/** * @file llvoicewebrtc.h * @brief Declaration of LLWebRTCVoiceClient class which is the interface to the voice client process. * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2023, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_VOICE_WEBRTC_H #define LL_VOICE_WEBRTC_H class LLWebRTCProtocolParser; #include "lliopipe.h" #include "llpumpio.h" #include "llchainio.h" #include "lliosocket.h" #include "v3math.h" #include "llframetimer.h" #include "llviewerregion.h" #include "llcallingcard.h" // for LLFriendObserver #include "lleventcoro.h" #include "llcoros.h" #include "llparcel.h" #include "llmutelist.h" #include #include "boost/json.hpp" #ifdef LL_USESYSTEMLIBS # include "expat.h" #else # include "expat/expat.h" #endif #include "llvoiceclient.h" // WebRTC Includes #include class LLAvatarName; class LLVoiceWebRTCConnection; typedef std::shared_ptr connectionPtr_t; extern const std::string WEBRTC_VOICE_SERVER_TYPE; class LLWebRTCVoiceClient : public LLSingleton, virtual public LLVoiceModuleInterface, public llwebrtc::LLWebRTCDevicesObserver, public LLMuteListObserver, public llwebrtc::LLWebRTCLogCallback { LLSINGLETON(LLWebRTCVoiceClient); LOG_CLASS(LLWebRTCVoiceClient); virtual ~LLWebRTCVoiceClient(); public: /// @name LLVoiceModuleInterface virtual implementations /// @see LLVoiceModuleInterface //@{ void init(LLPumpIO *pump) override; // Call this once at application startup (creates connector) void terminate() override; // Call this to clean up during shutdown static bool isShuttingDown() { return sShuttingDown; } const LLVoiceVersionInfo& getVersion() override; void updateSettings() override; // call after loading settings and whenever they change // Returns true if WebRTC has successfully logged in and is not in error state bool isVoiceWorking() const override; std::string sipURIFromID(const LLUUID &id) const override; LLSD getP2PChannelInfoTemplate(const LLUUID& id) const override; void setHidden(bool hidden) override; // virtual /////////////////// /// @name Logging /// @{ void LogMessage(llwebrtc::LLWebRTCLogCallback::LogLevel level, const std::string& message) override; //@} ///////////////////// /// @name Tuning //@{ void tuningStart() override; void tuningStop() override; bool inTuningMode() override; void tuningSetMicVolume(float volume) override; void tuningSetSpeakerVolume(float volume) override; float tuningGetEnergy(void) override; //@} ///////////////////// /// @name Devices //@{ // This returns true when it's safe to bring up the "device settings" dialog in the prefs. bool deviceSettingsAvailable() override; bool deviceSettingsUpdated() override; //return if the list has been updated and never fetched, only to be called from the voicepanel. // Requery the WebRTC daemon for the current list of input/output devices. // If you pass true for clearCurrentList, deviceSettingsAvailable() will be false until the query has completed // (use this if you want to know when it's done). // If you pass false, you'll have no way to know when the query finishes, but the device lists will not appear empty in the interim. void refreshDeviceLists(bool clearCurrentList = true) override; void setCaptureDevice(const std::string& name) override; void setRenderDevice(const std::string& name) override; LLVoiceDeviceList& getCaptureDevices() override; LLVoiceDeviceList& getRenderDevices() override; //@} void getParticipantList(std::set &participants) override; bool isParticipant(const LLUUID& speaker_id) override; // Send a text message to the specified user, initiating the session if necessary. // virtual bool sendTextMessage(const LLUUID& participant_id, const std::string& message) const {return false;}; // Returns true if calling back the session URI after the session has closed is possible. // Currently this will be false only for PSTN P2P calls. // NOTE: this will return true if the session can't be found. bool isSessionCallBackPossible(const LLUUID &session_id) override; // WebRTC doesn't preclude text im bool isSessionTextIMPossible(const LLUUID &session_id) override { return true; } //////////////////////////// /// @name Channel stuff //@{ // returns true iff the user is currently in a proximal (local spatial) channel. // Note that gestures should only fire if this returns true. bool inProximalChannel() override; void setNonSpatialChannel(const LLSD& channelInfo, bool notify_on_first_join, bool hangup_on_last_leave) override { startAdHocSession(channelInfo, notify_on_first_join, hangup_on_last_leave); } bool setSpatialChannel(const LLSD &channelInfo) override; void leaveNonSpatialChannel() override; void processChannels(bool process) override; void leaveChannel(bool stopTalking); bool isCurrentChannel(const LLSD &channelInfo) override; bool compareChannels(const LLSD &channelInfo1, const LLSD &channelInfo2) override; //@} LLVoiceP2POutgoingCallInterface *getOutgoingCallInterface() override { return nullptr; } LLVoiceP2PIncomingCallInterfacePtr getIncomingCallInterface(const LLSD &voice_call_info) override { return nullptr; } ///////////////////////// /// @name Volume/gain //@{ void setVoiceVolume(F32 volume) override; void setMicGain(F32 volume) override; //@} ///////////////////////// /// @name enable disable voice and features //@{ void setVoiceEnabled(bool enabled) override; void setMuteMic(bool muted) override; // Set the mute state of the local mic. //@} ////////////////////////// /// @name nearby speaker accessors std::string getDisplayName(const LLUUID& id) override; bool isParticipantAvatar(const LLUUID &id) override; bool getIsSpeaking(const LLUUID& id) override; bool getIsModeratorMuted(const LLUUID& id) override; F32 getCurrentPower(const LLUUID& id) override; // "power" is related to "amplitude" in a defined way. I'm just not sure what the formula is... F32 getUserVolume(const LLUUID& id) override; void setUserVolume(const LLUUID& id, F32 volume) override; // set's volume for specified agent, from 0-1 (where .5 is nominal) //@} ////////////////// /// @name LLMuteListObserver //@{ void onChange() override; void onChangeDetailed(const LLMute& ) override; //@} // authorize the user void userAuthorized(const std::string &user_id, const LLUUID &agentID) override {}; void OnConnectionEstablished(const std::string& channelID, const LLUUID& regionID); void OnConnectionShutDown(const std::string &channelID, const LLUUID ®ionID); void OnConnectionFailure(const std::string &channelID, const LLUUID ®ionID, LLVoiceClientStatusObserver::EStatusType status_type = LLVoiceClientStatusObserver::ERROR_UNKNOWN); void updatePosition(void); // update the internal position state void sendPositionUpdate(bool force); // send the position to the voice server. void updateOwnVolume(); ////////////////////////////// /// @name Status notification //@{ void addObserver(LLVoiceClientStatusObserver* observer) override; void removeObserver(LLVoiceClientStatusObserver* observer) override; void addObserver(LLFriendObserver* observer) override; void removeObserver(LLFriendObserver* observer) override; void addObserver(LLVoiceClientParticipantObserver* observer) override; void removeObserver(LLVoiceClientParticipantObserver* observer) override; //@} ////////////////////////////// /// @name Devices change notification // LLWebRTCDevicesObserver //@{ void OnDevicesChanged(const llwebrtc::LLWebRTCVoiceDeviceList &render_devices, const llwebrtc::LLWebRTCVoiceDeviceList &capture_devices) override; //@} void OnDevicesChangedImpl(const llwebrtc::LLWebRTCVoiceDeviceList &render_devices, const llwebrtc::LLWebRTCVoiceDeviceList &capture_devices); struct participantState { public: participantState(const LLUUID& agent_id, const LLUUID& region); bool isAvatar(); std::string mURI; LLUUID mAvatarID; std::string mDisplayName; LLFrameTimer mSpeakingTimeout; F32 mLevel; // the current audio level of the participant F32 mVolume; // the gain applied to the participant bool mIsSpeaking; bool mIsModeratorMuted; LLUUID mRegion; }; typedef std::shared_ptr participantStatePtr_t; participantStatePtr_t findParticipantByID(const std::string &channelID, const LLUUID &id); participantStatePtr_t addParticipantByID(const std::string& channelID, const LLUUID &id, const LLUUID& region); void removeParticipantByID(const std::string& channelID, const LLUUID &id, const LLUUID& region); protected: typedef std::map participantUUIDMap; class sessionState { public: typedef std::shared_ptr ptr_t; typedef std::weak_ptr wptr_t; typedef std::function sessionFunc_t; static void addSession(const std::string &channelID, ptr_t& session); virtual ~sessionState(); participantStatePtr_t addParticipant(const LLUUID& agent_id, const LLUUID& region); void removeParticipant(const participantStatePtr_t &participant); void removeAllParticipants(const LLUUID& region = LLUUID()); participantStatePtr_t findParticipantByID(const LLUUID& id); static ptr_t matchSessionByChannelID(const std::string& channel_id); void shutdownAllConnections(); void revive(); static void processSessionStates(); virtual bool processConnectionStates(); virtual void sendData(const std::string &data); void setMuteMic(bool muted); void setSpeakerVolume(F32 volume); void setUserVolume(const LLUUID& id, F32 volume); void setUserMute(const LLUUID& id, bool mute); static void for_each(sessionFunc_t func); static void reapEmptySessions(); bool isEmpty() { return mWebRTCConnections.empty(); } virtual bool isSpatial() = 0; virtual bool isEstate() = 0; virtual bool isCallbackPossible() = 0; std::string mHandle; std::string mChannelID; std::string mName; bool mMuted; // this session is muted. F32 mSpeakerVolume; // volume for this session. bool mShuttingDown; participantUUIDMap mParticipantsByUUID; static bool hasSession(const std::string &sessionID) { return mSessions.find(sessionID) != mSessions.end(); } bool mHangupOnLastLeave; // notify observers after the session becomes empty. bool mNotifyOnFirstJoin; // notify observers when the first peer joins. protected: sessionState(); std::list mWebRTCConnections; private: static std::map mSessions; // canonical list of outstanding sessions. static void for_eachPredicate(const std::pair &a, sessionFunc_t func); }; typedef std::shared_ptr sessionStatePtr_t; typedef std::map sessionMap; class estateSessionState : public sessionState { public: estateSessionState(); bool processConnectionStates() override; bool isSpatial() override { return true; } bool isEstate() override { return true; } bool isCallbackPossible() override { return false; } }; class parcelSessionState : public sessionState { public: parcelSessionState(const std::string& channelID, S32 parcel_local_id); bool isSpatial() override { return true; } bool isEstate() override { return false; } bool isCallbackPossible() override { return false; } }; class adhocSessionState : public sessionState { public: adhocSessionState(const std::string &channelID, const std::string& credentials, bool notify_on_first_join, bool hangup_on_last_leave); bool isSpatial() override { return false; } bool isEstate() override { return false; } // only p2p-type adhoc sessions allow callback bool isCallbackPossible() override { return mNotifyOnFirstJoin && mHangupOnLastLeave; } // don't send spatial data to adhoc sessions. void sendData(const std::string &data) override { } protected: std::string mCredentials; }; /////////////////////////////////////////////////////// // Private Member Functions ////////////////////////////////////////////////////// static void predSendData(const LLWebRTCVoiceClient::sessionStatePtr_t &session, const std::string& spatial_data); static void predUpdateOwnVolume(const LLWebRTCVoiceClient::sessionStatePtr_t &session, F32 audio_level); static void predSetMuteMic(const LLWebRTCVoiceClient::sessionStatePtr_t &session, bool mute); static void predSetSpeakerVolume(const LLWebRTCVoiceClient::sessionStatePtr_t &session, F32 volume); static void predShutdownSession(const LLWebRTCVoiceClient::sessionStatePtr_t &session); static void predSetUserMute(const LLWebRTCVoiceClient::sessionStatePtr_t &session, const LLUUID& id, bool mute); static void predSetUserVolume(const LLWebRTCVoiceClient::sessionStatePtr_t &session, const LLUUID& id, F32 volume); //---------------------------------- // devices void clearCaptureDevices(); void addCaptureDevice(const LLVoiceDevice& device); void clearRenderDevices(); void addRenderDevice(const LLVoiceDevice& device); void setDevicesListUpdated(bool state); ///////////////////////////// // Sending updates of current state void setListenerPosition(const LLVector3d &position, const LLVector3 &velocity, const LLQuaternion &rot); void setAvatarPosition(const LLVector3d &position, const LLVector3 &velocity, const LLQuaternion &rot); LLVector3d getListenerPosition() { return mListenerPosition; } LLVector3d getSpeakerPosition() { return mAvatarPosition; } void setEarLocation(S32 loc); ///////////////////////////// // Accessors for data related to nearby speakers ///////////////////////////// sessionStatePtr_t findP2PSession(const LLUUID &agent_id); sessionStatePtr_t addSession(const std::string &channel_id, sessionState::ptr_t session); void deleteSession(const sessionStatePtr_t &session); // Does the actual work to get out of the audio session void leaveAudioSession(); friend class LLWebRTCVoiceClientCapResponder; void lookupName(const LLUUID &id); void onAvatarNameCache(const LLUUID& id, const LLAvatarName& av_name); void avatarNameResolved(const LLUUID &id, const std::string &name); static void predAvatarNameResolution(const LLWebRTCVoiceClient::sessionStatePtr_t &session, LLUUID id, std::string name); boost::signals2::connection mAvatarNameCacheConnection; private: // helper function to retrieve the audio level // Used in multiple places. float getAudioLevel(); // Coroutine support methods //--- void voiceConnectionCoro(); //--- /// Clean up objects created during a voice session. void cleanUp(); LL::WorkQueue::weak_t mMainQueue; bool mTuningMode; F32 mTuningMicGain; int mTuningSpeakerVolume; bool mDevicesListUpdated; // set to true when the device list has been updated // and false when the panelvoicedevicesettings has queried for an update status. std::string mSpatialSessionCredentials; std::string mMainSessionGroupHandle; // handle of the "main" session group. sessionStatePtr_t mSession; // Session state for the current session sessionStatePtr_t mNextSession; // Session state for the session we're trying to join llwebrtc::LLWebRTCDeviceInterface *mWebRTCDeviceInterface; LLVoiceDeviceList mCaptureDevices; LLVoiceDeviceList mRenderDevices; bool startEstateSession(); bool startParcelSession(const std::string& channelID, S32 parcelID); bool startAdHocSession(const LLSD &channelInfo, bool notify_on_first_join, bool hangup_on_last_leave); bool inSpatialChannel(); bool inOrJoiningChannel(const std::string &channelID); bool inEstateChannel(); LLSD getAudioSessionChannelInfo(); void enforceTether(); void updateNeighboringRegions(); std::set getNeighboringRegions() { return mNeighboringRegions; } LLVoiceVersionInfo mVoiceVersion; bool mSpatialCoordsDirty; LLVector3d mListenerPosition; LLVector3d mListenerRequestedPosition; LLVector3 mListenerVelocity; LLQuaternion mListenerRot; LLVector3d mAvatarPosition; LLVector3 mAvatarVelocity; LLQuaternion mAvatarRot; std::set mNeighboringRegions; // includes current region bool mMuteMic; bool mHidden; //Set to true during teleport to hide the agent's position. enum { earLocCamera = 0, // ear at camera earLocAvatar, // ear at avatar earLocMixed // ear at avatar location/camera direction }; S32 mEarLocation; float mSpeakerVolume; F32 mMicGain; bool mVoiceEnabled; bool mProcessChannels; typedef std::set observer_set_t; observer_set_t mParticipantObservers; void notifyParticipantObservers(); typedef std::set status_observer_set_t; status_observer_set_t mStatusObservers; void notifyStatusObservers(LLVoiceClientStatusObserver::EStatusType status); bool mIsInTuningMode; bool mIsProcessingChannels; bool mIsCoroutineActive; // These variables can last longer than WebRTC in coroutines so we need them as static static bool sShuttingDown; LLEventMailDrop mWebRTCPump; }; class LLVoiceWebRTCStats : public LLSingleton { LLSINGLETON(LLVoiceWebRTCStats); LOG_CLASS(LLVoiceWebRTCStats); virtual ~LLVoiceWebRTCStats(); private: F64SecondsImplicit mStartTime; U32 mConnectCycles; F64 mConnectTime; U32 mConnectAttempts; F64 mProvisionTime; U32 mProvisionAttempts; F64 mEstablishTime; U32 mEstablishAttempts; public: void reset(); void connectionAttemptStart(); void connectionAttemptEnd(bool success); void provisionAttemptStart(); void provisionAttemptEnd(bool success); void establishAttemptStart(); void establishAttemptEnd(bool success); LLSD read(); }; class LLVoiceWebRTCConnection : public llwebrtc::LLWebRTCSignalingObserver, public llwebrtc::LLWebRTCDataObserver, public std::enable_shared_from_this { public: LLVoiceWebRTCConnection(const LLUUID ®ionID, const std::string &channelID); virtual ~LLVoiceWebRTCConnection() = 0; ////////////////////////////// /// @name Signaling notification // LLWebRTCSignalingObserver //@{ void OnIceGatheringState(EIceGatheringState state) override; void OnIceCandidate(const llwebrtc::LLWebRTCIceCandidate &candidate) override; void OnOfferAvailable(const std::string &sdp) override; void OnRenegotiationNeeded() override; void OnPeerConnectionClosed() override; void OnAudioEstablished(llwebrtc::LLWebRTCAudioInterface *audio_interface) override; //@} ///////////////////////// /// @name Data Notification /// LLWebRTCDataObserver //@{ void OnDataReceived(const std::string &data, bool binary) override; void OnDataChannelReady(llwebrtc::LLWebRTCDataInterface *data_interface) override; //@} void OnDataReceivedImpl(const std::string &data, bool binary); void sendJoin(); void sendData(const std::string &data); void processIceUpdates(); static void processIceUpdatesCoro(connectionPtr_t connection); virtual void setMuteMic(bool muted); virtual void setSpeakerVolume(F32 volume); void setUserVolume(const LLUUID& id, F32 volume); void setUserMute(const LLUUID& id, bool mute); bool connectionStateMachine(); virtual bool isSpatial() = 0; LLUUID getRegionID() { return mRegionID; } void shutDown() { mShutDown = true; } void OnVoiceConnectionRequestSuccess(const LLSD &body); protected: typedef enum e_voice_connection_state { VOICE_STATE_ERROR = 0x0, VOICE_STATE_START_SESSION = 0x1, VOICE_STATE_WAIT_FOR_SESSION_START = 0x2, VOICE_STATE_REQUEST_CONNECTION = 0x4, VOICE_STATE_CONNECTION_WAIT = 0x8, VOICE_STATE_SESSION_ESTABLISHED = 0x10, VOICE_STATE_WAIT_FOR_DATA_CHANNEL = 0x20, VOICE_STATE_SESSION_UP = 0x40, VOICE_STATE_SESSION_RETRY = 0x80, VOICE_STATE_DISCONNECT = 0x100, VOICE_STATE_WAIT_FOR_EXIT = 0x200, VOICE_STATE_SESSION_EXIT = 0x400, VOICE_STATE_WAIT_FOR_CLOSE = 0x800, VOICE_STATE_CLOSED = 0x1000, VOICE_STATE_SESSION_STOPPING = 0x1F80 } EVoiceConnectionState; EVoiceConnectionState mVoiceConnectionState; LL::WorkQueue::weak_t mMainQueue; void setVoiceConnectionState(EVoiceConnectionState new_voice_connection_state) { if (new_voice_connection_state & VOICE_STATE_SESSION_STOPPING) { // the new state is shutdown or restart. mVoiceConnectionState = new_voice_connection_state; return; } if (mVoiceConnectionState & VOICE_STATE_SESSION_STOPPING) { // we're currently shutting down or restarting, so ignore any // state changes. return; } mVoiceConnectionState = new_voice_connection_state; } EVoiceConnectionState getVoiceConnectionState() { return mVoiceConnectionState; } virtual void requestVoiceConnection() = 0; static void requestVoiceConnectionCoro(connectionPtr_t connection) { connection->requestVoiceConnection(); } static void breakVoiceConnectionCoro(connectionPtr_t connection); LLVoiceClientStatusObserver::EStatusType mCurrentStatus; LLUUID mRegionID; LLUUID mViewerSession; std::string mChannelID; std::string mChannelSDP; std::string mRemoteChannelSDP; bool mMuted; F32 mSpeakerVolume; bool mShutDown; S32 mOutstandingRequests; S32 mRetryWaitPeriod; // number of UPDATE_THROTTLE_SECONDS we've // waited since our last attempt to connect. F32 mRetryWaitSecs; // number of seconds to wait before next retry std::vector mIceCandidates; bool mIceCompleted; llwebrtc::LLWebRTCPeerConnectionInterface *mWebRTCPeerConnectionInterface; llwebrtc::LLWebRTCAudioInterface *mWebRTCAudioInterface; llwebrtc::LLWebRTCDataInterface *mWebRTCDataInterface; }; class LLVoiceWebRTCSpatialConnection : public LLVoiceWebRTCConnection { public: LLVoiceWebRTCSpatialConnection(const LLUUID ®ionID, S32 parcelLocalID, const std::string &channelID); virtual ~LLVoiceWebRTCSpatialConnection(); void setMuteMic(bool muted) override; bool isSpatial() override { return true; } protected: void requestVoiceConnection() override; S32 mParcelLocalID; }; class LLVoiceWebRTCAdHocConnection : public LLVoiceWebRTCConnection { public: LLVoiceWebRTCAdHocConnection(const LLUUID ®ionID, const std::string &channelID, const std::string& credentials); virtual ~LLVoiceWebRTCAdHocConnection(); bool isSpatial() override { return false; } protected: void requestVoiceConnection() override; std::string mCredentials; }; #define VOICE_ELAPSED LLVoiceTimer(__FUNCTION__); #endif //LL_WebRTC_VOICE_CLIENT_H