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Zero MV vectors for P frame intra blocks

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Originally committed as revision 8440 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2007-03-18 18:07:27 +00:00
parent edf97a75f9
commit 9a44385e1a
1 changed files with 12 additions and 1 deletions
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13
libavcodec/vc1.c
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@ -1068,8 +1068,11 @@ static void vc1_mc_4mv_chroma(VC1Context *v)
for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;}
tx = (mvx[t1] + mvx[t2]) / 2;
ty = (mvy[t1] + mvy[t2]) / 2;
} else
} else {
s->current_picture.motion_val[1][s->block_index[0]][0] = 0;
s->current_picture.motion_val[1][s->block_index[0]][1] = 0;
return; //no need to do MC for inter blocks
}
s->current_picture.motion_val[1][s->block_index[0]][0] = tx;
s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
@ -2004,6 +2007,8 @@ static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, i
if(s->mb_intra){
s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0;
s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0;
s->current_picture.motion_val[1][xy][0] = 0;
s->current_picture.motion_val[1][xy][1] = 0;
if(mv1) { /* duplicate motion data for 1-MV block */
s->current_picture.motion_val[0][xy + 1][0] = 0;
s->current_picture.motion_val[0][xy + 1][1] = 0;
@ -2011,6 +2016,12 @@ static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, i
s->current_picture.motion_val[0][xy + wrap][1] = 0;
s->current_picture.motion_val[0][xy + wrap + 1][0] = 0;
s->current_picture.motion_val[0][xy + wrap + 1][1] = 0;
s->current_picture.motion_val[1][xy + 1][0] = 0;
s->current_picture.motion_val[1][xy + 1][1] = 0;
s->current_picture.motion_val[1][xy + wrap][0] = 0;
s->current_picture.motion_val[1][xy + wrap][1] = 0;
s->current_picture.motion_val[1][xy + wrap + 1][0] = 0;
s->current_picture.motion_val[1][xy + wrap + 1][1] = 0;
}
return;
}