scale by 1 for neon implemented

source/planar_functions.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 2561 matching lines @@
 #if defined(HAS_HALFFLOATROW_AVX2)
   if (TestCpuFlag(kCpuHasAVX2)) {
     HalfFloatRow = HalfFloatRow_Any_AVX2;
     if (IS_ALIGNED(width, 16)) {
       HalfFloatRow = HalfFloatRow_AVX2;
     }
   }
 #endif
 #if defined(HAS_HALFFLOATROW_F16C)
   if (TestCpuFlag(kCpuHasAVX2) && TestCpuFlag(kCpuHasF16C)) {
-    HalfFloatRow = HalfFloatRow_Any_F16C;
+    HalfFloatRow = (scale == 1.0f) ?
+      HalfFloat1Row_Any_F16C : HalfFloatRow_Any_F16C;
     if (IS_ALIGNED(width, 16)) {
-      HalfFloatRow = HalfFloatRow_F16C;
+      HalfFloatRow = (scale == 1.0f) ? HalfFloat1Row_F16C : HalfFloatRow_F16C;
     }
   }
 #endif
 #if defined(HAS_HALFFLOATROW_NEON)
   if (TestCpuFlag(kCpuHasNEON)) {
-    HalfFloatRow = HalfFloatRow_Any_NEON;
+    HalfFloatRow = (scale == 1.0f) ?
+      HalfFloat1Row_Any_NEON : HalfFloatRow_Any_NEON;
     if (IS_ALIGNED(width, 8)) {
-      HalfFloatRow = HalfFloatRow_NEON;
+      HalfFloatRow = (scale == 1.0f) ? HalfFloat1Row_NEON : HalfFloatRow_NEON;
     }
   }
 #endif
 
   for (y = 0; y < height; ++y) {
     HalfFloatRow(src_y, dst_y, scale, width);
     src_y += src_stride_y;
     dst_y += dst_stride_y;
   }
   return 0;
@@ skipping 383 matching lines @@
     }
     free_aligned_buffer_64(rows);
   }
   return 0;
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif