sdes.h (1600B)
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 <cstddef> 15 #include <cstdint> 16 #include <string> 17 #include <vector> 18 19 #include "absl/strings/string_view.h" 20 #include "modules/rtp_rtcp/source/rtcp_packet.h" 21 22 namespace webrtc { 23 namespace rtcp { 24 class CommonHeader; 25 // Source Description (SDES) (RFC 3550). 26 class Sdes : public RtcpPacket { 27 public: 28 struct Chunk { 29 uint32_t ssrc; 30 std::string cname; 31 }; 32 static constexpr uint8_t kPacketType = 202; 33 static constexpr size_t kMaxNumberOfChunks = 0x1f; 34 35 Sdes(); 36 ~Sdes() override; 37 38 // Parse assumes header is already parsed and validated. 39 bool Parse(const CommonHeader& packet); 40 41 bool AddCName(uint32_t ssrc, absl::string_view cname); 42 43 const std::vector<Chunk>& chunks() const { return chunks_; } 44 45 size_t BlockLength() const override; 46 47 bool Create(uint8_t* packet, 48 size_t* index, 49 size_t max_length, 50 PacketReadyCallback callback) const override; 51 52 private: 53 std::vector<Chunk> chunks_; 54 size_t block_length_; 55 }; 56 } // namespace rtcp 57 } // namespace webrtc 58 #endif // MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_SDES_H_