Copy Alpha odd width support

R=harryjin@google.com
BUG=none

Review URL: https://webrtc-codereview.appspot.com/59369004.

include/libyuv/row.h

@@ -816,10 +816,18 @@ void CopyRow_16_C(const uint16* src, uint16* dst, int count);
 void ARGBCopyAlphaRow_C(const uint8* src_argb, uint8* dst_argb, int width);
 void ARGBCopyAlphaRow_SSE2(const uint8* src_argb, uint8* dst_argb, int width);
 void ARGBCopyAlphaRow_AVX2(const uint8* src_argb, uint8* dst_argb, int width);
+void ARGBCopyAlphaRow_Any_SSE2(const uint8* src_argb, uint8* dst_argb,
+                               int width);
+void ARGBCopyAlphaRow_Any_AVX2(const uint8* src_argb, uint8* dst_argb,
+                               int width);
 
 void ARGBCopyYToAlphaRow_C(const uint8* src_y, uint8* dst_argb, int width);
 void ARGBCopyYToAlphaRow_SSE2(const uint8* src_y, uint8* dst_argb, int width);
 void ARGBCopyYToAlphaRow_AVX2(const uint8* src_y, uint8* dst_argb, int width);
+void ARGBCopyYToAlphaRow_Any_SSE2(const uint8* src_y, uint8* dst_argb,
+                                  int width);
+void ARGBCopyYToAlphaRow_Any_AVX2(const uint8* src_y, uint8* dst_argb,
+                                  int width);
 
 void SetRow_C(uint8* dst, uint8 v8, int count);
 void SetRow_X86(uint8* dst, uint8 v8, int count);

source/convert_argb.cc

@@ -319,14 +319,20 @@ int I420AlphaToARGB(const uint8* src_y, int src_stride_y,
   }
 #endif
 #if defined(HAS_ARGBCOPYYTOALPHAROW_SSE2)
-  if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(width, 8)) {
+  if (TestCpuFlag(kCpuHasSSE2)) {
+    ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_Any_SSE2;
+    if (IS_ALIGNED(width, 8)) {
       ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_SSE2;
     }
+  }
 #endif
 #if defined(HAS_ARGBCOPYYTOALPHAROW_AVX2)
-  if (TestCpuFlag(kCpuHasAVX2) && IS_ALIGNED(width, 16)) {
+  if (TestCpuFlag(kCpuHasAVX2)) {
+    ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_Any_AVX2;
+    if (IS_ALIGNED(width, 16)) {
       ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_AVX2;
     }
+  }
 #endif
 #if defined(HAS_ARGBATTENUATEROW_SSE2)
   if (TestCpuFlag(kCpuHasSSE2)) {

source/planar_functions.cc

@@ -2280,14 +2280,20 @@ int ARGBCopyAlpha(const uint8* src_argb, int src_stride_argb,
     src_stride_argb = dst_stride_argb = 0;
   }
 #if defined(HAS_ARGBCOPYALPHAROW_SSE2)
-  if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(width, 8)) {
+  if (TestCpuFlag(kCpuHasSSE2)) {
+    ARGBCopyAlphaRow = ARGBCopyAlphaRow_Any_SSE2;
+    if (IS_ALIGNED(width, 8)) {
       ARGBCopyAlphaRow = ARGBCopyAlphaRow_SSE2;
     }
+  }
 #endif
 #if defined(HAS_ARGBCOPYALPHAROW_AVX2)
-  if (TestCpuFlag(kCpuHasAVX2) && IS_ALIGNED(width, 16)) {
+  if (TestCpuFlag(kCpuHasAVX2)) {
+    ARGBCopyAlphaRow = ARGBCopyAlphaRow_Any_AVX2;
+    if (IS_ALIGNED(width, 16)) {
       ARGBCopyAlphaRow = ARGBCopyAlphaRow_AVX2;
     }
+  }
 #endif
 
   for (y = 0; y < height; ++y) {
@@ -2323,14 +2329,20 @@ int ARGBCopyYToAlpha(const uint8* src_y, int src_stride_y,
     src_stride_y = dst_stride_argb = 0;
   }
 #if defined(HAS_ARGBCOPYYTOALPHAROW_SSE2)
-  if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(width, 8)) {
+  if (TestCpuFlag(kCpuHasSSE2)) {
+    ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_Any_SSE2;
+    if (IS_ALIGNED(width, 8)) {
       ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_SSE2;
     }
+  }
 #endif
 #if defined(HAS_ARGBCOPYYTOALPHAROW_AVX2)
-  if (TestCpuFlag(kCpuHasAVX2) && IS_ALIGNED(width, 16)) {
+  if (TestCpuFlag(kCpuHasAVX2)) {
+    ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_Any_AVX2;
+    if (IS_ALIGNED(width, 16)) {
       ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_AVX2;
     }
+  }
 #endif
 
   for (y = 0; y < height; ++y) {

source/row_any.cc

@@ -245,6 +245,18 @@ ANY11(CopyRow_Any_SSE2, CopyRow_SSE2, 0, 1, 1, 31)
 #ifdef HAS_COPYROW_NEON
 ANY11(CopyRow_Any_NEON, CopyRow_NEON, 0, 1, 1, 31)
 #endif
+#ifdef HAS_ARGBCOPYALPHAROW_AVX2
+ANY11(ARGBCopyAlphaRow_Any_AVX2, ARGBCopyAlphaRow_AVX2, 0, 1, 4, 15)
+#endif
+#ifdef HAS_ARGBCOPYYTOALPHAROW_SSE2
+ANY11(ARGBCopyAlphaRow_Any_SSE2, ARGBCopyAlphaRow_SSE2, 0, 1, 4, 7)
+#endif
+#ifdef HAS_ARGBCOPYYTOALPHAROW_AVX2
+ANY11(ARGBCopyYToAlphaRow_Any_AVX2, ARGBCopyYToAlphaRow_AVX2, 0, 1, 4, 15)
+#endif
+#ifdef HAS_ARGBCOPYYTOALPHAROW_SSE2
+ANY11(ARGBCopyYToAlphaRow_Any_SSE2, ARGBCopyYToAlphaRow_SSE2, 0, 1, 4, 7)
+#endif
 #if defined(HAS_ARGBTORGB24ROW_SSSE3)
 ANY11(ARGBToRGB24Row_Any_SSSE3, ARGBToRGB24Row_SSSE3, 0, 4, 3, 15)
 ANY11(ARGBToRAWRow_Any_SSSE3, ARGBToRAWRow_SSSE3, 0, 4, 3, 15)