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 length_str = String_convert::i2hex_str (data_str_.length_i ()
59 + footer_str_.length_i (), 8, '0');
60 length_str = String_convert::hex2bin_str (length_str);
67 Midi_duration::Midi_duration (Real seconds_f)
70 seconds_f_ = seconds_f;
74 Midi_duration::str () const
76 return String ("<duration: ") + String (seconds_f_) + ">";
79 Midi_event::Midi_event (Moment delta_mom, Midi_item* mitem_p)
81 delta_mom_ = delta_mom;
85 Midi_event::~Midi_event ()
92 Midi_event::str () const
94 int delta_i = delta_mom_ * Moment (Duration::division_1_i_s);
95 String delta_str = Midi_item::i2varint_str (delta_i);
96 String mitem_str = mitem_p_->str ();
97 assert (mitem_str.length_i ());
98 return delta_str + mitem_str;
102 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
107 String format_str = String_convert::i2hex_str (format_i, 4, '0');
108 str += String_convert::hex2bin_str (format_str);
110 String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
111 str += String_convert::hex2bin_str (tracks_str);
113 String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
114 str += String_convert::hex2bin_str (tempo_str);
116 set ("MThd", str, "");
119 char const* const instrument_name_sz_a_[ ] = {
121 /* default is usually piano */
125 /* 1 */ "acoustic grand",
126 /* 2 */ "bright acoustic",
127 /* 3 */ "electric grand",
128 /* 4 */ "honky-tonk",
129 /* 5 */ "electric piano 1",
130 /* 6 */ "electric piano 2",
131 /* 7 */ "harpsichord",
134 /* (9-16 chrom percussion) */
136 /* 10 */ "glockenspiel",
137 /* 11 */ "music box",
138 /* 12 */ "vibraphone",
140 /* 14 */ "xylophone",
141 /* 15 */ "tubular bells",
145 /* 17 */ "drawbar organ",
146 /* 18 */ "percussive organ",
147 /* 19 */ "rock organ",
148 /* 20 */ "church organ",
149 /* 21 */ "reed organ",
150 /* 22 */ "accoridan",
151 /* 23 */ "harmonica",
152 /* 24 */ "tango accordian",
155 /* 25 */ "acoustic guitar (nylon)",
156 /* 26 */ "acoustic guitar (steel)",
157 /* 27 */ "electric guitar (jazz)",
158 /* 28 */ "electric guitar (clean)",
159 /* 29 */ "electric guitar (muted)",
160 /* 30 */ "overdriven guitar",
161 /* 31 */ "distortion guitar",
162 /* 32 */ "guitar harmonics",
165 /* 33 */ "acoustic bass",
166 /* 34 */ "electric bass (finger)",
167 /* 35 */ "electric bass (pick)",
168 /* 36 */ "fretless bass",
169 /* 37 */ "slap bass 1",
170 /* 38 */ "slap bass 2",
171 /* 39 */ "synth bass 1",
172 /* 40 */ "synth bass 2",
174 /* (41-48 strings) */
178 /* 44 */ "contrabass",
179 /* 45 */ "tremolo strings",
180 /* 46 */ "pizzicato strings",
181 /* 47 */ "orchestral strings",
184 /* (49-56 ensemble) */
185 /* 49 */ "string ensemble 1",
186 /* 50 */ "string ensemble 2",
187 /* 51 */ "synthstrings 1",
188 /* 52 */ "synthstrings 2",
189 /* 53 */ "choir aahs",
190 /* 54 */ "voice oohs",
191 /* 55 */ "synth voice",
192 /* 56 */ "orchestra hit",
198 /* 60 */ "muted trumpet",
199 /* 61 */ "french horn",
200 /* 62 */ "brass section",
201 /* 63 */ "synthbrass 1",
202 /* 64 */ "synthbrass 2",
205 /* 65 */ "soprano sax",
207 /* 67 */ "tenor sax",
208 /* 68 */ "baritone sax",
210 /* 70 */ "english horn",
218 /* 76 */ "pan flute",
219 /* 77 */ "blown bottle",
220 /* 78 */ "skakuhachi",
224 /* (81-88 synth lead) */
225 /* 81 */ "lead 1 (square)",
226 /* 82 */ "lead 2 (sawtooth)",
227 /* 83 */ "lead 3 (calliope)",
228 /* 84 */ "lead 4 (chiff)",
229 /* 85 */ "lead 5 (charang)",
230 /* 86 */ "lead 6 (voice)",
231 /* 87 */ "lead 7 (fifths)",
232 /* 88 */ "lead 8 (bass+lead)",
234 /* (89-96 synth pad) */
235 /* 89 */ "pad 1 (new age)",
236 /* 90 */ "pad 2 (warm)",
237 /* 91 */ "pad 3 (polysynth)",
238 /* 92 */ "pad 4 (choir)",
239 /* 93 */ "pad 5 (bowed)",
240 /* 94 */ "pad 6 (metallic)",
241 /* 95 */ "pad 7 (halo)",
242 /* 96 */ "pad 8 (sweep)",
244 /* (97-104 synth effects) */
245 /* 97 */ "fx 1 (rain)",
246 /* 98 */ "fx 2 (soundtrack)",
247 /* 99 */ "fx 3 (crystal)",
248 /* 100 */ "fx 4 (atmosphere)",
249 /* 101 */ "fx 5 (brightness)",
250 /* 102 */ "fx 6 (goblins)",
251 /* 103 */ "fx 7 (echoes)",
252 /* 104 */ "fx 8 (sci-fi)",
254 /* (105-112 ethnic) */
257 /* 107 */ "shamisen",
264 /* (113-120 percussive) */
265 /* 113 */ "tinkle bell",
267 /* 115 */ "steel drums",
268 /* 116 */ "woodblock",
269 /* 117 */ "taiko drum",
270 /* 118 */ "melodic tom",
271 /* 119 */ "synth drum",
272 /* 120 */ "reverse cymbal",
274 /* (121-128 sound effects) */
275 /* 121 */ "guitar fret noise",
276 /* 122 */ "breath noise",
277 /* 123 */ "seashore",
278 /* 124 */ "bird tweet",
279 /* 125 */ "telephone ring",
280 /* 126 */ "helicopter",
281 /* 127 */ "applause",
286 Midi_instrument::Midi_instrument (int channel_i, String instrument_str)
289 instrument_str_ = instrument_str;
290 instrument_str_.to_lower ();
291 channel_i_ = channel_i;
294 Midi_item::~Midi_item ()
299 Midi_instrument::str () const
301 Byte program_byte = 0;
302 for (int i = 0; instrument_name_sz_a_[i]; i++)
303 if (instrument_str_ == String (instrument_name_sz_a_[ i ]))
305 program_byte = (Byte)i;
309 String str = String ( (char) (0xc0 + channel_i_));
310 str += String ( (char)program_byte);
314 Midi_item::Midi_item (Audio_item* audio_item_l)
316 audio_item_l_ = audio_item_l;
321 Midi_item::i2varint_str (int i)
323 int buffer_i = i & 0x7f;
324 while ( (i >>= 7) > 0)
328 buffer_i += (i & 0x7f);
334 str += (char)buffer_i;
343 Midi_key::Midi_key (Audio_item* audio_item_l)
344 : Midi_item (audio_item_l)
349 Midi_key::str () const
351 Key_change_req* k = audio_item_l_->req_l_->command ()->keychange ();
352 int sharps_i = k->sharps_i ();
353 int flats_i = k->flats_i ();
355 // midi cannot handle non-conventional keys
356 if (flats_i && sharps_i)
358 int accidentals_i = sharps_i - flats_i;
360 String str = "ff5902";
361 str += String_convert::i2hex_str (accidentals_i, 2, '0');
362 int minor_i = k->minor_b ();
363 str += String_convert::i2hex_str (minor_i, 2, '0');
364 return String_convert::hex2bin_str (str);
367 Midi_meter::Midi_meter (Audio_item* audio_item_l)
368 : Midi_item (audio_item_l)
370 clocks_per_1_i_ = 18;
374 Midi_meter::str () const
376 Meter_change_req* m = audio_item_l_->req_l_->command ()->meterchange ();
377 int num_i = m->beats_i_;
378 int den_i = m->one_beat_i_;
380 String str = "ff5804";
381 str += String_convert::i2hex_str (num_i, 2, '0');
382 str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
383 str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
384 str += String_convert::i2hex_str (8, 2, '0');
385 return String_convert::hex2bin_str (str);
388 Midi_note::Midi_note (Audio_item* audio_item_l)
389 : Midi_item (audio_item_l)
391 dynamic_byte_ = 0x7f;
395 Midi_note::duration () const
397 return audio_item_l_->req_l_->musical ()->rhythmic ()->duration ();
401 Midi_note::pitch_i () const
403 return audio_item_l_->req_l_->musical ()->melodic ()->pitch ();
407 Midi_note::str () const
409 if (pitch_i () == INT_MAX)
412 Byte status_byte = (char) (0x90 + channel_i_);
414 String str = String ( (char)status_byte);
415 str += (char) (pitch_i () + c0_pitch_i_c_);
417 // poor man's staff dynamics:
418 str += (char) (dynamic_byte_ - 0x10 * channel_i_);
423 Midi_note_off::Midi_note_off (Midi_note* midi_note_l)
424 : Midi_item (midi_note_l->audio_item_l_)
426 // 0x64 is supposed to be neutral, but let's try
427 aftertouch_byte_ = 0x64;
428 channel_i_ = midi_note_l->channel_i_;
432 Midi_note_off::pitch_i () const
434 return audio_item_l_->req_l_->musical ()->melodic ()->pitch ();
438 Midi_note_off::str () const
440 if (pitch_i () == INT_MAX)
443 Byte status_byte = (char) (0x80 + channel_i_);
445 String str = String ( (char)status_byte);
446 str += (char) (pitch_i () + Midi_note::c0_pitch_i_c_);
447 str += (char)aftertouch_byte_;
451 Midi_tempo::Midi_tempo (Audio_item* audio_item_l)
452 : Midi_item (audio_item_l)
454 per_minute_4_i_ = ( (Audio_tempo*)audio_item_l_)->per_minute_4_i_;
457 Midi_tempo::Midi_tempo (int per_minute_4_i)
460 per_minute_4_i_ = per_minute_4_i;
464 Midi_tempo::str () const
466 int useconds_per_4_i = 60 * (int)1e6 / per_minute_4_i_;
467 String str = "ff5103";
468 str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
469 return String_convert::hex2bin_str (str);
472 Midi_text::Midi_text (Audio_item* audio_item_l)
473 : Midi_item (audio_item_l)
475 text_str_ = ( (Audio_text*)audio_item_l_)->text_str_;
476 type_ = (Type) ( (Audio_text*)audio_item_l_)->type_;
479 Midi_text::Midi_text (Midi_text::Type type, String text_str)
482 text_str_ = text_str;
487 Midi_text::str () const
489 String str = "ff" + String_convert::i2hex_str (type_, 2, '0');
490 str = String_convert::hex2bin_str (str);
491 str += i2varint_str (text_str_.length_i ());
496 Midi_track::Midi_track ()
500 // 00 00 00 3B chunk length (59)
501 // 00 FF 58 04 04 02 18 08 time signature
502 // 00 FF 51 03 07 A1 20 tempo
504 // FF 59 02 sf mi Key Signature
515 char const* data_ch_C = ""
516 // "00" "ff58" "0404" "0218" "08"
517 // "00" "ff51" "0307" "a120"
518 // why a key at all, in midi?
520 // "00" "ff59" "02" "00" "00"
521 // key: F (scsii-menuetto)
522 // "00" "ff59" "02" "ff" "00"
526 // only for format 0 (currently using format 1)?
527 data_str += String_convert::hex2bin_str (data_ch_C);
529 char const* footer_ch_C = "00" "ff2f" "00";
530 String footer_str = String_convert::hex2bin_str (footer_ch_C);
532 set ("MTrk", data_str, footer_str);
536 Midi_track::add (Moment delta_time_mom, Midi_item* mitem_p)
538 assert (delta_time_mom >= 0);
539 event_p_list_.bottom ().add (new Midi_event (delta_time_mom, mitem_p));
543 Midi_track::data_str () const
545 String str = Midi_chunk::data_str ();
546 if (check_debug && !monitor->silent_b ("Midistrings"))
548 for (PCursor<Midi_event*> i (event_p_list_); i.ok (); i++)
551 if (check_debug && !monitor->silent_b ("Midistrings"))
557 Midi_track::~Midi_track ()