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   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 "vfwmsgs.h"
  33 #include "amvideo.h"
  34
  35 #include "fourcc.h"
  36
  37 #include "wine/unicode.h"
  38 #include "wine/debug.h"
  39
  40 #include <math.h>
  41 #include <assert.h>
  42
  43 #include "parser.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  46
  47 typedef struct StreamData
  48 {
  49     DWORD dwSampleSize;
  50     FLOAT fSamplesPerSec;
  51     DWORD dwLength;
  52 } StreamData;
  53
  54 typedef struct AVISplitterImpl
  55 {
  56     ParserImpl Parser;
  57     IMediaSample * pCurrentSample;
  58     RIFFCHUNK CurrentChunk;
  59     LONGLONG CurrentChunkOffset; /* in media time */
  60     LONGLONG EndOfFile;
  61     AVIMAINHEADER AviHeader;
  62     StreamData *streams;
  63 } AVISplitterImpl;
  64
  65 static HRESULT AVISplitter_NextChunk(LONGLONG * pllCurrentChunkOffset, RIFFCHUNK * pCurrentChunk, const REFERENCE_TIME * tStart, const REFERENCE_TIME * tStop, const BYTE * pbSrcStream, int inner)
  66 {
  67     if (inner)
  68         *pllCurrentChunkOffset += MEDIATIME_FROM_BYTES(sizeof(RIFFLIST));
  69     else
  70         *pllCurrentChunkOffset += MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK) + RIFFROUND(pCurrentChunk->cb));
  71
  72     if (*pllCurrentChunkOffset >= *tStop)
  73         return S_FALSE; /* no more data - we couldn't even get the next chunk header! */
  74     else if (*pllCurrentChunkOffset + MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK)) >= *tStop)
  75     {
  76         memcpy(pCurrentChunk, pbSrcStream + (DWORD)BYTES_FROM_MEDIATIME(*pllCurrentChunkOffset - *tStart), (DWORD)BYTES_FROM_MEDIATIME(*tStop - *pllCurrentChunkOffset));
  77         return S_FALSE; /* no more data */
  78     }
  79     else
  80         memcpy(pCurrentChunk, pbSrcStream + (DWORD)BYTES_FROM_MEDIATIME(*pllCurrentChunkOffset - *tStart), sizeof(RIFFCHUNK));
  81
  82     return S_OK;
  83 }
  84
  85 static HRESULT AVISplitter_Sample(LPVOID iface, IMediaSample * pSample)
  86 {
  87     AVISplitterImpl *This = (AVISplitterImpl *)iface;
  88     LPBYTE pbSrcStream = NULL;
  89     long cbSrcStream = 0;
  90     REFERENCE_TIME tStart, tStop;
  91     HRESULT hr;
  92     BOOL bMoreData = TRUE;
  93
  94     hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
  95
  96     hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
  97
  98     cbSrcStream = IMediaSample_GetActualDataLength(pSample);
  99
 100     /* trace removed for performance reasons */
 101     /* TRACE("(%p)\n", pSample); */
 102
 103     assert(BYTES_FROM_MEDIATIME(tStop - tStart) == cbSrcStream);
 104
 105     if (This->CurrentChunkOffset <= tStart && This->CurrentChunkOffset + MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK)) > tStart)
 106     {
 107         DWORD offset = (DWORD)BYTES_FROM_MEDIATIME(tStart - This->CurrentChunkOffset);
 108         assert(offset <= sizeof(RIFFCHUNK));
 109         memcpy((BYTE *)&This->CurrentChunk + offset, pbSrcStream, sizeof(RIFFCHUNK) - offset);
 110     }
 111     else if (This->CurrentChunkOffset > tStart)
 112     {
 113         DWORD offset = (DWORD)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset - tStart);
 114         if (offset >= (DWORD)cbSrcStream)
 115         {
 116             FIXME("large offset\n");
 117             hr = S_OK;
 118             goto skip;
 119         }
 120
 121         memcpy(&This->CurrentChunk, pbSrcStream + offset, sizeof(RIFFCHUNK));
 122     }
 123
 124     assert(This->CurrentChunkOffset + MEDIATIME_FROM_BYTES(sizeof(RIFFCHUNK)) < tStop);
 125
 126     while (bMoreData)
 127     {
 128         BYTE * pbDstStream;
 129         long cbDstStream;
 130         long chunk_remaining_bytes = 0;
 131         long offset_src;
 132         WORD streamId;
 133         Parser_OutputPin * pOutputPin;
 134         BOOL bSyncPoint = TRUE;
 135
 136         if (This->CurrentChunkOffset >= tStart)
 137             offset_src = (long)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset - tStart) + sizeof(RIFFCHUNK);
 138         else
 139             offset_src = 0;
 140
 141         switch (This->CurrentChunk.fcc)
 142         {
 143         case ckidJUNK:
 144         case aviFCC('i','d','x','1'): /* Index is not handled */
 145             /* silently ignore */
 146             if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 147                 bMoreData = FALSE;
 148             continue;
 149         case ckidLIST:
 150             /* We only handle the 'rec ' list which contains the stream data */
 151             if ((*(DWORD*)(pbSrcStream + BYTES_FROM_MEDIATIME(This->CurrentChunkOffset-tStart) + sizeof(RIFFCHUNK))) == aviFCC('r','e','c',' '))
 152             {
 153                 /* FIXME: We only advanced to the first chunk inside the list without keeping track that we are in it.
 154                  *        This is not clean and the parser should be improved for that but it is enough for most AVI files. */
 155                 if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, TRUE))
 156                 {
 157                     bMoreData = FALSE;
 158                     continue;
 159                 }
 160                 This->CurrentChunk = *(RIFFCHUNK*) (pbSrcStream + BYTES_FROM_MEDIATIME(This->CurrentChunkOffset-tStart));
 161                 offset_src = (long)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset - tStart) + sizeof(RIFFCHUNK);
 162                 break;
 163             }
 164             else if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 165                 bMoreData = FALSE;
 166             continue;
 167         default:
 168             break;
 169 #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 */
 170             switch (TWOCCFromFOURCC(This->CurrentChunk.fcc))
 171             {
 172             case cktypeDIBcompressed:
 173                 bSyncPoint = FALSE;
 174                 /* fall-through */
 175             case cktypeDIBbits:
 176                 /* FIXME: check that pin is of type video */
 177                 break;
 178             case cktypeWAVEbytes:
 179                 /* FIXME: check that pin is of type audio */
 180                 break;
 181             case cktypePALchange:
 182                 FIXME("handle palette change\n");
 183                 break;
 184             default:
 185                 FIXME("Skipping unknown chunk type: %s at file offset 0x%x\n", debugstr_an((LPSTR)&This->CurrentChunk.fcc, 4), (DWORD)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset));
 186                 if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 187                     bMoreData = FALSE;
 188                 continue;
 189             }
 190 #endif
 191         }
 192
 193         streamId = StreamFromFOURCC(This->CurrentChunk.fcc);
 194
 195         if (streamId > This->Parser.cStreams)
 196         {
 197             ERR("Corrupted AVI file (contains stream id %d, but supposed to only have %d streams)\n", streamId, This->Parser.cStreams);
 198             hr = E_FAIL;
 199             break;
 200         }
 201
 202         pOutputPin = (Parser_OutputPin *)This->Parser.ppPins[streamId + 1];
 203
 204         if (!This->pCurrentSample)
 205         {
 206             /* cache media sample until it is ready to be despatched
 207              * (i.e. we reach the end of the chunk) */
 208             hr = OutputPin_GetDeliveryBuffer(&pOutputPin->pin, &This->pCurrentSample, NULL, NULL, 0);
 209
 210             if (SUCCEEDED(hr))
 211             {
 212                 hr = IMediaSample_SetActualDataLength(This->pCurrentSample, 0);
 213                 assert(hr == S_OK);
 214             }
 215             else
 216             {
 217                 TRACE("Skipping sending sample for stream %02d due to error (%x)\n", streamId, hr);
 218                 This->pCurrentSample = NULL;
 219                 if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 220                     bMoreData = FALSE;
 221                 continue;
 222             }
 223         }
 224
 225         hr = IMediaSample_GetPointer(This->pCurrentSample, &pbDstStream);
 226
 227         if (SUCCEEDED(hr))
 228         {
 229             cbDstStream = IMediaSample_GetSize(This->pCurrentSample);
 230
 231             chunk_remaining_bytes = (long)BYTES_FROM_MEDIATIME(This->CurrentChunkOffset + MEDIATIME_FROM_BYTES(This->CurrentChunk.cb + sizeof(RIFFCHUNK)) - tStart) - offset_src;
 232
 233             assert(chunk_remaining_bytes >= 0);
 234             assert(chunk_remaining_bytes <= cbDstStream - IMediaSample_GetActualDataLength(This->pCurrentSample));
 235
 236             /* trace removed for performance reasons */
 237 /*          TRACE("chunk_remaining_bytes: 0x%x, cbSrcStream: 0x%x, offset_src: 0x%x\n", chunk_remaining_bytes, cbSrcStream, offset_src); */
 238         }
 239
 240         if (chunk_remaining_bytes <= cbSrcStream - offset_src)
 241         {
 242             if (SUCCEEDED(hr))
 243             {
 244                 memcpy(pbDstStream + IMediaSample_GetActualDataLength(This->pCurrentSample), pbSrcStream + offset_src, chunk_remaining_bytes);
 245                 hr = IMediaSample_SetActualDataLength(This->pCurrentSample, chunk_remaining_bytes + IMediaSample_GetActualDataLength(This->pCurrentSample));
 246                 assert(hr == S_OK);
 247             }
 248
 249             if (SUCCEEDED(hr))
 250             {
 251                 REFERENCE_TIME tAviStart, tAviStop;
 252                 StreamData *stream = This->streams + streamId;
 253
 254                 /* FIXME: hack */
 255                 if (pOutputPin->dwSamplesProcessed == 0)
 256                     IMediaSample_SetDiscontinuity(This->pCurrentSample, TRUE);
 257
 258                 IMediaSample_SetSyncPoint(This->pCurrentSample, bSyncPoint);
 259
 260                 pOutputPin->dwSamplesProcessed++;
 261
 262                 if (stream->dwSampleSize)
 263                     tAviStart = (LONGLONG)ceil(10000000.0 * (float)(pOutputPin->dwSamplesProcessed - 1) * (float)IMediaSample_GetActualDataLength(This->pCurrentSample) / ((float)stream->dwSampleSize * stream->fSamplesPerSec));
 264                 else
 265                     tAviStart = (LONGLONG)ceil(10000000.0 * (float)(pOutputPin->dwSamplesProcessed - 1) / (float)stream->fSamplesPerSec);
 266                 if (stream->dwSampleSize)
 267                     tAviStop = (LONGLONG)ceil(10000000.0 * (float)pOutputPin->dwSamplesProcessed * (float)IMediaSample_GetActualDataLength(This->pCurrentSample) / ((float)stream->dwSampleSize * stream->fSamplesPerSec));
 268                 else
 269                     tAviStop = (LONGLONG)ceil(10000000.0 * (float)pOutputPin->dwSamplesProcessed / (float)stream->fSamplesPerSec);
 270
 271                 IMediaSample_SetTime(This->pCurrentSample, &tAviStart, &tAviStop);
 272
 273                 hr = OutputPin_SendSample(&pOutputPin->pin, This->pCurrentSample);
 274                 if (hr != S_OK && hr != VFW_E_NOT_CONNECTED)
 275                     ERR("Error sending sample (%x)\n", hr);
 276             }
 277
 278             if (This->pCurrentSample)
 279                 IMediaSample_Release(This->pCurrentSample);
 280
 281             This->pCurrentSample = NULL;
 282
 283             if (S_FALSE == AVISplitter_NextChunk(&This->CurrentChunkOffset, &This->CurrentChunk, &tStart, &tStop, pbSrcStream, FALSE))
 284                 bMoreData = FALSE;
 285         }
 286         else
 287         {
 288             if (SUCCEEDED(hr))
 289             {
 290                 memcpy(pbDstStream + IMediaSample_GetActualDataLength(This->pCurrentSample), pbSrcStream + offset_src, cbSrcStream - offset_src);
 291                 IMediaSample_SetActualDataLength(This->pCurrentSample, cbSrcStream - offset_src + IMediaSample_GetActualDataLength(This->pCurrentSample));
 292             }
 293             bMoreData = FALSE;
 294         }
 295     }
 296
 297 skip:
 298     if (tStop >= This->EndOfFile)
 299     {
 300         int i;
 301
 302         TRACE("End of file reached\n");
 303
 304         for (i = 0; i < This->Parser.cStreams; i++)
 305         {
 306             IPin* ppin;
 307             HRESULT hr;
 308
 309             TRACE("Send End Of Stream to output pin %d\n", i);
 310
 311             hr = IPin_ConnectedTo(This->Parser.ppPins[i+1], &ppin);
 312             if (SUCCEEDED(hr))
 313             {
 314                 hr = IPin_EndOfStream(ppin);
 315                 IPin_Release(ppin);
 316             }
 317             if (FAILED(hr))
 318             {
 319                 ERR("%x\n", hr);
 320                 break;
 321             }
 322         }
 323
 324         /* Force the pullpin thread to stop */
 325         hr = S_FALSE;
 326     }
 327
 328     return hr;
 329 }
 330
 331 static HRESULT AVISplitter_QueryAccept(LPVOID iface, const AM_MEDIA_TYPE * pmt)
 332 {
 333     if (IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream) && IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_Avi))
 334         return S_OK;
 335     return S_FALSE;
 336 }
 337
 338 static HRESULT AVISplitter_ProcessStreamList(AVISplitterImpl * This, const BYTE * pData, DWORD cb)
 339 {
 340     PIN_INFO piOutput;
 341     const RIFFCHUNK * pChunk;
 342     HRESULT hr;
 343     AM_MEDIA_TYPE amt;
 344     float fSamplesPerSec = 0.0f;
 345     DWORD dwSampleSize = 0;
 346     DWORD dwLength = 0;
 347     ALLOCATOR_PROPERTIES props;
 348     static const WCHAR wszStreamTemplate[] = {'S','t','r','e','a','m',' ','%','0','2','d',0};
 349     StreamData *stream;
 350
 351     props.cbAlign = 1;
 352     props.cbPrefix = 0;
 353     props.cbBuffer = 0x20000;
 354     props.cBuffers = 2;
 355
 356     ZeroMemory(&amt, sizeof(amt));
 357     piOutput.dir = PINDIR_OUTPUT;
 358     piOutput.pFilter = (IBaseFilter *)This;
 359     wsprintfW(piOutput.achName, wszStreamTemplate, This->Parser.cStreams);
 360
 361     for (pChunk = (const RIFFCHUNK *)pData;
 362          ((const BYTE *)pChunk >= pData) && ((const BYTE *)pChunk + sizeof(RIFFCHUNK) < pData + cb) && (pChunk->cb > 0);
 363          pChunk = (const RIFFCHUNK *)((const BYTE*)pChunk + sizeof(RIFFCHUNK) + pChunk->cb)
 364         )
 365     {
 366         switch (pChunk->fcc)
 367         {
 368         case ckidSTREAMHEADER:
 369             {
 370                 const AVISTREAMHEADER * pStrHdr = (const AVISTREAMHEADER *)pChunk;
 371                 TRACE("processing stream header\n");
 372
 373                 fSamplesPerSec = (float)pStrHdr->dwRate / (float)pStrHdr->dwScale;
 374
 375                 switch (pStrHdr->fccType)
 376                 {
 377                 case streamtypeVIDEO:
 378                     amt.formattype = FORMAT_VideoInfo;
 379                     amt.pbFormat = NULL;
 380                     amt.cbFormat = 0;
 381                     break;
 382                 case streamtypeAUDIO:
 383                     amt.formattype = FORMAT_WaveFormatEx;
 384                     break;
 385                 default:
 386                     amt.formattype = FORMAT_None;
 387                 }
 388                 amt.majortype = MEDIATYPE_Video;
 389                 amt.majortype.Data1 = pStrHdr->fccType;
 390                 amt.subtype = MEDIATYPE_Video;
 391                 amt.subtype.Data1 = pStrHdr->fccHandler;
 392                 TRACE("Subtype FCC: %.04s\n", (LPCSTR)&pStrHdr->fccHandler);
 393                 amt.lSampleSize = pStrHdr->dwSampleSize;
 394                 amt.bFixedSizeSamples = (amt.lSampleSize != 0);
 395
 396                 /* FIXME: Is this right? */
 397                 if (!amt.lSampleSize)
 398                 {
 399                     amt.lSampleSize = 1;
 400                     dwSampleSize = 1;
 401                 }
 402
 403                 amt.bTemporalCompression = IsEqualGUID(&amt.majortype, &MEDIATYPE_Video); /* FIXME? */
 404                 dwSampleSize = pStrHdr->dwSampleSize;
 405                 dwLength = pStrHdr->dwLength;
 406                 if (!dwLength)
 407                     dwLength = This->AviHeader.dwTotalFrames;
 408
 409                 if (pStrHdr->dwSuggestedBufferSize)
 410                     props.cbBuffer = pStrHdr->dwSuggestedBufferSize;
 411
 412                 break;
 413             }
 414         case ckidSTREAMFORMAT:
 415             TRACE("processing stream format data\n");
 416             if (IsEqualIID(&amt.formattype, &FORMAT_VideoInfo))
 417             {
 418                 VIDEOINFOHEADER * pvi;
 419                 /* biCompression member appears to override the value in the stream header.
 420                  * i.e. the stream header can say something completely contradictory to what
 421                  * is in the BITMAPINFOHEADER! */
 422                 if (pChunk->cb < sizeof(BITMAPINFOHEADER))
 423                 {
 424                     ERR("Not enough bytes for BITMAPINFOHEADER\n");
 425                     return E_FAIL;
 426                 }
 427                 amt.cbFormat = sizeof(VIDEOINFOHEADER) - sizeof(BITMAPINFOHEADER) + pChunk->cb;
 428                 amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
 429                 ZeroMemory(amt.pbFormat, amt.cbFormat);
 430                 pvi = (VIDEOINFOHEADER *)amt.pbFormat;
 431                 pvi->AvgTimePerFrame = (LONGLONG)(10000000.0 / fSamplesPerSec);
 432                 CopyMemory(&pvi->bmiHeader, (const BYTE *)(pChunk + 1), pChunk->cb);
 433                 if (pvi->bmiHeader.biCompression)
 434                     amt.subtype.Data1 = pvi->bmiHeader.biCompression;
 435             }
 436             else
 437             {
 438                 amt.cbFormat = pChunk->cb;
 439                 amt.pbFormat = CoTaskMemAlloc(amt.cbFormat);
 440                 CopyMemory(amt.pbFormat, (const BYTE *)(pChunk + 1), amt.cbFormat);
 441             }
 442             break;
 443         case ckidSTREAMNAME:
 444             TRACE("processing stream name\n");
 445             /* FIXME: this doesn't exactly match native version (we omit the "##)" prefix), but hey... */
 446             MultiByteToWideChar(CP_ACP, 0, (LPCSTR)(pChunk + 1), pChunk->cb, piOutput.achName, sizeof(piOutput.achName) / sizeof(piOutput.achName[0]));
 447             break;
 448         case ckidSTREAMHANDLERDATA:
 449             FIXME("process stream handler data\n");
 450             break;
 451         case ckidJUNK:
 452             TRACE("JUNK chunk ignored\n");
 453             break;
 454         default:
 455             FIXME("unknown chunk type \"%.04s\" ignored\n", (LPCSTR)&pChunk->fcc);
 456         }
 457     }
 458
 459     if (IsEqualGUID(&amt.formattype, &FORMAT_WaveFormatEx))
 460     {
 461         amt.subtype = MEDIATYPE_Video;
 462         amt.subtype.Data1 = ((WAVEFORMATEX *)amt.pbFormat)->wFormatTag;
 463     }
 464
 465     dump_AM_MEDIA_TYPE(&amt);
 466     TRACE("fSamplesPerSec = %f\n", (double)fSamplesPerSec);
 467     TRACE("dwSampleSize = %x\n", dwSampleSize);
 468     TRACE("dwLength = %x\n", dwLength);
 469     This->streams = CoTaskMemRealloc(This->streams, sizeof(StreamData) * (This->Parser.cStreams+1));
 470     stream = This->streams + This->Parser.cStreams;
 471     stream->fSamplesPerSec = fSamplesPerSec;
 472     stream->dwSampleSize = dwSampleSize;
 473     stream->dwLength = dwLength; /* TODO: Use this for mediaseeking */
 474
 475     hr = Parser_AddPin(&(This->Parser), &piOutput, &props, &amt);
 476
 477     return hr;
 478 }
 479
 480 /* FIXME: fix leaks on failure here */
 481 static HRESULT AVISplitter_InputPin_PreConnect(IPin * iface, IPin * pConnectPin)
 482 {
 483     PullPin *This = (PullPin *)iface;
 484     HRESULT hr;
 485     RIFFLIST list;
 486     LONGLONG pos = 0; /* in bytes */
 487     BYTE * pBuffer;
 488     RIFFCHUNK * pCurrentChunk;
 489     AVISplitterImpl * pAviSplit = (AVISplitterImpl *)This->pin.pinInfo.pFilter;
 490
 491     hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 492     pos += sizeof(list);
 493
 494     if (list.fcc != ckidRIFF)
 495     {
 496         ERR("Input stream not a RIFF file\n");
 497         return E_FAIL;
 498     }
 499     if (list.fccListType != ckidAVI)
 500     {
 501         ERR("Input stream not an AVI RIFF file\n");
 502         return E_FAIL;
 503     }
 504
 505     hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 506     if (list.fcc != ckidLIST)
 507     {
 508         ERR("Expected LIST chunk, but got %.04s\n", (LPSTR)&list.fcc);
 509         return E_FAIL;
 510     }
 511     if (list.fccListType != ckidHEADERLIST)
 512     {
 513         ERR("Header list expected. Got: %.04s\n", (LPSTR)&list.fccListType);
 514         return E_FAIL;
 515     }
 516
 517     pBuffer = HeapAlloc(GetProcessHeap(), 0, list.cb - sizeof(RIFFLIST) + sizeof(RIFFCHUNK));
 518     hr = IAsyncReader_SyncRead(This->pReader, pos + sizeof(list), list.cb - sizeof(RIFFLIST) + sizeof(RIFFCHUNK), pBuffer);
 519
 520     pAviSplit->AviHeader.cb = 0;
 521
 522     for (pCurrentChunk = (RIFFCHUNK *)pBuffer; (BYTE *)pCurrentChunk + sizeof(*pCurrentChunk) < pBuffer + list.cb; pCurrentChunk = (RIFFCHUNK *)(((BYTE *)pCurrentChunk) + sizeof(*pCurrentChunk) + pCurrentChunk->cb))
 523     {
 524         RIFFLIST * pList;
 525
 526         switch (pCurrentChunk->fcc)
 527         {
 528         case ckidMAINAVIHEADER:
 529             /* AVIMAINHEADER includes the structure that is pCurrentChunk at the moment */
 530             memcpy(&pAviSplit->AviHeader, pCurrentChunk, sizeof(pAviSplit->AviHeader));
 531             break;
 532         case ckidLIST:
 533             pList = (RIFFLIST *)pCurrentChunk;
 534             switch (pList->fccListType)
 535             {
 536             case ckidSTREAMLIST:
 537                 hr = AVISplitter_ProcessStreamList(pAviSplit, (BYTE *)pCurrentChunk + sizeof(RIFFLIST), pCurrentChunk->cb + sizeof(RIFFCHUNK) - sizeof(RIFFLIST));
 538                 break;
 539             case ckidODML:
 540                 FIXME("process ODML header\n");
 541                 break;
 542             }
 543             break;
 544         case ckidJUNK:
 545             /* ignore */
 546             break;
 547         default:
 548             FIXME("unrecognised header list type: %.04s\n", (LPSTR)&pCurrentChunk->fcc);
 549         }
 550     }
 551     HeapFree(GetProcessHeap(), 0, pBuffer);
 552
 553     if (pAviSplit->AviHeader.cb != sizeof(pAviSplit->AviHeader) - sizeof(RIFFCHUNK))
 554     {
 555         ERR("Avi Header wrong size!\n");
 556         return E_FAIL;
 557     }
 558
 559     pos += sizeof(RIFFCHUNK) + list.cb;
 560     hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 561
 562     while (list.fcc == ckidJUNK || (list.fcc == ckidLIST && list.fccListType == ckidINFO))
 563     {
 564         pos += sizeof(RIFFCHUNK) + list.cb;
 565         hr = IAsyncReader_SyncRead(This->pReader, pos, sizeof(list), (BYTE *)&list);
 566     }
 567
 568     if (list.fcc != ckidLIST)
 569     {
 570         ERR("Expected LIST, but got %.04s\n", (LPSTR)&list.fcc);
 571         return E_FAIL;
 572     }
 573     if (list.fccListType != ckidAVIMOVIE)
 574     {
 575         ERR("Expected AVI movie list, but got %.04s\n", (LPSTR)&list.fccListType);
 576         return E_FAIL;
 577     }
 578
 579     if (hr == S_OK)
 580     {
 581         pAviSplit->CurrentChunkOffset = MEDIATIME_FROM_BYTES(pos + sizeof(RIFFLIST));
 582         pAviSplit->EndOfFile = MEDIATIME_FROM_BYTES(pos + list.cb + sizeof(RIFFLIST));
 583         hr = IAsyncReader_SyncRead(This->pReader, BYTES_FROM_MEDIATIME(pAviSplit->CurrentChunkOffset), sizeof(pAviSplit->CurrentChunk), (BYTE *)&pAviSplit->CurrentChunk);
 584     }
 585
 586     if (hr != S_OK)
 587         return E_FAIL;
 588
 589     TRACE("AVI File ok\n");
 590
 591     return hr;
 592 }
 593
 594 static HRESULT AVISplitter_Cleanup(LPVOID iface)
 595 {
 596     AVISplitterImpl *This = (AVISplitterImpl*)iface;
 597
 598     TRACE("(%p)->()\n", This);
 599
 600     if (This->pCurrentSample)
 601         IMediaSample_Release(This->pCurrentSample);
 602     This->pCurrentSample = NULL;
 603
 604     return S_OK;
 605 }
 606
 607 HRESULT AVISplitter_create(IUnknown * pUnkOuter, LPVOID * ppv)
 608 {
 609     HRESULT hr;
 610     AVISplitterImpl * This;
 611
 612     TRACE("(%p, %p)\n", pUnkOuter, ppv);
 613
 614     *ppv = NULL;
 615
 616     if (pUnkOuter)
 617         return CLASS_E_NOAGGREGATION;
 618
 619     /* Note: This memory is managed by the transform filter once created */
 620     This = CoTaskMemAlloc(sizeof(AVISplitterImpl));
 621
 622     This->pCurrentSample = NULL;
 623     This->streams = NULL;
 624
 625     hr = Parser_Create(&(This->Parser), &CLSID_AviSplitter, AVISplitter_Sample, AVISplitter_QueryAccept, AVISplitter_InputPin_PreConnect, AVISplitter_Cleanup);
 626
 627     if (FAILED(hr))
 628         return hr;
 629
 630     *ppv = (LPVOID)This;
 631
 632     return hr;
 633 }