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rv20 sub_id == 0x20200002 support

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Originally committed as revision 2546 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-11-30 18:08:35 +00:00
parent 43dc0bfd2e
commit 473c7582a5
1 changed files with 24 additions and 14 deletions
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38
libavcodec/rv10.c
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@ -339,18 +339,20 @@ static int rv10_decode_picture_header(MpegEncContext *s)
static int rv20_decode_picture_header(MpegEncContext *s)
{
int pb_frame, seq, mb_pos;
int i;
int seq, mb_pos, i;
if (get_bits(&s->gb, 1))
s->pict_type = P_TYPE;
else
s->pict_type = I_TYPE;
pb_frame = get_bits(&s->gb, 2);
if (pb_frame){
av_log(s->avctx, AV_LOG_ERROR, "pb frame not supported\n");
i= get_bits(&s->gb, 2);
switch(i){
case 0: s->pict_type= I_TYPE; break;
case 2: s->pict_type= P_TYPE; break;
case 3: s->pict_type= B_TYPE; break;
default:
av_log(s->avctx, AV_LOG_ERROR, "unknown frame type\n");
return -1;
}
if (get_bits(&s->gb, 1)){
av_log(s->avctx, AV_LOG_ERROR, "unknown bit set\n");
return -1;
}
@ -359,8 +361,11 @@ static int rv20_decode_picture_header(MpegEncContext *s)
av_log(s->avctx, AV_LOG_ERROR, "error, qscale:0\n");
return -1;
}
seq= get_bits(&s->gb, 8);
if(s->avctx->sub_id == 0x20200002)
seq= get_bits(&s->gb, 16);
else
seq= get_bits(&s->gb, 8);
for(i=0; i<6; i++){
if(s->mb_width*s->mb_height < ff_mba_max[i]) break;
@ -379,10 +384,15 @@ static int rv20_decode_picture_header(MpegEncContext *s)
// s->modified_quant=1;
if(s->avctx->debug & FF_DEBUG_PICT_INFO){
av_log(s->avctx, AV_LOG_INFO, "num:%3d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n",
av_log(s->avctx, AV_LOG_INFO, "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n",
seq, s->mb_x, s->mb_y, s->pict_type, s->qscale, s->no_rounding);
}
if (s->pict_type == B_TYPE){
av_log(s->avctx, AV_LOG_ERROR, "b frame not supported\n");
return -1;
}
return s->mb_width*s->mb_height - mb_pos;
}