Add MSA optimized ARGB scaling functions

source/scale_argb.cc

 /*
  *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 74 matching lines @@
                                           : ScaleARGBRowDown2Box_Any_NEON);
     if (IS_ALIGNED(dst_width, 8)) {
       ScaleARGBRowDown2 =
           filtering == kFilterNone
               ? ScaleARGBRowDown2_NEON
               : (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_NEON
                                             : ScaleARGBRowDown2Box_NEON);
     }
   }
 #endif
+#if defined(HAS_SCALEARGBROWDOWN2_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    ScaleARGBRowDown2 =
+        filtering == kFilterNone
+            ? ScaleARGBRowDown2_Any_MSA
+            : (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_Any_MSA
+                                          : ScaleARGBRowDown2Box_Any_MSA);
+    if (IS_ALIGNED(dst_width, 4)) {
+      ScaleARGBRowDown2 =
+          filtering == kFilterNone
+              ? ScaleARGBRowDown2_MSA
+              : (filtering == kFilterLinear ? ScaleARGBRowDown2Linear_MSA
+                                            : ScaleARGBRowDown2Box_MSA);
+    }
+  }
+#endif
 
   if (filtering == kFilterLinear) {
     src_stride = 0;
   }
   for (j = 0; j < dst_height; ++j) {
     ScaleARGBRowDown2(src_argb, src_stride, dst_argb, dst_width);
     src_argb += row_stride;
     dst_argb += dst_stride;
   }
 }
@@ skipping 91 matching lines @@
 #if defined(HAS_SCALEARGBROWDOWNEVEN_NEON)
   if (TestCpuFlag(kCpuHasNEON)) {
     ScaleARGBRowDownEven = filtering ? ScaleARGBRowDownEvenBox_Any_NEON
                                      : ScaleARGBRowDownEven_Any_NEON;
     if (IS_ALIGNED(dst_width, 4)) {
       ScaleARGBRowDownEven =
           filtering ? ScaleARGBRowDownEvenBox_NEON : ScaleARGBRowDownEven_NEON;
     }
   }
 #endif
+#if defined(HAS_SCALEARGBROWDOWNEVEN_MSA)
+  if (TestCpuFlag(kCpuHasMSA)) {
+    ScaleARGBRowDownEven = filtering ? ScaleARGBRowDownEvenBox_Any_MSA
+                                     : ScaleARGBRowDownEven_Any_MSA;
+    if (IS_ALIGNED(dst_width, 4)) {
+      ScaleARGBRowDownEven =
+          filtering ? ScaleARGBRowDownEvenBox_MSA : ScaleARGBRowDownEven_MSA;
+    }
+  }
+#endif
 
   if (filtering == kFilterLinear) {
     src_stride = 0;
   }
   for (j = 0; j < dst_height; ++j) {
     ScaleARGBRowDownEven(src_argb, src_stride, col_step, dst_argb, dst_width);
     src_argb += row_stride;
     dst_argb += dst_stride;
   }
 }
@@ skipping 706 matching lines @@
                     dst_stride_argb, dst_width, dst_height, clip_x, clip_y,
                     clip_width, clip_height, filtering);
   free(argb_buffer);
   return r;
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif