public String attemptDecodePicture(Bitmap thumbnail) {
if (thumbnail == null) {
Log.d(TAG, "No picture selected");
} else {
Log.d(TAG, "Picture selected");
Result rawResult = null;
Reader reader = new QRCodeReader();
int w = thumbnail.getWidth();
int h = thumbnail.getHeight();
int maxOneDimension = 500;
if (w * h > maxOneDimension * maxOneDimension) { // too big, reduce
float bitmapRatio = (float) w / (float) h;
if (bitmapRatio > 0) {
w = maxOneDimension;
h = (int) (w / bitmapRatio);
} else {
h = maxOneDimension;
w = (int) (h * bitmapRatio);
}
thumbnail = Bitmap.createScaledBitmap(thumbnail, w, h, true);
}
int[] pixels = new int[w * h];
thumbnail.getPixels(pixels, 0, w, 0, 0, w, h);
RGBLuminanceSource source = new RGBLuminanceSource(w, h, pixels);
if (source.getMatrix() != null) {
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
try {
rawResult = reader.decode(bitmap);
} catch (ReaderException re) {
re.printStackTrace();
} finally {
reader.reset();
}
}
if (rawResult != null) {
Log.d(TAG, "QR code found " + rawResult.getText());
return rawResult.getText();
} else {
Log.d(TAG, "Picture No QR code found");
}
}
return null;
}
public String attemptDecodeBytes(byte[] bytes, Camera camera) {
Result rawResult = null;
Reader reader = new QRCodeReader();
int w = camera.getParameters().getPreviewSize().width;
int h = camera.getParameters().getPreviewSize().height;
PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(bytes, w, h, 0, 0, w, h, false);
if (source.getMatrix() != null) {
BinaryBitmap bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
try {
rawResult = reader.decode(bitmap);
} catch (ReaderException re) {
// nothing to do here
} finally {
reader.reset();
}
}
if (rawResult != null) {
Log.d(TAG, "QR code found " + rawResult.getText());
return rawResult.getText();
} else {
return null;
}
}
// @Override
public void reset() {
delegate.reset();
}
