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.\" ========================================================================
.\"
.IX Title "Device::Cdio::Track 3pm"
.TH Device::Cdio::Track 3pm "2018-11-01" "perl v5.28.0" "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"
Device::Cdio::Track \- Class for track aspects of Device::Cdio.
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&    use Device::Cdio::Device;
\&    use Device::Cdio::Track;
\&
\&    $device = Device::Cdio::Device\->new(\-source=>\*(Aq/dev/cdrom\*(Aq);
\&    $track  = $device\->get_last_track();
\&    print "track: %d, last lsn: %d\en", $track\->{track}, track\->get_last_lsn();
\&
\&    $track = $device\->get_first_track();
\&    $format = $rackt\->get_format();
.Ve
.SH "METHODS"
.IX Header "METHODS"
.SS "new"
.IX Subsection "new"
.Vb 1
\&  new(device, track)\->object
.Ve
.PP
Creates a new track object.
.SS "get_audio_channels"
.IX Subsection "get_audio_channels"
.Vb 1
\&  get_audio_channels(cdio, track)\->int
.Ve
.PP
Return number of channels in track: 2 or 4.
Not meaningful if track is not an audio track.
\&\-1 is returned on error and \-2 if the driver doesn't support the
operation.
.SS "get_copy_permit"
.IX Subsection "get_copy_permit"
.Vb 1
\&  get_copy_permit(cdio, track)\->int
.Ve
.PP
Return copy protection status on a track. Is this meaningful
not an audio track?
.SS "get_format"
.IX Subsection "get_format"
.Vb 1
\&  get_format()\->$format
.Ve
.PP
Get the format (e.g. 'audio', 'mode2', 'mode1') of track.
.SS "get_last_lsn"
.IX Subsection "get_last_lsn"
.Vb 1
\&  get_last_lsn()\->lsn
.Ve
.PP
Return the ending \s-1LSN\s0 for a track
\&\f(CW$perlcdio::INVALID_LSN\fR is returned on error.
.SS "get_lba"
.IX Subsection "get_lba"
.Vb 1
\&  get_lba()\->lba
.Ve
.PP
Return the starting \s-1LBA\s0 for a track
\&\f(CW$perlcdio::INVALID_LBA\fR is returned on error.
.SS "get_lsn"
.IX Subsection "get_lsn"
.Vb 1
\&  get_lsn()\->lsn
.Ve
.PP
Return the starting \s-1LSN\s0 for a track
\&\f(CW$perlcdio::INVALID_LSN\fR is returned on error.
.SS "get_msf"
.IX Subsection "get_msf"
.Vb 1
\&  get_msf()
.Ve
.PP
Return the starting \s-1MSF\s0 (minutes/secs/frames) for track number track.
Track numbers usually start at something greater than 0, usually 1.
.PP
Returns string of the form mm:ss:ff if all good, or string 'error' on
error.
.SS "get_preemphasis"
.IX Subsection "get_preemphasis"
.Vb 1
\&  get_preemphasis()\->result
.Ve
.PP
Get linear preemphasis status on an audio track.
This is not meaningful if not an audio track?
.SS "get_track_sec_count"
.IX Subsection "get_track_sec_count"
item \fBget_track_sec_count()\fR\->int
Get the number of sectors between this track an the next.  This
includes any pregap sectors before the start of the next track.
Track numbers usually start at something
greater than 0, usually 1.
.PP
\&\f(CW$perlcdio::INVALID_LSN\fR is returned on error.
.SS "is_track_green"
.IX Subsection "is_track_green"
.Vb 1
\&  is_track_green(cdio, track) \-> bool
.Ve
.PP
Return True if we have \s-1XA\s0 data (green, mode2 form1) or
\&\s-1XA\s0 data (green, mode2 form2). That is track begins:
.PP
.Vb 2
\&  sync \- header \- subheader
\&  12     4      \-  8
.Ve
.SS "get_track_isrc"
.IX Subsection "get_track_isrc"
\&\f(CW$isrc\fR = \f(CW$track\fR\->get_track_isrc($insert_dashes=0);
.PP
Returns an empty string or the International Standard Recording Code.
Which is presented in 4 hyphen-separated substrings: \*(L"CC-XXX-YY-NNNNN\*(R"
.PP
\&\*(L"\s-1CC\*(R"\s0 two-character \s-1ISO 3166\-1\s0 alpha\-2 country code
\&\*(L"\s-1XXX\*(R"\s0 is a three character alphanumeric registrant code
\&\*(L"\s-1YY\*(R"\s0 is the last two digits of the year of registration
     (\s-1NB\s0 not necessarily the date the recording was made)
\&\*(L"\s-1NNNNN\*(R"\s0 is a unique 5\-digit number identifying the particular sound recording.
.SS "set_track"
.IX Subsection "set_track"
.Vb 1
\&  set_track(track_num)
.Ve
.PP
Set a new track number.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Device::Cdio is the top-level module, Device::Cdio::Device is a
class device objects, and Device::Cdio::ISO9660 for working with
\&\s-1ISO9660\s0 systems.
.PP
perlcdio is the lower-level interface to libcdio.
.PP
<http://www.gnu.org/software/libcdio/doxygen/track_8h.html> is
documentation via doxygen of \f(CW\*(C`libiso9660\*(C'\fR.
.SH "AUTHORS"
.IX Header "AUTHORS"
Rocky Bernstein
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (C) 2006, 2012, 2017 Rocky Bernstein <rocky@cpan.org>
.PP
This program is free software: you can redistribute it and/or modify
it under the terms of the \s-1GNU\s0 General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
.PP
This program is distributed in the hope that it will be useful,
but \s-1WITHOUT ANY WARRANTY\s0; without even the implied warranty of
\&\s-1MERCHANTABILITY\s0 or \s-1FITNESS FOR A PARTICULAR PURPOSE.\s0  See the
\&\s-1GNU\s0 General Public License for more details.
.PP
You should have received a copy of the \s-1GNU\s0 General Public License
along with this program.  If not, see The \s-1GNU\s0 General Public
License <http://www.gnu.org/licenses/#GPL>.