libvpx: Pull from upstream

source/libvpx/vp9/vp9_iface_common.h

 /*
  *  Copyright (c) 2013 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.
  */
 #ifndef VP9_VP9_IFACE_COMMON_H_
@@ skipping 23 matching lines @@
   img->bit_depth = 8;
   img->w = yv12->y_stride;
   img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9_ENC_BORDER_IN_PIXELS, 3);
   img->d_w = yv12->y_crop_width;
   img->d_h = yv12->y_crop_height;
   img->x_chroma_shift = ss_x;
   img->y_chroma_shift = ss_y;
   img->planes[VPX_PLANE_Y] = yv12->y_buffer;
   img->planes[VPX_PLANE_U] = yv12->u_buffer;
   img->planes[VPX_PLANE_V] = yv12->v_buffer;
-  img->planes[VPX_PLANE_ALPHA] = yv12->alpha_buffer;
+  img->planes[VPX_PLANE_ALPHA] = NULL;
   img->stride[VPX_PLANE_Y] = yv12->y_stride;
   img->stride[VPX_PLANE_U] = yv12->uv_stride;
   img->stride[VPX_PLANE_V] = yv12->uv_stride;
-  img->stride[VPX_PLANE_ALPHA] = yv12->alpha_stride;
+  img->stride[VPX_PLANE_ALPHA] = yv12->y_stride;
   img->bps = bps;
   img->user_priv = user_priv;
   img->img_data = yv12->buffer_alloc;
   img->img_data_owner = 0;
   img->self_allocd = 0;
 }
 
 static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,
                                        YV12_BUFFER_CONFIG *yv12) {
   yv12->y_buffer = img->planes[VPX_PLANE_Y];
   yv12->u_buffer = img->planes[VPX_PLANE_U];
   yv12->v_buffer = img->planes[VPX_PLANE_V];
-  yv12->alpha_buffer = img->planes[VPX_PLANE_ALPHA];
 
   yv12->y_crop_width  = img->d_w;
   yv12->y_crop_height = img->d_h;
   yv12->y_width  = img->d_w;
   yv12->y_height = img->d_h;
 
   yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2
                                             : yv12->y_width;
   yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2
                                              : yv12->y_height;
 
-  yv12->alpha_width = yv12->alpha_buffer ? img->d_w : 0;
-  yv12->alpha_height = yv12->alpha_buffer ? img->d_h : 0;
-
   yv12->y_stride = img->stride[VPX_PLANE_Y];
   yv12->uv_stride = img->stride[VPX_PLANE_U];
-  yv12->alpha_stride = yv12->alpha_buffer ? img->stride[VPX_PLANE_ALPHA] : 0;
 
   yv12->border  = (img->stride[VPX_PLANE_Y] - img->w) / 2;
-#if CONFIG_ALPHA
-  // For development purposes, force alpha to hold the same data as Y for now.
-  yv12->alpha_buffer = yv12->y_buffer;
-  yv12->alpha_width = yv12->y_width;
-  yv12->alpha_height = yv12->y_height;
-  yv12->alpha_stride = yv12->y_stride;
-#endif
   return VPX_CODEC_OK;
 }
 
 #endif  // VP9_VP9_IFACE_COMMON_H_