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Support for BI-frames in Advanced Profile

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Originally committed as revision 6211 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2006-09-09 11:32:36 +00:00
parent d429c98208
commit 767516533d
1 changed files with 8 additions and 3 deletions
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11
libavcodec/vc1.c
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@ -1326,7 +1326,7 @@ static int decode_entry_point(AVCodecContext *avctx, GetBitContext *gb)
av_log(avctx, AV_LOG_DEBUG, "Entry point: %08X\n", show_bits_long(gb, 32));
get_bits1(gb); // broken link
get_bits1(gb); // closed entry
avctx->max_b_frames = 1 - get_bits1(gb); // 'closed entry' also signalize possible B-frames
v->panscanflag = get_bits1(gb);
get_bits1(gb); // refdist flag
v->s.loop_filter = get_bits1(gb);
@ -1592,8 +1592,7 @@ static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
break;
case 3:
v->s.pict_type = BI_TYPE;
return -1;
// break;
break;
case 4:
v->s.pict_type = P_TYPE; // skipped pic
v->p_frame_skipped = 1;
@ -1636,6 +1635,7 @@ static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
switch(v->s.pict_type) {
case I_TYPE:
case BI_TYPE:
status = bitplane_decoding(v->acpred_plane, &v->acpred_is_raw, v);
if (status < 0) return -1;
av_log(v->s.avctx, AV_LOG_DEBUG, "ACPRED plane encoding: "
@ -1756,6 +1756,11 @@ static int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb)
vop_dquant_decoding(v);
}
v->bi_type = 0;
if(v->s.pict_type == BI_TYPE) {
v->s.pict_type = B_TYPE;
v->bi_type = 1;
}
return 0;
}