llvoiceclient.h

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#ifndef LL_VOICE_CLIENT_H
#define LL_VOICE_CLIENT_H

// This would create a circular reference -- just do a forward definition of necessary class names.
//#include "llvoavatar.h"
class LLVOAvatar;
class LLVivoxProtocolParser;

#include "lliopipe.h"
#include "llpumpio.h"
#include "llchainio.h"
#include "lliosocket.h"
#include "v3math.h"
#include "llframetimer.h"
#include "llviewerregion.h"

class LLVoiceClientParticipantObserver
{
public:
        virtual ~LLVoiceClientParticipantObserver() { }
        virtual void onChange() = 0;
};

class LLVoiceClientStatusObserver
{
public:
        typedef enum e_voice_status_type
        {
                // NOTE: when updating this enum, please also update the switch in
                //  LLVoiceClientStatusObserver::status2string().
                STATUS_LOGIN_RETRY,
                STATUS_LOGGED_IN,
                STATUS_JOINING,
                STATUS_JOINED,
                STATUS_LEFT_CHANNEL,
                BEGIN_ERROR_STATUS,
                ERROR_CHANNEL_FULL,
                ERROR_CHANNEL_LOCKED,
                ERROR_NOT_AVAILABLE,
                ERROR_UNKNOWN
        } EStatusType;

        virtual ~LLVoiceClientStatusObserver() { }
        virtual void onChange(EStatusType status, const std::string &channelURI, bool proximal) = 0;

        static const char *status2string(EStatusType inStatus);
};

class LLVoiceClient: public LLSingleton<LLVoiceClient>
{
        LOG_CLASS(LLVoiceClient);
        public:
                LLVoiceClient();        
                ~LLVoiceClient();
                
        public:
                static void init(LLPumpIO *pump);       // Call this once at application startup (creates connector)
                static void terminate();        // Call this to clean up during shutdown
                                                
        protected:
                bool writeString(const std::string &str);

        public:
                
                enum serviceType
                {
                        serviceTypeUnknown,     // Unknown, returned if no data on the avatar is available
                        serviceTypeA,           // spatialized local chat
                        serviceTypeB,           // remote multi-party chat
                        serviceTypeC            // one-to-one and small group chat
                };
                static F32 OVERDRIVEN_POWER_LEVEL;
                                
                // session control messages
                void connect();

                void connectorCreate();
                void connectorShutdown();

                void requestVoiceAccountProvision(S32 retries = 3);
                void userAuthorized(
                        const std::string& firstName,
                        const std::string& lastName,
                        const LLUUID &agentID);
                void login(const std::string& accountName, const std::string &password);
                void loginSendMessage();
                void logout();
                void logoutSendMessage();
                
                void channelGetListSendMessage();
                void sessionCreateSendMessage();
                void sessionConnectSendMessage();
                void sessionTerminate();
                void sessionTerminateSendMessage();
                void sessionTerminateByHandle(std::string &sessionHandle);
                
                void getCaptureDevicesSendMessage();
                void getRenderDevicesSendMessage();
                
                void clearCaptureDevices();
                void addCaptureDevice(const std::string& name);
                void setCaptureDevice(const std::string& name);
                
                void clearRenderDevices();
                void addRenderDevice(const std::string& name);
                void setRenderDevice(const std::string& name);

                void tuningStart();
                void tuningStop();
                bool inTuningMode();
                
                void tuningRenderStartSendMessage(const std::string& name, bool loop);
                void tuningRenderStopSendMessage();

                void tuningCaptureStartSendMessage(int duration);
                void tuningCaptureStopSendMessage();
                
                void tuningSetMicVolume(float volume);
                void tuningSetSpeakerVolume(float volume);
                float tuningGetEnergy(void);
                                
                // This returns true when it's safe to bring up the "device settings" dialog in the prefs.
                // i.e. when the daemon is running and connected, and the device lists are populated.
                bool deviceSettingsAvailable();
                
                // Requery the vivox 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);
                
                // Call this if the connection to the daemon terminates unexpectedly.  It will attempt to reset everything and relaunch.
                void daemonDied();

                // Call this if we're just giving up on voice (can't provision an account, etc.).  It will clean up and go away.
                void giveUp();
                
                // Response/Event handlers
                void connectorCreateResponse(int statusCode, std::string &statusString, std::string &connectorHandle);
                void loginResponse(int statusCode, std::string &statusString, std::string &accountHandle);
                void channelGetListResponse(int statusCode, std::string &statusString);
                void sessionCreateResponse(int statusCode, std::string &statusString, std::string &sessionHandle);
                void sessionConnectResponse(int statusCode, std::string &statusString);
                void sessionTerminateResponse(int statusCode, std::string &statusString);
                void logoutResponse(int statusCode, std::string &statusString);
                void connectorShutdownResponse(int statusCode, std::string &statusString);

                void loginStateChangeEvent(std::string &accountHandle, int statusCode, std::string &statusString, int state);
                void sessionNewEvent(std::string &accountHandle, std::string &eventSessionHandle, int state, std::string &nameString, std::string &uriString);
                void sessionStateChangeEvent(std::string &uriString, int statusCode, std::string &statusString, std::string &sessionHandle, int state,  bool isChannel, std::string &nameString);
                void participantStateChangeEvent(std::string &uriString, int statusCode, std::string &statusString, int state,  std::string &nameString, std::string &displayNameString, int participantType);
                void participantPropertiesEvent(std::string &uriString, int statusCode, std::string &statusString, bool isLocallyMuted, bool isModeratorMuted, bool isSpeaking, int volume, F32 energy);
                void auxAudioPropertiesEvent(F32 energy);
        
                void muteListChanged();
                
                // Sending updates of current state
                void setCameraPosition(const LLVector3d &position, const LLVector3 &velocity, const LLMatrix3 &rot);
                void setAvatarPosition(const LLVector3d &position, const LLVector3 &velocity, const LLMatrix3 &rot);
                bool channelFromRegion(LLViewerRegion *region, std::string &name);
                void leaveChannel(void);                // call this on logout or teleport begin

                
                void setMuteMic(bool muted);            // Use this to mute the local mic (for when the client is minimized, etc), ignoring user PTT state.
                void setUserPTTState(bool ptt);
                bool getUserPTTState();
                void toggleUserPTTState(void);
                void setVoiceEnabled(bool enabled);
                static bool voiceEnabled();
                void setUsePTT(bool usePTT);
                void setPTTIsToggle(bool PTTIsToggle);
                void setPTTKey(std::string &key);
                void setEarLocation(S32 loc);
                void setVoiceVolume(F32 volume);
                void setMicGain(F32 volume);
                void setUserVolume(const LLUUID& id, F32 volume); // set's volume for specified agent, from 0-1 (where .5 is nominal)
                void setVivoxDebugServerName(std::string &serverName);

                // PTT key triggering
                void keyDown(KEY key, MASK mask);
                void keyUp(KEY key, MASK mask);
                void middleMouseState(bool down);
                
                // Accessors for data related to nearby speakers
                BOOL getVoiceEnabled(const LLUUID& id);         // true if we've received data for this avatar
                BOOL getIsSpeaking(const LLUUID& id);
                F32 getCurrentPower(const LLUUID& id);          // "power" is related to "amplitude" in a defined way.  I'm just not sure what the formula is...
                BOOL getPTTPressed(const LLUUID& id);                   // This is the inverse of the "locally muted" property.
                BOOL getOnMuteList(const LLUUID& id);
                F32 getUserVolume(const LLUUID& id);
                LLString getDisplayName(const LLUUID& id);
                
                // MBW -- XXX -- Not sure how to get this data out of the TVC
                BOOL getUsingPTT(const LLUUID& id);
                serviceType getServiceType(const LLUUID& id);   // type of chat the user is involved in (see bHear scope doc for definitions of A/B/C)
                std::string getGroupID(const LLUUID& id);               // group ID if the user is in group chat (empty string if not applicable)

                BOOL getAreaVoiceDisabled();            // returns true if the area the avatar is in is speech-disabled.
                                                                                        // Use this to determine whether to show a "no speech" icon in the menu bar.

                struct participantState
                {
                public:
                        participantState(const std::string &uri);
                        std::string mURI;
                        std::string mName;
                        std::string mDisplayName;
                        bool mPTT;
                        bool mIsSpeaking;
                        LLFrameTimer mSpeakingTimeout;
                        F32     mLastSpokeTimestamp;
                        F32 mPower;
                        int mVolume;
                        serviceType mServiceType;
                        std::string mGroupID;
                        bool mOnMuteList;               // true if this avatar is on the user's mute list (and should be muted)
                        int mUserVolume;
                        bool mVolumeDirty;              // true if this participant needs a volume command sent (either mOnMuteList or mUserVolume has changed)
                        bool mAvatarIDValid;
                        LLUUID mAvatarID;
                };
                typedef std::map<std::string, participantState*> participantMap;
                
                participantState *findParticipant(const std::string &uri);
                participantState *findParticipantByAvatar(LLVOAvatar *avatar);
                participantState *findParticipantByID(const LLUUID& id);
                
                participantMap *getParticipantList(void);

                void addObserver(LLVoiceClientParticipantObserver* observer);
                void removeObserver(LLVoiceClientParticipantObserver* observer);

                void addStatusObserver(LLVoiceClientStatusObserver* observer);
                void removeStatusObserver(LLVoiceClientStatusObserver* observer);
                
                static void onAvatarNameLookup(const LLUUID& id, const char* first, const char* last, BOOL is_group, void* user_data);
                typedef std::vector<std::string> deviceList;

                deviceList *getCaptureDevices();
                deviceList *getRenderDevices();
                
                void setNonSpatialChannel(
                        const std::string &uri,
                        const std::string &credentials);
                void setSpatialChannel(
                        const std::string &uri,
                        const std::string &credentials);
                void callUser(LLUUID &uuid);
                void answerInvite(std::string &sessionHandle, LLUUID& other_user_id);
                void declineInvite(std::string &sessionHandle);
                void leaveNonSpatialChannel();

                // Returns the URI of the current channel, or an empty string if not currently in a channel.
                // NOTE that it will return an empty string if it's in the process of joining a channel.
                std::string getCurrentChannel();
                
                // 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();

                std::string sipURIFromID(const LLUUID &id);

        private:

                // internal state for a simple state machine.  This is used to deal with the asynchronous nature of some of the messages.
                // Note: if you change this list, please make corresponding changes to LLVoiceClient::state2string().
                enum state
                {
                        stateDisabled,                          // Voice is turned off.
                        stateStart,                                     // Class is initialized, socket is created
                        stateDaemonLaunched,            // Daemon has been launched
                        stateConnecting,                        // connect() call has been issued
                        stateIdle,                                      // socket is connected, ready for messaging
                        stateConnectorStart,            // connector needs to be started
                        stateConnectorStarting,         // waiting for connector handle
                        stateConnectorStarted,          // connector handle received
                        stateMicTuningNoLogin,          // mic tuning before login
                        stateLoginRetry,                        // need to retry login (failed due to changing password)
                        stateLoginRetryWait,            // waiting for retry timer
                        stateNeedsLogin,                        // send login request
                        stateLoggingIn,                         // waiting for account handle
                        stateLoggedIn,                          // account handle received
                        stateNoChannel,                         // 
                        stateMicTuningLoggedIn,         // mic tuning for a logged in user
                        stateSessionCreate,                     // need to send Session.Create command
                        stateSessionConnect,            // need to send Session.Connect command
                        stateJoiningSession,            // waiting for session handle
                        stateSessionJoined,                     // session handle received
                        stateRunning,                           // in session, steady state
                        stateLeavingSession,            // waiting for terminate session response
                        stateSessionTerminated,         // waiting for terminate session response

                        stateLoggingOut,                        // waiting for logout response
                        stateLoggedOut,                         // logout response received
                        stateConnectorStopping,         // waiting for connector stop
                        stateConnectorStopped,          // connector stop received
                        
                        // We go to this state if the login fails because the account needs to be provisioned.
                        
                        // error states.  No way to recover from these yet.
                        stateConnectorFailed,
                        stateConnectorFailedWaiting,
                        stateLoginFailed,
                        stateLoginFailedWaiting,
                        stateJoinSessionFailed,
                        stateJoinSessionFailedWaiting,

                        stateJail                                       // Go here when all else has failed.  Nothing will be retried, we're done.
                };
                
                state mState;
                bool mSessionTerminateRequested;
                bool mNonSpatialChannel;
                
                void setState(state inState);
                state getState(void)  { return mState; };
                static const char *state2string(state inState);
                
                void stateMachine();
                static void idle(void *user_data);
                
                LLHost mDaemonHost;
                LLSocket::ptr_t mSocket;
                bool mConnected;
                
                void closeSocket(void);
                
                LLPumpIO *mPump;
                friend class LLVivoxProtocolParser;
                
                std::string mAccountName;
                std::string mAccountPassword;
                std::string mAccountDisplayName;
                std::string mAccountFirstName;
                std::string mAccountLastName;
                
                std::string mNextP2PSessionURI;         // URI of the P2P session to join next
                std::string mNextSessionURI;            // URI of the session to join next
                std::string mNextSessionHandle;         // Session handle of the session to join next
                std::string mNextSessionHash;           // Password hash for the session to join next
                bool mNextSessionSpatial;                       // Will next session be a spatial chat?
                bool mNextSessionNoReconnect;           // Next session should not auto-reconnect (i.e. user -> user chat)
                bool mNextSessionResetOnClose;          // If this is true, go back to spatial chat when the next session terminates.
                
                std::string mSessionStateEventHandle;   // session handle received in SessionStateChangeEvents
                std::string mSessionStateEventURI;              // session URI received in SessionStateChangeEvents
                
                bool mTuningMode;
                float mTuningEnergy;
                std::string mTuningAudioFile;
                int mTuningMicVolume;
                bool mTuningMicVolumeDirty;
                int mTuningSpeakerVolume;
                bool mTuningSpeakerVolumeDirty;
                bool mTuningCaptureRunning;
                
                std::string mSpatialSessionURI;
                
                bool mSessionResetOnClose;
                
                int mVivoxErrorStatusCode;              
                std::string mVivoxErrorStatusString;
                
                std::string mChannelName;                       // Name of the channel to be looked up 
                bool mAreaVoiceDisabled;
                std::string mSessionURI;                        // URI of the session we're in.
                bool mSessionP2P;                                       // true if this session is a p2p call
                
                S32 mCurrentParcelLocalID;                      // Used to detect parcel boundary crossings
                std::string mCurrentRegionName;         // Used to detect parcel boundary crossings
                
                std::string mConnectorHandle;   // returned by "Create Connector" message
                std::string mAccountHandle;             // returned by login message            
                std::string mSessionHandle;             // returned by ?
                U32 mCommandCookie;
        
                std::string mAccountServerName;
                std::string mAccountServerURI;
                
                int mLoginRetryCount;
                
                participantMap mParticipantMap;
                bool mParticipantMapChanged;
                
                deviceList mCaptureDevices;
                deviceList mRenderDevices;

                std::string mCaptureDevice;
                std::string mRenderDevice;
                bool mCaptureDeviceDirty;
                bool mRenderDeviceDirty;
                
                participantState *addParticipant(const std::string &uri);
                // Note: after removeParticipant returns, the participant* that was passed to it will have been deleted.
                // Take care not to use the pointer again after that.
                void removeParticipant(participantState *participant);
                void removeAllParticipants();

                void updateMuteState(participantState *participant);

                typedef std::map<std::string, std::string> channelMap;
                channelMap mChannelMap;
                
                // These are used by the parser when processing a channel list response.
                void clearChannelMap(void);
                void addChannelMapEntry(std::string &name, std::string &uri);
                std::string findChannelURI(std::string &name);
                        
                // This should be called when the code detects we have changed parcels.
                // It initiates the call to the server that gets the parcel channel.
                void parcelChanged();
                
        void switchChannel(std::string uri = std::string(), bool spatial = true, bool noReconnect = false, std::string hash = "");
                void joinSession(std::string handle, std::string uri);
                
                std::string nameFromAvatar(LLVOAvatar *avatar);
                std::string nameFromID(const LLUUID &id);
                bool IDFromName(const std::string name, LLUUID &uuid);
                std::string displayNameFromAvatar(LLVOAvatar *avatar);
                std::string sipURIFromAvatar(LLVOAvatar *avatar);
                std::string sipURIFromName(std::string &name);
                                
                void sendPositionalUpdate(void);
                
                void buildSetCaptureDevice(std::ostringstream &stream);
                void buildSetRenderDevice(std::ostringstream &stream);
                
                void enforceTether(void);
                
                bool            mSpatialCoordsDirty;
                
                LLVector3d      mCameraPosition;
                LLVector3d      mCameraRequestedPosition;
                LLVector3       mCameraVelocity;
                LLMatrix3       mCameraRot;

                LLVector3d      mAvatarPosition;
                LLVector3       mAvatarVelocity;
                LLMatrix3       mAvatarRot;
                
                bool            mPTTDirty;
                bool            mPTT;
                
                bool            mUsePTT;
                bool            mPTTIsMiddleMouse;
                KEY                     mPTTKey;
                bool            mPTTIsToggle;
                bool            mUserPTTState;
                bool            mMuteMic;
                
                // Set to true when the mute state of someone in the participant list changes.
                // The code will have to walk the list to find the changed participant(s).
                bool            mVolumeDirty;
                
                enum
                {
                        earLocCamera = 0,               // ear at camera
                        earLocAvatar,                   // ear at avatar
                        earLocMixed                             // ear at avatar location/camera direction
                };
                
                S32                     mEarLocation;  
                
                bool            mSpeakerVolumeDirty;
                bool            mSpeakerMuteDirty;
                int                     mSpeakerVolume;

                int                     mMicVolume;
                bool            mMicVolumeDirty;
                
                bool            mVoiceEnabled;
                bool            mWriteInProgress;
                std::string mWriteString;
                size_t          mWriteOffset;
                
                LLTimer         mUpdateTimer;
                
                typedef std::set<LLVoiceClientParticipantObserver*> observer_set_t;
                observer_set_t mObservers;

                void notifyObservers();

                typedef std::set<LLVoiceClientStatusObserver*> status_observer_set_t;
                status_observer_set_t mStatusObservers;
                
                void notifyStatusObservers(LLVoiceClientStatusObserver::EStatusType status);
};

extern LLVoiceClient *gVoiceClient;

#endif //LL_VOICE_CLIENT_H

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