*BSD News Article 96334


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: CD Audio extraction under FreeBSD?
Date: 27 May 1997 23:03:27 GMT
Organization: Private BSD site, Dresden
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:41727

myers@iname.com (David Myers) wrote:

> Are there any tools around that will extract CD Audio tracks under
> FreeBSD?

There's Charles Henrich's cdd.  Also, Jean-Marc Zucchoni was really
active in this field (CD-DA, CD-R) lately.  I think his cd-write port
also allows reading audio data.

Charles will be able to tell you stories about the various problems
you encounter when trying to read CD-DA with too cheap drives... it's
not that trivial as reading a CD-ROM.  CD-ROM data imposes an
additional sector address mark along with the ECC bytes.  This
compensates for crappy mechanics that are poor in following a track
continuously.  With CD-DA, you don't have this address mark anymore,
thusly suffer from the goodwill of the drive (or from jitters if it's
actually more of a badwill).

> How much do you have to massage the data, once the audio track is
> extracted?  I.e., any big endian/little endian issues, that sort of thing?

Depends on the drive.  If you wanna write it with the same drive
you've read it before, one would assume you don't have to convert
them.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)