| /* |
| * 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. |
| */ |
| |
| #ifndef WEBRTC_PC_CHANNEL_H_ |
| #define WEBRTC_PC_CHANNEL_H_ |
| |
| #include <map> |
| #include <memory> |
| #include <set> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "webrtc/api/call/audio_sink.h" |
| #include "webrtc/api/rtpreceiverinterface.h" |
| #include "webrtc/media/base/mediachannel.h" |
| #include "webrtc/media/base/mediaengine.h" |
| #include "webrtc/media/base/streamparams.h" |
| #include "webrtc/media/base/videosinkinterface.h" |
| #include "webrtc/media/base/videosourceinterface.h" |
| #include "webrtc/p2p/base/dtlstransportinternal.h" |
| #include "webrtc/p2p/base/packettransportinternal.h" |
| #include "webrtc/p2p/base/transportcontroller.h" |
| #include "webrtc/p2p/client/socketmonitor.h" |
| #include "webrtc/pc/audiomonitor.h" |
| #include "webrtc/pc/mediamonitor.h" |
| #include "webrtc/pc/mediasession.h" |
| #include "webrtc/pc/rtcpmuxfilter.h" |
| #include "webrtc/pc/srtpfilter.h" |
| #include "webrtc/rtc_base/asyncinvoker.h" |
| #include "webrtc/rtc_base/asyncudpsocket.h" |
| #include "webrtc/rtc_base/criticalsection.h" |
| #include "webrtc/rtc_base/network.h" |
| #include "webrtc/rtc_base/sigslot.h" |
| #include "webrtc/rtc_base/window.h" |
| |
| namespace webrtc { |
| class AudioSinkInterface; |
| class RtpTransportInternal; |
| class SrtpTransport; |
| } // namespace webrtc |
| |
| namespace cricket { |
| |
| struct CryptoParams; |
| class MediaContentDescription; |
| |
| // BaseChannel contains logic common to voice and video, including enable, |
| // marshaling calls to a worker and network threads, and connection and media |
| // monitors. |
| // |
| // BaseChannel assumes signaling and other threads are allowed to make |
| // synchronous calls to the worker thread, the worker thread makes synchronous |
| // calls only to the network thread, and the network thread can't be blocked by |
| // other threads. |
| // All methods with _n suffix must be called on network thread, |
| // methods with _w suffix on worker thread |
| // and methods with _s suffix on signaling thread. |
| // Network and worker threads may be the same thread. |
| // |
| // WARNING! SUBCLASSES MUST CALL Deinit() IN THEIR DESTRUCTORS! |
| // This is required to avoid a data race between the destructor modifying the |
| // vtable, and the media channel's thread using BaseChannel as the |
| // NetworkInterface. |
| |
| class BaseChannel |
| : public rtc::MessageHandler, public sigslot::has_slots<>, |
| public MediaChannel::NetworkInterface, |
| public ConnectionStatsGetter { |
| public: |
| // If |srtp_required| is true, the channel will not send or receive any |
| // RTP/RTCP packets without using SRTP (either using SDES or DTLS-SRTP). |
| BaseChannel(rtc::Thread* worker_thread, |
| rtc::Thread* network_thread, |
| rtc::Thread* signaling_thread, |
| MediaChannel* channel, |
| const std::string& content_name, |
| bool rtcp_mux_required, |
| bool srtp_required); |
| virtual ~BaseChannel(); |
| bool Init_w(DtlsTransportInternal* rtp_dtls_transport, |
| DtlsTransportInternal* rtcp_dtls_transport, |
| rtc::PacketTransportInternal* rtp_packet_transport, |
| rtc::PacketTransportInternal* rtcp_packet_transport); |
| // Deinit may be called multiple times and is simply ignored if it's already |
| // done. |
| void Deinit(); |
| |
| rtc::Thread* worker_thread() const { return worker_thread_; } |
| rtc::Thread* network_thread() const { return network_thread_; } |
| const std::string& content_name() const { return content_name_; } |
| // TODO(deadbeef): This is redundant; remove this. |
| const std::string& transport_name() const { return transport_name_; } |
| bool enabled() const { return enabled_; } |
| |
| // This function returns true if we are using SDES. |
| bool sdes_active() const { return sdes_negotiator_.IsActive(); } |
| // The following function returns true if we are using DTLS-based keying. |
| bool dtls_active() const { return dtls_active_; } |
| // This function returns true if using SRTP (DTLS-based keying or SDES). |
| bool srtp_active() const { return sdes_active() || dtls_active(); } |
| |
| bool writable() const { return writable_; } |
| |
| // Set the transport(s), and update writability and "ready-to-send" state. |
| // |rtp_transport| must be non-null. |
| // |rtcp_transport| must be supplied if NeedsRtcpTransport() is true (meaning |
| // RTCP muxing is not fully active yet). |
| // |rtp_transport| and |rtcp_transport| must share the same transport name as |
| // well. |
| // Can not start with "rtc::PacketTransportInternal" and switch to |
| // "DtlsTransportInternal", or vice-versa. |
| void SetTransports(DtlsTransportInternal* rtp_dtls_transport, |
| DtlsTransportInternal* rtcp_dtls_transport); |
| void SetTransports(rtc::PacketTransportInternal* rtp_packet_transport, |
| rtc::PacketTransportInternal* rtcp_packet_transport); |
| // Channel control |
| bool SetLocalContent(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc); |
| bool SetRemoteContent(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc); |
| |
| bool Enable(bool enable); |
| |
| // Multiplexing |
| bool AddRecvStream(const StreamParams& sp); |
| bool RemoveRecvStream(uint32_t ssrc); |
| bool AddSendStream(const StreamParams& sp); |
| bool RemoveSendStream(uint32_t ssrc); |
| |
| // Monitoring |
| void StartConnectionMonitor(int cms); |
| void StopConnectionMonitor(); |
| // For ConnectionStatsGetter, used by ConnectionMonitor |
| bool GetConnectionStats(ConnectionInfos* infos) override; |
| |
| const std::vector<StreamParams>& local_streams() const { |
| return local_streams_; |
| } |
| const std::vector<StreamParams>& remote_streams() const { |
| return remote_streams_; |
| } |
| |
| sigslot::signal2<BaseChannel*, bool> SignalDtlsSrtpSetupFailure; |
| void SignalDtlsSrtpSetupFailure_n(bool rtcp); |
| void SignalDtlsSrtpSetupFailure_s(bool rtcp); |
| |
| // Used for latency measurements. |
| sigslot::signal1<BaseChannel*> SignalFirstPacketReceived; |
| |
| // Forward SignalSentPacket to worker thread. |
| sigslot::signal1<const rtc::SentPacket&> SignalSentPacket; |
| |
| // Emitted whenever rtcp-mux is fully negotiated and the rtcp-transport can |
| // be destroyed. |
| // Fired on the network thread. |
| sigslot::signal1<const std::string&> SignalRtcpMuxFullyActive; |
| |
| // Only public for unit tests. Otherwise, consider private. |
| DtlsTransportInternal* rtp_dtls_transport() const { |
| return rtp_dtls_transport_; |
| } |
| DtlsTransportInternal* rtcp_dtls_transport() const { |
| return rtcp_dtls_transport_; |
| } |
| |
| bool NeedsRtcpTransport(); |
| |
| // From RtpTransport - public for testing only |
| void OnTransportReadyToSend(bool ready); |
| |
| // Only public for unit tests. Otherwise, consider protected. |
| int SetOption(SocketType type, rtc::Socket::Option o, int val) |
| override; |
| int SetOption_n(SocketType type, rtc::Socket::Option o, int val); |
| |
| virtual cricket::MediaType media_type() = 0; |
| |
| // This function returns true if we require SRTP for call setup. |
| bool srtp_required_for_testing() const { return srtp_required_; } |
| |
| // Public for testing. |
| // TODO(zstein): Remove this once channels register themselves with |
| // an RtpTransport in a more explicit way. |
| bool HandlesPayloadType(int payload_type) const; |
| |
| protected: |
| virtual MediaChannel* media_channel() const { return media_channel_; } |
| |
| void SetTransports_n(DtlsTransportInternal* rtp_dtls_transport, |
| DtlsTransportInternal* rtcp_dtls_transport, |
| rtc::PacketTransportInternal* rtp_packet_transport, |
| rtc::PacketTransportInternal* rtcp_packet_transport); |
| |
| // This does not update writability or "ready-to-send" state; it just |
| // disconnects from the old channel and connects to the new one. |
| void SetTransport_n(bool rtcp, |
| DtlsTransportInternal* new_dtls_transport, |
| rtc::PacketTransportInternal* new_packet_transport); |
| |
| bool was_ever_writable() const { return was_ever_writable_; } |
| void set_local_content_direction(MediaContentDirection direction) { |
| local_content_direction_ = direction; |
| } |
| void set_remote_content_direction(MediaContentDirection direction) { |
| remote_content_direction_ = direction; |
| } |
| // These methods verify that: |
| // * The required content description directions have been set. |
| // * The channel is enabled. |
| // * And for sending: |
| // - The SRTP filter is active if it's needed. |
| // - The transport has been writable before, meaning it should be at least |
| // possible to succeed in sending a packet. |
| // |
| // When any of these properties change, UpdateMediaSendRecvState_w should be |
| // called. |
| bool IsReadyToReceiveMedia_w() const; |
| bool IsReadyToSendMedia_w() const; |
| rtc::Thread* signaling_thread() { return signaling_thread_; } |
| |
| void ConnectToDtlsTransport(DtlsTransportInternal* transport); |
| void DisconnectFromDtlsTransport(DtlsTransportInternal* transport); |
| void ConnectToPacketTransport(rtc::PacketTransportInternal* transport); |
| void DisconnectFromPacketTransport(rtc::PacketTransportInternal* transport); |
| |
| void FlushRtcpMessages_n(); |
| |
| // NetworkInterface implementation, called by MediaEngine |
| bool SendPacket(rtc::CopyOnWriteBuffer* packet, |
| const rtc::PacketOptions& options) override; |
| bool SendRtcp(rtc::CopyOnWriteBuffer* packet, |
| const rtc::PacketOptions& options) override; |
| |
| // From TransportChannel |
| void OnWritableState(rtc::PacketTransportInternal* transport); |
| |
| void OnDtlsState(DtlsTransportInternal* transport, DtlsTransportState state); |
| |
| void OnSelectedCandidatePairChanged( |
| IceTransportInternal* ice_transport, |
| CandidatePairInterface* selected_candidate_pair, |
| int last_sent_packet_id, |
| bool ready_to_send); |
| |
| bool PacketIsRtcp(const rtc::PacketTransportInternal* transport, |
| const char* data, |
| size_t len); |
| bool SendPacket(bool rtcp, |
| rtc::CopyOnWriteBuffer* packet, |
| const rtc::PacketOptions& options); |
| |
| bool WantsPacket(bool rtcp, const rtc::CopyOnWriteBuffer* packet); |
| void HandlePacket(bool rtcp, rtc::CopyOnWriteBuffer* packet, |
| const rtc::PacketTime& packet_time); |
| // TODO(zstein): packet can be const once the RtpTransport handles protection. |
| virtual void OnPacketReceived(bool rtcp, |
| rtc::CopyOnWriteBuffer* packet, |
| const rtc::PacketTime& packet_time); |
| void ProcessPacket(bool rtcp, |
| const rtc::CopyOnWriteBuffer& packet, |
| const rtc::PacketTime& packet_time); |
| |
| void EnableMedia_w(); |
| void DisableMedia_w(); |
| |
| // Performs actions if the RTP/RTCP writable state changed. This should |
| // be called whenever a channel's writable state changes or when RTCP muxing |
| // becomes active/inactive. |
| void UpdateWritableState_n(); |
| void ChannelWritable_n(); |
| void ChannelNotWritable_n(); |
| |
| bool AddRecvStream_w(const StreamParams& sp); |
| bool RemoveRecvStream_w(uint32_t ssrc); |
| bool AddSendStream_w(const StreamParams& sp); |
| bool RemoveSendStream_w(uint32_t ssrc); |
| bool ShouldSetupDtlsSrtp_n() const; |
| // Do the DTLS key expansion and impose it on the SRTP/SRTCP filters. |
| // |rtcp_channel| indicates whether to set up the RTP or RTCP filter. |
| bool SetupDtlsSrtp_n(bool rtcp); |
| void MaybeSetupDtlsSrtp_n(); |
| |
| // Should be called whenever the conditions for |
| // IsReadyToReceiveMedia/IsReadyToSendMedia are satisfied (or unsatisfied). |
| // Updates the send/recv state of the media channel. |
| void UpdateMediaSendRecvState(); |
| virtual void UpdateMediaSendRecvState_w() = 0; |
| |
| bool UpdateLocalStreams_w(const std::vector<StreamParams>& streams, |
| ContentAction action, |
| std::string* error_desc); |
| bool UpdateRemoteStreams_w(const std::vector<StreamParams>& streams, |
| ContentAction action, |
| std::string* error_desc); |
| virtual bool SetLocalContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) = 0; |
| virtual bool SetRemoteContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) = 0; |
| bool SetRtpTransportParameters(const MediaContentDescription* content, |
| ContentAction action, ContentSource src, |
| const RtpHeaderExtensions& extensions, std::string* error_desc); |
| bool SetRtpTransportParameters_n(const MediaContentDescription* content, |
| ContentAction action, ContentSource src, |
| const std::vector<int>& encrypted_extension_ids, |
| std::string* error_desc); |
| |
| // Return a list of RTP header extensions with the non-encrypted extensions |
| // removed depending on the current crypto_options_ and only if both the |
| // non-encrypted and encrypted extension is present for the same URI. |
| RtpHeaderExtensions GetFilteredRtpHeaderExtensions( |
| const RtpHeaderExtensions& extensions); |
| |
| // Helper method to get RTP Absoulute SendTime extension header id if |
| // present in remote supported extensions list. |
| void MaybeCacheRtpAbsSendTimeHeaderExtension_w( |
| const std::vector<webrtc::RtpExtension>& extensions); |
| |
| bool CheckSrtpConfig_n(const std::vector<CryptoParams>& cryptos, |
| bool* dtls, |
| std::string* error_desc); |
| bool SetSrtp_n(const std::vector<CryptoParams>& params, |
| ContentAction action, |
| ContentSource src, |
| const std::vector<int>& encrypted_extension_ids, |
| std::string* error_desc); |
| bool SetRtcpMux_n(bool enable, |
| ContentAction action, |
| ContentSource src, |
| std::string* error_desc); |
| |
| // From MessageHandler |
| void OnMessage(rtc::Message* pmsg) override; |
| |
| // Handled in derived classes |
| virtual void OnConnectionMonitorUpdate(ConnectionMonitor* monitor, |
| const std::vector<ConnectionInfo>& infos) = 0; |
| |
| // Helper function template for invoking methods on the worker thread. |
| template <class T, class FunctorT> |
| T InvokeOnWorker(const rtc::Location& posted_from, const FunctorT& functor) { |
| return worker_thread_->Invoke<T>(posted_from, functor); |
| } |
| |
| void AddHandledPayloadType(int payload_type); |
| |
| private: |
| bool InitNetwork_n(DtlsTransportInternal* rtp_dtls_transport, |
| DtlsTransportInternal* rtcp_dtls_transport, |
| rtc::PacketTransportInternal* rtp_packet_transport, |
| rtc::PacketTransportInternal* rtcp_packet_transport); |
| void DisconnectTransportChannels_n(); |
| void SignalSentPacket_n(rtc::PacketTransportInternal* transport, |
| const rtc::SentPacket& sent_packet); |
| void SignalSentPacket_w(const rtc::SentPacket& sent_packet); |
| bool IsReadyToSendMedia_n() const; |
| void CacheRtpAbsSendTimeHeaderExtension_n(int rtp_abs_sendtime_extn_id); |
| int GetTransportOverheadPerPacket() const; |
| void UpdateTransportOverhead(); |
| // Wraps the existing RtpTransport in an SrtpTransport. |
| void EnableSrtpTransport_n(); |
| |
| rtc::Thread* const worker_thread_; |
| rtc::Thread* const network_thread_; |
| rtc::Thread* const signaling_thread_; |
| rtc::AsyncInvoker invoker_; |
| |
| const std::string content_name_; |
| std::unique_ptr<ConnectionMonitor> connection_monitor_; |
| |
| // Won't be set when using raw packet transports. SDP-specific thing. |
| std::string transport_name_; |
| |
| const bool rtcp_mux_required_; |
| |
| // Separate DTLS/non-DTLS pointers to support using BaseChannel without DTLS. |
| // Temporary measure until more refactoring is done. |
| // If non-null, "X_dtls_transport_" will always equal "X_packet_transport_". |
| DtlsTransportInternal* rtp_dtls_transport_ = nullptr; |
| DtlsTransportInternal* rtcp_dtls_transport_ = nullptr; |
| std::unique_ptr<webrtc::RtpTransportInternal> rtp_transport_; |
| webrtc::SrtpTransport* srtp_transport_ = nullptr; |
| std::vector<std::pair<rtc::Socket::Option, int> > socket_options_; |
| std::vector<std::pair<rtc::Socket::Option, int> > rtcp_socket_options_; |
| SrtpFilter sdes_negotiator_; |
| RtcpMuxFilter rtcp_mux_filter_; |
| bool writable_ = false; |
| bool was_ever_writable_ = false; |
| bool has_received_packet_ = false; |
| bool dtls_active_ = false; |
| const bool srtp_required_ = true; |
| |
| // MediaChannel related members that should be accessed from the worker |
| // thread. |
| MediaChannel* const media_channel_; |
| // Currently the |enabled_| flag is accessed from the signaling thread as |
| // well, but it can be changed only when signaling thread does a synchronous |
| // call to the worker thread, so it should be safe. |
| bool enabled_ = false; |
| std::vector<StreamParams> local_streams_; |
| std::vector<StreamParams> remote_streams_; |
| MediaContentDirection local_content_direction_ = MD_INACTIVE; |
| MediaContentDirection remote_content_direction_ = MD_INACTIVE; |
| CandidatePairInterface* selected_candidate_pair_; |
| }; |
| |
| // VoiceChannel is a specialization that adds support for early media, DTMF, |
| // and input/output level monitoring. |
| class VoiceChannel : public BaseChannel { |
| public: |
| VoiceChannel(rtc::Thread* worker_thread, |
| rtc::Thread* network_thread, |
| rtc::Thread* signaling_thread, |
| MediaEngineInterface* media_engine, |
| VoiceMediaChannel* channel, |
| const std::string& content_name, |
| bool rtcp_mux_required, |
| bool srtp_required); |
| ~VoiceChannel(); |
| |
| // Configure sending media on the stream with SSRC |ssrc| |
| // If there is only one sending stream SSRC 0 can be used. |
| bool SetAudioSend(uint32_t ssrc, |
| bool enable, |
| const AudioOptions* options, |
| AudioSource* source); |
| |
| // downcasts a MediaChannel |
| VoiceMediaChannel* media_channel() const override { |
| return static_cast<VoiceMediaChannel*>(BaseChannel::media_channel()); |
| } |
| |
| void SetEarlyMedia(bool enable); |
| // This signal is emitted when we have gone a period of time without |
| // receiving early media. When received, a UI should start playing its |
| // own ringing sound |
| sigslot::signal1<VoiceChannel*> SignalEarlyMediaTimeout; |
| |
| // Returns if the telephone-event has been negotiated. |
| bool CanInsertDtmf(); |
| // Send and/or play a DTMF |event| according to the |flags|. |
| // The DTMF out-of-band signal will be used on sending. |
| // The |ssrc| should be either 0 or a valid send stream ssrc. |
| // The valid value for the |event| are 0 which corresponding to DTMF |
| // event 0-9, *, #, A-D. |
| bool InsertDtmf(uint32_t ssrc, int event_code, int duration); |
| bool SetOutputVolume(uint32_t ssrc, double volume); |
| void SetRawAudioSink(uint32_t ssrc, |
| std::unique_ptr<webrtc::AudioSinkInterface> sink); |
| webrtc::RtpParameters GetRtpSendParameters(uint32_t ssrc) const; |
| bool SetRtpSendParameters(uint32_t ssrc, |
| const webrtc::RtpParameters& parameters); |
| webrtc::RtpParameters GetRtpReceiveParameters(uint32_t ssrc) const; |
| bool SetRtpReceiveParameters(uint32_t ssrc, |
| const webrtc::RtpParameters& parameters); |
| |
| // Get statistics about the current media session. |
| bool GetStats(VoiceMediaInfo* stats); |
| |
| std::vector<webrtc::RtpSource> GetSources(uint32_t ssrc) const; |
| std::vector<webrtc::RtpSource> GetSources_w(uint32_t ssrc) const; |
| |
| // Monitoring functions |
| sigslot::signal2<VoiceChannel*, const std::vector<ConnectionInfo>&> |
| SignalConnectionMonitor; |
| |
| void StartMediaMonitor(int cms); |
| void StopMediaMonitor(); |
| sigslot::signal2<VoiceChannel*, const VoiceMediaInfo&> SignalMediaMonitor; |
| |
| void StartAudioMonitor(int cms); |
| void StopAudioMonitor(); |
| bool IsAudioMonitorRunning() const; |
| sigslot::signal2<VoiceChannel*, const AudioInfo&> SignalAudioMonitor; |
| |
| int GetInputLevel_w(); |
| int GetOutputLevel_w(); |
| void GetActiveStreams_w(AudioInfo::StreamList* actives); |
| webrtc::RtpParameters GetRtpSendParameters_w(uint32_t ssrc) const; |
| bool SetRtpSendParameters_w(uint32_t ssrc, webrtc::RtpParameters parameters); |
| webrtc::RtpParameters GetRtpReceiveParameters_w(uint32_t ssrc) const; |
| bool SetRtpReceiveParameters_w(uint32_t ssrc, |
| webrtc::RtpParameters parameters); |
| cricket::MediaType media_type() override { return cricket::MEDIA_TYPE_AUDIO; } |
| |
| private: |
| // overrides from BaseChannel |
| void OnPacketReceived(bool rtcp, |
| rtc::CopyOnWriteBuffer* packet, |
| const rtc::PacketTime& packet_time) override; |
| void UpdateMediaSendRecvState_w() override; |
| bool SetLocalContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) override; |
| bool SetRemoteContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) override; |
| void HandleEarlyMediaTimeout(); |
| bool InsertDtmf_w(uint32_t ssrc, int event, int duration); |
| bool SetOutputVolume_w(uint32_t ssrc, double volume); |
| |
| void OnMessage(rtc::Message* pmsg) override; |
| void OnConnectionMonitorUpdate( |
| ConnectionMonitor* monitor, |
| const std::vector<ConnectionInfo>& infos) override; |
| void OnMediaMonitorUpdate(VoiceMediaChannel* media_channel, |
| const VoiceMediaInfo& info); |
| void OnAudioMonitorUpdate(AudioMonitor* monitor, const AudioInfo& info); |
| |
| static const int kEarlyMediaTimeout = 1000; |
| MediaEngineInterface* media_engine_; |
| bool received_media_; |
| std::unique_ptr<VoiceMediaMonitor> media_monitor_; |
| std::unique_ptr<AudioMonitor> audio_monitor_; |
| |
| // Last AudioSendParameters sent down to the media_channel() via |
| // SetSendParameters. |
| AudioSendParameters last_send_params_; |
| // Last AudioRecvParameters sent down to the media_channel() via |
| // SetRecvParameters. |
| AudioRecvParameters last_recv_params_; |
| }; |
| |
| // VideoChannel is a specialization for video. |
| class VideoChannel : public BaseChannel { |
| public: |
| VideoChannel(rtc::Thread* worker_thread, |
| rtc::Thread* network_thread, |
| rtc::Thread* signaling_thread, |
| VideoMediaChannel* channel, |
| const std::string& content_name, |
| bool rtcp_mux_required, |
| bool srtp_required); |
| ~VideoChannel(); |
| |
| // downcasts a MediaChannel |
| VideoMediaChannel* media_channel() const override { |
| return static_cast<VideoMediaChannel*>(BaseChannel::media_channel()); |
| } |
| |
| bool SetSink(uint32_t ssrc, |
| rtc::VideoSinkInterface<webrtc::VideoFrame>* sink); |
| void FillBitrateInfo(BandwidthEstimationInfo* bwe_info); |
| // Get statistics about the current media session. |
| bool GetStats(VideoMediaInfo* stats); |
| |
| sigslot::signal2<VideoChannel*, const std::vector<ConnectionInfo>&> |
| SignalConnectionMonitor; |
| |
| void StartMediaMonitor(int cms); |
| void StopMediaMonitor(); |
| sigslot::signal2<VideoChannel*, const VideoMediaInfo&> SignalMediaMonitor; |
| |
| // Register a source and set options. |
| // The |ssrc| must correspond to a registered send stream. |
| bool SetVideoSend(uint32_t ssrc, |
| bool enable, |
| const VideoOptions* options, |
| rtc::VideoSourceInterface<webrtc::VideoFrame>* source); |
| webrtc::RtpParameters GetRtpSendParameters(uint32_t ssrc) const; |
| bool SetRtpSendParameters(uint32_t ssrc, |
| const webrtc::RtpParameters& parameters); |
| webrtc::RtpParameters GetRtpReceiveParameters(uint32_t ssrc) const; |
| bool SetRtpReceiveParameters(uint32_t ssrc, |
| const webrtc::RtpParameters& parameters); |
| cricket::MediaType media_type() override { return cricket::MEDIA_TYPE_VIDEO; } |
| |
| private: |
| // overrides from BaseChannel |
| void UpdateMediaSendRecvState_w() override; |
| bool SetLocalContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) override; |
| bool SetRemoteContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) override; |
| bool GetStats_w(VideoMediaInfo* stats); |
| webrtc::RtpParameters GetRtpSendParameters_w(uint32_t ssrc) const; |
| bool SetRtpSendParameters_w(uint32_t ssrc, webrtc::RtpParameters parameters); |
| webrtc::RtpParameters GetRtpReceiveParameters_w(uint32_t ssrc) const; |
| bool SetRtpReceiveParameters_w(uint32_t ssrc, |
| webrtc::RtpParameters parameters); |
| |
| void OnMessage(rtc::Message* pmsg) override; |
| void OnConnectionMonitorUpdate( |
| ConnectionMonitor* monitor, |
| const std::vector<ConnectionInfo>& infos) override; |
| void OnMediaMonitorUpdate(VideoMediaChannel* media_channel, |
| const VideoMediaInfo& info); |
| |
| std::unique_ptr<VideoMediaMonitor> media_monitor_; |
| |
| // Last VideoSendParameters sent down to the media_channel() via |
| // SetSendParameters. |
| VideoSendParameters last_send_params_; |
| // Last VideoRecvParameters sent down to the media_channel() via |
| // SetRecvParameters. |
| VideoRecvParameters last_recv_params_; |
| }; |
| |
| // RtpDataChannel is a specialization for data. |
| class RtpDataChannel : public BaseChannel { |
| public: |
| RtpDataChannel(rtc::Thread* worker_thread, |
| rtc::Thread* network_thread, |
| rtc::Thread* signaling_thread, |
| DataMediaChannel* channel, |
| const std::string& content_name, |
| bool rtcp_mux_required, |
| bool srtp_required); |
| ~RtpDataChannel(); |
| bool Init_w(DtlsTransportInternal* rtp_dtls_transport, |
| DtlsTransportInternal* rtcp_dtls_transport, |
| rtc::PacketTransportInternal* rtp_packet_transport, |
| rtc::PacketTransportInternal* rtcp_packet_transport); |
| |
| virtual bool SendData(const SendDataParams& params, |
| const rtc::CopyOnWriteBuffer& payload, |
| SendDataResult* result); |
| |
| void StartMediaMonitor(int cms); |
| void StopMediaMonitor(); |
| |
| // Should be called on the signaling thread only. |
| bool ready_to_send_data() const { |
| return ready_to_send_data_; |
| } |
| |
| sigslot::signal2<RtpDataChannel*, const DataMediaInfo&> SignalMediaMonitor; |
| sigslot::signal2<RtpDataChannel*, const std::vector<ConnectionInfo>&> |
| SignalConnectionMonitor; |
| |
| sigslot::signal2<const ReceiveDataParams&, const rtc::CopyOnWriteBuffer&> |
| SignalDataReceived; |
| // Signal for notifying when the channel becomes ready to send data. |
| // That occurs when the channel is enabled, the transport is writable, |
| // both local and remote descriptions are set, and the channel is unblocked. |
| sigslot::signal1<bool> SignalReadyToSendData; |
| cricket::MediaType media_type() override { return cricket::MEDIA_TYPE_DATA; } |
| |
| protected: |
| // downcasts a MediaChannel. |
| DataMediaChannel* media_channel() const override { |
| return static_cast<DataMediaChannel*>(BaseChannel::media_channel()); |
| } |
| |
| private: |
| struct SendDataMessageData : public rtc::MessageData { |
| SendDataMessageData(const SendDataParams& params, |
| const rtc::CopyOnWriteBuffer* payload, |
| SendDataResult* result) |
| : params(params), |
| payload(payload), |
| result(result), |
| succeeded(false) { |
| } |
| |
| const SendDataParams& params; |
| const rtc::CopyOnWriteBuffer* payload; |
| SendDataResult* result; |
| bool succeeded; |
| }; |
| |
| struct DataReceivedMessageData : public rtc::MessageData { |
| // We copy the data because the data will become invalid after we |
| // handle DataMediaChannel::SignalDataReceived but before we fire |
| // SignalDataReceived. |
| DataReceivedMessageData( |
| const ReceiveDataParams& params, const char* data, size_t len) |
| : params(params), |
| payload(data, len) { |
| } |
| const ReceiveDataParams params; |
| const rtc::CopyOnWriteBuffer payload; |
| }; |
| |
| typedef rtc::TypedMessageData<bool> DataChannelReadyToSendMessageData; |
| |
| // overrides from BaseChannel |
| // Checks that data channel type is RTP. |
| bool CheckDataChannelTypeFromContent(const DataContentDescription* content, |
| std::string* error_desc); |
| bool SetLocalContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) override; |
| bool SetRemoteContent_w(const MediaContentDescription* content, |
| ContentAction action, |
| std::string* error_desc) override; |
| void UpdateMediaSendRecvState_w() override; |
| |
| void OnMessage(rtc::Message* pmsg) override; |
| void OnConnectionMonitorUpdate( |
| ConnectionMonitor* monitor, |
| const std::vector<ConnectionInfo>& infos) override; |
| void OnMediaMonitorUpdate(DataMediaChannel* media_channel, |
| const DataMediaInfo& info); |
| void OnDataReceived( |
| const ReceiveDataParams& params, const char* data, size_t len); |
| void OnDataChannelError(uint32_t ssrc, DataMediaChannel::Error error); |
| void OnDataChannelReadyToSend(bool writable); |
| |
| std::unique_ptr<DataMediaMonitor> media_monitor_; |
| bool ready_to_send_data_ = false; |
| |
| // Last DataSendParameters sent down to the media_channel() via |
| // SetSendParameters. |
| DataSendParameters last_send_params_; |
| // Last DataRecvParameters sent down to the media_channel() via |
| // SetRecvParameters. |
| DataRecvParameters last_recv_params_; |
| }; |
| |
| } // namespace cricket |
| |
| #endif // WEBRTC_PC_CHANNEL_H_ |
