libvpx: Pull from upstream

source/libvpx/vpx_scale/generic/yv12extend.c

 /*
  *  Copyright (c) 2010 The WebM 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 104 matching lines @@
   if (ybf->flags & YV12_FLAG_HIGHBITDEPTH) {
     extend_plane_high(
         ybf->y_buffer, ybf->y_stride,
         ybf->y_crop_width, ybf->y_crop_height,
         ybf->border, ybf->border,
         ybf->border + ybf->y_height - ybf->y_crop_height,
         ybf->border + ybf->y_width - ybf->y_crop_width);
 
     extend_plane_high(
         ybf->u_buffer, ybf->uv_stride,
-        (ybf->y_crop_width + 1) / 2, (ybf->y_crop_height + 1) / 2,
-        ybf->border / 2, ybf->border / 2,
-        (ybf->border + ybf->y_height - ybf->y_crop_height + 1) / 2,
-        (ybf->border + ybf->y_width - ybf->y_crop_width + 1) / 2);
+        ybf->uv_crop_width, ybf->uv_crop_height,
+        uv_border, uv_border,
+        uv_border + ybf->uv_height - ybf->uv_crop_height,
+        uv_border + ybf->uv_width - ybf->uv_crop_width);
 
     extend_plane_high(
         ybf->v_buffer, ybf->uv_stride,
-        (ybf->y_crop_width + 1) / 2, (ybf->y_crop_height + 1) / 2,
-        ybf->border / 2, ybf->border / 2,
-        (ybf->border + ybf->y_height - ybf->y_crop_height + 1) / 2,
-        (ybf->border + ybf->y_width - ybf->y_crop_width + 1) / 2);
+        ybf->uv_crop_width, ybf->uv_crop_height,
+        uv_border, uv_border,
+        uv_border + ybf->uv_height - ybf->uv_crop_height,
+        uv_border + ybf->uv_width - ybf->uv_crop_width);
     return;
   }
 #endif
   extend_plane(ybf->y_buffer, ybf->y_stride,
                ybf->y_crop_width, ybf->y_crop_height,
                ybf->border, ybf->border,
                ybf->border + ybf->y_height - ybf->y_crop_height,
                ybf->border + ybf->y_width - ybf->y_crop_width);
 
   extend_plane(ybf->u_buffer, ybf->uv_stride,
@@ skipping 167 matching lines @@
     return;
   }
 #endif
 
   for (row = 0; row < src_ybc->y_height; ++row) {
     vpx_memcpy(dst, src, src_ybc->y_width);
     src += src_ybc->y_stride;
     dst += dst_ybc->y_stride;
   }
 }