Added EncodedImage::GetBufferPaddingBytes.

webrtc/video_frame.h

Index: webrtc/video_frame.h
diff --git a/webrtc/video_frame.h b/webrtc/video_frame.h
index 9d2ed9fd4d978e7a487d36390c549e5c1c1ee976..497efc9d4301f6ce57a8d5eb3d928bb7b68898e3 100644
--- a/webrtc/video_frame.h
+++ b/webrtc/video_frame.h
@@ -173,6 +173,10 @@ class VideoFrame {
 // 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 GetBufferPadding(VideoCodecType codec_type);

[hbos, 2016/01/19 14:22:18]

(I originally wanted to place this in VideoDecoder but experienced circular
dependencies. This place makes sense too though.)

[stefan-webrtc, 2016/01/19 15:06:20]

Somewhat... VideoDecoder would probably have been slightly nicer, but if the
dependencies are weird maybe this is good enough.

[hbos, 2016/01/19 16:50:34]

They look weird to me.

+
   EncodedImage() : EncodedImage(nullptr, 0, 0) {}
   EncodedImage(uint8_t* buffer, size_t length, size_t size)
       : _buffer(buffer), _length(length), _size(size) {}