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Perl bindings for libcdio
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README

This add Perl bindings for the GNU CD Input and Control library
(libcdio) and it's ISO 9660 library (libiso9660) which are written in
C. The library encapsulates CD-ROM reading and control and ISO 9660
handling. Perl programs wishing to be oblivious of the OS- and
device-dependent properties of a CD-ROM can use this library.

The encapsulation is done in two parts. The lower-level Perl interface
creates perlcdio and perliso9660 libraries and these are generated by
SWIG.

There are also object-oriented modules that use perlcdio and
perliso9660. Although perlcdio and perliso9660 are perfectly usable on
there own, it is expected that the Device::Cdio... modules are what
most people will use. As perlcdio and perliso9660 more closely model
the C interface, it is conceivable (if unlikely) that die-hard libcdio
or libiso9660 C users who are very familiar with that interface may
use that.

It is probably possible to change the SWIG in such a way to combine
the low-level and OO pieces. However there are the problems. First,
I'm not that much of a SWIG expert. Second it looks as though the
resulting SWIG code would be more complex. Third the separation makes
translation very straight forward to understand and maintain: first we
get what's in C into Perl as a one-to-one translation. Then we
implement some nice Perl abstraction off of that. The abstraction can
be modified without having to redo the underlying translation. (But
the reverse is generally not true: usually changes to the C-to-Perl
translation, perlcdio or perliso9660, do result in small, but obvious
and straightforward changes to the abstraction layer cdio.)

GNU CD Imput and Control Library is rather large, and yet may yet grow
a bit. (UDF support may be on the horizon.)  So what is here is
incomplete; over time it may grow to completion, depending on various
factors: e.g. whether others will help out (hint).

Some of the incompleteness is due to my lack of understanding of how
to get SWIG to accomplish wrapping various return values. If you know
how to do better, please let me know. Likewise suggestions on how to
improve classes or Python interaction are more than welcome.

Sections of libcdio that have been left out wholesale are the (SCSI)
MMC commands, the cdparanoia library, CD-Text handling. About 1/2 of
the ISO-9660 library has been done. Of the audio controls, I put in
those things that didn't require any thought.

There is much to be done - you want to help out, please do so!

Standalone documentation via perlpod. See also the
programs in the example directory.


INSTALLATION

To install this module, run the following commands:

    perl Build.PL
    ./Build
    ./Build test
    ./Build install


For compatibility, the older idiom is tolerated:

    perl Makefile.PL
    make
    make test
    make install


DEPENDENCIES

libcdio


COPYRIGHT AND LICENSE

  Copyright (C) 2006, 2008, 2011 Rocky Bernstein <rocky@cpan.org>

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
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