midi2ly/mudela-voice.cc

   1 //
   2 // mudela-voice.cc -- implement Mudela_voice
   3 //
   4 // copyright 1997 Jan Nieuwenhuizen <janneke@gnu.org>
   5
   6 #include "string-convert.hh"
   7 #include "midi2ly-global.hh"
   8 #include "mudela-column.hh"
   9 #include "mudela-item.hh"
  10 #include "mudela-staff.hh"
  11 #include "mudela-stream.hh"
  12 #include "mudela-voice.hh"
  13 #include "mudela-score.hh"
  14
  15 extern Mudela_score* mudela_score_l_g;
  16
  17 Mudela_voice::Mudela_voice (Mudela_staff* mudela_staff_l)
  18 {
  19   mudela_staff_l_ = mudela_staff_l;
  20   last_item_l_ =0;
  21 }
  22
  23 void
  24 Mudela_voice::add_item (Mudela_item* mudela_item_l)
  25 {
  26   last_item_l_  = mudela_item_l;
  27   mudela_item_l_list_.append (new Cons<Mudela_item> (mudela_item_l, 0));
  28 }
  29
  30 /**
  31    analyse pitches to determine clef.
  32  */
  33 String
  34 Mudela_voice::get_clef () const
  35 {
  36   Mudela_note * n =0;
  37
  38   for (Cons<Mudela_item> *cp = mudela_item_l_list_.head_; !n && cp; cp = cp->next_)
  39     {
  40       n = dynamic_cast<Mudela_note*> (cp->car_);
  41     }
  42
  43   if (!n)
  44     return "";
  45
  46   int p = n->pitch_i_;
  47
  48   if (p < 56)
  49     return "\\clef \"bass\";\n";
  50   else if (p > 67)
  51     return "\\clef \"treble\";\n";
  52   else
  53     return "";
  54 }
  55
  56 static int const FAIRLY_LONG_VOICE_i = 6;
  57
  58 void
  59 Mudela_voice::output (Mudela_stream& mudela_stream_r)
  60 {
  61   mudela_stream_r << "{ ";
  62   if (mudela_item_l_list_.size_i () > FAIRLY_LONG_VOICE_i)
  63     mudela_stream_r << '\n';
  64
  65
  66   mudela_stream_r << get_clef () << '\n';
  67
  68   int current_bar_i = 0;
  69   Rational bar_mom = mudela_staff_l_->mudela_time_signature_l_->bar_mom ();
  70
  71   for (Cons<Mudela_item>* i = mudela_item_l_list_.head_; i; i = i->next_)
  72     {
  73       Rational at_mom = i->car_->mudela_column_l_->at_mom ();
  74       int bar_i = (int) (at_mom / bar_mom) + 1;
  75       if (bar_i > current_bar_i)
  76         {
  77           if (current_bar_i)
  78             {
  79               if (at_mom == Rational (bar_i - 1) * bar_mom)
  80                 mudela_stream_r << "|";
  81               mudela_stream_r << "\n% ";
  82               mudela_stream_r << String_convert::i2dec_str (bar_i, 0, ' ');
  83               mudela_stream_r << '\n';
  84             }
  85           LOGOUT (NORMAL_ver) << "[" << bar_i << "]" << flush;
  86           current_bar_i = bar_i;
  87         }
  88
  89       mudela_stream_r << *i->car_;
  90       if (Mudela_key* k = dynamic_cast<Mudela_key*> (i->car_))
  91         mudela_staff_l_->mudela_key_l_ = mudela_score_l_g->mudela_key_l_ = k;
  92     }
  93
  94   if (mudela_item_l_list_.size_i () > FAIRLY_LONG_VOICE_i)
  95     mudela_stream_r << '\n';
  96
  97   mudela_stream_r << "} ";
  98 }
  99
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