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Port BlendPlaneRow_SSSE3 to GCC

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R=dhrosa@google.com, harryjin@google.com
BUG=libyuv:527

Review URL: https://codereview.chromium.org/1490273006 .
This commit is contained in:
Frank Barchard 2015-12-04 11:19:41 -08:00
parent 8af0ebf816
commit fa2618ee26
2 changed files with 49 additions and 0 deletions
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1
include/libyuv/row.h
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@ -182,6 +182,7 @@ extern "C" {
#define HAS_SOBELXROW_SSE2
#define HAS_SOBELXYROW_SSE2
#define HAS_SOBELYROW_SSE2
#define HAS_BLENDPLANEROW_SSSE3
#endif
// The following are available on all x86 platforms, but

48
source/row_gcc.cc
View File

@ -3467,6 +3467,54 @@ void ARGBBlendRow_SSSE3(const uint8* src_argb0, const uint8* src_argb1,
}
#endif // HAS_ARGBBLENDROW_SSSE3
#ifdef HAS_BLENDPLANEROW_SSSE3
// Blend 8 pixels at a time.
// =((G2*C2)+(H2*(D2))+32768+127)/256
void BlendPlaneRow_SSSE3(const uint8* src0, const uint8* src1,
const uint8* alpha, uint8* dst, int width) {
asm volatile (
"pcmpeqb %%xmm5,%%xmm5 \n"
"psllw $0x8,%%xmm5 \n"
"mov $0x80808080,%%eax \n"
"movd %%eax,%%xmm6 \n"
"pshufd $0x0,%%xmm6,%%xmm6 \n"
"mov $0x807f807f,%%eax \n"
"movd %%eax,%%xmm7 \n"
"pshufd $0x0,%%xmm7,%%xmm7 \n"
"sub %2,%0 \n"
"sub %2,%1 \n"
"sub %2,%3 \n"
// 8 pixel loop.
LABELALIGN
"1: \n"
"movq (%2),%%xmm0 \n"
"punpcklbw %%xmm0,%%xmm0 \n"
"pxor %%xmm5,%%xmm0 \n"
"movq (%0,%2,1),%%xmm1 \n"
"movq (%1,%2,1),%%xmm2 \n"
"punpcklbw %%xmm2,%%xmm1 \n"
"psubb %%xmm6,%%xmm1 \n"
"pmaddubsw %%xmm1,%%xmm0 \n"
"paddw %%xmm7,%%xmm0 \n"
"psrlw $0x8,%%xmm0 \n"
"packuswb %%xmm0,%%xmm0 \n"
"movq %%xmm0,(%3,%2,1) \n"
"lea 0x8(%2),%2 \n"
"sub $0x8,%4 \n"
"jg 1b \n"
: "+r"(src0), // %0
"+r"(src1), // %1
"+r"(alpha), // %2
"+r"(dst), // %3
"+r"(width) // %4
:: "memory", "cc", "eax", "xmm0", "xmm1", "xmm2", "xmm5", "xmm6", "xmm7"
);
}
#endif // HAS_BLENDPLANEROW_SSSE3
#ifdef HAS_ARGBATTENUATEROW_SSSE3
// Shuffle table duplicating alpha
static uvec8 kShuffleAlpha0 = {