New targets call:rtp_interfaces, call:rtp_receiver, call:rtp_sender.

webrtc/call/rtp_demuxer.h

 /*
  *  Copyright (c) 2017 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_CALL_RTP_DEMUXER_H_
 #define WEBRTC_CALL_RTP_DEMUXER_H_
 
 #include <map>
 
 namespace webrtc {
 
 class RtpPacketReceived;
-
-// This class represents a receiver of an already parsed RTP packets.
-class RtpPacketSinkInterface {
- public:
-  virtual ~RtpPacketSinkInterface() {}
-  virtual void OnRtpPacket(const RtpPacketReceived& packet) = 0;
-};
+class RtpPacketSinkInterface;
 
 // This class represents the RTP demuxing, for a single RTP session (i.e., one
 // ssrc space, see RFC 7656). It isn't thread aware, leaving responsibility of
 // multithreading issues to the user of this class.
 // TODO(nisse): Should be extended to also do MID-based demux and payload-type
 // demux.
 class RtpDemuxer {
  public:
   RtpDemuxer();
   ~RtpDemuxer();
 
   // Registers a sink. The same sink can be registered for multiple ssrcs, and
   // the same ssrc can have multiple sinks. Null pointer is not allowed.
   void AddSink(uint32_t ssrc, RtpPacketSinkInterface* sink);
   // Removes a sink. Returns deletion count (a sink may be registered
   // for multiple ssrcs). Null pointer is not allowed.
   size_t RemoveSink(const RtpPacketSinkInterface* sink);
 
   // Returns true if at least one matching sink was found, otherwise false.
   bool OnRtpPacket(const RtpPacketReceived& packet);
 
  private:
   std::multimap<uint32_t, RtpPacketSinkInterface*> sinks_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_CALL_RTP_DEMUXER_H_