2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1997--2015 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"
24 #include "libc-extension.hh"
26 #include "midi-stream.hh"
28 #include "program-option.hh"
29 #include "string-convert.hh"
31 #include "lily-imports.hh"
35 #define PITCH_WHEEL_CENTER 0x2000
36 #define PITCH_WHEEL_SEMITONE 0X1000
39 Midi_item::get_midi (Audio_item *a)
41 if (Audio_key *i = dynamic_cast<Audio_key *> (a))
42 return new Midi_key (i);
43 else if (Audio_instrument *i = dynamic_cast<Audio_instrument *> (a))
44 return i->str_.length () ? new Midi_instrument (i) : 0;
45 else if (Audio_note *i = dynamic_cast<Audio_note *> (a))
46 return new Midi_note (i);
47 else if (Audio_dynamic *i = dynamic_cast<Audio_dynamic *> (a))
48 return new Midi_dynamic (i);
49 else if (Audio_piano_pedal *i = dynamic_cast<Audio_piano_pedal *> (a))
50 return new Midi_piano_pedal (i);
51 else if (Audio_tempo *i = dynamic_cast<Audio_tempo *> (a))
52 return new Midi_tempo (i);
53 else if (Audio_time_signature *i = dynamic_cast<Audio_time_signature *> (a))
54 return new Midi_time_signature (i);
55 else if (Audio_text *i = dynamic_cast<Audio_text *> (a))
56 return new Midi_text (i);
57 else if (Audio_control_function_value_change *i
58 = dynamic_cast<Audio_control_function_value_change *> (a))
59 return new Midi_control_function_value_change (i);
66 Midi_duration::Midi_duration (Real seconds_f)
72 Midi_duration::to_string () const
74 return string ("<duration: ") + ::to_string (seconds_) + ">";
77 Midi_instrument::Midi_instrument (Audio_instrument *a)
78 : Midi_channel_item (a),
81 audio_->str_ = String_convert::to_lower (audio_->str_);
85 Midi_instrument::to_string () const
87 Byte program_byte = 0;
90 SCM program = Lily::midi_program (ly_symbol2scm (audio_->str_.c_str ()));
91 found = (scm_is_true (program));
93 program_byte = (Byte) scm_to_int (program);
95 warning (_f ("no such MIDI instrument: `%s'", audio_->str_.c_str ()));
97 string str = ::to_string ((char) (0xc0 + channel_)); //YIKES! FIXME : Should be track. -rz
98 str += ::to_string ((char)program_byte);
102 Midi_item::Midi_item ()
106 Midi_channel_item::Midi_channel_item (Audio_item *ai)
107 : channel_ (ai->channel_)
111 Midi_control_function_value_change
112 ::Midi_control_function_value_change (Audio_control_function_value_change *ai)
113 : Midi_channel_item (ai), control_ (ai->control_), value_ (ai->value_)
117 Midi_item::~Midi_item ()
121 Midi_channel_item::~Midi_channel_item ()
125 Midi_control_function_value_change::~Midi_control_function_value_change ()
130 int2midi_varint_string (int i)
132 int buffer = i & 0x7f;
133 while ((i >>= 7) > 0)
137 buffer += (i & 0x7f);
143 str += ::to_string ((char)buffer);
152 Midi_key::Midi_key (Audio_key *a)
158 Midi_key::to_string () const
160 string str = "ff5902";
161 str += String_convert::int2hex (audio_->accidentals_, 2, '0');
163 str += String_convert::int2hex (0, 2, '0');
165 str += String_convert::int2hex (1, 2, '0');
166 return String_convert::hex2bin (str);
169 Midi_time_signature::Midi_time_signature (Audio_time_signature *a)
176 Midi_time_signature::to_string () const
178 int num = abs (audio_->beats_);
181 warning (_ ("Time signature with more than 255 beats. Truncating"));
185 int den = audio_->one_beat_;
187 string str = "ff5804";
188 str += String_convert::int2hex (num, 2, '0');
189 str += String_convert::int2hex (intlog2 (den), 2, '0');
190 str += String_convert::int2hex (clocks_per_1_, 2, '0');
191 str += String_convert::int2hex (8, 2, '0');
192 return String_convert::hex2bin (str);
195 Midi_note::Midi_note (Audio_note *a)
196 : Midi_channel_item (a),
198 dynamic_byte_ (std::min (std::max (Byte ((a->dynamic_ && a->dynamic_->volume_ >= 0
199 ? a->dynamic_->volume_ * 0x7f : 0x5a)
200 + a->extra_velocity_),
201 Byte (0)), Byte (0x7f)))
206 Midi_note::get_fine_tuning () const
208 Rational tune = (audio_->pitch_.tone_pitch ()
209 + audio_->transposing_.tone_pitch ()) * Rational (2);
210 tune -= Rational (get_semitone_pitch ());
212 tune *= PITCH_WHEEL_SEMITONE;
213 return (int) double (tune);
217 Midi_note::get_semitone_pitch () const
219 double tune = double ((audio_->pitch_.tone_pitch ()
220 + audio_->transposing_.tone_pitch ()) * Rational (2));
221 return int (rint (tune));
225 Midi_note::to_string () const
227 Byte status_byte = (char) (0x90 + channel_);
231 // print warning if fine tuning was needed, HJJ
232 if (get_fine_tuning () != 0)
234 finetune = PITCH_WHEEL_CENTER + get_fine_tuning ();
236 str += ::to_string ((char) (0xE0 + channel_));
237 str += ::to_string ((char) (finetune & 0x7F));
238 str += ::to_string ((char) (finetune >> 7));
239 str += ::to_string ((char) (0x00));
242 str += ::to_string ((char) status_byte);
243 str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_));
244 str += ::to_string ((char) dynamic_byte_);
249 Midi_note_off::Midi_note_off (Midi_note *n)
250 : Midi_note (n->audio_)
253 channel_ = n->channel_;
255 // use note_on with velocity=0 instead of note_off
256 aftertouch_byte_ = 0;
260 Midi_note_off::to_string () const
262 Byte status_byte = (char) (0x90 + channel_);
264 string str = ::to_string ((char)status_byte);
265 str += ::to_string ((char) (get_semitone_pitch () + Midi_note::c0_pitch_));
266 str += ::to_string ((char)aftertouch_byte_);
268 if (get_fine_tuning () != 0)
270 // Move pitch wheel back to the central position.
271 str += ::to_string ((char) 0x00);
272 str += ::to_string ((char) (0xE0 + channel_));
273 str += ::to_string ((char) (PITCH_WHEEL_CENTER & 0x7F));
274 str += ::to_string ((char) (PITCH_WHEEL_CENTER >> 7));
280 Midi_dynamic::Midi_dynamic (Audio_dynamic *a)
281 : Midi_channel_item (a),
287 Midi_dynamic::to_string () const
289 Byte status_byte = (char) (0xB0 + channel_);
290 string str = ::to_string ((char)status_byte);
293 Main volume controller (per channel):
297 static Real const full_scale = 127;
299 int volume = (int) (audio_->volume_ * full_scale);
302 if (volume > full_scale)
303 volume = (int)full_scale;
305 int const volume_default = 100;
306 if (audio_->volume_ < 0 || audio_->silent_)
307 volume = volume_default;
309 str += ::to_string ((char)0x07);
310 str += ::to_string ((char)volume);
314 Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal *a)
315 : Midi_channel_item (a),
321 Midi_piano_pedal::to_string () const
323 Byte status_byte = (char) (0xB0 + channel_);
324 string str = ::to_string ((char)status_byte);
326 if (audio_->type_string_ == "Sostenuto")
327 str += ::to_string ((char)0x42);
328 else if (audio_->type_string_ == "Sustain")
329 str += ::to_string ((char)0x40);
330 else if (audio_->type_string_ == "UnaCorda")
331 str += ::to_string ((char)0x43);
333 int pedal = ((1 - audio_->dir_) / 2) * 0x7f;
334 str += ::to_string ((char)pedal);
338 Midi_tempo::Midi_tempo (Audio_tempo *a)
344 Midi_tempo::to_string () const
346 int useconds_per_4 = 60 * (int)1e6 / audio_->per_minute_4_;
347 string str = "ff5103";
348 str += String_convert::int2hex (useconds_per_4, 6, '0');
349 return String_convert::hex2bin (str);
352 Midi_text::Midi_text (Audio_text *a)
358 Midi_text::to_string () const
360 string str = "ff" + String_convert::int2hex (audio_->type_, 2, '0');
361 str = String_convert::hex2bin (str);
362 str += int2midi_varint_string (audio_->text_string_.length ());
363 str += audio_->text_string_;
368 Midi_control_function_value_change::to_string () const
370 // MIDI control function information. A MIDI control function may have one
371 // or two assigned control numbers depending on whether it supports coarse
372 // (7-bit) or fine (14-bit) resolution. If the control function supports
373 // fine resolution, the first (respectively, second) member of the structure
374 // represents the control number for setting the most (least) significant 7
375 // bits of the control function's value.
376 struct Control_function
378 int msb_control_number_;
379 int lsb_control_number_;
382 // Mapping from supported control functions (enumeration values defined in
383 // Audio_controller_value_change::Control) to the corresponding MIDI control
385 static const Control_function control_functions[] =
387 // When adding support for new control functions, please note the
389 // - The order of the control number definitions should be kept
390 // consistent with the order of the enumeration values defined in
391 // Audio_control_function_value_change::Control.
392 // - If the control function has only coarse resolution, the function's
393 // control number should be stored in the MSB member of the array
394 // element, and the LSB member should be set to a negative value.
396 { 8, 40 }, // balance
397 { 10, 42 }, // pan position
398 { 11, 43 }, // expression
399 { 91, -1 }, // reverb level (only coarse resolution available)
400 { 93, -1 } // chorus level (only coarse resolution available)
404 const Control_function *control_function = &control_functions[control_];
405 static const Real full_fine_scale = 0x3FFF;
406 static const Real full_coarse_scale = 0x7F;
407 bool fine_resolution = (control_function->lsb_control_number_ >= 0);
408 // value_ is in range [0.0 .. 1.0]. For directional value ranges,
409 // #CENTER will correspond to 0.5 exactly, and my_round rounds
410 // upwards when in case of doubt. That means that center position
411 // will round to 0x40 or 0x2000 by a hair's breadth.
412 int value = (int) my_round (value_ * (fine_resolution ?
413 full_fine_scale : full_coarse_scale));
414 Byte status_byte = (char) (0xB0 + channel_);
415 str += ::to_string ((char)status_byte);
416 str += ::to_string ((char)(control_function->msb_control_number_));
417 str += ::to_string ((char)(fine_resolution ? (value >> 7) : value));
420 str += ::to_string ((char)0x00);
421 str += ::to_string ((char)status_byte);
422 str += ::to_string ((char)(control_function->lsb_control_number_));
423 str += ::to_string ((char)(value & 0x7F));
429 Midi_item::name () const
431 return class_name ();