/*

* 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 the License "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:   Streaming handler*

*/

// Version : %version: 2 %

#ifndef CVCXNSSTREAMINGHANDLER_H

#define CVCXNSSTREAMINGHANDLER_H

#include <e32base.h>

#include <mpxplaybackutility.h>

#include <mpxplaybackobserver.h>

class CVcxNsContent;

class CVcxNsUiEngine;

/**

*  Streaming handler. Listens playback events and

*  sets and gets the play positions for the stream

*

*  @lib vcxnsuiengine.lib

*/

NONSHARABLE_CLASS( CVcxNsStreamingHandler ) : public CBase,

                                              public MMPXPlaybackObserver,

                                              public MMPXPlaybackCallback

    {

public:

    static CVcxNsStreamingHandler* NewL( CVcxNsUiEngine& aUiEngine );

    virtual ~CVcxNsStreamingHandler();

    /**

     * Start listening messages for a stream.

     * 

     * @param aContent Content to be watched.

     */

    void HandleOpenStreamL( CVcxNsContent* aContent );

    /**

     * Stop listening messages for a stream.

     */

    void HandleCloseStream();

// From MMPXPlaybackObserver

    /**

     * From MMPXPlaybackObserver

     * Handle playback message

     *

     * @since 3.1

     * @param aMessage playback message

     * @param aErr system error code.

     */

    void HandlePlaybackMessage( CMPXMessage* aMessage, TInt aError );

// From MMPXPlaybackCallback

    /**

     *  From MMPXPlaybackCallback

     *  Handle playback property.

     *

     *  @since S60 3.2.3

     *  @param aProperty the property

     *  @param aValue the value of the property

     *  @param aError error code

     */

    void HandlePropertyL(TMPXPlaybackProperty aProperty,

                                TInt aValue, 

                                 TInt aError);

    /**

     *  From MMPXPlaybackCallback

     *  Method is called continously until aComplete=ETrue, signifying that 

     *  it is done and there will be no more callbacks.

     *  Only new items are passed each time.

     *

     *  @since S60 3.2.3

     *  @param aPlayer UID of the subplayer

     *  @param aSubPlayers a list of sub players

     *  @param aComplete ETrue no more sub players. EFalse more subplayer

     *                   expected

     *  @param aError error code

     */

    void HandleSubPlayerNamesL(TUid aPlayer, 

                                       const MDesCArray* aSubPlayers,

                                       TBool aComplete,

                                       TInt aError);

    /**

     *  From MMPXPlaybackCallback

     *  Call back of media request.

     *

     *  @since S60 3.2.3

     *  @param aMedia media 

     *  @param aError error code    

     */

    void HandleMediaL(const CMPXMedia& aProperties,

                              TInt aError);

private:

    CVcxNsStreamingHandler( CVcxNsUiEngine& aUiEngine );

    void ConstructL();

    /**

     * Handle playback message

     * 

     * @param aMessage playback message

     */

    void DoHandlePlaybackMessageL( const CMPXMessage& aMessage );

    /**

     * Handle state change message.

     * 

     * @param aMessage playback message

     */

    void HandleStateChangedL( const CMPXMessage& aMessage );

    /**

     * Handle property change message.

     * 

     * @param aMessage playback message

     */

    void HandlePropertyChangedL( const CMPXMessage& aMessage );

    /**

     * Seek To Last PosL

     */

    void SeekToLastPosL();

    /**

     * Store Last PosL

     */

    void StoreLastPosL();

    /**

     * Get the current stream's duration

     */

    void GetDurationL();

     /**

      * MMPXPlaybackUtility

      * 

      * own.

      */

    MMPXPlaybackUtility* iPlaybackUtility;

    /**

     * CVcxNsContent

     * 

     * not own.

     */

    CVcxNsContent* iContent;

    /**

     * CVcxNsUiEngine

     */

    CVcxNsUiEngine& iUiEngine;

    /**

     * Should the last position be resumed when 

     * playback has been initialized

     */

    TBool iLastPosPending;

    /**

     * Position to be resumed, if the

     * iLastPosPending has been set.

     */

    TInt iResumePos;

    /**

     * Playback state.

     */

    TInt iCurrentState;

    /**

     * Played stream's total duration.

     */

    TInt iDuration;

    };

#endif // CVCXNSSTREAMINGHANDLER_H