// Copyright (c) 2010 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:

//

/**

 @file

 @internalComponent

*/

#ifndef MMTPPLAYBACKINTERFACE_H

#define MMTPPLAYBACKINTERFACE_H

const TInt KPlaybackErrNone = 0;

const TInt KPlaybackErrDeviceBusy = (-8000);

const TInt KPlaybackErrDeviceUnavailable = (-8001);

const TInt KPlaybackErrParamInvalid = (-8002);

const TInt KPlaybackErrContextInvalid = (-8003);

/** Playback status */

enum TMTPPlaybackState

    {

    /** Playing */

    EPlayStatePlaying,

    /** Pause */

    EPlayStatePaused,

    /** Forward seeking */

    EPlayStateForwardSeeking,

    /** Backward seeking */

    EPlayStateBackwardSeeking,

    /** error state */

    EPlayStateError

    };

/** Playback events */

enum TMTPPlaybackEvent

    {

    EPlaybackEventNone,

    /** playback volume update */

    EPlaybackEventVolumeUpdate,

    /** playback object update */

    EPlaybackEventObjectUpdate,

    /** playback object index update */

    EPlaybackEventObjectIndexUpdate,

    /** player state update */

    EPlaybackEventStateUpdate,

    /** Last Event */

    EPlaybackEventEnd

    };

/** Playback command */

enum TMTPPlaybackCommand

    {

    EPlaybackCmdNone,

    EPlaybackCmdInitObject,

    EPlaybackCmdInitIndex,

    EPlaybackCmdPlay,

    EPlaybackCmdPause,

    EPlaybackCmdStop,

    EPlaybackCmdSkip,

    EPlaybackCmdSeekForward,

    EPlaybackCmdSeekBackward,

    EPlaybackCmdGetVolume,

    EPlaybackCmdGetVolumeSet,

    EPlaybackCmdSetVolume,

    EPlaybackCmdGetPosition,

    EPlaybackCmdSetPosition,

    EPlaybackCmdGetDuration,

    EPlaybackCmdGetState,

    EPlaybackCmdGetObject,

    EPlaybackCmdGetIndex,

    EPlaybackCmdEnd

    };

class CMTPPlaybackCommand;

class CMTPPlaybackEvent;

class MMTPPlaybackObserver

    {

public: 

    /**

     * Called when playback object is updated or 

     * playback object's position is updated 

     * in the active player instance.

     */

    virtual void HandlePlaybackEventL(CMTPPlaybackEvent* aEvent, TInt aErr = KPlaybackErrNone) = 0;

    };

class MMTPPlaybackCallback

    {

public:

    /**

     * Called when playback command is completed

     * 

     * @param aErr Complete error

     * @param aCmd Complete command

     */

    virtual void HandlePlaybackCommandCompleteL(CMTPPlaybackCommand* aCmd, TInt aErr = KPlaybackErrNone) = 0;

    };

class MMTPPlaybackControl

    {

public:

    /** 

    *  Create an Instance of MMTPPlaybackControl's implementation.

    */

    static MMTPPlaybackControl* NewL(MMTPPlaybackObserver& aObserver);

    /**

    *  Frees resource, and destroy the object itself.

    */

    virtual void Close()=0;

    /** 

    *  Issue player commands, with optional data.

    *  @param aCmd the command

    *  @param aCallback Call back function

    */

    virtual void CommandL(CMTPPlaybackCommand& aCmd, MMTPPlaybackCallback* aCallback = NULL) = 0;

    };

#endif // MMTPPLAYBACKINTERFACE_H

// End of File