createdevenum.c 26.9 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
/*
 *	ICreateDevEnum implementation for DEVENUM.dll
 *
 * Copyright (C) 2002 Robert Shearman
 *
 * 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
18
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 20 21 22 23 24 25
 *
 * NOTES ON THIS FILE:
 * - Implements ICreateDevEnum interface which creates an IEnumMoniker
 *   implementation
 * - Also creates the special registry keys created at run-time
 */

26 27 28
#define NONAMELESSSTRUCT
#define NONAMELESSUNION

29
#include "devenum_private.h"
30
#include "vfw.h"
31 32

#include "wine/debug.h"
33
#include "wine/unicode.h"
34 35 36 37 38 39 40
#include "mmddk.h"

WINE_DEFAULT_DEBUG_CHANNEL(devenum);

extern HINSTANCE DEVENUM_hInstance;

const WCHAR wszInstanceKeyName[] ={'I','n','s','t','a','n','c','e',0};
41

42
static const WCHAR wszRegSeparator[] =   {'\\', 0 };
43
static const WCHAR wszActiveMovieKey[] = {'S','o','f','t','w','a','r','e','\\',
44 45 46
                                   'M','i','c','r','o','s','o','f','t','\\',
                                   'A','c','t','i','v','e','M','o','v','i','e','\\',
                                   'd','e','v','e','n','u','m','\\',0};
47 48 49 50 51 52 53 54
static const WCHAR wszFilterKeyName[] = {'F','i','l','t','e','r',0};
static const WCHAR wszMeritName[] = {'M','e','r','i','t',0};
static const WCHAR wszPins[] = {'P','i','n','s',0};
static const WCHAR wszAllowedMany[] = {'A','l','l','o','w','e','d','M','a','n','y',0};
static const WCHAR wszAllowedZero[] = {'A','l','l','o','w','e','d','Z','e','r','o',0};
static const WCHAR wszDirection[] = {'D','i','r','e','c','t','i','o','n',0};
static const WCHAR wszIsRendered[] = {'I','s','R','e','n','d','e','r','e','d',0};
static const WCHAR wszTypes[] = {'T','y','p','e','s',0};
55 56

static ULONG WINAPI DEVENUM_ICreateDevEnum_AddRef(ICreateDevEnum * iface);
57
static HRESULT DEVENUM_CreateSpecialCategories(void);
58 59 60 61 62 63 64 65 66 67 68

/**********************************************************************
 * DEVENUM_ICreateDevEnum_QueryInterface (also IUnknown)
 */
static HRESULT WINAPI DEVENUM_ICreateDevEnum_QueryInterface(
    ICreateDevEnum * iface,
    REFIID riid,
    LPVOID *ppvObj)
{
    TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));

69
    if (ppvObj == NULL) return E_POINTER;
70 71 72 73

    if (IsEqualGUID(riid, &IID_IUnknown) ||
	IsEqualGUID(riid, &IID_ICreateDevEnum))
    {
74
        *ppvObj = iface;
75 76 77 78 79 80 81 82 83 84 85 86 87 88 89
	DEVENUM_ICreateDevEnum_AddRef(iface);
	return S_OK;
    }

    FIXME("- no interface\n\tIID:\t%s\n", debugstr_guid(riid));
    return E_NOINTERFACE;
}

/**********************************************************************
 * DEVENUM_ICreateDevEnum_AddRef (also IUnknown)
 */
static ULONG WINAPI DEVENUM_ICreateDevEnum_AddRef(ICreateDevEnum * iface)
{
    TRACE("\n");

90
    DEVENUM_LockModule();
91

92
    return 2; /* non-heap based object */
93 94 95 96 97 98 99 100 101
}

/**********************************************************************
 * DEVENUM_ICreateDevEnum_Release (also IUnknown)
 */
static ULONG WINAPI DEVENUM_ICreateDevEnum_Release(ICreateDevEnum * iface)
{
    TRACE("\n");

102
    DEVENUM_UnlockModule();
103

104
    return 1; /* non-heap based object */
105 106
}

107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
HRESULT DEVENUM_GetCategoryKey(REFCLSID clsidDeviceClass, HKEY *pBaseKey, WCHAR *wszRegKeyName, UINT maxLen)
{
    if (IsEqualGUID(clsidDeviceClass, &CLSID_AudioRendererCategory) ||
        IsEqualGUID(clsidDeviceClass, &CLSID_AudioInputDeviceCategory) ||
        IsEqualGUID(clsidDeviceClass, &CLSID_VideoInputDeviceCategory) ||
        IsEqualGUID(clsidDeviceClass, &CLSID_MidiRendererCategory))
    {
        *pBaseKey = HKEY_CURRENT_USER;
        strcpyW(wszRegKeyName, wszActiveMovieKey);

        if (!StringFromGUID2(clsidDeviceClass, wszRegKeyName + strlenW(wszRegKeyName), maxLen - strlenW(wszRegKeyName)))
            return E_OUTOFMEMORY;
    }
    else
    {
        *pBaseKey = HKEY_CLASSES_ROOT;
        strcpyW(wszRegKeyName, clsid_keyname);
        strcatW(wszRegKeyName, wszRegSeparator);

        if (!StringFromGUID2(clsidDeviceClass, wszRegKeyName + CLSID_STR_LEN, maxLen - CLSID_STR_LEN))
            return E_OUTOFMEMORY;

        strcatW(wszRegKeyName, wszRegSeparator);
        strcatW(wszRegKeyName, wszInstanceKeyName);
    }

    return S_OK;
}

136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193
static void DEVENUM_ReadPinTypes(HKEY hkeyPinKey, REGFILTERPINS *rgPin)
{
    HKEY hkeyTypes = NULL;
    DWORD dwMajorTypes, i;
    REGPINTYPES *lpMediaType = NULL;
    DWORD dwMediaTypeSize = 0;

    if (RegOpenKeyExW(hkeyPinKey, wszTypes, 0, KEY_READ, &hkeyTypes) != ERROR_SUCCESS)
        return ;

    if (RegQueryInfoKeyW(hkeyTypes, NULL, NULL, NULL, &dwMajorTypes, NULL, NULL, NULL, NULL, NULL, NULL, NULL)
                != ERROR_SUCCESS)
    {
        RegCloseKey(hkeyTypes);
        return ;
    }

    for (i = 0; i < dwMajorTypes; i++)
    {
        HKEY hkeyMajorType = NULL;
        WCHAR wszMajorTypeName[64];
        DWORD cName = sizeof(wszMajorTypeName) / sizeof(WCHAR);
        DWORD dwMinorTypes, i1;

        if (RegEnumKeyExW(hkeyTypes, i, wszMajorTypeName, &cName, NULL, NULL, NULL, NULL) != ERROR_SUCCESS) continue;

        if (RegOpenKeyExW(hkeyTypes, wszMajorTypeName, 0, KEY_READ, &hkeyMajorType) != ERROR_SUCCESS) continue;

        if (RegQueryInfoKeyW(hkeyMajorType, NULL, NULL, NULL, &dwMinorTypes, NULL, NULL, NULL, NULL, NULL, NULL, NULL)
                    != ERROR_SUCCESS)
        {
            RegCloseKey(hkeyMajorType);
            continue;
        }

        for (i1 = 0; i1 < dwMinorTypes; i1++)
        {
            WCHAR wszMinorTypeName[64];
            DWORD cName = sizeof(wszMinorTypeName) / sizeof(WCHAR);
            CLSID *clsMajorType = NULL, *clsMinorType = NULL;
            HRESULT hr;

            if (RegEnumKeyExW(hkeyMajorType, i1, wszMinorTypeName, &cName, NULL, NULL, NULL, NULL) != ERROR_SUCCESS) continue;

            clsMinorType = CoTaskMemAlloc(sizeof(CLSID));
            if (!clsMinorType) continue;

            clsMajorType = CoTaskMemAlloc(sizeof(CLSID));
            if (!clsMajorType) goto error_cleanup_types;

            hr = CLSIDFromString(wszMinorTypeName, clsMinorType);
            if (FAILED(hr)) goto error_cleanup_types;

            hr = CLSIDFromString(wszMajorTypeName, clsMajorType);
            if (FAILED(hr)) goto error_cleanup_types;

            if (rgPin->nMediaTypes == dwMediaTypeSize)
            {
194
                DWORD dwNewSize = dwMediaTypeSize + (dwMediaTypeSize < 2 ? 1 : dwMediaTypeSize / 2);
195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
                REGPINTYPES *lpNewMediaType;

                lpNewMediaType = CoTaskMemRealloc(lpMediaType, sizeof(REGPINTYPES) * dwNewSize);
                if (!lpNewMediaType) goto error_cleanup_types;

                lpMediaType = lpNewMediaType;
                dwMediaTypeSize = dwNewSize;
             }

            lpMediaType[rgPin->nMediaTypes].clsMajorType = clsMajorType;
            lpMediaType[rgPin->nMediaTypes].clsMinorType = clsMinorType;
            rgPin->nMediaTypes++;
            continue;

            error_cleanup_types:

            if (clsMajorType) CoTaskMemFree(clsMajorType);
            if (clsMinorType) CoTaskMemFree(clsMinorType);
        }

        RegCloseKey(hkeyMajorType);
    }

    RegCloseKey(hkeyTypes);

    if (lpMediaType && !rgPin->nMediaTypes)
    {
        CoTaskMemFree(lpMediaType);
        lpMediaType = NULL;
    }

    rgPin->lpMediaType = lpMediaType;
}

static void DEVENUM_ReadPins(HKEY hkeyFilterClass, REGFILTER2 *rgf2)
{
    HKEY hkeyPins = NULL;
    DWORD dwPinsSubkeys, i;
    REGFILTERPINS *rgPins = NULL;

    if (RegOpenKeyExW(hkeyFilterClass, wszPins, 0, KEY_READ, &hkeyPins) != ERROR_SUCCESS)
        return ;

    if (RegQueryInfoKeyW(hkeyPins, NULL, NULL, NULL, &dwPinsSubkeys, NULL, NULL, NULL, NULL, NULL, NULL, NULL)
                != ERROR_SUCCESS)
    {
        RegCloseKey(hkeyPins);
        return ;
    }

    if (dwPinsSubkeys)
    {
        rgPins = CoTaskMemAlloc(sizeof(REGFILTERPINS) * dwPinsSubkeys);
        if (!rgPins)
        {
            RegCloseKey(hkeyPins);
            return ;
        }
    }

    for (i = 0; i < dwPinsSubkeys; i++)
    {
        HKEY hkeyPinKey = NULL;
        WCHAR wszPinName[MAX_PATH];
        DWORD cName = sizeof(wszPinName) / sizeof(WCHAR);
        DWORD Type, cbData;
        REGFILTERPINS *rgPin = &rgPins[rgf2->u.s.cPins];
        LONG lRet;

        rgPin->strName = NULL;
        rgPin->clsConnectsToFilter = &GUID_NULL;
        rgPin->strConnectsToPin = NULL;
        rgPin->nMediaTypes = 0;
        rgPin->lpMediaType = NULL;

        if (RegEnumKeyExW(hkeyPins, i, wszPinName, &cName, NULL, NULL, NULL, NULL) != ERROR_SUCCESS) continue;

        if (RegOpenKeyExW(hkeyPins, wszPinName, 0, KEY_READ, &hkeyPinKey) != ERROR_SUCCESS) continue;

        rgPin->strName = CoTaskMemAlloc((strlenW(wszPinName) + 1) * sizeof(WCHAR));
        if (!rgPin->strName) goto error_cleanup;

        strcpyW(rgPin->strName, wszPinName);

        cbData = sizeof(rgPin->bMany);
        lRet = RegQueryValueExW(hkeyPinKey, wszAllowedMany, NULL, &Type, (LPBYTE)&rgPin->bMany, &cbData);
        if (lRet != ERROR_SUCCESS || Type != REG_DWORD)
            goto error_cleanup;

        cbData = sizeof(rgPin->bZero);
        lRet = RegQueryValueExW(hkeyPinKey, wszAllowedZero, NULL, &Type, (LPBYTE)&rgPin->bZero, &cbData);
        if (lRet != ERROR_SUCCESS || Type != REG_DWORD)
            goto error_cleanup;

        cbData = sizeof(rgPin->bOutput);
        lRet = RegQueryValueExW(hkeyPinKey, wszDirection, NULL, &Type, (LPBYTE)&rgPin->bOutput, &cbData);
        if (lRet != ERROR_SUCCESS || Type != REG_DWORD)
            goto error_cleanup;

        cbData = sizeof(rgPin->bRendered);
        lRet = RegQueryValueExW(hkeyPinKey, wszIsRendered, NULL, &Type, (LPBYTE)&rgPin->bRendered, &cbData);
        if (lRet != ERROR_SUCCESS || Type != REG_DWORD)
            goto error_cleanup;

        DEVENUM_ReadPinTypes(hkeyPinKey, rgPin);

        ++rgf2->u.s.cPins;
        continue;

        error_cleanup:

        RegCloseKey(hkeyPinKey);
        if (rgPin->strName) CoTaskMemFree(rgPin->strName);
    }

    RegCloseKey(hkeyPins);

    if (rgPins && !rgf2->u.s.cPins)
    {
        CoTaskMemFree(rgPins);
        rgPins = NULL;
    }

    rgf2->u.s.rgPins = rgPins;
}

321
static HRESULT DEVENUM_RegisterLegacyAmFilters(void)
322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452
{
    HKEY hkeyFilter = NULL;
    DWORD dwFilterSubkeys, i;
    LONG lRet;
    IFilterMapper2 *pMapper = NULL;
    HRESULT hr;

    hr = CoCreateInstance(&CLSID_FilterMapper2, NULL, CLSCTX_INPROC,
                           &IID_IFilterMapper2, (void **) &pMapper);
    if (SUCCEEDED(hr))
    {
        lRet = RegOpenKeyExW(HKEY_CLASSES_ROOT, wszFilterKeyName, 0, KEY_READ, &hkeyFilter);
        hr = HRESULT_FROM_WIN32(lRet);
    }

    if (SUCCEEDED(hr))
    {
        lRet = RegQueryInfoKeyW(hkeyFilter, NULL, NULL, NULL, &dwFilterSubkeys, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
        hr = HRESULT_FROM_WIN32(lRet);
    }

    if (SUCCEEDED(hr))
    {
        for (i = 0; i < dwFilterSubkeys; i++)
        {
            WCHAR wszFilterSubkeyName[64];
            DWORD cName = sizeof(wszFilterSubkeyName) / sizeof(WCHAR);
            HKEY hkeyCategoryBaseKey;
            WCHAR wszRegKey[MAX_PATH];
            HKEY hkeyInstance = NULL;
            HRESULT hr;

            if (RegEnumKeyExW(hkeyFilter, i, wszFilterSubkeyName, &cName, NULL, NULL, NULL, NULL) != ERROR_SUCCESS) continue;

            hr = DEVENUM_GetCategoryKey(&CLSID_LegacyAmFilterCategory, &hkeyCategoryBaseKey, wszRegKey, MAX_PATH);
            if (FAILED(hr)) continue;

            strcatW(wszRegKey, wszRegSeparator);
            strcatW(wszRegKey, wszFilterSubkeyName);

            if (RegOpenKeyExW(HKEY_CLASSES_ROOT, wszRegKey, 0, KEY_READ, &hkeyInstance) == ERROR_SUCCESS)
            {
                RegCloseKey(hkeyInstance);
            }
            else
            {
                /* Filter is registered the IFilterMapper(1)-way in HKCR\Filter. Needs to be added to
                 * legacy am filter category. */
                HKEY hkeyFilterClass = NULL;
                REGFILTER2 rgf2;
                CLSID clsidFilter;
                WCHAR wszFilterName[MAX_PATH];
                DWORD Type;
                DWORD cbData;
                HRESULT res;
                IMoniker *pMoniker = NULL;

                TRACE("Registering %s\n", debugstr_w(wszFilterSubkeyName));

                strcpyW(wszRegKey, clsid_keyname);
                strcatW(wszRegKey, wszRegSeparator);
                strcatW(wszRegKey, wszFilterSubkeyName);

                if (RegOpenKeyExW(HKEY_CLASSES_ROOT, wszRegKey, 0, KEY_READ, &hkeyFilterClass) != ERROR_SUCCESS)
                    continue;

                rgf2.dwVersion = 1;
                rgf2.dwMerit = 0;
                rgf2.u.s.cPins = 0;
                rgf2.u.s.rgPins = NULL;

                cbData = sizeof(wszFilterName);
                if (RegQueryValueExW(hkeyFilterClass, NULL, NULL, &Type, (LPBYTE)wszFilterName, &cbData) != ERROR_SUCCESS ||
                    Type != REG_SZ)
                    goto cleanup;

                cbData = sizeof(rgf2.dwMerit);
                if (RegQueryValueExW(hkeyFilterClass, wszMeritName, NULL, &Type, (LPBYTE)&rgf2.dwMerit, &cbData) != ERROR_SUCCESS ||
                    Type != REG_DWORD)
                    goto cleanup;

                DEVENUM_ReadPins(hkeyFilterClass, &rgf2);

                res = CLSIDFromString(wszFilterSubkeyName, &clsidFilter);
                if (FAILED(res)) goto cleanup;

                IFilterMapper2_RegisterFilter(pMapper, &clsidFilter, wszFilterName, &pMoniker, NULL, NULL, &rgf2);

                if (pMoniker)
                    IMoniker_Release(pMoniker);

                cleanup:

                if (hkeyFilterClass) RegCloseKey(hkeyFilterClass);

                if (rgf2.u.s.rgPins)
                {
                    UINT iPin;

                    for (iPin = 0; iPin < rgf2.u.s.cPins; iPin++)
                    {
                        CoTaskMemFree(rgf2.u.s.rgPins[iPin].strName);

                        if (rgf2.u.s.rgPins[iPin].lpMediaType)
                        {
                            UINT iType;

                            for (iType = 0; iType < rgf2.u.s.rgPins[iPin].nMediaTypes; iType++)
                            {
                                CoTaskMemFree((void*)rgf2.u.s.rgPins[iPin].lpMediaType[iType].clsMajorType);
                                CoTaskMemFree((void*)rgf2.u.s.rgPins[iPin].lpMediaType[iType].clsMinorType);
                            }

                            CoTaskMemFree((void*)rgf2.u.s.rgPins[iPin].lpMediaType);
                        }
                    }

                    CoTaskMemFree((void*)rgf2.u.s.rgPins);
                }
            }
        }
    }

    if (hkeyFilter) RegCloseKey(hkeyFilter);

    if (pMapper)
        IFilterMapper2_Release(pMapper);

    return S_OK;
}

453 454 455
/**********************************************************************
 * DEVENUM_ICreateDevEnum_CreateClassEnumerator
 */
456
static HRESULT WINAPI DEVENUM_ICreateDevEnum_CreateClassEnumerator(
457 458 459 460 461 462 463 464
    ICreateDevEnum * iface,
    REFCLSID clsidDeviceClass,
    IEnumMoniker **ppEnumMoniker,
    DWORD dwFlags)
{
    WCHAR wszRegKey[MAX_PATH];
    HKEY hkey;
    HKEY hbasekey;
465
    HRESULT hr;
466
    CreateDevEnumImpl *This = (CreateDevEnumImpl *)iface;
467

468
    TRACE("(%p)->(%s, %p, %x)\n\tDeviceClass:\t%s\n", This, debugstr_guid(clsidDeviceClass), ppEnumMoniker, dwFlags, debugstr_guid(clsidDeviceClass));
469 470 471 472 473 474

    if (!ppEnumMoniker)
        return E_POINTER;

    *ppEnumMoniker = NULL;

475 476 477 478 479
    if (IsEqualGUID(clsidDeviceClass, &CLSID_LegacyAmFilterCategory))
    {
        DEVENUM_RegisterLegacyAmFilters();
    }

480 481 482
    hr = DEVENUM_GetCategoryKey(clsidDeviceClass, &hbasekey, wszRegKey, MAX_PATH);
    if (FAILED(hr))
        return hr;
483 484 485

    if (RegOpenKeyW(hbasekey, wszRegKey, &hkey) != ERROR_SUCCESS)
    {
486 487
        if (IsEqualGUID(clsidDeviceClass, &CLSID_AudioRendererCategory) ||
            IsEqualGUID(clsidDeviceClass, &CLSID_AudioInputDeviceCategory) ||
488
            IsEqualGUID(clsidDeviceClass, &CLSID_VideoInputDeviceCategory) ||
489 490
            IsEqualGUID(clsidDeviceClass, &CLSID_MidiRendererCategory))
        {
491
             hr = DEVENUM_CreateSpecialCategories();
492 493 494 495 496 497 498 499 500 501 502 503 504 505
             if (FAILED(hr))
                 return hr;
             if (RegOpenKeyW(hbasekey, wszRegKey, &hkey) != ERROR_SUCCESS)
             {
                 ERR("Couldn't open registry key for special device: %s\n",
                     debugstr_guid(clsidDeviceClass));
                 return S_FALSE;
             }
        }
        else
        {
            FIXME("Category %s not found\n", debugstr_guid(clsidDeviceClass));
            return S_FALSE;
        }
506 507
    }

508
    return DEVENUM_IEnumMoniker_Construct(hkey, ppEnumMoniker);
509 510 511 512 513
}

/**********************************************************************
 * ICreateDevEnum_Vtbl
 */
514
static const ICreateDevEnumVtbl ICreateDevEnum_Vtbl =
515 516 517 518 519 520 521 522 523 524
{
    DEVENUM_ICreateDevEnum_QueryInterface,
    DEVENUM_ICreateDevEnum_AddRef,
    DEVENUM_ICreateDevEnum_Release,
    DEVENUM_ICreateDevEnum_CreateClassEnumerator,
};

/**********************************************************************
 * static CreateDevEnum instance
 */
525
CreateDevEnumImpl DEVENUM_CreateDevEnum = { &ICreateDevEnum_Vtbl };
526

527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
/**********************************************************************
 * DEVENUM_CreateAMCategoryKey (INTERNAL)
 *
 * Creates a registry key for a category at HKEY_CURRENT_USER\Software\
 * Microsoft\ActiveMovie\devenum\{clsid}
 */
static HRESULT DEVENUM_CreateAMCategoryKey(const CLSID * clsidCategory)
{
    WCHAR wszRegKey[MAX_PATH];
    HRESULT res = S_OK;
    HKEY hkeyDummy = NULL;

    strcpyW(wszRegKey, wszActiveMovieKey);

    if (!StringFromGUID2(clsidCategory, wszRegKey + strlenW(wszRegKey), sizeof(wszRegKey)/sizeof(wszRegKey[0]) - strlenW(wszRegKey)))
        res = E_INVALIDARG;

    if (SUCCEEDED(res))
545 546 547 548
    {
        LONG lRes = RegCreateKeyW(HKEY_CURRENT_USER, wszRegKey, &hkeyDummy);
        res = HRESULT_FROM_WIN32(lRes);
    }
549 550 551 552 553 554 555 556 557

    if (hkeyDummy)
        RegCloseKey(hkeyDummy);

    if (FAILED(res))
        ERR("Failed to create key HKEY_CURRENT_USER\\%s\n", debugstr_w(wszRegKey));

    return res;
}
558 559

/**********************************************************************
560
 * DEVENUM_CreateSpecialCategories (INTERNAL)
561 562 563
 *
 * Creates the keys in the registry for the dynamic categories
 */
564
static HRESULT DEVENUM_CreateSpecialCategories(void)
565
{
566 567 568
    HRESULT res;
    WCHAR szDSoundNameFormat[MAX_PATH + 1];
    WCHAR szDSoundName[MAX_PATH + 1];
569 570 571 572 573 574 575 576 577 578 579 580 581 582 583
    DWORD iDefaultDevice = -1;
    UINT numDevs;
    IFilterMapper2 * pMapper = NULL;
    REGFILTER2 rf2;
    REGFILTERPINS2 rfp2;

    rf2.dwVersion = 2;
    rf2.dwMerit = MERIT_PREFERRED;
    rf2.u.s1.cPins2 = 1;
    rf2.u.s1.rgPins2 = &rfp2;
    rfp2.cInstances = 1;
    rfp2.nMediums = 0;
    rfp2.lpMedium = NULL;
    rfp2.clsPinCategory = &IID_NULL;

584 585
    if (!LoadStringW(DEVENUM_hInstance, IDS_DEVENUM_DS, szDSoundNameFormat, sizeof(szDSoundNameFormat)/sizeof(szDSoundNameFormat[0])-1))
    {
586
        ERR("Couldn't get string resource (GetLastError() is %d)\n", GetLastError());
587 588 589
        return HRESULT_FROM_WIN32(GetLastError());
    }

590 591 592
    res = CoCreateInstance(&CLSID_FilterMapper2, NULL, CLSCTX_INPROC,
                           &IID_IFilterMapper2, (void **) &pMapper);
    /*
593
     * Fill in info for devices
594 595 596 597 598 599 600 601
     */
    if (SUCCEEDED(res))
    {
        UINT i;
        WAVEOUTCAPSW wocaps;
	WAVEINCAPSW wicaps;
        MIDIOUTCAPSW mocaps;
        REGPINTYPES * pTypes;
602

603 604
	numDevs = waveOutGetNumDevs();

605 606 607 608
        res = DEVENUM_CreateAMCategoryKey(&CLSID_AudioRendererCategory);
        if (FAILED(res)) /* can't register any devices in this category */
            numDevs = 0;

609
	rfp2.dwFlags = REG_PINFLAG_B_RENDERER;
610 611 612 613 614
	for (i = 0; i < numDevs; i++)
	{
	    if (waveOutGetDevCapsW(i, &wocaps, sizeof(WAVEOUTCAPSW))
	        == MMSYSERR_NOERROR)
	    {
615 616
                IMoniker * pMoniker = NULL;

617 618 619 620 621 622 623 624 625 626 627 628 629 630
                rfp2.nMediaTypes = 1;
                pTypes = CoTaskMemAlloc(rfp2.nMediaTypes * sizeof(REGPINTYPES));
                if (!pTypes)
                {
                    IFilterMapper2_Release(pMapper);
                    return E_OUTOFMEMORY;
                }
                /* FIXME: Native devenum seems to register a lot more types for
                 * DSound than we do. Not sure what purpose they serve */
                pTypes[0].clsMajorType = &MEDIATYPE_Audio;
                pTypes[0].clsMinorType = &MEDIASUBTYPE_PCM;

                rfp2.lpMediaType = pTypes;

631
                res = IFilterMapper2_RegisterFilter(pMapper,
632 633 634 635 636 637 638 639 640 641 642 643
		                              &CLSID_AudioRender,
					      wocaps.szPname,
					      &pMoniker,
					      &CLSID_AudioRendererCategory,
					      wocaps.szPname,
					      &rf2);

                /* FIXME: do additional stuff with IMoniker here, depending on what RegisterFilter does */

		if (pMoniker)
		    IMoniker_Release(pMoniker);

644 645
		wsprintfW(szDSoundName, szDSoundNameFormat, wocaps.szPname);
	        res = IFilterMapper2_RegisterFilter(pMapper,
646
		                              &CLSID_DSoundRender,
647
					      szDSoundName,
648 649
					      &pMoniker,
					      &CLSID_AudioRendererCategory,
650
					      szDSoundName,
651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668
					      &rf2);

                /* FIXME: do additional stuff with IMoniker here, depending on what RegisterFilter does */

		if (pMoniker)
		    IMoniker_Release(pMoniker);

		if (i == iDefaultDevice)
		{
		    FIXME("Default device\n");
		}

                CoTaskMemFree(pTypes);
	    }
	}

        numDevs = waveInGetNumDevs();

669 670 671 672
        res = DEVENUM_CreateAMCategoryKey(&CLSID_AudioInputDeviceCategory);
        if (FAILED(res)) /* can't register any devices in this category */
            numDevs = 0;

673
	rfp2.dwFlags = REG_PINFLAG_B_OUTPUT;
674 675 676 677 678
        for (i = 0; i < numDevs; i++)
        {
            if (waveInGetDevCapsW(i, &wicaps, sizeof(WAVEINCAPSW))
                == MMSYSERR_NOERROR)
            {
679 680
                IMoniker * pMoniker = NULL;

681 682 683 684 685 686 687 688 689 690 691 692 693 694
                rfp2.nMediaTypes = 1;
                pTypes = CoTaskMemAlloc(rfp2.nMediaTypes * sizeof(REGPINTYPES));
                if (!pTypes)
                {
                    IFilterMapper2_Release(pMapper);
                    return E_OUTOFMEMORY;
                }

                /* FIXME: Not sure if these are correct */
                pTypes[0].clsMajorType = &MEDIATYPE_Audio;
                pTypes[0].clsMinorType = &MEDIASUBTYPE_PCM;

                rfp2.lpMediaType = pTypes;

695
	        res = IFilterMapper2_RegisterFilter(pMapper,
696 697 698 699 700 701 702 703 704 705 706 707 708 709 710
		                              &CLSID_AudioRecord,
					      wicaps.szPname,
					      &pMoniker,
					      &CLSID_AudioInputDeviceCategory,
					      wicaps.szPname,
					      &rf2);

                /* FIXME: do additional stuff with IMoniker here, depending on what RegisterFilter does */

		if (pMoniker)
		    IMoniker_Release(pMoniker);

                CoTaskMemFree(pTypes);
	    }
	}
711

712 713
	numDevs = midiOutGetNumDevs();

714 715 716 717
        res = DEVENUM_CreateAMCategoryKey(&CLSID_MidiRendererCategory);
        if (FAILED(res)) /* can't register any devices in this category */
            numDevs = 0;

718
	rfp2.dwFlags = REG_PINFLAG_B_RENDERER;
719 720 721 722 723
	for (i = 0; i < numDevs; i++)
	{
	    if (midiOutGetDevCapsW(i, &mocaps, sizeof(MIDIOUTCAPSW))
	        == MMSYSERR_NOERROR)
	    {
724 725
                IMoniker * pMoniker = NULL;

726 727 728 729 730 731 732 733 734 735 736 737 738 739
                rfp2.nMediaTypes = 1;
                pTypes = CoTaskMemAlloc(rfp2.nMediaTypes * sizeof(REGPINTYPES));
                if (!pTypes)
                {
                    IFilterMapper2_Release(pMapper);
                    return E_OUTOFMEMORY;
                }

                /* FIXME: Not sure if these are correct */
                pTypes[0].clsMajorType = &MEDIATYPE_Midi;
                pTypes[0].clsMinorType = &MEDIASUBTYPE_None;

                rfp2.lpMediaType = pTypes;

740
                res = IFilterMapper2_RegisterFilter(pMapper,
741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761
		                              &CLSID_AVIMIDIRender,
					      mocaps.szPname,
					      &pMoniker,
					      &CLSID_MidiRendererCategory,
					      mocaps.szPname,
					      &rf2);

                /* FIXME: do additional stuff with IMoniker here, depending on what RegisterFilter does */
		/* Native version sets MidiOutId */

		if (pMoniker)
		    IMoniker_Release(pMoniker);

		if (i == iDefaultDevice)
		{
		    FIXME("Default device\n");
		}

                CoTaskMemFree(pTypes);
	    }
	}
762 763 764 765
        res = DEVENUM_CreateAMCategoryKey(&CLSID_VideoInputDeviceCategory);
        if (SUCCEEDED(res))
            for (i = 0; i < 10; i++)
            {
766
                WCHAR szDeviceName[32], szDeviceVersion[32], szDevicePath[10];
767 768 769 770 771 772

                if (capGetDriverDescriptionW ((WORD) i,
                                              szDeviceName, sizeof(szDeviceName)/sizeof(WCHAR),
                                              szDeviceVersion, sizeof(szDeviceVersion)/sizeof(WCHAR)))
                {
                    IMoniker * pMoniker = NULL;
773 774 775 776
                    IPropertyBag * pPropBag = NULL;
                    WCHAR dprintf[] = { 'v','i','d','e','o','%','d',0 };
                    snprintfW(szDevicePath, sizeof(szDevicePath)/sizeof(WCHAR), dprintf, i);
                    /* The above code prevents 1 device with a different ID overwriting another */
777 778 779 780 781 782 783 784 785

                    rfp2.nMediaTypes = 1;
                    pTypes = CoTaskMemAlloc(rfp2.nMediaTypes * sizeof(REGPINTYPES));
                    if (!pTypes) {
                        IFilterMapper2_Release(pMapper);
                        return E_OUTOFMEMORY;
                    }

                    pTypes[0].clsMajorType = &MEDIATYPE_Video;
786
                    pTypes[0].clsMinorType = &MEDIASUBTYPE_None;
787 788 789 790 791 792 793 794

                    rfp2.lpMediaType = pTypes;

                    res = IFilterMapper2_RegisterFilter(pMapper,
                                                        &CLSID_VfwCapture,
                                                        szDeviceName,
                                                        &pMoniker,
                                                        &CLSID_VideoInputDeviceCategory,
795
                                                        szDevicePath,
796 797
                                                        &rf2);

798 799 800 801
                    if (pMoniker) {
                       OLECHAR wszVfwIndex[] = { 'V','F','W','I','n','d','e','x',0 };
                       VARIANT var;
                       V_VT(&var) = VT_I4;
802
                       V_UNION(&var, ulVal) = i;
803 804 805 806 807
                       res = IMoniker_BindToStorage(pMoniker, NULL, NULL, &IID_IPropertyBag, (LPVOID)&pPropBag);
                       if (SUCCEEDED(res))
                          res = IPropertyBag_Write(pPropBag, wszVfwIndex, &var);
                       IMoniker_Release(pMoniker);
                    }
808 809 810 811 812

                    if (i == iDefaultDevice) FIXME("Default device\n");
                    CoTaskMemFree(pTypes);
                }
            }
813 814 815 816 817 818
    }

    if (pMapper)
        IFilterMapper2_Release(pMapper);
    return res;
}