X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmusic.cc;h=77c8f34335629a5c75c4d2e7e9614976e95e259e;hb=489ffb188ae02237fa0a22763d08841a669dc2a4;hp=1c2deb27977c3901025fe378338275fb4ecee69e;hpb=8aad615ea7bb31f49a0c2afc21eea5ff5de20437;p=lilypond.git diff --git a/lily/music.cc b/lily/music.cc index 1c2deb2797..77c8f34335 100644 --- a/lily/music.cc +++ b/lily/music.cc @@ -3,57 +3,325 @@ source file of the GNU LilyPond music typesetter - (c) 1997--1999 Han-Wen Nienhuys + (c) 1997--2007 Han-Wen Nienhuys */ - #include "music.hh" -#include "music-list.hh" -#include "debug.hh" -#include "musical-pitch.hh" -Music::Music() +#include "context.hh" +#include "dispatcher.hh" +#include "duration.hh" +#include "input.hh" +#include "international.hh" +#include "ly-smobs.icc" +#include "main.hh" +#include "music-sequence.hh" +#include "score.hh" +#include "warn.hh" + +/* + Music is anything that has (possibly zero) duration and supports + both time compression and transposition. + + In Lily, everything that can be thought to have a length and a pitch + (which has a duration which can be transposed) is considered "music". +*/ +bool +Music::internal_is_music_type (SCM k) const { + SCM ifs = get_property ("types"); + + return scm_c_memq (k, ifs) != SCM_BOOL_F; } -void -Music::compress (Moment) +Music::Music (SCM init) + : Prob (ly_symbol2scm ("Music"), init) { + length_callback_ = SCM_EOL; + start_callback_ = SCM_EOL; + + length_callback_ = get_property ("length-callback"); + if (!ly_is_procedure (length_callback_)) + length_callback_ = duration_length_callback_proc; + + start_callback_ = get_property ("start-callback"); } void -Music::do_print() const +Music::derived_mark () const { + scm_gc_mark (length_callback_); + scm_gc_mark (start_callback_); } -Moment -Music::length_mom () const +SCM +Music::copy_mutable_properties () const { - return 0; + return ly_music_deep_copy (mutable_property_alist_); } void -Music::print() const +Music::type_check_assignment (SCM s, SCM v) const +{ + ::type_check_assignment (s, v, ly_symbol2scm ("music-type?")); +} + +Music::Music (Music const &m) + : Prob (m) { -#ifndef NPRINT - if (! check_debug) - return ; - DOUT << classname(this) << "{"; - if (translator_type_str_.length_i ()) - DOUT << translator_type_str_ << " = " << translator_id_str_; - do_print(); - DOUT << "}\n"; -#endif + length_callback_ = m.length_callback_; + start_callback_ = m.start_callback_; + + /// why? + set_spot (*m.origin ()); } -Musical_pitch -Music::to_relative_octave (Musical_pitch m) +Moment +Music::get_length () const { + SCM lst = get_property ("length"); + if (unsmob_moment (lst)) + return *unsmob_moment (lst); + + if (ly_is_procedure (length_callback_)) + { + SCM res = scm_call_1 (length_callback_, self_scm ()); + return *unsmob_moment (res); + } + + return Moment (0); +} + +Moment +Music::start_mom () const +{ + SCM lst = start_callback_; + if (ly_is_procedure (lst)) + { + SCM res = scm_call_1 (lst, self_scm ()); + return *unsmob_moment (res); + } + + Moment m; return m; } void -Music::transpose (Musical_pitch ) +print_alist (SCM a, SCM port) +{ + /* SCM_EOL -> catch malformed lists. */ + for (SCM s = a; scm_is_pair (s); s = scm_cdr (s)) + { + scm_display (scm_caar (s), port); + scm_puts (" = ", port); + scm_write (scm_cdar (s), port); + scm_puts ("\n", port); + } +} + + +Pitch +Music::generic_to_relative_octave (Pitch last) +{ + SCM elt = get_property ("element"); + Pitch *old_pit = unsmob_pitch (get_property ("pitch")); + if (old_pit) + { + Pitch new_pit = *old_pit; + new_pit = new_pit.to_relative_octave (last); + + SCM check = get_property ("absolute-octave"); + if (scm_is_number (check) + && new_pit.get_octave () != scm_to_int (check)) + { + Pitch expected_pit (scm_to_int (check), + new_pit.get_notename (), + new_pit.get_alteration ()); + origin ()->warning (_f ("octave check failed; expected \"%s\", found: \"%s\"", + expected_pit.to_string (), + new_pit.to_string ())); + new_pit = expected_pit; + } + + set_property ("pitch", new_pit.smobbed_copy ()); + + last = new_pit; + } + + if (Music *m = unsmob_music (elt)) + last = m->to_relative_octave (last); + + last = music_list_to_relative (get_property ("elements"), last, false); + return last; +} + +Pitch +Music::to_relative_octave (Pitch last) +{ + SCM callback = get_property ("to-relative-callback"); + if (ly_is_procedure (callback)) + { + Pitch *p = unsmob_pitch (scm_call_2 (callback, self_scm (), last.smobbed_copy ())); + return *p; + } + + return generic_to_relative_octave (last); +} + +void +Music::compress (Moment factor) +{ + SCM elt = get_property ("element"); + + if (Music *m = unsmob_music (elt)) + m->compress (factor); + + compress_music_list (get_property ("elements"), factor); + Duration *d = unsmob_duration (get_property ("duration")); + if (d) + set_property ("duration", d->compressed (factor.main_part_).smobbed_copy ()); +} + +/* + This mutates alist. Hence, make sure that it is not shared +*/ +void +transpose_mutable (SCM alist, Pitch delta) +{ + for (SCM s = alist; scm_is_pair (s); s = scm_cdr (s)) + { + SCM entry = scm_car (s); + SCM prop = scm_car (entry); + SCM val = scm_cdr (entry); + SCM new_val = val; + + if (Pitch *p = unsmob_pitch (val)) + { + Pitch transposed = p->transposed (delta); + if (transposed.get_alteration ().abs () > Rational (1,1)) + { + warning (_f ("transposition by %s makes alteration larger than double", + delta.to_string ())); + } + + new_val = transposed.smobbed_copy (); + } + else if (prop == ly_symbol2scm ("element")) + { + if (Music *m = unsmob_music (val)) + m->transpose (delta); + } + else if (prop == ly_symbol2scm ("elements")) + transpose_music_list (val, delta); + else if (prop == ly_symbol2scm ("pitch-alist") && + scm_is_pair (val)) + new_val = ly_transpose_key_alist (val, delta.smobbed_copy ()); + + if (val != new_val) + scm_set_cdr_x (entry , new_val); + } +} + +void +Music::transpose (Pitch delta) +{ + if (to_boolean (get_property ("untransposable"))) + return; + + transpose_mutable (mutable_property_alist_, delta); +} + +void +Music::set_spot (Input ip) +{ + set_property ("origin", make_input (ip)); +} + +Input * +Music::origin () const +{ + Input *ip = unsmob_input (get_property ("origin")); + return ip ? ip : &dummy_input_global; +} + +/* + ES TODO: This method should probably be reworked or junked. +*/ +Stream_event * +Music::to_event () const +{ + SCM class_name = ly_camel_case_2_lisp_identifier (get_property ("name")); + + // catch programming mistakes. + if (!internal_is_music_type (class_name)) + { + programming_error ("Not a music type"); + } + + Stream_event *e = new Stream_event (class_name, mutable_property_alist_); + Moment length = get_length (); + if (length.to_bool ()) + e->set_property ("length", length.smobbed_copy ()); + + // articulations as events. + SCM art_mus = e->get_property ("articulations"); + if (scm_is_pair (art_mus)) + { + SCM art_ev = SCM_EOL; + for (; scm_is_pair (art_mus); art_mus = scm_cdr (art_mus)) + { + Music *m = unsmob_music (scm_car (art_mus)); + SCM ev = m ? m->to_event ()->unprotect () : scm_car (art_mus); + art_ev = scm_cons (ev, art_ev); + } + e->set_property ("articulations", scm_reverse_x (art_ev, SCM_EOL)); + } + + /* + ES TODO: This is a temporary fix. Stream_events should not be + aware of music. + */ + e->set_property ("music-cause", self_scm ()); + + return e; +} + +void +Music::send_to_context (Context *c) +{ + Stream_event *ev = to_event (); + c->event_source ()->broadcast (ev); + ev->unprotect (); +} + +Music * +make_music_by_name (SCM sym) +{ + SCM make_music_proc = ly_lily_module_constant ("make-music"); + SCM rv = scm_call_1 (make_music_proc, sym); + + /* UGH. */ + Music *m = unsmob_music (rv); + m->protect (); + return m; +} + +MAKE_SCHEME_CALLBACK (Music, duration_length_callback, 1); +SCM +Music::duration_length_callback (SCM m) +{ + Music *me = unsmob_music (m); + Duration *d = unsmob_duration (me->get_property ("duration")); + + Moment mom; + if (d) + mom = d->get_length (); + return mom.smobbed_copy (); +} + +Music * +unsmob_music (SCM m) { + return dynamic_cast (unsmob_prob (m)); }