-//
-// midi-def.cc -- implement midi output
-//
-// source file of the GNU LilyPond music typesetter
-//
-// (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
+/*
+ midi-def.cc -- implement Midi_def
+ source file of the GNU LilyPond music typesetter
+
+ (c) 1997--2002 Jan Nieuwenhuizen <janneke@gnu.org>
+
+*/
#include <math.h>
#include "misc.hh"
#include "midi-def.hh"
+#include "performance.hh"
#include "debug.hh"
+#include "scope.hh"
-// classes, alphasorted
-// statics
-// constructors
-// destructor
-// routines, alphasorted
-
-// statics Midi_def
-// ugh
-int Midi_def::den_i_s = 4;
-int Midi_def::num_i_s = 4;
-
-Midi_def::Midi_def()
+Midi_def::Midi_def ()
{
- set_tempo( Moment( 1, 4 ), 60 );
- outfile_str_ = "lelie.midi";
+ // ugh
+ set_tempo (Moment (Rational (1, 4)), 60);
}
-Midi_def::Midi_def( Midi_def const& midi_c_r )
+int
+Midi_def::get_tempo_i (Moment one_beat_mom)
{
- whole_seconds_f_ = midi_c_r.whole_seconds_f_;
- outfile_str_ = midi_c_r.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 moment )
+void
+Midi_def::set_tempo (Moment one_beat_mom, int beats_per_minute_i)
{
- if (!moment)
- return 0;
-
- return Moment( whole_seconds_f_ ) * moment;
-}
+ Moment beats_per_second = Moment (beats_per_minute_i) / Moment (60);
-int
-Midi_def::get_tempo_i( Moment moment )
-{
- return Moment( whole_seconds_f_ ) * Moment( 60 ) * moment;
+ Moment m = Moment (1)/Moment (beats_per_second * one_beat_mom);
+ scope_p_->set ("whole-in-seconds", m.smobbed_copy ());
}
-void
-Midi_def::print() const
+
+int Midi_def::score_count_i_=0;
+
+int
+Midi_def::get_next_score_count () const
{
-#ifndef NPRINT
- mtor << "Midi {4/min: " << Real( 60 ) / ( whole_seconds_f_ * 4 );
- mtor << "out: " << outfile_str_;
- mtor << "}\n";
-#endif
+ return score_count_i_++;
}
void
-Midi_def::set_tempo( Moment moment, int count_per_minute_i )
+Midi_def::reset_score_count ()
{
- whole_seconds_f_ = Moment( count_per_minute_i ) / Moment( 60 ) / moment;
+ score_count_i_ = 0;
}