Added EncodedImage::GetBufferPaddingBytes.

webrtc/video_frame.h

 /*
  *  Copyright (c) 2014 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.
  */
 
 #ifndef WEBRTC_VIDEO_FRAME_H_
 #define WEBRTC_VIDEO_FRAME_H_
 
 #include "webrtc/base/scoped_ref_ptr.h"
 #include "webrtc/common_types.h"
 #include "webrtc/common_video/include/video_frame_buffer.h"
 #include "webrtc/common_video/rotation.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
+extern const size_t kEncodedImagePaddingH264;

[mflodman, 2016/01/21 13:02:45]

Maybe this should be part of class EncodedImage, wdyt?

+
 class VideoFrame {
  public:
   VideoFrame();
   VideoFrame(const rtc::scoped_refptr<webrtc::VideoFrameBuffer>& buffer,
              uint32_t timestamp,
              int64_t render_time_ms,
              VideoRotation rotation);
 
   // TODO(pbos): Make all create/copy functions void, they should not be able to
   // fail (which should be RTC_DCHECK/CHECKed instead).
@@ skipping 134 matching lines @@
   uint32_t timestamp_;
   int64_t ntp_time_ms_;
   int64_t render_time_ms_;
   VideoRotation rotation_;
 };
 
 
 // TODO(pbos): Rename EncodedFrame and reformat this class' members.
 class EncodedImage {
  public:
+  // Some decoders require encoded image buffers to be padded with a small
+  // number of additional bytes (due to over-reading byte readers).
+  static size_t GetBufferPaddingBytes(VideoCodecType codec_type);
+
   EncodedImage() : EncodedImage(nullptr, 0, 0) {}
   EncodedImage(uint8_t* buffer, size_t length, size_t size)
       : _buffer(buffer), _length(length), _size(size) {}
 
   struct AdaptReason {
     AdaptReason()
         : quality_resolution_downscales(-1),
           bw_resolutions_disabled(-1) {}
 
     int quality_resolution_downscales;  // Number of times this frame is down
@@ skipping 13 matching lines @@
   uint8_t* _buffer;
   size_t _length;
   size_t _size;
   bool _completeFrame = false;
   AdaptReason adapt_reason_;
   int qp_ = -1;  // Quantizer value.
 };
 
 }  // namespace webrtc
 #endif  // WEBRTC_VIDEO_FRAME_H_