bluewallet/react-native-camera
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fix(android): support inverted qrcode for RCTCamera (#2167)

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Yori Zhao 2019-03-26 19:56:44 +08:00 committed by Sibelius Seraphini
parent 7571099abc
commit 07f55ae102
1 changed files with 26 additions and 11 deletions
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37
android/src/main/java/com/lwansbrough/RCTCamera/RCTCameraViewFinder.java
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@ -133,7 +133,7 @@ class RCTCameraViewFinder extends TextureView implements TextureView.SurfaceText
public void setZoom(int zoom) {
RCTCamera.getInstance().setZoom(_cameraType, zoom);
}
}
public void startPreview() {
if (_surfaceTexture != null) {
@ -332,11 +332,16 @@ class RCTCameraViewFinder extends TextureView implements TextureView.SurfaceText
this.imageData = imageData;
}
private Result getBarcode(int width, int height) {
private Result getBarcode(int width, int height, boolean inverse) {
try{
PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(imageData, width, height, 0, 0, width, height, false);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
return _multiFormatReader.decodeWithState(bitmap);
PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(imageData, width, height, 0, 0, width, height, false);
BinaryBitmap bitmap;
if (inverse) {
bitmap = new BinaryBitmap(new HybridBinarizer(source.invert()));
} else {
bitmap = new BinaryBitmap(new HybridBinarizer(source));
}
return _multiFormatReader.decodeWithState(bitmap);
} catch (Throwable t) {
// meh
} finally {
@ -350,15 +355,25 @@ class RCTCameraViewFinder extends TextureView implements TextureView.SurfaceText
int width = size.width;
int height = size.height;
Result result = getBarcode(width, height);
if (result != null)
return result;
Result result = getBarcode(width, height, false);
if (result != null) {
return result;
}
// inverse
result = getBarcode(width, height, true);
if (result != null) {
return result;
}
// rotate
rotateImage(width, height);
width = size.height;
height = size.width;
result = getBarcode(width, height, false);
if (result != null) {
return result;
}
return getBarcode(width, height, true);
return getBarcode(width, height);
}
private void rotateImage(int width, int height) {
@ -401,7 +416,7 @@ class RCTCameraViewFinder extends TextureView implements TextureView.SurfaceText
resultPoints.pushMap(newPoint);
}
}
event.putArray("bounds", resultPoints);
event.putString("data", result.getText());
event.putString("type", result.getBarcodeFormat().toString());