--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicsdeviceinterface/directgdiadaptation/hwsrc/directgdidriverprocessstate.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,123 @@
+// Copyright (c) 2007-2009 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:
+// directhdidriverprocessstate.h
+// 
+//
+
+#ifndef _DIRECTGDIDRIVERPROCESSSTATE_H_
+#define _DIRECTGDIDRIVERPROCESSSTATE_H_
+
+/**
+@file
+@internalComponent
+*/
+
+#include "directgdiadapter.h"
+#include <graphics/sgimage.h>
+#include <EGL/egl.h>
+#include <VG/openvg.h>
+#include <e32base.h>
+
+
+/**
+Function pointers for use with eglGetProcAddress for creation and deletion of EGLImages and creation of VGImages
+ */
+typedef EGLImageKHR (*TeglCreateImageKHRTypefPtr) (EGLDisplay dpy, EGLContext ctx, EGLenum aTarget, EGLClientBuffer buffer, EGLint*attrib_list);
+typedef EGLBoolean (*TeglDestroyImageKHRTypefPtr) (EGLDisplay dpy, EGLImageKHR image);
+typedef EGLBoolean (*TvgCreateEGLImageTargetKHRTypefPtr) (VGeglImageKHR image);
+
+/**
+Helper class used by CDirectGdiDriverProcessState to group together related EGL and VG images.
+ */
+NONSHARABLE_CLASS(CImageSourceData): public CBase
+	{
+public:
+	CImageSourceData(const TSgDrawableId& aSgImageId, EGLImageKHR aEglImage, VGImage aVgImage);
+	virtual ~CImageSourceData();
+	
+	inline const TSgDrawableId& SgImageId() const; 
+	inline EGLImageKHR EglImage() const;
+	inline VGImage VgImage() const;
+	inline TInt Open();
+	inline TInt Close();	
+	
+private:
+	TSgDrawableId iSgImageId;
+	EGLImageKHR iEglImage;
+	VGImage iVgImage;
+	TInt iRefCount;	
+	};
+
+
+
+/**
+Class for storing the state of CDirectGdiDriver objects within the current process. This class is 
+responsible for maintaining an instance count of the number of drivers open in this process. There may 
+be more than one thread that creates and opens a driver in this process. This class initializes EGL and  
+terminates it using an instance count, as EGL terminate should not be called until all drivers in this 
+process have been closed, not when each thread closes as another thread may be using EGL in the same
+process.
+
+This class is also responsible for storing a list of all EGLImageKHR objects and associated RSgImage IDs
+created in this process, as there is a restriction that an EGLImageKHR can only be created
+from a particular RSgImage once per process. This allows EGL images that have already been created
+from RSgImages to be shared among threads. The list of EGL images is created on a shared process heap
+so that it can be shared between all threads.
+
+Users of this class should call CreateVGImageFromSgImage
+ */
+NONSHARABLE_CLASS(XDirectGdiDriverProcessState): public CBase
+	{
+public:
+	XDirectGdiDriverProcessState();	
+	virtual ~XDirectGdiDriverProcessState();
+		
+	TInt Initialize(EGLDisplay aDisplay);
+	TInt CreateVgImage(EGLDisplay aDisplay, VGImage& aVgImageRet, const RSgImage& aSgImage);
+	TInt DestroyVgImage(EGLDisplay aDisplay, VGImage aVgImage);
+	
+	void OpenDriver();
+	void CloseDriver(EGLDisplay& aDriverEglDisplay);
+	
+	inline TInt MutexCreationStatus() const;
+	
+private:	
+	TInt CheckAllEglExtensions(EGLDisplay aDisplay) const ;
+	TInt CheckForEglExtension(EGLDisplay aDisplay, const TDesC8& aExtensionString) const;
+	
+	// Always use the mutex iImagesMutex around the following methods
+	TBool ImageExists(const RSgImage& aSgImage, VGImage& aVgImageRet);
+	CImageSourceData* FindImage(const RSgImage& aSgImage);
+	TInt AddImage(const RSgImage& aSgImage, EGLImageKHR aEglImage, VGImage aVgImage);
+	TInt RemoveImage(EGLDisplay aDisplay, VGImage aVgImage);
+		
+	TInt iDriverInstanceCount;
+	RHeap* iLocalHeap;		
+	RPointerArray<CImageSourceData> iImages;
+	RMutex iMutex;
+	// Holds the error state for creating the mutex in the constructor, so that it can be reported
+	// outside of the constructor.
+	TInt iCreateMutexErr;	
+	TBool iCheckedExtensionsAvailable;
+	
+	// Function pointers for creation and destruction of EGLImageKHR and creation of VGImage
+	TeglCreateImageKHRTypefPtr iPfnEglCreateImageKHR;
+	TeglDestroyImageKHRTypefPtr iPfnEglDestroyImageKHR;
+	TvgCreateEGLImageTargetKHRTypefPtr iPfnVgCreateImageTargetKHR;
+	};
+
+
+#include "directgdidriverprocessstate.inl"
+
+#endif // _DIRECTGDIDRIVERPROCESSSTATE_H_