Add H422ToARGB armv7 neon version.

source/row_common.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 2260 matching lines @@
     dst_frame[2] = src_v[0];
     dst_frame[3] = 0;
   }
 }
 
 extern struct YuvConstants kYuvConstants;
 extern struct YuvConstants kYuvJConstants;
 extern struct YuvConstants kYuvHConstants;
 extern struct YuvConstantsNEON kYuvConstantsNEON;
 extern struct YuvConstantsNEON kYuvJConstantsNEON;
+extern struct YuvConstantsNEON kYuvHConstantsNEON;
 
 #define ANYYUV(NAMEANY, ANY_SIMD, YUVCONSTANTS)                                \
     void NAMEANY(const uint8* y_buf,                                           \
                  const uint8* u_buf,                                           \
                  const uint8* v_buf,                                           \
                  uint8* dst_argb,                                              \
                  int width) {                                                  \
       ANY_SIMD(y_buf, u_buf, v_buf, dst_argb, &YUVCONSTANTS, width);           \
     }
 
 #ifdef HAS_I422TOARGBMATRIXROW_NEON
 ANYYUV(I422ToARGBRow_NEON, I422ToARGBMatrixRow_NEON, kYuvConstantsNEON)
 ANYYUV(J422ToARGBRow_NEON, I422ToARGBMatrixRow_NEON, kYuvJConstantsNEON)
-//ANYYUV(H422ToARGBRow_NEON, I422ToARGBMatrixRow_NEON, kYuvHConstantsNEON)
+ANYYUV(H422ToARGBRow_NEON, I422ToARGBMatrixRow_NEON, kYuvHConstantsNEON)
 #endif
 
 #ifdef HAS_I422TOARGBMATRIXROW_SSSE3
 ANYYUV(I422ToARGBRow_SSSE3, I422ToARGBMatrixRow_SSSE3, kYuvConstants)
 ANYYUV(J422ToARGBRow_SSSE3, I422ToARGBMatrixRow_SSSE3, kYuvJConstants)
 ANYYUV(H422ToARGBRow_SSSE3, I422ToARGBMatrixRow_SSSE3, kYuvHConstants)
 #endif
 #ifdef HAS_I422TOARGBMATRIXROW_AVX2
 ANYYUV(I422ToARGBRow_AVX2, I422ToARGBMatrixRow_AVX2, kYuvConstants)
 ANYYUV(J422ToARGBRow_AVX2, I422ToARGBMatrixRow_AVX2, kYuvJConstants)
@@ skipping 421 matching lines @@
   }
   if (width & 1) {
     dst[3] = src[0];
   }
 }
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif