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segfault fix

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Originally committed as revision 4491 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-08-04 22:46:27 +00:00
parent d2f820a5cd
commit 804b0dac58
1 changed files with 5 additions and 2 deletions
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7
libavcodec/wmv2.c
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@ -513,9 +513,12 @@ static int16_t *wmv2_pred_motion(Wmv2Context *w, int *px, int *py){
B = s->current_picture.motion_val[0][xy - wrap];
C = s->current_picture.motion_val[0][xy + 2 - wrap];
diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag)
diff= FFMAX(ABS(A[0] - B[0]), ABS(A[1] - B[1]));
else
diff=0;
if(s->mb_x && !s->first_slice_line && !s->mspel && w->top_left_mv_flag && diff >= 8)
if(diff >= 8)
type= get_bits1(&s->gb);
else
type= 2;