dshow.cpp

VLC Player Source Code

        p_sys->p_graph = NULL;
    }
}

/*****************************************************************************
 * CommonOpen: open direct show device
 *****************************************************************************/
static int CommonOpen( vlc_object_t *p_this, access_sys_t *p_sys,
                       bool b_access_demux )
{
    vlc_value_t  val;
    int i;

    /* Get/parse options and open device(s) */
    string vdevname, adevname;
    int i_width = 0, i_height = 0, i_chroma = 0;
    bool b_audio = true;

    var_Create( p_this, "dshow-config", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-tuner", VLC_VAR_BOOL | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-vdev", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-vdev", &val );
    if( val.psz_string ) vdevname = string( val.psz_string );
    free( val.psz_string );

    var_Create( p_this, "dshow-adev", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-adev", &val );
    if( val.psz_string ) adevname = string( val.psz_string );
    free( val.psz_string );

    static struct {char *psz_size; int  i_width; int  i_height;} size_table[] =
    { { "subqcif", 128, 96 }, { "qsif", 160, 120 }, { "qcif", 176, 144 },
      { "sif", 320, 240 }, { "cif", 352, 288 }, { "d1", 640, 480 },
      { 0, 0, 0 },
    };

    var_Create( p_this, "dshow-size", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-size", &val );
    if( val.psz_string && *val.psz_string )
    {
        for( i = 0; size_table[i].psz_size; i++ )
        {
            if( !strcmp( val.psz_string, size_table[i].psz_size ) )
            {
                i_width = size_table[i].i_width;
                i_height = size_table[i].i_height;
                break;
            }
        }
        if( !size_table[i].psz_size ) /* Try to parse "WidthxHeight" */
        {
            char *psz_parser;
            i_width = strtol( val.psz_string, &psz_parser, 0 );
            if( *psz_parser == 'x' || *psz_parser == 'X')
            {
                i_height = strtol( psz_parser + 1, &psz_parser, 0 );
            }
            msg_Dbg( p_this, "width x height %dx%d", i_width, i_height );
        }
    }
    free( val.psz_string );

    p_sys->b_chroma = false;
    var_Create( p_this, "dshow-chroma", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
    var_Get( p_this, "dshow-chroma", &val );
    if( val.psz_string && strlen( val.psz_string ) >= 4 )
    {
        i_chroma = VLC_FOURCC( val.psz_string[0], val.psz_string[1],
                               val.psz_string[2], val.psz_string[3] );
        p_sys->b_chroma = true;
    }
    free( val.psz_string );

    var_Create( p_this, "dshow-fps", VLC_VAR_FLOAT | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-tuner-channel",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-tuner-country",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-tuner-input",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

    var_Create( p_this, "dshow-amtuner-mode",
                VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

    var_Create( p_this, "dshow-caching", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

    var_Create( p_this, "dshow-video-input", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-audio-input", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-video-output", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
    var_Create( p_this, "dshow-audio-output", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );

    /* Initialize OLE/COM */
    CoInitialize( 0 );

    /* Initialize some data */
    p_sys->i_streams = 0;
    p_sys->pp_streams = 0;
    p_sys->i_width = i_width;
    p_sys->i_height = i_height;
    p_sys->i_chroma = i_chroma;

    p_sys->p_graph = NULL;
    p_sys->p_capture_graph_builder2 = NULL;
    p_sys->p_control = NULL;

    vlc_mutex_init( &p_sys->lock );
    vlc_cond_init( p_this, &p_sys->wait );

    /* Build directshow graph */
    CreateDirectShowGraph( p_sys );

    if( OpenDevice( p_this, p_sys, vdevname, 0 ) != VLC_SUCCESS )
    {
        msg_Err( p_this, "can't open video");
    }
    else
    {
        /* Check if we can handle the demuxing ourselves or need to spawn
         * a demuxer module */
        dshow_stream_t *p_stream = p_sys->pp_streams[p_sys->i_streams-1];

        if( p_stream->mt.majortype == MEDIATYPE_Video )
        {
            if( /* Raw DV stream */
                p_stream->i_fourcc == VLC_FOURCC('d','v','s','l') ||
                p_stream->i_fourcc == VLC_FOURCC('d','v','s','d') ||
                p_stream->i_fourcc == VLC_FOURCC('d','v','h','d') ||
                /* Raw MPEG video stream */
                p_stream->i_fourcc == VLC_FOURCC('m','p','2','v') )
            {
                b_audio = false;

                if( b_access_demux )
                {
                    /* Let the access (only) take care of that */
                    return VLC_EGENERIC;
                }
            }
        }

        if( p_stream->mt.majortype == MEDIATYPE_Stream )
        {
            b_audio = false;

            if( b_access_demux )
            {
                /* Let the access (only) take care of that */
                return VLC_EGENERIC;
            }

            var_Get( p_this, "dshow-tuner", &val );
            if( val.b_bool )
            {
                /* FIXME: we do MEDIATYPE_Stream here so we don't do
                 * it twice. */
                ShowTunerProperties( p_this, p_sys->p_capture_graph_builder2,
                                     p_stream->p_device_filter, 0 );
            }
        }
    }

    if( b_audio && OpenDevice( p_this, p_sys, adevname, 1 ) != VLC_SUCCESS )
    {
        msg_Err( p_this, "can't open audio");
    }

    for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
    {
            var_Get( p_this, "dshow-video-input", &val );
            if( val.i_int >= 0 )
                    p_sys->crossbar_routes[i].VideoInputIndex=val.i_int;
            var_Get( p_this, "dshow-video-output", &val );
            if( val.i_int >= 0 )
                    p_sys->crossbar_routes[i].VideoOutputIndex=val.i_int;
            var_Get( p_this, "dshow-audio-input", &val );
            if( val.i_int >= 0 )
                    p_sys->crossbar_routes[i].AudioInputIndex=val.i_int;
            var_Get( p_this, "dshow-audio-output", &val );
            if( val.i_int >= 0 )
                    p_sys->crossbar_routes[i].AudioOutputIndex=val.i_int;

        IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
        LONG VideoInputIndex = p_sys->crossbar_routes[i].VideoInputIndex;
        LONG VideoOutputIndex = p_sys->crossbar_routes[i].VideoOutputIndex;
        LONG AudioInputIndex = p_sys->crossbar_routes[i].AudioInputIndex;
        LONG AudioOutputIndex = p_sys->crossbar_routes[i].AudioOutputIndex;

        if( SUCCEEDED(pXbar->Route(VideoOutputIndex, VideoInputIndex)) )
        {
            msg_Dbg( p_this, "crossbar at depth %d, routed video "
                     "output %ld to video input %ld", i, VideoOutputIndex,
                     VideoInputIndex );

            if( AudioOutputIndex != -1 && AudioInputIndex != -1 )
            {
                if( SUCCEEDED( pXbar->Route(AudioOutputIndex,
                                            AudioInputIndex)) )
                {
                    msg_Dbg(p_this, "crossbar at depth %d, routed audio "
                            "output %ld to audio input %ld", i,
                            AudioOutputIndex, AudioInputIndex );
                }
            }
        }
    }

    /*
    ** Show properties pages from other filters in graph
    */
    var_Get( p_this, "dshow-config", &val );
    if( val.b_bool )
    {
        for( i = p_sys->i_crossbar_route_depth-1; i >= 0 ; --i )
        {
            IAMCrossbar *pXbar = p_sys->crossbar_routes[i].pXbar;
            IBaseFilter *p_XF;

            if( SUCCEEDED( pXbar->QueryInterface( IID_IBaseFilter,
                                                  (void **)&p_XF ) ) )
            {
                ShowPropertyPage( p_XF );
                p_XF->Release();
            }
        }
    }

    /* Initialize some data */
    p_sys->i_current_stream = 0;

    if( !p_sys->i_streams ) return VLC_EGENERIC;

    return VLC_SUCCESS;
}

/*****************************************************************************
 * DemuxOpen: open direct show device as an access_demux module
 *****************************************************************************/
static int DemuxOpen( vlc_object_t *p_this )
{
    demux_t      *p_demux = (demux_t *)p_this;
    access_sys_t *p_sys;
    int i;

    p_sys = (access_sys_t *)malloc( sizeof( access_sys_t ) );
    if( !p_sys )
        return VLC_ENOMEM;
    memset( p_sys, 0, sizeof( access_sys_t ) );
    p_demux->p_sys = (demux_sys_t *)p_sys;

    if( CommonOpen( p_this, p_sys, true ) != VLC_SUCCESS )
    {
        CommonClose( p_this, p_sys );
        return VLC_EGENERIC;
    }

    /* Everything is ready. Let's rock baby */
    msg_Dbg( p_this, "Playing...");
    p_sys->p_control->Run();

    p_demux->pf_demux   = Demux;
    p_demux->pf_control = DemuxControl;
    p_demux->info.i_update = 0;
    p_demux->info.i_title = 0;
    p_demux->info.i_seekpoint = 0;

    for( i = 0; i < p_sys->i_streams; i++ )
    {
        dshow_stream_t *p_stream = p_sys->pp_streams[i];
        es_format_t fmt;

        if( p_stream->mt.majortype == MEDIATYPE_Video )
        {
            es_format_Init( &fmt, VIDEO_ES, p_stream->i_fourcc );

            fmt.video.i_width  = p_stream->header.video.bmiHeader.biWidth;
            fmt.video.i_height = p_stream->header.video.bmiHeader.biHeight;
            fmt.video.i_aspect = 4 * VOUT_ASPECT_FACTOR / 3;

            if( !p_stream->header.video.bmiHeader.biCompression )
            {
                /* RGB DIB are coded from bottom to top */
                fmt.video.i_height = (unsigned int)(-(int)fmt.video.i_height);
            }

            /* Setup rgb mask for RGB formats */
            if( p_stream->i_fourcc == VLC_FOURCC('R','V','2','4') )
            {
                /* This is in BGR format */
                fmt.video.i_bmask = 0x00ff0000;
                fmt.video.i_gmask = 0x0000ff00;
                fmt.video.i_rmask = 0x000000ff;
            }

            if( p_stream->header.video.AvgTimePerFrame )
            {
                fmt.video.i_frame_rate = 10000000;
                fmt.video.i_frame_rate_base =
                    p_stream->header.video.AvgTimePerFrame;
            }
        }
        else if( p_stream->mt.majortype == MEDIATYPE_Audio )
        {
            es_format_Init( &fmt, AUDIO_ES, p_stream->i_fourcc );

            fmt.audio.i_channels = p_stream->header.audio.nChannels;
            fmt.audio.i_rate = p_stream->header.audio.nSamplesPerSec;
            fmt.audio.i_bitspersample = p_stream->header.audio.wBitsPerSample;
            fmt.audio.i_blockalign = fmt.audio.i_channels *
                fmt.audio.i_bitspersample / 8;
            fmt.i_bitrate = fmt.audio.i_channels * fmt.audio.i_rate *
                fmt.audio.i_bitspersample;
        }

        p_stream->p_es = es_out_Add( p_demux->out, &fmt );
    }

    return VLC_SUCCESS;
}

/*****************************************************************************
 * AccessOpen: open direct show device as an access module
 *****************************************************************************/
static int AccessOpen( vlc_object_t *p_this )
{
    access_t     *p_access = (access_t*)p_this;
    access_sys_t *p_sys;

    p_access->p_sys = p_sys = (access_sys_t *)malloc( sizeof( access_sys_t ) );
    if( !p_sys )
        return VLC_ENOMEM;
    memset( p_sys, 0, sizeof( access_sys_t ) );

    if( CommonOpen( p_this, p_sys, false ) != VLC_SUCCESS )
    {
        CommonClose( p_this, p_sys );
        return VLC_EGENERIC;