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h264: Fix invalid interlaced/progressive MB combinations for direct mode prediction.

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
pull/3/merge
Michael Niedermayer 13 years ago committed by Ronald S. Bultje
parent 64334ddbbc
commit 758ec11153
1 changed files with 8 additions and 0 deletions
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  1. 8
      libavcodec/h264_direct.c

8
libavcodec/h264_direct.c
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@ -253,6 +253,10 @@ static void pred_spatial_direct_motion(H264Context * const h, int *mb_type){
mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy + s->mb_stride]; mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy + s->mb_stride];
b8_stride = 2+4*s->mb_stride; b8_stride = 2+4*s->mb_stride;
b4_stride *= 6; b4_stride *= 6;
if (IS_INTERLACED(mb_type_col[0]) != IS_INTERLACED(mb_type_col[1])) {
mb_type_col[0] &= ~MB_TYPE_INTERLACED;
mb_type_col[1] &= ~MB_TYPE_INTERLACED;
}
sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ sub_mb_type |= MB_TYPE_16x16|MB_TYPE_DIRECT2; /* B_SUB_8x8 */
if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA) if( (mb_type_col[0] & MB_TYPE_16x16_OR_INTRA)
@ -439,6 +443,10 @@ static void pred_temp_direct_motion(H264Context * const h, int *mb_type){
mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy + s->mb_stride]; mb_type_col[1] = h->ref_list[1][0].f.mb_type[mb_xy + s->mb_stride];
b8_stride = 2+4*s->mb_stride; b8_stride = 2+4*s->mb_stride;
b4_stride *= 6; b4_stride *= 6;
if (IS_INTERLACED(mb_type_col[0]) != IS_INTERLACED(mb_type_col[1])) {
mb_type_col[0] &= ~MB_TYPE_INTERLACED;
mb_type_col[1] &= ~MB_TYPE_INTERLACED;
}
sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */

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