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 "audio-column.hh"
23 #include "duration.hh"
24 #include "international.hh"
25 #include "libc-extension.hh"
27 #include "midi-stream.hh"
29 #include "program-option.hh"
30 #include "string-convert.hh"
32 #include "lily-imports.hh"
34 #define PITCH_WHEEL_CENTER 0x2000
35 #define PITCH_WHEEL_SEMITONE 0X1000
38 Midi_item::get_midi (Audio_item *a)
40 if (Audio_key *i = dynamic_cast<Audio_key *> (a))
41 return new Midi_key (i);
42 else if (Audio_instrument *i = dynamic_cast<Audio_instrument *> (a))
43 return i->str_.length () ? new Midi_instrument (i) : 0;
44 else if (Audio_note *i = dynamic_cast<Audio_note *> (a))
45 return new Midi_note (i);
46 else if (Audio_piano_pedal *i = dynamic_cast<Audio_piano_pedal *> (a))
47 return new Midi_piano_pedal (i);
48 else if (Audio_tempo *i = dynamic_cast<Audio_tempo *> (a))
49 return new Midi_tempo (i);
50 else if (Audio_time_signature *i = dynamic_cast<Audio_time_signature *> (a))
51 return new Midi_time_signature (i);
52 else if (Audio_text *i = dynamic_cast<Audio_text *> (a))
53 return new Midi_text (i);
54 else if (Audio_control_function_value_change *i
55 = dynamic_cast<Audio_control_function_value_change *> (a))
56 return new Midi_control_function_value_change (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 program = Lily::midi_program (ly_symbol2scm (audio_->str_.c_str ()));
88 found = (scm_is_true (program));
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_ (min (max (Byte ((a->dynamic_
196 ? a->dynamic_->get_volume (a->audio_column_->when ()) * 0x7f : 0x5a)
197 + a->extra_velocity_),
198 Byte (0)), Byte (0x7f)))
203 Midi_note::get_fine_tuning () const
205 Rational tune = (audio_->pitch_.tone_pitch ()
206 + audio_->transposing_.tone_pitch ()) * Rational (2);
207 tune -= Rational (get_semitone_pitch ());
209 tune *= PITCH_WHEEL_SEMITONE;
210 return (int) double (tune);
214 Midi_note::get_semitone_pitch () const
216 double tune = double ((audio_->pitch_.tone_pitch ()
217 + audio_->transposing_.tone_pitch ()) * Rational (2));
218 return int (rint (tune));
222 Midi_note::to_string () const
224 Byte status_byte = (char) (0x90 + channel_);
228 // print warning if fine tuning was needed, HJJ
229 if (get_fine_tuning () != 0)
231 finetune = PITCH_WHEEL_CENTER + get_fine_tuning ();
233 str += ::to_string ((char) (0xE0 + channel_));
234 str += ::to_string ((char) (finetune & 0x7F));
235 str += ::to_string ((char) (finetune >> 7));
236 str += ::to_string ((char) (0x00));
239 str += ::to_string ((char) status_byte);
240 str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_));
241 str += ::to_string ((char) dynamic_byte_);
246 Midi_note_off::Midi_note_off (Midi_note *n)
247 : Midi_note (n->audio_)
250 channel_ = n->channel_;
252 // use note_on with velocity=0 instead of note_off
253 aftertouch_byte_ = 0;
257 Midi_note_off::to_string () const
259 Byte status_byte = (char) (0x90 + channel_);
261 string str = ::to_string ((char)status_byte);
262 str += ::to_string ((char) (get_semitone_pitch () + Midi_note::c0_pitch_));
263 str += ::to_string ((char)aftertouch_byte_);
265 if (get_fine_tuning () != 0)
267 // Move pitch wheel back to the central position.
268 str += ::to_string ((char) 0x00);
269 str += ::to_string ((char) (0xE0 + channel_));
270 str += ::to_string ((char) (PITCH_WHEEL_CENTER & 0x7F));
271 str += ::to_string ((char) (PITCH_WHEEL_CENTER >> 7));
277 Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal *a)
278 : Midi_channel_item (a),
284 Midi_piano_pedal::to_string () const
286 Byte status_byte = (char) (0xB0 + channel_);
287 string str = ::to_string ((char)status_byte);
289 if (audio_->type_string_ == "Sostenuto")
290 str += ::to_string ((char)0x42);
291 else if (audio_->type_string_ == "Sustain")
292 str += ::to_string ((char)0x40);
293 else if (audio_->type_string_ == "UnaCorda")
294 str += ::to_string ((char)0x43);
296 int pedal = ((1 - audio_->dir_) / 2) * 0x7f;
297 str += ::to_string ((char)pedal);
301 Midi_tempo::Midi_tempo (Audio_tempo *a)
307 Midi_tempo::to_string () const
309 int useconds_per_4 = 60 * (int)1e6 / audio_->per_minute_4_;
310 string str = "ff5103";
311 str += String_convert::int2hex (useconds_per_4, 6, '0');
312 return String_convert::hex2bin (str);
315 Midi_text::Midi_text (Audio_text *a)
321 Midi_text::to_string () const
323 string str = "ff" + String_convert::int2hex (audio_->type_, 2, '0');
324 str = String_convert::hex2bin (str);
325 str += int2midi_varint_string (audio_->text_string_.length ());
326 str += audio_->text_string_;
331 Midi_control_function_value_change::to_string () const
333 // MIDI control function information. A MIDI control function may have one
334 // or two assigned control numbers depending on whether it supports coarse
335 // (7-bit) or fine (14-bit) resolution. If the control function supports
336 // fine resolution, the first (respectively, second) member of the structure
337 // represents the control number for setting the most (least) significant 7
338 // bits of the control function's value.
339 struct Control_function
341 int msb_control_number_;
342 int lsb_control_number_;
345 // Mapping from supported control functions (enumeration values defined in
346 // Audio_controller_value_change::Control) to the corresponding MIDI control
348 static const Control_function control_functions[] =
350 // When adding support for new control functions, please note the
352 // - The order of the control number definitions should be kept
353 // consistent with the order of the enumeration values defined in
354 // Audio_control_function_value_change::Control.
355 // - If the control function has only coarse resolution, the function's
356 // control number should be stored in the MSB member of the array
357 // element, and the LSB member should be set to a negative value.
359 { 8, 40 }, // balance
360 { 10, 42 }, // pan position
361 { 11, 43 }, // expression
362 { 91, -1 }, // reverb level (only coarse resolution available)
363 { 93, -1 } // chorus level (only coarse resolution available)
367 const Control_function *control_function = &control_functions[control_];
368 static const Real full_fine_scale = 0x3FFF;
369 static const Real full_coarse_scale = 0x7F;
370 bool fine_resolution = (control_function->lsb_control_number_ >= 0);
371 // value_ is in range [0.0 .. 1.0]. For directional value ranges,
372 // #CENTER will correspond to 0.5 exactly, and my_round rounds
373 // upwards when in case of doubt. That means that center position
374 // will round to 0x40 or 0x2000 by a hair's breadth.
375 int value = (int) my_round (value_ * (fine_resolution ?
376 full_fine_scale : full_coarse_scale));
377 Byte status_byte = (char) (0xB0 + channel_);
378 str += ::to_string ((char)status_byte);
379 str += ::to_string ((char)(control_function->msb_control_number_));
380 str += ::to_string ((char)(fine_resolution ? (value >> 7) : value));
383 str += ::to_string ((char)0x00);
384 str += ::to_string ((char)status_byte);
385 str += ::to_string ((char)(control_function->lsb_control_number_));
386 str += ::to_string ((char)(value & 0x7F));
392 Midi_item::name () const
394 return class_name ();