2009-02-26 22:39:53 -05:00
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! Copyright (C) 2009 Tim Wawrzynczak, Doug Coleman.
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2009-02-09 22:50:04 -05:00
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! See http://factorcode.org/license.txt for BSD license.
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2009-02-26 18:54:44 -05:00
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USING: sequences io io.encodings.binary io.files io.pathnames
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strings kernel math io.mmap io.mmap.uchar accessors syntax
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combinators math.ranges unicode.categories byte-arrays
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2009-02-26 23:33:43 -05:00
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io.encodings.string io.encodings.utf16 assocs math.parser
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2009-02-27 01:23:04 -05:00
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combinators.short-circuit fry namespaces combinators.smart
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splitting io.encodings.ascii arrays ;
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2009-02-09 22:50:04 -05:00
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IN: id3
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<PRIVATE
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CONSTANT: genres
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{
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"Blues" "Classic Rock" "Country" "Dance" "Disco" "Funk"
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"Grunge" "Hip-Hop" "Jazz" "Metal" "New Age" "Oldies" "Other"
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"Pop" "R&B" "Rap" "Reggae" "Rock" "Techno" "Industrial"
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"Alternative" "Ska" "Death Metal" "Pranks" "Soundtrack"
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"Euro-Techno" "Ambient" "Trip-Hop" "Vocal" "Jazz+Funk"
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"Fusion" "Trance" "Classical" "Instrumental" "Acid" "House"
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"Game" "Sound Clip" "Gospel" "Noise" "AlternRock" "Bass"
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"Soul" "Punk" "Space" "Meditative" "Instrumental Pop"
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"Instrumental Rock" "Ethnic" "Gothic" "Darkwave"
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"Techno-Industrial" "Electronic" "Pop-Folk" "Eurodance"
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"Dream" "Southern Rock" "Comedy" "Cult" "Gangsta" "Top 40"
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"Christian Rap" "Pop/Funk" "Jungle" "Native American"
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"Cabaret" "New Wave" "Psychedelic" "Rave" "Showtunes"
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"Trailer" "Lo-Fi" "Tribal" "Acid Punk" "Acid Jazz" "Polka"
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"Retro" "Musical" "Rock & Roll" "Hard Rock" "Folk"
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"Folk-Rock" "National Folk" "Swing" "Fast Fusion" "Bebop"
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"Latin" "Revival" "Celtic" "Bluegrass" "Avantgarde"
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"Gothic Rock" "Progressive Rock" "Psychedelic Rock"
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"Symphonic Rock" "Slow Rock" "Big Band" "Chorus"
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"Easy Listening" "Acoustic" "Humour" "Speech" "Chanson"
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"Opera" "Chamber Music" "Sonata" "Symphony" "Booty Bass"
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"Primus" "Porn Groove" "Satire" "Slow Jam" "Club" "Tango"
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"Samba" "Folklore" "Ballad" "Power Ballad" "Rhythmic Soul"
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"Freestyle" "Duet" "Punk Rock" "Drum Solo" "A capella"
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"Euro-House" "Dance Hall"
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}
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TUPLE: header version flags size ;
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TUPLE: frame frame-id flags size data ;
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TUPLE: id3v2-info header frames ;
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TUPLE: id3-info title artist album year comment genre ;
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: <id3-info> ( -- object ) id3-info new ;
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: <id3v2-info> ( header frames -- object )
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[ [ frame-id>> ] keep ] H{ } map>assoc
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id3v2-info boa ;
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: <header> ( -- object ) header new ;
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: <frame> ( -- object ) frame new ;
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: id3v2? ( mmap -- ? ) "ID3" head? ; inline
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: id3v1? ( mmap -- ? )
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{ [ length 128 >= ] [ 128 tail-slice* "TAG" head? ] } 1&& ; inline
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: id3v1-frame ( string key -- frame )
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<frame>
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swap >>frame-id
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swap >>data ;
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: id3v1>id3v2 ( id3v1 -- id3v2 )
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[
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{
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[ title>> "TIT2" id3v1-frame ]
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[ artist>> "TPE1" id3v1-frame ]
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[ album>> "TALB" id3v1-frame ]
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[ year>> "TYER" id3v1-frame ]
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[ comment>> "COMM" id3v1-frame ]
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[ genre>> "TCON" id3v1-frame ]
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} cleave
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] output>array f swap <id3v2-info> ;
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: >28bitword ( seq -- int )
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0 [ [ 7 shift ] dip bitor ] reduce ; inline
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: filter-text-data ( data -- filtered )
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[ printable? ] filter ; inline
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: valid-frame-id? ( id -- ? )
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[ { [ digit? ] [ LETTER? ] } 1|| ] all? ; inline
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: read-frame-data ( frame mmap -- frame data )
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[ 10 over size>> 10 + ] dip <slice> filter-text-data ; inline
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: decode-text ( string -- string' )
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dup 2 short head
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{ { HEX: ff HEX: fe } { HEX: fe HEX: ff } } member?
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utf16 ascii ? decode ; inline
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: (read-frame) ( mmap -- frame )
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[ <frame> ] dip
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{
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[ 4 head-slice decode-text >>frame-id ]
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[ [ 4 8 ] dip subseq >28bitword >>size ]
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[ [ 8 10 ] dip subseq >byte-array >>flags ]
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[ read-frame-data decode-text >>data ]
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} cleave ;
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: read-frame ( mmap -- frame/f )
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dup 4 head-slice valid-frame-id?
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[ (read-frame) ] [ drop f ] if ;
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: remove-frame ( mmap frame -- mmap )
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size>> 10 + tail-slice ; inline
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: read-frames ( mmap -- frames )
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[ dup read-frame dup ]
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[ [ remove-frame ] keep ]
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[ drop ] produce nip ;
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! header stuff
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: read-v2-header ( seq -- id3header )
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[ <header> ] dip
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{
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[ [ 3 5 ] dip <slice> >array >>version ]
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[ [ 5 ] dip nth >>flags ]
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[ [ 6 10 ] dip <slice> >28bitword >>size ]
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} cleave ; inline
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: read-v2-tag-data ( seq -- id3v2-info )
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10 cut-slice
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[ read-v2-header ]
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[ read-frames ] bi* <id3v2-info> ; inline
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! v1 information
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: skip-to-v1-data ( seq -- seq ) 125 tail-slice* ; inline
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: (read-v1-tag-data) ( seq -- mp3-file )
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[ <id3-info> ] dip
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{
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[ 30 head-slice decode-text filter-text-data >>title ]
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[ [ 30 60 ] dip subseq decode-text filter-text-data >>artist ]
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[ [ 60 90 ] dip subseq decode-text filter-text-data >>album ]
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[ [ 90 94 ] dip subseq decode-text filter-text-data >>year ]
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[ [ 94 124 ] dip subseq decode-text filter-text-data >>comment ]
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[ [ 124 ] dip nth number>string >>genre ]
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} cleave ; inline
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: read-v1-tag-data ( seq -- mp3-file )
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skip-to-v1-data (read-v1-tag-data) ; inline
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: parse-genre ( string -- n/f )
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dup "(" ?head-slice drop ")" ?tail-slice drop
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string>number dup number? [
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genres ?nth swap or
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] [
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drop
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] if ; inline
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PRIVATE>
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: frame-named ( id3 name quot -- obj )
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[ swap frames>> at* ] dip
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[ data>> ] prepose [ drop f ] if ; inline
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: id3-title ( id3 -- title/f ) "TIT2" [ ] frame-named ; inline
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: id3-artist ( id3 -- artist/f ) "TPE1" [ ] frame-named ; inline
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: id3-album ( id3 -- album/f ) "TALB" [ ] frame-named ; inline
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: id3-year ( id3 -- year/f ) "TYER" [ ] frame-named ; inline
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: id3-comment ( id3 -- comment/f ) "COMM" [ ] frame-named ; inline
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: id3-genre ( id3 -- genre/f )
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"TCON" [ parse-genre ] frame-named ; inline
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: id3-frame ( id3 key -- value/f ) [ ] frame-named ; inline
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: file-id3-tags ( path -- id3v2-info/f )
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[
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{
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{ [ dup id3v2? ] [ read-v2-tag-data ] }
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{ [ dup id3v1? ] [ read-v1-tag-data id3v1>id3v2 ] }
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[ drop f ]
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} cond
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] with-mapped-uchar-file ;
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: write-id3-tags ( id3v2-info path -- )
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binary [
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] with-file-writer ;
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