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MV visualisation support

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Originally committed as revision 442 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-05-05 01:39:07 +00:00
parent 3d1d9b2c37
commit 3649cfd9b3
1 changed files with 34 additions and 1 deletions
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35
libavcodec/h263dec.c
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@ -260,7 +260,40 @@ static int h263_decode_frame(AVCodecContext *avctx,
}
MPV_frame_end(s);
#if 0 //dirty show MVs, we should export the MV tables and write a filter to show them
{
int mb_y;
s->has_b_frames=1;
for(mb_y=0; mb_y<s->mb_height; mb_y++){
int mb_x;
int y= mb_y*16;
for(mb_x=0; mb_x<s->mb_width; mb_x++){
int x= mb_x*16;
uint8_t *ptr= s->last_picture[0];
int xy= 1 + mb_x*2 + (mb_y*2 + 1)*(s->mb_width*2 + 2);
int mx= (s->motion_val[xy][0]>>1) + x;
int my= (s->motion_val[xy][1]>>1) + y;
int i;
int max;
if(mx<0) mx=0;
if(my<0) my=0;
if(mx>=s->width) mx= s->width -1;
if(my>=s->height) my= s->height-1;
max= ABS(mx-x);
if(ABS(my-y) > max) max= ABS(my-y);
/* the ugliest linedrawing routine ... */
for(i=0; i<max; i++){
int x1= x + (mx-x)*i/max;
int y1= y + (my-y)*i/max;
ptr[y1*s->linesize + x1]+=100;
}
s->mbskip_table[mb_x + mb_y*s->mb_width]=0;
}
}
}
#endif
if(s->pict_type==B_TYPE || (!s->has_b_frames)){
pict->data[0] = s->current_picture[0];
pict->data[1] = s->current_picture[1];