X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fpart-combiner.scm;h=c492701c9142087bb6c44ac65deabf1a41d0a224;hb=03f8b5287d9522ba8466684da67ef687b87fa919;hp=df0e0fba42d4e2b5c83f0b6dff6072c557858521;hpb=b7a0cffbf9d1069860368f289a5b50e9d1d90ba8;p=lilypond.git diff --git a/scm/part-combiner.scm b/scm/part-combiner.scm index df0e0fba42..c492701c91 100644 --- a/scm/part-combiner.scm +++ b/scm/part-combiner.scm @@ -1,6 +1,6 @@ ;;;; This file is part of LilyPond, the GNU music typesetter. ;;;; -;;;; Copyright (C) 2004--2009 Han-Wen Nienhuys +;;;; Copyright (C) 2004--2011 Han-Wen Nienhuys ;;;; ;;;; LilyPond is free software: you can redistribute it and/or modify ;;;; it under the terms of the GNU General Public License as published by @@ -54,7 +54,10 @@ ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; (define-class () + ;; The automatically determined split configuration (configuration #:init-value '() #:accessor configuration) + ;; Allow overriding split configuration, takes precedence over configuration + (forced-configuration #:init-value #f #:accessor forced-configuration) (when-moment #:accessor when #:init-keyword #:when) ;; voice-states are states starting with the Split-state or later ;; @@ -197,8 +200,9 @@ Voice-state objects ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; (define-public (recording-group-emulate music odef) - "Interprets music according to odef, but stores all events in a chronological -list, similar to the Recording_group_engraver in 2.8 and earlier" + "Interpret @var{music} according to @var{odef}, but store all events +in a chronological list, similar to the @code{Recording_group_engraver} in +LilyPond version 2.8 and earlier." (let* ((context-list '()) (now-mom (ly:make-moment 0 0)) @@ -256,13 +260,63 @@ list, similar to the Recording_group_engraver in 2.8 and earlier" m)) (define-public (determine-split-list evl1 evl2) - "EVL1 and EVL2 should be ascending" + "@var{evl1} and @var{evl2} should be ascending." (let* ((pc-debug #f) (chord-threshold 8) (voice-state-vec1 (make-voice-states evl1)) (voice-state-vec2 (make-voice-states evl2)) (result (make-split-state voice-state-vec1 voice-state-vec2))) + ;; Go through all moments recursively and check if the events of that + ;; moment contain a part-combine-force-event override. If so, store its + ;; value in the forced-configuration field, which will override. The + ;; previous configuration is used to determine non-terminated settings. + (define (analyse-forced-combine result-idx prev-res) + + (define (get-forced-event x) + (if (ly:in-event-class? x 'part-combine-force-event) + (cons (ly:event-property x 'forced-type) (ly:event-property x 'once)) + #f)) + (define (part-combine-events vs) + (if (not vs) + '() + (filter-map get-forced-event (events vs)))) + ;; end part-combine-events + + ;; forced-result: Take the previous config and analyse whether + ;; any change happened.... Return new once and permanent config + (define (forced-result evt state) + ;; sanity check, evt should always be (new-state . once) + (if (not (and (pair? evt) (pair? state))) + state + (if (cdr evt) + ;; Once-event, leave permanent state unchanged + (cons (car evt) (cdr state)) + ;; permanent change, leave once state unchanged + (cons (car state) (car evt))))) + ;; end forced-combine-result + + ;; body of analyse-forced-combine: + (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)) + ;; result is (once-state permament-state): + (state (fold forced-result (cons 'automatic prev-res) evts)) + ;; Now let once override permanent changes: + (force-state (if (equal? (car state) 'automatic) + (cdr state) + (car state)))) + (set! (forced-configuration (vector-ref result result-idx)) + force-state) + ;; For the next moment, ignore the once override (car stat) + ;; and pass on the permanent override, stored as (cdr state) + (analyse-forced-combine (1+ result-idx) (cdr state))))) + ;; end analyse-forced-combine + + (define (analyse-time-step result-idx) (define (put x . index) "Put the result to X, starting from INDEX backwards. @@ -409,7 +463,7 @@ Only set if not set previously. (previous-voice-state vs))) (define (try-solo type start-idx current-idx) - "Find a maximum stretch that can be marked as solo. Only set + "Find a maximum stretch that can be marked as solo. Only set the mark when there are no spanners active. return next idx to analyse. @@ -444,7 +498,7 @@ the mark when there are no spanners active. start-idx)) (define (analyse-moment result-idx) - "Analyse 'apart starting at RESULT-IDX. Return next index. " + "Analyse 'apart 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)) @@ -488,14 +542,25 @@ the mark when there are no spanners active. (display "***\n") (display result) (display "***\n"))) + + ;; Extract all forced combine strategies, i.e. events inserted by + ;; \partcombine(Apart|Automatic|SoloI|SoloII|Chords)[Once] + ;; They will in the end override the automaically determined ones. + ;; Initial state for both voices is no override + (analyse-forced-combine 0 #f) + ;; Now go through all time steps in a loop and find a combination strategy + ;; based only on the events of that one moment (i.e. neglecting longer + ;; periods of solo/apart, etc.) (analyse-time-step 0) ;; (display result) + ;; Check for unisono or unisilence moments (analyse-a2 0) ;;(display result) (analyse-solo12 0) ;; (display result) (set! result (map - (lambda (x) (cons (when x) (configuration x))) + ;; forced-configuration overrides, if it is set + (lambda (x) (cons (when x) (or (forced-configuration x) (configuration x)))) (vector->list result))) (if #f ;; pc-debug (display result)) @@ -506,10 +571,27 @@ the mark when there are no spanners active. (define-public (add-quotable parser name mus) (let* ((tab (eval 'musicQuotes (current-module))) - (context-list (recording-group-emulate (context-spec-music mus 'Voice) - (ly:parser-lookup parser 'partCombineListener)))) - (if (pair? context-list) - (hash-set! tab name - ;; cdr : skip name string - (list->vector (reverse! (cdar context-list) - '())))))) + (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)) + (context-list (reverse (recording-group-emulate ctx-spec listener))) + (raw-voice (assoc voicename context-list)) + (quote-contents (if (pair? raw-voice) (cdr raw-voice) '()))) + + ;; If the context-specced quoted music does not contain anything, try to + ;; use the first child, i.e. the next in context-list after voicename + ;; That's the case e.g. for \addQuote "x" \relative c \new Voice {...} + (if (null? quote-contents) + (let find-non-empty ((current-tail (member raw-voice context-list))) + ;; if voice has contents, use them, otherwise check next ctx + (cond ((null? current-tail) #f) + ((and (pair? (car current-tail)) + (pair? (cdar current-tail))) + (set! quote-contents (cdar current-tail))) + (else (find-non-empty (cdr current-tail)))))) + + (if (not (null? quote-contents)) + (hash-set! tab name (list->vector (reverse! quote-contents '()))) + (ly:music-warning mus (ly:format (_ "quoted music `~a' is empty") name)))))