! 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
+strings kernel math io.mmap io.mmap.uchar accessors
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 io.files.info unicode.case
-io.directories.search literals ;
+io.directories.search literals math.functions continuations ;
IN: id3
<PRIVATE
{
[ length id3v1-offset >= ]
[ id3v1-length tail-slice* "TAG" head? ]
- } 1&& ; inline
+ } 1&& ;
: id3v1+? ( seq -- ? )
{
[ length id3v1+-offset >= ]
[ id3v1+-length tail-slice* "TAG+" head? ]
- } 1&& ; inline
+ } 1&& ;
: pair>frame ( string key -- frame/f )
over [
swap >>data
] [
2drop f
- ] if ; inline
+ ] if ;
: id3v1>frames ( id3v1 -- seq )
[
} cleave
] output>array sift ;
-: >28bitword ( seq -- int )
- 0 [ [ 7 shift ] dip bitor ] reduce ; inline
+: seq>synchsafe ( seq -- n )
+ 0 [ [ 7 shift ] dip bitor ] reduce ;
+
+: synchsafe>seq ( n -- seq )
+ dup 1 + log2 1 + 7 / ceiling
+ [ [ -7 shift ] keep HEX: 7f bitand ] replicate nip reverse ;
: filter-text-data ( data -- filtered )
- [ printable? ] filter ; inline
+ [ printable? ] filter ;
: valid-tag? ( id -- ? )
- [ { [ digit? ] [ LETTER? ] } 1|| ] all? ; inline
+ [ { [ digit? ] [ LETTER? ] } 1|| ] all? ;
: read-frame-data ( frame seq -- frame data )
- [ 10 over size>> 10 + ] dip <slice> filter-text-data ; inline
+ [ 10 over size>> 10 + ] dip <slice> filter-text-data ;
: decode-text ( string -- string' )
dup 2 short head
{ { HEX: ff HEX: fe } { HEX: fe HEX: ff } } member?
- utf16 ascii ? decode ; inline
+ utf16 ascii ? decode ;
: (read-frame) ( seq -- frame )
[ <frame> ] dip
{
[ 4 head-slice decode-text >>tag ]
- [ [ 4 8 ] dip subseq >28bitword >>size ]
+ [ [ 4 8 ] dip subseq seq>synchsafe >>size ]
[ [ 8 10 ] dip subseq >byte-array >>flags ]
[ read-frame-data decode-text >>data ]
- } cleave ; inline
+ } cleave ;
: read-frame ( seq -- frame/f )
dup 4 head-slice valid-tag?
- [ (read-frame) ] [ drop f ] if ; inline
+ [ (read-frame) ] [ drop f ] if ;
: remove-frame ( seq frame -- seq )
- size>> 10 + tail-slice ; inline
+ size>> 10 + tail-slice ;
: frames>assoc ( seq -- assoc )
- [ [ tag>> ] keep ] H{ } map>assoc ; inline
+ [ [ tag>> ] keep ] H{ } map>assoc ;
: read-frames ( seq -- assoc )
- [ dup read-frame dup ] [ [ remove-frame ] keep ] produce 2nip ; inline
+ [ dup read-frame dup ] [ [ remove-frame ] keep ] produce 2nip ;
: read-v2-header ( seq -- header )
[ <header> ] dip
{
[ [ 3 5 ] dip <slice> >array >>version ]
[ [ 5 ] dip nth >>flags ]
- [ [ 6 10 ] dip <slice> >28bitword >>size ]
- } cleave ; inline
+ [ [ 6 10 ] dip <slice> seq>synchsafe >>size ]
+ } cleave ;
: merge-frames ( id3 assoc -- id3 )
- [ dup frames>> ] dip update ; inline
+ [ dup frames>> ] dip update ;
: merge-id3v1 ( id3 -- id3 )
- dup id3v1>frames frames>assoc merge-frames ; inline
+ dup id3v1>frames frames>assoc merge-frames ;
: read-v2-tags ( id3 seq -- id3 )
10 cut-slice
[ read-v2-header >>header ]
- [ read-frames frames>assoc merge-frames ] bi* ; inline
+ [ read-frames frames>assoc merge-frames ] bi* ;
: extract-v1-tags ( id3 seq -- id3 )
{
[ [ 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
+ } cleave ;
: read-v1-tags ( id3 seq -- id3 )
id3v1-offset tail-slice* 3 tail-slice
- extract-v1-tags ; inline
+ extract-v1-tags ;
: extract-v1+-tags ( id3 seq -- id3 )
{
[ [ 181 211 ] dip subseq decode-text >>genre-name ]
[ [ 211 217 ] dip subseq decode-text >>start-time ]
[ [ 217 223 ] dip subseq decode-text >>end-time ]
- } cleave ; inline
+ } cleave ;
: read-v1+-tags ( id3 seq -- id3 )
id3v1+-offset tail-slice* 4 tail-slice
- extract-v1+-tags ; inline
+ extract-v1+-tags ;
: parse-genre ( string -- n/f )
dup "(" ?head-slice drop ")" ?tail-slice drop
genres ?nth swap or
] [
drop
- ] if ; inline
+ ] if ;
+
+PRIVATE>
-: (mp3>id3) ( path -- id3v2/f )
+: mp3>id3 ( path -- id3/f )
[
[ <id3> ] dip
{
[ dup id3v1+? [ read-v1+-tags merge-id3v1 ] [ drop ] if ]
[ dup id3v2? [ read-v2-tags ] [ drop ] if ]
} cleave
- ] with-mapped-uchar-file ;
-
-PRIVATE>
-
-: mp3>id3 ( path -- id3/f )
- dup file-info size>> 0 <= [ drop f ] [ (mp3>id3) ] if ; inline
+ ] with-mapped-uchar-file-reader ;
: find-id3-frame ( id3 name -- obj/f )
- swap frames>> at* [ data>> ] when ; inline
+ swap frames>> at* [ data>> ] when ;
-: title ( id3 -- string/f ) "TIT2" find-id3-frame ; inline
+: title ( id3 -- string/f ) "TIT2" find-id3-frame ;
-: artist ( id3 -- string/f ) "TPE1" find-id3-frame ; inline
+: artist ( id3 -- string/f ) "TPE1" find-id3-frame ;
-: album ( id3 -- string/f ) "TALB" find-id3-frame ; inline
+: album ( id3 -- string/f ) "TALB" find-id3-frame ;
-: year ( id3 -- string/f ) "TYER" find-id3-frame ; inline
+: year ( id3 -- string/f ) "TYER" find-id3-frame ;
-: comment ( id3 -- string/f ) "COMM" find-id3-frame ; inline
+: comment ( id3 -- string/f ) "COMM" find-id3-frame ;
: genre ( id3 -- string/f )
- "TCON" find-id3-frame parse-genre ; inline
+ "TCON" find-id3-frame parse-genre ;
+
+: find-mp3s ( path -- seq ) ".mp3" find-by-extension ;
+
+ERROR: id3-parse-error path error ;
-: find-mp3s ( path -- seq )
- [ >lower ".mp3" tail? ] find-all-files ; inline
+: (mp3-paths>id3s) ( seq -- seq' )
+ [ dup [ mp3>id3 ] [ \ id3-parse-error boa ] recover ] { } map>assoc ;
: mp3-paths>id3s ( seq -- seq' )
- [ dup mp3>id3 ] { } map>assoc ; inline
+ (mp3-paths>id3s)
+ [ dup second id3-parse-error? [ f over set-second ] when ] map ;
: parse-mp3-directory ( path -- seq )
find-mp3s mp3-paths>id3s ;
projects / factor.git / blobdiff