/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: Telephony Multimedia Service

 *

 */

#ifndef TMSAUDIODTMFTONEPLAYER_H

#define TMSAUDIODTMFTONEPLAYER_H

// INCLUDES

#include <glib.h>

#include <sounddevice.h>

#include "tmsdtmftoneplayerobserver.h"

// FORWARD DECLARATIONS

class CMMFDevSound;

// CLASS DECLARATION

/**

 *  Plays DTMF tones using media server

 */

namespace TMS {

class TMSAudioDtmfTonePlayer : public MDevSoundObserver

    {

public:

    // Constructors and destructor

    /**

     * Two-phased constructor.

     */

    static TMSAudioDtmfTonePlayer* NewL(TMSDTMFTonePlayerObserver& obsrvr,

            guint audioPreference, guint audioPriority);

    /**

     * Destructor.

     */

    virtual ~TMSAudioDtmfTonePlayer();

public:

    /**

     * Sets volume.

     * @param aVolume volume value or KDtmfSilent.

     * @return None.

     */

    void SetVolume(gint volume);

    /**

     * Starts playing given dtmf tone infinitely.

     * @param aTone Tone to be played.

     * @return None.

     */

    void PlayDtmfTone(TDes& tone);

    /**

     * Cancels playing.

     * @param None.

     * @return None.

     */

    void Cancel();

public:

    //From MDevSoundObserver

    /**

     * See MDevSoundObserver

     */

    void InitializeComplete(TInt aError);

    /**

     * See MDevSoundObserver

     */

    void ToneFinished(TInt aError);

    /**

     * See MDevSoundObserver

     */

    void BufferToBeFilled(CMMFBuffer* /*aBuffer*/) {}

    /**

     * See MDevSoundObserver

     */

    void PlayError(TInt /*aError*/) {}

    /**

     * See MDevSoundObserver

     */

    void BufferToBeEmptied(CMMFBuffer* /*aBuffer*/) {}

    /**

     * See MDevSoundObserver

     */

    void RecordError(TInt /*aError*/) {}

    /**

     * See MDevSoundObserver

     */

    void ConvertError(TInt /*aError*/) {}

    /**

     * See MDevSoundObserver

     */

    void DeviceMessage(TUid /*aMessageType*/, const TDesC8& /*aMsg*/) {}

protected:

    /**

     * C++ default constructor.

     */

    TMSAudioDtmfTonePlayer(TMSDTMFTonePlayerObserver& obsrvr,

            guint audioPreference, guint audioPriority);

    void ConstructL();

    /**

     * Normalize tone.

     * @param aTone dtmf tone.

     * @return None.

     */

    void Normalize(TChar& tone);

private:

    //new functions

    /**

     * Converts the given value to the one that matches tha range used by

     * CMMFDevSound. The CMMFDevSound uses valuess that can from 0 to the

     * value returned by a call to CMMFDevSound::MaxVolume().

     */

    gint ConvertVolumeLevel(gint volume);

protected:

    // Data

    // Current volume setting.

    gint iVolume;

    // DTMF player instance

    CMMFDevSound* iDTMFPlayer;

    TMSDTMFTonePlayerObserver& iObserver;

    guint iPref;

    guint iPrior;

    };

} //namespace TMS

#endif // TMSAUDIODTMFTONEPLAYER_H

// End of File