dlls/quartz/avisplit.c

   1 /*
   2  * AVI Splitter Filter
   3  *
   4  * Copyright 2003 Robert Shearman
   5  * Copyright 2004-2005 Christian Costa
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21 /* FIXME:
  22  * - we don't do anything with indices yet (we could use them when seeking)
  23  * - we don't support multiple RIFF sections (i.e. large AVI files > 2Gb)
  24  */
  25
  26 #include "quartz_private.h"
  27 #include "control_private.h"
  28 #include "pin.h"
  29
  30 #include "uuids.h"
  31 #include "aviriff.h"
  32 #include "mmreg.h"
  33 #include "vfwmsgs.h"
  34 #include "amvideo.h"
  35
  36 #include "fourcc.h"
  37
  38 #include "wine/unicode.h"
  39 #include "wine/debug.h"
  40
  41 #include <math.h>
  42 #include <assert.h>
  43
  44 #include "parser.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  47
  48 typedef struct AVISplitterImpl
  49 {
  50     ParserImpl Parser;
  51     IMediaSample * pCurrentSample;
  52     RIFFCHUNK CurrentChunk;
  53     LONGLONG CurrentChunkOffset; /* in media time */
  54     LONGLONG EndOfFile;
  55     AVIMAINHEADER AviHeader;
  56 } AVISplitterImpl;
  57
  58 static HRESULT AVISplitter_NextChunk(LONGLONG * pllCurrentChunkOffset, RIFFCHUNK * pCurrentChunk, const REFERENCE_TIME * tStart, const REFERENCE_TIME * tStop, const BYTE * pbSrcStream, int inner)
  59 {
  60     if (inner)
  61         *pllCurrentChunkOffset += MEDIATIME_FROM_BYTES(sizeof(RIFFLIST));
  62     else
  63         *pllCurrentChunkOffset += MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK) + RIFFROUND(pCurrentChunk->cb));
  64
  65     if (*pllCurrentChunkOffset >= *tStop)
  66         return S_FALSE; /* no more data - we couldn't even get the next chunk header! */
  67     else if (*pllCurrentChunkOffset + MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK)) >= *tStop)
  68     {
  69         memcpy(pCurrentChunk, pbSrcStream + (DWORD)BYTES_FROM_MEDIATIME(*pllCurrentChunkOffset - *tStart), (DWORD)BYTES_FROM_MEDIATIME(*tStop - *pllCurrentChunkOffset));
  70         return S_FALSE; /* no more data */
  71     }
  72     else
  73         memcpy(pCurrentChunk, pbSrcStream + (DWORD)BYTES_FROM_MEDIATIME(*pllCurrentChunkOffset - *tStart), sizeof(RIFFCHUNK));
  74
  75     return S_OK;
  76 }
  77
  78 static HRESULT AVISplitter_Sample(LPVOID iface, IMediaSample * pSample)
  79 {
  80     AVISplitterImpl *This = (AVISplitterImpl *)iface;
  81     LPBYTE pbSrcStream = NULL;
  82     long cbSrcStream = 0;
  83     REFERENCE_TIME tStart, tStop;
  84     HRESULT hr;
  85     BOOL bMoreData = TRUE;
  86
  87     hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
  88
  89     hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
  90
  91     cbSrcStream = IMediaSample_GetActualDataLength(pSample);
  92
  93     /* trace removed for performance reasons */
  94     /* TRACE("(%p)\n", pSample); */
  95
  96     assert(BYTES_FROM_MEDIATIME(tStop - tStart) == cbSrcStream);
  97
  98     if (This->CurrentChunkOffset <= tStart && This->CurrentChunkOffset + MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK)) > tStart)
  99     {
 100         DWORD offset = (DWORD)BYTES_FROM_MEDIATIME(tStart - This->CurrentChunkOffset);
 101         assert(offset <= sizeof(RIFFCHUNK));
 102         memcpy((BYTE *)&This->CurrentChunk + offset, pbSrcStream, sizeof(RIFFCHUNK) - offset);
 103     }
 104     else if (This->CurrentChunkOffset > tStart)
 105     {
 106         DWORD offset = (DWORD)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset - tStart);
 107         if (offset >= (DWORD)cbSrcStream)
 108         {
 109             FIXME("large offset\n");
 110             hr = S_OK;
 111             goto skip;
 112         }
 113
 114         memcpy(&This->CurrentChunk, pbSrcStream + offset, sizeof(RIFFCHUNK));
 115     }
 116
 117     assert(This->CurrentChunkOffset + MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK)) < tStop);
 118
 119     while (bMoreData)
 120     {
 121         BYTE * pbDstStream;
 122         long cbDstStream;
 123         long chunk_remaining_bytes = 0;
 124         long offset_src;
 125         WORD streamId;
 126         Parser_OutputPin * pOutputPin;
 127         BOOL bSyncPoint = TRUE;
 128
 129         if (This->CurrentChunkOffset >= tStart)
 130             offset_src = (long)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset - tStart) + sizeof(RIFFCHUNK);
 131         else
 132             offset_src = 0;
 133
 134         switch (This->CurrentChunk.fcc)
 135         {
 136         case ckidJUNK:
 137         case aviFCC('i','d','x','1'): /* Index is not handled */
 138             /* silently ignore */
 139             if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 140                 bMoreData = FALSE;
 141             continue;
 142         case ckidLIST:
 143             /* We only handle the 'rec ' list which contains the stream data */
 144             if ((*(DWORD*)(pbSrcStream + BYTES_FROM_MEDIATIME(This->CurrentChunkOffset-tStart) + sizeof(RIFFCHUNK))) == aviFCC('r','e','c',' '))
 145             {
 146                 /* FIXME: We only advanced to the first chunk inside the list without keeping track that we are in it.
 147                  *        This is not clean and the parser should be improved for that but it is enough for most AVI files. */
 148                 if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, TRUE))
 149                 {
 150                     bMoreData = FALSE;
 151                     continue;
 152                 }
 153                 This->CurrentChunk = *(RIFFCHUNK*) (pbSrcStream + BYTES_FROM_MEDIATIME(This->CurrentChunkOffset-tStart));
 154                 offset_src = (long)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset - tStart) + sizeof(RIFFCHUNK);
 155                 break;
 156             }
 157             else if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 158                 bMoreData = FALSE;
 159             continue;
 160         default:
 161             break;
 162 #if 0 /* According to the AVI specs, a stream data chunk should be ABXX where AB is the stream number and X means don't care */
 163             switch (TWOCCFromFOURCC(This->CurrentChunk.fcc))
 164             {
 165             case cktypeDIBcompressed:
 166                 bSyncPoint = FALSE;
 167                 /* fall-through */
 168             case cktypeDIBbits:
 169                 /* FIXME: check that pin is of type video */
 170                 break;
 171             case cktypeWAVEbytes:
 172                 /* FIXME: check that pin is of type audio */
 173                 break;
 174             case cktypePALchange:
 175                 FIXME("handle palette change\n");
 176                 break;
 177             default:
 178                 FIXME("Skipping unknown chunk type: %s at file offset 0x%lx\n", debugstr_an((LPSTR)&This->CurrentChunk.fcc, 4), (DWORD)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset));
 179                 if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 180                     bMoreData = FALSE;
 181                 continue;
 182             }
 183 #endif
 184         }
 185
 186         streamId = StreamFromFOURCC(This->CurrentChunk.fcc);
 187
 188         if (streamId > This->Parser.cStreams)
 189         {
 190             ERR("Corrupted AVI file (contains stream id %d, but supposed to only have %ld streams)\n", streamId, This->Parser.cStreams);
 191             hr = E_FAIL;
 192             break;
 193         }
 194
 195         pOutputPin = (Parser_OutputPin *)This->Parser.ppPins[streamId + 1];
 196
 197         if (!This->pCurrentSample)
 198         {
 199             /* cache media sample until it is ready to be despatched
 200              * (i.e. we reach the end of the chunk) */
 201             hr = OutputPin_GetDeliveryBuffer(&pOutputPin->pin, &This->pCurrentSample, NULL, NULL, 0);
 202
 203             if (SUCCEEDED(hr))
 204             {
 205                 hr = IMediaSample_SetActualDataLength(This->pCurrentSample, 0);
 206                 assert(hr == S_OK);
 207             }
 208             else
 209             {
 210                 TRACE("Skipping sending sample for stream %02d due to error (%lx)\n", streamId, hr);
 211                 This->pCurrentSample = NULL;
 212                 if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 213                     bMoreData = FALSE;
 214                 continue;
 215             }
 216         }
 217
 218         hr = IMediaSample_GetPointer(This->pCurrentSample, &pbDstStream);
 219
 220         if (SUCCEEDED(hr))
 221         {
 222             cbDstStream = IMediaSample_GetSize(This->pCurrentSample);
 223
 224             chunk_remaining_bytes = (long)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset + MEDIATIME_FROM_BYTES(This->CurrentChunk.cb + sizeof(RIFFCHUNK)) - tStart) - offset_src;
 225
 226             assert(chunk_remaining_bytes >= 0);
 227             assert(chunk_remaining_bytes <= cbDstStream - IMediaSample_GetActualDataLength(This->pCurrentSample));
 228
 229             /* trace removed for performance reasons */
 230 /*          TRACE("chunk_remaining_bytes: 0x%lx, cbSrcStream: 0x%lx, offset_src: 0x%lx\n", chunk_remaining_bytes, cbSrcStream, offset_src); */
 231         }
 232
 233         if (chunk_remaining_bytes <= cbSrcStream - offset_src)
 234         {
 235             if (SUCCEEDED(hr))
 236             {
 237                 memcpy(pbDstStream + IMediaSample_GetActualDataLength(This->pCurrentSample), pbSrcStream + offset_src, chunk_remaining_bytes);
 238                 hr = IMediaSample_SetActualDataLength(This->pCurrentSample, chunk_remaining_bytes + IMediaSample_GetActualDataLength(This->pCurrentSample));
 239                 assert(hr == S_OK);
 240             }
 241
 242             if (SUCCEEDED(hr))
 243             {
 244                 REFERENCE_TIME tAviStart, tAviStop;
 245
 246                 /* FIXME: hack */
 247                 if (pOutputPin->dwSamplesProcessed == 0)
 248                     IMediaSample_SetDiscontinuity(This->pCurrentSample, TRUE);
 249
 250                 IMediaSample_SetSyncPoint(This->pCurrentSample, bSyncPoint);
 251
 252                 pOutputPin->dwSamplesProcessed++;
 253
 254                 if (pOutputPin->dwSampleSize)
 255                     tAviStart = (LONGLONG)ceil(10000000.0 * (float)(pOutputPin->dwSamplesProcessed - 1) * (float)IMediaSample_GetActualDataLength(This->pCurrentSample) / ((float)pOutputPin->dwSampleSize * pOutputPin->fSamplesPerSec));
 256                 else
 257                     tAviStart = (LONGLONG)ceil(10000000.0 * (float)(pOutputPin->dwSamplesProcessed - 1) / (float)pOutputPin->fSamplesPerSec);
 258                 if (pOutputPin->dwSampleSize)
 259                     tAviStop = (LONGLONG)ceil(10000000.0 * (float)pOutputPin->dwSamplesProcessed * (float)IMediaSample_GetActualDataLength(This->pCurrentSample) / ((float)pOutputPin->dwSampleSize * pOutputPin->fSamplesPerSec));
 260                 else
 261                     tAviStop = (LONGLONG)ceil(10000000.0 * (float)pOutputPin->dwSamplesProcessed / (float)pOutputPin->fSamplesPerSec);
 262
 263                 IMediaSample_SetTime(This->pCurrentSample, &tAviStart, &tAviStop);
 264
 265                 hr = OutputPin_SendSample(&pOutputPin->pin, This->pCurrentSample);
 266                 if (hr != S_OK && hr != VFW_E_NOT_CONNECTED)
 267                     ERR("Error sending sample (%lx)\n", hr);
 268             }
 269
 270             if (This->pCurrentSample)
 271                 IMediaSample_Release(This->pCurrentSample);
 272
 273             This->pCurrentSample = NULL;
 274
 275             if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 276                 bMoreData = FALSE;
 277         }
 278         else
 279         {
 280             if (SUCCEEDED(hr))
 281             {
 282                 memcpy(pbDstStream + IMediaSample_GetActualDataLength(This->pCurrentSample), pbSrcStream + offset_src, cbSrcStream - offset_src);
 283                 IMediaSample_SetActualDataLength(This->pCurrentSample, cbSrcStream - offset_src + IMediaSample_GetActualDataLength(This->pCurrentSample));
 284             }
 285             bMoreData = FALSE;
 286         }
 287     }
 288
 289 skip:
 290     if (tStop >= This->EndOfFile)
 291     {
 292         int i;
 293
 294         TRACE("End of file reached\n");
 295
 296         for (i = 0; i < This->Parser.cStreams; i++)
 297         {
 298             IPin* ppin;
 299             HRESULT hr;
 300
 301             TRACE("Send End Of Stream to output pin %d\n", i);
 302
 303             hr = IPin_ConnectedTo(This->Parser.ppPins[i+1], &ppin);
 304             if (SUCCEEDED(hr))
 305             {
 306                 hr = IPin_EndOfStream(ppin);
 307                 IPin_Release(ppin);
 308             }
 309             if (FAILED(hr))
 310             {
 311                 ERR("%lx\n", hr);
 312                 break;
 313             }
 314         }
 315
 316         /* Force the pullpin thread to stop */
 317         hr = S_FALSE;
 318     }
 319
 320     return hr;
 321 }
 322
 323 static HRESULT AVISplitter_QueryAccept(LPVOID iface, const AM_MEDIA_TYPE * pmt)
 324 {
 325     if (IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream) && IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_Avi))
 326         return S_OK;
 327     return S_FALSE;
 328 }
 329
 330 static HRESULT AVISplitter_ProcessStreamList(AVISplitterImpl * This, const BYTE * pData, DWORD cb)
 331 {
 332     PIN_INFO piOutput;
 333     const RIFFCHUNK * pChunk;
 334     HRESULT hr;
 335     AM_MEDIA_TYPE amt;
 336     float fSamplesPerSec = 0.0f;
 337     DWORD dwSampleSize = 0;
 338     DWORD dwLength = 0;
 339     ALLOCATOR_PROPERTIES props;
 340     static const WCHAR wszStreamTemplate[] = {'S','t','r','e','a','m',' ','%','0','2','d',0};
 341
 342     props.cbAlign = 1;
 343     props.cbPrefix = 0;
 344     props.cbBuffer = 0x20000;
 345     props.cBuffers = 2;
 346
 347     ZeroMemory(&amt, sizeof(amt));
 348     piOutput.dir = PINDIR_OUTPUT;
 349     piOutput.pFilter = (IBaseFilter *)This;
 350     wsprintfW(piOutput.achName, wszStreamTemplate, This->Parser.cStreams);
 351
 352     for (pChunk = (const RIFFCHUNK *)pData;
 353          ((const BYTE *)pChunk >= pData) && ((const BYTE *)pChunk + sizeof(RIFFCHUNK) < pData + cb) && (pChunk->cb > 0);
 354          pChunk = (const RIFFCHUNK *)((const BYTE*)pChunk + sizeof(RIFFCHUNK) + pChunk->cb)
 355         )
 356     {
 357         switch (pChunk->fcc)
 358         {
 359         case ckidSTREAMHEADER:
 360             {
 361                 const AVISTREAMHEADER * pStrHdr = (const AVISTREAMHEADER *)pChunk;
 362                 TRACE("processing stream header\n");
 363
 364                 fSamplesPerSec = (float)pStrHdr->dwRate / (float)pStrHdr->dwScale;
 365
 366                 switch (pStrHdr->fccType)
 367                 {
 368                 case streamtypeVIDEO:
 369                     memcpy(&amt.formattype, &FORMAT_VideoInfo, sizeof(GUID));
 370                     amt.pbFormat = NULL;
 371                     amt.cbFormat = 0;
 372                     break;
 373                 case streamtypeAUDIO:
 374                     memcpy(&amt.formattype, &FORMAT_WaveFormatEx, sizeof(GUID));
 375                     break;
 376                 default:
 377                     memcpy(&amt.formattype, &FORMAT_None, sizeof(GUID));
 378                 }
 379                 memcpy(&amt.majortype, &MEDIATYPE_Video, sizeof(GUID));
 380                 amt.majortype.Data1 = pStrHdr->fccType;
 381                 memcpy(&amt.subtype, &MEDIATYPE_Video, sizeof(GUID));
 382                 amt.subtype.Data1 = pStrHdr->fccHandler;
 383                 TRACE("Subtype FCC: %.04s\n", (LPCSTR)&pStrHdr->fccHandler);
 384                 amt.lSampleSize = pStrHdr->dwSampleSize;
 385                 amt.bFixedSizeSamples = (amt.lSampleSize != 0);
 386
 387                 /* FIXME: Is this right? */
 388                 if (!amt.lSampleSize)
 389                 {
 390                     amt.lSampleSize = 1;
 391                     dwSampleSize = 1;
 392                 }
 393
 394                 amt.bTemporalCompression = IsEqualGUID(&amt.majortype, &MEDIATYPE_Video); /* FIXME? */
 395                 dwSampleSize = pStrHdr->dwSampleSize;
 396                 dwLength = pStrHdr->dwLength;
 397                 if (!dwLength)
 398                     dwLength = This->AviHeader.dwTotalFrames;
 399
 400                 if (pStrHdr->dwSuggestedBufferSize)
 401                     props.cbBuffer = pStrHdr->dwSuggestedBufferSize;
 402
 403                 break;
 404             }
 405         case ckidSTREAMFORMAT:
 406             TRACE("processing stream format data\n");
 407             if (IsEqualIID(&amt.formattype, &FORMAT_VideoInfo))
 408             {
 409                 VIDEOINFOHEADER * pvi;
 410                 /* biCompression member appears to override the value in the stream header.
 411                  * i.e. the stream header can say something completely contradictory to what
 412                  * is in the BITMAPINFOHEADER! */
 413                 if (pChunk->cb < sizeof(BITMAPINFOHEADER))
 414                 {
 415                     ERR("Not enough bytes for BITMAPINFOHEADER\n");
 416                     return E_FAIL;
 417                 }
 418                 amt.cbFormat = sizeof(VIDEOINFOHEADER) - sizeof(BITMAPINFOHEADER) + pChunk->cb;
 419                 amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
 420                 ZeroMemory(amt.pbFormat, amt.cbFormat);
 421                 pvi = (VIDEOINFOHEADER *)amt.pbFormat;
 422                 pvi->AvgTimePerFrame = (LONGLONG)(10000000.0 / fSamplesPerSec);
 423                 CopyMemory(&pvi->bmiHeader, (const BYTE *)(pChunk + 1), pChunk->cb);
 424                 if (pvi->bmiHeader.biCompression)
 425                     amt.subtype.Data1 = pvi->bmiHeader.biCompression;
 426             }
 427             else
 428             {
 429                 amt.cbFormat = pChunk->cb;
 430                 amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
 431                 CopyMemory(amt.pbFormat, (const BYTE *)(pChunk + 1), amt.cbFormat);
 432             }
 433             break;
 434         case ckidSTREAMNAME:
 435             TRACE("processing stream name\n");
 436             /* FIXME: this doesn't exactly match native version (we omit the "##)" prefix), but hey... */
 437             MultiByteToWideChar(CP_ACP, 0, (LPCSTR)(pChunk + 1), pChunk->cb, piOutput.achName, sizeof(piOutput.achName) / sizeof(piOutput.achName[0]));
 438             break;
 439         case ckidSTREAMHANDLERDATA:
 440             FIXME("process stream handler data\n");
 441             break;
 442         case ckidJUNK:
 443             TRACE("JUNK chunk ignored\n");
 444             break;
 445         default:
 446             FIXME("unknown chunk type \"%.04s\" ignored\n", (LPCSTR)&pChunk->fcc);
 447         }
 448     }
 449
 450     if (IsEqualGUID(&amt.formattype, &FORMAT_WaveFormatEx))
 451     {
 452         memcpy(&amt.subtype, &MEDIATYPE_Video, sizeof(GUID));
 453         amt.subtype.Data1 = ((WAVEFORMATEX *)amt.pbFormat)->wFormatTag;
 454     }
 455
 456     dump_AM_MEDIA_TYPE(&amt);
 457     TRACE("fSamplesPerSec = %f\n", (double)fSamplesPerSec);
 458     TRACE("dwSampleSize = %lx\n", dwSampleSize);
 459     TRACE("dwLength = %lx\n", dwLength);
 460
 461     hr = Parser_AddPin(&(This->Parser), &piOutput, &props, &amt, fSamplesPerSec, dwSampleSize, dwLength);
 462
 463     return hr;
 464 }
 465
 466 /* FIXME: fix leaks on failure here */
 467 static HRESULT AVISplitter_InputPin_PreConnect(IPin * iface, IPin * pConnectPin)
 468 {
 469     PullPin *This = (PullPin *)iface;
 470     HRESULT hr;
 471     RIFFLIST list;
 472     LONGLONG pos = 0; /* in bytes */
 473     BYTE * pBuffer;
 474     RIFFCHUNK * pCurrentChunk;
 475     AVISplitterImpl * pAviSplit = (AVISplitterImpl *)This->pin.pinInfo.pFilter;
 476
 477     hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 478     pos += sizeof(list);
 479
 480     if (list.fcc != ckidRIFF)
 481     {
 482         ERR("Input stream not a RIFF file\n");
 483         return E_FAIL;
 484     }
 485     if (list.cb > 1 * 1024 * 1024 * 1024) /* cannot be more than 1Gb in size */
 486     {
 487         ERR("Input stream violates RIFF spec\n");
 488         return E_FAIL;
 489     }
 490     if (list.fccListType != ckidAVI)
 491     {
 492         ERR("Input stream not an AVI RIFF file\n");
 493         return E_FAIL;
 494     }
 495
 496     hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 497     if (list.fcc != ckidLIST)
 498     {
 499         ERR("Expected LIST chunk, but got %.04s\n", (LPSTR)&list.fcc);
 500         return E_FAIL;
 501     }
 502     if (list.fccListType != ckidHEADERLIST)
 503     {
 504         ERR("Header list expected. Got: %.04s\n", (LPSTR)&list.fccListType);
 505         return E_FAIL;
 506     }
 507
 508     pBuffer = HeapAlloc(GetProcessHeap(), 0, list.cb - sizeof(RIFFLIST) + sizeof(RIFFCHUNK));
 509     hr = IAsyncReader_SyncRead(This->pReader, pos + sizeof(list), list.cb - sizeof(RIFFLIST) + sizeof(RIFFCHUNK), pBuffer);
 510
 511     pAviSplit->AviHeader.cb = 0;
 512
 513     for (pCurrentChunk = (RIFFCHUNK *)pBuffer; (BYTE *)pCurrentChunk + sizeof(*pCurrentChunk) < pBuffer + list.cb; pCurrentChunk = (RIFFCHUNK *)(((BYTE *)pCurrentChunk) + sizeof(*pCurrentChunk) + pCurrentChunk->cb))
 514     {
 515         RIFFLIST * pList;
 516
 517         switch (pCurrentChunk->fcc)
 518         {
 519         case ckidMAINAVIHEADER:
 520             /* AVIMAINHEADER includes the structure that is pCurrentChunk at the moment */
 521             memcpy(&pAviSplit->AviHeader, pCurrentChunk, sizeof(pAviSplit->AviHeader));
 522             break;
 523         case ckidLIST:
 524             pList = (RIFFLIST *)pCurrentChunk;
 525             switch (pList->fccListType)
 526             {
 527             case ckidSTREAMLIST:
 528                 hr = AVISplitter_ProcessStreamList(pAviSplit, (BYTE *)pCurrentChunk + sizeof(RIFFLIST), pCurrentChunk->cb + sizeof(RIFFCHUNK) - sizeof(RIFFLIST));
 529                 break;
 530             case ckidODML:
 531                 FIXME("process ODML header\n");
 532                 break;
 533             }
 534             break;
 535         case ckidJUNK:
 536             /* ignore */
 537             break;
 538         default:
 539             FIXME("unrecognised header list type: %.04s\n", (LPSTR)&pCurrentChunk->fcc);
 540         }
 541     }
 542     HeapFree(GetProcessHeap(), 0, pBuffer);
 543
 544     if (pAviSplit->AviHeader.cb != sizeof(pAviSplit->AviHeader) - sizeof(RIFFCHUNK))
 545     {
 546         ERR("Avi Header wrong size!\n");
 547         return E_FAIL;
 548     }
 549
 550     pos += sizeof(RIFFCHUNK) + list.cb;
 551     hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 552
 553     if (list.fcc == ckidJUNK)
 554     {
 555         pos += sizeof(RIFFCHUNK) + list.cb;
 556         hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 557     }
 558
 559     if (list.fcc != ckidLIST)
 560     {
 561         ERR("Expected LIST, but got %.04s\n", (LPSTR)&list.fcc);
 562         return E_FAIL;
 563     }
 564     if (list.fccListType != ckidAVIMOVIE)
 565     {
 566         ERR("Expected AVI movie list, but got %.04s\n", (LPSTR)&list.fccListType);
 567         return E_FAIL;
 568     }
 569
 570     if (hr == S_OK)
 571     {
 572         pAviSplit->CurrentChunkOffset = MEDIATIME_FROM_BYTES(pos + sizeof(RIFFLIST));
 573         pAviSplit->EndOfFile = MEDIATIME_FROM_BYTES(pos + list.cb + sizeof(RIFFLIST));
 574         hr = IAsyncReader_SyncRead(This->pReader, BYTES_FROM_MEDIATIME(pAviSplit->CurrentChunkOffset), sizeof(pAviSplit->CurrentChunk), (BYTE *)&pAviSplit->CurrentChunk);
 575     }
 576
 577     if (hr != S_OK)
 578         return E_FAIL;
 579
 580     TRACE("AVI File ok\n");
 581
 582     return hr;
 583 }
 584
 585 HRESULT AVISplitter_create(IUnknown * pUnkOuter, LPVOID * ppv)
 586 {
 587     HRESULT hr;
 588     AVISplitterImpl * This;
 589
 590     TRACE("(%p, %p)\n", pUnkOuter, ppv);
 591
 592     *ppv = NULL;
 593
 594     if (pUnkOuter)
 595         return CLASS_E_NOAGGREGATION;
 596
 597     /* Note: This memory is managed by the transform filter once created */
 598     This = CoTaskMemAlloc(sizeof(AVISplitterImpl));
 599
 600     This->pCurrentSample = NULL;
 601
 602     hr = Parser_Create(&(This->Parser), &CLSID_AviSplitter, AVISplitter_Sample, AVISplitter_QueryAccept, AVISplitter_InputPin_PreConnect);
 603
 604     if (FAILED(hr))
 605         return hr;
 606
 607     *ppv = (LPVOID)This;
 608
 609     return hr;
 610 }