;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
-(define-module (scm song))
-
-(use-modules (srfi srfi-1))
-(use-modules (ice-9 optargs))
-(use-modules (ice-9 receive))
-
-(use-modules (lily))
-(use-modules (scm song-util))
+(define-module (scm song)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-39)
+ #:use-module (ice-9 optargs)
+ #:use-module (ice-9 receive)
+ #:use-module (lily)
+ #:use-module (scm song-util))
;;; Configuration
;; The word to be sung in places where notes are played without lyrics.
;; If it is #f, the places without lyrics are omitted on the output.
-(define-public *skip-word* "-skip-")
+(define-public *skip-word* (make-parameter "-skip-"))
;; If true, use syllables in the Festival XML file.
;; If false, use whole words instead; this is necessary in languages like
;; English, were the phonetic form cannot be deduced from syllables well enough.
-(define-public *syllabify* #f)
+(define-public *syllabify* (make-parameter #f))
;; Base Festival octave to which LilyPond notes are mapped.
-(define-public *base-octave* 5)
+(define-public *base-octave* (make-parameter 5))
;; The resulting base octave is sum of *base-octave* and
;; *base-octave-shift*. This is done to work around a Festival bug
;; causing Festival to segfault or produce invalid pitch on higher pitches.
;(define *base-octave-shift* -2)
-(define *base-octave-shift* 0)
+(define *base-octave-shift* (make-parameter 0))
;; The coeficient by which the notes just before \breath are shortened.
-(define-public *breathe-shortage* 0.8)
+(define-public *breathe-shortage* (make-parameter 0.8))
;;; LilyPond interface
(exact->inexact (* (expt 2 (- log)) (+ 1 (/ dots 2)) (/ (car factor) (cdr factor))))))
(define (tempo->beats music)
- (let* ((tempo-spec (or (find-child-named music 'MetronomeChangeEvent)
- (find-child-named music 'SequentialMusic)))
+ (let* ((tempo-spec (find-child-named music 'SequentialMusic))
(tempo (cond
- ((not tempo-spec)
- #f)
- ((music-name? tempo-spec 'MetronomeChangeEvent)
- (* (ly:music-property tempo-spec 'metronome-count)
- (duration->number (ly:music-property tempo-spec 'tempo-unit))))
- ((music-name? tempo-spec 'SequentialMusic)
- (* (property-value
- (find-child tempo-spec (lambda (elt)
- (let ((tempo (music-property? elt 'tempoUnitCount)))
- (if (pair? tempo)
- (round (/ (+ (car tempo) (cdr tempo)) 2))
- tempo)))))
- (duration->number
- (property-value
- (find-child tempo-spec (lambda (elt) (music-property? elt 'tempoUnitDuration)))))))
- (else
- (format #t "Programming error (tempo->beats): ~a~%" tempo-spec)))))
+ (tempo-spec
+ (let ((tempo-event (find-child-named tempo-spec
+ 'TempoChangeEvent)))
+ (and tempo-event
+ (let ((count (ly:music-property tempo-event
+ 'metronome-count)))
+ (* (if (pair? count)
+ (round (/ (+ (car count) (cdr count)) 2))
+ count)
+ (duration->number
+ (ly:music-property tempo-event 'tempo-unit)))))))
+ (else
+ (format #t "Programming error (tempo->beats): ~a~%"
+ tempo-spec)))))
(debug-enable 'backtrace)
- (if (and tempo (music-name? tempo-spec 'SequentialMusic))
- (set! *default-tempo* (property-value
- (find-child tempo-spec (lambda (elt) (music-property? elt 'tempoWholesPerMinute))))))
- (if tempo
- (round (* tempo (expt 2 (+ 2 *base-octave-shift*))))
- #f)))
+ (and tempo
+ (set! *default-tempo* (property-value
+ (find-child tempo-spec (lambda (elt)
+ (music-property? elt 'tempoWholesPerMinute)))))
+ (round (* tempo (expt 2 (+ 2 (*base-octave-shift*))))))))
(defstruct music-context
music
(push! (make-lyrics
#:text (ly:music-property lyric-event 'text)
#:duration (* (duration->number (ly:music-property lyric-event 'duration)) 4)
- #:unfinished (and (not *syllabify*) (find-child-named music 'HyphenEvent))
+ #:unfinished (and (not (*syllabify*)) (find-child-named music 'HyphenEvent))
#:ignore-melismata ignore-melismata
#:context current-voice)
lyrics-list))
((music-name? music 'BreathingEvent)
(if last-note-spec
(let* ((note-duration (note-duration last-note-spec))
- (rest-spec (make-rest #:duration (* note-duration (- 1 *breathe-shortage*))
+ (rest-spec (make-rest #:duration (* note-duration (- 1 (*breathe-shortage*)))
#:origin (ly:music-property music 'origin))))
- (set-note-duration! last-note-spec (* note-duration *breathe-shortage*))
+ (set-note-duration! last-note-spec (* note-duration (*breathe-shortage*)))
(add! (make-score-notes #:note/rest-list (list rest-spec)) result-list))
(warning music "\\\\breathe without previous note known")))
;; anything else
last-verse
(append (verse-notelist/rests last-verse) (list notelist/rest))))))
((pair? notelist/rest)
- (add! (make-verse #:text *skip-word* #:notelist/rests (list notelist/rest))
+ (add! (make-verse #:text (*skip-word*) #:notelist/rests (list notelist/rest))
verse-list))
(else
(error "Unreachable branch reached")))
((< duration (- epsilon))
(warning (if (null? note-list) (safe-last consumed) (safe-car note-list))
"Skip misalignment: ~a ~a ~a ~a" context skip duration consumed)))
- (values (if *skip-word*
+ (values (if (*skip-word*)
consumed
'())
note-list)))
(octave (inexact->exact (floor (/ semitones 12))))
(tone (modulo semitones 12)))
(format #f "~a~a" (car (assoc-get tone festival-note-mapping))
- (+ octave *base-octave* *base-octave-shift*))))
+ (+ octave (*base-octave*) (*base-octave-shift*)))))
(define (write-header port tempo)
(let ((beats (or (tempo->beats tempo) 100)))
projects / lilypond.git / blobdiff