Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 18 May 1998 06:21:51 +0200 (MET DST)
From:      Luigi Rizzo <luigi@labinfo.iet.unipi.it>
To:        kkennawa@physics.adelaide.edu.au (Kris Kennaway)
Cc:        sos@FreeBSD.ORG, rmooney@iss.net, multimedia@FreeBSD.ORG, questions@FreeBSD.ORG, current@FreeBSD.ORG
Subject:   Re: ATAPI CDDA Extraction under FreeBSD
Message-ID:  <199805180421.GAA06530@labinfo.iet.unipi.it>
In-Reply-To: <Pine.SUN.3.90.980518144516.24115B-100000@pilot> from "Kris Kennaway" at May 18, 98 02:48:36 pm

next in thread | previous in thread | raw e-mail | index | archive | help
> > Have you looked at the patches Luigi made back in january ??
> 
> Interesting this should come up now - I picked up Luigi's patches 

ouch, there's too much interest on this stuff! let me repeat, there are
two problems with it:
1) our atapi code does not handle timeouts, and some atapi drives i
   have tried tend to cause timeouts when reading audio tracks or have
   non-compliant behaviour of the audio-read function. As a
   consequence, you risk deadlocks by running this code

2) some atapi drives i have tried have the "jitter" problem (the drive
   does not return the exact block when doing sequential reads), so
   any useful problem should, from time to time, go back and restart
   reading. I don't have a precise algorithm to do this, but tosha does
   not implement it. Probably Charles Herrich's "cdd" program does a
   good job on this.


	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-questions" in the body of the message



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199805180421.GAA06530>