Implement FrameMarking header extension support

webrtc/config.h

 /*
  *  Copyright (c) 2013 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.
  */
 
@@ skipping 106 matching lines @@
   static const char kTransportSequenceNumberUri[];
   static const int kTransportSequenceNumberDefaultId;
 
   static const char kPlayoutDelayUri[];
   static const int kPlayoutDelayDefaultId;
 
   // Encryption of Header Extensions, see RFC 6904 for details:
   // https://tools.ietf.org/html/rfc6904
   static const char kEncryptHeaderExtensionsUri[];
 
+  // Frame Marking RTP Header Extension
+  // https://tools.ietf.org/html/draft-ietf-avtext-framemarking-05
+  static const char* kFrameMarkingUri;
+  static const int kFrameMarkingDefaultId;
+
   // Inclusive min and max IDs for one-byte header extensions, per RFC5285.
   static const int kMinId;
   static const int kMaxId;
 
   std::string uri;
   int id = 0;
   bool encrypt = false;
 };
 
 struct VideoStream {
@@ skipping 120 matching lines @@
 
  private:
   // Access to the copy constructor is private to force use of the Copy()
   // method for those exceptional cases where we do use it.
   VideoEncoderConfig(const VideoEncoderConfig&);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_CONFIG_H_