Date: Sat, 14 Mar 1998 12:59:54 +0100 (MET) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: eivind@yes.no (Eivind Eklund) Cc: multimedia@FreeBSD.ORG, hasty@rah.star-gate.com Subject: Re: "Windows 98" Message-ID: <199803141159.MAA17005@labinfo.iet.unipi.it> In-Reply-To: <19980314134748.32118@follo.net> from "Eivind Eklund" at Mar 14, 98 01:47:29 pm
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> I don't have a 5246 :-( I'd have to go with the soft decoding, but it > was somewhat difficult to extract just the right parts to add to the > brooktree driver. You wouldn't happen to have lying around a patch > that contains just that stuff (doesn't have to apply, just have the > correct pieces of code, so I can see which parts are relevant to the > ttext decoding)? it's been quite some time... and no i don't have patches right now. The main differences were: - definition of a new "format" (in practice, i just modified the SECAM entry which was of no use here) to capture only the VBI lines (7 to 22 or so) with the highest available horiz. resolution, and no interleave. - definition of some new ioctl (like LUMA COMB etc, i think they have even got into the current driver) to disable the chroma subcarrier filtering etc, so that the high frequency components of the tetetext data were not cut too much; - (probably) implementation of the read() call to make life easier to the application program. after that, the application only had to do resampling of the signal, locate the sync bytes, etc. etc. cheers 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/ _____________________________|______________________________________ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-multimedia" in the body of the message
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