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/*
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 *  Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010, 2011 Savoir-Faire Linux Inc.
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 *  Author: Yan Morin <yan.morin@savoirfairelinux.com>
 *  Author: Laurielle Lea <laurielle.lea@savoirfairelinux.com>
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 *  Author: Emmanuel Milou <emmanuel.milou@savoirfairelinux.com>
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 *  Author: Guillaume Carmel-Archambault <guillaume.carmel-archambault@savoirfairelinux.com>
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 *  Author: Alexandre Savard <alexandre.savard@savoirfairelinux.com>
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 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 3 of the License, or
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 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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 *
 *  Additional permission under GNU GPL version 3 section 7:
 *
 *  If you modify this program, or any covered work, by linking or
 *  combining it with the OpenSSL project's OpenSSL library (or a
 *  modified version of that library), containing parts covered by the
 *  terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
 *  grants you additional permission to convey the resulting work.
 *  Corresponding Source for a non-source form of such a combination
 *  shall include the source code for the parts of OpenSSL used as well
 *  as that of the covered work.
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 */

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#ifndef __SFL_MANAGER_H__
#define __SFL_MANAGER_H__
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#include <string>
#include <vector>
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#include <set>
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#include <map>
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#include <cc++/thread.h>
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#include "dbus/dbusmanager.h"
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#include "config/config.h"
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#include "account.h"
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#include "call.h"
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#include "conference.h"
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#include "numbercleaner.h"
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#include "audio/sound/tonelist.h"  // for Tone::TONEID declaration
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#include "audio/sound/audiofile.h"
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#include "audio/sound/dtmf.h" // DTMF class contained by value here
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#include "audio/codecs/audiocodecfactory.h" 
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#include "audio/mainbuffer.h"
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#include "yamlemitter.h"
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#include "yamlparser.h"
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#include "preferences.h"
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#include "im/InstantMessaging.h"

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class AudioLayer;
class GuiFramework;
class TelephoneTone;
class VoIPLink;
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// class Conference;
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#ifdef USE_ZEROCONF
class DNSService;
#endif

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class HistoryManager;
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class SIPAccount;
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/** Define a type for a AccountMap container */
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typedef std::map<std::string, Account*> AccountMap;
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/** Define a type for a std::string to std::string Map inside ManagerImpl */
typedef std::map<std::string, std::string> CallAccountMap;
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typedef std::map<std::string, Call::CallConfiguration> CallConfigMap;
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/** Define a type for std::string vector (waiting list, incoming not answered) */
typedef std::set<std::string> CallIDSet;
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/** To send multiple string */
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typedef std::list<std::string> TokenList;

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/** To store conference objects by call ids
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    used to retreive the conference according to a call */
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typedef std::map<std::string, Conference*> ConferenceCallMap;
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/** To store conference objects by conference ids */
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typedef std::map<std::string, Conference*> ConferenceMap;
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static std::string default_conf = "conf";
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static char * mapStateToChar[] = {
    (char*) "UNREGISTERED",
    (char*) "TRYING",
    (char*) "REGISTERED",
    (char*) "ERROR",
    (char*) "ERRORAUTH",
    (char*) "ERRORNETWORK",
    (char*) "ERRORHOST",
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    (char*) "ERROREXISTSTUN",
    (char*) "ERRORCONFSTUN"
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};

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/** Manager (controller) of sflphone daemon */
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class ManagerImpl
{
    public:
        ManagerImpl (void);
        ~ManagerImpl (void);


        /**
         * General preferences configuration
         */
        Preferences preferences;

        /**
         * Voip related preferences
         */
        VoipPreference voipPreferences;

        /**
         * Addressbook related preferences
         */
        AddressbookPreference addressbookPreference;

        /**
         * Hook preferences
         */
        HookPreference hookPreference;

        /**
         * Audio preferences
         */
        AudioPreference audioPreference;

        /**
         * Shortcut preferences
         */
        ShortcutPreferences shortcutPreferences;

        /**
         * Method to build preferences from configuration
         */
        short buildConfiguration();

        /**
         * Initialisation of thread (sound) and map.
         * Init a new VoIPLink, audio codec and audio driver
         */
        void init (void);

        /**
         * Terminate all thread (sound, link) and unload AccountMap
         */
        void terminate (void);

        /**
         * Accessor to audiodriver.
         * it's multi-thread and use mutex internally
         * @return AudioLayer*  The audio layer object
         */
        AudioLayer* getAudioDriver (void) const {
            return _audiodriver;
        }

        /**
         * Get a descriptor map of codec available
         * @return CodecDescriptor  The internal codec map
         */
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        AudioCodecFactory& getAudioCodecFactory (void) {
            return _audioCodecFactory;
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        }

        /**
         * Functions which occur with a user's action
         * Place a new call
         * @param accountId	The account to make tha call with
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         * @param call_id  The call identifier
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         * @param to  The recipient of the call
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	 * @param conf_id The conference identifier if any
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         * @return bool true on success
         *		  false otherwise
         */
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        bool outgoingCall (const std::string&, const std::string&, const std::string&, const std::string& = "");
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        /**
         * Functions which occur with a user's action
         * Answer the call
         * @param id  The call identifier
         */
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        bool answerCall (const std::string& id);
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        /**
         * Functions which occur with a user's action
         * Hangup the call
         * @param id  The call identifier
         */
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        void hangupCall (const std::string& id);
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        /**
         * Functions which occur with a user's action
         * Hangup the conference (hangup every participants)
         * @param id  The call identifier
         */
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        bool hangupConference (const std::string& id);
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        /**
         * Functions which occur with a user's action
         * Put the call on hold
         * @param id  The call identifier
         */
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        bool onHoldCall (const std::string& id);
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        /**
         * Functions which occur with a user's action
         * Put the call off hold
         * @param id  The call identifier
         */
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        bool offHoldCall (const std::string& id);
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        /**
         * Functions which occur with a user's action
         * Transfer the call
         * @param id  The call identifier
         * @param to  The recipient of the transfer
         */
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        bool transferCall (const std::string& id, const std::string& to);
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        /**
         * Attended transfer
         * @param The call id to be transfered
         * @param The target
         */
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        bool attendedTransfer(const std::string& transferID, const std::string& targetID);
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        /**
         * Notify the client the transfer is successful
         */
        void transferSucceded();

        /**
         * Notify the client that the transfer failed
         */
        void transferFailed();

        /**
         * Functions which occur with a user's action
         * Refuse the call
         * @param id  The call identifier
         */
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        bool refuseCall (const std::string& id);
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        /**
         * Create a new conference given two participant
         * @param the first participant ID
         * @param the second participant ID
         */
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        Conference* createConference (const std::string& id1, const std::string& id2);
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        /**
         * Delete this conference
         * @param the conference ID
         */
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        void removeConference (const std::string& conference_id);
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        /**
         * Return the conference id for which this call is attached
         * @ param the call id
         */
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        Conference* getConferenceFromCallID (const std::string& call_id);
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        /**
         * Hold every participant to a conference
         * @param the conference id
         */
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        void holdConference (const std::string& conference_id);
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        /**
         * Unhold all conference participants
         * @param the conference id
         */
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        void unHoldConference (const std::string& conference_id);
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        /**
         * Test if this id is a conference (usefull to test current call)
         * @param the call id
         */
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        bool isConference (const std::string& call_id);
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        /**
         * Test if a call id particips to this conference
         * @param the call id
         */
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        bool participToConference (const std::string& call_id);
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        /**
         * Add a participant to a conference
         * @param the call id
         * @param the conference id
         */
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        void addParticipant (const std::string& call_id, const std::string& conference_id);
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        /**
         * Bind the main participant to a conference (mainly called on a double click action)
         * @param the conference id
         */
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        void addMainParticipant (const std::string& conference_id);
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        /**
         * Join two participants to create a conference
         * @param the fist call id
         * @param the second call id
         */
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        void joinParticipant (const std::string& call_id1, const std::string& call_id2);
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	/**
	 * Create a conference from a list of participant
	 * @param A vector containing the list of participant
 	 */
	void createConfFromParticipantList(const std::vector< std::string > &);

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        /**
         * Detach a participant from a conference, put the call on hold, do not hangup it
         * @param call id
         * @param the current call id
         */
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        void detachParticipant (const std::string& call_id, const std::string& current_call_id);
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        /**
         * Remove the conference participant from a conference
         * @param call id
         */
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        void removeParticipant (const std::string& call_id);
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        /**
         * Process remaining participant given a conference and the current call id.
         * Mainly called when a participant is detached or hagned up
         * @param current call id
         * @param conference pointer
         */
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        void processRemainingParticipant (std::string current_call_id, Conference *conf);
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        /**
         * Join two conference together into one unique conference
         */
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        void joinConference (const std::string& conf_id1, const std::string& conf_id2);
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        void addStream (const std::string& call_id);
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        void removeStream (const std::string& call_id);
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        /**
         * Save config to file
         * @return true on success
         *	    false otherwise
         */
        bool saveConfig (void);

        /**
         * @return true if we tried to register once
         */
        bool _hasTriedToRegister;

        /**
         * Handle choice of the DTMF-send-way
         * @param   id: callid of the line.
         * @param   code: pressed key.
         */
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        bool sendDtmf (const std::string& id, char code);
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        /**
         * Play the dtmf-associated sound
         * @param code  The pressed key
         */
        bool playDtmf (char code);

        /**
         * Play a ringtone
         * @return bool True on success
         *	      false otherwise
         */
        bool playTone ();

        /**
         * Play a special ringtone ( BUSY ) if there's at least one message on the voice mail
         * @return bool True on success
         *	      false otherwise
         */
        bool playToneWithMessage ();

        /**
         * Acts on the audio streams and audio files
         */
        void stopTone (void);

        /**
         * When receiving a new incoming call, add it to the callaccount map
         * and notify user
         * @param call A call pointer
         * @param accountId an account id
         * @return bool True if the call was added correctly
         */
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        bool incomingCall (Call* call, const std::string& accountId);
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        /**
         * Notify the user that the recipient of the call has answered and the put the
         * call in Current state
         * @param id  The call identifier
         */
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        void peerAnsweredCall (const std::string& id);
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        /**
         * Rings back because the outgoing call is ringing and the put the
         * call in Ringing state
         * @param id  The call identifier
         */
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        void peerRingingCall (const std::string& id);
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        /**
         * Put the call in Hungup state, remove the call from the list
         * @param id  The call identifier
         */
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        void peerHungupCall (const std::string& id);
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        /**
         * Notify the client with an incoming message
         * @param accountId	The account identifier
         * @param message The content of the message
         */
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        void incomingMessage (const std::string& callID, const std::string& from, const std::string& message);
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        /**
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         * Send a new text message to the call, if participate to a conference, send to all participant.
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         * @param callID	The call to send the message
         * @param message	The content of the message
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        * @param from	        The sender of this message (could be another participant of a conference)
         */
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        bool sendTextMessage (const std::string& callID, const std::string& message, const std::string& from);
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        /**
         * Notify the client he has voice mails
         * @param accountId	  The account identifier
         * @param nb_msg The number of messages
         */
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        void startVoiceMessageNotification (const std::string& accountId, int nb_msg);
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        /**
         * Notify the client through DBus that registration state has been updated
         */
        void connectionStatusNotification (void);

        /**
         * ConfigurationManager - Send registration request
         * @param accountId The account to register/unregister
         * @param enable The flag for the type of registration
         *		 0 for unregistration request
         *		 1 for registration request
         */
        void sendRegister (const ::std::string& accountId , const int32_t& enable);

        /**
         * Get account list
         * @return std::vector<std::string> A list of accoundIDs
         */
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        std::vector< std::string >  getAccountList() const;
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        /**
         * Set the account order in the config file
         */
        void setAccountsOrder (const std::string& order);

        /**
         * Retrieve details about a given account
         * @param accountID	  The account identifier
         * @return std::map< std::string, std::string > The account details
         */
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        std::map< std::string, std::string > getAccountDetails (const std::string& accountID) const;
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        /**
         * Retrieve details about a given call
         * @param callID	  The account identifier
         * @return std::map< std::string, std::string > The call details
         */
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        std::map< std::string, std::string > getCallDetails (const std::string& callID);
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        /**
         * Get call list
         * @return std::vector<std::string> A list of call IDs
         */
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        std::vector< std::string >  getCallList (void) const;
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        /**
         * Retrieve details about a given call
         * @param callID	  The account identifier
         * @return std::map< std::string, std::string > The call details
         */
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        std::map< std::string, std::string > getConferenceDetails (const std::string& callID) const;
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        /**
         * Get call list
         * @return std::vector<std::string> A list of call IDs
         */
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        std::vector< std::string >  getConferenceList (void) const;
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        /**
         * Get a list of participant to a conference
         * @return std::vector<std::string> A list of call IDs
         */
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        std::vector< std::string >  getParticipantList (const std::string& confID) const;
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        /**
         * Save the details of an existing account, given the account ID
         * This will load the configuration map with the given data.
         * It will also register/unregister links where the 'Enabled' switched.
         * @param accountID	  The account identifier
         * @param details	  The account parameters
         */
        void setAccountDetails (const ::std::string& accountID,
                                const std::map< ::std::string, ::std::string >& details);

        /**
         * Add a new account, and give it a new account ID automatically
         * @param details The new account parameters
         * @return The account Id given to the new account
         */
        std::string addAccount (const std::map< ::std::string, ::std::string >& details);

        /**
         * Delete an existing account, unregister VoIPLink associated, and
         * purge from configuration.
         * @param accountID	The account unique ID
         */
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        void removeAccount (const std::string& accountID);
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        /**
         * Get current codec name
         * @param call id
         * @return std::string The codec name
         */
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        std::string getCurrentCodecName (const std::string& id);
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        /**
         * Set input audio plugin
         * @param audioPlugin The audio plugin
         */
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        void setAudioPlugin (const std::string& audioPlugin);
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        /**
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             * Set audio device
             * @param index The index of the soundcard
             * @param the type of stream, either SFL_PCM_PLAYBACK, SFL_PCM_CAPTURE, SFL_PCM_RINGTONE
             */
        void setAudioDevice (const int index, const int streamType);
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        /**
         * Get list of supported audio output device
         * @return std::vector<std::string> A list of the audio devices supporting playback
         */
        std::vector<std::string> getAudioOutputDeviceList (void);

        /**
         * Get list of supported audio input device
         * @return std::vector<std::string> A list of the audio devices supporting capture
         */
        std::vector<std::string> getAudioInputDeviceList (void);

        /**
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         * Get string array representing integer indexes of output, input, and ringtone device
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         * @return std::vector<std::string> A list of the current audio devices
         */
        std::vector<std::string> getCurrentAudioDevicesIndex();

        /**
         * Get index of an audio device
         * @param name The string description of an audio device
         * @return int  His index
         */
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        int getAudioDeviceIndex (const std::string &name);
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        /**
         * Get current alsa plugin
         * @return std::string  The Alsa plugin
         */
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        std::string getCurrentAudioOutputPlugin (void) const;
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        /**
         * Get the noise reduction engin state from
         * the current audio layer.
         */
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        std::string getNoiseSuppressState (void) const;
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        /**
         * Set the noise reduction engin state in the current
         * audio layer.
         */
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        void setNoiseSuppressState (const std::string &state);
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        /**
         * Get the echo canceller engin state from
         * the current audio layer
         */
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        std::string getEchoCancelState(void) const;
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        /**
         * Set the echo canceller engin state
         */
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        void setEchoCancelState(const std::string &state);
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        int getEchoCancelTailLength(void) const;
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        void setEchoCancelTailLength(int);

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        int getEchoCancelDelay(void) const;
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        void setEchoCancelDelay(int);

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        /**
         * Convert a list of payload in a special format, readable by the server.
         * Required format: payloads separated with one slash.
         * @return std::string The serializabled string
         */
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        static std::string serialize (const std::vector<std::string> &v);
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        static std::vector<std::string> unserialize (std::string v);
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        /**
         * Ringtone option.
         * If ringtone is enabled, ringtone on incoming call use custom choice. If not, only standart tone.
         * @return int	1 if enabled
         *	        0 otherwise
         */
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        int isRingtoneEnabled (const std::string& id);
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        /**
         * Set the ringtone option
         * Inverse current value
         */
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        void ringtoneEnabled (const std::string& id);
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        /**
         * Get the recording path from configuration tree
         * @return the string correspoding to the path
         */
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        std::string getRecordPath (void) const;
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        /**
         * Set the recoding path in the configuration tree
         * @param a string reresenting the path
         */
        void setRecordPath (const std::string& recPath);

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        /**
         * Get is always recording functionality
         */
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        bool getIsAlwaysRecording(void) const;
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        /**
         * Set is always recording functionality, every calls will then be set in RECORDING mode
         * once answered
         */
        void setIsAlwaysRecording(bool isAlwaysRec);

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        /**
         * Set recording on / off
         * Start recording
         * @param id  The call identifier
         */
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        void setRecordingCall (const std::string& id);
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        /**
         * Return true if the call is currently recorded
         */
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        bool isRecording (const std::string& id);
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	/**
	 * Start playback fo a recorded file if and only if audio layer is not already started.
 	 * @param File path of the file to play
         */
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        bool startRecordedFilePlayback(const std::string&);
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	/**
	 * Stop playback of recorded file
	 * @param File of the file to stop
	 */
        void stopRecordedFilePlayback(const std::string&);

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        /**
         * Set the maximum number of days to keep in the history
         * @param calls The number of days
         */
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        void setHistoryLimit (int days);
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        /**
         * Get the maximum number of days to keep in the history
         * @return double The number of days
         */
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        int getHistoryLimit (void) const;
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        /**
         * Configure the start-up option
         * @return int	1 if SFLphone should start in the system tray
         *	        0 otherwise
         */
        int isStartHidden (void);

        /**
         * Configure the start-up option
         * At startup, SFLphone can be displayed or start hidden in the system tray
         */
        void startHidden (void);

        /**
         * Set the desktop mail notification level
         */
        void setMailNotify (void);


        /**
         * Addressbook configuration
         */
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        std::map<std::string, int32_t> getAddressbookSettings (void) const;
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        /**
         * Addressbook configuration
         */
        void setAddressbookSettings (const std::map<std::string, int32_t>& settings);

        /**
         * Addressbook list
         */
        void setAddressbookList (const std::vector<  std::string >& list);

        /**
         * Addressbook list
         */
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        std::vector <std::string> getAddressbookList (void) const;
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        /**
         * Hook configuration
         */
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        std::map<std::string, std::string> getHookSettings (void) const;
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        /**
         * Hook configuration
         */
        void setHookSettings (const std::map<std::string, std::string>& settings);


        /**
         * Get the audio manager
         * @return int The audio manager
         *		    0 ALSA
         *		    1 PULSEAUDIO
         */
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        int32_t getAudioManager (void) const;
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        /**
         * Set the audio manager
         */
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        void setAudioManager (int32_t api);
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        void switchAudioManager (void);

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        /**
         * Set the internal audio sampling rate change. Should close the audio layer and
         * reopen stream at different rate,
         */
        void audioSamplingRateChanged (int);
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        /**
         * Get the desktop mail notification level
         * @return int The mail notification level
         */
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        int32_t getMailNotify (void) const;
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        /**
         * Get the list of the active codecs
         * @return std::vector< ::std::string >  The list of active codecs
         */
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        std::vector< ::std::string > getActiveCodecList (void) const;
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        /*
         * Notify the client that an error occured
         * @param errCode The error code. Could be: ALSA_CAPTURE_ERROR
         *					       ALSA_PLAYBACK_ERROR
         */
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        void notifyErrClient (int32_t errCode);
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        /**
         * Retrieve in the configuration tree the value of a parameter in a specific section
         * @param section	The section to look in
         * @param name	The name of the parameter you want to get
         * @param arg	Undocumented
         * @return bool	true on success
         *			false otherwise
         */
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        bool getConfig (const std::string& section, const std::string& name, TokenList& arg) const;
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        /**
         * Change a specific value in the configuration tree.
         * This value will then be saved in the user config file sflphonedrc
         * @param section	The section name
         * @param name	The parameter name
         * @param value	The new string value
         * @return bool	true on success
         *		      false otherwise
         */
        bool setConfig (const std::string& section, const std::string& name, const std::string& value);

        /**
         * Change a specific value in the configuration tree.
         * This value will then be saved in the user config file sflphonedrc
         * @param section	The section name
         * @param name	The parameter name
         * @param value	The new int value
         * @return bool	true on success
         *		      false otherwise
         */
        bool setConfig (const std::string& section, const std::string& name, int value);

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        std::string mapStateNumberToString (RegistrationState state) const {
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            std::string stringRepresentation;

            if (state > NumberOfState) {
                stringRepresentation = "ERROR";
                return stringRepresentation;
            }

            stringRepresentation = mapStateToChar[state];
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            return stringRepresentation;
        }
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        /**
         * Get a int from the configuration tree
         * Throw an Conf::ConfigTreeItemException if not found
         * @param section The section name to look in
         * @param name    The parameter name
         * @return int    The int value
         */

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        int getConfigInt (const std::string& section, const std::string& name) const;
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        /**
           * Get a bool from the configuration tree
           * Throw an Conf::ConfigTreeItemException if not found
           * @param section The section name to look in
           * @param name    The parameter name
           * @return bool    The bool value
           */

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        bool getConfigBool (const std::string& section, const std::string& name) const;
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        /**
         * Get a string from the configuration tree
         * Throw an Conf::ConfigTreeItemException if not found
         * @param section The section name to look in
         * @param name    The parameter name
         * @return sdt::string    The string value
         */
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        std::string getConfigString (const std::string& section, const std::string& name) const;
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        /**
         * Retrieve the soundcards index in the user config file and try to open audio devices
         * with a specific alsa plugin.
         * Set the audio layer sample rate
         */
        void selectAudioDriver (void);

        /**
         * Handle audio sounds heard by a caller while they wait for their
         * connection to a called party to be completed.
         */
        void ringback ();

        /**
         * Handle played music when an incoming call occurs
         */
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        void ringtone (const std::string& accountID);
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        /**
         * Handle played music when a congestion occurs
         */
        void congestion ();

        /**
         * Handle played sound when a call can not be conpleted because of a busy recipient
         */
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        void callBusy (const std::string& id);
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        /**
         * Handle played sound when a failure occurs
         */
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        void callFailure (const std::string& id);
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        /**
         * Retrieve the current telephone tone
         * @return AudioLoop*   The audio tone or 0 if no tone (init before calling this function)
         */
        AudioLoop* getTelephoneTone();

        /**
         * Retrieve the current telephone file
         * @return AudioLoop* The audio file or 0 if the wav is stopped
         */
        AudioLoop* getTelephoneFile();

        /**
         * @return true is there is one or many incoming call waiting
         * new call, not anwsered or refused
         */
        bool incomingCallWaiting (void);

        /**
         * Notification of incoming call when you are already busy
         */
        void notificationIncomingCall (void);

        /*
         * Inline functions to manage speaker volume control
         * Read by main thread and AudioLayer thread
         * Write by main thread only
         * @return unsigned short	The volume value
         */
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        unsigned short getSpkrVolume (void) const {
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            return _spkr_volume;
        }

        /*
         * Inline functions to manage speaker volume control
         * Read by main thread and AudioLayer thread
         * Write by main thread only
         * @param spkr_vol	The volume value
         */
        void setSpkrVolume (unsigned short spkr_vol);

        /*
         * Inline functions to manage mic volume control
         * Read by main thread and AudioLayer thread
         * Write by main thread only
         * @return unsigned short	The volume value
         */
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        unsigned short getMicVolume (void) const {
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            return _mic_volume;
        }

        /*
         * Inline functions to manage mic volume control
         * Read by main thread and AudioLayer thread
         * Write by main thread only
         * @param mic_vol	The volume value
         */
        void setMicVolume (unsigned short mic_vol);

        /**
         * Init default values for the different fields in the config file.
         * Fills the local _config (Conf::ConfigTree) with the default contents.
         * Called in main.cpp, just before Manager::init().
         */
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        void initConfigFile (std::string alternate="");
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        /**
         * Tell if the setup was already loaded
         * @return bool True if yes
         *		  false otherwise
         */
        bool hasLoadedSetup() {
            return _setupLoaded;
        }

        /**
         * Return a new random callid that is not present in the list
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         * @return std::string A brand new callid
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         */
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        std::string getNewCallID();
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        /**
         * Get the current call id
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         * @return std::string	The call id or ""
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         */
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        const std::string& getCurrentCallId() const;
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        /**
         * Check if a call is the current one
         * @param callId the new callid
         * @return bool   True if the id is the current call
         */
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        bool isCurrentCall (const std::string& callId);