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
 102         { &CLSID_AudioRender, &QUARTZ_CreateAudioRenderer },
 103         { &CLSID_VideoRenderer, &QUARTZ_CreateVideoRenderer },
 104         { &CLSID_quartzWaveParser, &QUARTZ_CreateWaveParser },
 105         { &CLSID_AviSplitter, &QUARTZ_CreateAVISplitter },
 106         { &CLSID_MPEG1Splitter, &QUARTZ_CreateMPEG1Splitter },
 107         { &CLSID_AsyncReader, &QUARTZ_CreateAsyncReader },
 108         { &CLSID_URLReader, &QUARTZ_CreateURLReader },
 109         { &CLSID_AVIDec, &QUARTZ_CreateAVIDec },
 110         { &CLSID_Colour, &QUARTZ_CreateColour },
 111         { &CLSID_ACMWrapper, &QUARTZ_CreateACMWrapper },
 112         { &CLSID_FileWriter, &QUARTZ_CreateFileWriter },
 113         { &CLSID_CMpegAudioCodec, &QUARTZ_CreateCMpegAudioCodec },
 114         { &CLSID_CMpegVideoCodec, &QUARTZ_CreateCMpegVideoCodec },
 115         { NULL, NULL },
 116 };
 117
 118 /* per-process variables */
 119 static CRITICAL_SECTION csHeap;
 120 static DWORD dwClassObjRef;
 121 static HANDLE hDLLHeap;
 122
 123 void* QUARTZ_AllocObj( DWORD dwSize )
 124 {
 125         void*   pv;
 126
 127         EnterCriticalSection( &csHeap );
 128         dwClassObjRef ++;
 129         pv = HeapAlloc( hDLLHeap, 0, dwSize );
 130         if ( pv == NULL )
 131                 dwClassObjRef --;
 132         LeaveCriticalSection( &csHeap );
 133
 134         return pv;
 135 }
 136
 137 void QUARTZ_FreeObj( void* pobj )
 138 {
 139         EnterCriticalSection( &csHeap );
 140         HeapFree( hDLLHeap, 0, pobj );
 141         dwClassObjRef --;
 142         LeaveCriticalSection( &csHeap );
 143 }
 144
 145 void* QUARTZ_AllocMem( DWORD dwSize )
 146 {
 147         return HeapAlloc( hDLLHeap, 0, dwSize );
 148 }
 149
 150 void QUARTZ_FreeMem( void* pMem )
 151 {
 152         HeapFree( hDLLHeap, 0, pMem );
 153 }
 154
 155 void* QUARTZ_ReallocMem( void* pMem, DWORD dwSize )
 156 {
 157         if ( pMem == NULL )
 158                 return QUARTZ_AllocMem( dwSize );
 159
 160         return HeapReAlloc( hDLLHeap, 0, pMem, dwSize );
 161 }
 162
 163 static
 164 LPWSTR QUARTZ_strncpyAtoW( LPWSTR lpwstr, LPCSTR lpstr, INT wbuflen )
 165 {
 166         INT     len;
 167
 168         len = MultiByteToWideChar( CP_ACP, 0, lpstr, -1, lpwstr, wbuflen );
 169         if ( len == 0 )
 170                 *lpwstr = 0;
 171         return lpwstr;
 172 }
 173
 174
 175 /************************************************************************/
 176
 177 static HRESULT WINAPI
 178 IClassFactory_fnQueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
 179 {
 180         ICOM_THIS(IClassFactoryImpl,iface);
 181
 182         TRACE("(%p)->(%p,%p)\n",This,riid,ppobj);
 183         if ( ( IsEqualGUID( &IID_IUnknown, riid ) ) ||
 184              ( IsEqualGUID( &IID_IClassFactory, riid ) ) )
 185         {
 186                 *ppobj = iface;
 187                 IClassFactory_AddRef(iface);
 188                 return S_OK;
 189         }
 190
 191         return E_NOINTERFACE;
 192 }
 193
 194 static ULONG WINAPI IClassFactory_fnAddRef(LPCLASSFACTORY iface)
 195 {
 196         ICOM_THIS(IClassFactoryImpl,iface);
 197
 198         TRACE("(%p)->()\n",This);
 199
 200         return InterlockedExchangeAdd(&(This->ref),1) + 1;
 201 }
 202
 203 static ULONG WINAPI IClassFactory_fnRelease(LPCLASSFACTORY iface)
 204 {
 205         ICOM_THIS(IClassFactoryImpl,iface);
 206         LONG    ref;
 207
 208         TRACE("(%p)->()\n",This);
 209         ref = InterlockedExchangeAdd(&(This->ref),-1) - 1;
 210         if ( ref > 0 )
 211                 return (ULONG)ref;
 212
 213         QUARTZ_FreeObj(This);
 214         return 0;
 215 }
 216
 217 static HRESULT WINAPI IClassFactory_fnCreateInstance(LPCLASSFACTORY iface,LPUNKNOWN pOuter,REFIID riid,LPVOID *ppobj)
 218 {
 219         ICOM_THIS(IClassFactoryImpl,iface);
 220         HRESULT hr;
 221         IUnknown*       punk;
 222
 223         TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 224
 225         if ( ppobj == NULL )
 226                 return E_POINTER;
 227         if ( pOuter != NULL && !IsEqualGUID( riid, &IID_IUnknown ) )
 228                 return CLASS_E_NOAGGREGATION;
 229
 230         *ppobj = NULL;
 231
 232         hr = (*This->pEntry->pCreateIUnk)(pOuter,(void**)&punk);
 233         if ( hr != S_OK )
 234                 return hr;
 235
 236         hr = IUnknown_QueryInterface(punk,riid,ppobj);
 237         IUnknown_Release(punk);
 238
 239         return hr;
 240 }
 241
 242 static HRESULT WINAPI IClassFactory_fnLockServer(LPCLASSFACTORY iface,BOOL dolock)
 243 {
 244         ICOM_THIS(IClassFactoryImpl,iface);
 245         HRESULT hr;
 246
 247         TRACE("(%p)->(%d)\n",This,dolock);
 248         if (dolock)
 249                 hr = IClassFactory_AddRef(iface);
 250         else
 251                 hr = IClassFactory_Release(iface);
 252
 253         return hr;
 254 }
 255
 256
 257
 258 static HRESULT IClassFactory_Alloc( const CLSID* pclsid, void** ppobj )
 259 {
 260         const QUARTZ_CLASSENTRY*        pEntry;
 261         IClassFactoryImpl*      pImpl;
 262
 263         TRACE( "(%s,%p)\n", debugstr_guid(pclsid), ppobj );
 264
 265         pEntry = QUARTZ_ClassList;
 266         while ( pEntry->pclsid != NULL )
 267         {
 268                 if ( IsEqualGUID( pclsid, pEntry->pclsid ) )
 269                         goto found;
 270                 pEntry ++;
 271         }
 272
 273         return CLASS_E_CLASSNOTAVAILABLE;
 274 found:
 275         pImpl = (IClassFactoryImpl*)QUARTZ_AllocObj( sizeof(IClassFactoryImpl) );
 276         if ( pImpl == NULL )
 277                 return E_OUTOFMEMORY;
 278
 279         TRACE( "allocated successfully.\n" );
 280
 281         ICOM_VTBL(pImpl) = &iclassfact;
 282         pImpl->ref = 1;
 283         pImpl->pEntry = pEntry;
 284
 285         *ppobj = (void*)pImpl;
 286         return S_OK;
 287 }
 288
 289
 290 /***********************************************************************
 291  *              QUARTZ_InitProcess (internal)
 292  */
 293 static BOOL QUARTZ_InitProcess( void )
 294 {
 295         TRACE("()\n");
 296
 297         dwClassObjRef = 0;
 298         hDLLHeap = (HANDLE)NULL;
 299         InitializeCriticalSection( &csHeap );
 300
 301         hDLLHeap = HeapCreate( 0, 0x10000, 0 );
 302         if ( hDLLHeap == (HANDLE)NULL )
 303                 return FALSE;
 304
 305         return TRUE;
 306 }
 307
 308 /***********************************************************************
 309  *              QUARTZ_UninitProcess (internal)
 310  */
 311 static void QUARTZ_UninitProcess( void )
 312 {
 313         TRACE("()\n");
 314
 315         if ( dwClassObjRef != 0 )
 316                 ERR( "you must release some objects allocated from quartz.\n" );
 317         if ( hDLLHeap != (HANDLE)NULL )
 318         {
 319                 HeapDestroy( hDLLHeap );
 320                 hDLLHeap = (HANDLE)NULL;
 321         }
 322         DeleteCriticalSection( &csHeap );
 323 }
 324
 325 /***********************************************************************
 326  *              QUARTZ_DllMain
 327  */
 328 BOOL WINAPI QUARTZ_DllMain(
 329         HINSTANCE hInstDLL,
 330         DWORD fdwReason,
 331         LPVOID lpvReserved )
 332 {
 333         TRACE("(%08x,%08lx,%p)\n",hInstDLL,fdwReason,lpvReserved);
 334
 335         switch ( fdwReason )
 336         {
 337         case DLL_PROCESS_ATTACH:
 338                 if ( !QUARTZ_InitProcess() )
 339                         return FALSE;
 340                 break;
 341         case DLL_PROCESS_DETACH:
 342                 QUARTZ_UninitProcess();
 343                 break;
 344         case DLL_THREAD_ATTACH:
 345                 break;
 346         case DLL_THREAD_DETACH:
 347                 break;
 348         }
 349
 350         return TRUE;
 351 }
 352
 353
 354 /***********************************************************************
 355  *              DllCanUnloadNow (QUARTZ.@)
 356  *
 357  * RETURNS
 358  *    Success: S_OK
 359  *    Failure: S_FALSE
 360  */
 361 HRESULT WINAPI QUARTZ_DllCanUnloadNow(void)
 362 {
 363         HRESULT hr;
 364
 365         EnterCriticalSection( &csHeap );
 366         hr = ( dwClassObjRef == 0 ) ? S_OK : S_FALSE;
 367         LeaveCriticalSection( &csHeap );
 368
 369         return hr;
 370 }
 371
 372 /***********************************************************************
 373  *              DllGetClassObject (QUARTZ.@)
 374  */
 375 HRESULT WINAPI QUARTZ_DllGetClassObject(
 376                 const CLSID* pclsid,const IID* piid,void** ppv)
 377 {
 378         *ppv = NULL;
 379         if ( IsEqualCLSID( &IID_IUnknown, piid ) ||
 380              IsEqualCLSID( &IID_IClassFactory, piid ) )
 381         {
 382                 return IClassFactory_Alloc( pclsid, ppv );
 383         }
 384
 385         return CLASS_E_CLASSNOTAVAILABLE;
 386 }
 387
 388 /***********************************************************************
 389  *              DllRegisterServer (QUARTZ.@)
 390  */
 391
 392 HRESULT WINAPI QUARTZ_DllRegisterServer( void )
 393 {
 394         FIXME( "(): stub\n" );
 395         return E_FAIL;
 396 }
 397
 398 /***********************************************************************
 399  *              DllUnregisterServer (QUARTZ.@)
 400  */
 401
 402 HRESULT WINAPI QUARTZ_DllUnregisterServer( void )
 403 {
 404         FIXME( "(): stub\n" );
 405         return E_FAIL;
 406 }
 407
 408 /**************************************************************************/
 409 /**************************************************************************/
 410
 411 /* FIXME - all string should be defined in the resource of quartz. */
 412
 413 static LPCSTR hresult_to_string( HRESULT hr )
 414 {
 415         switch ( hr )
 416         {
 417         #define ENTRY(x)        case x: return (const char*)#x
 418         /* some known codes */
 419         ENTRY(S_OK);
 420         ENTRY(S_FALSE);
 421         ENTRY(E_FAIL);
 422         ENTRY(E_POINTER);
 423         ENTRY(E_NOTIMPL);
 424         ENTRY(E_NOINTERFACE);
 425         ENTRY(E_OUTOFMEMORY);
 426         ENTRY(CLASS_E_CLASSNOTAVAILABLE);
 427         ENTRY(CLASS_E_NOAGGREGATION);
 428
 429         /* vfwmsgs.h */
 430         ENTRY(VFW_S_NO_MORE_ITEMS);
 431         ENTRY(VFW_E_BAD_KEY);
 432         ENTRY(VFW_E_INVALIDMEDIATYPE);
 433         ENTRY(VFW_E_INVALIDSUBTYPE);
 434         ENTRY(VFW_E_NEED_OWNER);
 435         ENTRY(VFW_E_ENUM_OUT_OF_SYNC);
 436         ENTRY(VFW_E_ALREADY_CONNECTED);
 437         ENTRY(VFW_E_FILTER_ACTIVE);
 438         ENTRY(VFW_E_NO_TYPES);
 439         ENTRY(VFW_E_NO_ACCEPTABLE_TYPES);
 440         ENTRY(VFW_E_INVALID_DIRECTION);
 441         ENTRY(VFW_E_NOT_CONNECTED);
 442         ENTRY(VFW_E_NO_ALLOCATOR);
 443         ENTRY(VFW_E_RUNTIME_ERROR);
 444         ENTRY(VFW_E_BUFFER_NOTSET);
 445         ENTRY(VFW_E_BUFFER_OVERFLOW);
 446         ENTRY(VFW_E_BADALIGN);
 447         ENTRY(VFW_E_ALREADY_COMMITTED);
 448         ENTRY(VFW_E_BUFFERS_OUTSTANDING);
 449         ENTRY(VFW_E_NOT_COMMITTED);
 450         ENTRY(VFW_E_SIZENOTSET);
 451         ENTRY(VFW_E_NO_CLOCK);
 452         ENTRY(VFW_E_NO_SINK);
 453         ENTRY(VFW_E_NO_INTERFACE);
 454         ENTRY(VFW_E_NOT_FOUND);
 455         ENTRY(VFW_E_CANNOT_CONNECT);
 456         ENTRY(VFW_E_CANNOT_RENDER);
 457         ENTRY(VFW_E_CHANGING_FORMAT);
 458         ENTRY(VFW_E_NO_COLOR_KEY_SET);
 459         ENTRY(VFW_E_NOT_OVERLAY_CONNECTION);
 460         ENTRY(VFW_E_NOT_SAMPLE_CONNECTION);
 461         ENTRY(VFW_E_PALETTE_SET);
 462         ENTRY(VFW_E_COLOR_KEY_SET);
 463         ENTRY(VFW_E_NO_COLOR_KEY_FOUND);
 464         ENTRY(VFW_E_NO_PALETTE_AVAILABLE);
 465         ENTRY(VFW_E_NO_DISPLAY_PALETTE);
 466         ENTRY(VFW_E_TOO_MANY_COLORS);
 467         ENTRY(VFW_E_STATE_CHANGED);
 468         ENTRY(VFW_E_NOT_STOPPED);
 469         ENTRY(VFW_E_NOT_PAUSED);
 470         ENTRY(VFW_E_NOT_RUNNING);
 471         ENTRY(VFW_E_WRONG_STATE);
 472         ENTRY(VFW_E_START_TIME_AFTER_END);
 473         ENTRY(VFW_E_INVALID_RECT);
 474         ENTRY(VFW_E_TYPE_NOT_ACCEPTED);
 475         ENTRY(VFW_E_SAMPLE_REJECTED);
 476         ENTRY(VFW_E_SAMPLE_REJECTED_EOS);
 477         ENTRY(VFW_S_DUPLICATE_NAME);
 478         ENTRY(VFW_E_DUPLICATE_NAME);
 479         ENTRY(VFW_E_TIMEOUT);
 480         ENTRY(VFW_E_INVALID_FILE_FORMAT);
 481         ENTRY(VFW_E_ENUM_OUT_OF_RANGE);
 482         ENTRY(VFW_E_CIRCULAR_GRAPH);
 483         ENTRY(VFW_E_NOT_ALLOWED_TO_SAVE);
 484         ENTRY(VFW_E_TIME_ALREADY_PASSED);
 485         ENTRY(VFW_E_ALREADY_CANCELLED);
 486         ENTRY(VFW_E_CORRUPT_GRAPH_FILE);
 487         ENTRY(VFW_E_ADVISE_ALREADY_SET);
 488         ENTRY(VFW_S_STATE_INTERMEDIATE);
 489         ENTRY(VFW_E_NO_MODEX_AVAILABLE);
 490         ENTRY(VFW_E_NO_ADVISE_SET);
 491         ENTRY(VFW_E_NO_FULLSCREEN);
 492         ENTRY(VFW_E_IN_FULLSCREEN_MODE);
 493         ENTRY(VFW_E_UNKNOWN_FILE_TYPE);
 494         ENTRY(VFW_E_CANNOT_LOAD_SOURCE_FILTER);
 495         ENTRY(VFW_S_PARTIAL_RENDER);
 496         ENTRY(VFW_E_FILE_TOO_SHORT);
 497         ENTRY(VFW_E_INVALID_FILE_VERSION);
 498         ENTRY(VFW_S_SOME_DATA_IGNORED);
 499         ENTRY(VFW_S_CONNECTIONS_DEFERRED);
 500         ENTRY(VFW_E_INVALID_CLSID);
 501         ENTRY(VFW_E_INVALID_MEDIA_TYPE);
 502         ENTRY(VFW_E_SAMPLE_TIME_NOT_SET);
 503         ENTRY(VFW_S_RESOURCE_NOT_NEEDED);
 504         ENTRY(VFW_E_MEDIA_TIME_NOT_SET);
 505         ENTRY(VFW_E_NO_TIME_FORMAT_SET);
 506         ENTRY(VFW_E_MONO_AUDIO_HW);
 507         ENTRY(VFW_S_MEDIA_TYPE_IGNORED);
 508         ENTRY(VFW_E_NO_DECOMPRESSOR);
 509         ENTRY(VFW_E_NO_AUDIO_HARDWARE);
 510         ENTRY(VFW_S_VIDEO_NOT_RENDERED);
 511         ENTRY(VFW_S_AUDIO_NOT_RENDERED);
 512         ENTRY(VFW_E_RPZA);
 513         ENTRY(VFW_S_RPZA);
 514         ENTRY(VFW_E_PROCESSOR_NOT_SUITABLE);
 515         ENTRY(VFW_E_UNSUPPORTED_AUDIO);
 516         ENTRY(VFW_E_UNSUPPORTED_VIDEO);
 517         ENTRY(VFW_E_MPEG_NOT_CONSTRAINED);
 518         ENTRY(VFW_E_NOT_IN_GRAPH);
 519         ENTRY(VFW_S_ESTIMATED);
 520         ENTRY(VFW_E_NO_TIME_FORMAT);
 521         ENTRY(VFW_E_READ_ONLY);
 522         ENTRY(VFW_S_RESERVED);
 523         ENTRY(VFW_E_BUFFER_UNDERFLOW);
 524         ENTRY(VFW_E_UNSUPPORTED_STREAM);
 525         ENTRY(VFW_E_NO_TRANSPORT);
 526         ENTRY(VFW_S_STREAM_OFF);
 527         ENTRY(VFW_S_CANT_CUE);
 528         ENTRY(VFW_E_BAD_VIDEOCD);
 529         ENTRY(VFW_S_NO_STOP_TIME);
 530         ENTRY(VFW_E_OUT_OF_VIDEO_MEMORY);
 531         ENTRY(VFW_E_VP_NEGOTIATION_FAILED);
 532         ENTRY(VFW_E_DDRAW_CAPS_NOT_SUITABLE);
 533         ENTRY(VFW_E_NO_VP_HARDWARE);
 534         ENTRY(VFW_E_NO_CAPTURE_HARDWARE);
 535         ENTRY(VFW_E_DVD_OPERATION_INHIBITED);
 536         ENTRY(VFW_E_DVD_INVALIDDOMAIN);
 537         ENTRY(VFW_E_DVD_NO_BUTTON);
 538         ENTRY(VFW_E_DVD_GRAPHNOTREADY);
 539         ENTRY(VFW_E_DVD_RENDERFAIL);
 540         ENTRY(VFW_E_DVD_DECNOTENOUGH);
 541         ENTRY(VFW_E_DDRAW_VERSION_NOT_SUITABLE);
 542         ENTRY(VFW_E_COPYPROT_FAILED);
 543         ENTRY(VFW_S_NOPREVIEWPIN);
 544         ENTRY(VFW_E_TIME_EXPIRED);
 545         ENTRY(VFW_S_DVD_NON_ONE_SEQUENTIAL);
 546         ENTRY(VFW_E_DVD_WRONG_SPEED);
 547         ENTRY(VFW_E_DVD_MENU_DOES_NOT_EXIST);
 548         ENTRY(VFW_E_DVD_CMD_CANCELLED);
 549         ENTRY(VFW_E_DVD_STATE_WRONG_VERSION);
 550         ENTRY(VFW_E_DVD_STATE_CORRUPT);
 551         ENTRY(VFW_E_DVD_STATE_WRONG_DISC);
 552         ENTRY(VFW_E_DVD_INCOMPATIBLE_REGION);
 553         ENTRY(VFW_E_DVD_NO_ATTRIBUTES);
 554         ENTRY(VFW_E_DVD_NO_GOUP_PGC);
 555         ENTRY(VFW_E_DVD_LOW_PARENTAL_LEVEL);
 556         ENTRY(VFW_E_DVD_NOT_IN_KARAOKE_MODE);
 557         ENTRY(VFW_S_DVD_CHANNEL_CONTENTS_NOT_AVAILABLE);
 558         ENTRY(VFW_S_DVD_NOT_ACCURATE);
 559         ENTRY(VFW_E_FRAME_STEP_UNSUPPORTED);
 560         ENTRY(VFW_E_DVD_STREAM_DISABLED);
 561         ENTRY(VFW_E_DVD_TITLE_UNKNOWN);
 562         ENTRY(VFW_E_DVD_INVALID_DISC);
 563         ENTRY(VFW_E_DVD_NO_RESUME_INFORMATION);
 564         ENTRY(VFW_E_PIN_ALREADY_BLOCKED_ON_THIS_THREAD);
 565         ENTRY(VFW_E_PIN_ALREADY_BLOCKED);
 566         ENTRY(VFW_E_CERTIFICATION_FAILURE);
 567         #undef  ENTRY
 568         }
 569
 570         return NULL;
 571 }
 572
 573 /***********************************************************************
 574  *      AMGetErrorTextA (quartz.@)
 575  */
 576 DWORD WINAPI AMGetErrorTextA(HRESULT hr, LPSTR pszbuf, DWORD dwBufLen)
 577 {
 578         LPCSTR  lpszRes;
 579         DWORD len;
 580
 581         lpszRes = hresult_to_string( hr );
 582         if ( lpszRes == NULL )
 583                 return 0;
 584         len = (DWORD)(strlen(lpszRes)+1);
 585         if ( len > dwBufLen )
 586                 return 0;
 587
 588         memcpy( pszbuf, lpszRes, len );
 589         return len;
 590 }
 591
 592 /***********************************************************************
 593  *      AMGetErrorTextW (quartz.@)
 594  */
 595 DWORD WINAPI AMGetErrorTextW(HRESULT hr, LPWSTR pwszbuf, DWORD dwBufLen)
 596 {
 597         CHAR    szBuf[MAX_ERROR_TEXT_LEN+1];
 598         DWORD   dwLen;
 599
 600         dwLen = AMGetErrorTextA(hr,szBuf,MAX_ERROR_TEXT_LEN);
 601         if ( dwLen == 0 )
 602                 return 0;
 603         szBuf[dwLen] = 0;
 604
 605         QUARTZ_strncpyAtoW( pwszbuf, szBuf, dwBufLen );
 606
 607         return lstrlenW( pwszbuf );
 608 }