Date: Sun, 28 Jan 1996 23:00:55 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: terry@lambert.org (Terry Lambert) Cc: hasty@rah.star-gate.com, jkh@time.cdrom.com, terry@lambert.org, james@miller.cs.uwm.edu, dufault@hda.com, hackers@freebsd.org, multimedia@rah.star-gate.com Subject: Re: Amancio's tv program with capture! Message-ID: <199601282200.XAA04058@labinfo.iet.unipi.it> In-Reply-To: <199601282129.OAA01511@phaeton.artisoft.com> from "Terry Lambert" at Jan 28, 96 02:29:05 pm
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> > *First* phase at high speed video just raw dump on the screen. > > *Second phase port the xvideo extensions to XFree86 and > > make necessary changes to the X server. > > That's sexy -- a draggable video window -- resizable as well? Are you > going to put scaling in the copy? Dragging the image just requires changing the DMA address of the frame grabber. Scaling up/down is done in hardware by the Meteor, at no extra cost. Actually, it helps a lot in saving memory bandwidth if you limit to small images. > > Now, for the religious X cult fans if they don't like this approach > > they can always resort to a shared buffer access at the cost of > > lower performance. > > Or those of us with less than $10,000 in video hardware. 8-). Make it US$500, the price of the Meteor. I think it has a good price/performance ratio because it has a very low chip count, *and* thanks to the PCI interface it does not need to have on-board memory, interface to the Video Feature Extension etc. A low end S3 (like mine :-) costs less than US$150. And since the CPU is not involved in the data transfer, all you need is a PCI motherboard. Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================
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