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swscale/output: Fix several invalid shifts in yuv2rgb_full_1_c_template()

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Fixes: Invalid shifts
Fixes: #8320

Reviewed-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 7b7f97532b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2020-01-21 22:52:19 +01:00
parent 04ee309be0
commit ffe2c013dc
1 changed files with 4 additions and 4 deletions
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8
libswscale/output.c
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@@ -1905,7 +1905,7 @@ yuv2rgb_full_1_c_template(SwsContext *c, const int16_t *buf0,
if (uvalpha < 2048) {
int A = 0; //init to silence warning
for (i = 0; i < dstW; i++) {
int Y = buf0[i] << 2;
int Y = buf0[i] * 4;
int U = (ubuf0[i] - (128<<7)) * 4;
int V = (vbuf0[i] - (128<<7)) * 4;
@@ -1922,9 +1922,9 @@ yuv2rgb_full_1_c_template(SwsContext *c, const int16_t *buf0,
const int16_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
int A = 0; //init to silence warning
for (i = 0; i < dstW; i++) {
int Y = buf0[i] << 2;
int U = (ubuf0[i] + ubuf1[i] - (128<<8)) << 1;
int V = (vbuf0[i] + vbuf1[i] - (128<<8)) << 1;
int Y = buf0[i] * 4;
int U = (ubuf0[i] + ubuf1[i] - (128<<8)) * 2;
int V = (vbuf0[i] + vbuf1[i] - (128<<8)) * 2;
if (hasAlpha) {
A = (abuf0[i] + 64) >> 7;