tvout/tvoutengine/inc/glxhdmisurfaceupdater.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 27 May 2010 12:51:42 +0300
changeset 33 1ee2af37811f
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child 36 6481344a6d67
permissions -rw-r--r--
Revision: 201019 Kit: 2010121
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/* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:    Handles & propogates UI state change notifications.
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*
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*/
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#ifndef GLXHDMISURFACEUPDATER_H_
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#define GLXHDMISURFACEUPDATER_H_
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#include <w32std.h>
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#include <fbs.h>
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// GCE Surface
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#include "graphics/surfacemanager.h"
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#include "graphics/surface.h"
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#include "graphics/surfaceupdateclient.h"
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#include <graphics/surfaceconfiguration.h>
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// forward decleration
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class CGlxActiveCallBack;
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class CGlxHdmiDecoderAO;
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class CImageDecoder;
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class TSurfaceConfiguration;
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class MGlxGenCallback
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    {
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public:
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    virtual void DoGenCallback() = 0;
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    };
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class CGlxHdmiSurfaceUpdater: public CBase
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    {
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public:
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    /*
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     * NewL
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     */
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    static CGlxHdmiSurfaceUpdater* NewL(RWindow* aWindow, const TDesC& aImageFile, 
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            CFbsBitmap* aFsBitmap, MGlxGenCallback* aCallBack);
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    /*
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     * Destructor
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     */
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    ~CGlxHdmiSurfaceUpdater();
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public:
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    /*
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     * This is to cancel the active object from decoding 
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     */
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    void HandleRunL(TRequestStatus& aStatus);
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    /*
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     * This updates the new image.
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     */
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    void UpdateNewImageL(const TDesC& aImageFile,CFbsBitmap* aFsBitmap);
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    /*
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     * Activate Zoom 
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     */
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    void ActivateZoom(TBool aAutoZoomOut);
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    /*
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     * Deactivate Zoom 
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     */
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    void DeactivateZoom();
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    /*
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     * Zoom in our out depending on parameter 
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     */
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    void Zoom(TBool aZoom);
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    /*
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	ShiftToCloningMOde
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     */
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    void ShiftToCloningMode();
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    /*
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	ShiftToPostingMode
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     */
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    void ShiftToPostingMode();
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private:
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    /*
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     * Constructor 
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     */
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    CGlxHdmiSurfaceUpdater(RWindow* aWindow, MGlxGenCallback* aCallBack);
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    /*
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     * ConstructL()
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     */
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    void ConstructL(CFbsBitmap* aFsBitmap,const TDesC& aImageFile);   
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    /*
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     * Create a New surface with given size
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     */
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    void CreateSurfaceL();
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    /*
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     * @param1 size 
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     */
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    void MapSurfaceL();
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    /*
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     * This fundtion wont be called , could be used if double buffering is planned in future
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     * to start the second decoder AO and update the surface with a new session. 
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     */
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    static TInt SurfBuffer0Ready(TAny* aObject);    
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    /*
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     * Call a refresh on the screen  
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     */
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    void Refresh();
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   118
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    /*
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     * Dump the buffer on to the surface stride 
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     */
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    void SwapBuffers();
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   123
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    /*
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     * Release contents 
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     */
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    void ReleaseContent();
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   128
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    /*
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     * Create bitmap  
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     */
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    void CreateBitmapL();
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    /*
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     * Create an image decoder with given file
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     * @param1 - Image file 
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     */
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    void CreateImageDecoderL();
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    /*
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     * Creating all enablers for HDMI
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     * @param1 if creating a surface is required, 
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     * by default it is not required
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     */
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    void CreateHdmiL(TBool aCreateSurface = ETrue);
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    /*
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     * This if for zoom timer timeout
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     */
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    static TInt TimeOut(TAny* aSelf);
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   151
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    /*
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     * ModifySurface positions of the surface to be displayed on screen
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     */
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    void ModifySurfacePostion();
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    /*
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     * Process the image for TV 
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     */
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    void ProcessTvImage();
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    /*
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     * Shows the FS thumbnail first before showing 
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     * Decoded HD image 
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     */
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    void ShowFsThumbnailL();
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    /*
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     * Recalculate the size for png/bmp as decoder fails to 
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     * decode for desired size 
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     */
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    TSize ReCalculateSizeL();
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    /*
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     * If the image format is non jpeg, then we need to calculate as per
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     * reduction factor and reduced size as what the decoder is going to return us
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     * This function returns if that needs to be done. 
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     */
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    TBool DoesMimeTypeNeedsRecalculateL();
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    /*
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     * If the image format is non jpeg, then we need to scale the bitmap after it is
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     * decoded, as the return value would not fit the screen 
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     */
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    void ScaleDecodedBitmapL(TInt aBitmapIndex);
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    /*
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     * InitiateHDMI
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     */
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    void InitiateHdmiL(CFbsBitmap* aFsBitmap,const TDesC& aImageFile);
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private:
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    RWindow*        iWindow;                        // window object
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    CFbsBitmap*     iFsBitmap;                      // FS bitmap
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    MGlxGenCallback* iCallBack;                     // callback to the HdmiContainer window
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    HBufC*          iImagePath;                     // To store the image uri path
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    // GCE Surface
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    RSurfaceUpdateSession iSurfUpdateSession;
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    TSurfaceId              iSurfId;                // TSurfaceId                             
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    RSurfaceManager*        iSurfManager;           // RSurfaceManager
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    RChunk*                 iSurfChunk;             // RChunk
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    TInt                    iSurfaceStride;         // surface stride
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    TSurfaceConfiguration   iConfig;                // surface configuration for zoom
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    CFbsBitmap*         iDecodedBitmap[3];          // Array of Decoded bitmaps of the focussed image
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                                                    // 1 - contains FS/Grid Thumbnail, 2- HD image, 
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                                                    // (optional)3-Scaled png/bmp images
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    void*               iSurfBuffer;               // Surface buffer
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    CGlxActiveCallBack* iSurfBufferAO;             // Surface buffer AO 
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    //ICL
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    CGlxHdmiDecoderAO*  iGlxDecoderAO;              // Internal Image decoder AO              
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    CImageDecoder*      iImageDecoder;              // Image Decoder
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    RFs                 iFsSession;                 // RFs
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    TPoint      iLeftCornerForZoom;                 //  
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    CPeriodic*  iTimer;                             // Timer for Zoom   
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    // Various objects to store sizes and count
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    TSize       iTvScreenSize;                      // to store the Tv screen size
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    TSize       iTargetBitmapSize;                  // To Store the target bitmap size to display(as per Aspect Ratio)
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    // Various flags to store values
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    TBool       iZoom;                              // Is zoomed
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    TBool       iBitmapReady;                       // If the bitmap is decoded and ready
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    TBool       iAutoZoomOut;                       // If the UI has asked for auto zoomout
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    TBool       iSurfSessionConnected;              // If surface session is connected
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	TBool iShiftToCloning;
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    TBool       iShwFsThumbnail;                    // If the Fs thumbnail is to be shown before decoding HD images
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    TBool       iIsNonJpeg;                         // If the item is non jpeg
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#ifdef _DEBUG
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    TTime iStartTime;
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    TTime iStopTime;
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#endif   
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	// The bitmap index in the array of bitmaps
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    enum {
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        EFSBitmapIndex = 0,
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        EJpgDecodedBitmapIndex,
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		ENonJpgDecodedBitmapIndex
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        };
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    };
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#endif /* GLXHDMISURFACEUPDATER_H_ */