1581 lines
53 KiB
Perl
1581 lines
53 KiB
Perl
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#------------------------------------------------------------------------------
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# File: ID3.pm
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#
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# Description: Read ID3 meta information
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#
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# Revisions: 09/12/2005 - P. Harvey Created
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#
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# References: 1) http://www.id3.org/
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# 2) http://www.mp3-tech.org/
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# 3) http://www.fortunecity.com/underworld/sonic/3/id3tag.html
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#------------------------------------------------------------------------------
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package Image::ExifTool::ID3;
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use strict;
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use vars qw($VERSION);
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use Image::ExifTool qw(:DataAccess :Utils);
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$VERSION = '1.51';
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sub ProcessID3v2($$$);
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sub ProcessPrivate($$$);
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sub ProcessSynText($$$);
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sub ConvertID3v1Text($$);
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sub ConvertTimeStamp($);
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# audio formats that we process after an ID3v2 header (in order)
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my @audioFormats = qw(APE MPC FLAC OGG MP3);
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# audio formats where the processing proc is in a differently-named module
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my %audioModule = (
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MP3 => 'ID3',
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OGG => 'Ogg',
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);
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# picture types for 'PIC' and 'APIC' tags
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# (Note: Duplicated in ID3, ASF and FLAC modules!)
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my %pictureType = (
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0 => 'Other',
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1 => '32x32 PNG Icon',
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2 => 'Other Icon',
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3 => 'Front Cover',
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4 => 'Back Cover',
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5 => 'Leaflet',
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6 => 'Media',
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7 => 'Lead Artist',
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8 => 'Artist',
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9 => 'Conductor',
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10 => 'Band',
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11 => 'Composer',
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12 => 'Lyricist',
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13 => 'Recording Studio or Location',
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14 => 'Recording Session',
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15 => 'Performance',
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16 => 'Capture from Movie or Video',
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17 => 'Bright(ly) Colored Fish',
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18 => 'Illustration',
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19 => 'Band Logo',
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20 => 'Publisher Logo',
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);
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my %dateTimeConv = (
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ValueConv => 'require Image::ExifTool::XMP; Image::ExifTool::XMP::ConvertXMPDate($val)',
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PrintConv => '$self->ConvertDateTime($val)',
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);
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# This table is just for documentation purposes
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%Image::ExifTool::ID3::Main = (
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VARS => { NO_ID => 1 },
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NOTES => q{
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ExifTool extracts ID3 information from MP3, MPEG, AIFF, OGG, FLAC, APE, MPC
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and RealAudio files. ID3v2 tags which support multiple languages (eg.
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Comment and Lyrics) are extracted by specifying the tag name, followed by a
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dash ('-'), then a 3-character ISO 639-2 language code (eg. "Comment-spa").
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See L<http://www.id3.org/> for the official ID3 specification and
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L<http://www.loc.gov/standards/iso639-2/php/code_list.php> for a list of ISO
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639-2 language codes.
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},
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ID3v1 => {
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Name => 'ID3v1',
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SubDirectory => { TagTable => 'Image::ExifTool::ID3::v1' },
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},
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ID3v1Enh => {
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Name => 'ID3v1_Enh',
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SubDirectory => { TagTable => 'Image::ExifTool::ID3::v1_Enh' },
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},
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ID3v22 => {
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Name => 'ID3v2_2',
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SubDirectory => { TagTable => 'Image::ExifTool::ID3::v2_2' },
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},
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ID3v23 => {
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Name => 'ID3v2_3',
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SubDirectory => { TagTable => 'Image::ExifTool::ID3::v2_3' },
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},
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ID3v24 => {
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Name => 'ID3v2_4',
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SubDirectory => { TagTable => 'Image::ExifTool::ID3::v2_4' },
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},
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);
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# Mapping for ID3v1 Genre numbers
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my %genre = (
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0 => 'Blues',
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1 => 'Classic Rock',
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2 => 'Country',
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3 => 'Dance',
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4 => 'Disco',
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5 => 'Funk',
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6 => 'Grunge',
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7 => 'Hip-Hop',
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8 => 'Jazz',
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9 => 'Metal',
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10 => 'New Age',
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11 => 'Oldies',
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12 => 'Other',
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13 => 'Pop',
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14 => 'R&B',
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15 => 'Rap',
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16 => 'Reggae',
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17 => 'Rock',
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18 => 'Techno',
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19 => 'Industrial',
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20 => 'Alternative',
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21 => 'Ska',
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22 => 'Death Metal',
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23 => 'Pranks',
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24 => 'Soundtrack',
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25 => 'Euro-Techno',
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26 => 'Ambient',
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27 => 'Trip-Hop',
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28 => 'Vocal',
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29 => 'Jazz+Funk',
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30 => 'Fusion',
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31 => 'Trance',
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32 => 'Classical',
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33 => 'Instrumental',
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34 => 'Acid',
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35 => 'House',
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36 => 'Game',
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37 => 'Sound Clip',
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38 => 'Gospel',
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39 => 'Noise',
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40 => 'Alt. Rock', # (was AlternRock)
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41 => 'Bass',
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42 => 'Soul',
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43 => 'Punk',
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44 => 'Space',
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45 => 'Meditative',
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46 => 'Instrumental Pop',
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47 => 'Instrumental Rock',
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48 => 'Ethnic',
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49 => 'Gothic',
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50 => 'Darkwave',
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51 => 'Techno-Industrial',
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52 => 'Electronic',
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53 => 'Pop-Folk',
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54 => 'Eurodance',
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55 => 'Dream',
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56 => 'Southern Rock',
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57 => 'Comedy',
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58 => 'Cult',
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59 => 'Gangsta Rap', # (was Gansta)
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60 => 'Top 40',
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61 => 'Christian Rap',
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62 => 'Pop/Funk',
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63 => 'Jungle',
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64 => 'Native American',
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65 => 'Cabaret',
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66 => 'New Wave',
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67 => 'Psychedelic', # (was misspelt)
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68 => 'Rave',
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69 => 'Showtunes',
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70 => 'Trailer',
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71 => 'Lo-Fi',
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72 => 'Tribal',
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73 => 'Acid Punk',
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74 => 'Acid Jazz',
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75 => 'Polka',
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76 => 'Retro',
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77 => 'Musical',
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78 => 'Rock & Roll',
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79 => 'Hard Rock',
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# The following genres are Winamp extensions
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80 => 'Folk',
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81 => 'Folk-Rock',
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82 => 'National Folk',
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83 => 'Swing',
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84 => 'Fast-Fusion', # (was Fast Fusion)
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85 => 'Bebop', # (was misspelt)
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86 => 'Latin',
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87 => 'Revival',
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88 => 'Celtic',
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89 => 'Bluegrass',
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90 => 'Avantgarde',
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91 => 'Gothic Rock',
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92 => 'Progressive Rock',
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93 => 'Psychedelic Rock',
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94 => 'Symphonic Rock',
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95 => 'Slow Rock',
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96 => 'Big Band',
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97 => 'Chorus',
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98 => 'Easy Listening',
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99 => 'Acoustic',
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100 => 'Humour',
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101 => 'Speech',
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102 => 'Chanson',
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103 => 'Opera',
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104 => 'Chamber Music',
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105 => 'Sonata',
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106 => 'Symphony',
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107 => 'Booty Bass',
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108 => 'Primus',
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109 => 'Porn Groove',
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110 => 'Satire',
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111 => 'Slow Jam',
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112 => 'Club',
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113 => 'Tango',
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114 => 'Samba',
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115 => 'Folklore',
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116 => 'Ballad',
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117 => 'Power Ballad',
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118 => 'Rhythmic Soul',
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119 => 'Freestyle',
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120 => 'Duet',
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121 => 'Punk Rock',
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122 => 'Drum Solo',
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123 => 'A Cappella', # (was Acapella)
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124 => 'Euro-House',
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125 => 'Dance Hall',
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# ref http://yar.hole.ru/MP3Tech/lamedoc/id3.html
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126 => 'Goa',
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127 => 'Drum & Bass',
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128 => 'Club-House',
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129 => 'Hardcore',
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130 => 'Terror',
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131 => 'Indie',
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132 => 'BritPop',
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133 => 'Afro-Punk', # (was Negerpunk)
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134 => 'Polsk Punk',
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135 => 'Beat',
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136 => 'Christian Gangsta Rap', # (was Christian Gangsta)
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137 => 'Heavy Metal',
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138 => 'Black Metal',
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139 => 'Crossover',
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140 => 'Contemporary Christian', # (was Contemporary C)
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141 => 'Christian Rock',
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142 => 'Merengue',
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143 => 'Salsa',
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144 => 'Thrash Metal',
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145 => 'Anime',
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146 => 'JPop',
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147 => 'Synthpop', # (was SynthPop)
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# ref http://alicja.homelinux.com/~mats/text/Music/MP3/ID3/Genres.txt
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# (also used to update some Genres above)
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148 => 'Abstract',
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149 => 'Art Rock',
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150 => 'Baroque',
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151 => 'Bhangra',
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152 => 'Big Beat',
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153 => 'Breakbeat',
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154 => 'Chillout',
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155 => 'Downtempo',
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156 => 'Dub',
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157 => 'EBM',
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158 => 'Eclectic',
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159 => 'Electro',
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160 => 'Electroclash',
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161 => 'Emo',
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162 => 'Experimental',
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163 => 'Garage',
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164 => 'Global',
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165 => 'IDM',
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166 => 'Illbient',
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167 => 'Industro-Goth',
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168 => 'Jam Band',
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169 => 'Krautrock',
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170 => 'Leftfield',
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171 => 'Lounge',
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172 => 'Math Rock',
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173 => 'New Romantic',
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174 => 'Nu-Breakz',
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175 => 'Post-Punk',
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176 => 'Post-Rock',
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177 => 'Psytrance',
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178 => 'Shoegaze',
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179 => 'Space Rock',
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180 => 'Trop Rock',
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181 => 'World Music',
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182 => 'Neoclassical',
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183 => 'Audiobook',
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184 => 'Audio Theatre',
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185 => 'Neue Deutsche Welle',
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186 => 'Podcast',
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187 => 'Indie Rock',
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188 => 'G-Funk',
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189 => 'Dubstep',
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190 => 'Garage Rock',
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191 => 'Psybient',
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255 => 'None',
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# ID3v2 adds some text short forms...
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CR => 'Cover',
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RX => 'Remix',
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);
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# Tags for ID3v1
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%Image::ExifTool::ID3::v1 = (
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PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
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GROUPS => { 1 => 'ID3v1', 2 => 'Audio' },
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PRIORITY => 0, # let ID3v2 tags replace these if they come later
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3 => {
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Name => 'Title',
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Format => 'string[30]',
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ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
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},
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33 => {
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Name => 'Artist',
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Groups => { 2 => 'Author' },
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Format => 'string[30]',
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ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
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},
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63 => {
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Name => 'Album',
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Format => 'string[30]',
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ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
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},
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93 => {
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Name => 'Year',
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Groups => { 2 => 'Time' },
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Format => 'string[4]',
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},
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97 => {
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Name => 'Comment',
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Format => 'string[30]',
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||
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ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
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||
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},
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||
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125 => { # ID3v1.1 (ref http://en.wikipedia.org/wiki/ID3#Layout)
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Name => 'Track',
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Format => 'int8u[2]',
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Notes => 'v1.1 addition -- last 2 bytes of v1.0 Comment field',
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||
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RawConv => '($val =~ s/^0 // and $val) ? $val : undef',
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||
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},
|
||
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127 => {
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Name => 'Genre',
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||
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Notes => 'CR and RX are ID3v2 only',
|
||
|
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Format => 'int8u',
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||
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PrintConv => \%genre,
|
||
|
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PrintConvColumns => 3,
|
||
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},
|
||
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);
|
||
|
|
|
||
|
|
# ID3v1 "Enhanced TAG" information (ref 3)
|
||
|
|
%Image::ExifTool::ID3::v1_Enh = (
|
||
|
|
PROCESS_PROC => \&Image::ExifTool::ProcessBinaryData,
|
||
|
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GROUPS => { 1 => 'ID3v1_Enh', 2 => 'Audio' },
|
||
|
|
NOTES => 'ID3 version 1 "Enhanced TAG" information (not part of the official spec).',
|
||
|
|
PRIORITY => 0, # let ID3v2 tags replace these if they come later
|
||
|
|
4 => {
|
||
|
|
Name => 'Title2',
|
||
|
|
Format => 'string[60]',
|
||
|
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ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
|
||
|
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},
|
||
|
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64 => {
|
||
|
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Name => 'Artist2',
|
||
|
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Groups => { 2 => 'Author' },
|
||
|
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Format => 'string[60]',
|
||
|
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ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
|
||
|
|
},
|
||
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124 => {
|
||
|
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Name => 'Album2',
|
||
|
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Format => 'string[60]',
|
||
|
|
ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
|
||
|
|
},
|
||
|
|
184 => {
|
||
|
|
Name => 'Speed',
|
||
|
|
Format => 'int8u',
|
||
|
|
PrintConv => {
|
||
|
|
1 => 'Slow',
|
||
|
|
2 => 'Medium',
|
||
|
|
3 => 'Fast',
|
||
|
|
4 => 'Hardcore',
|
||
|
|
},
|
||
|
|
},
|
||
|
|
185 => {
|
||
|
|
Name => 'Genre',
|
||
|
|
Format => 'string[30]',
|
||
|
|
ValueConv => 'Image::ExifTool::ID3::ConvertID3v1Text($self,$val)',
|
||
|
|
},
|
||
|
|
215 => {
|
||
|
|
Name => 'StartTime',
|
||
|
|
Format => 'string[6]',
|
||
|
|
},
|
||
|
|
221 => {
|
||
|
|
Name => 'EndTime',
|
||
|
|
Format => 'string[6]',
|
||
|
|
},
|
||
|
|
);
|
||
|
|
|
||
|
|
# Tags for ID2v2.2
|
||
|
|
%Image::ExifTool::ID3::v2_2 = (
|
||
|
|
PROCESS_PROC => \&Image::ExifTool::ID3::ProcessID3v2,
|
||
|
|
GROUPS => { 1 => 'ID3v2_2', 2 => 'Audio' },
|
||
|
|
NOTES => q{
|
||
|
|
ExifTool extracts mainly text-based tags from ID3v2 information. The tags
|
||
|
|
in the tables below are those extracted by ExifTool, and don't represent a
|
||
|
|
complete list of available ID3v2 tags.
|
||
|
|
|
||
|
|
ID3 version 2.2 tags. (These are the tags written by iTunes 5.0.)
|
||
|
|
},
|
||
|
|
CNT => 'PlayCounter',
|
||
|
|
COM => 'Comment',
|
||
|
|
IPL => 'InvolvedPeople',
|
||
|
|
PIC => {
|
||
|
|
Name => 'Picture',
|
||
|
|
Groups => { 2 => 'Preview' },
|
||
|
|
Binary => 1,
|
||
|
|
Notes => 'the 3 tags below are also extracted from this PIC frame',
|
||
|
|
},
|
||
|
|
'PIC-1' => { Name => 'PictureFormat', Groups => { 2 => 'Image' } },
|
||
|
|
'PIC-2' => {
|
||
|
|
Name => 'PictureType',
|
||
|
|
Groups => { 2 => 'Image' },
|
||
|
|
PrintConv => \%pictureType,
|
||
|
|
SeparateTable => 1,
|
||
|
|
},
|
||
|
|
'PIC-3' => { Name => 'PictureDescription', Groups => { 2 => 'Image' } },
|
||
|
|
POP => {
|
||
|
|
Name => 'Popularimeter',
|
||
|
|
PrintConv => '$val=~s/^(.*?) (\d+) (\d+)$/$1 Rating=$2 Count=$3/s; $val',
|
||
|
|
},
|
||
|
|
SLT => {
|
||
|
|
Name => 'SynLyrics',
|
||
|
|
SubDirectory => { TagTable => 'Image::ExifTool::ID3::SynLyrics' },
|
||
|
|
},
|
||
|
|
TAL => 'Album',
|
||
|
|
TBP => 'BeatsPerMinute',
|
||
|
|
TCM => 'Composer',
|
||
|
|
TCO =>{
|
||
|
|
Name => 'Genre',
|
||
|
|
Notes => 'uses same lookup table as ID3v1 Genre',
|
||
|
|
PrintConv => 'Image::ExifTool::ID3::PrintGenre($val)',
|
||
|
|
},
|
||
|
|
TCP => { Name => 'Compilation', PrintConv => { 0 => 'No', 1 => 'Yes' } }, # iTunes
|
||
|
|
TCR => { Name => 'Copyright', Groups => { 2 => 'Author' } },
|
||
|
|
TDA => { Name => 'Date', Groups => { 2 => 'Time' } },
|
||
|
|
TDY => 'PlaylistDelay',
|
||
|
|
TEN => 'EncodedBy',
|
||
|
|
TFT => 'FileType',
|
||
|
|
TIM => { Name => 'Time', Groups => { 2 => 'Time' } },
|
||
|
|
TKE => 'InitialKey',
|
||
|
|
TLA => 'Language',
|
||
|
|
TLE => 'Length',
|
||
|
|
TMT => 'Media',
|
||
|
|
TOA => { Name => 'OriginalArtist', Groups => { 2 => 'Author' } },
|
||
|
|
TOF => 'OriginalFileName',
|
||
|
|
TOL => 'OriginalLyricist',
|
||
|
|
TOR => 'OriginalReleaseYear',
|
||
|
|
TOT => 'OriginalAlbum',
|
||
|
|
TP1 => { Name => 'Artist', Groups => { 2 => 'Author' } },
|
||
|
|
TP2 => 'Band',
|
||
|
|
TP3 => 'Conductor',
|
||
|
|
TP4 => 'InterpretedBy',
|
||
|
|
TPA => 'PartOfSet',
|
||
|
|
TPB => 'Publisher',
|
||
|
|
TRC => 'ISRC', # (international standard recording code)
|
||
|
|
TRD => 'RecordingDates',
|
||
|
|
TRK => 'Track',
|
||
|
|
TSI => 'Size',
|
||
|
|
TSS => 'EncoderSettings',
|
||
|
|
TT1 => 'Grouping',
|
||
|
|
TT2 => 'Title',
|
||
|
|
TT3 => 'Subtitle',
|
||
|
|
TXT => 'Lyricist',
|
||
|
|
TXX => 'UserDefinedText',
|
||
|
|
TYE => { Name => 'Year', Groups => { 2 => 'Time' } },
|
||
|
|
ULT => 'Lyrics',
|
||
|
|
WAF => 'FileURL',
|
||
|
|
WAR => { Name => 'ArtistURL', Groups => { 2 => 'Author' } },
|
||
|
|
WAS => 'SourceURL',
|
||
|
|
WCM => 'CommercialURL',
|
||
|
|
WCP => { Name => 'CopyrightURL', Groups => { 2 => 'Author' } },
|
||
|
|
WPB => 'PublisherURL',
|
||
|
|
WXX => 'UserDefinedURL',
|
||
|
|
# the following written by iTunes 10.5 (ref PH)
|
||
|
|
RVA => 'RelativeVolumeAdjustment',
|
||
|
|
TST => 'TitleSortOrder',
|
||
|
|
TSA => 'AlbumSortOrder',
|
||
|
|
TSP => 'PerformerSortOrder',
|
||
|
|
TS2 => 'AlbumArtistSortOrder',
|
||
|
|
TSC => 'ComposerSortOrder',
|
||
|
|
ITU => { Name => 'iTunesU', Description => 'iTunes U', Binary => 1, Unknown => 1 },
|
||
|
|
PCS => { Name => 'Podcast', Binary => 1, Unknown => 1 },
|
||
|
|
);
|
||
|
|
|
||
|
|
# tags common to ID3v2.3 and ID3v2.4
|
||
|
|
my %id3v2_common = (
|
||
|
|
# AENC => 'AudioEncryption', # Owner, preview start, preview length, encr data
|
||
|
|
APIC => {
|
||
|
|
Name => 'Picture',
|
||
|
|
Groups => { 2 => 'Preview' },
|
||
|
|
Binary => 1,
|
||
|
|
Notes => 'the 3 tags below are also extracted from this APIC frame',
|
||
|
|
},
|
||
|
|
'APIC-1' => { Name => 'PictureMIMEType', Groups => { 2 => 'Image' } },
|
||
|
|
'APIC-2' => {
|
||
|
|
Name => 'PictureType',
|
||
|
|
Groups => { 2 => 'Image' },
|
||
|
|
PrintConv => \%pictureType,
|
||
|
|
SeparateTable => 1,
|
||
|
|
},
|
||
|
|
'APIC-3' => { Name => 'PictureDescription', Groups => { 2 => 'Image' } },
|
||
|
|
COMM => 'Comment',
|
||
|
|
# COMR => 'Commercial',
|
||
|
|
# ENCR => 'EncryptionMethod',
|
||
|
|
# ETCO => 'EventTimingCodes',
|
||
|
|
# GEOB => 'GeneralEncapsulatedObject',
|
||
|
|
# GRID => 'GroupIdentification',
|
||
|
|
# LINK => 'LinkedInformation',
|
||
|
|
MCDI => { Name => 'MusicCDIdentifier', Binary => 1 },
|
||
|
|
# MLLT => 'MPEGLocationLookupTable',
|
||
|
|
OWNE => 'Ownership',
|
||
|
|
PCNT => 'PlayCounter',
|
||
|
|
POPM => {
|
||
|
|
Name => 'Popularimeter',
|
||
|
|
PrintConv => '$val=~s/^(.*?) (\d+) (\d+)$/$1 Rating=$2 Count=$3/s; $val',
|
||
|
|
},
|
||
|
|
# POSS => 'PostSynchronization',
|
||
|
|
PRIV => {
|
||
|
|
Name => 'Private',
|
||
|
|
SubDirectory => { TagTable => 'Image::ExifTool::ID3::Private' },
|
||
|
|
},
|
||
|
|
# RBUF => 'RecommendedBufferSize',
|
||
|
|
# RVRB => 'Reverb',
|
||
|
|
SYLT => {
|
||
|
|
Name => 'SynLyrics',
|
||
|
|
SubDirectory => { TagTable => 'Image::ExifTool::ID3::SynLyrics' },
|
||
|
|
},
|
||
|
|
# SYTC => 'SynchronizedTempoCodes',
|
||
|
|
TALB => 'Album',
|
||
|
|
TBPM => 'BeatsPerMinute',
|
||
|
|
TCMP => { Name => 'Compilation', PrintConv => { 0 => 'No', 1 => 'Yes' } }, #PH (iTunes)
|
||
|
|
TCOM => 'Composer',
|
||
|
|
TCON =>{
|
||
|
|
Name => 'Genre',
|
||
|
|
Notes => 'uses same lookup table as ID3v1 Genre',
|
||
|
|
PrintConv => 'Image::ExifTool::ID3::PrintGenre($val)',
|
||
|
|
},
|
||
|
|
TCOP => { Name => 'Copyright', Groups => { 2 => 'Author' } },
|
||
|
|
TDLY => 'PlaylistDelay',
|
||
|
|
TENC => 'EncodedBy',
|
||
|
|
TEXT => 'Lyricist',
|
||
|
|
TFLT => 'FileType',
|
||
|
|
TIT1 => 'Grouping',
|
||
|
|
TIT2 => 'Title',
|
||
|
|
TIT3 => 'Subtitle',
|
||
|
|
TKEY => 'InitialKey',
|
||
|
|
TLAN => 'Language',
|
||
|
|
TLEN => {
|
||
|
|
Name => 'Length',
|
||
|
|
ValueConv => '$val / 1000',
|
||
|
|
PrintConv => '"$val s"',
|
||
|
|
},
|
||
|
|
TMED => 'Media',
|
||
|
|
TOAL => 'OriginalAlbum',
|
||
|
|
TOFN => 'OriginalFileName',
|
||
|
|
TOLY => 'OriginalLyricist',
|
||
|
|
TOPE => { Name => 'OriginalArtist', Groups => { 2 => 'Author' } },
|
||
|
|
TOWN => 'FileOwner',
|
||
|
|
TPE1 => { Name => 'Artist', Groups => { 2 => 'Author' } },
|
||
|
|
TPE2 => 'Band',
|
||
|
|
TPE3 => 'Conductor',
|
||
|
|
TPE4 => 'InterpretedBy',
|
||
|
|
TPOS => 'PartOfSet',
|
||
|
|
TPUB => 'Publisher',
|
||
|
|
TRCK => 'Track',
|
||
|
|
TRSN => 'InternetRadioStationName',
|
||
|
|
TRSO => 'InternetRadioStationOwner',
|
||
|
|
TSRC => 'ISRC', # (international standard recording code)
|
||
|
|
TSSE => 'EncoderSettings',
|
||
|
|
TXXX => 'UserDefinedText',
|
||
|
|
# UFID => 'UniqueFileID', (not extracted because it is long and nasty and not very useful)
|
||
|
|
USER => 'TermsOfUse',
|
||
|
|
USLT => 'Lyrics',
|
||
|
|
WCOM => 'CommercialURL',
|
||
|
|
WCOP => 'CopyrightURL',
|
||
|
|
WOAF => 'FileURL',
|
||
|
|
WOAR => { Name => 'ArtistURL', Groups => { 2 => 'Author' } },
|
||
|
|
WOAS => 'SourceURL',
|
||
|
|
WORS => 'InternetRadioStationURL',
|
||
|
|
WPAY => 'PaymentURL',
|
||
|
|
WPUB => 'PublisherURL',
|
||
|
|
WXXX => 'UserDefinedURL',
|
||
|
|
#
|
||
|
|
# non-standard frames
|
||
|
|
#
|
||
|
|
# the following are written by iTunes 10.5 (ref PH)
|
||
|
|
TSO2 => 'AlbumArtistSortOrder',
|
||
|
|
TSOC => 'ComposerSortOrder',
|
||
|
|
ITNU => { Name => 'iTunesU', Description => 'iTunes U', Binary => 1, Unknown => 1 },
|
||
|
|
PCST => { Name => 'Podcast', Binary => 1, Unknown => 1 },
|
||
|
|
# other proprietary Apple tags (ref http://help.mp3tag.de/main_tags.html)
|
||
|
|
TDES => 'PodcastDescription',
|
||
|
|
TGID => 'PodcastID',
|
||
|
|
WFED => 'PodcastURL',
|
||
|
|
TKWD => 'PodcastKeywords',
|
||
|
|
TCAT => 'PodcastCategory',
|
||
|
|
# more non-standard tags (ref http://eyed3.nicfit.net/compliance.html)
|
||
|
|
# NCON - unknown MusicMatch binary data
|
||
|
|
XDOR => { Name => 'OriginalReleaseTime',Groups => { 2 => 'Time' }, %dateTimeConv },
|
||
|
|
XSOA => 'AlbumSortOrder',
|
||
|
|
XSOP => 'PerformerSortOrder',
|
||
|
|
XSOT => 'TitleSortOrder',
|
||
|
|
XOLY => {
|
||
|
|
Name => 'OlympusDSS',
|
||
|
|
SubDirectory => { TagTable => 'Image::ExifTool::Olympus::DSS' },
|
||
|
|
},
|
||
|
|
);
|
||
|
|
|
||
|
|
# Tags for ID3v2.3 (http://www.id3.org/id3v2.3.0)
|
||
|
|
%Image::ExifTool::ID3::v2_3 = (
|
||
|
|
PROCESS_PROC => \&Image::ExifTool::ID3::ProcessID3v2,
|
||
|
|
GROUPS => { 1 => 'ID3v2_3', 2 => 'Audio' },
|
||
|
|
NOTES => q{
|
||
|
|
ID3 version 2.3 tags. Includes some non-standard tags written by other
|
||
|
|
software.
|
||
|
|
},
|
||
|
|
%id3v2_common, # include common tags
|
||
|
|
# EQUA => 'Equalization',
|
||
|
|
IPLS => 'InvolvedPeople',
|
||
|
|
# RVAD => 'RelativeVolumeAdjustment',
|
||
|
|
TDAT => { Name => 'Date', Groups => { 2 => 'Time' } },
|
||
|
|
TIME => { Name => 'Time', Groups => { 2 => 'Time' } },
|
||
|
|
TORY => 'OriginalReleaseYear',
|
||
|
|
TRDA => 'RecordingDates',
|
||
|
|
TSIZ => 'Size',
|
||
|
|
TYER => { Name => 'Year', Groups => { 2 => 'Time' } },
|
||
|
|
);
|
||
|
|
|
||
|
|
# Tags for ID3v2.4 (http://www.id3.org/id3v2.4.0-frames)
|
||
|
|
%Image::ExifTool::ID3::v2_4 = (
|
||
|
|
PROCESS_PROC => \&Image::ExifTool::ID3::ProcessID3v2,
|
||
|
|
GROUPS => { 1 => 'ID3v2_4', 2 => 'Audio' },
|
||
|
|
NOTES => q{
|
||
|
|
ID3 version 2.4 tags. Includes some non-standard tags written by other
|
||
|
|
software.
|
||
|
|
},
|
||
|
|
%id3v2_common, # include common tags
|
||
|
|
# EQU2 => 'Equalization',
|
||
|
|
RVA2 => 'RelativeVolumeAdjustment',
|
||
|
|
# SEEK => 'Seek',
|
||
|
|
# SIGN => 'Signature',
|
||
|
|
TDEN => { Name => 'EncodingTime', Groups => { 2 => 'Time' }, %dateTimeConv },
|
||
|
|
TDOR => { Name => 'OriginalReleaseTime',Groups => { 2 => 'Time' }, %dateTimeConv },
|
||
|
|
TDRC => { Name => 'RecordingTime', Groups => { 2 => 'Time' }, %dateTimeConv },
|
||
|
|
TDRL => { Name => 'ReleaseTime', Groups => { 2 => 'Time' }, %dateTimeConv },
|
||
|
|
TDTG => { Name => 'TaggingTime', Groups => { 2 => 'Time' }, %dateTimeConv },
|
||
|
|
TIPL => 'InvolvedPeople',
|
||
|
|
TMCL => 'MusicianCredits',
|
||
|
|
TMOO => 'Mood',
|
||
|
|
TPRO => 'ProducedNotice',
|
||
|
|
TSOA => 'AlbumSortOrder',
|
||
|
|
TSOP => 'PerformerSortOrder',
|
||
|
|
TSOT => 'TitleSortOrder',
|
||
|
|
TSST => 'SetSubtitle',
|
||
|
|
);
|
||
|
|
|
||
|
|
# Synchronized lyrics/text
|
||
|
|
%Image::ExifTool::ID3::SynLyrics = (
|
||
|
|
GROUPS => { 1 => 'ID3', 2 => 'Audio' },
|
||
|
|
VARS => { NO_ID => 1 },
|
||
|
|
PROCESS_PROC => \&ProcessSynText,
|
||
|
|
NOTES => 'The following tags are extracted from synchronized lyrics/text frames.',
|
||
|
|
desc => { Name => 'SynchronizedLyricsDescription' },
|
||
|
|
type => {
|
||
|
|
Name => 'SynchronizedLyricsType',
|
||
|
|
PrintConv => {
|
||
|
|
0 => 'Other',
|
||
|
|
1 => 'Lyrics',
|
||
|
|
2 => 'Text Transcription',
|
||
|
|
3 => 'Movement/part Name',
|
||
|
|
4 => 'Events',
|
||
|
|
5 => 'Chord',
|
||
|
|
6 => 'Trivia/"pop-up" Information',
|
||
|
|
7 => 'Web Page URL',
|
||
|
|
8 => 'Image URL',
|
||
|
|
},
|
||
|
|
},
|
||
|
|
text => {
|
||
|
|
Name => 'SynchronizedLyricsText',
|
||
|
|
List => 1,
|
||
|
|
Notes => q{
|
||
|
|
each list item has a leading time stamp in square brackets. Time stamps may
|
||
|
|
be in seconds with format [MM:SS.ss], or MPEG frames with format [FFFF],
|
||
|
|
depending on how this information was stored
|
||
|
|
},
|
||
|
|
PrintConv => \&ConvertTimeStamp,
|
||
|
|
},
|
||
|
|
);
|
||
|
|
|
||
|
|
# ID3 PRIV tags (ref PH)
|
||
|
|
%Image::ExifTool::ID3::Private = (
|
||
|
|
PROCESS_PROC => \&Image::ExifTool::ID3::ProcessPrivate,
|
||
|
|
GROUPS => { 1 => 'ID3', 2 => 'Audio' },
|
||
|
|
VARS => { NO_ID => 1 },
|
||
|
|
NOTES => q{
|
||
|
|
ID3 private (PRIV) tags. ExifTool will decode any private tags found, even
|
||
|
|
if they do not appear in this table.
|
||
|
|
},
|
||
|
|
XMP => {
|
||
|
|
SubDirectory => {
|
||
|
|
DirName => 'XMP',
|
||
|
|
TagTable => 'Image::ExifTool::XMP::Main',
|
||
|
|
},
|
||
|
|
},
|
||
|
|
PeakValue => {
|
||
|
|
ValueConv => 'length($val)==4 ? unpack("V",$val) : \$val',
|
||
|
|
},
|
||
|
|
AverageLevel => {
|
||
|
|
ValueConv => 'length($val)==4 ? unpack("V",$val) : \$val',
|
||
|
|
},
|
||
|
|
# Windows Media attributes ("/" in tag ID is converted to "_" by ProcessPrivate)
|
||
|
|
WM_WMContentID => {
|
||
|
|
Name => 'WM_ContentID',
|
||
|
|
ValueConv => 'require Image::ExifTool::ASF; Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
},
|
||
|
|
WM_WMCollectionID => {
|
||
|
|
Name => 'WM_CollectionID',
|
||
|
|
ValueConv => 'require Image::ExifTool::ASF; Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
},
|
||
|
|
WM_WMCollectionGroupID => {
|
||
|
|
Name => 'WM_CollectionGroupID',
|
||
|
|
ValueConv => 'require Image::ExifTool::ASF; Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
},
|
||
|
|
WM_MediaClassPrimaryID => {
|
||
|
|
ValueConv => 'require Image::ExifTool::ASF; Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
},
|
||
|
|
WM_MediaClassSecondaryID => {
|
||
|
|
ValueConv => 'require Image::ExifTool::ASF; Image::ExifTool::ASF::GetGUID($val)',
|
||
|
|
},
|
||
|
|
WM_Provider => {
|
||
|
|
ValueConv => '$self->Decode($val,"UCS2","II")', #PH (NC)
|
||
|
|
},
|
||
|
|
# there are lots more WM tags that could be decoded if I had samples or documentation - PH
|
||
|
|
# WM/AlbumArtist
|
||
|
|
# WM/AlbumTitle
|
||
|
|
# WM/Category
|
||
|
|
# WM/Composer
|
||
|
|
# WM/Conductor
|
||
|
|
# WM/ContentDistributor
|
||
|
|
# WM/ContentGroupDescription
|
||
|
|
# WM/EncodingTime
|
||
|
|
# WM/Genre
|
||
|
|
# WM/GenreID
|
||
|
|
# WM/InitialKey
|
||
|
|
# WM/Language
|
||
|
|
# WM/Lyrics
|
||
|
|
# WM/MCDI
|
||
|
|
# WM/MediaClassPrimaryID
|
||
|
|
# WM/MediaClassSecondaryID
|
||
|
|
# WM/Mood
|
||
|
|
# WM/ParentalRating
|
||
|
|
# WM/Period
|
||
|
|
# WM/ProtectionType
|
||
|
|
# WM/Provider
|
||
|
|
# WM/ProviderRating
|
||
|
|
# WM/ProviderStyle
|
||
|
|
# WM/Publisher
|
||
|
|
# WM/SubscriptionContentID
|
||
|
|
# WM/SubTitle
|
||
|
|
# WM/TrackNumber
|
||
|
|
# WM/UniqueFileIdentifier
|
||
|
|
# WM/WMCollectionGroupID
|
||
|
|
# WM/WMCollectionID
|
||
|
|
# WM/WMContentID
|
||
|
|
# WM/Writer
|
||
|
|
# WM/Year
|
||
|
|
);
|
||
|
|
|
||
|
|
# lookup to check for existence of tags in other ID3 versions
|
||
|
|
my %otherTable = (
|
||
|
|
\%Image::ExifTool::ID3::v2_4 => \%Image::ExifTool::ID3::v2_3,
|
||
|
|
\%Image::ExifTool::ID3::v2_3 => \%Image::ExifTool::ID3::v2_4,
|
||
|
|
);
|
||
|
|
|
||
|
|
# ID3 Composite tags
|
||
|
|
%Image::ExifTool::ID3::Composite = (
|
||
|
|
GROUPS => { 2 => 'Image' },
|
||
|
|
DateTimeOriginal => {
|
||
|
|
Description => 'Date/Time Original',
|
||
|
|
Groups => { 2 => 'Time' },
|
||
|
|
Priority => 0,
|
||
|
|
Desire => {
|
||
|
|
0 => 'ID3:RecordingTime',
|
||
|
|
1 => 'ID3:Year',
|
||
|
|
2 => 'ID3:Date',
|
||
|
|
3 => 'ID3:Time',
|
||
|
|
},
|
||
|
|
ValueConv => q{
|
||
|
|
return $val[0] if $val[0];
|
||
|
|
return undef unless $val[1];
|
||
|
|
return $val[1] unless $val[2] and $val[2] =~ /^(\d{2})(\d{2})$/;
|
||
|
|
$val[1] .= ":$1:$2";
|
||
|
|
return $val[1] unless $val[3] and $val[3] =~ /^(\d{2})(\d{2})$/;
|
||
|
|
return "$val[1] $1:$2";
|
||
|
|
},
|
||
|
|
PrintConv => '$self->ConvertDateTime($val)',
|
||
|
|
},
|
||
|
|
);
|
||
|
|
|
||
|
|
# add our composite tags
|
||
|
|
Image::ExifTool::AddCompositeTags('Image::ExifTool::ID3');
|
||
|
|
|
||
|
|
# can't share tagInfo hashes between two tables, so we must make
|
||
|
|
# copies of the necessary hashes
|
||
|
|
{
|
||
|
|
my $tag;
|
||
|
|
foreach $tag (keys %id3v2_common) {
|
||
|
|
next unless ref $id3v2_common{$tag} eq 'HASH';
|
||
|
|
my %tagInfo = %{$id3v2_common{$tag}};
|
||
|
|
# must also copy Groups hash if it exists
|
||
|
|
my $groups = $tagInfo{Groups};
|
||
|
|
$tagInfo{Groups} = { %$groups } if $groups;
|
||
|
|
$Image::ExifTool::ID3::v2_4{$tag} = \%tagInfo;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Convert ID3v1 text to exiftool character set
|
||
|
|
# Inputs: 0) ExifTool object ref, 1) text string
|
||
|
|
# Returns: converted text
|
||
|
|
sub ConvertID3v1Text($$)
|
||
|
|
{
|
||
|
|
my ($et, $val) = @_;
|
||
|
|
return $et->Decode($val, $et->Options('CharsetID3'));
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Re-format time stamp in synchronized lyrics
|
||
|
|
# Inputs: 0) synchronized lyrics entry (eg. "[84.030]Da do do do")
|
||
|
|
# Returns: entry with formatted timestamp (eg. "[01:24.03]Da do do do")
|
||
|
|
sub ConvertTimeStamp($)
|
||
|
|
{
|
||
|
|
my $val = shift;
|
||
|
|
# do nothing if this isn't a time stamp (frame count doesn't contain a decimal)
|
||
|
|
return $val unless $val =~ /^\[(\d+\.\d+)\]/g;
|
||
|
|
my $time = $1;
|
||
|
|
# print hours only if more than 60 minutes
|
||
|
|
my $h = int($time / 3600);
|
||
|
|
if ($h) {
|
||
|
|
$time -= $h * 3600;
|
||
|
|
$h = "$h:";
|
||
|
|
} else {
|
||
|
|
$h = '';
|
||
|
|
}
|
||
|
|
my $m = int($time / 60);
|
||
|
|
my $s = $time - $m * 60;
|
||
|
|
my $ss = sprintf('%05.2f', $s);
|
||
|
|
if ($ss >= 60) {
|
||
|
|
$ss = '00.00';
|
||
|
|
++$m >= 60 and $m -= 60, ++$h;
|
||
|
|
}
|
||
|
|
return sprintf('[%s%.2d:%s]', $h, $m, $ss) . substr($val, pos($val));
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process ID3 synchronized lyrics/text
|
||
|
|
# Inputs: 0) ExifTool object ref, 1) dirInfo ref, 2) tag table ref
|
||
|
|
sub ProcessSynText($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
|
||
|
|
$et->VerboseDir('SynLyrics', 0, length $$dataPt);
|
||
|
|
return unless length $$dataPt > 6;
|
||
|
|
|
||
|
|
my ($enc,$lang,$timeCode,$type) = unpack('Ca3CC', $$dataPt);
|
||
|
|
$lang = lc $lang;
|
||
|
|
undef $lang if $lang !~ /^[a-z]{3}$/ or $lang eq 'eng';
|
||
|
|
pos($$dataPt) = 6;
|
||
|
|
my ($termLen, $pat);
|
||
|
|
if ($enc == 1 or $enc == 2) {
|
||
|
|
$$dataPt =~ /\G(..)*?\0\0/sg or return;
|
||
|
|
$termLen = 2;
|
||
|
|
$pat = '\G(?:..)*?\0\0(....)';
|
||
|
|
} else {
|
||
|
|
$$dataPt =~ /\0/g or return;
|
||
|
|
$termLen = 1;
|
||
|
|
$pat = '\0(....)';
|
||
|
|
}
|
||
|
|
my $desc = substr($$dataPt, 6, pos($$dataPt) - 6 - $termLen);
|
||
|
|
$desc = DecodeString($et, $desc, $enc);
|
||
|
|
|
||
|
|
my $tagInfo = $et->GetTagInfo($tagTablePtr, 'desc');
|
||
|
|
$tagInfo = Image::ExifTool::GetLangInfo($tagInfo, $lang) if $lang;
|
||
|
|
$et->HandleTag($tagTablePtr, 'type', $type);
|
||
|
|
$et->HandleTag($tagTablePtr, 'desc', $desc, TagInfo => $tagInfo);
|
||
|
|
$tagInfo = $et->GetTagInfo($tagTablePtr, 'text');
|
||
|
|
$tagInfo = Image::ExifTool::GetLangInfo($tagInfo, $lang) if $lang;
|
||
|
|
|
||
|
|
for (;;) {
|
||
|
|
my $pos = pos $$dataPt;
|
||
|
|
last unless $$dataPt =~ /$pat/sg;
|
||
|
|
my $time = unpack('N', $1);
|
||
|
|
my $text = substr($$dataPt, $pos, pos($$dataPt) - $pos - 4 - $termLen);
|
||
|
|
$text = DecodeString($et, $text, $enc);
|
||
|
|
my $timeStr;
|
||
|
|
if ($timeCode == 2) { # time in ms
|
||
|
|
$timeStr = sprintf('%.3f', $time / 1000);
|
||
|
|
} else { # time in MPEG frames
|
||
|
|
$timeStr = sprintf('%.4d', $time);
|
||
|
|
$timeStr .= '?' if $timeCode != 1;
|
||
|
|
}
|
||
|
|
$et->HandleTag($tagTablePtr, 'text', "[$timeStr]$text", TagInfo => $tagInfo);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process ID3 PRIV data
|
||
|
|
# Inputs: 0) ExifTool object ref, 1) dirInfo ref, 2) tag table ref
|
||
|
|
sub ProcessPrivate($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my ($tag, $start);
|
||
|
|
$et->VerboseDir('PRIV', 0, length $$dataPt);
|
||
|
|
if ($$dataPt =~ /^(.*?)\0/s) {
|
||
|
|
$tag = $1;
|
||
|
|
$start = length($tag) + 1;
|
||
|
|
} else {
|
||
|
|
$tag = '';
|
||
|
|
$start = 0;
|
||
|
|
}
|
||
|
|
unless ($$tagTablePtr{$tag}) {
|
||
|
|
$tag =~ tr{/ }{_}d; # translate '/' to '_' and remove spaces
|
||
|
|
$tag = 'private' unless $tag =~ /^[-\w]{1,24}$/;
|
||
|
|
unless ($$tagTablePtr{$tag}) {
|
||
|
|
AddTagToTable($tagTablePtr, $tag,
|
||
|
|
{ Name => ucfirst($tag), Binary => 1 });
|
||
|
|
}
|
||
|
|
}
|
||
|
|
my $key = $et->HandleTag($tagTablePtr, $tag, undef,
|
||
|
|
Size => length($$dataPt) - $start,
|
||
|
|
Start => $start,
|
||
|
|
DataPt => $dataPt,
|
||
|
|
);
|
||
|
|
# set group1 name
|
||
|
|
$et->SetGroup($key, $$et{ID3_Ver}) if $key;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Print ID3v2 Genre
|
||
|
|
# Inputs: TCON or TCO frame data
|
||
|
|
# Returns: Content type with decoded genre numbers
|
||
|
|
sub PrintGenre($)
|
||
|
|
{
|
||
|
|
my $val = shift;
|
||
|
|
# make sure that %genre has an entry for all numbers we are interested in
|
||
|
|
# (genre numbers are in brackets for ID3v2.2 and v2.3)
|
||
|
|
while ($val =~ /\((\d+)\)/g) {
|
||
|
|
$genre{$1} or $genre{$1} = "Unknown ($1)";
|
||
|
|
}
|
||
|
|
# (genre numbers are separated by nulls in ID3v2.4,
|
||
|
|
# but nulls are converted to '/' by DecodeString())
|
||
|
|
while ($val =~ /(?:^|\/)(\d+)(\/|$)/g) {
|
||
|
|
$genre{$1} or $genre{$1} = "Unknown ($1)";
|
||
|
|
}
|
||
|
|
$val =~ s/\((\d+)\)/\($genre{$1}\)/g;
|
||
|
|
$val =~ s/(^|\/)(\d+)(?=\/|$)/$1$genre{$2}$3/g;
|
||
|
|
$val =~ s/^\(([^)]+)\)\1?$/$1/; # clean up by removing brackets and duplicates
|
||
|
|
return $val;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Decode ID3 string
|
||
|
|
# Inputs: 0) ExifTool object reference
|
||
|
|
# 1) string beginning with encoding byte unless specified as argument
|
||
|
|
# 2) optional encoding (0=ISO-8859-1, 1=UTF-16 BOM, 2=UTF-16BE, 3=UTF-8)
|
||
|
|
# Returns: Decoded string in scalar context, or list of strings in list context
|
||
|
|
sub DecodeString($$;$)
|
||
|
|
{
|
||
|
|
my ($et, $val, $enc) = @_;
|
||
|
|
return '' unless length $val;
|
||
|
|
unless (defined $enc) {
|
||
|
|
$enc = unpack('C', $val);
|
||
|
|
$val = substr($val, 1); # remove encoding byte
|
||
|
|
}
|
||
|
|
my @vals;
|
||
|
|
if ($enc == 0 or $enc == 3) { # ISO 8859-1 or UTF-8
|
||
|
|
$val =~ s/\0+$//; # remove any null padding
|
||
|
|
# (must split before converting because conversion routines truncate at null)
|
||
|
|
@vals = split "\0", $val;
|
||
|
|
foreach $val (@vals) {
|
||
|
|
$val = $et->Decode($val, $enc ? 'UTF8' : 'Latin');
|
||
|
|
}
|
||
|
|
} elsif ($enc == 1 or $enc == 2) { # UTF-16 with BOM, or UTF-16BE
|
||
|
|
my $bom = "\xfe\xff";
|
||
|
|
my %order = ( "\xfe\xff" => 'MM', "\xff\xfe", => 'II' );
|
||
|
|
for (;;) {
|
||
|
|
my $v;
|
||
|
|
# split string at null terminators on word boundaries
|
||
|
|
if ($val =~ s/((..)*?)\0\0//s) {
|
||
|
|
$v = $1;
|
||
|
|
} else {
|
||
|
|
last unless length $val > 1;
|
||
|
|
$v = $val;
|
||
|
|
$val = '';
|
||
|
|
}
|
||
|
|
$bom = $1 if $v =~ s/^(\xfe\xff|\xff\xfe)//;
|
||
|
|
push @vals, $et->Decode($v, 'UCS2', $order{$bom});
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$val =~ s/\0+$//;
|
||
|
|
return "<Unknown encoding $enc> $val";
|
||
|
|
}
|
||
|
|
return @vals if wantarray;
|
||
|
|
return join('/',@vals);
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Convert sync-safe integer to a number we can use
|
||
|
|
# Inputs: 0) int32u sync-safe value
|
||
|
|
# Returns: actual number or undef on invalid value
|
||
|
|
sub UnSyncSafe($)
|
||
|
|
{
|
||
|
|
my $val = shift;
|
||
|
|
return undef if $val & 0x80808080;
|
||
|
|
return ($val & 0x0000007f) |
|
||
|
|
(($val & 0x00007f00) >> 1) |
|
||
|
|
(($val & 0x007f0000) >> 2) |
|
||
|
|
(($val & 0x7f000000) >> 3);
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Process ID3v2 information
|
||
|
|
# Inputs: 0) ExifTool object ref, 1) dirInfo ref, 2) tag table ref
|
||
|
|
sub ProcessID3v2($$$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo, $tagTablePtr) = @_;
|
||
|
|
my $dataPt = $$dirInfo{DataPt};
|
||
|
|
my $offset = $$dirInfo{DirStart};
|
||
|
|
my $size = $$dirInfo{DirLen};
|
||
|
|
my $vers = $$dirInfo{Version};
|
||
|
|
my $verbose = $et->Options('Verbose');
|
||
|
|
my $len; # frame data length
|
||
|
|
|
||
|
|
$et->VerboseDir($tagTablePtr->{GROUPS}->{1}, 0, $size);
|
||
|
|
$et->VerboseDump($dataPt, Len => $size, Start => $offset);
|
||
|
|
|
||
|
|
for (;;$offset+=$len) {
|
||
|
|
my ($id, $flags, $hi);
|
||
|
|
if ($vers < 0x0300) {
|
||
|
|
# version 2.2 frame header is 6 bytes
|
||
|
|
last if $offset + 6 > $size;
|
||
|
|
($id, $hi, $len) = unpack("x${offset}a3Cn",$$dataPt);
|
||
|
|
last if $id eq "\0\0\0";
|
||
|
|
$len += $hi << 16;
|
||
|
|
$offset += 6;
|
||
|
|
} else {
|
||
|
|
# version 2.3/2.4 frame header is 10 bytes
|
||
|
|
last if $offset + 10 > $size;
|
||
|
|
($id, $len, $flags) = unpack("x${offset}a4Nn",$$dataPt);
|
||
|
|
last if $id eq "\0\0\0\0";
|
||
|
|
$offset += 10;
|
||
|
|
# length is a "sync-safe" integer by the ID3v2.4 specification, but
|
||
|
|
# reportedly some versions of iTunes write this as a normal integer
|
||
|
|
# (ref http://www.id3.org/iTunes)
|
||
|
|
while ($vers >= 0x0400 and $len > 0x7f and not $len & 0x80808080) {
|
||
|
|
my $oldLen = $len;
|
||
|
|
$len = UnSyncSafe($len);
|
||
|
|
if (not defined $len or $offset + $len + 10 > $size) {
|
||
|
|
$et->Warn('Invalid ID3 frame size');
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
# check next ID to see if it makes sense
|
||
|
|
my $nextID = substr($$dataPt, $offset + $len, 4);
|
||
|
|
last if $$tagTablePtr{$nextID};
|
||
|
|
# try again with the incorrect length word (patch for iTunes bug)
|
||
|
|
last if $offset + $oldLen + 10 > $size;
|
||
|
|
$nextID = substr($$dataPt, $offset + $len, 4);
|
||
|
|
$len = $oldLen if $$tagTablePtr{$nextID};
|
||
|
|
last; # yes, "while" was really a "goto" in disguise
|
||
|
|
}
|
||
|
|
}
|
||
|
|
last if $offset + $len > $size;
|
||
|
|
my $tagInfo = $et->GetTagInfo($tagTablePtr, $id);
|
||
|
|
unless ($tagInfo) {
|
||
|
|
my $otherTable = $otherTable{$tagTablePtr};
|
||
|
|
$tagInfo = $et->GetTagInfo($otherTable, $id) if $otherTable;
|
||
|
|
if ($tagInfo) {
|
||
|
|
$et->WarnOnce("Frame '${id}' is not valid for this ID3 version", 1);
|
||
|
|
} else {
|
||
|
|
next unless $verbose or $et->Options('Unknown');
|
||
|
|
$id =~ tr/-A-Za-z0-9_//dc;
|
||
|
|
$id = 'unknown' unless length $id;
|
||
|
|
unless ($$tagTablePtr{$id}) {
|
||
|
|
$tagInfo = { Name => "ID3_$id", Binary => 1 };
|
||
|
|
AddTagToTable($tagTablePtr, $id, $tagInfo);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
# decode v2.3 and v2.4 flags
|
||
|
|
my (%flags, %extra);
|
||
|
|
if ($flags) {
|
||
|
|
if ($vers < 0x0400) {
|
||
|
|
# version 2.3 flags
|
||
|
|
$flags & 0x80 and $flags{Compress} = 1;
|
||
|
|
$flags & 0x40 and $flags{Encrypt} = 1;
|
||
|
|
$flags & 0x20 and $flags{GroupID} = 1;
|
||
|
|
} else {
|
||
|
|
# version 2.4 flags
|
||
|
|
$flags & 0x40 and $flags{GroupID} = 1;
|
||
|
|
$flags & 0x08 and $flags{Compress} = 1;
|
||
|
|
$flags & 0x04 and $flags{Encrypt} = 1;
|
||
|
|
$flags & 0x02 and $flags{Unsync} = 1;
|
||
|
|
$flags & 0x01 and $flags{DataLen} = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($flags{Encrypt}) {
|
||
|
|
$et->WarnOnce('Encrypted frames currently not supported');
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
# extract the value
|
||
|
|
my $val = substr($$dataPt, $offset, $len);
|
||
|
|
|
||
|
|
# reverse the unsynchronization
|
||
|
|
$val =~ s/\xff\x00/\xff/g if $flags{Unsync};
|
||
|
|
|
||
|
|
# read grouping identity
|
||
|
|
if ($flags{GroupID}) {
|
||
|
|
length($val) >= 1 or $et->Warn("Short $id frame"), next;
|
||
|
|
$val = substr($val, 1); # (ignore it)
|
||
|
|
}
|
||
|
|
# read data length
|
||
|
|
my $dataLen;
|
||
|
|
if ($flags{DataLen} or $flags{Compress}) {
|
||
|
|
length($val) >= 4 or $et->Warn("Short $id frame"), next;
|
||
|
|
$dataLen = unpack('N', $val); # save the data length word
|
||
|
|
$val = substr($val, 4);
|
||
|
|
}
|
||
|
|
# uncompress data
|
||
|
|
if ($flags{Compress}) {
|
||
|
|
if (eval { require Compress::Zlib }) {
|
||
|
|
my $inflate = Compress::Zlib::inflateInit();
|
||
|
|
my ($buff, $stat);
|
||
|
|
$inflate and ($buff, $stat) = $inflate->inflate($val);
|
||
|
|
if ($inflate and $stat == Compress::Zlib::Z_STREAM_END()) {
|
||
|
|
$val = $buff;
|
||
|
|
} else {
|
||
|
|
$et->Warn("Error inflating $id frame");
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
$et->WarnOnce('Install Compress::Zlib to decode compressed frames');
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
# validate data length
|
||
|
|
if (defined $dataLen) {
|
||
|
|
$dataLen = UnSyncSafe($dataLen);
|
||
|
|
defined $dataLen or $et->Warn("Invalid length for $id frame"), next;
|
||
|
|
$dataLen == length($val) or $et->Warn("Wrong length for $id frame"), next;
|
||
|
|
}
|
||
|
|
unless ($tagInfo) {
|
||
|
|
next unless $verbose;
|
||
|
|
%flags and $extra{Extra} = ', Flags=' . join(',', sort keys %flags);
|
||
|
|
$et->VerboseInfo($id, $tagInfo,
|
||
|
|
Table => $tagTablePtr,
|
||
|
|
Value => $val,
|
||
|
|
DataPt => $dataPt,
|
||
|
|
DataPos => $$dirInfo{DataPos},
|
||
|
|
Size => $len,
|
||
|
|
Start => $offset,
|
||
|
|
%extra
|
||
|
|
);
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
#
|
||
|
|
# decode data in this frame (it is bad form to hard-code these, but the ID3 frame formats
|
||
|
|
# are so variable that it would be more work to define format types for each of them)
|
||
|
|
#
|
||
|
|
my $lang;
|
||
|
|
my $valLen = length($val); # actual value length (after decompression, etc)
|
||
|
|
if ($id =~ /^(TXX|TXXX)$/) {
|
||
|
|
# two encoded strings separated by a null
|
||
|
|
my @vals = DecodeString($et, $val);
|
||
|
|
foreach (0..1) { $vals[$_] = '' unless defined $vals[$_]; }
|
||
|
|
($val = "($vals[0]) $vals[1]") =~ s/^\(\) //;
|
||
|
|
} elsif ($id =~ /^T/ or $id =~ /^(IPL|IPLS)$/) {
|
||
|
|
$val = DecodeString($et, $val);
|
||
|
|
} elsif ($id =~ /^(WXX|WXXX)$/) {
|
||
|
|
# one encoded string and one Latin string separated by a null
|
||
|
|
my $enc = unpack('C', $val);
|
||
|
|
my $url;
|
||
|
|
if ($enc == 1 or $enc == 2) {
|
||
|
|
($val, $url) = ($val =~ /^(.(?:..)*?)\0\0(.*)/s);
|
||
|
|
} else {
|
||
|
|
($val, $url) = ($val =~ /^(..*?)\0(.*)/s);
|
||
|
|
}
|
||
|
|
unless (defined $val and defined $url) {
|
||
|
|
$et->Warn("Invalid $id frame value");
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
$val = DecodeString($et, $val);
|
||
|
|
$url =~ s/\0.*//s;
|
||
|
|
$val = length($val) ? "($val) $url" : $url;
|
||
|
|
} elsif ($id =~ /^W/) {
|
||
|
|
$val =~ s/\0.*//s; # truncate at null
|
||
|
|
} elsif ($id =~ /^(COM|COMM|ULT|USLT)$/) {
|
||
|
|
$valLen > 4 or $et->Warn("Short $id frame"), next;
|
||
|
|
$lang = substr($val,1,3);
|
||
|
|
my @vals = DecodeString($et, substr($val,4), Get8u(\$val,0));
|
||
|
|
foreach (0..1) { $vals[$_] = '' unless defined $vals[$_]; }
|
||
|
|
$val = length($vals[0]) ? "($vals[0]) $vals[1]" : $vals[1];
|
||
|
|
} elsif ($id eq 'USER') {
|
||
|
|
$valLen > 4 or $et->Warn("Short $id frame"), next;
|
||
|
|
$lang = substr($val,1,3);
|
||
|
|
$val = DecodeString($et, substr($val,4), Get8u(\$val,0));
|
||
|
|
} elsif ($id =~ /^(CNT|PCNT)$/) {
|
||
|
|
$valLen >= 4 or $et->Warn("Short $id frame"), next;
|
||
|
|
my ($cnt, @xtra) = unpack('NC*', $val);
|
||
|
|
$cnt = ($cnt << 8) + $_ foreach @xtra;
|
||
|
|
$val = $cnt;
|
||
|
|
} elsif ($id =~ /^(PIC|APIC)$/) {
|
||
|
|
$valLen >= 4 or $et->Warn("Short $id frame"), next;
|
||
|
|
my ($hdr, $attr);
|
||
|
|
my $enc = unpack('C', $val);
|
||
|
|
if ($enc == 1 or $enc == 2) {
|
||
|
|
$hdr = ($id eq 'PIC') ? ".(...)(.)((?:..)*?)\0\0" : ".(.*?)\0(.)((?:..)*?)\0\0";
|
||
|
|
} else {
|
||
|
|
$hdr = ($id eq 'PIC') ? ".(...)(.)(.*?)\0" : ".(.*?)\0(.)(.*?)\0";
|
||
|
|
}
|
||
|
|
# remove header (encoding, image format or MIME type, picture type, description)
|
||
|
|
$val =~ s/^$hdr//s or $et->Warn("Invalid $id frame"), next;
|
||
|
|
my @attrs = ($1, ord($2), DecodeString($et, $3, $enc));
|
||
|
|
my $i = 1;
|
||
|
|
foreach $attr (@attrs) {
|
||
|
|
# must store descriptions even if they are empty to maintain
|
||
|
|
# sync between copy numbers when multiple images
|
||
|
|
$et->HandleTag($tagTablePtr, "$id-$i", $attr);
|
||
|
|
++$i;
|
||
|
|
}
|
||
|
|
} elsif ($id eq 'POP' or $id eq 'POPM') {
|
||
|
|
# _email, 00, rating(1), counter(4-N)
|
||
|
|
my ($email, $dat) = ($val =~ /^([^\0]*)\0(.*)$/s);
|
||
|
|
unless (defined $dat and length($dat)) {
|
||
|
|
$et->Warn("Invalid $id frame");
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
my ($rating, @xtra) = unpack('C*', $dat);
|
||
|
|
my $cnt = 0;
|
||
|
|
$cnt = ($cnt << 8) + $_ foreach @xtra;
|
||
|
|
$val = "$email $rating $cnt";
|
||
|
|
} elsif ($id eq 'OWNE') {
|
||
|
|
# enc(1), _price, 00, _date(8), Seller
|
||
|
|
my @strs = DecodeString($et, $val);
|
||
|
|
$strs[1] =~ s/^(\d{4})(\d{2})(\d{2})/$1:$2:$3 /s if $strs[1]; # format date
|
||
|
|
$val = "@strs";
|
||
|
|
} elsif ($id eq 'RVA' or $id eq 'RVAD') {
|
||
|
|
my @dat = unpack('C*', $val);
|
||
|
|
my $flag = shift @dat;
|
||
|
|
my $bits = shift @dat or $et->Warn("Short $id frame"), next;
|
||
|
|
my $bytes = int(($bits + 7) / 8);
|
||
|
|
my @parse = (['Right',0,2,0x01],['Left',1,3,0x02],['Back-right',4,6,0x04],
|
||
|
|
['Back-left',5,7,0x08],['Center',8,9,0x10],['Bass',10,11,0x20]);
|
||
|
|
$val = '';
|
||
|
|
while (@parse) {
|
||
|
|
my $elem = shift @parse;
|
||
|
|
my $j = $$elem[2] * $bytes;
|
||
|
|
last if scalar(@dat) < $j + $bytes;
|
||
|
|
my $i = $$elem[1] * $bytes;
|
||
|
|
$val .= ', ' if $val;
|
||
|
|
my ($rel, $pk, $b);
|
||
|
|
for ($rel=0, $pk=0, $b=0; $b<$bytes; ++$b) {
|
||
|
|
$rel = $rel * 256 + $dat[$i + $b];
|
||
|
|
$pk = $pk * 256 + $dat[$j + $b]; # (peak - not used in printout)
|
||
|
|
}
|
||
|
|
$rel =-$rel unless $flag & $$elem[3];
|
||
|
|
$val .= sprintf("%+.1f%% %s", 100 * $rel / ((1<<$bits)-1), $$elem[0]);
|
||
|
|
}
|
||
|
|
} elsif ($id eq 'RVA2') {
|
||
|
|
my ($pos, $id) = $val=~/^([^\0]*)\0/s ? (length($1)+1, $1) : (1, '');
|
||
|
|
my @vals;
|
||
|
|
while ($pos + 4 <= $valLen) {
|
||
|
|
my $type = Get8u(\$val, $pos);
|
||
|
|
my $str = ({
|
||
|
|
0 => 'Other',
|
||
|
|
1 => 'Master',
|
||
|
|
2 => 'Front-right',
|
||
|
|
3 => 'Front-left',
|
||
|
|
4 => 'Back-right',
|
||
|
|
5 => 'Back-left',
|
||
|
|
6 => 'Front-centre',
|
||
|
|
7 => 'Back-centre',
|
||
|
|
8 => 'Subwoofer',
|
||
|
|
}->{$type} || "Unknown($type)");
|
||
|
|
my $db = Get16s(\$val,$pos+1) / 512;
|
||
|
|
# convert dB to percent as displayed by iTunes 10.5
|
||
|
|
# (not sure why I need to divide by 20 instead of 10 as expected - PH)
|
||
|
|
push @vals, sprintf('%+.1f%% %s', 10**($db/20+2)-100, $str);
|
||
|
|
# step to next channel (ignoring peak volume)
|
||
|
|
$pos += 4 + int((Get8u(\$val,$pos+3) + 7) / 8);
|
||
|
|
}
|
||
|
|
$val = join ', ', @vals;
|
||
|
|
$val .= " ($id)" if $id;
|
||
|
|
} elsif ($id eq 'PRIV') {
|
||
|
|
# save version number to set group1 name for tag later
|
||
|
|
$$et{ID3_Ver} = $$tagTablePtr{GROUPS}{1};
|
||
|
|
$et->HandleTag($tagTablePtr, $id, $val);
|
||
|
|
next;
|
||
|
|
} elsif ($$tagInfo{Format} or $$tagInfo{SubDirectory}) {
|
||
|
|
$et->HandleTag($tagTablePtr, $id, undef, DataPt => \$val);
|
||
|
|
next;
|
||
|
|
} elsif (not $$tagInfo{Binary}) {
|
||
|
|
$et->Warn("Don't know how to handle $id frame");
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
if ($lang and $lang =~ /^[a-z]{3}$/i and $lang ne 'eng') {
|
||
|
|
$tagInfo = Image::ExifTool::GetLangInfo($tagInfo, lc $lang);
|
||
|
|
}
|
||
|
|
%flags and $extra{Extra} = ', Flags=' . join(',', sort keys %flags);
|
||
|
|
$et->HandleTag($tagTablePtr, $id, $val,
|
||
|
|
TagInfo => $tagInfo,
|
||
|
|
DataPt => $dataPt,
|
||
|
|
DataPos => $$dirInfo{DataPos},
|
||
|
|
Size => $len,
|
||
|
|
Start => $offset,
|
||
|
|
%extra
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Extract ID3 information from an audio file
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo reference
|
||
|
|
# Returns: 1 on success, 0 if this file didn't contain ID3 information
|
||
|
|
# - also processes audio data if any ID3 information was found
|
||
|
|
# - sets ExifTool DoneID3 to 1 when called, or to 2 if an ID3v1 trailer exists
|
||
|
|
sub ProcessID3($$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo) = @_;
|
||
|
|
|
||
|
|
return 0 if $$et{DoneID3}; # avoid infinite recursion
|
||
|
|
$$et{DoneID3} = 1;
|
||
|
|
|
||
|
|
# allow this to be called with either RAF or DataPt
|
||
|
|
my $raf = $$dirInfo{RAF} || new File::RandomAccess($$dirInfo{DataPt});
|
||
|
|
my ($buff, %id3Header, %id3Trailer, $hBuff, $tBuff, $eBuff, $tagTablePtr);
|
||
|
|
my $rtnVal = 0;
|
||
|
|
my $hdrEnd = 0;
|
||
|
|
my $id3Len = 0;
|
||
|
|
|
||
|
|
# read first 3 bytes of file
|
||
|
|
$raf->Seek(0, 0);
|
||
|
|
return 0 unless $raf->Read($buff, 3) == 3;
|
||
|
|
#
|
||
|
|
# identify ID3v2 header
|
||
|
|
#
|
||
|
|
while ($buff =~ /^ID3/) {
|
||
|
|
$rtnVal = 1;
|
||
|
|
$raf->Read($hBuff, 7) == 7 or $et->Warn('Short ID3 header'), last;
|
||
|
|
my ($vers, $flags, $size) = unpack('nCN', $hBuff);
|
||
|
|
$size = UnSyncSafe($size);
|
||
|
|
defined $size or $et->Warn('Invalid ID3 header'), last;
|
||
|
|
my $verStr = sprintf("2.%d.%d", $vers >> 8, $vers & 0xff);
|
||
|
|
if ($vers >= 0x0500) {
|
||
|
|
$et->Warn("Unsupported ID3 version: $verStr");
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
unless ($raf->Read($hBuff, $size) == $size) {
|
||
|
|
$et->Warn('Truncated ID3 data');
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
# this flag only indicates use of unsynchronized frames in ID3v2.4
|
||
|
|
if ($flags & 0x80 and $vers < 0x0400) {
|
||
|
|
# reverse the unsynchronization
|
||
|
|
$hBuff =~ s/\xff\x00/\xff/g;
|
||
|
|
}
|
||
|
|
my $pos = 10;
|
||
|
|
if ($flags & 0x40) {
|
||
|
|
# skip the extended header
|
||
|
|
$size >= 4 or $et->Warn('Bad ID3 extended header'), last;
|
||
|
|
my $len = unpack('N', $hBuff);
|
||
|
|
if ($len > length($hBuff) - 4) {
|
||
|
|
$et->Warn('Truncated ID3 extended header');
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
$hBuff = substr($hBuff, $len + 4);
|
||
|
|
$pos += $len + 4;
|
||
|
|
}
|
||
|
|
if ($flags & 0x10) {
|
||
|
|
# ignore v2.4 footer (10 bytes long)
|
||
|
|
$raf->Seek(10, 1);
|
||
|
|
}
|
||
|
|
%id3Header = (
|
||
|
|
DataPt => \$hBuff,
|
||
|
|
DataPos => $pos,
|
||
|
|
DirStart => 0,
|
||
|
|
DirLen => length($hBuff),
|
||
|
|
Version => $vers,
|
||
|
|
DirName => "ID3v$verStr",
|
||
|
|
);
|
||
|
|
$id3Len += length($hBuff) + 10;
|
||
|
|
if ($vers >= 0x0400) {
|
||
|
|
$tagTablePtr = GetTagTable('Image::ExifTool::ID3::v2_4');
|
||
|
|
} elsif ($vers >= 0x0300) {
|
||
|
|
$tagTablePtr = GetTagTable('Image::ExifTool::ID3::v2_3');
|
||
|
|
} else {
|
||
|
|
$tagTablePtr = GetTagTable('Image::ExifTool::ID3::v2_2');
|
||
|
|
}
|
||
|
|
$hdrEnd = $raf->Tell();
|
||
|
|
last;
|
||
|
|
}
|
||
|
|
#
|
||
|
|
# read ID3v1 trailer if it exists
|
||
|
|
#
|
||
|
|
if ($raf->Seek(-128, 2) and $raf->Read($tBuff, 128) == 128 and $tBuff =~ /^TAG/) {
|
||
|
|
$$et{DoneID3} = 2; # set to 2 as flag that trailer exists
|
||
|
|
%id3Trailer = (
|
||
|
|
DataPt => \$tBuff,
|
||
|
|
DataPos => $raf->Tell() - 128,
|
||
|
|
DirStart => 0,
|
||
|
|
DirLen => length($tBuff),
|
||
|
|
);
|
||
|
|
$id3Len += length($tBuff);
|
||
|
|
$rtnVal = 1;
|
||
|
|
# load 'Enhanced TAG' information if available
|
||
|
|
if ($raf->Seek(-355, 2) and $raf->Read($eBuff, 227) == 227 and $eBuff =~ /^TAG+/) {
|
||
|
|
$id3Trailer{EnhancedTAG} = \$eBuff;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#
|
||
|
|
# process the the information
|
||
|
|
#
|
||
|
|
if ($rtnVal) {
|
||
|
|
# first process audio data if it exists
|
||
|
|
if ($$dirInfo{RAF}) {
|
||
|
|
my $oldType = $$et{FILE_TYPE}; # save file type
|
||
|
|
# check current file type first
|
||
|
|
my @types = grep /^$oldType$/, @audioFormats;
|
||
|
|
push @types, grep(!/^$oldType$/, @audioFormats);
|
||
|
|
my $type;
|
||
|
|
foreach $type (@types) {
|
||
|
|
# seek to end of ID3 header
|
||
|
|
$raf->Seek($hdrEnd, 0);
|
||
|
|
# set type for this file if we are successful
|
||
|
|
$$et{FILE_TYPE} = $type;
|
||
|
|
my $module = $audioModule{$type} || $type;
|
||
|
|
require "Image/ExifTool/$module.pm" or next;
|
||
|
|
my $func = "Image::ExifTool::${module}::Process$type";
|
||
|
|
# process the file
|
||
|
|
no strict 'refs';
|
||
|
|
&$func($et, $dirInfo) and last;
|
||
|
|
use strict 'refs';
|
||
|
|
}
|
||
|
|
$$et{FILE_TYPE} = $oldType; # restore original file type
|
||
|
|
}
|
||
|
|
# set file type to MP3 if we didn't find audio data
|
||
|
|
$et->SetFileType('MP3');
|
||
|
|
# record the size of the ID3 metadata
|
||
|
|
$et->FoundTag('ID3Size', $id3Len);
|
||
|
|
# process ID3v2 header if it exists
|
||
|
|
if (%id3Header) {
|
||
|
|
$et->VPrint(0, "$id3Header{DirName}:\n");
|
||
|
|
$et->ProcessDirectory(\%id3Header, $tagTablePtr);
|
||
|
|
}
|
||
|
|
# process ID3v1 trailer if it exists
|
||
|
|
if (%id3Trailer) {
|
||
|
|
$et->VPrint(0, "ID3v1:\n");
|
||
|
|
SetByteOrder('MM');
|
||
|
|
$tagTablePtr = GetTagTable('Image::ExifTool::ID3::v1');
|
||
|
|
$et->ProcessDirectory(\%id3Trailer, $tagTablePtr);
|
||
|
|
# process "Enhanced TAG" information if available
|
||
|
|
if ($id3Trailer{EnhancedTAG}) {
|
||
|
|
$et->VPrint(0, "ID3v1 Enhanced TAG:\n");
|
||
|
|
$tagTablePtr = GetTagTable('Image::ExifTool::ID3::v1_Enh');
|
||
|
|
$id3Trailer{DataPt} = $id3Trailer{EnhancedTAG};
|
||
|
|
$id3Trailer{DataPos} -= 227; # (227 = length of Enhanced TAG block)
|
||
|
|
$id3Trailer{DirLen} = 227;
|
||
|
|
$et->ProcessDirectory(\%id3Trailer, $tagTablePtr);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
# return file pointer to start of file to read audio data if necessary
|
||
|
|
$raf->Seek(0, 0);
|
||
|
|
return $rtnVal;
|
||
|
|
}
|
||
|
|
|
||
|
|
#------------------------------------------------------------------------------
|
||
|
|
# Extract ID3 information from an MP3 audio file
|
||
|
|
# Inputs: 0) ExifTool object reference, 1) dirInfo reference
|
||
|
|
# Returns: 1 on success, 0 if this wasn't a valid MP3 file
|
||
|
|
sub ProcessMP3($$)
|
||
|
|
{
|
||
|
|
my ($et, $dirInfo) = @_;
|
||
|
|
my $rtnVal = 0;
|
||
|
|
|
||
|
|
# must first check for leading/trailing ID3 information
|
||
|
|
# (and process the rest of the file if found)
|
||
|
|
unless ($$et{DoneID3}) {
|
||
|
|
$rtnVal = ProcessID3($et, $dirInfo);
|
||
|
|
}
|
||
|
|
|
||
|
|
# check for MPEG A/V data if not already processed above
|
||
|
|
unless ($rtnVal) {
|
||
|
|
my $raf = $$dirInfo{RAF};
|
||
|
|
my $buff;
|
||
|
|
#
|
||
|
|
# extract information from first audio/video frame headers
|
||
|
|
# (if found in the first $scanLen bytes)
|
||
|
|
#
|
||
|
|
# scan further into a file that should be an MP3
|
||
|
|
my $scanLen = ($$et{FILE_EXT} and $$et{FILE_EXT} eq 'MP3') ? 8192 : 256;
|
||
|
|
if ($raf->Read($buff, $scanLen)) {
|
||
|
|
require Image::ExifTool::MPEG;
|
||
|
|
if ($buff =~ /\0\0\x01(\xb3|\xc0)/) {
|
||
|
|
# look for A/V headers in first 64kB
|
||
|
|
my $buf2;
|
||
|
|
$raf->Read($buf2, 0x10000 - $scanLen) and $buff .= $buf2;
|
||
|
|
$rtnVal = 1 if Image::ExifTool::MPEG::ParseMPEGAudioVideo($et, \$buff);
|
||
|
|
} else {
|
||
|
|
# look for audio frame sync in first $scanLen bytes
|
||
|
|
# (set MP3 flag to 1 so this will fail unless layer 3 audio)
|
||
|
|
my $ext = $$et{FILE_EXT} || '';
|
||
|
|
my $mp3 = ($ext eq 'MUS') ? 0 : 1; # MUS files are MP2
|
||
|
|
$rtnVal = 1 if Image::ExifTool::MPEG::ParseMPEGAudio($et, \$buff, $mp3);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# check for an APE trailer if this was a valid A/V file and we haven't already done it
|
||
|
|
if ($rtnVal and not $$et{DoneAPE}) {
|
||
|
|
require Image::ExifTool::APE;
|
||
|
|
Image::ExifTool::APE::ProcessAPE($et, $dirInfo);
|
||
|
|
}
|
||
|
|
return $rtnVal;
|
||
|
|
}
|
||
|
|
|
||
|
|
1; # end
|
||
|
|
|
||
|
|
__END__
|
||
|
|
|
||
|
|
=head1 NAME
|
||
|
|
|
||
|
|
Image::ExifTool::ID3 - Read ID3 meta information
|
||
|
|
|
||
|
|
=head1 SYNOPSIS
|
||
|
|
|
||
|
|
This module is used by Image::ExifTool
|
||
|
|
|
||
|
|
=head1 DESCRIPTION
|
||
|
|
|
||
|
|
This module contains definitions required by Image::ExifTool to extract ID3
|
||
|
|
information from audio files. ID3 information is found in MP3 and various
|
||
|
|
other types of audio files.
|
||
|
|
|
||
|
|
=head1 AUTHOR
|
||
|
|
|
||
|
|
Copyright 2003-2018, Phil Harvey (phil at owl.phy.queensu.ca)
|
||
|
|
|
||
|
|
This library is free software; you can redistribute it and/or modify it
|
||
|
|
under the same terms as Perl itself.
|
||
|
|
|
||
|
|
=head1 REFERENCES
|
||
|
|
|
||
|
|
=over 4
|
||
|
|
|
||
|
|
=item L<http://www.id3.org/>
|
||
|
|
|
||
|
|
=item L<http://www.mp3-tech.org/>
|
||
|
|
|
||
|
|
=item L<http://www.fortunecity.com/underworld/sonic/3/id3tag.html>
|
||
|
|
|
||
|
|
=back
|
||
|
|
|
||
|
|
=head1 SEE ALSO
|
||
|
|
|
||
|
|
L<Image::ExifTool::TagNames/ID3 Tags>,
|
||
|
|
L<Image::ExifTool(3pm)|Image::ExifTool>
|
||
|
|
|
||
|
|
=cut
|
||
|
|
|