niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1 | /* |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 2 | * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 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 | |
pbos@webrtc.org | a048d7c | 2013-05-29 14:27:38 +0000 | [diff] [blame] | 11 | #include "webrtc/modules/rtp_rtcp/source/rtcp_sender.h" |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 12 | |
pbos@webrtc.org | 12dc1a3 | 2013-08-05 16:22:53 +0000 | [diff] [blame] | 13 | #include <assert.h> // assert |
| 14 | #include <stdlib.h> // rand |
stefan@webrtc.org | 9354cc9 | 2012-06-07 08:10:14 +0000 | [diff] [blame] | 15 | #include <string.h> // memcpy |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 16 | |
pbos@webrtc.org | 12dc1a3 | 2013-08-05 16:22:53 +0000 | [diff] [blame] | 17 | #include <algorithm> // min |
| 18 | |
pbos@webrtc.org | a048d7c | 2013-05-29 14:27:38 +0000 | [diff] [blame] | 19 | #include "webrtc/common_types.h" |
| 20 | #include "webrtc/modules/rtp_rtcp/source/rtp_rtcp_impl.h" |
| 21 | #include "webrtc/system_wrappers/interface/critical_section_wrapper.h" |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 22 | #include "webrtc/system_wrappers/interface/logging.h" |
pbos@webrtc.org | a048d7c | 2013-05-29 14:27:38 +0000 | [diff] [blame] | 23 | #include "webrtc/system_wrappers/interface/trace_event.h" |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 24 | |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 25 | namespace webrtc { |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 26 | |
| 27 | using RTCPUtility::RTCPCnameInformation; |
| 28 | |
edjee@google.com | 79b0289 | 2013-04-04 19:43:34 +0000 | [diff] [blame] | 29 | NACKStringBuilder::NACKStringBuilder() : |
| 30 | _stream(""), _count(0), _consecutive(false) |
| 31 | { |
| 32 | // Empty. |
| 33 | } |
| 34 | |
pbos@webrtc.org | f3e4cee | 2013-07-31 15:17:19 +0000 | [diff] [blame] | 35 | NACKStringBuilder::~NACKStringBuilder() {} |
| 36 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 37 | void NACKStringBuilder::PushNACK(uint16_t nack) |
edjee@google.com | 79b0289 | 2013-04-04 19:43:34 +0000 | [diff] [blame] | 38 | { |
| 39 | if (_count == 0) |
| 40 | { |
| 41 | _stream << nack; |
| 42 | } else if (nack == _prevNack + 1) |
| 43 | { |
| 44 | _consecutive = true; |
| 45 | } else |
| 46 | { |
| 47 | if (_consecutive) |
| 48 | { |
| 49 | _stream << "-" << _prevNack; |
| 50 | _consecutive = false; |
| 51 | } |
| 52 | _stream << "," << nack; |
| 53 | } |
| 54 | _count++; |
| 55 | _prevNack = nack; |
| 56 | } |
| 57 | |
| 58 | std::string NACKStringBuilder::GetResult() |
| 59 | { |
| 60 | if (_consecutive) |
| 61 | { |
| 62 | _stream << "-" << _prevNack; |
| 63 | _consecutive = false; |
| 64 | } |
| 65 | return _stream.str(); |
| 66 | } |
| 67 | |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 68 | RTCPSender::FeedbackState::FeedbackState() |
| 69 | : send_payload_type(0), |
| 70 | frequency_hz(0), |
pbos@webrtc.org | 2f4b14e | 2014-07-15 15:25:39 +0000 | [diff] [blame] | 71 | packets_sent(0), |
| 72 | media_bytes_sent(0), |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 73 | send_bitrate(0), |
| 74 | last_rr_ntp_secs(0), |
| 75 | last_rr_ntp_frac(0), |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 76 | remote_sr(0), |
| 77 | has_last_xr_rr(false) {} |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 78 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 79 | RTCPSender::RTCPSender(int32_t id, |
| 80 | bool audio, |
stefan@webrtc.org | 20ed36d | 2013-01-17 14:01:20 +0000 | [diff] [blame] | 81 | Clock* clock, |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 82 | ReceiveStatistics* receive_statistics) |
| 83 | : _id(id), |
| 84 | _audio(audio), |
| 85 | _clock(clock), |
| 86 | _method(kRtcpOff), |
| 87 | _criticalSectionTransport( |
| 88 | CriticalSectionWrapper::CreateCriticalSection()), |
| 89 | _cbTransport(NULL), |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 90 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 91 | _criticalSectionRTCPSender( |
| 92 | CriticalSectionWrapper::CreateCriticalSection()), |
| 93 | _usingNack(false), |
| 94 | _sending(false), |
| 95 | _sendTMMBN(false), |
| 96 | _REMB(false), |
| 97 | _sendREMB(false), |
| 98 | _TMMBR(false), |
| 99 | _IJ(false), |
| 100 | _nextTimeToSendRTCP(0), |
| 101 | start_timestamp_(0), |
| 102 | last_rtp_timestamp_(0), |
| 103 | last_frame_capture_time_ms_(-1), |
| 104 | _SSRC(0), |
| 105 | _remoteSSRC(0), |
| 106 | _CNAME(), |
| 107 | receive_statistics_(receive_statistics), |
| 108 | internal_report_blocks_(), |
| 109 | external_report_blocks_(), |
| 110 | _csrcCNAMEs(), |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 111 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 112 | _cameraDelayMS(0), |
stefan@webrtc.org | 7da3459 | 2013-04-09 14:56:29 +0000 | [diff] [blame] | 113 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 114 | _lastSendReport(), |
| 115 | _lastRTCPTime(), |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 116 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 117 | last_xr_rr_(), |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 118 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 119 | _sequenceNumberFIR(0), |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 120 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 121 | _rembBitrate(0), |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 122 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 123 | _tmmbrHelp(), |
| 124 | _tmmbr_Send(0), |
| 125 | _packetOH_Send(0), |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 126 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 127 | _appSend(false), |
| 128 | _appSubType(0), |
| 129 | _appName(), |
| 130 | _appData(NULL), |
| 131 | _appLength(0), |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 132 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 133 | xrSendReceiverReferenceTimeEnabled_(false), |
| 134 | _xrSendVoIPMetric(false), |
| 135 | _xrVoIPMetric() { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 136 | memset(_CNAME, 0, sizeof(_CNAME)); |
| 137 | memset(_lastSendReport, 0, sizeof(_lastSendReport)); |
| 138 | memset(_lastRTCPTime, 0, sizeof(_lastRTCPTime)); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 139 | } |
| 140 | |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 141 | RTCPSender::~RTCPSender() { |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 142 | delete [] _appData; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 143 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 144 | while (!internal_report_blocks_.empty()) { |
| 145 | delete internal_report_blocks_.begin()->second; |
| 146 | internal_report_blocks_.erase(internal_report_blocks_.begin()); |
| 147 | } |
| 148 | while (!external_report_blocks_.empty()) { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 149 | std::map<uint32_t, RTCPReportBlock*>::iterator it = |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 150 | external_report_blocks_.begin(); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 151 | delete it->second; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 152 | external_report_blocks_.erase(it); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 153 | } |
| 154 | while (!_csrcCNAMEs.empty()) { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 155 | std::map<uint32_t, RTCPCnameInformation*>::iterator it = |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 156 | _csrcCNAMEs.begin(); |
| 157 | delete it->second; |
| 158 | _csrcCNAMEs.erase(it); |
| 159 | } |
| 160 | delete _criticalSectionTransport; |
| 161 | delete _criticalSectionRTCPSender; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 162 | } |
| 163 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 164 | int32_t |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 165 | RTCPSender::RegisterSendTransport(Transport* outgoingTransport) |
| 166 | { |
| 167 | CriticalSectionScoped lock(_criticalSectionTransport); |
| 168 | _cbTransport = outgoingTransport; |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | RTCPMethod |
| 173 | RTCPSender::Status() const |
| 174 | { |
| 175 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 176 | return _method; |
| 177 | } |
| 178 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 179 | void RTCPSender::SetRTCPStatus(RTCPMethod method) { |
| 180 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 181 | _method = method; |
| 182 | |
| 183 | if (method == kRtcpOff) |
| 184 | return; |
| 185 | _nextTimeToSendRTCP = |
| 186 | _clock->TimeInMilliseconds() + |
| 187 | (_audio ? RTCP_INTERVAL_AUDIO_MS / 2 : RTCP_INTERVAL_VIDEO_MS / 2); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 188 | } |
| 189 | |
| 190 | bool |
| 191 | RTCPSender::Sending() const |
| 192 | { |
| 193 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 194 | return _sending; |
| 195 | } |
| 196 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 197 | int32_t |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 198 | RTCPSender::SetSendingStatus(const FeedbackState& feedback_state, bool sending) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 199 | { |
| 200 | bool sendRTCPBye = false; |
| 201 | { |
| 202 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 203 | |
| 204 | if(_method != kRtcpOff) |
| 205 | { |
| 206 | if(sending == false && _sending == true) |
| 207 | { |
| 208 | // Trigger RTCP bye |
| 209 | sendRTCPBye = true; |
| 210 | } |
| 211 | } |
| 212 | _sending = sending; |
| 213 | } |
| 214 | if(sendRTCPBye) |
| 215 | { |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 216 | return SendRTCP(feedback_state, kRtcpBye); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 217 | } |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | bool |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 222 | RTCPSender::REMB() const |
| 223 | { |
| 224 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 225 | return _REMB; |
| 226 | } |
| 227 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 228 | void RTCPSender::SetREMBStatus(bool enable) { |
| 229 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 230 | _REMB = enable; |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 231 | } |
| 232 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 233 | void RTCPSender::SetREMBData(uint32_t bitrate, |
| 234 | const std::vector<uint32_t>& ssrcs) { |
| 235 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 236 | _rembBitrate = bitrate; |
| 237 | remb_ssrcs_ = ssrcs; |
stefan@webrtc.org | 4ef438e | 2014-07-11 09:55:30 +0000 | [diff] [blame] | 238 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 239 | _sendREMB = true; |
| 240 | // Send a REMB immediately if we have a new REMB. The frequency of REMBs is |
| 241 | // throttled by the caller. |
| 242 | _nextTimeToSendRTCP = _clock->TimeInMilliseconds(); |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | bool |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 246 | RTCPSender::TMMBR() const |
| 247 | { |
| 248 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 249 | return _TMMBR; |
| 250 | } |
| 251 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 252 | void RTCPSender::SetTMMBRStatus(bool enable) { |
| 253 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 254 | _TMMBR = enable; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 255 | } |
| 256 | |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 257 | bool |
| 258 | RTCPSender::IJ() const |
| 259 | { |
| 260 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 261 | return _IJ; |
| 262 | } |
| 263 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 264 | void RTCPSender::SetIJStatus(bool enable) { |
| 265 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 266 | _IJ = enable; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 267 | } |
| 268 | |
stefan@webrtc.org | 7c3523c | 2012-09-11 07:00:42 +0000 | [diff] [blame] | 269 | void RTCPSender::SetStartTimestamp(uint32_t start_timestamp) { |
pbos@webrtc.org | 180e516 | 2014-07-11 15:36:26 +0000 | [diff] [blame] | 270 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
stefan@webrtc.org | 7c3523c | 2012-09-11 07:00:42 +0000 | [diff] [blame] | 271 | start_timestamp_ = start_timestamp; |
| 272 | } |
| 273 | |
| 274 | void RTCPSender::SetLastRtpTime(uint32_t rtp_timestamp, |
| 275 | int64_t capture_time_ms) { |
henrika@webrtc.org | 19da719 | 2013-04-05 14:34:57 +0000 | [diff] [blame] | 276 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
stefan@webrtc.org | 7c3523c | 2012-09-11 07:00:42 +0000 | [diff] [blame] | 277 | last_rtp_timestamp_ = rtp_timestamp; |
| 278 | if (capture_time_ms < 0) { |
| 279 | // We don't currently get a capture time from VoiceEngine. |
stefan@webrtc.org | 7da3459 | 2013-04-09 14:56:29 +0000 | [diff] [blame] | 280 | last_frame_capture_time_ms_ = _clock->TimeInMilliseconds(); |
stefan@webrtc.org | 7c3523c | 2012-09-11 07:00:42 +0000 | [diff] [blame] | 281 | } else { |
| 282 | last_frame_capture_time_ms_ = capture_time_ms; |
| 283 | } |
| 284 | } |
| 285 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 286 | void RTCPSender::SetSSRC(uint32_t ssrc) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 287 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 288 | |
| 289 | if(_SSRC != 0) |
| 290 | { |
| 291 | // not first SetSSRC, probably due to a collision |
| 292 | // schedule a new RTCP report |
pwestin@webrtc.org | 0644b1d | 2011-12-01 15:42:31 +0000 | [diff] [blame] | 293 | // make sure that we send a RTP packet |
stefan@webrtc.org | a678a3b | 2013-01-21 07:42:11 +0000 | [diff] [blame] | 294 | _nextTimeToSendRTCP = _clock->TimeInMilliseconds() + 100; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 295 | } |
| 296 | _SSRC = ssrc; |
| 297 | } |
| 298 | |
wu@webrtc.org | 822fbd8 | 2013-08-15 23:38:54 +0000 | [diff] [blame] | 299 | void RTCPSender::SetRemoteSSRC(uint32_t ssrc) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 300 | { |
| 301 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 302 | _remoteSSRC = ssrc; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 303 | } |
| 304 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 305 | int32_t RTCPSender::SetCameraDelay(int32_t delayMS) { |
stefan@webrtc.org | 7da3459 | 2013-04-09 14:56:29 +0000 | [diff] [blame] | 306 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 307 | if(delayMS > 1000 || delayMS < -1000) |
| 308 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 309 | LOG(LS_WARNING) << "Delay can't be larger than 1 second: " |
| 310 | << delayMS << " ms"; |
stefan@webrtc.org | 7da3459 | 2013-04-09 14:56:29 +0000 | [diff] [blame] | 311 | return -1; |
| 312 | } |
| 313 | _cameraDelayMS = delayMS; |
| 314 | return 0; |
| 315 | } |
| 316 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 317 | int32_t RTCPSender::SetCNAME(const char cName[RTCP_CNAME_SIZE]) { |
tommi@webrtc.org | a990e12 | 2012-04-26 15:28:22 +0000 | [diff] [blame] | 318 | if (!cName) |
| 319 | return -1; |
| 320 | |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 321 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 322 | _CNAME[RTCP_CNAME_SIZE - 1] = 0; |
| 323 | strncpy(_CNAME, cName, RTCP_CNAME_SIZE - 1); |
| 324 | return 0; |
| 325 | } |
| 326 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 327 | int32_t RTCPSender::AddMixedCNAME(uint32_t SSRC, |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 328 | const char cName[RTCP_CNAME_SIZE]) { |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 329 | assert(cName); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 330 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 331 | if (_csrcCNAMEs.size() >= kRtpCsrcSize) { |
| 332 | return -1; |
| 333 | } |
| 334 | RTCPCnameInformation* ptr = new RTCPCnameInformation(); |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 335 | ptr->name[RTCP_CNAME_SIZE - 1] = 0; |
| 336 | strncpy(ptr->name, cName, RTCP_CNAME_SIZE - 1); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 337 | _csrcCNAMEs[SSRC] = ptr; |
| 338 | return 0; |
| 339 | } |
| 340 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 341 | int32_t RTCPSender::RemoveMixedCNAME(uint32_t SSRC) { |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 342 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 343 | std::map<uint32_t, RTCPCnameInformation*>::iterator it = |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 344 | _csrcCNAMEs.find(SSRC); |
| 345 | |
| 346 | if (it == _csrcCNAMEs.end()) { |
| 347 | return -1; |
| 348 | } |
| 349 | delete it->second; |
| 350 | _csrcCNAMEs.erase(it); |
| 351 | return 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 352 | } |
| 353 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 354 | bool RTCPSender::TimeToSendRTCPReport(bool sendKeyframeBeforeRTP) const { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 355 | /* |
| 356 | For audio we use a fix 5 sec interval |
| 357 | |
| 358 | For video we use 1 sec interval fo a BW smaller than 360 kbit/s, |
stefan@webrtc.org | 9d4762e | 2014-03-24 17:13:00 +0000 | [diff] [blame] | 359 | technicaly we break the max 5% RTCP BW for video below 10 kbit/s but |
| 360 | that should be extremely rare |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 361 | |
| 362 | |
| 363 | From RFC 3550 |
| 364 | |
| 365 | MAX RTCP BW is 5% if the session BW |
| 366 | A send report is approximately 65 bytes inc CNAME |
stefan@webrtc.org | 9d4762e | 2014-03-24 17:13:00 +0000 | [diff] [blame] | 367 | A receiver report is approximately 28 bytes |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 368 | |
| 369 | The RECOMMENDED value for the reduced minimum in seconds is 360 |
| 370 | divided by the session bandwidth in kilobits/second. This minimum |
| 371 | is smaller than 5 seconds for bandwidths greater than 72 kb/s. |
| 372 | |
| 373 | If the participant has not yet sent an RTCP packet (the variable |
| 374 | initial is true), the constant Tmin is set to 2.5 seconds, else it |
| 375 | is set to 5 seconds. |
| 376 | |
| 377 | The interval between RTCP packets is varied randomly over the |
| 378 | range [0.5,1.5] times the calculated interval to avoid unintended |
| 379 | synchronization of all participants |
| 380 | |
| 381 | if we send |
| 382 | If the participant is a sender (we_sent true), the constant C is |
| 383 | set to the average RTCP packet size (avg_rtcp_size) divided by 25% |
| 384 | of the RTCP bandwidth (rtcp_bw), and the constant n is set to the |
| 385 | number of senders. |
| 386 | |
| 387 | if we receive only |
| 388 | If we_sent is not true, the constant C is set |
| 389 | to the average RTCP packet size divided by 75% of the RTCP |
| 390 | bandwidth. The constant n is set to the number of receivers |
| 391 | (members - senders). If the number of senders is greater than |
| 392 | 25%, senders and receivers are treated together. |
| 393 | |
| 394 | reconsideration NOT required for peer-to-peer |
| 395 | "timer reconsideration" is |
| 396 | employed. This algorithm implements a simple back-off mechanism |
| 397 | which causes users to hold back RTCP packet transmission if the |
| 398 | group sizes are increasing. |
| 399 | |
| 400 | n = number of members |
| 401 | C = avg_size/(rtcpBW/4) |
| 402 | |
| 403 | 3. The deterministic calculated interval Td is set to max(Tmin, n*C). |
| 404 | |
| 405 | 4. The calculated interval T is set to a number uniformly distributed |
| 406 | between 0.5 and 1.5 times the deterministic calculated interval. |
| 407 | |
| 408 | 5. The resulting value of T is divided by e-3/2=1.21828 to compensate |
| 409 | for the fact that the timer reconsideration algorithm converges to |
| 410 | a value of the RTCP bandwidth below the intended average |
| 411 | */ |
| 412 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 413 | int64_t now = _clock->TimeInMilliseconds(); |
xians@webrtc.org | 8738d27 | 2011-11-25 13:43:53 +0000 | [diff] [blame] | 414 | |
| 415 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 416 | |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 417 | if(_method == kRtcpOff) |
| 418 | { |
| 419 | return false; |
| 420 | } |
| 421 | |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 422 | if(!_audio && sendKeyframeBeforeRTP) |
| 423 | { |
| 424 | // for video key-frames we want to send the RTCP before the large key-frame |
| 425 | // if we have a 100 ms margin |
| 426 | now += RTCP_SEND_BEFORE_KEY_FRAME_MS; |
| 427 | } |
| 428 | |
stefan@webrtc.org | 9d4762e | 2014-03-24 17:13:00 +0000 | [diff] [blame] | 429 | if(now >= _nextTimeToSendRTCP) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 430 | { |
| 431 | return true; |
| 432 | |
| 433 | } else if(now < 0x0000ffff && _nextTimeToSendRTCP > 0xffff0000) // 65 sec margin |
| 434 | { |
| 435 | // wrap |
| 436 | return true; |
| 437 | } |
| 438 | return false; |
| 439 | } |
| 440 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 441 | uint32_t |
| 442 | RTCPSender::LastSendReport( uint32_t& lastRTCPTime) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 443 | { |
| 444 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 445 | |
| 446 | lastRTCPTime = _lastRTCPTime[0]; |
| 447 | return _lastSendReport[0]; |
| 448 | } |
| 449 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 450 | uint32_t RTCPSender::SendTimeOfSendReport(uint32_t sendReport) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 451 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 452 | |
| 453 | // This is only saved when we are the sender |
| 454 | if((_lastSendReport[0] == 0) || (sendReport == 0)) |
| 455 | { |
| 456 | return 0; // will be ignored |
| 457 | } else |
| 458 | { |
| 459 | for(int i = 0; i < RTCP_NUMBER_OF_SR; ++i) |
| 460 | { |
| 461 | if( _lastSendReport[i] == sendReport) |
| 462 | { |
| 463 | return _lastRTCPTime[i]; |
| 464 | } |
| 465 | } |
| 466 | } |
| 467 | return 0; |
| 468 | } |
| 469 | |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 470 | bool RTCPSender::SendTimeOfXrRrReport(uint32_t mid_ntp, |
| 471 | int64_t* time_ms) const { |
| 472 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 473 | |
| 474 | if (last_xr_rr_.empty()) { |
| 475 | return false; |
| 476 | } |
| 477 | std::map<uint32_t, int64_t>::const_iterator it = last_xr_rr_.find(mid_ntp); |
| 478 | if (it == last_xr_rr_.end()) { |
| 479 | return false; |
| 480 | } |
| 481 | *time_ms = it->second; |
| 482 | return true; |
| 483 | } |
| 484 | |
asapersson@webrtc.org | 8098e07 | 2014-02-19 11:59:02 +0000 | [diff] [blame] | 485 | void RTCPSender::GetPacketTypeCounter( |
| 486 | RtcpPacketTypeCounter* packet_counter) const { |
| 487 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 488 | *packet_counter = packet_type_counter_; |
| 489 | } |
| 490 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 491 | int32_t RTCPSender::AddExternalReportBlock( |
| 492 | uint32_t SSRC, |
| 493 | const RTCPReportBlock* reportBlock) { |
| 494 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 495 | return AddReportBlock(SSRC, &external_report_blocks_, reportBlock); |
| 496 | } |
| 497 | |
| 498 | int32_t RTCPSender::AddReportBlock( |
| 499 | uint32_t SSRC, |
| 500 | std::map<uint32_t, RTCPReportBlock*>* report_blocks, |
| 501 | const RTCPReportBlock* reportBlock) { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 502 | assert(reportBlock); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 503 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 504 | if (report_blocks->size() >= RTCP_MAX_REPORT_BLOCKS) { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 505 | LOG(LS_WARNING) << "Too many report blocks."; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 506 | return -1; |
| 507 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 508 | std::map<uint32_t, RTCPReportBlock*>::iterator it = |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 509 | report_blocks->find(SSRC); |
| 510 | if (it != report_blocks->end()) { |
stefan@webrtc.org | 8d0cd07 | 2012-12-03 14:01:46 +0000 | [diff] [blame] | 511 | delete it->second; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 512 | report_blocks->erase(it); |
stefan@webrtc.org | 8d0cd07 | 2012-12-03 14:01:46 +0000 | [diff] [blame] | 513 | } |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 514 | RTCPReportBlock* copyReportBlock = new RTCPReportBlock(); |
| 515 | memcpy(copyReportBlock, reportBlock, sizeof(RTCPReportBlock)); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 516 | (*report_blocks)[SSRC] = copyReportBlock; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 517 | return 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 518 | } |
| 519 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 520 | int32_t RTCPSender::RemoveExternalReportBlock(uint32_t SSRC) { |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 521 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 522 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 523 | std::map<uint32_t, RTCPReportBlock*>::iterator it = |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 524 | external_report_blocks_.find(SSRC); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 525 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 526 | if (it == external_report_blocks_.end()) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 527 | return -1; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 528 | } |
| 529 | delete it->second; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 530 | external_report_blocks_.erase(it); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 531 | return 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 532 | } |
| 533 | |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 534 | int32_t RTCPSender::BuildSR(const FeedbackState& feedback_state, |
| 535 | uint8_t* rtcpbuffer, |
| 536 | int& pos, |
| 537 | uint32_t NTPsec, |
| 538 | uint32_t NTPfrac) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 539 | { |
| 540 | // sanity |
| 541 | if(pos + 52 >= IP_PACKET_SIZE) |
| 542 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 543 | LOG(LS_WARNING) << "Failed to build Sender Report."; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 544 | return -2; |
| 545 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 546 | uint32_t RTPtime; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 547 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 548 | uint32_t posNumberOfReportBlocks = pos; |
| 549 | rtcpbuffer[pos++]=(uint8_t)0x80; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 550 | |
| 551 | // Sender report |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 552 | rtcpbuffer[pos++]=(uint8_t)200; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 553 | |
| 554 | for(int i = (RTCP_NUMBER_OF_SR-2); i >= 0; i--) |
| 555 | { |
| 556 | // shift old |
| 557 | _lastSendReport[i+1] = _lastSendReport[i]; |
| 558 | _lastRTCPTime[i+1] =_lastRTCPTime[i]; |
| 559 | } |
| 560 | |
stefan@webrtc.org | b8e7f4c | 2013-04-12 11:56:23 +0000 | [diff] [blame] | 561 | _lastRTCPTime[0] = Clock::NtpToMs(NTPsec, NTPfrac); |
stefan@webrtc.org | 7c3523c | 2012-09-11 07:00:42 +0000 | [diff] [blame] | 562 | _lastSendReport[0] = (NTPsec << 16) + (NTPfrac >> 16); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 563 | |
stefan@webrtc.org | 7da3459 | 2013-04-09 14:56:29 +0000 | [diff] [blame] | 564 | // The timestamp of this RTCP packet should be estimated as the timestamp of |
| 565 | // the frame being captured at this moment. We are calculating that |
| 566 | // timestamp as the last frame's timestamp + the time since the last frame |
| 567 | // was captured. |
pbos@webrtc.org | 180e516 | 2014-07-11 15:36:26 +0000 | [diff] [blame] | 568 | RTPtime = start_timestamp_ + last_rtp_timestamp_ + |
| 569 | (_clock->TimeInMilliseconds() - last_frame_capture_time_ms_) * |
| 570 | (feedback_state.frequency_hz / 1000); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 571 | |
| 572 | // Add sender data |
| 573 | // Save for our length field |
| 574 | pos++; |
| 575 | pos++; |
| 576 | |
| 577 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 578 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 579 | pos += 4; |
| 580 | // NTP |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 581 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, NTPsec); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 582 | pos += 4; |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 583 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, NTPfrac); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 584 | pos += 4; |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 585 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, RTPtime); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 586 | pos += 4; |
| 587 | |
| 588 | //sender's packet count |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 589 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, |
pbos@webrtc.org | 2f4b14e | 2014-07-15 15:25:39 +0000 | [diff] [blame] | 590 | feedback_state.packets_sent); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 591 | pos += 4; |
| 592 | |
| 593 | //sender's octet count |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 594 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, |
pbos@webrtc.org | 2f4b14e | 2014-07-15 15:25:39 +0000 | [diff] [blame] | 595 | feedback_state.media_bytes_sent); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 596 | pos += 4; |
| 597 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 598 | uint8_t numberOfReportBlocks = 0; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 599 | int32_t retVal = WriteAllReportBlocksToBuffer(rtcpbuffer, pos, |
| 600 | numberOfReportBlocks, |
| 601 | NTPsec, NTPfrac); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 602 | if(retVal < 0) |
| 603 | { |
| 604 | // |
| 605 | return retVal ; |
| 606 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 607 | pos = retVal; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 608 | rtcpbuffer[posNumberOfReportBlocks] += numberOfReportBlocks; |
| 609 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 610 | uint16_t len = uint16_t((pos/4) -1); |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 611 | RtpUtility::AssignUWord16ToBuffer(rtcpbuffer + 2, len); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 612 | return 0; |
| 613 | } |
| 614 | |
| 615 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 616 | int32_t RTCPSender::BuildSDEC(uint8_t* rtcpbuffer, int& pos) { |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 617 | size_t lengthCname = strlen(_CNAME); |
| 618 | assert(lengthCname < RTCP_CNAME_SIZE); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 619 | |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 620 | // sanity |
| 621 | if(pos + 12 + lengthCname >= IP_PACKET_SIZE) { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 622 | LOG(LS_WARNING) << "Failed to build SDEC."; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 623 | return -2; |
| 624 | } |
| 625 | // SDEC Source Description |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 626 | |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 627 | // We always need to add SDES CNAME |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 628 | rtcpbuffer[pos++] = static_cast<uint8_t>(0x80 + 1 + _csrcCNAMEs.size()); |
| 629 | rtcpbuffer[pos++] = static_cast<uint8_t>(202); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 630 | |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 631 | // handle SDES length later on |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 632 | uint32_t SDESLengthPos = pos; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 633 | pos++; |
| 634 | pos++; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 635 | |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 636 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 637 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 638 | pos += 4; |
| 639 | |
| 640 | // CNAME = 1 |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 641 | rtcpbuffer[pos++] = static_cast<uint8_t>(1); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 642 | |
| 643 | // |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 644 | rtcpbuffer[pos++] = static_cast<uint8_t>(lengthCname); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 645 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 646 | uint16_t SDESLength = 10; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 647 | |
| 648 | memcpy(&rtcpbuffer[pos], _CNAME, lengthCname); |
| 649 | pos += lengthCname; |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 650 | SDESLength += (uint16_t)lengthCname; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 651 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 652 | uint16_t padding = 0; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 653 | // We must have a zero field even if we have an even multiple of 4 bytes |
| 654 | if ((pos % 4) == 0) { |
| 655 | padding++; |
| 656 | rtcpbuffer[pos++]=0; |
| 657 | } |
| 658 | while ((pos % 4) != 0) { |
| 659 | padding++; |
| 660 | rtcpbuffer[pos++]=0; |
| 661 | } |
| 662 | SDESLength += padding; |
| 663 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 664 | std::map<uint32_t, RTCPUtility::RTCPCnameInformation*>::iterator it = |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 665 | _csrcCNAMEs.begin(); |
| 666 | |
| 667 | for(; it != _csrcCNAMEs.end(); it++) { |
| 668 | RTCPCnameInformation* cname = it->second; |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 669 | uint32_t SSRC = it->first; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 670 | |
| 671 | // Add SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 672 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 673 | pos += 4; |
| 674 | |
| 675 | // CNAME = 1 |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 676 | rtcpbuffer[pos++] = static_cast<uint8_t>(1); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 677 | |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 678 | size_t length = strlen(cname->name); |
| 679 | assert(length < RTCP_CNAME_SIZE); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 680 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 681 | rtcpbuffer[pos++]= static_cast<uint8_t>(length); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 682 | SDESLength += 6; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 683 | |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 684 | memcpy(&rtcpbuffer[pos],cname->name, length); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 685 | |
pwestin@webrtc.org | f6bb77a | 2012-01-24 17:16:59 +0000 | [diff] [blame] | 686 | pos += length; |
| 687 | SDESLength += length; |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 688 | uint16_t padding = 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 689 | |
| 690 | // We must have a zero field even if we have an even multiple of 4 bytes |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 691 | if((pos % 4) == 0){ |
| 692 | padding++; |
| 693 | rtcpbuffer[pos++]=0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 694 | } |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 695 | while((pos % 4) != 0){ |
| 696 | padding++; |
| 697 | rtcpbuffer[pos++] = 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 698 | } |
| 699 | SDESLength += padding; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 700 | } |
| 701 | // in 32-bit words minus one and we don't count the header |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 702 | uint16_t buffer_length = (SDESLength / 4) - 1; |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 703 | RtpUtility::AssignUWord16ToBuffer(rtcpbuffer + SDESLengthPos, buffer_length); |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 704 | return 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 705 | } |
| 706 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 707 | int32_t RTCPSender::BuildRR(uint8_t* rtcpbuffer, |
| 708 | int& pos, |
| 709 | uint32_t NTPsec, |
| 710 | uint32_t NTPfrac) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 711 | // sanity one block |
| 712 | if(pos + 32 >= IP_PACKET_SIZE) |
| 713 | { |
| 714 | return -2; |
| 715 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 716 | uint32_t posNumberOfReportBlocks = pos; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 717 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 718 | rtcpbuffer[pos++]=(uint8_t)0x80; |
| 719 | rtcpbuffer[pos++]=(uint8_t)201; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 720 | |
| 721 | // Save for our length field |
| 722 | pos++; |
| 723 | pos++; |
| 724 | |
| 725 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 726 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 727 | pos += 4; |
| 728 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 729 | uint8_t numberOfReportBlocks = 0; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 730 | int retVal = WriteAllReportBlocksToBuffer(rtcpbuffer, pos, |
| 731 | numberOfReportBlocks, |
| 732 | NTPsec, NTPfrac); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 733 | if(retVal < 0) |
| 734 | { |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 735 | return pos; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 736 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 737 | pos = retVal; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 738 | rtcpbuffer[posNumberOfReportBlocks] += numberOfReportBlocks; |
| 739 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 740 | uint16_t len = uint16_t((pos)/4 -1); |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 741 | RtpUtility::AssignUWord16ToBuffer(rtcpbuffer + 2, len); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 742 | return 0; |
| 743 | } |
| 744 | |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 745 | // From RFC 5450: Transmission Time Offsets in RTP Streams. |
| 746 | // 0 1 2 3 |
| 747 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 748 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 749 | // hdr |V=2|P| RC | PT=IJ=195 | length | |
| 750 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 751 | // | inter-arrival jitter | |
| 752 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 753 | // . . |
| 754 | // . . |
| 755 | // . . |
| 756 | // | inter-arrival jitter | |
| 757 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 758 | // |
| 759 | // If present, this RTCP packet must be placed after a receiver report |
| 760 | // (inside a compound RTCP packet), and MUST have the same value for RC |
| 761 | // (reception report count) as the receiver report. |
| 762 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 763 | int32_t |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 764 | RTCPSender::BuildExtendedJitterReport( |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 765 | uint8_t* rtcpbuffer, |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 766 | int& pos, |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 767 | const uint32_t jitterTransmissionTimeOffset) |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 768 | { |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 769 | if (external_report_blocks_.size() > 0) |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 770 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 771 | // TODO(andresp): Remove external report blocks since they are not |
| 772 | // supported. |
| 773 | LOG(LS_ERROR) << "Handling of external report blocks not implemented."; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 774 | return 0; |
| 775 | } |
| 776 | |
| 777 | // sanity |
| 778 | if(pos + 8 >= IP_PACKET_SIZE) |
| 779 | { |
| 780 | return -2; |
| 781 | } |
| 782 | // add picture loss indicator |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 783 | uint8_t RC = 1; |
| 784 | rtcpbuffer[pos++]=(uint8_t)0x80 + RC; |
| 785 | rtcpbuffer[pos++]=(uint8_t)195; |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 786 | |
| 787 | // Used fixed length of 2 |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 788 | rtcpbuffer[pos++]=(uint8_t)0; |
| 789 | rtcpbuffer[pos++]=(uint8_t)(1); |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 790 | |
| 791 | // Add inter-arrival jitter |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 792 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, |
| 793 | jitterTransmissionTimeOffset); |
asapersson@webrtc.org | 5249cc8 | 2011-12-16 14:31:37 +0000 | [diff] [blame] | 794 | pos += 4; |
| 795 | return 0; |
| 796 | } |
| 797 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 798 | int32_t |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 799 | RTCPSender::BuildPLI(uint8_t* rtcpbuffer, int& pos) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 800 | { |
| 801 | // sanity |
| 802 | if(pos + 12 >= IP_PACKET_SIZE) |
| 803 | { |
| 804 | return -2; |
| 805 | } |
| 806 | // add picture loss indicator |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 807 | uint8_t FMT = 1; |
| 808 | rtcpbuffer[pos++]=(uint8_t)0x80 + FMT; |
| 809 | rtcpbuffer[pos++]=(uint8_t)206; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 810 | |
| 811 | //Used fixed length of 2 |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 812 | rtcpbuffer[pos++]=(uint8_t)0; |
| 813 | rtcpbuffer[pos++]=(uint8_t)(2); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 814 | |
| 815 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 816 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 817 | pos += 4; |
| 818 | |
| 819 | // Add the remote SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 820 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _remoteSSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 821 | pos += 4; |
| 822 | return 0; |
| 823 | } |
| 824 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 825 | int32_t RTCPSender::BuildFIR(uint8_t* rtcpbuffer, |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 826 | int& pos, |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 827 | bool repeat) { |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 828 | // sanity |
| 829 | if(pos + 20 >= IP_PACKET_SIZE) { |
| 830 | return -2; |
| 831 | } |
| 832 | if (!repeat) { |
| 833 | _sequenceNumberFIR++; // do not increase if repetition |
| 834 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 835 | |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 836 | // add full intra request indicator |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 837 | uint8_t FMT = 4; |
| 838 | rtcpbuffer[pos++] = (uint8_t)0x80 + FMT; |
| 839 | rtcpbuffer[pos++] = (uint8_t)206; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 840 | |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 841 | //Length of 4 |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 842 | rtcpbuffer[pos++] = (uint8_t)0; |
| 843 | rtcpbuffer[pos++] = (uint8_t)(4); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 844 | |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 845 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 846 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 847 | pos += 4; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 848 | |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 849 | // RFC 5104 4.3.1.2. Semantics |
| 850 | // SSRC of media source |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 851 | rtcpbuffer[pos++] = (uint8_t)0; |
| 852 | rtcpbuffer[pos++] = (uint8_t)0; |
| 853 | rtcpbuffer[pos++] = (uint8_t)0; |
| 854 | rtcpbuffer[pos++] = (uint8_t)0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 855 | |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 856 | // Additional Feedback Control Information (FCI) |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 857 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _remoteSSRC); |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 858 | pos += 4; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 859 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 860 | rtcpbuffer[pos++] = (uint8_t)(_sequenceNumberFIR); |
| 861 | rtcpbuffer[pos++] = (uint8_t)0; |
| 862 | rtcpbuffer[pos++] = (uint8_t)0; |
| 863 | rtcpbuffer[pos++] = (uint8_t)0; |
pwestin@webrtc.org | 5e95481 | 2012-02-10 12:13:12 +0000 | [diff] [blame] | 864 | return 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 865 | } |
| 866 | |
| 867 | /* |
| 868 | 0 1 2 3 |
| 869 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 870 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 871 | | First | Number | PictureID | |
| 872 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 873 | */ |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 874 | int32_t RTCPSender::BuildSLI(uint8_t* rtcpbuffer, int& pos, uint8_t pictureID) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 875 | // sanity |
| 876 | if(pos + 16 >= IP_PACKET_SIZE) |
| 877 | { |
| 878 | return -2; |
| 879 | } |
| 880 | // add slice loss indicator |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 881 | uint8_t FMT = 2; |
| 882 | rtcpbuffer[pos++]=(uint8_t)0x80 + FMT; |
| 883 | rtcpbuffer[pos++]=(uint8_t)206; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 884 | |
| 885 | //Used fixed length of 3 |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 886 | rtcpbuffer[pos++]=(uint8_t)0; |
| 887 | rtcpbuffer[pos++]=(uint8_t)(3); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 888 | |
| 889 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 890 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 891 | pos += 4; |
| 892 | |
| 893 | // Add the remote SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 894 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _remoteSSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 895 | pos += 4; |
| 896 | |
| 897 | // Add first, number & picture ID 6 bits |
| 898 | // first = 0, 13 - bits |
| 899 | // number = 0x1fff, 13 - bits only ones for now |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 900 | uint32_t sliField = (0x1fff << 6)+ (0x3f & pictureID); |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 901 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, sliField); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 902 | pos += 4; |
| 903 | return 0; |
| 904 | } |
| 905 | |
| 906 | /* |
| 907 | 0 1 2 3 |
| 908 | 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 909 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 910 | | PB |0| Payload Type| Native RPSI bit string | |
| 911 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 912 | | defined per codec ... | Padding (0) | |
| 913 | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 914 | */ |
| 915 | /* |
| 916 | * Note: not generic made for VP8 |
| 917 | */ |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 918 | int32_t RTCPSender::BuildRPSI(uint8_t* rtcpbuffer, |
| 919 | int& pos, |
| 920 | uint64_t pictureID, |
| 921 | uint8_t payloadType) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 922 | // sanity |
| 923 | if(pos + 24 >= IP_PACKET_SIZE) |
| 924 | { |
| 925 | return -2; |
| 926 | } |
| 927 | // add Reference Picture Selection Indication |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 928 | uint8_t FMT = 3; |
| 929 | rtcpbuffer[pos++]=(uint8_t)0x80 + FMT; |
| 930 | rtcpbuffer[pos++]=(uint8_t)206; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 931 | |
| 932 | // calc length |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 933 | uint32_t bitsRequired = 7; |
| 934 | uint8_t bytesRequired = 1; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 935 | while((pictureID>>bitsRequired) > 0) |
| 936 | { |
| 937 | bitsRequired += 7; |
| 938 | bytesRequired++; |
| 939 | } |
| 940 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 941 | uint8_t size = 3; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 942 | if(bytesRequired > 6) |
| 943 | { |
| 944 | size = 5; |
| 945 | } else if(bytesRequired > 2) |
| 946 | { |
| 947 | size = 4; |
| 948 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 949 | rtcpbuffer[pos++]=(uint8_t)0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 950 | rtcpbuffer[pos++]=size; |
| 951 | |
| 952 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 953 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 954 | pos += 4; |
| 955 | |
| 956 | // Add the remote SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 957 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _remoteSSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 958 | pos += 4; |
| 959 | |
| 960 | // calc padding length |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 961 | uint8_t paddingBytes = 4-((2+bytesRequired)%4); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 962 | if(paddingBytes == 4) |
| 963 | { |
| 964 | paddingBytes = 0; |
| 965 | } |
| 966 | // add padding length in bits |
| 967 | rtcpbuffer[pos] = paddingBytes*8; // padding can be 0, 8, 16 or 24 |
| 968 | pos++; |
| 969 | |
| 970 | // add payload type |
| 971 | rtcpbuffer[pos] = payloadType; |
| 972 | pos++; |
| 973 | |
| 974 | // add picture ID |
| 975 | for(int i = bytesRequired-1; i > 0; i--) |
| 976 | { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 977 | rtcpbuffer[pos] = 0x80 | uint8_t(pictureID >> (i*7)); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 978 | pos++; |
| 979 | } |
| 980 | // add last byte of picture ID |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 981 | rtcpbuffer[pos] = uint8_t(pictureID & 0x7f); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 982 | pos++; |
| 983 | |
| 984 | // add padding |
| 985 | for(int j = 0; j <paddingBytes; j++) |
| 986 | { |
| 987 | rtcpbuffer[pos] = 0; |
| 988 | pos++; |
| 989 | } |
| 990 | return 0; |
| 991 | } |
| 992 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 993 | int32_t |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 994 | RTCPSender::BuildREMB(uint8_t* rtcpbuffer, int& pos) |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 995 | { |
| 996 | // sanity |
pbos@webrtc.org | 49ff40e | 2014-11-13 14:42:37 +0000 | [diff] [blame] | 997 | if(pos + 20 + 4 * remb_ssrcs_.size() >= IP_PACKET_SIZE) |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 998 | { |
| 999 | return -2; |
| 1000 | } |
| 1001 | // add application layer feedback |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1002 | uint8_t FMT = 15; |
| 1003 | rtcpbuffer[pos++]=(uint8_t)0x80 + FMT; |
| 1004 | rtcpbuffer[pos++]=(uint8_t)206; |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1005 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1006 | rtcpbuffer[pos++]=(uint8_t)0; |
pbos@webrtc.org | 49ff40e | 2014-11-13 14:42:37 +0000 | [diff] [blame] | 1007 | rtcpbuffer[pos++]=remb_ssrcs_.size() + 4; |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1008 | |
| 1009 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1010 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1011 | pos += 4; |
| 1012 | |
| 1013 | // Remote SSRC must be 0 |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1014 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, 0); |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1015 | pos += 4; |
| 1016 | |
| 1017 | rtcpbuffer[pos++]='R'; |
| 1018 | rtcpbuffer[pos++]='E'; |
| 1019 | rtcpbuffer[pos++]='M'; |
| 1020 | rtcpbuffer[pos++]='B'; |
| 1021 | |
pbos@webrtc.org | 49ff40e | 2014-11-13 14:42:37 +0000 | [diff] [blame] | 1022 | rtcpbuffer[pos++] = remb_ssrcs_.size(); |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1023 | // 6 bit Exp |
| 1024 | // 18 bit mantissa |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1025 | uint8_t brExp = 0; |
| 1026 | for(uint32_t i=0; i<64; i++) |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1027 | { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1028 | if(_rembBitrate <= ((uint32_t)262143 << i)) |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1029 | { |
| 1030 | brExp = i; |
| 1031 | break; |
| 1032 | } |
| 1033 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1034 | const uint32_t brMantissa = (_rembBitrate >> brExp); |
| 1035 | rtcpbuffer[pos++]=(uint8_t)((brExp << 2) + ((brMantissa >> 16) & 0x03)); |
| 1036 | rtcpbuffer[pos++]=(uint8_t)(brMantissa >> 8); |
| 1037 | rtcpbuffer[pos++]=(uint8_t)(brMantissa); |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1038 | |
pbos@webrtc.org | 49ff40e | 2014-11-13 14:42:37 +0000 | [diff] [blame] | 1039 | for (size_t i = 0; i < remb_ssrcs_.size(); i++) |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1040 | { |
pbos@webrtc.org | 49ff40e | 2014-11-13 14:42:37 +0000 | [diff] [blame] | 1041 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, remb_ssrcs_[i]); |
| 1042 | pos += 4; |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1043 | } |
| 1044 | return 0; |
| 1045 | } |
| 1046 | |
stefan@webrtc.org | 9354cc9 | 2012-06-07 08:10:14 +0000 | [diff] [blame] | 1047 | void |
| 1048 | RTCPSender::SetTargetBitrate(unsigned int target_bitrate) |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1049 | { |
mflodman@webrtc.org | 117c119 | 2012-01-13 08:52:58 +0000 | [diff] [blame] | 1050 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
pwestin@webrtc.org | 741da94 | 2011-09-20 13:52:04 +0000 | [diff] [blame] | 1051 | _tmmbr_Send = target_bitrate / 1000; |
mflodman@webrtc.org | 117c119 | 2012-01-13 08:52:58 +0000 | [diff] [blame] | 1052 | } |
| 1053 | |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1054 | int32_t RTCPSender::BuildTMMBR(ModuleRtpRtcpImpl* rtp_rtcp_module, |
| 1055 | uint8_t* rtcpbuffer, |
| 1056 | int& pos) { |
| 1057 | if (rtp_rtcp_module == NULL) |
| 1058 | return -1; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1059 | // Before sending the TMMBR check the received TMMBN, only an owner is allowed to raise the bitrate |
| 1060 | // If the sender is an owner of the TMMBN -> send TMMBR |
| 1061 | // If not an owner but the TMMBR would enter the TMMBN -> send TMMBR |
| 1062 | |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1063 | // get current bounding set from RTCP receiver |
| 1064 | bool tmmbrOwner = false; |
hta@webrtc.org | 54536bb | 2012-05-03 14:07:23 +0000 | [diff] [blame] | 1065 | // store in candidateSet, allocates one extra slot |
| 1066 | TMMBRSet* candidateSet = _tmmbrHelp.CandidateSet(); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1067 | |
hta@webrtc.org | 54536bb | 2012-05-03 14:07:23 +0000 | [diff] [blame] | 1068 | // holding _criticalSectionRTCPSender while calling RTCPreceiver which |
| 1069 | // will accuire _criticalSectionRTCPReceiver is a potental deadlock but |
| 1070 | // since RTCPreceiver is not doing the reverse we should be fine |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1071 | int32_t lengthOfBoundingSet = |
| 1072 | rtp_rtcp_module->BoundingSet(tmmbrOwner, candidateSet); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1073 | |
| 1074 | if(lengthOfBoundingSet > 0) |
| 1075 | { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1076 | for (int32_t i = 0; i < lengthOfBoundingSet; i++) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1077 | { |
hta@webrtc.org | 54536bb | 2012-05-03 14:07:23 +0000 | [diff] [blame] | 1078 | if( candidateSet->Tmmbr(i) == _tmmbr_Send && |
| 1079 | candidateSet->PacketOH(i) == _packetOH_Send) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1080 | { |
| 1081 | // do not send the same tuple |
| 1082 | return 0; |
| 1083 | } |
| 1084 | } |
| 1085 | if(!tmmbrOwner) |
| 1086 | { |
| 1087 | // use received bounding set as candidate set |
| 1088 | // add current tuple |
hta@webrtc.org | 54536bb | 2012-05-03 14:07:23 +0000 | [diff] [blame] | 1089 | candidateSet->SetEntry(lengthOfBoundingSet, |
| 1090 | _tmmbr_Send, |
| 1091 | _packetOH_Send, |
| 1092 | _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1093 | int numCandidates = lengthOfBoundingSet+ 1; |
| 1094 | |
| 1095 | // find bounding set |
| 1096 | TMMBRSet* boundingSet = NULL; |
| 1097 | int numBoundingSet = _tmmbrHelp.FindTMMBRBoundingSet(boundingSet); |
| 1098 | if(numBoundingSet > 0 || numBoundingSet <= numCandidates) |
| 1099 | { |
| 1100 | tmmbrOwner = _tmmbrHelp.IsOwner(_SSRC, numBoundingSet); |
| 1101 | } |
| 1102 | if(!tmmbrOwner) |
| 1103 | { |
| 1104 | // did not enter bounding set, no meaning to send this request |
| 1105 | return 0; |
| 1106 | } |
| 1107 | } |
| 1108 | } |
| 1109 | |
| 1110 | if(_tmmbr_Send) |
| 1111 | { |
| 1112 | // sanity |
| 1113 | if(pos + 20 >= IP_PACKET_SIZE) |
| 1114 | { |
| 1115 | return -2; |
| 1116 | } |
| 1117 | // add TMMBR indicator |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1118 | uint8_t FMT = 3; |
| 1119 | rtcpbuffer[pos++]=(uint8_t)0x80 + FMT; |
| 1120 | rtcpbuffer[pos++]=(uint8_t)205; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1121 | |
| 1122 | //Length of 4 |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1123 | rtcpbuffer[pos++]=(uint8_t)0; |
| 1124 | rtcpbuffer[pos++]=(uint8_t)(4); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1125 | |
| 1126 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1127 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1128 | pos += 4; |
| 1129 | |
| 1130 | // RFC 5104 4.2.1.2. Semantics |
| 1131 | |
| 1132 | // SSRC of media source |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1133 | rtcpbuffer[pos++]=(uint8_t)0; |
| 1134 | rtcpbuffer[pos++]=(uint8_t)0; |
| 1135 | rtcpbuffer[pos++]=(uint8_t)0; |
| 1136 | rtcpbuffer[pos++]=(uint8_t)0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1137 | |
| 1138 | // Additional Feedback Control Information (FCI) |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1139 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _remoteSSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1140 | pos += 4; |
| 1141 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1142 | uint32_t bitRate = _tmmbr_Send*1000; |
| 1143 | uint32_t mmbrExp = 0; |
| 1144 | for(uint32_t i=0;i<64;i++) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1145 | { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1146 | if(bitRate <= ((uint32_t)131071 << i)) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1147 | { |
| 1148 | mmbrExp = i; |
| 1149 | break; |
| 1150 | } |
| 1151 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1152 | uint32_t mmbrMantissa = (bitRate >> mmbrExp); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1153 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1154 | rtcpbuffer[pos++]=(uint8_t)((mmbrExp << 2) + ((mmbrMantissa >> 15) & 0x03)); |
| 1155 | rtcpbuffer[pos++]=(uint8_t)(mmbrMantissa >> 7); |
| 1156 | rtcpbuffer[pos++]=(uint8_t)((mmbrMantissa << 1) + ((_packetOH_Send >> 8)& 0x01)); |
| 1157 | rtcpbuffer[pos++]=(uint8_t)(_packetOH_Send); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1158 | } |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1162 | int32_t |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1163 | RTCPSender::BuildTMMBN(uint8_t* rtcpbuffer, int& pos) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1164 | { |
| 1165 | TMMBRSet* boundingSet = _tmmbrHelp.BoundingSetToSend(); |
| 1166 | if(boundingSet == NULL) |
| 1167 | { |
| 1168 | return -1; |
| 1169 | } |
| 1170 | // sanity |
hta@webrtc.org | 54536bb | 2012-05-03 14:07:23 +0000 | [diff] [blame] | 1171 | if(pos + 12 + boundingSet->lengthOfSet()*8 >= IP_PACKET_SIZE) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1172 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 1173 | LOG(LS_WARNING) << "Failed to build TMMBN."; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1174 | return -2; |
| 1175 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1176 | uint8_t FMT = 4; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1177 | // add TMMBN indicator |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1178 | rtcpbuffer[pos++]=(uint8_t)0x80 + FMT; |
| 1179 | rtcpbuffer[pos++]=(uint8_t)205; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1180 | |
| 1181 | //Add length later |
| 1182 | int posLength = pos; |
| 1183 | pos++; |
| 1184 | pos++; |
| 1185 | |
| 1186 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1187 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1188 | pos += 4; |
| 1189 | |
| 1190 | // RFC 5104 4.2.2.2. Semantics |
| 1191 | |
| 1192 | // SSRC of media source |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1193 | rtcpbuffer[pos++]=(uint8_t)0; |
| 1194 | rtcpbuffer[pos++]=(uint8_t)0; |
| 1195 | rtcpbuffer[pos++]=(uint8_t)0; |
| 1196 | rtcpbuffer[pos++]=(uint8_t)0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1197 | |
| 1198 | // Additional Feedback Control Information (FCI) |
| 1199 | int numBoundingSet = 0; |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1200 | for(uint32_t n=0; n< boundingSet->lengthOfSet(); n++) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1201 | { |
hta@webrtc.org | 54536bb | 2012-05-03 14:07:23 +0000 | [diff] [blame] | 1202 | if (boundingSet->Tmmbr(n) > 0) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1203 | { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1204 | uint32_t tmmbrSSRC = boundingSet->Ssrc(n); |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1205 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, tmmbrSSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1206 | pos += 4; |
| 1207 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1208 | uint32_t bitRate = boundingSet->Tmmbr(n) * 1000; |
| 1209 | uint32_t mmbrExp = 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1210 | for(int i=0; i<64; i++) |
| 1211 | { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1212 | if(bitRate <= ((uint32_t)131071 << i)) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1213 | { |
| 1214 | mmbrExp = i; |
| 1215 | break; |
| 1216 | } |
| 1217 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1218 | uint32_t mmbrMantissa = (bitRate >> mmbrExp); |
| 1219 | uint32_t measuredOH = boundingSet->PacketOH(n); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1220 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1221 | rtcpbuffer[pos++]=(uint8_t)((mmbrExp << 2) + ((mmbrMantissa >> 15) & 0x03)); |
| 1222 | rtcpbuffer[pos++]=(uint8_t)(mmbrMantissa >> 7); |
| 1223 | rtcpbuffer[pos++]=(uint8_t)((mmbrMantissa << 1) + ((measuredOH >> 8)& 0x01)); |
| 1224 | rtcpbuffer[pos++]=(uint8_t)(measuredOH); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1225 | numBoundingSet++; |
| 1226 | } |
| 1227 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1228 | uint16_t length= (uint16_t)(2+2*numBoundingSet); |
| 1229 | rtcpbuffer[posLength++]=(uint8_t)(length>>8); |
| 1230 | rtcpbuffer[posLength]=(uint8_t)(length); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1231 | return 0; |
| 1232 | } |
| 1233 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1234 | int32_t |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1235 | RTCPSender::BuildAPP(uint8_t* rtcpbuffer, int& pos) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1236 | { |
| 1237 | // sanity |
| 1238 | if(_appData == NULL) |
| 1239 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 1240 | LOG(LS_WARNING) << "Failed to build app specific."; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1241 | return -1; |
| 1242 | } |
| 1243 | if(pos + 12 + _appLength >= IP_PACKET_SIZE) |
| 1244 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 1245 | LOG(LS_WARNING) << "Failed to build app specific."; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1246 | return -2; |
| 1247 | } |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1248 | rtcpbuffer[pos++]=(uint8_t)0x80 + _appSubType; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1249 | |
| 1250 | // Add APP ID |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1251 | rtcpbuffer[pos++]=(uint8_t)204; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1252 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1253 | uint16_t length = (_appLength>>2) + 2; // include SSRC and name |
| 1254 | rtcpbuffer[pos++]=(uint8_t)(length>>8); |
| 1255 | rtcpbuffer[pos++]=(uint8_t)(length); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1256 | |
| 1257 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1258 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1259 | pos += 4; |
| 1260 | |
| 1261 | // Add our application name |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1262 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _appName); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1263 | pos += 4; |
| 1264 | |
| 1265 | // Add the data |
| 1266 | memcpy(rtcpbuffer +pos, _appData,_appLength); |
| 1267 | pos += _appLength; |
| 1268 | return 0; |
| 1269 | } |
| 1270 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 1271 | int32_t RTCPSender::BuildNACK(uint8_t* rtcpbuffer, |
| 1272 | int& pos, |
| 1273 | int32_t nackSize, |
| 1274 | const uint16_t* nackList, |
| 1275 | std::string* nackString) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1276 | // sanity |
| 1277 | if(pos + 16 >= IP_PACKET_SIZE) |
| 1278 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 1279 | LOG(LS_WARNING) << "Failed to build NACK."; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1280 | return -2; |
| 1281 | } |
| 1282 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1283 | // int size, uint16_t* nackList |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1284 | // add nack list |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1285 | uint8_t FMT = 1; |
| 1286 | rtcpbuffer[pos++]=(uint8_t)0x80 + FMT; |
| 1287 | rtcpbuffer[pos++]=(uint8_t)205; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1288 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1289 | rtcpbuffer[pos++]=(uint8_t) 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1290 | int nackSizePos = pos; |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1291 | rtcpbuffer[pos++]=(uint8_t)(3); //setting it to one kNACK signal as default |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1292 | |
| 1293 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1294 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1295 | pos += 4; |
| 1296 | |
| 1297 | // Add the remote SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1298 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _remoteSSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1299 | pos += 4; |
| 1300 | |
andresp@webrtc.org | 523f937 | 2013-04-11 11:30:39 +0000 | [diff] [blame] | 1301 | // Build NACK bitmasks and write them to the RTCP message. |
| 1302 | // The nack list should be sorted and not contain duplicates if one |
| 1303 | // wants to build the smallest rtcp nack packet. |
| 1304 | int numOfNackFields = 0; |
| 1305 | int maxNackFields = std::min<int>(kRtcpMaxNackFields, |
| 1306 | (IP_PACKET_SIZE - pos) / 4); |
| 1307 | int i = 0; |
| 1308 | while (i < nackSize && numOfNackFields < maxNackFields) { |
andresp@webrtc.org | 523f937 | 2013-04-11 11:30:39 +0000 | [diff] [blame] | 1309 | uint16_t nack = nackList[i++]; |
| 1310 | uint16_t bitmask = 0; |
| 1311 | while (i < nackSize) { |
| 1312 | int shift = static_cast<uint16_t>(nackList[i] - nack) - 1; |
| 1313 | if (shift >= 0 && shift <= 15) { |
andresp@webrtc.org | 523f937 | 2013-04-11 11:30:39 +0000 | [diff] [blame] | 1314 | bitmask |= (1 << shift); |
| 1315 | ++i; |
| 1316 | } else { |
| 1317 | break; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1318 | } |
andresp@webrtc.org | 523f937 | 2013-04-11 11:30:39 +0000 | [diff] [blame] | 1319 | } |
| 1320 | // Write the sequence number and the bitmask to the packet. |
| 1321 | assert(pos + 4 < IP_PACKET_SIZE); |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1322 | RtpUtility::AssignUWord16ToBuffer(rtcpbuffer + pos, nack); |
andresp@webrtc.org | 523f937 | 2013-04-11 11:30:39 +0000 | [diff] [blame] | 1323 | pos += 2; |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1324 | RtpUtility::AssignUWord16ToBuffer(rtcpbuffer + pos, bitmask); |
andresp@webrtc.org | 523f937 | 2013-04-11 11:30:39 +0000 | [diff] [blame] | 1325 | pos += 2; |
| 1326 | numOfNackFields++; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1327 | } |
andresp@webrtc.org | 523f937 | 2013-04-11 11:30:39 +0000 | [diff] [blame] | 1328 | rtcpbuffer[nackSizePos] = static_cast<uint8_t>(2 + numOfNackFields); |
asapersson@webrtc.org | 2dd3134 | 2014-10-29 12:42:30 +0000 | [diff] [blame] | 1329 | |
| 1330 | if (i != nackSize) { |
| 1331 | LOG(LS_WARNING) << "Nack list too large for one packet."; |
| 1332 | } |
| 1333 | |
| 1334 | // Report stats. |
| 1335 | NACKStringBuilder stringBuilder; |
| 1336 | for (int idx = 0; idx < i; ++idx) { |
| 1337 | stringBuilder.PushNACK(nackList[idx]); |
| 1338 | nack_stats_.ReportRequest(nackList[idx]); |
| 1339 | } |
edjee@google.com | 79b0289 | 2013-04-04 19:43:34 +0000 | [diff] [blame] | 1340 | *nackString = stringBuilder.GetResult(); |
asapersson@webrtc.org | 2dd3134 | 2014-10-29 12:42:30 +0000 | [diff] [blame] | 1341 | packet_type_counter_.nack_requests = nack_stats_.requests(); |
| 1342 | packet_type_counter_.unique_nack_requests = nack_stats_.unique_requests(); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1343 | return 0; |
| 1344 | } |
| 1345 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1346 | int32_t RTCPSender::BuildBYE(uint8_t* rtcpbuffer, int& pos) { |
| 1347 | // sanity |
| 1348 | if (pos + 8 >= IP_PACKET_SIZE) { |
| 1349 | return -2; |
| 1350 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1351 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1352 | // Add a bye packet |
| 1353 | // Number of SSRC + CSRCs. |
| 1354 | rtcpbuffer[pos++] = (uint8_t)0x80 + 1 + csrcs_.size(); |
| 1355 | rtcpbuffer[pos++] = (uint8_t)203; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1356 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1357 | // length |
| 1358 | rtcpbuffer[pos++] = (uint8_t)0; |
| 1359 | rtcpbuffer[pos++] = (uint8_t)(1 + csrcs_.size()); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1360 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1361 | // Add our own SSRC |
| 1362 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
| 1363 | pos += 4; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1364 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1365 | // add CSRCs |
| 1366 | for (size_t i = 0; i < csrcs_.size(); i++) { |
| 1367 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, csrcs_[i]); |
| 1368 | pos += 4; |
| 1369 | } |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1370 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1371 | return 0; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1372 | } |
| 1373 | |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1374 | int32_t RTCPSender::BuildReceiverReferenceTime(uint8_t* buffer, |
| 1375 | int& pos, |
| 1376 | uint32_t ntp_sec, |
| 1377 | uint32_t ntp_frac) { |
| 1378 | const int kRrTimeBlockLength = 20; |
| 1379 | if (pos + kRrTimeBlockLength >= IP_PACKET_SIZE) { |
| 1380 | return -2; |
| 1381 | } |
| 1382 | |
| 1383 | if (last_xr_rr_.size() >= RTCP_NUMBER_OF_SR) { |
| 1384 | last_xr_rr_.erase(last_xr_rr_.begin()); |
| 1385 | } |
| 1386 | last_xr_rr_.insert(std::pair<uint32_t, int64_t>( |
| 1387 | RTCPUtility::MidNtp(ntp_sec, ntp_frac), |
| 1388 | Clock::NtpToMs(ntp_sec, ntp_frac))); |
| 1389 | |
| 1390 | // Add XR header. |
| 1391 | buffer[pos++] = 0x80; |
| 1392 | buffer[pos++] = 207; |
| 1393 | buffer[pos++] = 0; // XR packet length. |
| 1394 | buffer[pos++] = 4; // XR packet length. |
| 1395 | |
| 1396 | // Add our own SSRC. |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1397 | RtpUtility::AssignUWord32ToBuffer(buffer + pos, _SSRC); |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1398 | pos += 4; |
| 1399 | |
| 1400 | // 0 1 2 3 |
| 1401 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 1402 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 1403 | // | BT=4 | reserved | block length = 2 | |
| 1404 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 1405 | // | NTP timestamp, most significant word | |
| 1406 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 1407 | // | NTP timestamp, least significant word | |
| 1408 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 1409 | |
| 1410 | // Add Receiver Reference Time Report block. |
| 1411 | buffer[pos++] = 4; // BT. |
| 1412 | buffer[pos++] = 0; // Reserved. |
| 1413 | buffer[pos++] = 0; // Block length. |
| 1414 | buffer[pos++] = 2; // Block length. |
| 1415 | |
| 1416 | // NTP timestamp. |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1417 | RtpUtility::AssignUWord32ToBuffer(buffer + pos, ntp_sec); |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1418 | pos += 4; |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1419 | RtpUtility::AssignUWord32ToBuffer(buffer + pos, ntp_frac); |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1420 | pos += 4; |
| 1421 | |
| 1422 | return 0; |
| 1423 | } |
| 1424 | |
| 1425 | int32_t RTCPSender::BuildDlrr(uint8_t* buffer, |
| 1426 | int& pos, |
| 1427 | const RtcpReceiveTimeInfo& info) { |
| 1428 | const int kDlrrBlockLength = 24; |
| 1429 | if (pos + kDlrrBlockLength >= IP_PACKET_SIZE) { |
| 1430 | return -2; |
| 1431 | } |
| 1432 | |
| 1433 | // Add XR header. |
| 1434 | buffer[pos++] = 0x80; |
| 1435 | buffer[pos++] = 207; |
| 1436 | buffer[pos++] = 0; // XR packet length. |
| 1437 | buffer[pos++] = 5; // XR packet length. |
| 1438 | |
| 1439 | // Add our own SSRC. |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1440 | RtpUtility::AssignUWord32ToBuffer(buffer + pos, _SSRC); |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1441 | pos += 4; |
| 1442 | |
| 1443 | // 0 1 2 3 |
| 1444 | // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| 1445 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 1446 | // | BT=5 | reserved | block length | |
| 1447 | // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
| 1448 | // | SSRC_1 (SSRC of first receiver) | sub- |
| 1449 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ block |
| 1450 | // | last RR (LRR) | 1 |
| 1451 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| 1452 | // | delay since last RR (DLRR) | |
| 1453 | // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ |
| 1454 | // | SSRC_2 (SSRC of second receiver) | sub- |
| 1455 | // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ block |
| 1456 | // : ... : 2 |
| 1457 | |
| 1458 | // Add DLRR sub block. |
| 1459 | buffer[pos++] = 5; // BT. |
| 1460 | buffer[pos++] = 0; // Reserved. |
| 1461 | buffer[pos++] = 0; // Block length. |
| 1462 | buffer[pos++] = 3; // Block length. |
| 1463 | |
| 1464 | // NTP timestamp. |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1465 | RtpUtility::AssignUWord32ToBuffer(buffer + pos, info.sourceSSRC); |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1466 | pos += 4; |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1467 | RtpUtility::AssignUWord32ToBuffer(buffer + pos, info.lastRR); |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1468 | pos += 4; |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1469 | RtpUtility::AssignUWord32ToBuffer(buffer + pos, info.delaySinceLastRR); |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1470 | pos += 4; |
| 1471 | |
| 1472 | return 0; |
| 1473 | } |
| 1474 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1475 | int32_t |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1476 | RTCPSender::BuildVoIPMetric(uint8_t* rtcpbuffer, int& pos) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1477 | { |
| 1478 | // sanity |
| 1479 | if(pos + 44 >= IP_PACKET_SIZE) |
| 1480 | { |
| 1481 | return -2; |
| 1482 | } |
| 1483 | |
| 1484 | // Add XR header |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1485 | rtcpbuffer[pos++]=(uint8_t)0x80; |
| 1486 | rtcpbuffer[pos++]=(uint8_t)207; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1487 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1488 | uint32_t XRLengthPos = pos; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1489 | |
| 1490 | // handle length later on |
| 1491 | pos++; |
| 1492 | pos++; |
| 1493 | |
| 1494 | // Add our own SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1495 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _SSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1496 | pos += 4; |
| 1497 | |
| 1498 | // Add a VoIP metrics block |
| 1499 | rtcpbuffer[pos++]=7; |
| 1500 | rtcpbuffer[pos++]=0; |
| 1501 | rtcpbuffer[pos++]=0; |
| 1502 | rtcpbuffer[pos++]=8; |
| 1503 | |
| 1504 | // Add the remote SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 1505 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + pos, _remoteSSRC); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1506 | pos += 4; |
| 1507 | |
| 1508 | rtcpbuffer[pos++] = _xrVoIPMetric.lossRate; |
| 1509 | rtcpbuffer[pos++] = _xrVoIPMetric.discardRate; |
| 1510 | rtcpbuffer[pos++] = _xrVoIPMetric.burstDensity; |
| 1511 | rtcpbuffer[pos++] = _xrVoIPMetric.gapDensity; |
| 1512 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1513 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.burstDuration >> 8); |
| 1514 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.burstDuration); |
| 1515 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.gapDuration >> 8); |
| 1516 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.gapDuration); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1517 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1518 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.roundTripDelay >> 8); |
| 1519 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.roundTripDelay); |
| 1520 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.endSystemDelay >> 8); |
| 1521 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.endSystemDelay); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1522 | |
| 1523 | rtcpbuffer[pos++] = _xrVoIPMetric.signalLevel; |
| 1524 | rtcpbuffer[pos++] = _xrVoIPMetric.noiseLevel; |
| 1525 | rtcpbuffer[pos++] = _xrVoIPMetric.RERL; |
| 1526 | rtcpbuffer[pos++] = _xrVoIPMetric.Gmin; |
| 1527 | |
| 1528 | rtcpbuffer[pos++] = _xrVoIPMetric.Rfactor; |
| 1529 | rtcpbuffer[pos++] = _xrVoIPMetric.extRfactor; |
| 1530 | rtcpbuffer[pos++] = _xrVoIPMetric.MOSLQ; |
| 1531 | rtcpbuffer[pos++] = _xrVoIPMetric.MOSCQ; |
| 1532 | |
| 1533 | rtcpbuffer[pos++] = _xrVoIPMetric.RXconfig; |
| 1534 | rtcpbuffer[pos++] = 0; // reserved |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1535 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.JBnominal >> 8); |
| 1536 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.JBnominal); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1537 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1538 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.JBmax >> 8); |
| 1539 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.JBmax); |
| 1540 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.JBabsMax >> 8); |
| 1541 | rtcpbuffer[pos++] = (uint8_t)(_xrVoIPMetric.JBabsMax); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1542 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1543 | rtcpbuffer[XRLengthPos]=(uint8_t)(0); |
| 1544 | rtcpbuffer[XRLengthPos+1]=(uint8_t)(10); |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1545 | return 0; |
| 1546 | } |
| 1547 | |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1548 | int32_t RTCPSender::SendRTCP(const FeedbackState& feedback_state, |
| 1549 | uint32_t packetTypeFlags, |
| 1550 | int32_t nackSize, |
| 1551 | const uint16_t* nackList, |
| 1552 | bool repeat, |
| 1553 | uint64_t pictureID) { |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1554 | { |
| 1555 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 1556 | if(_method == kRtcpOff) |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1557 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 1558 | LOG(LS_WARNING) << "Can't send rtcp if it is disabled."; |
pwestin@webrtc.org | 8edb39d | 2011-12-22 07:40:33 +0000 | [diff] [blame] | 1559 | return -1; |
| 1560 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1561 | } |
| 1562 | uint8_t rtcp_buffer[IP_PACKET_SIZE]; |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1563 | int rtcp_length = PrepareRTCP(feedback_state, |
| 1564 | packetTypeFlags, |
| 1565 | nackSize, |
| 1566 | nackList, |
| 1567 | repeat, |
| 1568 | pictureID, |
| 1569 | rtcp_buffer, |
| 1570 | IP_PACKET_SIZE); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1571 | if (rtcp_length < 0) { |
| 1572 | return -1; |
| 1573 | } |
| 1574 | // Sanity don't send empty packets. |
| 1575 | if (rtcp_length == 0) |
| 1576 | { |
| 1577 | return -1; |
| 1578 | } |
pkasting@chromium.org | 4591fbd | 2014-11-20 22:28:14 +0000 | [diff] [blame] | 1579 | return SendToNetwork(rtcp_buffer, static_cast<size_t>(rtcp_length)); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1580 | } |
| 1581 | |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1582 | int RTCPSender::PrepareRTCP(const FeedbackState& feedback_state, |
| 1583 | uint32_t packetTypeFlags, |
| 1584 | int32_t nackSize, |
| 1585 | const uint16_t* nackList, |
| 1586 | bool repeat, |
| 1587 | uint64_t pictureID, |
| 1588 | uint8_t* rtcp_buffer, |
| 1589 | int buffer_size) { |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1590 | uint32_t rtcpPacketTypeFlags = packetTypeFlags; |
| 1591 | // Collect the received information. |
| 1592 | uint32_t NTPsec = 0; |
| 1593 | uint32_t NTPfrac = 0; |
| 1594 | uint32_t jitterTransmissionOffset = 0; |
| 1595 | int position = 0; |
| 1596 | |
| 1597 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 1598 | |
asapersson@webrtc.org | d08d389 | 2014-12-16 12:03:11 +0000 | [diff] [blame] | 1599 | if (packet_type_counter_.first_packet_time_ms == -1) { |
| 1600 | packet_type_counter_.first_packet_time_ms = _clock->TimeInMilliseconds(); |
| 1601 | } |
| 1602 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1603 | if(_TMMBR ) // Attach TMMBR to send and receive reports. |
| 1604 | { |
| 1605 | rtcpPacketTypeFlags |= kRtcpTmmbr; |
| 1606 | } |
| 1607 | if(_appSend) |
| 1608 | { |
| 1609 | rtcpPacketTypeFlags |= kRtcpApp; |
| 1610 | _appSend = false; |
| 1611 | } |
| 1612 | if(_REMB && _sendREMB) |
| 1613 | { |
| 1614 | // Always attach REMB to SR if that is configured. Note that REMB is |
| 1615 | // only sent on one of the RTP modules in the REMB group. |
| 1616 | rtcpPacketTypeFlags |= kRtcpRemb; |
| 1617 | } |
| 1618 | if(_xrSendVoIPMetric) |
| 1619 | { |
| 1620 | rtcpPacketTypeFlags |= kRtcpXrVoipMetric; |
| 1621 | _xrSendVoIPMetric = false; |
| 1622 | } |
| 1623 | if(_sendTMMBN) // Set when having received a TMMBR. |
| 1624 | { |
| 1625 | rtcpPacketTypeFlags |= kRtcpTmmbn; |
| 1626 | _sendTMMBN = false; |
| 1627 | } |
asapersson@webrtc.org | efaeda0 | 2014-01-20 08:34:49 +0000 | [diff] [blame] | 1628 | if (rtcpPacketTypeFlags & kRtcpReport) |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1629 | { |
asapersson@webrtc.org | efaeda0 | 2014-01-20 08:34:49 +0000 | [diff] [blame] | 1630 | if (xrSendReceiverReferenceTimeEnabled_ && !_sending) |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1631 | { |
| 1632 | rtcpPacketTypeFlags |= kRtcpXrReceiverReferenceTime; |
| 1633 | } |
| 1634 | if (feedback_state.has_last_xr_rr) |
| 1635 | { |
| 1636 | rtcpPacketTypeFlags |= kRtcpXrDlrrReportBlock; |
| 1637 | } |
| 1638 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1639 | if(_method == kRtcpCompound) |
| 1640 | { |
| 1641 | if(_sending) |
| 1642 | { |
| 1643 | rtcpPacketTypeFlags |= kRtcpSr; |
| 1644 | } else |
| 1645 | { |
| 1646 | rtcpPacketTypeFlags |= kRtcpRr; |
| 1647 | } |
| 1648 | } else if(_method == kRtcpNonCompound) |
| 1649 | { |
| 1650 | if(rtcpPacketTypeFlags & kRtcpReport) |
| 1651 | { |
| 1652 | if(_sending) |
| 1653 | { |
| 1654 | rtcpPacketTypeFlags |= kRtcpSr; |
| 1655 | } else |
| 1656 | { |
| 1657 | rtcpPacketTypeFlags |= kRtcpRr; |
| 1658 | } |
| 1659 | } |
| 1660 | } |
| 1661 | if( rtcpPacketTypeFlags & kRtcpRr || |
| 1662 | rtcpPacketTypeFlags & kRtcpSr) |
| 1663 | { |
| 1664 | // generate next time to send a RTCP report |
| 1665 | // seeded from RTP constructor |
| 1666 | int32_t random = rand() % 1000; |
| 1667 | int32_t timeToNext = RTCP_INTERVAL_AUDIO_MS; |
| 1668 | |
| 1669 | if(_audio) |
| 1670 | { |
| 1671 | timeToNext = (RTCP_INTERVAL_AUDIO_MS/2) + |
| 1672 | (RTCP_INTERVAL_AUDIO_MS*random/1000); |
| 1673 | }else |
| 1674 | { |
| 1675 | uint32_t minIntervalMs = RTCP_INTERVAL_AUDIO_MS; |
| 1676 | if(_sending) |
| 1677 | { |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1678 | // Calculate bandwidth for video; 360 / send bandwidth in kbit/s. |
| 1679 | uint32_t send_bitrate_kbit = feedback_state.send_bitrate / 1000; |
| 1680 | if (send_bitrate_kbit != 0) |
| 1681 | minIntervalMs = 360000 / send_bitrate_kbit; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1682 | } |
| 1683 | if(minIntervalMs > RTCP_INTERVAL_VIDEO_MS) |
| 1684 | { |
| 1685 | minIntervalMs = RTCP_INTERVAL_VIDEO_MS; |
| 1686 | } |
| 1687 | timeToNext = (minIntervalMs/2) + (minIntervalMs*random/1000); |
| 1688 | } |
| 1689 | _nextTimeToSendRTCP = _clock->TimeInMilliseconds() + timeToNext; |
| 1690 | } |
| 1691 | |
| 1692 | // If the data does not fit in the packet we fill it as much as possible. |
| 1693 | int32_t buildVal = 0; |
| 1694 | |
| 1695 | // We need to send our NTP even if we haven't received any reports. |
| 1696 | _clock->CurrentNtp(NTPsec, NTPfrac); |
| 1697 | if (ShouldSendReportBlocks(rtcpPacketTypeFlags)) { |
| 1698 | StatisticianMap statisticians = |
| 1699 | receive_statistics_->GetActiveStatisticians(); |
| 1700 | if (!statisticians.empty()) { |
| 1701 | StatisticianMap::const_iterator it; |
| 1702 | int i; |
| 1703 | for (it = statisticians.begin(), i = 0; it != statisticians.end(); |
| 1704 | ++it, ++i) { |
| 1705 | RTCPReportBlock report_block; |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1706 | if (PrepareReport( |
| 1707 | feedback_state, it->second, &report_block, &NTPsec, &NTPfrac)) |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1708 | AddReportBlock(it->first, &internal_report_blocks_, &report_block); |
| 1709 | } |
| 1710 | if (_IJ && !statisticians.empty()) { |
| 1711 | rtcpPacketTypeFlags |= kRtcpTransmissionTimeOffset; |
| 1712 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1713 | } |
| 1714 | } |
| 1715 | |
| 1716 | if(rtcpPacketTypeFlags & kRtcpSr) |
| 1717 | { |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1718 | buildVal = BuildSR(feedback_state, rtcp_buffer, position, NTPsec, NTPfrac); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1719 | if (buildVal == -1) { |
| 1720 | return -1; |
| 1721 | } else if (buildVal == -2) { |
| 1722 | return position; |
| 1723 | } |
| 1724 | buildVal = BuildSDEC(rtcp_buffer, position); |
| 1725 | if (buildVal == -1) { |
| 1726 | return -1; |
| 1727 | } else if (buildVal == -2) { |
| 1728 | return position; |
| 1729 | } |
| 1730 | }else if(rtcpPacketTypeFlags & kRtcpRr) |
| 1731 | { |
| 1732 | buildVal = BuildRR(rtcp_buffer, position, NTPsec, NTPfrac); |
| 1733 | if (buildVal == -1) { |
| 1734 | return -1; |
| 1735 | } else if (buildVal == -2) { |
| 1736 | return position; |
| 1737 | } |
| 1738 | // only of set |
| 1739 | if(_CNAME[0] != 0) |
| 1740 | { |
| 1741 | buildVal = BuildSDEC(rtcp_buffer, position); |
| 1742 | if (buildVal == -1) { |
| 1743 | return -1; |
| 1744 | } |
| 1745 | } |
| 1746 | } |
| 1747 | if(rtcpPacketTypeFlags & kRtcpTransmissionTimeOffset) |
| 1748 | { |
| 1749 | // If present, this RTCP packet must be placed after a |
| 1750 | // receiver report. |
| 1751 | buildVal = BuildExtendedJitterReport(rtcp_buffer, |
| 1752 | position, |
| 1753 | jitterTransmissionOffset); |
| 1754 | if (buildVal == -1) { |
| 1755 | return -1; |
| 1756 | } else if (buildVal == -2) { |
| 1757 | return position; |
| 1758 | } |
| 1759 | } |
| 1760 | if(rtcpPacketTypeFlags & kRtcpPli) |
| 1761 | { |
| 1762 | buildVal = BuildPLI(rtcp_buffer, position); |
| 1763 | if (buildVal == -1) { |
| 1764 | return -1; |
| 1765 | } else if (buildVal == -2) { |
| 1766 | return position; |
| 1767 | } |
| 1768 | TRACE_EVENT_INSTANT0("webrtc_rtp", "RTCPSender::PLI"); |
asapersson@webrtc.org | 8098e07 | 2014-02-19 11:59:02 +0000 | [diff] [blame] | 1769 | ++packet_type_counter_.pli_packets; |
| 1770 | TRACE_COUNTER_ID1("webrtc_rtp", "RTCP_PLICount", _SSRC, |
| 1771 | packet_type_counter_.pli_packets); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1772 | } |
| 1773 | if(rtcpPacketTypeFlags & kRtcpFir) |
| 1774 | { |
| 1775 | buildVal = BuildFIR(rtcp_buffer, position, repeat); |
| 1776 | if (buildVal == -1) { |
| 1777 | return -1; |
| 1778 | } else if (buildVal == -2) { |
| 1779 | return position; |
| 1780 | } |
| 1781 | TRACE_EVENT_INSTANT0("webrtc_rtp", "RTCPSender::FIR"); |
asapersson@webrtc.org | 8098e07 | 2014-02-19 11:59:02 +0000 | [diff] [blame] | 1782 | ++packet_type_counter_.fir_packets; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1783 | TRACE_COUNTER_ID1("webrtc_rtp", "RTCP_FIRCount", _SSRC, |
asapersson@webrtc.org | 8098e07 | 2014-02-19 11:59:02 +0000 | [diff] [blame] | 1784 | packet_type_counter_.fir_packets); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1785 | } |
| 1786 | if(rtcpPacketTypeFlags & kRtcpSli) |
| 1787 | { |
| 1788 | buildVal = BuildSLI(rtcp_buffer, position, (uint8_t)pictureID); |
| 1789 | if (buildVal == -1) { |
| 1790 | return -1; |
| 1791 | } else if (buildVal == -2) { |
| 1792 | return position; |
| 1793 | } |
| 1794 | } |
| 1795 | if(rtcpPacketTypeFlags & kRtcpRpsi) |
| 1796 | { |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1797 | const int8_t payloadType = feedback_state.send_payload_type; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1798 | if (payloadType == -1) { |
| 1799 | return -1; |
| 1800 | } |
| 1801 | buildVal = BuildRPSI(rtcp_buffer, position, pictureID, |
| 1802 | (uint8_t)payloadType); |
| 1803 | if (buildVal == -1) { |
| 1804 | return -1; |
| 1805 | } else if (buildVal == -2) { |
| 1806 | return position; |
| 1807 | } |
| 1808 | } |
| 1809 | if(rtcpPacketTypeFlags & kRtcpRemb) |
| 1810 | { |
| 1811 | buildVal = BuildREMB(rtcp_buffer, position); |
| 1812 | if (buildVal == -1) { |
| 1813 | return -1; |
| 1814 | } else if (buildVal == -2) { |
| 1815 | return position; |
| 1816 | } |
| 1817 | TRACE_EVENT_INSTANT0("webrtc_rtp", "RTCPSender::REMB"); |
| 1818 | } |
| 1819 | if(rtcpPacketTypeFlags & kRtcpBye) |
| 1820 | { |
| 1821 | buildVal = BuildBYE(rtcp_buffer, position); |
| 1822 | if (buildVal == -1) { |
| 1823 | return -1; |
| 1824 | } else if (buildVal == -2) { |
| 1825 | return position; |
| 1826 | } |
| 1827 | } |
| 1828 | if(rtcpPacketTypeFlags & kRtcpApp) |
| 1829 | { |
| 1830 | buildVal = BuildAPP(rtcp_buffer, position); |
| 1831 | if (buildVal == -1) { |
| 1832 | return -1; |
| 1833 | } else if (buildVal == -2) { |
| 1834 | return position; |
| 1835 | } |
| 1836 | } |
| 1837 | if(rtcpPacketTypeFlags & kRtcpTmmbr) |
| 1838 | { |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1839 | buildVal = BuildTMMBR(feedback_state.module, rtcp_buffer, position); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1840 | if (buildVal == -1) { |
| 1841 | return -1; |
| 1842 | } else if (buildVal == -2) { |
| 1843 | return position; |
| 1844 | } |
| 1845 | } |
| 1846 | if(rtcpPacketTypeFlags & kRtcpTmmbn) |
| 1847 | { |
| 1848 | buildVal = BuildTMMBN(rtcp_buffer, position); |
| 1849 | if (buildVal == -1) { |
| 1850 | return -1; |
| 1851 | } else if (buildVal == -2) { |
| 1852 | return position; |
| 1853 | } |
| 1854 | } |
| 1855 | if(rtcpPacketTypeFlags & kRtcpNack) |
| 1856 | { |
| 1857 | std::string nackString; |
| 1858 | buildVal = BuildNACK(rtcp_buffer, position, nackSize, nackList, |
| 1859 | &nackString); |
| 1860 | if (buildVal == -1) { |
| 1861 | return -1; |
| 1862 | } else if (buildVal == -2) { |
| 1863 | return position; |
| 1864 | } |
| 1865 | TRACE_EVENT_INSTANT1("webrtc_rtp", "RTCPSender::NACK", |
| 1866 | "nacks", TRACE_STR_COPY(nackString.c_str())); |
asapersson@webrtc.org | 8098e07 | 2014-02-19 11:59:02 +0000 | [diff] [blame] | 1867 | ++packet_type_counter_.nack_packets; |
| 1868 | TRACE_COUNTER_ID1("webrtc_rtp", "RTCP_NACKCount", _SSRC, |
| 1869 | packet_type_counter_.nack_packets); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1870 | } |
| 1871 | if(rtcpPacketTypeFlags & kRtcpXrVoipMetric) |
| 1872 | { |
| 1873 | buildVal = BuildVoIPMetric(rtcp_buffer, position); |
| 1874 | if (buildVal == -1) { |
| 1875 | return -1; |
| 1876 | } else if (buildVal == -2) { |
| 1877 | return position; |
| 1878 | } |
| 1879 | } |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 1880 | if (rtcpPacketTypeFlags & kRtcpXrReceiverReferenceTime) |
| 1881 | { |
| 1882 | buildVal = BuildReceiverReferenceTime(rtcp_buffer, |
| 1883 | position, |
| 1884 | NTPsec, |
| 1885 | NTPfrac); |
| 1886 | if (buildVal == -1) { |
| 1887 | return -1; |
| 1888 | } else if (buildVal == -2) { |
| 1889 | return position; |
| 1890 | } |
| 1891 | } |
| 1892 | if (rtcpPacketTypeFlags & kRtcpXrDlrrReportBlock) |
| 1893 | { |
| 1894 | buildVal = BuildDlrr(rtcp_buffer, position, feedback_state.last_xr_rr); |
| 1895 | if (buildVal == -1) { |
| 1896 | return -1; |
| 1897 | } else if (buildVal == -2) { |
| 1898 | return position; |
| 1899 | } |
| 1900 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1901 | return position; |
| 1902 | } |
| 1903 | |
| 1904 | bool RTCPSender::ShouldSendReportBlocks(uint32_t rtcp_packet_type) const { |
| 1905 | return Status() == kRtcpCompound || |
| 1906 | (rtcp_packet_type & kRtcpReport) || |
| 1907 | (rtcp_packet_type & kRtcpSr) || |
| 1908 | (rtcp_packet_type & kRtcpRr); |
| 1909 | } |
| 1910 | |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1911 | bool RTCPSender::PrepareReport(const FeedbackState& feedback_state, |
| 1912 | StreamStatistician* statistician, |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1913 | RTCPReportBlock* report_block, |
| 1914 | uint32_t* ntp_secs, uint32_t* ntp_frac) { |
| 1915 | // Do we have receive statistics to send? |
sprang@webrtc.org | 54ae4ff | 2013-12-19 13:26:02 +0000 | [diff] [blame] | 1916 | RtcpStatistics stats; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1917 | if (!statistician->GetStatistics(&stats, true)) |
| 1918 | return false; |
| 1919 | report_block->fractionLost = stats.fraction_lost; |
| 1920 | report_block->cumulativeLost = stats.cumulative_lost; |
| 1921 | report_block->extendedHighSeqNum = |
| 1922 | stats.extended_max_sequence_number; |
| 1923 | report_block->jitter = stats.jitter; |
| 1924 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1925 | // get our NTP as late as possible to avoid a race |
| 1926 | _clock->CurrentNtp(*ntp_secs, *ntp_frac); |
| 1927 | |
| 1928 | // Delay since last received report |
| 1929 | uint32_t delaySinceLastReceivedSR = 0; |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1930 | if ((feedback_state.last_rr_ntp_secs != 0) || |
| 1931 | (feedback_state.last_rr_ntp_frac != 0)) { |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1932 | // get the 16 lowest bits of seconds and the 16 higest bits of fractions |
| 1933 | uint32_t now=*ntp_secs&0x0000FFFF; |
| 1934 | now <<=16; |
| 1935 | now += (*ntp_frac&0xffff0000)>>16; |
| 1936 | |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1937 | uint32_t receiveTime = feedback_state.last_rr_ntp_secs&0x0000FFFF; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1938 | receiveTime <<=16; |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1939 | receiveTime += (feedback_state.last_rr_ntp_frac&0xffff0000)>>16; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1940 | |
| 1941 | delaySinceLastReceivedSR = now-receiveTime; |
| 1942 | } |
| 1943 | report_block->delaySinceLastSR = delaySinceLastReceivedSR; |
pbos@webrtc.org | 59f20bb | 2013-09-09 16:02:19 +0000 | [diff] [blame] | 1944 | report_block->lastSR = feedback_state.remote_sr; |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 1945 | return true; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1946 | } |
| 1947 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 1948 | int32_t RTCPSender::SendToNetwork(const uint8_t* dataBuffer, size_t length) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1949 | CriticalSectionScoped lock(_criticalSectionTransport); |
| 1950 | if(_cbTransport) |
| 1951 | { |
| 1952 | if(_cbTransport->SendRTCPPacket(_id, dataBuffer, length) > 0) |
| 1953 | { |
| 1954 | return 0; |
| 1955 | } |
| 1956 | } |
| 1957 | return -1; |
| 1958 | } |
| 1959 | |
pbos@webrtc.org | 9334ac2 | 2014-11-24 08:25:50 +0000 | [diff] [blame] | 1960 | void RTCPSender::SetCsrcs(const std::vector<uint32_t>& csrcs) { |
| 1961 | assert(csrcs.size() <= kRtpCsrcSize); |
| 1962 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 1963 | csrcs_ = csrcs; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1964 | } |
| 1965 | |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 1966 | int32_t RTCPSender::SetApplicationSpecificData(uint8_t subType, |
| 1967 | uint32_t name, |
| 1968 | const uint8_t* data, |
| 1969 | uint16_t length) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1970 | if(length %4 != 0) |
| 1971 | { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 1972 | LOG(LS_ERROR) << "Failed to SetApplicationSpecificData."; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1973 | return -1; |
| 1974 | } |
| 1975 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 1976 | |
| 1977 | if(_appData) |
| 1978 | { |
| 1979 | delete [] _appData; |
| 1980 | } |
| 1981 | |
| 1982 | _appSend = true; |
| 1983 | _appSubType = subType; |
| 1984 | _appName = name; |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1985 | _appData = new uint8_t[length]; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1986 | _appLength = length; |
| 1987 | memcpy(_appData, data, length); |
| 1988 | return 0; |
| 1989 | } |
| 1990 | |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 1991 | int32_t |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 1992 | RTCPSender::SetRTCPVoIPMetrics(const RTCPVoIPMetric* VoIPMetric) |
| 1993 | { |
| 1994 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 1995 | memcpy(&_xrVoIPMetric, VoIPMetric, sizeof(RTCPVoIPMetric)); |
| 1996 | |
| 1997 | _xrSendVoIPMetric = true; |
| 1998 | return 0; |
| 1999 | } |
| 2000 | |
asapersson@webrtc.org | 8469f7b | 2013-10-02 13:15:34 +0000 | [diff] [blame] | 2001 | void RTCPSender::SendRtcpXrReceiverReferenceTime(bool enable) { |
| 2002 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 2003 | xrSendReceiverReferenceTimeEnabled_ = enable; |
| 2004 | } |
| 2005 | |
asapersson@webrtc.org | 8d02f5d | 2013-11-21 08:57:04 +0000 | [diff] [blame] | 2006 | bool RTCPSender::RtcpXrReceiverReferenceTime() const { |
| 2007 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 2008 | return xrSendReceiverReferenceTimeEnabled_; |
| 2009 | } |
| 2010 | |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 2011 | // called under critsect _criticalSectionRTCPSender |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 2012 | int32_t RTCPSender::WriteAllReportBlocksToBuffer(uint8_t* rtcpbuffer, |
| 2013 | int pos, |
| 2014 | uint8_t& numberOfReportBlocks, |
| 2015 | uint32_t NTPsec, |
| 2016 | uint32_t NTPfrac) { |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2017 | numberOfReportBlocks = external_report_blocks_.size(); |
| 2018 | numberOfReportBlocks += internal_report_blocks_.size(); |
| 2019 | if ((pos + numberOfReportBlocks * 24) >= IP_PACKET_SIZE) { |
andresp@webrtc.org | dc80bae | 2014-04-08 11:06:12 +0000 | [diff] [blame] | 2020 | LOG(LS_WARNING) << "Can't fit all report blocks."; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2021 | return -1; |
| 2022 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2023 | pos = WriteReportBlocksToBuffer(rtcpbuffer, pos, internal_report_blocks_); |
| 2024 | while (!internal_report_blocks_.empty()) { |
| 2025 | delete internal_report_blocks_.begin()->second; |
| 2026 | internal_report_blocks_.erase(internal_report_blocks_.begin()); |
| 2027 | } |
| 2028 | pos = WriteReportBlocksToBuffer(rtcpbuffer, pos, external_report_blocks_); |
| 2029 | return pos; |
| 2030 | } |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2031 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2032 | int32_t RTCPSender::WriteReportBlocksToBuffer( |
| 2033 | uint8_t* rtcpbuffer, |
| 2034 | int32_t position, |
| 2035 | const std::map<uint32_t, RTCPReportBlock*>& report_blocks) { |
| 2036 | std::map<uint32_t, RTCPReportBlock*>::const_iterator it = |
| 2037 | report_blocks.begin(); |
| 2038 | for (; it != report_blocks.end(); it++) { |
pbos@webrtc.org | 2f44673 | 2013-04-08 11:08:41 +0000 | [diff] [blame] | 2039 | uint32_t remoteSSRC = it->first; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2040 | RTCPReportBlock* reportBlock = it->second; |
| 2041 | if (reportBlock) { |
| 2042 | // Remote SSRC |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 2043 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + position, remoteSSRC); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2044 | position += 4; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2045 | |
| 2046 | // fraction lost |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2047 | rtcpbuffer[position++] = reportBlock->fractionLost; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2048 | |
| 2049 | // cumulative loss |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 2050 | RtpUtility::AssignUWord24ToBuffer(rtcpbuffer + position, |
| 2051 | reportBlock->cumulativeLost); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2052 | position += 3; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2053 | |
| 2054 | // extended highest seq_no, contain the highest sequence number received |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 2055 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + position, |
| 2056 | reportBlock->extendedHighSeqNum); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2057 | position += 4; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2058 | |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2059 | // Jitter |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 2060 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + position, |
| 2061 | reportBlock->jitter); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2062 | position += 4; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2063 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 2064 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + position, |
| 2065 | reportBlock->lastSR); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2066 | position += 4; |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2067 | |
pbos@webrtc.org | 62bafae | 2014-07-08 12:10:51 +0000 | [diff] [blame] | 2068 | RtpUtility::AssignUWord32ToBuffer(rtcpbuffer + position, |
| 2069 | reportBlock->delaySinceLastSR); |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2070 | position += 4; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 2071 | } |
pwestin@webrtc.org | 26f8d9c | 2012-01-19 15:53:09 +0000 | [diff] [blame] | 2072 | } |
stefan@webrtc.org | 286fe0b | 2013-08-21 20:58:21 +0000 | [diff] [blame] | 2073 | return position; |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 2074 | } |
| 2075 | |
| 2076 | // no callbacks allowed inside this function |
pbos@webrtc.org | d16e839 | 2014-12-19 13:49:55 +0000 | [diff] [blame^] | 2077 | int32_t RTCPSender::SetTMMBN(const TMMBRSet* boundingSet, |
| 2078 | uint32_t maxBitrateKbit) { |
niklase@google.com | 470e71d | 2011-07-07 08:21:25 +0000 | [diff] [blame] | 2079 | CriticalSectionScoped lock(_criticalSectionRTCPSender); |
| 2080 | |
| 2081 | if (0 == _tmmbrHelp.SetTMMBRBoundingSetToSend(boundingSet, maxBitrateKbit)) |
| 2082 | { |
| 2083 | _sendTMMBN = true; |
| 2084 | return 0; |
| 2085 | } |
| 2086 | return -1; |
| 2087 | } |
pbos@webrtc.org | d900e8b | 2013-07-03 15:12:26 +0000 | [diff] [blame] | 2088 | } // namespace webrtc |