/*! @brief
*
* Start the FPV or Camera H264 Stream
*
* @platforms M210V2, M300
* @Note For M210 V2 series, only OSDK_CAMERA_POSITION_NO_1 and
* OSDK_CAMERA_POSITION_FPV are supported.
* @note For M300, all the poss are supported.
* @param pos point out which camera to output the H264 stream
* @param cb callback function that is called in a callback thread when a new
* h264 frame is received
* @param cbParam a void pointer that users can manipulate inside the callback
* @Return Errorcode of liveivew, ref to DJI::OSDK:: LiveView:: LiveViewErrCode
*/
LiveView:: LiveViewErrCode startH264Stream(LiveView:: LiveViewCameraPosition pos, H264Callback cb, void *userData);