|  | /* | 
|  | *  Copyright 2016 The WebRTC Project Authors. All rights reserved. | 
|  | * | 
|  | *  Use of this source code is governed by a BSD-style license | 
|  | *  that can be found in the LICENSE file in the root of the source | 
|  | *  tree. An additional intellectual property rights grant can be found | 
|  | *  in the file PATENTS.  All contributing project authors may | 
|  | *  be found in the AUTHORS file in the root of the source tree. | 
|  | */ | 
|  |  | 
|  | #include "pc/rtcstatscollector.h" | 
|  |  | 
|  | #include <memory> | 
|  | #include <sstream> | 
|  | #include <string> | 
|  | #include <utility> | 
|  | #include <vector> | 
|  |  | 
|  | #include "api/candidate.h" | 
|  | #include "api/mediastreaminterface.h" | 
|  | #include "api/peerconnectioninterface.h" | 
|  | #include "media/base/mediachannel.h" | 
|  | #include "p2p/base/p2pconstants.h" | 
|  | #include "p2p/base/port.h" | 
|  | #include "pc/peerconnection.h" | 
|  | #include "rtc_base/checks.h" | 
|  | #include "rtc_base/stringutils.h" | 
|  | #include "rtc_base/timeutils.h" | 
|  | #include "rtc_base/trace_event.h" | 
|  |  | 
|  | namespace webrtc { | 
|  |  | 
|  | namespace { | 
|  |  | 
|  | std::string RTCCertificateIDFromFingerprint(const std::string& fingerprint) { | 
|  | return "RTCCertificate_" + fingerprint; | 
|  | } | 
|  |  | 
|  | std::string RTCCodecStatsIDFromDirectionMediaAndPayload( | 
|  | bool inbound, bool audio, uint32_t payload_type) { | 
|  | // TODO(hbos): The present codec ID assignment is not sufficient to support | 
|  | // Unified Plan or unbundled connections in all cases. When we are able to | 
|  | // handle multiple m= lines of the same media type (and multiple BaseChannels | 
|  | // for the same type is possible?) this needs to be updated to differentiate | 
|  | // the transport being used, and stats need to be collected for all of them. | 
|  | if (inbound) { | 
|  | return audio ? "RTCCodec_InboundAudio_" + rtc::ToString<>(payload_type) | 
|  | : "RTCCodec_InboundVideo_" + rtc::ToString<>(payload_type); | 
|  | } | 
|  | return audio ? "RTCCodec_OutboundAudio_" + rtc::ToString<>(payload_type) | 
|  | : "RTCCodec_OutboundVideo_" + rtc::ToString<>(payload_type); | 
|  | } | 
|  |  | 
|  | std::string RTCIceCandidatePairStatsIDFromConnectionInfo( | 
|  | const cricket::ConnectionInfo& info) { | 
|  | return "RTCIceCandidatePair_" + info.local_candidate.id() + "_" + | 
|  | info.remote_candidate.id(); | 
|  | } | 
|  |  | 
|  | const char kSender[] = "sender"; | 
|  | const char kReceiver[] = "receiver"; | 
|  |  | 
|  | std::string RTCMediaStreamTrackStatsIDFromDirectionAndAttachment( | 
|  | const char* direction, | 
|  | int attachment_id) { | 
|  | std::ostringstream oss; | 
|  | oss << "RTCMediaStreamTrack_" << direction << "_" << attachment_id; | 
|  | return oss.str(); | 
|  | } | 
|  |  | 
|  | std::string RTCTransportStatsIDFromTransportChannel( | 
|  | const std::string& transport_name, int channel_component) { | 
|  | return "RTCTransport_" + transport_name + "_" + | 
|  | rtc::ToString<>(channel_component); | 
|  | } | 
|  |  | 
|  | std::string RTCInboundRTPStreamStatsIDFromSSRC(bool audio, uint32_t ssrc) { | 
|  | return audio ? "RTCInboundRTPAudioStream_" + rtc::ToString<>(ssrc) | 
|  | : "RTCInboundRTPVideoStream_" + rtc::ToString<>(ssrc); | 
|  | } | 
|  |  | 
|  | std::string RTCOutboundRTPStreamStatsIDFromSSRC(bool audio, uint32_t ssrc) { | 
|  | return audio ? "RTCOutboundRTPAudioStream_" + rtc::ToString<>(ssrc) | 
|  | : "RTCOutboundRTPVideoStream_" + rtc::ToString<>(ssrc); | 
|  | } | 
|  |  | 
|  | const char* CandidateTypeToRTCIceCandidateType(const std::string& type) { | 
|  | if (type == cricket::LOCAL_PORT_TYPE) | 
|  | return RTCIceCandidateType::kHost; | 
|  | if (type == cricket::STUN_PORT_TYPE) | 
|  | return RTCIceCandidateType::kSrflx; | 
|  | if (type == cricket::PRFLX_PORT_TYPE) | 
|  | return RTCIceCandidateType::kPrflx; | 
|  | if (type == cricket::RELAY_PORT_TYPE) | 
|  | return RTCIceCandidateType::kRelay; | 
|  | RTC_NOTREACHED(); | 
|  | return nullptr; | 
|  | } | 
|  |  | 
|  | const char* DataStateToRTCDataChannelState( | 
|  | DataChannelInterface::DataState state) { | 
|  | switch (state) { | 
|  | case DataChannelInterface::kConnecting: | 
|  | return RTCDataChannelState::kConnecting; | 
|  | case DataChannelInterface::kOpen: | 
|  | return RTCDataChannelState::kOpen; | 
|  | case DataChannelInterface::kClosing: | 
|  | return RTCDataChannelState::kClosing; | 
|  | case DataChannelInterface::kClosed: | 
|  | return RTCDataChannelState::kClosed; | 
|  | default: | 
|  | RTC_NOTREACHED(); | 
|  | return nullptr; | 
|  | } | 
|  | } | 
|  |  | 
|  | const char* IceCandidatePairStateToRTCStatsIceCandidatePairState( | 
|  | cricket::IceCandidatePairState state) { | 
|  | switch (state) { | 
|  | case cricket::IceCandidatePairState::WAITING: | 
|  | return RTCStatsIceCandidatePairState::kWaiting; | 
|  | case cricket::IceCandidatePairState::IN_PROGRESS: | 
|  | return RTCStatsIceCandidatePairState::kInProgress; | 
|  | case cricket::IceCandidatePairState::SUCCEEDED: | 
|  | return RTCStatsIceCandidatePairState::kSucceeded; | 
|  | case cricket::IceCandidatePairState::FAILED: | 
|  | return RTCStatsIceCandidatePairState::kFailed; | 
|  | default: | 
|  | RTC_NOTREACHED(); | 
|  | return nullptr; | 
|  | } | 
|  | } | 
|  |  | 
|  | const char* DtlsTransportStateToRTCDtlsTransportState( | 
|  | cricket::DtlsTransportState state) { | 
|  | switch (state) { | 
|  | case cricket::DTLS_TRANSPORT_NEW: | 
|  | return RTCDtlsTransportState::kNew; | 
|  | case cricket::DTLS_TRANSPORT_CONNECTING: | 
|  | return RTCDtlsTransportState::kConnecting; | 
|  | case cricket::DTLS_TRANSPORT_CONNECTED: | 
|  | return RTCDtlsTransportState::kConnected; | 
|  | case cricket::DTLS_TRANSPORT_CLOSED: | 
|  | return RTCDtlsTransportState::kClosed; | 
|  | case cricket::DTLS_TRANSPORT_FAILED: | 
|  | return RTCDtlsTransportState::kFailed; | 
|  | default: | 
|  | RTC_NOTREACHED(); | 
|  | return nullptr; | 
|  | } | 
|  | } | 
|  |  | 
|  | const char* NetworkAdapterTypeToStatsType(rtc::AdapterType type) { | 
|  | switch (type) { | 
|  | case rtc::ADAPTER_TYPE_CELLULAR: | 
|  | return RTCNetworkType::kCellular; | 
|  | case rtc::ADAPTER_TYPE_ETHERNET: | 
|  | return RTCNetworkType::kEthernet; | 
|  | case rtc::ADAPTER_TYPE_WIFI: | 
|  | return RTCNetworkType::kWifi; | 
|  | case rtc::ADAPTER_TYPE_VPN: | 
|  | return RTCNetworkType::kVpn; | 
|  | case rtc::ADAPTER_TYPE_UNKNOWN: | 
|  | case rtc::ADAPTER_TYPE_LOOPBACK: | 
|  | return RTCNetworkType::kUnknown; | 
|  | } | 
|  | RTC_NOTREACHED(); | 
|  | return nullptr; | 
|  | } | 
|  |  | 
|  | double DoubleAudioLevelFromIntAudioLevel(int audio_level) { | 
|  | RTC_DCHECK_GE(audio_level, 0); | 
|  | RTC_DCHECK_LE(audio_level, 32767); | 
|  | return audio_level / 32767.0; | 
|  | } | 
|  |  | 
|  | std::unique_ptr<RTCCodecStats> CodecStatsFromRtpCodecParameters( | 
|  | uint64_t timestamp_us, bool inbound, bool audio, | 
|  | const RtpCodecParameters& codec_params) { | 
|  | RTC_DCHECK_GE(codec_params.payload_type, 0); | 
|  | RTC_DCHECK_LE(codec_params.payload_type, 127); | 
|  | RTC_DCHECK(codec_params.clock_rate); | 
|  | uint32_t payload_type = static_cast<uint32_t>(codec_params.payload_type); | 
|  | std::unique_ptr<RTCCodecStats> codec_stats(new RTCCodecStats( | 
|  | RTCCodecStatsIDFromDirectionMediaAndPayload(inbound, audio, payload_type), | 
|  | timestamp_us)); | 
|  | codec_stats->payload_type = payload_type; | 
|  | codec_stats->mime_type = codec_params.mime_type(); | 
|  | if (codec_params.clock_rate) { | 
|  | codec_stats->clock_rate = static_cast<uint32_t>(*codec_params.clock_rate); | 
|  | } | 
|  | return codec_stats; | 
|  | } | 
|  |  | 
|  | void SetMediaStreamTrackStatsFromMediaStreamTrackInterface( | 
|  | const MediaStreamTrackInterface& track, | 
|  | RTCMediaStreamTrackStats* track_stats) { | 
|  | track_stats->track_identifier = track.id(); | 
|  | track_stats->ended = (track.state() == MediaStreamTrackInterface::kEnded); | 
|  | } | 
|  |  | 
|  | // Provides the media independent counters (both audio and video). | 
|  | void SetInboundRTPStreamStatsFromMediaReceiverInfo( | 
|  | const cricket::MediaReceiverInfo& media_receiver_info, | 
|  | RTCInboundRTPStreamStats* inbound_stats) { | 
|  | RTC_DCHECK(inbound_stats); | 
|  | inbound_stats->ssrc = media_receiver_info.ssrc(); | 
|  | // TODO(hbos): Support the remote case. https://crbug.com/657855 | 
|  | inbound_stats->is_remote = false; | 
|  | inbound_stats->packets_received = | 
|  | static_cast<uint32_t>(media_receiver_info.packets_rcvd); | 
|  | inbound_stats->bytes_received = | 
|  | static_cast<uint64_t>(media_receiver_info.bytes_rcvd); | 
|  | inbound_stats->packets_lost = | 
|  | static_cast<int32_t>(media_receiver_info.packets_lost); | 
|  | inbound_stats->fraction_lost = | 
|  | static_cast<double>(media_receiver_info.fraction_lost); | 
|  | } | 
|  |  | 
|  | void SetInboundRTPStreamStatsFromVoiceReceiverInfo( | 
|  | const cricket::VoiceReceiverInfo& voice_receiver_info, | 
|  | RTCInboundRTPStreamStats* inbound_audio) { | 
|  | SetInboundRTPStreamStatsFromMediaReceiverInfo( | 
|  | voice_receiver_info, inbound_audio); | 
|  | inbound_audio->media_type = "audio"; | 
|  | if (voice_receiver_info.codec_payload_type) { | 
|  | inbound_audio->codec_id = | 
|  | RTCCodecStatsIDFromDirectionMediaAndPayload( | 
|  | true, true, *voice_receiver_info.codec_payload_type); | 
|  | } | 
|  | inbound_audio->jitter = | 
|  | static_cast<double>(voice_receiver_info.jitter_ms) / | 
|  | rtc::kNumMillisecsPerSec; | 
|  | // |fir_count|, |pli_count| and |sli_count| are only valid for video and are | 
|  | // purposefully left undefined for audio. | 
|  | } | 
|  |  | 
|  | void SetInboundRTPStreamStatsFromVideoReceiverInfo( | 
|  | const cricket::VideoReceiverInfo& video_receiver_info, | 
|  | RTCInboundRTPStreamStats* inbound_video) { | 
|  | SetInboundRTPStreamStatsFromMediaReceiverInfo( | 
|  | video_receiver_info, inbound_video); | 
|  | inbound_video->media_type = "video"; | 
|  | if (video_receiver_info.codec_payload_type) { | 
|  | inbound_video->codec_id = | 
|  | RTCCodecStatsIDFromDirectionMediaAndPayload( | 
|  | true, false, *video_receiver_info.codec_payload_type); | 
|  | } | 
|  | inbound_video->fir_count = | 
|  | static_cast<uint32_t>(video_receiver_info.firs_sent); | 
|  | inbound_video->pli_count = | 
|  | static_cast<uint32_t>(video_receiver_info.plis_sent); | 
|  | inbound_video->nack_count = | 
|  | static_cast<uint32_t>(video_receiver_info.nacks_sent); | 
|  | inbound_video->frames_decoded = video_receiver_info.frames_decoded; | 
|  | if (video_receiver_info.qp_sum) | 
|  | inbound_video->qp_sum = *video_receiver_info.qp_sum; | 
|  | } | 
|  |  | 
|  | // Provides the media independent counters (both audio and video). | 
|  | void SetOutboundRTPStreamStatsFromMediaSenderInfo( | 
|  | const cricket::MediaSenderInfo& media_sender_info, | 
|  | RTCOutboundRTPStreamStats* outbound_stats) { | 
|  | RTC_DCHECK(outbound_stats); | 
|  | outbound_stats->ssrc = media_sender_info.ssrc(); | 
|  | // TODO(hbos): Support the remote case. https://crbug.com/657856 | 
|  | outbound_stats->is_remote = false; | 
|  | outbound_stats->packets_sent = | 
|  | static_cast<uint32_t>(media_sender_info.packets_sent); | 
|  | outbound_stats->bytes_sent = | 
|  | static_cast<uint64_t>(media_sender_info.bytes_sent); | 
|  | } | 
|  |  | 
|  | void SetOutboundRTPStreamStatsFromVoiceSenderInfo( | 
|  | const cricket::VoiceSenderInfo& voice_sender_info, | 
|  | RTCOutboundRTPStreamStats* outbound_audio) { | 
|  | SetOutboundRTPStreamStatsFromMediaSenderInfo( | 
|  | voice_sender_info, outbound_audio); | 
|  | outbound_audio->media_type = "audio"; | 
|  | if (voice_sender_info.codec_payload_type) { | 
|  | outbound_audio->codec_id = | 
|  | RTCCodecStatsIDFromDirectionMediaAndPayload( | 
|  | false, true, *voice_sender_info.codec_payload_type); | 
|  | } | 
|  | // |fir_count|, |pli_count| and |sli_count| are only valid for video and are | 
|  | // purposefully left undefined for audio. | 
|  | } | 
|  |  | 
|  | void SetOutboundRTPStreamStatsFromVideoSenderInfo( | 
|  | const cricket::VideoSenderInfo& video_sender_info, | 
|  | RTCOutboundRTPStreamStats* outbound_video) { | 
|  | SetOutboundRTPStreamStatsFromMediaSenderInfo( | 
|  | video_sender_info, outbound_video); | 
|  | outbound_video->media_type = "video"; | 
|  | if (video_sender_info.codec_payload_type) { | 
|  | outbound_video->codec_id = | 
|  | RTCCodecStatsIDFromDirectionMediaAndPayload( | 
|  | false, false, *video_sender_info.codec_payload_type); | 
|  | } | 
|  | outbound_video->fir_count = | 
|  | static_cast<uint32_t>(video_sender_info.firs_rcvd); | 
|  | outbound_video->pli_count = | 
|  | static_cast<uint32_t>(video_sender_info.plis_rcvd); | 
|  | outbound_video->nack_count = | 
|  | static_cast<uint32_t>(video_sender_info.nacks_rcvd); | 
|  | if (video_sender_info.qp_sum) | 
|  | outbound_video->qp_sum = *video_sender_info.qp_sum; | 
|  | outbound_video->frames_encoded = video_sender_info.frames_encoded; | 
|  | } | 
|  |  | 
|  | void ProduceCertificateStatsFromSSLCertificateStats( | 
|  | int64_t timestamp_us, const rtc::SSLCertificateStats& certificate_stats, | 
|  | RTCStatsReport* report) { | 
|  | RTCCertificateStats* prev_certificate_stats = nullptr; | 
|  | for (const rtc::SSLCertificateStats* s = &certificate_stats; s; | 
|  | s = s->issuer.get()) { | 
|  | std::string certificate_stats_id = | 
|  | RTCCertificateIDFromFingerprint(s->fingerprint); | 
|  | // It is possible for the same certificate to show up multiple times, e.g. | 
|  | // if local and remote side use the same certificate in a loopback call. | 
|  | // If the report already contains stats for this certificate, skip it. | 
|  | if (report->Get(certificate_stats_id)) { | 
|  | RTC_DCHECK_EQ(s, &certificate_stats); | 
|  | break; | 
|  | } | 
|  | RTCCertificateStats* certificate_stats = new RTCCertificateStats( | 
|  | certificate_stats_id, timestamp_us); | 
|  | certificate_stats->fingerprint = s->fingerprint; | 
|  | certificate_stats->fingerprint_algorithm = s->fingerprint_algorithm; | 
|  | certificate_stats->base64_certificate = s->base64_certificate; | 
|  | if (prev_certificate_stats) | 
|  | prev_certificate_stats->issuer_certificate_id = certificate_stats->id(); | 
|  | report->AddStats(std::unique_ptr<RTCCertificateStats>(certificate_stats)); | 
|  | prev_certificate_stats = certificate_stats; | 
|  | } | 
|  | } | 
|  |  | 
|  | const std::string& ProduceIceCandidateStats( | 
|  | int64_t timestamp_us, const cricket::Candidate& candidate, bool is_local, | 
|  | const std::string& transport_id, RTCStatsReport* report) { | 
|  | const std::string& id = "RTCIceCandidate_" + candidate.id(); | 
|  | const RTCStats* stats = report->Get(id); | 
|  | if (!stats) { | 
|  | std::unique_ptr<RTCIceCandidateStats> candidate_stats; | 
|  | if (is_local) | 
|  | candidate_stats.reset(new RTCLocalIceCandidateStats(id, timestamp_us)); | 
|  | else | 
|  | candidate_stats.reset(new RTCRemoteIceCandidateStats(id, timestamp_us)); | 
|  | candidate_stats->transport_id = transport_id; | 
|  | if (is_local) { | 
|  | candidate_stats->network_type = | 
|  | NetworkAdapterTypeToStatsType(candidate.network_type()); | 
|  | } else { | 
|  | // We don't expect to know the adapter type of remote candidates. | 
|  | RTC_DCHECK_EQ(rtc::ADAPTER_TYPE_UNKNOWN, candidate.network_type()); | 
|  | } | 
|  | candidate_stats->ip = candidate.address().ipaddr().ToString(); | 
|  | candidate_stats->port = static_cast<int32_t>(candidate.address().port()); | 
|  | candidate_stats->protocol = candidate.protocol(); | 
|  | candidate_stats->candidate_type = CandidateTypeToRTCIceCandidateType( | 
|  | candidate.type()); | 
|  | candidate_stats->priority = static_cast<int32_t>(candidate.priority()); | 
|  |  | 
|  | stats = candidate_stats.get(); | 
|  | report->AddStats(std::move(candidate_stats)); | 
|  | } | 
|  | RTC_DCHECK_EQ(stats->type(), is_local ? RTCLocalIceCandidateStats::kType | 
|  | : RTCRemoteIceCandidateStats::kType); | 
|  | return stats->id(); | 
|  | } | 
|  |  | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> | 
|  | ProduceMediaStreamTrackStatsFromVoiceSenderInfo( | 
|  | int64_t timestamp_us, | 
|  | const AudioTrackInterface& audio_track, | 
|  | const cricket::VoiceSenderInfo& voice_sender_info, | 
|  | int attachment_id) { | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> audio_track_stats( | 
|  | new RTCMediaStreamTrackStats( | 
|  | RTCMediaStreamTrackStatsIDFromDirectionAndAttachment(kSender, | 
|  | attachment_id), | 
|  | timestamp_us, RTCMediaStreamTrackKind::kAudio)); | 
|  | SetMediaStreamTrackStatsFromMediaStreamTrackInterface( | 
|  | audio_track, audio_track_stats.get()); | 
|  | audio_track_stats->remote_source = false; | 
|  | audio_track_stats->detached = false; | 
|  | if (voice_sender_info.audio_level >= 0) { | 
|  | audio_track_stats->audio_level = DoubleAudioLevelFromIntAudioLevel( | 
|  | voice_sender_info.audio_level); | 
|  | } | 
|  | audio_track_stats->total_audio_energy = voice_sender_info.total_input_energy; | 
|  | audio_track_stats->total_samples_duration = | 
|  | voice_sender_info.total_input_duration; | 
|  | if (voice_sender_info.apm_statistics.echo_return_loss) { | 
|  | audio_track_stats->echo_return_loss = | 
|  | *voice_sender_info.apm_statistics.echo_return_loss; | 
|  | } | 
|  | if (voice_sender_info.apm_statistics.echo_return_loss_enhancement) { | 
|  | audio_track_stats->echo_return_loss_enhancement = | 
|  | *voice_sender_info.apm_statistics.echo_return_loss_enhancement; | 
|  | } | 
|  | return audio_track_stats; | 
|  | } | 
|  |  | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> | 
|  | ProduceMediaStreamTrackStatsFromVoiceReceiverInfo( | 
|  | int64_t timestamp_us, | 
|  | const AudioTrackInterface& audio_track, | 
|  | const cricket::VoiceReceiverInfo& voice_receiver_info, | 
|  | int attachment_id) { | 
|  | // Since receiver tracks can't be reattached, we use the SSRC as | 
|  | // an attachment identifier. | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> audio_track_stats( | 
|  | new RTCMediaStreamTrackStats( | 
|  | RTCMediaStreamTrackStatsIDFromDirectionAndAttachment(kReceiver, | 
|  | attachment_id), | 
|  | timestamp_us, RTCMediaStreamTrackKind::kAudio)); | 
|  | SetMediaStreamTrackStatsFromMediaStreamTrackInterface( | 
|  | audio_track, audio_track_stats.get()); | 
|  | audio_track_stats->remote_source = true; | 
|  | audio_track_stats->detached = false; | 
|  | if (voice_receiver_info.audio_level >= 0) { | 
|  | audio_track_stats->audio_level = DoubleAudioLevelFromIntAudioLevel( | 
|  | voice_receiver_info.audio_level); | 
|  | } | 
|  | audio_track_stats->jitter_buffer_delay = | 
|  | voice_receiver_info.jitter_buffer_delay_seconds; | 
|  | audio_track_stats->total_audio_energy = | 
|  | voice_receiver_info.total_output_energy; | 
|  | audio_track_stats->total_samples_received = | 
|  | voice_receiver_info.total_samples_received; | 
|  | audio_track_stats->total_samples_duration = | 
|  | voice_receiver_info.total_output_duration; | 
|  | audio_track_stats->concealed_samples = voice_receiver_info.concealed_samples; | 
|  | audio_track_stats->concealment_events = | 
|  | voice_receiver_info.concealment_events; | 
|  | return audio_track_stats; | 
|  | } | 
|  |  | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> | 
|  | ProduceMediaStreamTrackStatsFromVideoSenderInfo( | 
|  | int64_t timestamp_us, | 
|  | const VideoTrackInterface& video_track, | 
|  | const cricket::VideoSenderInfo& video_sender_info, | 
|  | int attachment_id) { | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> video_track_stats( | 
|  | new RTCMediaStreamTrackStats( | 
|  | RTCMediaStreamTrackStatsIDFromDirectionAndAttachment(kSender, | 
|  |  | 
|  | attachment_id), | 
|  | timestamp_us, RTCMediaStreamTrackKind::kVideo)); | 
|  | SetMediaStreamTrackStatsFromMediaStreamTrackInterface( | 
|  | video_track, video_track_stats.get()); | 
|  | video_track_stats->remote_source = false; | 
|  | video_track_stats->detached = false; | 
|  | video_track_stats->frame_width = static_cast<uint32_t>( | 
|  | video_sender_info.send_frame_width); | 
|  | video_track_stats->frame_height = static_cast<uint32_t>( | 
|  | video_sender_info.send_frame_height); | 
|  | // TODO(hbos): Will reduce this by frames dropped due to congestion control | 
|  | // when available. https://crbug.com/659137 | 
|  | video_track_stats->frames_sent = video_sender_info.frames_encoded; | 
|  | return video_track_stats; | 
|  | } | 
|  |  | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> | 
|  | ProduceMediaStreamTrackStatsFromVideoReceiverInfo( | 
|  | int64_t timestamp_us, | 
|  | const VideoTrackInterface& video_track, | 
|  | const cricket::VideoReceiverInfo& video_receiver_info, | 
|  | int attachment_id) { | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> video_track_stats( | 
|  | new RTCMediaStreamTrackStats( | 
|  | RTCMediaStreamTrackStatsIDFromDirectionAndAttachment(kReceiver, | 
|  |  | 
|  | attachment_id), | 
|  | timestamp_us, RTCMediaStreamTrackKind::kVideo)); | 
|  | SetMediaStreamTrackStatsFromMediaStreamTrackInterface( | 
|  | video_track, video_track_stats.get()); | 
|  | video_track_stats->remote_source = true; | 
|  | video_track_stats->detached = false; | 
|  | if (video_receiver_info.frame_width > 0 && | 
|  | video_receiver_info.frame_height > 0) { | 
|  | video_track_stats->frame_width = static_cast<uint32_t>( | 
|  | video_receiver_info.frame_width); | 
|  | video_track_stats->frame_height = static_cast<uint32_t>( | 
|  | video_receiver_info.frame_height); | 
|  | } | 
|  | video_track_stats->frames_received = video_receiver_info.frames_received; | 
|  | // TODO(hbos): When we support receiving simulcast, this should be the total | 
|  | // number of frames correctly decoded, independent of which SSRC it was | 
|  | // received from. Since we don't support that, this is correct and is the same | 
|  | // value as "RTCInboundRTPStreamStats.framesDecoded". https://crbug.com/659137 | 
|  | video_track_stats->frames_decoded = video_receiver_info.frames_decoded; | 
|  | RTC_DCHECK_GE(video_receiver_info.frames_received, | 
|  | video_receiver_info.frames_rendered); | 
|  | video_track_stats->frames_dropped = video_receiver_info.frames_received - | 
|  | video_receiver_info.frames_rendered; | 
|  | return video_track_stats; | 
|  | } | 
|  |  | 
|  | void ProduceSenderMediaTrackStats( | 
|  | int64_t timestamp_us, | 
|  | const TrackMediaInfoMap& track_media_info_map, | 
|  | std::vector<rtc::scoped_refptr<RtpSenderInterface>> senders, | 
|  | RTCStatsReport* report) { | 
|  | // This function iterates over the senders to generate outgoing track stats. | 
|  |  | 
|  | // TODO(hbos): Return stats of detached tracks. We have to perform stats | 
|  | // gathering at the time of detachment to get accurate stats and timestamps. | 
|  | // https://crbug.com/659137 | 
|  | for (auto const sender : senders) { | 
|  | if (sender->media_type() == cricket::MEDIA_TYPE_AUDIO) { | 
|  | AudioTrackInterface* track = | 
|  | static_cast<AudioTrackInterface*>(sender->track().get()); | 
|  | if (!track) | 
|  | continue; | 
|  | cricket::VoiceSenderInfo null_sender_info; | 
|  | const cricket::VoiceSenderInfo* voice_sender_info = &null_sender_info; | 
|  | // TODO(hta): Checking on ssrc is not proper. There should be a way | 
|  | // to see from a sender whether it's connected or not. | 
|  | // Related to https://crbug.com/8694 (using ssrc 0 to indicate "none") | 
|  | if (sender->ssrc()) { | 
|  | voice_sender_info = | 
|  | track_media_info_map.GetVoiceSenderInfoBySsrc(sender->ssrc()); | 
|  | } | 
|  |  | 
|  | RTC_CHECK(voice_sender_info) | 
|  | << "No voice sender info for sender with ssrc " << sender->ssrc(); | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> audio_track_stats = | 
|  | ProduceMediaStreamTrackStatsFromVoiceSenderInfo( | 
|  | timestamp_us, *track, *voice_sender_info, sender->AttachmentId()); | 
|  | report->AddStats(std::move(audio_track_stats)); | 
|  | } else if (sender->media_type() == cricket::MEDIA_TYPE_VIDEO) { | 
|  | VideoTrackInterface* track = | 
|  | static_cast<VideoTrackInterface*>(sender->track().get()); | 
|  | if (!track) | 
|  | continue; | 
|  | cricket::VideoSenderInfo null_sender_info; | 
|  | const cricket::VideoSenderInfo* video_sender_info = &null_sender_info; | 
|  | // TODO(hta): Check on state not ssrc when state is available | 
|  | // Related to https://crbug.com/8694 (using ssrc 0 to indicate "none") | 
|  | if (sender->ssrc()) | 
|  | video_sender_info = | 
|  | track_media_info_map.GetVideoSenderInfoBySsrc(sender->ssrc()); | 
|  | RTC_CHECK(video_sender_info) | 
|  | << "No video sender info for sender with ssrc " << sender->ssrc(); | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> video_track_stats = | 
|  | ProduceMediaStreamTrackStatsFromVideoSenderInfo( | 
|  | timestamp_us, *track, *video_sender_info, sender->AttachmentId()); | 
|  | report->AddStats(std::move(video_track_stats)); | 
|  | } else { | 
|  | RTC_NOTREACHED(); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void ProduceReceiverMediaTrackStats( | 
|  | int64_t timestamp_us, | 
|  | const TrackMediaInfoMap& track_media_info_map, | 
|  | std::vector<rtc::scoped_refptr<RtpReceiverInterface>> receivers, | 
|  | RTCStatsReport* report) { | 
|  | // This function iterates over the receivers to find the remote tracks. | 
|  | for (auto const receiver : receivers) { | 
|  | if (receiver->media_type() == cricket::MEDIA_TYPE_AUDIO) { | 
|  | AudioTrackInterface* track = | 
|  | static_cast<AudioTrackInterface*>(receiver->track().get()); | 
|  | const cricket::VoiceReceiverInfo* voice_receiver_info = | 
|  | track_media_info_map.GetVoiceReceiverInfo(*track); | 
|  | if (!voice_receiver_info) { | 
|  | continue; | 
|  | } | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> audio_track_stats = | 
|  | ProduceMediaStreamTrackStatsFromVoiceReceiverInfo( | 
|  | timestamp_us, *track, *voice_receiver_info, | 
|  | receiver->AttachmentId()); | 
|  | report->AddStats(std::move(audio_track_stats)); | 
|  | } else if (receiver->media_type() == cricket::MEDIA_TYPE_VIDEO) { | 
|  | VideoTrackInterface* track = | 
|  | static_cast<VideoTrackInterface*>(receiver->track().get()); | 
|  | const cricket::VideoReceiverInfo* video_receiver_info = | 
|  | track_media_info_map.GetVideoReceiverInfo(*track); | 
|  | if (!video_receiver_info) { | 
|  | continue; | 
|  | } | 
|  | std::unique_ptr<RTCMediaStreamTrackStats> video_track_stats = | 
|  | ProduceMediaStreamTrackStatsFromVideoReceiverInfo( | 
|  | timestamp_us, *track, *video_receiver_info, | 
|  | receiver->AttachmentId()); | 
|  | report->AddStats(std::move(video_track_stats)); | 
|  | } else { | 
|  | RTC_NOTREACHED(); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void ProduceMediaStreamStats( | 
|  | int64_t timestamp_us, | 
|  | const std::vector<rtc::scoped_refptr<RtpSenderInterface>>& rtp_senders, | 
|  | const std::vector<rtc::scoped_refptr<RtpReceiverInterface>>& rtp_receivers, | 
|  | RTCStatsReport* report) { | 
|  | std::map<std::string, std::vector<std::string>> track_ids; | 
|  |  | 
|  | for (auto& sender : rtp_senders) { | 
|  | std::string track_id = RTCMediaStreamTrackStatsIDFromDirectionAndAttachment( | 
|  | kSender, sender->AttachmentId()); | 
|  | for (auto& stream_id : sender->stream_ids()) { | 
|  | track_ids[stream_id].push_back(track_id); | 
|  | } | 
|  | } | 
|  | for (auto& receiver : rtp_receivers) { | 
|  | std::string track_id = RTCMediaStreamTrackStatsIDFromDirectionAndAttachment( | 
|  | kReceiver, receiver->AttachmentId()); | 
|  | for (auto& stream : receiver->streams()) { | 
|  | track_ids[stream->label()].push_back(track_id); | 
|  | } | 
|  | } | 
|  |  | 
|  | // Build stats for each stream ID known. | 
|  | for (auto& it : track_ids) { | 
|  | std::unique_ptr<RTCMediaStreamStats> stream_stats( | 
|  | new RTCMediaStreamStats("RTCMediaStream_" + it.first, timestamp_us)); | 
|  | stream_stats->stream_identifier = it.first; | 
|  | stream_stats->track_ids = it.second; | 
|  | report->AddStats(std::move(stream_stats)); | 
|  | } | 
|  | } | 
|  |  | 
|  | }  // namespace | 
|  |  | 
|  | rtc::scoped_refptr<RTCStatsCollector> RTCStatsCollector::Create( | 
|  | PeerConnectionInternal* pc, | 
|  | int64_t cache_lifetime_us) { | 
|  | return rtc::scoped_refptr<RTCStatsCollector>( | 
|  | new rtc::RefCountedObject<RTCStatsCollector>(pc, cache_lifetime_us)); | 
|  | } | 
|  |  | 
|  | RTCStatsCollector::RTCStatsCollector(PeerConnectionInternal* pc, | 
|  | int64_t cache_lifetime_us) | 
|  | : pc_(pc), | 
|  | signaling_thread_(pc->signaling_thread()), | 
|  | worker_thread_(pc->worker_thread()), | 
|  | network_thread_(pc->network_thread()), | 
|  | num_pending_partial_reports_(0), | 
|  | partial_report_timestamp_us_(0), | 
|  | cache_timestamp_us_(0), | 
|  | cache_lifetime_us_(cache_lifetime_us) { | 
|  | RTC_DCHECK(pc_); | 
|  | RTC_DCHECK(signaling_thread_); | 
|  | RTC_DCHECK(worker_thread_); | 
|  | RTC_DCHECK(network_thread_); | 
|  | RTC_DCHECK_GE(cache_lifetime_us_, 0); | 
|  | pc_->SignalDataChannelCreated().connect( | 
|  | this, &RTCStatsCollector::OnDataChannelCreated); | 
|  | } | 
|  |  | 
|  | RTCStatsCollector::~RTCStatsCollector() { | 
|  | RTC_DCHECK_EQ(num_pending_partial_reports_, 0); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::GetStatsReport( | 
|  | rtc::scoped_refptr<RTCStatsCollectorCallback> callback) { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | RTC_DCHECK(callback); | 
|  | callbacks_.push_back(callback); | 
|  |  | 
|  | // "Now" using a monotonically increasing timer. | 
|  | int64_t cache_now_us = rtc::TimeMicros(); | 
|  | if (cached_report_ && | 
|  | cache_now_us - cache_timestamp_us_ <= cache_lifetime_us_) { | 
|  | // We have a fresh cached report to deliver. | 
|  | DeliverCachedReport(); | 
|  | } else if (!num_pending_partial_reports_) { | 
|  | // Only start gathering stats if we're not already gathering stats. In the | 
|  | // case of already gathering stats, |callback_| will be invoked when there | 
|  | // are no more pending partial reports. | 
|  |  | 
|  | // "Now" using a system clock, relative to the UNIX epoch (Jan 1, 1970, | 
|  | // UTC), in microseconds. The system clock could be modified and is not | 
|  | // necessarily monotonically increasing. | 
|  | int64_t timestamp_us = rtc::TimeUTCMicros(); | 
|  |  | 
|  | num_pending_partial_reports_ = 2; | 
|  | partial_report_timestamp_us_ = cache_now_us; | 
|  |  | 
|  | // Prepare |channel_name_pairs_| for use in | 
|  | // |ProducePartialResultsOnNetworkThread|. | 
|  | channel_name_pairs_.reset(new ChannelNamePairs()); | 
|  | if (pc_->voice_channel()) { | 
|  | channel_name_pairs_->voice = | 
|  | ChannelNamePair(pc_->voice_channel()->content_name(), | 
|  | pc_->voice_channel()->transport_name()); | 
|  | } | 
|  | if (pc_->video_channel()) { | 
|  | channel_name_pairs_->video = | 
|  | ChannelNamePair(pc_->video_channel()->content_name(), | 
|  | pc_->video_channel()->transport_name()); | 
|  | } | 
|  | if (pc_->rtp_data_channel()) { | 
|  | channel_name_pairs_->data = | 
|  | ChannelNamePair(pc_->rtp_data_channel()->content_name(), | 
|  | pc_->rtp_data_channel()->transport_name()); | 
|  | } | 
|  | if (pc_->sctp_content_name()) { | 
|  | channel_name_pairs_->data = ChannelNamePair(*pc_->sctp_content_name(), | 
|  | *pc_->sctp_transport_name()); | 
|  | } | 
|  | // Prepare |track_media_info_map_| for use in | 
|  | // |ProducePartialResultsOnNetworkThread| and | 
|  | // |ProducePartialResultsOnSignalingThread|. | 
|  | track_media_info_map_.reset(PrepareTrackMediaInfoMap_s().release()); | 
|  | // Prepare |track_to_id_| for use in |ProducePartialResultsOnNetworkThread|. | 
|  | // This avoids a possible deadlock if |MediaStreamTrackInterface::id| is | 
|  | // implemented to invoke on the signaling thread. | 
|  | track_to_id_ = PrepareTrackToID_s(); | 
|  |  | 
|  | // Prepare |call_stats_| here since GetCallStats() will hop to the worker | 
|  | // thread. | 
|  | // TODO(holmer): To avoid the hop we could move BWE and BWE stats to the | 
|  | // network thread, where it more naturally belongs. | 
|  | call_stats_ = pc_->GetCallStats(); | 
|  |  | 
|  | invoker_.AsyncInvoke<void>( | 
|  | RTC_FROM_HERE, network_thread_, | 
|  | rtc::Bind(&RTCStatsCollector::ProducePartialResultsOnNetworkThread, | 
|  | rtc::scoped_refptr<RTCStatsCollector>(this), timestamp_us)); | 
|  | ProducePartialResultsOnSignalingThread(timestamp_us); | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ClearCachedStatsReport() { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | cached_report_ = nullptr; | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::WaitForPendingRequest() { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | if (num_pending_partial_reports_) { | 
|  | rtc::Thread::Current()->ProcessMessages(0); | 
|  | while (num_pending_partial_reports_) { | 
|  | rtc::Thread::Current()->SleepMs(1); | 
|  | rtc::Thread::Current()->ProcessMessages(0); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProducePartialResultsOnSignalingThread( | 
|  | int64_t timestamp_us) { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | rtc::scoped_refptr<RTCStatsReport> report = RTCStatsReport::Create( | 
|  | timestamp_us); | 
|  |  | 
|  | ProduceDataChannelStats_s(timestamp_us, report.get()); | 
|  | ProduceMediaStreamAndTrackStats_s(timestamp_us, report.get()); | 
|  | ProducePeerConnectionStats_s(timestamp_us, report.get()); | 
|  |  | 
|  | AddPartialResults(report); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProducePartialResultsOnNetworkThread( | 
|  | int64_t timestamp_us) { | 
|  | RTC_DCHECK(network_thread_->IsCurrent()); | 
|  | rtc::scoped_refptr<RTCStatsReport> report = RTCStatsReport::Create( | 
|  | timestamp_us); | 
|  |  | 
|  | std::unique_ptr<SessionStats> session_stats = | 
|  | pc_->GetSessionStats(*channel_name_pairs_); | 
|  | if (session_stats) { | 
|  | std::map<std::string, CertificateStatsPair> transport_cert_stats = | 
|  | PrepareTransportCertificateStats_n(*session_stats); | 
|  |  | 
|  | ProduceCertificateStats_n( | 
|  | timestamp_us, transport_cert_stats, report.get()); | 
|  | ProduceCodecStats_n( | 
|  | timestamp_us, *track_media_info_map_, report.get()); | 
|  | ProduceIceCandidateAndPairStats_n(timestamp_us, *session_stats, | 
|  | track_media_info_map_->video_media_info(), | 
|  | call_stats_, report.get()); | 
|  | ProduceRTPStreamStats_n(timestamp_us, *session_stats, *channel_name_pairs_, | 
|  | *track_media_info_map_, report.get()); | 
|  | ProduceTransportStats_n( | 
|  | timestamp_us, *session_stats, transport_cert_stats, report.get()); | 
|  | } | 
|  |  | 
|  | AddPartialResults(report); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::AddPartialResults( | 
|  | const rtc::scoped_refptr<RTCStatsReport>& partial_report) { | 
|  | if (!signaling_thread_->IsCurrent()) { | 
|  | invoker_.AsyncInvoke<void>(RTC_FROM_HERE, signaling_thread_, | 
|  | rtc::Bind(&RTCStatsCollector::AddPartialResults_s, | 
|  | rtc::scoped_refptr<RTCStatsCollector>(this), | 
|  | partial_report)); | 
|  | return; | 
|  | } | 
|  | AddPartialResults_s(partial_report); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::AddPartialResults_s( | 
|  | rtc::scoped_refptr<RTCStatsReport> partial_report) { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | RTC_DCHECK_GT(num_pending_partial_reports_, 0); | 
|  | if (!partial_report_) | 
|  | partial_report_ = partial_report; | 
|  | else | 
|  | partial_report_->TakeMembersFrom(partial_report); | 
|  | --num_pending_partial_reports_; | 
|  | if (!num_pending_partial_reports_) { | 
|  | cache_timestamp_us_ = partial_report_timestamp_us_; | 
|  | cached_report_ = partial_report_; | 
|  | partial_report_ = nullptr; | 
|  | channel_name_pairs_.reset(); | 
|  | track_media_info_map_.reset(); | 
|  | track_to_id_.clear(); | 
|  | // Trace WebRTC Stats when getStats is called on Javascript. | 
|  | // This allows access to WebRTC stats from trace logs. To enable them, | 
|  | // select the "webrtc_stats" category when recording traces. | 
|  | TRACE_EVENT_INSTANT1("webrtc_stats", "webrtc_stats", "report", | 
|  | cached_report_->ToJson()); | 
|  | DeliverCachedReport(); | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::DeliverCachedReport() { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | RTC_DCHECK(!callbacks_.empty()); | 
|  | RTC_DCHECK(cached_report_); | 
|  | for (const rtc::scoped_refptr<RTCStatsCollectorCallback>& callback : | 
|  | callbacks_) { | 
|  | callback->OnStatsDelivered(cached_report_); | 
|  | } | 
|  | callbacks_.clear(); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProduceCertificateStats_n( | 
|  | int64_t timestamp_us, | 
|  | const std::map<std::string, CertificateStatsPair>& transport_cert_stats, | 
|  | RTCStatsReport* report) const { | 
|  | RTC_DCHECK(network_thread_->IsCurrent()); | 
|  | for (const auto& transport_cert_stats_pair : transport_cert_stats) { | 
|  | if (transport_cert_stats_pair.second.local) { | 
|  | ProduceCertificateStatsFromSSLCertificateStats( | 
|  | timestamp_us, *transport_cert_stats_pair.second.local.get(), report); | 
|  | } | 
|  | if (transport_cert_stats_pair.second.remote) { | 
|  | ProduceCertificateStatsFromSSLCertificateStats( | 
|  | timestamp_us, *transport_cert_stats_pair.second.remote.get(), report); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProduceCodecStats_n( | 
|  | int64_t timestamp_us, const TrackMediaInfoMap& track_media_info_map, | 
|  | RTCStatsReport* report) const { | 
|  | RTC_DCHECK(network_thread_->IsCurrent()); | 
|  | // Audio | 
|  | if (track_media_info_map.voice_media_info()) { | 
|  | // Inbound | 
|  | for (const auto& pair : | 
|  | track_media_info_map.voice_media_info()->receive_codecs) { | 
|  | report->AddStats(CodecStatsFromRtpCodecParameters( | 
|  | timestamp_us, true, true, pair.second)); | 
|  | } | 
|  | // Outbound | 
|  | for (const auto& pair : | 
|  | track_media_info_map.voice_media_info()->send_codecs) { | 
|  | report->AddStats(CodecStatsFromRtpCodecParameters( | 
|  | timestamp_us, false, true, pair.second)); | 
|  | } | 
|  | } | 
|  | // Video | 
|  | if (track_media_info_map.video_media_info()) { | 
|  | // Inbound | 
|  | for (const auto& pair : | 
|  | track_media_info_map.video_media_info()->receive_codecs) { | 
|  | report->AddStats(CodecStatsFromRtpCodecParameters( | 
|  | timestamp_us, true, false, pair.second)); | 
|  | } | 
|  | // Outbound | 
|  | for (const auto& pair : | 
|  | track_media_info_map.video_media_info()->send_codecs) { | 
|  | report->AddStats(CodecStatsFromRtpCodecParameters( | 
|  | timestamp_us, false, false, pair.second)); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProduceDataChannelStats_s( | 
|  | int64_t timestamp_us, RTCStatsReport* report) const { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | for (const rtc::scoped_refptr<DataChannel>& data_channel : | 
|  | pc_->sctp_data_channels()) { | 
|  | std::unique_ptr<RTCDataChannelStats> data_channel_stats( | 
|  | new RTCDataChannelStats( | 
|  | "RTCDataChannel_" + rtc::ToString<>(data_channel->id()), | 
|  | timestamp_us)); | 
|  | data_channel_stats->label = data_channel->label(); | 
|  | data_channel_stats->protocol = data_channel->protocol(); | 
|  | data_channel_stats->datachannelid = data_channel->id(); | 
|  | data_channel_stats->state = | 
|  | DataStateToRTCDataChannelState(data_channel->state()); | 
|  | data_channel_stats->messages_sent = data_channel->messages_sent(); | 
|  | data_channel_stats->bytes_sent = data_channel->bytes_sent(); | 
|  | data_channel_stats->messages_received = data_channel->messages_received(); | 
|  | data_channel_stats->bytes_received = data_channel->bytes_received(); | 
|  | report->AddStats(std::move(data_channel_stats)); | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProduceIceCandidateAndPairStats_n( | 
|  | int64_t timestamp_us, | 
|  | const SessionStats& session_stats, | 
|  | const cricket::VideoMediaInfo* video_media_info, | 
|  | const Call::Stats& call_stats, | 
|  | RTCStatsReport* report) const { | 
|  | RTC_DCHECK(network_thread_->IsCurrent()); | 
|  | for (const auto& transport_stats : session_stats.transport_stats) { | 
|  | for (const auto& channel_stats : transport_stats.second.channel_stats) { | 
|  | std::string transport_id = RTCTransportStatsIDFromTransportChannel( | 
|  | transport_stats.second.transport_name, channel_stats.component); | 
|  | for (const cricket::ConnectionInfo& info : | 
|  | channel_stats.connection_infos) { | 
|  | std::unique_ptr<RTCIceCandidatePairStats> candidate_pair_stats( | 
|  | new RTCIceCandidatePairStats( | 
|  | RTCIceCandidatePairStatsIDFromConnectionInfo(info), | 
|  | timestamp_us)); | 
|  |  | 
|  | candidate_pair_stats->transport_id = transport_id; | 
|  | // TODO(hbos): There could be other candidates that are not paired with | 
|  | // anything. We don't have a complete list. Local candidates come from | 
|  | // Port objects, and prflx candidates (both local and remote) are only | 
|  | // stored in candidate pairs. https://crbug.com/632723 | 
|  | candidate_pair_stats->local_candidate_id = ProduceIceCandidateStats( | 
|  | timestamp_us, info.local_candidate, true, transport_id, report); | 
|  | candidate_pair_stats->remote_candidate_id = ProduceIceCandidateStats( | 
|  | timestamp_us, info.remote_candidate, false, transport_id, report); | 
|  | candidate_pair_stats->state = | 
|  | IceCandidatePairStateToRTCStatsIceCandidatePairState(info.state); | 
|  | candidate_pair_stats->priority = info.priority; | 
|  | candidate_pair_stats->nominated = info.nominated; | 
|  | // TODO(hbos): This writable is different than the spec. It goes to | 
|  | // false after a certain amount of time without a response passes. | 
|  | // https://crbug.com/633550 | 
|  | candidate_pair_stats->writable = info.writable; | 
|  | candidate_pair_stats->bytes_sent = | 
|  | static_cast<uint64_t>(info.sent_total_bytes); | 
|  | candidate_pair_stats->bytes_received = | 
|  | static_cast<uint64_t>(info.recv_total_bytes); | 
|  | candidate_pair_stats->total_round_trip_time = | 
|  | static_cast<double>(info.total_round_trip_time_ms) / | 
|  | rtc::kNumMillisecsPerSec; | 
|  | if (info.current_round_trip_time_ms) { | 
|  | candidate_pair_stats->current_round_trip_time = | 
|  | static_cast<double>(*info.current_round_trip_time_ms) / | 
|  | rtc::kNumMillisecsPerSec; | 
|  | } | 
|  | if (info.best_connection) { | 
|  | // The bandwidth estimations we have are for the selected candidate | 
|  | // pair ("info.best_connection"). | 
|  | RTC_DCHECK_GE(call_stats.send_bandwidth_bps, 0); | 
|  | RTC_DCHECK_GE(call_stats.recv_bandwidth_bps, 0); | 
|  | if (call_stats.send_bandwidth_bps > 0) { | 
|  | candidate_pair_stats->available_outgoing_bitrate = | 
|  | static_cast<double>(call_stats.send_bandwidth_bps); | 
|  | } | 
|  | if (call_stats.recv_bandwidth_bps > 0) { | 
|  | candidate_pair_stats->available_incoming_bitrate = | 
|  | static_cast<double>(call_stats.recv_bandwidth_bps); | 
|  | } | 
|  | } | 
|  | candidate_pair_stats->requests_received = | 
|  | static_cast<uint64_t>(info.recv_ping_requests); | 
|  | candidate_pair_stats->requests_sent = static_cast<uint64_t>( | 
|  | info.sent_ping_requests_before_first_response); | 
|  | candidate_pair_stats->responses_received = | 
|  | static_cast<uint64_t>(info.recv_ping_responses); | 
|  | candidate_pair_stats->responses_sent = | 
|  | static_cast<uint64_t>(info.sent_ping_responses); | 
|  | RTC_DCHECK_GE(info.sent_ping_requests_total, | 
|  | info.sent_ping_requests_before_first_response); | 
|  | candidate_pair_stats->consent_requests_sent = static_cast<uint64_t>( | 
|  | info.sent_ping_requests_total - | 
|  | info.sent_ping_requests_before_first_response); | 
|  |  | 
|  | report->AddStats(std::move(candidate_pair_stats)); | 
|  | } | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProduceMediaStreamAndTrackStats_s( | 
|  | int64_t timestamp_us, RTCStatsReport* report) const { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | RTC_DCHECK(track_media_info_map_); | 
|  | ProduceMediaStreamStats(timestamp_us, pc_->GetSenders(), pc_->GetReceivers(), | 
|  | report); | 
|  | ProduceSenderMediaTrackStats(timestamp_us, *track_media_info_map_, | 
|  | pc_->GetSenders(), report); | 
|  | ProduceReceiverMediaTrackStats(timestamp_us, *track_media_info_map_, | 
|  | pc_->GetReceivers(), report); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProducePeerConnectionStats_s( | 
|  | int64_t timestamp_us, RTCStatsReport* report) const { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | std::unique_ptr<RTCPeerConnectionStats> stats( | 
|  | new RTCPeerConnectionStats("RTCPeerConnection", timestamp_us)); | 
|  | stats->data_channels_opened = internal_record_.data_channels_opened; | 
|  | stats->data_channels_closed = internal_record_.data_channels_closed; | 
|  | report->AddStats(std::move(stats)); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProduceRTPStreamStats_n( | 
|  | int64_t timestamp_us, | 
|  | const SessionStats& session_stats, | 
|  | const ChannelNamePairs& channel_name_pairs, | 
|  | const TrackMediaInfoMap& track_media_info_map, | 
|  | RTCStatsReport* report) const { | 
|  | RTC_DCHECK(network_thread_->IsCurrent()); | 
|  |  | 
|  | // Audio | 
|  | if (track_media_info_map.voice_media_info()) { | 
|  | RTC_DCHECK(channel_name_pairs.voice); | 
|  | const std::string& transport_name = | 
|  | (*channel_name_pairs.voice).transport_name; | 
|  | std::string transport_id = RTCTransportStatsIDFromTransportChannel( | 
|  | transport_name, cricket::ICE_CANDIDATE_COMPONENT_RTP); | 
|  | // Inbound | 
|  | for (const cricket::VoiceReceiverInfo& voice_receiver_info : | 
|  | track_media_info_map.voice_media_info()->receivers) { | 
|  | if (!voice_receiver_info.connected()) | 
|  | continue; | 
|  |  | 
|  | std::unique_ptr<RTCInboundRTPStreamStats> inbound_audio( | 
|  | new RTCInboundRTPStreamStats(RTCInboundRTPStreamStatsIDFromSSRC( | 
|  | true, voice_receiver_info.ssrc()), | 
|  | timestamp_us)); | 
|  | SetInboundRTPStreamStatsFromVoiceReceiverInfo(voice_receiver_info, | 
|  | inbound_audio.get()); | 
|  | // TODO(hta): This lookup should look for the sender, not the track. | 
|  | rtc::scoped_refptr<AudioTrackInterface> audio_track = | 
|  | track_media_info_map_->GetAudioTrack(voice_receiver_info); | 
|  | if (audio_track) { | 
|  | RTC_DCHECK(track_to_id_.find(audio_track.get()) != track_to_id_.end()); | 
|  | inbound_audio | 
|  | ->track_id = RTCMediaStreamTrackStatsIDFromDirectionAndAttachment( | 
|  | kReceiver, | 
|  | track_media_info_map_->GetAttachmentIdByTrack(audio_track).value()); | 
|  | } | 
|  | inbound_audio->transport_id = transport_id; | 
|  | report->AddStats(std::move(inbound_audio)); | 
|  | } | 
|  | // Outbound | 
|  | for (const cricket::VoiceSenderInfo& voice_sender_info : | 
|  | track_media_info_map.voice_media_info()->senders) { | 
|  | if (!voice_sender_info.connected()) | 
|  | continue; | 
|  | std::unique_ptr<RTCOutboundRTPStreamStats> outbound_audio( | 
|  | new RTCOutboundRTPStreamStats( | 
|  | RTCOutboundRTPStreamStatsIDFromSSRC( | 
|  | true, voice_sender_info.ssrc()), | 
|  | timestamp_us)); | 
|  | SetOutboundRTPStreamStatsFromVoiceSenderInfo( | 
|  | voice_sender_info, outbound_audio.get()); | 
|  | rtc::scoped_refptr<AudioTrackInterface> audio_track = | 
|  | track_media_info_map_->GetAudioTrack(voice_sender_info); | 
|  | if (audio_track) { | 
|  | RTC_DCHECK(track_to_id_.find(audio_track.get()) != track_to_id_.end()); | 
|  | outbound_audio | 
|  | ->track_id = RTCMediaStreamTrackStatsIDFromDirectionAndAttachment( | 
|  | kSender, | 
|  | track_media_info_map.GetAttachmentIdByTrack(audio_track).value()); | 
|  | } | 
|  | outbound_audio->transport_id = transport_id; | 
|  | report->AddStats(std::move(outbound_audio)); | 
|  | } | 
|  | } | 
|  | // Video | 
|  | if (track_media_info_map.video_media_info()) { | 
|  | RTC_DCHECK(channel_name_pairs.video); | 
|  | const std::string& transport_name = | 
|  | (*channel_name_pairs.video).transport_name; | 
|  | std::string transport_id = RTCTransportStatsIDFromTransportChannel( | 
|  | transport_name, cricket::ICE_CANDIDATE_COMPONENT_RTP); | 
|  | // Inbound | 
|  | for (const cricket::VideoReceiverInfo& video_receiver_info : | 
|  | track_media_info_map.video_media_info()->receivers) { | 
|  | // TODO(nisse): SSRC == 0 currently means none. Delete check when that | 
|  | // is fixed. | 
|  | if (!video_receiver_info.connected()) | 
|  | continue; | 
|  | std::unique_ptr<RTCInboundRTPStreamStats> inbound_video( | 
|  | new RTCInboundRTPStreamStats( | 
|  | RTCInboundRTPStreamStatsIDFromSSRC( | 
|  | false, video_receiver_info.ssrc()), | 
|  | timestamp_us)); | 
|  | SetInboundRTPStreamStatsFromVideoReceiverInfo( | 
|  | video_receiver_info, inbound_video.get()); | 
|  | rtc::scoped_refptr<VideoTrackInterface> video_track = | 
|  | track_media_info_map_->GetVideoTrack(video_receiver_info); | 
|  | if (video_track) { | 
|  | RTC_DCHECK(track_to_id_.find(video_track.get()) != track_to_id_.end()); | 
|  | inbound_video | 
|  | ->track_id = RTCMediaStreamTrackStatsIDFromDirectionAndAttachment( | 
|  | kReceiver, | 
|  | track_media_info_map_->GetAttachmentIdByTrack(video_track).value()); | 
|  | } | 
|  | inbound_video->transport_id = transport_id; | 
|  | report->AddStats(std::move(inbound_video)); | 
|  | } | 
|  | // Outbound | 
|  | for (const cricket::VideoSenderInfo& video_sender_info : | 
|  | track_media_info_map.video_media_info()->senders) { | 
|  | if (!video_sender_info.connected()) | 
|  | continue; | 
|  | std::unique_ptr<RTCOutboundRTPStreamStats> outbound_video( | 
|  | new RTCOutboundRTPStreamStats(RTCOutboundRTPStreamStatsIDFromSSRC( | 
|  | false, video_sender_info.ssrc()), | 
|  | timestamp_us)); | 
|  | SetOutboundRTPStreamStatsFromVideoSenderInfo( | 
|  | video_sender_info, outbound_video.get()); | 
|  | rtc::scoped_refptr<VideoTrackInterface> video_track = | 
|  | track_media_info_map_->GetVideoTrack(video_sender_info); | 
|  | if (video_track) { | 
|  | RTC_DCHECK(track_to_id_.find(video_track.get()) != track_to_id_.end()); | 
|  | outbound_video | 
|  | ->track_id = RTCMediaStreamTrackStatsIDFromDirectionAndAttachment( | 
|  | kSender, | 
|  | track_media_info_map_->GetAttachmentIdByTrack(video_track).value()); | 
|  | } | 
|  | outbound_video->transport_id = transport_id; | 
|  | report->AddStats(std::move(outbound_video)); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::ProduceTransportStats_n( | 
|  | int64_t timestamp_us, const SessionStats& session_stats, | 
|  | const std::map<std::string, CertificateStatsPair>& transport_cert_stats, | 
|  | RTCStatsReport* report) const { | 
|  | RTC_DCHECK(network_thread_->IsCurrent()); | 
|  | for (const auto& transport : session_stats.transport_stats) { | 
|  | // Get reference to RTCP channel, if it exists. | 
|  | std::string rtcp_transport_stats_id; | 
|  | for (const auto& channel_stats : transport.second.channel_stats) { | 
|  | if (channel_stats.component == | 
|  | cricket::ICE_CANDIDATE_COMPONENT_RTCP) { | 
|  | rtcp_transport_stats_id = RTCTransportStatsIDFromTransportChannel( | 
|  | transport.second.transport_name, channel_stats.component); | 
|  | break; | 
|  | } | 
|  | } | 
|  |  | 
|  | // Get reference to local and remote certificates of this transport, if they | 
|  | // exist. | 
|  | const auto& certificate_stats_it = transport_cert_stats.find( | 
|  | transport.second.transport_name); | 
|  | RTC_DCHECK(certificate_stats_it != transport_cert_stats.cend()); | 
|  | std::string local_certificate_id; | 
|  | if (certificate_stats_it->second.local) { | 
|  | local_certificate_id = RTCCertificateIDFromFingerprint( | 
|  | certificate_stats_it->second.local->fingerprint); | 
|  | } | 
|  | std::string remote_certificate_id; | 
|  | if (certificate_stats_it->second.remote) { | 
|  | remote_certificate_id = RTCCertificateIDFromFingerprint( | 
|  | certificate_stats_it->second.remote->fingerprint); | 
|  | } | 
|  |  | 
|  | // There is one transport stats for each channel. | 
|  | for (const auto& channel_stats : transport.second.channel_stats) { | 
|  | std::unique_ptr<RTCTransportStats> transport_stats( | 
|  | new RTCTransportStats( | 
|  | RTCTransportStatsIDFromTransportChannel( | 
|  | transport.second.transport_name, channel_stats.component), | 
|  | timestamp_us)); | 
|  | transport_stats->bytes_sent = 0; | 
|  | transport_stats->bytes_received = 0; | 
|  | transport_stats->dtls_state = DtlsTransportStateToRTCDtlsTransportState( | 
|  | channel_stats.dtls_state); | 
|  | for (const cricket::ConnectionInfo& info : | 
|  | channel_stats.connection_infos) { | 
|  | *transport_stats->bytes_sent += info.sent_total_bytes; | 
|  | *transport_stats->bytes_received += info.recv_total_bytes; | 
|  | if (info.best_connection) { | 
|  | transport_stats->selected_candidate_pair_id = | 
|  | RTCIceCandidatePairStatsIDFromConnectionInfo(info); | 
|  | } | 
|  | } | 
|  | if (channel_stats.component != cricket::ICE_CANDIDATE_COMPONENT_RTCP && | 
|  | !rtcp_transport_stats_id.empty()) { | 
|  | transport_stats->rtcp_transport_stats_id = rtcp_transport_stats_id; | 
|  | } | 
|  | if (!local_certificate_id.empty()) | 
|  | transport_stats->local_certificate_id = local_certificate_id; | 
|  | if (!remote_certificate_id.empty()) | 
|  | transport_stats->remote_certificate_id = remote_certificate_id; | 
|  | report->AddStats(std::move(transport_stats)); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | std::map<std::string, RTCStatsCollector::CertificateStatsPair> | 
|  | RTCStatsCollector::PrepareTransportCertificateStats_n( | 
|  | const SessionStats& session_stats) const { | 
|  | RTC_DCHECK(network_thread_->IsCurrent()); | 
|  | std::map<std::string, CertificateStatsPair> transport_cert_stats; | 
|  | for (const auto& transport_stats : session_stats.transport_stats) { | 
|  | CertificateStatsPair certificate_stats_pair; | 
|  | rtc::scoped_refptr<rtc::RTCCertificate> local_certificate; | 
|  | if (pc_->GetLocalCertificate(transport_stats.second.transport_name, | 
|  | &local_certificate)) { | 
|  | certificate_stats_pair.local = | 
|  | local_certificate->ssl_certificate().GetStats(); | 
|  | } | 
|  | std::unique_ptr<rtc::SSLCertificate> remote_certificate = | 
|  | pc_->GetRemoteSSLCertificate(transport_stats.second.transport_name); | 
|  | if (remote_certificate) { | 
|  | certificate_stats_pair.remote = remote_certificate->GetStats(); | 
|  | } | 
|  | transport_cert_stats.insert( | 
|  | std::make_pair(transport_stats.second.transport_name, | 
|  | std::move(certificate_stats_pair))); | 
|  | } | 
|  | return transport_cert_stats; | 
|  | } | 
|  |  | 
|  | std::unique_ptr<TrackMediaInfoMap> | 
|  | RTCStatsCollector::PrepareTrackMediaInfoMap_s() const { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | std::unique_ptr<cricket::VoiceMediaInfo> voice_media_info; | 
|  | if (pc_->voice_channel()) { | 
|  | voice_media_info.reset(new cricket::VoiceMediaInfo()); | 
|  | if (!pc_->voice_channel()->GetStats(voice_media_info.get())) { | 
|  | voice_media_info.reset(); | 
|  | } | 
|  | } | 
|  | std::unique_ptr<cricket::VideoMediaInfo> video_media_info; | 
|  | if (pc_->video_channel()) { | 
|  | video_media_info.reset(new cricket::VideoMediaInfo()); | 
|  | if (!pc_->video_channel()->GetStats(video_media_info.get())) { | 
|  | video_media_info.reset(); | 
|  | } | 
|  | } | 
|  | std::unique_ptr<TrackMediaInfoMap> track_media_info_map( | 
|  | new TrackMediaInfoMap(std::move(voice_media_info), | 
|  | std::move(video_media_info), | 
|  | pc_->GetSenders(), | 
|  | pc_->GetReceivers())); | 
|  | return track_media_info_map; | 
|  | } | 
|  |  | 
|  | std::map<MediaStreamTrackInterface*, std::string> | 
|  | RTCStatsCollector::PrepareTrackToID_s() const { | 
|  | // TODO(hta): Remove this method, and vector its callers via | 
|  | // senders / receivers instead. | 
|  | // It ignores tracks that are multiply connected to the PC. | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | std::map<MediaStreamTrackInterface*, std::string> track_to_id; | 
|  | for (auto sender : pc_->GetSenders()) { | 
|  | auto track = sender->track(); | 
|  | if (track) | 
|  | track_to_id[track.get()] = track->id(); | 
|  | } | 
|  | for (auto receiver : pc_->GetReceivers()) { | 
|  | auto track = receiver->track(); | 
|  | if (track) | 
|  | track_to_id[track.get()] = track->id(); | 
|  | } | 
|  | return track_to_id; | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::OnDataChannelCreated(DataChannel* channel) { | 
|  | channel->SignalOpened.connect(this, &RTCStatsCollector::OnDataChannelOpened); | 
|  | channel->SignalClosed.connect(this, &RTCStatsCollector::OnDataChannelClosed); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::OnDataChannelOpened(DataChannel* channel) { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | bool result = internal_record_.opened_data_channels.insert( | 
|  | reinterpret_cast<uintptr_t>(channel)).second; | 
|  | ++internal_record_.data_channels_opened; | 
|  | RTC_DCHECK(result); | 
|  | } | 
|  |  | 
|  | void RTCStatsCollector::OnDataChannelClosed(DataChannel* channel) { | 
|  | RTC_DCHECK(signaling_thread_->IsCurrent()); | 
|  | // Only channels that have been fully opened (and have increased the | 
|  | // |data_channels_opened_| counter) increase the closed counter. | 
|  | if (internal_record_.opened_data_channels.erase( | 
|  | reinterpret_cast<uintptr_t>(channel))) { | 
|  | ++internal_record_.data_channels_closed; | 
|  | } | 
|  | } | 
|  |  | 
|  | const char* CandidateTypeToRTCIceCandidateTypeForTesting( | 
|  | const std::string& type) { | 
|  | return CandidateTypeToRTCIceCandidateType(type); | 
|  | } | 
|  |  | 
|  | const char* DataStateToRTCDataChannelStateForTesting( | 
|  | DataChannelInterface::DataState state) { | 
|  | return DataStateToRTCDataChannelState(state); | 
|  | } | 
|  |  | 
|  | }  // namespace webrtc |