dlls/windowscodecs/info.c

   1 /*
   2  * Copyright 2009 Vincent Povirk for CodeWeavers
   3  * Copyright 2012 Dmitry Timoshkov
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "config.h"
  21
  22 #include <stdarg.h>
  23
  24 #define COBJMACROS
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winreg.h"
  29 #include "objbase.h"
  30 #include "wincodec.h"
  31 #include "wincodecsdk.h"
  32
  33 #include "wincodecs_private.h"
  34
  35 #include "wine/debug.h"
  36 #include "wine/unicode.h"
  37 #include "wine/list.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  40
  41 static const WCHAR mimetypes_valuename[] = {'M','i','m','e','T','y','p','e','s',0};
  42 static const WCHAR author_valuename[] = {'A','u','t','h','o','r',0};
  43 static const WCHAR friendlyname_valuename[] = {'F','r','i','e','n','d','l','y','N','a','m','e',0};
  44 static const WCHAR pixelformats_keyname[] = {'P','i','x','e','l','F','o','r','m','a','t','s',0};
  45 static const WCHAR formats_keyname[] = {'F','o','r','m','a','t','s',0};
  46 static const WCHAR containerformat_valuename[] = {'C','o','n','t','a','i','n','e','r','F','o','r','m','a','t',0};
  47 static const WCHAR metadataformat_valuename[] = {'M','e','t','a','d','a','t','a','F','o','r','m','a','t',0};
  48 static const WCHAR vendor_valuename[] = {'V','e','n','d','o','r',0};
  49 static const WCHAR version_valuename[] = {'V','e','r','s','i','o','n',0};
  50 static const WCHAR specversion_valuename[] = {'S','p','e','c','V','e','r','s','i','o','n',0};
  51 static const WCHAR bitsperpixel_valuename[] = {'B','i','t','L','e','n','g','t','h',0};
  52 static const WCHAR channelcount_valuename[] = {'C','h','a','n','n','e','l','C','o','u','n','t',0};
  53 static const WCHAR channelmasks_keyname[] = {'C','h','a','n','n','e','l','M','a','s','k','s',0};
  54 static const WCHAR numericrepresentation_valuename[] = {'N','u','m','e','r','i','c','R','e','p','r','e','s','e','n','t','a','t','i','o','n',0};
  55 static const WCHAR supportstransparency_valuename[] = {'S','u','p','p','o','r','t','s','T','r','a','n','s','p','a','r','e','n','c','y',0};
  56 static const WCHAR requiresfullstream_valuename[] = {'R','e','q','u','i','r','e','s','F','u','l','l','S','t','r','e','a','m',0};
  57 static const WCHAR supportspadding_valuename[] = {'S','u','p','p','o','r','t','s','P','a','d','d','i','n','g',0};
  58 static const WCHAR fileextensions_valuename[] = {'F','i','l','e','E','x','t','e','n','s','i','o','n','s',0};
  59
  60 static HRESULT ComponentInfo_GetStringValue(HKEY classkey, LPCWSTR value,
  61     UINT buffer_size, WCHAR *buffer, UINT *actual_size)
  62 {
  63     LONG ret;
  64     DWORD cbdata=buffer_size * sizeof(WCHAR);
  65
  66     if (!actual_size)
  67         return E_INVALIDARG;
  68
  69     ret = RegGetValueW(classkey, NULL, value, RRF_RT_REG_SZ|RRF_NOEXPAND, NULL,
  70         buffer, &cbdata);
  71
  72     if (ret == ERROR_FILE_NOT_FOUND)
  73     {
  74         *actual_size = 0;
  75         return S_OK;
  76     }
  77
  78     if (ret == 0 || ret == ERROR_MORE_DATA)
  79         *actual_size = cbdata/sizeof(WCHAR);
  80
  81     if (!buffer && buffer_size != 0)
  82         /* Yes, native returns the correct size in this case. */
  83         return E_INVALIDARG;
  84
  85     if (ret == ERROR_MORE_DATA)
  86         return WINCODEC_ERR_INSUFFICIENTBUFFER;
  87
  88     return HRESULT_FROM_WIN32(ret);
  89 }
  90
  91 static HRESULT ComponentInfo_GetGUIDValue(HKEY classkey, LPCWSTR value,
  92     GUID *result)
  93 {
  94     LONG ret;
  95     WCHAR guid_string[39];
  96     DWORD cbdata = sizeof(guid_string);
  97     HRESULT hr;
  98
  99     if (!result)
 100         return E_INVALIDARG;
 101
 102     ret = RegGetValueW(classkey, NULL, value, RRF_RT_REG_SZ|RRF_NOEXPAND, NULL,
 103         guid_string, &cbdata);
 104
 105     if (ret != ERROR_SUCCESS)
 106         return HRESULT_FROM_WIN32(ret);
 107
 108     if (cbdata < sizeof(guid_string))
 109     {
 110         ERR("incomplete GUID value\n");
 111         return E_FAIL;
 112     }
 113
 114     hr = CLSIDFromString(guid_string, result);
 115
 116     return hr;
 117 }
 118
 119 static HRESULT ComponentInfo_GetDWORDValue(HKEY classkey, LPCWSTR value,
 120     DWORD *result)
 121 {
 122     LONG ret;
 123     DWORD cbdata = sizeof(DWORD);
 124
 125     if (!result)
 126         return E_INVALIDARG;
 127
 128     ret = RegGetValueW(classkey, NULL, value, RRF_RT_DWORD, NULL,
 129         result, &cbdata);
 130
 131     if (ret == ERROR_FILE_NOT_FOUND)
 132     {
 133         *result = 0;
 134         return S_OK;
 135     }
 136
 137     return HRESULT_FROM_WIN32(ret);
 138 }
 139
 140 static HRESULT ComponentInfo_GetGuidList(HKEY classkey, LPCWSTR subkeyname,
 141     UINT buffersize, GUID *buffer, UINT *actual_size)
 142 {
 143     LONG ret;
 144     HKEY subkey;
 145     UINT items_returned;
 146     WCHAR guid_string[39];
 147     DWORD guid_string_size;
 148     HRESULT hr=S_OK;
 149
 150     if (!actual_size)
 151         return E_INVALIDARG;
 152
 153     ret = RegOpenKeyExW(classkey, subkeyname, 0, KEY_READ, &subkey);
 154     if (ret != ERROR_SUCCESS) return HRESULT_FROM_WIN32(ret);
 155
 156     if (buffer)
 157     {
 158         items_returned = 0;
 159         guid_string_size = 39;
 160         while (items_returned < buffersize)
 161         {
 162             ret = RegEnumKeyExW(subkey, items_returned, guid_string,
 163                 &guid_string_size, NULL, NULL, NULL, NULL);
 164
 165             if (ret != ERROR_SUCCESS)
 166             {
 167                 hr = HRESULT_FROM_WIN32(ret);
 168                 break;
 169             }
 170
 171             if (guid_string_size != 38)
 172             {
 173                 hr = E_FAIL;
 174                 break;
 175             }
 176
 177             hr = CLSIDFromString(guid_string, &buffer[items_returned]);
 178             if (FAILED(hr))
 179                 break;
 180
 181             items_returned++;
 182             guid_string_size = 39;
 183         }
 184
 185         if (ret == ERROR_NO_MORE_ITEMS)
 186             hr = S_OK;
 187
 188         *actual_size = items_returned;
 189     }
 190     else
 191     {
 192         ret = RegQueryInfoKeyW(subkey, NULL, NULL, NULL, actual_size, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
 193         if (ret != ERROR_SUCCESS)
 194             hr = HRESULT_FROM_WIN32(ret);
 195     }
 196
 197     RegCloseKey(subkey);
 198
 199     return hr;
 200 }
 201
 202 typedef struct {
 203     IWICBitmapDecoderInfo IWICBitmapDecoderInfo_iface;
 204     LONG ref;
 205     HKEY classkey;
 206     CLSID clsid;
 207 } BitmapDecoderInfo;
 208
 209 static inline BitmapDecoderInfo *impl_from_IWICBitmapDecoderInfo(IWICBitmapDecoderInfo *iface)
 210 {
 211     return CONTAINING_RECORD(iface, BitmapDecoderInfo, IWICBitmapDecoderInfo_iface);
 212 }
 213
 214 static HRESULT WINAPI BitmapDecoderInfo_QueryInterface(IWICBitmapDecoderInfo *iface, REFIID iid,
 215     void **ppv)
 216 {
 217     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 218     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 219
 220     if (!ppv) return E_INVALIDARG;
 221
 222     if (IsEqualIID(&IID_IUnknown, iid) ||
 223         IsEqualIID(&IID_IWICComponentInfo, iid) ||
 224         IsEqualIID(&IID_IWICBitmapCodecInfo, iid) ||
 225         IsEqualIID(&IID_IWICBitmapDecoderInfo ,iid))
 226     {
 227         *ppv = This;
 228     }
 229     else
 230     {
 231         *ppv = NULL;
 232         return E_NOINTERFACE;
 233     }
 234
 235     IUnknown_AddRef((IUnknown*)*ppv);
 236     return S_OK;
 237 }
 238
 239 static ULONG WINAPI BitmapDecoderInfo_AddRef(IWICBitmapDecoderInfo *iface)
 240 {
 241     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 242     ULONG ref = InterlockedIncrement(&This->ref);
 243
 244     TRACE("(%p) refcount=%u\n", iface, ref);
 245
 246     return ref;
 247 }
 248
 249 static ULONG WINAPI BitmapDecoderInfo_Release(IWICBitmapDecoderInfo *iface)
 250 {
 251     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 252     ULONG ref = InterlockedDecrement(&This->ref);
 253
 254     TRACE("(%p) refcount=%u\n", iface, ref);
 255
 256     if (ref == 0)
 257     {
 258         RegCloseKey(This->classkey);
 259         HeapFree(GetProcessHeap(), 0, This);
 260     }
 261
 262     return ref;
 263 }
 264
 265 static HRESULT WINAPI BitmapDecoderInfo_GetComponentType(IWICBitmapDecoderInfo *iface,
 266     WICComponentType *pType)
 267 {
 268     TRACE("(%p,%p)\n", iface, pType);
 269     if (!pType) return E_INVALIDARG;
 270     *pType = WICDecoder;
 271     return S_OK;
 272 }
 273
 274 static HRESULT WINAPI BitmapDecoderInfo_GetCLSID(IWICBitmapDecoderInfo *iface, CLSID *pclsid)
 275 {
 276     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 277     TRACE("(%p,%p)\n", iface, pclsid);
 278
 279     if (!pclsid)
 280         return E_INVALIDARG;
 281
 282     memcpy(pclsid, &This->clsid, sizeof(CLSID));
 283
 284     return S_OK;
 285 }
 286
 287 static HRESULT WINAPI BitmapDecoderInfo_GetSigningStatus(IWICBitmapDecoderInfo *iface, DWORD *pStatus)
 288 {
 289     FIXME("(%p,%p): stub\n", iface, pStatus);
 290     return E_NOTIMPL;
 291 }
 292
 293 static HRESULT WINAPI BitmapDecoderInfo_GetAuthor(IWICBitmapDecoderInfo *iface, UINT cchAuthor,
 294     WCHAR *wzAuthor, UINT *pcchActual)
 295 {
 296     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 297
 298     TRACE("(%p,%u,%p,%p)\n", iface, cchAuthor, wzAuthor, pcchActual);
 299
 300     return ComponentInfo_GetStringValue(This->classkey, author_valuename,
 301         cchAuthor, wzAuthor, pcchActual);
 302 }
 303
 304 static HRESULT WINAPI BitmapDecoderInfo_GetVendorGUID(IWICBitmapDecoderInfo *iface, GUID *pguidVendor)
 305 {
 306     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 307
 308     TRACE("(%p,%p)\n", iface, pguidVendor);
 309
 310     return ComponentInfo_GetGUIDValue(This->classkey, vendor_valuename, pguidVendor);
 311 }
 312
 313 static HRESULT WINAPI BitmapDecoderInfo_GetVersion(IWICBitmapDecoderInfo *iface, UINT cchVersion,
 314     WCHAR *wzVersion, UINT *pcchActual)
 315 {
 316     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 317
 318     TRACE("(%p,%u,%p,%p)\n", iface, cchVersion, wzVersion, pcchActual);
 319
 320     return ComponentInfo_GetStringValue(This->classkey, version_valuename,
 321         cchVersion, wzVersion, pcchActual);
 322 }
 323
 324 static HRESULT WINAPI BitmapDecoderInfo_GetSpecVersion(IWICBitmapDecoderInfo *iface, UINT cchSpecVersion,
 325     WCHAR *wzSpecVersion, UINT *pcchActual)
 326 {
 327     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 328
 329     TRACE("(%p,%u,%p,%p)\n", iface, cchSpecVersion, wzSpecVersion, pcchActual);
 330
 331     return ComponentInfo_GetStringValue(This->classkey, specversion_valuename,
 332         cchSpecVersion, wzSpecVersion, pcchActual);
 333 }
 334
 335 static HRESULT WINAPI BitmapDecoderInfo_GetFriendlyName(IWICBitmapDecoderInfo *iface, UINT cchFriendlyName,
 336     WCHAR *wzFriendlyName, UINT *pcchActual)
 337 {
 338     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 339
 340     TRACE("(%p,%u,%p,%p)\n", iface, cchFriendlyName, wzFriendlyName, pcchActual);
 341
 342     return ComponentInfo_GetStringValue(This->classkey, friendlyname_valuename,
 343         cchFriendlyName, wzFriendlyName, pcchActual);
 344 }
 345
 346 static HRESULT WINAPI BitmapDecoderInfo_GetContainerFormat(IWICBitmapDecoderInfo *iface,
 347     GUID *pguidContainerFormat)
 348 {
 349     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 350     TRACE("(%p,%p)\n", iface, pguidContainerFormat);
 351     return ComponentInfo_GetGUIDValue(This->classkey, containerformat_valuename, pguidContainerFormat);
 352 }
 353
 354 static HRESULT WINAPI BitmapDecoderInfo_GetPixelFormats(IWICBitmapDecoderInfo *iface,
 355     UINT cFormats, GUID *pguidPixelFormats, UINT *pcActual)
 356 {
 357     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 358     TRACE("(%p,%u,%p,%p)\n", iface, cFormats, pguidPixelFormats, pcActual);
 359     return ComponentInfo_GetGuidList(This->classkey, formats_keyname, cFormats, pguidPixelFormats, pcActual);
 360 }
 361
 362 static HRESULT WINAPI BitmapDecoderInfo_GetColorManagementVersion(IWICBitmapDecoderInfo *iface,
 363     UINT cchColorManagementVersion, WCHAR *wzColorManagementVersion, UINT *pcchActual)
 364 {
 365     FIXME("(%p,%u,%p,%p): stub\n", iface, cchColorManagementVersion, wzColorManagementVersion, pcchActual);
 366     return E_NOTIMPL;
 367 }
 368
 369 static HRESULT WINAPI BitmapDecoderInfo_GetDeviceManufacturer(IWICBitmapDecoderInfo *iface,
 370     UINT cchDeviceManufacturer, WCHAR *wzDeviceManufacturer, UINT *pcchActual)
 371 {
 372     FIXME("(%p,%u,%p,%p): stub\n", iface, cchDeviceManufacturer, wzDeviceManufacturer, pcchActual);
 373     return E_NOTIMPL;
 374 }
 375
 376 static HRESULT WINAPI BitmapDecoderInfo_GetDeviceModels(IWICBitmapDecoderInfo *iface,
 377     UINT cchDeviceModels, WCHAR *wzDeviceModels, UINT *pcchActual)
 378 {
 379     FIXME("(%p,%u,%p,%p): stub\n", iface, cchDeviceModels, wzDeviceModels, pcchActual);
 380     return E_NOTIMPL;
 381 }
 382
 383 static HRESULT WINAPI BitmapDecoderInfo_GetMimeTypes(IWICBitmapDecoderInfo *iface,
 384     UINT cchMimeTypes, WCHAR *wzMimeTypes, UINT *pcchActual)
 385 {
 386     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 387
 388     TRACE("(%p,%u,%p,%p)\n", iface, cchMimeTypes, wzMimeTypes, pcchActual);
 389
 390     return ComponentInfo_GetStringValue(This->classkey, mimetypes_valuename,
 391         cchMimeTypes, wzMimeTypes, pcchActual);
 392 }
 393
 394 static HRESULT WINAPI BitmapDecoderInfo_GetFileExtensions(IWICBitmapDecoderInfo *iface,
 395     UINT cchFileExtensions, WCHAR *wzFileExtensions, UINT *pcchActual)
 396 {
 397     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 398
 399     TRACE("(%p,%u,%p,%p)\n", iface, cchFileExtensions, wzFileExtensions, pcchActual);
 400
 401     return ComponentInfo_GetStringValue(This->classkey, fileextensions_valuename,
 402         cchFileExtensions, wzFileExtensions, pcchActual);
 403 }
 404
 405 static HRESULT WINAPI BitmapDecoderInfo_DoesSupportAnimation(IWICBitmapDecoderInfo *iface,
 406     BOOL *pfSupportAnimation)
 407 {
 408     FIXME("(%p,%p): stub\n", iface, pfSupportAnimation);
 409     return E_NOTIMPL;
 410 }
 411
 412 static HRESULT WINAPI BitmapDecoderInfo_DoesSupportChromaKey(IWICBitmapDecoderInfo *iface,
 413     BOOL *pfSupportChromaKey)
 414 {
 415     FIXME("(%p,%p): stub\n", iface, pfSupportChromaKey);
 416     return E_NOTIMPL;
 417 }
 418
 419 static HRESULT WINAPI BitmapDecoderInfo_DoesSupportLossless(IWICBitmapDecoderInfo *iface,
 420     BOOL *pfSupportLossless)
 421 {
 422     FIXME("(%p,%p): stub\n", iface, pfSupportLossless);
 423     return E_NOTIMPL;
 424 }
 425
 426 static HRESULT WINAPI BitmapDecoderInfo_DoesSupportMultiframe(IWICBitmapDecoderInfo *iface,
 427     BOOL *pfSupportMultiframe)
 428 {
 429     FIXME("(%p,%p): stub\n", iface, pfSupportMultiframe);
 430     return E_NOTIMPL;
 431 }
 432
 433 static HRESULT WINAPI BitmapDecoderInfo_MatchesMimeType(IWICBitmapDecoderInfo *iface,
 434     LPCWSTR wzMimeType, BOOL *pfMatches)
 435 {
 436     FIXME("(%p,%s,%p): stub\n", iface, debugstr_w(wzMimeType), pfMatches);
 437     return E_NOTIMPL;
 438 }
 439
 440 static HRESULT WINAPI BitmapDecoderInfo_GetPatterns(IWICBitmapDecoderInfo *iface,
 441     UINT cbSizePatterns, WICBitmapPattern *pPatterns, UINT *pcPatterns, UINT *pcbPatternsActual)
 442 {
 443     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 444     UINT pattern_count=0, patterns_size=0;
 445     WCHAR subkeyname[11];
 446     LONG res;
 447     HKEY patternskey, patternkey;
 448     static const WCHAR uintformatW[] = {'%','u',0};
 449     static const WCHAR patternsW[] = {'P','a','t','t','e','r','n','s',0};
 450     static const WCHAR positionW[] = {'P','o','s','i','t','i','o','n',0};
 451     static const WCHAR lengthW[] = {'L','e','n','g','t','h',0};
 452     static const WCHAR patternW[] = {'P','a','t','t','e','r','n',0};
 453     static const WCHAR maskW[] = {'M','a','s','k',0};
 454     static const WCHAR endofstreamW[] = {'E','n','d','O','f','S','t','r','e','a','m',0};
 455     HRESULT hr=S_OK;
 456     UINT i;
 457     BYTE *bPatterns=(BYTE*)pPatterns;
 458     DWORD length, valuesize;
 459
 460     TRACE("(%p,%i,%p,%p,%p)\n", iface, cbSizePatterns, pPatterns, pcPatterns, pcbPatternsActual);
 461
 462     res = RegOpenKeyExW(This->classkey, patternsW, 0, KEY_READ, &patternskey);
 463     if (res != ERROR_SUCCESS) return HRESULT_FROM_WIN32(res);
 464
 465     res = RegQueryInfoKeyW(patternskey, NULL, NULL, NULL, &pattern_count, NULL, NULL, NULL, NULL, NULL, NULL, NULL);
 466     if (res == ERROR_SUCCESS)
 467     {
 468         patterns_size = pattern_count * sizeof(WICBitmapPattern);
 469
 470         for (i=0; i<pattern_count; i++)
 471         {
 472             snprintfW(subkeyname, 11, uintformatW, i);
 473             res = RegOpenKeyExW(patternskey, subkeyname, 0, KEY_READ, &patternkey);
 474             if (res == ERROR_SUCCESS)
 475             {
 476                 valuesize = sizeof(ULONG);
 477                 res = RegGetValueW(patternkey, NULL, lengthW, RRF_RT_DWORD, NULL,
 478                     &length, &valuesize);
 479                 patterns_size += length*2;
 480
 481                 if ((cbSizePatterns >= patterns_size) && (res == ERROR_SUCCESS))
 482                 {
 483                     pPatterns[i].Length = length;
 484
 485                     pPatterns[i].EndOfStream = 0;
 486                     valuesize = sizeof(BOOL);
 487                     RegGetValueW(patternkey, NULL, endofstreamW, RRF_RT_DWORD, NULL,
 488                         &pPatterns[i].EndOfStream, &valuesize);
 489
 490                     pPatterns[i].Position.QuadPart = 0;
 491                     valuesize = sizeof(ULARGE_INTEGER);
 492                     res = RegGetValueW(patternkey, NULL, positionW, RRF_RT_DWORD|RRF_RT_QWORD, NULL,
 493                         &pPatterns[i].Position, &valuesize);
 494
 495                     if (res == ERROR_SUCCESS)
 496                     {
 497                         pPatterns[i].Pattern = bPatterns+patterns_size-length*2;
 498                         valuesize = length;
 499                         res = RegGetValueW(patternkey, NULL, patternW, RRF_RT_REG_BINARY, NULL,
 500                             pPatterns[i].Pattern, &valuesize);
 501                     }
 502
 503                     if (res == ERROR_SUCCESS)
 504                     {
 505                         pPatterns[i].Mask = bPatterns+patterns_size-length;
 506                         valuesize = length;
 507                         res = RegGetValueW(patternkey, NULL, maskW, RRF_RT_REG_BINARY, NULL,
 508                             pPatterns[i].Mask, &valuesize);
 509                     }
 510                 }
 511
 512                 RegCloseKey(patternkey);
 513             }
 514             if (res != ERROR_SUCCESS)
 515             {
 516                 hr = HRESULT_FROM_WIN32(res);
 517                 break;
 518             }
 519         }
 520     }
 521     else hr = HRESULT_FROM_WIN32(res);
 522
 523     RegCloseKey(patternskey);
 524
 525     if (hr == S_OK)
 526     {
 527         *pcPatterns = pattern_count;
 528         *pcbPatternsActual = patterns_size;
 529         if (pPatterns && cbSizePatterns < patterns_size)
 530             hr = WINCODEC_ERR_INSUFFICIENTBUFFER;
 531     }
 532
 533     return hr;
 534 }
 535
 536 static HRESULT WINAPI BitmapDecoderInfo_MatchesPattern(IWICBitmapDecoderInfo *iface,
 537     IStream *pIStream, BOOL *pfMatches)
 538 {
 539     WICBitmapPattern *patterns;
 540     UINT pattern_count=0, patterns_size=0;
 541     HRESULT hr;
 542     UINT i;
 543     ULONG pos;
 544     BYTE *data=NULL;
 545     ULONG datasize=0;
 546     ULONG bytesread;
 547     LARGE_INTEGER seekpos;
 548
 549     TRACE("(%p,%p,%p)\n", iface, pIStream, pfMatches);
 550
 551     hr = BitmapDecoderInfo_GetPatterns(iface, 0, NULL, &pattern_count, &patterns_size);
 552     if (FAILED(hr)) return hr;
 553
 554     patterns = HeapAlloc(GetProcessHeap(), 0, patterns_size);
 555     if (!patterns) return E_OUTOFMEMORY;
 556
 557     hr = BitmapDecoderInfo_GetPatterns(iface, patterns_size, patterns, &pattern_count, &patterns_size);
 558     if (FAILED(hr)) goto end;
 559
 560     for (i=0; i<pattern_count; i++)
 561     {
 562         if (datasize < patterns[i].Length)
 563         {
 564             HeapFree(GetProcessHeap(), 0, data);
 565             datasize = patterns[i].Length;
 566             data = HeapAlloc(GetProcessHeap(), 0, patterns[i].Length);
 567             if (!data)
 568             {
 569                 hr = E_OUTOFMEMORY;
 570                 break;
 571             }
 572         }
 573
 574         if (patterns[i].EndOfStream)
 575             seekpos.QuadPart = -patterns[i].Position.QuadPart;
 576         else
 577             seekpos.QuadPart = patterns[i].Position.QuadPart;
 578         hr = IStream_Seek(pIStream, seekpos, patterns[i].EndOfStream ? STREAM_SEEK_END : STREAM_SEEK_SET, NULL);
 579         if (hr == STG_E_INVALIDFUNCTION) continue; /* before start of stream */
 580         if (FAILED(hr)) break;
 581
 582         hr = IStream_Read(pIStream, data, patterns[i].Length, &bytesread);
 583         if (hr == S_FALSE || (hr == S_OK && bytesread != patterns[i].Length)) /* past end of stream */
 584             continue;
 585         if (FAILED(hr)) break;
 586
 587         for (pos=0; pos<patterns[i].Length; pos++)
 588         {
 589             if ((data[pos] & patterns[i].Mask[pos]) != patterns[i].Pattern[pos])
 590                 break;
 591         }
 592         if (pos == patterns[i].Length) /* matches pattern */
 593         {
 594             hr = S_OK;
 595             *pfMatches = TRUE;
 596             break;
 597         }
 598     }
 599
 600     if (i == pattern_count) /* does not match any pattern */
 601     {
 602         hr = S_OK;
 603         *pfMatches = FALSE;
 604     }
 605
 606 end:
 607     HeapFree(GetProcessHeap(), 0, patterns);
 608     HeapFree(GetProcessHeap(), 0, data);
 609
 610     return hr;
 611 }
 612
 613 static HRESULT WINAPI BitmapDecoderInfo_CreateInstance(IWICBitmapDecoderInfo *iface,
 614     IWICBitmapDecoder **ppIBitmapDecoder)
 615 {
 616     BitmapDecoderInfo *This = impl_from_IWICBitmapDecoderInfo(iface);
 617
 618     TRACE("(%p,%p)\n", iface, ppIBitmapDecoder);
 619
 620     return CoCreateInstance(&This->clsid, NULL, CLSCTX_INPROC_SERVER,
 621         &IID_IWICBitmapDecoder, (void**)ppIBitmapDecoder);
 622 }
 623
 624 static const IWICBitmapDecoderInfoVtbl BitmapDecoderInfo_Vtbl = {
 625     BitmapDecoderInfo_QueryInterface,
 626     BitmapDecoderInfo_AddRef,
 627     BitmapDecoderInfo_Release,
 628     BitmapDecoderInfo_GetComponentType,
 629     BitmapDecoderInfo_GetCLSID,
 630     BitmapDecoderInfo_GetSigningStatus,
 631     BitmapDecoderInfo_GetAuthor,
 632     BitmapDecoderInfo_GetVendorGUID,
 633     BitmapDecoderInfo_GetVersion,
 634     BitmapDecoderInfo_GetSpecVersion,
 635     BitmapDecoderInfo_GetFriendlyName,
 636     BitmapDecoderInfo_GetContainerFormat,
 637     BitmapDecoderInfo_GetPixelFormats,
 638     BitmapDecoderInfo_GetColorManagementVersion,
 639     BitmapDecoderInfo_GetDeviceManufacturer,
 640     BitmapDecoderInfo_GetDeviceModels,
 641     BitmapDecoderInfo_GetMimeTypes,
 642     BitmapDecoderInfo_GetFileExtensions,
 643     BitmapDecoderInfo_DoesSupportAnimation,
 644     BitmapDecoderInfo_DoesSupportChromaKey,
 645     BitmapDecoderInfo_DoesSupportLossless,
 646     BitmapDecoderInfo_DoesSupportMultiframe,
 647     BitmapDecoderInfo_MatchesMimeType,
 648     BitmapDecoderInfo_GetPatterns,
 649     BitmapDecoderInfo_MatchesPattern,
 650     BitmapDecoderInfo_CreateInstance
 651 };
 652
 653 static HRESULT BitmapDecoderInfo_Constructor(HKEY classkey, REFCLSID clsid, IWICComponentInfo **ppIInfo)
 654 {
 655     BitmapDecoderInfo *This;
 656
 657     This = HeapAlloc(GetProcessHeap(), 0, sizeof(BitmapDecoderInfo));
 658     if (!This)
 659     {
 660         RegCloseKey(classkey);
 661         return E_OUTOFMEMORY;
 662     }
 663
 664     This->IWICBitmapDecoderInfo_iface.lpVtbl = &BitmapDecoderInfo_Vtbl;
 665     This->ref = 1;
 666     This->classkey = classkey;
 667     memcpy(&This->clsid, clsid, sizeof(CLSID));
 668
 669     *ppIInfo = (IWICComponentInfo*)This;
 670     return S_OK;
 671 }
 672
 673 typedef struct {
 674     IWICBitmapEncoderInfo IWICBitmapEncoderInfo_iface;
 675     LONG ref;
 676     HKEY classkey;
 677     CLSID clsid;
 678 } BitmapEncoderInfo;
 679
 680 static inline BitmapEncoderInfo *impl_from_IWICBitmapEncoderInfo(IWICBitmapEncoderInfo *iface)
 681 {
 682     return CONTAINING_RECORD(iface, BitmapEncoderInfo, IWICBitmapEncoderInfo_iface);
 683 }
 684
 685 static HRESULT WINAPI BitmapEncoderInfo_QueryInterface(IWICBitmapEncoderInfo *iface, REFIID iid,
 686     void **ppv)
 687 {
 688     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 689     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 690
 691     if (!ppv) return E_INVALIDARG;
 692
 693     if (IsEqualIID(&IID_IUnknown, iid) ||
 694         IsEqualIID(&IID_IWICComponentInfo, iid) ||
 695         IsEqualIID(&IID_IWICBitmapCodecInfo, iid) ||
 696         IsEqualIID(&IID_IWICBitmapEncoderInfo ,iid))
 697     {
 698         *ppv = This;
 699     }
 700     else
 701     {
 702         *ppv = NULL;
 703         return E_NOINTERFACE;
 704     }
 705
 706     IUnknown_AddRef((IUnknown*)*ppv);
 707     return S_OK;
 708 }
 709
 710 static ULONG WINAPI BitmapEncoderInfo_AddRef(IWICBitmapEncoderInfo *iface)
 711 {
 712     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 713     ULONG ref = InterlockedIncrement(&This->ref);
 714
 715     TRACE("(%p) refcount=%u\n", iface, ref);
 716
 717     return ref;
 718 }
 719
 720 static ULONG WINAPI BitmapEncoderInfo_Release(IWICBitmapEncoderInfo *iface)
 721 {
 722     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 723     ULONG ref = InterlockedDecrement(&This->ref);
 724
 725     TRACE("(%p) refcount=%u\n", iface, ref);
 726
 727     if (ref == 0)
 728     {
 729         RegCloseKey(This->classkey);
 730         HeapFree(GetProcessHeap(), 0, This);
 731     }
 732
 733     return ref;
 734 }
 735
 736 static HRESULT WINAPI BitmapEncoderInfo_GetComponentType(IWICBitmapEncoderInfo *iface,
 737     WICComponentType *pType)
 738 {
 739     TRACE("(%p,%p)\n", iface, pType);
 740     if (!pType) return E_INVALIDARG;
 741     *pType = WICEncoder;
 742     return S_OK;
 743 }
 744
 745 static HRESULT WINAPI BitmapEncoderInfo_GetCLSID(IWICBitmapEncoderInfo *iface, CLSID *pclsid)
 746 {
 747     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 748     TRACE("(%p,%p)\n", iface, pclsid);
 749
 750     if (!pclsid)
 751         return E_INVALIDARG;
 752
 753     memcpy(pclsid, &This->clsid, sizeof(CLSID));
 754
 755     return S_OK;
 756 }
 757
 758 static HRESULT WINAPI BitmapEncoderInfo_GetSigningStatus(IWICBitmapEncoderInfo *iface, DWORD *pStatus)
 759 {
 760     FIXME("(%p,%p): stub\n", iface, pStatus);
 761     return E_NOTIMPL;
 762 }
 763
 764 static HRESULT WINAPI BitmapEncoderInfo_GetAuthor(IWICBitmapEncoderInfo *iface, UINT cchAuthor,
 765     WCHAR *wzAuthor, UINT *pcchActual)
 766 {
 767     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 768
 769     TRACE("(%p,%u,%p,%p)\n", iface, cchAuthor, wzAuthor, pcchActual);
 770
 771     return ComponentInfo_GetStringValue(This->classkey, author_valuename,
 772         cchAuthor, wzAuthor, pcchActual);
 773 }
 774
 775 static HRESULT WINAPI BitmapEncoderInfo_GetVendorGUID(IWICBitmapEncoderInfo *iface, GUID *pguidVendor)
 776 {
 777     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 778
 779     TRACE("(%p,%p)\n", iface, pguidVendor);
 780
 781     return ComponentInfo_GetGUIDValue(This->classkey, vendor_valuename, pguidVendor);
 782 }
 783
 784 static HRESULT WINAPI BitmapEncoderInfo_GetVersion(IWICBitmapEncoderInfo *iface, UINT cchVersion,
 785     WCHAR *wzVersion, UINT *pcchActual)
 786 {
 787     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 788
 789     TRACE("(%p,%u,%p,%p)\n", iface, cchVersion, wzVersion, pcchActual);
 790
 791     return ComponentInfo_GetStringValue(This->classkey, version_valuename,
 792         cchVersion, wzVersion, pcchActual);
 793 }
 794
 795 static HRESULT WINAPI BitmapEncoderInfo_GetSpecVersion(IWICBitmapEncoderInfo *iface, UINT cchSpecVersion,
 796     WCHAR *wzSpecVersion, UINT *pcchActual)
 797 {
 798     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 799
 800     TRACE("(%p,%u,%p,%p)\n", iface, cchSpecVersion, wzSpecVersion, pcchActual);
 801
 802     return ComponentInfo_GetStringValue(This->classkey, specversion_valuename,
 803         cchSpecVersion, wzSpecVersion, pcchActual);
 804 }
 805
 806 static HRESULT WINAPI BitmapEncoderInfo_GetFriendlyName(IWICBitmapEncoderInfo *iface, UINT cchFriendlyName,
 807     WCHAR *wzFriendlyName, UINT *pcchActual)
 808 {
 809     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 810
 811     TRACE("(%p,%u,%p,%p)\n", iface, cchFriendlyName, wzFriendlyName, pcchActual);
 812
 813     return ComponentInfo_GetStringValue(This->classkey, friendlyname_valuename,
 814         cchFriendlyName, wzFriendlyName, pcchActual);
 815 }
 816
 817 static HRESULT WINAPI BitmapEncoderInfo_GetContainerFormat(IWICBitmapEncoderInfo *iface,
 818     GUID *pguidContainerFormat)
 819 {
 820     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 821     TRACE("(%p,%p)\n", iface, pguidContainerFormat);
 822     return ComponentInfo_GetGUIDValue(This->classkey, containerformat_valuename, pguidContainerFormat);
 823 }
 824
 825 static HRESULT WINAPI BitmapEncoderInfo_GetPixelFormats(IWICBitmapEncoderInfo *iface,
 826     UINT cFormats, GUID *pguidPixelFormats, UINT *pcActual)
 827 {
 828     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 829     TRACE("(%p,%u,%p,%p)\n", iface, cFormats, pguidPixelFormats, pcActual);
 830     return ComponentInfo_GetGuidList(This->classkey, formats_keyname, cFormats, pguidPixelFormats, pcActual);
 831 }
 832
 833 static HRESULT WINAPI BitmapEncoderInfo_GetColorManagementVersion(IWICBitmapEncoderInfo *iface,
 834     UINT cchColorManagementVersion, WCHAR *wzColorManagementVersion, UINT *pcchActual)
 835 {
 836     FIXME("(%p,%u,%p,%p): stub\n", iface, cchColorManagementVersion, wzColorManagementVersion, pcchActual);
 837     return E_NOTIMPL;
 838 }
 839
 840 static HRESULT WINAPI BitmapEncoderInfo_GetDeviceManufacturer(IWICBitmapEncoderInfo *iface,
 841     UINT cchDeviceManufacturer, WCHAR *wzDeviceManufacturer, UINT *pcchActual)
 842 {
 843     FIXME("(%p,%u,%p,%p): stub\n", iface, cchDeviceManufacturer, wzDeviceManufacturer, pcchActual);
 844     return E_NOTIMPL;
 845 }
 846
 847 static HRESULT WINAPI BitmapEncoderInfo_GetDeviceModels(IWICBitmapEncoderInfo *iface,
 848     UINT cchDeviceModels, WCHAR *wzDeviceModels, UINT *pcchActual)
 849 {
 850     FIXME("(%p,%u,%p,%p): stub\n", iface, cchDeviceModels, wzDeviceModels, pcchActual);
 851     return E_NOTIMPL;
 852 }
 853
 854 static HRESULT WINAPI BitmapEncoderInfo_GetMimeTypes(IWICBitmapEncoderInfo *iface,
 855     UINT cchMimeTypes, WCHAR *wzMimeTypes, UINT *pcchActual)
 856 {
 857     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 858
 859     TRACE("(%p,%u,%p,%p)\n", iface, cchMimeTypes, wzMimeTypes, pcchActual);
 860
 861     return ComponentInfo_GetStringValue(This->classkey, mimetypes_valuename,
 862         cchMimeTypes, wzMimeTypes, pcchActual);
 863 }
 864
 865 static HRESULT WINAPI BitmapEncoderInfo_GetFileExtensions(IWICBitmapEncoderInfo *iface,
 866     UINT cchFileExtensions, WCHAR *wzFileExtensions, UINT *pcchActual)
 867 {
 868     FIXME("(%p,%u,%p,%p): stub\n", iface, cchFileExtensions, wzFileExtensions, pcchActual);
 869     return E_NOTIMPL;
 870 }
 871
 872 static HRESULT WINAPI BitmapEncoderInfo_DoesSupportAnimation(IWICBitmapEncoderInfo *iface,
 873     BOOL *pfSupportAnimation)
 874 {
 875     FIXME("(%p,%p): stub\n", iface, pfSupportAnimation);
 876     return E_NOTIMPL;
 877 }
 878
 879 static HRESULT WINAPI BitmapEncoderInfo_DoesSupportChromaKey(IWICBitmapEncoderInfo *iface,
 880     BOOL *pfSupportChromaKey)
 881 {
 882     FIXME("(%p,%p): stub\n", iface, pfSupportChromaKey);
 883     return E_NOTIMPL;
 884 }
 885
 886 static HRESULT WINAPI BitmapEncoderInfo_DoesSupportLossless(IWICBitmapEncoderInfo *iface,
 887     BOOL *pfSupportLossless)
 888 {
 889     FIXME("(%p,%p): stub\n", iface, pfSupportLossless);
 890     return E_NOTIMPL;
 891 }
 892
 893 static HRESULT WINAPI BitmapEncoderInfo_DoesSupportMultiframe(IWICBitmapEncoderInfo *iface,
 894     BOOL *pfSupportMultiframe)
 895 {
 896     FIXME("(%p,%p): stub\n", iface, pfSupportMultiframe);
 897     return E_NOTIMPL;
 898 }
 899
 900 static HRESULT WINAPI BitmapEncoderInfo_MatchesMimeType(IWICBitmapEncoderInfo *iface,
 901     LPCWSTR wzMimeType, BOOL *pfMatches)
 902 {
 903     FIXME("(%p,%s,%p): stub\n", iface, debugstr_w(wzMimeType), pfMatches);
 904     return E_NOTIMPL;
 905 }
 906
 907 static HRESULT WINAPI BitmapEncoderInfo_CreateInstance(IWICBitmapEncoderInfo *iface,
 908     IWICBitmapEncoder **ppIBitmapEncoder)
 909 {
 910     BitmapEncoderInfo *This = impl_from_IWICBitmapEncoderInfo(iface);
 911
 912     TRACE("(%p,%p)\n", iface, ppIBitmapEncoder);
 913
 914     return CoCreateInstance(&This->clsid, NULL, CLSCTX_INPROC_SERVER,
 915         &IID_IWICBitmapEncoder, (void**)ppIBitmapEncoder);
 916 }
 917
 918 static const IWICBitmapEncoderInfoVtbl BitmapEncoderInfo_Vtbl = {
 919     BitmapEncoderInfo_QueryInterface,
 920     BitmapEncoderInfo_AddRef,
 921     BitmapEncoderInfo_Release,
 922     BitmapEncoderInfo_GetComponentType,
 923     BitmapEncoderInfo_GetCLSID,
 924     BitmapEncoderInfo_GetSigningStatus,
 925     BitmapEncoderInfo_GetAuthor,
 926     BitmapEncoderInfo_GetVendorGUID,
 927     BitmapEncoderInfo_GetVersion,
 928     BitmapEncoderInfo_GetSpecVersion,
 929     BitmapEncoderInfo_GetFriendlyName,
 930     BitmapEncoderInfo_GetContainerFormat,
 931     BitmapEncoderInfo_GetPixelFormats,
 932     BitmapEncoderInfo_GetColorManagementVersion,
 933     BitmapEncoderInfo_GetDeviceManufacturer,
 934     BitmapEncoderInfo_GetDeviceModels,
 935     BitmapEncoderInfo_GetMimeTypes,
 936     BitmapEncoderInfo_GetFileExtensions,
 937     BitmapEncoderInfo_DoesSupportAnimation,
 938     BitmapEncoderInfo_DoesSupportChromaKey,
 939     BitmapEncoderInfo_DoesSupportLossless,
 940     BitmapEncoderInfo_DoesSupportMultiframe,
 941     BitmapEncoderInfo_MatchesMimeType,
 942     BitmapEncoderInfo_CreateInstance
 943 };
 944
 945 static HRESULT BitmapEncoderInfo_Constructor(HKEY classkey, REFCLSID clsid, IWICComponentInfo **ppIInfo)
 946 {
 947     BitmapEncoderInfo *This;
 948
 949     This = HeapAlloc(GetProcessHeap(), 0, sizeof(BitmapEncoderInfo));
 950     if (!This)
 951     {
 952         RegCloseKey(classkey);
 953         return E_OUTOFMEMORY;
 954     }
 955
 956     This->IWICBitmapEncoderInfo_iface.lpVtbl = &BitmapEncoderInfo_Vtbl;
 957     This->ref = 1;
 958     This->classkey = classkey;
 959     memcpy(&This->clsid, clsid, sizeof(CLSID));
 960
 961     *ppIInfo = (IWICComponentInfo*)This;
 962     return S_OK;
 963 }
 964
 965 typedef struct {
 966     IWICFormatConverterInfo IWICFormatConverterInfo_iface;
 967     LONG ref;
 968     HKEY classkey;
 969     CLSID clsid;
 970 } FormatConverterInfo;
 971
 972 static inline FormatConverterInfo *impl_from_IWICFormatConverterInfo(IWICFormatConverterInfo *iface)
 973 {
 974     return CONTAINING_RECORD(iface, FormatConverterInfo, IWICFormatConverterInfo_iface);
 975 }
 976
 977 static HRESULT WINAPI FormatConverterInfo_QueryInterface(IWICFormatConverterInfo *iface, REFIID iid,
 978     void **ppv)
 979 {
 980     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
 981     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
 982
 983     if (!ppv) return E_INVALIDARG;
 984
 985     if (IsEqualIID(&IID_IUnknown, iid) ||
 986         IsEqualIID(&IID_IWICComponentInfo, iid) ||
 987         IsEqualIID(&IID_IWICFormatConverterInfo ,iid))
 988     {
 989         *ppv = This;
 990     }
 991     else
 992     {
 993         *ppv = NULL;
 994         return E_NOINTERFACE;
 995     }
 996
 997     IUnknown_AddRef((IUnknown*)*ppv);
 998     return S_OK;
 999 }
1000
1001 static ULONG WINAPI FormatConverterInfo_AddRef(IWICFormatConverterInfo *iface)
1002 {
1003     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1004     ULONG ref = InterlockedIncrement(&This->ref);
1005
1006     TRACE("(%p) refcount=%u\n", iface, ref);
1007
1008     return ref;
1009 }
1010
1011 static ULONG WINAPI FormatConverterInfo_Release(IWICFormatConverterInfo *iface)
1012 {
1013     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1014     ULONG ref = InterlockedDecrement(&This->ref);
1015
1016     TRACE("(%p) refcount=%u\n", iface, ref);
1017
1018     if (ref == 0)
1019     {
1020         RegCloseKey(This->classkey);
1021         HeapFree(GetProcessHeap(), 0, This);
1022     }
1023
1024     return ref;
1025 }
1026
1027 static HRESULT WINAPI FormatConverterInfo_GetComponentType(IWICFormatConverterInfo *iface,
1028     WICComponentType *pType)
1029 {
1030     TRACE("(%p,%p)\n", iface, pType);
1031     if (!pType) return E_INVALIDARG;
1032     *pType = WICPixelFormatConverter;
1033     return S_OK;
1034 }
1035
1036 static HRESULT WINAPI FormatConverterInfo_GetCLSID(IWICFormatConverterInfo *iface, CLSID *pclsid)
1037 {
1038     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1039     TRACE("(%p,%p)\n", iface, pclsid);
1040
1041     if (!pclsid)
1042         return E_INVALIDARG;
1043
1044     memcpy(pclsid, &This->clsid, sizeof(CLSID));
1045
1046     return S_OK;
1047 }
1048
1049 static HRESULT WINAPI FormatConverterInfo_GetSigningStatus(IWICFormatConverterInfo *iface, DWORD *pStatus)
1050 {
1051     FIXME("(%p,%p): stub\n", iface, pStatus);
1052     return E_NOTIMPL;
1053 }
1054
1055 static HRESULT WINAPI FormatConverterInfo_GetAuthor(IWICFormatConverterInfo *iface, UINT cchAuthor,
1056     WCHAR *wzAuthor, UINT *pcchActual)
1057 {
1058     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1059
1060     TRACE("(%p,%u,%p,%p)\n", iface, cchAuthor, wzAuthor, pcchActual);
1061
1062     return ComponentInfo_GetStringValue(This->classkey, author_valuename,
1063         cchAuthor, wzAuthor, pcchActual);
1064 }
1065
1066 static HRESULT WINAPI FormatConverterInfo_GetVendorGUID(IWICFormatConverterInfo *iface, GUID *pguidVendor)
1067 {
1068     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1069
1070     TRACE("(%p,%p)\n", iface, pguidVendor);
1071
1072     return ComponentInfo_GetGUIDValue(This->classkey, vendor_valuename, pguidVendor);
1073 }
1074
1075 static HRESULT WINAPI FormatConverterInfo_GetVersion(IWICFormatConverterInfo *iface, UINT cchVersion,
1076     WCHAR *wzVersion, UINT *pcchActual)
1077 {
1078     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1079
1080     TRACE("(%p,%u,%p,%p)\n", iface, cchVersion, wzVersion, pcchActual);
1081
1082     return ComponentInfo_GetStringValue(This->classkey, version_valuename,
1083         cchVersion, wzVersion, pcchActual);
1084 }
1085
1086 static HRESULT WINAPI FormatConverterInfo_GetSpecVersion(IWICFormatConverterInfo *iface, UINT cchSpecVersion,
1087     WCHAR *wzSpecVersion, UINT *pcchActual)
1088 {
1089     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1090
1091     TRACE("(%p,%u,%p,%p)\n", iface, cchSpecVersion, wzSpecVersion, pcchActual);
1092
1093     return ComponentInfo_GetStringValue(This->classkey, specversion_valuename,
1094         cchSpecVersion, wzSpecVersion, pcchActual);
1095 }
1096
1097 static HRESULT WINAPI FormatConverterInfo_GetFriendlyName(IWICFormatConverterInfo *iface, UINT cchFriendlyName,
1098     WCHAR *wzFriendlyName, UINT *pcchActual)
1099 {
1100     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1101
1102     TRACE("(%p,%u,%p,%p)\n", iface, cchFriendlyName, wzFriendlyName, pcchActual);
1103
1104     return ComponentInfo_GetStringValue(This->classkey, friendlyname_valuename,
1105         cchFriendlyName, wzFriendlyName, pcchActual);
1106 }
1107
1108 static HRESULT WINAPI FormatConverterInfo_GetPixelFormats(IWICFormatConverterInfo *iface,
1109     UINT cFormats, GUID *pguidPixelFormats, UINT *pcActual)
1110 {
1111     FIXME("(%p,%u,%p,%p): stub\n", iface, cFormats, pguidPixelFormats, pcActual);
1112     return E_NOTIMPL;
1113 }
1114
1115 static HRESULT WINAPI FormatConverterInfo_CreateInstance(IWICFormatConverterInfo *iface,
1116     IWICFormatConverter **ppIFormatConverter)
1117 {
1118     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1119
1120     TRACE("(%p,%p)\n", iface, ppIFormatConverter);
1121
1122     return CoCreateInstance(&This->clsid, NULL, CLSCTX_INPROC_SERVER,
1123         &IID_IWICFormatConverter, (void**)ppIFormatConverter);
1124 }
1125
1126 static BOOL ConverterSupportsFormat(IWICFormatConverterInfo *iface, const WCHAR *formatguid)
1127 {
1128     LONG res;
1129     FormatConverterInfo *This = impl_from_IWICFormatConverterInfo(iface);
1130     HKEY formats_key, guid_key;
1131
1132     /* Avoid testing using IWICFormatConverter_GetPixelFormats because that
1133         would be O(n). A registry test should do better. */
1134
1135     res = RegOpenKeyExW(This->classkey, pixelformats_keyname, 0, KEY_READ, &formats_key);
1136     if (res != ERROR_SUCCESS) return FALSE;
1137
1138     res = RegOpenKeyExW(formats_key, formatguid, 0, KEY_READ, &guid_key);
1139     if (res == ERROR_SUCCESS) RegCloseKey(guid_key);
1140
1141     RegCloseKey(formats_key);
1142
1143     return (res == ERROR_SUCCESS);
1144 }
1145
1146 static const IWICFormatConverterInfoVtbl FormatConverterInfo_Vtbl = {
1147     FormatConverterInfo_QueryInterface,
1148     FormatConverterInfo_AddRef,
1149     FormatConverterInfo_Release,
1150     FormatConverterInfo_GetComponentType,
1151     FormatConverterInfo_GetCLSID,
1152     FormatConverterInfo_GetSigningStatus,
1153     FormatConverterInfo_GetAuthor,
1154     FormatConverterInfo_GetVendorGUID,
1155     FormatConverterInfo_GetVersion,
1156     FormatConverterInfo_GetSpecVersion,
1157     FormatConverterInfo_GetFriendlyName,
1158     FormatConverterInfo_GetPixelFormats,
1159     FormatConverterInfo_CreateInstance
1160 };
1161
1162 static HRESULT FormatConverterInfo_Constructor(HKEY classkey, REFCLSID clsid, IWICComponentInfo **ppIInfo)
1163 {
1164     FormatConverterInfo *This;
1165
1166     This = HeapAlloc(GetProcessHeap(), 0, sizeof(FormatConverterInfo));
1167     if (!This)
1168     {
1169         RegCloseKey(classkey);
1170         return E_OUTOFMEMORY;
1171     }
1172
1173     This->IWICFormatConverterInfo_iface.lpVtbl = &FormatConverterInfo_Vtbl;
1174     This->ref = 1;
1175     This->classkey = classkey;
1176     memcpy(&This->clsid, clsid, sizeof(CLSID));
1177
1178     *ppIInfo = (IWICComponentInfo*)This;
1179     return S_OK;
1180 }
1181
1182 typedef struct {
1183     IWICPixelFormatInfo2 IWICPixelFormatInfo2_iface;
1184     LONG ref;
1185     HKEY classkey;
1186     CLSID clsid;
1187 } PixelFormatInfo;
1188
1189 static inline PixelFormatInfo *impl_from_IWICPixelFormatInfo2(IWICPixelFormatInfo2 *iface)
1190 {
1191     return CONTAINING_RECORD(iface, PixelFormatInfo, IWICPixelFormatInfo2_iface);
1192 }
1193
1194 static HRESULT WINAPI PixelFormatInfo_QueryInterface(IWICPixelFormatInfo2 *iface, REFIID iid,
1195     void **ppv)
1196 {
1197     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1198     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1199
1200     if (!ppv) return E_INVALIDARG;
1201
1202     if (IsEqualIID(&IID_IUnknown, iid) ||
1203         IsEqualIID(&IID_IWICComponentInfo, iid) ||
1204         IsEqualIID(&IID_IWICPixelFormatInfo, iid) ||
1205         IsEqualIID(&IID_IWICPixelFormatInfo2 ,iid))
1206     {
1207         *ppv = This;
1208     }
1209     else
1210     {
1211         *ppv = NULL;
1212         return E_NOINTERFACE;
1213     }
1214
1215     IUnknown_AddRef((IUnknown*)*ppv);
1216     return S_OK;
1217 }
1218
1219 static ULONG WINAPI PixelFormatInfo_AddRef(IWICPixelFormatInfo2 *iface)
1220 {
1221     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1222     ULONG ref = InterlockedIncrement(&This->ref);
1223
1224     TRACE("(%p) refcount=%u\n", iface, ref);
1225
1226     return ref;
1227 }
1228
1229 static ULONG WINAPI PixelFormatInfo_Release(IWICPixelFormatInfo2 *iface)
1230 {
1231     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1232     ULONG ref = InterlockedDecrement(&This->ref);
1233
1234     TRACE("(%p) refcount=%u\n", iface, ref);
1235
1236     if (ref == 0)
1237     {
1238         RegCloseKey(This->classkey);
1239         HeapFree(GetProcessHeap(), 0, This);
1240     }
1241
1242     return ref;
1243 }
1244
1245 static HRESULT WINAPI PixelFormatInfo_GetComponentType(IWICPixelFormatInfo2 *iface,
1246     WICComponentType *pType)
1247 {
1248     TRACE("(%p,%p)\n", iface, pType);
1249     if (!pType) return E_INVALIDARG;
1250     *pType = WICPixelFormat;
1251     return S_OK;
1252 }
1253
1254 static HRESULT WINAPI PixelFormatInfo_GetCLSID(IWICPixelFormatInfo2 *iface, CLSID *pclsid)
1255 {
1256     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1257     TRACE("(%p,%p)\n", iface, pclsid);
1258
1259     if (!pclsid)
1260         return E_INVALIDARG;
1261
1262     memcpy(pclsid, &This->clsid, sizeof(CLSID));
1263
1264     return S_OK;
1265 }
1266
1267 static HRESULT WINAPI PixelFormatInfo_GetSigningStatus(IWICPixelFormatInfo2 *iface, DWORD *pStatus)
1268 {
1269     TRACE("(%p,%p)\n", iface, pStatus);
1270
1271     if (!pStatus)
1272         return E_INVALIDARG;
1273
1274     /* Pixel formats don't require code, so they are considered signed. */
1275     *pStatus = WICComponentSigned;
1276
1277     return S_OK;
1278 }
1279
1280 static HRESULT WINAPI PixelFormatInfo_GetAuthor(IWICPixelFormatInfo2 *iface, UINT cchAuthor,
1281     WCHAR *wzAuthor, UINT *pcchActual)
1282 {
1283     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1284
1285     TRACE("(%p,%u,%p,%p)\n", iface, cchAuthor, wzAuthor, pcchActual);
1286
1287     return ComponentInfo_GetStringValue(This->classkey, author_valuename,
1288         cchAuthor, wzAuthor, pcchActual);
1289 }
1290
1291 static HRESULT WINAPI PixelFormatInfo_GetVendorGUID(IWICPixelFormatInfo2 *iface, GUID *pguidVendor)
1292 {
1293     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1294
1295     TRACE("(%p,%p)\n", iface, pguidVendor);
1296
1297     return ComponentInfo_GetGUIDValue(This->classkey, vendor_valuename, pguidVendor);
1298 }
1299
1300 static HRESULT WINAPI PixelFormatInfo_GetVersion(IWICPixelFormatInfo2 *iface, UINT cchVersion,
1301     WCHAR *wzVersion, UINT *pcchActual)
1302 {
1303     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1304
1305     TRACE("(%p,%u,%p,%p)\n", iface, cchVersion, wzVersion, pcchActual);
1306
1307     return ComponentInfo_GetStringValue(This->classkey, version_valuename,
1308         cchVersion, wzVersion, pcchActual);
1309 }
1310
1311 static HRESULT WINAPI PixelFormatInfo_GetSpecVersion(IWICPixelFormatInfo2 *iface, UINT cchSpecVersion,
1312     WCHAR *wzSpecVersion, UINT *pcchActual)
1313 {
1314     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1315
1316     TRACE("(%p,%u,%p,%p)\n", iface, cchSpecVersion, wzSpecVersion, pcchActual);
1317
1318     return ComponentInfo_GetStringValue(This->classkey, specversion_valuename,
1319         cchSpecVersion, wzSpecVersion, pcchActual);
1320 }
1321
1322 static HRESULT WINAPI PixelFormatInfo_GetFriendlyName(IWICPixelFormatInfo2 *iface, UINT cchFriendlyName,
1323     WCHAR *wzFriendlyName, UINT *pcchActual)
1324 {
1325     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1326
1327     TRACE("(%p,%u,%p,%p)\n", iface, cchFriendlyName, wzFriendlyName, pcchActual);
1328
1329     return ComponentInfo_GetStringValue(This->classkey, friendlyname_valuename,
1330         cchFriendlyName, wzFriendlyName, pcchActual);
1331 }
1332
1333 static HRESULT WINAPI PixelFormatInfo_GetFormatGUID(IWICPixelFormatInfo2 *iface,
1334     GUID *pFormat)
1335 {
1336     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1337     TRACE("(%p,%p)\n", iface, pFormat);
1338
1339     if (!pFormat)
1340         return E_INVALIDARG;
1341
1342     *pFormat = This->clsid;
1343
1344     return S_OK;
1345 }
1346
1347 static HRESULT WINAPI PixelFormatInfo_GetColorContext(IWICPixelFormatInfo2 *iface,
1348     IWICColorContext **ppIColorContext)
1349 {
1350     FIXME("(%p,%p): stub\n", iface, ppIColorContext);
1351     return E_NOTIMPL;
1352 }
1353
1354 static HRESULT WINAPI PixelFormatInfo_GetBitsPerPixel(IWICPixelFormatInfo2 *iface,
1355     UINT *puiBitsPerPixel)
1356 {
1357     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1358
1359     TRACE("(%p,%p)\n", iface, puiBitsPerPixel);
1360
1361     return ComponentInfo_GetDWORDValue(This->classkey, bitsperpixel_valuename, puiBitsPerPixel);
1362 }
1363
1364 static HRESULT WINAPI PixelFormatInfo_GetChannelCount(IWICPixelFormatInfo2 *iface,
1365     UINT *puiChannelCount)
1366 {
1367     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1368
1369     TRACE("(%p,%p)\n", iface, puiChannelCount);
1370
1371     return ComponentInfo_GetDWORDValue(This->classkey, channelcount_valuename, puiChannelCount);
1372 }
1373
1374 static HRESULT WINAPI PixelFormatInfo_GetChannelMask(IWICPixelFormatInfo2 *iface,
1375     UINT uiChannelIndex, UINT cbMaskBuffer, BYTE *pbMaskBuffer, UINT *pcbActual)
1376 {
1377     static const WCHAR uintformatW[] = {'%','u',0};
1378     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1379     UINT channel_count;
1380     HRESULT hr;
1381     LONG ret;
1382     WCHAR valuename[11];
1383     DWORD cbData;
1384
1385     TRACE("(%p,%u,%u,%p,%p)\n", iface, uiChannelIndex, cbMaskBuffer, pbMaskBuffer, pcbActual);
1386
1387     if (!pcbActual)
1388         return E_INVALIDARG;
1389
1390     hr = PixelFormatInfo_GetChannelCount(iface, &channel_count);
1391
1392     if (SUCCEEDED(hr) && uiChannelIndex >= channel_count)
1393         hr = E_INVALIDARG;
1394
1395     if (SUCCEEDED(hr))
1396     {
1397         snprintfW(valuename, 11, uintformatW, uiChannelIndex);
1398
1399         cbData = cbMaskBuffer;
1400
1401         ret = RegGetValueW(This->classkey, channelmasks_keyname, valuename, RRF_RT_REG_BINARY, NULL, pbMaskBuffer, &cbData);
1402
1403         if (ret == ERROR_SUCCESS || ret == ERROR_MORE_DATA)
1404             *pcbActual = cbData;
1405
1406         if (ret == ERROR_MORE_DATA)
1407             hr = E_INVALIDARG;
1408         else
1409             hr = HRESULT_FROM_WIN32(ret);
1410     }
1411
1412     return hr;
1413 }
1414
1415 static HRESULT WINAPI PixelFormatInfo_SupportsTransparency(IWICPixelFormatInfo2 *iface,
1416     BOOL *pfSupportsTransparency)
1417 {
1418     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1419
1420     TRACE("(%p,%p)\n", iface, pfSupportsTransparency);
1421
1422     return ComponentInfo_GetDWORDValue(This->classkey, supportstransparency_valuename, (DWORD*)pfSupportsTransparency);
1423 }
1424
1425 static HRESULT WINAPI PixelFormatInfo_GetNumericRepresentation(IWICPixelFormatInfo2 *iface,
1426     WICPixelFormatNumericRepresentation *pNumericRepresentation)
1427 {
1428     PixelFormatInfo *This = impl_from_IWICPixelFormatInfo2(iface);
1429
1430     TRACE("(%p,%p)\n", iface, pNumericRepresentation);
1431
1432     return ComponentInfo_GetDWORDValue(This->classkey, numericrepresentation_valuename, pNumericRepresentation);
1433 }
1434
1435 static const IWICPixelFormatInfo2Vtbl PixelFormatInfo_Vtbl = {
1436     PixelFormatInfo_QueryInterface,
1437     PixelFormatInfo_AddRef,
1438     PixelFormatInfo_Release,
1439     PixelFormatInfo_GetComponentType,
1440     PixelFormatInfo_GetCLSID,
1441     PixelFormatInfo_GetSigningStatus,
1442     PixelFormatInfo_GetAuthor,
1443     PixelFormatInfo_GetVendorGUID,
1444     PixelFormatInfo_GetVersion,
1445     PixelFormatInfo_GetSpecVersion,
1446     PixelFormatInfo_GetFriendlyName,
1447     PixelFormatInfo_GetFormatGUID,
1448     PixelFormatInfo_GetColorContext,
1449     PixelFormatInfo_GetBitsPerPixel,
1450     PixelFormatInfo_GetChannelCount,
1451     PixelFormatInfo_GetChannelMask,
1452     PixelFormatInfo_SupportsTransparency,
1453     PixelFormatInfo_GetNumericRepresentation
1454 };
1455
1456 static HRESULT PixelFormatInfo_Constructor(HKEY classkey, REFCLSID clsid, IWICComponentInfo **ppIInfo)
1457 {
1458     PixelFormatInfo *This;
1459
1460     This = HeapAlloc(GetProcessHeap(), 0, sizeof(PixelFormatInfo));
1461     if (!This)
1462     {
1463         RegCloseKey(classkey);
1464         return E_OUTOFMEMORY;
1465     }
1466
1467     This->IWICPixelFormatInfo2_iface.lpVtbl = &PixelFormatInfo_Vtbl;
1468     This->ref = 1;
1469     This->classkey = classkey;
1470     memcpy(&This->clsid, clsid, sizeof(CLSID));
1471
1472     *ppIInfo = (IWICComponentInfo*)This;
1473     return S_OK;
1474 }
1475
1476 typedef struct
1477 {
1478     IWICMetadataReaderInfo IWICMetadataReaderInfo_iface;
1479     LONG ref;
1480     HKEY classkey;
1481     CLSID clsid;
1482 } MetadataReaderInfo;
1483
1484 static inline MetadataReaderInfo *impl_from_IWICMetadataReaderInfo(IWICMetadataReaderInfo *iface)
1485 {
1486     return CONTAINING_RECORD(iface, MetadataReaderInfo, IWICMetadataReaderInfo_iface);
1487 }
1488
1489 static HRESULT WINAPI MetadataReaderInfo_QueryInterface(IWICMetadataReaderInfo *iface,
1490     REFIID riid, void **ppv)
1491 {
1492     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1493
1494     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(riid), ppv);
1495
1496     if (!ppv) return E_INVALIDARG;
1497
1498     if (IsEqualIID(&IID_IUnknown, riid) ||
1499         IsEqualIID(&IID_IWICComponentInfo, riid) ||
1500         IsEqualIID(&IID_IWICMetadataHandlerInfo, riid) ||
1501         IsEqualIID(&IID_IWICMetadataReaderInfo, riid))
1502     {
1503         *ppv = This;
1504     }
1505     else
1506     {
1507         *ppv = NULL;
1508         return E_NOINTERFACE;
1509     }
1510
1511     IUnknown_AddRef((IUnknown *)*ppv);
1512     return S_OK;
1513 }
1514
1515 static ULONG WINAPI MetadataReaderInfo_AddRef(IWICMetadataReaderInfo *iface)
1516 {
1517     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1518     ULONG ref = InterlockedIncrement(&This->ref);
1519
1520     TRACE("(%p) refcount=%u\n", iface, ref);
1521     return ref;
1522 }
1523
1524 static ULONG WINAPI MetadataReaderInfo_Release(IWICMetadataReaderInfo *iface)
1525 {
1526     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1527     ULONG ref = InterlockedDecrement(&This->ref);
1528
1529     TRACE("(%p) refcount=%u\n", iface, ref);
1530
1531     if (!ref)
1532     {
1533         RegCloseKey(This->classkey);
1534         HeapFree(GetProcessHeap(), 0, This);
1535     }
1536     return ref;
1537 }
1538
1539 static HRESULT WINAPI MetadataReaderInfo_GetComponentType(IWICMetadataReaderInfo *iface,
1540     WICComponentType *type)
1541 {
1542     TRACE("(%p,%p)\n", iface, type);
1543
1544     if (!type) return E_INVALIDARG;
1545     *type = WICMetadataReader;
1546     return S_OK;
1547 }
1548
1549 static HRESULT WINAPI MetadataReaderInfo_GetCLSID(IWICMetadataReaderInfo *iface,
1550     CLSID *clsid)
1551 {
1552     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1553
1554     TRACE("(%p,%p)\n", iface, clsid);
1555
1556     if (!clsid) return E_INVALIDARG;
1557     *clsid = This->clsid;
1558     return S_OK;
1559 }
1560
1561 static HRESULT WINAPI MetadataReaderInfo_GetSigningStatus(IWICMetadataReaderInfo *iface,
1562     DWORD *status)
1563 {
1564     FIXME("(%p,%p): stub\n", iface, status);
1565     return E_NOTIMPL;
1566 }
1567
1568 static HRESULT WINAPI MetadataReaderInfo_GetAuthor(IWICMetadataReaderInfo *iface,
1569     UINT length, WCHAR *author, UINT *actual_length)
1570 {
1571     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1572
1573     TRACE("(%p,%u,%p,%p)\n", iface, length, author, actual_length);
1574
1575     return ComponentInfo_GetStringValue(This->classkey, author_valuename,
1576                                         length, author, actual_length);
1577 }
1578
1579 static HRESULT WINAPI MetadataReaderInfo_GetVendorGUID(IWICMetadataReaderInfo *iface,
1580     GUID *vendor)
1581 {
1582     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1583
1584     TRACE("(%p,%p)\n", iface, vendor);
1585
1586     return ComponentInfo_GetGUIDValue(This->classkey, vendor_valuename, vendor);
1587 }
1588
1589 static HRESULT WINAPI MetadataReaderInfo_GetVersion(IWICMetadataReaderInfo *iface,
1590     UINT length, WCHAR *version, UINT *actual_length)
1591 {
1592     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1593
1594     TRACE("(%p,%u,%p,%p)\n", iface, length, version, actual_length);
1595
1596     return ComponentInfo_GetStringValue(This->classkey, version_valuename,
1597                                         length, version, actual_length);
1598 }
1599
1600 static HRESULT WINAPI MetadataReaderInfo_GetSpecVersion(IWICMetadataReaderInfo *iface,
1601     UINT length, WCHAR *version, UINT *actual_length)
1602 {
1603     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1604
1605     TRACE("(%p,%u,%p,%p)\n", iface, length, version, actual_length);
1606
1607     return ComponentInfo_GetStringValue(This->classkey, specversion_valuename,
1608                                         length, version, actual_length);
1609 }
1610
1611 static HRESULT WINAPI MetadataReaderInfo_GetFriendlyName(IWICMetadataReaderInfo *iface,
1612     UINT length, WCHAR *name, UINT *actual_length)
1613 {
1614     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1615
1616     TRACE("(%p,%u,%p,%p)\n", iface, length, name, actual_length);
1617
1618     return ComponentInfo_GetStringValue(This->classkey, friendlyname_valuename,
1619                                         length, name, actual_length);
1620 }
1621
1622 static HRESULT WINAPI MetadataReaderInfo_GetMetadataFormat(IWICMetadataReaderInfo *iface,
1623     GUID *format)
1624 {
1625     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1626     TRACE("(%p,%p)\n", iface, format);
1627     return ComponentInfo_GetGUIDValue(This->classkey, metadataformat_valuename, format);
1628 }
1629
1630 static HRESULT WINAPI MetadataReaderInfo_GetContainerFormats(IWICMetadataReaderInfo *iface,
1631     UINT length, GUID *formats, UINT *actual_length)
1632 {
1633     if (!actual_length) return E_INVALIDARG;
1634
1635     FIXME("(%p,%u,%p,%p): stub\n", iface, length, formats, actual_length);
1636     return E_NOTIMPL;
1637 }
1638
1639 static HRESULT WINAPI MetadataReaderInfo_GetDeviceManufacturer(IWICMetadataReaderInfo *iface,
1640     UINT length, WCHAR *manufacturer, UINT *actual_length)
1641 {
1642     FIXME("(%p,%u,%p,%p): stub\n", iface, length, manufacturer, actual_length);
1643     return E_NOTIMPL;
1644 }
1645
1646 static HRESULT WINAPI MetadataReaderInfo_GetDeviceModels(IWICMetadataReaderInfo *iface,
1647     UINT length, WCHAR *models, UINT *actual_length)
1648 {
1649     FIXME("(%p,%u,%p,%p): stub\n", iface, length, models, actual_length);
1650     return E_NOTIMPL;
1651 }
1652
1653 static HRESULT WINAPI MetadataReaderInfo_DoesRequireFullStream(IWICMetadataReaderInfo *iface,
1654     BOOL *param)
1655 {
1656     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1657     TRACE("(%p,%p)\n", iface, param);
1658     return ComponentInfo_GetDWORDValue(This->classkey, requiresfullstream_valuename, (DWORD *)param);
1659 }
1660
1661 static HRESULT WINAPI MetadataReaderInfo_DoesSupportPadding(IWICMetadataReaderInfo *iface,
1662     BOOL *param)
1663 {
1664     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1665     TRACE("(%p,%p)\n", iface, param);
1666     return ComponentInfo_GetDWORDValue(This->classkey, supportspadding_valuename, (DWORD *)param);
1667 }
1668
1669 static HRESULT WINAPI MetadataReaderInfo_DoesRequireFixedSize(IWICMetadataReaderInfo *iface,
1670     BOOL *param)
1671 {
1672     FIXME("(%p,%p): stub\n", iface, param);
1673     return E_NOTIMPL;
1674 }
1675
1676 static HRESULT WINAPI MetadataReaderInfo_GetPatterns(IWICMetadataReaderInfo *iface,
1677     REFGUID container, UINT length, WICMetadataPattern *pattern, UINT *count, UINT *actual_length)
1678 {
1679     if (!actual_length) return E_INVALIDARG;
1680
1681     FIXME("(%p,%s,%u,%p,%p,%p): stub\n", iface, debugstr_guid(container), length, pattern, count, actual_length);
1682     return E_NOTIMPL;
1683 }
1684
1685 static HRESULT WINAPI MetadataReaderInfo_MatchesPattern(IWICMetadataReaderInfo *iface,
1686     REFGUID container, IStream *stream, BOOL *matches)
1687 {
1688     FIXME("(%p,%s,%p,%p): stub\n", iface, debugstr_guid(container), stream, matches);
1689     return E_NOTIMPL;
1690 }
1691
1692 static HRESULT WINAPI MetadataReaderInfo_CreateInstance(IWICMetadataReaderInfo *iface,
1693     IWICMetadataReader **reader)
1694 {
1695     MetadataReaderInfo *This = impl_from_IWICMetadataReaderInfo(iface);
1696
1697     TRACE("(%p,%p)\n", iface, reader);
1698
1699     return CoCreateInstance(&This->clsid, NULL, CLSCTX_INPROC_SERVER,
1700                             &IID_IWICMetadataReader, (void **)reader);
1701 }
1702
1703 static const IWICMetadataReaderInfoVtbl MetadataReaderInfo_Vtbl = {
1704     MetadataReaderInfo_QueryInterface,
1705     MetadataReaderInfo_AddRef,
1706     MetadataReaderInfo_Release,
1707     MetadataReaderInfo_GetComponentType,
1708     MetadataReaderInfo_GetCLSID,
1709     MetadataReaderInfo_GetSigningStatus,
1710     MetadataReaderInfo_GetAuthor,
1711     MetadataReaderInfo_GetVendorGUID,
1712     MetadataReaderInfo_GetVersion,
1713     MetadataReaderInfo_GetSpecVersion,
1714     MetadataReaderInfo_GetFriendlyName,
1715     MetadataReaderInfo_GetMetadataFormat,
1716     MetadataReaderInfo_GetContainerFormats,
1717     MetadataReaderInfo_GetDeviceManufacturer,
1718     MetadataReaderInfo_GetDeviceModels,
1719     MetadataReaderInfo_DoesRequireFullStream,
1720     MetadataReaderInfo_DoesSupportPadding,
1721     MetadataReaderInfo_DoesRequireFixedSize,
1722     MetadataReaderInfo_GetPatterns,
1723     MetadataReaderInfo_MatchesPattern,
1724     MetadataReaderInfo_CreateInstance
1725 };
1726
1727 static HRESULT MetadataReaderInfo_Constructor(HKEY classkey, REFCLSID clsid, IWICComponentInfo **info)
1728 {
1729     MetadataReaderInfo *This;
1730
1731     This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1732     if (!This)
1733     {
1734         RegCloseKey(classkey);
1735         return E_OUTOFMEMORY;
1736     }
1737
1738     This->IWICMetadataReaderInfo_iface.lpVtbl = &MetadataReaderInfo_Vtbl;
1739     This->ref = 1;
1740     This->classkey = classkey;
1741     This->clsid = *clsid;
1742
1743     *info = (IWICComponentInfo *)This;
1744     return S_OK;
1745 }
1746
1747 static const WCHAR clsid_keyname[] = {'C','L','S','I','D',0};
1748 static const WCHAR instance_keyname[] = {'I','n','s','t','a','n','c','e',0};
1749
1750 struct category {
1751     WICComponentType type;
1752     const GUID *catid;
1753     HRESULT (*constructor)(HKEY,REFCLSID,IWICComponentInfo**);
1754 };
1755
1756 static const struct category categories[] = {
1757     {WICDecoder, &CATID_WICBitmapDecoders, BitmapDecoderInfo_Constructor},
1758     {WICEncoder, &CATID_WICBitmapEncoders, BitmapEncoderInfo_Constructor},
1759     {WICPixelFormatConverter, &CATID_WICFormatConverters, FormatConverterInfo_Constructor},
1760     {WICPixelFormat, &CATID_WICPixelFormats, PixelFormatInfo_Constructor},
1761     {WICMetadataReader, &CATID_WICMetadataReader, MetadataReaderInfo_Constructor},
1762     {0}
1763 };
1764
1765 HRESULT CreateComponentInfo(REFCLSID clsid, IWICComponentInfo **ppIInfo)
1766 {
1767     HKEY clsidkey;
1768     HKEY classkey;
1769     HKEY catidkey;
1770     HKEY instancekey;
1771     WCHAR guidstring[39];
1772     LONG res;
1773     const struct category *category;
1774     BOOL found = FALSE;
1775     HRESULT hr;
1776
1777     res = RegOpenKeyExW(HKEY_CLASSES_ROOT, clsid_keyname, 0, KEY_READ, &clsidkey);
1778     if (res != ERROR_SUCCESS)
1779         return HRESULT_FROM_WIN32(res);
1780
1781     for (category=categories; category->type; category++)
1782     {
1783         StringFromGUID2(category->catid, guidstring, 39);
1784         res = RegOpenKeyExW(clsidkey, guidstring, 0, KEY_READ, &catidkey);
1785         if (res == ERROR_SUCCESS)
1786         {
1787             res = RegOpenKeyExW(catidkey, instance_keyname, 0, KEY_READ, &instancekey);
1788             if (res == ERROR_SUCCESS)
1789             {
1790                 StringFromGUID2(clsid, guidstring, 39);
1791                 res = RegOpenKeyExW(instancekey, guidstring, 0, KEY_READ, &classkey);
1792                 if (res == ERROR_SUCCESS)
1793                 {
1794                     RegCloseKey(classkey);
1795                     found = TRUE;
1796                 }
1797                 RegCloseKey(instancekey);
1798             }
1799             RegCloseKey(catidkey);
1800         }
1801         if (found) break;
1802     }
1803
1804     if (found)
1805     {
1806         res = RegOpenKeyExW(clsidkey, guidstring, 0, KEY_READ, &classkey);
1807         if (res == ERROR_SUCCESS)
1808             hr = category->constructor(classkey, clsid, ppIInfo);
1809         else
1810             hr = HRESULT_FROM_WIN32(res);
1811     }
1812     else
1813     {
1814         FIXME("%s is not supported\n", wine_dbgstr_guid(clsid));
1815         hr = E_FAIL;
1816     }
1817
1818     RegCloseKey(clsidkey);
1819
1820     return hr;
1821 }
1822
1823 typedef struct {
1824     IEnumUnknown IEnumUnknown_iface;
1825     LONG ref;
1826     struct list objects;
1827     struct list *cursor;
1828     CRITICAL_SECTION lock; /* Must be held when reading or writing cursor */
1829 } ComponentEnum;
1830
1831 static inline ComponentEnum *impl_from_IEnumUnknown(IEnumUnknown *iface)
1832 {
1833     return CONTAINING_RECORD(iface, ComponentEnum, IEnumUnknown_iface);
1834 }
1835
1836 typedef struct {
1837     struct list entry;
1838     IUnknown *unk;
1839 } ComponentEnumItem;
1840
1841 static const IEnumUnknownVtbl ComponentEnumVtbl;
1842
1843 static HRESULT WINAPI ComponentEnum_QueryInterface(IEnumUnknown *iface, REFIID iid,
1844     void **ppv)
1845 {
1846     ComponentEnum *This = impl_from_IEnumUnknown(iface);
1847     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
1848
1849     if (!ppv) return E_INVALIDARG;
1850
1851     if (IsEqualIID(&IID_IUnknown, iid) ||
1852         IsEqualIID(&IID_IEnumUnknown, iid))
1853     {
1854         *ppv = &This->IEnumUnknown_iface;
1855     }
1856     else
1857     {
1858         *ppv = NULL;
1859         return E_NOINTERFACE;
1860     }
1861
1862     IUnknown_AddRef((IUnknown*)*ppv);
1863     return S_OK;
1864 }
1865
1866 static ULONG WINAPI ComponentEnum_AddRef(IEnumUnknown *iface)
1867 {
1868     ComponentEnum *This = impl_from_IEnumUnknown(iface);
1869     ULONG ref = InterlockedIncrement(&This->ref);
1870
1871     TRACE("(%p) refcount=%u\n", iface, ref);
1872
1873     return ref;
1874 }
1875
1876 static ULONG WINAPI ComponentEnum_Release(IEnumUnknown *iface)
1877 {
1878     ComponentEnum *This = impl_from_IEnumUnknown(iface);
1879     ULONG ref = InterlockedDecrement(&This->ref);
1880     ComponentEnumItem *cursor, *cursor2;
1881
1882     TRACE("(%p) refcount=%u\n", iface, ref);
1883
1884     if (ref == 0)
1885     {
1886         LIST_FOR_EACH_ENTRY_SAFE(cursor, cursor2, &This->objects, ComponentEnumItem, entry)
1887         {
1888             IUnknown_Release(cursor->unk);
1889             list_remove(&cursor->entry);
1890             HeapFree(GetProcessHeap(), 0, cursor);
1891         }
1892         This->lock.DebugInfo->Spare[0] = 0;
1893         DeleteCriticalSection(&This->lock);
1894         HeapFree(GetProcessHeap(), 0, This);
1895     }
1896
1897     return ref;
1898 }
1899
1900 static HRESULT WINAPI ComponentEnum_Next(IEnumUnknown *iface, ULONG celt,
1901     IUnknown **rgelt, ULONG *pceltFetched)
1902 {
1903     ComponentEnum *This = impl_from_IEnumUnknown(iface);
1904     ULONG num_fetched=0;
1905     ComponentEnumItem *item;
1906     HRESULT hr=S_OK;
1907
1908     TRACE("(%p,%u,%p,%p)\n", iface, celt, rgelt, pceltFetched);
1909
1910     EnterCriticalSection(&This->lock);
1911     while (num_fetched<celt)
1912     {
1913         if (!This->cursor)
1914         {
1915             hr = S_FALSE;
1916             break;
1917         }
1918         item = LIST_ENTRY(This->cursor, ComponentEnumItem, entry);
1919         IUnknown_AddRef(item->unk);
1920         rgelt[num_fetched] = item->unk;
1921         num_fetched++;
1922         This->cursor = list_next(&This->objects, This->cursor);
1923     }
1924     LeaveCriticalSection(&This->lock);
1925     if (pceltFetched)
1926         *pceltFetched = num_fetched;
1927     return hr;
1928 }
1929
1930 static HRESULT WINAPI ComponentEnum_Skip(IEnumUnknown *iface, ULONG celt)
1931 {
1932     ComponentEnum *This = impl_from_IEnumUnknown(iface);
1933     ULONG i;
1934     HRESULT hr=S_OK;
1935
1936     TRACE("(%p,%u)\n", iface, celt);
1937
1938     EnterCriticalSection(&This->lock);
1939     for (i=0; i<celt; i++)
1940     {
1941         if (!This->cursor)
1942         {
1943             hr = S_FALSE;
1944             break;
1945         }
1946         This->cursor = list_next(&This->objects, This->cursor);
1947     }
1948     LeaveCriticalSection(&This->lock);
1949     return hr;
1950 }
1951
1952 static HRESULT WINAPI ComponentEnum_Reset(IEnumUnknown *iface)
1953 {
1954     ComponentEnum *This = impl_from_IEnumUnknown(iface);
1955
1956     TRACE("(%p)\n", iface);
1957
1958     EnterCriticalSection(&This->lock);
1959     This->cursor = list_head(&This->objects);
1960     LeaveCriticalSection(&This->lock);
1961     return S_OK;
1962 }
1963
1964 static HRESULT WINAPI ComponentEnum_Clone(IEnumUnknown *iface, IEnumUnknown **ppenum)
1965 {
1966     ComponentEnum *This = impl_from_IEnumUnknown(iface);
1967     ComponentEnum *new_enum;
1968     ComponentEnumItem *old_item, *new_item;
1969     HRESULT ret=S_OK;
1970     struct list *old_cursor;
1971
1972     new_enum = HeapAlloc(GetProcessHeap(), 0, sizeof(ComponentEnum));
1973     if (!new_enum)
1974     {
1975         *ppenum = NULL;
1976         return E_OUTOFMEMORY;
1977     }
1978
1979     new_enum->IEnumUnknown_iface.lpVtbl = &ComponentEnumVtbl;
1980     new_enum->ref = 1;
1981     new_enum->cursor = NULL;
1982     list_init(&new_enum->objects);
1983     InitializeCriticalSection(&new_enum->lock);
1984     new_enum->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ComponentEnum.lock");
1985
1986     EnterCriticalSection(&This->lock);
1987     old_cursor = This->cursor;
1988     LeaveCriticalSection(&This->lock);
1989
1990     LIST_FOR_EACH_ENTRY(old_item, &This->objects, ComponentEnumItem, entry)
1991     {
1992         new_item = HeapAlloc(GetProcessHeap(), 0, sizeof(ComponentEnumItem));
1993         if (!new_item)
1994         {
1995             ret = E_OUTOFMEMORY;
1996             break;
1997         }
1998         new_item->unk = old_item->unk;
1999         list_add_tail(&new_enum->objects, &new_item->entry);
2000         IUnknown_AddRef(new_item->unk);
2001         if (&old_item->entry == old_cursor) new_enum->cursor = &new_item->entry;
2002     }
2003
2004     if (FAILED(ret))
2005     {
2006         IEnumUnknown_Release(&new_enum->IEnumUnknown_iface);
2007         *ppenum = NULL;
2008     }
2009     else
2010         *ppenum = &new_enum->IEnumUnknown_iface;
2011
2012     return ret;
2013 }
2014
2015 static const IEnumUnknownVtbl ComponentEnumVtbl = {
2016     ComponentEnum_QueryInterface,
2017     ComponentEnum_AddRef,
2018     ComponentEnum_Release,
2019     ComponentEnum_Next,
2020     ComponentEnum_Skip,
2021     ComponentEnum_Reset,
2022     ComponentEnum_Clone
2023 };
2024
2025 HRESULT CreateComponentEnumerator(DWORD componentTypes, DWORD options, IEnumUnknown **ppIEnumUnknown)
2026 {
2027     ComponentEnum *This;
2028     ComponentEnumItem *item;
2029     const struct category *category;
2030     HKEY clsidkey, catidkey, instancekey;
2031     WCHAR guidstring[39];
2032     LONG res;
2033     int i;
2034     HRESULT hr=S_OK;
2035     CLSID clsid;
2036
2037     if (options) FIXME("ignoring flags %x\n", options);
2038
2039     res = RegOpenKeyExW(HKEY_CLASSES_ROOT, clsid_keyname, 0, KEY_READ, &clsidkey);
2040     if (res != ERROR_SUCCESS)
2041         return HRESULT_FROM_WIN32(res);
2042
2043     This = HeapAlloc(GetProcessHeap(), 0, sizeof(ComponentEnum));
2044     if (!This)
2045     {
2046         RegCloseKey(clsidkey);
2047         return E_OUTOFMEMORY;
2048     }
2049
2050     This->IEnumUnknown_iface.lpVtbl = &ComponentEnumVtbl;
2051     This->ref = 1;
2052     list_init(&This->objects);
2053     InitializeCriticalSection(&This->lock);
2054     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ComponentEnum.lock");
2055
2056     for (category=categories; category->type && hr == S_OK; category++)
2057     {
2058         if ((category->type & componentTypes) == 0) continue;
2059         StringFromGUID2(category->catid, guidstring, 39);
2060         res = RegOpenKeyExW(clsidkey, guidstring, 0, KEY_READ, &catidkey);
2061         if (res == ERROR_SUCCESS)
2062         {
2063             res = RegOpenKeyExW(catidkey, instance_keyname, 0, KEY_READ, &instancekey);
2064             if (res == ERROR_SUCCESS)
2065             {
2066                 i=0;
2067                 for (;;i++)
2068                 {
2069                     DWORD guidstring_size = 39;
2070                     res = RegEnumKeyExW(instancekey, i, guidstring, &guidstring_size, NULL, NULL, NULL, NULL);
2071                     if (res != ERROR_SUCCESS) break;
2072
2073                     item = HeapAlloc(GetProcessHeap(), 0, sizeof(ComponentEnumItem));
2074                     if (!item) { hr = E_OUTOFMEMORY; break; }
2075
2076                     hr = CLSIDFromString(guidstring, &clsid);
2077                     if (SUCCEEDED(hr))
2078                     {
2079                         hr = CreateComponentInfo(&clsid, (IWICComponentInfo**)&item->unk);
2080                         if (SUCCEEDED(hr))
2081                             list_add_tail(&This->objects, &item->entry);
2082                     }
2083
2084                     if (FAILED(hr))
2085                     {
2086                         HeapFree(GetProcessHeap(), 0, item);
2087                         hr = S_OK;
2088                     }
2089                 }
2090                 RegCloseKey(instancekey);
2091             }
2092             RegCloseKey(catidkey);
2093         }
2094         if (res != ERROR_SUCCESS && res != ERROR_NO_MORE_ITEMS)
2095             hr = HRESULT_FROM_WIN32(res);
2096     }
2097     RegCloseKey(clsidkey);
2098
2099     if (SUCCEEDED(hr))
2100     {
2101         IEnumUnknown_Reset(&This->IEnumUnknown_iface);
2102         *ppIEnumUnknown = &This->IEnumUnknown_iface;
2103     }
2104     else
2105     {
2106         *ppIEnumUnknown = NULL;
2107         IEnumUnknown_Release(&This->IEnumUnknown_iface);
2108     }
2109
2110     return hr;
2111 }
2112
2113 HRESULT WINAPI WICConvertBitmapSource(REFWICPixelFormatGUID dstFormat, IWICBitmapSource *pISrc, IWICBitmapSource **ppIDst)
2114 {
2115     HRESULT res;
2116     IEnumUnknown *enumconverters;
2117     IUnknown *unkconverterinfo;
2118     IWICFormatConverterInfo *converterinfo=NULL;
2119     IWICFormatConverter *converter=NULL;
2120     GUID srcFormat;
2121     WCHAR srcformatstr[39], dstformatstr[39];
2122     BOOL canconvert;
2123     ULONG num_fetched;
2124
2125     res = IWICBitmapSource_GetPixelFormat(pISrc, &srcFormat);
2126     if (FAILED(res)) return res;
2127
2128     if (IsEqualGUID(&srcFormat, dstFormat))
2129     {
2130         IWICBitmapSource_AddRef(pISrc);
2131         *ppIDst = pISrc;
2132         return S_OK;
2133     }
2134
2135     StringFromGUID2(&srcFormat, srcformatstr, 39);
2136     StringFromGUID2(dstFormat, dstformatstr, 39);
2137
2138     res = CreateComponentEnumerator(WICPixelFormatConverter, 0, &enumconverters);
2139     if (FAILED(res)) return res;
2140
2141     while (!converter)
2142     {
2143         res = IEnumUnknown_Next(enumconverters, 1, &unkconverterinfo, &num_fetched);
2144
2145         if (res == S_OK)
2146         {
2147             res = IUnknown_QueryInterface(unkconverterinfo, &IID_IWICFormatConverterInfo, (void**)&converterinfo);
2148
2149             if (SUCCEEDED(res))
2150             {
2151                 canconvert = ConverterSupportsFormat(converterinfo, srcformatstr);
2152
2153                 if (canconvert)
2154                     canconvert = ConverterSupportsFormat(converterinfo, dstformatstr);
2155
2156                 if (canconvert)
2157                 {
2158                     res = IWICFormatConverterInfo_CreateInstance(converterinfo, &converter);
2159
2160                     if (SUCCEEDED(res))
2161                         res = IWICFormatConverter_CanConvert(converter, &srcFormat, dstFormat, &canconvert);
2162
2163                     if (SUCCEEDED(res) && canconvert)
2164                         res = IWICFormatConverter_Initialize(converter, pISrc, dstFormat, WICBitmapDitherTypeNone,
2165                             NULL, 0.0, WICBitmapPaletteTypeCustom);
2166
2167                     if (FAILED(res) || !canconvert)
2168                     {
2169                         if (converter)
2170                         {
2171                             IWICFormatConverter_Release(converter);
2172                             converter = NULL;
2173                         }
2174                         res = S_OK;
2175                     }
2176                 }
2177
2178                 IWICFormatConverterInfo_Release(converterinfo);
2179             }
2180
2181             IUnknown_Release(unkconverterinfo);
2182         }
2183         else
2184             break;
2185     }
2186
2187     IEnumUnknown_Release(enumconverters);
2188
2189     if (converter)
2190     {
2191         res = IWICFormatConverter_QueryInterface(converter, &IID_IWICBitmapSource, (void **)ppIDst);
2192         IWICFormatConverter_Release(converter);
2193         return res;
2194     }
2195     else
2196     {
2197         FIXME("cannot convert %s to %s\n", debugstr_guid(&srcFormat), debugstr_guid(dstFormat));
2198         *ppIDst = NULL;
2199         return WINCODEC_ERR_COMPONENTNOTFOUND;
2200     }
2201 }