Added EncodedImage::GetBufferPaddingBytes.

webrtc/common_video/video_frame.cc

 /*
  *  Copyright (c) 2012 The WebRTC 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.
  */
 
 #include "webrtc/video_frame.h"
 
 #include <string.h>
 
 #include <algorithm>  // swap
 
 #include "webrtc/base/bind.h"
 #include "webrtc/base/checks.h"
 
 namespace webrtc {
 
+// TODO(hbos): The FFmpeg video decoder will require up to 8 bytes, update this
+// when the FFmpeg decoder is added.
+const size_t EncodedImage::kBufferPaddingBytesH264 = 0;
+
 bool EqualPlane(const uint8_t* data1,
                 const uint8_t* data2,
                 int stride,
                 int width,
                 int height) {
   for (int y = 0; y < height; ++y) {
     if (memcmp(data1, data2, width) != 0)
       return false;
     data1 += stride;
     data2 += stride;
@@ skipping 203 matching lines @@
   const int half_width = (width() + 1) / 2;
   const int half_height = (height() + 1) / 2;
   return EqualPlane(buffer(kYPlane), frame.buffer(kYPlane),
                     stride(kYPlane), width(), height()) &&
          EqualPlane(buffer(kUPlane), frame.buffer(kUPlane),
                     stride(kUPlane), half_width, half_height) &&
          EqualPlane(buffer(kVPlane), frame.buffer(kVPlane),
                     stride(kVPlane), half_width, half_height);
 }
 
+size_t EncodedImage::GetBufferPaddingBytes(VideoCodecType codec_type) {
+  switch (codec_type) {
+    case kVideoCodecVP8:
+    case kVideoCodecVP9:
+      return 0;
+    case kVideoCodecH264:
+      return kBufferPaddingBytesH264;
+    case kVideoCodecI420:
+    case kVideoCodecRED:
+    case kVideoCodecULPFEC:
+    case kVideoCodecGeneric:
+    case kVideoCodecUnknown:
+      return 0;
+  }
+  RTC_NOTREACHED();
+  return 0;
+}
+
 }  // namespace webrtc