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avcodec/motion_est: use 2x8x8 for interlaced qpel 

Fixes out of array read
Fixes Ticket4121

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit b50e003e1c)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-12-01 13:23:24 +01:00
parent db61d34e83
commit 93df243a59
1 changed files with 7 additions and 1 deletions
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8
libavcodec/motion_est.c
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@ -193,7 +193,13 @@ static av_always_inline int cmp_inline(MpegEncContext *s, const int x, const int
int uvdxy; /* no, it might not be used uninitialized */
if(dxy){
if(qpel){
c->qpel_put[size][dxy](c->temp, ref[0] + x + y*stride, stride); //FIXME prototype (add h)
if (h << size == 16) {
c->qpel_put[size][dxy](c->temp, ref[0] + x + y*stride, stride); //FIXME prototype (add h)
} else if (size == 0 && h == 8) {
c->qpel_put[1][dxy](c->temp , ref[0] + x + y*stride , stride);
c->qpel_put[1][dxy](c->temp + 8, ref[0] + x + y*stride + 8, stride);
} else
av_assert2(0);
if(chroma){
int cx= hx/2;
int cy= hy/2;