av_frame_get_plane_buffer  436 libavfilter/af_join.c         buf = av_frame_get_plane_buffer(cur, ch->in_channel_idx);
av_frame_get_plane_buffer  234 libavfilter/vf_pad.c         if (av_frame_get_plane_buffer(frame, i) == buf)
av_frame_get_plane_buffer  742 libavutil/frame.h AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane);