remb.h (1815B)
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_REMB_H_ 12 #define MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_ 13 14 #include <cstddef> 15 #include <cstdint> 16 #include <vector> 17 18 #include "modules/rtp_rtcp/source/rtcp_packet/psfb.h" 19 20 namespace webrtc { 21 namespace rtcp { 22 class CommonHeader; 23 24 // Receiver Estimated Max Bitrate (REMB) (draft-alvestrand-rmcat-remb). 25 class Remb : public Psfb { 26 public: 27 static constexpr size_t kMaxNumberOfSsrcs = 0xff; 28 29 Remb(); 30 Remb(const Remb&); 31 ~Remb() override; 32 33 // Parse assumes header is already parsed and validated. 34 bool Parse(const CommonHeader& packet); 35 36 bool SetSsrcs(std::vector<uint32_t> ssrcs); 37 void SetBitrateBps(int64_t bitrate_bps) { bitrate_bps_ = bitrate_bps; } 38 39 int64_t bitrate_bps() const { return bitrate_bps_; } 40 const std::vector<uint32_t>& ssrcs() const { return ssrcs_; } 41 42 size_t BlockLength() const override; 43 44 bool Create(uint8_t* packet, 45 size_t* index, 46 size_t max_length, 47 PacketReadyCallback callback) const override; 48 49 private: 50 static constexpr uint32_t kUniqueIdentifier = 0x52454D42; // 'R' 'E' 'M' 'B'. 51 52 // Media ssrc is unused, shadow base class setter and getter. 53 void SetMediaSsrc(uint32_t); 54 uint32_t media_ssrc() const; 55 56 int64_t bitrate_bps_; 57 std::vector<uint32_t> ssrcs_; 58 }; 59 } // namespace rtcp 60 } // namespace webrtc 61 #endif // MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_REMB_H_