Add MSA optimized I422ToRGB565Row_MSA, I422ToARGB4444Row_MSA and I422ToARGB1555Row_MSA functions

source/convert_from.cc

Index: source/convert_from.cc
diff --git a/source/convert_from.cc b/source/convert_from.cc
index 9859f5f3b68c35621e1a741822d0ca6e1a493f64..518f0a5423d7bcd746610faf0c7977d58a783fd1 100644
--- a/source/convert_from.cc
+++ b/source/convert_from.cc
@@ -657,6 +657,14 @@ int I420ToARGB1555(const uint8* src_y, int src_stride_y,
     }
   }
 #endif
+#if defined(HAS_I422TOARGB1555ROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    I422ToARGB1555Row = I422ToARGB1555Row_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      I422ToARGB1555Row = I422ToARGB1555Row_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height; ++y) {
     I422ToARGB1555Row(src_y, src_u, src_v, dst_argb1555, &kYuvI601Constants,
@@ -720,6 +728,14 @@ int I420ToARGB4444(const uint8* src_y, int src_stride_y,
     }
   }
 #endif
+#if defined(HAS_I422TOARGB4444ROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    I422ToARGB4444Row = I422ToARGB4444Row_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      I422ToARGB4444Row = I422ToARGB4444Row_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height; ++y) {
     I422ToARGB4444Row(src_y, src_u, src_v, dst_argb4444, &kYuvI601Constants,
@@ -782,6 +798,14 @@ int I420ToRGB565(const uint8* src_y, int src_stride_y,
     }
   }
 #endif
+#if defined(HAS_I422TORGB565ROW_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    I422ToRGB565Row = I422ToRGB565Row_Any_MSA;
+    if (IS_ALIGNED(width, 8)) {
+      I422ToRGB565Row = I422ToRGB565Row_MSA;
+    }
+  }
+#endif
 
   for (y = 0; y < height; ++y) {
     I422ToRGB565Row(src_y, src_u, src_v, dst_rgb565, &kYuvI601Constants, width);