static int decode_seq_header(AVSContext *h) { MpegEncContext *s = &h->s; int frame_rate_code; h->profile = get_bits(&s->gb,8); h->level = get_bits(&s->gb,8); skip_bits1(&s->gb); //progressive sequence s->width = get_bits(&s->gb,14); s->height = get_bits(&s->gb,14); skip_bits(&s->gb,2); //chroma format skip_bits(&s->gb,3); //sample_precision h->aspect_ratio = get_bits(&s->gb,4); frame_rate_code = get_bits(&s->gb,4); skip_bits(&s->gb,18);//bit_rate_lower skip_bits1(&s->gb); //marker_bit skip_bits(&s->gb,12);//bit_rate_upper s->low_delay = get_bits1(&s->gb); h->mb_width = (s->width + 15) >> 4; h->mb_height = (s->height + 15) >> 4; h->s.avctx->time_base.den = avpriv_frame_rate_tab[frame_rate_code].num; h->s.avctx->time_base.num = avpriv_frame_rate_tab[frame_rate_code].den; h->s.avctx->width = s->width; h->s.avctx->height = s->height; if(!h->top_qp) ff_cavs_init_top_lines(h); return 0; }