/*

* Copyright (c) 2002 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:  Abstract base class for FramePositioningControl

*

*/

#ifndef CMMAFRAMEPOSITIONINGCONTROL_H

#define CMMAFRAMEPOSITIONINGCONTROL_H

// EXTERNAL INCLUDES

//  INTERNAL INCLUDES

#include "cmmacontrol.h" // base class

// FORWARD DECLARATIONS

class CMMAPlayer;

// CONSTANTS

// Constant for control name. Name is used in Java side to instantiate

// Java Class which uses CMMAFramePositioningControl.

_LIT(KMMAFramePositioningControlName, "FramePositioningControl");

//  CLASS DECLARATION

/**

*   Abstract base class for FramePositioningControls

*/

NONSHARABLE_CLASS(CMMAFramePositioningControl): public CMMAControl

{

public:

    /**

     * Destructor.

     */

    ~CMMAFramePositioningControl();

protected:

    /**

     * Constructor.

     */

    CMMAFramePositioningControl(CMMAPlayer* aPlayer);

public: // From CMMAControl

    const TDesC& ClassName() const;

public: // New methods

    virtual TInt SeekL(TInt aFrameNumber) = 0;

    virtual TInt SkipL(TInt aFramesToSkip) = 0;

    virtual void MapFrameToTimeL(TInt aValue, TInt64* aMediaTime) = 0;

    virtual TInt MapTimeToFrameL(TInt64* aMediaTime) = 0;

protected: // New methods

    /**

     * Clamp media time between 0 and duration of media

     * @param aMediaTime media time value to clamp

     * @return KErrNotFound if duration of media is not known,

     *         otherwise KErrNone.

     */

    virtual TInt ClampMediaTime(TInt64& aMediaTime);

private: // Data

    // To be used by this class and not by children.

    CMMAPlayer* iPlayer;

};

#endif // CMMAFRAMEPOSITIONINGCONTROL_H