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swscale/output: Fix alpha shift in yuv2gbrp_full_X_c() 

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-11-09 23:53:43 +01:00
parent a340cfef82
commit 873d06c76e
1 changed files with 4 additions and 6 deletions
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10
libswscale/output.c
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@ -1979,10 +1979,8 @@ yuv2gbrp_full_X_c(SwsContext *c, const int16_t *lumFilter,
for (j = 0; j < lumFilterSize; j++)
A += alpSrc[j][i] * lumFilter[j];
A >>= 19;
if (A & 0x100)
A = av_clip_uint8(A);
if (A & 0xF8000000)
A = av_clip_uintp2(A, 27);
}
Y -= c->yuv2rgb_y_offset;
@ -2003,13 +2001,13 @@ yuv2gbrp_full_X_c(SwsContext *c, const int16_t *lumFilter,
dest16[1][i] = B >> SH;
dest16[2][i] = R >> SH;
if (hasAlpha)
dest16[3][i] = A;
dest16[3][i] = A >> (SH - 3);
} else {
dest[0][i] = G >> 22;
dest[1][i] = B >> 22;
dest[2][i] = R >> 22;
if (hasAlpha)
dest[3][i] = A;
dest[3][i] = A >> 19;
}
}
if (SH != 22 && (!isBE(c->dstFormat)) != (!HAVE_BIGENDIAN)) {