mpegsplit.c File Reference

#include <assert.h>
#include <math.h>
#include "quartz_private.h"
#include "pin.h"
#include "uuids.h"
#include "mmreg.h"
#include "mmsystem.h"
#include "wine/winternl.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "parser.h"

Include dependency graph for mpegsplit.c:

Go to the source code of this file.

Classes
struct	MPEGSplitterImpl

Macros
#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

Typedefs
typedef struct MPEGSplitterImpl	MPEGSplitterImpl

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (quartz)
static MPEGSplitterImpl *	impl_from_IBaseFilter (IBaseFilter *iface)
static MPEGSplitterImpl *	impl_from_IMediaSeeking (IMediaSeeking *iface)
static MPEGSplitterImpl *	impl_from_IAMStreamSelect (IAMStreamSelect *iface)
static int	MPEGSplitter_head_check (const BYTE *header)
static HRESULT	parse_header (BYTE *header, LONGLONG *plen, LONGLONG *pduration)
static HRESULT	FillBuffer (MPEGSplitterImpl *This, IMediaSample *pCurrentSample)
static HRESULT	MPEGSplitter_process_sample (LPVOID iface, IMediaSample *pSample, DWORD_PTR cookie)
static HRESULT	MPEGSplitter_query_accept (LPVOID iface, const AM_MEDIA_TYPE *pmt)
static HRESULT	MPEGSplitter_init_audio (MPEGSplitterImpl *This, const BYTE *header, PIN_INFO *ppiOutput, AM_MEDIA_TYPE *pamt)
static HRESULT	MPEGSplitter_pre_connect (IPin *iface, IPin *pConnectPin, ALLOCATOR_PROPERTIES *props)
static HRESULT	MPEGSplitter_cleanup (LPVOID iface)
static HRESULT WINAPI	MPEGSplitter_seek (IMediaSeeking *iface)
static HRESULT	MPEGSplitter_disconnect (LPVOID iface)
static HRESULT	MPEGSplitter_first_request (LPVOID iface)
static HRESULT WINAPI	MPEGSplitter_QueryInterface (IBaseFilter *iface, REFIID riid, void **ppv)
static HRESULT WINAPI	AMStreamSelect_QueryInterface (IAMStreamSelect *iface, REFIID riid, void **ppv)
static ULONG WINAPI	AMStreamSelect_AddRef (IAMStreamSelect *iface)
static ULONG WINAPI	AMStreamSelect_Release (IAMStreamSelect *iface)
static HRESULT WINAPI	AMStreamSelect_Count (IAMStreamSelect *iface, DWORD *streams)
static HRESULT WINAPI	AMStreamSelect_Info (IAMStreamSelect *iface, LONG index, AM_MEDIA_TYPE **media_type, DWORD *flags, LCID *lcid, DWORD *group, WCHAR **name, IUnknown **object, IUnknown **unknown)
static HRESULT WINAPI	AMStreamSelect_Enable (IAMStreamSelect *iface, LONG index, DWORD flags)
HRESULT	MPEGSplitter_create (IUnknown *pUnkOuter, LPVOID *ppv)

Variables
static const WCHAR	wszAudioStream [] = {'A','u','d','i','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]
static const IBaseFilterVtbl	MPEGSplitter_Vtbl
static const IAMStreamSelectVtbl	AMStreamSelectVtbl

Macro Definition Documentation

AUDIO_ELEMENTARY_STREAM

#define AUDIO_ELEMENTARY_STREAM   0xC0

Definition at line 47 of file mpegsplit.c.

MPEG_AUDIO_HEADER

#define MPEG_AUDIO_HEADER   1

Definition at line 52 of file mpegsplit.c.

MPEG_NO_HEADER

#define MPEG_NO_HEADER   0

Definition at line 53 of file mpegsplit.c.

MPEG_SYSTEM_HEADER

#define MPEG_SYSTEM_HEADER   3

Definition at line 50 of file mpegsplit.c.

MPEG_VIDEO_HEADER

#define MPEG_VIDEO_HEADER   2

Definition at line 51 of file mpegsplit.c.

PACK_START_CODE

#define PACK_START_CODE   0xBA

Definition at line 44 of file mpegsplit.c.

SEQUENCE_HEADER_CODE

#define SEQUENCE_HEADER_CODE   0xB3

Definition at line 43 of file mpegsplit.c.

SYSTEM_START_CODE

#define SYSTEM_START_CODE   0xBB

Definition at line 46 of file mpegsplit.c.

VIDEO_ELEMENTARY_STREAM

#define VIDEO_ELEMENTARY_STREAM   0xE0

Definition at line 48 of file mpegsplit.c.

Typedef Documentation

MPEGSplitterImpl

typedef struct MPEGSplitterImpl MPEGSplitterImpl

Function Documentation

AMStreamSelect_AddRef()

static ULONG WINAPI AMStreamSelect_AddRef ( IAMStreamSelect *  iface )

static

Definition at line 820 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = impl_from_IAMStreamSelect(iface);
 
    return IBaseFilter_AddRef(&This->Parser.filter.IBaseFilter_iface);
}

AMStreamSelect_Count()

static HRESULT WINAPI AMStreamSelect_Count ( IAMStreamSelect *  iface, DWORD *  streams  )

static

Definition at line 834 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = impl_from_IAMStreamSelect(iface);
 
    FIXME("(%p/%p)->(%p) stub!\n", This, iface, streams);
 
    return E_NOTIMPL;
}

AMStreamSelect_Enable()

static HRESULT WINAPI AMStreamSelect_Enable ( IAMStreamSelect *  iface, LONG  index, DWORD  flags  )

static

Definition at line 852 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = impl_from_IAMStreamSelect(iface);
 
    FIXME("(%p/%p)->(%d,%x) stub!\n", This, iface, index, flags);
 
    return E_NOTIMPL;
}

AMStreamSelect_Info()

static HRESULT WINAPI AMStreamSelect_Info ( IAMStreamSelect *  iface, LONG  index, AM_MEDIA_TYPE **  media_type, DWORD *  flags, LCID *  lcid, DWORD *  group, WCHAR **  name, IUnknown **  object, IUnknown **  unknown  )

static

Definition at line 843 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = impl_from_IAMStreamSelect(iface);
 
    FIXME("(%p/%p)->(%d,%p,%p,%p,%p,%p,%p,%p) stub!\n", This, iface, index, media_type, flags, lcid, group, name, object, unknown);
 
    return E_NOTIMPL;
}

AMStreamSelect_QueryInterface()

static HRESULT WINAPI AMStreamSelect_QueryInterface ( IAMStreamSelect *  iface, REFIID  riid, void **  ppv  )

static

Definition at line 813 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = impl_from_IAMStreamSelect(iface);
 
    return IBaseFilter_QueryInterface(&This->Parser.filter.IBaseFilter_iface, riid, ppv);
}

AMStreamSelect_Release()

static ULONG WINAPI AMStreamSelect_Release ( IAMStreamSelect *  iface )

static

Definition at line 827 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = impl_from_IAMStreamSelect(iface);
 
    return IBaseFilter_Release(&This->Parser.filter.IBaseFilter_iface);
}

FillBuffer()

static HRESULT FillBuffer ( MPEGSplitterImpl *  This, IMediaSample *  pCurrentSample  )

static

Definition at line 169 of file mpegsplit.c.

{
    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, FALSE);
                IMediaSample_SetDiscontinuity(sample, FALSE);
                IMediaSample_SetSyncPoint(sample, TRUE);
                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;
}

Referenced by MPEGSplitter_process_sample().

impl_from_IAMStreamSelect()

static MPEGSplitterImpl * impl_from_IAMStreamSelect ( IAMStreamSelect *  iface )

inlinestatic

Definition at line 78 of file mpegsplit.c.

{
    return CONTAINING_RECORD(iface, MPEGSplitterImpl, IAMStreamSelect_iface);
}

Referenced by AMStreamSelect_AddRef(), AMStreamSelect_Count(), AMStreamSelect_Enable(), AMStreamSelect_Info(), AMStreamSelect_QueryInterface(), and AMStreamSelect_Release().

impl_from_IBaseFilter()

static MPEGSplitterImpl * impl_from_IBaseFilter ( IBaseFilter *  iface )

inlinestatic

Definition at line 68 of file mpegsplit.c.

{
    return CONTAINING_RECORD(iface, MPEGSplitterImpl, Parser.filter.IBaseFilter_iface);
}

Referenced by MPEGSplitter_QueryInterface().

impl_from_IMediaSeeking()

static MPEGSplitterImpl * impl_from_IMediaSeeking ( IMediaSeeking *  iface )

inlinestatic

Definition at line 73 of file mpegsplit.c.

{
    return CONTAINING_RECORD(iface, MPEGSplitterImpl, Parser.sourceSeeking.IMediaSeeking_iface);
}

Referenced by MPEGSplitter_seek().

MPEGSplitter_cleanup()

static HRESULT MPEGSplitter_cleanup ( LPVOID  iface )

static

Definition at line 633 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = iface;
 
    TRACE("(%p)\n", This);
 
    return S_OK;
}

Referenced by MPEGSplitter_create().

MPEGSplitter_create()

HRESULT MPEGSplitter_create	(	IUnknown *	pUnkOuter,
		LPVOID *	ppv
	)

Definition at line 871 of file mpegsplit.c.

{
    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->IAMStreamSelect_iface.lpVtbl = &AMStreamSelectVtbl;
    This->seek = TRUE;
 
    /* Note: This memory is managed by the parser filter once created */
    *ppv = &This->Parser.filter.IBaseFilter_iface;
 
    return hr;
}

MPEGSplitter_disconnect()

static HRESULT MPEGSplitter_disconnect ( LPVOID  iface )

static

Definition at line 708 of file mpegsplit.c.

{
    /* TODO: Find memory leaks etc */
    return S_OK;
}

Referenced by MPEGSplitter_create().

MPEGSplitter_first_request()

static HRESULT MPEGSplitter_first_request ( LPVOID  iface )

static

Definition at line 714 of file mpegsplit.c.

{
    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));
 
        IMediaSample_SetTime(sample, &rtSampleStart, &rtSampleStop);
        IMediaSample_SetPreroll(sample, FALSE);
        IMediaSample_SetDiscontinuity(sample, TRUE);
        IMediaSample_SetSyncPoint(sample, 1);
        This->seek = FALSE;
 
        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;
}

Referenced by MPEGSplitter_create().

MPEGSplitter_head_check()

static int MPEGSplitter_head_check ( const BYTE *  header )

static

Definition at line 83 of file mpegsplit.c.

{
    /* 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;
}

Referenced by MPEGSplitter_pre_connect(), and parse_header().

MPEGSplitter_init_audio()

static HRESULT MPEGSplitter_init_audio ( MPEGSplitterImpl *  This, const BYTE *  header, PIN_INFO *  ppiOutput, AM_MEDIA_TYPE *  pamt  )

static

Definition at line 363 of file mpegsplit.c.

{
    WAVEFORMATEX *format;
    int bitrate_index;
    int freq_index;
    int mode_ext;
    int emphasis;
    int padding;
    int lsf = 1;
    int mpeg1;
    int layer;
    int mode;
 
    ZeroMemory(pamt, sizeof(*pamt));
    ppiOutput->dir = PINDIR_OUTPUT;
    ppiOutput->pFilter = &This->Parser.filter.IBaseFilter_iface;
    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);
    padding       =   ((header[2]>>1)&0x1);
    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) + padding;
    else if (layer == 2)
        format->nBlockAlign = format->nAvgBytesPerSec * 8 * 144 /
                              format->nSamplesPerSec + padding;
    else
        format->nBlockAlign = 4 * (format->nAvgBytesPerSec * 8 * 12 / format->nSamplesPerSec + padding);
 
    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;
}

Referenced by MPEGSplitter_pre_connect().

MPEGSplitter_pre_connect()

static HRESULT MPEGSplitter_pre_connect ( IPin *  iface, IPin *  pConnectPin, ALLOCATOR_PROPERTIES *  props  )

static

Definition at line 485 of file mpegsplit.c.

{
    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;
    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;
    } while (0);
 
    while(SUCCEEDED(hr))
    {
        TRACE("Testing header %x:%x:%x:%x\n", header[0], header[1], header[2], header[3]);
 
        streamtype = MPEGSplitter_head_check(header);
        if (streamtype == MPEG_AUDIO_HEADER)
        {
            LONGLONG length;
            if (parse_header(header, &length, NULL) == S_OK)
            {
                BYTE next_header[4];
                /* Ensure we have a valid header by seeking for the next frame, some bad
                 * encoded ID3v2 may have an incorrect length and we end up finding bytes
                 * like FF FE 00 28 which are nothing more than a Unicode BOM followed by
                 * ')' character from inside a ID3v2 tag. Unfortunately that sequence
                 * matches like a valid mpeg audio header.
                 */
                hr = IAsyncReader_SyncRead(pPin->pReader, pos + length - 4, 4, next_header);
                if (FAILED(hr))
                    break;
                if (parse_header(next_header, &length, NULL) == S_OK)
                    break;
                TRACE("%x:%x:%x:%x is a fake audio header, looking for next...\n",
                      header[0], header[1], header[2], header[3]);
            }
        }
        else if (streamtype) /* Video or System stream */
            break;
 
        /* 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))
            {
                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;
}

Referenced by MPEGSplitter_create().

MPEGSplitter_process_sample()

static HRESULT MPEGSplitter_process_sample ( LPVOID  iface, IMediaSample *  pSample, DWORD_PTR  cookie  )

static

Definition at line 275 of file mpegsplit.c.

{
    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;
}

Referenced by MPEGSplitter_create().

MPEGSplitter_query_accept()

static HRESULT MPEGSplitter_query_accept ( LPVOID  iface, const AM_MEDIA_TYPE *  pmt  )

static

Definition at line 343 of file mpegsplit.c.

{
    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;
}

Referenced by MPEGSplitter_create().

MPEGSplitter_QueryInterface()

static HRESULT WINAPI MPEGSplitter_QueryInterface ( IBaseFilter *  iface, REFIID  riid, void **  ppv  )

static

Definition at line 767 of file mpegsplit.c.

{
    MPEGSplitterImpl *This = impl_from_IBaseFilter(iface);
    TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 
    *ppv = NULL;
 
    if ( IsEqualIID(riid, &IID_IUnknown)
      || IsEqualIID(riid, &IID_IPersist)
      || IsEqualIID(riid, &IID_IMediaFilter)
      || IsEqualIID(riid, &IID_IBaseFilter) )
        *ppv = iface;
    else if ( IsEqualIID(riid, &IID_IAMStreamSelect) )
        *ppv = &This->IAMStreamSelect_iface;
 
    if (*ppv)
    {
        IBaseFilter_AddRef(iface);
        return S_OK;
    }
 
    if (!IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IVideoWindow))
        FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 
    return E_NOINTERFACE;
}

MPEGSplitter_seek()

static HRESULT WINAPI MPEGSplitter_seek ( IMediaSeeking *  iface )

static

Definition at line 642 of file mpegsplit.c.

{
    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;
}

Referenced by MPEGSplitter_create().

parse_header()

static HRESULT parse_header ( BYTE *  header, LONGLONG *  plen, LONGLONG *  pduration  )

static

Definition at line 123 of file mpegsplit.c.

{
    int bitrate_index, freq_index, lsf = 1, mpeg1, layer, padding, bitrate, length;
    LONGLONG duration;
 
    if (MPEGSplitter_head_check(header) != MPEG_AUDIO_HEADER)
    {
        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;
}

Referenced by FillBuffer(), MPEGSplitter_first_request(), MPEGSplitter_pre_connect(), and MPEGSplitter_seek().

WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL

(

quartz

)

Variable Documentation

AMStreamSelectVtbl

const IAMStreamSelectVtbl AMStreamSelectVtbl

static

Initial value:

=
{
    AMStreamSelect_QueryInterface,
    AMStreamSelect_AddRef,
    AMStreamSelect_Release,
    AMStreamSelect_Count,
    AMStreamSelect_Info,
    AMStreamSelect_Enable
}

Definition at line 861 of file mpegsplit.c.

Referenced by MPEGSplitter_create().

freqs

const DWORD freqs[10] = { 44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000, 0 }

static

Definition at line 111 of file mpegsplit.c.

Referenced by lzx_write_compressed_tree(), MPEGSplitter_init_audio(), and parse_header().

MPEGSplitter_Vtbl

const IBaseFilterVtbl MPEGSplitter_Vtbl

static

Initial value:

=
{
    MPEGSplitter_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
}

Definition at line 794 of file mpegsplit.c.

Referenced by MPEGSplitter_create().

tabsel_123

const DWORD tabsel_123[2][3][16]

static

Initial value:

= {
    { {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,} }
}

Definition at line 113 of file mpegsplit.c.

Referenced by MPEGSplitter_init_audio(), and parse_header().

wszAudioStream

const WCHAR wszAudioStream[] = {'A','u','d','i','o',0}

static

Definition at line 109 of file mpegsplit.c.

Referenced by MPEGSplitter_init_audio().