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swscale: yuv2422_1_c_template: fix rounding

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-02-14 18:33:14 +01:00
parent f89f9bdadd
commit 2bc610ddc5
1 changed files with 8 additions and 8 deletions
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16
libswscale/output.c
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@ -514,20 +514,20 @@ yuv2422_1_c_template(SwsContext *c, const int16_t *buf0,
if (uvalpha < 2048) {
for (i = 0; i < (dstW >> 1); i++) {
int Y1 = buf0[i * 2] >> 7;
int Y2 = buf0[i * 2 + 1] >> 7;
int U = ubuf0[i] >> 7;
int V = vbuf0[i] >> 7;
int Y1 = (buf0[i * 2 ]+64) >> 7;
int Y2 = (buf0[i * 2 + 1]+64) >> 7;
int U = (ubuf0[i] +64) >> 7;
int V = (vbuf0[i] +64) >> 7;
output_pixels(i * 4, Y1, U, Y2, V);
}
} else {
const int16_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
for (i = 0; i < (dstW >> 1); i++) {
int Y1 = buf0[i * 2] >> 7;
int Y2 = buf0[i * 2 + 1] >> 7;
int U = (ubuf0[i] + ubuf1[i]) >> 8;
int V = (vbuf0[i] + vbuf1[i]) >> 8;
int Y1 = (buf0[i * 2 ] + 64) >> 7;
int Y2 = (buf0[i * 2 + 1] + 64) >> 7;
int U = (ubuf0[i] + ubuf1[i]+128) >> 8;
int V = (vbuf0[i] + vbuf1[i]+128) >> 8;
output_pixels(i * 4, Y1, U, Y2, V);
}