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swscale/x86/rgb2rgb_template: Fallback to mmx in interleaveBytes() if the alignment is insufficient for SSE* 

This also as a sideeffect fixes the non aligned case

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-12-15 02:50:20 +01:00
parent 80bfce35cc
commit a066ff89bc
1 changed files with 6 additions and 8 deletions
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14
libswscale/x86/rgb2rgb_template.c
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@ -1887,10 +1887,9 @@ static void RENAME(interleaveBytes)(const uint8_t *src1, const uint8_t *src2, ui
for (h=0; h < height; h++) {
int w;
if (width >= 16
if (width >= 16) {
#if COMPILE_TEMPLATE_SSE2
&& !((((intptr_t)src1) | ((intptr_t)src2) | ((intptr_t)dest))&15)
)
if (!((((intptr_t)src1) | ((intptr_t)src2) | ((intptr_t)dest))&15)) {
__asm__(
"xor %%"REG_a", %%"REG_a" \n\t"
"1: \n\t"
@ -1909,8 +1908,8 @@ static void RENAME(interleaveBytes)(const uint8_t *src1, const uint8_t *src2, ui
::"r"(dest), "r"(src1), "r"(src2), "r" ((x86_reg)width-15)
: "memory", XMM_CLOBBERS("xmm0", "xmm1", "xmm2",) "%"REG_a
);
#else
)
} else
#endif
__asm__(
"xor %%"REG_a", %%"REG_a" \n\t"
"1: \n\t"
@ -1936,7 +1935,8 @@ static void RENAME(interleaveBytes)(const uint8_t *src1, const uint8_t *src2, ui
::"r"(dest), "r"(src1), "r"(src2), "r" ((x86_reg)width-15)
: "memory", "%"REG_a
);
#endif
}
for (w= (width&(~15)); w < width; w++) {
dest[2*w+0] = src1[w];
dest[2*w+1] = src2[w];
@ -1946,9 +1946,7 @@ static void RENAME(interleaveBytes)(const uint8_t *src1, const uint8_t *src2, ui
src2 += src2Stride;
}
__asm__(
#if !COMPILE_TEMPLATE_SSE2
EMMS" \n\t"
#endif
SFENCE" \n\t"
::: "memory"
);