YUV格式的视频数据，demo麻烦可以补充完整吗

[shucheng7zhong]

• (void)videoCaptureOutputDataCallback:(CMSampleBufferRef)sampleBuffer {
  if(captureYuvFrame) {
  CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
  CVPixelBufferLockBaseAddress(imageBuffer, 0);
  const uint8_t* dataY = (const uint8_t*)CVPixelBufferGetBaseAddressOfPlane(imageBuffer, 0);//YYYYYYYY
  size_t strideY = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer, 0);
  const uint8_t* dataUV = (const uint8_t*)CVPixelBufferGetBaseAddressOfPlane(imageBuffer, 1);//UVUVUVUV
  size_t strideUV = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer, 1);
  size_t width = CVPixelBufferGetWidth(imageBuffer);
  size_t height = CVPixelBufferGetHeight(imageBuffer);

  // todo render nv12
  CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
  

  } else {
  //
  CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
  CVPixelBufferLockBaseAddress(imageBuffer, 0);
  auto width = CVPixelBufferGetWidth(imageBuffer);
  auto height = CVPixelBufferGetHeight(imageBuffer);
  auto stride = CVPixelBufferGetBytesPerRow(imageBuffer)/4;
  auto pixels = (const uint8_t )CVPixelBufferGetBaseAddress(imageBuffer);
  gpuPixelRawInput->uploadBytes(pixels, width, height, stride);
  CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
  }
  }
  按我的理解captureYuvFrame == YES时，应该也有类似 gpuPixelRawInput->uploadBytes(pixels, width, height, stride);
  这样的数据输入逻辑，我这边自己设置
  CVImageBufferRef imageBuffer = CMSampleBufferGetImageBuffer(sampleBuffer);
  CVPixelBufferLockBaseAddress(imageBuffer, 0);
  const uint8_t dataY = (const uint8_t*)CVPixelBufferGetBaseAddressOfPlane(imageBuffer, 0);//YYYYYYYY
  size_t strideY = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer, 0);
  const uint8_t* dataU = (const uint8_t*)CVPixelBufferGetBaseAddressOfPlane(imageBuffer, 1);//UVUVUVUV
  size_t strideU = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer, 1);
  const uint8_t* dataV = (const uint8_t*)CVPixelBufferGetBaseAddressOfPlane(imageBuffer, 2);//UVUVUVUV
  size_t strideV = CVPixelBufferGetBytesPerRowOfPlane(imageBuffer, 2);
  size_t width = CVPixelBufferGetWidth(imageBuffer);
  size_t height = CVPixelBufferGetHeight(imageBuffer);
  gpuPixelRawInput->uploadBytes(width, height, dataY, strideY, dataU, strideU, dataV, strideV);
  CVPixelBufferUnlockBaseAddress(imageBuffer, 0);
  得到的结果视频效果是花屏效果，麻烦请补充一下YUV格式的demo示例代码