Peter Pentchev

NAME

Audio::Scrobbler - Perl interface to audioscrobbler.com/last.fm

SYNOPSIS

  use Audio::Scrobbler;

  $scrob = new Audio::Scrobbler(cfg => { ... });

  $scrob->handshake();
  $scrob->submit(artist => "foo", album => "hello", track => "world",
    length => 180);

DESCRIPTION

The Audio::Scrobbler module provides a Perl interface to the track submission API of Last.fm's AudioScrobbler - http://www.audioscrobbler.com/. So far, only track submissions are handled; the future plans include access to the various statistics.

METHODS

The Audio::Scrobbler class defines the following methods:

  • new ( cfg => { ... } )

    Create a new Audio::Scrobbler object and initialize it with the provided configuration parameters. The parameters themselves are discussed in the description of the handshake and submit methods below.

  • err (message)

    Retrieves or sets the description of the last error encountered in the operation of this Audio::Scrobbler object.

  • handshake ()

    Perfors a handshake with the AudioScrobbler API via a request to http://post.audioscrobbler.com/.

    This method requires that the following configuration parameters be set:

    • progname

      The name of the program (or plug-in) performing the AudioScrobbler handshake.

    • progver

      The version of the program (or plug-in).

    • username

      The username of the user's AudioScrobbler registration.

    If the handshake is successful, the method returns a true value, and the submit method may be invoked. Otherwise, an appropriate error message may be retrieved via the err method.

    If the fake configuration parameter is set, the handshake method does not actually perform the handshake with the AudioScrobbler API, just simulates a successful handshake and returns a true value.

    If the verbose configuration parameter is set, the handshake method reports its progress with diagnostic messages to the standard output.

  • submit ( info )

    Submits a single track to the AudioScrobbler API. This method may only be invoked after a successful handshake. The track information is contained in the hash referenced by the info parameter; the following elements are used:

    • title

      The track's title.

    • artist

      The name of the artist performing the track.

    • length

      The duration of the track in seconds.

    • album

      The name of the album (optional).

    Also, the submit method requires that the following configuration parameters be set for this Audio::Scrobbler object:

    • username

      The username of the user's AudioScrobbler registration.

    • password

      The password for the AudioScrobbler registration.

    If the submission is successful, the method returns a true value. Otherwise, an appropriate error message may be retrieved via the err method.

    If the fake configuration parameter is set, the submit method does not actually submit the track information to the AudioScrobbler API, just simulates a successful submission and returns a true value.

    If the verbose configuration parameter is set, the submit method reports its progress with diagnostic messages to the standard output.

There are also several methods and functions for the module's internal use:

  • get_ua ()

    Creates or returns the cached LWP::UserAgent object used by the Audio::Scrobbler class for access to the AudioScrobbler API.

  • URLDecode (string)

    Decode a URL-encoded string.

    Obtained from http://glennf.com/writing/hexadecimal.url.encoding.html

  • URLEncode (string)

    Return the URL-encoded representation of a string.

    Obtained from http://glennf.com/writing/hexadecimal.url.encoding.html

TODO

  • Do something with UPDATE responses to the handshake.

  • Honor INTERVAL in some way.

  • Figure out a way to cache unsuccesful submissions for later retrying.

  • Web services - stats!

SEE ALSO

scrobbler-helper(1)

  • http://www.last.fm/

  • http://www.audioscrobbler.com/

  • http://www.audioscrobbler.net/

The home site of the Audio::Scrobbler module is http://devel.ringlet.net/audio/Audio-Scrobbler/

AUTHOR

Peter Pentchev, <roam@ringlet.net>

COPYRIGHT AND LICENSE

Copyright (C) 2005, 2006 by Peter Pentchev.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.7 or, at your option, any later version of Perl 5 you may have available.

$Id: Scrobbler.pm 88 2006-01-02 09:16:32Z roam $