1 /* 2 * Copyright (c) 2015 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 WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_PACKET_H_ 12 #define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_PACKET_H_ 13 14 #include <list> 15 #include <map> 16 #include <vector> 17 18 #include "webrtc/common_types.h" 19 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" 20 #include "webrtc/modules/remote_bitrate_estimator/include/remote_bitrate_estimator.h" 21 22 namespace webrtc { 23 namespace testing { 24 namespace bwe { 25 26 class Packet { 27 public: 28 enum Type { kMedia, kFeedback }; 29 30 Packet(); 31 Packet(int flow_id, int64_t send_time_us, size_t payload_size); 32 virtual ~Packet(); 33 34 virtual bool operator<(const Packet& rhs) const; 35 36 virtual int flow_id() const { return flow_id_; } 37 virtual void set_send_time_us(int64_t send_time_us); 38 virtual int64_t send_time_us() const { return send_time_us_; } 39 virtual int64_t sender_timestamp_us() const { return sender_timestamp_us_; } 40 virtual size_t payload_size() const { return payload_size_; } 41 virtual Packet::Type GetPacketType() const = 0; 42 virtual void set_sender_timestamp_us(int64_t sender_timestamp_us) { 43 sender_timestamp_us_ = sender_timestamp_us; 44 } 45 virtual void set_paced(bool paced) { paced_ = paced; } 46 virtual bool paced() const { return paced_; } 47 virtual int64_t creation_time_ms() const { 48 return (creation_time_us_ + 500) / 1000; 49 } 50 virtual int64_t sender_timestamp_ms() const { 51 return (sender_timestamp_us_ + 500) / 1000; 52 } 53 virtual int64_t send_time_ms() const { return (send_time_us_ + 500) / 1000; } 54 55 protected: 56 int flow_id_; 57 int64_t creation_time_us_; // Time when the packet was created. 58 int64_t send_time_us_; // Time the packet left last processor touching it. 59 int64_t sender_timestamp_us_; // Time the packet left the Sender. 60 size_t payload_size_; // Size of the (non-existent, simulated) payload. 61 bool paced_; // True if sent through paced sender. 62 }; 63 64 class MediaPacket : public Packet { 65 public: 66 MediaPacket(); 67 MediaPacket(int flow_id, 68 int64_t send_time_us, 69 size_t payload_size, 70 uint16_t sequence_number); 71 MediaPacket(int flow_id, 72 int64_t send_time_us, 73 size_t payload_size, 74 const RTPHeader& header); 75 MediaPacket(int64_t send_time_us, uint16_t sequence_number); 76 77 virtual ~MediaPacket() {} 78 79 int64_t GetAbsSendTimeInMs() const { 80 int64_t timestamp = header_.extension.absoluteSendTime 81 << kAbsSendTimeInterArrivalUpshift; 82 return 1000.0 * timestamp / static_cast<double>(1 << kInterArrivalShift); 83 } 84 void SetAbsSendTimeMs(int64_t abs_send_time_ms); 85 const RTPHeader& header() const { return header_; } 86 virtual Packet::Type GetPacketType() const { return kMedia; } 87 uint16_t sequence_number() const { return header_.sequenceNumber; } 88 89 private: 90 static const int kAbsSendTimeFraction = 18; 91 static const int kAbsSendTimeInterArrivalUpshift = 8; 92 static const int kInterArrivalShift = 93 kAbsSendTimeFraction + kAbsSendTimeInterArrivalUpshift; 94 95 RTPHeader header_; 96 }; 97 98 class FeedbackPacket : public Packet { 99 public: 100 FeedbackPacket(int flow_id, 101 int64_t this_send_time_us, 102 int64_t latest_send_time_ms) 103 : Packet(flow_id, this_send_time_us, 0), 104 latest_send_time_ms_(latest_send_time_ms) {} 105 virtual ~FeedbackPacket() {} 106 107 virtual Packet::Type GetPacketType() const { return kFeedback; } 108 int64_t latest_send_time_ms() const { return latest_send_time_ms_; } 109 110 private: 111 int64_t latest_send_time_ms_; // Time stamp for the latest sent FbPacket. 112 }; 113 114 class RembFeedback : public FeedbackPacket { 115 public: 116 RembFeedback(int flow_id, 117 int64_t send_time_us, 118 int64_t latest_send_time_ms, 119 uint32_t estimated_bps, 120 RTCPReportBlock report_block); 121 virtual ~RembFeedback() {} 122 123 uint32_t estimated_bps() const { return estimated_bps_; } 124 RTCPReportBlock report_block() const { return report_block_; } 125 126 private: 127 const uint32_t estimated_bps_; 128 const RTCPReportBlock report_block_; 129 }; 130 131 class SendSideBweFeedback : public FeedbackPacket { 132 public: 133 typedef std::map<uint16_t, int64_t> ArrivalTimesMap; 134 SendSideBweFeedback(int flow_id, 135 int64_t send_time_us, 136 int64_t latest_send_time_ms, 137 const std::vector<PacketInfo>& packet_feedback_vector); 138 virtual ~SendSideBweFeedback() {} 139 140 const std::vector<PacketInfo>& packet_feedback_vector() const { 141 return packet_feedback_vector_; 142 } 143 144 private: 145 const std::vector<PacketInfo> packet_feedback_vector_; 146 }; 147 148 class NadaFeedback : public FeedbackPacket { 149 public: 150 NadaFeedback(int flow_id, 151 int64_t this_send_time_us, 152 int64_t exp_smoothed_delay_ms, 153 int64_t est_queuing_delay_signal_ms, 154 int64_t congestion_signal, 155 float derivative, 156 float receiving_rate, 157 int64_t latest_send_time_ms) 158 : FeedbackPacket(flow_id, this_send_time_us, latest_send_time_ms), 159 exp_smoothed_delay_ms_(exp_smoothed_delay_ms), 160 est_queuing_delay_signal_ms_(est_queuing_delay_signal_ms), 161 congestion_signal_(congestion_signal), 162 derivative_(derivative), 163 receiving_rate_(receiving_rate) {} 164 virtual ~NadaFeedback() {} 165 166 int64_t exp_smoothed_delay_ms() const { return exp_smoothed_delay_ms_; } 167 int64_t est_queuing_delay_signal_ms() const { 168 return est_queuing_delay_signal_ms_; 169 } 170 int64_t congestion_signal() const { return congestion_signal_; } 171 float derivative() const { return derivative_; } 172 float receiving_rate() const { return receiving_rate_; } 173 174 private: 175 int64_t exp_smoothed_delay_ms_; // Referred as d_hat_n. 176 int64_t est_queuing_delay_signal_ms_; // Referred as d_tilde_n. 177 int64_t congestion_signal_; // Referred as x_n. 178 float derivative_; // Referred as x'_n. 179 float receiving_rate_; // Referred as R_r. 180 }; 181 182 class TcpFeedback : public FeedbackPacket { 183 public: 184 TcpFeedback(int flow_id, 185 int64_t send_time_us, 186 int64_t latest_send_time_ms, 187 const std::vector<uint16_t>& acked_packets) 188 : FeedbackPacket(flow_id, send_time_us, latest_send_time_ms), 189 acked_packets_(acked_packets) {} 190 virtual ~TcpFeedback() {} 191 192 const std::vector<uint16_t>& acked_packets() const { return acked_packets_; } 193 194 private: 195 const std::vector<uint16_t> acked_packets_; 196 }; 197 198 typedef std::list<Packet*> Packets; 199 typedef std::list<Packet*>::iterator PacketsIt; 200 typedef std::list<Packet*>::const_iterator PacketsConstIt; 201 202 } // namespace bwe 203 } // namespace testing 204 } // namespace webrtc 205 #endif // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_PACKET_H_ 206
