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