/*
 * Component Name: Headset Simulator
 * Author: Comarch S.A.
 * Version: 1.0
 * Copyright (c) 2010 Comarch S.A.
 *  
 * This Software is submitted by Comarch S.A. to Symbian Foundation Limited on 
 * the basis of the Member Contribution Agreement entered between Comarch S.A. 
 * and Symbian Foundation Limited on 5th June 2009 (“Agreement”) and may be 
 * used only in accordance with the terms and conditions of the Agreement. 
 * Any other usage, duplication or redistribution of this Software is not 
 * allowed without written permission of Comarch S.A.
 * 
 */

#ifndef HSAUDIOSERVER_H_
#define HSAUDIOSERVER_H_

#include <e32std.h>
#include <bt_sock.h>

/** Buffer size */
const TInt KHsSynchronousBufferLength = 128;

/**
 * @brief Server for SCO connections
 */
class CHsAudioServer : public CBase, public MBluetoothSynchronousLinkNotifier
{
public:
    /**
     * Two-phase constructor
     * @param aSocketServ socket server session
     * @param aPullAudio denotes if audio should be pulled
     * @return instance of class
     */
    static CHsAudioServer* NewL( RSocketServ& aSocketServ, TBool aPullAudio );

    /**
     * Two-phase constructor
     * @param aSocketServ socket server session
     * @param aPullAudio denotes if audio should be pulled
     * @return instance of class
     */
    static CHsAudioServer* NewLC( RSocketServ& aSocketServ, TBool aPullAudio );

    /**
     * Destructor
     */
    ~CHsAudioServer();

public:

    /**
     * Prepares audio server for incoming connections
     */
    void ListenL();

    /**
     * Connects audio server to the specified device
     * 
     * @param aAddr device's bluetooth address
     */
    void ConnectL( const TBTDevAddr &aAddr );

    /**
     * Closes current connections and prepares the server for the new one
     */
    void Disconnect();

    /**
     * Turns off audio server
     */
    void Shutdown();

    /**
     * Method allows to accept \ reject SCO connection establishment 
     * 
     * @param aPullAudio ETrue if SCO connection is supposed to be accepted 
     */
    void SetPullAudio( TBool aPullAudio );

    /**
     * Checks if client is connected
     * 
     * @return ETrue if client connected
     */
    TBool IsConnected();

    /**
     * Checks if server is ready for incoming requests
     * 
     * @return ETrue if server is ready
     */
    TBool IsListen();

private:

    /**
     * Constructor for performing 1st stage construction
     * 
     * @param aSocketServ socket server session
     * @param aPullAudio denotes if audio should be pulled
     */
    CHsAudioServer( RSocketServ& aSocketServ, TBool aPullAudio );

    /**
     * Constructor for performing 2nd stage construction
     */
    void ConstructL();

private:
    // Methods derived from MBluetoothSynchronousLinkNotifier

    void HandleSetupConnectionCompleteL( TInt aErr );

    void HandleDisconnectionCompleteL( TInt aErr );

    void HandleAcceptConnectionCompleteL( TInt aErr );

    void HandleSendCompleteL( TInt aErr );

    void HandleReceiveCompleteL( TInt aErr );

private:

    /** Session of socket server */
    RSocketServ& iSServ;

    /** SCO socket */
    CBluetoothSynchronousLink* iSCOSocket;

    /** Buffer for received data */
    TBuf8 <KHsSynchronousBufferLength> iReceiveBuffer;

    /** Buffer for data to be send */
    TBuf8 <KHsSynchronousBufferLength> iSendBuffer;

    /** Types of accepted SCO packets */
    TBTSyncPackets iAcceptedPackets;

    /** DevAddr of connected device */
    TBTDevAddr iAddr;

    /** Denotes if server is ready for incoming connections */
    TBool iListening;

    /** Denotes if client is connected */
    TBool iConnected;

    /** Denotes if audio should be transferred */
    TBool iPullAudio;
};

#endif /* HSAUDIOSERVER_H_ */