2 performance.cc -- implement Performance
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2006 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "performance.hh"
14 #include "audio-column.hh"
15 #include "audio-staff.hh"
16 #include "file-name.hh"
17 #include "international.hh"
18 #include "lily-version.hh"
20 #include "midi-item.hh"
21 #include "midi-stream.hh"
23 #include "string-convert.hh"
26 Performance::Performance ()
31 Performance::~Performance ()
33 junk_pointers (audio_elements_);
37 Performance::output (Midi_stream &midi_stream)
39 int tracks_ = audio_staffs_.size ();
42 int clocks_per_4 = 384;
44 midi_stream << Midi_header (1, tracks_, clocks_per_4);
45 message (_ ("Track...") + " ");
47 for (vsize i = 0; i < audio_staffs_.size (); i++)
49 Audio_staff *s = audio_staffs_[i];
50 if (be_verbose_global)
51 progress_indication ("[" + to_string (i));
54 MIDI players tend to ignore instrument settings on
55 channel 10, the percussion channel by default.
57 if (channel % 16 == 9)
61 Huh? Why does each staff also have a separate channel? We
62 should map channels to voices, not staves. --hwn.
66 warning (_ ("MIDI channel wrapped around"));
67 warning (_ ("remapping modulo 16"));
70 s->output (midi_stream, channel);
72 if (be_verbose_global)
73 progress_indication ("]");
78 Performance::add_element (Audio_element *p)
80 audio_elements_.push_back (p);
84 Performance::write_output (string out)
89 /* Maybe a bit crude, but we had this before */
90 File_name file_name (out);
91 file_name.ext_ = "midi";
92 out = file_name.to_string ();
94 Midi_stream midi_stream (out);
95 message (_f ("MIDI output to `%s'...", out));
98 progress_indication ("\n");