Unaligned version of ABGRToARGB for SSSE3

BUG=196
TESTED=libyuv_unittest --gtest_filter=*ABGRToARGB*
Review URL: https://webrtc-codereview.appspot.com/1166006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@595 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 594
+Version: 595
 License: BSD
 License File: LICENSE
 

include/libyuv/row.h

@@ -635,6 +635,8 @@ void ARGBSetRows_C(uint8* dst, uint32 v32, int width, int dst_stride,
 
 void BGRAToARGBRow_SSSE3(const uint8* src_bgra, uint8* dst_argb, int pix);
 void ABGRToARGBRow_SSSE3(const uint8* src_abgr, uint8* dst_argb, int pix);
+void ABGRToARGBRow_Unaligned_SSSE3(const uint8* src_abgr, uint8* dst_argb,
+                                   int pix);
 void RGBAToARGBRow_SSSE3(const uint8* src_rgba, uint8* dst_argb, int pix);
 void RGB24ToARGBRow_SSSE3(const uint8* src_rgb24, uint8* dst_argb, int pix);
 void RAWToARGBRow_SSSE3(const uint8* src_raw, uint8* dst_argb, int pix);

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 594
+#define LIBYUV_VERSION 595
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

source/convert_argb.cc

@@ -350,9 +350,13 @@ int ABGRToARGB(const uint8* src_abgr, int src_stride_abgr,
   void (*ABGRToARGBRow)(const uint8* src_abgr, uint8* dst_argb, int pix) =
       ABGRToARGBRow_C;
 #if defined(HAS_ABGRTOARGBROW_SSSE3)
-  if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 4) &&
-      IS_ALIGNED(src_abgr, 16) && IS_ALIGNED(src_stride_abgr, 16) &&
-      IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16)) {
+  if (TestCpuFlag(kCpuHasSSSE3) && IS_ALIGNED(width, 4)) {
+    // TODO(fbarchard): Port to posix.
+#if defined(_M_IX86)
+      ABGRToARGBRow = ABGRToARGBRow_Unaligned_SSSE3;
+#endif
+      if (IS_ALIGNED(src_abgr, 16) && IS_ALIGNED(src_stride_abgr, 16) &&
+          IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16))
         ABGRToARGBRow = ABGRToARGBRow_SSSE3;
   }
 #elif defined(HAS_ABGRTOARGBROW_NEON)

source/row_win.cc

@@ -251,6 +251,28 @@ void BGRAToARGBRow_SSSE3(const uint8* src_bgra, uint8* dst_argb, int pix) {
   }
 }
 
+__declspec(naked) __declspec(align(16))
+void ABGRToARGBRow_Unaligned_SSSE3(const uint8* src_abgr, uint8* dst_argb,
+                                   int pix) {
+__asm {
+    mov       eax, [esp + 4]   // src_abgr
+    mov       edx, [esp + 8]   // dst_argb
+    mov       ecx, [esp + 12]  // pix
+    movdqa    xmm5, kShuffleMaskABGRToARGB
+    sub       edx, eax
+
+    align      16
+ convertloop:
+    movdqu    xmm0, [eax]
+    pshufb    xmm0, xmm5
+    sub       ecx, 4
+    movdqu    [eax + edx], xmm0
+    lea       eax, [eax + 16]
+    jg        convertloop
+    ret
+  }
+}
+
 __declspec(naked) __declspec(align(16))
 void ABGRToARGBRow_SSSE3(const uint8* src_abgr, uint8* dst_argb, int pix) {
   __asm {