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Code Issues Releases Activity

avcodec/jpeg2000dsp: Use unsigned to avoid overflow

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Affected the jpeg2000dsp checkasm test.

Reviewed-by: Tomas Härdin <git@haerdin.se>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-09-27 01:20:27 +02:00
parent 2fd99aa208
commit 3b09e8f5e9
1 changed files with 4 additions and 5 deletions
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9
libavcodec/jpeg2000dsp.c
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@ -76,14 +76,13 @@ static void ict_int(void *_src0, void *_src1, void *_src2, int csize)
static void rct_int(void *_src0, void *_src1, void *_src2, int csize)
{
int32_t *src0 = _src0, *src1 = _src1, *src2 = _src2;
int32_t i0, i1, i2;
uint32_t *src0 = _src0, *src1 = _src1, *src2 = _src2;
int i;
for (i = 0; i < csize; i++) {
i1 = *src0 - (*src2 + *src1 >> 2);
i0 = i1 + *src2;
i2 = i1 + *src1;
uint32_t i1 = *src0 - ((int32_t)(*src2 + *src1) >> 2);
int32_t i0 = i1 + *src2;
int32_t i2 = i1 + *src1;
*src0++ = i0;
*src1++ = i1;
*src2++ = i2;