source file of the GNU LilyPond music typesetter
- (c) 1997--1999 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
-
#include "music.hh"
-#include "music-list.hh"
-#include "debug.hh"
-#include "musical-pitch.hh"
+#include "music-sequence.hh"
+#include "duration.hh"
+#include "input-smob.hh"
+#include "ly-smobs.icc"
+#include "main.hh"
+#include "pitch.hh"
+#include "score.hh"
+#include "warn.hh"
+
+/*
+ Music is anything that has duration and supports both time compression
+ and transposition.
-Music::Music()
+ 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)
+String
+Music::name () const
{
+ SCM nm = get_property ("name");
+ if (scm_is_symbol (nm))
+ return ly_symbol2string (nm);
+ else
+ return "Music";
}
-void
-Music::do_print() const
+Music::Music (SCM init)
{
+ self_scm_ = SCM_EOL;
+ immutable_property_alist_ = init;
+ mutable_property_alist_ = SCM_EOL;
+ smobify_self ();
+
+ length_callback_ = get_property ("length-callback");
+ if (!ly_is_procedure (length_callback_))
+ length_callback_ = duration_length_callback_proc;
+
+ start_callback_ = get_property ("start-callback");
+}
+
+Music::Music (Music const &m)
+{
+ immutable_property_alist_ = m.immutable_property_alist_;
+ mutable_property_alist_ = SCM_EOL;
+ self_scm_ = SCM_EOL;
+
+ /* First we smobify_self, then we copy over the stuff. If we don't,
+ stack vars that hold the copy might be optimized away, meaning
+ that they won't be protected from GC. */
+ smobify_self ();
+ mutable_property_alist_ = ly_music_deep_copy (m.mutable_property_alist_);
+ length_callback_ = m.length_callback_;
+ start_callback_ = m.start_callback_;
+ set_spot (*m.origin ());
+}
+
+Music::~Music ()
+{
+}
+
+SCM
+Music::get_property_alist (bool m) const
+{
+ return (m) ? mutable_property_alist_ : immutable_property_alist_;
+}
+
+SCM
+Music::mark_smob (SCM m)
+{
+ Music *mus = (Music *) SCM_CELL_WORD_1 (m);
+ scm_gc_mark (mus->immutable_property_alist_);
+ return mus->mutable_property_alist_;
}
Moment
-Music::length_mom () const
+Music::get_length () const
{
- return 0;
+ 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::print() const
+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);
+ }
+}
+
+int
+Music::print_smob (SCM s, SCM p, scm_print_state*)
+{
+ scm_puts ("#<Music ", p);
+ Music *m = unsmob_music (s);
+
+ SCM nm = m->get_property ("name");
+ if (scm_is_symbol (nm) || scm_is_string (nm))
+ scm_display (nm, p);
+ else
+ scm_puts ("Music", p);
+
+ /* Printing properties takes a lot of time, especially during backtraces.
+ For inspecting, it is better to explicitly use an inspection
+ function. */
+
+ scm_puts (">", p);
+ return 1;
+}
+
+Pitch
+Music::generic_to_relative_octave (Pitch last)
{
-#ifndef NPRINT
- if (! flower_dstream)
- return ;
- DEBUG_OUT << classname(this) << "{";
+ 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 ());
+}
+
+void
+Music::transpose (Pitch delta)
+{
+ if (to_boolean (get_property ("untransposable")))
+ return;
+
+ for (SCM s = this->get_property_alist (true); scm_is_pair (s); s = scm_cdr (s))
+ {
+ SCM entry = scm_car (s);
+ SCM val = scm_cdr (entry);
+
+ if (Pitch *p = unsmob_pitch (val))
+ {
+ Pitch transposed = p->transposed (delta);
+ scm_set_cdr_x (entry, transposed.smobbed_copy ());
+
+ if (abs (transposed.get_alteration ()) > DOUBLE_SHARP)
+ {
+ warning (_f ("transposition by %s makes alteration larger than double",
+ delta.to_string ()));
+ }
+ }
+ }
+
+ SCM elt = get_property ("element");
+
+ if (Music *m = unsmob_music (elt))
+ m->transpose (delta);
+
+ transpose_music_list (get_property ("elements"), delta);
+
/*
- if (translator_type_str_.length_i ())
- DEBUG_OUT << translator_type_str_ << " = " << translator_id_str_;
+ UGH - how do this more generically?
*/
- do_print();
- DEBUG_OUT << "}\n";
-#endif
+ SCM pa = get_property ("pitch-alist");
+ if (scm_is_pair (pa))
+ set_property ("pitch-alist", ly_transpose_key_alist (pa, delta.smobbed_copy ()));
}
-Musical_pitch
-Music::to_relative_octave (Musical_pitch m)
+IMPLEMENT_TYPE_P (Music, "ly:music?");
+IMPLEMENT_SMOBS (Music);
+IMPLEMENT_DEFAULT_EQUAL_P (Music);
+
+SCM
+Music::internal_get_property (SCM sym) const
{
- return m;
+ SCM s = scm_sloppy_assq (sym, mutable_property_alist_);
+ if (s != SCM_BOOL_F)
+ return scm_cdr (s);
+
+ s = scm_sloppy_assq (sym, immutable_property_alist_);
+ return (s == SCM_BOOL_F) ? SCM_EOL : scm_cdr (s);
}
+SCM
+Music::internal_get_object (SCM s) const
+{
+ return internal_get_property (s);
+}
+
+void
+Music::internal_set_object (SCM s, SCM v)
+{
+ return internal_set_property (s, v);
+}
+
+void
+Music::internal_set_property (SCM s, SCM v)
+{
+ if (do_internal_type_checking_global)
+ if (!type_check_assignment (s, v, ly_symbol2scm ("music-type?")))
+ abort ();
+
+ mutable_property_alist_ = scm_assq_set_x (mutable_property_alist_, s, v);
+}
void
-Music::transpose (Musical_pitch )
+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;
+}
+
+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 ();
+}
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