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 BaseMemAllocator
  35 {
  36     const IMemAllocatorVtbl * lpVtbl;
  37
  38     LONG ref;
  39     ALLOCATOR_PROPERTIES props;
  40     HRESULT (* fnAlloc) (IMemAllocator *);
  41     HRESULT (* fnFree)(IMemAllocator *);
  42     HRESULT (* fnVerify)(IMemAllocator *, ALLOCATOR_PROPERTIES *);
  43     HRESULT (* fnBufferPrepare)(IMemAllocator *, StdMediaSample2 *, DWORD flags);
  44     HRESULT (* fnBufferReleased)(IMemAllocator *, StdMediaSample2 *);
  45     void (* fnDestroyed)(IMemAllocator *);
  46     HANDLE hSemWaiting;
  47     BOOL bDecommitQueued;
  48     BOOL bCommitted;
  49     LONG lWaiting;
  50     struct list free_list;
  51     struct list used_list;
  52     CRITICAL_SECTION *pCritSect;
  53 } BaseMemAllocator;
  54
  55 static const IMemAllocatorVtbl BaseMemAllocator_VTable;
  56 static const IMediaSample2Vtbl StdMediaSample2_VTable;
  57
  58 #define AM_SAMPLE2_PROP_SIZE_WRITABLE FIELD_OFFSET(AM_SAMPLE2_PROPERTIES, pbBuffer)
  59
  60 #define INVALID_MEDIA_TIME (((ULONGLONG)0x7fffffff << 32) | 0xffffffff)
  61
  62 static HRESULT BaseMemAllocator_Init(HRESULT (* fnAlloc)(IMemAllocator *),
  63                                      HRESULT (* fnFree)(IMemAllocator *),
  64                                      HRESULT (* fnVerify)(IMemAllocator *, ALLOCATOR_PROPERTIES *),
  65                                      HRESULT (* fnBufferPrepare)(IMemAllocator *, StdMediaSample2 *, DWORD),
  66                                      HRESULT (* fnBufferReleased)(IMemAllocator *, StdMediaSample2 *),
  67                                      void (* fnDestroyed)(IMemAllocator *),
  68                                      CRITICAL_SECTION *pCritSect,
  69                                      BaseMemAllocator * pMemAlloc)
  70 {
  71     assert(fnAlloc && fnFree && fnDestroyed);
  72
  73     pMemAlloc->lpVtbl = &BaseMemAllocator_VTable;
  74
  75     pMemAlloc->ref = 1;
  76     ZeroMemory(&pMemAlloc->props, sizeof(pMemAlloc->props));
  77     list_init(&pMemAlloc->free_list);
  78     list_init(&pMemAlloc->used_list);
  79     pMemAlloc->fnAlloc = fnAlloc;
  80     pMemAlloc->fnFree = fnFree;
  81     pMemAlloc->fnVerify = fnVerify;
  82     pMemAlloc->fnBufferPrepare = fnBufferPrepare;
  83     pMemAlloc->fnBufferReleased = fnBufferReleased;
  84     pMemAlloc->fnDestroyed = fnDestroyed;
  85     pMemAlloc->bDecommitQueued = FALSE;
  86     pMemAlloc->bCommitted = FALSE;
  87     pMemAlloc->hSemWaiting = NULL;
  88     pMemAlloc->lWaiting = 0;
  89     pMemAlloc->pCritSect = pCritSect;
  90
  91     return S_OK;
  92 }
  93
  94 static HRESULT WINAPI BaseMemAllocator_QueryInterface(IMemAllocator * iface, REFIID riid, LPVOID * ppv)
  95 {
  96     BaseMemAllocator *This = (BaseMemAllocator *)iface;
  97     TRACE("(%p)->(%s, %p)\n", This, qzdebugstr_guid(riid), ppv);
  98
  99     *ppv = NULL;
 100
 101     if (IsEqualIID(riid, &IID_IUnknown))
 102         *ppv = This;
 103     else if (IsEqualIID(riid, &IID_IMemAllocator))
 104         *ppv = This;
 105
 106     if (*ppv)
 107     {
 108         IUnknown_AddRef((IUnknown *)(*ppv));
 109         return S_OK;
 110     }
 111
 112     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 113
 114     return E_NOINTERFACE;
 115 }
 116
 117 static ULONG WINAPI BaseMemAllocator_AddRef(IMemAllocator * iface)
 118 {
 119     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 120     ULONG ref = InterlockedIncrement(&This->ref);
 121
 122     TRACE("(%p)->() AddRef from %d\n", iface, ref - 1);
 123
 124     return ref;
 125 }
 126
 127 static ULONG WINAPI BaseMemAllocator_Release(IMemAllocator * iface)
 128 {
 129     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 130     ULONG ref = InterlockedDecrement(&This->ref);
 131
 132     TRACE("(%p)->() Release from %d\n", iface, ref + 1);
 133
 134     if (!ref)
 135     {
 136         CloseHandle(This->hSemWaiting);
 137         if (This->bCommitted)
 138             This->fnFree(iface);
 139
 140         This->fnDestroyed(iface);
 141         return 0;
 142     }
 143     return ref;
 144 }
 145
 146 static HRESULT WINAPI BaseMemAllocator_SetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pRequest, ALLOCATOR_PROPERTIES *pActual)
 147 {
 148     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 149     HRESULT hr;
 150
 151     TRACE("(%p)->(%p, %p)\n", This, pRequest, pActual);
 152
 153     EnterCriticalSection(This->pCritSect);
 154     {
 155         if (!list_empty(&This->used_list))
 156             hr = VFW_E_BUFFERS_OUTSTANDING;
 157         else if (This->bCommitted)
 158             hr = VFW_E_ALREADY_COMMITTED;
 159         else if (pRequest->cbAlign == 0)
 160             hr = VFW_E_BADALIGN;
 161         else
 162         {
 163             if (This->fnVerify)
 164                  hr = This->fnVerify(iface, pRequest);
 165             else
 166                  hr = S_OK;
 167
 168             if (SUCCEEDED(hr))
 169                  This->props = *pRequest;
 170
 171             *pActual = This->props;
 172         }
 173     }
 174     LeaveCriticalSection(This->pCritSect);
 175
 176     return hr;
 177 }
 178
 179 static HRESULT WINAPI BaseMemAllocator_GetProperties(IMemAllocator * iface, ALLOCATOR_PROPERTIES *pProps)
 180 {
 181     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 182     HRESULT hr = S_OK;
 183
 184     TRACE("(%p)->(%p)\n", This, pProps);
 185
 186     EnterCriticalSection(This->pCritSect);
 187     {
 188          memcpy(pProps, &This->props, sizeof(*pProps));
 189     }
 190     LeaveCriticalSection(This->pCritSect);
 191
 192     return hr;
 193 }
 194
 195 static HRESULT WINAPI BaseMemAllocator_Commit(IMemAllocator * iface)
 196 {
 197     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 198     HRESULT hr;
 199
 200     TRACE("(%p)->()\n", This);
 201
 202     EnterCriticalSection(This->pCritSect);
 203     {
 204         if (!This->props.cbAlign)
 205             hr = VFW_E_BADALIGN;
 206         else if (!This->props.cbBuffer)
 207             hr = VFW_E_SIZENOTSET;
 208         else if (!This->props.cBuffers)
 209             hr = VFW_E_BUFFER_NOTSET;
 210         else if (This->bDecommitQueued && This->bCommitted)
 211         {
 212             This->bDecommitQueued = FALSE;
 213             hr = S_OK;
 214         }
 215         else if (This->bCommitted)
 216             hr = S_OK;
 217         else
 218         {
 219             if (!(This->hSemWaiting = CreateSemaphoreW(NULL, This->props.cBuffers, This->props.cBuffers, NULL)))
 220             {
 221                 ERR("Couldn't create semaphore (error was %u)\n", GetLastError());
 222                 hr = HRESULT_FROM_WIN32(GetLastError());
 223             }
 224             else
 225             {
 226                 hr = This->fnAlloc(iface);
 227                 if (SUCCEEDED(hr))
 228                     This->bCommitted = TRUE;
 229                 else
 230                     ERR("fnAlloc failed with error 0x%x\n", hr);
 231             }
 232         }
 233     }
 234     LeaveCriticalSection(This->pCritSect);
 235
 236     return hr;
 237 }
 238
 239 static HRESULT WINAPI BaseMemAllocator_Decommit(IMemAllocator * iface)
 240 {
 241     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 242     HRESULT hr;
 243
 244     TRACE("(%p)->()\n", This);
 245
 246     EnterCriticalSection(This->pCritSect);
 247     {
 248         if (!This->bCommitted)
 249             hr = S_OK;
 250         else
 251         {
 252             if (!list_empty(&This->used_list))
 253             {
 254                 This->bDecommitQueued = TRUE;
 255                 /* notify ALL waiting threads that they cannot be allocated a buffer any more */
 256                 ReleaseSemaphore(This->hSemWaiting, This->lWaiting, NULL);
 257
 258                 hr = S_OK;
 259             }
 260             else
 261             {
 262                 if (This->lWaiting != 0)
 263                     ERR("Waiting: %d\n", This->lWaiting);
 264
 265                 This->bCommitted = FALSE;
 266                 CloseHandle(This->hSemWaiting);
 267                 This->hSemWaiting = NULL;
 268
 269                 hr = This->fnFree(iface);
 270                 if (FAILED(hr))
 271                     ERR("fnFree failed with error 0x%x\n", hr);
 272             }
 273         }
 274     }
 275     LeaveCriticalSection(This->pCritSect);
 276
 277     return hr;
 278 }
 279
 280 static HRESULT WINAPI BaseMemAllocator_GetBuffer(IMemAllocator * iface, IMediaSample ** pSample, REFERENCE_TIME *pStartTime, REFERENCE_TIME *pEndTime, DWORD dwFlags)
 281 {
 282     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 283     HRESULT hr = S_OK;
 284
 285     /* NOTE: The pStartTime and pEndTime parameters are not applied to the sample.
 286      * The allocator might use these values to determine which buffer it retrieves */
 287
 288     TRACE("(%p)->(%p, %p, %p, %x)\n", This, pSample, pStartTime, pEndTime, dwFlags);
 289
 290     *pSample = NULL;
 291
 292     EnterCriticalSection(This->pCritSect);
 293     if (!This->bCommitted || This->bDecommitQueued)
 294     {
 295         WARN("Not committed\n");
 296         hr = VFW_E_NOT_COMMITTED;
 297     }
 298     else
 299         ++This->lWaiting;
 300     LeaveCriticalSection(This->pCritSect);
 301     if (FAILED(hr))
 302         return hr;
 303
 304     if (WaitForSingleObject(This->hSemWaiting, (dwFlags & AM_GBF_NOWAIT) ? 0 : INFINITE) != WAIT_OBJECT_0)
 305     {
 306         EnterCriticalSection(This->pCritSect);
 307         --This->lWaiting;
 308         LeaveCriticalSection(This->pCritSect);
 309         WARN("Timed out\n");
 310         return VFW_E_TIMEOUT;
 311     }
 312
 313     EnterCriticalSection(This->pCritSect);
 314     {
 315         --This->lWaiting;
 316         if (!This->bCommitted)
 317             hr = VFW_E_NOT_COMMITTED;
 318         else if (This->bDecommitQueued)
 319             hr = VFW_E_TIMEOUT;
 320         else
 321         {
 322             struct list * free = list_head(&This->free_list);
 323             list_remove(free);
 324             list_add_head(&This->used_list, free);
 325
 326             *pSample = (IMediaSample *)LIST_ENTRY(free, StdMediaSample2, listentry);
 327
 328             assert(((StdMediaSample2 *)*pSample)->ref == 0);
 329
 330             IMediaSample_AddRef(*pSample);
 331         }
 332     }
 333     LeaveCriticalSection(This->pCritSect);
 334
 335     if (hr != S_OK)
 336         WARN("%08x\n", hr);
 337     return hr;
 338 }
 339
 340 static HRESULT WINAPI BaseMemAllocator_ReleaseBuffer(IMemAllocator * iface, IMediaSample * pSample)
 341 {
 342     BaseMemAllocator *This = (BaseMemAllocator *)iface;
 343     StdMediaSample2 * pStdSample = (StdMediaSample2 *)pSample;
 344     HRESULT hr = S_OK;
 345
 346     TRACE("(%p)->(%p)\n", This, pSample);
 347
 348     /* FIXME: make sure that sample is currently on the used list */
 349
 350     /* FIXME: we should probably check the ref count on the sample before freeing
 351      * it to make sure that it is not still in use */
 352     EnterCriticalSection(This->pCritSect);
 353     {
 354         if (!This->bCommitted)
 355             ERR("Releasing a buffer when the allocator is not committed?!?\n");
 356
 357                 /* remove from used_list */
 358         list_remove(&pStdSample->listentry);
 359
 360         list_add_head(&This->free_list, &pStdSample->listentry);
 361
 362         if (list_empty(&This->used_list) && This->bDecommitQueued && This->bCommitted)
 363         {
 364             HRESULT hrfree;
 365
 366             if (This->lWaiting != 0)
 367                 ERR("Waiting: %d\n", This->lWaiting);
 368
 369             This->bCommitted = FALSE;
 370             This->bDecommitQueued = FALSE;
 371
 372             CloseHandle(This->hSemWaiting);
 373             This->hSemWaiting = NULL;
 374
 375             if (FAILED(hrfree = This->fnFree(iface)))
 376                 ERR("fnFree failed with error 0x%x\n", hrfree);
 377         }
 378     }
 379     LeaveCriticalSection(This->pCritSect);
 380
 381     /* notify a waiting thread that there is now a free buffer */
 382     if (This->hSemWaiting && !ReleaseSemaphore(This->hSemWaiting, 1, NULL))
 383     {
 384         ERR("ReleaseSemaphore failed with error %u\n", GetLastError());
 385         hr = HRESULT_FROM_WIN32(GetLastError());
 386     }
 387
 388     return hr;
 389 }
 390
 391 static const IMemAllocatorVtbl BaseMemAllocator_VTable =
 392 {
 393     BaseMemAllocator_QueryInterface,
 394     BaseMemAllocator_AddRef,
 395     BaseMemAllocator_Release,
 396     BaseMemAllocator_SetProperties,
 397     BaseMemAllocator_GetProperties,
 398     BaseMemAllocator_Commit,
 399     BaseMemAllocator_Decommit,
 400     BaseMemAllocator_GetBuffer,
 401     BaseMemAllocator_ReleaseBuffer
 402 };
 403
 404 static HRESULT StdMediaSample2_Construct(BYTE * pbBuffer, LONG cbBuffer, IMemAllocator * pParent, StdMediaSample2 ** ppSample)
 405 {
 406     assert(pbBuffer && pParent && (cbBuffer > 0));
 407
 408     if (!(*ppSample = CoTaskMemAlloc(sizeof(StdMediaSample2))))
 409         return E_OUTOFMEMORY;
 410
 411     (*ppSample)->lpvtbl = &StdMediaSample2_VTable;
 412     (*ppSample)->ref = 0;
 413     ZeroMemory(&(*ppSample)->props, sizeof((*ppSample)->props));
 414
 415     /* NOTE: no need to AddRef as the parent is guaranteed to be around
 416      * at least as long as us and we don't want to create circular
 417      * dependencies on the ref count */
 418     (*ppSample)->pParent = pParent;
 419     (*ppSample)->props.cbData = sizeof(AM_SAMPLE2_PROPERTIES);
 420     (*ppSample)->props.cbBuffer = (*ppSample)->props.lActual = cbBuffer;
 421     (*ppSample)->props.pbBuffer = pbBuffer;
 422     (*ppSample)->tMediaStart = INVALID_MEDIA_TIME;
 423     (*ppSample)->tMediaEnd = 0;
 424
 425     return S_OK;
 426 }
 427
 428 static void StdMediaSample2_Delete(StdMediaSample2 * This)
 429 {
 430     /* NOTE: does not remove itself from the list it belongs to */
 431     CoTaskMemFree(This);
 432 }
 433
 434 static HRESULT WINAPI StdMediaSample2_QueryInterface(IMediaSample2 * iface, REFIID riid, LPVOID * ppv)
 435 {
 436     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 437     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 438
 439     *ppv = NULL;
 440
 441     if (IsEqualIID(riid, &IID_IUnknown))
 442         *ppv = This;
 443     else if (IsEqualIID(riid, &IID_IMediaSample))
 444         *ppv = This;
 445     else if (IsEqualIID(riid, &IID_IMediaSample2))
 446         *ppv = This;
 447
 448     if (*ppv)
 449     {
 450         IUnknown_AddRef((IUnknown *)(*ppv));
 451         return S_OK;
 452     }
 453
 454     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 455
 456     return E_NOINTERFACE;
 457 }
 458
 459 static ULONG WINAPI StdMediaSample2_AddRef(IMediaSample2 * iface)
 460 {
 461     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 462     ULONG ref = InterlockedIncrement(&This->ref);
 463
 464     TRACE("(%p)->() AddRef from %d\n", iface, ref - 1);
 465
 466     return ref;
 467 }
 468
 469 static ULONG WINAPI StdMediaSample2_Release(IMediaSample2 * iface)
 470 {
 471     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 472     ULONG ref = InterlockedDecrement(&This->ref);
 473
 474     TRACE("(%p)->() Release from %d\n", iface, ref + 1);
 475
 476     if (!ref)
 477     {
 478         if (This->pParent)
 479             IMemAllocator_ReleaseBuffer(This->pParent, (IMediaSample *)iface);
 480         else
 481             StdMediaSample2_Delete(This);
 482         return 0;
 483     }
 484     return ref;
 485 }
 486
 487 static HRESULT WINAPI StdMediaSample2_GetPointer(IMediaSample2 * iface, BYTE ** ppBuffer)
 488 {
 489     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 490
 491     TRACE("(%p)->(%p)\n", iface, ppBuffer);
 492
 493     *ppBuffer = This->props.pbBuffer;
 494
 495     if (!*ppBuffer)
 496     {
 497         ERR("Requested an unlocked surface and trying to lock regardless\n");
 498         return E_FAIL;
 499     }
 500
 501     return S_OK;
 502 }
 503
 504 static LONG WINAPI StdMediaSample2_GetSize(IMediaSample2 * iface)
 505 {
 506     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 507
 508     TRACE("StdMediaSample2_GetSize()\n");
 509
 510     return This->props.cbBuffer;
 511 }
 512
 513 static HRESULT WINAPI StdMediaSample2_GetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME * pEnd)
 514 {
 515     HRESULT hr;
 516     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 517
 518     TRACE("(%p)->(%p, %p)\n", iface, pStart, pEnd);
 519
 520     if (!(This->props.dwSampleFlags & AM_SAMPLE_TIMEVALID))
 521         hr = VFW_E_SAMPLE_TIME_NOT_SET;
 522     else if (!(This->props.dwSampleFlags & AM_SAMPLE_STOPVALID))
 523     {
 524         *pStart = This->props.tStart;
 525         *pEnd = This->props.tStart + 1;
 526
 527         hr = VFW_S_NO_STOP_TIME;
 528     }
 529     else
 530     {
 531         *pStart = This->props.tStart;
 532         *pEnd = This->props.tStop;
 533
 534         hr = S_OK;
 535     }
 536
 537     return hr;
 538 }
 539
 540 static HRESULT WINAPI StdMediaSample2_SetTime(IMediaSample2 * iface, REFERENCE_TIME * pStart, REFERENCE_TIME * pEnd)
 541 {
 542     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 543
 544     TRACE("(%p)->(%p, %p)\n", iface, pStart, pEnd);
 545
 546     if (pStart)
 547     {
 548         This->props.tStart = *pStart;
 549         This->props.dwSampleFlags |= AM_SAMPLE_TIMEVALID;
 550     }
 551     else
 552         This->props.dwSampleFlags &= ~AM_SAMPLE_TIMEVALID;
 553
 554     if (pEnd)
 555     {
 556         This->props.tStop = *pEnd;
 557         This->props.dwSampleFlags |= AM_SAMPLE_STOPVALID;
 558     }
 559     else
 560         This->props.dwSampleFlags &= ~AM_SAMPLE_STOPVALID;
 561
 562     return S_OK;
 563 }
 564
 565 static HRESULT WINAPI StdMediaSample2_IsSyncPoint(IMediaSample2 * iface)
 566 {
 567     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 568
 569     TRACE("(%p)->()\n", iface);
 570
 571     return (This->props.dwSampleFlags & AM_SAMPLE_SPLICEPOINT) ? S_OK : S_FALSE;
 572 }
 573
 574 static HRESULT WINAPI StdMediaSample2_SetSyncPoint(IMediaSample2 * iface, BOOL bIsSyncPoint)
 575 {
 576     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 577
 578     TRACE("(%p)->(%s)\n", iface, bIsSyncPoint ? "TRUE" : "FALSE");
 579
 580     if (bIsSyncPoint)
 581         This->props.dwSampleFlags |= AM_SAMPLE_SPLICEPOINT;
 582     else
 583         This->props.dwSampleFlags &= ~AM_SAMPLE_SPLICEPOINT;
 584
 585     return S_OK;
 586 }
 587
 588 static HRESULT WINAPI StdMediaSample2_IsPreroll(IMediaSample2 * iface)
 589 {
 590     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 591
 592     TRACE("(%p)->()\n", iface);
 593
 594     return (This->props.dwSampleFlags & AM_SAMPLE_PREROLL) ? S_OK : S_FALSE;
 595 }
 596
 597 static HRESULT WINAPI StdMediaSample2_SetPreroll(IMediaSample2 * iface, BOOL bIsPreroll)
 598 {
 599     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 600
 601     TRACE("(%p)->(%s)\n", iface, bIsPreroll ? "TRUE" : "FALSE");
 602
 603     if (bIsPreroll)
 604         This->props.dwSampleFlags |= AM_SAMPLE_PREROLL;
 605     else
 606         This->props.dwSampleFlags &= ~AM_SAMPLE_PREROLL;
 607
 608     return S_OK;
 609 }
 610
 611 static LONG WINAPI StdMediaSample2_GetActualDataLength(IMediaSample2 * iface)
 612 {
 613     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 614
 615     TRACE("(%p)->()\n", iface);
 616
 617     return This->props.lActual;
 618 }
 619
 620 static HRESULT WINAPI StdMediaSample2_SetActualDataLength(IMediaSample2 * iface, LONG len)
 621 {
 622     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 623
 624     TRACE("(%p)->(%d)\n", iface, len);
 625
 626     if ((len > This->props.cbBuffer) || (len < 0))
 627     {
 628         WARN("Tried to set length to %d, while max is %d\n", len, This->props.cbBuffer);
 629         return VFW_E_BUFFER_OVERFLOW;
 630     }
 631     else
 632     {
 633         This->props.lActual = len;
 634         return S_OK;
 635     }
 636 }
 637
 638 static HRESULT WINAPI StdMediaSample2_GetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE ** ppMediaType)
 639 {
 640     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 641
 642     TRACE("(%p)->(%p)\n", iface, ppMediaType);
 643
 644     if (!This->props.pMediaType) {
 645         /* Make sure we return a NULL pointer (required by native Quartz dll) */
 646         if (ppMediaType)
 647             *ppMediaType = NULL;
 648         return S_FALSE;
 649     }
 650
 651     if (!(*ppMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
 652         return E_OUTOFMEMORY;
 653
 654     return CopyMediaType(*ppMediaType, This->props.pMediaType);
 655 }
 656
 657 static HRESULT WINAPI StdMediaSample2_SetMediaType(IMediaSample2 * iface, AM_MEDIA_TYPE * pMediaType)
 658 {
 659     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 660
 661     TRACE("(%p)->(%p)\n", iface, pMediaType);
 662
 663     if (This->props.pMediaType)
 664         FreeMediaType(This->props.pMediaType);
 665     else if (!(This->props.pMediaType = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE))))
 666         return E_OUTOFMEMORY;
 667
 668     return CopyMediaType(This->props.pMediaType, pMediaType);
 669 }
 670
 671 static HRESULT WINAPI StdMediaSample2_IsDiscontinuity(IMediaSample2 * iface)
 672 {
 673     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 674
 675     TRACE("(%p)->()\n", iface);
 676
 677     return (This->props.dwSampleFlags & AM_SAMPLE_DATADISCONTINUITY) ? S_OK : S_FALSE;
 678 }
 679
 680 static HRESULT WINAPI StdMediaSample2_SetDiscontinuity(IMediaSample2 * iface, BOOL bIsDiscontinuity)
 681 {
 682     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 683
 684     TRACE("(%p)->(%s)\n", iface, bIsDiscontinuity ? "TRUE" : "FALSE");
 685
 686     if (bIsDiscontinuity)
 687         This->props.dwSampleFlags |= AM_SAMPLE_DATADISCONTINUITY;
 688     else
 689         This->props.dwSampleFlags &= ~AM_SAMPLE_DATADISCONTINUITY;
 690
 691     return S_OK;
 692 }
 693
 694 static HRESULT WINAPI StdMediaSample2_GetMediaTime(IMediaSample2 * iface, LONGLONG * pStart, LONGLONG * pEnd)
 695 {
 696     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 697
 698     TRACE("(%p)->(%p, %p)\n", iface, pStart, pEnd);
 699
 700     if (This->tMediaStart == INVALID_MEDIA_TIME)
 701         return VFW_E_MEDIA_TIME_NOT_SET;
 702
 703     *pStart = This->tMediaStart;
 704     *pEnd = This->tMediaEnd;
 705
 706     return E_NOTIMPL;
 707 }
 708
 709 static HRESULT WINAPI StdMediaSample2_SetMediaTime(IMediaSample2 * iface, LONGLONG * pStart, LONGLONG * pEnd)
 710 {
 711     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 712
 713     TRACE("(%p)->(%p, %p)\n", iface, pStart, pEnd);
 714
 715     if (pStart)
 716         This->tMediaStart = *pStart;
 717     else
 718         This->tMediaStart = INVALID_MEDIA_TIME;
 719
 720     if (pEnd)
 721         This->tMediaEnd = *pEnd;
 722     else
 723         This->tMediaEnd = 0;
 724
 725     return S_OK;
 726 }
 727
 728 static HRESULT WINAPI StdMediaSample2_GetProperties(IMediaSample2 * iface, DWORD cbProperties, BYTE * pbProperties)
 729 {
 730     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 731
 732     TRACE("(%p)->(%d, %p)\n", iface, cbProperties, pbProperties);
 733
 734     memcpy(pbProperties, &This->props, min(cbProperties, sizeof(This->props)));
 735
 736     return S_OK;
 737 }
 738
 739 static HRESULT WINAPI StdMediaSample2_SetProperties(IMediaSample2 * iface, DWORD cbProperties, const BYTE * pbProperties)
 740 {
 741     StdMediaSample2 *This = (StdMediaSample2 *)iface;
 742
 743     TRACE("(%p)->(%d, %p)\n", iface, cbProperties, pbProperties);
 744
 745     /* NOTE: pbBuffer and cbBuffer are read-only */
 746     memcpy(&This->props, pbProperties, min(cbProperties, AM_SAMPLE2_PROP_SIZE_WRITABLE));
 747
 748     return S_OK;
 749 }
 750
 751 static const IMediaSample2Vtbl StdMediaSample2_VTable =
 752 {
 753     StdMediaSample2_QueryInterface,
 754     StdMediaSample2_AddRef,
 755     StdMediaSample2_Release,
 756     StdMediaSample2_GetPointer,
 757     StdMediaSample2_GetSize,
 758     StdMediaSample2_GetTime,
 759     StdMediaSample2_SetTime,
 760     StdMediaSample2_IsSyncPoint,
 761     StdMediaSample2_SetSyncPoint,
 762     StdMediaSample2_IsPreroll,
 763     StdMediaSample2_SetPreroll,
 764     StdMediaSample2_GetActualDataLength,
 765     StdMediaSample2_SetActualDataLength,
 766     StdMediaSample2_GetMediaType,
 767     StdMediaSample2_SetMediaType,
 768     StdMediaSample2_IsDiscontinuity,
 769     StdMediaSample2_SetDiscontinuity,
 770     StdMediaSample2_GetMediaTime,
 771     StdMediaSample2_SetMediaTime,
 772     StdMediaSample2_GetProperties,
 773     StdMediaSample2_SetProperties
 774 };
 775
 776 typedef struct StdMemAllocator
 777 {
 778     BaseMemAllocator base;
 779     CRITICAL_SECTION csState;
 780     LPVOID pMemory;
 781 } StdMemAllocator;
 782
 783 static HRESULT StdMemAllocator_Alloc(IMemAllocator * iface)
 784 {
 785     StdMemAllocator *This = (StdMemAllocator *)iface;
 786     StdMediaSample2 * pSample = NULL;
 787     SYSTEM_INFO si;
 788     LONG i;
 789
 790     assert(list_empty(&This->base.free_list));
 791
 792     /* check alignment */
 793     GetSystemInfo(&si);
 794
 795     /* we do not allow a courser alignment than the OS page size */
 796     if ((si.dwPageSize % This->base.props.cbAlign) != 0)
 797         return VFW_E_BADALIGN;
 798
 799     /* FIXME: each sample has to have its buffer start on the right alignment.
 800      * We don't do this at the moment */
 801
 802     /* allocate memory */
 803     This->pMemory = VirtualAlloc(NULL, (This->base.props.cbBuffer + This->base.props.cbPrefix) * This->base.props.cBuffers, MEM_COMMIT, PAGE_READWRITE);
 804
 805     for (i = This->base.props.cBuffers - 1; i >= 0; i--)
 806     {
 807         /* pbBuffer does not start at the base address, it starts at base + cbPrefix */
 808         BYTE * pbBuffer = (BYTE *)This->pMemory + i * (This->base.props.cbBuffer + This->base.props.cbPrefix) + This->base.props.cbPrefix;
 809
 810         StdMediaSample2_Construct(pbBuffer, This->base.props.cbBuffer, iface, &pSample);
 811
 812         list_add_head(&This->base.free_list, &pSample->listentry);
 813     }
 814
 815     return S_OK;
 816 }
 817
 818 static HRESULT StdMemAllocator_Free(IMemAllocator * iface)
 819 {
 820     StdMemAllocator *This = (StdMemAllocator *)iface;
 821     struct list * cursor;
 822
 823     if (!list_empty(&This->base.used_list))
 824     {
 825         WARN("Freeing allocator with outstanding samples!\n");
 826         while ((cursor = list_head(&This->base.used_list)) != NULL)
 827         {
 828             StdMediaSample2 *pSample;
 829             list_remove(cursor);
 830             pSample = LIST_ENTRY(cursor, StdMediaSample2, listentry);
 831             pSample->pParent = NULL;
 832         }
 833     }
 834
 835     while ((cursor = list_head(&This->base.free_list)) != NULL)
 836     {
 837         list_remove(cursor);
 838         StdMediaSample2_Delete(LIST_ENTRY(cursor, StdMediaSample2, listentry));
 839     }
 840
 841     /* free memory */
 842     if (!VirtualFree(This->pMemory, 0, MEM_RELEASE))
 843     {
 844         ERR("Couldn't free memory. Error: %u\n", GetLastError());
 845         return HRESULT_FROM_WIN32(GetLastError());
 846     }
 847
 848     return S_OK;
 849 }
 850
 851 static void StdMemAllocator_Destroy(IMemAllocator *iface)
 852 {
 853     StdMemAllocator *This = (StdMemAllocator *)iface;
 854
 855     This->csState.DebugInfo->Spare[0] = 0;
 856     DeleteCriticalSection(&This->csState);
 857
 858     CoTaskMemFree(This);
 859 }
 860
 861 HRESULT StdMemAllocator_create(LPUNKNOWN lpUnkOuter, LPVOID * ppv)
 862 {
 863     StdMemAllocator * pMemAlloc;
 864     HRESULT hr;
 865
 866     *ppv = NULL;
 867
 868     if (lpUnkOuter)
 869         return CLASS_E_NOAGGREGATION;
 870
 871     if (!(pMemAlloc = CoTaskMemAlloc(sizeof(*pMemAlloc))))
 872         return E_OUTOFMEMORY;
 873
 874     InitializeCriticalSection(&pMemAlloc->csState);
 875     pMemAlloc->csState.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": StdMemAllocator.csState");
 876
 877     pMemAlloc->pMemory = NULL;
 878
 879     if (SUCCEEDED(hr = BaseMemAllocator_Init(StdMemAllocator_Alloc, StdMemAllocator_Free, NULL, NULL, NULL, StdMemAllocator_Destroy, &pMemAlloc->csState, &pMemAlloc->base)))
 880         *ppv = pMemAlloc;
 881     else
 882         CoTaskMemFree(pMemAlloc);
 883
 884     return hr;
 885 }