NAME

       MusicBrainz::DiscID - Perl interface for the MusicBrainz libdiscid library

SYNOPSIS

         use MusicBrainz::DiscID;

         my $discid = MusicBrainz::DiscID->new();
         if ( $disc->read() == 0 ) {
             print STDERR "Error: " . $discid->error_msg() . "\n";
             exit(1);
         }
         print "DiscID: " . $discid->id() . "\n";

DESCRIPTION

       MusicBrainz::DiscID is a class to calculate a MusicBrainz DiscID from an audio CD in the
       drive. The coding style is slightly different to the C interface to libdiscid, because it
       makes use of perl's Object Oriented functionality.

       MusicBrainz::DiscID::default_device()
           Returns a device string for the default device for this platform.

       MusicBrainz::DiscID::new( [$device] )
           Construct a new DiscID object.

           As an optional argument the name of the device to read the ID from may be given. If
           you don't specify a device here you can later read the ID with the read method.

       $discid->error_msg()
           Return a human-readable error message of the last error that occured.

       $discid->first_track_num()
           Return the number of the first track on this disc (usually 1).  Returns undef if no ID
           was yet read.

       $discid->last_track_num()
           Return the number of the last track on this disc.

       $discid->id()
           Returns the DiscID as a string.  Returns undef if no ID was yet read.

       $discid->last_track_num()
           Return the number of the last track on this disc.  Returns undef if no ID was yet
           read.

       $discid->put( $first_track, $sectors, $offset1, $offset2, ... )
           This function may be used if the TOC has been read earlier and you want to calculate
           the disc ID afterwards, without accessing the disc drive.

       $discid->read( [$device] )
           Read the disc ID from the given device.  If no device is given the default device of
           the platform will be used.  On error, this function returns false and sets the error
           message which you can access $discid->error_msg().

       $discid->sectors()
           Return the length of the disc in sectors.  Returns undef if no ID was yet read.

       $discid->submission_url()
           Returns a submission URL for the DiscID as a string.  Returns undef if no ID was yet
           read.

       $discid->track_length( $track_num )
           Return the length of a track in sectors.

       $discid->track_offset( $track_num )
           Return the sector offset of a track.

       $discid->webservice_url()
           Returns a Webservice URL for the DiscID as a string.  Returns undef if no ID was yet
           read.

SEE ALSO

       <http://musicbrainz.org/doc/libdiscid>

AUTHOR

       Nicholas J. Humfrey <njh@aelius.com>

COPYRIGHT AND LICENSE

       Copyright (C) 2009 Nicholas J. Humfrey

       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 2 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.