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.\" ========================================================================
.\"
.IX Title "CD 3pm"
.TH CD 3pm "2014-08-15" "perl v5.20.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
Audio::CD \- Perl interface to libcdaudio (cd + cddb)
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&  use Audio::CD ();
\&  my $cd = Audio::CD\->init;
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Audio::CD provides a Perl interface to libcdaudio by Tony Arcieri,
available from http://cdcd.undergrid.net/
.PP
Several classes provide glue for the libcdaudio functions and data
structures.
.SH "Audio::CD Class"
.IX Header "Audio::CD Class"
.IP "init" 4
.IX Item "init"
Initialize the Audio::CD object:
.Sp
.Vb 1
\& my $cd = Audio::CD\->init;
.Ve
.IP "stat" 4
.IX Item "stat"
Stat the \fIAudio::CD\fR object, returns an \fIAudio::CD::Info\fR object.
.Sp
.Vb 1
\& my $info = $cd\->stat;
.Ve
.IP "cddb" 4
.IX Item "cddb"
Returns an \fIAudio::CDDB\fR object.
.Sp
.Vb 1
\& my $cddb = $cd\->cddb;
.Ve
.IP "play" 4
.IX Item "play"
Play the given cd track (defaults to 1).
.Sp
.Vb 1
\& $cd\->play(1);
.Ve
.IP "stop" 4
.IX Item "stop"
Stop the cd.
.Sp
.Vb 1
\& $cd\->stop;
.Ve
.IP "pause" 4
.IX Item "pause"
Pause the cd.
.Sp
.Vb 1
\& $cd\->pause;
.Ve
.IP "resume" 4
.IX Item "resume"
Resume the cd.
.Sp
.Vb 1
\& $cd\->resume;
.Ve
.IP "eject" 4
.IX Item "eject"
Eject the cd.
.Sp
.Vb 1
\& $cd\->eject;
.Ve
.IP "close" 4
.IX Item "close"
Close the cd tray.
.Sp
.Vb 1
\& $cd\->close;
.Ve
.IP "play_frames" 4
.IX Item "play_frames"
.Vb 1
\& $cd\->play_frames($startframe, $endframe);
.Ve
.IP "play_track_pos" 4
.IX Item "play_track_pos"
.Vb 1
\& $cd\->play_track_pos($strarttrack, $endtrack, $startpos);
.Ve
.IP "play_track" 4
.IX Item "play_track"
.Vb 1
\& $cd\->play_track($strarttrack, $endtrack);
.Ve
.IP "track_advance" 4
.IX Item "track_advance"
.Vb 1
\& $cd\->track_advance($endtrack, $minutes, $seconds);
.Ve
.IP "advance" 4
.IX Item "advance"
.Vb 1
\& $cd\->advance($minutes, $seconds);
.Ve
.IP "get_volume" 4
.IX Item "get_volume"
Returns an \fIAudio::CD::Volume\fR object.
.Sp
.Vb 1
\& my $vol = $cd\->get_volume;
.Ve
.IP "set_volume" 4
.IX Item "set_volume"
.Vb 1
\& $cd\->set_volume($vol);
.Ve
.SH "Audio::CDDB Class"
.IX Header "Audio::CDDB Class"
.IP "discid" 4
.IX Item "discid"
.Vb 1
\& my $id = $cddb\->discid;
.Ve
.IP "lookup" 4
.IX Item "lookup"
Does a cddb lookup and returns an \fIAudio::CD::Data\fR object.
.Sp
.Vb 1
\& my $data = $cddb\->lookup;
.Ve
.SH "Audio::CD::Data Class"
.IX Header "Audio::CD::Data Class"
.IP "artist" 4
.IX Item "artist"
.Vb 1
\& my $artist = $data\->artist;
.Ve
.IP "title" 4
.IX Item "title"
.Vb 1
\& my $title = $data\->title;
.Ve
.IP "genre" 4
.IX Item "genre"
.Vb 1
\& my $genre = $data\->genre;
.Ve
.IP "tracks" 4
.IX Item "tracks"
Returns an array reference of \fIAudio::CD::Track\fR objects.
.Sp
.Vb 2
\& my $foo = $data\->tracks($info);
\& my @tracks = @$foo;
.Ve
.SH "Audio::CD::Track Class"
.IX Header "Audio::CD::Track Class"
.IP "name" 4
.IX Item "name"
.Vb 1
\& my $name = $track\->name;
.Ve
.SH "Audio::CD::Info Class"
.IX Header "Audio::CD::Info Class"
.IP "mode" 4
.IX Item "mode"
Returns the \s-1CD\s0 mode, one of \s-1PLAYING, PAUSED, COMPLETED, NOSTATUS\s0;
.Sp
.Vb 2
\& my $track = $info\->mode;
\& print "playing" if $info\->mode == Audio::CD::PLAYING;
.Ve
.IP "present" 4
.IX Item "present"
Returns true if a disc is present.
.Sp
.Vb 1
\& $cd\->play if $info\->present;
.Ve
.IP "current_track" 4
.IX Item "current_track"
Returns the current track number being played or paused.
.Sp
.Vb 1
\& my $track = $info\->current_track;
.Ve
.IP "first_track" 4
.IX Item "first_track"
Returns the number of the first track on the \s-1CD.\s0
.Sp
.Vb 1
\& my $track = $info\->first_track;
.Ve
.IP "total_tracks" 4
.IX Item "total_tracks"
Returns the total number of tracks on the cd.
.Sp
.Vb 1
\& my $track = $info\->total_tracks;
.Ve
.IP "track_time" 4
.IX Item "track_time"
Returns the current track play time:
.Sp
.Vb 1
\& my($minutes, $seconds) = $info\->track_time;
.Ve
.IP "time" 4
.IX Item "time"
Returns the current disc play time:
.Sp
.Vb 1
\& my($minutes, $seconds) = $info\->time;
.Ve
.IP "length" 4
.IX Item "length"
Returns the disc length time:
.Sp
.Vb 1
\& my($minutes, $seconds) = $info\->length;
.Ve
.IP "tracks" 4
.IX Item "tracks"
Returns an array reference of \fIAudio::CD::Info::Track\fR objects.
.Sp
.Vb 2
\& my $foo = $info\->tracks;
\& my @tracks = @$foo;
.Ve
.SH "Audio::CD::Info::Track Class"
.IX Header "Audio::CD::Info::Track Class"
.IP "length" 4
.IX Item "length"
Returns the track length time:
.Sp
.Vb 1
\& my($minutes, $seconds) = $tinfo\->length;
.Ve
.IP "pos" 4
.IX Item "pos"
Returns the track position on the \s-1CD:\s0
.Sp
.Vb 1
\& my($minutes, $seconds) = $tinfo\->pos;
.Ve
.IP "type" 4
.IX Item "type"
Returns the track type (either \s-1TRACK_AUDIO\s0 or \s-1TRACK_DATA\s0):
.Sp
.Vb 5
\& if ($tinfo\->type == Audio::CD::TRACK_AUDIO) {
\&   print "audio track\en";
\& } elsif ($tinfo\->type == Audio::CD::TRACK_DATA) {
\&   print "data track\en";
\& }
.Ve
.IP "is_audio" 4
.IX Item "is_audio"
Returns true if the track is an audio track; equivalent to the test:
.Sp
.Vb 1
\& $tinfo\->type == Audio::CD::TRACK_AUDIO ? 1 : 0
.Ve
.IP "is_data" 4
.IX Item "is_data"
Returns true if the track is a data track; equivalent to the test:
.Sp
.Vb 1
\& $tinfo\->type == Audio::CD::TRACK_DATA ? 1 : 0
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIXmms\fR\|(3)
.SH "AUTHOR"
.IX Header "AUTHOR"
Perl interface by Doug MacEachern
.PP
libcdaudio and cddb_lookup.c by Tony Arcieri