mirror of
https://github.com/reactos/reactos.git
synced 2024-11-10 00:34:39 +00:00
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/*
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
* PROJECT: ReactOS kernel
|
|
* PURPOSE: Native driver for dxg implementation
|
|
* FILE: win32ss/reactx/dxg/ddsurf.c
|
|
* PROGRAMER: Sebastian Gasiorek (sebastian.gasiorek@reactos.org)
|
|
*/
|
|
|
|
#include <dxg_int.h>
|
|
|
|
/*++
|
|
* @name DxDdLock
|
|
* @implemented
|
|
*
|
|
* The function DxDdLock locks the surface and calls
|
|
* MapMemory driver function to assign surface memory.
|
|
* Surface memory is returned in mapMemoryData.fpProcess variable
|
|
*
|
|
* @param HANDLE hSurface
|
|
* Handle to DirectDraw surface
|
|
*
|
|
* @param PDD_LOCKDATA puLockData
|
|
* Structure with lock details
|
|
*
|
|
* @param HDC hdcClip
|
|
* Reserved
|
|
*
|
|
* @return
|
|
* Returns DDHAL_DRIVER_HANDLED or DDHAL_DRIVER_NOTHANDLED.
|
|
*
|
|
* @remarks.
|
|
* Missing lock data and error handling.
|
|
*--*/
|
|
DWORD
|
|
NTAPI
|
|
DxDdLock(HANDLE hSurface,
|
|
PDD_LOCKDATA puLockData,
|
|
HDC hdcClip)
|
|
{
|
|
PEDD_SURFACE pSurface;
|
|
PEDD_DIRECTDRAW_LOCAL peDdL;
|
|
PEDD_DIRECTDRAW_GLOBAL peDdGl;
|
|
DD_MAPMEMORYDATA mapMemoryData;
|
|
|
|
pSurface = (PEDD_SURFACE)DdHmgLock(hSurface, ObjType_DDSURFACE_TYPE, TRUE);
|
|
peDdL = pSurface->peDirectDrawLocal;
|
|
peDdGl = peDdL->peDirectDrawGlobal2;
|
|
|
|
// Map memory if it's not already mapped and driver function is provided
|
|
if (!peDdL->isMemoryMapped && (peDdGl->ddCallbacks.dwFlags & DDHAL_CB32_MAPMEMORY))
|
|
{
|
|
mapMemoryData.bMap = 1;
|
|
mapMemoryData.hProcess = (HANDLE)-1;
|
|
mapMemoryData.fpProcess = 0;
|
|
mapMemoryData.lpDD = (PDD_DIRECTDRAW_GLOBAL)peDdGl;
|
|
|
|
peDdGl->ddCallbacks.MapMemory(&mapMemoryData);
|
|
|
|
if (!mapMemoryData.ddRVal)
|
|
{
|
|
peDdL->isMemoryMapped = 1;
|
|
peDdL->fpProcess2 = mapMemoryData.fpProcess;
|
|
}
|
|
}
|
|
|
|
if (pSurface)
|
|
{
|
|
InterlockedExchangeAdd((LONG*)&pSurface->pobj.cExclusiveLock, 0xFFFFFFFF);
|
|
}
|
|
|
|
puLockData->ddRVal = DD_OK;
|
|
|
|
return DDHAL_DRIVER_HANDLED;
|
|
}
|
|
|
|
/*++
|
|
* @name DxDdUnlock
|
|
* @unimplemented
|
|
*
|
|
* The function DxDdUnlock releases the lock from specified surface
|
|
*
|
|
* @param HANDLE hSurface
|
|
* Handle to DirectDraw surface
|
|
*
|
|
* @param PDD_UNLOCKDATA puUnlockData
|
|
* Structure with lock details
|
|
*
|
|
* @return
|
|
* Returns DDHAL_DRIVER_HANDLED or DDHAL_DRIVER_NOTHANDLED.
|
|
*
|
|
* @remarks.
|
|
* Stub
|
|
*--*/
|
|
DWORD
|
|
NTAPI
|
|
DxDdUnlock(HANDLE hSurface,
|
|
PDD_UNLOCKDATA puUnlockData)
|
|
{
|
|
puUnlockData->ddRVal = DD_OK;
|
|
|
|
return DDHAL_DRIVER_HANDLED;
|
|
}
|