| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/renderer/media/webrtc/peer_connection_dependency_factory.h" |
| |
| #include <stddef.h> |
| |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "base/bind.h" |
| #include "base/bind_helpers.h" |
| #include "base/command_line.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/metrics/field_trial.h" |
| #include "base/strings/string_util.h" |
| #include "base/strings/utf_string_conversions.h" |
| #include "base/synchronization/waitable_event.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "build/build_config.h" |
| #include "content/public/common/content_client.h" |
| #include "content/public/common/content_features.h" |
| #include "content/public/common/content_switches.h" |
| #include "content/public/common/feature_h264_with_openh264_ffmpeg.h" |
| #include "content/public/common/features.h" |
| #include "content/public/common/renderer_preferences.h" |
| #include "content/public/common/webrtc_ip_handling_policy.h" |
| #include "content/public/renderer/content_renderer_client.h" |
| #include "content/renderer/media/gpu/rtc_video_decoder_factory.h" |
| #include "content/renderer/media/gpu/rtc_video_encoder_factory.h" |
| #include "content/renderer/media/media_stream.h" |
| #include "content/renderer/media/media_stream_video_source.h" |
| #include "content/renderer/media/media_stream_video_track.h" |
| #include "content/renderer/media/rtc_peer_connection_handler.h" |
| #include "content/renderer/media/webrtc/stun_field_trial.h" |
| #include "content/renderer/media/webrtc/webrtc_video_capturer_adapter.h" |
| #include "content/renderer/media/webrtc_audio_device_impl.h" |
| #include "content/renderer/media/webrtc_logging.h" |
| #include "content/renderer/media/webrtc_uma_histograms.h" |
| #include "content/renderer/p2p/empty_network_manager.h" |
| #include "content/renderer/p2p/filtering_network_manager.h" |
| #include "content/renderer/p2p/ipc_network_manager.h" |
| #include "content/renderer/p2p/ipc_socket_factory.h" |
| #include "content/renderer/p2p/port_allocator.h" |
| #include "content/renderer/render_frame_impl.h" |
| #include "content/renderer/render_thread_impl.h" |
| #include "content/renderer/render_view_impl.h" |
| #include "crypto/openssl_util.h" |
| #include "jingle/glue/thread_wrapper.h" |
| #include "media/base/media_permission.h" |
| #include "media/filters/ffmpeg_glue.h" |
| #include "media/video/gpu_video_accelerator_factories.h" |
| #include "third_party/WebKit/public/platform/WebMediaConstraints.h" |
| #include "third_party/WebKit/public/platform/WebMediaStream.h" |
| #include "third_party/WebKit/public/platform/WebMediaStreamSource.h" |
| #include "third_party/WebKit/public/platform/WebMediaStreamTrack.h" |
| #include "third_party/WebKit/public/platform/WebURL.h" |
| #include "third_party/WebKit/public/web/WebDocument.h" |
| #include "third_party/WebKit/public/web/WebLocalFrame.h" |
| #include "third_party/webrtc/api/audio_codecs/builtin_audio_decoder_factory.h" |
| #include "third_party/webrtc/api/audio_codecs/builtin_audio_encoder_factory.h" |
| #include "third_party/webrtc/api/mediaconstraintsinterface.h" |
| #include "third_party/webrtc/api/videosourceproxy.h" |
| #include "third_party/webrtc/modules/video_coding/codecs/h264/include/h264.h" |
| #include "third_party/webrtc/rtc_base/ssladapter.h" |
| |
| #if defined(OS_ANDROID) |
| #include "media/base/android/media_codec_util.h" |
| #endif |
| |
| namespace content { |
| |
| namespace { |
| |
| enum WebRTCIPHandlingPolicy { |
| DEFAULT, |
| DEFAULT_PUBLIC_AND_PRIVATE_INTERFACES, |
| DEFAULT_PUBLIC_INTERFACE_ONLY, |
| DISABLE_NON_PROXIED_UDP, |
| }; |
| |
| WebRTCIPHandlingPolicy GetWebRTCIPHandlingPolicy( |
| const std::string& preference) { |
| if (preference == kWebRTCIPHandlingDefaultPublicAndPrivateInterfaces) |
| return DEFAULT_PUBLIC_AND_PRIVATE_INTERFACES; |
| if (preference == kWebRTCIPHandlingDefaultPublicInterfaceOnly) |
| return DEFAULT_PUBLIC_INTERFACE_ONLY; |
| if (preference == kWebRTCIPHandlingDisableNonProxiedUdp) |
| return DISABLE_NON_PROXIED_UDP; |
| return DEFAULT; |
| } |
| |
| bool IsValidPortRange(uint16_t min_port, uint16_t max_port) { |
| DCHECK(min_port <= max_port); |
| return min_port != 0 && max_port != 0; |
| } |
| |
| } // namespace |
| |
| PeerConnectionDependencyFactory::PeerConnectionDependencyFactory( |
| P2PSocketDispatcher* p2p_socket_dispatcher) |
| : network_manager_(NULL), |
| p2p_socket_dispatcher_(p2p_socket_dispatcher), |
| signaling_thread_(NULL), |
| worker_thread_(NULL), |
| chrome_signaling_thread_("Chrome_libJingle_Signaling"), |
| chrome_worker_thread_("Chrome_libJingle_WorkerThread") { |
| TryScheduleStunProbeTrial(); |
| } |
| |
| PeerConnectionDependencyFactory::~PeerConnectionDependencyFactory() { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| DVLOG(1) << "~PeerConnectionDependencyFactory()"; |
| DCHECK(!pc_factory_); |
| } |
| |
| std::unique_ptr<blink::WebRTCPeerConnectionHandler> |
| PeerConnectionDependencyFactory::CreateRTCPeerConnectionHandler( |
| blink::WebRTCPeerConnectionHandlerClient* client) { |
| // Save histogram data so we can see how much PeerConnetion is used. |
| // The histogram counts the number of calls to the JS API |
| // webKitRTCPeerConnection. |
| UpdateWebRTCMethodCount(WEBKIT_RTC_PEER_CONNECTION); |
| |
| return base::MakeUnique<RTCPeerConnectionHandler>(client, this); |
| } |
| |
| const scoped_refptr<webrtc::PeerConnectionFactoryInterface>& |
| PeerConnectionDependencyFactory::GetPcFactory() { |
| if (!pc_factory_.get()) |
| CreatePeerConnectionFactory(); |
| CHECK(pc_factory_.get()); |
| return pc_factory_; |
| } |
| |
| void PeerConnectionDependencyFactory::WillDestroyCurrentMessageLoop() { |
| CleanupPeerConnectionFactory(); |
| } |
| |
| void PeerConnectionDependencyFactory::CreatePeerConnectionFactory() { |
| DCHECK(!pc_factory_.get()); |
| DCHECK(!signaling_thread_); |
| DCHECK(!worker_thread_); |
| DCHECK(!network_manager_); |
| DCHECK(!socket_factory_); |
| DCHECK(!chrome_signaling_thread_.IsRunning()); |
| DCHECK(!chrome_worker_thread_.IsRunning()); |
| |
| DVLOG(1) << "PeerConnectionDependencyFactory::CreatePeerConnectionFactory()"; |
| |
| #if BUILDFLAG(RTC_USE_H264) && !defined(MEDIA_DISABLE_FFMPEG) |
| // Building /w |rtc_use_h264|, is the corresponding run-time feature enabled? |
| if (base::FeatureList::IsEnabled(kWebRtcH264WithOpenH264FFmpeg)) { |
| // |H264DecoderImpl| may be used which depends on FFmpeg, therefore we need |
| // to initialize FFmpeg before going further. |
| media::FFmpegGlue::InitializeFFmpeg(); |
| } else { |
| // Feature is to be disabled, no need to make sure FFmpeg is initialized. |
| webrtc::DisableRtcUseH264(); |
| } |
| #else |
| webrtc::DisableRtcUseH264(); |
| #endif // BUILDFLAG(RTC_USE_H264) && !defined(MEDIA_DISABLE_FFMPEG) |
| |
| base::MessageLoop::current()->AddDestructionObserver(this); |
| // To allow sending to the signaling/worker threads. |
| jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop(); |
| jingle_glue::JingleThreadWrapper::current()->set_send_allowed(true); |
| |
| EnsureWebRtcAudioDeviceImpl(); |
| |
| CHECK(chrome_signaling_thread_.Start()); |
| CHECK(chrome_worker_thread_.Start()); |
| |
| base::WaitableEvent start_worker_event( |
| base::WaitableEvent::ResetPolicy::MANUAL, |
| base::WaitableEvent::InitialState::NOT_SIGNALED); |
| chrome_worker_thread_.task_runner()->PostTask( |
| FROM_HERE, |
| base::BindOnce(&PeerConnectionDependencyFactory::InitializeWorkerThread, |
| base::Unretained(this), &worker_thread_, |
| &start_worker_event)); |
| |
| base::WaitableEvent create_network_manager_event( |
| base::WaitableEvent::ResetPolicy::MANUAL, |
| base::WaitableEvent::InitialState::NOT_SIGNALED); |
| chrome_worker_thread_.task_runner()->PostTask( |
| FROM_HERE, |
| base::BindOnce(&PeerConnectionDependencyFactory:: |
| CreateIpcNetworkManagerOnWorkerThread, |
| base::Unretained(this), &create_network_manager_event)); |
| |
| start_worker_event.Wait(); |
| create_network_manager_event.Wait(); |
| |
| CHECK(worker_thread_); |
| |
| // Init SSL, which will be needed by PeerConnection. |
| if (!rtc::InitializeSSL()) { |
| LOG(ERROR) << "Failed on InitializeSSL."; |
| NOTREACHED(); |
| return; |
| } |
| |
| base::WaitableEvent start_signaling_event( |
| base::WaitableEvent::ResetPolicy::MANUAL, |
| base::WaitableEvent::InitialState::NOT_SIGNALED); |
| chrome_signaling_thread_.task_runner()->PostTask( |
| FROM_HERE, |
| base::BindOnce( |
| &PeerConnectionDependencyFactory::InitializeSignalingThread, |
| base::Unretained(this), |
| RenderThreadImpl::current()->GetGpuFactories(), |
| &start_signaling_event)); |
| |
| start_signaling_event.Wait(); |
| CHECK(signaling_thread_); |
| } |
| |
| void PeerConnectionDependencyFactory::InitializeSignalingThread( |
| media::GpuVideoAcceleratorFactories* gpu_factories, |
| base::WaitableEvent* event) { |
| DCHECK(chrome_signaling_thread_.task_runner()->BelongsToCurrentThread()); |
| DCHECK(worker_thread_); |
| DCHECK(p2p_socket_dispatcher_.get()); |
| |
| jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop(); |
| jingle_glue::JingleThreadWrapper::current()->set_send_allowed(true); |
| signaling_thread_ = jingle_glue::JingleThreadWrapper::current(); |
| |
| socket_factory_.reset( |
| new IpcPacketSocketFactory(p2p_socket_dispatcher_.get())); |
| |
| std::unique_ptr<cricket::WebRtcVideoDecoderFactory> decoder_factory; |
| std::unique_ptr<cricket::WebRtcVideoEncoderFactory> encoder_factory; |
| |
| const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess(); |
| if (gpu_factories && gpu_factories->IsGpuVideoAcceleratorEnabled()) { |
| if (!cmd_line->HasSwitch(switches::kDisableWebRtcHWDecoding)) |
| decoder_factory.reset(new RTCVideoDecoderFactory(gpu_factories)); |
| |
| if (!cmd_line->HasSwitch(switches::kDisableWebRtcHWEncoding)) { |
| encoder_factory.reset(new RTCVideoEncoderFactory(gpu_factories)); |
| } |
| } |
| |
| #if defined(OS_ANDROID) |
| if (!media::MediaCodecUtil::SupportsSetParameters()) |
| encoder_factory.reset(); |
| #endif |
| |
| pc_factory_ = webrtc::CreatePeerConnectionFactory( |
| worker_thread_, signaling_thread_, audio_device_.get(), |
| webrtc::CreateBuiltinAudioEncoderFactory(), |
| webrtc::CreateBuiltinAudioDecoderFactory(), encoder_factory.release(), |
| decoder_factory.release()); |
| CHECK(pc_factory_.get()); |
| |
| webrtc::PeerConnectionFactoryInterface::Options factory_options; |
| factory_options.disable_sctp_data_channels = false; |
| factory_options.disable_encryption = |
| cmd_line->HasSwitch(switches::kDisableWebRtcEncryption); |
| factory_options.crypto_options.enable_gcm_crypto_suites = |
| cmd_line->HasSwitch(switches::kEnableWebRtcSrtpAesGcm); |
| factory_options.crypto_options.enable_encrypted_rtp_header_extensions = |
| cmd_line->HasSwitch(switches::kEnableWebRtcSrtpEncryptedHeaders); |
| pc_factory_->SetOptions(factory_options); |
| |
| event->Signal(); |
| } |
| |
| bool PeerConnectionDependencyFactory::PeerConnectionFactoryCreated() { |
| return pc_factory_.get() != NULL; |
| } |
| |
| scoped_refptr<webrtc::PeerConnectionInterface> |
| PeerConnectionDependencyFactory::CreatePeerConnection( |
| const webrtc::PeerConnectionInterface::RTCConfiguration& config, |
| blink::WebLocalFrame* web_frame, |
| webrtc::PeerConnectionObserver* observer) { |
| CHECK(web_frame); |
| CHECK(observer); |
| if (!GetPcFactory().get()) |
| return NULL; |
| |
| // Copy the flag from Preference associated with this WebLocalFrame. |
| P2PPortAllocator::Config port_config; |
| uint16_t min_port = 0; |
| uint16_t max_port = 0; |
| |
| // |media_permission| will be called to check mic/camera permission. If at |
| // least one of them is granted, P2PPortAllocator is allowed to gather local |
| // host IP addresses as ICE candidates. |media_permission| could be nullptr, |
| // which means the permission will be granted automatically. This could be the |
| // case when either the experiment is not enabled or the preference is not |
| // enforced. |
| // |
| // Note on |media_permission| lifetime: |media_permission| is owned by a frame |
| // (RenderFrameImpl). It is also stored as an indirect member of |
| // RTCPeerConnectionHandler (through PeerConnection/PeerConnectionInterface -> |
| // P2PPortAllocator -> FilteringNetworkManager -> |media_permission|). |
| // The RTCPeerConnectionHandler is owned as RTCPeerConnection::m_peerHandler |
| // in Blink, which will be reset in RTCPeerConnection::stop(). Since |
| // ActiveDOMObject::stop() is guaranteed to be called before a frame is |
| // detached, it is impossible for RTCPeerConnectionHandler to outlive the |
| // frame. Therefore using a raw pointer of |media_permission| is safe here. |
| media::MediaPermission* media_permission = nullptr; |
| if (!GetContentClient() |
| ->renderer() |
| ->ShouldEnforceWebRTCRoutingPreferences()) { |
| port_config.enable_multiple_routes = true; |
| port_config.enable_nonproxied_udp = true; |
| VLOG(3) << "WebRTC routing preferences will not be enforced"; |
| } else { |
| if (web_frame && web_frame->View()) { |
| RenderViewImpl* renderer_view_impl = |
| RenderViewImpl::FromWebView(web_frame->View()); |
| if (renderer_view_impl) { |
| // TODO(guoweis): |enable_multiple_routes| should be renamed to |
| // |request_multiple_routes|. Whether local IP addresses could be |
| // collected depends on if mic/camera permission is granted for this |
| // origin. |
| WebRTCIPHandlingPolicy policy = |
| GetWebRTCIPHandlingPolicy(renderer_view_impl->renderer_preferences() |
| .webrtc_ip_handling_policy); |
| switch (policy) { |
| // TODO(guoweis): specify the flag of disabling local candidate |
| // collection when webrtc is updated. |
| case DEFAULT_PUBLIC_INTERFACE_ONLY: |
| case DEFAULT_PUBLIC_AND_PRIVATE_INTERFACES: |
| port_config.enable_multiple_routes = false; |
| port_config.enable_nonproxied_udp = true; |
| port_config.enable_default_local_candidate = |
| (policy == DEFAULT_PUBLIC_AND_PRIVATE_INTERFACES); |
| break; |
| case DISABLE_NON_PROXIED_UDP: |
| port_config.enable_multiple_routes = false; |
| port_config.enable_nonproxied_udp = false; |
| break; |
| case DEFAULT: |
| port_config.enable_multiple_routes = true; |
| port_config.enable_nonproxied_udp = true; |
| break; |
| } |
| |
| min_port = |
| renderer_view_impl->renderer_preferences().webrtc_udp_min_port; |
| max_port = |
| renderer_view_impl->renderer_preferences().webrtc_udp_max_port; |
| |
| VLOG(3) << "WebRTC routing preferences: " |
| << "policy: " << policy |
| << ", multiple_routes: " << port_config.enable_multiple_routes |
| << ", nonproxied_udp: " << port_config.enable_nonproxied_udp |
| << ", min_udp_port: " << min_port |
| << ", max_udp_port: " << max_port; |
| } |
| } |
| if (port_config.enable_multiple_routes) { |
| bool create_media_permission = |
| base::CommandLine::ForCurrentProcess()->HasSwitch( |
| switches::kEnforceWebRtcIPPermissionCheck); |
| create_media_permission = |
| create_media_permission || |
| !StartsWith(base::FieldTrialList::FindFullName( |
| "WebRTC-LocalIPPermissionCheck"), |
| "Disabled", base::CompareCase::SENSITIVE); |
| if (create_media_permission) { |
| content::RenderFrameImpl* render_frame = |
| content::RenderFrameImpl::FromWebFrame(web_frame); |
| if (render_frame) |
| media_permission = render_frame->GetMediaPermission(); |
| DCHECK(media_permission); |
| } |
| } |
| } |
| |
| const GURL& requesting_origin = |
| GURL(web_frame->GetDocument().Url()).GetOrigin(); |
| |
| std::unique_ptr<rtc::NetworkManager> network_manager; |
| if (port_config.enable_multiple_routes) { |
| FilteringNetworkManager* filtering_network_manager = |
| new FilteringNetworkManager(network_manager_, requesting_origin, |
| media_permission); |
| network_manager.reset(filtering_network_manager); |
| } else { |
| network_manager.reset(new EmptyNetworkManager(network_manager_)); |
| } |
| std::unique_ptr<P2PPortAllocator> port_allocator(new P2PPortAllocator( |
| p2p_socket_dispatcher_, std::move(network_manager), socket_factory_.get(), |
| port_config, requesting_origin)); |
| if (IsValidPortRange(min_port, max_port)) |
| port_allocator->SetPortRange(min_port, max_port); |
| |
| return GetPcFactory() |
| ->CreatePeerConnection(config, std::move(port_allocator), |
| nullptr, observer) |
| .get(); |
| } |
| |
| scoped_refptr<webrtc::MediaStreamInterface> |
| PeerConnectionDependencyFactory::CreateLocalMediaStream( |
| const std::string& label) { |
| return GetPcFactory()->CreateLocalMediaStream(label).get(); |
| } |
| |
| scoped_refptr<webrtc::VideoTrackSourceInterface> |
| PeerConnectionDependencyFactory::CreateVideoTrackSourceProxy( |
| webrtc::VideoTrackSourceInterface* source) { |
| // PeerConnectionFactory needs to be instantiated to make sure that |
| // signaling_thread_ and worker_thread_ exist. |
| if (!PeerConnectionFactoryCreated()) |
| CreatePeerConnectionFactory(); |
| |
| return webrtc::VideoTrackSourceProxy::Create(signaling_thread_, |
| worker_thread_, source) |
| .get(); |
| } |
| |
| scoped_refptr<webrtc::VideoTrackInterface> |
| PeerConnectionDependencyFactory::CreateLocalVideoTrack( |
| const std::string& id, |
| webrtc::VideoTrackSourceInterface* source) { |
| return GetPcFactory()->CreateVideoTrack(id, source).get(); |
| } |
| |
| webrtc::SessionDescriptionInterface* |
| PeerConnectionDependencyFactory::CreateSessionDescription( |
| const std::string& type, |
| const std::string& sdp, |
| webrtc::SdpParseError* error) { |
| return webrtc::CreateSessionDescription(type, sdp, error); |
| } |
| |
| webrtc::IceCandidateInterface* |
| PeerConnectionDependencyFactory::CreateIceCandidate( |
| const std::string& sdp_mid, |
| int sdp_mline_index, |
| const std::string& sdp) { |
| return webrtc::CreateIceCandidate(sdp_mid, sdp_mline_index, sdp, nullptr); |
| } |
| |
| WebRtcAudioDeviceImpl* |
| PeerConnectionDependencyFactory::GetWebRtcAudioDevice() { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| EnsureWebRtcAudioDeviceImpl(); |
| return audio_device_.get(); |
| } |
| |
| void PeerConnectionDependencyFactory::InitializeWorkerThread( |
| rtc::Thread** thread, |
| base::WaitableEvent* event) { |
| jingle_glue::JingleThreadWrapper::EnsureForCurrentMessageLoop(); |
| jingle_glue::JingleThreadWrapper::current()->set_send_allowed(true); |
| *thread = jingle_glue::JingleThreadWrapper::current(); |
| event->Signal(); |
| } |
| |
| void PeerConnectionDependencyFactory::TryScheduleStunProbeTrial() { |
| const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess(); |
| |
| if (!cmd_line->HasSwitch(switches::kWebRtcStunProbeTrialParameter)) |
| return; |
| |
| // The underneath IPC channel has to be connected before sending any IPC |
| // message. |
| if (!p2p_socket_dispatcher_->connected()) { |
| base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| FROM_HERE, |
| base::BindOnce( |
| &PeerConnectionDependencyFactory::TryScheduleStunProbeTrial, |
| base::Unretained(this)), |
| base::TimeDelta::FromSeconds(1)); |
| return; |
| } |
| |
| // GetPcFactory could trigger an IPC message. If done before |
| // |p2p_socket_dispatcher_| is connected, that'll put the |
| // |p2p_socket_dispatcher_| in a bad state such that no other IPC message can |
| // be processed. |
| GetPcFactory(); |
| |
| const std::string params = |
| cmd_line->GetSwitchValueASCII(switches::kWebRtcStunProbeTrialParameter); |
| |
| chrome_worker_thread_.task_runner()->PostDelayedTask( |
| FROM_HERE, |
| base::BindOnce( |
| &PeerConnectionDependencyFactory::StartStunProbeTrialOnWorkerThread, |
| base::Unretained(this), params), |
| base::TimeDelta::FromMilliseconds(kExperimentStartDelayMs)); |
| } |
| |
| void PeerConnectionDependencyFactory::StartStunProbeTrialOnWorkerThread( |
| const std::string& params) { |
| DCHECK(network_manager_); |
| DCHECK(chrome_worker_thread_.task_runner()->BelongsToCurrentThread()); |
| stun_trial_.reset( |
| new StunProberTrial(network_manager_, params, socket_factory_.get())); |
| } |
| |
| void PeerConnectionDependencyFactory::CreateIpcNetworkManagerOnWorkerThread( |
| base::WaitableEvent* event) { |
| DCHECK(chrome_worker_thread_.task_runner()->BelongsToCurrentThread()); |
| network_manager_ = new IpcNetworkManager(p2p_socket_dispatcher_.get()); |
| event->Signal(); |
| } |
| |
| void PeerConnectionDependencyFactory::DeleteIpcNetworkManager() { |
| DCHECK(chrome_worker_thread_.task_runner()->BelongsToCurrentThread()); |
| delete network_manager_; |
| network_manager_ = NULL; |
| } |
| |
| void PeerConnectionDependencyFactory::CleanupPeerConnectionFactory() { |
| DVLOG(1) << "PeerConnectionDependencyFactory::CleanupPeerConnectionFactory()"; |
| pc_factory_ = NULL; |
| if (network_manager_) { |
| // The network manager needs to free its resources on the thread they were |
| // created, which is the worked thread. |
| if (chrome_worker_thread_.IsRunning()) { |
| chrome_worker_thread_.task_runner()->PostTask( |
| FROM_HERE, |
| base::BindOnce( |
| &PeerConnectionDependencyFactory::DeleteIpcNetworkManager, |
| base::Unretained(this))); |
| // Stopping the thread will wait until all tasks have been |
| // processed before returning. We wait for the above task to finish before |
| // letting the the function continue to avoid any potential race issues. |
| chrome_worker_thread_.Stop(); |
| } else { |
| NOTREACHED() << "Worker thread not running."; |
| } |
| } |
| } |
| |
| void PeerConnectionDependencyFactory::EnsureInitialized() { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| GetPcFactory(); |
| } |
| |
| scoped_refptr<base::SingleThreadTaskRunner> |
| PeerConnectionDependencyFactory::GetWebRtcWorkerThread() const { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| return chrome_worker_thread_.IsRunning() ? chrome_worker_thread_.task_runner() |
| : nullptr; |
| } |
| |
| scoped_refptr<base::SingleThreadTaskRunner> |
| PeerConnectionDependencyFactory::GetWebRtcSignalingThread() const { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| return chrome_signaling_thread_.IsRunning() |
| ? chrome_signaling_thread_.task_runner() |
| : nullptr; |
| } |
| |
| void PeerConnectionDependencyFactory::EnsureWebRtcAudioDeviceImpl() { |
| DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_); |
| if (audio_device_.get()) |
| return; |
| |
| audio_device_ = new WebRtcAudioDeviceImpl(); |
| } |
| |
| } // namespace content |