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MLKitBarcodeAnalyzer.kt
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MLKitBarcodeAnalyzer.kt
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package maulik.barcodescanner.analyzer
import android.util.Log
import androidx.camera.core.ExperimentalGetImage
import androidx.camera.core.ImageAnalysis
import androidx.camera.core.ImageProxy
import com.google.mlkit.vision.barcode.BarcodeScanning
import com.google.mlkit.vision.common.InputImage
class MLKitBarcodeAnalyzer(private val listener: ScanningResultListener) : ImageAnalysis.Analyzer {
private var isScanning: Boolean = false
@ExperimentalGetImage
override fun analyze(imageProxy: ImageProxy) {
val mediaImage = imageProxy.image
if (mediaImage != null && !isScanning) {
val image = InputImage.fromMediaImage(mediaImage, imageProxy.imageInfo.rotationDegrees)
// Pass image to an ML Kit Vision API
// ...
val scanner = BarcodeScanning.getClient()
isScanning = true
scanner.process(image)
.addOnSuccessListener { barcodes ->
// Task completed successfully
// ...
barcodes.firstOrNull().let { barcode ->
val rawValue = barcode?.rawValue
rawValue?.let {
Log.d("Barcode", it)
listener.onScanned(it)
}
}
isScanning = false
imageProxy.close()
}
.addOnFailureListener {
// Task failed with an exception
// ...
isScanning = false
imageProxy.close()
}
}
}
}