source file of the GNU LilyPond music typesetter
- (c) 1997--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+ (c) 1997--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
*/
#include "music.hh"
/*
Music is anything that has 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",
+ (which has a duration which can be transposed) is considered "music",
*/
bool
Music::internal_is_music_type (SCM k) const
{
SCM nm = get_property ("name");
if (scm_is_symbol (nm))
- {
- return ly_symbol2string (nm);
- }
+ return ly_symbol2string (nm);
else
- {
- return classname (this);
- }
+ return "Music";
}
Music::Music (SCM init)
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");
}
{
}
-ADD_MUSIC (Music);
-
SCM
Music::get_property_alist (bool m) const
{
SCM
Music::mark_smob (SCM m)
{
- Music *mus = (Music*) SCM_CELL_WORD_1 (m);
+ Music *mus = (Music *) SCM_CELL_WORD_1 (m);
scm_gc_mark (mus->immutable_property_alist_);
- scm_gc_mark (mus->mutable_property_alist_);
- return SCM_EOL;
+ return mus->mutable_property_alist_;
}
Moment
if (unsmob_moment (lst))
return *unsmob_moment (lst);
- if (ly_c_procedure_p (length_callback_))
+ if (ly_is_procedure (length_callback_))
{
SCM res = scm_call_1 (length_callback_, self_scm ());
return *unsmob_moment (res);
}
- return Moment(0);
+ return Moment (0);
}
Moment
Music::start_mom () const
{
- SCM lst = get_property ("start-callback");
- if (ly_c_procedure_p (lst))
+ SCM lst = start_callback_;
+ if (ly_is_procedure (lst))
{
SCM res = scm_call_1 (lst, self_scm ());
return *unsmob_moment (res);
Music::print_smob (SCM s, SCM p, scm_print_state*)
{
scm_puts ("#<Music ", p);
- Music* m = unsmob_music (s);
+ 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 (classname (m),p);
+ 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);
+ scm_puts (">", p);
return 1;
}
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))
+ 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.to_string ()));
new_pit = expected_pit;
}
-
+
set_property ("pitch", new_pit.smobbed_copy ());
-
+
last = new_pit;
}
Music::to_relative_octave (Pitch last)
{
SCM callback = get_property ("to-relative-callback");
- if (ly_c_procedure_p (callback))
+ if (ly_is_procedure (callback))
{
- Pitch * p = unsmob_pitch (scm_call_2 (callback, self_scm(), last.smobbed_copy ()));
+ Pitch *p = unsmob_pitch (scm_call_2 (callback, self_scm (), last.smobbed_copy ()));
return *p;
}
m->compress (factor);
compress_music_list (get_property ("elements"), factor);
- Duration *d = unsmob_duration (get_property ("duration"));
+ Duration *d = unsmob_duration (get_property ("duration"));
if (d)
- set_property ("duration", d ->compressed (factor.main_part_).smobbed_copy ());
+ set_property ("duration", d->compressed (factor.main_part_).smobbed_copy ());
}
void
Music::transpose (Pitch delta)
{
if (to_boolean (get_property ("untransposable")))
- return ;
-
+ 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))
+ if (Pitch *p = unsmob_pitch (val))
{
- Pitch transposed = p->transposed (delta);
+ 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",
+ warning (_f ("transposition by %s makes alteration larger than double",
delta.to_string ()));
}
}
}
-
+
SCM elt = get_property ("element");
- if (Music* m = unsmob_music (elt))
+ if (Music *m = unsmob_music (elt))
m->transpose (delta);
transpose_music_list (get_property ("elements"), delta);
/*
- UGH - how do this more generically?
+ UGH - how do this more generically?
*/
SCM pa = get_property ("pitch-alist");
if (scm_is_pair (pa))
- {
- set_property ("pitch-alist", ly_transpose_key_alist (pa, delta.smobbed_copy ()));
- }
-
+ set_property ("pitch-alist", ly_transpose_key_alist (pa, delta.smobbed_copy ()));
}
IMPLEMENT_TYPE_P (Music, "ly:music?");
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)
{
set_property ("origin", make_input (ip));
}
-Input*
+Input *
Music::origin () const
{
Input *ip = unsmob_input (get_property ("origin"));
- return ip ? ip : & dummy_input_global;
+ return ip ? ip : &dummy_input_global;
}
-int
-Music::duration_log () const
-{
- if (is_mus_type ("rhythmic-event"))
- return unsmob_duration (get_property ("duration"))->duration_log ();
- return 0;
-}
-
-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. */
- scm_gc_protect_object (rv);
- return unsmob_music (rv);
+ 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 ();
}