4 * Copyright 2003 Robert Shearman
5 * Copyright 2004-2005 Christian Costa
6 * Copyright 2007 Chris Robinson
7 * Copyright 2008 Maarten Lankhorst
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 #include "quartz_private.h"
28 #include "control_private.h"
37 #include "wine/unicode.h"
38 #include "wine/debug.h"
42 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
44 #define SEQUENCE_HEADER_CODE 0xB3
45 #define PACK_START_CODE 0xBA
47 #define SYSTEM_START_CODE 0xBB
48 #define AUDIO_ELEMENTARY_STREAM 0xC0
49 #define VIDEO_ELEMENTARY_STREAM 0xE0
51 #define MPEG_SYSTEM_HEADER 3
52 #define MPEG_VIDEO_HEADER 2
53 #define MPEG_AUDIO_HEADER 1
54 #define MPEG_NO_HEADER 0
56 #define SEEK_INTERVAL (ULONGLONG)(10 * 10000000) /* Add an entry every 10 seconds */
63 typedef struct MPEGSplitterImpl
72 /* Whether we just seeked (or started playing) */
77 struct seek_entry *seektable;
80 static inline MPEGSplitterImpl *impl_from_IMediaSeeking( IMediaSeeking *iface )
82 return (MPEGSplitterImpl *)((char*)iface - FIELD_OFFSET(MPEGSplitterImpl, Parser.sourceSeeking.lpVtbl));
85 static int MPEGSplitter_head_check(const BYTE *header)
87 /* If this is a possible start code, check for a system or video header */
88 if (header[0] == 0 && header[1] == 0 && header[2] == 1)
90 /* Check if we got a system or elementary stream start code */
91 if (header[3] == PACK_START_CODE ||
92 header[3] == VIDEO_ELEMENTARY_STREAM ||
93 header[3] == AUDIO_ELEMENTARY_STREAM)
94 return MPEG_SYSTEM_HEADER;
96 /* Check for a MPEG video sequence start code */
97 if (header[3] == SEQUENCE_HEADER_CODE)
98 return MPEG_VIDEO_HEADER;
101 /* This should give a good guess if we have an MPEG audio header */
102 if(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 &&
103 ((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf &&
104 ((header[2]>>2)&0x3) != 0x3)
105 return MPEG_AUDIO_HEADER;
108 return MPEG_NO_HEADER;
111 static const WCHAR wszAudioStream[] = {'A','u','d','i','o',0};
112 static const WCHAR wszVideoStream[] = {'V','i','d','e','o',0};
114 static const DWORD freqs[10] = { 44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000, 0 };
116 static const DWORD tabsel_123[2][3][16] = {
117 { {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,},
118 {0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,},
119 {0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} },
121 { {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,},
122 {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,},
123 {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} }
126 static HRESULT parse_header(BYTE *header, LONGLONG *plen, LONGLONG *pduration)
130 int bitrate_index, freq_index, lsf = 1, mpeg1, layer, padding, bitrate, length;
132 if (!(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 &&
133 ((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf &&
134 ((header[2]>>2)&0x3) != 0x3))
136 FIXME("Not a valid header: %02x:%02x\n", header[0], header[1]);
140 mpeg1 = (header[1]>>4)&0x1;
142 lsf = ((header[1]>>3)&0x1)^1;
144 layer = 4-((header[1]>>1)&0x3);
145 bitrate_index = ((header[2]>>4)&0xf);
146 freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6);
147 padding = ((header[2]>>1)&0x1);
149 bitrate = tabsel_123[lsf][layer-1][bitrate_index] * 1000;
150 if (!bitrate || layer != 3)
152 FIXME("Not a valid header: %02x:%02x:%02x:%02x\n", header[0], header[1], header[2], header[3]);
157 if (layer == 3 || layer == 2)
158 length = 144 * bitrate / freqs[freq_index] + padding;
160 length = 4 * (12 * bitrate / freqs[freq_index] + padding);
162 duration = (ULONGLONG)10000000 * (ULONGLONG)(length) / (ULONGLONG)(bitrate/8);
165 *pduration += duration;
169 static HRESULT FillBuffer(MPEGSplitterImpl *This, IMediaSample *pCurrentSample)
171 Parser_OutputPin * pOutputPin = (Parser_OutputPin*)This->Parser.ppPins[1];
173 LONGLONG pos = BYTES_FROM_MEDIATIME(This->Parser.pInputPin->rtNext);
174 LONGLONG time = This->position;
177 DWORD len = IMediaSample_GetActualDataLength(pCurrentSample);
179 TRACE("Source length: %u\n", len);
180 IMediaSample_GetPointer(pCurrentSample, &fbuf);
182 /* Find the next valid header.. it <SHOULD> be right here */
183 assert(parse_header(fbuf, &length, &This->position) == S_OK);
184 IMediaSample_SetActualDataLength(pCurrentSample, length);
186 /* Queue the next sample */
187 if (length + 4 == len)
189 PullPin *pin = This->Parser.pInputPin;
190 LONGLONG stop = BYTES_FROM_MEDIATIME(pin->rtStop);
193 memcpy(This->header, fbuf + length, 4);
194 while (FAILED(hr = parse_header(This->header, &length, NULL)))
196 memmove(This->header, This->header+1, 3);
199 IAsyncReader_SyncRead(pin->pReader, ++pos, 1, This->header + 3);
201 pin->rtNext = MEDIATIME_FROM_BYTES(pos);
205 /* Remove 4 for the last header, which should hopefully work */
206 IMediaSample *sample = NULL;
207 LONGLONG rtSampleStart = pin->rtNext - MEDIATIME_FROM_BYTES(4);
208 LONGLONG rtSampleStop = rtSampleStart + MEDIATIME_FROM_BYTES(length + 4);
210 if (rtSampleStop > pin->rtStop)
211 rtSampleStop = MEDIATIME_FROM_BYTES(ALIGNUP(BYTES_FROM_MEDIATIME(pin->rtStop), pin->cbAlign));
213 hr = IMemAllocator_GetBuffer(pin->pAlloc, &sample, NULL, NULL, 0);
216 IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop);
217 IMediaSample_SetPreroll(sample, 0);
218 IMediaSample_SetDiscontinuity(sample, 0);
219 IMediaSample_SetSyncPoint(sample, 1);
220 pin->rtCurrent = rtSampleStart;
221 pin->rtNext = rtSampleStop;
222 hr = IAsyncReader_Request(pin->pReader, sample, 0);
225 FIXME("o_Ox%08x\n", hr);
228 /* If not, we're presumably at the end of file */
230 TRACE("Media time : %u.%03u\n", (DWORD)(This->position/10000000), (DWORD)((This->position/10000)%1000));
232 IMediaSample_SetTime(pCurrentSample, &time, &This->position);
234 hr = BaseOutputPinImpl_Deliver((BaseOutputPin*)&pOutputPin->pin, pCurrentSample);
239 TRACE("Error sending sample (%x)\n", hr);
241 TRACE("S_FALSE (%d), holding\n", IMediaSample_GetActualDataLength(pCurrentSample));
248 static HRESULT MPEGSplitter_process_sample(LPVOID iface, IMediaSample * pSample, DWORD_PTR cookie)
250 MPEGSplitterImpl *This = iface;
252 DWORD cbSrcStream = 0;
253 REFERENCE_TIME tStart, tStop, tAviStart = This->position;
256 hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
259 cbSrcStream = IMediaSample_GetActualDataLength(pSample);
260 hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
263 /* Flush occurring */
264 if (cbSrcStream == 0)
266 FIXME(".. Why do I need you?\n");
270 /* trace removed for performance reasons */
271 /* TRACE("(%p), %llu -> %llu\n", pSample, tStart, tStop); */
273 /* Now, try to find a new header */
274 hr = FillBuffer(This, pSample);
277 WARN("Failed with hres: %08x!\n", hr);
279 /* Unset progression if denied! */
280 if (hr == VFW_E_WRONG_STATE || hr == S_FALSE)
282 memcpy(This->header, pbSrcStream, 4);
283 This->Parser.pInputPin->rtCurrent = tStart;
284 This->position = tAviStart;
288 if (BYTES_FROM_MEDIATIME(tStop) >= This->EndOfFile || This->position >= This->Parser.sourceSeeking.llStop)
292 TRACE("End of file reached\n");
294 for (i = 0; i < This->Parser.cStreams; i++)
298 hr = IPin_ConnectedTo(This->Parser.ppPins[i+1], &ppin);
301 hr = IPin_EndOfStream(ppin);
305 WARN("Error sending EndOfStream to pin %u (%x)\n", i, hr);
308 /* Force the pullpin thread to stop */
316 static HRESULT MPEGSplitter_query_accept(LPVOID iface, const AM_MEDIA_TYPE *pmt)
318 if (!IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream))
321 if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Audio))
324 if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Video))
325 FIXME("MPEG-1 video streams not yet supported.\n");
326 else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1System))
327 FIXME("MPEG-1 system streams not yet supported.\n");
328 else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1VideoCD))
329 FIXME("MPEG-1 VideoCD streams not yet supported.\n");
335 static HRESULT MPEGSplitter_init_audio(MPEGSplitterImpl *This, const BYTE *header, PIN_INFO *ppiOutput, AM_MEDIA_TYPE *pamt)
337 WAVEFORMATEX *format;
347 ZeroMemory(pamt, sizeof(*pamt));
348 ppiOutput->dir = PINDIR_OUTPUT;
349 ppiOutput->pFilter = (IBaseFilter*)This;
350 wsprintfW(ppiOutput->achName, wszAudioStream);
352 pamt->formattype = FORMAT_WaveFormatEx;
353 pamt->majortype = MEDIATYPE_Audio;
354 pamt->subtype = MEDIASUBTYPE_MPEG1AudioPayload;
356 pamt->lSampleSize = 0;
357 pamt->bFixedSizeSamples = FALSE;
358 pamt->bTemporalCompression = 0;
360 mpeg1 = (header[1]>>4)&0x1;
362 lsf = ((header[1]>>3)&0x1)^1;
364 layer = 4-((header[1]>>1)&0x3);
365 bitrate_index = ((header[2]>>4)&0xf);
366 freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6);
367 mode = ((header[3]>>6)&0x3);
368 mode_ext = ((header[3]>>4)&0x3);
369 emphasis = ((header[3]>>0)&0x3);
373 /* Set to highest bitrate so samples will fit in for sure */
374 FIXME("Variable-bitrate audio not fully supported.\n");
378 pamt->cbFormat = ((layer==3)? sizeof(MPEGLAYER3WAVEFORMAT) :
379 sizeof(MPEG1WAVEFORMAT));
380 pamt->pbFormat = CoTaskMemAlloc(pamt->cbFormat);
382 return E_OUTOFMEMORY;
383 ZeroMemory(pamt->pbFormat, pamt->cbFormat);
384 format = (WAVEFORMATEX*)pamt->pbFormat;
386 format->wFormatTag = ((layer == 3) ? WAVE_FORMAT_MPEGLAYER3 :
388 format->nChannels = ((mode == 3) ? 1 : 2);
389 format->nSamplesPerSec = freqs[freq_index];
390 format->nAvgBytesPerSec = tabsel_123[lsf][layer-1][bitrate_index] * 1000 / 8;
393 format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
394 (format->nSamplesPerSec<<lsf) + 1;
396 format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
397 format->nSamplesPerSec + 1;
399 format->nBlockAlign = 4 * (format->nAvgBytesPerSec * 8 * 12 / format->nSamplesPerSec + 1);
401 format->wBitsPerSample = 0;
405 MPEGLAYER3WAVEFORMAT *mp3format = (MPEGLAYER3WAVEFORMAT*)format;
407 format->cbSize = MPEGLAYER3_WFX_EXTRA_BYTES;
409 mp3format->wID = MPEGLAYER3_ID_MPEG;
410 mp3format->fdwFlags = MPEGLAYER3_FLAG_PADDING_ON;
411 mp3format->nBlockSize = format->nBlockAlign;
412 mp3format->nFramesPerBlock = 1;
414 /* Beware the evil magic numbers. This struct is apparently horribly
415 * under-documented, and the only references I could find had it being
416 * set to this with no real explanation. It works fine though, so I'm
417 * not complaining (yet).
419 mp3format->nCodecDelay = 1393;
423 MPEG1WAVEFORMAT *mpgformat = (MPEG1WAVEFORMAT*)format;
427 mpgformat->fwHeadLayer = ((layer == 1) ? ACM_MPEG_LAYER1 :
428 ((layer == 2) ? ACM_MPEG_LAYER2 :
430 mpgformat->dwHeadBitrate = format->nAvgBytesPerSec * 8;
431 mpgformat->fwHeadMode = ((mode == 3) ? ACM_MPEG_SINGLECHANNEL :
432 ((mode == 2) ? ACM_MPEG_DUALCHANNEL :
433 ((mode == 1) ? ACM_MPEG_JOINTSTEREO :
435 mpgformat->fwHeadModeExt = ((mode == 1) ? 0x0F : (1<<mode_ext));
436 mpgformat->wHeadEmphasis = emphasis + 1;
437 mpgformat->fwHeadFlags = ACM_MPEG_ID_MPEG1;
439 pamt->subtype.Data1 = format->wFormatTag;
441 TRACE("MPEG audio stream detected:\n"
444 "\tChannels: %d (%d)\n"
445 "\tBytesPerSec: %d\n",
446 layer, format->wFormatTag, format->nSamplesPerSec,
447 format->nChannels, mode, format->nAvgBytesPerSec);
449 dump_AM_MEDIA_TYPE(pamt);
455 static HRESULT MPEGSplitter_pre_connect(IPin *iface, IPin *pConnectPin, ALLOCATOR_PROPERTIES *props)
457 PullPin *pPin = (PullPin *)iface;
458 MPEGSplitterImpl *This = (MPEGSplitterImpl*)pPin->pin.pinInfo.pFilter;
460 LONGLONG pos = 0; /* in bytes */
463 LONGLONG total, avail;
467 IAsyncReader_Length(pPin->pReader, &total, &avail);
468 This->EndOfFile = total;
470 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header);
474 /* Skip ID3 v2 tag, if any */
475 if (SUCCEEDED(hr) && !memcmp("ID3", header, 3))
478 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 6, header + 4);
482 TRACE("Found ID3 v2.%d.%d\n", header[3], header[4]);
483 length = (header[6] & 0x7F) << 21;
484 length += (header[7] & 0x7F) << 14;
485 length += (header[8] & 0x7F) << 7;
486 length += (header[9] & 0x7F);
487 TRACE("Length: %u\n", length);
490 /* Read the real header for the mpeg splitter */
491 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header);
494 TRACE("%x:%x:%x:%x\n", header[0], header[1], header[2], header[3]);
497 while(SUCCEEDED(hr) && !(streamtype=MPEGSplitter_head_check(header)))
499 TRACE("%x:%x:%x:%x\n", header[0], header[1], header[2], header[3]);
500 /* No valid header yet; shift by a byte and check again */
501 memmove(header, header+1, 3);
502 hr = IAsyncReader_SyncRead(pPin->pReader, pos++, 1, header + 3);
507 This->begin_offset = pos;
508 memcpy(This->header, header, 4);
510 This->seektable[0].bytepos = pos;
511 This->seektable[0].timepos = 0;
515 case MPEG_AUDIO_HEADER:
517 LONGLONG duration = 0;
518 DWORD last_entry = 0;
520 DWORD ticks = GetTickCount();
522 hr = MPEGSplitter_init_audio(This, header, &piOutput, &amt);
525 WAVEFORMATEX *format = (WAVEFORMATEX*)amt.pbFormat;
529 /* Make the output buffer a multiple of the frame size */
530 props->cbBuffer = 0x4000 / format->nBlockAlign *
533 hr = Parser_AddPin(&(This->Parser), &piOutput, props, &amt);
539 CoTaskMemFree(amt.pbFormat);
540 ERR("Could not create pin for MPEG audio stream (%x)\n", hr);
544 /* Check for idv1 tag, and remove it from stream if found */
545 hr = IAsyncReader_SyncRead(pPin->pReader, This->EndOfFile-128, 3, header+4);
548 if (!strncmp((char*)header+4, "TAG", 3))
549 This->EndOfFile -= 128;
550 This->Parser.pInputPin->rtStop = MEDIATIME_FROM_BYTES(This->EndOfFile);
551 This->Parser.pInputPin->rtStart = This->Parser.pInputPin->rtCurrent = MEDIATIME_FROM_BYTES(This->begin_offset);
553 /* http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm has a whole read up on audio headers */
554 while (pos + 3 < This->EndOfFile)
557 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header);
560 while (parse_header(header, &length, &duration))
562 /* No valid header yet; shift by a byte and check again */
563 memmove(header, header+1, 3);
564 hr = IAsyncReader_SyncRead(pPin->pReader, pos++, 1, header + 3);
565 if (hr != S_OK || This->EndOfFile - pos < 4)
570 if (This->seektable && (duration / SEEK_INTERVAL) > last_entry)
572 if (last_entry + 1 > duration / SEEK_INTERVAL)
574 ERR("Somehow skipped %d interval lengths instead of 1\n", (DWORD)(duration/SEEK_INTERVAL) - (last_entry + 1));
578 TRACE("Entry: %u\n", last_entry);
579 if (last_entry >= This->seek_entries)
581 This->seek_entries += 64;
582 This->seektable = CoTaskMemRealloc(This->seektable, (This->seek_entries)*sizeof(struct seek_entry));
584 This->seektable[last_entry].bytepos = pos;
585 This->seektable[last_entry].timepos = duration;
588 TRACE("Pos: %x%08x/%x%08x\n", (DWORD)(pos >> 32), (DWORD)pos, (DWORD)(This->EndOfFile>>32), (DWORD)This->EndOfFile);
591 TRACE("Duration: %d seconds\n", (DWORD)(duration / 10000000));
592 TRACE("Parsing took %u ms\n", GetTickCount() - ticks);
593 This->duration = duration;
595 This->Parser.sourceSeeking.llCurrent = 0;
596 This->Parser.sourceSeeking.llDuration = duration;
597 This->Parser.sourceSeeking.llStop = duration;
600 case MPEG_VIDEO_HEADER:
601 FIXME("MPEG video processing not yet supported!\n");
604 case MPEG_SYSTEM_HEADER:
605 FIXME("MPEG system streams not yet supported!\n");
617 static HRESULT MPEGSplitter_cleanup(LPVOID iface)
619 MPEGSplitterImpl *This = iface;
621 TRACE("(%p)\n", This);
626 static HRESULT WINAPI MPEGSplitter_seek(IMediaSeeking *iface)
628 MPEGSplitterImpl *This = impl_from_IMediaSeeking(iface);
629 PullPin *pPin = This->Parser.pInputPin;
630 LONGLONG newpos, timepos, bytepos;
634 newpos = This->Parser.sourceSeeking.llCurrent;
636 if (newpos > This->duration)
638 WARN("Requesting position %x%08x beyond end of stream %x%08x\n", (DWORD)(newpos>>32), (DWORD)newpos, (DWORD)(This->duration>>32), (DWORD)This->duration);
642 if (This->position/1000000 == newpos/1000000)
644 TRACE("Requesting position %x%08x same as current position %x%08x\n", (DWORD)(newpos>>32), (DWORD)newpos, (DWORD)(This->position>>32), (DWORD)This->position);
648 /* Position, cached */
649 bytepos = This->seektable[newpos / SEEK_INTERVAL].bytepos;
650 timepos = This->seektable[newpos / SEEK_INTERVAL].timepos;
652 hr = IAsyncReader_SyncRead(pPin->pReader, bytepos, 4, header);
653 while (bytepos + 3 < This->EndOfFile)
656 hr = IAsyncReader_SyncRead(pPin->pReader, bytepos, 4, header);
657 if (hr != S_OK || timepos >= newpos)
660 while (parse_header(header, &length, &timepos) && bytepos + 3 < This->EndOfFile)
662 /* No valid header yet; shift by a byte and check again */
663 memmove(header, header+1, 3);
664 hr = IAsyncReader_SyncRead(pPin->pReader, ++bytepos, 1, header + 3);
669 TRACE("Pos: %x%08x/%x%08x\n", (DWORD)(bytepos >> 32), (DWORD)bytepos, (DWORD)(This->EndOfFile>>32), (DWORD)This->EndOfFile);
674 PullPin *pin = This->Parser.pInputPin;
677 TRACE("Moving sound to %08u bytes!\n", (DWORD)bytepos);
679 EnterCriticalSection(&pin->thread_lock);
680 IPin_BeginFlush((IPin *)pin);
682 /* Make sure this is done while stopped, BeginFlush takes care of this */
683 EnterCriticalSection(&This->Parser.filter.csFilter);
684 memcpy(This->header, header, 4);
685 IPin_ConnectedTo(This->Parser.ppPins[1], &victim);
688 IPin_NewSegment(victim, newpos, This->duration, pin->dRate);
689 IPin_Release(victim);
692 pin->rtStart = pin->rtCurrent = MEDIATIME_FROM_BYTES(bytepos);
693 pin->rtStop = MEDIATIME_FROM_BYTES((REFERENCE_TIME)This->EndOfFile);
695 This->position = newpos;
696 LeaveCriticalSection(&This->Parser.filter.csFilter);
698 TRACE("Done flushing\n");
699 IPin_EndFlush((IPin *)pin);
700 LeaveCriticalSection(&pin->thread_lock);
705 static HRESULT MPEGSplitter_disconnect(LPVOID iface)
707 /* TODO: Find memory leaks etc */
711 static HRESULT MPEGSplitter_first_request(LPVOID iface)
713 MPEGSplitterImpl *This = iface;
714 PullPin *pin = This->Parser.pInputPin;
717 IMediaSample *sample;
719 TRACE("Seeking? %d\n", This->seek);
720 assert(parse_header(This->header, &length, NULL) == S_OK);
722 if (pin->rtCurrent >= pin->rtStop)
724 /* Last sample has already been queued, request nothing more */
729 hr = IMemAllocator_GetBuffer(pin->pAlloc, &sample, NULL, NULL, 0);
731 pin->rtNext = pin->rtCurrent;
734 LONGLONG rtSampleStart = pin->rtNext;
735 /* Add 4 for the next header, which should hopefully work */
736 LONGLONG rtSampleStop = rtSampleStart + MEDIATIME_FROM_BYTES(length + 4);
738 if (rtSampleStop > pin->rtStop)
739 rtSampleStop = MEDIATIME_FROM_BYTES(ALIGNUP(BYTES_FROM_MEDIATIME(pin->rtStop), pin->cbAlign));
741 hr = IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop);
743 pin->rtCurrent = pin->rtNext;
744 pin->rtNext = rtSampleStop;
746 IMediaSample_SetPreroll(sample, FALSE);
747 IMediaSample_SetDiscontinuity(sample, This->seek);
748 IMediaSample_SetSyncPoint(sample, 1);
751 hr = IAsyncReader_Request(pin->pReader, sample, 0);
754 ERR("Horsemen of the apocalypse came to bring error 0x%08x\n", hr);
759 static const IBaseFilterVtbl MPEGSplitter_Vtbl =
761 Parser_QueryInterface,
769 Parser_SetSyncSource,
770 Parser_GetSyncSource,
773 Parser_QueryFilterInfo,
774 Parser_JoinFilterGraph,
775 Parser_QueryVendorInfo
778 HRESULT MPEGSplitter_create(IUnknown * pUnkOuter, LPVOID * ppv)
780 MPEGSplitterImpl *This;
783 TRACE("(%p, %p)\n", pUnkOuter, ppv);
788 return CLASS_E_NOAGGREGATION;
790 This = CoTaskMemAlloc(sizeof(MPEGSplitterImpl));
792 return E_OUTOFMEMORY;
794 ZeroMemory(This, sizeof(MPEGSplitterImpl));
795 This->seektable = CoTaskMemAlloc(sizeof(struct seek_entry) * 64);
796 if (!This->seektable)
799 return E_OUTOFMEMORY;
801 This->seek_entries = 64;
803 hr = Parser_Create(&(This->Parser), &MPEGSplitter_Vtbl, &CLSID_MPEG1Splitter, MPEGSplitter_process_sample, MPEGSplitter_query_accept, MPEGSplitter_pre_connect, MPEGSplitter_cleanup, MPEGSplitter_disconnect, MPEGSplitter_first_request, NULL, NULL, MPEGSplitter_seek, NULL);
811 /* Note: This memory is managed by the parser filter once created */