| /* |
| * 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 <assert.h> |
| #include <math.h> |
| |
| #include "quartz_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 |
| |
| typedef struct MPEGSplitterImpl |
| { |
| ParserImpl Parser; |
| LONGLONG EndOfFile; |
| LONGLONG position; |
| DWORD begin_offset; |
| BYTE header[4]; |
| |
| /* Whether we just seeked (or started playing) */ |
| BOOL seek; |
| } MPEGSplitterImpl; |
| |
| static inline MPEGSplitterImpl *impl_from_IMediaSeeking( IMediaSeeking *iface ) |
| { |
| return CONTAINING_RECORD(iface, MPEGSplitterImpl, Parser.sourceSeeking.IMediaSeeking_iface); |
| } |
| |
| 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) |
| { |
| int bitrate_index, freq_index, lsf = 1, mpeg1, layer, padding, bitrate, length; |
| LONGLONG duration; |
| |
| 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:%02x:%02x\n", header[0], header[1], header[2], header[3]); |
| 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) |
| { |
| FIXME("Not a valid header: %02x:%02x:%02x:%02x\n", header[0], header[1], header[2], header[3]); |
| return E_INVALIDARG; |
| } |
| |
| if (layer == 1) |
| length = 4 * (12 * bitrate / freqs[freq_index] + padding); |
| else if (layer == 2) |
| length = 144 * bitrate / freqs[freq_index] + padding; |
| else if (layer == 3) |
| length = 144 * bitrate / (freqs[freq_index]<<lsf) + padding; |
| else |
| { |
| ERR("Impossible layer %d\n", layer); |
| return E_INVALIDARG; |
| } |
| |
| 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 = unsafe_impl_Parser_OutputPin_from_IPin(This->Parser.ppPins[1]); |
| LONGLONG length = 0; |
| LONGLONG pos = BYTES_FROM_MEDIATIME(This->Parser.pInputPin->rtNext); |
| LONGLONG time = This->position, rtstop, rtstart; |
| 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 <SHOULD> be right here */ |
| hr = parse_header(fbuf, &length, &This->position); |
| assert(hr == S_OK); |
| 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); |
| |
| if (rtSampleStop > pin->rtStop) |
| rtSampleStop = MEDIATIME_FROM_BYTES(ALIGNUP(BYTES_FROM_MEDIATIME(pin->rtStop), pin->cbAlign)); |
| |
| hr = IMemAllocator_GetBuffer(pin->pAlloc, &sample, NULL, NULL, 0); |
| if (SUCCEEDED(hr)) |
| { |
| IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop); |
| IMediaSample_SetPreroll(sample, 0); |
| IMediaSample_SetDiscontinuity(sample, 0); |
| IMediaSample_SetSyncPoint(sample, 1); |
| hr = IAsyncReader_Request(pin->pReader, sample, 0); |
| if (SUCCEEDED(hr)) |
| { |
| pin->rtCurrent = rtSampleStart; |
| pin->rtNext = rtSampleStop; |
| } |
| else |
| IMediaSample_Release(sample); |
| } |
| 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)); |
| |
| if (IMediaSample_IsDiscontinuity(pCurrentSample) == S_OK) { |
| IPin *victim; |
| EnterCriticalSection(&This->Parser.filter.csFilter); |
| pOutputPin->pin.pin.tStart = time; |
| pOutputPin->pin.pin.dRate = This->Parser.sourceSeeking.dRate; |
| hr = IPin_ConnectedTo(&pOutputPin->pin.pin.IPin_iface, &victim); |
| if (hr == S_OK) |
| { |
| hr = IPin_NewSegment(victim, time, This->Parser.sourceSeeking.llStop, |
| This->Parser.sourceSeeking.dRate); |
| if (hr != S_OK) |
| FIXME("NewSegment returns %08x\n", hr); |
| IPin_Release(victim); |
| } |
| LeaveCriticalSection(&This->Parser.filter.csFilter); |
| if (hr != S_OK) |
| return hr; |
| } |
| rtstart = (double)(time - pOutputPin->pin.pin.tStart) / pOutputPin->pin.pin.dRate; |
| rtstop = (double)(This->position - pOutputPin->pin.pin.tStart) / pOutputPin->pin.pin.dRate; |
| IMediaSample_SetTime(pCurrentSample, &rtstart, &rtstop); |
| IMediaSample_SetMediaTime(pCurrentSample, &time, &This->position); |
| |
| hr = BaseOutputPinImpl_Deliver(&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 = iface; |
| BYTE *pbSrcStream; |
| DWORD cbSrcStream = 0; |
| REFERENCE_TIME tStart, tStop, tAviStart = This->position; |
| HRESULT hr; |
| |
| 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; |
| This->position = tAviStart; |
| } |
| } |
| |
| if (BYTES_FROM_MEDIATIME(tStop) >= This->EndOfFile || This->position >= This->Parser.sourceSeeking.llStop) |
| { |
| unsigned 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 %u (%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"); |
| else FIXME("%s\n", debugstr_guid(&pmt->subtype)); |
| |
| 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<<lsf) + 1; |
| else if (layer == 2) |
| format->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<<mode_ext)); |
| mpgformat->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 = impl_PullPin_from_IPin(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) && !memcmp("ID3", header, 3)) |
| do { |
| UINT length = 0; |
| 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]); |
| if(header[3] <= 4 && header[4] != 0xff && |
| (header[5]&0x0f) == 0 && (header[6]&0x80) == 0 && |
| (header[7]&0x80) == 0 && (header[8]&0x80) == 0 && |
| (header[9]&0x80) == 0) |
| { |
| length = (header[6]<<21) | (header[7]<<14) | |
| (header[8]<< 7) | (header[9] ); |
| if((header[5]&0x10)) |
| length += 10; |
| 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); |
| |
| switch(streamtype) |
| { |
| case MPEG_AUDIO_HEADER: |
| { |
| LONGLONG duration = 0; |
| WAVEFORMATEX *format; |
| |
| hr = MPEGSplitter_init_audio(This, header, &piOutput, &amt); |
| if (SUCCEEDED(hr)) |
| { |
| 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); |
| if (FAILED(hr)) |
| break; |
| if (!strncmp((char*)header, "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); |
| |
| duration = (This->EndOfFile-This->begin_offset) * 10000000 / format->nAvgBytesPerSec; |
| TRACE("Duration: %d seconds\n", (DWORD)(duration / 10000000)); |
| |
| This->Parser.sourceSeeking.llCurrent = 0; |
| This->Parser.sourceSeeking.llDuration = duration; |
| This->Parser.sourceSeeking.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 = iface; |
| |
| TRACE("(%p)\n", This); |
| |
| return S_OK; |
| } |
| |
| static HRESULT WINAPI MPEGSplitter_seek(IMediaSeeking *iface) |
| { |
| MPEGSplitterImpl *This = impl_from_IMediaSeeking(iface); |
| PullPin *pPin = This->Parser.pInputPin; |
| LONGLONG newpos, timepos, bytepos; |
| HRESULT hr = E_INVALIDARG; |
| BYTE header[4]; |
| |
| newpos = This->Parser.sourceSeeking.llCurrent; |
| 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; |
| } |
| |
| bytepos = This->begin_offset; |
| timepos = 0; |
| /* http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm has a whole read up on audio headers */ |
| while (bytepos + 3 < This->EndOfFile) |
| { |
| LONGLONG duration = timepos; |
| LONGLONG length = 0; |
| hr = IAsyncReader_SyncRead(pPin->pReader, bytepos, 4, header); |
| if (hr != S_OK) |
| break; |
| while ((hr=parse_header(header, &length, &duration)) != S_OK && |
| bytepos + 4 < This->EndOfFile) |
| { |
| /* No valid header yet; shift by a byte and check again */ |
| memmove(header, header+1, 3); |
| hr = IAsyncReader_SyncRead(pPin->pReader, ++bytepos + 3, 1, header + 3); |
| if (hr != S_OK) |
| break; |
| } |
| if (hr != S_OK || duration > newpos) |
| break; |
| bytepos += length; |
| timepos = duration; |
| } |
| |
| if (SUCCEEDED(hr)) |
| { |
| PullPin *pin = This->Parser.pInputPin; |
| |
| TRACE("Moving sound to %08u bytes!\n", (DWORD)bytepos); |
| |
| EnterCriticalSection(&pin->thread_lock); |
| IPin_BeginFlush(&pin->pin.IPin_iface); |
| |
| /* Make sure this is done while stopped, BeginFlush takes care of this */ |
| EnterCriticalSection(&This->Parser.filter.csFilter); |
| memcpy(This->header, header, 4); |
| |
| 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.filter.csFilter); |
| |
| TRACE("Done flushing\n"); |
| IPin_EndFlush(&pin->pin.IPin_iface); |
| 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 = iface; |
| PullPin *pin = This->Parser.pInputPin; |
| HRESULT hr; |
| LONGLONG length; |
| IMediaSample *sample; |
| |
| TRACE("Seeking? %d\n", This->seek); |
| |
| hr = parse_header(This->header, &length, NULL); |
| assert(hr == 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); |
| |
| IMediaSample_SetPreroll(sample, FALSE); |
| IMediaSample_SetDiscontinuity(sample, TRUE); |
| IMediaSample_SetSyncPoint(sample, 1); |
| This->seek = 0; |
| |
| hr = IAsyncReader_Request(pin->pReader, sample, 0); |
| if (SUCCEEDED(hr)) |
| { |
| pin->rtCurrent = pin->rtNext; |
| pin->rtNext = rtSampleStop; |
| } |
| else |
| IMediaSample_Release(sample); |
| } |
| 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)); |
| 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 = This; |
| |
| return hr; |
| } |
