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It takes a good 0.5 seconds for MPEGSplitter_pre_connect to iterate over the file and build the table for a standard 2 or 3 minute MP3. This causes unsightly hiccups when an app tries to play a new file, particularly in games, as the pre-connect needs to happen synchronously to tell whether it can succeed or not.
783 lines
25 KiB
C
783 lines
25 KiB
C
/*
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* MPEG Splitter Filter
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*
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* Copyright 2003 Robert Shearman
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* Copyright 2004-2005 Christian Costa
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* Copyright 2007 Chris Robinson
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* Copyright 2008 Maarten Lankhorst
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <assert.h>
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#include <math.h>
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#include "quartz_private.h"
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#include "pin.h"
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#include "uuids.h"
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#include "mmreg.h"
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#include "mmsystem.h"
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#include "winternl.h"
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#include "wine/unicode.h"
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#include "wine/debug.h"
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#include "parser.h"
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WINE_DEFAULT_DEBUG_CHANNEL(quartz);
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#define SEQUENCE_HEADER_CODE 0xB3
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#define PACK_START_CODE 0xBA
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#define SYSTEM_START_CODE 0xBB
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#define AUDIO_ELEMENTARY_STREAM 0xC0
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#define VIDEO_ELEMENTARY_STREAM 0xE0
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#define MPEG_SYSTEM_HEADER 3
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#define MPEG_VIDEO_HEADER 2
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#define MPEG_AUDIO_HEADER 1
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#define MPEG_NO_HEADER 0
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typedef struct MPEGSplitterImpl
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{
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ParserImpl Parser;
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LONGLONG EndOfFile;
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LONGLONG position;
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DWORD begin_offset;
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BYTE header[4];
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/* Whether we just seeked (or started playing) */
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BOOL seek;
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} MPEGSplitterImpl;
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static inline MPEGSplitterImpl *impl_from_IMediaSeeking( IMediaSeeking *iface )
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{
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return CONTAINING_RECORD(iface, MPEGSplitterImpl, Parser.sourceSeeking.IMediaSeeking_iface);
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}
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static int MPEGSplitter_head_check(const BYTE *header)
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{
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/* If this is a possible start code, check for a system or video header */
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if (header[0] == 0 && header[1] == 0 && header[2] == 1)
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{
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/* Check if we got a system or elementary stream start code */
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if (header[3] == PACK_START_CODE ||
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header[3] == VIDEO_ELEMENTARY_STREAM ||
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header[3] == AUDIO_ELEMENTARY_STREAM)
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return MPEG_SYSTEM_HEADER;
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/* Check for a MPEG video sequence start code */
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if (header[3] == SEQUENCE_HEADER_CODE)
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return MPEG_VIDEO_HEADER;
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}
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/* This should give a good guess if we have an MPEG audio header */
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if(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 &&
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((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf &&
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((header[2]>>2)&0x3) != 0x3)
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return MPEG_AUDIO_HEADER;
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/* Nothing yet.. */
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return MPEG_NO_HEADER;
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}
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static const WCHAR wszAudioStream[] = {'A','u','d','i','o',0};
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static const WCHAR wszVideoStream[] = {'V','i','d','e','o',0};
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static const DWORD freqs[10] = { 44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000, 0 };
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static const DWORD tabsel_123[2][3][16] = {
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{ {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,},
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{0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,},
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{0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} },
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{ {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,},
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{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,},
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{0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} }
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};
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static HRESULT parse_header(BYTE *header, LONGLONG *plen, LONGLONG *pduration)
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{
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int bitrate_index, freq_index, lsf = 1, mpeg1, layer, padding, bitrate, length;
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LONGLONG duration;
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if (!(header[0] == 0xff && ((header[1]>>5)&0x7) == 0x7 &&
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((header[1]>>1)&0x3) != 0 && ((header[2]>>4)&0xf) != 0xf &&
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((header[2]>>2)&0x3) != 0x3))
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{
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FIXME("Not a valid header: %02x:%02x:%02x:%02x\n", header[0], header[1], header[2], header[3]);
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return E_INVALIDARG;
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}
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mpeg1 = (header[1]>>4)&0x1;
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if (mpeg1)
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lsf = ((header[1]>>3)&0x1)^1;
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layer = 4-((header[1]>>1)&0x3);
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bitrate_index = ((header[2]>>4)&0xf);
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freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6);
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padding = ((header[2]>>1)&0x1);
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bitrate = tabsel_123[lsf][layer-1][bitrate_index] * 1000;
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if (!bitrate)
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{
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FIXME("Not a valid header: %02x:%02x:%02x:%02x\n", header[0], header[1], header[2], header[3]);
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return E_INVALIDARG;
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}
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if (layer == 1)
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length = 4 * (12 * bitrate / freqs[freq_index] + padding);
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else if (layer == 2)
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length = 144 * bitrate / freqs[freq_index] + padding;
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else if (layer == 3)
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length = 144 * bitrate / (freqs[freq_index]<<lsf) + padding;
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else
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{
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ERR("Impossible layer %d\n", layer);
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return E_INVALIDARG;
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}
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duration = (ULONGLONG)10000000 * (ULONGLONG)(length) / (ULONGLONG)(bitrate/8);
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*plen = length;
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if (pduration)
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*pduration += duration;
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return S_OK;
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}
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static HRESULT FillBuffer(MPEGSplitterImpl *This, IMediaSample *pCurrentSample)
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{
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Parser_OutputPin * pOutputPin = unsafe_impl_Parser_OutputPin_from_IPin(This->Parser.ppPins[1]);
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LONGLONG length = 0;
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LONGLONG pos = BYTES_FROM_MEDIATIME(This->Parser.pInputPin->rtNext);
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LONGLONG time = This->position, rtstop, rtstart;
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HRESULT hr;
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BYTE *fbuf = NULL;
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DWORD len = IMediaSample_GetActualDataLength(pCurrentSample);
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TRACE("Source length: %u\n", len);
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IMediaSample_GetPointer(pCurrentSample, &fbuf);
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/* Find the next valid header.. it <SHOULD> be right here */
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hr = parse_header(fbuf, &length, &This->position);
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assert(hr == S_OK);
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IMediaSample_SetActualDataLength(pCurrentSample, length);
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/* Queue the next sample */
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if (length + 4 == len)
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{
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PullPin *pin = This->Parser.pInputPin;
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LONGLONG stop = BYTES_FROM_MEDIATIME(pin->rtStop);
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hr = S_OK;
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memcpy(This->header, fbuf + length, 4);
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while (FAILED(hr = parse_header(This->header, &length, NULL)))
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{
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memmove(This->header, This->header+1, 3);
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if (pos + 4 >= stop)
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break;
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IAsyncReader_SyncRead(pin->pReader, ++pos, 1, This->header + 3);
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}
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pin->rtNext = MEDIATIME_FROM_BYTES(pos);
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if (SUCCEEDED(hr))
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{
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/* Remove 4 for the last header, which should hopefully work */
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IMediaSample *sample = NULL;
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LONGLONG rtSampleStart = pin->rtNext - MEDIATIME_FROM_BYTES(4);
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LONGLONG rtSampleStop = rtSampleStart + MEDIATIME_FROM_BYTES(length + 4);
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if (rtSampleStop > pin->rtStop)
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rtSampleStop = MEDIATIME_FROM_BYTES(ALIGNUP(BYTES_FROM_MEDIATIME(pin->rtStop), pin->cbAlign));
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hr = IMemAllocator_GetBuffer(pin->pAlloc, &sample, NULL, NULL, 0);
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if (SUCCEEDED(hr))
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{
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IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop);
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IMediaSample_SetPreroll(sample, 0);
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IMediaSample_SetDiscontinuity(sample, 0);
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IMediaSample_SetSyncPoint(sample, 1);
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hr = IAsyncReader_Request(pin->pReader, sample, 0);
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if (SUCCEEDED(hr))
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{
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pin->rtCurrent = rtSampleStart;
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pin->rtNext = rtSampleStop;
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}
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else
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IMediaSample_Release(sample);
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}
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if (FAILED(hr))
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FIXME("o_Ox%08x\n", hr);
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}
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}
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/* If not, we're presumably at the end of file */
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TRACE("Media time : %u.%03u\n", (DWORD)(This->position/10000000), (DWORD)((This->position/10000)%1000));
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if (IMediaSample_IsDiscontinuity(pCurrentSample) == S_OK) {
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IPin *victim;
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EnterCriticalSection(&This->Parser.filter.csFilter);
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pOutputPin->pin.pin.tStart = time;
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pOutputPin->pin.pin.dRate = This->Parser.sourceSeeking.dRate;
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hr = IPin_ConnectedTo(&pOutputPin->pin.pin.IPin_iface, &victim);
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if (hr == S_OK)
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{
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hr = IPin_NewSegment(victim, time, This->Parser.sourceSeeking.llStop,
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This->Parser.sourceSeeking.dRate);
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if (hr != S_OK)
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FIXME("NewSegment returns %08x\n", hr);
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IPin_Release(victim);
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}
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LeaveCriticalSection(&This->Parser.filter.csFilter);
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if (hr != S_OK)
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return hr;
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}
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rtstart = (double)(time - pOutputPin->pin.pin.tStart) / pOutputPin->pin.pin.dRate;
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rtstop = (double)(This->position - pOutputPin->pin.pin.tStart) / pOutputPin->pin.pin.dRate;
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IMediaSample_SetTime(pCurrentSample, &rtstart, &rtstop);
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IMediaSample_SetMediaTime(pCurrentSample, &time, &This->position);
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hr = BaseOutputPinImpl_Deliver(&pOutputPin->pin, pCurrentSample);
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if (hr != S_OK)
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{
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if (hr != S_FALSE)
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TRACE("Error sending sample (%x)\n", hr);
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else
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TRACE("S_FALSE (%d), holding\n", IMediaSample_GetActualDataLength(pCurrentSample));
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}
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return hr;
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}
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static HRESULT MPEGSplitter_process_sample(LPVOID iface, IMediaSample * pSample, DWORD_PTR cookie)
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{
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MPEGSplitterImpl *This = iface;
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BYTE *pbSrcStream;
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DWORD cbSrcStream = 0;
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REFERENCE_TIME tStart, tStop, tAviStart = This->position;
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HRESULT hr;
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hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
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if (SUCCEEDED(hr))
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{
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cbSrcStream = IMediaSample_GetActualDataLength(pSample);
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hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
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}
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/* Flush occurring */
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if (cbSrcStream == 0)
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{
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FIXME(".. Why do I need you?\n");
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return S_OK;
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}
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/* trace removed for performance reasons */
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/* TRACE("(%p), %llu -> %llu\n", pSample, tStart, tStop); */
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/* Now, try to find a new header */
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hr = FillBuffer(This, pSample);
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if (hr != S_OK)
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{
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WARN("Failed with hres: %08x!\n", hr);
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/* Unset progression if denied! */
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if (hr == VFW_E_WRONG_STATE || hr == S_FALSE)
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{
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memcpy(This->header, pbSrcStream, 4);
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This->Parser.pInputPin->rtCurrent = tStart;
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This->position = tAviStart;
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}
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}
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if (BYTES_FROM_MEDIATIME(tStop) >= This->EndOfFile || This->position >= This->Parser.sourceSeeking.llStop)
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{
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unsigned int i;
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TRACE("End of file reached\n");
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for (i = 0; i < This->Parser.cStreams; i++)
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{
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IPin* ppin;
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hr = IPin_ConnectedTo(This->Parser.ppPins[i+1], &ppin);
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if (SUCCEEDED(hr))
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{
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hr = IPin_EndOfStream(ppin);
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IPin_Release(ppin);
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}
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if (FAILED(hr))
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WARN("Error sending EndOfStream to pin %u (%x)\n", i, hr);
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}
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/* Force the pullpin thread to stop */
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hr = S_FALSE;
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}
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return hr;
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}
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static HRESULT MPEGSplitter_query_accept(LPVOID iface, const AM_MEDIA_TYPE *pmt)
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{
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if (!IsEqualIID(&pmt->majortype, &MEDIATYPE_Stream))
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return S_FALSE;
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if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Audio))
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return S_OK;
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if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1Video))
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FIXME("MPEG-1 video streams not yet supported.\n");
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else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1System))
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FIXME("MPEG-1 system streams not yet supported.\n");
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else if (IsEqualIID(&pmt->subtype, &MEDIASUBTYPE_MPEG1VideoCD))
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FIXME("MPEG-1 VideoCD streams not yet supported.\n");
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else FIXME("%s\n", debugstr_guid(&pmt->subtype));
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return S_FALSE;
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}
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static HRESULT MPEGSplitter_init_audio(MPEGSplitterImpl *This, const BYTE *header, PIN_INFO *ppiOutput, AM_MEDIA_TYPE *pamt)
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{
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WAVEFORMATEX *format;
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int bitrate_index;
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int freq_index;
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int mode_ext;
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int emphasis;
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int lsf = 1;
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int mpeg1;
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int layer;
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int mode;
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ZeroMemory(pamt, sizeof(*pamt));
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ppiOutput->dir = PINDIR_OUTPUT;
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ppiOutput->pFilter = (IBaseFilter*)This;
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wsprintfW(ppiOutput->achName, wszAudioStream);
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pamt->formattype = FORMAT_WaveFormatEx;
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pamt->majortype = MEDIATYPE_Audio;
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pamt->subtype = MEDIASUBTYPE_MPEG1AudioPayload;
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pamt->lSampleSize = 0;
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pamt->bFixedSizeSamples = FALSE;
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pamt->bTemporalCompression = 0;
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mpeg1 = (header[1]>>4)&0x1;
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if (mpeg1)
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lsf = ((header[1]>>3)&0x1)^1;
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layer = 4-((header[1]>>1)&0x3);
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bitrate_index = ((header[2]>>4)&0xf);
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freq_index = ((header[2]>>2)&0x3) + (mpeg1?(lsf*3):6);
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mode = ((header[3]>>6)&0x3);
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mode_ext = ((header[3]>>4)&0x3);
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emphasis = ((header[3]>>0)&0x3);
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if (!bitrate_index)
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{
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/* Set to highest bitrate so samples will fit in for sure */
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FIXME("Variable-bitrate audio not fully supported.\n");
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bitrate_index = 15;
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}
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pamt->cbFormat = ((layer==3)? sizeof(MPEGLAYER3WAVEFORMAT) :
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sizeof(MPEG1WAVEFORMAT));
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pamt->pbFormat = CoTaskMemAlloc(pamt->cbFormat);
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if (!pamt->pbFormat)
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return E_OUTOFMEMORY;
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ZeroMemory(pamt->pbFormat, pamt->cbFormat);
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format = (WAVEFORMATEX*)pamt->pbFormat;
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format->wFormatTag = ((layer == 3) ? WAVE_FORMAT_MPEGLAYER3 :
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WAVE_FORMAT_MPEG);
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format->nChannels = ((mode == 3) ? 1 : 2);
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format->nSamplesPerSec = freqs[freq_index];
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format->nAvgBytesPerSec = tabsel_123[lsf][layer-1][bitrate_index] * 1000 / 8;
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if (layer == 3)
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format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
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(format->nSamplesPerSec<<lsf) + 1;
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else if (layer == 2)
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format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
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format->nSamplesPerSec + 1;
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else
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format->nBlockAlign = 4 * (format->nAvgBytesPerSec * 8 * 12 / format->nSamplesPerSec + 1);
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format->wBitsPerSample = 0;
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if (layer == 3)
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{
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MPEGLAYER3WAVEFORMAT *mp3format = (MPEGLAYER3WAVEFORMAT*)format;
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format->cbSize = MPEGLAYER3_WFX_EXTRA_BYTES;
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mp3format->wID = MPEGLAYER3_ID_MPEG;
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mp3format->fdwFlags = MPEGLAYER3_FLAG_PADDING_ON;
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mp3format->nBlockSize = format->nBlockAlign;
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mp3format->nFramesPerBlock = 1;
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/* Beware the evil magic numbers. This struct is apparently horribly
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* under-documented, and the only references I could find had it being
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* set to this with no real explanation. It works fine though, so I'm
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* not complaining (yet).
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*/
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mp3format->nCodecDelay = 1393;
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}
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else
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{
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MPEG1WAVEFORMAT *mpgformat = (MPEG1WAVEFORMAT*)format;
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format->cbSize = 22;
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mpgformat->fwHeadLayer = ((layer == 1) ? ACM_MPEG_LAYER1 :
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((layer == 2) ? ACM_MPEG_LAYER2 :
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ACM_MPEG_LAYER3));
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mpgformat->dwHeadBitrate = format->nAvgBytesPerSec * 8;
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mpgformat->fwHeadMode = ((mode == 3) ? ACM_MPEG_SINGLECHANNEL :
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((mode == 2) ? ACM_MPEG_DUALCHANNEL :
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((mode == 1) ? ACM_MPEG_JOINTSTEREO :
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ACM_MPEG_STEREO)));
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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;
|
|
}
|