Date: Mon, 4 Mar 1996 12:28:11 -0600 From: Jim Lowe <james@miller.cs.uwm.edu> To: jason@scott.net, twcutter@mowgli.wr.usgs.gov Cc: kallio@cc.jyu.fi, multimedia@freebsd.org Subject: Re: New meteor driver Message-ID: <199603041828.MAA16241@miller.cs.uwm.edu>
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. I have the URL to get the Quick Cam patches: . http://www.crynwr.com:80/qcpc/ . . I believe it was posted here previously. They work for me. It . only has nv support in vic. One change I needed to make was to wire . the lpt port address. The autodetect failed. Don't know if anyone has . added h.261 support? Performance of the driver needs to improve. Really . needs to be made into a kernel driver. . - Tom Cutter It should be fairly easy to get h.261 support. Nv uses yuv 4:2:2 format and h.261 uses yuv 4:1:1. Since the qcam is greyscale (either 4 or 6 bits -- if I remember), then you basically have 4:0:0 with 4 or 6 bit resolution on the Y component. I suspect you will have to scale this Y component somewhat, and the U/V components would be set to zero, other than that -- it should be easy to create the grabber. There are several grabbers that you can use for an example. The meteor grabber probably isn't the best since the 7196 supports random frame sizes. The spigot or the sun vpix would probably be better examples on how to support a qcam interface. If I ever get a qcam here I will probably take a look at the code if someone hasn't done this already. . > > . > > YES Please! I have QCam here on my desk uninstalled! Waiting for vic . > > supporting it! ;-) . > > . > . > I have the patches, but have yet to get them to compile under the m-src . > code. As a matter of fact I was having troubles getting the vic src in . > there to compile at all. I'll try getting the new release. BTW, I'm . > running 2.1, should there be any problems???? The patches for qcam that I . > have are for 2.1. I can post them somewhere if you want or maybe I can . > find where I got them. . > . > L8r...Jason . > . What sort of problems are you having? With Make, configure, gcc? My gmake is 3.73, gcc is 2.6.3. I am not sure what version of make I am running. You will need to ftp the spigot library from ftp://ftp.cs.uwm.edu/pub/FreeBSD/spigot/spigot.tar.gz and install libspigot.a in /usr/local/lib, or do a ./configure in the vic tree. Other than that, all I do a is ``make'' and it compiles. If you are having some other problem please let me know. I would like to make this as easy as possible for people so we can add drivers and interfaces as new hardware becomes available. It would be real cool to add a hardware mpeg encoder/decoder to vic to compare hardware mpeg performance vs software h.261 performance. -Jim
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