git.oblomov.eu Git - wine/blob - dlls/quartz/main.c

   1 /*
   2  * Exported APIs.
   3  *
   4  * Copyright (C) Hidenori TAKESHIMA <hidenori@a2.ctktv.ne.jp>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include "windef.h"
  24 #include "winerror.h"
  25 #include "winbase.h"
  26 #include "wingdi.h"
  27 #include "winuser.h"
  28 #include "winnls.h"
  29 #include "mmsystem.h"
  30 #include "ole2.h"
  31 #include "strmif.h"
  32 #include "control.h"
  33 #include "uuids.h"
  34 #include "errors.h"
  35
  36 #include "wine/debug.h"
  37 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  38
  39 #include "initguid.h"
  40
  41 #include "quartz_private.h"
  42 #include "fgraph.h"
  43 #include "sysclock.h"
  44 #include "memalloc.h"
  45 #include "devenum.h"
  46 #include "fmap.h"
  47 #include "seekpass.h"
  48 #include "audren.h"
  49 #include "vidren.h"
  50 #include "parser.h"
  51 #include "asyncsrc.h"
  52 #include "xform.h"
  53 #include "capgraph.h"
  54 #include "filesink.h"
  55
  56
  57 typedef struct QUARTZ_CLASSENTRY
  58 {
  59         const CLSID*    pclsid;
  60         QUARTZ_pCreateIUnknown  pCreateIUnk;
  61 } QUARTZ_CLASSENTRY;
  62
  63
  64 static HRESULT WINAPI
  65 IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj);
  66 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface);
  67 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface);
  68 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj);
  69 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock);
  70
  71 static ICOM_VTABLE(IClassFactory) iclassfact =
  72 {
  73         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
  74         IClassFactory_fnQueryInterface,
  75         IClassFactory_fnAddRef,
  76         IClassFactory_fnRelease,
  77         IClassFactory_fnCreateInstance,
  78         IClassFactory_fnLockServer
  79 };
  80
  81 typedef struct
  82 {
  83         /* IUnknown fields */
  84         ICOM_VFIELD(IClassFactory);
  85         LONG    ref;
  86         /* IClassFactory fields */
  87         const QUARTZ_CLASSENTRY* pEntry;
  88 } IClassFactoryImpl;
  89
  90 static const QUARTZ_CLASSENTRY QUARTZ_ClassList[] =
  91 {
  92         { &CLSID_FilterGraph, &QUARTZ_CreateFilterGraph },
  93         { &CLSID_FilterGraphNoThread, &QUARTZ_CreateFilterGraph }, /* FIXME? */
  94         { &CLSID_SystemClock, &QUARTZ_CreateSystemClock },
  95         { &CLSID_MemoryAllocator, &QUARTZ_CreateMemoryAllocator },
  96         { &CLSID_SystemDeviceEnum, &QUARTZ_CreateSystemDeviceEnum },
  97         { &CLSID_FilterMapper, &QUARTZ_CreateFilterMapper },
  98         { &CLSID_FilterMapper2, &QUARTZ_CreateFilterMapper2 },
  99         { &CLSID_SeekingPassThru, &QUARTZ_CreateSeekingPassThru },
 100         { &CLSID_CaptureGraphBuilder, &QUARTZ_CreateCaptureGraph },
 101         { &CLSID_CaptureGraphBuilder2, &QUARTZ_CreateCaptureGraph },
 102
 103         { &CLSID_AudioRender, &QUARTZ_CreateAudioRenderer },
 104         { &CLSID_VideoRenderer, &QUARTZ_CreateVideoRenderer },
 105         { &CLSID_quartzWaveParser, &QUARTZ_CreateWaveParser },
 106         { &CLSID_AviSplitter, &QUARTZ_CreateAVISplitter },
 107         { &CLSID_MPEG1Splitter, &QUARTZ_CreateMPEG1Splitter },
 108         { &CLSID_MMSPLITTER, &QUARTZ_CreateMPEG2Splitter },
 109         { &CLSID_AsyncReader, &QUARTZ_CreateAsyncReader },
 110         { &CLSID_URLReader, &QUARTZ_CreateURLReader },
 111         { &CLSID_AVIDec, &QUARTZ_CreateAVIDec },
 112         { &CLSID_Colour, &QUARTZ_CreateColour },
 113         { &CLSID_FileWriter, &QUARTZ_CreateFileWriter },
 114         { NULL, NULL },
 115 };
 116
 117 /* per-process variables */
 118 static CRITICAL_SECTION csHeap;
 119 static DWORD dwClassObjRef;
 120 static HANDLE hDLLHeap;
 121
 122 void* QUARTZ_AllocObj( DWORD dwSize )
 123 {
 124         void*   pv;
 125
 126         EnterCriticalSection( &csHeap );
 127         dwClassObjRef ++;
 128         pv = HeapAlloc( hDLLHeap, 0, dwSize );
 129         if ( pv == NULL )
 130                 dwClassObjRef --;
 131         LeaveCriticalSection( &csHeap );
 132
 133         return pv;
 134 }
 135
 136 void QUARTZ_FreeObj( void* pobj )
 137 {
 138         EnterCriticalSection( &csHeap );
 139         HeapFree( hDLLHeap, 0, pobj );
 140         dwClassObjRef --;
 141         LeaveCriticalSection( &csHeap );
 142 }
 143
 144 void* QUARTZ_AllocMem( DWORD dwSize )
 145 {
 146         return HeapAlloc( hDLLHeap, 0, dwSize );
 147 }
 148
 149 void QUARTZ_FreeMem( void* pMem )
 150 {
 151         HeapFree( hDLLHeap, 0, pMem );
 152 }
 153
 154 void* QUARTZ_ReallocMem( void* pMem, DWORD dwSize )
 155 {
 156         if ( pMem == NULL )
 157                 return QUARTZ_AllocMem( dwSize );
 158
 159         return HeapReAlloc( hDLLHeap, 0, pMem, dwSize );
 160 }
 161
 162 static
 163 LPWSTR QUARTZ_strncpyAtoW( LPWSTR lpwstr, LPCSTR lpstr, INT wbuflen )
 164 {
 165         INT     len;
 166
 167         len = MultiByteToWideChar( CP_ACP, 0, lpstr, -1, lpwstr, wbuflen );
 168         if ( len == 0 )
 169                 *lpwstr = 0;
 170         return lpwstr;
 171 }
 172
 173
 174 /************************************************************************/
 175
 176 static HRESULT WINAPI
 177 IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
 178 {
 179         ICOM_THIS(IClassFactoryImpl,iface);
 180
 181         TRACE("(%p)->(%p,%p)\n",This,riid,ppobj);
 182         if ( ( IsEqualGUID( &IID_IUnknown, riid ) ) ||
 183              ( IsEqualGUID( &IID_IClassFactory, riid ) ) )
 184         {
 185                 *ppobj = iface;
 186                 IClassFactory_AddRef(iface);
 187                 return S_OK;
 188         }
 189
 190         return E_NOINTERFACE;
 191 }
 192
 193 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
 194 {
 195         ICOM_THIS(IClassFactoryImpl,iface);
 196
 197         TRACE("(%p)->()\n",This);
 198
 199         return InterlockedExchangeAdd(&(This->ref),1) + 1;
 200 }
 201
 202 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
 203 {
 204         ICOM_THIS(IClassFactoryImpl,iface);
 205         LONG    ref;
 206
 207         TRACE("(%p)->()\n",This);
 208         ref = InterlockedExchangeAdd(&(This->ref),-1) - 1;
 209         if ( ref > 0 )
 210                 return (ULONG)ref;
 211
 212         QUARTZ_FreeObj(This);
 213         return 0;
 214 }
 215
 216 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj)
 217 {
 218         ICOM_THIS(IClassFactoryImpl,iface);
 219         HRESULT hr;
 220         IUnknown*       punk;
 221
 222         TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 223
 224         if ( ppobj == NULL )
 225                 return E_POINTER;
 226         if ( pOuter != NULL && !IsEqualGUID( riid, &IID_IUnknown ) )
 227                 return CLASS_E_NOAGGREGATION;
 228
 229         *ppobj = NULL;
 230
 231         hr = (*This->pEntry->pCreateIUnk)(pOuter,(void**)&punk);
 232         if ( hr != S_OK )
 233                 return hr;
 234
 235         hr = IUnknown_QueryInterface(punk,riid,ppobj);
 236         IUnknown_Release(punk);
 237
 238         return hr;
 239 }
 240
 241 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock)
 242 {
 243         ICOM_THIS(IClassFactoryImpl,iface);
 244         HRESULT hr;
 245
 246         TRACE("(%p)->(%d)\n",This,dolock);
 247         if (dolock)
 248                 hr = IClassFactory_AddRef(iface);
 249         else
 250                 hr = IClassFactory_Release(iface);
 251
 252         return hr;
 253 }
 254
 255
 256
 257 static HRESULT IClassFactory_Alloc( const CLSID* pclsid, void** ppobj )
 258 {
 259         const QUARTZ_CLASSENTRY*        pEntry;
 260         IClassFactoryImpl*      pImpl;
 261
 262         TRACE( "(%s,%p)\n", debugstr_guid(pclsid), ppobj );
 263
 264         pEntry = QUARTZ_ClassList;
 265         while ( pEntry->pclsid != NULL )
 266         {
 267                 if ( IsEqualGUID( pclsid, pEntry->pclsid ) )
 268                         goto found;
 269                 pEntry ++;
 270         }
 271
 272         return CLASS_E_CLASSNOTAVAILABLE;
 273 found:
 274         pImpl = (IClassFactoryImpl*)QUARTZ_AllocObj( sizeof(IClassFactoryImpl) );
 275         if ( pImpl == NULL )
 276                 return E_OUTOFMEMORY;
 277
 278         TRACE( "allocated successfully.\n" );
 279
 280         ICOM_VTBL(pImpl) = &iclassfact;
 281         pImpl->ref = 1;
 282         pImpl->pEntry = pEntry;
 283
 284         *ppobj = (void*)pImpl;
 285         return S_OK;
 286 }
 287
 288
 289 /***********************************************************************
 290  *              QUARTZ_InitProcess (internal)
 291  */
 292 static BOOL QUARTZ_InitProcess( void )
 293 {
 294         TRACE("()\n");
 295
 296         dwClassObjRef = 0;
 297         hDLLHeap = (HANDLE)NULL;
 298         InitializeCriticalSection( &csHeap );
 299
 300         hDLLHeap = HeapCreate( 0, 0x10000, 0 );
 301         if ( hDLLHeap == (HANDLE)NULL )
 302                 return FALSE;
 303
 304         return TRUE;
 305 }
 306
 307 /***********************************************************************
 308  *              QUARTZ_UninitProcess (internal)
 309  */
 310 static void QUARTZ_UninitProcess( void )
 311 {
 312         TRACE("()\n");
 313
 314         if ( dwClassObjRef != 0 )
 315                 ERR( "you must release some objects allocated from quartz.\n" );
 316         if ( hDLLHeap != (HANDLE)NULL )
 317         {
 318                 HeapDestroy( hDLLHeap );
 319                 hDLLHeap = (HANDLE)NULL;
 320         }
 321         DeleteCriticalSection( &csHeap );
 322 }
 323
 324 /***********************************************************************
 325  *              QUARTZ_DllMain
 326  */
 327 BOOL WINAPI QUARTZ_DllMain(
 328         HINSTANCE hInstDLL,
 329         DWORD fdwReason,
 330         LPVOID lpvReserved )
 331 {
 332         TRACE("(%08x,%08lx,%p)\n",hInstDLL,fdwReason,lpvReserved);
 333
 334         switch ( fdwReason )
 335         {
 336         case DLL_PROCESS_ATTACH:
 337                 if ( !QUARTZ_InitProcess() )
 338                         return FALSE;
 339                 break;
 340         case DLL_PROCESS_DETACH:
 341                 QUARTZ_UninitProcess();
 342                 break;
 343         case DLL_THREAD_ATTACH:
 344                 break;
 345         case DLL_THREAD_DETACH:
 346                 break;
 347         }
 348
 349         return TRUE;
 350 }
 351
 352
 353 /***********************************************************************
 354  *              DllCanUnloadNow (QUARTZ.@)
 355  *
 356  * RETURNS
 357  *    Success: S_OK
 358  *    Failure: S_FALSE
 359  */
 360 HRESULT WINAPI QUARTZ_DllCanUnloadNow(void)
 361 {
 362         HRESULT hr;
 363
 364         EnterCriticalSection( &csHeap );
 365         hr = ( dwClassObjRef == 0 ) ? S_OK : S_FALSE;
 366         LeaveCriticalSection( &csHeap );
 367
 368         return hr;
 369 }
 370
 371 /***********************************************************************
 372  *              DllGetClassObject (QUARTZ.@)
 373  */
 374 HRESULT WINAPI QUARTZ_DllGetClassObject(
 375                 const CLSID* pclsid,const IID* piid,void** ppv)
 376 {
 377         *ppv = NULL;
 378         if ( IsEqualCLSID( &IID_IUnknown, piid ) ||
 379              IsEqualCLSID( &IID_IClassFactory, piid ) )
 380         {
 381                 return IClassFactory_Alloc( pclsid, ppv );
 382         }
 383
 384         return CLASS_E_CLASSNOTAVAILABLE;
 385 }
 386
 387 /***********************************************************************
 388  *              DllRegisterServer (QUARTZ.@)
 389  */
 390
 391 HRESULT WINAPI QUARTZ_DllRegisterServer( void )
 392 {
 393         FIXME( "(): stub\n" );
 394         return E_FAIL;
 395 }
 396
 397 /***********************************************************************
 398  *              DllUnregisterServer (QUARTZ.@)
 399  */
 400
 401 HRESULT WINAPI QUARTZ_DllUnregisterServer( void )
 402 {
 403         FIXME( "(): stub\n" );
 404         return E_FAIL;
 405 }
 406
 407 /**************************************************************************/
 408 /**************************************************************************/
 409
 410 /* FIXME - all string should be defined in the resource of quartz. */
 411
 412 static LPCSTR hresult_to_string( HRESULT hr )
 413 {
 414         switch ( hr )
 415         {
 416         #define ENTRY(x)        case x: return (const char*)#x
 417         /* some known codes */
 418         ENTRY(S_OK);
 419         ENTRY(S_FALSE);
 420         ENTRY(E_FAIL);
 421         ENTRY(E_POINTER);
 422         ENTRY(E_NOTIMPL);
 423         ENTRY(E_NOINTERFACE);
 424         ENTRY(E_OUTOFMEMORY);
 425         ENTRY(CLASS_E_CLASSNOTAVAILABLE);
 426         ENTRY(CLASS_E_NOAGGREGATION);
 427
 428         /* vfwmsgs.h */
 429         ENTRY(VFW_S_NO_MORE_ITEMS);
 430         ENTRY(VFW_E_BAD_KEY);
 431         ENTRY(VFW_E_INVALIDMEDIATYPE);
 432         ENTRY(VFW_E_INVALIDSUBTYPE);
 433         ENTRY(VFW_E_NEED_OWNER);
 434         ENTRY(VFW_E_ENUM_OUT_OF_SYNC);
 435         ENTRY(VFW_E_ALREADY_CONNECTED);
 436         ENTRY(VFW_E_FILTER_ACTIVE);
 437         ENTRY(VFW_E_NO_TYPES);
 438         ENTRY(VFW_E_NO_ACCEPTABLE_TYPES);
 439         ENTRY(VFW_E_INVALID_DIRECTION);
 440         ENTRY(VFW_E_NOT_CONNECTED);
 441         ENTRY(VFW_E_NO_ALLOCATOR);
 442         ENTRY(VFW_E_RUNTIME_ERROR);
 443         ENTRY(VFW_E_BUFFER_NOTSET);
 444         ENTRY(VFW_E_BUFFER_OVERFLOW);
 445         ENTRY(VFW_E_BADALIGN);
 446         ENTRY(VFW_E_ALREADY_COMMITTED);
 447         ENTRY(VFW_E_BUFFERS_OUTSTANDING);
 448         ENTRY(VFW_E_NOT_COMMITTED);
 449         ENTRY(VFW_E_SIZENOTSET);
 450         ENTRY(VFW_E_NO_CLOCK);
 451         ENTRY(VFW_E_NO_SINK);
 452         ENTRY(VFW_E_NO_INTERFACE);
 453         ENTRY(VFW_E_NOT_FOUND);
 454         ENTRY(VFW_E_CANNOT_CONNECT);
 455         ENTRY(VFW_E_CANNOT_RENDER);
 456         ENTRY(VFW_E_CHANGING_FORMAT);
 457         ENTRY(VFW_E_NO_COLOR_KEY_SET);
 458         ENTRY(VFW_E_NOT_OVERLAY_CONNECTION);
 459         ENTRY(VFW_E_NOT_SAMPLE_CONNECTION);
 460         ENTRY(VFW_E_PALETTE_SET);
 461         ENTRY(VFW_E_COLOR_KEY_SET);
 462         ENTRY(VFW_E_NO_COLOR_KEY_FOUND);
 463         ENTRY(VFW_E_NO_PALETTE_AVAILABLE);
 464         ENTRY(VFW_E_NO_DISPLAY_PALETTE);
 465         ENTRY(VFW_E_TOO_MANY_COLORS);
 466         ENTRY(VFW_E_STATE_CHANGED);
 467         ENTRY(VFW_E_NOT_STOPPED);
 468         ENTRY(VFW_E_NOT_PAUSED);
 469         ENTRY(VFW_E_NOT_RUNNING);
 470         ENTRY(VFW_E_WRONG_STATE);
 471         ENTRY(VFW_E_START_TIME_AFTER_END);
 472         ENTRY(VFW_E_INVALID_RECT);
 473         ENTRY(VFW_E_TYPE_NOT_ACCEPTED);
 474         ENTRY(VFW_E_SAMPLE_REJECTED);
 475         ENTRY(VFW_E_SAMPLE_REJECTED_EOS);
 476         ENTRY(VFW_S_DUPLICATE_NAME);
 477         ENTRY(VFW_E_DUPLICATE_NAME);
 478         ENTRY(VFW_E_TIMEOUT);
 479         ENTRY(VFW_E_INVALID_FILE_FORMAT);
 480         ENTRY(VFW_E_ENUM_OUT_OF_RANGE);
 481         ENTRY(VFW_E_CIRCULAR_GRAPH);
 482         ENTRY(VFW_E_NOT_ALLOWED_TO_SAVE);
 483         ENTRY(VFW_E_TIME_ALREADY_PASSED);
 484         ENTRY(VFW_E_ALREADY_CANCELLED);
 485         ENTRY(VFW_E_CORRUPT_GRAPH_FILE);
 486         ENTRY(VFW_E_ADVISE_ALREADY_SET);
 487         ENTRY(VFW_S_STATE_INTERMEDIATE);
 488         ENTRY(VFW_E_NO_MODEX_AVAILABLE);
 489         ENTRY(VFW_E_NO_ADVISE_SET);
 490         ENTRY(VFW_E_NO_FULLSCREEN);
 491         ENTRY(VFW_E_IN_FULLSCREEN_MODE);
 492         ENTRY(VFW_E_UNKNOWN_FILE_TYPE);
 493         ENTRY(VFW_E_CANNOT_LOAD_SOURCE_FILTER);
 494         ENTRY(VFW_S_PARTIAL_RENDER);
 495         ENTRY(VFW_E_FILE_TOO_SHORT);
 496         ENTRY(VFW_E_INVALID_FILE_VERSION);
 497         ENTRY(VFW_S_SOME_DATA_IGNORED);
 498         ENTRY(VFW_S_CONNECTIONS_DEFERRED);
 499         ENTRY(VFW_E_INVALID_CLSID);
 500         ENTRY(VFW_E_INVALID_MEDIA_TYPE);
 501         ENTRY(VFW_E_SAMPLE_TIME_NOT_SET);
 502         ENTRY(VFW_S_RESOURCE_NOT_NEEDED);
 503         ENTRY(VFW_E_MEDIA_TIME_NOT_SET);
 504         ENTRY(VFW_E_NO_TIME_FORMAT_SET);
 505         ENTRY(VFW_E_MONO_AUDIO_HW);
 506         ENTRY(VFW_S_MEDIA_TYPE_IGNORED);
 507         ENTRY(VFW_E_NO_DECOMPRESSOR);
 508         ENTRY(VFW_E_NO_AUDIO_HARDWARE);
 509         ENTRY(VFW_S_VIDEO_NOT_RENDERED);
 510         ENTRY(VFW_S_AUDIO_NOT_RENDERED);
 511         ENTRY(VFW_E_RPZA);
 512         ENTRY(VFW_S_RPZA);
 513         ENTRY(VFW_E_PROCESSOR_NOT_SUITABLE);
 514         ENTRY(VFW_E_UNSUPPORTED_AUDIO);
 515         ENTRY(VFW_E_UNSUPPORTED_VIDEO);
 516         ENTRY(VFW_E_MPEG_NOT_CONSTRAINED);
 517         ENTRY(VFW_E_NOT_IN_GRAPH);
 518         ENTRY(VFW_S_ESTIMATED);
 519         ENTRY(VFW_E_NO_TIME_FORMAT);
 520         ENTRY(VFW_E_READ_ONLY);
 521         ENTRY(VFW_S_RESERVED);
 522         ENTRY(VFW_E_BUFFER_UNDERFLOW);
 523         ENTRY(VFW_E_UNSUPPORTED_STREAM);
 524         ENTRY(VFW_E_NO_TRANSPORT);
 525         ENTRY(VFW_S_STREAM_OFF);
 526         ENTRY(VFW_S_CANT_CUE);
 527         ENTRY(VFW_E_BAD_VIDEOCD);
 528         ENTRY(VFW_S_NO_STOP_TIME);
 529         ENTRY(VFW_E_OUT_OF_VIDEO_MEMORY);
 530         ENTRY(VFW_E_VP_NEGOTIATION_FAILED);
 531         ENTRY(VFW_E_DDRAW_CAPS_NOT_SUITABLE);
 532         ENTRY(VFW_E_NO_VP_HARDWARE);
 533         ENTRY(VFW_E_NO_CAPTURE_HARDWARE);
 534         ENTRY(VFW_E_DVD_OPERATION_INHIBITED);
 535         ENTRY(VFW_E_DVD_INVALIDDOMAIN);
 536         ENTRY(VFW_E_DVD_NO_BUTTON);
 537         ENTRY(VFW_E_DVD_GRAPHNOTREADY);
 538         ENTRY(VFW_E_DVD_RENDERFAIL);
 539         ENTRY(VFW_E_DVD_DECNOTENOUGH);
 540         ENTRY(VFW_E_DDRAW_VERSION_NOT_SUITABLE);
 541         ENTRY(VFW_E_COPYPROT_FAILED);
 542         ENTRY(VFW_S_NOPREVIEWPIN);
 543         ENTRY(VFW_E_TIME_EXPIRED);
 544         ENTRY(VFW_S_DVD_NON_ONE_SEQUENTIAL);
 545         ENTRY(VFW_E_DVD_WRONG_SPEED);
 546         ENTRY(VFW_E_DVD_MENU_DOES_NOT_EXIST);
 547         ENTRY(VFW_E_DVD_CMD_CANCELLED);
 548         ENTRY(VFW_E_DVD_STATE_WRONG_VERSION);
 549         ENTRY(VFW_E_DVD_STATE_CORRUPT);
 550         ENTRY(VFW_E_DVD_STATE_WRONG_DISC);
 551         ENTRY(VFW_E_DVD_INCOMPATIBLE_REGION);
 552         ENTRY(VFW_E_DVD_NO_ATTRIBUTES);
 553         ENTRY(VFW_E_DVD_NO_GOUP_PGC);
 554         ENTRY(VFW_E_DVD_LOW_PARENTAL_LEVEL);
 555         ENTRY(VFW_E_DVD_NOT_IN_KARAOKE_MODE);
 556         ENTRY(VFW_S_DVD_CHANNEL_CONTENTS_NOT_AVAILABLE);
 557         ENTRY(VFW_S_DVD_NOT_ACCURATE);
 558         ENTRY(VFW_E_FRAME_STEP_UNSUPPORTED);
 559         ENTRY(VFW_E_DVD_STREAM_DISABLED);
 560         ENTRY(VFW_E_DVD_TITLE_UNKNOWN);
 561         ENTRY(VFW_E_DVD_INVALID_DISC);
 562         ENTRY(VFW_E_DVD_NO_RESUME_INFORMATION);
 563         ENTRY(VFW_E_PIN_ALREADY_BLOCKED_ON_THIS_THREAD);
 564         ENTRY(VFW_E_PIN_ALREADY_BLOCKED);
 565         ENTRY(VFW_E_CERTIFICATION_FAILURE);
 566         #undef  ENTRY
 567         }
 568
 569         return NULL;
 570 }
 571
 572 /***********************************************************************
 573  *      AMGetErrorTextA (quartz.@)
 574  */
 575 DWORD WINAPI AMGetErrorTextA(HRESULT hr, LPSTR pszbuf, DWORD dwBufLen)
 576 {
 577         LPCSTR  lpszRes;
 578         DWORD len;
 579
 580         lpszRes = hresult_to_string( hr );
 581         if ( lpszRes == NULL )
 582                 return 0;
 583         len = (DWORD)(strlen(lpszRes)+1);
 584         if ( len > dwBufLen )
 585                 return 0;
 586
 587         memcpy( pszbuf, lpszRes, len );
 588         return len;
 589 }
 590
 591 /***********************************************************************
 592  *      AMGetErrorTextW (quartz.@)
 593  */
 594 DWORD WINAPI AMGetErrorTextW(HRESULT hr, LPWSTR pwszbuf, DWORD dwBufLen)
 595 {
 596         CHAR    szBuf[MAX_ERROR_TEXT_LEN+1];
 597         DWORD   dwLen;
 598
 599         dwLen = AMGetErrorTextA(hr,szBuf,MAX_ERROR_TEXT_LEN);
 600         if ( dwLen == 0 )
 601                 return 0;
 602         szBuf[dwLen] = 0;
 603
 604         QUARTZ_strncpyAtoW( pwszbuf, szBuf, dwBufLen );
 605
 606         return lstrlenW( pwszbuf );
 607 }