NAME

Audio::TagLib::MPEG::Header - An implementation of MP3 frame headers

SYNOPSIS

  use Audio::TagLib::MPEG::Header;

  my $i = Audio::TagLib::MPEG::Header->new($data);
  print $i->layer(), "\n"; # normally got 3

DESCRIPTION

This is an implementation of MPEG Layer III headers. The API follows more or less the binary format of these headers. Refer to http://www.mp3-tech.org/programmer/frame_header.html

new(ByteVector $data): Parses an MPEG header based on $data.
new(Header $h): Does a shallow copy of $h.
DESTROY(): Destroys this Header instance.
BOOL isValid(): Returns true if the frame is at least an appropriate size and has legal values.
%_Version: The MPEG Version. keys %Audio::TagLib::MPEG::Header::_Version lists all available values used in Perl code.
PV version(): Returns the MPEG Version of the header.
IV layer(): Returns the layer version. This will be between the values 1-3.
BOOL protectionEnabled(): Returns true if the MPEG protection bit is enabled.
IV bitrate(): Returns the bitrate encoded in the header.
IV sampleRate(): Returns the sample rate in Hz.
BOOL isPadded(): Returns true if the frame is padded.
%_ChannelMode: There are a few combinations or one or two channel audio that are possible. keys %Audio::TagLib::MPEG::Header::_ChannelMode lists all available values used in Perl code.
PV channelMode(): Returns the channel mode for this frame.
BOOL isCopyrighted(): Returns true if the copyrighted bit is set.
BOOL isOriginal(): Returns true if the "original" bit is set.
IV frameLength(): Returns the frame length.
copy(Header $h): Makes a shallow copy of the header.

EXPORT

None by default.

AUTHOR

Dongxu Ma, <dongxu@cpan.org>

COPYRIGHT AND LICENSE

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.