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
66 IMediaSample *pCurrentSample;
72 DWORD remaining_bytes;
75 struct seek_entry *seektable;
78 static int MPEGSplitter_head_check(const BYTE *header)
80 /* If this is a possible start code, check for a system or video header */
81 if (header[0] == 0 && header[1] == 0 && header[2] == 1)
83 /* Check if we got a system or elementary stream start code */
84 if (header[3] == PACK_START_CODE ||
85 header[3] == VIDEO_ELEMENTARY_STREAM ||
86 header[3] == AUDIO_ELEMENTARY_STREAM)
87 return MPEG_SYSTEM_HEADER;
89 /* Check for a MPEG video sequence start code */
90 if (header[3] == SEQUENCE_HEADER_CODE)
91 return MPEG_VIDEO_HEADER;
94 /* This should give a good guess if we have an MPEG audio header */
95 if(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 &&
96 ((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf &&
97 ((header[2]>>2)&0x3) != 0x3)
98 return MPEG_AUDIO_HEADER;
101 return MPEG_NO_HEADER;
104 static const WCHAR wszAudioStream[] = {'A','u','d','i','o',0};
105 static const WCHAR wszVideoStream[] = {'V','i','d','e','o',0};
107 static const DWORD freqs[10] = { 44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000, 0 };
109 static const DWORD tabsel_123[2][3][16] = {
110 { {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,},
111 {0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,},
112 {0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} },
114 { {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,},
115 {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,},
116 {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} }
120 static HRESULT parse_header(BYTE *header, LONGLONG *plen, LONGLONG *pduration)
122 LONGLONG duration = *pduration;
124 int bitrate_index, freq_index, mode_ext, emphasis, lsf = 1, mpeg1, layer, mode, padding, bitrate, length;
126 if (!(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 &&
127 ((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf &&
128 ((header[2]>>2)&0x3) != 0x3))
130 FIXME("Not a valid header: %02x:%02x\n", header[0], header[1]);
134 mpeg1 = (header[1]>>4)&0x1;
136 lsf = ((header[1]>>3)&0x1)^1;
138 layer = 4-((header[1]>>1)&0x3);
139 bitrate_index = ((header[2]>>4)&0xf);
140 freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6);
141 padding = ((header[2]>>1)&0x1);
142 mode = ((header[3]>>6)&0x3);
143 mode_ext = ((header[3]>>4)&0x3);
144 emphasis = ((header[3]>>0)&0x3);
146 bitrate = tabsel_123[lsf][layer-1][bitrate_index] * 1000;
147 if (!bitrate || layer != 3)
149 FIXME("Not a valid header: %02x:%02x:%02x:%02x\n", header[0], header[1], header[2], header[3]);
154 if (layer == 3 || layer == 2)
155 length = 144 * bitrate / freqs[freq_index] + padding;
157 length = 4 * (12 * bitrate / freqs[freq_index] + padding);
159 duration = (ULONGLONG)10000000 * (ULONGLONG)(length) / (ULONGLONG)(bitrate/8);
161 *pduration += duration;
166 static void skip_data(BYTE** from, DWORD *flen, DWORD amount)
175 static HRESULT copy_data(IMediaSample *to, BYTE** from, DWORD *flen, DWORD amount)
179 DWORD oldlength = IMediaSample_GetActualDataLength(to);
181 hr = IMediaSample_SetActualDataLength(to, oldlength + amount);
184 if (!oldlength || oldlength <= 4)
185 WARN("Could not set require length\n");
189 IMediaSample_GetPointer(to, &ptr);
190 memcpy(ptr + oldlength, *from, amount);
191 skip_data(from, flen, amount);
195 static HRESULT FillBuffer(MPEGSplitterImpl *This, BYTE** fbuf, DWORD *flen, IMediaSample *pCurrentSample)
197 Parser_OutputPin * pOutputPin = (Parser_OutputPin*)This->Parser.ppPins[1];
201 LONGLONG time = This->position, sampleduration = 0;
202 DWORD extrasamples = 2;
204 TRACE("Source length: %u, skip length: %u, remaining: %u\n", *flen, This->skipbytes, This->remaining_bytes);
206 /* Case where bytes are skipped */
209 DWORD skip = min(This->skipbytes, *flen);
210 skip_data(fbuf, flen, skip);
211 This->skipbytes -= skip;
215 /* Case where there is already an output sample being held */
216 if (This->remaining_bytes)
218 DWORD towrite = min(This->remaining_bytes, *flen);
221 hr = copy_data(pCurrentSample, fbuf, flen, towrite);
224 WARN("Could not resize sample: %08x\n", hr);
228 This->remaining_bytes -= towrite;
229 if (This->remaining_bytes)
232 /* Restore the time in the time variable. This->position now points
233 * to the NEW timestamp which is slightly off
235 IMediaSample_GetTime(pCurrentSample, &time, &foo);
237 /* Optimize: Try appending more samples to the stream */
241 /* Special case, last source sample might (or might not have) had a header, and now we want to retrieve it */
242 dlen = IMediaSample_GetActualDataLength(pCurrentSample);
243 if (dlen > 0 && dlen < 4)
248 /* Shoot anyone with a small sample! */
251 hr = IMediaSample_GetPointer(pCurrentSample, &header);
254 hr = IMediaSample_SetActualDataLength(pCurrentSample, 7);
258 WARN("Could not resize sample: %08x\n", hr);
262 memcpy(header + dlen, *fbuf, 6 - dlen);
264 while (FAILED(parse_header(header+attempts, &length, &This->position)) && attempts < dlen)
269 /* No header found */
270 if (attempts == dlen)
272 hr = IMediaSample_SetActualDataLength(pCurrentSample, 0);
276 IMediaSample_SetActualDataLength(pCurrentSample, 4);
277 IMediaSample_SetTime(pCurrentSample, &time, &This->position);
279 /* Move header back to beginning */
281 memmove(header, header+attempts, 4);
283 This->remaining_bytes = length - 4;
284 *flen -= (4 - dlen + attempts);
285 *fbuf += (4 - dlen + attempts);
289 /* Destination sample should contain no data! But the source sample should */
293 /* Find the next valid header.. it <SHOULD> be right here */
294 while (*flen > 3 && FAILED(parse_header(*fbuf, &length, &This->position)))
296 skip_data(fbuf, flen, 1);
299 /* Uh oh, no header found! */
303 hr = copy_data(pCurrentSample, fbuf, flen, *flen);
307 IMediaSample_SetTime(pCurrentSample, &time, &This->position);
311 /* Partial copy: Copy 4 bytes, the rest will be copied by the logic for This->remaining_bytes */
312 This->remaining_bytes = length - 4;
313 copy_data(pCurrentSample, fbuf, flen, 4);
317 hr = copy_data(pCurrentSample, fbuf, flen, length);
320 WARN("Couldn't set data size to %x%08x\n", (DWORD)(length >> 32), (DWORD)length);
321 This->skipbytes = length;
326 /* Optimize: Send multiple samples! */
327 while (extrasamples--)
332 if (FAILED(parse_header(*fbuf, &length, &sampleduration)))
338 if (FAILED(copy_data(pCurrentSample, fbuf, flen, length)))
341 This->position += sampleduration;
343 IMediaSample_SetTime(pCurrentSample, &time, &This->position);
345 TRACE("Media time: %u.%03u\n", (DWORD)(This->position/10000000), (DWORD)((This->position/10000)%1000));
347 hr = OutputPin_SendSample(&pOutputPin->pin, pCurrentSample);
352 TRACE("Error sending sample (%x)\n", hr);
354 TRACE("S_FALSE (%d), holding\n", IMediaSample_GetActualDataLength(This->pCurrentSample));
358 IMediaSample_Release(pCurrentSample);
359 This->pCurrentSample = NULL;
364 static HRESULT MPEGSplitter_process_sample(LPVOID iface, IMediaSample * pSample)
366 MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface;
368 DWORD cbSrcStream = 0;
369 REFERENCE_TIME tStart, tStop;
370 Parser_OutputPin * pOutputPin;
373 pOutputPin = (Parser_OutputPin*)This->Parser.ppPins[1];
375 hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
378 cbSrcStream = IMediaSample_GetActualDataLength(pSample);
379 hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
382 /* trace removed for performance reasons */
383 /* TRACE("(%p), %llu -> %llu\n", pSample, tStart, tStop); */
385 /* Try to get rid of current sample, if any */
386 if (This->pCurrentSample && !This->skipbytes && !This->remaining_bytes && IMediaSample_GetActualDataLength(This->pCurrentSample) > 4)
388 Parser_OutputPin * pOutputPin = (Parser_OutputPin*)This->Parser.ppPins[1];
389 IMediaSample *pCurrentSample = This->pCurrentSample;
392 /* Unset advancement */
393 This->Parser.pInputPin->rtCurrent -= MEDIATIME_FROM_BYTES(cbSrcStream);
395 hr = OutputPin_SendSample(&pOutputPin->pin, pCurrentSample);
400 IMediaSample_Release(This->pCurrentSample);
401 This->pCurrentSample = NULL;
403 This->Parser.pInputPin->rtCurrent += MEDIATIME_FROM_BYTES(cbSrcStream);
406 /* Now, try to find a new header */
407 while (cbSrcStream > 0)
409 if (!This->pCurrentSample)
411 if (FAILED(hr = OutputPin_GetDeliveryBuffer(&pOutputPin->pin, &This->pCurrentSample, NULL, NULL, 0)))
413 TRACE("Failed with hres: %08x!\n", hr);
417 IMediaSample_SetTime(This->pCurrentSample, NULL, NULL);
418 if (FAILED(hr = IMediaSample_SetActualDataLength(This->pCurrentSample, 0)))
420 IMediaSample_SetSyncPoint(This->pCurrentSample, TRUE);
421 IMediaSample_SetDiscontinuity(This->pCurrentSample, This->seek);
424 hr = FillBuffer(This, &pbSrcStream, &cbSrcStream, This->pCurrentSample);
428 /* We still have our sample! Do damage control and send it next round */
431 WARN("Failed with hres: %08x!\n", hr);
432 This->skipbytes += This->remaining_bytes;
433 This->remaining_bytes = 0;
435 This->Parser.pInputPin->rtCurrent = MEDIATIME_FROM_BYTES(BYTES_FROM_MEDIATIME(tStop) - cbSrcStream);
437 /* If set to S_FALSE we keep the sample, to transmit it next time */
438 if (hr != S_FALSE && This->pCurrentSample)
440 IMediaSample_SetActualDataLength(This->pCurrentSample, 0);
441 IMediaSample_Release(This->pCurrentSample);
442 This->pCurrentSample = NULL;
445 /* Sample was rejected because of whatever reason (paused/flushing/etc), no need to terminate the processing */
451 if (BYTES_FROM_MEDIATIME(tStop) >= This->EndOfFile || This->position >= This->Parser.mediaSeeking.llStop)
455 TRACE("End of file reached\n");
457 for (i = 0; i < This->Parser.cStreams; i++)
461 hr = IPin_ConnectedTo(This->Parser.ppPins[i+1], &ppin);
464 hr = IPin_EndOfStream(ppin);
468 WARN("Error sending EndOfStream to pin %d (%x)\n", i, hr);
471 /* Force the pullpin thread to stop */
479 static HRESULT MPEGSplitter_query_accept(LPVOID iface, const AM_MEDIA_TYPE *pmt)
481 if (!IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream))
484 if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Audio))
487 if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Video))
488 FIXME("MPEG-1 video streams not yet supported.\n");
489 else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1System))
490 FIXME("MPEG-1 system streams not yet supported.\n");
491 else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1VideoCD))
492 FIXME("MPEG-1 VideoCD streams not yet supported.\n");
498 static HRESULT MPEGSplitter_init_audio(MPEGSplitterImpl *This, const BYTE *header, PIN_INFO *ppiOutput, AM_MEDIA_TYPE *pamt)
500 WAVEFORMATEX *format;
510 ZeroMemory(pamt, sizeof(*pamt));
511 ppiOutput->dir = PINDIR_OUTPUT;
512 ppiOutput->pFilter = (IBaseFilter*)This;
513 wsprintfW(ppiOutput->achName, wszAudioStream);
515 pamt->formattype = FORMAT_WaveFormatEx;
516 pamt->majortype = MEDIATYPE_Audio;
517 pamt->subtype = MEDIASUBTYPE_MPEG1AudioPayload;
519 pamt->lSampleSize = 0;
520 pamt->bFixedSizeSamples = FALSE;
521 pamt->bTemporalCompression = 0;
523 mpeg1 = (header[1]>>4)&0x1;
525 lsf = ((header[1]>>3)&0x1)^1;
527 layer = 4-((header[1]>>1)&0x3);
528 bitrate_index = ((header[2]>>4)&0xf);
529 freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6);
530 mode = ((header[3]>>6)&0x3);
531 mode_ext = ((header[3]>>4)&0x3);
532 emphasis = ((header[3]>>0)&0x3);
536 /* Set to highest bitrate so samples will fit in for sure */
537 FIXME("Variable-bitrate audio not fully supported.\n");
541 pamt->cbFormat = ((layer==3)? sizeof(MPEGLAYER3WAVEFORMAT) :
542 sizeof(MPEG1WAVEFORMAT));
543 pamt->pbFormat = CoTaskMemAlloc(pamt->cbFormat);
545 return E_OUTOFMEMORY;
546 ZeroMemory(pamt->pbFormat, pamt->cbFormat);
547 format = (WAVEFORMATEX*)pamt->pbFormat;
549 format->wFormatTag = ((layer == 3) ? WAVE_FORMAT_MPEGLAYER3 :
551 format->nChannels = ((mode == 3) ? 1 : 2);
552 format->nSamplesPerSec = freqs[freq_index];
553 format->nAvgBytesPerSec = tabsel_123[lsf][layer-1][bitrate_index] * 1000 / 8;
556 format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
557 (format->nSamplesPerSec<<lsf) + 1;
559 format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
560 format->nSamplesPerSec + 1;
562 format->nBlockAlign = 4 * (format->nAvgBytesPerSec * 8 * 12 / format->nSamplesPerSec + 1);
564 format->wBitsPerSample = 0;
568 MPEGLAYER3WAVEFORMAT *mp3format = (MPEGLAYER3WAVEFORMAT*)format;
570 format->cbSize = MPEGLAYER3_WFX_EXTRA_BYTES;
572 mp3format->wID = MPEGLAYER3_ID_MPEG;
573 mp3format->fdwFlags = MPEGLAYER3_FLAG_PADDING_ON;
574 mp3format->nBlockSize = format->nBlockAlign;
575 mp3format->nFramesPerBlock = 1;
577 /* Beware the evil magic numbers. This struct is apparently horribly
578 * under-documented, and the only references I could find had it being
579 * set to this with no real explanation. It works fine though, so I'm
580 * not complaining (yet).
582 mp3format->nCodecDelay = 1393;
586 MPEG1WAVEFORMAT *mpgformat = (MPEG1WAVEFORMAT*)format;
590 mpgformat->fwHeadLayer = ((layer == 1) ? ACM_MPEG_LAYER1 :
591 ((layer == 2) ? ACM_MPEG_LAYER2 :
593 mpgformat->dwHeadBitrate = format->nAvgBytesPerSec * 8;
594 mpgformat->fwHeadMode = ((mode == 3) ? ACM_MPEG_SINGLECHANNEL :
595 ((mode == 2) ? ACM_MPEG_DUALCHANNEL :
596 ((mode == 1) ? ACM_MPEG_JOINTSTEREO :
598 mpgformat->fwHeadModeExt = ((mode == 1) ? 0x0F : (1<<mode_ext));
599 mpgformat->wHeadEmphasis = emphasis + 1;
600 mpgformat->fwHeadFlags = ACM_MPEG_ID_MPEG1;
602 pamt->subtype.Data1 = format->wFormatTag;
604 TRACE("MPEG audio stream detected:\n"
607 "\tChannels: %d (%d)\n"
608 "\tBytesPerSec: %d\n",
609 layer, format->wFormatTag, format->nSamplesPerSec,
610 format->nChannels, mode, format->nAvgBytesPerSec);
612 dump_AM_MEDIA_TYPE(pamt);
618 static HRESULT MPEGSplitter_pre_connect(IPin *iface, IPin *pConnectPin)
620 PullPin *pPin = (PullPin *)iface;
621 MPEGSplitterImpl *This = (MPEGSplitterImpl*)pPin->pin.pinInfo.pFilter;
622 ALLOCATOR_PROPERTIES props;
624 LONGLONG pos = 0; /* in bytes */
627 LONGLONG total, avail;
631 IAsyncReader_Length(pPin->pReader, &total, &avail);
632 This->EndOfFile = total;
634 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header);
638 /* Skip ID3 v2 tag, if any */
639 if (SUCCEEDED(hr) && !strncmp("ID3", (char*)header, 3))
642 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 6, header + 4);
646 TRACE("Found ID3 v2.%d.%d\n", header[3], header[4]);
647 length = (header[6] & 0x7F) << 21;
648 length += (header[7] & 0x7F) << 14;
649 length += (header[8] & 0x7F) << 7;
650 length += (header[9] & 0x7F);
651 TRACE("Length: %u\n", length);
654 /* Read the real header for the mpeg splitter */
655 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header);
658 TRACE("%x:%x:%x:%x\n", header[0], header[1], header[2], header[3]);
661 while(SUCCEEDED(hr) && !(streamtype=MPEGSplitter_head_check(header)))
663 TRACE("%x:%x:%x:%x\n", header[0], header[1], header[2], header[3]);
664 /* No valid header yet; shift by a byte and check again */
665 memmove(header, header+1, 3);
666 hr = IAsyncReader_SyncRead(pPin->pReader, pos++, 1, header + 3);
671 This->header_bytes = pos;
674 This->seektable[0].bytepos = pos;
675 This->seektable[0].timepos = 0;
679 case MPEG_AUDIO_HEADER:
681 LONGLONG duration = 0;
682 DWORD last_entry = 0;
684 DWORD ticks = GetTickCount();
686 hr = MPEGSplitter_init_audio(This, header, &piOutput, &amt);
689 WAVEFORMATEX *format = (WAVEFORMATEX*)amt.pbFormat;
693 /* Make the output buffer a multiple of the frame size */
694 props.cbBuffer = 0x4000 / format->nBlockAlign *
697 hr = Parser_AddPin(&(This->Parser), &piOutput, &props, &amt);
703 CoTaskMemFree(amt.pbFormat);
704 ERR("Could not create pin for MPEG audio stream (%x)\n", hr);
708 /* Check for idv1 tag, and remove it from stream if found */
709 hr = IAsyncReader_SyncRead(pPin->pReader, This->EndOfFile-128, 3, header+4);
712 if (!strncmp((char*)header+4, "TAG", 3))
713 This->EndOfFile -= 128;
714 This->Parser.pInputPin->rtStop = MEDIATIME_FROM_BYTES(This->EndOfFile);
715 This->Parser.pInputPin->rtStart = This->Parser.pInputPin->rtCurrent = MEDIATIME_FROM_BYTES(This->header_bytes);
717 /* http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm has a whole read up on audio headers */
718 while (pos + 3 < This->EndOfFile)
721 hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header);
724 while (parse_header(header, &length, &duration))
726 /* No valid header yet; shift by a byte and check again */
727 memmove(header, header+1, 3);
728 hr = IAsyncReader_SyncRead(pPin->pReader, pos++, 1, header + 3);
729 if (hr != S_OK || This->EndOfFile - pos < 4)
734 if (This->seektable && (duration / SEEK_INTERVAL) > last_entry)
736 if (last_entry + 1 > duration / SEEK_INTERVAL)
738 ERR("Somehow skipped %d interval lengths instead of 1\n", (DWORD)(duration/SEEK_INTERVAL) - (last_entry + 1));
742 TRACE("Entry: %u\n", last_entry);
743 if (last_entry >= This->seek_entries)
745 This->seek_entries += 64;
746 This->seektable = CoTaskMemRealloc(This->seektable, (This->seek_entries)*sizeof(struct seek_entry));
748 This->seektable[last_entry].bytepos = pos;
749 This->seektable[last_entry].timepos = duration;
752 TRACE("Pos: %x%08x/%x%08x\n", (DWORD)(pos >> 32), (DWORD)pos, (DWORD)(This->EndOfFile>>32), (DWORD)This->EndOfFile);
755 TRACE("Duration: %d seconds\n", (DWORD)(duration / 10000000));
756 TRACE("Parsing took %u ms\n", GetTickCount() - ticks);
757 This->duration = duration;
759 This->Parser.mediaSeeking.llCurrent = 0;
760 This->Parser.mediaSeeking.llDuration = duration;
761 This->Parser.mediaSeeking.llStop = duration;
764 case MPEG_VIDEO_HEADER:
765 FIXME("MPEG video processing not yet supported!\n");
768 case MPEG_SYSTEM_HEADER:
769 FIXME("MPEG system streams not yet supported!\n");
776 This->remaining_bytes = 0;
782 static HRESULT MPEGSplitter_cleanup(LPVOID iface)
784 MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface;
786 TRACE("(%p) Deleting sample\n", This);
788 if (This->pCurrentSample)
789 IMediaSample_Release(This->pCurrentSample);
790 This->pCurrentSample = NULL;
792 This->remaining_bytes = This->skipbytes = 0;
796 static HRESULT MPEGSplitter_seek(IBaseFilter *iface)
798 MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface;
799 PullPin *pPin = This->Parser.pInputPin;
800 LONGLONG newpos, timepos, bytepos;
804 newpos = This->Parser.mediaSeeking.llCurrent;
806 if (newpos > This->duration)
808 WARN("Requesting position %x%08x beyond end of stream %x%08x\n", (DWORD)(newpos>>32), (DWORD)newpos, (DWORD)(This->duration>>32), (DWORD)This->duration);
812 if (This->position/1000000 == newpos/1000000)
814 TRACE("Requesting position %x%08x same as current position %x%08x\n", (DWORD)(newpos>>32), (DWORD)newpos, (DWORD)(This->position>>32), (DWORD)This->position);
818 /* Position, cached */
819 bytepos = This->seektable[newpos / SEEK_INTERVAL].bytepos;
820 timepos = This->seektable[newpos / SEEK_INTERVAL].timepos;
822 hr = IAsyncReader_SyncRead(pPin->pReader, bytepos, 4, header);
823 while (timepos < newpos && bytepos + 3 < This->EndOfFile)
826 hr = IAsyncReader_SyncRead(pPin->pReader, bytepos, 4, header);
830 while (parse_header(header, &length, &timepos) && bytepos + 3 < This->EndOfFile)
832 /* No valid header yet; shift by a byte and check again */
833 memmove(header, header+1, 3);
834 hr = IAsyncReader_SyncRead(pPin->pReader, ++bytepos, 1, header + 3);
839 TRACE("Pos: %x%08x/%x%08x\n", (DWORD)(bytepos >> 32), (DWORD)bytepos, (DWORD)(This->EndOfFile>>32), (DWORD)This->EndOfFile);
844 PullPin *pin = This->Parser.pInputPin;
847 TRACE("Moving sound to %08u bytes!\n", (DWORD)bytepos);
849 EnterCriticalSection(&pin->thread_lock);
850 IPin_BeginFlush((IPin *)pin);
852 /* Make sure this is done while stopped, BeginFlush takes care of this */
853 EnterCriticalSection(&This->Parser.csFilter);
854 IPin_ConnectedTo(This->Parser.ppPins[1], &victim);
857 IPin_NewSegment(victim, newpos, This->duration, pin->dRate);
858 IPin_Release(victim);
861 pin->rtStart = pin->rtCurrent = MEDIATIME_FROM_BYTES(bytepos);
862 pin->rtStop = MEDIATIME_FROM_BYTES((REFERENCE_TIME)This->EndOfFile);
864 This->position = newpos;
865 LeaveCriticalSection(&This->Parser.csFilter);
867 TRACE("Done flushing\n");
868 IPin_EndFlush((IPin *)pin);
869 LeaveCriticalSection(&pin->thread_lock);
874 static HRESULT MPEGSplitter_destroy(LPVOID iface)
876 /* TODO: Find memory leaks etc */
880 HRESULT MPEGSplitter_create(IUnknown * pUnkOuter, LPVOID * ppv)
882 MPEGSplitterImpl *This;
885 TRACE("(%p, %p)\n", pUnkOuter, ppv);
890 return CLASS_E_NOAGGREGATION;
892 This = CoTaskMemAlloc(sizeof(MPEGSplitterImpl));
894 return E_OUTOFMEMORY;
896 ZeroMemory(This, sizeof(MPEGSplitterImpl));
897 This->seektable = CoTaskMemAlloc(sizeof(struct seek_entry) * 64);
898 if (!This->seektable)
901 return E_OUTOFMEMORY;
903 This->seek_entries = 64;
905 hr = Parser_Create(&(This->Parser), &CLSID_MPEG1Splitter, MPEGSplitter_process_sample, MPEGSplitter_query_accept, MPEGSplitter_pre_connect, MPEGSplitter_cleanup, MPEGSplitter_destroy, NULL, MPEGSplitter_seek, NULL);
913 /* Note: This memory is managed by the parser filter once created */