Switch from tesseract to google text-recognition

app/build.gradle.kts

@@ -1,5 +1,3 @@
-import org.jetbrains.kotlin.compose.compiler.gradle.ComposeFeatureFlag
-
 plugins {
     id("com.android.application")
     id("kotlin-android")
@@ -106,7 +104,7 @@ dependencies {
     implementation(libs.androidx.constraintlayout)
 
     implementation(libs.opencv)
-    implementation(libs.tesseract4android)
+    implementation(libs.mlkit.text.recognition)
 
     implementation(libs.lifecycle.viewmodel.ktx)
     implementation(libs.lifecycle.viewmodel.savedstate)

app/src/main/java/io/github/fate_grand_automata/di/script/ScriptsModule.kt

@@ -5,7 +5,7 @@ import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
 import io.github.fate_grand_automata.accessibility.AccessibilityGestures
-import io.github.fate_grand_automata.imaging.TesseractOcrService
+import io.github.fate_grand_automata.imaging.GoogleMLOcrService
 import io.github.fate_grand_automata.scripts.FgoAutomataApi
 import io.github.fate_grand_automata.scripts.FgoGameAreaManager
 import io.github.fate_grand_automata.scripts.IFgoAutomataApi
@@ -50,5 +50,5 @@ abstract class ScriptsModule {
 
     @ScriptScope
     @Binds
-    abstract fun bindOcrService(ocrService: TesseractOcrService): OcrService
+    abstract fun bindOcrService(ocrService: GoogleMLOcrService): OcrService
 }

app/src/main/java/io/github/fate_grand_automata/imaging/GoogleMLOcrService.kt

@@ -0,0 +1,33 @@
+package io.github.fate_grand_automata.imaging
+
+import android.content.Context
+import com.google.android.gms.tasks.Tasks
+import com.google.mlkit.vision.common.InputImage
+import com.google.mlkit.vision.text.TextRecognition
+import com.google.mlkit.vision.text.latin.TextRecognizerOptions
+import dagger.hilt.android.qualifiers.ApplicationContext
+import io.github.lib_automata.OcrService
+import io.github.lib_automata.Pattern
+import io.github.lib_automata.dagger.ScriptScope
+import javax.inject.Inject
+
+
+@ScriptScope
+class GoogleMLOcrService @Inject constructor(
+    @ApplicationContext val context: Context
+) : OcrService {
+    private val recognizer = TextRecognition.getClient(TextRecognizerOptions.DEFAULT_OPTIONS)
+
+    override fun detectText(pattern: Pattern): String {
+        synchronized(recognizer) {
+            (pattern as DroidCvPattern).asBitmap().use { bmp ->
+                return InputImage.fromBitmap(bmp, 0).let { image ->
+                    Tasks.await(recognizer.process(image).addOnFailureListener {
+                        it.printStackTrace()
+                        ""
+                    }).text
+                }
+            }
+        }
+    }
+}

gradle/libs.versions.toml

@@ -30,7 +30,7 @@ opencv_version = "4.10.0"
 navigation_compose_version = "2.8.4"
 
 recyclerview_version = "1.3.2"
-tesseract4android_version = "4.7.0"
+text-recognition = "16.0.1"
 
 timber_version = "5.0.1"
 
@@ -90,7 +90,7 @@ androidx-recyclerview = { module = "androidx.recyclerview:recyclerview", version
 androidx-constraintlayout = { module = "androidx.constraintlayout:constraintlayout", version.ref = "constraintlayout_version" }
 
 opencv = { group = "org.opencv", name = "opencv", version.ref = "opencv_version" }
-tesseract4android = { module = "cz.adaptech.tesseract4android:tesseract4android", version.ref = "tesseract4android_version" }
+mlkit-text-recognition = { module = "com.google.mlkit:text-recognition", version.ref = "text-recognition" }
 
 junit-bom = { group = "org.junit", name = "junit-bom", version.ref = "junit_bom_version" }