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Author image Nicholas J Humfrey
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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.

SEE ALSO

http://musicbrainz.org/doc/libdiscid

AUTHOR

Nicholas J. Humfrey <njh@aelius.com>

COPYRIGHT AND LICENSE

The MIT License (MIT)

Copyright (c) 2009-2019 Nicholas J Humfrey

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.