Fix type predicates/docstrings for two music properties.
[lilypond/mpolesky.git] / lily / performance.cc
blob1e360054ade3afce50a92e8f7af65584ff666bfd
1 /*
2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2010 Jan Nieuwenhuizen <janneke@gnu.org>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "performance.hh"
22 #include <ctime>
23 using namespace std;
25 #include "audio-column.hh"
26 #include "audio-staff.hh"
27 #include "file-name.hh"
28 #include "international.hh"
29 #include "lily-version.hh"
30 #include "main.hh"
31 #include "midi-chunk.hh"
32 #include "midi-stream.hh"
33 #include "score.hh"
34 #include "string-convert.hh"
35 #include "warn.hh"
37 Performance::Performance ()
39 midi_ = 0;
42 Performance::~Performance ()
44 junk_pointers (audio_elements_);
47 void
48 Performance::output (Midi_stream &midi_stream) const
50 int tracks_ = audio_staffs_.size ();
52 midi_stream.write (Midi_header (1, tracks_, 384));
53 if (be_verbose_global)
54 progress_indication (_ ("Track...") + " ");
56 int channel = 0;
57 for (vsize i = 0; i < audio_staffs_.size (); i++)
59 Audio_staff *s = audio_staffs_[i];
60 if (be_verbose_global)
61 progress_indication ("[" + to_string (i));
63 int midi_channel = s->channel_;
65 if (midi_channel < 0)
67 midi_channel = channel;
68 channel ++;
70 MIDI players tend to ignore instrument settings on
71 channel 10, the percussion channel.
73 if (channel % 16 == 9)
74 channel ++;
78 Huh? Why does each staff also have a separate channel? We
79 should map channels to voices, not staves. --hwn.
81 if (midi_channel > 15)
83 warning (_ ("MIDI channel wrapped around"));
84 warning (_ ("remapping modulo 16"));
86 midi_channel = midi_channel % 16;
89 s->output (midi_stream, midi_channel);
90 if (be_verbose_global)
91 progress_indication ("]");
94 void
95 Performance::add_element (Audio_element *p)
97 audio_elements_.push_back (p);
100 void
101 Performance::write_output (string out) const
103 if (out == "-")
104 out = "lelie.midi";
106 /* Maybe a bit crude, but we had this before */
107 File_name file_name (out);
108 out = file_name.to_string ();
110 Midi_stream midi_stream (out);
111 message (_f ("MIDI output to `%s'...", out));
113 output (midi_stream);
114 progress_indication ("\n");
118 void
119 Performance::process ()
123 Performance *
124 unsmob_performance (SCM x)
126 return dynamic_cast<Performance*> (unsmob_music_output (x));