source file of the GNU LilyPond music typesetter
- (c) 1997 Han-Wen Nienhuys <hanwen@stack.nl>
+ (c) 1997--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-
#include "music.hh"
-#include "music-list.hh"
-#include "debug.hh"
-MInterval
-Music::time_int() const
+#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
{
- return MInterval (0,0);
+ SCM ifs = get_property ("types");
+
+ return scm_c_memq (k, ifs) != SCM_BOOL_F;
+}
+
+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::print() const
+Music::derived_mark () const
{
-#ifndef NPRINT
- if (! check_debug)
- return ;
- DOUT << name() << "{";
- if (translator_type_str_)
- DOUT << translator_type_str_ << " = " << translator_id_str_;
- do_print();
- DOUT << "}\n";
-#endif
+ scm_gc_mark (length_callback_);
+ scm_gc_mark (start_callback_);
+}
+
+SCM
+Music::copy_mutable_properties () const
+{
+ return ly_music_deep_copy (mutable_property_alist_);
}
void
-Music::transpose (Melodic_req 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)
+{
+ length_callback_ = m.length_callback_;
+ start_callback_ = m.start_callback_;
+
+ /// why?
+ set_spot (*m.origin ());
+}
+
+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::translate (Moment)
+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::do_print() const
+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 ()));
+ }
-IMPLEMENT_IS_TYPE_B(Music);
+ 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;
-
-Music::Music()
+ 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)
{
- parent_music_l_ =0;
+ Stream_event *ev = to_event ();
+ c->event_source ()->broadcast (ev);
+ ev->unprotect ();
}
-IMPLEMENT_IS_TYPE_B1(Change_reg,Music)
+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<Music*> (unsmob_prob (m));
+}
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