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sws/packed_16bpc_bswap: fix handling of negative stride

This commit is contained in:
Michael Niedermayer 2013-05-12 17:26:15 +02:00
parent 63725d158d
commit 91f4a44ff4
1 changed files with 3 additions and 3 deletions
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6
libswscale/swscale_unscaled.c
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@ -324,11 +324,11 @@ static int packed_16bpc_bswap(SwsContext *c, const uint8_t *src[],
int i, j, p; int i, j, p;
for (p = 0; p < 4; p++) { for (p = 0; p < 4; p++) {
int srcstr = srcStride[p] >> 1; int srcstr = srcStride[p] / 2;
int dststr = dstStride[p] >> 1; int dststr = dstStride[p] / 2;
uint16_t *dstPtr = (uint16_t *) dst[p]; uint16_t *dstPtr = (uint16_t *) dst[p];
const uint16_t *srcPtr = (const uint16_t *) src[p]; const uint16_t *srcPtr = (const uint16_t *) src[p];
int min_stride = FFMIN(srcstr, dststr); int min_stride = FFMIN(FFABS(srcstr), FFABS(dststr));
if(!dstPtr || !srcPtr) if(!dstPtr || !srcPtr)
continue; continue;
for (i = 0; i < (srcSliceH >> c->chrDstVSubSample); i++) { for (i = 0; i < (srcSliceH >> c->chrDstVSubSample); i++) {