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https://chromium.googlesource.com/libyuv/libyuv
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SSSE3 version of alpha blender does pshufb instead of shift and 2 pshufw.
BUG=none TEST=none Review URL: https://webrtc-codereview.appspot.com/446008 git-svn-id: http://libyuv.googlecode.com/svn/trunk@219 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com
parent
67be98bd44
commit
8670b1ae04
@ -1,6 +1,6 @@
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Name: libyuv
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URL: http://code.google.com/p/libyuv/
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Version: 218
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Version: 219
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License: BSD
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License File: LICENSE
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@ -11,7 +11,7 @@
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#ifndef INCLUDE_LIBYUV_VERSION_H_
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#define INCLUDE_LIBYUV_VERSION_H_
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#define LIBYUV_VERSION 218
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#define LIBYUV_VERSION 219
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#endif // INCLUDE_LIBYUV_VERSION_H_
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@ -176,6 +176,15 @@ int ARGBBlend(const uint8* src_argb, int src_stride_argb,
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}
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}
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#endif
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#if defined(HAS_ARGBBLENDROW_SSSE3)
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if (TestCpuFlag(kCpuHasSSSE3)) {
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ARGBBlendRow = ARGBBlendRow_SSSE3;
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if (IS_ALIGNED(width, 4) &&
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IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
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ARGBBlendRow = ARGBBlendRow_Aligned_SSSE3;
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}
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}
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#endif
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for (int y = 0; y < height; ++y) {
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ARGBBlendRow(src_argb, dst_argb, width);
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@ -76,6 +76,10 @@ extern "C" {
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#define HAS_I420TOABGRROW_NEON
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#endif
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#if defined(_MSC_VER) && !defined(YUV_DISABLE_ASM)
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#define HAS_ARGBBLENDROW_SSSE3
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#endif
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#if defined(_MSC_VER)
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#define SIMD_ALIGNED(var) __declspec(align(16)) var
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typedef __declspec(align(16)) signed char vec8[16];
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@ -241,8 +245,11 @@ void YToARGBRow_SSE2(const uint8* y_buf,
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int width);
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// ARGB preattenuated alpha blend.
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void ARGBBlendRow_Aligned_SSSE3(const uint8* src_argb, uint8* dst_argb,
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int width);
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void ARGBBlendRow_Aligned_SSE2(const uint8* src_argb, uint8* dst_argb,
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int width);
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void ARGBBlendRow_SSSE3(const uint8* src_argb, uint8* dst_argb, int width);
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void ARGBBlendRow_SSE2(const uint8* src_argb, uint8* dst_argb, int width);
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void ARGBBlendRow_C(const uint8* src_argb, uint8* dst_argb, int width);
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@ -1961,7 +1961,6 @@ void UYVYToUVRow_Unaligned_SSE2(const uint8* src_uyvy, int stride_uyvy,
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#ifdef HAS_ARGBBLENDROW_SSE2
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// Blend 8 pixels at a time
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// Destination aligned to 16 bytes, multiple of 4 pixels
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// TODO(fbarchard): SSSE3 version with pshufb for alpha and maybe pmaddubsw
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__declspec(naked) __declspec(align(16))
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void ARGBBlendRow_Aligned_SSE2(const uint8* src_argb, uint8* dst_argb,
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int width) {
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@ -1988,7 +1987,7 @@ void ARGBBlendRow_Aligned_SSE2(const uint8* src_argb, uint8* dst_argb,
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pshufhw xmm3, xmm3,0F5h // 8 alpha words
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pshuflw xmm3, xmm3,0F5h
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pand xmm2, xmm6 // _r_b
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paddw xmm3, xmm7 // 256-alpha
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paddw xmm3, xmm7 // 256 - alpha
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pmullw xmm2, xmm3 // _r_b * alpha
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movdqa xmm1, [edx] // _a_g
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psrlw xmm1, 8 // _a_g
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@ -2006,12 +2005,12 @@ void ARGBBlendRow_Aligned_SSE2(const uint8* src_argb, uint8* dst_argb,
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movdqa xmm0, xmm3 // src argb
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pxor xmm3, xmm4 // ~alpha
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movdqa xmm2, [edx + 16] // _r_b
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movdqa xmm2, [edx + 16] // _r_b
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psrlw xmm3, 8 // alpha
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pshufhw xmm3, xmm3,0F5h // 8 alpha words
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pshuflw xmm3, xmm3,0F5h
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pand xmm2, xmm6 // _r_b
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paddw xmm3, xmm7 // 256-alpha
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paddw xmm3, xmm7 // 256 - alpha
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pmullw xmm2, xmm3 // _r_b * alpha
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movdqa xmm1, [edx + 16] // _a_g
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psrlw xmm1, 8 // _a_g
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@ -2058,7 +2057,7 @@ void ARGBBlendRow1_SSE2(const uint8* src_argb, uint8* dst_argb, int width) {
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pshufhw xmm3, xmm3,0F5h // 8 alpha words
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pshuflw xmm3, xmm3,0F5h
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pand xmm2, xmm6 // _r_b
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paddw xmm3, xmm7 // 256-alpha
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paddw xmm3, xmm7 // 256 - alpha
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pmullw xmm2, xmm3 // _r_b * alpha
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movd xmm1, [edx] // _a_g
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psrlw xmm1, 8 // _a_g
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@ -2100,9 +2099,115 @@ void ARGBBlendRow_SSE2(const uint8* src_argb, uint8* dst_argb, int width) {
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ARGBBlendRow1_SSE2(src_argb, dst_argb, width);
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}
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}
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#endif // HAS_ARGBBLENDROW_SSE2
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#ifdef HAS_ARGBBLENDROW_SSSE3
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// Blend 8 pixels at a time
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// Shuffle table for reversing the bytes.
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static const uvec8 kShuffleAlpha = {
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3u, 0x80, 3u, 0x80, 7u, 0x80, 7u, 0x80,
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11u, 0x80, 11u, 0x80, 15u, 0x80, 15u, 0x80
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};
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// Same as SSE2, but replaces
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// psrlw xmm3, 8 // alpha
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// pshufhw xmm3, xmm3,0F5h // 8 alpha words
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// pshuflw xmm3, xmm3,0F5h
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// with..
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// pshufb xmm3, kShuffleAlpha // alpha
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// Destination aligned to 16 bytes, multiple of 4 pixels
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__declspec(naked) __declspec(align(16))
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void ARGBBlendRow_Aligned_SSSE3(const uint8* src_argb, uint8* dst_argb,
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int width) {
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__asm {
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mov eax, [esp + 4] // src_argb
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mov edx, [esp + 8] // dst_argb
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mov ecx, [esp + 12] // width
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pcmpeqb xmm7, xmm7 // generate constant 1
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psrlw xmm7, 15
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pcmpeqb xmm6, xmm6 // generate mask 0x00ff00ff
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psrlw xmm6, 8
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pcmpeqb xmm5, xmm5 // generate mask 0xff00ff00
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psllw xmm5, 8
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pcmpeqb xmm4, xmm4 // generate mask 0xff000000
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pslld xmm4, 24
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align 16
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convertloop:
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movdqu xmm3, [eax]
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movdqa xmm0, xmm3 // src argb
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pxor xmm3, xmm4 // ~alpha
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pshufb xmm3, kShuffleAlpha // alpha
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movdqa xmm2, [edx] // _r_b
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pand xmm2, xmm6 // _r_b
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paddw xmm3, xmm7 // 256 - alpha
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pmullw xmm2, xmm3 // _r_b * alpha
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movdqa xmm1, [edx] // _a_g
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psrlw xmm1, 8 // _a_g
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por xmm0, xmm4 // set alpha to 255
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pmullw xmm1, xmm3 // _a_g * alpha
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movdqu xmm3, [eax + 16]
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lea eax, [eax + 32]
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psrlw xmm2, 8 // _r_b convert to 8 bits again
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paddusb xmm0, xmm2 // + src argb
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pand xmm1, xmm5 // a_g_ convert to 8 bits again
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paddusb xmm0, xmm1 // + src argb
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sub ecx, 4
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movdqa [edx], xmm0
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jle done
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movdqa xmm0, xmm3 // src argb
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pxor xmm3, xmm4 // ~alpha
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movdqa xmm2, [edx + 16] // _r_b
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pshufb xmm3, kShuffleAlpha // alpha
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pand xmm2, xmm6 // _r_b
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paddw xmm3, xmm7 // 256 - alpha
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pmullw xmm2, xmm3 // _r_b * alpha
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movdqa xmm1, [edx + 16] // _a_g
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psrlw xmm1, 8 // _a_g
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por xmm0, xmm4 // set alpha to 255
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pmullw xmm1, xmm3 // _a_g * alpha
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psrlw xmm2, 8 // _r_b convert to 8 bits again
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paddusb xmm0, xmm2 // + src argb
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pand xmm1, xmm5 // a_g_ convert to 8 bits again
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paddusb xmm0, xmm1 // + src argb
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sub ecx, 4
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movdqa [edx + 16], xmm0
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lea edx, [edx + 32]
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jg convertloop
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done:
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ret
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}
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}
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void ARGBBlendRow_SSSE3(const uint8* src_argb, uint8* dst_argb, int width) {
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// Do 1 to 3 pixels to get destination aligned.
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if ((uintptr_t)(dst_argb) & 15) {
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int count = width;
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if (((intptr_t)(dst_argb) & 3) == 0) {
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count = (-(intptr_t)(dst_argb) >> 2) & 3;
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}
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ARGBBlendRow1_SSE2(src_argb, dst_argb, count);
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src_argb += count * 4;
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dst_argb += count * 4;
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width -= count;
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}
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// Do multiple of 4 pixels
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if (width & ~3) {
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ARGBBlendRow_Aligned_SSSE3(src_argb, dst_argb, width & ~3);
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}
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// Do remaining 1 to 3 pixels
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if (width & 3) {
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src_argb += (width & ~3) * 4;
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dst_argb += (width & ~3) * 4;
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width &= 3;
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ARGBBlendRow1_SSE2(src_argb, dst_argb, width);
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}
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}
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#endif // HAS_ARGBBLENDROW_SSSE3
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#endif // _M_IX86
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#ifdef __cplusplus
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