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/*
* Copyright 2004 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/peerconnectionfactory.h"
#include <utility>
#include <vector>
#include "absl/memory/memory.h"
#include "api/fec_controller.h"
#include "api/media_transport_interface.h"
#include "api/mediaconstraintsinterface.h"
#include "api/mediastreamproxy.h"
#include "api/mediastreamtrackproxy.h"
#include "api/peerconnectionfactoryproxy.h"
#include "api/peerconnectionproxy.h"
#include "api/turncustomizer.h"
#include "api/videosourceproxy.h"
#include "logging/rtc_event_log/rtc_event_log.h"
#include "media/base/rtpdataengine.h"
#include "media/sctp/sctptransport.h"
#include "pc/rtpparametersconversion.h"
#include "rtc_base/bind.h"
#include "rtc_base/checks.h"
// Adding 'nogncheck' to disable the gn include headers check to support modular
// WebRTC build targets.
// TODO(zhihuang): This wouldn't be necessary if the interface and
// implementation of the media engine were in separate build targets.
#include "media/engine/webrtcmediaengine.h" // nogncheck
#include "media/engine/webrtcvideodecoderfactory.h" // nogncheck
#include "media/engine/webrtcvideoencoderfactory.h" // nogncheck
#include "modules/audio_device/include/audio_device.h" // nogncheck
#include "modules/congestion_controller/bbr/bbr_factory.h"
#include "p2p/base/basicpacketsocketfactory.h"
#include "p2p/client/basicportallocator.h"
#include "pc/audiotrack.h"
#include "pc/localaudiosource.h"
#include "pc/mediastream.h"
#include "pc/peerconnection.h"
#include "pc/videocapturertracksource.h"
#include "pc/videotrack.h"
#include "rtc_base/experiments/congestion_controller_experiment.h"
#include "system_wrappers/include/field_trial.h"
namespace webrtc {
rtc::scoped_refptr<PeerConnectionFactoryInterface>
CreateModularPeerConnectionFactory(
rtc::Thread* network_thread,
rtc::Thread* worker_thread,
rtc::Thread* signaling_thread,
std::unique_ptr<cricket::MediaEngineInterface> media_engine,
std::unique_ptr<CallFactoryInterface> call_factory,
std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory) {
PeerConnectionFactoryDependencies dependencies;
dependencies.network_thread = network_thread;
dependencies.worker_thread = worker_thread;
dependencies.signaling_thread = signaling_thread;
dependencies.media_engine = std::move(media_engine);
dependencies.call_factory = std::move(call_factory);
dependencies.event_log_factory = std::move(event_log_factory);
return CreateModularPeerConnectionFactory(std::move(dependencies));
}
rtc::scoped_refptr<PeerConnectionFactoryInterface>
CreateModularPeerConnectionFactory(
rtc::Thread* network_thread,
rtc::Thread* worker_thread,
rtc::Thread* signaling_thread,
std::unique_ptr<cricket::MediaEngineInterface> media_engine,
std::unique_ptr<CallFactoryInterface> call_factory,
std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory,
std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory,
std::unique_ptr<NetworkControllerFactoryInterface>
network_controller_factory) {
PeerConnectionFactoryDependencies dependencies;
dependencies.network_thread = network_thread;
dependencies.worker_thread = worker_thread;
dependencies.signaling_thread = signaling_thread;
dependencies.media_engine = std::move(media_engine);
dependencies.call_factory = std::move(call_factory);
dependencies.event_log_factory = std::move(event_log_factory);
dependencies.fec_controller_factory = std::move(fec_controller_factory);
dependencies.network_controller_factory =
std::move(network_controller_factory);
return CreateModularPeerConnectionFactory(std::move(dependencies));
}
rtc::scoped_refptr<PeerConnectionFactoryInterface>
CreateModularPeerConnectionFactory(
PeerConnectionFactoryDependencies dependencies) {
rtc::scoped_refptr<PeerConnectionFactory> pc_factory(
new rtc::RefCountedObject<PeerConnectionFactory>(
std::move(dependencies)));
// Call Initialize synchronously but make sure it is executed on
// |signaling_thread|.
MethodCall0<PeerConnectionFactory, bool> call(
pc_factory.get(), &PeerConnectionFactory::Initialize);
bool result = call.Marshal(RTC_FROM_HERE, pc_factory->signaling_thread());
if (!result) {
return nullptr;
}
return PeerConnectionFactoryProxy::Create(pc_factory->signaling_thread(),
pc_factory);
}
PeerConnectionFactory::PeerConnectionFactory(
rtc::Thread* network_thread,
rtc::Thread* worker_thread,
rtc::Thread* signaling_thread,
std::unique_ptr<cricket::MediaEngineInterface> media_engine,
std::unique_ptr<webrtc::CallFactoryInterface> call_factory,
std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory)
: PeerConnectionFactory(network_thread,
worker_thread,
signaling_thread,
std::move(media_engine),
std::move(call_factory),
std::move(event_log_factory),
nullptr,
nullptr) {}
PeerConnectionFactory::PeerConnectionFactory(
rtc::Thread* network_thread,
rtc::Thread* worker_thread,
rtc::Thread* signaling_thread,
std::unique_ptr<cricket::MediaEngineInterface> media_engine,
std::unique_ptr<webrtc::CallFactoryInterface> call_factory,
std::unique_ptr<RtcEventLogFactoryInterface> event_log_factory,
std::unique_ptr<FecControllerFactoryInterface> fec_controller_factory,
std::unique_ptr<NetworkControllerFactoryInterface>
network_controller_factory)
: wraps_current_thread_(false),
network_thread_(network_thread),
worker_thread_(worker_thread),
signaling_thread_(signaling_thread),
media_engine_(std::move(media_engine)),
call_factory_(std::move(call_factory)),
event_log_factory_(std::move(event_log_factory)),
fec_controller_factory_(std::move(fec_controller_factory)),
injected_network_controller_factory_(
std::move(network_controller_factory)),
bbr_network_controller_factory_(
absl::make_unique<BbrNetworkControllerFactory>()) {
if (!network_thread_) {
owned_network_thread_ = rtc::Thread::CreateWithSocketServer();
owned_network_thread_->SetName("pc_network_thread", nullptr);
owned_network_thread_->Start();
network_thread_ = owned_network_thread_.get();
}
if (!worker_thread_) {
owned_worker_thread_ = rtc::Thread::Create();
owned_worker_thread_->SetName("pc_worker_thread", nullptr);
owned_worker_thread_->Start();
worker_thread_ = owned_worker_thread_.get();
}
if (!signaling_thread_) {
signaling_thread_ = rtc::Thread::Current();
if (!signaling_thread_) {
// If this thread isn't already wrapped by an rtc::Thread, create a
// wrapper and own it in this class.
signaling_thread_ = rtc::ThreadManager::Instance()->WrapCurrentThread();
wraps_current_thread_ = true;
}
}
// TODO(deadbeef): Currently there is no way to create an external adm in
// libjingle source tree. So we can 't currently assert if this is NULL.
// RTC_DCHECK(default_adm != NULL);
}
PeerConnectionFactory::PeerConnectionFactory(
PeerConnectionFactoryDependencies dependencies)
: PeerConnectionFactory(
dependencies.network_thread,
dependencies.worker_thread,
dependencies.signaling_thread,
std::move(dependencies.media_engine),
std::move(dependencies.call_factory),
std::move(dependencies.event_log_factory),
std::move(dependencies.fec_controller_factory),
std::move(dependencies.network_controller_factory)) {
media_transport_factory_ = std::move(dependencies.media_transport_factory);
}
PeerConnectionFactory::~PeerConnectionFactory() {
RTC_DCHECK(signaling_thread_->IsCurrent());
channel_manager_.reset(nullptr);
// Make sure |worker_thread_| and |signaling_thread_| outlive
// |default_socket_factory_| and |default_network_manager_|.
default_socket_factory_ = nullptr;
default_network_manager_ = nullptr;
if (wraps_current_thread_)
rtc::ThreadManager::Instance()->UnwrapCurrentThread();
}
bool PeerConnectionFactory::Initialize() {
RTC_DCHECK(signaling_thread_->IsCurrent());
rtc::InitRandom(rtc::Time32());
default_network_manager_.reset(new rtc::BasicNetworkManager());
if (!default_network_manager_) {
return false;
}
default_socket_factory_.reset(
new rtc::BasicPacketSocketFactory(network_thread_));
if (!default_socket_factory_) {
return false;
}
channel_manager_ = absl::make_unique<cricket::ChannelManager>(
std::move(media_engine_), absl::make_unique<cricket::RtpDataEngine>(),
worker_thread_, network_thread_);
channel_manager_->SetVideoRtxEnabled(true);
if (!channel_manager_->Init()) {
return false;
}
return true;
}
void PeerConnectionFactory::SetOptions(const Options& options) {
options_ = options;
}
RtpCapabilities PeerConnectionFactory::GetRtpSenderCapabilities(
cricket::MediaType kind) const {
RTC_DCHECK_RUN_ON(signaling_thread_);
switch (kind) {
case cricket::MEDIA_TYPE_AUDIO: {
cricket::AudioCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedAudioSendCodecs(&cricket_codecs);
channel_manager_->GetSupportedAudioRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilities(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_VIDEO: {
cricket::VideoCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedVideoCodecs(&cricket_codecs);
channel_manager_->GetSupportedVideoRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilities(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_DATA:
return RtpCapabilities();
}
// Not reached; avoids compile warning.
FATAL();
}
RtpCapabilities PeerConnectionFactory::GetRtpReceiverCapabilities(
cricket::MediaType kind) const {
RTC_DCHECK_RUN_ON(signaling_thread_);
switch (kind) {
case cricket::MEDIA_TYPE_AUDIO: {
cricket::AudioCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedAudioReceiveCodecs(&cricket_codecs);
channel_manager_->GetSupportedAudioRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilities(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_VIDEO: {
cricket::VideoCodecs cricket_codecs;
cricket::RtpHeaderExtensions cricket_extensions;
channel_manager_->GetSupportedVideoCodecs(&cricket_codecs);
channel_manager_->GetSupportedVideoRtpHeaderExtensions(
&cricket_extensions);
return ToRtpCapabilities(cricket_codecs, cricket_extensions);
}
case cricket::MEDIA_TYPE_DATA:
return RtpCapabilities();
}
// Not reached; avoids compile warning.
FATAL();
}
rtc::scoped_refptr<AudioSourceInterface>
PeerConnectionFactory::CreateAudioSource(const cricket::AudioOptions& options) {
RTC_DCHECK(signaling_thread_->IsCurrent());
rtc::scoped_refptr<LocalAudioSource> source(
LocalAudioSource::Create(&options));
return source;
}
rtc::scoped_refptr<VideoTrackSourceInterface>
PeerConnectionFactory::CreateVideoSource(
std::unique_ptr<cricket::VideoCapturer> capturer,
const MediaConstraintsInterface* constraints) {
RTC_DCHECK(signaling_thread_->IsCurrent());
rtc::scoped_refptr<VideoTrackSourceInterface> source(
VideoCapturerTrackSource::Create(worker_thread_, std::move(capturer),
constraints, false));
return VideoTrackSourceProxy::Create(signaling_thread_, worker_thread_,
source);
}
rtc::scoped_refptr<VideoTrackSourceInterface>
PeerConnectionFactory::CreateVideoSource(
std::unique_ptr<cricket::VideoCapturer> capturer) {
RTC_DCHECK(signaling_thread_->IsCurrent());
rtc::scoped_refptr<VideoTrackSourceInterface> source(
VideoCapturerTrackSource::Create(worker_thread_, std::move(capturer),
false));
return VideoTrackSourceProxy::Create(signaling_thread_, worker_thread_,
source);
}
bool PeerConnectionFactory::StartAecDump(rtc::PlatformFile file,
int64_t max_size_bytes) {
RTC_DCHECK(signaling_thread_->IsCurrent());
return channel_manager_->StartAecDump(file, max_size_bytes);
}
void PeerConnectionFactory::StopAecDump() {
RTC_DCHECK(signaling_thread_->IsCurrent());
channel_manager_->StopAecDump();
}
rtc::scoped_refptr<PeerConnectionInterface>
PeerConnectionFactory::CreatePeerConnection(
const PeerConnectionInterface::RTCConfiguration& configuration,
std::unique_ptr<cricket::PortAllocator> allocator,
std::unique_ptr<rtc::RTCCertificateGeneratorInterface> cert_generator,
PeerConnectionObserver* observer) {
// Convert the legacy API into the new depnedency structure.
PeerConnectionDependencies dependencies(observer);
dependencies.allocator = std::move(allocator);
dependencies.cert_generator = std::move(cert_generator);
// Pass that into the new API.
return CreatePeerConnection(configuration, std::move(dependencies));
}
rtc::scoped_refptr<PeerConnectionInterface>
PeerConnectionFactory::CreatePeerConnection(
const PeerConnectionInterface::RTCConfiguration& configuration,
PeerConnectionDependencies dependencies) {
RTC_DCHECK(signaling_thread_->IsCurrent());
// Set internal defaults if optional dependencies are not set.
if (!dependencies.cert_generator) {
dependencies.cert_generator =
absl::make_unique<rtc::RTCCertificateGenerator>(signaling_thread_,
network_thread_);
}
if (!dependencies.allocator) {
network_thread_->Invoke<void>(RTC_FROM_HERE, [this, &configuration,
&dependencies]() {
dependencies.allocator = absl::make_unique<cricket::BasicPortAllocator>(
default_network_manager_.get(), default_socket_factory_.get(),
configuration.turn_customizer);
});
}
// TODO(zstein): Once chromium injects its own AsyncResolverFactory, set
// |dependencies.async_resolver_factory| to a new
// |rtc::BasicAsyncResolverFactory| if no factory is provided.
network_thread_->Invoke<void>(
RTC_FROM_HERE,
rtc::Bind(&cricket::PortAllocator::SetNetworkIgnoreMask,
dependencies.allocator.get(), options_.network_ignore_mask));
std::unique_ptr<RtcEventLog> event_log =
worker_thread_->Invoke<std::unique_ptr<RtcEventLog>>(
RTC_FROM_HERE,
rtc::Bind(&PeerConnectionFactory::CreateRtcEventLog_w, this));
std::unique_ptr<Call> call = worker_thread_->Invoke<std::unique_ptr<Call>>(
RTC_FROM_HERE,
rtc::Bind(&PeerConnectionFactory::CreateCall_w, this, event_log.get()));
rtc::scoped_refptr<PeerConnection> pc(
new rtc::RefCountedObject<PeerConnection>(this, std::move(event_log),
std::move(call)));
ActionsBeforeInitializeForTesting(pc);
if (!pc->Initialize(configuration, std::move(dependencies))) {
return nullptr;
}
return PeerConnectionProxy::Create(signaling_thread(), pc);
}
rtc::scoped_refptr<MediaStreamInterface>
PeerConnectionFactory::CreateLocalMediaStream(const std::string& stream_id) {
RTC_DCHECK(signaling_thread_->IsCurrent());
return MediaStreamProxy::Create(signaling_thread_,
MediaStream::Create(stream_id));
}
rtc::scoped_refptr<VideoTrackInterface> PeerConnectionFactory::CreateVideoTrack(
const std::string& id,
VideoTrackSourceInterface* source) {
RTC_DCHECK(signaling_thread_->IsCurrent());
rtc::scoped_refptr<VideoTrackInterface> track(
VideoTrack::Create(id, source, worker_thread_));
return VideoTrackProxy::Create(signaling_thread_, worker_thread_, track);
}
rtc::scoped_refptr<AudioTrackInterface> PeerConnectionFactory::CreateAudioTrack(
const std::string& id,
AudioSourceInterface* source) {
RTC_DCHECK(signaling_thread_->IsCurrent());
rtc::scoped_refptr<AudioTrackInterface> track(AudioTrack::Create(id, source));
return AudioTrackProxy::Create(signaling_thread_, track);
}
std::unique_ptr<cricket::SctpTransportInternalFactory>
PeerConnectionFactory::CreateSctpTransportInternalFactory() {
#ifdef HAVE_SCTP
return absl::make_unique<cricket::SctpTransportFactory>(network_thread());
#else
return nullptr;
#endif
}
cricket::ChannelManager* PeerConnectionFactory::channel_manager() {
return channel_manager_.get();
}
rtc::Thread* PeerConnectionFactory::signaling_thread() {
// This method can be called on a different thread when the factory is
// created in CreatePeerConnectionFactory().
return signaling_thread_;
}
rtc::Thread* PeerConnectionFactory::worker_thread() {
return worker_thread_;
}
rtc::Thread* PeerConnectionFactory::network_thread() {
return network_thread_;
}
std::unique_ptr<RtcEventLog> PeerConnectionFactory::CreateRtcEventLog_w() {
RTC_DCHECK_RUN_ON(worker_thread_);
auto encoding_type = RtcEventLog::EncodingType::Legacy;
if (field_trial::IsEnabled("WebRTC-RtcEventLogNewFormat"))
encoding_type = RtcEventLog::EncodingType::NewFormat;
return event_log_factory_
? event_log_factory_->CreateRtcEventLog(encoding_type)
: absl::make_unique<RtcEventLogNullImpl>();
}
std::unique_ptr<Call> PeerConnectionFactory::CreateCall_w(
RtcEventLog* event_log) {
RTC_DCHECK_RUN_ON(worker_thread_);
const int kMinBandwidthBps = 30000;
const int kStartBandwidthBps = 300000;
const int kMaxBandwidthBps = 2000000;
webrtc::Call::Config call_config(event_log);
if (!channel_manager_->media_engine() || !call_factory_) {
return nullptr;
}
call_config.audio_state =
channel_manager_->media_engine()->voice().GetAudioState();
call_config.bitrate_config.min_bitrate_bps = kMinBandwidthBps;
call_config.bitrate_config.start_bitrate_bps = kStartBandwidthBps;
call_config.bitrate_config.max_bitrate_bps = kMaxBandwidthBps;
call_config.fec_controller_factory = fec_controller_factory_.get();
if (CongestionControllerExperiment::BbrControllerEnabled()) {
RTC_LOG(LS_INFO) << "Using BBR network controller factory";
call_config.network_controller_factory =
bbr_network_controller_factory_.get();
} else if (CongestionControllerExperiment::InjectedControllerEnabled()) {
RTC_LOG(LS_INFO) << "Using injected network controller factory";
call_config.network_controller_factory =
injected_network_controller_factory_.get();
} else {
RTC_LOG(LS_INFO) << "Using default network controller factory";
}
return std::unique_ptr<Call>(call_factory_->CreateCall(call_config));
}
} // namespace webrtc