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feat(android): support inverted qrcode (#2135)

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Yori Zhao 2019-03-08 22:19:05 +08:00 committed by Sibelius Seraphini
parent 04ea06a17d
commit e2cdad56a7
1 changed files with 39 additions and 5 deletions
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44
android/src/main/java/org/reactnative/camera/tasks/BarCodeScannerAsyncTask.java
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@ -38,14 +38,44 @@ public class BarCodeScannerAsyncTask extends android.os.AsyncTask<Void, Void, Re
Result result = null;
try {
BinaryBitmap bitmap = generateBitmapFromImageData(mImageData, mWidth, mHeight);
BinaryBitmap bitmap = generateBitmapFromImageData(
mImageData,
mWidth,
mHeight,
false
);
result = mMultiFormatReader.decodeWithState(bitmap);
} catch (NotFoundException e) {
BinaryBitmap bitmap = generateBitmapFromImageData(rotateImage(mImageData,mWidth, mHeight), mHeight, mWidth);
BinaryBitmap bitmap = generateBitmapFromImageData(
rotateImage(mImageData,mWidth, mHeight),
mHeight,
mWidth,
false
);
try {
result = mMultiFormatReader.decodeWithState(bitmap);
} catch (NotFoundException e1) {
//no barcode Found
BinaryBitmap invertedBitmap = generateBitmapFromImageData(
mImageData,
mWidth,
mHeight,
true
);
try {
result = mMultiFormatReader.decodeWithState(invertedBitmap);
} catch (NotFoundException e2) {
BinaryBitmap invertedRotatedBitmap = generateBitmapFromImageData(
rotateImage(mImageData,mWidth, mHeight),
mHeight,
mWidth,
true
);
try {
result = mMultiFormatReader.decodeWithState(invertedRotatedBitmap);
} catch (NotFoundException e3) {
//no barcode Found
}
}
}
} catch (Throwable t) {
t.printStackTrace();
@ -71,7 +101,7 @@ public class BarCodeScannerAsyncTask extends android.os.AsyncTask<Void, Void, Re
mDelegate.onBarCodeScanningTaskCompleted();
}
private BinaryBitmap generateBitmapFromImageData(byte[] imageData, int width, int height) {
private BinaryBitmap generateBitmapFromImageData(byte[] imageData, int width, int height, boolean inverse) {
PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(
imageData, // byte[] yuvData
width, // int dataWidth
@ -82,6 +112,10 @@ public class BarCodeScannerAsyncTask extends android.os.AsyncTask<Void, Void, Re
height, // int height
false // boolean reverseHorizontal
);
return new BinaryBitmap(new HybridBinarizer(source));
if (inverse) {
return new BinaryBitmap(new HybridBinarizer(source.invert()));
} else {
return new BinaryBitmap(new HybridBinarizer(source));
}
}
}