2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2011 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 "midi-item.hh"
22 #include "duration.hh"
23 #include "international.hh"
25 #include "midi-stream.hh"
27 #include "program-option.hh"
28 #include "string-convert.hh"
31 #define PITCH_WHEEL_TOP 0x3FFF
32 #define PITCH_WHEEL_CENTER 0x2000
33 #define PITCH_WHEEL_BOTTOM 0x0000
34 #define PITCH_WHEEL_RANGE (PITCH_WHEEL_TOP - PITCH_WHEEL_BOTTOM)
37 Midi_item::get_midi (Audio_item *a)
39 if (Audio_key *i = dynamic_cast<Audio_key *> (a))
40 return new Midi_key (i);
41 else if (Audio_instrument *i = dynamic_cast<Audio_instrument *> (a))
42 return i->str_.length () ? new Midi_instrument (i) : 0;
43 else if (Audio_note *i = dynamic_cast<Audio_note *> (a))
44 return new Midi_note (i);
45 else if (Audio_dynamic *i = dynamic_cast<Audio_dynamic *> (a))
46 return new Midi_dynamic (i);
47 else if (Audio_piano_pedal *i = dynamic_cast<Audio_piano_pedal *> (a))
48 return new Midi_piano_pedal (i);
49 else if (Audio_tempo *i = dynamic_cast<Audio_tempo *> (a))
50 return new Midi_tempo (i);
51 else if (Audio_time_signature *i = dynamic_cast<Audio_time_signature *> (a))
52 return new Midi_time_signature (i);
53 else if (Audio_text *i = dynamic_cast<Audio_text *> (a))
54 return new Midi_text (i);
63 Midi_duration::Midi_duration (Real seconds_f)
69 Midi_duration::to_string () const
71 return string ("<duration: ") + ::to_string (seconds_) + ">";
74 Midi_instrument::Midi_instrument (Audio_instrument *a)
75 : Midi_channel_item (a)
78 audio_->str_ = String_convert::to_lower (audio_->str_);
82 Midi_instrument::to_string () const
84 Byte program_byte = 0;
87 SCM proc = ly_lily_module_constant ("midi-program");
88 SCM program = scm_call_1 (proc, ly_symbol2scm (audio_->str_.c_str ()));
89 found = (program != SCM_BOOL_F);
91 program_byte = (Byte) scm_to_int (program);
93 warning (_f ("no such MIDI instrument: `%s'", audio_->str_.c_str ()));
95 string str = ::to_string ((char) (0xc0 + channel_)); //YIKES! FIXME : Should be track. -rz
96 str += ::to_string ((char)program_byte);
100 Midi_item::Midi_item ()
104 Midi_channel_item::Midi_channel_item (Audio_item *ai)
105 : channel_ (ai->channel_)
109 Midi_item::~Midi_item ()
114 int2midi_varint_string (int i)
116 int buffer = i & 0x7f;
117 while ((i >>= 7) > 0)
121 buffer += (i & 0x7f);
127 str += ::to_string ((char)buffer);
136 Midi_key::Midi_key (Audio_key *a)
142 Midi_key::to_string () const
144 string str = "ff5902";
145 str += String_convert::int2hex (audio_->accidentals_, 2, '0');
147 str += String_convert::int2hex (0, 2, '0');
149 str += String_convert::int2hex (1, 2, '0');
150 return String_convert::hex2bin (str);
153 Midi_time_signature::Midi_time_signature (Audio_time_signature *a)
160 Midi_time_signature::to_string () const
162 int num = abs (audio_->beats_);
165 warning ("Time signature with more than 255 beats. Truncating");
169 int den = audio_->one_beat_;
173 string str = "ff5804";
174 str += String_convert::int2hex (num, 2, '0');
175 str += String_convert::int2hex (intlog2 (den), 2, '0');
176 str += String_convert::int2hex (clocks_per_1_, 2, '0');
177 str += String_convert::int2hex (8, 2, '0');
178 return String_convert::hex2bin (str);
181 Midi_note::Midi_note (Audio_note *a)
182 : Midi_channel_item (a)
184 , dynamic_byte_ (a->dynamic_ && a->dynamic_->volume_ >= 0
185 ? Byte (a->dynamic_->volume_ * 0x7f) : Byte (0x5a))
190 Midi_note::get_fine_tuning () const
192 Rational tune = (audio_->pitch_.tone_pitch ()
193 + audio_->transposing_.tone_pitch ()) * Rational (2);
194 tune -= Rational (get_semitone_pitch ());
197 return (int) double (tune);
201 Midi_note::get_semitone_pitch () const
203 return int (double ((audio_->pitch_.tone_pitch ()
204 + audio_->transposing_.tone_pitch ()) * Rational (2)));
208 Midi_note::to_string () const
210 Byte status_byte = (char) (0x90 + channel_);
214 // print warning if fine tuning was needed, HJJ
215 if (get_fine_tuning () != 0)
217 finetune = PITCH_WHEEL_CENTER;
218 // Move pitch wheel to a shifted position.
219 // The pitch wheel range (of 4 semitones) is multiplied by the cents.
220 finetune += (PITCH_WHEEL_RANGE *get_fine_tuning ()) / (4 * 100);
222 str += ::to_string ((char) (0xE0 + channel_));
223 str += ::to_string ((char) (finetune & 0x7F));
224 str += ::to_string ((char) (finetune >> 7));
225 str += ::to_string ((char) (0x00));
228 str += ::to_string ((char) status_byte);
229 str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_));
230 str += ::to_string ((char) dynamic_byte_);
235 Midi_note_off::Midi_note_off (Midi_note *n)
236 : Midi_note (n->audio_)
239 channel_ = n->channel_;
241 // use note_on with velocity=0 instead of note_off
242 aftertouch_byte_ = 0;
246 Midi_note_off::to_string () const
248 Byte status_byte = (char) (0x90 + channel_);
250 string str = ::to_string ((char)status_byte);
251 str += ::to_string ((char) (get_semitone_pitch () + Midi_note::c0_pitch_));
252 str += ::to_string ((char)aftertouch_byte_);
254 if (get_fine_tuning () != 0)
256 // Move pitch wheel back to the central position.
257 str += ::to_string ((char) 0x00);
258 str += ::to_string ((char) (0xE0 + channel_));
259 str += ::to_string ((char) (PITCH_WHEEL_CENTER &0x7F));
260 str += ::to_string ((char) (PITCH_WHEEL_CENTER >> 7));
266 Midi_dynamic::Midi_dynamic (Audio_dynamic *a)
267 : Midi_channel_item (a)
273 Midi_dynamic::to_string () const
275 Byte status_byte = (char) (0xB0 + channel_);
276 string str = ::to_string ((char)status_byte);
279 Main volume controller (per channel):
283 static Real const full_scale = 127;
285 int volume = (int) (audio_->volume_ * full_scale);
288 if (volume > full_scale)
289 volume = (int)full_scale;
291 int const volume_default = 100;
292 if (audio_->volume_ < 0 || audio_->silent_)
293 volume = volume_default;
295 str += ::to_string ((char)0x07);
296 str += ::to_string ((char)volume);
300 Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal *a)
301 : Midi_channel_item (a)
307 Midi_piano_pedal::to_string () const
309 Byte status_byte = (char) (0xB0 + channel_);
310 string str = ::to_string ((char)status_byte);
312 if (audio_->type_string_ == "Sostenuto")
313 str += ::to_string ((char)0x42);
314 else if (audio_->type_string_ == "Sustain")
315 str += ::to_string ((char)0x40);
316 else if (audio_->type_string_ == "UnaCorda")
317 str += ::to_string ((char)0x43);
319 int pedal = ((1 - audio_->dir_) / 2) * 0x7f;
320 str += ::to_string ((char)pedal);
324 Midi_tempo::Midi_tempo (Audio_tempo *a)
330 Midi_tempo::to_string () const
332 int useconds_per_4 = 60 * (int)1e6 / audio_->per_minute_4_;
333 string str = "ff5103";
334 str += String_convert::int2hex (useconds_per_4, 6, '0');
335 return String_convert::hex2bin (str);
338 Midi_text::Midi_text (Audio_text *a)
344 Midi_text::to_string () const
346 string str = "ff" + String_convert::int2hex (audio_->type_, 2, '0');
347 str = String_convert::hex2bin (str);
348 str += int2midi_varint_string (audio_->text_string_.length ());
349 str += audio_->text_string_;
354 Midi_item::name () const
356 return this->class_name ();