SKIP_VLCBUF_BYTES
int frame_len = frame->vlc_len - SKIP_VLCBUF_BYTES;
u8 vlc_first_byte = ((u8 *)(frame->vlc.addr + SKIP_VLCBUF_BYTES))[0];
src = frame->vlc.addr + SKIP_VLCBUF_BYTES + 1;