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reactos/dll/directx/ddraw/main.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: dll/directx/ddraw/main.c
* PURPOSE: DirectDraw Library
* PROGRAMMER: Magnus Olsen (greatlrd)
*
*/
#include "rosdraw.h"
HMODULE hDllModule = 0;
CRITICAL_SECTION ddcs;
// This function is exported by the dll
typedef struct
{
LPVOID lpCallback;
LPVOID lpContext;
} DirectDrawEnumerateProcData;
BOOL
CALLBACK
TranslateCallbackA(GUID *lpGUID,
LPSTR lpDriverDescription,
LPSTR lpDriverName,
LPVOID lpContext,
HMONITOR hm)
{
DirectDrawEnumerateProcData *pEPD = (DirectDrawEnumerateProcData*)lpContext;
return ((LPDDENUMCALLBACKA) pEPD->lpCallback)(lpGUID, lpDriverDescription, lpDriverName, pEPD->lpContext);
}
/*++
* @name DirectDrawCreateClipper
*
* The DirectDrawCreateClipper routine <FILLMEIN>.
*
* @param dwFlags
* <FILLMEIN>.
*
* @param lplpDDClipper
* <FILLMEIN>.
*
* @param pUnkOuter
* <FILLMEIN>.
*
* @return <FILLMEIN>.
*
* @remarks None.
*
*--*/
HRESULT WINAPI DirectDrawCreateClipper (DWORD dwFlags,
LPDIRECTDRAWCLIPPER* lplpDDClipper, LPUNKNOWN pUnkOuter)
{
DX_WINDBG_trace();
return Main_DirectDraw_CreateClipper(NULL, dwFlags, lplpDDClipper, pUnkOuter);
}
/*++
* @name DirectDrawCreate
*
* The DirectDrawCreate routine <FILLMEIN>.
*
* @param lpGUID
* <FILLMEIN>.
*
* @param lplpDD
* <FILLMEIN>.
*
* @param pUnkOuter
* Always set to NULL otherwise DirectDrawCreate will fail and return
* error code CLASS_E_NOAGGREGATION
*
* @return <FILLMEIN>.
*
* @remarks None.
*
*--*/
HRESULT
WINAPI
DirectDrawCreate (LPGUID lpGUID,
LPDIRECTDRAW* lplpDD,
LPUNKNOWN pUnkOuter)
{
HRESULT retVal = DDERR_GENERIC;
/*
remove this when UML diagram is in place
this api is finished and is working as it should
*/
DX_WINDBG_trace();
_SEH2_TRY
{
/* check if pUnkOuter is null or not */
if (pUnkOuter)
{
retVal = CLASS_E_NOAGGREGATION;
}
else
{
retVal = Create_DirectDraw (lpGUID, (LPDIRECTDRAW*)lplpDD, &IID_IDirectDraw, FALSE);
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
}
_SEH2_END;
return retVal;
}
/*++
* @name DirectDrawCreateEx
*
* The DirectDrawCreateEx routine <FILLMEIN>.
*
* @param lpGUID
* <FILLMEIN>.
*
* @param lplpDD
* <FILLMEIN>.
*
* @param pUnkOuter
* Always set to NULL otherwise DirectDrawCreateEx will fail and return
* error code CLASS_E_NOAGGREGATION
*
* @return <FILLMEIN>.
*
* @remarks None.
*
*--*/
HRESULT
WINAPI
DirectDrawCreateEx(LPGUID lpGUID,
LPVOID* lplpDD,
REFIID id,
LPUNKNOWN pUnkOuter)
{
HRESULT retVal = DDERR_GENERIC;
/*
remove this when UML diagram is in place
this api is finished and is working as it should
*/
DX_WINDBG_trace();
_SEH2_TRY
{
/* check see if pUnkOuter is null or not */
if (pUnkOuter)
{
/* we are using same error code as MS*/
retVal = CLASS_E_NOAGGREGATION;
}/* Is it a DirectDraw 7 Request or not */
else if (!IsEqualGUID(id, &IID_IDirectDraw7))
{
retVal = DDERR_INVALIDPARAMS;
}
else
{
retVal = Create_DirectDraw (lpGUID, (LPDIRECTDRAW*)lplpDD, id, FALSE);
}
/* Create our DirectDraw interface */
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
}
_SEH2_END;
return retVal;
}
HRESULT
WINAPI
DirectDrawEnumerateA( LPDDENUMCALLBACKA lpCallback,
LPVOID lpContext)
{
HRESULT retValue;
DirectDrawEnumerateProcData epd;
DX_WINDBG_trace();
epd.lpCallback = (LPVOID) lpCallback;
epd.lpContext = lpContext;
if (!IsBadCodePtr((LPVOID)lpCallback))
{
return DirectDrawEnumerateExA((LPDDENUMCALLBACKEXA)TranslateCallbackA, &epd, DDENUM_NONDISPLAYDEVICES);
}
else
{
retValue = DDERR_INVALIDPARAMS;
}
return retValue;
}
/*
* UNIMPLEMENT
*/
HRESULT
WINAPI
DirectDrawEnumerateExA(LPDDENUMCALLBACKEXA lpCallback,
LPVOID lpContext,
DWORD dwFlags)
{
HKEY hKey;
DWORD cbData = 0;
DWORD Value = 0;
LONG rc;
BOOL EnumerateAttachedSecondaries = FALSE;
DWORD privateDWFlags = 0;
CHAR strMsg[RC_STRING_MAX_SIZE];
HRESULT retVal = DDERR_INVALIDPARAMS;
DX_WINDBG_trace();
if ((IsBadCodePtr((LPVOID)lpCallback) == 0) &&
((dwFlags & ~(DDENUM_NONDISPLAYDEVICES |
DDENUM_DETACHEDSECONDARYDEVICES |
DDENUM_ATTACHEDSECONDARYDEVICES)) == 0))
{
LoadStringA(hDllModule, STR_PRIMARY_DISPLAY, (LPSTR)&strMsg, RC_STRING_MAX_SIZE);
rc = RegOpenKeyA(HKEY_LOCAL_MACHINE, REGSTR_PATH_DDHW, &hKey);
if (rc == ERROR_SUCCESS)
{
/* Enumerate Attached Secondaries */
cbData = sizeof(DWORD);
rc = RegQueryValueExA(hKey, "EnumerateAttachedSecondaries", NULL, NULL, (LPBYTE)&Value, &cbData);
if (rc == ERROR_SUCCESS)
{
if (Value != 0)
{
EnumerateAttachedSecondaries = TRUE;
privateDWFlags = DDENUM_ATTACHEDSECONDARYDEVICES;
}
}
RegCloseKey(hKey);
}
/* Call the user supplied callback function */
rc = lpCallback(NULL, strMsg, "display", lpContext, NULL);
/* If the callback function returns DDENUMRET_CANCEL, we will stop enumerating devices */
if(rc == DDENUMRET_CANCEL)
{
retVal = DD_OK;
}
else
{
// not finished
retVal = DDERR_UNSUPPORTED;
}
}
return retVal;
}
HRESULT
WINAPI
DirectDrawEnumerateW(LPDDENUMCALLBACKW lpCallback,
LPVOID lpContext)
{
DX_WINDBG_trace();
return DDERR_UNSUPPORTED;
}
HRESULT
WINAPI
DirectDrawEnumerateExW(LPDDENUMCALLBACKEXW lpCallback,
LPVOID lpContext,
DWORD dwFlags)
{
DX_WINDBG_trace();
return DDERR_UNSUPPORTED;
}
/*
See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/
Display_d/hh/Display_d/d3d_21ac30ea-9803-401e-b541-6b08af79653d.xml.asp
for more info about this command see msdn documentation
The buffer start with D3DHAL_DP2COMMAND struct afer that follows either one struct or
no struct at at all
example for command D3DDP2OP_VIEWPORTINFO
then lpCmd will look like this
----------------------------------------
| struct | Pos |
----------------------------------------
| D3DHAL_DP2COMMAND | 0x00 - 0x03 |
---------------------------------------
| D3DHAL_DP2VIEWPORTINFO | 0x04 - xxxx |
---------------------------------------
to calculate the end of the lpCmd buffer in this example
D3DHAL_DP2COMMAND->wStateCount * sizeof(D3DHAL_DP2VIEWPORTINFO);
now you got number of bytes but we need to add the size of D3DHAL_DP2COMMAND
to get this right. the end should be
sizeof(D3DHAL_DP2COMMAND) + ( D3DHAL_DP2COMMAND->wStateCount * sizeof(D3DHAL_DP2VIEWPORTINFO));
to get the xxxx end positions.
*/
/*++
* @name D3DParseUnknownCommand
*
* The D3DParseUnknownCommand routine <FILLMEIN>.
*
* @param lpCmd
* Is a typecast to LPD3DHAL_DP2COMMAND struct
* typedef struct _D3DHAL_DP2COMMAND
* {
* BYTE bCommand;
* BYTE bReserved;
* union
* {
* WORD wPrimitiveCount;
* WORD wStateCount;
* };
* } D3DHAL_DP2COMMAND, *LPD3DHAL_DP2COMMAND;
*
* lpCmd->bCommand
* only accept D3DDP2OP_VIEWPORTINFO, and undocumented command 0x0D
* anything else will result in an error
*
Command 0x0D
* dp2command->bReserved
* is the size of the struct we got in wStateCount or how many wStateCount we got
* do not known more about it, no info in msdn about it either.
*
* Command D3DDP2OP_VIEWPORTINFO
* <FILLMEIN>.
*
* @param lpRetCmd
* <FILLMEIN>.
*
* @return <FILLMEIN>.
*
* @remarks
*
*--*/
HRESULT WINAPI
D3DParseUnknownCommand( LPVOID lpCmd,
LPVOID *lpRetCmd)
{
DWORD retCode = DD_OK;
LPD3DHAL_DP2COMMAND dp2command = lpCmd;
DX_WINDBG_trace();
/* prevent it crash if null pointer are being sent */
if ( (lpCmd == NULL) || (lpRetCmd == NULL) )
{
return E_FAIL;
}
*lpRetCmd = lpCmd;
switch (dp2command->bCommand)
{
/* check for valid command, only 3 commands are valid */
case D3DDP2OP_VIEWPORTINFO:
*(PBYTE)lpRetCmd += ((dp2command->wStateCount * sizeof(D3DHAL_DP2VIEWPORTINFO)) + sizeof(D3DHAL_DP2COMMAND));
break;
case D3DDP2OP_WINFO:
*(PBYTE)lpRetCmd += (dp2command->wStateCount * sizeof(D3DHAL_DP2WINFO)) + sizeof(D3DHAL_DP2COMMAND);
break;
case 0x0d: /* Undocumented in MSDN */
*(PBYTE)lpRetCmd += ((dp2command->wStateCount * dp2command->bReserved) + sizeof(D3DHAL_DP2COMMAND));
break;
/* set the error code */
default:
if ( (dp2command->bCommand <= D3DDP2OP_INDEXEDTRIANGLELIST) || // dp2command->bCommand <= with 0 to 3
(dp2command->bCommand == D3DDP2OP_RENDERSTATE) || // dp2command->bCommand == with 8
(dp2command->bCommand >= D3DDP2OP_LINELIST) ) // dp2command->bCommand >= with 15 to 255
{
/* set error code for command 0 to 3, 8 and 15 to 255 */
retCode = DDERR_INVALIDPARAMS;
}
else
{ /* set error code for 4 - 7, 9 - 12, 14 */
retCode = D3DERR_COMMAND_UNPARSED;
}
}
return retCode;
}
VOID
WINAPI
AcquireDDThreadLock()
{
DX_WINDBG_trace();
EnterCriticalSection(&ddcs);
}
VOID
WINAPI
ReleaseDDThreadLock()
{
DX_WINDBG_trace();
LeaveCriticalSection(&ddcs);
}
BOOL APIENTRY
DllMain( HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved )
{
hDllModule = hModule;
DX_WINDBG_trace();
switch(ul_reason_for_call)
{
case DLL_PROCESS_DETACH:
DeleteCriticalSection( &ddcs );
break;
case DLL_PROCESS_ATTACH:
DisableThreadLibraryCalls( hModule );
InitializeCriticalSection( &ddcs );
EnterCriticalSection( &ddcs );
LeaveCriticalSection( &ddcs );
break;
default:
break;
}
return TRUE;
}
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