 0 then
-      begin
-        SetLength(LTitle, 512);
-        var LLen := GetWindowTextW(LTarget, PChar(LTitle), 512);
-        SetLength(LTitle, LLen);
-      end;
-      FOnQuickSearchHotkey(akPasswordOnly, LTarget, LTitle);
-    end;
-  end
 
   else if (AMsg.Msg = WM_HOTKEY) and Assigned(FOnAutofillRequest) and
           ((AMsg.WParam = AUTOFILL_HOTKEY_ID_FULL) or

delphi-backend/Source/PM.Database.pas

@@ -14,6 +14,12 @@ uses
   System.SysUtils, System.Classes, System.IOUtils, System.SyncObjs,
   FireDAC.Comp.Client, FireDAC.Stan.Def, FireDAC.Stan.Async,
   FireDAC.Phys.SQLite, FireDAC.DApt, FireDAC.Stan.Param,
+  // SQLITE LIE DANS L'EXE, SUR TOUTES LES PLATEFORMES. En Win32 FireDAC le
+  // faisait deja par defaut ; en Win64 il cherchait sqlite3.dll a cote de
+  // l'exe et refusait de demarrer. On ne livre qu'un exe, sans DLL : cette
+  // unite est ce qui le permet en 64 bits. Stat et non FDEStat — le coffre
+  // est un SQLite ordinaire, le chiffrement se fait cote JavaScript.
+  FireDAC.Phys.SQLiteWrapper.Stat,
   FireDAC.FMXUI.Wait, FireDAC.Stan.Intf, FireDAC.UI.Intf,
   Data.DB;
 

delphi-backend/Source/PM.Licence.pas

@@ -60,6 +60,13 @@ function ThisMachineId: string;
 // l'initialisation de l'unite, comme SelfTestCrypto.
 procedure SelfTestLicence;
 
+// Exposes pour PM.LicenceGate, la deuxieme couche. Ce sont des DONNEES, pas
+// des decisions : elle partage la cle et le nom de la pref, et rien qui dise
+// oui ou non — sinon rapiecer une seule fonction ouvrirait les deux couches.
+const
+  LicencePrefKey = 'licenceKey';
+function LicencePublicKey: TBytes;
+
 implementation
 
 uses
@@ -67,8 +74,6 @@ uses
   PM.UserPrefs, PM.MachineId;
 
 const
-  LicencePrefKey = 'licenceKey';
-
   // ===== LA CLE PUBLIQUE DE L'EDITEUR ========================================
   //
   // BCRYPT_ECCPUBLIC_BLOB : magic 'ECS1' + longueur(32) + X(32) + Y(32).
@@ -258,6 +263,11 @@ begin
   Move(LicencePublicKeyBlob[0], Result[0], EccBlobLen);
 end;
 
+function LicencePublicKey: TBytes;
+begin
+  Result := ProductionKey;
+end;
+
 function VerifyLicence(const ALicence: string; out AInfo: TLicenceInfo): Boolean;
 begin
   Result := SplitAndVerify(ProductionKey, Trim(ALicence), AInfo) and

delphi-backend/Source/PM.LicenceGate.pas

@@ -0,0 +1,220 @@
+unit PM.LicenceGate;
+
+{
+  Deuxieme couche de licence : l'API refuse de servir sans licence valable.
+
+  POURQUOI UNE DEUXIEME COUCHE, ET POURQUOI ICI. La premiere couche est l'ecran
+  d'activation, qui consulte PM.Licence.IsLicensed. C'est un seul branchement :
+  le rapiecer ouvrait tout, puisque l'API elle-meme ne demandait rien. Celle-ci
+  garde la porte LA OU SONT LES DONNEES — chaque route de PM.Router passe par
+  ApiLicenceOk avant son handler. Sauter l'ecran ne donne plus acces a rien.
+
+  AUCUNE FONCTION DE DECISION PARTAGEE AVEC PM.Licence. Si les deux couches
+  appelaient IsLicensed, rapiecer IsLicensed ouvrirait les deux d'un coup, et il
+  n'y aurait qu'une couche habillee en deux. Cette unite refait donc sa propre
+  verification de bout en bout — decodage, empreinte SHA-256, appel CNG, lecture
+  du champ machine — et ne prend a PM.Licence que des DONNEES : la cle publique
+  et le nom de la pref. Il faut trouver et rapiecer deux branchements distincts.
+
+  LE PRIX DE L'INDEPENDANCE : deux implementations qui doivent dire la meme
+  chose. Si elles divergeaient, un client licencie verrait l'ecran s'effacer
+  puis chaque requete tomber en 404 — le pire defaut possible, celui qui refuse
+  quelqu'un qui a paye. Deux garde-fous, et il faut savoir ce que chacun
+  couvre :
+  - SelfTestLicenceGate eprouve CETTE verification seule, sur un vecteur lie a
+    une empreinte fixe, et commence par le sens qui accepte — celui dont
+    l'echec coute le plus.
+  - L'ACCORD entre les deux couches ne se teste pas ici : la premiere compare a
+    l'empreinte reelle du poste, qui n'est pas un vecteur. Il se prouve en
+    lancant l'application avec une vraie licence — l'ecran passe (1re couche) ET
+    la connexion aboutit (2e couche).
+
+  CE QUE CA N'ARRETE PAS : quelqu'un qui trouve et rapiece les deux. Ca passe
+  d'une heure a deux ; ca ne change pas la nature d'un schema hors ligne.
+}
+
+interface
+
+uses
+  System.SysUtils;
+
+// L'API peut-elle servir ? Revenu vrai une fois, retenu pour le processus :
+// une licence valable ne cesse pas de l'etre en cours de route, et ce test se
+// trouve sur le chemin de CHAQUE requete. Un refus n'est jamais retenu — une
+// activation faite juste apres doit etre vue a la requete suivante.
+function ApiLicenceOk: Boolean;
+
+procedure SelfTestLicenceGate;
+
+implementation
+
+uses
+  System.JSON, System.Hash, System.NetEncoding, Winapi.Windows,
+  PM.UserPrefs, PM.MachineId, PM.Licence;
+
+// ===== CNG, redeclare ici expres ============================================
+//
+// Les memes fonctions que PM.Licence, declarees une seconde fois : les partager
+// ferait de leur appelant commun un point de rapiecage unique.
+
+const
+  GateStatusSuccess  = NTSTATUS(0);
+  GateAlgEcdsaP256   = 'ECDSA_P256';
+  GateBlobEccPublic  = 'ECCPUBLICBLOB';
+  GateBlobLen        = 72;
+  GateSigLen         = 64;
+
+function GateOpenAlg(out phAlgorithm: Pointer; pszAlgId, pszImplementation: PWideChar;
+  dwFlags: ULONG): NTSTATUS; stdcall; external 'bcrypt.dll' name 'BCryptOpenAlgorithmProvider';
+function GateCloseAlg(hAlgorithm: Pointer; dwFlags: ULONG): NTSTATUS; stdcall;
+  external 'bcrypt.dll' name 'BCryptCloseAlgorithmProvider';
+function GateImportKey(hAlgorithm, hImportKey: Pointer; pszBlobType: PWideChar;
+  out phKey: Pointer; pbInput: PByte; cbInput, dwFlags: ULONG): NTSTATUS; stdcall;
+  external 'bcrypt.dll' name 'BCryptImportKeyPair';
+function GateDestroyKey(hKey: Pointer): NTSTATUS; stdcall;
+  external 'bcrypt.dll' name 'BCryptDestroyKey';
+function GateVerifySig(hKey, pPaddingInfo: Pointer; pbHash: PByte; cbHash: ULONG;
+  pbSignature: PByte; cbSignature, dwFlags: ULONG): NTSTATUS; stdcall;
+  external 'bcrypt.dll' name 'BCryptVerifySignature';
+
+function GateB64Url(const AText: string): TBytes;
+var
+  S: string;
+begin
+  S := AText.Replace('-', '+').Replace('_', '/');
+  while Length(S) mod 4 <> 0 do
+    S := S + '=';
+  try
+    Result := TNetEncoding.Base64.DecodeStringToBytes(S);
+  except
+    Result := nil;
+  end;
+end;
+
+function GateSignatureHolds(const AKey, AMsg, ASig: TBytes): Boolean;
+var
+  LAlg, LKey: Pointer;
+  LSha: THashSHA2;
+  LDigest: TBytes;
+begin
+  Result := False;
+  if (Length(AKey) <> GateBlobLen) or (Length(ASig) <> GateSigLen) or
+     (Length(AMsg) = 0) then
+    Exit;
+  if GateOpenAlg(LAlg, GateAlgEcdsaP256, nil, 0) <> GateStatusSuccess then
+    Exit;
+  try
+    if GateImportKey(LAlg, nil, GateBlobEccPublic, LKey, @AKey[0],
+         GateBlobLen, 0) <> GateStatusSuccess then
+      Exit;
+    try
+      LSha := THashSHA2.Create(THashSHA2.TSHA2Version.SHA256);
+      LSha.Update(AMsg);
+      LDigest := LSha.HashAsBytes;
+      Result := GateVerifySig(LKey, nil, @LDigest[0], Length(LDigest),
+                  @ASig[0], GateSigLen, 0) = GateStatusSuccess;
+    finally
+      GateDestroyKey(LKey);
+    end;
+  finally
+    GateCloseAlg(LAlg, 0);
+  end;
+end;
+
+// La meme regle d'acceptation que PM.Licence, reecrite : signature valable,
+// adresse presente, empreinte presente ET egale a celle attendue. AMachine est
+// un parametre pour que l'auto-test puisse la fixer — une empreinte reelle
+// change d'un poste a l'autre et ne ferait pas un vecteur.
+function GateAccepts(const AKey: TBytes; const ALicence, AMachine: string): Boolean;
+var
+  LDot: Integer;
+  LMsg, LSig: TBytes;
+  LVal: TJSONValue;
+  LMachine, LEmail: string;
+begin
+  Result := False;
+  LDot := Pos('.', ALicence);
+  if (LDot < 2) or (LDot = Length(ALicence)) then
+    Exit;
+  LMsg := GateB64Url(Copy(ALicence, 1, LDot - 1));
+  LSig := GateB64Url(Copy(ALicence, LDot + 1, MaxInt));
+  // La signature d'abord : on ne lit pas une charge utile qui ne vient pas de
+  // l'editeur.
+  if not GateSignatureHolds(AKey, LMsg, LSig) then
+    Exit;
+
+  LVal := TJSONObject.ParseJSONValue(TEncoding.UTF8.GetString(LMsg));
+  if LVal = nil then
+    Exit;
+  try
+    if not (LVal is TJSONObject) then
+      Exit;
+    LEmail   := TJSONObject(LVal).GetValue<string>('e', '');
+    LMachine := LowerCase(TJSONObject(LVal).GetValue<string>('m', ''));
+  finally
+    LVal.Free;
+  end;
+
+  Result := (LEmail <> '') and (LMachine <> '') and
+            SameText(LMachine, AMachine);
+end;
+
+var
+  GateOpen: Boolean = False;
+
+function ApiLicenceOk: Boolean;
+begin
+  if GateOpen then
+    Exit(True);
+  GateOpen := GateAccepts(LicencePublicKey,
+                Trim(GetPref(LicencePrefKey)),
+                MachineFingerprint);
+  Result := GateOpen;
+end;
+
+// ===== Auto-test =============================================================
+
+procedure SelfTestLicenceGate;
+const
+  // Paire jetable, privee jamais ecrite : la licence ci-dessous est liee a
+  // l'empreinte fixe 0123456789abcdef.
+  GateTestKey: array[0..71] of Byte = (
+    $45, $43, $53, $31, $20, $00, $00, $00, $5D, $7C, $98, $73,
+    $08, $66, $2E, $01, $38, $95, $9B, $57, $ED, $14, $E7, $15,
+    $D8, $54, $4B, $F9, $A9, $A0, $D8, $25, $44, $11, $75, $63,
+    $F5, $B8, $ED, $D0, $97, $13, $C3, $E6, $3D, $64, $B5, $D0,
+    $7F, $83, $2D, $8B, $E4, $2F, $56, $17, $A9, $7A, $1D, $90,
+    $EF, $95, $8A, $9F, $D4, $D3, $C5, $34, $22, $7B, $F3, $D8
+  );
+  GateTestLicence =
+    'eyJuIjoiR2F0ZSIsImUiOiJnYXRlQHRlc3QubG9jYWwiLCJkIjoiMjAyNi0wOS0xNiIsIm0iOiIwMTIzNDU2Nzg5YWJjZGVmIn0.' +
+    '3LuJ7UGsEw3M3v6UmuUcjNRB5FWGF5Y8clLy1cKQtHXZ9O3foW7woVCuN1F9JD68N1DfILwFr2wT9OfUDt_pPw';
+  GateTestMachine = '0123456789abcdef';
+var
+  LKey: TBytes;
+  LTampered: string;
+begin
+  SetLength(LKey, GateBlobLen);
+  Move(GateTestKey[0], LKey[0], GateBlobLen);
+
+  // LE SENS QUI COMPTE LE PLUS : une deuxieme couche qui refuserait tout
+  // bloquerait chaque client licencie. Ce cas-la d'abord.
+  if not GateAccepts(LKey, GateTestLicence, GateTestMachine) then
+    raise Exception.Create('Auto-test 2e couche ECHOUE : une licence valable est refusee.');
+  if GateAccepts(LKey, GateTestLicence, 'ffffffffffffffff') then
+    raise Exception.Create('Auto-test 2e couche ECHOUE : une licence d''un autre poste est acceptee.');
+
+  LTampered := GateTestLicence;
+  LTampered[10] := Chr(Ord(LTampered[10]) xor 1);
+  if GateAccepts(LKey, LTampered, GateTestMachine) then
+    raise Exception.Create('Auto-test 2e couche ECHOUE : une licence trafiquee est acceptee.');
+
+  if GateAccepts(LKey, '', GateTestMachine) or
+     GateAccepts(LKey, 'nimportequoi', GateTestMachine) then
+    raise Exception.Create('Auto-test 2e couche ECHOUE : du charabia est accepte.');
+end;
+
+initialization
+  SelfTestLicenceGate;
+
+end.

delphi-backend/Source/PM.Router.pas

@@ -44,6 +44,9 @@ var
 
 implementation
 
+uses
+  PM.LicenceGate, PM.JSON;
+
 constructor TPMRouter.Create;
 begin
   inherited;
@@ -86,6 +89,20 @@ begin
     LMatch := LRoute.Regex.Match(LPath);
     if LMatch.Success then
     begin
+      // DEUXIEME COUCHE DE LICENCE : ici, et seulement ici. Seules les routes
+      // de l'API arrivent a cette ligne — les fichiers de l'ecran d'activation
+      // passent par TryServeEmbedded, qui n'est pas garde, sinon l'ecran qui
+      // permet de s'activer ne pourrait plus se charger.
+      //
+      // LE MEME 404 QU'UNE ROUTE INEXISTANTE, AU CARACTERE PRES. Un corps vide
+      // ne suffisait pas : Indy le remplace par sa propre page, qui se
+      // distinguait du JSON d'une route inconnue — et revelait donc quelles
+      // routes existent. Refuser doit etre indiscernable de ne rien avoir.
+      if not ApiLicenceOk then
+      begin
+        TJSONHelper.SendError(AResponse, 404, 'Not found');
+        Exit(True);
+      end;
       SetLength(LParams, LMatch.Groups.Count - 1);
       for I := 1 to LMatch.Groups.Count - 1 do
         LParams[I - 1] := LMatch.Groups[I].Value;

delphi-backend/Source/PM.SingleInstance.pas

@@ -69,6 +69,15 @@ begin
     CloseHandle(_Mutex);
     _Mutex := 0;
   end;
+  // CEDER LE PREMIER PLAN AVANT DE REVEILLER L'AUTRE. C'est NOUS qui venons de
+  // recevoir le double-clic de l'utilisateur, donc nous seuls avons le droit de
+  // passer devant. Sans cette cession, l'instance deja lancee — qui n'a recu
+  // aucune entree — se voit refuser SetForegroundWindow par Windows : sa
+  // fenetre se montre DERRIERE les autres, avec seulement son icone dans la
+  // barre des taches. Mesure avant correctif : visible, non minimisee, pas au
+  // premier plan. Tous processus parce que le PID de l'autre instance n'est pas connu
+  // ici ; le droit cede expire a la prochaine entree utilisateur.
+  AllowSetForegroundWindow(DWORD(-1));   // ASFW_ANY, absent de Winapi.Windows
   PostMessage(HWND_BROADCAST, WM_PMShowMessage, 0, 0);
   Result := False;
 end;

delphi-backend/UMainForm.pas

@@ -35,7 +35,7 @@ uses
   FMX.TMSFNCEdgeWebBrowser,
   {$ENDIF}
   PM.HTTPServer, PM.Bridge, PM.QuickUnlock, PM.PinUnlock, PM.UserPrefs, PM.Licence, PM.AutoStart,
-  PM.Favicon,
+  PM.Favicon, DelphiZXingQRCode,
   FMX.Platform.Win, FMX.Menus;  // WindowHandleToPlatform → HWND for visibility check
 const
   // Bump on each release. Surfaced to JS via cmd://app/version, displayed
@@ -314,6 +314,20 @@ begin
   FFileSaveChunks := TDictionary<string, TStringBuilder>.Create;
   FBridge.OnSystemLock      := BridgeSystemLock;
   FBridge.OnTrayRestore     := BridgeTrayRestore;
+  // Changement fait sur la barrette elle-meme : l'onglet se relit (fillbar/get).
+  FBridge.OnFillBarChanged :=
+    procedure
+    begin
+      // Pas avant l'init de WebView2 : RestoreLazyBar passe ici au demarrage.
+      if FBrowserInitialized then
+        WebBrowser.ExecuteJavaScript('if(window.fillBarRequest)fillBarRequest()');
+    end;
+  FBridge.OnFillBarSettings :=
+    procedure
+    begin
+      WebBrowser.ExecuteJavaScript(
+        'if(window.Bridge&&Bridge.onOpenFillBarSettings)Bridge.onOpenFillBarSettings()');
+    end;
   FBridge.OnLockRequest     := BridgeLockRequest;
   FBridge.OnQuit            := BridgeQuit;
   FBridge.OnAutofillRequest := BridgeAutofillRequest;
@@ -1323,6 +1337,42 @@ begin
       'Bridge.onPrefResult("' + LEsc + '#has","' + LSet + '")');
   end
 
+  // ---- Barrette (Fill bar) : reglages depuis Settings -> Fill bar ---------
+  // Rien de secret ici : quels boutons, icones ou mots, opacite, allumee.
+  else if ACmd = 'fillbar/get' then
+  begin
+    var LFb := TJSONObject.Create;
+    try
+      LFb.AddPair('on', TJSONBool.Create(FBridge.LazyBarVisible));
+      LFb.AddPair('buttons', PM.UserPrefs.GetPref('lazyButtons'));
+      LFb.AddPair('icons', TJSONBool.Create(PM.UserPrefs.GetPref('lazyIcons') = '1'));
+      LFb.AddPair('alpha', PM.UserPrefs.GetPref('lazyAlphaPct'));
+      WebBrowser.ExecuteJavaScript(
+        'if(window.Bridge&&Bridge.onFillBar)Bridge.onFillBar(' + LFb.ToJSON + ')');
+    finally
+      LFb.Free;
+    end;
+  end
+
+  else if ACmd = 'fillbar/set' then
+  begin
+    PM.UserPrefs.SetPref('lazyButtons', GetParam('buttons'));
+    if GetParam('icons') = '1' then PM.UserPrefs.SetPref('lazyIcons', '1')
+    else PM.UserPrefs.SetPref('lazyIcons', '0');
+    var LAlpha := StrToIntDef(GetParam('alpha'), 60);
+    if (LAlpha >= 25) and (LAlpha <= 100) then
+      PM.UserPrefs.SetPref('lazyAlphaPct', IntToStr(LAlpha));
+    LogLine('fillbar/set: ' + GetParam('buttons') + ' icons=' + GetParam('icons') +
+            ' alpha=' + GetParam('alpha') + ' on=' + GetParam('on'));
+    if GetParam('on') = '1' then
+    begin
+      if FBridge.LazyBarVisible then FBridge.ReloadLazyBar
+      else FBridge.SetLazyBar(True);
+    end
+    else
+      FBridge.SetLazyBar(False);
+  end
+
   else if ACmd = 'prefs/set' then
   begin
     var LKey := GetParam('key');
@@ -1330,6 +1380,72 @@ begin
     PM.UserPrefs.SetPref(LKey, GetParam('value'));
   end
 
+  // ---- QR des reglages de synchro, pour le telephone ------------------
+  // L'EXE FABRIQUE LE QR LUI-MEME : l'URL et le jeton se lisent ici, dans les
+  // prefs DPAPI, et seule la matrice noir/blanc part vers la page - le jeton
+  // ne transite pas en clair par le moteur de rendu (meme raison que
+  // prefs/has). Le mot de passe de synchro n'y est JAMAIS : un QR se
+  // photographie par-dessus l'epaule.
+  // UN LIEN pmserver://sync?u=&t= ET NON DU TEXTE. Le scanner du telephone
+  // envoie tout texte a une recherche web (Google, Chrome) - le jeton serait
+  // parti chez Google a un appui pres. Un lien a schema propre n'a qu'une
+  // application pour l'ouvrir : la notre.
+  else if ACmd = 'sync/qr' then
+  begin
+    var LQrUrl := PM.UserPrefs.GetPref('syncUrl');
+    var LQrTok := PM.UserPrefs.GetPref('syncPwd');
+    var LBits := '';
+    var LSize := 0;
+    if (LQrUrl <> '') and (LQrTok <> '') then
+    begin
+      var LQr := TDelphiZXingQRCode.Create;
+      var LSb := TStringBuilder.Create;
+      try
+        LQr.Encoding := qrUTF8NoBOM;
+        LQr.QuietZone := 4;
+        // LE PLUS COURT POSSIBLE : moins de caracteres = modules plus gros,
+        // lisibles par une camera. L'adresse du depot plutot que l'URL d'API
+        // (le telephone la rallonge a l'enregistrement), et seuls les
+        // caracteres qui casseraient la requete sont echappes - TNetEncoding
+        // changeait chaque ":" et "/" en trois caracteres.
+        var LShort := LQrUrl;
+        var LApi := Pos('/api/v1/repos/', LShort);
+        // GitHub : l'adresse du depot est sur github.com, l'API sur api.github.com.
+        if StartsText('https://api.github.com/repos/', LShort) and
+           EndsText('/contents/vault-sync.json', LShort) then
+          LShort := 'https://github.com/' +
+            Copy(LShort, Length('https://api.github.com/repos/') + 1,
+                 Length(LShort) - Length('https://api.github.com/repos/') -
+                 Length('/contents/vault-sync.json'))
+        else if (LApi > 0) and EndsText('/contents/vault-sync.json', LShort) then
+          LShort := Copy(LShort, 1, LApi) +
+            Copy(LShort, LApi + Length('/api/v1/repos/'),
+                 Length(LShort) - LApi - Length('/api/v1/repos/') - Length('/contents/vault-sync.json') + 1);
+        LShort := StringReplace(LShort, '%', '%25', [rfReplaceAll]);
+        LShort := StringReplace(LShort, '&', '%26', [rfReplaceAll]);
+        LShort := StringReplace(LShort, '#', '%23', [rfReplaceAll]);
+        LShort := StringReplace(LShort, '+', '%2B', [rfReplaceAll]);
+        LShort := StringReplace(LShort, ' ', '%20', [rfReplaceAll]);
+        LQr.Data := 'pmserver://sync?u=' + LShort + '&t=' + TNetEncoding.URL.Encode(LQrTok);
+        LSize := LQr.Rows;
+        for var R := 0 to LQr.Rows - 1 do
+          for var C := 0 to LQr.Columns - 1 do
+            if LQr.IsBlack[R, C] then LSb.Append('1') else LSb.Append('0');
+        LBits := LSb.ToString;
+      finally
+        LSb.Free;
+        LQr.Free;
+      end;
+    end;
+    if LSize > 0 then
+      LogLine('sync/qr: ' + IntToStr(LSize) + ' modules')
+    else
+      LogLine('sync/qr: URL or token not set');
+    WebBrowser.ExecuteJavaScript(
+      'if(window.Bridge&&Bridge.onSyncQr)Bridge.onSyncQr(' + IntToStr(LSize) +
+      ',"' + LBits + '")');
+  end
+
   // ---- Licence hors ligne (PM.Licence) ---------------------------------
   // cmd://licence/status             -> Bridge.onLicenceResult(ok, porteur)
   // cmd://licence/activate?key=<...> -> idem, apres verification + rangement
@@ -1362,6 +1478,15 @@ begin
     begin
       LLicOk   := PM.Licence.IsLicensed;
       LLicInfo := PM.Licence.LicenceInfo;
+      {$IFDEF LICENCE_TEST_SKIP_SCREEN}
+      // EXE D'ESSAI UNIQUEMENT : simule une 1re couche rapiecee, pour eprouver
+      // la 2e depuis l'application elle-meme. A la COMPILATION et jamais par un
+      // reglage — un interrupteur dans config.txt, que n'importe qui peut
+      // creer a cote de l'exe, ferait sauter la 1re couche sans rapiecage.
+      // La 2e couche, elle, verifie toujours la vraie licence : c'est l'essai.
+      LLicOk := True;
+      LogLine('LICENCE TEST BUILD: ecran d''activation saute (1re couche simulee rapiecee)');
+      {$ENDIF}
     end;
     // Le nom, le courriel et la date viennent d'une charge utile QUE NOUS AVONS
     // SIGNEE, mais ils sont interpoles dans du JavaScript : on les echappe
@@ -1504,7 +1629,9 @@ begin
     // remplace l'authentification Basic, le corps d'un PUT est du JSON que JS
     // a deja mis en forme (le sha y voyage, pas dans un If-Match), et le test
     // de connexion se fait par GET - l'API des contenus ne repond pas a HEAD.
-    var LGitea := LUrl.ToLower.Contains('/api/v1/repos/');
+    // GitHub parle la meme API des contenus : meme traitement.
+    var LGitea := LUrl.ToLower.Contains('/api/v1/repos/') or
+                  LUrl.ToLower.Contains('api.github.com/repos/');
     TThread.CreateAnonymousThread(
       procedure
       var
@@ -1527,6 +1654,8 @@ begin
           try
             LHttp.ConnectionTimeout := 10000;
             LHttp.ResponseTimeout   := 30000;
+            // GitHub REFUSE toute requete sans User-Agent (403) ; Gitea l'ignore.
+            LHttp.UserAgent := 'PMServer';
             // "token <PAT>" et non "Bearer" : c'est la forme que Gitea attend
             // d'un jeton d'acces personnel, et l'autre donne un 401 muet.
             if LGitea then