Date: Mon, 26 Feb 1996 09:28:44 -0600 (CST) From: Mark Tinguely <tinguely@plains.nodak.edu> To: leonard@dstc.edu.au, multimedia@freebsd.org Subject: Re: ComputerEyes PCI/1024 Message-ID: <199602261528.JAA13002@plains.nodak.edu>
next in thread | raw e-mail | index | archive | help
Digitial Vision wanted me to write a driver for the Computer Eyes/1024 since I wrote one for their much older 8 bit ISA Computer Eyes/RT. I decided to pass on the driver because the card is too expensive (a Meteor clone is much cheaper) the CE/1024 uses a ISA bus rather than the cheaper PCI bus meteor clone, but most convincing was the fact the Computer Eyes/1024 like the older RT provides only RGB 24 capture mode. this means you will have to convert the RGB 24 to YUV in software. I found that the software RGB 24 -> YUV significantly reduces the frame rate. In the CE/RT driver, I made the big mistake of doing the RGB -> YUV using floating point, a much better way would be converting RGB 24 to RGB 8 with shift and then doing a table lookup to convert RGB 8 to YUV like nv does it for X capture mode. Even using this method the frame rate will be lower than the cheaper metoer clone. -mark.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199602261528.JAA13002>