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Altera_Forum's avatar
Altera_Forum
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10 years ago

Developing a DVI to USB video capture program

Hi guys,

I'm developing a DVI grayscale video capture and outputting the stream of video serialized via USB. Since the normal USB won't handle data transmission at 800x600 resolution, ​139 MHz clock (60 FPS) and using 1 pixel (24 bits) per clock, I was thinking about implementing a UVC (USB Video Class) with NiosII. Is there any resources for implementing an UVC on NiosII? Any example or an Altera IP Core?

Also, am i in the right track with the UVC idea? Is there an easier/faster way?

Thanks for the help.

EDIT: Forgot to say that i'm using a DE2-115 board. I'll input the DVI pins into the GPIO pins.

EDIT2: Can also use Ethernet as the interface to stream the video to the PC.

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    Hi,

    One of Altera's megafunction partner has something which is of your interest.

    Please visit following: http://www.slscorp.com/index.php. ( In that, look into "Image Acquisition using USB3.0 IP core" ).

    Hope this would help.

    Cheers,

    Bhaumik
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    From Altera, I think they only have the Video image processing suite that used to do the video processing. Not too sure about the UVB.

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    --- Quote Start ---

    Hi,

    One of Altera's megafunction partner has something which is of your interest.

    Please visit following: http://www.slscorp.com/index.php. ( In that, look into "Image Acquisition using USB3.0 IP core" ).

    Hope this would help.

    Cheers,

    Bhaumik

    --- Quote End ---

    Unfortunatelly i can't use USB 3.0, USB 2.0 is way more common around here. I'll try to cram the data using compression.

    I've taken a turn away from UVC, since i only need to output the pixel values to the USB, i'm thinking about designing a USB bulk endpoint, but i don't know if the Cypress EZ-OTG on the DE2-115 can handle it. Could anyone point me to some reference design?

    As for compression, opencores has a JPEG encoder that might suite my needs (http://opencores.org/project,mkjpeg) and i'll stick with it for now. I'll focus on building the USB application for now.