refactor I420AlphaToABGR to use I420AlphaToARGB internally

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 1395 matching lines @@
     src_v += 1;
     rgb_buf += 8;  // Advance 2 pixels.
   }
   if (width & 1) {
     YuvPixel(src_y[0], src_u[0], src_v[0],
              rgb_buf + 2, rgb_buf + 1, rgb_buf + 0, yuvconstants);
     rgb_buf[3] = 255;
   }
 }
 
-void I422AlphaToABGRRow_C(const uint8* src_y,
-                          const uint8* src_u,
-                          const uint8* src_v,
-                          const uint8* src_a,
-                          uint8* rgb_buf,
-                          const struct YuvConstants* yuvconstants,
-                          int width) {
-  int x;
-  for (x = 0; x < width - 1; x += 2) {
-    YuvPixel(src_y[0], src_u[0], src_v[0],
-             rgb_buf + 2, rgb_buf + 1, rgb_buf + 0, yuvconstants);
-    rgb_buf[3] = src_a[0];
-    YuvPixel(src_y[1], src_u[0], src_v[0],
-             rgb_buf + 6, rgb_buf + 5, rgb_buf + 4, yuvconstants);
-    rgb_buf[7] = src_a[1];
-    src_y += 2;
-    src_u += 1;
-    src_v += 1;
-    src_a += 2;
-    rgb_buf += 8;  // Advance 2 pixels.
-  }
-  if (width & 1) {
-    YuvPixel(src_y[0], src_u[0], src_v[0],
-             rgb_buf + 2, rgb_buf + 1, rgb_buf + 0, yuvconstants);
-    rgb_buf[3] = src_a[0];
-  }
-}
-
 void I422ToRGB24Row_C(const uint8* src_y,
                       const uint8* src_u,
                       const uint8* src_v,
                       uint8* rgb_buf,
                       const struct YuvConstants* yuvconstants,
                       int width) {
   int x;
   for (x = 0; x < width - 1; x += 2) {
     YuvPixel(src_y[0], src_u[0], src_v[0],
              rgb_buf + 0, rgb_buf + 1, rgb_buf + 2, yuvconstants);
@@ skipping 1236 matching lines @@
     dst_rgb565 += twidth * 2;
     width -= twidth;
   }
 }
 #endif
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif