Add MSA optimized NV12/21 To RGB row functions

source/convert_argb.cc

Index: source/convert_argb.cc
diff --git a/source/convert_argb.cc b/source/convert_argb.cc
index ccb3766c57d8ef11671fc24b6efb8df4be4240ed..f7d0765e036324c3a5498581d1ca16195a8f2881 100644
--- a/source/convert_argb.cc
+++ b/source/convert_argb.cc
@@ -1326,6 +1326,14 @@ int NV12ToARGB(const uint8* src_y,
     }
   }
 #endif
+#if defined(HAS_NV12TOARGBROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    NV12ToARGBRow = NV12ToARGBRow_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      NV12ToARGBRow = NV12ToARGBRow_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height; ++y) {
     NV12ToARGBRow(src_y, src_uv, dst_argb, &kYuvI601Constants, width);
@@ -1385,6 +1393,14 @@ int NV21ToARGB(const uint8* src_y,
     }
   }
 #endif
+#if defined(HAS_NV21TOARGBROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    NV21ToARGBRow = NV21ToARGBRow_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      NV21ToARGBRow = NV21ToARGBRow_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height; ++y) {
     NV21ToARGBRow(src_y, src_uv, dst_argb, &kYuvI601Constants, width);
@@ -1450,6 +1466,14 @@ int M420ToARGB(const uint8* src_m420,
     }
   }
 #endif
+#if defined(HAS_NV12TOARGBROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    NV12ToARGBRow = NV12ToARGBRow_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      NV12ToARGBRow = NV12ToARGBRow_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height - 1; y += 2) {
     NV12ToARGBRow(src_m420, src_m420 + src_stride_m420 * 2, dst_argb,