Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 814 insertions, 0 deletions

diff --git a/third_party/libwebrtc/logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.cc b/third_party/libwebrtc/logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.cc
new file mode 100644
index 0000000000..5619827246
--- /dev/null
+++ b/third_party/libwebrtc/logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.cc
@@ -0,0 +1,814 @@
+/*
+ *  Copyright (c) 2017 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 "logging/rtc_event_log/encoder/rtc_event_log_encoder_legacy.h"
+
+#include <string.h>
+
+#include <vector>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+#include "api/network_state_predictor.h"
+#include "api/rtp_headers.h"
+#include "api/rtp_parameters.h"
+#include "api/transport/network_types.h"
+#include "logging/rtc_event_log/events/rtc_event_alr_state.h"
+#include "logging/rtc_event_log/events/rtc_event_audio_network_adaptation.h"
+#include "logging/rtc_event_log/events/rtc_event_audio_playout.h"
+#include "logging/rtc_event_log/events/rtc_event_audio_receive_stream_config.h"
+#include "logging/rtc_event_log/events/rtc_event_audio_send_stream_config.h"
+#include "logging/rtc_event_log/events/rtc_event_bwe_update_delay_based.h"
+#include "logging/rtc_event_log/events/rtc_event_bwe_update_loss_based.h"
+#include "logging/rtc_event_log/events/rtc_event_ice_candidate_pair.h"
+#include "logging/rtc_event_log/events/rtc_event_ice_candidate_pair_config.h"
+#include "logging/rtc_event_log/events/rtc_event_probe_cluster_created.h"
+#include "logging/rtc_event_log/events/rtc_event_probe_result_failure.h"
+#include "logging/rtc_event_log/events/rtc_event_probe_result_success.h"
+#include "logging/rtc_event_log/events/rtc_event_remote_estimate.h"
+#include "logging/rtc_event_log/events/rtc_event_rtcp_packet_incoming.h"
+#include "logging/rtc_event_log/events/rtc_event_rtcp_packet_outgoing.h"
+#include "logging/rtc_event_log/events/rtc_event_rtp_packet_incoming.h"
+#include "logging/rtc_event_log/events/rtc_event_rtp_packet_outgoing.h"
+#include "logging/rtc_event_log/events/rtc_event_video_receive_stream_config.h"
+#include "logging/rtc_event_log/events/rtc_event_video_send_stream_config.h"
+#include "logging/rtc_event_log/rtc_stream_config.h"
+#include "modules/audio_coding/audio_network_adaptor/include/audio_network_adaptor_config.h"
+#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/app.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/bye.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/common_header.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/extended_reports.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/psfb.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/receiver_report.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/rtpfb.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/sdes.h"
+#include "modules/rtp_rtcp/source/rtcp_packet/sender_report.h"
+#include "modules/rtp_rtcp/source/rtp_packet.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/ignore_wundef.h"
+#include "rtc_base/logging.h"
+
+// *.pb.h files are generated at build-time by the protobuf compiler.
+RTC_PUSH_IGNORING_WUNDEF()
+#ifdef WEBRTC_ANDROID_PLATFORM_BUILD
+#include "external/webrtc/webrtc/logging/rtc_event_log/rtc_event_log.pb.h"
+#else
+#include "logging/rtc_event_log/rtc_event_log.pb.h"
+#endif
+RTC_POP_IGNORING_WUNDEF()
+
+namespace webrtc {
+
+namespace {
+rtclog::DelayBasedBweUpdate::DetectorState ConvertDetectorState(
+    BandwidthUsage state) {
+  switch (state) {
+    case BandwidthUsage::kBwNormal:
+      return rtclog::DelayBasedBweUpdate::BWE_NORMAL;
+    case BandwidthUsage::kBwUnderusing:
+      return rtclog::DelayBasedBweUpdate::BWE_UNDERUSING;
+    case BandwidthUsage::kBwOverusing:
+      return rtclog::DelayBasedBweUpdate::BWE_OVERUSING;
+    case BandwidthUsage::kLast:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::DelayBasedBweUpdate::BWE_NORMAL;
+}
+
+rtclog::BweProbeResult::ResultType ConvertProbeResultType(
+    ProbeFailureReason failure_reason) {
+  switch (failure_reason) {
+    case ProbeFailureReason::kInvalidSendReceiveInterval:
+      return rtclog::BweProbeResult::INVALID_SEND_RECEIVE_INTERVAL;
+    case ProbeFailureReason::kInvalidSendReceiveRatio:
+      return rtclog::BweProbeResult::INVALID_SEND_RECEIVE_RATIO;
+    case ProbeFailureReason::kTimeout:
+      return rtclog::BweProbeResult::TIMEOUT;
+    case ProbeFailureReason::kLast:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::BweProbeResult::SUCCESS;
+}
+
+rtclog::VideoReceiveConfig_RtcpMode ConvertRtcpMode(RtcpMode rtcp_mode) {
+  switch (rtcp_mode) {
+    case RtcpMode::kCompound:
+      return rtclog::VideoReceiveConfig::RTCP_COMPOUND;
+    case RtcpMode::kReducedSize:
+      return rtclog::VideoReceiveConfig::RTCP_REDUCEDSIZE;
+    case RtcpMode::kOff:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::VideoReceiveConfig::RTCP_COMPOUND;
+}
+
+rtclog::IceCandidatePairConfig::IceCandidatePairConfigType
+ConvertIceCandidatePairConfigType(IceCandidatePairConfigType type) {
+  switch (type) {
+    case IceCandidatePairConfigType::kAdded:
+      return rtclog::IceCandidatePairConfig::ADDED;
+    case IceCandidatePairConfigType::kUpdated:
+      return rtclog::IceCandidatePairConfig::UPDATED;
+    case IceCandidatePairConfigType::kDestroyed:
+      return rtclog::IceCandidatePairConfig::DESTROYED;
+    case IceCandidatePairConfigType::kSelected:
+      return rtclog::IceCandidatePairConfig::SELECTED;
+    case IceCandidatePairConfigType::kNumValues:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::IceCandidatePairConfig::ADDED;
+}
+
+rtclog::IceCandidatePairConfig::IceCandidateType ConvertIceCandidateType(
+    IceCandidateType type) {
+  switch (type) {
+    case IceCandidateType::kUnknown:
+      return rtclog::IceCandidatePairConfig::UNKNOWN_CANDIDATE_TYPE;
+    case IceCandidateType::kLocal:
+      return rtclog::IceCandidatePairConfig::LOCAL;
+    case IceCandidateType::kStun:
+      return rtclog::IceCandidatePairConfig::STUN;
+    case IceCandidateType::kPrflx:
+      return rtclog::IceCandidatePairConfig::PRFLX;
+    case IceCandidateType::kRelay:
+      return rtclog::IceCandidatePairConfig::RELAY;
+    case IceCandidateType::kNumValues:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::IceCandidatePairConfig::UNKNOWN_CANDIDATE_TYPE;
+}
+
+rtclog::IceCandidatePairConfig::Protocol ConvertIceCandidatePairProtocol(
+    IceCandidatePairProtocol protocol) {
+  switch (protocol) {
+    case IceCandidatePairProtocol::kUnknown:
+      return rtclog::IceCandidatePairConfig::UNKNOWN_PROTOCOL;
+    case IceCandidatePairProtocol::kUdp:
+      return rtclog::IceCandidatePairConfig::UDP;
+    case IceCandidatePairProtocol::kTcp:
+      return rtclog::IceCandidatePairConfig::TCP;
+    case IceCandidatePairProtocol::kSsltcp:
+      return rtclog::IceCandidatePairConfig::SSLTCP;
+    case IceCandidatePairProtocol::kTls:
+      return rtclog::IceCandidatePairConfig::TLS;
+    case IceCandidatePairProtocol::kNumValues:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::IceCandidatePairConfig::UNKNOWN_PROTOCOL;
+}
+
+rtclog::IceCandidatePairConfig::AddressFamily
+ConvertIceCandidatePairAddressFamily(
+    IceCandidatePairAddressFamily address_family) {
+  switch (address_family) {
+    case IceCandidatePairAddressFamily::kUnknown:
+      return rtclog::IceCandidatePairConfig::UNKNOWN_ADDRESS_FAMILY;
+    case IceCandidatePairAddressFamily::kIpv4:
+      return rtclog::IceCandidatePairConfig::IPV4;
+    case IceCandidatePairAddressFamily::kIpv6:
+      return rtclog::IceCandidatePairConfig::IPV6;
+    case IceCandidatePairAddressFamily::kNumValues:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::IceCandidatePairConfig::UNKNOWN_ADDRESS_FAMILY;
+}
+
+rtclog::IceCandidatePairConfig::NetworkType ConvertIceCandidateNetworkType(
+    IceCandidateNetworkType network_type) {
+  switch (network_type) {
+    case IceCandidateNetworkType::kUnknown:
+      return rtclog::IceCandidatePairConfig::UNKNOWN_NETWORK_TYPE;
+    case IceCandidateNetworkType::kEthernet:
+      return rtclog::IceCandidatePairConfig::ETHERNET;
+    case IceCandidateNetworkType::kLoopback:
+      return rtclog::IceCandidatePairConfig::LOOPBACK;
+    case IceCandidateNetworkType::kWifi:
+      return rtclog::IceCandidatePairConfig::WIFI;
+    case IceCandidateNetworkType::kVpn:
+      return rtclog::IceCandidatePairConfig::VPN;
+    case IceCandidateNetworkType::kCellular:
+      return rtclog::IceCandidatePairConfig::CELLULAR;
+    case IceCandidateNetworkType::kNumValues:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::IceCandidatePairConfig::UNKNOWN_NETWORK_TYPE;
+}
+
+rtclog::IceCandidatePairEvent::IceCandidatePairEventType
+ConvertIceCandidatePairEventType(IceCandidatePairEventType type) {
+  switch (type) {
+    case IceCandidatePairEventType::kCheckSent:
+      return rtclog::IceCandidatePairEvent::CHECK_SENT;
+    case IceCandidatePairEventType::kCheckReceived:
+      return rtclog::IceCandidatePairEvent::CHECK_RECEIVED;
+    case IceCandidatePairEventType::kCheckResponseSent:
+      return rtclog::IceCandidatePairEvent::CHECK_RESPONSE_SENT;
+    case IceCandidatePairEventType::kCheckResponseReceived:
+      return rtclog::IceCandidatePairEvent::CHECK_RESPONSE_RECEIVED;
+    case IceCandidatePairEventType::kNumValues:
+      RTC_DCHECK_NOTREACHED();
+  }
+  RTC_DCHECK_NOTREACHED();
+  return rtclog::IceCandidatePairEvent::CHECK_SENT;
+}
+
+}  // namespace
+
+std::string RtcEventLogEncoderLegacy::EncodeLogStart(int64_t timestamp_us,
+                                                     int64_t utc_time_us) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(timestamp_us);
+  rtclog_event.set_type(rtclog::Event::LOG_START);
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeLogEnd(int64_t timestamp_us) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(timestamp_us);
+  rtclog_event.set_type(rtclog::Event::LOG_END);
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeBatch(
+    std::deque<std::unique_ptr<RtcEvent>>::const_iterator begin,
+    std::deque<std::unique_ptr<RtcEvent>>::const_iterator end) {
+  std::string encoded_output;
+  for (auto it = begin; it != end; ++it) {
+    // TODO(terelius): Can we avoid the slight inefficiency of reallocating the
+    // string?
+    RTC_CHECK(it->get() != nullptr);
+    encoded_output += Encode(**it);
+  }
+  return encoded_output;
+}
+
+std::string RtcEventLogEncoderLegacy::Encode(const RtcEvent& event) {
+  switch (event.GetType()) {
+    case RtcEvent::Type::AudioNetworkAdaptation: {
+      auto& rtc_event =
+          static_cast<const RtcEventAudioNetworkAdaptation&>(event);
+      return EncodeAudioNetworkAdaptation(rtc_event);
+    }
+
+    case RtcEvent::Type::AlrStateEvent: {
+      auto& rtc_event = static_cast<const RtcEventAlrState&>(event);
+      return EncodeAlrState(rtc_event);
+    }
+
+    case RtcEvent::Type::AudioPlayout: {
+      auto& rtc_event = static_cast<const RtcEventAudioPlayout&>(event);
+      return EncodeAudioPlayout(rtc_event);
+    }
+
+    case RtcEvent::Type::AudioReceiveStreamConfig: {
+      auto& rtc_event =
+          static_cast<const RtcEventAudioReceiveStreamConfig&>(event);
+      return EncodeAudioReceiveStreamConfig(rtc_event);
+    }
+
+    case RtcEvent::Type::AudioSendStreamConfig: {
+      auto& rtc_event =
+          static_cast<const RtcEventAudioSendStreamConfig&>(event);
+      return EncodeAudioSendStreamConfig(rtc_event);
+    }
+
+    case RtcEvent::Type::BweUpdateDelayBased: {
+      auto& rtc_event = static_cast<const RtcEventBweUpdateDelayBased&>(event);
+      return EncodeBweUpdateDelayBased(rtc_event);
+    }
+
+    case RtcEvent::Type::BweUpdateLossBased: {
+      auto& rtc_event = static_cast<const RtcEventBweUpdateLossBased&>(event);
+      return EncodeBweUpdateLossBased(rtc_event);
+    }
+
+    case RtcEvent::Type::DtlsTransportState: {
+      return "";
+    }
+
+    case RtcEvent::Type::DtlsWritableState: {
+      return "";
+    }
+
+    case RtcEvent::Type::IceCandidatePairConfig: {
+      auto& rtc_event =
+          static_cast<const RtcEventIceCandidatePairConfig&>(event);
+      return EncodeIceCandidatePairConfig(rtc_event);
+    }
+
+    case RtcEvent::Type::IceCandidatePairEvent: {
+      auto& rtc_event = static_cast<const RtcEventIceCandidatePair&>(event);
+      return EncodeIceCandidatePairEvent(rtc_event);
+    }
+
+    case RtcEvent::Type::ProbeClusterCreated: {
+      auto& rtc_event = static_cast<const RtcEventProbeClusterCreated&>(event);
+      return EncodeProbeClusterCreated(rtc_event);
+    }
+
+    case RtcEvent::Type::ProbeResultFailure: {
+      auto& rtc_event = static_cast<const RtcEventProbeResultFailure&>(event);
+      return EncodeProbeResultFailure(rtc_event);
+    }
+
+    case RtcEvent::Type::ProbeResultSuccess: {
+      auto& rtc_event = static_cast<const RtcEventProbeResultSuccess&>(event);
+      return EncodeProbeResultSuccess(rtc_event);
+    }
+
+    case RtcEvent::Type::RemoteEstimateEvent: {
+      auto& rtc_event = static_cast<const RtcEventRemoteEstimate&>(event);
+      return EncodeRemoteEstimate(rtc_event);
+    }
+
+    case RtcEvent::Type::RtcpPacketIncoming: {
+      auto& rtc_event = static_cast<const RtcEventRtcpPacketIncoming&>(event);
+      return EncodeRtcpPacketIncoming(rtc_event);
+    }
+
+    case RtcEvent::Type::RtcpPacketOutgoing: {
+      auto& rtc_event = static_cast<const RtcEventRtcpPacketOutgoing&>(event);
+      return EncodeRtcpPacketOutgoing(rtc_event);
+    }
+
+    case RtcEvent::Type::RtpPacketIncoming: {
+      auto& rtc_event = static_cast<const RtcEventRtpPacketIncoming&>(event);
+      return EncodeRtpPacketIncoming(rtc_event);
+    }
+
+    case RtcEvent::Type::RtpPacketOutgoing: {
+      auto& rtc_event = static_cast<const RtcEventRtpPacketOutgoing&>(event);
+      return EncodeRtpPacketOutgoing(rtc_event);
+    }
+
+    case RtcEvent::Type::VideoReceiveStreamConfig: {
+      auto& rtc_event =
+          static_cast<const RtcEventVideoReceiveStreamConfig&>(event);
+      return EncodeVideoReceiveStreamConfig(rtc_event);
+    }
+
+    case RtcEvent::Type::VideoSendStreamConfig: {
+      auto& rtc_event =
+          static_cast<const RtcEventVideoSendStreamConfig&>(event);
+      return EncodeVideoSendStreamConfig(rtc_event);
+    }
+    case RtcEvent::Type::BeginV3Log:
+    case RtcEvent::Type::EndV3Log:
+      // These special events are written as part of starting
+      // and stopping the log, and only as part of version 3 of the format.
+      RTC_DCHECK_NOTREACHED();
+      break;
+    case RtcEvent::Type::FakeEvent:
+      // Fake event used for unit test.
+      RTC_DCHECK_NOTREACHED();
+      break;
+    case RtcEvent::Type::RouteChangeEvent:
+    case RtcEvent::Type::GenericPacketReceived:
+    case RtcEvent::Type::GenericPacketSent:
+    case RtcEvent::Type::GenericAckReceived:
+    case RtcEvent::Type::FrameDecoded:
+    case RtcEvent::Type::NetEqSetMinimumDelay:
+      // These are unsupported in the old format, but shouldn't crash.
+      return "";
+  }
+
+  int event_type = static_cast<int>(event.GetType());
+  RTC_DCHECK_NOTREACHED() << "Unknown event type (" << event_type << ")";
+  return "";
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeAlrState(
+    const RtcEventAlrState& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::ALR_STATE_EVENT);
+
+  auto* alr_state = rtclog_event.mutable_alr_state();
+  alr_state->set_in_alr(event.in_alr());
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeAudioNetworkAdaptation(
+    const RtcEventAudioNetworkAdaptation& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::AUDIO_NETWORK_ADAPTATION_EVENT);
+
+  auto* audio_network_adaptation =
+      rtclog_event.mutable_audio_network_adaptation();
+  if (event.config().bitrate_bps)
+    audio_network_adaptation->set_bitrate_bps(*event.config().bitrate_bps);
+  if (event.config().frame_length_ms)
+    audio_network_adaptation->set_frame_length_ms(
+        *event.config().frame_length_ms);
+  if (event.config().uplink_packet_loss_fraction) {
+    audio_network_adaptation->set_uplink_packet_loss_fraction(
+        *event.config().uplink_packet_loss_fraction);
+  }
+  if (event.config().enable_fec)
+    audio_network_adaptation->set_enable_fec(*event.config().enable_fec);
+  if (event.config().enable_dtx)
+    audio_network_adaptation->set_enable_dtx(*event.config().enable_dtx);
+  if (event.config().num_channels)
+    audio_network_adaptation->set_num_channels(*event.config().num_channels);
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeAudioPlayout(
+    const RtcEventAudioPlayout& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::AUDIO_PLAYOUT_EVENT);
+
+  auto* playout_event = rtclog_event.mutable_audio_playout_event();
+  playout_event->set_local_ssrc(event.ssrc());
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeAudioReceiveStreamConfig(
+    const RtcEventAudioReceiveStreamConfig& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::AUDIO_RECEIVER_CONFIG_EVENT);
+
+  rtclog::AudioReceiveConfig* receiver_config =
+      rtclog_event.mutable_audio_receiver_config();
+  receiver_config->set_remote_ssrc(event.config().remote_ssrc);
+  receiver_config->set_local_ssrc(event.config().local_ssrc);
+
+  for (const auto& e : event.config().rtp_extensions) {
+    rtclog::RtpHeaderExtension* extension =
+        receiver_config->add_header_extensions();
+    extension->set_name(e.uri);
+    extension->set_id(e.id);
+  }
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeAudioSendStreamConfig(
+    const RtcEventAudioSendStreamConfig& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::AUDIO_SENDER_CONFIG_EVENT);
+
+  rtclog::AudioSendConfig* sender_config =
+      rtclog_event.mutable_audio_sender_config();
+
+  sender_config->set_ssrc(event.config().local_ssrc);
+
+  for (const auto& e : event.config().rtp_extensions) {
+    rtclog::RtpHeaderExtension* extension =
+        sender_config->add_header_extensions();
+    extension->set_name(e.uri);
+    extension->set_id(e.id);
+  }
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeBweUpdateDelayBased(
+    const RtcEventBweUpdateDelayBased& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::DELAY_BASED_BWE_UPDATE);
+
+  auto* bwe_event = rtclog_event.mutable_delay_based_bwe_update();
+  bwe_event->set_bitrate_bps(event.bitrate_bps());
+  bwe_event->set_detector_state(ConvertDetectorState(event.detector_state()));
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeBweUpdateLossBased(
+    const RtcEventBweUpdateLossBased& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::LOSS_BASED_BWE_UPDATE);
+
+  auto* bwe_event = rtclog_event.mutable_loss_based_bwe_update();
+  bwe_event->set_bitrate_bps(event.bitrate_bps());
+  bwe_event->set_fraction_loss(event.fraction_loss());
+  bwe_event->set_total_packets(event.total_packets());
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeIceCandidatePairConfig(
+    const RtcEventIceCandidatePairConfig& event) {
+  rtclog::Event encoded_rtc_event;
+  encoded_rtc_event.set_timestamp_us(event.timestamp_us());
+  encoded_rtc_event.set_type(rtclog::Event::ICE_CANDIDATE_PAIR_CONFIG);
+
+  auto* encoded_ice_event =
+      encoded_rtc_event.mutable_ice_candidate_pair_config();
+  encoded_ice_event->set_config_type(
+      ConvertIceCandidatePairConfigType(event.type()));
+  encoded_ice_event->set_candidate_pair_id(event.candidate_pair_id());
+  const auto& desc = event.candidate_pair_desc();
+  encoded_ice_event->set_local_candidate_type(
+      ConvertIceCandidateType(desc.local_candidate_type));
+  encoded_ice_event->set_local_relay_protocol(
+      ConvertIceCandidatePairProtocol(desc.local_relay_protocol));
+  encoded_ice_event->set_local_network_type(
+      ConvertIceCandidateNetworkType(desc.local_network_type));
+  encoded_ice_event->set_local_address_family(
+      ConvertIceCandidatePairAddressFamily(desc.local_address_family));
+  encoded_ice_event->set_remote_candidate_type(
+      ConvertIceCandidateType(desc.remote_candidate_type));
+  encoded_ice_event->set_remote_address_family(
+      ConvertIceCandidatePairAddressFamily(desc.remote_address_family));
+  encoded_ice_event->set_candidate_pair_protocol(
+      ConvertIceCandidatePairProtocol(desc.candidate_pair_protocol));
+  return Serialize(&encoded_rtc_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeIceCandidatePairEvent(
+    const RtcEventIceCandidatePair& event) {
+  rtclog::Event encoded_rtc_event;
+  encoded_rtc_event.set_timestamp_us(event.timestamp_us());
+  encoded_rtc_event.set_type(rtclog::Event::ICE_CANDIDATE_PAIR_EVENT);
+
+  auto* encoded_ice_event =
+      encoded_rtc_event.mutable_ice_candidate_pair_event();
+  encoded_ice_event->set_event_type(
+      ConvertIceCandidatePairEventType(event.type()));
+  encoded_ice_event->set_candidate_pair_id(event.candidate_pair_id());
+  return Serialize(&encoded_rtc_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeProbeClusterCreated(
+    const RtcEventProbeClusterCreated& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::BWE_PROBE_CLUSTER_CREATED_EVENT);
+
+  auto* probe_cluster = rtclog_event.mutable_probe_cluster();
+  probe_cluster->set_id(event.id());
+  probe_cluster->set_bitrate_bps(event.bitrate_bps());
+  probe_cluster->set_min_packets(event.min_probes());
+  probe_cluster->set_min_bytes(event.min_bytes());
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeProbeResultFailure(
+    const RtcEventProbeResultFailure& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::BWE_PROBE_RESULT_EVENT);
+
+  auto* probe_result = rtclog_event.mutable_probe_result();
+  probe_result->set_id(event.id());
+  probe_result->set_result(ConvertProbeResultType(event.failure_reason()));
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeProbeResultSuccess(
+    const RtcEventProbeResultSuccess& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::BWE_PROBE_RESULT_EVENT);
+
+  auto* probe_result = rtclog_event.mutable_probe_result();
+  probe_result->set_id(event.id());
+  probe_result->set_result(rtclog::BweProbeResult::SUCCESS);
+  probe_result->set_bitrate_bps(event.bitrate_bps());
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeRemoteEstimate(
+    const RtcEventRemoteEstimate& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::REMOTE_ESTIMATE);
+
+  auto* remote_estimate = rtclog_event.mutable_remote_estimate();
+  if (event.link_capacity_lower_.IsFinite())
+    remote_estimate->set_link_capacity_lower_kbps(
+        event.link_capacity_lower_.kbps<uint32_t>());
+  if (event.link_capacity_upper_.IsFinite())
+    remote_estimate->set_link_capacity_upper_kbps(
+        event.link_capacity_upper_.kbps<uint32_t>());
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeRtcpPacketIncoming(
+    const RtcEventRtcpPacketIncoming& event) {
+  return EncodeRtcpPacket(event.timestamp_us(), event.packet(), true);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeRtcpPacketOutgoing(
+    const RtcEventRtcpPacketOutgoing& event) {
+  return EncodeRtcpPacket(event.timestamp_us(), event.packet(), false);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeRtpPacketIncoming(
+    const RtcEventRtpPacketIncoming& event) {
+  return EncodeRtpPacket(event.timestamp_us(), event.RawHeader(),
+                         event.packet_length(), PacedPacketInfo::kNotAProbe,
+                         true);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeRtpPacketOutgoing(
+    const RtcEventRtpPacketOutgoing& event) {
+  return EncodeRtpPacket(event.timestamp_us(), event.RawHeader(),
+                         event.packet_length(), event.probe_cluster_id(),
+                         false);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeVideoReceiveStreamConfig(
+    const RtcEventVideoReceiveStreamConfig& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::VIDEO_RECEIVER_CONFIG_EVENT);
+
+  rtclog::VideoReceiveConfig* receiver_config =
+      rtclog_event.mutable_video_receiver_config();
+  receiver_config->set_remote_ssrc(event.config().remote_ssrc);
+  receiver_config->set_local_ssrc(event.config().local_ssrc);
+
+  // TODO(perkj): Add field for rsid.
+  receiver_config->set_rtcp_mode(ConvertRtcpMode(event.config().rtcp_mode));
+  receiver_config->set_remb(event.config().remb);
+
+  for (const auto& e : event.config().rtp_extensions) {
+    rtclog::RtpHeaderExtension* extension =
+        receiver_config->add_header_extensions();
+    extension->set_name(e.uri);
+    extension->set_id(e.id);
+  }
+
+  for (const auto& d : event.config().codecs) {
+    rtclog::DecoderConfig* decoder = receiver_config->add_decoders();
+    decoder->set_name(d.payload_name);
+    decoder->set_payload_type(d.payload_type);
+    if (d.rtx_payload_type != 0) {
+      rtclog::RtxMap* rtx = receiver_config->add_rtx_map();
+      rtx->set_payload_type(d.payload_type);
+      rtx->mutable_config()->set_rtx_ssrc(event.config().rtx_ssrc);
+      rtx->mutable_config()->set_rtx_payload_type(d.rtx_payload_type);
+    }
+  }
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeVideoSendStreamConfig(
+    const RtcEventVideoSendStreamConfig& event) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(event.timestamp_us());
+  rtclog_event.set_type(rtclog::Event::VIDEO_SENDER_CONFIG_EVENT);
+
+  rtclog::VideoSendConfig* sender_config =
+      rtclog_event.mutable_video_sender_config();
+
+  // TODO(perkj): rtclog::VideoSendConfig should only contain one SSRC.
+  sender_config->add_ssrcs(event.config().local_ssrc);
+  if (event.config().rtx_ssrc != 0) {
+    sender_config->add_rtx_ssrcs(event.config().rtx_ssrc);
+  }
+
+  for (const auto& e : event.config().rtp_extensions) {
+    rtclog::RtpHeaderExtension* extension =
+        sender_config->add_header_extensions();
+    extension->set_name(e.uri);
+    extension->set_id(e.id);
+  }
+
+  // TODO(perkj): rtclog::VideoSendConfig should contain many possible codec
+  // configurations.
+  for (const auto& codec : event.config().codecs) {
+    sender_config->set_rtx_payload_type(codec.rtx_payload_type);
+    rtclog::EncoderConfig* encoder = sender_config->mutable_encoder();
+    encoder->set_name(codec.payload_name);
+    encoder->set_payload_type(codec.payload_type);
+
+    if (event.config().codecs.size() > 1) {
+      RTC_LOG(LS_WARNING)
+          << "LogVideoSendStreamConfig currently only supports one "
+             "codec. Logging codec :"
+          << codec.payload_name;
+      break;
+    }
+  }
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeRtcpPacket(
+    int64_t timestamp_us,
+    const rtc::Buffer& packet,
+    bool is_incoming) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(timestamp_us);
+  rtclog_event.set_type(rtclog::Event::RTCP_EVENT);
+  rtclog_event.mutable_rtcp_packet()->set_incoming(is_incoming);
+
+  rtcp::CommonHeader header;
+  const uint8_t* block_begin = packet.data();
+  const uint8_t* packet_end = packet.data() + packet.size();
+  std::vector<uint8_t> buffer(packet.size());
+  uint32_t buffer_length = 0;
+  while (block_begin < packet_end) {
+    if (!header.Parse(block_begin, packet_end - block_begin)) {
+      break;  // Incorrect message header.
+    }
+    const uint8_t* next_block = header.NextPacket();
+    uint32_t block_size = next_block - block_begin;
+    switch (header.type()) {
+      case rtcp::Bye::kPacketType:
+      case rtcp::ExtendedReports::kPacketType:
+      case rtcp::Psfb::kPacketType:
+      case rtcp::ReceiverReport::kPacketType:
+      case rtcp::Rtpfb::kPacketType:
+      case rtcp::SenderReport::kPacketType:
+        // We log sender reports, receiver reports, bye messages, third-party
+        // loss reports, payload-specific feedback and extended reports.
+        memcpy(buffer.data() + buffer_length, block_begin, block_size);
+        buffer_length += block_size;
+        break;
+      case rtcp::App::kPacketType:
+      case rtcp::Sdes::kPacketType:
+      default:
+        // We don't log sender descriptions, application defined messages
+        // or message blocks of unknown type.
+        break;
+    }
+
+    block_begin += block_size;
+  }
+  rtclog_event.mutable_rtcp_packet()->set_packet_data(buffer.data(),
+                                                      buffer_length);
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::EncodeRtpPacket(
+    int64_t timestamp_us,
+    rtc::ArrayView<const uint8_t> header,
+    size_t packet_length,
+    int probe_cluster_id,
+    bool is_incoming) {
+  rtclog::Event rtclog_event;
+  rtclog_event.set_timestamp_us(timestamp_us);
+  rtclog_event.set_type(rtclog::Event::RTP_EVENT);
+
+  rtclog_event.mutable_rtp_packet()->set_incoming(is_incoming);
+  rtclog_event.mutable_rtp_packet()->set_packet_length(packet_length);
+  rtclog_event.mutable_rtp_packet()->set_header(header.data(), header.size());
+  if (probe_cluster_id != PacedPacketInfo::kNotAProbe) {
+    RTC_DCHECK(!is_incoming);
+    rtclog_event.mutable_rtp_packet()->set_probe_cluster_id(probe_cluster_id);
+  }
+
+  return Serialize(&rtclog_event);
+}
+
+std::string RtcEventLogEncoderLegacy::Serialize(rtclog::Event* event) {
+  // Even though we're only serializing a single event during this call, what
+  // we intend to get is a list of events, with a tag and length preceding
+  // each actual event. To produce that, we serialize a list of a single event.
+  // If we later concatenate several results from this function, the result will
+  // be a proper concatenation of all those events.
+
+  rtclog::EventStream event_stream;
+  event_stream.add_stream();
+
+  // As a tweak, we swap the new event into the event-stream, write that to
+  // file, then swap back. This saves on some copying, while making sure that
+  // the caller wouldn't be surprised by Serialize() modifying the object.
+  rtclog::Event* output_event = event_stream.mutable_stream(0);
+  output_event->Swap(event);
+
+  std::string output_string = event_stream.SerializeAsString();
+  RTC_DCHECK(!output_string.empty());
+
+  // When the function returns, the original Event will be unchanged.
+  output_event->Swap(event);
+
+  return output_string;
+}
+
+}  // namespace webrtc