2 midi-item.cc -- implement Midi items.
4 source file of the GNU LilyPond music typesetter
6 (c) 1997 Jan Nieuwenhuizen <jan@digicash.com>
15 #include "string-convert.hh"
16 #include "command-request.hh"
17 #include "musical-request.hh"
18 #include "midi-item.hh"
19 #include "midi-stream.hh"
20 #include "audio-item.hh"
22 IMPLEMENT_IS_TYPE_B (Midi_item);
23 IMPLEMENT_IS_TYPE_B1 (Midi_chunk, Midi_item);
24 IMPLEMENT_IS_TYPE_B1 (Midi_duration, Midi_item);
25 IMPLEMENT_IS_TYPE_B1 (Midi_header, Midi_chunk);
26 IMPLEMENT_IS_TYPE_B1 (Midi_instrument, Midi_item);
27 IMPLEMENT_IS_TYPE_B1 (Midi_key,Midi_item);
28 IMPLEMENT_IS_TYPE_B1 (Midi_meter, Midi_item);
29 IMPLEMENT_IS_TYPE_B1 (Midi_note, Midi_item);
30 IMPLEMENT_IS_TYPE_B1 (Midi_note_off, Midi_item);
31 IMPLEMENT_IS_TYPE_B1 (Midi_tempo, Midi_item);
32 IMPLEMENT_IS_TYPE_B1 (Midi_text, Midi_item);
33 IMPLEMENT_IS_TYPE_B1 (Midi_track, Midi_chunk);
35 Midi_chunk::Midi_chunk ()
41 Midi_chunk::set (String header_str, String data_str, String footer_str)
44 footer_str_ = footer_str;
45 header_str_ = header_str;
49 Midi_chunk::data_str () const
55 Midi_chunk::str () const
57 String str = header_str_;
58 String dat = data_str ();
60 // String length_str = String_convert::i2hex_str (dat.length_i ()
61 String length_str = String_convert::i2hex_str (data_str_.length_i ()
62 + footer_str_.length_i (), 8, '0');
63 length_str = String_convert::hex2bin_str (length_str);
70 Midi_duration::Midi_duration (Real seconds_f)
73 seconds_f_ = seconds_f;
77 Midi_duration::str () const
79 return String ("<duration: ") + String (seconds_f_) + ">";
82 Midi_event::Midi_event (Moment delta_mom, Midi_item* mitem_p)
84 delta_mom_ = delta_mom;
88 Midi_event::~Midi_event ()
95 Midi_event::str () const
97 int delta_i = delta_mom_ * Moment (Duration::division_1_i_s);
98 String delta_str = Midi_item::i2varint_str (delta_i);
99 String mitem_str = mitem_p_->str ();
100 assert (mitem_str.length_i ());
101 return delta_str + mitem_str;
105 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
110 String format_str = String_convert::i2hex_str (format_i, 4, '0');
111 str += String_convert::hex2bin_str (format_str);
113 String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
114 str += String_convert::hex2bin_str (tracks_str);
116 String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
117 str += String_convert::hex2bin_str (tempo_str);
119 set ("MThd", str, "");
122 char const* const instrument_name_sz_a_[ ] = {
124 /* default is usually piano */
128 /* 1 */ "acoustic grand",
129 /* 2 */ "bright acoustic",
130 /* 3 */ "electric grand",
131 /* 4 */ "honky-tonk",
132 /* 5 */ "electric piano 1",
133 /* 6 */ "electric piano 2",
134 /* 7 */ "harpsichord",
137 /* (9-16 chrom percussion) */
139 /* 10 */ "glockenspiel",
140 /* 11 */ "music box",
141 /* 12 */ "vibraphone",
143 /* 14 */ "xylophone",
144 /* 15 */ "tubular bells",
148 /* 17 */ "drawbar organ",
149 /* 18 */ "percussive organ",
150 /* 19 */ "rock organ",
151 /* 20 */ "church organ",
152 /* 21 */ "reed organ",
153 /* 22 */ "accoridan",
154 /* 23 */ "harmonica",
155 /* 24 */ "tango accordian",
158 /* 25 */ "acoustic guitar (nylon)",
159 /* 26 */ "acoustic guitar (steel)",
160 /* 27 */ "electric guitar (jazz)",
161 /* 28 */ "electric guitar (clean)",
162 /* 29 */ "electric guitar (muted)",
163 /* 30 */ "overdriven guitar",
164 /* 31 */ "distortion guitar",
165 /* 32 */ "guitar harmonics",
168 /* 33 */ "acoustic bass",
169 /* 34 */ "electric bass (finger)",
170 /* 35 */ "electric bass (pick)",
171 /* 36 */ "fretless bass",
172 /* 37 */ "slap bass 1",
173 /* 38 */ "slap bass 2",
174 /* 39 */ "synth bass 1",
175 /* 40 */ "synth bass 2",
177 /* (41-48 strings) */
181 /* 44 */ "contrabass",
182 /* 45 */ "tremolo strings",
183 /* 46 */ "pizzicato strings",
184 /* 47 */ "orchestral strings",
187 /* (49-56 ensemble) */
188 /* 49 */ "string ensemble 1",
189 /* 50 */ "string ensemble 2",
190 /* 51 */ "synthstrings 1",
191 /* 52 */ "synthstrings 2",
192 /* 53 */ "choir aahs",
193 /* 54 */ "voice oohs",
194 /* 55 */ "synth voice",
195 /* 56 */ "orchestra hit",
201 /* 60 */ "muted trumpet",
202 /* 61 */ "french horn",
203 /* 62 */ "brass section",
204 /* 63 */ "synthbrass 1",
205 /* 64 */ "synthbrass 2",
208 /* 65 */ "soprano sax",
210 /* 67 */ "tenor sax",
211 /* 68 */ "baritone sax",
213 /* 70 */ "english horn",
221 /* 76 */ "pan flute",
222 /* 77 */ "blown bottle",
223 /* 78 */ "skakuhachi",
227 /* (81-88 synth lead) */
228 /* 81 */ "lead 1 (square)",
229 /* 82 */ "lead 2 (sawtooth)",
230 /* 83 */ "lead 3 (calliope)",
231 /* 84 */ "lead 4 (chiff)",
232 /* 85 */ "lead 5 (charang)",
233 /* 86 */ "lead 6 (voice)",
234 /* 87 */ "lead 7 (fifths)",
235 /* 88 */ "lead 8 (bass+lead)",
237 /* (89-96 synth pad) */
238 /* 89 */ "pad 1 (new age)",
239 /* 90 */ "pad 2 (warm)",
240 /* 91 */ "pad 3 (polysynth)",
241 /* 92 */ "pad 4 (choir)",
242 /* 93 */ "pad 5 (bowed)",
243 /* 94 */ "pad 6 (metallic)",
244 /* 95 */ "pad 7 (halo)",
245 /* 96 */ "pad 8 (sweep)",
247 /* (97-104 synth effects) */
248 /* 97 */ "fx 1 (rain)",
249 /* 98 */ "fx 2 (soundtrack)",
250 /* 99 */ "fx 3 (crystal)",
251 /* 100 */ "fx 4 (atmosphere)",
252 /* 101 */ "fx 5 (brightness)",
253 /* 102 */ "fx 6 (goblins)",
254 /* 103 */ "fx 7 (echoes)",
255 /* 104 */ "fx 8 (sci-fi)",
257 /* (105-112 ethnic) */
260 /* 107 */ "shamisen",
267 /* (113-120 percussive) */
268 /* 113 */ "tinkle bell",
270 /* 115 */ "steel drums",
271 /* 116 */ "woodblock",
272 /* 117 */ "taiko drum",
273 /* 118 */ "melodic tom",
274 /* 119 */ "synth drum",
275 /* 120 */ "reverse cymbal",
277 /* (121-128 sound effects) */
278 /* 121 */ "guitar fret noise",
279 /* 122 */ "breath noise",
280 /* 123 */ "seashore",
281 /* 124 */ "bird tweet",
282 /* 125 */ "telephone ring",
283 /* 126 */ "helicopter",
284 /* 127 */ "applause",
289 Midi_instrument::Midi_instrument (int channel_i, String instrument_str)
292 instrument_str_ = instrument_str;
293 instrument_str_.to_lower ();
294 channel_i_ = channel_i;
297 Midi_item::~Midi_item ()
302 Midi_instrument::str () const
304 Byte program_byte = 0;
305 for (int i = 0; instrument_name_sz_a_[i]; i++)
306 if (instrument_str_ == String (instrument_name_sz_a_[ i ]))
308 program_byte = (Byte)i;
312 String str = String ( (char) (0xc0 + channel_i_));
313 str += String ( (char)program_byte);
317 Midi_item::Midi_item (Audio_item* audio_item_l)
319 audio_item_l_ = audio_item_l;
324 Midi_item::i2varint_str (int i)
326 int buffer_i = i & 0x7f;
327 while ( (i >>= 7) > 0)
331 buffer_i += (i & 0x7f);
337 str += (char)buffer_i;
346 Midi_key::Midi_key (Audio_item* audio_item_l)
347 : Midi_item (audio_item_l)
352 Midi_key::str () const
354 Key_change_req* k = audio_item_l_->req_l_->command ()->keychange ();
355 int sharps_i = k->sharps_i ();
356 int flats_i = k->flats_i ();
358 // midi cannot handle non-conventional keys
359 if (flats_i && sharps_i)
361 int accidentals_i = sharps_i - flats_i;
363 String str = "ff5902";
364 str += String_convert::i2hex_str (accidentals_i, 2, '0');
365 int minor_i = k->minor_b ();
366 str += String_convert::i2hex_str (minor_i, 2, '0');
367 return String_convert::hex2bin_str (str);
370 Midi_meter::Midi_meter (Audio_item* audio_item_l)
371 : Midi_item (audio_item_l)
373 clocks_per_1_i_ = 18;
377 Midi_meter::str () const
379 Meter_change_req* m = audio_item_l_->req_l_->command ()->meterchange ();
380 int num_i = m->beats_i_;
381 int den_i = m->one_beat_i_;
383 String str = "ff5804";
384 str += String_convert::i2hex_str (num_i, 2, '0');
385 str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
386 str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
387 str += String_convert::i2hex_str (8, 2, '0');
388 return String_convert::hex2bin_str (str);
391 Midi_note::Midi_note (Audio_item* audio_item_l)
392 : Midi_item (audio_item_l)
394 dynamic_byte_ = 0x7f;
398 Midi_note::duration () const
400 return audio_item_l_->req_l_->musical ()->rhythmic ()->duration ();
404 Midi_note::pitch_i () const
406 return audio_item_l_->req_l_->musical ()->melodic ()->pitch ();
410 Midi_note::str () const
412 if (pitch_i () == INT_MAX)
415 Byte status_byte = (char) (0x90 + channel_i_);
417 String str = String ( (char)status_byte);
418 str += (char) (pitch_i () + c0_pitch_i_c_);
420 // poor man's staff dynamics:
421 str += (char) (dynamic_byte_ - 0x10 * channel_i_);
426 Midi_note_off::Midi_note_off (Midi_note* midi_note_l)
427 : Midi_item (midi_note_l->audio_item_l_)
429 // 0x64 is supposed to be neutral, but let's try
430 aftertouch_byte_ = 0x64;
431 channel_i_ = midi_note_l->channel_i_;
435 Midi_note_off::pitch_i () const
437 return audio_item_l_->req_l_->musical ()->melodic ()->pitch ();
441 Midi_note_off::str () const
443 if (pitch_i () == INT_MAX)
446 Byte status_byte = (char) (0x80 + channel_i_);
448 String str = String ( (char)status_byte);
449 str += (char) (pitch_i () + Midi_note::c0_pitch_i_c_);
450 str += (char)aftertouch_byte_;
454 Midi_tempo::Midi_tempo (Audio_item* audio_item_l)
455 : Midi_item (audio_item_l)
457 per_minute_4_i_ = ( (Audio_tempo*)audio_item_l_)->per_minute_4_i_;
460 Midi_tempo::Midi_tempo (int per_minute_4_i)
463 per_minute_4_i_ = per_minute_4_i;
467 Midi_tempo::str () const
469 int useconds_per_4_i = 60 * (int)1e6 / per_minute_4_i_;
470 String str = "ff5103";
471 str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
472 return String_convert::hex2bin_str (str);
475 Midi_text::Midi_text (Audio_item* audio_item_l)
476 : Midi_item (audio_item_l)
478 text_str_ = ( (Audio_text*)audio_item_l_)->text_str_;
479 type_ = (Type) ( (Audio_text*)audio_item_l_)->type_;
482 Midi_text::Midi_text (Midi_text::Type type, String text_str)
485 text_str_ = text_str;
490 Midi_text::str () const
492 String str = "ff" + String_convert::i2hex_str (type_, 2, '0');
493 str = String_convert::hex2bin_str (str);
494 str += i2varint_str (text_str_.length_i ());
499 Midi_track::Midi_track ()
503 // 00 00 00 3B chunk length (59)
504 // 00 FF 58 04 04 02 18 08 time signature
505 // 00 FF 51 03 07 A1 20 tempo
507 // FF 59 02 sf mi Key Signature
518 char const* data_ch_C = ""
519 // "00" "ff58" "0404" "0218" "08"
520 // "00" "ff51" "0307" "a120"
521 // why a key at all, in midi?
523 // "00" "ff59" "02" "00" "00"
524 // key: F (scsii-menuetto)
525 // "00" "ff59" "02" "ff" "00"
529 // only for format 0 (currently using format 1)?
530 data_str += String_convert::hex2bin_str (data_ch_C);
532 char const* footer_ch_C = "00" "ff2f" "00";
533 String footer_str = String_convert::hex2bin_str (footer_ch_C);
535 set ("MTrk", data_str, footer_str);
539 Midi_track::add (Moment delta_time_mom, Midi_item* mitem_p)
541 assert (delta_time_mom >= Moment (0));
543 event_p_list_.bottom ().add (new Midi_event (delta_time_mom, mitem_p));
547 Midi_track::data_str () const
549 String str = Midi_chunk::data_str ();
550 if (check_debug && !monitor->silent_b ("Midistrings"))
552 for (PCursor<Midi_event*> i (event_p_list_); i.ok (); i++)
555 if (check_debug && !monitor->silent_b ("Midistrings"))
561 Midi_track::~Midi_track ()