djiYuvCallback.java

public class foo{
      private DJICodecManager.YuvDataCallback frameListener;
      private DJICodecManager codecManager = null;

  
   private void createCodecManager(){
        frameListener = new DJICodecManager.YuvDataCallback() {
          @Override
          public void onYuvDataReceived(MediaFormat mediaFormat, ByteBuffer byteBuffer, int i, int i1, int i2) {
            // You have your frame byteBuffer here (it is indirect buffer)
            // To get bitmap you have to decode YUV frame
          }
        }
     
     
     // mContext is activity or application context, you should pass it here somehow (I use the constructor)
     // Ignore DJIYVUWidth and DJIYVUHeight, whatever you pass SDK ignores it!
     codecManager = new DJICodecManager(mContext, null, DJIYVUWidth, DJIYVUHeight, UsbAccessoryService.VideoStreamSource.Camera);
     codecManager.enabledYuvData(true);
     codecManager.setYuvDataCallback(frameListener);
   }
  
}