Developing a DVI to USB video capture program

Altera_Forum · ‎06-30-2015

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.

Altera_Forum · ‎06-30-2015

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 · ‎06-30-2015

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 · ‎06-30-2015

--- 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.