1 /* 2 * Copyright (c) 2016 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 MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SDES_H_ 12 #define MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SDES_H_ 13 14 #include <string> 15 #include <vector> 16 17 #include "absl/strings/string_view.h" 18 #include "modules/rtp_rtcp/source/rtcp_packet.h" 19 20 namespace webrtc { 21 namespace rtcp { 22 class CommonHeader; 23 // Source Description (SDES) (RFC 3550). 24 class Sdes : public RtcpPacket { 25 public: 26 struct Chunk { 27 uint32_t ssrc; 28 std::string cname; 29 }; 30 static constexpr uint8_t kPacketType = 202; 31 static constexpr size_t kMaxNumberOfChunks = 0x1f; 32 33 Sdes(); 34 ~Sdes() override; 35 36 // Parse assumes header is already parsed and validated. 37 bool Parse(const CommonHeader& packet); 38 39 bool AddCName(uint32_t ssrc, absl::string_view cname); 40 chunks()41 const std::vector<Chunk>& chunks() const { return chunks_; } 42 43 size_t BlockLength() const override; 44 45 bool Create(uint8_t* packet, 46 size_t* index, 47 size_t max_length, 48 PacketReadyCallback callback) const override; 49 50 private: 51 std::vector<Chunk> chunks_; 52 size_t block_length_; 53 }; 54 } // namespace rtcp 55 } // namespace webrtc 56 #endif // MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SDES_H_ 57