reactos/dll/directx/msdmo/dmoreg.c

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/*
* Copyright (C) 2003 Michael Günnewig
* Copyright (C) 2003 CodeWeavers Inc. (Ulrich Czekalla)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winerror.h"
#include "winreg.h"
#include "objbase.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "initguid.h"
#include "dmo.h"
WINE_DEFAULT_DEBUG_CHANNEL(msdmo);
#define MSDMO_MAJOR_VERSION 6
static const WCHAR szDMORootKey[] =
{
'D','i','r','e','c','t','S','h','o','w','\\',
'M','e','d','i','a','O','b','j','e','c','t','s',0
};
static const WCHAR szDMOInputType[] =
{
'I','n','p','u','t','T','y','p','e','s',0
};
static const WCHAR szDMOOutputType[] =
{
'O','u','t','p','u','t','T','y','p','e','s',0
};
static const WCHAR szDMOKeyed[] =
{
'K','e','y','e','d',0
};
static const WCHAR szDMOCategories[] =
{
'C','a','t','e','g','o','r','i','e','s',0
};
static const WCHAR szGUIDFmt[] =
{
'%','0','8','X','-','%','0','4','X','-','%','0','4','X','-','%','0',
'2','X','%','0','2','X','-','%','0','2','X','%','0','2','X','%','0','2',
'X','%','0','2','X','%','0','2','X','%','0','2','X',0
};
static const WCHAR szCat3Fmt[] =
{
'%','s','\\','%','s','\\','%','s',0
};
static const WCHAR szCat2Fmt[] =
{
'%','s','\\','%','s',0
};
static const WCHAR szToGuidFmt[] =
{
'{','%','s','}',0
};
typedef struct
{
const IEnumDMOVtbl *lpVtbl;
LONG ref;
DWORD index;
const GUID* guidCategory;
DWORD dwFlags;
DWORD cInTypes;
DMO_PARTIAL_MEDIATYPE *pInTypes;
DWORD cOutTypes;
DMO_PARTIAL_MEDIATYPE *pOutTypes;
HKEY hkey;
} IEnumDMOImpl;
static HRESULT read_types(HKEY root, LPCWSTR key, ULONG *supplied, ULONG requested, DMO_PARTIAL_MEDIATYPE* types);
static const IEnumDMOVtbl edmovt;
static LPWSTR GUIDToString(LPWSTR lpwstr, REFGUID lpcguid)
{
wsprintfW(lpwstr, szGUIDFmt, lpcguid->Data1, lpcguid->Data2,
lpcguid->Data3, lpcguid->Data4[0], lpcguid->Data4[1],
lpcguid->Data4[2], lpcguid->Data4[3], lpcguid->Data4[4],
lpcguid->Data4[5], lpcguid->Data4[6], lpcguid->Data4[7]);
return lpwstr;
}
static BOOL IsMediaTypeEqual(const DMO_PARTIAL_MEDIATYPE* mt1, const DMO_PARTIAL_MEDIATYPE* mt2)
{
return (IsEqualCLSID(&mt1->type, &mt2->type) ||
IsEqualCLSID(&mt2->type, &GUID_NULL) ||
IsEqualCLSID(&mt1->type, &GUID_NULL)) &&
(IsEqualCLSID(&mt1->subtype, &mt2->subtype) ||
IsEqualCLSID(&mt2->subtype, &GUID_NULL) ||
IsEqualCLSID(&mt1->subtype, &GUID_NULL));
}
static HRESULT write_types(HKEY hkey, LPCWSTR name, const DMO_PARTIAL_MEDIATYPE* types, DWORD count)
{
HRESULT hres = S_OK;
if (MSDMO_MAJOR_VERSION > 5)
{
hres = RegSetValueExW(hkey, name, 0, REG_BINARY, (const BYTE*) types,
count* sizeof(DMO_PARTIAL_MEDIATYPE));
}
else
{
HKEY skey1,skey2,skey3;
DWORD index = 0;
WCHAR szGuidKey[64];
hres = RegCreateKeyExW(hkey, name, 0, NULL, REG_OPTION_NON_VOLATILE,
KEY_WRITE, NULL, &skey1, NULL);
while (index < count)
{
GUIDToString(szGuidKey,&types[index].type);
hres = RegCreateKeyExW(skey1, szGuidKey, 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &skey2, NULL);
GUIDToString(szGuidKey,&types[index].subtype);
hres = RegCreateKeyExW(skey2, szGuidKey, 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &skey3, NULL);
RegCloseKey(skey3);
RegCloseKey(skey2);
index ++;
}
RegCloseKey(skey1);
}
return hres;
}
/***************************************************************
* DMORegister (MSDMO.@)
*
* Register a DirectX Media Object.
*/
HRESULT WINAPI DMORegister(
LPCWSTR szName,
REFCLSID clsidDMO,
REFGUID guidCategory,
DWORD dwFlags,
DWORD cInTypes,
const DMO_PARTIAL_MEDIATYPE *pInTypes,
DWORD cOutTypes,
const DMO_PARTIAL_MEDIATYPE *pOutTypes
)
{
WCHAR szguid[64];
HRESULT hres;
HKEY hrkey = 0;
HKEY hkey = 0;
HKEY hckey = 0;
HKEY hclskey = 0;
TRACE("%s\n", debugstr_w(szName));
hres = RegCreateKeyExW(HKEY_CLASSES_ROOT, szDMORootKey, 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hrkey, NULL);
if (ERROR_SUCCESS != hres)
goto lend;
/* Create clsidDMO key under MediaObjects */
hres = RegCreateKeyExW(hrkey, GUIDToString(szguid, clsidDMO), 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hkey, NULL);
if (ERROR_SUCCESS != hres)
goto lend;
/* Set default Name value */
hres = RegSetValueExW(hkey, NULL, 0, REG_SZ, (const BYTE*) szName,
(strlenW(szName) + 1) * sizeof(WCHAR));
/* Set InputTypes */
hres = write_types(hkey, szDMOInputType, pInTypes, cInTypes);
/* Set OutputTypes */
hres = write_types(hkey, szDMOOutputType, pOutTypes, cOutTypes);
if (dwFlags & DMO_REGISTERF_IS_KEYED)
{
/* Create Keyed key */
hres = RegCreateKeyExW(hkey, szDMOKeyed, 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hckey, NULL);
if (ERROR_SUCCESS != hres)
goto lend;
RegCloseKey(hckey);
}
/* Register the category */
hres = RegCreateKeyExW(hrkey, szDMOCategories, 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hckey, NULL);
if (ERROR_SUCCESS != hres)
goto lend;
RegCloseKey(hkey);
hres = RegCreateKeyExW(hckey, GUIDToString(szguid, guidCategory), 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hkey, NULL);
if (ERROR_SUCCESS != hres)
goto lend;
hres = RegCreateKeyExW(hkey, GUIDToString(szguid, clsidDMO), 0, NULL,
REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hclskey, NULL);
if (ERROR_SUCCESS != hres)
goto lend;
lend:
if (hkey)
RegCloseKey(hkey);
if (hckey)
RegCloseKey(hckey);
if (hclskey)
RegCloseKey(hclskey);
if (hrkey)
RegCloseKey(hrkey);
TRACE(" hresult=0x%08x\n", hres);
return hres;
}
/***************************************************************
* DMOUnregister (MSDMO.@)
*
* Unregister a DirectX Media Object.
*/
HRESULT WINAPI DMOUnregister(REFCLSID clsidDMO, REFGUID guidCategory)
{
HRESULT hres;
WCHAR szguid[64];
HKEY hrkey = 0;
HKEY hckey = 0;
GUIDToString(szguid, clsidDMO);
TRACE("%s %p\n", debugstr_w(szguid), guidCategory);
hres = RegOpenKeyExW(HKEY_CLASSES_ROOT, szDMORootKey, 0, KEY_WRITE, &hrkey);
if (ERROR_SUCCESS != hres)
goto lend;
hres = RegDeleteKeyW(hrkey, szguid);
if (ERROR_SUCCESS != hres)
goto lend;
hres = RegOpenKeyExW(hrkey, szDMOCategories, 0, KEY_WRITE, &hckey);
if (ERROR_SUCCESS != hres)
goto lend;
hres = RegDeleteKeyW(hckey, szguid);
if (ERROR_SUCCESS != hres)
goto lend;
lend:
if (hckey)
RegCloseKey(hckey);
if (hrkey)
RegCloseKey(hrkey);
return hres;
}
/***************************************************************
* DMOGetName (MSDMO.@)
*
* Get DMP Name from the registry
*/
HRESULT WINAPI DMOGetName(REFCLSID clsidDMO, WCHAR szName[])
{
WCHAR szguid[64];
HRESULT hres;
HKEY hrkey = 0;
HKEY hkey = 0;
static const INT max_name_len = 80;
DWORD count;
TRACE("%s\n", debugstr_guid(clsidDMO));
hres = RegOpenKeyExW(HKEY_CLASSES_ROOT, szDMORootKey,
0, KEY_READ, &hrkey);
if (ERROR_SUCCESS != hres)
goto lend;
hres = RegOpenKeyExW(hrkey, GUIDToString(szguid, clsidDMO),
0, KEY_READ, &hkey);
if (ERROR_SUCCESS != hres)
goto lend;
count = max_name_len * sizeof(WCHAR);
hres = RegQueryValueExW(hkey, NULL, NULL, NULL,
(LPBYTE) szName, &count);
TRACE(" szName=%s\n", debugstr_w(szName));
lend:
if (hkey)
RegCloseKey(hrkey);
if (hkey)
RegCloseKey(hkey);
return hres;
}
/**************************************************************************
* IEnumDMO_Destructor
*/
static BOOL IEnumDMO_Destructor(IEnumDMO* iface)
{
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
TRACE("%p\n", This);
if (This->hkey)
RegCloseKey(This->hkey);
HeapFree(GetProcessHeap(), 0, This->pInTypes);
HeapFree(GetProcessHeap(), 0, This->pOutTypes);
return TRUE;
}
/**************************************************************************
* IEnumDMO_Constructor
*/
static IEnumDMO * IEnumDMO_Constructor(
REFGUID guidCategory,
DWORD dwFlags,
DWORD cInTypes,
const DMO_PARTIAL_MEDIATYPE *pInTypes,
DWORD cOutTypes,
const DMO_PARTIAL_MEDIATYPE *pOutTypes)
{
UINT size;
IEnumDMOImpl* lpedmo;
BOOL ret = FALSE;
lpedmo = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IEnumDMOImpl));
if (lpedmo)
{
lpedmo->ref = 1;
lpedmo->lpVtbl = &edmovt;
lpedmo->index = -1;
lpedmo->guidCategory = guidCategory;
lpedmo->dwFlags = dwFlags;
if (cInTypes > 0)
{
size = cInTypes * sizeof(DMO_PARTIAL_MEDIATYPE);
lpedmo->pInTypes = HeapAlloc(GetProcessHeap(), 0, size);
if (!lpedmo->pInTypes)
goto lerr;
memcpy(lpedmo->pInTypes, pInTypes, size);
lpedmo->cInTypes = cInTypes;
}
if (cOutTypes > 0)
{
size = cOutTypes * sizeof(DMO_PARTIAL_MEDIATYPE);
lpedmo->pOutTypes = HeapAlloc(GetProcessHeap(), 0, size);
if (!lpedmo->pOutTypes)
goto lerr;
memcpy(lpedmo->pOutTypes, pOutTypes, size);
lpedmo->cOutTypes = cOutTypes;
}
/* If not filtering by category enum from media objects root */
if (IsEqualGUID(guidCategory, &GUID_NULL))
{
if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, szDMORootKey,
0, KEY_READ, &lpedmo->hkey))
ret = TRUE;
}
else
{
WCHAR szguid[64];
WCHAR szKey[MAX_PATH];
wsprintfW(szKey, szCat3Fmt, szDMORootKey, szDMOCategories,
GUIDToString(szguid, guidCategory));
if (ERROR_SUCCESS == RegOpenKeyExW(HKEY_CLASSES_ROOT, szKey,
0, KEY_READ, &lpedmo->hkey))
ret = TRUE;
}
lerr:
if(!ret)
{
IEnumDMO_Destructor((IEnumDMO*)lpedmo);
HeapFree(GetProcessHeap(),0,lpedmo);
lpedmo = NULL;
}
}
TRACE("returning %p\n", lpedmo);
return (IEnumDMO*)lpedmo;
}
/******************************************************************************
* IEnumDMO_fnAddRef
*/
static ULONG WINAPI IEnumDMO_fnAddRef(IEnumDMO * iface)
{
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
return InterlockedIncrement(&This->ref);
}
/**************************************************************************
* EnumDMO_QueryInterface
*/
static HRESULT WINAPI IEnumDMO_fnQueryInterface(
IEnumDMO* iface,
REFIID riid,
LPVOID *ppvObj)
{
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
*ppvObj = NULL;
if(IsEqualIID(riid, &IID_IUnknown))
*ppvObj = This;
else if(IsEqualIID(riid, &IID_IEnumDMO))
*ppvObj = This;
if(*ppvObj)
{
IEnumDMO_fnAddRef(*ppvObj);
return S_OK;
}
return E_NOINTERFACE;
}
/******************************************************************************
* IEnumDMO_fnRelease
*/
static ULONG WINAPI IEnumDMO_fnRelease(IEnumDMO * iface)
{
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
ULONG refCount = InterlockedDecrement(&This->ref);
if (!refCount)
{
IEnumDMO_Destructor((IEnumDMO*)This);
HeapFree(GetProcessHeap(),0,This);
}
return refCount;
}
/******************************************************************************
* IEnumDMO_fnNext
*/
static HRESULT WINAPI IEnumDMO_fnNext(
IEnumDMO * iface,
DWORD cItemsToFetch,
CLSID * pCLSID,
WCHAR ** Names,
DWORD * pcItemsFetched)
{
FILETIME ft;
HKEY hkey;
WCHAR szNextKey[MAX_PATH];
WCHAR szGuidKey[64];
WCHAR szKey[MAX_PATH];
WCHAR szValue[MAX_PATH];
DWORD len;
UINT count = 0;
HRESULT hres = S_OK;
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
TRACE("--> (%p) %d %p %p %p\n", iface, cItemsToFetch, pCLSID, Names, pcItemsFetched);
if (!pCLSID || !Names || !pcItemsFetched)
return E_POINTER;
while (count < cItemsToFetch)
{
This->index++;
len = MAX_PATH;
hres = RegEnumKeyExW(This->hkey, This->index, szNextKey, &len, NULL, NULL, NULL, &ft);
if (hres != ERROR_SUCCESS)
break;
TRACE("found %s\n", debugstr_w(szNextKey));
if (!(This->dwFlags & DMO_ENUMF_INCLUDE_KEYED))
{
wsprintfW(szKey, szCat3Fmt, szDMORootKey, szNextKey, szDMOKeyed);
hres = RegOpenKeyExW(HKEY_CLASSES_ROOT, szKey, 0, KEY_READ, &hkey);
if (ERROR_SUCCESS == hres)
{
RegCloseKey(hkey);
/* Skip Keyed entries */
continue;
}
}
wsprintfW(szKey, szCat2Fmt, szDMORootKey, szNextKey);
hres = RegOpenKeyExW(HKEY_CLASSES_ROOT, szKey, 0, KEY_READ, &hkey);
if (This->pInTypes)
{
UINT i, j;
DWORD cInTypes;
DMO_PARTIAL_MEDIATYPE* pInTypes;
hres = read_types(hkey, szDMOInputType, &cInTypes,
sizeof(szValue)/sizeof(DMO_PARTIAL_MEDIATYPE),
(DMO_PARTIAL_MEDIATYPE*)szValue);
if (ERROR_SUCCESS != hres)
{
RegCloseKey(hkey);
continue;
}
pInTypes = (DMO_PARTIAL_MEDIATYPE*) szValue;
for (i = 0; i < This->cInTypes; i++)
{
for (j = 0; j < cInTypes; j++)
{
if (IsMediaTypeEqual(&pInTypes[j], &This->pInTypes[i]))
break;
}
if (j >= cInTypes)
break;
}
if (i < This->cInTypes)
{
RegCloseKey(hkey);
continue;
}
}
if (This->pOutTypes)
{
UINT i, j;
DWORD cOutTypes;
DMO_PARTIAL_MEDIATYPE* pOutTypes;
hres = read_types(hkey, szDMOOutputType, &cOutTypes,
sizeof(szValue)/sizeof(DMO_PARTIAL_MEDIATYPE),
(DMO_PARTIAL_MEDIATYPE*)szValue);
if (ERROR_SUCCESS != hres)
{
RegCloseKey(hkey);
continue;
}
pOutTypes = (DMO_PARTIAL_MEDIATYPE*) szValue;
for (i = 0; i < This->cOutTypes; i++)
{
for (j = 0; j < cOutTypes; j++)
{
if (IsMediaTypeEqual(&pOutTypes[j], &This->pOutTypes[i]))
break;
}
if (j >= cOutTypes)
break;
}
if (i < This->cOutTypes)
{
RegCloseKey(hkey);
continue;
}
}
/* Media object wasn't filtered so add it to return list */
Names[count] = NULL;
len = MAX_PATH * sizeof(WCHAR);
hres = RegQueryValueExW(hkey, NULL, NULL, NULL, (LPBYTE) szValue, &len);
if (ERROR_SUCCESS == hres)
{
Names[count] = HeapAlloc(GetProcessHeap(), 0, strlenW(szValue) + 1);
if (Names[count])
strcmpW(Names[count], szValue);
}
wsprintfW(szGuidKey,szToGuidFmt,szNextKey);
CLSIDFromString(szGuidKey, &pCLSID[count]);
TRACE("found match %s %s\n", debugstr_w(szValue), debugstr_w(szNextKey));
RegCloseKey(hkey);
count++;
}
*pcItemsFetched = count;
if (*pcItemsFetched < cItemsToFetch)
hres = S_FALSE;
TRACE("<-- %i found\n",count);
return hres;
}
/******************************************************************************
* IEnumDMO_fnSkip
*/
static HRESULT WINAPI IEnumDMO_fnSkip(IEnumDMO * iface, DWORD cItemsToSkip)
{
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
This->index += cItemsToSkip;
return S_OK;
}
/******************************************************************************
* IEnumDMO_fnReset
*/
static HRESULT WINAPI IEnumDMO_fnReset(IEnumDMO * iface)
{
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
This->index = -1;
return S_OK;
}
/******************************************************************************
* IEnumDMO_fnClone
*/
static HRESULT WINAPI IEnumDMO_fnClone(IEnumDMO * iface, IEnumDMO **ppEnum)
{
IEnumDMOImpl *This = (IEnumDMOImpl *)iface;
FIXME("(%p)->() to (%p)->() E_NOTIMPL\n", This, ppEnum);
return E_NOTIMPL;
}
/***************************************************************
* DMOEnum (MSDMO.@)
*
* Enumerate DirectX Media Objects in the registry.
*/
HRESULT WINAPI DMOEnum(
REFGUID guidCategory,
DWORD dwFlags,
DWORD cInTypes,
const DMO_PARTIAL_MEDIATYPE *pInTypes,
DWORD cOutTypes,
const DMO_PARTIAL_MEDIATYPE *pOutTypes,
IEnumDMO **ppEnum)
{
HRESULT hres = E_FAIL;
TRACE("guidCategory=%p dwFlags=0x%08x cInTypes=%d cOutTypes=%d\n",
guidCategory, dwFlags, cInTypes, cOutTypes);
*ppEnum = IEnumDMO_Constructor(guidCategory, dwFlags, cInTypes,
pInTypes, cOutTypes, pOutTypes);
if (*ppEnum)
hres = S_OK;
return hres;
}
static const IEnumDMOVtbl edmovt =
{
IEnumDMO_fnQueryInterface,
IEnumDMO_fnAddRef,
IEnumDMO_fnRelease,
IEnumDMO_fnNext,
IEnumDMO_fnSkip,
IEnumDMO_fnReset,
IEnumDMO_fnClone,
};
HRESULT read_types(HKEY root, LPCWSTR key, ULONG *supplied, ULONG requested, DMO_PARTIAL_MEDIATYPE* types )
{
HRESULT ret = S_OK;
if (MSDMO_MAJOR_VERSION > 5)
{
DWORD len;
len = requested * sizeof(DMO_PARTIAL_MEDIATYPE);
ret = RegQueryValueExW(root, key, NULL, NULL, (LPBYTE) types, &len);
*supplied = len / sizeof(DMO_PARTIAL_MEDIATYPE);
}
else
{
HKEY hkey;
WCHAR szGuidKey[64];
*supplied = 0;
if (ERROR_SUCCESS == RegOpenKeyExW(root, key, 0, KEY_READ, &hkey))
{
int index = 0;
WCHAR szNextKey[MAX_PATH];
DWORD len;
LONG rc = ERROR_SUCCESS;
while (rc == ERROR_SUCCESS)
{
len = MAX_PATH;
rc = RegEnumKeyExW(hkey, index, szNextKey, &len, NULL, NULL, NULL, NULL);
if (rc == ERROR_SUCCESS)
{
HKEY subk;
int sub_index = 0;
LONG rcs = ERROR_SUCCESS;
WCHAR szSubKey[MAX_PATH];
RegOpenKeyExW(hkey, szNextKey, 0, KEY_READ, &subk);
while (rcs == ERROR_SUCCESS)
{
len = MAX_PATH;
rcs = RegEnumKeyExW(subk, sub_index, szSubKey, &len, NULL, NULL, NULL, NULL);
if (rcs == ERROR_SUCCESS)
{
if (*supplied >= requested)
{
/* Bailing */
ret = S_FALSE;
rc = ERROR_MORE_DATA;
rcs = ERROR_MORE_DATA;
break;
}
wsprintfW(szGuidKey,szToGuidFmt,szNextKey);
CLSIDFromString(szGuidKey, &types[*supplied].type);
wsprintfW(szGuidKey,szToGuidFmt,szSubKey);
CLSIDFromString(szGuidKey, &types[*supplied].subtype);
TRACE("Adding type %s subtype %s at index %i\n",
debugstr_guid(&types[*supplied].type),
debugstr_guid(&types[*supplied].subtype),
*supplied);
(*supplied)++;
}
sub_index++;
}
index++;
}
}
RegCloseKey(hkey);
}
}
return ret;
}
/***************************************************************
* DMOGetTypes (MSDMO.@)
*/
HRESULT WINAPI DMOGetTypes(REFCLSID clsidDMO,
ULONG ulInputTypesRequested,
ULONG* pulInputTypesSupplied,
DMO_PARTIAL_MEDIATYPE* pInputTypes,
ULONG ulOutputTypesRequested,
ULONG* pulOutputTypesSupplied,
DMO_PARTIAL_MEDIATYPE* pOutputTypes)
{
HKEY root,hkey;
HRESULT ret = S_OK;
WCHAR szguid[64];
TRACE ("(%s,%u,%p,%p,%u,%p,%p),stub!\n", debugstr_guid(clsidDMO),
ulInputTypesRequested, pulInputTypesSupplied, pInputTypes,
ulOutputTypesRequested, pulOutputTypesSupplied, pOutputTypes);
if (ERROR_SUCCESS != RegOpenKeyExW(HKEY_CLASSES_ROOT, szDMORootKey, 0,
KEY_READ, &root))
return E_FAIL;
if (ERROR_SUCCESS != RegOpenKeyExW(root,GUIDToString(szguid,clsidDMO) , 0,
KEY_READ, &hkey))
{
RegCloseKey(root);
return E_FAIL;
}
if (ulInputTypesRequested > 0)
{
ret = read_types(hkey, szDMOInputType, pulInputTypesSupplied, ulInputTypesRequested, pInputTypes );
}
else
*pulInputTypesSupplied = 0;
if (ulOutputTypesRequested > 0)
{
HRESULT ret2;
ret2 = read_types(hkey, szDMOOutputType, pulOutputTypesSupplied, ulOutputTypesRequested, pOutputTypes );
if (ret == S_OK)
ret = ret2;
}
else
*pulOutputTypesSupplied = 0;
return ret;
}