2 performance.cc -- implement Performance
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2003 Jan Nieuwenhuizen <janneke@gnu.org>
12 #include "string-convert.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"
22 #include "input-file-results.hh"
23 #include "file-path.hh"
24 #include "lily-version.hh"
26 #include "killing-cons.tcc"
28 Performance::Performance ()
31 audio_elem_p_list_ = 0;
35 Performance::~Performance ()
37 delete audio_elem_p_list_;
41 Performance::output (Midi_stream& midi_stream)
43 int tracks_i = audio_staffs_.size () + 1;
46 int clocks_per_4_i = 384;
48 midi_stream << Midi_header (1, tracks_i, clocks_per_4_i);
49 output_header_track (midi_stream);
50 progress_indication ("\n");
51 progress_indication (_ ("Track ... "));
53 for (int i =0; i < audio_staffs_.size (); i++)
55 Audio_staff *s = audio_staffs_[i];
57 progress_indication ("[" + to_string (i)) ;
60 MIDI players tend to ignore instrument settings on
61 channel 10, the percussion channel by default.
66 s->channel_ = channel;
67 s->output (midi_stream, channel++);
69 progress_indication ("]");
75 Performance::output_header_track (Midi_stream& midi_stream)
77 Midi_track midi_track;
79 midi_track.channel_ = 9;
81 // perhaps multiple text events?
83 String str = String (_ ("Creator: "));
84 id_string = String_convert::pad_to (gnu_lilypond_version_string (), 30);
88 This seems silly, but in fact the audio elements should
89 be generated elsewhere: not midi-specific.
91 Audio_text creator_a (Audio_text::TEXT, str);
92 Midi_text creator (&creator_a);
93 midi_track.add (Moment (0), &creator);
95 /* Better not translate this */
96 str = "Generated automatically by: ";
99 Audio_text generate_a (Audio_text::TEXT, str);
100 Midi_text generate (&generate_a);
101 midi_track.add (Moment (0), &generate);
106 str = str.left_string (str.length () - 1);
107 str = String_convert::pad_to (str, 60);
109 Audio_text at_a (Audio_text::TEXT, str);
110 Midi_text at (&at_a);
111 midi_track.add (Moment (0), &at);
115 // str = _f ("from musical definition: %s", origin_string_);
117 Audio_text from_a (Audio_text::TEXT, str);
118 Midi_text from (&from_a);
119 midi_track.add (Moment (0), &from);
121 Audio_text track_name_a (Audio_text::TRACK_NAME, "Track "
122 + String_convert::int2dec (0, 0, '0'));
123 Midi_text track_name (&track_name_a);
125 midi_track.add (Moment (0), &track_name);
127 // Some sequencers read track 0 last.
128 // Audio_tempo tempo_a (midi_->get_tempo (Moment (Rational (1, 4))));
129 // Midi_tempo tempo (&tempo_a);
130 // midi_track.add (Moment (0), &tempo);
132 midi_stream << midi_track;
136 Performance::add_element (Audio_element *p)
138 if (Audio_staff*s=dynamic_cast<Audio_staff *> (p))
140 audio_staffs_.push (s);
142 else if (Audio_column *c = dynamic_cast<Audio_column*> (p))
144 c->performance_ = this;
146 audio_elem_p_list_ = new Killing_cons<Audio_element> (p, audio_elem_p_list_);
151 Performance::process (String out)
156 /* Maybe a bit crude, but we had this before */
157 Path p = split_path (out);
159 out = p.to_string ();
161 Midi_stream midi_stream (out);
162 progress_indication (_f ("MIDI output to `%s'...", out));
164 global_input_file->target_strings_.push (out);
166 output (midi_stream);
167 progress_indication ("\n");