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103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: Native driver for dxg implementation
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* FILE: win32ss/reactx/dxg/ddsurf.c
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* PROGRAMER: Sebastian Gasiorek (sebastian.gasiorek@reactos.org)
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*/
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#include <dxg_int.h>
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/*++
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* @name DxDdLock
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* @implemented
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*
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* The function DxDdLock locks the surface and calls
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* MapMemory driver function to assign surface memory.
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* Surface memory is returned in mapMemoryData.fpProcess variable
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*
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* @param HANDLE hSurface
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* Handle to DirectDraw surface
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*
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* @param PDD_LOCKDATA puLockData
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* Structure with lock details
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*
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* @param HDC hdcClip
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* Reserved
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*
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* @return
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* Returns DDHAL_DRIVER_HANDLED or DDHAL_DRIVER_NOTHANDLED.
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*
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* @remarks.
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* Missing lock data and error handling.
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*--*/
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DWORD
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NTAPI
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DxDdLock(HANDLE hSurface,
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PDD_LOCKDATA puLockData,
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HDC hdcClip)
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{
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PEDD_SURFACE pSurface;
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PEDD_DIRECTDRAW_LOCAL peDdL;
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PEDD_DIRECTDRAW_GLOBAL peDdGl;
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DD_MAPMEMORYDATA mapMemoryData;
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pSurface = (PEDD_SURFACE)DdHmgLock(hSurface, ObjType_DDSURFACE_TYPE, TRUE);
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peDdL = pSurface->peDirectDrawLocal;
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peDdGl = peDdL->peDirectDrawGlobal2;
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// Map memory if it's not already mapped and driver function is provided
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if (!peDdL->isMemoryMapped && (peDdGl->ddCallbacks.dwFlags & DDHAL_CB32_MAPMEMORY))
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{
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mapMemoryData.bMap = 1;
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mapMemoryData.hProcess = (HANDLE)-1;
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mapMemoryData.fpProcess = 0;
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mapMemoryData.lpDD = (PDD_DIRECTDRAW_GLOBAL)peDdGl;
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peDdGl->ddCallbacks.MapMemory(&mapMemoryData);
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if (!mapMemoryData.ddRVal)
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{
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peDdL->isMemoryMapped = 1;
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peDdL->fpProcess2 = mapMemoryData.fpProcess;
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}
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}
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if (pSurface)
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{
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InterlockedExchangeAdd((LONG*)&pSurface->pobj.cExclusiveLock, 0xFFFFFFFF);
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}
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puLockData->ddRVal = DD_OK;
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return DDHAL_DRIVER_HANDLED;
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}
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/*++
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* @name DxDdUnlock
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* @unimplemented
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*
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* The function DxDdUnlock releases the lock from specified surface
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*
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* @param HANDLE hSurface
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* Handle to DirectDraw surface
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*
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* @param PDD_UNLOCKDATA puUnlockData
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* Structure with lock details
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*
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* @return
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* Returns DDHAL_DRIVER_HANDLED or DDHAL_DRIVER_NOTHANDLED.
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*
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* @remarks.
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* Stub
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*--*/
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DWORD
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NTAPI
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DxDdUnlock(HANDLE hSurface,
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PDD_UNLOCKDATA puUnlockData)
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{
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puUnlockData->ddRVal = DD_OK;
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return DDHAL_DRIVER_HANDLED;
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}
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