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Thread: IC image control SDK vs DirectShow

  1. #1
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    Question IC image control SDK vs DirectShow

    Hi Stefan,

    You said in this thread (http://www.theimagingsourceforums.co...l-over-cameras) that the image control SDK encapsulates DirectShow, so the methods like openLive, startLive, snapImage are actually calling DirectShow functions internally?

    Also does there exist a set of functions/methods that talks to the camera driver directly?

  2. #2
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    Re: IC image control SDK vs DirectShow

    The driver is a WDM DirectShow driver. Therefore, DirectShow functions are used to communicate.
    Best regards
    Stefan
    IC Imaging Control Support

  3. #3
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    Re: IC image control SDK vs DirectShow

    Then what about VCDProperties? I thought they are set by bypassing DirectShow, so there must be a secret tunnel

    I am asking because I want to see if the performance of the camera can be further improved.

    Thanks,


    YZ

  4. #4
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    Re: IC image control SDK vs DirectShow

    They use the KsPropertySet. So you wont win anything.
    Best regards
    Stefan
    IC Imaging Control Support

  5. #5
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    Re: IC image control SDK vs DirectShow

    Then what about using DirectShow only? Have you by any chance checked the overhead using the SDK vs DirectShow?

  6. #6
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    Re: IC image control SDK vs DirectShow

    You can give it a try. I do not think, that this will be remarkable faster.
    Best regards
    Stefan
    IC Imaging Control Support

  7. #7
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    Re: IC image control SDK vs DirectShow

    Alright, thanks very much for the help.

  8. #8
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    Re: IC image control SDK vs DirectShow

    Actually I do have another question, is there a way to set ROI using DirectShow alone?

    EDIT: I meant any ROI size. I can only set the resolution to
    640x480
    1024x768
    1280x720
    1280x960
    1920x1080
    2560x1920
    2592x1944
    Last edited by yan_zhao_ep; June 26, 2014 at 17:10:19.

  9. #9
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    Re: IC image control SDK vs DirectShow

    Well, this is difficult, since I usually do not use DirectShow on my own.

    But have a look on the AM_MEDIA_TYPE, and queried data of the pins. Look for the granularity. It is the same information, the VideoFormatDesc object returns.
    Best regards
    Stefan
    IC Imaging Control Support

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