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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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/debug.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  33
  34 typedef struct StdMediaSample2
  35 {
  36     IMediaSample2 IMediaSample2_iface;
  37     LONG ref;
  38     AM_SAMPLE2_PROPERTIES props;
  39     IMemAllocator * pParent;
  40     struct list listentry;
  41     LONGLONG tMediaStart;
  42     LONGLONG tMediaEnd;
  43     BOOL media_time_valid;
  44 } StdMediaSample2;
  45
  46 typedef struct BaseMemAllocator
  47 {
  48     IMemAllocator IMemAllocator_iface;
  49
  50     LONG ref;
  51     ALLOCATOR_PROPERTIES props;
  52     HRESULT (* fnAlloc) (IMemAllocator *);
  53     HRESULT (* fnFree)(IMemAllocator *);
  54     HRESULT (* fnVerify)(IMemAllocator *, ALLOCATOR_PROPERTIES *);
  55     HRESULT (* fnBufferPrepare)(IMemAllocator *, StdMediaSample2 *, DWORD flags);
  56     HRESULT (* fnBufferReleased)(IMemAllocator *, StdMediaSample2 *);
  57     void (* fnDestroyed)(IMemAllocator *);
  58     HANDLE hSemWaiting;
  59     BOOL bDecommitQueued;
  60     BOOL bCommitted;
  61     LONG lWaiting;
  62     struct list free_list;
  63     struct list used_list;
  64     CRITICAL_SECTION *pCritSect;
  65 } BaseMemAllocator;
  66
  67 static inline BaseMemAllocator *impl_from_IMemAllocator(IMemAllocator *iface)
  68 {
  69     return CONTAINING_RECORD(iface, BaseMemAllocator, IMemAllocator_iface);
  70 }
  71
  72 static const IMemAllocatorVtbl BaseMemAllocator_VTable;
  73 static const IMediaSample2Vtbl StdMediaSample2_VTable;
  74 static inline StdMediaSample2 *unsafe_impl_from_IMediaSample(IMediaSample * iface);
  75
  76 #define AM_SAMPLE2_PROP_SIZE_WRITABLE FIELD_OFFSET(AM_SAMPLE2_PROPERTIES, pbBuffer)
  77
  78 static HRESULT BaseMemAllocator_Init(HRESULT (* fnAlloc)(IMemAllocator *),
  79                                      HRESULT (* fnFree)(IMemAllocator *),
  80                                      HRESULT (* fnVerify)(IMemAllocator *, ALLOCATOR_PROPERTIES *),
  81                                      HRESULT (* fnBufferPrepare)(IMemAllocator *, StdMediaSample2 *, DWORD),
  82                                      HRESULT (* fnBufferReleased)(IMemAllocator *, StdMediaSample2 *),
  83                                      void (* fnDestroyed)(IMemAllocator *),
  84                                      CRITICAL_SECTION *pCritSect,
  85                                      BaseMemAllocator * pMemAlloc)
  86 {
  87     assert(fnAlloc && fnFree && fnDestroyed);
  88
  89     pMemAlloc->IMemAllocator_iface.lpVtbl = &BaseMemAllocator_VTable;
  90
  91     pMemAlloc->ref = 1;
  92     ZeroMemory(&pMemAlloc->props, sizeof(pMemAlloc->props));
  93     list_init(&pMemAlloc->free_list);
  94     list_init(&pMemAlloc->used_list);
  95     pMemAlloc->fnAlloc = fnAlloc;
  96     pMemAlloc->fnFree = fnFree;
  97     pMemAlloc->fnVerify = fnVerify;
  98     pMemAlloc->fnBufferPrepare = fnBufferPrepare;
  99     pMemAlloc->fnBufferReleased = fnBufferReleased;
 100     pMemAlloc->fnDestroyed = fnDestroyed;
 101     pMemAlloc->bDecommitQueued = FALSE;
 102     pMemAlloc->bCommitted = FALSE;
 103     pMemAlloc->hSemWaiting = NULL;
 104     pMemAlloc->lWaiting = 0;
 105     pMemAlloc->pCritSect = pCritSect;
 106
 107     return S_OK;
 108 }
 109
 110 static HRESULT WINAPI BaseMemAllocator_QueryInterface(IMemAllocator * iface, REFIID riid, LPVOID * ppv)
 111 {
 112     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 113     TRACE("(%p)->(%s, %p)\n", This, qzdebugstr_guid(riid), ppv);
 114
 115     *ppv = NULL;
 116
 117     if (IsEqualIID(riid, &IID_IUnknown))
 118         *ppv = &This->IMemAllocator_iface;
 119     else if (IsEqualIID(riid, &IID_IMemAllocator))
 120         *ppv = &This->IMemAllocator_iface;
 121
 122     if (*ppv)
 123     {
 124         IUnknown_AddRef((IUnknown *)(*ppv));
 125         return S_OK;
 126     }
 127
 128     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 129
 130     return E_NOINTERFACE;
 131 }
 132
 133 static ULONG WINAPI BaseMemAllocator_AddRef(IMemAllocator * iface)
 134 {
 135     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 136     ULONG ref = InterlockedIncrement(&This->ref);
 137
 138     TRACE("%p increasing refcount to %lu.\n", This, ref);
 139
 140     return ref;
 141 }
 142
 143 static ULONG WINAPI BaseMemAllocator_Release(IMemAllocator * iface)
 144 {
 145     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 146     ULONG ref = InterlockedDecrement(&This->ref);
 147
 148     TRACE("%p decreasing refcount to %lu.\n", This, ref);
 149
 150     if (!ref)
 151     {
 152         CloseHandle(This->hSemWaiting);
 153         if (This->bCommitted)
 154             This->fnFree(iface);
 155
 156         This->fnDestroyed(iface);
 157         return 0;
 158     }
 159     return ref;
 160 }
 161
 162 static HRESULT WINAPI BaseMemAllocator_SetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pRequest, ALLOCATOR_PROPERTIES *pActual)
 163 {
 164     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 165     HRESULT hr;
 166
 167     TRACE("(%p)->(%p, %p)\n", This, pRequest, pActual);
 168
 169     TRACE("Requested %ld buffers, size %ld, alignment %ld, prefix %ld.\n",
 170             pRequest->cBuffers, pRequest->cbBuffer, pRequest->cbAlign, pRequest->cbPrefix);
 171
 172     EnterCriticalSection(This->pCritSect);
 173     {
 174         if (!list_empty(&This->used_list))
 175             hr = VFW_E_BUFFERS_OUTSTANDING;
 176         else if (This->bCommitted)
 177             hr = VFW_E_ALREADY_COMMITTED;
 178         else if (pRequest->cbAlign == 0)
 179             hr = VFW_E_BADALIGN;
 180         else
 181         {
 182             if (This->fnVerify)
 183                  hr = This->fnVerify(iface, pRequest);
 184             else
 185                  hr = S_OK;
 186
 187             if (SUCCEEDED(hr))
 188                  This->props = *pRequest;
 189
 190             *pActual = This->props;
 191         }
 192     }
 193     LeaveCriticalSection(This->pCritSect);
 194
 195     return hr;
 196 }
 197
 198 static HRESULT WINAPI BaseMemAllocator_GetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pProps)
 199 {
 200     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 201
 202     TRACE("(%p)->(%p)\n", This, pProps);
 203
 204     EnterCriticalSection(This->pCritSect);
 205     {
 206          memcpy(pProps, &This->props, sizeof(*pProps));
 207     }
 208     LeaveCriticalSection(This->pCritSect);
 209
 210     return S_OK;
 211 }
 212
 213 static HRESULT WINAPI BaseMemAllocator_Commit(IMemAllocator * iface)
 214 {
 215     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 216     HRESULT hr;
 217
 218     TRACE("(%p)->()\n", This);
 219
 220     EnterCriticalSection(This->pCritSect);
 221     {
 222         if (!This->props.cbAlign)
 223             hr = VFW_E_BADALIGN;
 224         else if (!This->props.cbBuffer)
 225             hr = VFW_E_SIZENOTSET;
 226         else if (!This->props.cBuffers)
 227             hr = VFW_E_BUFFER_NOTSET;
 228         else if (This->bDecommitQueued && This->bCommitted)
 229         {
 230             This->bDecommitQueued = FALSE;
 231             hr = S_OK;
 232         }
 233         else if (This->bCommitted)
 234             hr = S_OK;
 235         else
 236         {
 237             if (!(This->hSemWaiting = CreateSemaphoreW(NULL, This->props.cBuffers, This->props.cBuffers, NULL)))
 238             {
 239                 ERR("Failed to create semaphore, error %lu.\n", GetLastError());
 240                 hr = HRESULT_FROM_WIN32(GetLastError());
 241             }
 242             else
 243             {
 244                 hr = This->fnAlloc(iface);
 245                 if (SUCCEEDED(hr))
 246                     This->bCommitted = TRUE;
 247                 else
 248                     ERR("Failed to allocate, hr %#lx.\n", hr);
 249             }
 250         }
 251     }
 252     LeaveCriticalSection(This->pCritSect);
 253
 254     return hr;
 255 }
 256
 257 static HRESULT WINAPI BaseMemAllocator_Decommit(IMemAllocator * iface)
 258 {
 259     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 260     HRESULT hr;
 261
 262     TRACE("(%p)->()\n", This);
 263
 264     EnterCriticalSection(This->pCritSect);
 265     {
 266         if (!This->bCommitted)
 267             hr = S_OK;
 268         else
 269         {
 270             if (!list_empty(&This->used_list))
 271             {
 272                 This->bDecommitQueued = TRUE;
 273                 /* notify ALL waiting threads that they cannot be allocated a buffer any more */
 274                 ReleaseSemaphore(This->hSemWaiting, This->lWaiting, NULL);
 275
 276                 hr = S_OK;
 277             }
 278             else
 279             {
 280                 if (This->lWaiting != 0)
 281                     ERR("Waiting: %ld\n", This->lWaiting);
 282
 283                 This->bCommitted = FALSE;
 284                 CloseHandle(This->hSemWaiting);
 285                 This->hSemWaiting = NULL;
 286
 287                 hr = This->fnFree(iface);
 288             }
 289         }
 290     }
 291     LeaveCriticalSection(This->pCritSect);
 292
 293     return hr;
 294 }
 295
 296 static HRESULT WINAPI BaseMemAllocator_GetBuffer(IMemAllocator * iface, IMediaSample ** pSample, REFERENCE_TIME *pStartTime, REFERENCE_TIME *pEndTime, DWORD dwFlags)
 297 {
 298     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 299     HRESULT hr = S_OK;
 300
 301     /* NOTE: The pStartTime and pEndTime parameters are not applied to the sample.
 302      * The allocator might use these values to determine which buffer it retrieves */
 303
 304     TRACE("allocator %p, sample %p, start_time %p, end_time %p, flags %#lx.\n",
 305             This, pSample, pStartTime, pEndTime, dwFlags);
 306
 307     *pSample = NULL;
 308
 309     EnterCriticalSection(This->pCritSect);
 310     if (!This->bCommitted || This->bDecommitQueued)
 311     {
 312         WARN("Not committed\n");
 313         hr = VFW_E_NOT_COMMITTED;
 314     }
 315     else
 316         ++This->lWaiting;
 317     LeaveCriticalSection(This->pCritSect);
 318     if (FAILED(hr))
 319         return hr;
 320
 321     if (WaitForSingleObject(This->hSemWaiting, (dwFlags & AM_GBF_NOWAIT) ? 0 : INFINITE) != WAIT_OBJECT_0)
 322     {
 323         EnterCriticalSection(This->pCritSect);
 324         --This->lWaiting;
 325         LeaveCriticalSection(This->pCritSect);
 326         WARN("Timed out\n");
 327         return VFW_E_TIMEOUT;
 328     }
 329
 330     EnterCriticalSection(This->pCritSect);
 331     {
 332         --This->lWaiting;
 333         if (!This->bCommitted)
 334             hr = VFW_E_NOT_COMMITTED;
 335         else if (This->bDecommitQueued)
 336             hr = VFW_E_TIMEOUT;
 337         else
 338         {
 339             StdMediaSample2 *ms;
 340             struct list * free = list_head(&This->free_list);
 341             list_remove(free);
 342             list_add_head(&This->used_list, free);
 343
 344             ms = LIST_ENTRY(free, StdMediaSample2, listentry);
 345             assert(ms->ref == 0);
 346             *pSample = (IMediaSample *)&ms->IMediaSample2_iface;
 347             IMediaSample_AddRef(*pSample);
 348         }
 349     }
 350     LeaveCriticalSection(This->pCritSect);
 351
 352     if (hr != S_OK)
 353         WARN("Returning hr %#lx.\n", hr);
 354     return hr;
 355 }
 356
 357 static HRESULT WINAPI BaseMemAllocator_ReleaseBuffer(IMemAllocator * iface, IMediaSample * pSample)
 358 {
 359     BaseMemAllocator *This = impl_from_IMemAllocator(iface);
 360     StdMediaSample2 * pStdSample = unsafe_impl_from_IMediaSample(pSample);
 361     HRESULT hr = S_OK;
 362
 363     TRACE("(%p)->(%p)\n", This, pSample);
 364
 365     /* FIXME: make sure that sample is currently on the used list */
 366
 367     /* FIXME: we should probably check the ref count on the sample before freeing
 368      * it to make sure that it is not still in use */
 369     EnterCriticalSection(This->pCritSect);
 370     {
 371         if (!This->bCommitted)
 372             ERR("Releasing a buffer when the allocator is not committed?!?\n");
 373
 374                 /* remove from used_list */
 375         list_remove(&pStdSample->listentry);
 376
 377         list_add_head(&This->free_list, &pStdSample->listentry);
 378
 379         if (list_empty(&This->used_list) && This->bDecommitQueued && This->bCommitted)
 380         {
 381             if (This->lWaiting != 0)
 382                 ERR("Waiting: %ld\n", This->lWaiting);
 383
 384             This->bCommitted = FALSE;
 385             This->bDecommitQueued = FALSE;
 386
 387             CloseHandle(This->hSemWaiting);
 388             This->hSemWaiting = NULL;
 389
 390             This->fnFree(iface);
 391         }
 392     }
 393     LeaveCriticalSection(This->pCritSect);
 394
 395     /* notify a waiting thread that there is now a free buffer */
 396     if (This->hSemWaiting && !ReleaseSemaphore(This->hSemWaiting, 1, NULL))
 397     {
 398         ERR("Failed to release semaphore, error %lu.\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)->IMediaSample2_iface.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)->media_time_valid = FALSE;
 437
 438     return S_OK;
 439 }
 440
 441 static void StdMediaSample2_Delete(StdMediaSample2 * This)
 442 {
 443     if (This->props.pMediaType)
 444         DeleteMediaType(This->props.pMediaType);
 445
 446     /* NOTE: does not remove itself from the list it belongs to */
 447     CoTaskMemFree(This);
 448 }
 449
 450 static inline StdMediaSample2 *impl_from_IMediaSample2(IMediaSample2 * iface)
 451 {
 452     return CONTAINING_RECORD(iface, StdMediaSample2, IMediaSample2_iface);
 453 }
 454
 455 static HRESULT WINAPI StdMediaSample2_QueryInterface(IMediaSample2 * iface, REFIID riid, void ** ppv)
 456 {
 457     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 458
 459     *ppv = NULL;
 460
 461     if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IMediaSample) ||
 462             IsEqualIID(riid, &IID_IMediaSample2))
 463     {
 464         *ppv = iface;
 465         IMediaSample2_AddRef(iface);
 466         return S_OK;
 467     }
 468
 469     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 470     return E_NOINTERFACE;
 471 }
 472
 473 static ULONG WINAPI StdMediaSample2_AddRef(IMediaSample2 * iface)
 474 {
 475     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 476     ULONG ref = InterlockedIncrement(&This->ref);
 477
 478     TRACE("%p increasing refcount to %lu.\n", This, ref);
 479
 480     return ref;
 481 }
 482
 483 static ULONG WINAPI StdMediaSample2_Release(IMediaSample2 * iface)
 484 {
 485     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 486     ULONG ref = InterlockedDecrement(&This->ref);
 487
 488     TRACE("%p decreasing refcount to %lu.\n", This, ref);
 489
 490     if (!ref)
 491     {
 492         if (This->props.pMediaType)
 493             DeleteMediaType(This->props.pMediaType);
 494         This->props.pMediaType = NULL;
 495         This->props.dwSampleFlags = 0;
 496         This->media_time_valid = FALSE;
 497
 498         if (This->pParent)
 499             IMemAllocator_ReleaseBuffer(This->pParent, (IMediaSample *)iface);
 500         else
 501             StdMediaSample2_Delete(This);
 502     }
 503     return ref;
 504 }
 505
 506 static HRESULT WINAPI StdMediaSample2_GetPointer(IMediaSample2 * iface, BYTE ** ppBuffer)
 507 {
 508     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 509
 510     TRACE("(%p)->(%p)\n", iface, ppBuffer);
 511
 512     *ppBuffer = This->props.pbBuffer;
 513
 514     if (!*ppBuffer)
 515     {
 516         ERR("Requested an unlocked surface and trying to lock regardless\n");
 517         return E_FAIL;
 518     }
 519
 520     return S_OK;
 521 }
 522
 523 static LONG WINAPI StdMediaSample2_GetSize(IMediaSample2 * iface)
 524 {
 525     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 526
 527     TRACE("StdMediaSample2_GetSize()\n");
 528
 529     return This->props.cbBuffer;
 530 }
 531
 532 static HRESULT WINAPI StdMediaSample2_GetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME * pEnd)
 533 {
 534     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 535     HRESULT hr;
 536
 537     TRACE("(%p)->(%p, %p)\n", iface, pStart, pEnd);
 538
 539     if (!(This->props.dwSampleFlags & AM_SAMPLE_TIMEVALID))
 540         hr = VFW_E_SAMPLE_TIME_NOT_SET;
 541     else if (!(This->props.dwSampleFlags & AM_SAMPLE_STOPVALID))
 542     {
 543         *pStart = This->props.tStart;
 544         *pEnd = This->props.tStart + 1;
 545
 546         hr = VFW_S_NO_STOP_TIME;
 547     }
 548     else
 549     {
 550         *pStart = This->props.tStart;
 551         *pEnd = This->props.tStop;
 552
 553         hr = S_OK;
 554     }
 555
 556     return hr;
 557 }
 558
 559 static HRESULT WINAPI StdMediaSample2_SetTime(IMediaSample2 *iface, REFERENCE_TIME *start, REFERENCE_TIME *end)
 560 {
 561     StdMediaSample2 *sample = impl_from_IMediaSample2(iface);
 562
 563     TRACE("sample %p, start %s, end %s.\n", sample, start ? debugstr_time(*start) : "(null)",
 564             end ? debugstr_time(*end) : "(null)");
 565
 566     if (start)
 567     {
 568         sample->props.tStart = *start;
 569         sample->props.dwSampleFlags |= AM_SAMPLE_TIMEVALID;
 570
 571         if (end)
 572         {
 573             sample->props.tStop = *end;
 574             sample->props.dwSampleFlags |= AM_SAMPLE_STOPVALID;
 575         }
 576         else
 577             sample->props.dwSampleFlags &= ~AM_SAMPLE_STOPVALID;
 578     }
 579     else
 580         sample->props.dwSampleFlags &= ~(AM_SAMPLE_TIMEVALID | AM_SAMPLE_STOPVALID);
 581
 582     return S_OK;
 583 }
 584
 585 static HRESULT WINAPI StdMediaSample2_IsSyncPoint(IMediaSample2 * iface)
 586 {
 587     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 588
 589     TRACE("(%p)->()\n", iface);
 590
 591     return (This->props.dwSampleFlags & AM_SAMPLE_SPLICEPOINT) ? S_OK : S_FALSE;
 592 }
 593
 594 static HRESULT WINAPI StdMediaSample2_SetSyncPoint(IMediaSample2 * iface, BOOL bIsSyncPoint)
 595 {
 596     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 597
 598     TRACE("(%p)->(%s)\n", iface, bIsSyncPoint ? "TRUE" : "FALSE");
 599
 600     if (bIsSyncPoint)
 601         This->props.dwSampleFlags |= AM_SAMPLE_SPLICEPOINT;
 602     else
 603         This->props.dwSampleFlags &= ~AM_SAMPLE_SPLICEPOINT;
 604
 605     return S_OK;
 606 }
 607
 608 static HRESULT WINAPI StdMediaSample2_IsPreroll(IMediaSample2 * iface)
 609 {
 610     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 611
 612     TRACE("(%p)->()\n", iface);
 613
 614     return (This->props.dwSampleFlags & AM_SAMPLE_PREROLL) ? S_OK : S_FALSE;
 615 }
 616
 617 static HRESULT WINAPI StdMediaSample2_SetPreroll(IMediaSample2 * iface, BOOL bIsPreroll)
 618 {
 619     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 620
 621     TRACE("(%p)->(%s)\n", iface, bIsPreroll ? "TRUE" : "FALSE");
 622
 623     if (bIsPreroll)
 624         This->props.dwSampleFlags |= AM_SAMPLE_PREROLL;
 625     else
 626         This->props.dwSampleFlags &= ~AM_SAMPLE_PREROLL;
 627
 628     return S_OK;
 629 }
 630
 631 static LONG WINAPI StdMediaSample2_GetActualDataLength(IMediaSample2 * iface)
 632 {
 633     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 634
 635     TRACE("(%p)->()\n", iface);
 636
 637     return This->props.lActual;
 638 }
 639
 640 static HRESULT WINAPI StdMediaSample2_SetActualDataLength(IMediaSample2 * iface, LONG len)
 641 {
 642     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 643
 644     TRACE("sample %p, len %ld.\n", This, len);
 645
 646     if ((len > This->props.cbBuffer) || (len < 0))
 647     {
 648         ERR("Length %ld exceeds maximum %ld.\n", len, This->props.cbBuffer);
 649         return VFW_E_BUFFER_OVERFLOW;
 650     }
 651     else
 652     {
 653         This->props.lActual = len;
 654         return S_OK;
 655     }
 656 }
 657
 658 static HRESULT WINAPI StdMediaSample2_GetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE ** ppMediaType)
 659 {
 660     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 661
 662     TRACE("(%p)->(%p)\n", iface, ppMediaType);
 663
 664     if (!This->props.pMediaType) {
 665         /* Make sure we return a NULL pointer (required by native Quartz dll) */
 666         if (ppMediaType)
 667             *ppMediaType = NULL;
 668         return S_FALSE;
 669     }
 670
 671     if (!(*ppMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
 672         return E_OUTOFMEMORY;
 673
 674     return CopyMediaType(*ppMediaType, This->props.pMediaType);
 675 }
 676
 677 static HRESULT WINAPI StdMediaSample2_SetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE * pMediaType)
 678 {
 679     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 680
 681     TRACE("(%p)->(%p)\n", iface, pMediaType);
 682
 683     if (This->props.pMediaType)
 684     {
 685         DeleteMediaType(This->props.pMediaType);
 686         This->props.pMediaType = NULL;
 687     }
 688
 689     if (!pMediaType)
 690     {
 691         This->props.dwSampleFlags &= ~AM_SAMPLE_TYPECHANGED;
 692         return S_OK;
 693     }
 694
 695     This->props.dwSampleFlags |= AM_SAMPLE_TYPECHANGED;
 696
 697     if (!(This->props.pMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
 698         return E_OUTOFMEMORY;
 699
 700     return CopyMediaType(This->props.pMediaType, pMediaType);
 701 }
 702
 703 static HRESULT WINAPI StdMediaSample2_IsDiscontinuity(IMediaSample2 * iface)
 704 {
 705     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 706
 707     TRACE("(%p)->()\n", iface);
 708
 709     return (This->props.dwSampleFlags & AM_SAMPLE_DATADISCONTINUITY) ? S_OK : S_FALSE;
 710 }
 711
 712 static HRESULT WINAPI StdMediaSample2_SetDiscontinuity(IMediaSample2 * iface, BOOL bIsDiscontinuity)
 713 {
 714     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 715
 716     TRACE("(%p)->(%s)\n", iface, bIsDiscontinuity ? "TRUE" : "FALSE");
 717
 718     if (bIsDiscontinuity)
 719         This->props.dwSampleFlags |= AM_SAMPLE_DATADISCONTINUITY;
 720     else
 721         This->props.dwSampleFlags &= ~AM_SAMPLE_DATADISCONTINUITY;
 722
 723     return S_OK;
 724 }
 725
 726 static HRESULT WINAPI StdMediaSample2_GetMediaTime(IMediaSample2 * iface, LONGLONG * pStart, LONGLONG * pEnd)
 727 {
 728     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 729
 730     TRACE("(%p)->(%p, %p)\n", iface, pStart, pEnd);
 731
 732     if (!This->media_time_valid)
 733         return VFW_E_MEDIA_TIME_NOT_SET;
 734
 735     *pStart = This->tMediaStart;
 736     *pEnd = This->tMediaEnd;
 737
 738     return S_OK;
 739 }
 740
 741 static HRESULT WINAPI StdMediaSample2_SetMediaTime(IMediaSample2 *iface, LONGLONG *start, LONGLONG *end)
 742 {
 743     StdMediaSample2 *sample = impl_from_IMediaSample2(iface);
 744
 745     TRACE("sample %p, start %s, end %s.\n", sample, start ? debugstr_time(*start) : "(null)",
 746             end ? debugstr_time(*end) : "(null)");
 747
 748     if (start)
 749     {
 750         if (!end) return E_POINTER;
 751         sample->tMediaStart = *start;
 752         sample->tMediaEnd = *end;
 753         sample->media_time_valid = TRUE;
 754     }
 755     else
 756         sample->media_time_valid = FALSE;
 757
 758     return S_OK;
 759 }
 760
 761 static HRESULT WINAPI StdMediaSample2_GetProperties(IMediaSample2 * iface, DWORD cbProperties, BYTE * pbProperties)
 762 {
 763     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 764
 765     TRACE("sample %p, size %lu, properties %p.\n", This, cbProperties, pbProperties);
 766
 767     memcpy(pbProperties, &This->props, min(cbProperties, sizeof(This->props)));
 768
 769     return S_OK;
 770 }
 771
 772 static HRESULT WINAPI StdMediaSample2_SetProperties(IMediaSample2 * iface, DWORD cbProperties, const BYTE * pbProperties)
 773 {
 774     StdMediaSample2 *This = impl_from_IMediaSample2(iface);
 775
 776     TRACE("sample %p, size %lu, properties %p.\n", This, cbProperties, pbProperties);
 777
 778     /* NOTE: pbBuffer and cbBuffer are read-only */
 779     memcpy(&This->props, pbProperties, min(cbProperties, AM_SAMPLE2_PROP_SIZE_WRITABLE));
 780
 781     return S_OK;
 782 }
 783
 784 static const IMediaSample2Vtbl StdMediaSample2_VTable =
 785 {
 786     StdMediaSample2_QueryInterface,
 787     StdMediaSample2_AddRef,
 788     StdMediaSample2_Release,
 789     StdMediaSample2_GetPointer,
 790     StdMediaSample2_GetSize,
 791     StdMediaSample2_GetTime,
 792     StdMediaSample2_SetTime,
 793     StdMediaSample2_IsSyncPoint,
 794     StdMediaSample2_SetSyncPoint,
 795     StdMediaSample2_IsPreroll,
 796     StdMediaSample2_SetPreroll,
 797     StdMediaSample2_GetActualDataLength,
 798     StdMediaSample2_SetActualDataLength,
 799     StdMediaSample2_GetMediaType,
 800     StdMediaSample2_SetMediaType,
 801     StdMediaSample2_IsDiscontinuity,
 802     StdMediaSample2_SetDiscontinuity,
 803     StdMediaSample2_GetMediaTime,
 804     StdMediaSample2_SetMediaTime,
 805     StdMediaSample2_GetProperties,
 806     StdMediaSample2_SetProperties
 807 };
 808
 809 static inline StdMediaSample2 *unsafe_impl_from_IMediaSample(IMediaSample * iface)
 810 {
 811     IMediaSample2 *iface2 = (IMediaSample2 *)iface;
 812
 813     if (!iface)
 814         return NULL;
 815     assert(iface2->lpVtbl == &StdMediaSample2_VTable);
 816     return impl_from_IMediaSample2(iface2);
 817 }
 818
 819 typedef struct StdMemAllocator
 820 {
 821     BaseMemAllocator base;
 822     CRITICAL_SECTION csState;
 823     LPVOID pMemory;
 824 } StdMemAllocator;
 825
 826 static inline StdMemAllocator *StdMemAllocator_from_IMemAllocator(IMemAllocator * iface)
 827 {
 828     return CONTAINING_RECORD(iface, StdMemAllocator, base.IMemAllocator_iface);
 829 }
 830
 831 static HRESULT StdMemAllocator_Alloc(IMemAllocator * iface)
 832 {
 833     StdMemAllocator *This = StdMemAllocator_from_IMemAllocator(iface);
 834     StdMediaSample2 * pSample = NULL;
 835     SYSTEM_INFO si;
 836     LONG i;
 837
 838     assert(list_empty(&This->base.free_list));
 839
 840     /* check alignment */
 841     GetSystemInfo(&si);
 842
 843     /* we do not allow a courser alignment than the OS page size */
 844     if ((si.dwPageSize % This->base.props.cbAlign) != 0)
 845         return VFW_E_BADALIGN;
 846
 847     /* FIXME: each sample has to have its buffer start on the right alignment.
 848      * We don't do this at the moment */
 849
 850     /* allocate memory */
 851     This->pMemory = VirtualAlloc(NULL, (This->base.props.cbBuffer + This->base.props.cbPrefix) * This->base.props.cBuffers, MEM_COMMIT, PAGE_READWRITE);
 852
 853     if (!This->pMemory)
 854         return E_OUTOFMEMORY;
 855
 856     for (i = This->base.props.cBuffers - 1; i >= 0; i--)
 857     {
 858         /* pbBuffer does not start at the base address, it starts at base + cbPrefix */
 859         BYTE * pbBuffer = (BYTE *)This->pMemory + i * (This->base.props.cbBuffer + This->base.props.cbPrefix) + This->base.props.cbPrefix;
 860
 861         StdMediaSample2_Construct(pbBuffer, This->base.props.cbBuffer, iface, &pSample);
 862
 863         list_add_head(&This->base.free_list, &pSample->listentry);
 864     }
 865
 866     return S_OK;
 867 }
 868
 869 static HRESULT StdMemAllocator_Free(IMemAllocator * iface)
 870 {
 871     StdMemAllocator *This = StdMemAllocator_from_IMemAllocator(iface);
 872     struct list * cursor;
 873
 874     if (!list_empty(&This->base.used_list))
 875     {
 876         WARN("Freeing allocator with outstanding samples!\n");
 877         while ((cursor = list_head(&This->base.used_list)) != NULL)
 878         {
 879             StdMediaSample2 *pSample;
 880             list_remove(cursor);
 881             pSample = LIST_ENTRY(cursor, StdMediaSample2, listentry);
 882             pSample->pParent = NULL;
 883         }
 884     }
 885
 886     while ((cursor = list_head(&This->base.free_list)) != NULL)
 887     {
 888         list_remove(cursor);
 889         StdMediaSample2_Delete(LIST_ENTRY(cursor, StdMediaSample2, listentry));
 890     }
 891
 892     /* free memory */
 893     if (!VirtualFree(This->pMemory, 0, MEM_RELEASE))
 894     {
 895         ERR("Failed to free memory, error %lu.\n", GetLastError());
 896         return HRESULT_FROM_WIN32(GetLastError());
 897     }
 898
 899     return S_OK;
 900 }
 901
 902 static void StdMemAllocator_Destroy(IMemAllocator *iface)
 903 {
 904     StdMemAllocator *This = StdMemAllocator_from_IMemAllocator(iface);
 905
 906     This->csState.DebugInfo->Spare[0] = 0;
 907     DeleteCriticalSection(&This->csState);
 908
 909     CoTaskMemFree(This);
 910 }
 911
 912 HRESULT mem_allocator_create(IUnknown *lpUnkOuter, IUnknown **out)
 913 {
 914     StdMemAllocator * pMemAlloc;
 915     HRESULT hr;
 916
 917     if (lpUnkOuter)
 918         return CLASS_E_NOAGGREGATION;
 919
 920     if (!(pMemAlloc = CoTaskMemAlloc(sizeof(*pMemAlloc))))
 921         return E_OUTOFMEMORY;
 922
 923     InitializeCriticalSection(&pMemAlloc->csState);
 924     pMemAlloc->csState.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": StdMemAllocator.csState");
 925
 926     pMemAlloc->pMemory = NULL;
 927
 928     if (SUCCEEDED(hr = BaseMemAllocator_Init(StdMemAllocator_Alloc, StdMemAllocator_Free, NULL, NULL, NULL, StdMemAllocator_Destroy, &pMemAlloc->csState, &pMemAlloc->base)))
 929         *out = (IUnknown *)&pMemAlloc->base.IMemAllocator_iface;
 930     else
 931         CoTaskMemFree(pMemAlloc);
 932
 933     return hr;
 934 }