// Copyright (c) 2010 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:

// 

#ifndef KHRONOSAPIWRAPPER_H

#define KHRONOSAPIWRAPPER_H

#ifndef PSU_PLATFORMTHREADING_H

#include "platformthreading.h"

#endif

#ifndef PSU_PLATFORMTYPES_H

#include "platformtypes.h"

#endif

#include "requestbuffer.h"

class APIWrapperStack;

class RemoteFunctionCall;

class RemoteFunctionCallData;

class DriverAPIWrapper;

class OpenVGAPIWrapper;

class EGLAPIWrapper;

class OGLES11Wrapper;

#define KHRONOS_API_W_MULTITHREAD

#ifdef WIN32

#ifdef KHRONOSAPIWRAPPER_EXPORTS

#define KHRONOSAPIWRAPPER_API __declspec(dllexport)

#else

#define KHRONOSAPIWRAPPER_API __declspec(dllimport)

#endif

#else

#define KHRONOSAPIWRAPPER_API

#endif

class MGraphicsVHWCallback;

class KHRONOSAPIWRAPPER_API KhronosAPIWrapper: private MRequestBufferBookKeepingReader

{

    public:

        KhronosAPIWrapper( MGraphicsVHWCallback* aServiceIf, void* surfacebuffer,

            void* inputdata, void* outputdata );

        virtual ~KhronosAPIWrapper();

        void WorkerThread();

        unsigned long Execute();

        unsigned long InputParameterOffset();

        void SetInputBufferTail(uint32_t p_val);

        uint32_t InputBufferTail();

        void SetInputBufferHead(uint32_t p_val);

        uint32_t InputBufferHead();

        void SetInputBufferReadCount(uint32_t p_val);

        uint32_t InputBufferReadCount();

        void SetInputBufferWriteCount(uint32_t p_val);

        uint32_t InputBufferWriteCount();

        void IncrementInputBufferReadCount( TUint32 aReadCount );

        TUint32 InputMaxTailIndex();

        void SetInputMaxTailIndex( TUint32 aIndex );

		//For the purpose of wrappers that need each other's services

		DriverAPIWrapper* GetDriverWrapper() { return m_DriverAPIWrapper; }

		EGLAPIWrapper* GetEGLWrapper() { return m_EGLWrapper; }

    private:

//From MRequestBufferBookKeeping

        TUint32 GetWriteCount();

        void IncrementReadCount( TUint32 aReadCount );

        TUint32 GetReadCount();

        TUint32 BufferTail();

        void SetBufferTail( TUint32 aIndex );

        TUint32 BufferHead();

        TUint32 MaxTailIndex();

        void SetMaxTailIndex( TUint32 aIndex );

    protected:

        int HandleNextRequest();

        bool m_initDone;

        void* m_currentResult;

        void* m_currentInput;

        MGraphicsVHWCallback* iServiceIf;

        Psu::PLATFORM_THREAD_T m_threadHandle;

        Psu::PLATFORM_SEMAPHORE_T m_SemapHandle;

        bool m_exit;

        void* m_surfaceBuffer;

//Input buffer

        Psu::PLATFORM_MUTEX_T m_InputBufferMutex;

        uint32_t m_InputBufferTail;

        uint32_t m_InputBufferHead;

        uint32_t m_InputBufferReadCount;

        uint32_t m_InputbufferWriteCount;

        uint32_t m_InputBufferMaxTailIndex;

    private:

        RequestBufferReader* m_InputRequestBuffer;

        APIWrapperStack* iStack;

		TUint32 m_lastProcessId;

		TUint32 m_lastThreadId;

		int m_lastVgError;

		int m_lastEglError;

		DriverAPIWrapper* m_DriverAPIWrapper;

		OpenVGAPIWrapper* m_OpenVGWrapper;

		OGLES11Wrapper* m_OGLESWrapper;

		EGLAPIWrapper* m_EGLWrapper;

		RemoteFunctionCallData* iRFCData;

};

#endif