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

   1 /*
   2  * Memory Allocator and Media Sample Implementation
   3  *
   4  * Copyright 2003 Robert Shearman
   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 <assert.h>
  22 #include <limits.h>
  23 #include <stdarg.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "vfwmsgs.h"
  28
  29 #include "quartz_private.h"
  30 #include "wine/list.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  34
  35 void dump_AM_SAMPLE2_PROPERTIES(AM_SAMPLE2_PROPERTIES * pProps)
  36 {
  37     if (!pProps)
  38     {
  39         TRACE("AM_SAMPLE2_PROPERTIES: (null)\n");
  40         return;
  41     }
  42     TRACE("\tcbData: %ld\n", pProps->cbData);
  43     TRACE("\tdwTypeSpecificFlags: 0x%8lx\n", pProps->dwTypeSpecificFlags);
  44     TRACE("\tdwSampleFlags: 0x%8lx\n", pProps->dwSampleFlags);
  45     TRACE("\tlActual: %ld\n", pProps->lActual);
  46     TRACE("\ttStart: %lx%08lx%s\n", (LONG)(pProps->tStart >> 32), (LONG)pProps->tStart, pProps->dwSampleFlags & AM_SAMPLE_TIMEVALID ? "" : " (not valid)");
  47     TRACE("\ttStop: %lx%08lx%s\n", (LONG)(pProps->tStop >> 32), (LONG)pProps->tStop, pProps->dwSampleFlags & AM_SAMPLE_STOPVALID ? "" : " (not valid)");
  48     TRACE("\tdwStreamId: 0x%lx\n", pProps->dwStreamId);
  49     TRACE("\tpMediaType: %p\n", pProps->pMediaType);
  50     TRACE("\tpbBuffer: %p\n", pProps->pbBuffer);
  51     TRACE("\tcbBuffer: %ld\n", pProps->cbBuffer);
  52 }
  53
  54 typedef struct BaseMemAllocator
  55 {
  56     const IMemAllocatorVtbl * lpVtbl;
  57
  58     ULONG ref;
  59     ALLOCATOR_PROPERTIES * pProps;
  60     CRITICAL_SECTION csState;
  61     HRESULT (* fnAlloc) (IMemAllocator *);
  62     HRESULT (* fnFree)(IMemAllocator *);
  63     HANDLE hSemWaiting;
  64     BOOL bDecommitQueued;
  65     BOOL bCommitted;
  66     LONG lWaiting;
  67     struct list free_list;
  68     struct list used_list;
  69 } BaseMemAllocator;
  70
  71 typedef struct StdMediaSample2
  72 {
  73     const IMediaSample2Vtbl * lpvtbl;
  74
  75     ULONG ref;
  76     AM_SAMPLE2_PROPERTIES props;
  77     IMemAllocator * pParent;
  78     struct list listentry;
  79     LONGLONG tMediaStart;
  80     LONGLONG tMediaEnd;
  81 } StdMediaSample2;
  82
  83 static const struct IMemAllocatorVtbl BaseMemAllocator_VTable;
  84 static const struct IMediaSample2Vtbl StdMediaSample2_VTable;
  85
  86 #define AM_SAMPLE2_PROP_SIZE_WRITABLE (unsigned int)(&((AM_SAMPLE2_PROPERTIES *)0)->pbBuffer)
  87
  88 #ifdef _I64_MAX
  89 #define INVALID_MEDIA_TIME _I64_MAX
  90 #else
  91 #define INVALID_MEDIA_TIME ((long long)(~0ull >> 1))
  92 #endif
  93
  94 static HRESULT BaseMemAllocator_Init(HRESULT (* fnAlloc)(IMemAllocator *), HRESULT (* fnFree)(IMemAllocator *), BaseMemAllocator * pMemAlloc)
  95 {
  96     assert(fnAlloc && fnFree);
  97
  98     pMemAlloc->lpVtbl = &BaseMemAllocator_VTable;
  99
 100     pMemAlloc->ref = 1;
 101     pMemAlloc->pProps = NULL;
 102     list_init(&pMemAlloc->free_list);
 103     list_init(&pMemAlloc->used_list);
 104     pMemAlloc->fnAlloc = fnAlloc;
 105     pMemAlloc->fnFree = fnFree;
 106     pMemAlloc->bDecommitQueued = FALSE;
 107     pMemAlloc->bCommitted = FALSE;
 108     pMemAlloc->hSemWaiting = NULL;
 109     pMemAlloc->lWaiting = 0;
 110
 111     InitializeCriticalSection(&pMemAlloc->csState);
 112
 113     return S_OK;
 114 }
 115
 116 static HRESULT WINAPI BaseMemAllocator_QueryInterface(IMemAllocator * iface, REFIID riid, LPVOID * ppv)
 117 {
 118     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 119     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 120
 121     *ppv = NULL;
 122
 123     if (IsEqualIID(riid, &IID_IUnknown))
 124         *ppv = (LPVOID)This;
 125     else if (IsEqualIID(riid, &IID_IMemAllocator))
 126         *ppv = (LPVOID)This;
 127
 128     if (*ppv)
 129     {
 130         IUnknown_AddRef((IUnknown *)(*ppv));
 131         return S_OK;
 132     }
 133
 134     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 135
 136     return E_NOINTERFACE;
 137 }
 138
 139 static ULONG WINAPI BaseMemAllocator_AddRef(IMemAllocator * iface)
 140 {
 141     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 142     ULONG ref = InterlockedIncrement(&This->ref);
 143
 144     TRACE("(%p)->() AddRef from %ld\n", iface, ref - 1);
 145
 146     return ref;
 147 }
 148
 149 static ULONG WINAPI BaseMemAllocator_Release(IMemAllocator * iface)
 150 {
 151     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 152     ULONG ref = InterlockedDecrement(&This->ref);
 153
 154     TRACE("(%p)->() Release from %ld\n", iface, ref + 1);
 155
 156     if (!ref)
 157     {
 158         CloseHandle(This->hSemWaiting);
 159         if (This->bCommitted)
 160             This->fnFree(iface);
 161         HeapFree(GetProcessHeap(), 0, This->pProps);
 162         CoTaskMemFree(This);
 163         return 0;
 164     }
 165     return ref;
 166 }
 167
 168 static HRESULT WINAPI BaseMemAllocator_SetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pRequest, ALLOCATOR_PROPERTIES *pActual)
 169 {
 170     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 171     HRESULT hr;
 172
 173     TRACE("(%p, %p)\n", pRequest, pActual);
 174
 175     EnterCriticalSection(&This->csState);
 176     {
 177         if (!list_empty(&This->used_list))
 178             hr = VFW_E_BUFFERS_OUTSTANDING;
 179         else if (This->bCommitted)
 180             hr = VFW_E_ALREADY_COMMITTED;
 181         else
 182         {
 183             if (!This->pProps)
 184                 This->pProps = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->pProps));
 185
 186             if (!This->pProps)
 187                 hr = E_OUTOFMEMORY;
 188             else
 189             {
 190                 memcpy(This->pProps, pRequest, sizeof(*This->pProps));
 191
 192                 memcpy(pActual, pRequest, sizeof(*pActual));
 193
 194                 hr = S_OK;
 195             }
 196         }
 197     }
 198     LeaveCriticalSection(&This->csState);
 199
 200     return hr;
 201 }
 202
 203 static HRESULT WINAPI BaseMemAllocator_GetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pProps)
 204 {
 205     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 206     HRESULT hr = S_OK;
 207
 208     TRACE("(%p)\n", pProps);
 209
 210     EnterCriticalSection(&This->csState);
 211     {
 212         /* NOTE: this is different from the native version.
 213          * It would silently succeed if the properties had
 214          * not been set, but would fail further on down the
 215          * line with some obscure error like having an
 216          * invalid alignment. Whether or not our version
 217          * will cause any problems remains to be seen */
 218         if (!This->pProps)
 219             hr = VFW_E_SIZENOTSET;
 220         else
 221             memcpy(pProps, This->pProps, sizeof(*pProps));
 222     }
 223     LeaveCriticalSection(&This->csState);
 224
 225     return hr;
 226 }
 227
 228 static HRESULT WINAPI BaseMemAllocator_Commit(IMemAllocator * iface)
 229 {
 230     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 231     HRESULT hr;
 232
 233     TRACE("()\n");
 234
 235     EnterCriticalSection(&This->csState);
 236     {
 237         if (!This->pProps)
 238             hr = VFW_E_SIZENOTSET;
 239         else if (This->bCommitted)
 240             hr = VFW_E_ALREADY_COMMITTED;
 241         else if (This->bDecommitQueued)
 242         {
 243             This->bDecommitQueued = FALSE;
 244             hr = S_OK;
 245         }
 246         else
 247         {
 248             if (!(This->hSemWaiting = CreateSemaphoreW(NULL, This->pProps->cBuffers, This->pProps->cBuffers, NULL)))
 249             {
 250                 ERR("Couldn't create semaphore (error was %ld)\n", GetLastError());
 251                 hr = HRESULT_FROM_WIN32(GetLastError());
 252             }
 253             else
 254             {
 255                 hr = This->fnAlloc(iface);
 256                 if (SUCCEEDED(hr))
 257                     This->bCommitted = TRUE;
 258                 else
 259                     ERR("fnAlloc failed with error 0x%lx\n", hr);
 260             }
 261         }
 262     }
 263     LeaveCriticalSection(&This->csState);
 264
 265     return hr;
 266 }
 267
 268 static HRESULT WINAPI BaseMemAllocator_Decommit(IMemAllocator * iface)
 269 {
 270     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 271     HRESULT hr;
 272
 273     TRACE("()\n");
 274
 275     EnterCriticalSection(&This->csState);
 276     {
 277         if (!This->bCommitted)
 278             hr = VFW_E_NOT_COMMITTED;
 279         else
 280         {
 281             if (!list_empty(&This->used_list))
 282             {
 283                 This->bDecommitQueued = TRUE;
 284                 /* notify ALL waiting threads that they cannot be allocated a buffer any more */
 285                 ReleaseSemaphore(This->hSemWaiting, This->lWaiting, NULL);
 286
 287                 hr = S_OK;
 288             }
 289             else
 290             {
 291                 assert(This->lWaiting == 0);
 292
 293                 This->bCommitted = FALSE;
 294                 CloseHandle(This->hSemWaiting);
 295                 This->hSemWaiting = NULL;
 296
 297                 hr = This->fnFree(iface);
 298                 if (FAILED(hr))
 299                     ERR("fnFree failed with error 0x%lx\n", hr);
 300             }
 301         }
 302     }
 303     LeaveCriticalSection(&This->csState);
 304
 305     return hr;
 306 }
 307
 308 static HRESULT WINAPI BaseMemAllocator_GetBuffer(IMemAllocator * iface, IMediaSample ** pSample, REFERENCE_TIME *pStartTime, REFERENCE_TIME *pEndTime, DWORD dwFlags)
 309 {
 310     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 311     HRESULT hr = S_OK;
 312
 313     /* NOTE: The pStartTime and pEndTime parameters are not applied to the sample.
 314      * The allocator might use these values to determine which buffer it retrieves */
 315
 316     TRACE("(%p, %p, %p, %lx)\n", pSample, pStartTime, pEndTime, dwFlags);
 317
 318     *pSample = NULL;
 319
 320     if (!This->bCommitted)
 321         return VFW_E_NOT_COMMITTED;
 322
 323     This->lWaiting++;
 324     if (WaitForSingleObject(This->hSemWaiting, (dwFlags & AM_GBF_NOWAIT) ? 0 : INFINITE) != WAIT_OBJECT_0)
 325     {
 326         This->lWaiting--;
 327         return VFW_E_TIMEOUT;
 328     }
 329     This->lWaiting--;
 330
 331     EnterCriticalSection(&This->csState);
 332     {
 333         if (!This->bCommitted)
 334             hr = VFW_E_NOT_COMMITTED;
 335         else if (This->bDecommitQueued)
 336             hr = VFW_E_TIMEOUT;
 337         else
 338         {
 339             struct list * free = list_head(&This->free_list);
 340             list_remove(free);
 341             list_add_head(&This->used_list, free);
 342
 343             *pSample = (IMediaSample *)LIST_ENTRY(free, StdMediaSample2, listentry);
 344
 345             assert(((StdMediaSample2 *)*pSample)->ref == 0);
 346
 347             IMediaSample_AddRef(*pSample);
 348         }
 349     }
 350     LeaveCriticalSection(&This->csState);
 351
 352     return hr;
 353 }
 354
 355 static HRESULT WINAPI BaseMemAllocator_ReleaseBuffer(IMemAllocator * iface, IMediaSample * pSample)
 356 {
 357     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 358     StdMediaSample2 * pStdSample = (StdMediaSample2 *)pSample;
 359     HRESULT hr = S_OK;
 360
 361     TRACE("(%p)\n", pSample);
 362
 363     /* FIXME: make sure that sample is currently on the used list */
 364
 365     /* FIXME: we should probably check the ref count on the sample before freeing
 366      * it to make sure that it is not still in use */
 367     EnterCriticalSection(&This->csState);
 368     {
 369         if (!This->bCommitted)
 370             ERR("Releasing a buffer when the allocator is not committed?!?\n");
 371
 372                 /* remove from used_list */
 373         list_remove(&pStdSample->listentry);
 374
 375         list_add_head(&This->free_list, &pStdSample->listentry);
 376
 377         if (list_empty(&This->used_list) && This->bDecommitQueued && This->bCommitted)
 378         {
 379             HRESULT hrfree;
 380
 381             assert(This->lWaiting == 0);
 382
 383             This->bCommitted = FALSE;
 384             This->bDecommitQueued = FALSE;
 385
 386             CloseHandle(This->hSemWaiting);
 387             This->hSemWaiting = NULL;
 388
 389             if (FAILED(hrfree = This->fnFree(iface)))
 390                 ERR("fnFree failed with error 0x%lx\n", hrfree);
 391         }
 392     }
 393     LeaveCriticalSection(&This->csState);
 394
 395     /* notify a waiting thread that there is now a free buffer */
 396     if (!ReleaseSemaphore(This->hSemWaiting, 1, NULL))
 397     {
 398         ERR("ReleaseSemaphore failed with error %ld\n", GetLastError());
 399         hr = HRESULT_FROM_WIN32(GetLastError());
 400     }
 401
 402     return hr;
 403 }
 404
 405 static const IMemAllocatorVtbl BaseMemAllocator_VTable =
 406 {
 407     BaseMemAllocator_QueryInterface,
 408     BaseMemAllocator_AddRef,
 409     BaseMemAllocator_Release,
 410     BaseMemAllocator_SetProperties,
 411     BaseMemAllocator_GetProperties,
 412     BaseMemAllocator_Commit,
 413     BaseMemAllocator_Decommit,
 414     BaseMemAllocator_GetBuffer,
 415     BaseMemAllocator_ReleaseBuffer
 416 };
 417
 418 static HRESULT StdMediaSample2_Construct(BYTE * pbBuffer, LONG cbBuffer, IMemAllocator * pParent, StdMediaSample2 ** ppSample)
 419 {
 420     assert(pbBuffer && pParent && (cbBuffer > 0));
 421
 422     if (!(*ppSample = CoTaskMemAlloc(sizeof(StdMediaSample2))))
 423         return E_OUTOFMEMORY;
 424
 425     (*ppSample)->lpvtbl = &StdMediaSample2_VTable;
 426     (*ppSample)->ref = 0;
 427     ZeroMemory(&(*ppSample)->props, sizeof((*ppSample)->props));
 428
 429     /* NOTE: no need to AddRef as the parent is guaranteed to be around
 430      * at least as long as us and we don't want to create circular
 431      * dependencies on the ref count */
 432     (*ppSample)->pParent = pParent;
 433     (*ppSample)->props.cbData = sizeof(AM_SAMPLE2_PROPERTIES);
 434     (*ppSample)->props.cbBuffer = (*ppSample)->props.lActual = cbBuffer;
 435     (*ppSample)->props.pbBuffer = pbBuffer;
 436     (*ppSample)->tMediaStart = INVALID_MEDIA_TIME;
 437     (*ppSample)->tMediaEnd = 0;
 438
 439     return S_OK;
 440 }
 441
 442 static void StdMediaSample2_Delete(StdMediaSample2 * This)
 443 {
 444     /* NOTE: does not remove itself from the list it belongs to */
 445     CoTaskMemFree(This);
 446 }
 447
 448 static HRESULT WINAPI StdMediaSample2_QueryInterface(IMediaSample2 * iface, REFIID riid, LPVOID * ppv)
 449 {
 450     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 451     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 452
 453     *ppv = NULL;
 454
 455     if (IsEqualIID(riid, &IID_IUnknown))
 456         *ppv = (LPVOID)This;
 457     else if (IsEqualIID(riid, &IID_IMediaSample))
 458         *ppv = (LPVOID)This;
 459     else if (IsEqualIID(riid, &IID_IMediaSample2))
 460         *ppv = (LPVOID)This;
 461
 462     if (*ppv)
 463     {
 464         IUnknown_AddRef((IUnknown *)(*ppv));
 465         return S_OK;
 466     }
 467
 468     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 469
 470     return E_NOINTERFACE;
 471 }
 472
 473 static ULONG WINAPI StdMediaSample2_AddRef(IMediaSample2 * iface)
 474 {
 475     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 476     ULONG ref = InterlockedIncrement(&This->ref);
 477
 478     TRACE("(%p)->() AddRef from %ld\n", iface, ref - 1);
 479
 480     return ref;
 481 }
 482
 483 static ULONG WINAPI StdMediaSample2_Release(IMediaSample2 * iface)
 484 {
 485     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 486     ULONG ref = InterlockedDecrement(&This->ref);
 487
 488     TRACE("(%p)->() Release from %ld\n", iface, ref + 1);
 489
 490     if (!ref)
 491     {
 492         IMemAllocator_ReleaseBuffer(This->pParent, (IMediaSample *)iface);
 493         return 0;
 494     }
 495     return ref;
 496 }
 497
 498 static HRESULT WINAPI StdMediaSample2_GetPointer(IMediaSample2 * iface, BYTE ** ppBuffer)
 499 {
 500     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 501
 502     TRACE("(%p)\n", ppBuffer);
 503
 504     *ppBuffer = This->props.pbBuffer;
 505
 506     return S_OK;
 507 }
 508
 509 static long WINAPI StdMediaSample2_GetSize(IMediaSample2 * iface)
 510 {
 511     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 512
 513     TRACE("StdMediaSample2_GetSize()\n");
 514
 515     return This->props.cbBuffer;
 516 }
 517
 518 static HRESULT WINAPI StdMediaSample2_GetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME * pEnd)
 519 {
 520     HRESULT hr;
 521     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 522
 523     TRACE("(%p, %p)\n", pStart, pEnd);
 524
 525     if (!(This->props.dwSampleFlags & AM_SAMPLE_TIMEVALID))
 526         hr = VFW_E_SAMPLE_TIME_NOT_SET;
 527     else if (!(This->props.dwSampleFlags & AM_SAMPLE_STOPVALID))
 528     {
 529         *pStart = This->props.tStart;
 530         *pEnd = This->props.tStart + 1;
 531
 532         hr = VFW_S_NO_STOP_TIME;
 533     }
 534     else
 535     {
 536         *pStart = This->props.tStart;
 537         *pEnd = This->props.tStop;
 538
 539         hr = S_OK;
 540     }
 541
 542     return S_OK;
 543 }
 544
 545 static HRESULT WINAPI StdMediaSample2_SetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME * pEnd)
 546 {
 547     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 548
 549     TRACE("(%p, %p)\n", pStart, pEnd);
 550
 551     if (pStart)
 552     {
 553         This->props.tStart = *pStart;
 554         This->props.dwSampleFlags |= AM_SAMPLE_TIMEVALID;
 555     }
 556     else
 557         This->props.dwSampleFlags &= ~AM_SAMPLE_TIMEVALID;
 558
 559     if (pEnd)
 560     {
 561         This->props.tStop = *pEnd;
 562         This->props.dwSampleFlags |= AM_SAMPLE_STOPVALID;
 563     }
 564     else
 565         This->props.dwSampleFlags &= ~AM_SAMPLE_STOPVALID;
 566
 567     return S_OK;
 568 }
 569
 570 static HRESULT WINAPI StdMediaSample2_IsSyncPoint(IMediaSample2 * iface)
 571 {
 572     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 573
 574     TRACE("()\n");
 575
 576     return (This->props.dwSampleFlags & AM_SAMPLE_SPLICEPOINT) ? S_OK : S_FALSE;
 577 }
 578
 579 static HRESULT WINAPI StdMediaSample2_SetSyncPoint(IMediaSample2 * iface, BOOL bIsSyncPoint)
 580 {
 581     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 582
 583     TRACE("(%s)\n", bIsSyncPoint ? "TRUE" : "FALSE");
 584
 585     This->props.dwSampleFlags = (This->props.dwSampleFlags & ~AM_SAMPLE_SPLICEPOINT) | bIsSyncPoint ? AM_SAMPLE_SPLICEPOINT : 0;
 586
 587     return S_OK;
 588 }
 589
 590 static HRESULT WINAPI StdMediaSample2_IsPreroll(IMediaSample2 * iface)
 591 {
 592     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 593
 594     TRACE("()\n");
 595
 596     return (This->props.dwSampleFlags & AM_SAMPLE_PREROLL) ? S_OK : S_FALSE;
 597 }
 598
 599 static HRESULT WINAPI StdMediaSample2_SetPreroll(IMediaSample2 * iface, BOOL bIsPreroll)
 600 {
 601     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 602
 603     TRACE("(%s)\n", bIsPreroll ? "TRUE" : "FALSE");
 604
 605     This->props.dwSampleFlags = (This->props.dwSampleFlags & ~AM_SAMPLE_PREROLL) | bIsPreroll ? AM_SAMPLE_PREROLL : 0;
 606
 607     return S_OK;
 608 }
 609
 610 static LONG WINAPI StdMediaSample2_GetActualDataLength(IMediaSample2 * iface)
 611 {
 612     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 613
 614     TRACE("()\n");
 615
 616     return This->props.lActual;
 617 }
 618
 619 static HRESULT WINAPI StdMediaSample2_SetActualDataLength(IMediaSample2 * iface, LONG len)
 620 {
 621     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 622
 623     TRACE("(%ld)\n", len);
 624
 625     if ((len > This->props.cbBuffer) || (len < 0))
 626         return VFW_E_BUFFER_OVERFLOW;
 627     else
 628     {
 629         This->props.lActual = len;
 630         return S_OK;
 631     }
 632 }
 633
 634 static HRESULT WINAPI StdMediaSample2_GetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE ** ppMediaType)
 635 {
 636     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 637
 638     TRACE("(%p)\n", ppMediaType);
 639
 640     if (!This->props.pMediaType) {
 641         /* Make sure we return a NULL pointer (required by native Quartz dll) */
 642         if (ppMediaType)
 643             *ppMediaType = NULL;
 644         return S_FALSE;
 645     }
 646
 647     if (!(*ppMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
 648         return E_OUTOFMEMORY;
 649
 650     return CopyMediaType(*ppMediaType, This->props.pMediaType);
 651 }
 652
 653 static HRESULT WINAPI StdMediaSample2_SetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE * pMediaType)
 654 {
 655     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 656
 657     TRACE("(%p)\n", pMediaType);
 658
 659     if (This->props.pMediaType)
 660         DeleteMediaType(This->props.pMediaType);
 661     else if (!(This->props.pMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
 662         return E_OUTOFMEMORY;
 663
 664     return CopyMediaType(This->props.pMediaType, pMediaType);
 665 }
 666
 667 static HRESULT WINAPI StdMediaSample2_IsDiscontinuity(IMediaSample2 * iface)
 668 {
 669     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 670
 671     TRACE("()\n");
 672
 673     return (This->props.dwSampleFlags & AM_SAMPLE_DATADISCONTINUITY) ? S_OK : S_FALSE;
 674 }
 675
 676 static HRESULT WINAPI StdMediaSample2_SetDiscontinuity(IMediaSample2 * iface, BOOL bIsDiscontinuity)
 677 {
 678     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 679
 680     TRACE("(%s)\n", bIsDiscontinuity ? "TRUE" : "FALSE");
 681
 682     This->props.dwSampleFlags = (This->props.dwSampleFlags & ~AM_SAMPLE_DATADISCONTINUITY) | bIsDiscontinuity ? AM_SAMPLE_DATADISCONTINUITY : 0;
 683
 684     return S_OK;
 685 }
 686
 687 static HRESULT WINAPI StdMediaSample2_GetMediaTime(IMediaSample2 * iface, LONGLONG * pStart, LONGLONG * pEnd)
 688 {
 689     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 690
 691     TRACE("(%p, %p)\n", pStart, pEnd);
 692
 693     if (This->tMediaStart == INVALID_MEDIA_TIME)
 694         return VFW_E_MEDIA_TIME_NOT_SET;
 695
 696     *pStart = This->tMediaStart;
 697     *pEnd = This->tMediaEnd;
 698
 699     return E_NOTIMPL;
 700 }
 701
 702 static HRESULT WINAPI StdMediaSample2_SetMediaTime(IMediaSample2 * iface, LONGLONG * pStart, LONGLONG * pEnd)
 703 {
 704     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 705
 706     TRACE("(%p, %p)\n", pStart, pEnd);
 707
 708     if (pStart)
 709         This->tMediaStart = *pStart;
 710     else
 711         This->tMediaStart = INVALID_MEDIA_TIME;
 712
 713     if (pEnd)
 714         This->tMediaEnd = *pEnd;
 715     else
 716         This->tMediaEnd = 0;
 717
 718     return S_OK;
 719 }
 720
 721 static HRESULT WINAPI StdMediaSample2_GetProperties(IMediaSample2 * iface, DWORD cbProperties, BYTE * pbProperties)
 722 {
 723     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 724
 725     TRACE("(%ld, %p)\n", cbProperties, pbProperties);
 726
 727     memcpy(pbProperties, &This->props, min(cbProperties, sizeof(This->props)));
 728
 729     return S_OK;
 730 }
 731
 732 static HRESULT WINAPI StdMediaSample2_SetProperties(IMediaSample2 * iface, DWORD cbProperties, const BYTE * pbProperties)
 733 {
 734     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 735
 736     TRACE("(%ld, %p)\n", cbProperties, pbProperties);
 737
 738     /* NOTE: pbBuffer and cbBuffer are read-only */
 739     memcpy(&This->props, pbProperties, min(cbProperties, AM_SAMPLE2_PROP_SIZE_WRITABLE));
 740
 741     return S_OK;
 742 }
 743
 744 static const IMediaSample2Vtbl StdMediaSample2_VTable =
 745 {
 746     StdMediaSample2_QueryInterface,
 747     StdMediaSample2_AddRef,
 748     StdMediaSample2_Release,
 749     StdMediaSample2_GetPointer,
 750     StdMediaSample2_GetSize,
 751     StdMediaSample2_GetTime,
 752     StdMediaSample2_SetTime,
 753     StdMediaSample2_IsSyncPoint,
 754     StdMediaSample2_SetSyncPoint,
 755     StdMediaSample2_IsPreroll,
 756     StdMediaSample2_SetPreroll,
 757     StdMediaSample2_GetActualDataLength,
 758     StdMediaSample2_SetActualDataLength,
 759     StdMediaSample2_GetMediaType,
 760     StdMediaSample2_SetMediaType,
 761     StdMediaSample2_IsDiscontinuity,
 762     StdMediaSample2_SetDiscontinuity,
 763     StdMediaSample2_GetMediaTime,
 764     StdMediaSample2_SetMediaTime,
 765     StdMediaSample2_GetProperties,
 766     StdMediaSample2_SetProperties
 767 };
 768
 769 typedef struct StdMemAllocator
 770 {
 771     BaseMemAllocator base;
 772     LPVOID pMemory;
 773 } StdMemAllocator;
 774
 775 static HRESULT StdMemAllocator_Alloc(IMemAllocator * iface)
 776 {
 777     StdMemAllocator *This = (StdMemAllocator *)iface;
 778     StdMediaSample2 * pSample = NULL;
 779     SYSTEM_INFO si;
 780     long i;
 781
 782     assert(list_empty(&This->base.free_list));
 783
 784     /* check alignment */
 785     GetSystemInfo(&si);
 786
 787     /* we do not allow a courser alignment than the OS page size */
 788     if ((si.dwPageSize % This->base.pProps->cbAlign) != 0)
 789         return VFW_E_BADALIGN;
 790
 791     /* FIXME: each sample has to have its buffer start on the right alignment.
 792      * We don't do this at the moment */
 793
 794     /* allocate memory */
 795     This->pMemory = VirtualAlloc(NULL, (This->base.pProps->cbBuffer + This->base.pProps->cbPrefix) * This->base.pProps->cBuffers, MEM_COMMIT, PAGE_READWRITE);
 796
 797     for (i = This->base.pProps->cBuffers - 1; i >= 0; i--)
 798     {
 799         /* pbBuffer does not start at the base address, it starts at base + cbPrefix */
 800         BYTE * pbBuffer = (BYTE *)This->pMemory + i * (This->base.pProps->cbBuffer + This->base.pProps->cbPrefix) + This->base.pProps->cbPrefix;
 801
 802         StdMediaSample2_Construct(pbBuffer, This->base.pProps->cbBuffer, iface, &pSample);
 803
 804         list_add_head(&This->base.free_list, &pSample->listentry);
 805     }
 806
 807     return S_OK;
 808 }
 809
 810 static HRESULT StdMemAllocator_Free(IMemAllocator * iface)
 811 {
 812     StdMemAllocator *This = (StdMemAllocator *)iface;
 813     struct list * cursor;
 814
 815     assert(list_empty(&This->base.used_list));
 816
 817     while ((cursor = list_head(&This->base.free_list)) != NULL)
 818     {
 819         list_remove(cursor);
 820         StdMediaSample2_Delete(LIST_ENTRY(cursor, StdMediaSample2, listentry));
 821     }
 822
 823     /* free memory */
 824     if (!VirtualFree(This->pMemory, 0, MEM_RELEASE))
 825     {
 826         ERR("Couldn't free memory. Error: %ld\n", GetLastError());
 827         return HRESULT_FROM_WIN32(GetLastError());
 828     }
 829
 830     return S_OK;
 831 }
 832
 833 HRESULT StdMemAllocator_create(LPUNKNOWN lpUnkOuter, LPVOID * ppv)
 834 {
 835     StdMemAllocator * pMemAlloc;
 836     HRESULT hr;
 837
 838     *ppv = NULL;
 839
 840     if (lpUnkOuter)
 841         return CLASS_E_NOAGGREGATION;
 842
 843     if (!(pMemAlloc = CoTaskMemAlloc(sizeof(*pMemAlloc))))
 844         return E_OUTOFMEMORY;
 845
 846     pMemAlloc->pMemory = NULL;
 847
 848     if (SUCCEEDED(hr = BaseMemAllocator_Init(StdMemAllocator_Alloc, StdMemAllocator_Free, &pMemAlloc->base)))
 849         *ppv = (LPVOID)pMemAlloc;
 850     else
 851         CoTaskMemFree(pMemAlloc);
 852
 853     return hr;
 854 }