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 12 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBN_H_ 13 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBN_H_ 14 15 #include <vector> 16 #include "webrtc/base/basictypes.h" 17 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet.h" 18 #include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h" 19 20 namespace webrtc { 21 namespace rtcp { 22 23 // Temporary Maximum Media Stream Bit Rate Notification (TMMBN) (RFC 5104). 24 class Tmmbn : public RtcpPacket { 25 public: 26 Tmmbn() : RtcpPacket() { 27 memset(&tmmbn_, 0, sizeof(tmmbn_)); 28 } 29 30 virtual ~Tmmbn() {} 31 32 void From(uint32_t ssrc) { 33 tmmbn_.SenderSSRC = ssrc; 34 } 35 // Max 50 TMMBR can be added per TMMBN. 36 bool WithTmmbr(uint32_t ssrc, uint32_t bitrate_kbps, uint16_t overhead); 37 38 protected: 39 bool Create(uint8_t* packet, 40 size_t* index, 41 size_t max_length, 42 RtcpPacket::PacketReadyCallback* callback) const override; 43 44 private: 45 static const int kMaxNumberOfTmmbrs = 50; 46 47 size_t BlockLength() const { 48 const size_t kFciLen = 8; 49 return kCommonFbFmtLength + kFciLen * tmmbn_items_.size(); 50 } 51 52 RTCPUtility::RTCPPacketRTPFBTMMBN tmmbn_; 53 std::vector<RTCPUtility::RTCPPacketRTPFBTMMBRItem> tmmbn_items_; 54 55 RTC_DISALLOW_COPY_AND_ASSIGN(Tmmbn); 56 }; 57 58 } // namespace rtcp 59 } // namespace webrtc 60 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_TMMBN_H_ 61
