ff_v4l2_buffer_avframe_to_buf  109 libavcodec/v4l2_buffers.h int ff_v4l2_buffer_avframe_to_buf(const AVFrame *frame, V4L2Buffer *out);
ff_v4l2_buffer_avframe_to_buf  604 libavcodec/v4l2_context.c     ret = ff_v4l2_buffer_avframe_to_buf(frame, avbuf);