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From: Steffen Huber <steffen.huber@gmx.de>
Newsgroups: comp.lang.ada
Subject: Re: Retrieve CD-R TOC
Date: Mon, 15 Jul 2002 16:47:16 +0200
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Date: 2002-07-15T16:47:16+02:00
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Filoux wrote:
> Hello!!

Hi,

> I'd like to know if it's possible to retrieve the table of content
> (TOC) of a CD with ADA.

Nearly everything is possible with Ada ;-)

> I'm currently running linux and I need to get
> some information (like cd content, size of files, etc...).

Hmmmm...size of files? Unless I completely misunderstand you, you won't be
able to get the size of files out of a CD's TOC. The TOC has only
information about the start and the type (audio, data...) of a CD track
(and indexes and possibly CD Text and if it is 2 or 4 channel stereo
and if it is a multisession disc...).

The TOC does not know anything about files - you would have to examine
the data blocks on a CD and decode the ISO9660 (or Joliet or RockRidge)
directory information.

> I don't want to do it by executing a system call like (du -ah) but
> I'd like to do it by accessing the TOC of the CD (or DVD).

I would suggest that you look at the cdrecord sources and create some
bindings to the SCSI transportation layer that cdrecord uses.

For information about the Read TOC SCSI/IDE command, look at the
ATAPI and SCSI-II (and probably MMC) specs.

I have written a nice library to do things like that (and much more,
like e.g. writing CDs), but it is only usable for the RISC OS
operating system, and it is all inside a commercial CD writing
package ;-)

Steffen

-- 
steffen.huber@gmx.de               steffen@huber-net.de
GCC for RISC OS  - http://www.arcsite.de/hp/gcc/
Private homepage - http://www.huber-net.de/