;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; Copyright (C) 2004--2014 Han-Wen Nienhuys <hanwen@xs4all.nl>
+;;;; Copyright (C) 2004--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
;;;;
;;;; LilyPond is free software: you can redistribute it and/or modify
;;;; it under the terms of the GNU General Public License as published by
(display (span-state x) file)
(display "\n" file))
+;; Return the duration of the longest event in the Voice-state.
+(define-method (duration (vs <Voice-state>))
+ (define (duration-max event d1)
+ (let ((d2 (ly:event-property event 'duration #f)))
+ (if d2
+ (if (ly:duration<? d1 d2) d2 d1)
+ d1)))
+
+ (fold duration-max (ly:make-duration 0 0 0) (events vs)))
+
+;; Return the moment that the longest event in the Voice-state ends.
+(define-method (end-moment (vs <Voice-state>))
+ (ly:moment-add (moment vs) (ly:duration-length (duration vs))))
+
(define-method (note-events (vs <Voice-state>))
(define (f? x)
(ly:in-event-class? x 'note-event))
(filter f? (events vs)))
-(define-method (rest-and-skip-events (vs <Voice-state>))
+; Return a list of note events which is sorted and stripped of
+; properties that we do not want to prevent combining parts.
+(define-method (comparable-note-events (vs <Voice-state>))
+ (define (note<? note1 note2)
+ (let ((p1 (ly:event-property note1 'pitch))
+ (p2 (ly:event-property note2 'pitch)))
+ (cond ((ly:pitch<? p1 p2) #t)
+ ((ly:pitch<? p2 p1) #f)
+ (else (ly:duration<? (ly:event-property note1 'duration)
+ (ly:event-property note2 'duration))))))
+ ;; TODO we probably should compare articulations too
+ (sort (map (lambda (x)
+ (ly:make-stream-event
+ (ly:make-event-class 'note-event)
+ (list (cons 'duration (ly:event-property x 'duration))
+ (cons 'pitch (ly:event-property x 'pitch)))))
+ (note-events vs))
+ note<?))
+
+(define-method (rest-or-skip-events (vs <Voice-state>))
+ (define (filtered-events event-class)
+ (filter (lambda(x) (ly:in-event-class? x event-class))
+ (events vs)))
+ (let ((result (filtered-events 'rest-event)))
+ ;; There may be skips in the same part with rests for various
+ ;; reasons. Regard the skips only if there are no rests.
+ (if (and (not (pair? result)) (not (any-mmrest-events vs)))
+ (set! result (filtered-events 'skip-event)))
+ result))
+
+(define-method (any-mmrest-events (vs <Voice-state>))
(define (f? x)
- (or (ly:in-event-class? x 'rest-event)
- (ly:in-event-class? x 'skip-event)))
- (filter f? (events vs)))
+ (ly:in-event-class? x 'multi-measure-rest-event))
+ (any f? (events vs)))
(define-method (previous-voice-state (vs <Voice-state>))
(let ((i (slot-ref vs 'vector-index))
(display " synced "))
(display "\n" f))
+(define-method (current-or-previous-voice-states (ss <Split-state>))
+ "Return voice states meeting the following conditions. For a voice
+in sync, return the current voice state. For a voice out of sync,
+return the previous voice state."
+ (let* ((vss (voice-states ss))
+ (vs1 (car vss))
+ (vs2 (cdr vss)))
+ (if (and vs1 (not (equal? (moment vs1) (moment ss))))
+ (set! vs1 (previous-voice-state vs1)))
+ (if (and vs2 (not (equal? (moment vs2) (moment ss))))
+ (set! vs2 (previous-voice-state vs2)))
+ (cons vs1 vs2)))
+
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(if p (span-state p) '())))
(define (make-voice-states evl)
- (let ((vec (list->vector (map (lambda (v)
- (make <Voice-state>
- #:moment (caar v)
- #:tuning (cdar v)
- #:events (map car (cdr v))))
- evl))))
- (do ((i 0 (1+ i)))
- ((= i (vector-length vec)) vec)
- (slot-set! (vector-ref vec i) 'vector-index i)
- (slot-set! (vector-ref vec i) 'state-vector vec))))
+ (let* ((states (map (lambda (v)
+ (make <Voice-state>
+ #:moment (caar v)
+ #:tuning (cdar v)
+ #:events (map car (cdr v))))
+ (reverse evl))))
+
+ ;; add an entry with no events at the moment the last event ends
+ (if (pair? states)
+ (let ((last-real-event (car states)))
+ (set! states
+ (cons (make <Voice-state>
+ #:moment (end-moment last-real-event)
+ #:tuning (tuning last-real-event)
+ #:events '())
+ states))))
+
+ ;; TODO: Add an entry at +inf.0 and see if it allows us to remove
+ ;; the many instances of conditional code handling the case that
+ ;; there is no voice state at a given moment.
+
+ (let ((vec (list->vector (reverse! states))))
+ (do ((i 0 (1+ i)))
+ ((= i (vector-length vec)) vec)
+ (slot-set! (vector-ref vec i) 'vector-index i)
+ (slot-set! (vector-ref vec i) 'state-vector vec)))))
(define (make-split-state vs1 vs2)
"Merge lists VS1 and VS2, containing Voice-state objects into vector
((context-list '())
(now-mom (ly:make-moment 0 0))
(global (ly:make-global-context odef))
- (mom-listener (ly:make-listener
- (lambda (tev) (set! now-mom (ly:event-property tev 'moment)))))
+ (mom-listener (lambda (tev) (set! now-mom (ly:event-property tev 'moment))))
(new-context-listener
- (ly:make-listener
- (lambda (sev)
- (let*
- ((child (ly:event-property sev 'context))
- (this-moment-list (cons (ly:context-id child) '()))
- (dummy (set! context-list (cons this-moment-list context-list)))
- (acc '())
- (accumulate-event-listener
- (ly:make-listener (lambda (ev)
- (set! acc (cons (cons ev #t) acc)))))
- (save-acc-listener
- (ly:make-listener (lambda (tev)
- (if (pair? acc)
- (let ((this-moment
- (cons (cons now-mom
- (ly:context-property child 'instrumentTransposition))
- ;; The accumulate-event-listener above creates
- ;; the list of events in reverse order, so we
- ;; have to revert it to the original order again
- (reverse acc))))
- (set-cdr! this-moment-list
- (cons this-moment (cdr this-moment-list)))
- (set! acc '())))))))
- (ly:add-listener accumulate-event-listener
- (ly:context-event-source child) 'StreamEvent)
- (ly:add-listener save-acc-listener
- (ly:context-event-source global) 'OneTimeStep))))))
+ (lambda (sev)
+ (let*
+ ((child (ly:event-property sev 'context))
+ (this-moment-list (cons (ly:context-id child) '()))
+ (dummy (set! context-list (cons this-moment-list context-list)))
+ (acc '())
+ (accumulate-event-listener
+ (lambda (ev)
+ (set! acc (cons (cons ev #t) acc))))
+ (save-acc-listener
+ (lambda (tev)
+ (if (pair? acc)
+ (let ((this-moment
+ (cons (cons now-mom
+ (ly:context-property child 'instrumentTransposition))
+ ;; The accumulate-event-listener above creates
+ ;; the list of events in reverse order, so we
+ ;; have to revert it to the original order again
+ (reverse acc))))
+ (set-cdr! this-moment-list
+ (cons this-moment (cdr this-moment-list)))
+ (set! acc '()))))))
+ (ly:add-listener accumulate-event-listener
+ (ly:context-event-source child) 'StreamEvent)
+ (ly:add-listener save-acc-listener
+ (ly:context-event-source global) 'OneTimeStep)))))
(ly:add-listener new-context-listener
(ly:context-events-below global) 'AnnounceNewContext)
(ly:add-listener mom-listener (ly:context-event-source global) 'Prepare)
global)
context-list))
-(define-public (make-part-combine-music parser music-list direction chord-range)
- (let* ((m (make-music 'PartCombineMusic))
- (m1 (make-non-relative-music (context-spec-music (first music-list) 'Voice "one")))
- (m2 (make-non-relative-music (context-spec-music (second music-list) 'Voice "two")))
- (listener (ly:parser-lookup parser 'partCombineListener))
- (evs2 (recording-group-emulate m2 listener))
- (evs1 (recording-group-emulate m1 listener)))
-
- (set! (ly:music-property m 'elements) (list m1 m2))
- (set! (ly:music-property m 'direction) direction)
- (set! (ly:music-property m 'split-list)
- (if (and (assoc "one" evs1) (assoc "two" evs2))
- (determine-split-list (reverse! (assoc-get "one" evs1) '())
- (reverse! (assoc-get "two" evs2) '())
- chord-range)
- '()))
- m))
-
(define-public (determine-split-list evl1 evl2 chord-range)
"@var{evl1} and @var{evl2} should be ascending. @var{chord-range} is a pair of numbers (min . max) defining the distance in steps between notes that may be combined into a chord or unison."
(let* ((pc-debug #f)
(define (analyse-forced-combine result-idx prev-res)
(define (get-forced-event x)
- (and (ly:in-event-class? x 'part-combine-force-event)
- (cons (ly:event-property x 'forced-type)
- (ly:event-property x 'once))))
+ (cond
+ ((and (ly:in-event-class? x 'SetProperty)
+ (eq? (ly:event-property x 'symbol) 'partCombineForced))
+ (cons (ly:event-property x 'value #f)
+ (ly:event-property x 'once #f)))
+ ((and (ly:in-event-class? x 'UnsetProperty)
+ (eq? (ly:event-property x 'symbol) 'partCombineForced))
+ (cons #f (ly:event-property x 'once #f)))
+ (else #f)))
+
(define (part-combine-events vs)
(if (not vs)
'()
(if (< result-idx (vector-length result))
(let* ((now-state (vector-ref result result-idx)) ; current result
;; Extract all part-combine force events
- (ev1 (part-combine-events (car (voice-states now-state))))
- (ev2 (part-combine-events (cdr (voice-states now-state))))
- (evts (append ev1 ev2))
+ (evts (if (synced? now-state)
+ (append
+ (part-combine-events (car (voice-states now-state)))
+ (part-combine-events (cdr (voice-states now-state))))
+ '()))
;; result is (once-state permament-state):
(state (fold forced-result (cons 'automatic prev-res) evts))
;; Now let once override permanent changes:
(define (analyse-notes now-state)
(let* ((vs1 (car (voice-states now-state)))
(vs2 (cdr (voice-states now-state)))
- (notes1 (note-events vs1))
- (durs1 (sort (map (lambda (x) (ly:event-property x 'duration))
- notes1)
- ly:duration<?))
- (pitches1 (sort (map (lambda (x) (ly:event-property x 'pitch))
- notes1)
- ly:pitch<?))
- (notes2 (note-events vs2))
- (durs2 (sort (map (lambda (x) (ly:event-property x 'duration))
- notes2)
- ly:duration<?))
- (pitches2 (sort (map (lambda (x) (ly:event-property x 'pitch))
- notes2)
- ly:pitch<?)))
- (cond ((> (length notes1) 1) (put 'apart))
- ((> (length notes2) 1) (put 'apart))
- ((= 1 (+ (length notes2) (length notes1))) (put 'apart))
- ((and (= (length durs1) 1)
- (= (length durs2) 1)
- (not (equal? (car durs1) (car durs2))))
- (put 'apart))
- (else
- (if (and (= (length pitches1) (length pitches2)))
- (if (and (pair? pitches1)
- (pair? pitches2)
- ; Is the interval outside of chord-range?
- (let ((diff (ly:pitch-steps
- (ly:pitch-diff (car pitches1)
- (car pitches2)))))
- (or (< diff chord-min-diff)
- (> diff chord-max-diff)
- )))
- (put 'apart)
- ;; copy previous split state from spanner state
- (begin
- (if (previous-voice-state vs1)
- (copy-state-from voice-state-vec1
- (previous-voice-state vs1)))
- (if (previous-voice-state vs2)
- (copy-state-from voice-state-vec2
- (previous-voice-state vs2)))
- (if (and (null? (span-state vs1)) (null? (span-state vs2)))
- (put 'chords)))))))))
+ (notes1 (comparable-note-events vs1))
+ (notes2 (comparable-note-events vs2)))
+ (cond
+ ;; if neither part has notes, do nothing
+ ((and (not (pair? notes1)) (not (pair? notes2))))
+
+ ;; if one part has notes and the other does not
+ ((or (not (pair? notes1)) (not (pair? notes2))) (put 'apart))
+
+ ;; if either part has a chord
+ ((or (> (length notes1) 1)
+ (> (length notes2) 1))
+ (if (and (<= chord-min-diff 0) ; user requests combined unisons
+ (equal? notes1 notes2)) ; both parts have the same chord
+ (put 'chords)
+ (put 'apart)))
+
+ ;; if the durations are different
+ ;; TODO articulations too?
+ ((and (not (equal? (ly:event-property (car notes1) 'duration)
+ (ly:event-property (car notes2) 'duration))))
+ (put 'apart))
+
+ (else
+ ;; Is the interval outside of chord-range?
+ (if (let ((diff (ly:pitch-steps
+ (ly:pitch-diff
+ (ly:event-property (car notes1) 'pitch)
+ (ly:event-property (car notes2) 'pitch)))))
+ (or (< diff chord-min-diff)
+ (> diff chord-max-diff)
+ ))
+ (put 'apart)
+ ;; copy previous split state from spanner state
+ (begin
+ (if (previous-voice-state vs1)
+ (copy-state-from voice-state-vec1
+ (previous-voice-state vs1)))
+ (if (previous-voice-state vs2)
+ (copy-state-from voice-state-vec2
+ (previous-voice-state vs2)))
+ (if (and (null? (span-state vs1)) (null? (span-state vs2)))
+ (put 'chords))))))))
(if (< result-idx (vector-length result))
(let* ((now-state (vector-ref result result-idx))
(vs1 (car (voice-states now-state)))
(vs2 (cdr (voice-states now-state))))
- (define (analyse-silence)
- (let ((rests1 (if vs1 (rest-and-skip-events vs1) '()))
- (rests2 (if vs2 (rest-and-skip-events vs2) '())))
+ (define (analyse-synced-silence)
+ (let ((rests1 (if vs1 (rest-or-skip-events vs1) '()))
+ (rests2 (if vs2 (rest-or-skip-events vs2) '())))
(cond
-
+
;; multi-measure rests (probably), which the
;; part-combine iterator handles well
- ((and (synced? now-state)
- (= 0 (length rests1))
+ ((and (= 0 (length rests1))
(= 0 (length rests2)))
(set! (configuration now-state) 'unisilence))
-
+
;; equal rests or equal skips, but not one of each
- ((and (synced? now-state)
- (= 1 (length rests1))
+ ((and (= 1 (length rests1))
(= 1 (length rests2))
(equal? (ly:event-property (car rests1) 'class)
(ly:event-property (car rests2) 'class))
(equal? (ly:event-property (car rests1) 'duration)
(ly:event-property (car rests2) 'duration)))
(set! (configuration now-state) 'unisilence))
-
+
;; rests of different durations or mixed with
;; skips or multi-measure rests
- ((synced? now-state)
- ;; TODO When one part has a rest and the other has a
- ;; multi-measure rest, tell the part-combine
- ;; iterator to route the part with the rest to the
- ;; shared voice. Until there is a way to do this,
- ;; we print them both; it does not look very good,
- ;; but failing to print the rest is misleading.
- ;;
- ;; Maybe do something similar for skips; route
- ;; the rest to the shared voice and the skip to
- ;; the voice for its part.
+ (else
+ ;; TODO For skips, route the rest to the shared
+ ;; voice and the skip to the voice for its part?
(set! (configuration now-state) 'apart-silence))
-
- ;; TODO At a multi-measure rest, return to unisilence
- ;; even after having been apart. The results are not
- ;; good now because of the deficiency mentioned
- ;; above.
+
+ )))
+
+ (define (analyse-unsynced-silence vs1 vs2)
+ (let ((any-mmrests1 (if vs1 (any-mmrest-events vs1) #f))
+ (any-mmrests2 (if vs2 (any-mmrest-events vs2) #f)))
+ (cond
+ ;; If a multi-measure rest begins now while the other
+ ;; part has an ongoing multi-measure rest (or has
+ ;; ended), start displaying the one that begins now.
+ ((and any-mmrests1
+ (equal? (moment vs1) (moment now-state))
+ (or (not vs2) any-mmrests2))
+ (set! (configuration now-state) 'silence1))
+
+ ;; as above with parts swapped
+ ((and any-mmrests2
+ (equal? (moment vs2) (moment now-state))
+ (or (not vs1) any-mmrests1))
+ (set! (configuration now-state) 'silence2))
)))
(if (or vs1 vs2)
- (let ((notes1 (if vs1 (note-events vs1) '()))
- (notes2 (if vs2 (note-events vs2) '())))
- ; Todo: What about a2 chords, e.g. string multi-stops?
- ; Sort and compare notes1 and notes2?
+ (let ((notes1 (if vs1 (comparable-note-events vs1) '()))
+ (notes2 (if vs2 (comparable-note-events vs2) '())))
(cond ((and (equal? (configuration now-state) 'chords)
- (= 1 (length notes1))
- (= 1 (length notes2))
- (equal? (ly:event-property (car notes1) 'pitch)
- (ly:event-property (car notes2) 'pitch)))
+ (pair? notes1)
+ (equal? notes1 notes2))
(set! (configuration now-state) 'unisono))
- ((and (= 0 (length notes1))
- (= 0 (length notes2)))
- (analyse-silence)))))
+
+ ((synced? now-state)
+ (if (and (= 0 (length notes1))
+ (= 0 (length notes2)))
+ (analyse-synced-silence)))
+
+ (else ;; not synchronized
+ (let* ((vss
+ (current-or-previous-voice-states now-state))
+ (vs1 (car vss))
+ (vs2 (cdr vss)))
+ (if (and
+ (or (not vs1) (= 0 (length (note-events vs1))))
+ (or (not vs2) (= 0 (length (note-events vs2)))))
+ (analyse-unsynced-silence vs1 vs2))))
+ )))
(analyse-a2 (1+ result-idx)))))
(define (analyse-solo12 result-idx)
;; try-solo
start-idx))
- (define (analyse-moment result-idx)
+ (define (analyse-apart-silence result-idx)
+ "Analyse 'apart-silence starting at RESULT-IDX. Return next index."
+ (let* ((now-state (vector-ref result result-idx))
+ (vs1 (current-voice-state now-state 1))
+ (vs2 (current-voice-state now-state 2))
+ (rests1 (if vs1 (rest-or-skip-events vs1) '()))
+ (rests2 (if vs2 (rest-or-skip-events vs2) '()))
+ (prev-state (if (> result-idx 0)
+ (vector-ref result (- result-idx 1))
+ #f))
+ (prev-config (if prev-state
+ (configuration prev-state)
+ 'apart-silence)))
+ (cond
+ ;; rest with multi-measure rest: choose the rest
+ ((and (synced? now-state)
+ (= 1 (length rests1))
+ (ly:in-event-class? (car rests1) 'rest-event)
+ (= 0 (length rests2))) ; probably mmrest
+ (put 'silence1))
+
+ ;; as above with parts swapped
+ ((and (synced? now-state)
+ (= 1 (length rests2))
+ (ly:in-event-class? (car rests2) 'rest-event)
+ (= 0 (length rests1))) ; probably mmrest
+ (put 'silence2))
+
+ ((synced? now-state)
+ (put 'apart-silence))
+
+ ;; remain in the silence1/2 states until resync
+ ((equal? prev-config 'silence1)
+ (put 'silence1))
+
+ ((equal? prev-config 'silence2)
+ (put 'silence2))
+
+ (else
+ (put 'apart-silence)))
+
+ (1+ result-idx)))
+
+ (define (analyse-apart result-idx)
"Analyse 'apart starting at RESULT-IDX. Return next index."
(let* ((now-state (vector-ref result result-idx))
(vs1 (current-voice-state now-state 1))
(max
;; we should always increase.
(cond ((and (= n1 0) (= n2 0))
- (put 'apart-silence)
- (1+ result-idx))
+ ;; If we hit this, it means that the previous passes
+ ;; have designated as 'apart what is really
+ ;; 'apart-silence.
+ (analyse-apart-silence result-idx))
((and (= n2 0)
(equal? (moment vs1) (moment now-state))
(null? (previous-span-state vs1)))
(1+ result-idx))))
(if (< result-idx (vector-length result))
- (if (equal? (configuration (vector-ref result result-idx)) 'apart)
- (analyse-solo12 (analyse-moment result-idx))
- (analyse-solo12 (1+ result-idx))))) ; analyse-solo12
+ (let ((conf (configuration (vector-ref result result-idx))))
+ (cond
+ ((equal? conf 'apart)
+ (analyse-solo12 (analyse-apart result-idx)))
+ ((equal? conf 'apart-silence)
+ (analyse-solo12 (analyse-apart-silence result-idx)))
+ (else
+ (analyse-solo12 (1+ result-idx))))))) ; analyse-solo12
(analyse-spanner-states voice-state-vec1)
(analyse-spanner-states voice-state-vec2)
(display result))
result))
+(define-public default-part-combine-mark-state-machine
+ ;; (current-state . ((split-state-event .
+ ;; (output-voice output-event next-state)) ...))
+ '((Initial . ((solo1 . (solo SoloOneEvent Solo1))
+ (solo2 . (solo SoloTwoEvent Solo2))
+ (unisono . (shared UnisonoEvent Unisono))))
+ (Solo1 . ((apart . (#f #f Initial))
+ (chords . (#f #f Initial))
+ (solo2 . (solo SoloTwoEvent Solo2))
+ (unisono . (shared UnisonoEvent Unisono))))
+ (Solo2 . ((apart . (#f #f Initial))
+ (chords . (#f #f Initial))
+ (solo1 . (solo SoloOneEvent Solo1))
+ (unisono . (shared UnisonoEvent Unisono))))
+ (Unisono . ((apart . (#f #f Initial))
+ (chords . (#f #f Initial))
+ (solo1 . (solo SoloOneEvent Solo1))
+ (solo2 . (solo SoloTwoEvent Solo2))))))
+
+(define-public (make-part-combine-marks state-machine split-list)
+ "Generate a sequence of part combiner events from a split list"
+
+ (define (get-state state-name)
+ (assq-ref state-machine state-name))
+
+ (let ((full-seq '()) ; sequence of { \context Voice = "x" {} ... }
+ (segment '()) ; sequence within \context Voice = "x" {...}
+ (prev-moment ZERO-MOMENT)
+ (prev-voice #f)
+ (state (get-state 'Initial)))
+
+ (define (commit-segment)
+ "Add the current segment to the full sequence and begin another."
+ (if (pair? segment)
+ (set! full-seq
+ (cons (make-music 'ContextSpeccedMusic
+ 'context-id (symbol->string prev-voice)
+ 'context-type 'Voice
+ 'element (make-sequential-music (reverse! segment)))
+ full-seq)))
+ (set! segment '()))
+
+ (define (handle-split split)
+ (let* ((moment (car split))
+ (action (assq-ref state (cdr split))))
+ (if action
+ (let ((voice (car action))
+ (part-combine-event (cadr action))
+ (next-state-name (caddr action)))
+ (if part-combine-event
+ (let ((dur (ly:moment-sub moment prev-moment)))
+ ;; start a new segment when the voice changes
+ (if (not (eq? voice prev-voice))
+ (begin
+ (commit-segment)
+ (set! prev-voice voice)))
+ (if (not (equal? dur ZERO-MOMENT))
+ (set! segment (cons (make-music 'SkipEvent
+ 'duration (make-duration-of-length dur)) segment)))
+ (set! segment (cons (make-music part-combine-event) segment))
+
+ (set! prev-moment moment)))
+ (set! state (get-state next-state-name))))))
+
+ (for-each handle-split split-list)
+ (commit-segment)
+ (make-sequential-music (reverse! full-seq))))
+
+(define-public default-part-combine-context-change-state-machine-one
+ ;; (current-state . ((split-state-event . (output-voice next-state)) ...))
+ '((Initial . ((apart . (one . Initial))
+ (apart-silence . (one . Initial))
+ (apart-spanner . (one . Initial))
+ (chords . (shared . Initial))
+ (silence1 . (shared . Initial))
+ (silence2 . (null . Demoted))
+ (solo1 . (solo . Initial))
+ (solo2 . (null . Demoted))
+ (unisono . (shared . Initial))
+ (unisilence . (shared . Initial))))
+
+ ;; After a part has been used as the exclusive input for a
+ ;; passage, we want to use it by default for unisono/unisilence
+ ;; passages because Part_combine_iterator might have killed
+ ;; multi-measure rests in the other part. Here we call such a
+ ;; part "promoted". Part one begins promoted.
+ (Demoted . ((apart . (one . Demoted))
+ (apart-silence . (one . Demoted))
+ (apart-spanner . (one . Demoted))
+ (chords . (shared . Demoted))
+ (silence1 . (shared . Initial))
+ (silence2 . (null . Demoted))
+ (solo1 . (solo . Initial))
+ (solo2 . (null . Demoted))
+ (unisono . (null . Demoted))
+ (unisilence . (null . Demoted))))))
+
+(define-public default-part-combine-context-change-state-machine-two
+ ;; (current-state . ((split-state-event . (output-voice next-state)) ...))
+ '((Initial . ((apart . (two . Initial))
+ (apart-silence . (two . Initial))
+ (apart-spanner . (two . Initial))
+ (chords . (shared . Initial))
+ (silence1 . (null . Initial))
+ (silence2 . (shared . Promoted))
+ (solo1 . (null . Initial))
+ (solo2 . (solo . Promoted))
+ (unisono . (null . Initial))
+ (unisilence . (null . Initial))))
+
+ ;; See the part-one state machine for the meaning of "promoted".
+ (Promoted . ((apart . (two . Promoted))
+ (apart-silence . (two . Promoted))
+ (apart-spanner . (two . Promoted))
+ (chords . (shared . Promoted))
+ (silence1 . (null . Initial))
+ (silence2 . (shared . Promoted))
+ (solo1 . (null . Initial))
+ (solo2 . (solo . Promoted))
+ (unisono . (shared . Promoted))
+ (unisilence . (shared . Promoted))))))
+
+(define-public (make-part-combine-context-changes state-machine split-list)
+ "Generate a sequence of part combiner context changes from a split list"
+
+ (define (get-state state-name)
+ (assq-ref state-machine state-name))
+
+ (let ((change-list '())
+ (prev-voice #f)
+ (state (get-state 'Initial)))
+
+ (define (handle-split split)
+ (let* ((moment (car split))
+ (action (assq-ref state (cdr split))))
+ (if action
+ (let ((voice (car action))
+ (next-state-name (cdr action)))
+ (if (not (eq? voice prev-voice))
+ (begin
+ (set! change-list (cons (cons moment voice) change-list))
+ (set! prev-voice voice)))
+ (set! state (get-state next-state-name))))))
+
+ (for-each handle-split split-list)
+ (reverse! change-list)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-(define-public (add-quotable parser name mus)
+(define-public (add-quotable name mus)
(let* ((tab (eval 'musicQuotes (current-module)))
(voicename (get-next-unique-voice-name))
;; recording-group-emulate returns an assoc list (reversed!), so
;; hand it a proper unique context name and extract that key:
(ctx-spec (context-spec-music mus 'Voice voicename))
- (listener (ly:parser-lookup parser 'partCombineListener))
+ (listener (ly:parser-lookup 'partCombineListener))
(context-list (reverse (recording-group-emulate ctx-spec listener)))
(raw-voice (assoc voicename context-list))
(quote-contents (if (pair? raw-voice) (cdr raw-voice) '())))
projects / lilypond.git / blobdiff