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 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RECEIVER_REPORT_H_
12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RECEIVER_REPORT_H_
13 
14 #include <vector>
15 
16 #include "webrtc/base/basictypes.h"
17 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h"
18 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/report_block.h"
19 #include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h"
20 
21 namespace webrtc {
22 namespace rtcp {
23 
24 class ReceiverReport : public RtcpPacket {
25  public:
26   static const uint8_t kPacketType = 201;
ReceiverReport()27   ReceiverReport() : sender_ssrc_(0) {}
28 
~ReceiverReport()29   virtual ~ReceiverReport() {}
30 
31   // Parse assumes header is already parsed and validated.
32   bool Parse(const RTCPUtility::RtcpCommonHeader& header,
33              const uint8_t* payload);  // Size of the payload is in the header.
34 
From(uint32_t ssrc)35   void From(uint32_t ssrc) { sender_ssrc_ = ssrc; }
36   bool WithReportBlock(const ReportBlock& block);
37 
sender_ssrc()38   uint32_t sender_ssrc() const { return sender_ssrc_; }
report_blocks()39   const std::vector<ReportBlock>& report_blocks() const {
40     return report_blocks_;
41   }
42 
43  protected:
44   bool Create(uint8_t* packet,
45               size_t* index,
46               size_t max_length,
47               RtcpPacket::PacketReadyCallback* callback) const override;
48 
49  private:
50   static const size_t kRrBaseLength = 4;
51   static const size_t kMaxNumberOfReportBlocks = 0x1F;
52 
BlockLength()53   size_t BlockLength() const {
54     return kHeaderLength + kRrBaseLength +
55            report_blocks_.size() * ReportBlock::kLength;
56   }
57 
58   uint32_t sender_ssrc_;
59   std::vector<ReportBlock> report_blocks_;
60 
61   RTC_DISALLOW_COPY_AND_ASSIGN(ReceiverReport);
62 };
63 
64 }  // namespace rtcp
65 }  // namespace webrtc
66 #endif  // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_RECEIVER_REPORT_H_
67