source file of the GNU LilyPond music typesetter
- (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
+ (c) 1997--2002 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include <math.h>
#include "misc.hh"
#include "midi-def.hh"
-#include "translator.hh"
#include "performance.hh"
-#include "assoc-iter.hh"
-#include "score-performer.hh"
#include "debug.hh"
+#include "scope.hh"
-// classes, alphasorted
-// statics
-// constructors
-// destructor
-// routines, alphasorted
-
-Midi_def::Midi_def()
+Midi_def::Midi_def ()
{
- outfile_str_ = "";
// ugh
- set_tempo (Moment (1, 4), 60);
+ set_tempo (Moment (Rational (1, 4)), 60);
}
-Midi_def::Midi_def (Midi_def const& s)
- : Music_output_def (s)
+int
+Midi_def::get_tempo_i (Moment one_beat_mom)
{
- whole_seconds_f_ = s.whole_seconds_f_;
- outfile_str_ = s.outfile_str_;
-}
+ SCM wis = ly_symbol2scm ("whole-in-seconds");
+ Moment *w = unsmob_moment (scope_p_->scm_elem (wis));
-Midi_def::~Midi_def()
-{
+ Moment wholes_per_min = Moment (60);
+ if (!w)
+ {
+ programming_error ("wholes-in-seconds not set.");
+ wholes_per_min /= 4;
+ }
+ else
+ {
+ wholes_per_min /= *w;
+ }
+
+ int beats_per_min = int ((wholes_per_min / one_beat_mom).main_part_);
+ return int (beats_per_min);
}
-Real
-Midi_def::duration_to_seconds_f (Moment mom)
+void
+Midi_def::set_tempo (Moment one_beat_mom, int beats_per_minute_i)
{
- if (!mom)
- return 0;
-
- return Moment (whole_seconds_f_) * mom;
+ Moment beats_per_second = Moment (beats_per_minute_i) / Moment (60);
+
+ Moment m = Moment (1)/Moment (beats_per_second * one_beat_mom);
+ scope_p_->set ("whole-in-seconds", m.smobbed_copy ());
}
+int Midi_def::score_count_i_=0;
int
-Midi_def::get_tempo_i (Moment moment)
+Midi_def::get_next_score_count () const
{
- return Moment (whole_seconds_f_) * Moment (60) * moment;
+ return score_count_i_++;
}
void
-Midi_def::print() const
+Midi_def::reset_score_count ()
{
-#ifndef NPRINT
- DOUT << "Midi {";
- DOUT << "4/min: " << Real (60) / (whole_seconds_f_ * 4);
- DOUT << "out: " << outfile_str_;
- DOUT << "}\n";
-#endif
+ score_count_i_ = 0;
}
-
-
-void
-Midi_def::set_tempo (Moment moment, int count_per_minute_i)
-{
- whole_seconds_f_ = Moment (count_per_minute_i) / Moment (60) / moment;
-}
-
-IMPLEMENT_IS_TYPE_B1( Midi_def, Music_output_def);