2 midi-item.cc -- implement Midi items.
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2001 Jan Nieuwenhuizen <janneke@gnu.org>
13 #include "string-convert.hh"
14 #include "midi-item.hh"
15 #include "midi-stream.hh"
16 #include "audio-item.hh"
17 #include "duration.hh"
19 #include "killing-cons.tcc"
22 Midi_item::midi_p (Audio_item* a)
24 if (Audio_key* i = dynamic_cast<Audio_key*> (a))
25 return new Midi_key (i);
26 else if (Audio_instrument* i = dynamic_cast<Audio_instrument*> (a))
27 return i->str_.length_i () ? new Midi_instrument (i) : 0;
28 else if (Audio_note* i = dynamic_cast<Audio_note*> (a))
29 return new Midi_note (i);
30 else if (Audio_dynamic* i = dynamic_cast<Audio_dynamic*> (a))
31 return new Midi_dynamic (i);
32 else if (Audio_piano_pedal* i = dynamic_cast<Audio_piano_pedal*> (a))
33 return new Midi_piano_pedal (i);
34 else if (Audio_tempo* i = dynamic_cast<Audio_tempo*> (a))
35 return new Midi_tempo (i);
36 else if (Audio_time_signature* i = dynamic_cast<Audio_time_signature*> (a))
37 return new Midi_time_signature (i);
38 else if (Audio_text* i = dynamic_cast<Audio_text*> (a))
39 //return i->text_str_.length_i () ? new Midi_text (i) : 0;
40 return new Midi_text (i);
49 Midi_chunk::set (String header_str, String data_str, String footer_str)
52 footer_str_ = footer_str;
53 header_str_ = header_str;
57 Midi_chunk::data_str () const
63 Midi_chunk::str () const
65 String str = header_str_;
66 String dat = data_str ();
67 String length_str = String_convert::i2hex_str (dat.length_i ()
68 + footer_str_.length_i (), 8, '0');
69 length_str = String_convert::hex2bin_str (length_str);
76 Midi_duration::Midi_duration (Real seconds_f)
78 seconds_f_ = seconds_f;
82 Midi_duration::str () const
84 return String ("<duration: ") + to_str (seconds_f_) + ">";
87 Midi_event::Midi_event (Moment delta_mom, Midi_item* midi_p)
89 delta_mom_ = delta_mom;
94 Midi_event::str () const
96 int delta_i = delta_mom_ * Moment (384 * 4); // ugh.
98 String delta_str = Midi_item::i2varint_str (delta_i);
99 String midi_str = midi_p_->str ();
100 assert (midi_str.length_i ());
101 return delta_str + midi_str;
105 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
109 String format_str = String_convert::i2hex_str (format_i, 4, '0');
110 str += String_convert::hex2bin_str (format_str);
112 String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
113 str += String_convert::hex2bin_str (tracks_str);
115 String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
116 str += String_convert::hex2bin_str (tempo_str);
118 set ("MThd", str, "");
122 /* why doesn't this start at 0 ?
126 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 (Audio_instrument* a)
295 audio_l_->str_.to_lower ();
299 Midi_instrument::str () const
301 Byte program_byte = 0;
303 for (int i = 0; !found && instrument_name_sz_a_[i]; i++)
304 if (audio_l_->str_ == String (instrument_name_sz_a_[ i ]))
306 program_byte = (Byte)i;
312 warning (_f ("no such instrument: `%s'", audio_l_->str_.ch_C ()));
315 String str = to_str ((char) (0xc0 + channel_i_));
316 str += to_str ((char)program_byte);
320 Midi_item::Midi_item ()
325 Midi_item::~Midi_item ()
330 Midi_item::i2varint_str (int i)
332 int buffer_i = i & 0x7f;
333 while ( (i >>= 7) > 0)
337 buffer_i += (i & 0x7f);
343 str += to_str ((char)buffer_i);
352 Midi_key::Midi_key (Audio_key*a)
358 Midi_key::str () const
361 int sharps_i = 0; //audio_l_->key_.sharps_i ();
362 int flats_i = 0; //audio_l_->key_.flats_i ();
364 // midi cannot handle non-conventional keys
365 if (flats_i && sharps_i)
367 String str = _f ("unconventional key: flats: %d, sharps: %d", flats_i,
369 flats_i = sharps_i = 0;
371 int accidentals_i = sharps_i - flats_i;
373 String str = "ff5902";
374 str += String_convert::i2hex_str (accidentals_i, 2, '0');
376 // (int)audio_l_->key_.minor_b ()
377 str += String_convert::i2hex_str (0, 2, '0');
378 return String_convert::hex2bin_str (str);
381 Midi_time_signature::Midi_time_signature (Audio_time_signature* a)
384 clocks_per_1_i_ = 18;
388 Midi_time_signature::str () const
390 int num_i = audio_l_->beats_i_;
391 int den_i = audio_l_->one_beat_i_;
393 String str = "ff5804";
394 str += String_convert::i2hex_str (num_i, 2, '0');
395 str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
396 str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
397 str += String_convert::i2hex_str (8, 2, '0');
398 return String_convert::hex2bin_str (str);
401 Midi_note::Midi_note (Audio_note* a)
404 dynamic_byte_ = 0x7f;
408 Midi_note::length_mom () const
410 Moment m = audio_l_->length_mom_;
412 if (m < Moment (1, 1000))
414 warning (_ ("silly duration"));
422 Midi_note::pitch_i () const
424 int p = audio_l_->pitch_.semitone_pitch () + audio_l_->transposing_i_;
427 warning (_ ("silly pitch"));
434 Midi_note::str () const
436 Byte status_byte = (char) (0x90 + channel_i_);
438 String str = to_str ((char)status_byte);
439 str += to_str ((char) (pitch_i () + c0_pitch_i_c_));
441 str += to_str ((char)dynamic_byte_);
445 Midi_note_off::Midi_note_off (Midi_note* n)
446 : Midi_note (n->audio_l_)
449 channel_i_ = n->channel_i_;
451 // Anybody who hears any difference, or knows how this works?
452 // 0 should definitely be avoided, notes stick on some sound cards.
453 // 64 is supposed to be neutral
455 aftertouch_byte_ = 64;
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_dynamic::Midi_dynamic (Audio_dynamic* a)
475 Midi_dynamic::str () const
477 Byte status_byte = (char) (0xB0 + channel_i_);
478 String str = to_str ((char)status_byte);
481 Main volume controller (per channel):
485 static Real const full_scale = 127;
487 int volume = (int)(audio_l_->volume_*full_scale);
490 if (volume > full_scale)
491 volume = (int)full_scale;
493 str += to_str ((char)0x07);
494 str += to_str ((char)volume);
498 Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal* a)
504 Midi_piano_pedal::str () const
506 Byte status_byte = (char) (0xB0 + channel_i_);
507 String str = to_str ((char)status_byte);
509 if (audio_l_->type_str_ == "Sostenuto")
510 str += to_str ((char)0x42);
511 else if (audio_l_->type_str_ == "Sustain")
512 str += to_str ((char)0x40);
513 else if (audio_l_->type_str_ == "UnaChorda")
514 str += to_str ((char)0x43);
516 int pedal = ((1 - audio_l_->dir_) / 2 ) * 0x7f;
517 str += to_str ((char)pedal);
521 Midi_tempo::Midi_tempo (Audio_tempo* a)
527 Midi_tempo::str () const
529 int useconds_per_4_i = 60 * (int)1e6 / audio_l_->per_minute_4_i_;
530 String str = "ff5103";
531 str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
532 return String_convert::hex2bin_str (str);
535 Midi_text::Midi_text (Audio_text* a)
541 Midi_text::str () const
543 String str = "ff" + String_convert::i2hex_str (audio_l_->type_, 2, '0');
544 str = String_convert::hex2bin_str (str);
545 str += i2varint_str (audio_l_->text_str_.length_i ());
546 str += audio_l_->text_str_;
550 Midi_track::Midi_track ()
554 // 00 00 00 3B chunk length (59)
555 // 00 FF 58 04 04 02 18 08 time signature
556 // 00 FF 51 03 07 A1 20 tempo
558 // FF 59 02 sf mi Key Signature
569 char const* data_ch_C = ""
570 // "00" "ff58" "0404" "0218" "08"
571 // "00" "ff51" "0307" "a120"
572 // why a key at all, in midi?
574 // "00" "ff59" "02" "00" "00"
575 // key: F (scsii-menuetto)
576 // "00" "ff59" "02" "ff" "00"
580 // only for format 0 (currently using format 1)?
581 data_str += String_convert::hex2bin_str (data_ch_C);
583 char const* footer_ch_C = "00" "ff2f" "00";
584 String footer_str = String_convert::hex2bin_str (footer_ch_C);
586 set ("MTrk", data_str, footer_str);
590 Midi_track::add (Moment delta_time_mom, Midi_item* midi_p)
592 assert (delta_time_mom >= Moment (0));
594 Midi_event * e = new Midi_event (delta_time_mom, midi_p);
595 event_p_list_.append (new Killing_cons<Midi_event> (e, 0));
599 Midi_track::data_str () const
601 String str = Midi_chunk::data_str ();
602 if (midi_debug_global_b)
604 for (Cons<Midi_event> *i=event_p_list_.head_; i; i = i->next_)
606 str += i->car_->str ();
607 if (midi_debug_global_b)