AVStream: BDA issue (Signal Strength : 0)

Discussion in 'Windows Vista Drivers' started by Edward Hsu, Sep 23, 2004.

  1. Edward Hsu

    Edward Hsu Guest

    Dear All,

    I got a error message when I right-click "Microsoft DVBT Network
    Provider" and chose Properties. Change to "Scanning Tuner" tab and find one
    RED text line on the buttom of this page. It is " -2147467259 .
    When...Calling IScanningTuner::get_SignalStrength". I felt this error message
    is caused by signal strength (0). I have implemented
    KSPROPSETID_BdaSignalStats property set but didn't call the GetHandler of
    KSPROPERTY_BDA_SIGNAL_STRENGTH. How to solve this issue? Any comments are
    very appreciated.

    Thanks,
    Edward
     
    Edward Hsu, Sep 23, 2004
    #1
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  2. Edward Hsu

    Max Paklin Guest

    It is a known issue. Pay no attention to it.
    At this point for digital graphs VidCtl doesn't check the signal strength.
    Instead they check received TS and draw conclusion about signal based on TS
    presence and amount of errors in it.

    -- Max.
     
    Max Paklin, Sep 23, 2004
    #2
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  3. Edward Hsu

    Edward Hsu Guest

    I met a problem on playback DVB-T stream. I could playback a DVB-T stream
    by set its A/V PIDs to Demux filter manually. I would like to make this
    operation automatically. How should I do?

    Thanks,
    Edward
     
    Edward Hsu, Sep 23, 2004
    #3
  4. Edward Hsu

    Max Paklin Guest

    See IMpeg2Demultiplexer and IMPEG2PIDMap interfaces in Platform SDK.

    -- Max.
     
    Max Paklin, Sep 23, 2004
    #4
  5. Edward Hsu

    Edward Hsu Guest

    Hi Max,

    I am very sorry that I didn't describe my intention correctly. I have
    write a application program to write A/V PIDs by using IMpeg2Demultiplexer
    and IMPEG2PIDMap interfaces. However, I think Microsoft DVBT Network Provider
    and BDA MPEG2 Transport Information filters will parse DVB SI information and
    inform application what programs are included in this channel. I cannot get
    any program informations from these two filters. How to get program
    information from them? PS : I have ever tried to use IComponents interface to
    get program infos but I failed.

    Thanks,
    Edward
     
    Edward Hsu, Sep 24, 2004
    #5
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