Libyuv MIPS DSPR2 optimizations.

source/scale.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 824 matching lines @@
     }
 #endif
 #if defined(HAS_SCALEADDROW_NEON)
     if (TestCpuFlag(kCpuHasNEON)) {
       ScaleAddRow = ScaleAddRow_Any_NEON;
       if (IS_ALIGNED(src_width, 16)) {
         ScaleAddRow = ScaleAddRow_NEON;
       }
     }
 #endif
+#if defined(HAS_SCALEADDROW_DSPR2)
+    if (TestCpuFlag(kCpuHasDSPR2)) {
+      ScaleAddRow = ScaleAddRow_Any_DSPR2;
+      if (IS_ALIGNED(src_width, 16)) {
+        ScaleAddRow = ScaleAddRow_DSPR2;
+      }
+    }
+#endif
 
     for (j = 0; j < dst_height; ++j) {
       int boxheight;
       int iy = y >> 16;
       const uint8* src = src_ptr + iy * src_stride;
       y += dy;
       if (y > max_y) {
         y = max_y;
       }
       boxheight = MIN1((y >> 16) - iy);
@@ skipping 915 matching lines @@
   return I420Scale(src_y, src_width, src_u, src_halfwidth, src_v, src_halfwidth,
                    src_width, src_height, dst_y, dst_width, dst_u,
                    dst_halfwidth, dst_v, dst_halfwidth, dst_width, aheight,
                    interpolate ? kFilterBox : kFilterNone);
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif