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Code Issues Releases Activity

interlaced chroma MC divx-bug workaround

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Originally committed as revision 2947 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-04-02 19:54:33 +00:00
parent 8680741006
commit b44bdf7eec
3 changed files with 14 additions and 3 deletions
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1
libavcodec/avcodec.h
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@ -840,6 +840,7 @@ typedef struct AVCodecContext {
#define FF_BUG_QPEL_CHROMA2 256
#define FF_BUG_DIRECT_BLOCKSIZE 512
#define FF_BUG_EDGE 1024
#define FF_BUG_HPEL_CHROMA 2048
//#define FF_BUG_FAKE_SCALABILITY 16 //autodetection should work 100%
/**

2
libavcodec/h263dec.c
View File

@ -551,6 +551,8 @@ retry:
s->workaround_bugs|= FF_BUG_EDGE;
}
if(s->divx_version)
s->workaround_bugs|= FF_BUG_HPEL_CHROMA;
#if 0
if(s->divx_version==500)
s->padding_bug_score= 256*256*256*64;

14
libavcodec/mpegvideo.c
View File

@ -2430,9 +2430,17 @@ if(s->quarter_sample)
src_y = s->mb_y*(16>>field_based) + (motion_y >> 1);
if (s->out_format == FMT_H263) {
uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
uvsrc_x = src_x>>1;
uvsrc_y = src_y>>1;
if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
mx = (motion_x>>1)|(motion_x&1);
my = motion_y >>1;
uvdxy = ((my & 1) << 1) | (mx & 1);
uvsrc_x = s->mb_x* 8 + (mx >> 1);
uvsrc_y = s->mb_y*(8>>field_based) + (my >> 1);
}else{
uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
uvsrc_x = src_x>>1;
uvsrc_y = src_y>>1;
}
} else {
mx = motion_x / 2;
my = motion_y / 2;