3 * Copyright 2012, Google Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include "talk/app/webrtc/statscollector.h"
33 #include "talk/base/base64.h"
34 #include "talk/base/scoped_ptr.h"
35 #include "talk/session/media/channel.h"
39 // The items below are in alphabetical order.
40 const char StatsReport::kStatsValueNameActiveConnection[] =
41 "googActiveConnection";
42 const char StatsReport::kStatsValueNameActualEncBitrate[] =
43 "googActualEncBitrate";
44 const char StatsReport::kStatsValueNameAudioOutputLevel[] = "audioOutputLevel";
45 const char StatsReport::kStatsValueNameAudioInputLevel[] = "audioInputLevel";
46 const char StatsReport::kStatsValueNameAvailableReceiveBandwidth[] =
47 "googAvailableReceiveBandwidth";
48 const char StatsReport::kStatsValueNameAvailableSendBandwidth[] =
49 "googAvailableSendBandwidth";
50 const char StatsReport::kStatsValueNameAvgEncodeMs[] = "googAvgEncodeMs";
51 const char StatsReport::kStatsValueNameBucketDelay[] = "googBucketDelay";
52 const char StatsReport::kStatsValueNameBytesReceived[] = "bytesReceived";
53 const char StatsReport::kStatsValueNameBytesSent[] = "bytesSent";
54 const char StatsReport::kStatsValueNameBandwidthLimitedResolution[] =
55 "googBandwidthLimitedResolution";
56 const char StatsReport::kStatsValueNameCaptureJitterMs[] =
57 "googCaptureJitterMs";
58 const char StatsReport::kStatsValueNameCaptureQueueDelayMsPerS[] =
59 "googCaptureQueueDelayMsPerS";
60 const char StatsReport::kStatsValueNameChannelId[] = "googChannelId";
61 const char StatsReport::kStatsValueNameCodecName[] = "googCodecName";
62 const char StatsReport::kStatsValueNameComponent[] = "googComponent";
63 const char StatsReport::kStatsValueNameContentName[] = "googContentName";
64 const char StatsReport::kStatsValueNameCpuLimitedResolution[] =
65 "googCpuLimitedResolution";
66 const char StatsReport::kStatsValueNameDer[] = "googDerBase64";
67 // Echo metrics from the audio processing module.
68 const char StatsReport::kStatsValueNameEchoCancellationQualityMin[] =
69 "googEchoCancellationQualityMin";
70 const char StatsReport::kStatsValueNameEchoDelayMedian[] =
71 "googEchoCancellationEchoDelayMedian";
72 const char StatsReport::kStatsValueNameEchoDelayStdDev[] =
73 "googEchoCancellationEchoDelayStdDev";
74 const char StatsReport::kStatsValueNameEchoReturnLoss[] =
75 "googEchoCancellationReturnLoss";
76 const char StatsReport::kStatsValueNameEchoReturnLossEnhancement[] =
77 "googEchoCancellationReturnLossEnhancement";
79 const char StatsReport::kStatsValueNameEncodeUsagePercent[] =
80 "googEncodeUsagePercent";
81 const char StatsReport::kStatsValueNameExpandRate[] = "googExpandRate";
82 const char StatsReport::kStatsValueNameFingerprint[] = "googFingerprint";
83 const char StatsReport::kStatsValueNameFingerprintAlgorithm[] =
84 "googFingerprintAlgorithm";
85 const char StatsReport::kStatsValueNameFirsReceived[] = "googFirsReceived";
86 const char StatsReport::kStatsValueNameFirsSent[] = "googFirsSent";
87 const char StatsReport::kStatsValueNameFrameHeightInput[] =
88 "googFrameHeightInput";
89 const char StatsReport::kStatsValueNameFrameHeightReceived[] =
90 "googFrameHeightReceived";
91 const char StatsReport::kStatsValueNameFrameHeightSent[] =
92 "googFrameHeightSent";
93 const char StatsReport::kStatsValueNameFrameRateReceived[] =
94 "googFrameRateReceived";
95 const char StatsReport::kStatsValueNameFrameRateDecoded[] =
96 "googFrameRateDecoded";
97 const char StatsReport::kStatsValueNameFrameRateOutput[] =
98 "googFrameRateOutput";
99 const char StatsReport::kStatsValueNameDecodeMs[] = "googDecodeMs";
100 const char StatsReport::kStatsValueNameMaxDecodeMs[] = "googMaxDecodeMs";
101 const char StatsReport::kStatsValueNameCurrentDelayMs[] = "googCurrentDelayMs";
102 const char StatsReport::kStatsValueNameTargetDelayMs[] = "googTargetDelayMs";
103 const char StatsReport::kStatsValueNameJitterBufferMs[] = "googJitterBufferMs";
104 const char StatsReport::kStatsValueNameMinPlayoutDelayMs[] =
105 "googMinPlayoutDelayMs";
106 const char StatsReport::kStatsValueNameRenderDelayMs[] = "googRenderDelayMs";
108 const char StatsReport::kStatsValueNameCaptureStartNtpTimeMs[] =
109 "googCaptureStartNtpTimeMs";
111 const char StatsReport::kStatsValueNameFrameRateInput[] = "googFrameRateInput";
112 const char StatsReport::kStatsValueNameFrameRateSent[] = "googFrameRateSent";
113 const char StatsReport::kStatsValueNameFrameWidthInput[] =
114 "googFrameWidthInput";
115 const char StatsReport::kStatsValueNameFrameWidthReceived[] =
116 "googFrameWidthReceived";
117 const char StatsReport::kStatsValueNameFrameWidthSent[] = "googFrameWidthSent";
118 const char StatsReport::kStatsValueNameInitiator[] = "googInitiator";
119 const char StatsReport::kStatsValueNameIssuerId[] = "googIssuerId";
120 const char StatsReport::kStatsValueNameJitterReceived[] = "googJitterReceived";
121 const char StatsReport::kStatsValueNameLocalAddress[] = "googLocalAddress";
122 const char StatsReport::kStatsValueNameLocalCandidateType[] =
123 "googLocalCandidateType";
124 const char StatsReport::kStatsValueNameLocalCertificateId[] =
125 "googLocalCertificateId";
126 const char StatsReport::kStatsValueNameNacksReceived[] = "googNacksReceived";
127 const char StatsReport::kStatsValueNameNacksSent[] = "googNacksSent";
128 const char StatsReport::kStatsValueNamePlisReceived[] = "googPlisReceived";
129 const char StatsReport::kStatsValueNamePlisSent[] = "googPlisSent";
130 const char StatsReport::kStatsValueNamePacketsReceived[] = "packetsReceived";
131 const char StatsReport::kStatsValueNamePacketsSent[] = "packetsSent";
132 const char StatsReport::kStatsValueNamePacketsLost[] = "packetsLost";
133 const char StatsReport::kStatsValueNamePreferredJitterBufferMs[] =
134 "googPreferredJitterBufferMs";
135 const char StatsReport::kStatsValueNameReadable[] = "googReadable";
136 const char StatsReport::kStatsValueNameRecvPacketGroupArrivalTimeDebug[] =
137 "googReceivedPacketGroupArrivalTimeDebug";
138 const char StatsReport::kStatsValueNameRecvPacketGroupPropagationDeltaDebug[] =
139 "googReceivedPacketGroupPropagationDeltaDebug";
141 StatsReport::kStatsValueNameRecvPacketGroupPropagationDeltaSumDebug[] =
142 "googReceivedPacketGroupPropagationDeltaSumDebug";
143 const char StatsReport::kStatsValueNameRemoteAddress[] = "googRemoteAddress";
144 const char StatsReport::kStatsValueNameRemoteCandidateType[] =
145 "googRemoteCandidateType";
146 const char StatsReport::kStatsValueNameRemoteCertificateId[] =
147 "googRemoteCertificateId";
148 const char StatsReport::kStatsValueNameRetransmitBitrate[] =
149 "googRetransmitBitrate";
150 const char StatsReport::kStatsValueNameRtt[] = "googRtt";
151 const char StatsReport::kStatsValueNameSsrc[] = "ssrc";
152 const char StatsReport::kStatsValueNameTargetEncBitrate[] =
153 "googTargetEncBitrate";
154 const char StatsReport::kStatsValueNameTransmitBitrate[] =
155 "googTransmitBitrate";
156 const char StatsReport::kStatsValueNameTransportId[] = "transportId";
157 const char StatsReport::kStatsValueNameTransportType[] = "googTransportType";
158 const char StatsReport::kStatsValueNameTrackId[] = "googTrackId";
159 const char StatsReport::kStatsValueNameTypingNoiseState[] =
160 "googTypingNoiseState";
161 const char StatsReport::kStatsValueNameViewLimitedResolution[] =
162 "googViewLimitedResolution";
163 const char StatsReport::kStatsValueNameWritable[] = "googWritable";
165 const char StatsReport::kStatsReportTypeSession[] = "googLibjingleSession";
166 const char StatsReport::kStatsReportTypeBwe[] = "VideoBwe";
167 const char StatsReport::kStatsReportTypeRemoteSsrc[] = "remoteSsrc";
168 const char StatsReport::kStatsReportTypeSsrc[] = "ssrc";
169 const char StatsReport::kStatsReportTypeTrack[] = "googTrack";
170 const char StatsReport::kStatsReportTypeIceCandidate[] = "iceCandidate";
171 const char StatsReport::kStatsReportTypeTransport[] = "googTransport";
172 const char StatsReport::kStatsReportTypeComponent[] = "googComponent";
173 const char StatsReport::kStatsReportTypeCandidatePair[] = "googCandidatePair";
174 const char StatsReport::kStatsReportTypeCertificate[] = "googCertificate";
176 const char StatsReport::kStatsReportVideoBweId[] = "bweforvideo";
179 // Implementations of functions in statstypes.h
180 void StatsReport::AddValue(const std::string& name, const std::string& value) {
184 values.push_back(temp);
187 void StatsReport::AddValue(const std::string& name, int64 value) {
188 AddValue(name, talk_base::ToString<int64>(value));
191 template <typename T>
192 void StatsReport::AddValue(const std::string& name,
193 const std::vector<T>& value) {
194 std::ostringstream oss;
196 for (size_t i = 0; i < value.size(); ++i) {
197 oss << talk_base::ToString<T>(value[i]);
198 if (i != value.size() - 1)
202 AddValue(name, oss.str());
205 void StatsReport::AddBoolean(const std::string& name, bool value) {
206 AddValue(name, value ? "true" : "false");
209 void StatsReport::ReplaceValue(const std::string& name,
210 const std::string& value) {
211 for (Values::iterator it = values.begin(); it != values.end(); ++it) {
212 if ((*it).name == name) {
217 // It is not reachable here, add an ASSERT to make sure the overwriting is
223 typedef std::map<std::string, StatsReport> StatsMap;
225 std::string StatsId(const std::string& type, const std::string& id) {
226 return type + "_" + id;
229 bool ExtractValueFromReport(
230 const StatsReport& report,
231 const std::string& name,
232 std::string* value) {
233 StatsReport::Values::const_iterator it = report.values.begin();
234 for (; it != report.values.end(); ++it) {
235 if (it->name == name) {
243 template <class TrackVector>
244 void CreateTrackReports(const TrackVector& tracks, StatsMap* reports) {
245 for (size_t j = 0; j < tracks.size(); ++j) {
246 webrtc::MediaStreamTrackInterface* track = tracks[j];
247 // Adds an empty track report.
249 report.type = StatsReport::kStatsReportTypeTrack;
250 report.id = StatsId(StatsReport::kStatsReportTypeTrack, track->id());
251 report.AddValue(StatsReport::kStatsValueNameTrackId,
253 (*reports)[report.id] = report;
257 void ExtractStats(const cricket::VoiceReceiverInfo& info, StatsReport* report) {
258 report->AddValue(StatsReport::kStatsValueNameAudioOutputLevel,
260 report->AddValue(StatsReport::kStatsValueNameBytesReceived,
262 report->AddValue(StatsReport::kStatsValueNameJitterReceived,
264 report->AddValue(StatsReport::kStatsValueNameJitterBufferMs,
265 info.jitter_buffer_ms);
266 report->AddValue(StatsReport::kStatsValueNamePreferredJitterBufferMs,
267 info.jitter_buffer_preferred_ms);
268 report->AddValue(StatsReport::kStatsValueNameCurrentDelayMs,
269 info.delay_estimate_ms);
270 report->AddValue(StatsReport::kStatsValueNameExpandRate,
271 talk_base::ToString<float>(info.expand_rate));
272 report->AddValue(StatsReport::kStatsValueNamePacketsReceived,
274 report->AddValue(StatsReport::kStatsValueNamePacketsLost,
278 void ExtractStats(const cricket::VoiceSenderInfo& info, StatsReport* report) {
279 report->AddValue(StatsReport::kStatsValueNameAudioInputLevel,
281 report->AddValue(StatsReport::kStatsValueNameBytesSent,
283 report->AddValue(StatsReport::kStatsValueNamePacketsSent,
285 report->AddValue(StatsReport::kStatsValueNamePacketsLost,
287 report->AddValue(StatsReport::kStatsValueNameJitterReceived,
289 report->AddValue(StatsReport::kStatsValueNameRtt, info.rtt_ms);
290 report->AddValue(StatsReport::kStatsValueNameEchoCancellationQualityMin,
291 talk_base::ToString<float>(info.aec_quality_min));
292 report->AddValue(StatsReport::kStatsValueNameEchoDelayMedian,
293 info.echo_delay_median_ms);
294 report->AddValue(StatsReport::kStatsValueNameEchoDelayStdDev,
295 info.echo_delay_std_ms);
296 report->AddValue(StatsReport::kStatsValueNameEchoReturnLoss,
297 info.echo_return_loss);
298 report->AddValue(StatsReport::kStatsValueNameEchoReturnLossEnhancement,
299 info.echo_return_loss_enhancement);
300 report->AddValue(StatsReport::kStatsValueNameCodecName, info.codec_name);
301 report->AddBoolean(StatsReport::kStatsValueNameTypingNoiseState,
302 info.typing_noise_detected);
305 void ExtractStats(const cricket::VideoReceiverInfo& info, StatsReport* report) {
306 report->AddValue(StatsReport::kStatsValueNameBytesReceived,
308 report->AddValue(StatsReport::kStatsValueNamePacketsReceived,
310 report->AddValue(StatsReport::kStatsValueNamePacketsLost,
313 report->AddValue(StatsReport::kStatsValueNameFirsSent,
315 report->AddValue(StatsReport::kStatsValueNamePlisSent,
317 report->AddValue(StatsReport::kStatsValueNameNacksSent,
319 report->AddValue(StatsReport::kStatsValueNameFrameWidthReceived,
321 report->AddValue(StatsReport::kStatsValueNameFrameHeightReceived,
323 report->AddValue(StatsReport::kStatsValueNameFrameRateReceived,
324 info.framerate_rcvd);
325 report->AddValue(StatsReport::kStatsValueNameFrameRateDecoded,
326 info.framerate_decoded);
327 report->AddValue(StatsReport::kStatsValueNameFrameRateOutput,
328 info.framerate_output);
330 report->AddValue(StatsReport::kStatsValueNameDecodeMs,
332 report->AddValue(StatsReport::kStatsValueNameMaxDecodeMs,
334 report->AddValue(StatsReport::kStatsValueNameCurrentDelayMs,
335 info.current_delay_ms);
336 report->AddValue(StatsReport::kStatsValueNameTargetDelayMs,
337 info.target_delay_ms);
338 report->AddValue(StatsReport::kStatsValueNameJitterBufferMs,
339 info.jitter_buffer_ms);
340 report->AddValue(StatsReport::kStatsValueNameMinPlayoutDelayMs,
341 info.min_playout_delay_ms);
342 report->AddValue(StatsReport::kStatsValueNameRenderDelayMs,
343 info.render_delay_ms);
345 report->AddValue(StatsReport::kStatsValueNameCaptureStartNtpTimeMs,
346 info.capture_start_ntp_time_ms);
349 void ExtractStats(const cricket::VideoSenderInfo& info, StatsReport* report) {
350 report->AddValue(StatsReport::kStatsValueNameBytesSent,
352 report->AddValue(StatsReport::kStatsValueNamePacketsSent,
354 report->AddValue(StatsReport::kStatsValueNamePacketsLost,
357 report->AddValue(StatsReport::kStatsValueNameFirsReceived,
359 report->AddValue(StatsReport::kStatsValueNamePlisReceived,
361 report->AddValue(StatsReport::kStatsValueNameNacksReceived,
363 report->AddValue(StatsReport::kStatsValueNameFrameWidthInput,
364 info.input_frame_width);
365 report->AddValue(StatsReport::kStatsValueNameFrameHeightInput,
366 info.input_frame_height);
367 report->AddValue(StatsReport::kStatsValueNameFrameWidthSent,
368 info.send_frame_width);
369 report->AddValue(StatsReport::kStatsValueNameFrameHeightSent,
370 info.send_frame_height);
371 report->AddValue(StatsReport::kStatsValueNameFrameRateInput,
372 info.framerate_input);
373 report->AddValue(StatsReport::kStatsValueNameFrameRateSent,
374 info.framerate_sent);
375 report->AddValue(StatsReport::kStatsValueNameRtt, info.rtt_ms);
376 report->AddValue(StatsReport::kStatsValueNameCodecName, info.codec_name);
377 report->AddBoolean(StatsReport::kStatsValueNameCpuLimitedResolution,
378 (info.adapt_reason & 0x1) > 0);
379 report->AddBoolean(StatsReport::kStatsValueNameBandwidthLimitedResolution,
380 (info.adapt_reason & 0x2) > 0);
381 report->AddBoolean(StatsReport::kStatsValueNameViewLimitedResolution,
382 (info.adapt_reason & 0x4) > 0);
383 report->AddValue(StatsReport::kStatsValueNameAvgEncodeMs, info.avg_encode_ms);
384 report->AddValue(StatsReport::kStatsValueNameCaptureJitterMs,
385 info.capture_jitter_ms);
386 report->AddValue(StatsReport::kStatsValueNameCaptureQueueDelayMsPerS,
387 info.capture_queue_delay_ms_per_s);
388 report->AddValue(StatsReport::kStatsValueNameEncodeUsagePercent,
389 info.encode_usage_percent);
392 void ExtractStats(const cricket::BandwidthEstimationInfo& info,
393 double stats_gathering_started,
394 PeerConnectionInterface::StatsOutputLevel level,
395 StatsReport* report) {
396 report->id = StatsReport::kStatsReportVideoBweId;
397 report->type = StatsReport::kStatsReportTypeBwe;
399 // Clear out stats from previous GatherStats calls if any.
400 if (report->timestamp != stats_gathering_started) {
401 report->values.clear();
402 report->timestamp = stats_gathering_started;
405 report->AddValue(StatsReport::kStatsValueNameAvailableSendBandwidth,
406 info.available_send_bandwidth);
407 report->AddValue(StatsReport::kStatsValueNameAvailableReceiveBandwidth,
408 info.available_recv_bandwidth);
409 report->AddValue(StatsReport::kStatsValueNameTargetEncBitrate,
410 info.target_enc_bitrate);
411 report->AddValue(StatsReport::kStatsValueNameActualEncBitrate,
412 info.actual_enc_bitrate);
413 report->AddValue(StatsReport::kStatsValueNameRetransmitBitrate,
414 info.retransmit_bitrate);
415 report->AddValue(StatsReport::kStatsValueNameTransmitBitrate,
416 info.transmit_bitrate);
417 report->AddValue(StatsReport::kStatsValueNameBucketDelay,
419 if (level >= PeerConnectionInterface::kStatsOutputLevelDebug) {
421 StatsReport::kStatsValueNameRecvPacketGroupPropagationDeltaSumDebug,
422 info.total_received_propagation_delta_ms);
423 if (info.recent_received_propagation_delta_ms.size() > 0) {
425 StatsReport::kStatsValueNameRecvPacketGroupPropagationDeltaDebug,
426 info.recent_received_propagation_delta_ms);
428 StatsReport::kStatsValueNameRecvPacketGroupArrivalTimeDebug,
429 info.recent_received_packet_group_arrival_time_ms);
434 void ExtractRemoteStats(const cricket::MediaSenderInfo& info,
435 StatsReport* report) {
436 report->timestamp = info.remote_stats[0].timestamp;
437 // TODO(hta): Extract some stats here.
440 void ExtractRemoteStats(const cricket::MediaReceiverInfo& info,
441 StatsReport* report) {
442 report->timestamp = info.remote_stats[0].timestamp;
443 // TODO(hta): Extract some stats here.
446 // Template to extract stats from a data vector.
447 // In order to use the template, the functions that are called from it,
448 // ExtractStats and ExtractRemoteStats, must be defined and overloaded
451 void ExtractStatsFromList(const std::vector<T>& data,
452 const std::string& transport_id,
453 StatsCollector* collector) {
454 typename std::vector<T>::const_iterator it = data.begin();
455 for (; it != data.end(); ++it) {
457 uint32 ssrc = it->ssrc();
458 // Each object can result in 2 objects, a local and a remote object.
459 // TODO(hta): Handle the case of multiple SSRCs per object.
460 StatsReport* report = collector->PrepareLocalReport(ssrc, transport_id);
464 ExtractStats(*it, report);
465 if (it->remote_stats.size() > 0) {
466 report = collector->PrepareRemoteReport(ssrc, transport_id);
470 ExtractRemoteStats(*it, report);
477 StatsCollector::StatsCollector()
478 : session_(NULL), stats_gathering_started_(0) {
481 // Adds a MediaStream with tracks that can be used as a |selector| in a call
483 void StatsCollector::AddStream(MediaStreamInterface* stream) {
484 ASSERT(stream != NULL);
486 CreateTrackReports<AudioTrackVector>(stream->GetAudioTracks(),
488 CreateTrackReports<VideoTrackVector>(stream->GetVideoTracks(),
492 void StatsCollector::AddLocalAudioTrack(AudioTrackInterface* audio_track,
494 ASSERT(audio_track != NULL);
496 for (LocalAudioTrackVector::iterator it = local_audio_tracks_.begin();
497 it != local_audio_tracks_.end(); ++it) {
498 ASSERT(it->first != audio_track || it->second != ssrc);
501 local_audio_tracks_.push_back(std::make_pair(audio_track, ssrc));
504 void StatsCollector::RemoveLocalAudioTrack(AudioTrackInterface* audio_track,
506 ASSERT(audio_track != NULL);
507 for (LocalAudioTrackVector::iterator it = local_audio_tracks_.begin();
508 it != local_audio_tracks_.end(); ++it) {
509 if (it->first == audio_track && it->second == ssrc) {
510 local_audio_tracks_.erase(it);
518 bool StatsCollector::GetStats(MediaStreamTrackInterface* track,
519 StatsReports* reports) {
520 ASSERT(reports != NULL);
523 StatsMap::iterator it;
525 for (it = reports_.begin(); it != reports_.end(); ++it) {
526 reports->push_back(it->second);
531 it = reports_.find(StatsId(StatsReport::kStatsReportTypeSession,
533 if (it != reports_.end()) {
534 reports->push_back(it->second);
537 it = reports_.find(StatsId(StatsReport::kStatsReportTypeTrack, track->id()));
539 if (it == reports_.end()) {
540 LOG(LS_WARNING) << "No StatsReport is available for "<< track->id();
544 reports->push_back(it->second);
546 std::string track_id;
547 for (it = reports_.begin(); it != reports_.end(); ++it) {
548 if (it->second.type != StatsReport::kStatsReportTypeSsrc) {
551 if (ExtractValueFromReport(it->second,
552 StatsReport::kStatsValueNameTrackId,
554 if (track_id == track->id()) {
555 reports->push_back(it->second);
564 StatsCollector::UpdateStats(PeerConnectionInterface::StatsOutputLevel level) {
565 double time_now = GetTimeNow();
566 // Calls to UpdateStats() that occur less than kMinGatherStatsPeriod number of
567 // ms apart will be ignored.
568 const double kMinGatherStatsPeriod = 50;
569 if (stats_gathering_started_ + kMinGatherStatsPeriod > time_now) {
572 stats_gathering_started_ = time_now;
575 ExtractSessionInfo();
577 ExtractVideoInfo(level);
581 StatsReport* StatsCollector::PrepareLocalReport(
583 const std::string& transport_id) {
584 std::string ssrc_id = talk_base::ToString<uint32>(ssrc);
585 StatsMap::iterator it = reports_.find(StatsId(
586 StatsReport::kStatsReportTypeSsrc, ssrc_id));
588 std::string track_id;
589 if (it == reports_.end()) {
590 if (!session()->GetTrackIdBySsrc(ssrc, &track_id)) {
591 LOG(LS_WARNING) << "The SSRC " << ssrc
592 << " is not associated with a track";
596 // Keeps the old track id since we want to report the stats for inactive
598 ExtractValueFromReport(it->second,
599 StatsReport::kStatsValueNameTrackId,
603 StatsReport* report = GetOrCreateReport(StatsReport::kStatsReportTypeSsrc,
606 // Clear out stats from previous GatherStats calls if any.
607 if (report->timestamp != stats_gathering_started_) {
608 report->values.clear();
609 report->timestamp = stats_gathering_started_;
612 report->AddValue(StatsReport::kStatsValueNameSsrc, ssrc_id);
613 report->AddValue(StatsReport::kStatsValueNameTrackId, track_id);
614 // Add the mapping of SSRC to transport.
615 report->AddValue(StatsReport::kStatsValueNameTransportId,
620 StatsReport* StatsCollector::PrepareRemoteReport(
622 const std::string& transport_id) {
623 std::string ssrc_id = talk_base::ToString<uint32>(ssrc);
624 StatsMap::iterator it = reports_.find(StatsId(
625 StatsReport::kStatsReportTypeRemoteSsrc, ssrc_id));
627 std::string track_id;
628 if (it == reports_.end()) {
629 if (!session()->GetTrackIdBySsrc(ssrc, &track_id)) {
630 LOG(LS_WARNING) << "The SSRC " << ssrc
631 << " is not associated with a track";
635 // Keeps the old track id since we want to report the stats for inactive
637 ExtractValueFromReport(it->second,
638 StatsReport::kStatsValueNameTrackId,
642 StatsReport* report = GetOrCreateReport(
643 StatsReport::kStatsReportTypeRemoteSsrc, ssrc_id);
645 // Clear out stats from previous GatherStats calls if any.
646 // The timestamp will be added later. Zero it for debugging.
647 report->values.clear();
648 report->timestamp = 0;
650 report->AddValue(StatsReport::kStatsValueNameSsrc, ssrc_id);
651 report->AddValue(StatsReport::kStatsValueNameTrackId, track_id);
652 // Add the mapping of SSRC to transport.
653 report->AddValue(StatsReport::kStatsValueNameTransportId,
658 std::string StatsCollector::AddOneCertificateReport(
659 const talk_base::SSLCertificate* cert, const std::string& issuer_id) {
660 // TODO(bemasc): Move this computation to a helper class that caches these
661 // values to reduce CPU use in GetStats. This will require adding a fast
662 // SSLCertificate::Equals() method to detect certificate changes.
664 std::string digest_algorithm;
665 if (!cert->GetSignatureDigestAlgorithm(&digest_algorithm))
666 return std::string();
668 talk_base::scoped_ptr<talk_base::SSLFingerprint> ssl_fingerprint(
669 talk_base::SSLFingerprint::Create(digest_algorithm, cert));
671 // SSLFingerprint::Create can fail if the algorithm returned by
672 // SSLCertificate::GetSignatureDigestAlgorithm is not supported by the
673 // implementation of SSLCertificate::ComputeDigest. This currently happens
674 // with MD5- and SHA-224-signed certificates when linked to libNSS.
675 if (!ssl_fingerprint)
676 return std::string();
678 std::string fingerprint = ssl_fingerprint->GetRfc4572Fingerprint();
680 talk_base::Buffer der_buffer;
681 cert->ToDER(&der_buffer);
682 std::string der_base64;
683 talk_base::Base64::EncodeFromArray(
684 der_buffer.data(), der_buffer.length(), &der_base64);
687 report.type = StatsReport::kStatsReportTypeCertificate;
688 report.id = StatsId(report.type, fingerprint);
689 report.timestamp = stats_gathering_started_;
690 report.AddValue(StatsReport::kStatsValueNameFingerprint, fingerprint);
691 report.AddValue(StatsReport::kStatsValueNameFingerprintAlgorithm,
693 report.AddValue(StatsReport::kStatsValueNameDer, der_base64);
694 if (!issuer_id.empty())
695 report.AddValue(StatsReport::kStatsValueNameIssuerId, issuer_id);
696 reports_[report.id] = report;
700 std::string StatsCollector::AddCertificateReports(
701 const talk_base::SSLCertificate* cert) {
702 // Produces a chain of StatsReports representing this certificate and the rest
703 // of its chain, and adds those reports to |reports_|. The return value is
704 // the id of the leaf report. The provided cert must be non-null, so at least
705 // one report will always be provided and the returned string will never be
707 ASSERT(cert != NULL);
709 std::string issuer_id;
710 talk_base::scoped_ptr<talk_base::SSLCertChain> chain;
711 if (cert->GetChain(chain.accept())) {
712 // This loop runs in reverse, i.e. from root to leaf, so that each
713 // certificate's issuer's report ID is known before the child certificate's
714 // report is generated. The root certificate does not have an issuer ID
716 for (ptrdiff_t i = chain->GetSize() - 1; i >= 0; --i) {
717 const talk_base::SSLCertificate& cert_i = chain->Get(i);
718 issuer_id = AddOneCertificateReport(&cert_i, issuer_id);
721 // Add the leaf certificate.
722 return AddOneCertificateReport(cert, issuer_id);
725 void StatsCollector::ExtractSessionInfo() {
726 // Extract information from the base session.
728 report.id = StatsId(StatsReport::kStatsReportTypeSession, session_->id());
729 report.type = StatsReport::kStatsReportTypeSession;
730 report.timestamp = stats_gathering_started_;
731 report.values.clear();
732 report.AddBoolean(StatsReport::kStatsValueNameInitiator,
733 session_->initiator());
735 reports_[report.id] = report;
737 cricket::SessionStats stats;
738 if (session_->GetStats(&stats)) {
739 // Store the proxy map away for use in SSRC reporting.
740 proxy_to_transport_ = stats.proxy_to_transport;
742 for (cricket::TransportStatsMap::iterator transport_iter
743 = stats.transport_stats.begin();
744 transport_iter != stats.transport_stats.end(); ++transport_iter) {
745 // Attempt to get a copy of the certificates from the transport and
746 // expose them in stats reports. All channels in a transport share the
747 // same local and remote certificates.
748 std::string local_cert_report_id, remote_cert_report_id;
749 cricket::Transport* transport =
750 session_->GetTransport(transport_iter->second.content_name);
752 talk_base::scoped_ptr<talk_base::SSLIdentity> identity;
753 if (transport->GetIdentity(identity.accept()))
754 local_cert_report_id = AddCertificateReports(
755 &(identity->certificate()));
757 talk_base::scoped_ptr<talk_base::SSLCertificate> cert;
758 if (transport->GetRemoteCertificate(cert.accept()))
759 remote_cert_report_id = AddCertificateReports(cert.get());
761 for (cricket::TransportChannelStatsList::iterator channel_iter
762 = transport_iter->second.channel_stats.begin();
763 channel_iter != transport_iter->second.channel_stats.end();
765 StatsReport channel_report;
766 std::ostringstream ostc;
767 ostc << "Channel-" << transport_iter->second.content_name
768 << "-" << channel_iter->component;
769 channel_report.id = ostc.str();
770 channel_report.type = StatsReport::kStatsReportTypeComponent;
771 channel_report.timestamp = stats_gathering_started_;
772 channel_report.AddValue(StatsReport::kStatsValueNameComponent,
773 channel_iter->component);
774 if (!local_cert_report_id.empty())
775 channel_report.AddValue(
776 StatsReport::kStatsValueNameLocalCertificateId,
777 local_cert_report_id);
778 if (!remote_cert_report_id.empty())
779 channel_report.AddValue(
780 StatsReport::kStatsValueNameRemoteCertificateId,
781 remote_cert_report_id);
782 reports_[channel_report.id] = channel_report;
784 i < channel_iter->connection_infos.size();
787 const cricket::ConnectionInfo& info
788 = channel_iter->connection_infos[i];
789 std::ostringstream ost;
790 ost << "Conn-" << transport_iter->first << "-"
791 << channel_iter->component << "-" << i;
792 report.id = ost.str();
793 report.type = StatsReport::kStatsReportTypeCandidatePair;
794 report.timestamp = stats_gathering_started_;
795 // Link from connection to its containing channel.
796 report.AddValue(StatsReport::kStatsValueNameChannelId,
798 report.AddValue(StatsReport::kStatsValueNameBytesSent,
799 info.sent_total_bytes);
800 report.AddValue(StatsReport::kStatsValueNameBytesReceived,
801 info.recv_total_bytes);
802 report.AddBoolean(StatsReport::kStatsValueNameWritable,
804 report.AddBoolean(StatsReport::kStatsValueNameReadable,
806 report.AddBoolean(StatsReport::kStatsValueNameActiveConnection,
807 info.best_connection);
808 report.AddValue(StatsReport::kStatsValueNameLocalAddress,
809 info.local_candidate.address().ToString());
810 report.AddValue(StatsReport::kStatsValueNameRemoteAddress,
811 info.remote_candidate.address().ToString());
812 report.AddValue(StatsReport::kStatsValueNameRtt, info.rtt);
813 report.AddValue(StatsReport::kStatsValueNameTransportType,
814 info.local_candidate.protocol());
815 report.AddValue(StatsReport::kStatsValueNameLocalCandidateType,
816 info.local_candidate.type());
817 report.AddValue(StatsReport::kStatsValueNameRemoteCandidateType,
818 info.remote_candidate.type());
819 reports_[report.id] = report;
826 void StatsCollector::ExtractVoiceInfo() {
827 if (!session_->voice_channel()) {
830 cricket::VoiceMediaInfo voice_info;
831 if (!session_->voice_channel()->GetStats(&voice_info)) {
832 LOG(LS_ERROR) << "Failed to get voice channel stats.";
835 std::string transport_id;
836 if (!GetTransportIdFromProxy(session_->voice_channel()->content_name(),
838 LOG(LS_ERROR) << "Failed to get transport name for proxy "
839 << session_->voice_channel()->content_name();
842 ExtractStatsFromList(voice_info.receivers, transport_id, this);
843 ExtractStatsFromList(voice_info.senders, transport_id, this);
845 UpdateStatsFromExistingLocalAudioTracks();
848 void StatsCollector::ExtractVideoInfo(
849 PeerConnectionInterface::StatsOutputLevel level) {
850 if (!session_->video_channel()) {
853 cricket::StatsOptions options;
854 options.include_received_propagation_stats =
855 (level >= PeerConnectionInterface::kStatsOutputLevelDebug) ?
857 cricket::VideoMediaInfo video_info;
858 if (!session_->video_channel()->GetStats(options, &video_info)) {
859 LOG(LS_ERROR) << "Failed to get video channel stats.";
862 std::string transport_id;
863 if (!GetTransportIdFromProxy(session_->video_channel()->content_name(),
865 LOG(LS_ERROR) << "Failed to get transport name for proxy "
866 << session_->video_channel()->content_name();
869 ExtractStatsFromList(video_info.receivers, transport_id, this);
870 ExtractStatsFromList(video_info.senders, transport_id, this);
871 if (video_info.bw_estimations.size() != 1) {
872 LOG(LS_ERROR) << "BWEs count: " << video_info.bw_estimations.size();
874 StatsReport* report = &reports_[StatsReport::kStatsReportVideoBweId];
876 video_info.bw_estimations[0], stats_gathering_started_, level, report);
880 double StatsCollector::GetTimeNow() {
881 return timing_.WallTimeNow() * talk_base::kNumMillisecsPerSec;
884 bool StatsCollector::GetTransportIdFromProxy(const std::string& proxy,
885 std::string* transport) {
886 // TODO(hta): Remove handling of empty proxy name once tests do not use it.
891 if (proxy_to_transport_.find(proxy) == proxy_to_transport_.end()) {
892 LOG(LS_ERROR) << "No transport ID mapping for " << proxy;
895 std::ostringstream ost;
896 // Component 1 is always used for RTP.
897 ost << "Channel-" << proxy_to_transport_[proxy] << "-1";
898 *transport = ost.str();
902 StatsReport* StatsCollector::GetReport(const std::string& type,
903 const std::string& id) {
904 std::string statsid = StatsId(type, id);
905 StatsReport* report = NULL;
906 std::map<std::string, StatsReport>::iterator it = reports_.find(statsid);
907 if (it != reports_.end())
908 report = &(it->second);
913 StatsReport* StatsCollector::GetOrCreateReport(const std::string& type,
914 const std::string& id) {
915 StatsReport* report = GetReport(type, id);
916 if (report == NULL) {
917 std::string statsid = StatsId(type, id);
918 report = &reports_[statsid]; // Create new element.
919 report->id = statsid;
926 void StatsCollector::UpdateStatsFromExistingLocalAudioTracks() {
927 // Loop through the existing local audio tracks.
928 for (LocalAudioTrackVector::const_iterator it = local_audio_tracks_.begin();
929 it != local_audio_tracks_.end(); ++it) {
930 AudioTrackInterface* track = it->first;
931 uint32 ssrc = it->second;
932 std::string ssrc_id = talk_base::ToString<uint32>(ssrc);
933 StatsReport* report = GetReport(StatsReport::kStatsReportTypeSsrc,
935 if (report == NULL) {
936 // This can happen if a local audio track is added to a stream on the
937 // fly and the report has not been set up yet. Do nothing in this case.
938 LOG(LS_ERROR) << "Stats report does not exist for ssrc " << ssrc;
942 // The same ssrc can be used by both local and remote audio tracks.
943 std::string track_id;
944 if (!ExtractValueFromReport(*report,
945 StatsReport::kStatsValueNameTrackId,
947 track_id != track->id()) {
951 UpdateReportFromAudioTrack(track, report);
955 void StatsCollector::UpdateReportFromAudioTrack(AudioTrackInterface* track,
956 StatsReport* report) {
957 ASSERT(track != NULL);
961 int signal_level = 0;
962 if (track->GetSignalLevel(&signal_level)) {
963 report->ReplaceValue(StatsReport::kStatsValueNameAudioInputLevel,
964 talk_base::ToString<int>(signal_level));
967 talk_base::scoped_refptr<AudioProcessorInterface> audio_processor(
968 track->GetAudioProcessor());
969 if (audio_processor.get() == NULL)
972 AudioProcessorInterface::AudioProcessorStats stats;
973 audio_processor->GetStats(&stats);
974 report->ReplaceValue(StatsReport::kStatsValueNameTypingNoiseState,
975 stats.typing_noise_detected ? "true" : "false");
976 report->ReplaceValue(StatsReport::kStatsValueNameEchoReturnLoss,
977 talk_base::ToString<int>(stats.echo_return_loss));
978 report->ReplaceValue(
979 StatsReport::kStatsValueNameEchoReturnLossEnhancement,
980 talk_base::ToString<int>(stats.echo_return_loss_enhancement));
981 report->ReplaceValue(StatsReport::kStatsValueNameEchoDelayMedian,
982 talk_base::ToString<int>(stats.echo_delay_median_ms));
983 report->ReplaceValue(StatsReport::kStatsValueNameEchoCancellationQualityMin,
984 talk_base::ToString<float>(stats.aec_quality_min));
985 report->ReplaceValue(StatsReport::kStatsValueNameEchoDelayStdDev,
986 talk_base::ToString<int>(stats.echo_delay_std_ms));
989 } // namespace webrtc