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