1 /*
2  *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  *
10  */
11 
12 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RTPFB_H_
13 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RTPFB_H_
14 
15 #include "webrtc/base/basictypes.h"
16 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
17 
18 namespace webrtc {
19 namespace rtcp {
20 
21 // RTPFB: Transport layer feedback message.
22 // RFC4585, Section 6.2
23 class Rtpfb : public RtcpPacket {
24  public:
25   static const uint8_t kPacketType = 205;
26 
Rtpfb()27   Rtpfb() : sender_ssrc_(0), media_ssrc_(0) {}
~Rtpfb()28   virtual ~Rtpfb() {}
29 
From(uint32_t ssrc)30   void From(uint32_t ssrc) { sender_ssrc_ = ssrc; }
To(uint32_t ssrc)31   void To(uint32_t ssrc) { media_ssrc_ = ssrc; }
32 
sender_ssrc()33   uint32_t sender_ssrc() const { return sender_ssrc_; }
media_ssrc()34   uint32_t media_ssrc() const { return media_ssrc_; }
35 
36  protected:
37   static const size_t kCommonFeedbackLength = 8;
38   void ParseCommonFeedback(const uint8_t* payload);
39   void CreateCommonFeedback(uint8_t* payload) const;
40 
41  private:
42   uint32_t sender_ssrc_;
43   uint32_t media_ssrc_;
44 };
45 
46 }  // namespace rtcp
47 }  // namespace webrtc
48 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RTPFB_H_
49