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xvid edge bug (if i understand the mpeg4 spec correctly) autodetection

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improved edge & padding bug detection for old files
tested with *.avi *.mp4 on my HD

Originally committed as revision 2163 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-08-25 12:50:15 +00:00
parent 802f454e5b
commit 9b6a5b87a6
1 changed files with 18 additions and 22 deletions
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40
libavcodec/h263dec.c
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@ -301,9 +301,9 @@ static int decode_slice(MpegEncContext *s){
return 0;
}
fprintf(stderr, "slice end not reached but screenspace end (%d left %06X)\n",
fprintf(stderr, "slice end not reached but screenspace end (%d left %06X, score= %d)\n",
s->gb.size_in_bits - get_bits_count(&s->gb),
show_bits(&s->gb, 24));
show_bits(&s->gb, 24), s->padding_bug_score);
ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask);
@ -480,28 +480,30 @@ retry:
}
avctx->has_b_frames= !s->low_delay;
if(s->xvid_build==0 && s->divx_version==0 && s->lavc_build==0){
if(s->avctx->codec_tag == ff_get_fourcc("XVID") || s->avctx->codec_tag == ff_get_fourcc("XVIX"))
s->xvid_build= -1;
if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->vo_type==0 && s->vol_control_parameters==0)
s->divx_version= 400; //divx 4
}
if(s->workaround_bugs&FF_BUG_AUTODETECT){
if(s->padding_bug_score > -2 && !s->data_partitioning && !s->resync_marker)
s->workaround_bugs &= ~FF_BUG_NO_PADDING;
if(s->padding_bug_score > -2 && !s->data_partitioning && (s->divx_version || !s->resync_marker))
s->workaround_bugs |= FF_BUG_NO_PADDING;
else
s->workaround_bugs &= ~FF_BUG_NO_PADDING;
if(s->avctx->codec_tag == ff_get_fourcc("XVIX"))
s->workaround_bugs|= FF_BUG_XVID_ILACE;
#if 0
if(s->avctx->codec_tag == ff_get_fourcc("MP4S"))
s->workaround_bugs|= FF_BUG_AC_VLC;
if(s->avctx->codec_tag == ff_get_fourcc("M4S2"))
s->workaround_bugs|= FF_BUG_AC_VLC;
#endif
if(s->avctx->codec_tag == ff_get_fourcc("UMP4")){
s->workaround_bugs|= FF_BUG_UMP4;
s->workaround_bugs|= FF_BUG_AC_VLC;
}
if(s->divx_version){
if(s->divx_version>=500){
s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
}
@ -509,18 +511,15 @@ retry:
s->workaround_bugs|= FF_BUG_QPEL_CHROMA2;
}
if(s->avctx->codec_tag == ff_get_fourcc("XVID") && s->xvid_build==0)
s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
if(s->avctx->codec_tag == ff_get_fourcc("XVID") && s->xvid_build==0)
s->padding_bug_score= 256*256*256*64;
if(s->xvid_build && s->xvid_build<=3)
s->padding_bug_score= 256*256*256*64;
if(s->xvid_build && s->xvid_build<=1)
s->workaround_bugs|= FF_BUG_QPEL_CHROMA;
if(s->xvid_build && s->xvid_build<=12)
s->workaround_bugs|= FF_BUG_EDGE;
#define SET_QPEL_FUNC(postfix1, postfix2) \
s->dsp.put_ ## postfix1 = ff_put_ ## postfix2;\
s->dsp.put_no_rnd_ ## postfix1 = ff_put_no_rnd_ ## postfix2;\
@ -546,9 +545,6 @@ retry:
s->workaround_bugs|= FF_BUG_EDGE;
}
if(s->avctx->codec_tag == ff_get_fourcc("DIVX") && s->divx_version==0 && s->lavc_build==0 && s->xvid_build==0 && s->vo_type==0 && s->vol_control_parameters==0 && s->low_delay)
s->workaround_bugs|= FF_BUG_EDGE;
#if 0
if(s->divx_version==500)
s->padding_bug_score= 256*256*256*64;