/*

* Copyright (c) 2004-2006 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:  Class for NGA Drawer.

*

*/

#ifndef CVTENGDRAWNGA_H

#define CVTENGDRAWNGA_H

//  INCLUDES

//#include <videorenderer.h>

#include <Posting_Surface.h>

#include <Posting_Surface_Factory.h>

#include <pixelformats.h>

//#include <videoframebuffer.h>

// GCE Surface

#include "graphics/surfacemanager.h"

#include "graphics/surface.h"

#include "graphics/surfaceupdateclient.h"

#include "CVtEngRemoteVideo.h"

#include "TVtEngRenderConfigNGA.h"

// FORWARDS

class TDisplaySinkParamsNGA;

// CONSTANTS AND MACROS

const TInt KVtEngMaxSurfaceBuffers = 2;

NONSHARABLE_CLASS( TVTSurfaceBuffer )

    {

    public:

    /**

    * C++ constructor

    */

    TVTSurfaceBuffer( TUint8* aBuffer = NULL, TInt aSurfaceNo = KErrNotFound );

    /**

    * Returns pointer reference to stored buffer.

    */

    TUint8* &Buffer();

    /**

    * Returns surface no..

    */

    TInt SurfaceNo();

    void Set( TUint8* aBuffer, TInt aSurfaceNo );

    void UnSet();

    private:

    // Pointer's pointer to buffer

    TUint8* iBuffer;

    TInt iSurfaceBufferNo;

    };    

/**

*  Buffer waiter observer API

*

*  @lib videoteleng.lib

*  @since Series 60 MCL

*/

NONSHARABLE_CLASS( MVtEngNGABufferWaiterObserver )

    {

    public: // New methods

        /**

        * Buffer fetched without errors.

        * @param aBuffer Pointer to fetched buffer.

        */

        virtual void BufferReadyL(

                TVTSurfaceBuffer* aBuffer ) = 0;

        /**

        * Buffer fetch error.

        * @param aError Error code.

        */

        virtual void FetchError( TInt aError ) = 0;

    };

/**

*  DNGA drawer

*

*  @lib videoteleng.lib

*  @since Series 60 MCL

*/

NONSHARABLE_CLASS( CVtEngDrawNGA ) : 

    public CVtEngRemoteVideo::CVtEngDraw,

    public MVtEngNGABufferWaiterObserver

    {

    public: // constructor and destructor

        /**

        * Two-phased constructor.

        * @param aObserver call back interface to Display Sink

        * @return instance of CVtEngDrawDSA

        */

        static CVtEngDrawNGA* NewL( MDisplaySinkObserver* aObserver );

        // Destructor

        ~CVtEngDrawNGA();

    private: // construction

        /**

        * C++ constructor as private.

        * @param aObserver callback interface for Display Sink

        */

        CVtEngDrawNGA( MDisplaySinkObserver* aObserver );

    private: // from CVtEngDraw

        /**

        * @see CVtEngDraw::BaseConstructL

        */

        void BaseConstructL();

        /**

        * @see CVtEngDraw::CreateSinkL

        */

        MDisplaySink* CreateSinkL();

        /**

        * @see CVtEngDraw::BaseRefreshL

        */

        void BaseRefreshL();

        /**

        * @see CVtEngDraw::BaseRefreshBitmapsL

        */

        void BaseRefreshBitmapsL();

        /**

        * @see CVtEngDraw::BaseDoCancel

        */

        void BaseDoCancel();

        /**

        * @see CVtEngDraw::BaseVerifyConfigL

        */

        void BaseVerifyConfigL();

        /**

        * @see CVtEngDraw::BaseRestartL

        */

        void BaseRestartL();

        /**

        * @see CVtEngDraw::BaseAbortNow

        */

        void BaseAbortNow();

        /**

        * @see CVtEngDraw::BaseStartDrawL

        */

        void BaseStartDrawL();

        /**

        * @see CVtEngDraw::BaseStopDraw

        */

        void BaseStopDraw();

        /**

        * @see CVtEngDraw::BaseSetConfigL

        */

        void BaseSetConfigL( const TVtEngRenderConfig& aConfig );

        /**

        * @see CVtEngDraw::BaseSetUIForegroundL

        */

        void BaseSetUIForegroundL( TBool aForeground );

        /**

        * @see CVtEngDraw::BaseVideoFrameSizeChangedL

        */

        void BaseVideoFrameSizeChangedL( const TSize& );

        /**

        * @see CVtEngDraw::BaseRequestLastFrame

        */        

        void BaseRequestLastFrame();

        /**

        * @see CVtEngDraw::Config

        */

        TVtEngRenderConfig& Config();

    private: // New mothod

        /**

        * Returns reference to sink.

        */

        MDisplaySink& DisplaySink();     

        /**

        * Base construct implementation

        */

        void DoBaseConstructL();

        /**

        * Base start drawing implementation

        */

        void DoBaseStartDrawL();             

        /**

        * Sets given buffer available to display sink.

        */

        void SetAvailableToSink( TVTSurfaceBuffer* aBuffer );     

        /**

        * Update sink params implementation.

        */

        void DoUpdateSinkParamsL();

        /**

        * Updates sink params.

        */

        void UpdateSinkParamsL();   

        /**

        * Create surface

        */        

        void CreateSurfaceL();

        /**

        * Create surface implementation

        */        

        void DoCreateSurfaceL();        

        static TInt SurfaceBuffer0Ready(TAny* aAny);

        static TInt SurfaceBuffer1Ready(TAny* aAny);

        TBool DoSurfaceBuffer0Ready();

        TBool DoSurfaceBuffer1Ready();

    public: //from MVtEngNGABufferWaiterObserver

        /**

        * @see MVtEngNGABufferWaiterObserver::BufferReadyL

        */

        void BufferReadyL( TVTSurfaceBuffer* aBuffer );

        /**

        * @see MVtEngNGABufferWaiterObserver::FetchError

        */

        void FetchError( TInt aError );

    private:

        /**

        *  @see CActive::RunL

        */       

        void RunL();

    private: // New functions

        /**

        * Fills TDisplaySinkParamsNGA struct

        */

        void GetSinkParams( TDisplaySinkParamsNGA& aSinkParams );

    private: //inner class

        // Buffer class for storing buffer.

        NONSHARABLE_CLASS( TVtEngBuffer )

            {

            public:

                /**

                * C++ constructor

                */

                TVtEngBuffer();

                /**

                * Sets buffer

                */

                void Set( TVTSurfaceBuffer* aBuffer );                

                /**

                * Unsets buffer

                */

                void UnSet();

                /**

                * Returns ETrue if buffer is set

                */

                TBool IsSet() const;

                /**

                * Returns pointer reference to stored buffer.

                */

                TVTSurfaceBuffer* &SurfaceBuffer();

                /**

                * Returns pointer reference to stored buffer.

                */

                TUint8* &Buffer();

            private:

                // Pointer's pointer to buffer

                TUint8* iBuffer;

                TVTSurfaceBuffer* iSurfaceBuffer;

            };    

        // Waiter class for asynchronous events.

        NONSHARABLE_CLASS( CVtEngBufferWaiter ) : public CActive

            {

            public:

                /**

                * C++ constructor.

                */

                CVtEngBufferWaiter( //CVideoRenderer& aVideoRenderer,

                    MVtEngNGABufferWaiterObserver& aObserver );

                /**

                * Destructor, frees all resources allocated by this instance.

                */

                ~CVtEngBufferWaiter();

                /**

                * Fetch new buffer (also activates listening).

                */

                TInt FetchBuffer();

                /**

                * One SurfaceBuffer is available

                */

                void BufferAvailable(TVTSurfaceBuffer& aBuffer); 

            private: // new methods

                /**

                * Activate buffer listening (also calls CActive::SetActive()).

                */

                void Activate();

            private: // from CActive

                /**

                * @see CActive::RunL()

                */

                void RunL();

                /**

                * @see CActive::DoCancel()

                */

                void DoCancel();

            private: // data

                // Video frame renderer (not owned)

                //CVideoRenderer* iVideoRenderer;

                // BufferWaiter observer who gets informed about buffers

                MVtEngNGABufferWaiterObserver* iObserver;      

                //Avaiable surface buffers

                TVTSurfaceBuffer* iBuffers[KVtEngMaxSurfaceBuffers];         

            };

        // Surface Buffer Active Call back.

        NONSHARABLE_CLASS( CActiveCallBack ) : public CActive

            {

            public:

                CActiveCallBack( TCallBack aCallBack, TInt aPriority): CActive(aPriority), iCallBack(aCallBack) 

                    {};

                CActiveCallBack();

            public: // Functions from base classes

                void SetActive() 

                    { 

                    CActive::SetActive();

                    }; 

                void RunL() 

                    { 

                    iCallBack.CallBack();

                    };

                void DoCancel() 

                    {};

            private: // Data

                TCallBack iCallBack;

            };

    private: // data        

        //Video frame renderer

        //CVideoRenderer *iVideoRenderer;

        RSurfaceManager* iSurfaceManager;

        RSurfaceUpdateSession iSurfaceUpdateSession;

        //Surface pixel format

        TUidPixelFormat iSurfaceFormat;

        RChunk* iSurfaceChunk;

        TInt8* iChunkBuffer0;

        TInt8* iChunkBuffer1;

        TVTSurfaceBuffer iSurfaceBuffer0;

        TVTSurfaceBuffer iSurfaceBuffer1;

        //CActiveCallBack* iSurfaceBufferAo0; 

        //CActiveCallBack* iSurfaceBufferAo1;

        CActiveCallBack* iCallBackTable[KVtEngMaxSurfaceBuffers];

        //NGA surface id

        TSurfaceId iSurfaceId;

        //NGA surface has created

        TBool	iSurfaceCreated;        

        // Buffer waiter instance

        CVtEngBufferWaiter* iBufferWaiter;              

        // Surface buffers

        TVtEngBuffer

            iSurfaceBuffers[ MDisplaySink::EFirstBitmap + KVtEngMaxSurfaceBuffers ];   

        TSglQue<TVtEngBuffer> iWaitingBuffers; // buffers waiting to be submitted

        TBool iSubmitPending;

        // Configuration

        TVtEngRenderConfigNGA iConfig;

        // Time stamp for surface update

        TTimeStamp iTimeStamp;

    };

#endif // CVTENGDRAWDSA_H