HarmonyOS 相机双路预览，通过ImageReceiver 接收预览流后，怎么获取预览流的角度

private byte[] rotateYUVDegree270(byte[] data, int imageWidth, int imageHeight) { 
  byte[] yuv = new byte[imageWidth * imageHeight * 3 / 2]; 
  // Rotate the Y luma 
  int i = 0; 
  for (int x = imageWidth - 1; x >= 0; x--) { 
    for (int y = 0; y < imageHeight; y++) { 
      yuv[i] = data[y * imageWidth + x]; 
      i++; 
    } 
  }// Rotate the U and V color components 
  i = imageWidth * imageHeight; 
  for (int x = imageWidth - 1; x > 0; x = x - 2) { 
    for (int y = 0; y < imageHeight / 2; y++) { 
      yuv[i] = data[(imageWidth * imageHeight) + (y * imageWidth) + (x - 1)]; 
      i++; 
      yuv[i] = data[(imageWidth * imageHeight) + (y * imageWidth) + x]; 
      i++; 
    } 
  } 
  return yuv; 
}

private byte[] rotateYUVDegree270(byte[] data, int imageWidth, int imageHeight) { 
  byte[] yuv = new byte[imageWidth * imageHeight * 3 / 2]; 
  // Rotate the Y luma 
  int i = 0; 
  for (int x = imageWidth - 1; x >= 0; x--) { 
    for (int y = 0; y < imageHeight; y++) { 
      yuv[i] = data[y * imageWidth + x]; 
      i++; 
    } 
  }// Rotate the U and V color components 
  i = imageWidth * imageHeight; 
  for (int x = imageWidth - 1; x > 0; x = x - 2) { 
    for (int y = 0; y < imageHeight / 2; y++) { 
      yuv[i] = data[(imageWidth * imageHeight) + (y * imageWidth) + (x - 1)]; 
      i++; 
      yuv[i] = data[(imageWidth * imageHeight) + (y * imageWidth) + x]; 
      i++; 
    } 
  } 
  return yuv; 
}