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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!nntp.coast.net!howland.erols.net!www.nntp.primenet.com!nntp.primenet.com!news1.best.com!nntp1.best.com!usenet From: "Amancio Hasty Jr." <hasty@star-gate.com> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: digital audio extraction from CD-ROM via SCSI Date: Wed, 13 Nov 1996 04:25:06 -0800 Organization: Best Internet Communications Lines: 53 Message-ID: <3289BE22.41C67EA6@star-gate.com> References: <55lonc$hi@hannibal.camelot.de> <55slgr$h3@anorak.kew.utl> <SCOTT.96Nov8141107@crux.dcs.qmw.ac.uk> <560qrf$1g3@itchy.serv.net> <328782CA.4F5E859@lambert.org> NNTP-Posting-Host: rah.star-gate.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Mozilla 3.0 (X11; U; FreeBSD 2.2-CURRENT i386) To: Terry Lambert <terry@lambert.org> Terry Lambert wrote: > > Sean T. Lamont . wrote: > ] In article <SCOTT.96Nov8141107@crux.dcs.qmw.ac.uk>, > ] Scott Mitchell <scott@dcs.qmw.ac.uk> wrote: > ] > ] >Or, you could (presumably) just suck blocks of audio data off of > ] >the disk and get your sound as raw bits. > > [ ... ] > > ] the audio data is at a lower level than the cd-data. You need > ] a non-standard CD rom to do this , most won't allow it. The only > ] one I know for sure that will do it is the one they ship with > ] the HPPA systems ; this isn't manufactured by HP, so it has a > ] real part number for a non-HP mfr, but I don't know what it is. > > The audio data was protected from access by CDROMs during > the early days for the same reason that DAT tapes are useless > for audio data: to "protect" the recording industry. > > The first CDROM capable of reading audio CDROM contents as > digital data was the Hitachi CDROM sold by SGI. > >> > You should contact the FreeBSD multimedia mailing list (or > Amancio Hasty, the FreeBSD multimedia guru) for driver information > (I believe Amancio even had CDI working last time I checked). Tnks Terry. Brian Litzinger and I did the original work to decode videocd and cdi to allow the Talisman Mpeg player to play back videcds and cdis on FreeBSD. For more info on the talisman check out http://www.omt.com. After I did the cdi code , Brian pretty much took over the code to incorporate VideoCD. Unfortunatly, although the original code to decode cdis was not based upon Philips specs the VideoCD stuff is and Philips has strict rules about publishing code based upon their specs. Currently, "cdd" can read audio cds or ReD book CDs with a variety of scsi CDs . Please mail to the multimedia mailing multimedia@freebsd.org or to its author henrich@msu.edu for further details. -- Amancio Hasty Hasty Software Consulting Services Tel: 415-495-3046 Fax: 415-495-3046 Cellular: 415-309-8434 e-mail: hasty@star-gate.com Powered by FreeBSD