2 midi-item.cc -- implement Midi items.
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1998 Jan Nieuwenhuizen <janneke@gnu.org>
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_time_signature, 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 ()
63 String length_str = String_convert::i2hex_str (data_str_.length_i ()
65 + footer_str_.length_i (), 8, '0');
66 length_str = String_convert::hex2bin_str (length_str);
73 Midi_duration::Midi_duration (Real seconds_f)
76 seconds_f_ = seconds_f;
80 Midi_duration::str () const
82 return String ("<duration: ") + to_str (seconds_f_) + ">";
85 Midi_event::Midi_event (Moment delta_mom, Midi_item* mitem_p)
87 delta_mom_ = delta_mom;
91 Midi_event::~Midi_event ()
98 Midi_event::str () const
100 int delta_i = delta_mom_ * Moment (Duration::division_1_i_s);
101 String delta_str = Midi_item::i2varint_str (delta_i);
102 String mitem_str = mitem_p_->str ();
103 assert (mitem_str.length_i ());
104 return delta_str + mitem_str;
108 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
113 String format_str = String_convert::i2hex_str (format_i, 4, '0');
114 str += String_convert::hex2bin_str (format_str);
116 String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
117 str += String_convert::hex2bin_str (tracks_str);
119 String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
120 str += String_convert::hex2bin_str (tempo_str);
122 set ("MThd", str, "");
125 char const* const instrument_name_sz_a_[ ] = {
127 /* default is usually piano */
131 /* 1 */ "acoustic grand",
132 /* 2 */ "bright acoustic",
133 /* 3 */ "electric grand",
134 /* 4 */ "honky-tonk",
135 /* 5 */ "electric piano 1",
136 /* 6 */ "electric piano 2",
137 /* 7 */ "harpsichord",
140 /* (9-16 chrom percussion) */
142 /* 10 */ "glockenspiel",
143 /* 11 */ "music box",
144 /* 12 */ "vibraphone",
146 /* 14 */ "xylophone",
147 /* 15 */ "tubular bells",
151 /* 17 */ "drawbar organ",
152 /* 18 */ "percussive organ",
153 /* 19 */ "rock organ",
154 /* 20 */ "church organ",
155 /* 21 */ "reed organ",
156 /* 22 */ "accordion",
157 /* 23 */ "harmonica",
158 /* 24 */ "concertina",
161 /* 25 */ "acoustic guitar (nylon)",
162 /* 26 */ "acoustic guitar (steel)",
163 /* 27 */ "electric guitar (jazz)",
164 /* 28 */ "electric guitar (clean)",
165 /* 29 */ "electric guitar (muted)",
166 /* 30 */ "overdriven guitar",
167 /* 31 */ "distorted guitar",
168 /* 32 */ "guitar harmonics",
171 /* 33 */ "acoustic bass",
172 /* 34 */ "electric bass (finger)",
173 /* 35 */ "electric bass (pick)",
174 /* 36 */ "fretless bass",
175 /* 37 */ "slap bass 1",
176 /* 38 */ "slap bass 2",
177 /* 39 */ "synth bass 1",
178 /* 40 */ "synth bass 2",
180 /* (41-48 strings) */
184 /* 44 */ "contrabass",
185 /* 45 */ "tremolo strings",
186 /* 46 */ "pizzicato strings",
187 /* 47 */ "orchestral strings",
190 /* (49-56 ensemble) */
191 /* 49 */ "string ensemble 1",
192 /* 50 */ "string ensemble 2",
193 /* 51 */ "synthstrings 1",
194 /* 52 */ "synthstrings 2",
195 /* 53 */ "choir aahs",
196 /* 54 */ "voice oohs",
197 /* 55 */ "synth voice",
198 /* 56 */ "orchestra hit",
204 /* 60 */ "muted trumpet",
205 /* 61 */ "french horn",
206 /* 62 */ "brass section",
207 /* 63 */ "synthbrass 1",
208 /* 64 */ "synthbrass 2",
211 /* 65 */ "soprano sax",
213 /* 67 */ "tenor sax",
214 /* 68 */ "baritone sax",
216 /* 70 */ "english horn",
224 /* 76 */ "pan flute",
225 /* 77 */ "blown bottle",
226 /* 78 */ "skakuhachi",
230 /* (81-88 synth lead) */
231 /* 81 */ "lead 1 (square)",
232 /* 82 */ "lead 2 (sawtooth)",
233 /* 83 */ "lead 3 (calliope)",
234 /* 84 */ "lead 4 (chiff)",
235 /* 85 */ "lead 5 (charang)",
236 /* 86 */ "lead 6 (voice)",
237 /* 87 */ "lead 7 (fifths)",
238 /* 88 */ "lead 8 (bass+lead)",
240 /* (89-96 synth pad) */
241 /* 89 */ "pad 1 (new age)",
242 /* 90 */ "pad 2 (warm)",
243 /* 91 */ "pad 3 (polysynth)",
244 /* 92 */ "pad 4 (choir)",
245 /* 93 */ "pad 5 (bowed)",
246 /* 94 */ "pad 6 (metallic)",
247 /* 95 */ "pad 7 (halo)",
248 /* 96 */ "pad 8 (sweep)",
250 /* (97-104 synth effects) */
251 /* 97 */ "fx 1 (rain)",
252 /* 98 */ "fx 2 (soundtrack)",
253 /* 99 */ "fx 3 (crystal)",
254 /* 100 */ "fx 4 (atmosphere)",
255 /* 101 */ "fx 5 (brightness)",
256 /* 102 */ "fx 6 (goblins)",
257 /* 103 */ "fx 7 (echoes)",
258 /* 104 */ "fx 8 (sci-fi)",
260 /* (105-112 ethnic) */
263 /* 107 */ "shamisen",
270 /* (113-120 percussive) */
271 /* 113 */ "tinkle bell",
273 /* 115 */ "steel drums",
274 /* 116 */ "woodblock",
275 /* 117 */ "taiko drum",
276 /* 118 */ "melodic tom",
277 /* 119 */ "synth drum",
278 /* 120 */ "reverse cymbal",
280 /* (121-128 sound effects) */
281 /* 121 */ "guitar fret noise",
282 /* 122 */ "breath noise",
283 /* 123 */ "seashore",
284 /* 124 */ "bird tweet",
285 /* 125 */ "telephone ring",
286 /* 126 */ "helicopter",
287 /* 127 */ "applause",
292 Midi_instrument::Midi_instrument (int channel_i, String instrument_str)
295 instrument_str_ = instrument_str;
296 instrument_str_.to_lower ();
297 channel_i_ = channel_i;
300 Midi_item::~Midi_item ()
305 Midi_instrument::str () const
307 Byte program_byte = 0;
308 for (int i = 0; instrument_name_sz_a_[i]; i++)
309 if (instrument_str_ == String (instrument_name_sz_a_[ i ]))
311 program_byte = (Byte)i;
315 String str = to_str ((char) (0xc0 + channel_i_));
316 str += to_str ((char)program_byte);
320 Midi_item::Midi_item (Audio_item* audio_item_l)
322 audio_item_l_ = audio_item_l;
327 Midi_item::i2varint_str (int i)
329 int buffer_i = i & 0x7f;
330 while ( (i >>= 7) > 0)
334 buffer_i += (i & 0x7f);
340 str += to_str ((char)buffer_i);
349 Midi_key::Midi_key (Audio_item* audio_item_l)
350 : Midi_item (audio_item_l)
355 Midi_key::str () const
357 Key_change_req* k = dynamic_cast <Key_change_req *> (audio_item_l_->req_l_);
358 int sharps_i = k->sharps_i ();
359 int flats_i = k->flats_i ();
361 // midi cannot handle non-conventional keys
362 if (flats_i && sharps_i)
364 String str = _f ("unconventional key: flats: %d, sharps: %d", flats_i,
366 flats_i = sharps_i = 0;
368 int accidentals_i = sharps_i - flats_i;
370 String str = "ff5902";
371 str += String_convert::i2hex_str (accidentals_i, 2, '0');
372 int minor_i = k->minor_b ();
373 str += String_convert::i2hex_str (minor_i, 2, '0');
374 return String_convert::hex2bin_str (str);
377 Midi_time_signature::Midi_time_signature (Audio_item* audio_item_l)
378 : Midi_item (audio_item_l)
380 clocks_per_1_i_ = 18;
384 Midi_time_signature::str () const
386 Time_signature_change_req* m = dynamic_cast <Time_signature_change_req *> (audio_item_l_->req_l_);
387 int num_i = m->beats_i_;
388 int den_i = m->one_beat_i_;
390 String str = "ff5804";
391 str += String_convert::i2hex_str (num_i, 2, '0');
392 str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
393 str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
394 str += String_convert::i2hex_str (8, 2, '0');
395 return String_convert::hex2bin_str (str);
398 Midi_note::Midi_note (Audio_item* audio_item_l)
399 : Midi_item (audio_item_l)
401 dynamic_byte_ = 0x7f;
405 Midi_note::duration () const
407 Moment m = dynamic_cast <Rhythmic_req *> (audio_item_l_->req_l_)->duration ();
408 if (m < Moment (1, 1000))
410 warning (_ ("silly duration"));
417 Midi_note::pitch_i () const
419 int p = dynamic_cast <Melodic_req*> (audio_item_l_->req_l_)->pitch_.semitone_pitch ()
420 + ((Audio_note*)audio_item_l_)->transposing_i_;
423 warning (_ ("silly pitch"));
430 Midi_note::str () const
432 Byte status_byte = (char) (0x90 + channel_i_);
434 String str = to_str ((char)status_byte);
435 str += to_str ((char) (pitch_i () + c0_pitch_i_c_));
437 // poor man's staff dynamics:
438 str += to_str ((char) (dynamic_byte_ - 0x10 * channel_i_));
443 Midi_note_off::Midi_note_off (Midi_note* midi_note_l)
444 : Midi_item (midi_note_l->audio_item_l_)
446 // 0x64 is supposed to be neutral, but let's try
447 aftertouch_byte_ = 0x64;
448 channel_i_ = midi_note_l->channel_i_;
452 Midi_note_off::pitch_i () const
454 return dynamic_cast <Melodic_req *> (audio_item_l_->req_l_)->pitch_.semitone_pitch ()
455 + ((Audio_note*)audio_item_l_)->transposing_i_;
459 Midi_note_off::str () const
461 Byte status_byte = (char) (0x80 + channel_i_);
463 String str = to_str ((char)status_byte);
464 str += to_str ((char) (pitch_i () + Midi_note::c0_pitch_i_c_));
465 str += to_str ((char)aftertouch_byte_);
469 Midi_tempo::Midi_tempo (Audio_item* audio_item_l)
470 : Midi_item (audio_item_l)
472 per_minute_4_i_ = ( (Audio_tempo*)audio_item_l_)->per_minute_4_i_;
475 Midi_tempo::Midi_tempo (int per_minute_4_i)
478 per_minute_4_i_ = per_minute_4_i;
482 Midi_tempo::str () const
484 int useconds_per_4_i = 60 * (int)1e6 / per_minute_4_i_;
485 String str = "ff5103";
486 str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
487 return String_convert::hex2bin_str (str);
490 Midi_text::Midi_text (Audio_item* audio_item_l)
491 : Midi_item (audio_item_l)
493 text_str_ = ( (Audio_text*)audio_item_l_)->text_str_;
494 type_ = (Type) ( (Audio_text*)audio_item_l_)->type_;
497 Midi_text::Midi_text (Midi_text::Type type, String text_str)
500 text_str_ = text_str;
505 Midi_text::str () const
507 String str = "ff" + String_convert::i2hex_str (type_, 2, '0');
508 str = String_convert::hex2bin_str (str);
509 str += i2varint_str (text_str_.length_i ());
514 Midi_track::Midi_track ()
518 // 00 00 00 3B chunk length (59)
519 // 00 FF 58 04 04 02 18 08 time signature
520 // 00 FF 51 03 07 A1 20 tempo
522 // FF 59 02 sf mi Key Signature
533 char const* data_ch_C = ""
534 // "00" "ff58" "0404" "0218" "08"
535 // "00" "ff51" "0307" "a120"
536 // why a key at all, in midi?
538 // "00" "ff59" "02" "00" "00"
539 // key: F (scsii-menuetto)
540 // "00" "ff59" "02" "ff" "00"
544 // only for format 0 (currently using format 1)?
545 data_str += String_convert::hex2bin_str (data_ch_C);
547 char const* footer_ch_C = "00" "ff2f" "00";
548 String footer_str = String_convert::hex2bin_str (footer_ch_C);
550 set ("MTrk", data_str, footer_str);
554 Midi_track::add (Moment delta_time_mom, Midi_item* mitem_p)
556 assert (delta_time_mom >= Moment (0));
558 event_p_list_.bottom ().add (new Midi_event (delta_time_mom, mitem_p));
562 Midi_track::data_str () const
564 String str = Midi_chunk::data_str ();
565 if (check_debug && !monitor->silent_b ("Midistrings"))
567 for (PCursor<Midi_event*> i (event_p_list_); i.ok (); i++)
570 if (check_debug && !monitor->silent_b ("Midistrings"))
576 Midi_track::~Midi_track ()