Java PlanarYUVLuminanceSource類代碼示例

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
    int previewWidth = camera.getParameters().getPreviewSize().width;
    int previewHeight = camera.getParameters().getPreviewSize().height;

    PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(
            data, previewWidth, previewHeight, 0, 0, previewWidth,
            previewHeight, false);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    Reader reader = new QRCodeReader();
    try {

        Result result = reader.decode(bitmap);
        String text = result.getText();

        Intent intent = new Intent();
        intent.setData(Uri.parse(text));
        setResult(RESULT_OK, intent);
        finish();
    } catch (Exception e) {
        e.printStackTrace();
        Toast.makeText(getApplicationContext(), "Not Found",
                Toast.LENGTH_SHORT).show();
    }
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
public String decodeWithZxing(byte[] data, int width, int height, Rect crop) {
    MultiFormatReader multiFormatReader = new MultiFormatReader();
    multiFormatReader.setHints(changeZXingDecodeDataMode());

    Result rawResult = null;
    PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data, width, height,
            crop.left, crop.top, crop.width(), crop.height(), false);

    if (source != null) {
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        try {
            rawResult = multiFormatReader.decodeWithState(bitmap);
        } catch (ReaderException re) {
            // continue
        } finally {
            multiFormatReader.reset();
        }
    }

    return rawResult != null ? rawResult.getText() : null;
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
private Result decode(byte[] data, int width, int height, Rect rect, boolean rotate) {
    PlanarYUVLuminanceSource source;
    if (rotate) {//zxing豎屏下無法識別一維碼，對數據旋轉
        byte[] rotatedData = new byte[data.length];
        for (int y = 0; y < height; y++) {
            for (int x = 0; x < width; x++)
                rotatedData[x * height + height - y - 1] = data[x + y * width];
        }
        int tmp = width;
        width = height;
        height = tmp;
        data = rotatedData;
        Rect rotedRect = new Rect(width - rect.bottom, rect.left, width - rect.top, rect.right);
        source = buildLuminanceSource(data, width, height, rotedRect);
    } else {
        source = buildLuminanceSource(data, width, height, rect);
    }

    return decode(source);
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
public static Result decodeImage(final String path) {
        Bitmap bitmap = QrUtils.decodeSampledBitmapFromFile(path, 256, 256);
        // Google Photo 相冊中選取雲照片是會出現 Bitmap == null
        if (bitmap == null) return null;
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        int[] pixels = new int[width * height];
        bitmap.getPixels(pixels, 0, width, 0, 0, width, height);
//                RGBLuminanceSource source = new RGBLuminanceSource(width, height, pixels);
        PlanarYUVLuminanceSource source1 = new PlanarYUVLuminanceSource(getYUV420sp(width, height, bitmap), width, height, 0, 0, width, height, false);
        BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source1));
//                BinaryBitmap binaryBitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source1));
        HashMap<DecodeHintType, Object> hints = new HashMap<>();

        hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
        hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");

        try {
            return new MultiFormatReader().decode(binaryBitmap, hints);
        } catch (NotFoundException e) {
            e.printStackTrace();
        }
        return null;
    }
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
/**
 * A factory method to build the appropriate LuminanceSource object based on the format
 * of the preview buffers, as described by Camera.Parameters.
 *
 * @param data A preview frame.
 * @param width The width of the image.
 * @param height The height of the image.
 * @return A PlanarYUVLuminanceSource instance.
 */
public PlanarYUVLuminanceSource buildLuminanceSource(byte[] data, int width, int height) {
  Rect rect = getFramingRectInPreview();
  if (rect == null) {
    return null;
  }
  
  //this if saves the app from crashing when switching orientation........
  //finally debugged the biggest problem ...yippee
  if (rect.left + rect.width() > width || rect.top + rect.height() > height)
  	return new PlanarYUVLuminanceSource(data, height, width, rect.left, rect.top,
              rect.width(), rect.height(), false);
  
  // Go ahead and assume it's YUV rather than die.
  return new PlanarYUVLuminanceSource(data, width, height, rect.left, rect.top,
                                      rect.width(), rect.height(), false);
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
/**
 * Called as preview frames are displayed.  This callback is invoked
 * on the event thread open(int) was called from.
 * <p/>
 * <p>If using the {@link ImageFormat#YV12} format,
 * refer to the equations in {@link Camera.Parameters#setPreviewFormat}
 * for the arrangement of the pixel data in the preview callback
 * buffers.
 *
 * @param data   the contents of the preview frame in the format defined
 *               by {@link ImageFormat}, which can be queried
 *               with {@link Camera.Parameters#getPreviewFormat()}.
 *               If {@link Camera.Parameters#setPreviewFormat(int)}
 *               is never called, the default will be the YCbCr_420_SP
 *               (NV21) format.
 * @param camera the Camera service object.
 */
@Override
public void onPreviewFrame(byte[] data, Camera camera) {

    // get the size of the picture
    int frameHeight = camera.getParameters().getPreviewSize().height;
    int frameWidth = camera.getParameters().getPreviewSize().width;

    // create new Luminance Source
    final PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data, frameWidth, frameHeight, 0, 0, frameWidth, frameHeight);

    // convert to binary bitmap which can be used by our image decoder
    final BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(source));

    // set self as listener, and start decode image
    DecodeImageTask decodeImageTask = new DecodeImageTask();
    decodeImageTask.setCallbackListener(this);
    decodeImageTask.execute(binaryBitmap);
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
public PlanarYUVLuminanceSource buildLuminanceSource(byte[] data, int width, int height) {
  byte[] rotatedData = new byte[data.length];
  int rotation = context.getApplicationContext().getResources().getConfiguration().orientation;
  if (rotation == Configuration.ORIENTATION_PORTRAIT) {
    for (int y = 0; y < height; y++) {
      for (int x = 0; x < width; x++) {
        rotatedData[x * height + height - y - 1] = data[x + y * width];
      }
    }
    int tmp = width;
    width = height;
    height = tmp;
  } else {
    rotatedData = null;
  }

  Rect rect = getFramingRectInPreview();
  if (rect == null) {
    return null;
  }
  // Go ahead and assume it's YUV rather than die.
  return new PlanarYUVLuminanceSource(rotation == Configuration.ORIENTATION_PORTRAIT ? rotatedData : data, width, height, rect.left, rect.top,
      rect.width(), rect.height(), false);
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
public PlanarYUVLuminanceSource buildLuminanceSource(byte[] rotatedData, int width, int height, boolean horizontal) {
    Rect rect = getFramingRectInPreview(horizontal);
    int previewFormat = mCameraConfig.getPreviewFormat();
    String previewFormatString = mCameraConfig.getPreviewFormatString();
    switch (previewFormat) {
        // This is the standard Android format which all devices are REQUIRED to support.
        // In theory, it's the only one we should ever care about.
        case PixelFormat.YCbCr_420_SP:
            // This format has never been seen in the wild, but is compatible as we only care
            // about the Y channel, so allow it.
        case PixelFormat.YCbCr_422_SP:
            return new PlanarYUVLuminanceSource(rotatedData, width, height, rect.left, rect.top,
                    rect.width(), rect.height(), horizontal);
        default:
            // The Samsung Moment incorrectly uses this variant instead of the 'sp' version.
            // Fortunately, it too has all the Y data up front, so we can read it.
            if ("yuv420p".equals(previewFormatString)) {
                return new PlanarYUVLuminanceSource(rotatedData, width, height, rect.left, rect.top,
                        rect.width(), rect.height(), horizontal);
            }
    }
    throw new IllegalArgumentException("Unsupported picture format: " +
            previewFormat + '/' + previewFormatString);

}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
private String decode(byte[] data, int width, int height) {
    ScannerManager manager = mManager.get();
    if (manager == null) {
        return null;
    }
    Rect rect = manager.getFramingRectInPreview();
    PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data,
            width, height, rect.left, rect.top, rect.right, rect.bottom, false);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap, mHints);
        return result.getText();
    } catch (ReaderException e) {
        // Ignore as we will repeatedly decode the preview frame
        return null;
    }
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
private synchronized PlanarYUVLuminanceSource rotate90(byte[] data, int dataWidth, Rect rect) {
  int sourceWidth = rect.width();
  int sourceHeight = rect.height();
  int desiredSize = sourceHeight * sourceWidth;
  if (destDataCache.length != desiredSize) {
    destDataCache = new byte[desiredSize];
  }
  byte[] destData = destDataCache;
  int destOffset = 0;
  for (int sourceX = 0; sourceX < sourceWidth; sourceX++) {
    int sourceOffset = (rect.bottom - 1) * dataWidth + rect.left + sourceX;
    for (int sourceY = sourceHeight - 1; sourceY >= 0; sourceY--) {
      destData[destOffset++] = data[sourceOffset];
      sourceOffset -= dataWidth;
    }
  }
  return new PlanarYUVLuminanceSource(destData,
                                      sourceHeight,
                                      sourceWidth,
                                      0,
                                      0,
                                      sourceHeight,
                                      sourceWidth,
                                      false);
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
private synchronized PlanarYUVLuminanceSource rotate180(byte[] data, int dataWidth, Rect rect) {
  int sourceWidth = rect.width();
  int sourceHeight = rect.height();
  int desiredSize = sourceHeight * sourceWidth;
  if (destDataCache.length != desiredSize) {
    destDataCache = new byte[desiredSize];
  }
  byte[] destData = destDataCache;
  int destOffset = 0;

  for (int sourceY = sourceHeight - 1; sourceY >= 0; sourceY--) {
    int sourceOffset = rect.left + sourceWidth - 1 + (rect.top + sourceY) * dataWidth;
    for (int sourceX = sourceWidth - 1; sourceX >= 0; sourceX--) {
      destData[destOffset++] = data[sourceOffset--];
    }
  }
  return new PlanarYUVLuminanceSource(destData,
                                      sourceWidth,
                                      sourceHeight,
                                      0,
                                      0,
                                      sourceWidth,
                                      sourceHeight,
                                      false);
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
private synchronized PlanarYUVLuminanceSource rotate270(byte[] data, int dataWidth, Rect rect) {
  int sourceWidth = rect.width();
  int sourceHeight = rect.height();
  int desiredSize = sourceHeight * sourceWidth;
  if (destDataCache.length != desiredSize) {
    destDataCache = new byte[desiredSize];
  }
  byte[] destData = destDataCache;
  int destOffset = 0;
  for (int sourceX = sourceWidth - 1; sourceX >= 0; sourceX--) {
    int sourceOffset = rect.left + sourceX + rect.top * dataWidth;
    for (int sourceY = 0; sourceY < sourceHeight; sourceY++) {
      destData[destOffset++] = data[sourceOffset];
      sourceOffset += dataWidth;
    }
  }
  return new PlanarYUVLuminanceSource(destData,
                                      sourceHeight,
                                      sourceWidth,
                                      0,
                                      0,
                                      sourceHeight,
                                      sourceWidth,
                                      false);
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
@Override
     public void onPreviewFrame(byte[] data, Camera camera) {
         // TODO Auto-generated method stub
     	
     	if (mDialog.isShowing())
     		return;
     	
     	LuminanceSource source = new PlanarYUVLuminanceSource(data, mWidth, mHeight, mLeft, mTop, mAreaWidth, mAreaHeight, false);
         BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(
           source));
         Result result;
       
         try {
	result = mMultiFormatReader.decode(bitmap, null);
	if (result != null) {
		mDialog.setTitle("Result");
		mDialog.setMessage(result.getText());
		mDialog.show();
	}
} catch (NotFoundException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
}
     }
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
private void scan(byte[] data, int width, int height) {
  // END:scan
  Log.d(TAG, "scan");
  // START:scan
  PlanarYUVLuminanceSource luminanceSource = new PlanarYUVLuminanceSource(data,
      width, height, 0, 0, width, height, false);
  // END:scan
  // new ScanTask().execute(luminanceSource); // uncomment to use ScanTask
  // START:scan
  BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(luminanceSource));
  Result result = null;
  try {
    result = multiFormatReader.decodeWithState(bitmap);
  } catch (ReaderException re) { // nothing found to decode
  } finally {
    multiFormatReader.reset();
  }
  if (result != null) {
    Intent intent = new QRIntentBuilder(result.getText()).buildIntent();
    activity.launchIntent(intent);
  }
}
 

import com.google.zxing.PlanarYUVLuminanceSource; //導入依賴的package包/類
/**
 * A factory method to build the appropriate LuminanceSource object based on the format
 * of the preview buffers, as described by Camera.Parameters.
 *
 * @param data   A preview frame.
 * @param width  The width of the image.
 * @param height The height of the image.
 * @return A PlanarYUVLuminanceSource instance.
 */
public synchronized PlanarYUVLuminanceSource buildLuminanceSource(byte[] data, int width, int height, Rect boundingRect) {
    switch (orientation) {
        case 0:
            //data = flip(data);
            break;
        case 90:
            rotate90(data, width, height);
            return new PlanarYUVLuminanceSource(data, height, width, boundingRect.top, boundingRect.left,
                    boundingRect.height(), boundingRect.width(), false);

        case 180:
            break;
        case 270:
            rotate90(data, width, height);
            break;
    }

    return new PlanarYUVLuminanceSource(data, width, height, boundingRect.left, boundingRect.top,
            boundingRect.width(), boundingRect.height(), false);
}