Fix ARGBToI411 odd width bug.

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 661 matching lines @@
   for (x = 0; x < width - 3; x += 4) {
     uint8 ab = (src_argb[0] + src_argb[4] + src_argb[8] + src_argb[12]) >> 2;
     uint8 ag = (src_argb[1] + src_argb[5] + src_argb[9] + src_argb[13]) >> 2;
     uint8 ar = (src_argb[2] + src_argb[6] + src_argb[10] + src_argb[14]) >> 2;
     dst_u[0] = RGBToU(ar, ag, ab);
     dst_v[0] = RGBToV(ar, ag, ab);
     src_argb += 16;
     dst_u += 1;
     dst_v += 1;
   }
+  // Odd width handling mimics 'any' function which replicates last pixel.
   if ((width & 3) == 3) {
-    uint8 ab = (src_argb[0] + src_argb[4] + src_argb[8]) / 3;
-    uint8 ag = (src_argb[1] + src_argb[5] + src_argb[9]) / 3;
-    uint8 ar = (src_argb[2] + src_argb[6] + src_argb[10]) / 3;
+    uint8 ab = (src_argb[0] + src_argb[4] + src_argb[8] + src_argb[8]) >> 2;
+    uint8 ag = (src_argb[1] + src_argb[5] + src_argb[9] + src_argb[9]) >> 2;
+    uint8 ar = (src_argb[2] + src_argb[6] + src_argb[10] + src_argb[10]) >> 2;
     dst_u[0] = RGBToU(ar, ag, ab);
     dst_v[0] = RGBToV(ar, ag, ab);
   } else if ((width & 3) == 2) {
     uint8 ab = (src_argb[0] + src_argb[4]) >> 1;
     uint8 ag = (src_argb[1] + src_argb[5]) >> 1;
     uint8 ar = (src_argb[2] + src_argb[6]) >> 1;
     dst_u[0] = RGBToU(ar, ag, ab);
     dst_v[0] = RGBToV(ar, ag, ab);
   } else if ((width & 3) == 1) {
     uint8 ab = src_argb[0];
@@ skipping 2004 matching lines @@
     dst_rgb565 += twidth * 2;
     width -= twidth;
   }
 }
 #endif
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif