2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2012 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_CENTER 0x2000
32 #define PITCH_WHEEL_SEMITONE 0X1000
35 Midi_item::get_midi (Audio_item *a)
37 if (Audio_key *i = dynamic_cast<Audio_key *> (a))
38 return new Midi_key (i);
39 else if (Audio_instrument *i = dynamic_cast<Audio_instrument *> (a))
40 return i->str_.length () ? new Midi_instrument (i) : 0;
41 else if (Audio_note *i = dynamic_cast<Audio_note *> (a))
42 return new Midi_note (i);
43 else if (Audio_dynamic *i = dynamic_cast<Audio_dynamic *> (a))
44 return new Midi_dynamic (i);
45 else if (Audio_piano_pedal *i = dynamic_cast<Audio_piano_pedal *> (a))
46 return new Midi_piano_pedal (i);
47 else if (Audio_tempo *i = dynamic_cast<Audio_tempo *> (a))
48 return new Midi_tempo (i);
49 else if (Audio_time_signature *i = dynamic_cast<Audio_time_signature *> (a))
50 return new Midi_time_signature (i);
51 else if (Audio_text *i = dynamic_cast<Audio_text *> (a))
52 return new Midi_text (i);
53 else if (Audio_control_function_value_change *i
54 = dynamic_cast<Audio_control_function_value_change *> (a))
55 return new Midi_control_function_value_change (i);
62 Midi_duration::Midi_duration (Real seconds_f)
68 Midi_duration::to_string () const
70 return string ("<duration: ") + ::to_string (seconds_) + ">";
73 Midi_instrument::Midi_instrument (Audio_instrument *a)
74 : Midi_channel_item (a),
77 audio_->str_ = String_convert::to_lower (audio_->str_);
81 Midi_instrument::to_string () const
83 Byte program_byte = 0;
86 SCM proc = ly_lily_module_constant ("midi-program");
87 SCM program = scm_call_1 (proc, ly_symbol2scm (audio_->str_.c_str ()));
88 found = (program != SCM_BOOL_F);
90 program_byte = (Byte) scm_to_int (program);
92 warning (_f ("no such MIDI instrument: `%s'", audio_->str_.c_str ()));
94 string str = ::to_string ((char) (0xc0 + channel_)); //YIKES! FIXME : Should be track. -rz
95 str += ::to_string ((char)program_byte);
99 Midi_item::Midi_item ()
103 Midi_channel_item::Midi_channel_item (Audio_item *ai)
104 : channel_ (ai->channel_)
108 Midi_control_function_value_change
109 ::Midi_control_function_value_change (Audio_control_function_value_change *ai)
110 : Midi_channel_item (ai), control_ (ai->control_), value_ (ai->value_)
114 Midi_item::~Midi_item ()
118 Midi_channel_item::~Midi_channel_item ()
122 Midi_control_function_value_change::~Midi_control_function_value_change ()
127 int2midi_varint_string (int i)
129 int buffer = i & 0x7f;
130 while ((i >>= 7) > 0)
134 buffer += (i & 0x7f);
140 str += ::to_string ((char)buffer);
149 Midi_key::Midi_key (Audio_key *a)
155 Midi_key::to_string () const
157 string str = "ff5902";
158 str += String_convert::int2hex (audio_->accidentals_, 2, '0');
160 str += String_convert::int2hex (0, 2, '0');
162 str += String_convert::int2hex (1, 2, '0');
163 return String_convert::hex2bin (str);
166 Midi_time_signature::Midi_time_signature (Audio_time_signature *a)
173 Midi_time_signature::to_string () const
175 int num = abs (audio_->beats_);
178 warning (_ ("Time signature with more than 255 beats. Truncating"));
182 int den = audio_->one_beat_;
184 string str = "ff5804";
185 str += String_convert::int2hex (num, 2, '0');
186 str += String_convert::int2hex (intlog2 (den), 2, '0');
187 str += String_convert::int2hex (clocks_per_1_, 2, '0');
188 str += String_convert::int2hex (8, 2, '0');
189 return String_convert::hex2bin (str);
192 Midi_note::Midi_note (Audio_note *a)
193 : Midi_channel_item (a),
195 dynamic_byte_ (a->dynamic_ && a->dynamic_->volume_ >= 0
196 ? Byte (a->dynamic_->volume_ * 0x7f) : Byte (0x5a))
201 Midi_note::get_fine_tuning () const
203 Rational tune = (audio_->pitch_.tone_pitch ()
204 + audio_->transposing_.tone_pitch ()) * Rational (2);
205 tune -= Rational (get_semitone_pitch ());
207 tune *= PITCH_WHEEL_SEMITONE;
208 return (int) double (tune);
212 Midi_note::get_semitone_pitch () const
214 double tune = double ((audio_->pitch_.tone_pitch ()
215 + audio_->transposing_.tone_pitch ()) * Rational (2));
216 return int (rint (tune));
220 Midi_note::to_string () const
222 Byte status_byte = (char) (0x90 + channel_);
226 // print warning if fine tuning was needed, HJJ
227 if (get_fine_tuning () != 0)
229 finetune = PITCH_WHEEL_CENTER + get_fine_tuning ();
231 str += ::to_string ((char) (0xE0 + channel_));
232 str += ::to_string ((char) (finetune & 0x7F));
233 str += ::to_string ((char) (finetune >> 7));
234 str += ::to_string ((char) (0x00));
237 str += ::to_string ((char) status_byte);
238 str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_));
239 str += ::to_string ((char) dynamic_byte_);
244 Midi_note_off::Midi_note_off (Midi_note *n)
245 : Midi_note (n->audio_)
248 channel_ = n->channel_;
250 // use note_on with velocity=0 instead of note_off
251 aftertouch_byte_ = 0;
255 Midi_note_off::to_string () const
257 Byte status_byte = (char) (0x90 + channel_);
259 string str = ::to_string ((char)status_byte);
260 str += ::to_string ((char) (get_semitone_pitch () + Midi_note::c0_pitch_));
261 str += ::to_string ((char)aftertouch_byte_);
263 if (get_fine_tuning () != 0)
265 // Move pitch wheel back to the central position.
266 str += ::to_string ((char) 0x00);
267 str += ::to_string ((char) (0xE0 + channel_));
268 str += ::to_string ((char) (PITCH_WHEEL_CENTER & 0x7F));
269 str += ::to_string ((char) (PITCH_WHEEL_CENTER >> 7));
275 Midi_dynamic::Midi_dynamic (Audio_dynamic *a)
276 : Midi_channel_item (a),
282 Midi_dynamic::to_string () const
284 Byte status_byte = (char) (0xB0 + channel_);
285 string str = ::to_string ((char)status_byte);
288 Main volume controller (per channel):
292 static Real const full_scale = 127;
294 int volume = (int) (audio_->volume_ * full_scale);
297 if (volume > full_scale)
298 volume = (int)full_scale;
300 int const volume_default = 100;
301 if (audio_->volume_ < 0 || audio_->silent_)
302 volume = volume_default;
304 str += ::to_string ((char)0x07);
305 str += ::to_string ((char)volume);
309 Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal *a)
310 : Midi_channel_item (a),
316 Midi_piano_pedal::to_string () const
318 Byte status_byte = (char) (0xB0 + channel_);
319 string str = ::to_string ((char)status_byte);
321 if (audio_->type_string_ == "Sostenuto")
322 str += ::to_string ((char)0x42);
323 else if (audio_->type_string_ == "Sustain")
324 str += ::to_string ((char)0x40);
325 else if (audio_->type_string_ == "UnaCorda")
326 str += ::to_string ((char)0x43);
328 int pedal = ((1 - audio_->dir_) / 2) * 0x7f;
329 str += ::to_string ((char)pedal);
333 Midi_tempo::Midi_tempo (Audio_tempo *a)
339 Midi_tempo::to_string () const
341 int useconds_per_4 = 60 * (int)1e6 / audio_->per_minute_4_;
342 string str = "ff5103";
343 str += String_convert::int2hex (useconds_per_4, 6, '0');
344 return String_convert::hex2bin (str);
347 Midi_text::Midi_text (Audio_text *a)
353 Midi_text::to_string () const
355 string str = "ff" + String_convert::int2hex (audio_->type_, 2, '0');
356 str = String_convert::hex2bin (str);
357 str += int2midi_varint_string (audio_->text_string_.length ());
358 str += audio_->text_string_;
363 Midi_control_function_value_change::to_string () const
365 // MIDI control function information. A MIDI control function may have one
366 // or two assigned control numbers depending on whether it supports coarse
367 // (7-bit) or fine (14-bit) resolution. If the control function supports
368 // fine resolution, the first (respectively, second) member of the structure
369 // represents the control number for setting the most (least) significant 7
370 // bits of the control function's value.
371 struct Control_function
373 int msb_control_number_;
374 int lsb_control_number_;
377 // Mapping from supported control functions (enumeration values defined in
378 // Audio_controller_value_change::Control) to the corresponding MIDI control
380 static const Control_function control_functions[] =
382 // When adding support for new control functions, please note the
384 // - The order of the control number definitions should be kept
385 // consistent with the order of the enumeration values defined in
386 // Audio_control_function_value_change::Control.
387 // - If the control function has only coarse resolution, the function's
388 // control number should be stored in the MSB member of the array
389 // element, and the LSB member should be set to a negative value.
391 { 8, 40 }, // balance
392 { 10, 42 }, // pan position
393 { 91, -1 }, // reverb level (only coarse resolution available)
394 { 93, -1 } // chorus level (only coarse resolution available)
398 const Control_function *control_function = &control_functions[control_];
399 static const Real full_fine_scale = 0x3FFF;
400 static const Real full_coarse_scale = 0x7F;
401 bool fine_resolution = (control_function->lsb_control_number_ >= 0);
402 int value = lround (value_ * (fine_resolution ?
403 full_fine_scale : full_coarse_scale));
404 Byte status_byte = (char) (0xB0 + channel_);
405 str += ::to_string ((char)status_byte);
406 str += ::to_string ((char)(control_function->msb_control_number_));
407 str += ::to_string ((char)(fine_resolution ? (value >> 7) : value));
410 str += ::to_string ((char)0x00);
411 str += ::to_string ((char)status_byte);
412 str += ::to_string ((char)(control_function->lsb_control_number_));
413 str += ::to_string ((char)(value & 0x7F));
419 Midi_item::name () const
421 return this->class_name ();