ARGBInterpolateRow_SSSE3 for motion blur. Used to use bilinear row filter, which extrudes edges. This branches off the code so the extrude can be removed for Interpolate.
BUG=none
TEST=build\release\libyuv_unittest.exe --gtest_catch_exceptions=0 --gtest_filter=*
Review URL: https://webrtc-codereview.appspot.com/786007
git-svn-id: http://libyuv.googlecode.com/svn/trunk@354 16f28f9a-4ce2-e073-06de-1de4eb20be90
diff --git a/source/row_posix.cc b/source/row_posix.cc
index 0a9240d..2da4dfa 100644
--- a/source/row_posix.cc
+++ b/source/row_posix.cc
@@ -3560,6 +3560,71 @@
}
#endif // HAS_ARGBAFFINEROW_SSE2
+// Bilinear row filtering combines 4x2 -> 4x1. SSSE3 version
+void ARGBInterpolateRow_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
+ ptrdiff_t src_stride, int dst_width,
+ int source_y_fraction) {
+ asm volatile (
+ "sub %1,%0 \n"
+ "shr %3 \n"
+ "cmp $0x0,%3 \n"
+ "je 2f \n"
+ "cmp $0x40,%3 \n"
+ "je 3f \n"
+ "movd %3,%%xmm0 \n"
+ "neg %3 \n"
+ "add $0x80,%3 \n"
+ "movd %3,%%xmm5 \n"
+ "punpcklbw %%xmm0,%%xmm5 \n"
+ "punpcklwd %%xmm5,%%xmm5 \n"
+ "pshufd $0x0,%%xmm5,%%xmm5 \n"
+ ".p2align 4 \n"
+ "1: \n"
+ "movdqa (%1),%%xmm0 \n"
+ "movdqa (%1,%4,1),%%xmm2 \n"
+ "movdqa %%xmm0,%%xmm1 \n"
+ "punpcklbw %%xmm2,%%xmm0 \n"
+ "punpckhbw %%xmm2,%%xmm1 \n"
+ "pmaddubsw %%xmm5,%%xmm0 \n"
+ "pmaddubsw %%xmm5,%%xmm1 \n"
+ "psrlw $0x7,%%xmm0 \n"
+ "psrlw $0x7,%%xmm1 \n"
+ "packuswb %%xmm1,%%xmm0 \n"
+ "sub $0x4,%2 \n"
+ "movdqa %%xmm0,(%1,%0,1) \n"
+ "lea 0x10(%1),%1 \n"
+ "jg 1b \n"
+ "jmp 4f \n"
+ ".p2align 4 \n"
+ "2: \n"
+ "movdqa (%1),%%xmm0 \n"
+ "sub $0x4,%2 \n"
+ "movdqa %%xmm0,(%1,%0,1) \n"
+ "lea 0x10(%1),%1 \n"
+ "jg 2b \n"
+ "jmp 4f \n"
+ ".p2align 4 \n"
+ "3: \n"
+ "movdqa (%1),%%xmm0 \n"
+ "pavgb (%1,%4,1),%%xmm0 \n"
+ "sub $0x4,%2 \n"
+ "movdqa %%xmm0,(%1,%0,1) \n"
+ "lea 0x10(%1),%1 \n"
+ "jg 3b \n"
+ "4: \n"
+ ".p2align 4 \n"
+ : "+r"(dst_ptr), // %0
+ "+r"(src_ptr), // %1
+ "+r"(dst_width), // %2
+ "+r"(source_y_fraction) // %3
+ : "r"(static_cast<intptr_t>(src_stride)) // %4
+ : "memory", "cc"
+#if defined(__SSE2__)
+ , "xmm0", "xmm1", "xmm2", "xmm5"
+#endif
+ );
+}
+
#endif // defined(__x86_64__) || defined(__i386__)
#ifdef __cplusplus