/*
- music-scheme.cc -- implement
+ music-scheme.cc -- implement Music bindings
source file of the GNU LilyPond music typesetter
(c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
-
*/
+#include "duration.hh"
+#include "warn.hh"
#include "music.hh"
#include "pitch.hh"
LY_DEFINE (ly_music_length, "ly:music-length",
1, 0, 0, (SCM mus),
- "Get the length of music expression @var{mus}, and return as a @code{Moment} object.")
+ "Get the length of music expression @var{mus}, and return as a @code{Moment} object.")
{
Music *sc = unsmob_music (mus);
SCM_ASSERT_TYPE (sc, mus, SCM_ARG1, __FUNCTION__, "music");
}
LY_DEFINE (ly_music_property,
- "ly:music-property", 2, 0, 0, (SCM mus, SCM sym),
- "Get the property @var{sym} of music expression @var{mus}.\n"
- "If @var{sym} is undefined, return @code{' ()}.\n" )
+ "ly:music-property", 2, 0, 0, (SCM mus, SCM sym),
+ "Get the property @var{sym} of music expression @var{mus}.\n"
+ "If @var{sym} is undefined, return @code{' ()}.\n")
{
- Music * sc = unsmob_music (mus);
+ Music *sc = unsmob_music (mus);
SCM_ASSERT_TYPE (sc, mus, SCM_ARG1, __FUNCTION__, "music");
SCM_ASSERT_TYPE (scm_is_symbol (sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
}
LY_DEFINE (ly_music_set_property, "ly:music-set-property!",
- 3, 0, 0, (SCM mus, SCM sym, SCM val),
- "Set property @var{sym} in music expression @var{mus} to @var{val}.")
+ 3, 0, 0, (SCM mus, SCM sym, SCM val),
+ "Set property @var{sym} in music expression @var{mus} to @var{val}.")
{
- Music * sc = unsmob_music (mus);
+ Music *sc = unsmob_music (mus);
SCM_ASSERT_TYPE (sc, mus, SCM_ARG1, __FUNCTION__, "music");
SCM_ASSERT_TYPE (scm_is_symbol (sym), sym, SCM_ARG2, __FUNCTION__, "symbol");
"Return the name of @var{music}.")
{
Music *m = unsmob_music (mus);
- SCM_ASSERT_TYPE (m, mus, SCM_ARG1, __FUNCTION__ ,"music");
+ SCM_ASSERT_TYPE (m, mus, SCM_ARG1, __FUNCTION__, "music");
char const *nm = classname (m);
return scm_makfrom0str (nm);
/* todo: property args */
LY_DEFINE (ly_extended_make_music, "ly:make-bare-music",
2, 0, 0, (SCM type, SCM props),
- "Make a C++ music object of type @var{type}, initialize with\n"
- "@var{props}. \n\n"
- ""
- "This function is for internal use, and is only called by "
- "@code{make-music}, which is the preferred interface "
- "for creating music objects. "
- )
+ "Make a C++ music object of type @var{type}, initialize with\n"
+ "@var{props}. \n\n"
+ ""
+ "This function is for internal use, and is only called by "
+ "@code{make-music}, which is the preferred interface "
+ "for creating music objects. ")
{
SCM_ASSERT_TYPE (scm_is_string (type), type, SCM_ARG1, __FUNCTION__, "string");
- SCM s = make_music (ly_scm2string (type))->self_scm ();
- unsmob_music (s)->immutable_property_alist_ = props;
+ SCM s = make_music (ly_scm2string (type), props)->self_scm ();
scm_gc_unprotect_object (s);
return s;
}
/* todo: property args */
LY_DEFINE (ly_music_mutable_properties, "ly:music-mutable-properties",
- 1, 0, 0, (SCM mus),
- "Return an alist containing the mutable properties of @var{mus}.\n"
- "The immutable properties are not available, since "
- "they are constant and initialized by the "
+ 1, 0, 0, (SCM mus),
+ "Return an alist containing the mutable properties of @var{mus}.\n"
+ "The immutable properties are not available, since "
+ "they are constant and initialized by the "
"@code{make-music} function.\n")
{
Music *m = unsmob_music (mus);
return m->get_property_alist (true);
}
-LY_DEFINE (ly_music_list_p,"ly:music-list?",
+LY_DEFINE (ly_music_list_p, "ly:music-list?",
1, 0, 0, (SCM lst),
"Type predicate: return true if @var{lst} is a list "
"of music objects.")
}
LY_DEFINE (ly_music_deep_copy, "ly:music-deep-copy",
- 1, 0, 0, (SCM m),
- "Copy @var{m} and all sub expressions of @var{m}")
+ 1, 0, 0, (SCM m),
+ "Copy @var{m} and all sub expressions of @var{m}")
{
SCM copy = m;
if (unsmob_music (m))
}
else if (scm_is_pair (m))
copy = scm_cons (ly_music_deep_copy (scm_car (m)),
- ly_music_deep_copy (scm_cdr (m)));
+ ly_music_deep_copy (scm_cdr (m)));
return copy;
}
LY_DEFINE (ly_music_transpose, "ly:music-transpose",
- 2, 0, 0, (SCM m, SCM p),
- "Transpose @var{m} such that central C is mapped to @var{p}. "
- "Return @var{m}.")
+ 2, 0, 0, (SCM m, SCM p),
+ "Transpose @var{m} such that central C is mapped to @var{p}. "
+ "Return @var{m}.")
{
- Music * sc = unsmob_music (m);
- Pitch * sp = unsmob_pitch (p);
+ Music *sc = unsmob_music (m);
+ Pitch *sp = unsmob_pitch (p);
SCM_ASSERT_TYPE (sc, m, SCM_ARG1, __FUNCTION__, "music");
SCM_ASSERT_TYPE (sp, p, SCM_ARG2, __FUNCTION__, "pitch");
/*
TODO: should take moment factor?
- */
+*/
LY_DEFINE (ly_music_compress, "ly:music-compress",
- 2, 0, 0, (SCM m, SCM factor),
- "Compress music object @var{m} by moment @var{factor}."
- )
+ 2, 0, 0, (SCM m, SCM factor),
+ "Compress music object @var{m} by moment @var{factor}.")
{
- Music * sc = unsmob_music (m);
+ Music *sc = unsmob_music (m);
SCM_ASSERT_TYPE (sc, m, SCM_ARG1, __FUNCTION__, "music");
SCM_ASSERT_TYPE (unsmob_moment (factor), factor, SCM_ARG2, __FUNCTION__, "moment");
-
+
sc->compress (*unsmob_moment (factor));
return sc->self_scm ();
}
+LY_DEFINE (ly_music_duration_length, "ly:music-duration-length", 1, 0, 0,
+ (SCM mus),
+ "Extract the duration field from @var{mus}, and return the length.")
+{
+ Music *m = unsmob_music (mus);
+ SCM_ASSERT_TYPE (m, mus, SCM_ARG1, __FUNCTION__, "Music");
+
+ Duration *d = unsmob_duration (m->get_property ("duration"));
+ Moment len;
+
+ if (d)
+ len = d->get_length ();
+ else
+ programming_error ("music has no duration");
+ return len.smobbed_copy ();
+}
+
+LY_DEFINE (ly_music_duration_compress, "ly:music-duration-compress", 2, 0, 0,
+ (SCM mus, SCM fact),
+ "Compress @var{mus} by factor @var{fact}, which is a @code{Moment}.")
+{
+ Music *m = unsmob_music (mus);
+ Moment *f = unsmob_moment (fact);
+ SCM_ASSERT_TYPE (m, mus, SCM_ARG1, __FUNCTION__, "Music");
+ SCM_ASSERT_TYPE (f, fact, SCM_ARG2, __FUNCTION__, "Moment");
+
+ Duration *d = unsmob_duration (m->get_property ("duration"));
+ if (d)
+ m->set_property ("duration", d->compressed (f->main_part_).smobbed_copy ());
+ return SCM_UNSPECIFIED;
+}
+
+/*
+ This is hairy, since the scale in a key-change event may contain
+ octaveless notes.
+
+
+ TODO: this should use ly:pitch.
+*/
+LY_DEFINE (ly_transpose_key_alist, "ly:transpose-key-alist",
+ 2, 0, 0, (SCM l, SCM pit),
+ "Make a new key alist of @var{l} transposed by pitch @var{pit}")
+{
+ SCM newlist = SCM_EOL;
+ Pitch *p = unsmob_pitch (pit);
+
+ for (SCM s = l; scm_is_pair (s); s = scm_cdr (s))
+ {
+ SCM key = scm_caar (s);
+ SCM alter = scm_cdar (s);
+ if (scm_is_pair (key))
+ {
+ Pitch orig (scm_to_int (scm_car (key)),
+ scm_to_int (scm_cdr (key)),
+ scm_to_int (alter));
+
+ orig = orig.transposed (*p);
+
+ SCM key = scm_cons (scm_int2num (orig.get_octave ()),
+ scm_int2num (orig.get_notename ()));
+
+ newlist = scm_cons (scm_cons (key, scm_int2num (orig.get_alteration ())),
+ newlist);
+ }
+ else if (scm_is_number (key))
+ {
+ Pitch orig (0, scm_to_int (key), scm_to_int (alter));
+ orig = orig.transposed (*p);
+
+ key = scm_int2num (orig.get_notename ());
+ alter = scm_int2num (orig.get_alteration ());
+ newlist = scm_cons (scm_cons (key, alter), newlist);
+ }
+ }
+ return scm_reverse_x (newlist, SCM_EOL);
+}
projects / lilypond.git / blobdiff