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Code Issues Releases Activity

It turned out that RV30 uses motion vectors for forward motion B-frame

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macroblocks to predict motion vectors for backward motion B-frame macroblocks
and vice versa.

Originally committed as revision 16381 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2008-12-29 10:20:03 +00:00
parent e4f1ec3a4c
commit 592beefe99
1 changed files with 5 additions and 5 deletions
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10
libavcodec/rv34.c
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@ -564,7 +564,7 @@ static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir)
MpegEncContext *s = &r->s;
int mv_pos = s->mb_x * 2 + s->mb_y * 2 * s->b8_stride;
int A[2] = {0}, B[2], C[2];
int i, j;
int i, j, k;
int mx, my;
int avail_index = avail_indexes[0];
@ -597,12 +597,12 @@ static void rv34_pred_mv_rv3(RV34DecContext *r, int block_type, int dir)
my += r->dmv[0][1];
for(j = 0; j < 2; j++){
for(i = 0; i < 2; i++){
s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][0] = mx;
s->current_picture_ptr->motion_val[0][mv_pos + i + j*s->b8_stride][1] = my;
for(k = 0; k < 2; k++){
s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][0] = mx;
s->current_picture_ptr->motion_val[k][mv_pos + i + j*s->b8_stride][1] = my;
}
}
}
if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD)
fill_rectangle(s->current_picture_ptr->motion_val[!dir][mv_pos], 2, 2, s->b8_stride, 0, 4);
}
static const int chroma_coeffs[3] = { 0, 3, 5 };