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[feat]add invert color qrcode scan #581

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[feat]add invert color qrcode scan #581

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22 changes: 20 additions & 2 deletions zxing/src/main/java/cn/bingoogolapple/qrcode/zxing/ZXingView.java
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.PlanarYUVLuminanceSource;
import com.google.zxing.Result;
Expand All @@ -27,6 +28,8 @@
public class ZXingView extends QRCodeView {
private MultiFormatReader mMultiFormatReader;
private Map<DecodeHintType, Object> mHintMap;
private boolean isInvertSupported = false;
private long counter = 0;

public ZXingView(Context context, AttributeSet attributeSet) {
this(context, attributeSet, 0);
Expand Down Expand Up @@ -75,6 +78,16 @@ public void setType(BarcodeType barcodeType, Map<DecodeHintType, Object> hintMap
setupReader();
}

public void enableInvertCode() {
isInvertSupported = true;
}

@Override
public void startSpot() {
counter = 0;
super.startSpot();
}

@Override
protected ScanResult processBitmapData(Bitmap bitmap) {
return new ScanResult(QRCodeDecoder.syncDecodeQRCode(bitmap));
Expand All @@ -85,8 +98,9 @@ protected ScanResult processData(byte[] data, int width, int height, boolean isR
Result rawResult = null;
Rect scanBoxAreaRect = null;

counter++;
try {
PlanarYUVLuminanceSource source;
LuminanceSource source;
scanBoxAreaRect = mScanBoxView.getScanBoxAreaRect(height);
if (scanBoxAreaRect != null) {
source = new PlanarYUVLuminanceSource(data, width, height, scanBoxAreaRect.left, scanBoxAreaRect.top, scanBoxAreaRect.width(),
Expand All @@ -95,6 +109,10 @@ protected ScanResult processData(byte[] data, int width, int height, boolean isR
source = new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
}

if (counter % 2 == 0 && isInvertSupported) {
source = source.invert();
}

rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new GlobalHistogramBinarizer(source)));
if (rawResult == null) {
rawResult = mMultiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(source)));
Expand Down Expand Up @@ -141,4 +159,4 @@ protected ScanResult processData(byte[] data, int width, int height, boolean isR
private boolean isNeedAutoZoom(BarcodeFormat barcodeFormat) {
return isAutoZoom() && barcodeFormat == BarcodeFormat.QR_CODE;
}
}
}