1 // Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // 

    15 

    16 #ifndef APIWRAPPER_H

    17 #define APIWRAPPER_H

    18 

    19 #ifndef PSU_PLATFORMTHREADING_H

    20 #include "platformthreading.h"

    21 #endif

    22 

    23 #ifndef PSU_PLATFORMTYPES_H

    24 #include "platformtypes.h"

    25 #endif

    26 #include "remotefunctioncall.h"

    27 

    28 class RemoteFunctionCall;

    29 class MGraphicsVHWCallback;

    30 

    31 class APIWrapperStack

    32 {

    33     public:

    34         APIWrapperStack(): iStack( NULL ), iStackIndex(0), iStackSize(0)

    35         {

    36         }

    37 

    38         bool InitStack( int stackSize )

    39         {

    40             if ( iStack )

    41             {

    42                 delete [] iStack;

    43             }

    44 

    45             iStack = (char*)new unsigned long[(stackSize+3)/4];

    46             iStackIndex = 0;

    47             iStackSize = stackSize;

    48             return iStack != NULL;

    49         }

    50 

    51         void* AllocFromStack( int size, int alignment )

    52         {

    53             unsigned int adjustedIndex = RemoteFunctionCallData::AlignIndex( iStackIndex, alignment );

    54             if ( adjustedIndex + size < iStackSize )

    55             {

    56                 iStackIndex = adjustedIndex + size;

    57                 return (void*)(iStack + adjustedIndex);

    58             }

    59             else

    60             {

    61                 return NULL;

    62             }

    63         }

    64 

    65         void ClearStack()

    66         {

    67             iStackIndex = 0;

    68         }

    69 

    70         ~APIWrapperStack()

    71         {

    72             delete [] iStack;

    73             iStack = NULL;

    74         }

    75 

    76     private:

    77 

    78         char* iStack;

    79         unsigned int iStackIndex;

    80         unsigned int iStackSize;

    81 };

    82 

    83 

    84 class APIWrapper

    85 {

    86 public:

    87 	virtual ~APIWrapper();

    88 

    89 	//void SetCurrentRFC(  );

    90 

    91 	virtual void SetProcessInformation( TUint32 aProcess, TUint32 aThread ) = 0;

    92 	virtual void Cleanup( TUint32 aProcess, TUint32 aThread ) = 0;

    93     virtual int DispatchRequest( unsigned long aCode ) = 0;

    94 

    95 protected:

    96     APIWrapper( RemoteFunctionCallData& currentFunctionCall, 

    97 		APIWrapperStack* stack,

    98         void* result,

    99 		MGraphicsVHWCallback* serviceIf);

   100 

   101 	virtual int WriteReply();

   102 

   103 protected:

   104 	RemoteFunctionCallData& m_currentFunctionCallData;

   105     void* m_currentResult;

   106     APIWrapperStack* iStack;

   107     MGraphicsVHWCallback* iServiceIf;

   108 };

   109 

   110 #endif