/* * MPEG Splitter Filter * * Copyright 2003 Robert Shearman * Copyright 2004-2005 Christian Costa * Copyright 2007 Chris Robinson * Copyright 2008 Maarten Lankhorst * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include #include #include "quartz_private.h" #include "control_private.h" #include "pin.h" #include "uuids.h" #include "mmreg.h" #include "mmsystem.h" #include "winternl.h" #include "wine/unicode.h" #include "wine/debug.h" #include "parser.h" WINE_DEFAULT_DEBUG_CHANNEL(quartz); #define SEQUENCE_HEADER_CODE 0xB3 #define PACK_START_CODE 0xBA #define SYSTEM_START_CODE 0xBB #define AUDIO_ELEMENTARY_STREAM 0xC0 #define VIDEO_ELEMENTARY_STREAM 0xE0 #define MPEG_SYSTEM_HEADER 3 #define MPEG_VIDEO_HEADER 2 #define MPEG_AUDIO_HEADER 1 #define MPEG_NO_HEADER 0 #define SEEK_INTERVAL (ULONGLONG)(10 * 10000000) /* Add an entry every 10 seconds */ struct seek_entry { ULONGLONG bytepos; ULONGLONG timepos; }; typedef struct MPEGSplitterImpl { ParserImpl Parser; LONGLONG EndOfFile; LONGLONG duration; LONGLONG position; DWORD begin_offset; BYTE header[4]; /* Whether we just seeked (or started playing) */ BOOL seek; /* Seeking cache */ ULONG seek_entries; struct seek_entry *seektable; } MPEGSplitterImpl; static int MPEGSplitter_head_check(const BYTE *header) { /* If this is a possible start code, check for a system or video header */ if (header[0] == 0 && header[1] == 0 && header[2] == 1) { /* Check if we got a system or elementary stream start code */ if (header[3] == PACK_START_CODE || header[3] == VIDEO_ELEMENTARY_STREAM || header[3] == AUDIO_ELEMENTARY_STREAM) return MPEG_SYSTEM_HEADER; /* Check for a MPEG video sequence start code */ if (header[3] == SEQUENCE_HEADER_CODE) return MPEG_VIDEO_HEADER; } /* This should give a good guess if we have an MPEG audio header */ if(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 && ((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf && ((header[2]>>2)&0x3) != 0x3) return MPEG_AUDIO_HEADER; /* Nothing yet.. */ return MPEG_NO_HEADER; } static const WCHAR wszAudioStream[] = {'A','u','d','i','o',0}; static const WCHAR wszVideoStream[] = {'V','i','d','e','o',0}; static const DWORD freqs[10] = { 44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000, 0 }; static const DWORD tabsel_123[2][3][16] = { { {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,}, {0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,}, {0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} }, { {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,}, {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,}, {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} } }; static HRESULT parse_header(BYTE *header, LONGLONG *plen, LONGLONG *pduration) { LONGLONG duration; int bitrate_index, freq_index, lsf = 1, mpeg1, layer, padding, bitrate, length; if (!(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 && ((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf && ((header[2]>>2)&0x3) != 0x3)) { FIXME("Not a valid header: %02x:%02x\n", header[0], header[1]); return E_INVALIDARG; } mpeg1 = (header[1]>>4)&0x1; if (mpeg1) lsf = ((header[1]>>3)&0x1)^1; layer = 4-((header[1]>>1)&0x3); bitrate_index = ((header[2]>>4)&0xf); freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6); padding = ((header[2]>>1)&0x1); bitrate = tabsel_123[lsf][layer-1][bitrate_index] * 1000; if (!bitrate || layer != 3) { FIXME("Not a valid header: %02x:%02x:%02x:%02x\n", header[0], header[1], header[2], header[3]); return E_INVALIDARG; } if (layer == 3 || layer == 2) length = 144 * bitrate / freqs[freq_index] + padding; else length = 4 * (12 * bitrate / freqs[freq_index] + padding); duration = (ULONGLONG)10000000 * (ULONGLONG)(length) / (ULONGLONG)(bitrate/8); *plen = length; if (pduration) *pduration += duration; return S_OK; } static HRESULT FillBuffer(MPEGSplitterImpl *This, IMediaSample *pCurrentSample) { Parser_OutputPin * pOutputPin = (Parser_OutputPin*)This->Parser.ppPins[1]; LONGLONG length = 0; LONGLONG pos = BYTES_FROM_MEDIATIME(This->Parser.pInputPin->rtNext); LONGLONG time = This->position; HRESULT hr; BYTE *fbuf = NULL; DWORD len = IMediaSample_GetActualDataLength(pCurrentSample); TRACE("Source length: %u\n", len); IMediaSample_GetPointer(pCurrentSample, &fbuf); /* Find the next valid header.. it be right here */ assert(parse_header(fbuf, &length, &This->position) == S_OK); assert(length == len || length + 4 == len); IMediaSample_SetActualDataLength(pCurrentSample, length); /* Queue the next sample */ if (length + 4 == len) { PullPin *pin = This->Parser.pInputPin; LONGLONG stop = BYTES_FROM_MEDIATIME(pin->rtStop); hr = S_OK; memcpy(This->header, fbuf + length, 4); while (FAILED(hr = parse_header(This->header, &length, NULL))) { memmove(This->header, This->header+1, 3); if (pos + 4 >= stop) break; IAsyncReader_SyncRead(pin->pReader, ++pos, 1, This->header + 3); } pin->rtNext = MEDIATIME_FROM_BYTES(pos); if (SUCCEEDED(hr)) { /* Remove 4 for the last header, which should hopefully work */ IMediaSample *sample = NULL; LONGLONG rtSampleStart = pin->rtNext - MEDIATIME_FROM_BYTES(4); LONGLONG rtSampleStop = rtSampleStart + MEDIATIME_FROM_BYTES(length + 4); hr = IMemAllocator_GetBuffer(pin->pAlloc, &sample, NULL, NULL, 0); if (rtSampleStop > pin->rtStop) rtSampleStop = MEDIATIME_FROM_BYTES(ALIGNUP(BYTES_FROM_MEDIATIME(pin->rtStop), pin->cbAlign)); IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop); IMediaSample_SetPreroll(sample, 0); IMediaSample_SetDiscontinuity(sample, 0); IMediaSample_SetSyncPoint(sample, 1); pin->rtCurrent = rtSampleStart; pin->rtNext = rtSampleStop; if (SUCCEEDED(hr)) hr = IAsyncReader_Request(pin->pReader, sample, 0); if (FAILED(hr)) FIXME("o_Ox%08x\n", hr); } } /* If not, we're presumably at the end of file */ TRACE("Media time : %u.%03u\n", (DWORD)(This->position/10000000), (DWORD)((This->position/10000)%1000)); IMediaSample_SetTime(pCurrentSample, &time, &This->position); hr = OutputPin_SendSample(&pOutputPin->pin, pCurrentSample); if (hr != S_OK) { if (hr != S_FALSE) TRACE("Error sending sample (%x)\n", hr); else TRACE("S_FALSE (%d), holding\n", IMediaSample_GetActualDataLength(pCurrentSample)); } return hr; } static HRESULT MPEGSplitter_process_sample(LPVOID iface, IMediaSample * pSample, DWORD_PTR cookie) { MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface; BYTE *pbSrcStream; DWORD cbSrcStream = 0; REFERENCE_TIME tStart, tStop; Parser_OutputPin * pOutputPin; HRESULT hr; pOutputPin = (Parser_OutputPin*)This->Parser.ppPins[1]; hr = IMediaSample_GetTime(pSample, &tStart, &tStop); if (SUCCEEDED(hr)) { cbSrcStream = IMediaSample_GetActualDataLength(pSample); hr = IMediaSample_GetPointer(pSample, &pbSrcStream); } /* Flush occurring */ if (cbSrcStream == 0) { FIXME(".. Why do I need you?\n"); return S_OK; } /* trace removed for performance reasons */ /* TRACE("(%p), %llu -> %llu\n", pSample, tStart, tStop); */ /* Now, try to find a new header */ hr = FillBuffer(This, pSample); if (hr != S_OK) { WARN("Failed with hres: %08x!\n", hr); /* Unset progression if denied! */ if (hr == VFW_E_WRONG_STATE || hr == S_FALSE) { memcpy(This->header, pbSrcStream, 4); This->Parser.pInputPin->rtCurrent = tStart; } } if (BYTES_FROM_MEDIATIME(tStop) >= This->EndOfFile || This->position >= This->Parser.mediaSeeking.llStop) { int i; TRACE("End of file reached\n"); for (i = 0; i < This->Parser.cStreams; i++) { IPin* ppin; hr = IPin_ConnectedTo(This->Parser.ppPins[i+1], &ppin); if (SUCCEEDED(hr)) { hr = IPin_EndOfStream(ppin); IPin_Release(ppin); } if (FAILED(hr)) WARN("Error sending EndOfStream to pin %d (%x)\n", i, hr); } /* Force the pullpin thread to stop */ hr = S_FALSE; } return hr; } static HRESULT MPEGSplitter_query_accept(LPVOID iface, const AM_MEDIA_TYPE *pmt) { if (!IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream)) return S_FALSE; if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Audio)) return S_OK; if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Video)) FIXME("MPEG-1 video streams not yet supported.\n"); else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1System)) FIXME("MPEG-1 system streams not yet supported.\n"); else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1VideoCD)) FIXME("MPEG-1 VideoCD streams not yet supported.\n"); return S_FALSE; } static HRESULT MPEGSplitter_init_audio(MPEGSplitterImpl *This, const BYTE *header, PIN_INFO *ppiOutput, AM_MEDIA_TYPE *pamt) { WAVEFORMATEX *format; int bitrate_index; int freq_index; int mode_ext; int emphasis; int lsf = 1; int mpeg1; int layer; int mode; ZeroMemory(pamt, sizeof(*pamt)); ppiOutput->dir = PINDIR_OUTPUT; ppiOutput->pFilter = (IBaseFilter*)This; wsprintfW(ppiOutput->achName, wszAudioStream); pamt->formattype = FORMAT_WaveFormatEx; pamt->majortype = MEDIATYPE_Audio; pamt->subtype = MEDIASUBTYPE_MPEG1AudioPayload; pamt->lSampleSize = 0; pamt->bFixedSizeSamples = FALSE; pamt->bTemporalCompression = 0; mpeg1 = (header[1]>>4)&0x1; if (mpeg1) lsf = ((header[1]>>3)&0x1)^1; layer = 4-((header[1]>>1)&0x3); bitrate_index = ((header[2]>>4)&0xf); freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6); mode = ((header[3]>>6)&0x3); mode_ext = ((header[3]>>4)&0x3); emphasis = ((header[3]>>0)&0x3); if (!bitrate_index) { /* Set to highest bitrate so samples will fit in for sure */ FIXME("Variable-bitrate audio not fully supported.\n"); bitrate_index = 15; } pamt->cbFormat = ((layer==3)? sizeof(MPEGLAYER3WAVEFORMAT) : sizeof(MPEG1WAVEFORMAT)); pamt->pbFormat = CoTaskMemAlloc(pamt->cbFormat); if (!pamt->pbFormat) return E_OUTOFMEMORY; ZeroMemory(pamt->pbFormat, pamt->cbFormat); format = (WAVEFORMATEX*)pamt->pbFormat; format->wFormatTag = ((layer == 3) ? WAVE_FORMAT_MPEGLAYER3 : WAVE_FORMAT_MPEG); format->nChannels = ((mode == 3) ? 1 : 2); format->nSamplesPerSec = freqs[freq_index]; format->nAvgBytesPerSec = tabsel_123[lsf][layer-1][bitrate_index] * 1000 / 8; if (layer == 3) format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 / (format->nSamplesPerSec<nBlockAlign = format->nAvgBytesPerSec * 8 * 144 / format->nSamplesPerSec + 1; else format->nBlockAlign = 4 * (format->nAvgBytesPerSec * 8 * 12 / format->nSamplesPerSec + 1); format->wBitsPerSample = 0; if (layer == 3) { MPEGLAYER3WAVEFORMAT *mp3format = (MPEGLAYER3WAVEFORMAT*)format; format->cbSize = MPEGLAYER3_WFX_EXTRA_BYTES; mp3format->wID = MPEGLAYER3_ID_MPEG; mp3format->fdwFlags = MPEGLAYER3_FLAG_PADDING_ON; mp3format->nBlockSize = format->nBlockAlign; mp3format->nFramesPerBlock = 1; /* Beware the evil magic numbers. This struct is apparently horribly * under-documented, and the only references I could find had it being * set to this with no real explanation. It works fine though, so I'm * not complaining (yet). */ mp3format->nCodecDelay = 1393; } else { MPEG1WAVEFORMAT *mpgformat = (MPEG1WAVEFORMAT*)format; format->cbSize = 22; mpgformat->fwHeadLayer = ((layer == 1) ? ACM_MPEG_LAYER1 : ((layer == 2) ? ACM_MPEG_LAYER2 : ACM_MPEG_LAYER3)); mpgformat->dwHeadBitrate = format->nAvgBytesPerSec * 8; mpgformat->fwHeadMode = ((mode == 3) ? ACM_MPEG_SINGLECHANNEL : ((mode == 2) ? ACM_MPEG_DUALCHANNEL : ((mode == 1) ? ACM_MPEG_JOINTSTEREO : ACM_MPEG_STEREO))); mpgformat->fwHeadModeExt = ((mode == 1) ? 0x0F : (1<wHeadEmphasis = emphasis + 1; mpgformat->fwHeadFlags = ACM_MPEG_ID_MPEG1; } pamt->subtype.Data1 = format->wFormatTag; TRACE("MPEG audio stream detected:\n" "\tLayer %d (%#x)\n" "\tFrequency: %d\n" "\tChannels: %d (%d)\n" "\tBytesPerSec: %d\n", layer, format->wFormatTag, format->nSamplesPerSec, format->nChannels, mode, format->nAvgBytesPerSec); dump_AM_MEDIA_TYPE(pamt); return S_OK; } static HRESULT MPEGSplitter_pre_connect(IPin *iface, IPin *pConnectPin, ALLOCATOR_PROPERTIES *props) { PullPin *pPin = (PullPin *)iface; MPEGSplitterImpl *This = (MPEGSplitterImpl*)pPin->pin.pinInfo.pFilter; HRESULT hr; LONGLONG pos = 0; /* in bytes */ BYTE header[10]; int streamtype = 0; LONGLONG total, avail; AM_MEDIA_TYPE amt; PIN_INFO piOutput; IAsyncReader_Length(pPin->pReader, &total, &avail); This->EndOfFile = total; hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header); if (SUCCEEDED(hr)) pos += 4; /* Skip ID3 v2 tag, if any */ if (SUCCEEDED(hr) && !strncmp("ID3", (char*)header, 3)) do { UINT length; hr = IAsyncReader_SyncRead(pPin->pReader, pos, 6, header + 4); if (FAILED(hr)) break; pos += 6; TRACE("Found ID3 v2.%d.%d\n", header[3], header[4]); length = (header[6] & 0x7F) << 21; length += (header[7] & 0x7F) << 14; length += (header[8] & 0x7F) << 7; length += (header[9] & 0x7F); TRACE("Length: %u\n", length); pos += length; /* Read the real header for the mpeg splitter */ hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header); if (SUCCEEDED(hr)) pos += 4; TRACE("%x:%x:%x:%x\n", header[0], header[1], header[2], header[3]); } while (0); while(SUCCEEDED(hr) && !(streamtype=MPEGSplitter_head_check(header))) { TRACE("%x:%x:%x:%x\n", header[0], header[1], header[2], header[3]); /* No valid header yet; shift by a byte and check again */ memmove(header, header+1, 3); hr = IAsyncReader_SyncRead(pPin->pReader, pos++, 1, header + 3); } if (FAILED(hr)) return hr; pos -= 4; This->begin_offset = pos; memcpy(This->header, header, 4); This->seektable[0].bytepos = pos; This->seektable[0].timepos = 0; switch(streamtype) { case MPEG_AUDIO_HEADER: { LONGLONG duration = 0; DWORD last_entry = 0; DWORD ticks = GetTickCount(); hr = MPEGSplitter_init_audio(This, header, &piOutput, &amt); if (SUCCEEDED(hr)) { WAVEFORMATEX *format = (WAVEFORMATEX*)amt.pbFormat; props->cbAlign = 1; props->cbPrefix = 0; /* Make the output buffer a multiple of the frame size */ props->cbBuffer = 0x4000 / format->nBlockAlign * format->nBlockAlign; props->cBuffers = 3; hr = Parser_AddPin(&(This->Parser), &piOutput, props, &amt); } if (FAILED(hr)) { if (amt.pbFormat) CoTaskMemFree(amt.pbFormat); ERR("Could not create pin for MPEG audio stream (%x)\n", hr); break; } /* Check for idv1 tag, and remove it from stream if found */ hr = IAsyncReader_SyncRead(pPin->pReader, This->EndOfFile-128, 3, header+4); if (FAILED(hr)) break; if (!strncmp((char*)header+4, "TAG", 3)) This->EndOfFile -= 128; This->Parser.pInputPin->rtStop = MEDIATIME_FROM_BYTES(This->EndOfFile); This->Parser.pInputPin->rtStart = This->Parser.pInputPin->rtCurrent = MEDIATIME_FROM_BYTES(This->begin_offset); /* http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm has a whole read up on audio headers */ while (pos + 3 < This->EndOfFile) { LONGLONG length = 0; hr = IAsyncReader_SyncRead(pPin->pReader, pos, 4, header); if (hr != S_OK) break; while (parse_header(header, &length, &duration)) { /* No valid header yet; shift by a byte and check again */ memmove(header, header+1, 3); hr = IAsyncReader_SyncRead(pPin->pReader, pos++, 1, header + 3); if (hr != S_OK || This->EndOfFile - pos < 4) break; } pos += length; if (This->seektable && (duration / SEEK_INTERVAL) > last_entry) { if (last_entry + 1 > duration / SEEK_INTERVAL) { ERR("Somehow skipped %d interval lengths instead of 1\n", (DWORD)(duration/SEEK_INTERVAL) - (last_entry + 1)); } ++last_entry; TRACE("Entry: %u\n", last_entry); if (last_entry >= This->seek_entries) { This->seek_entries += 64; This->seektable = CoTaskMemRealloc(This->seektable, (This->seek_entries)*sizeof(struct seek_entry)); } This->seektable[last_entry].bytepos = pos; This->seektable[last_entry].timepos = duration; } TRACE("Pos: %x%08x/%x%08x\n", (DWORD)(pos >> 32), (DWORD)pos, (DWORD)(This->EndOfFile>>32), (DWORD)This->EndOfFile); } hr = S_OK; TRACE("Duration: %d seconds\n", (DWORD)(duration / 10000000)); TRACE("Parsing took %u ms\n", GetTickCount() - ticks); This->duration = duration; This->Parser.mediaSeeking.llCurrent = 0; This->Parser.mediaSeeking.llDuration = duration; This->Parser.mediaSeeking.llStop = duration; break; } case MPEG_VIDEO_HEADER: FIXME("MPEG video processing not yet supported!\n"); hr = E_FAIL; break; case MPEG_SYSTEM_HEADER: FIXME("MPEG system streams not yet supported!\n"); hr = E_FAIL; break; default: break; } This->position = 0; return hr; } static HRESULT MPEGSplitter_cleanup(LPVOID iface) { MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface; TRACE("(%p)\n", This); return S_OK; } static HRESULT MPEGSplitter_seek(IBaseFilter *iface) { MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface; PullPin *pPin = This->Parser.pInputPin; LONGLONG newpos, timepos, bytepos; HRESULT hr = S_OK; BYTE header[4]; newpos = This->Parser.mediaSeeking.llCurrent; if (newpos > This->duration) { WARN("Requesting position %x%08x beyond end of stream %x%08x\n", (DWORD)(newpos>>32), (DWORD)newpos, (DWORD)(This->duration>>32), (DWORD)This->duration); return E_INVALIDARG; } if (This->position/1000000 == newpos/1000000) { TRACE("Requesting position %x%08x same as current position %x%08x\n", (DWORD)(newpos>>32), (DWORD)newpos, (DWORD)(This->position>>32), (DWORD)This->position); return S_OK; } /* Position, cached */ bytepos = This->seektable[newpos / SEEK_INTERVAL].bytepos; timepos = This->seektable[newpos / SEEK_INTERVAL].timepos; hr = IAsyncReader_SyncRead(pPin->pReader, bytepos, 4, header); while (bytepos + 3 < This->EndOfFile) { LONGLONG length = 0; hr = IAsyncReader_SyncRead(pPin->pReader, bytepos, 4, header); if (hr != S_OK || timepos >= newpos) break; while (parse_header(header, &length, &timepos) && bytepos + 3 < This->EndOfFile) { /* No valid header yet; shift by a byte and check again */ memmove(header, header+1, 3); hr = IAsyncReader_SyncRead(pPin->pReader, ++bytepos, 1, header + 3); if (hr != S_OK) break; } bytepos += length; TRACE("Pos: %x%08x/%x%08x\n", (DWORD)(bytepos >> 32), (DWORD)bytepos, (DWORD)(This->EndOfFile>>32), (DWORD)This->EndOfFile); } if (SUCCEEDED(hr)) { PullPin *pin = This->Parser.pInputPin; IPin *victim = NULL; TRACE("Moving sound to %08u bytes!\n", (DWORD)bytepos); EnterCriticalSection(&pin->thread_lock); IPin_BeginFlush((IPin *)pin); /* Make sure this is done while stopped, BeginFlush takes care of this */ EnterCriticalSection(&This->Parser.csFilter); memcpy(This->header, header, 4); IPin_ConnectedTo(This->Parser.ppPins[1], &victim); if (victim) { IPin_NewSegment(victim, newpos, This->duration, pin->dRate); IPin_Release(victim); } pin->rtStart = pin->rtCurrent = MEDIATIME_FROM_BYTES(bytepos); pin->rtStop = MEDIATIME_FROM_BYTES((REFERENCE_TIME)This->EndOfFile); This->seek = TRUE; This->position = newpos; LeaveCriticalSection(&This->Parser.csFilter); TRACE("Done flushing\n"); IPin_EndFlush((IPin *)pin); LeaveCriticalSection(&pin->thread_lock); } return hr; } static HRESULT MPEGSplitter_disconnect(LPVOID iface) { /* TODO: Find memory leaks etc */ return S_OK; } static HRESULT MPEGSplitter_first_request(LPVOID iface) { MPEGSplitterImpl *This = (MPEGSplitterImpl*)iface; PullPin *pin = This->Parser.pInputPin; HRESULT hr; LONGLONG length; IMediaSample *sample; TRACE("Seeking? %d\n", This->seek); assert(parse_header(This->header, &length, NULL) == S_OK); if (pin->rtCurrent >= pin->rtStop) { /* Last sample has already been queued, request nothing more */ FIXME("Done!\n"); return S_OK; } hr = IMemAllocator_GetBuffer(pin->pAlloc, &sample, NULL, NULL, 0); pin->rtNext = pin->rtCurrent; if (SUCCEEDED(hr)) { LONGLONG rtSampleStart = pin->rtNext; /* Add 4 for the next header, which should hopefully work */ LONGLONG rtSampleStop = rtSampleStart + MEDIATIME_FROM_BYTES(length + 4); if (rtSampleStop > pin->rtStop) rtSampleStop = MEDIATIME_FROM_BYTES(ALIGNUP(BYTES_FROM_MEDIATIME(pin->rtStop), pin->cbAlign)); hr = IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop); pin->rtCurrent = pin->rtNext; pin->rtNext = rtSampleStop; IMediaSample_SetPreroll(sample, FALSE); IMediaSample_SetDiscontinuity(sample, This->seek); IMediaSample_SetSyncPoint(sample, 1); This->seek = 0; hr = IAsyncReader_Request(pin->pReader, sample, 0); } if (FAILED(hr)) ERR("Horsemen of the apocalypse came to bring error 0x%08x\n", hr); return hr; } static const IBaseFilterVtbl MPEGSplitter_Vtbl = { Parser_QueryInterface, Parser_AddRef, Parser_Release, Parser_GetClassID, Parser_Stop, Parser_Pause, Parser_Run, Parser_GetState, Parser_SetSyncSource, Parser_GetSyncSource, Parser_EnumPins, Parser_FindPin, Parser_QueryFilterInfo, Parser_JoinFilterGraph, Parser_QueryVendorInfo }; HRESULT MPEGSplitter_create(IUnknown * pUnkOuter, LPVOID * ppv) { MPEGSplitterImpl *This; HRESULT hr = E_FAIL; TRACE("(%p, %p)\n", pUnkOuter, ppv); *ppv = NULL; if (pUnkOuter) return CLASS_E_NOAGGREGATION; This = CoTaskMemAlloc(sizeof(MPEGSplitterImpl)); if (!This) return E_OUTOFMEMORY; ZeroMemory(This, sizeof(MPEGSplitterImpl)); This->seektable = CoTaskMemAlloc(sizeof(struct seek_entry) * 64); if (!This->seektable) { CoTaskMemFree(This); return E_OUTOFMEMORY; } This->seek_entries = 64; 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); if (FAILED(hr)) { CoTaskMemFree(This); return hr; } This->seek = 1; /* Note: This memory is managed by the parser filter once created */ *ppv = (LPVOID)This; return hr; }