* lily/ambitus-engraver.cc (create_ambitus): change name to

[lilypond.git] / lily / midi-def.cc

diff --git a/lily/midi-def.cc b/lily/midi-def.cc
index 5e76d11805bda19dd57052a0f57671f0e779e7dd..d30e94e599a37407ce6961c735ced9e4d28ae346 100644 (file)
--- a/lily/midi-def.cc
+++ b/lily/midi-def.cc
@@ -1,112 +1,51 @@
-//
-// 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 output def functions
 
-#include <math.h>
-#include "misc.hh"
-#include "midi-def.hh"
-#include "input-translator.hh"
-#include "performer-group-performer.hh"
-#include "assoc-iter.hh"
-
-#include "debug.hh"
-
-// classes, alphasorted
-//     statics
-//     constructors
-//     destructor
-//     routines, alphasorted
+  source file of the GNU LilyPond music typesetter
 
-// statics Midi_def
-// ugh
-int Midi_def::den_i_s = 4;
-int Midi_def::num_i_s = 4;
+  (c) 1997--2004 Jan Nieuwenhuizen <janneke@gnu.org>
 
-Midi_def::Midi_def()
-{
-    outfile_str_ = "lelie.midi"; 
-    itrans_p_ = 0;
-    real_vars_p_ = new Assoc<String,Real>;
-    // ugh
-    set_tempo( Moment( 1, 4 ), 60 );
-}
+*/
+#include <math.h>
 
-Midi_def::Midi_def( Midi_def const& s )
-{
-    whole_seconds_f_ = s.whole_seconds_f_;
-    itrans_p_ = s.itrans_p_ ? new Input_translator( *s.itrans_p_ ) : 0;
-    real_vars_p_ = new Assoc<String,Real> ( *s.real_vars_p_ );
-    outfile_str_ = s.outfile_str_;
-}
+#include "misc.hh"
+#include "output-def.hh"
+#include "moment.hh"
+#include "warn.hh"
+#include "scm-hash.hh"
 
-Midi_def::~Midi_def()
-{
-    delete itrans_p_;
-    delete real_vars_p_;
-}
 
-Real
-Midi_def::duration_to_seconds_f( Moment mom )
-{
-    if ( !mom )
-       return 0;
-    
-    return Moment( whole_seconds_f_ ) * mom;
-}
-
-Global_translator*
-Midi_def::get_global_translator_p() const
-{
-    return  itrans_p_->get_group_performer_p()->global_l();
-}
-
-Real
-Midi_def::get_var( String s ) const
-{
-    if ( !real_vars_p_->elt_b( s ) )
-       error ( "unknown midi variable `"  + s + "'" );
-    return real_vars_p_->elem( s );
-}
 
 int
-Midi_def::get_tempo_i( Moment moment )
+get_tempo (Output_def * def,
+          Moment one_beat_mom)
 {
-    return Moment( whole_seconds_f_ ) * Moment( 60 ) * moment;
-}
+  SCM wis  = ly_symbol2scm ("whole-in-seconds");
+  Moment *w = unsmob_moment (def->lookup_variable (wis));
 
-void
-Midi_def::print() const
-{
-#ifndef NPRINT
-    mtor << "Midi {";
-    mtor << "4/min: " << Real( 60 ) / ( whole_seconds_f_ * 4 );
-    mtor << "out: " << outfile_str_;
-    for (Assoc_iter<String,Real> i( *real_vars_p_ ); i.ok(); i++) {
-       mtor << i.key() << "= " << i.val() << "\n";
+  Moment wholes_per_min = Moment (60);
+  if (!w)
+    {
+      programming_error  ("wholes-in-seconds not set.");
+      wholes_per_min /= 4;
     }
-    mtor << "}\n";
-#endif
-}
-
-void
-Midi_def::set( Input_translator* itrans_p )
-{
-    delete itrans_p_;
-    itrans_p_ = itrans_p;
+  else
+    {
+      wholes_per_min /= *w; 
+    }
+  
+  int beats_per_min =  int ((wholes_per_min / one_beat_mom).main_part_);
+  return int (beats_per_min);
 }
 
 void
-Midi_def::set_tempo( Moment moment, int count_per_minute_i )
+set_tempo (Output_def * def,
+          Moment one_beat_mom,
+          int beats_per_minute_i)
 {
-    whole_seconds_f_ = Moment( count_per_minute_i ) / Moment( 60 ) / moment;
-}
+  Moment beats_per_second = Moment (beats_per_minute_i) / Moment (60);
 
-void
-Midi_def::set_var( String s, Real r )
-{
-   real_vars_p_->elem( s ) = r;
+  Moment m = Moment (1)/Moment (beats_per_second * one_beat_mom);
+  def->set_variable (ly_symbol2scm ("whole-in-seconds"), m.smobbed_copy ());
 }