/*

* Copyright (c) 2006-2007 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:  Video thumbnail provider.

 *

*/

#ifndef THUMBNAILVIDEOPROVIDER_H

#define THUMBNAILVIDEOPROVIDER_H

#include <ecom.h>

#include <tnevideoclipinfo.h>

#include "thumbnailprovider.h"

/**

 *  Video thumbnail provider plugin.

 *

 *  @since S60 v5.0

 */

class CThumbnailVideoProvider: public CThumbnailProvider, public CActive, 

    public MTNEVideoClipThumbObserver, public MTNEVideoClipInfoObserver

    {

public:

    /**

     * Two-phased constructor.

     *

     * @since S60 v5.0

     * @return New video thumbnail provider instance.

     */

    static CThumbnailVideoProvider* NewL();

    /**

     * Destructor

     *

     * @since S60 v5.0

     */

    virtual ~CThumbnailVideoProvider();

    /**

     * Function that will provide thumbnail from given parameters.

     *

     * @since S60 v5.0

     * @param aFs File server session

     * @param aFile Source image file.

     * @param aMimeType Mime-type of the clip to be processed.

     * @param aFlags Flags for thumbnail creation.

     * @param aDisplayMode Used display mode.

     */

    void GetThumbnailL( RFs& aFs, RFile64& aFile, const TDataType& aMimeType,

        const CThumbnailManager::TThumbnailFlags aFlags, const TDisplayMode

        aDisplayMode, const CThumbnailManager::TThumbnailQualityPreference aQualityPreference );

    /**

     * Function that will provide thumbnail from given parameters.

     *

     * @since S60 v5.0

     * @param aFs File server session

     * @param aBuffer Source image buffer.

     * @param aMimeType Mime-type of the clip to be processed.

     * @param aFlags Flags for thumbnail creation.

     * @param aDisplayMode Used display mode.

     */    

    void GetThumbnailL( RFs& aFs, TDesC8* aBuffer, const

        TDataType& aMimeType, const CThumbnailManager::TThumbnailFlags aFlags,

        const TDisplayMode aDisplayMode, const CThumbnailManager::TThumbnailQualityPreference aQualityPreference );     

    /**

     * Function that will provide thumbnail from given parameters.

     *

     * @since S60 v5.0

     * @param aFs File server session

     * @param aBuffer Source image buffer.

     */ 

    void GetThumbnailL( RFs& aFs, TDesC8& aBuffer);

    /**

     * Cancel a previous thumbnail request, if any.

     *

     * @since S60 5.0

     */

    void CancelGetThumbnail();

protected:

    /**

     * Notifies when video clip thumbnail is ready.

     *

     * @since S60 v5.0

     * @param aInfo Video clip info.

     * @param aError Error code.

     * @param aThumb Thumbnail image.

     */

    void NotifyVideoClipThumbCompleted( CTNEVideoClipInfo& aInfo, TInt aError,

        CFbsBitmap* aThumb );

    /**

     * Notifies when info about video clip is ready.

     *

     * @since S60 v5.0

     * @param aInfo Video clip info.

     * @param aError Error code.

     */

    void NotifyVideoClipInfoReady( CTNEVideoClipInfo& aInfo, TInt aError );

private:

    /**

     * C++ default constructor

     *

     * @since S60 v5.0

     * @return New video thumbnail provider instance.

     */

    CThumbnailVideoProvider();

    /**

     * Implements cancellation of an outstanding request.

     *

     * @since S60 v5.0

     */

    void DoCancel();

    /**

     * Handles an active object's request completion event.

     *

     * @since S60 v5.0

     */

    void RunL();

private:

    // data

    /**

     * Video clip info.

     */

    CTNEVideoClipInfo* iVideoClipInfo;

    RTimer iTimer;

    TBool iTimeout;

};

#endif // THUMBNAILVIDEOPROVIDER_H