lily/performance.cc

   1 /*
   2   performance.cc -- implement Performance
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Jan Nieuwenhuizen <janneke@gnu.org>
   7 */
   8
   9 #include <time.h>
  10 #include "debug.hh"
  11 #include "string.hh"
  12 #include "string-convert.hh"
  13 #include "main.hh"
  14 #include "midi-def.hh"
  15 #include "midi-item.hh"
  16 #include "midi-stream.hh"
  17 #include "audio-column.hh"
  18 #include "audio-item.hh"
  19 #include "audio-staff.hh"
  20 #include "performance.hh"
  21 #include "score.hh"
  22 #include "file-results.hh"
  23 #include "lily-version.hh"
  24
  25 #include "killing-cons.tcc"
  26
  27 Performance::Performance ()
  28 {
  29   midi_l_ =0;
  30   audio_elem_p_list_ = 0;
  31 }
  32
  33
  34 Performance::~Performance()
  35 {
  36   delete audio_elem_p_list_;
  37 }
  38
  39 void
  40 Performance::output (Midi_stream& midi_stream)
  41 {
  42   int tracks_i = audio_staff_l_arr_.size() + 1;
  43
  44   // ugh
  45   int clocks_per_4_i = 384;
  46
  47   midi_stream << Midi_header (1, tracks_i, clocks_per_4_i);
  48   output_header_track (midi_stream);
  49   *mlog << "\n";
  50   *mlog << _ ("Track ... ");
  51   int channel = 1;
  52   for (int i =0; i < audio_staff_l_arr_.size (); i++)
  53     {
  54       *mlog << '[' << flush;
  55       Audio_staff *s = audio_staff_l_arr_[i];
  56
  57       *mlog << i << flush;
  58
  59       /*
  60         Aargh, let's hear it for the MIDI standard.
  61         MIDI players tend to ignore instrument settings on
  62         channel 10, the percussion channel by default.
  63        */
  64       if (channel == 9)
  65         channel++;
  66       s->output (midi_stream, channel++);
  67       *mlog << ']' << flush;
  68     }
  69 }
  70
  71 void
  72 Performance::output_header_track (Midi_stream& midi_stream)
  73 {
  74   Midi_track midi_track;
  75
  76   // perhaps multiple text events?
  77   String str = String (_("Creator: "));
  78   if (no_timestamps_global_b)
  79     str += gnu_lilypond_str ();
  80   else
  81     str += gnu_lilypond_version_str();
  82   str += "\n";
  83
  84   /*
  85     This seems silly, but in fact the audio elements should
  86     be generated elsewhere: not midi-specific.
  87    */
  88   Audio_text creator_a (Audio_text::TEXT, str);
  89   Midi_text creator (&creator_a);
  90   midi_track.add (Moment (0), &creator);
  91
  92   str = _("Automatically generated");
  93   if (no_timestamps_global_b)
  94     str += ".\n";
  95   else
  96     {
  97       str += _(", at ");
  98       time_t t (time (0));
  99       str += ctime (&t);
 100       str = str.left_str (str.length_i() - 1);
 101     }
 102   Audio_text generate_a (Audio_text::TEXT, str);
 103   Midi_text generate (&generate_a);
 104   midi_track.add (Moment (0), &generate);
 105
 106   str = _f ("from musical definition: %s", origin_str_);
 107
 108   Audio_text from_a (Audio_text::TEXT, str);
 109   Midi_text from (&from_a);
 110   midi_track.add (Moment (0), &from);
 111
 112   Audio_text track_name_a (Audio_text::TRACK_NAME, "Track "
 113                            + String_convert::i2dec_str (0, 0, '0'));
 114   Midi_text track_name (&track_name_a);
 115
 116   midi_track.add (Moment (0), &track_name);
 117
 118   // Some sequencers read track 0 last.
 119   //  Audio_tempo tempo_a (midi_l_->get_tempo_i (Moment (1, 4)));
 120   //  Midi_tempo tempo (&tempo_a);
 121   //  midi_track.add (Moment (0), &tempo);
 122
 123   midi_stream << midi_track;
 124 }
 125
 126 void
 127 Performance::add_element (Audio_element *p)
 128 {
 129   if (Audio_staff*s=dynamic_cast<Audio_staff *> (p))
 130     {
 131       audio_staff_l_arr_.push (s);
 132     }
 133   else if (Audio_column *c = dynamic_cast<Audio_column*>(p))
 134     {
 135       c->performance_l_ = this;
 136     }
 137   audio_elem_p_list_ = new Killing_cons<Audio_element> (p, audio_elem_p_list_);
 138 }
 139
 140 void
 141 Performance::print() const
 142 {
 143 #ifndef NPRINT
 144   DEBUG_OUT << "Performance { ";
 145   DEBUG_OUT << "Items: ";
 146   for (Cons<Audio_element>* i =audio_elem_p_list_; i; i = i->next_)
 147     i->car_->print ();
 148   DEBUG_OUT << "}";
 149 #endif
 150 }
 151
 152 void
 153 Performance::process()
 154 {
 155   print ();
 156
 157   String out = midi_l_->get_default_output ();
 158   if (out.empty_b ())
 159     {
 160
 161       out = default_outname_base_global;
 162       if (out == "-")
 163         out = "lelie";
 164       int def = midi_l_->get_next_default_count ();
 165       if (def)
 166         {
 167           out += "-" + to_str (def);
 168         }
 169
 170       out += ".midi";
 171     }
 172
 173   Midi_stream midi_stream (out);
 174   *mlog << _f ("MIDI output to %s...", out) << endl;
 175   target_str_global_array.push (out);
 176
 177   output (midi_stream);
 178   *mlog << endl;
 179 }