2 midi-item.cc -- implement Midi items.
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2000 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;
48 Midi_chunk::set (String header_str, String data_str, String footer_str)
51 footer_str_ = footer_str;
52 header_str_ = header_str;
56 Midi_chunk::data_str () const
62 Midi_chunk::str () const
64 String str = header_str_;
65 String dat = data_str ();
66 String length_str = String_convert::i2hex_str (dat.length_i ()
67 + footer_str_.length_i (), 8, '0');
68 length_str = String_convert::hex2bin_str (length_str);
75 Midi_duration::Midi_duration (Real seconds_f)
77 seconds_f_ = seconds_f;
81 Midi_duration::str () const
83 return String ("<duration: ") + to_str (seconds_f_) + ">";
86 Midi_event::Midi_event (Moment delta_mom, Midi_item* midi_p)
88 delta_mom_ = delta_mom;
93 Midi_event::str () const
95 int delta_i = delta_mom_ * Moment (384 * 4); // ugh.
97 String delta_str = Midi_item::i2varint_str (delta_i);
98 String midi_str = midi_p_->str ();
99 assert (midi_str.length_i ());
100 return delta_str + midi_str;
104 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
108 String format_str = String_convert::i2hex_str (format_i, 4, '0');
109 str += String_convert::hex2bin_str (format_str);
111 String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
112 str += String_convert::hex2bin_str (tracks_str);
114 String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
115 str += String_convert::hex2bin_str (tempo_str);
117 set ("MThd", str, "");
121 /* why doesn't this start at 0 ?
125 char const* const instrument_name_sz_a_[ ] = {
126 /* default is usually piano */
130 /* 1 */ "acoustic grand",
131 /* 2 */ "bright acoustic",
132 /* 3 */ "electric grand",
133 /* 4 */ "honky-tonk",
134 /* 5 */ "electric piano 1",
135 /* 6 */ "electric piano 2",
136 /* 7 */ "harpsichord",
139 /* (9-16 chrom percussion) */
141 /* 10 */ "glockenspiel",
142 /* 11 */ "music box",
143 /* 12 */ "vibraphone",
145 /* 14 */ "xylophone",
146 /* 15 */ "tubular bells",
150 /* 17 */ "drawbar organ",
151 /* 18 */ "percussive organ",
152 /* 19 */ "rock organ",
153 /* 20 */ "church organ",
154 /* 21 */ "reed organ",
155 /* 22 */ "accordion",
156 /* 23 */ "harmonica",
157 /* 24 */ "concertina",
160 /* 25 */ "acoustic guitar (nylon)",
161 /* 26 */ "acoustic guitar (steel)",
162 /* 27 */ "electric guitar (jazz)",
163 /* 28 */ "electric guitar (clean)",
164 /* 29 */ "electric guitar (muted)",
165 /* 30 */ "overdriven guitar",
166 /* 31 */ "distorted guitar",
167 /* 32 */ "guitar harmonics",
170 /* 33 */ "acoustic bass",
171 /* 34 */ "electric bass (finger)",
172 /* 35 */ "electric bass (pick)",
173 /* 36 */ "fretless bass",
174 /* 37 */ "slap bass 1",
175 /* 38 */ "slap bass 2",
176 /* 39 */ "synth bass 1",
177 /* 40 */ "synth bass 2",
179 /* (41-48 strings) */
183 /* 44 */ "contrabass",
184 /* 45 */ "tremolo strings",
185 /* 46 */ "pizzicato strings",
186 /* 47 */ "orchestral strings",
189 /* (49-56 ensemble) */
190 /* 49 */ "string ensemble 1",
191 /* 50 */ "string ensemble 2",
192 /* 51 */ "synthstrings 1",
193 /* 52 */ "synthstrings 2",
194 /* 53 */ "choir aahs",
195 /* 54 */ "voice oohs",
196 /* 55 */ "synth voice",
197 /* 56 */ "orchestra hit",
203 /* 60 */ "muted trumpet",
204 /* 61 */ "french horn",
205 /* 62 */ "brass section",
206 /* 63 */ "synthbrass 1",
207 /* 64 */ "synthbrass 2",
210 /* 65 */ "soprano sax",
212 /* 67 */ "tenor sax",
213 /* 68 */ "baritone sax",
215 /* 70 */ "english horn",
223 /* 76 */ "pan flute",
224 /* 77 */ "blown bottle",
225 /* 78 */ "skakuhachi",
229 /* (81-88 synth lead) */
230 /* 81 */ "lead 1 (square)",
231 /* 82 */ "lead 2 (sawtooth)",
232 /* 83 */ "lead 3 (calliope)",
233 /* 84 */ "lead 4 (chiff)",
234 /* 85 */ "lead 5 (charang)",
235 /* 86 */ "lead 6 (voice)",
236 /* 87 */ "lead 7 (fifths)",
237 /* 88 */ "lead 8 (bass+lead)",
239 /* (89-96 synth pad) */
240 /* 89 */ "pad 1 (new age)",
241 /* 90 */ "pad 2 (warm)",
242 /* 91 */ "pad 3 (polysynth)",
243 /* 92 */ "pad 4 (choir)",
244 /* 93 */ "pad 5 (bowed)",
245 /* 94 */ "pad 6 (metallic)",
246 /* 95 */ "pad 7 (halo)",
247 /* 96 */ "pad 8 (sweep)",
249 /* (97-104 synth effects) */
250 /* 97 */ "fx 1 (rain)",
251 /* 98 */ "fx 2 (soundtrack)",
252 /* 99 */ "fx 3 (crystal)",
253 /* 100 */ "fx 4 (atmosphere)",
254 /* 101 */ "fx 5 (brightness)",
255 /* 102 */ "fx 6 (goblins)",
256 /* 103 */ "fx 7 (echoes)",
257 /* 104 */ "fx 8 (sci-fi)",
259 /* (105-112 ethnic) */
262 /* 107 */ "shamisen",
269 /* (113-120 percussive) */
270 /* 113 */ "tinkle bell",
272 /* 115 */ "steel drums",
273 /* 116 */ "woodblock",
274 /* 117 */ "taiko drum",
275 /* 118 */ "melodic tom",
276 /* 119 */ "synth drum",
277 /* 120 */ "reverse cymbal",
279 /* (121-128 sound effects) */
280 /* 121 */ "guitar fret noise",
281 /* 122 */ "breath noise",
282 /* 123 */ "seashore",
283 /* 124 */ "bird tweet",
284 /* 125 */ "telephone ring",
285 /* 126 */ "helicopter",
286 /* 127 */ "applause",
291 Midi_instrument::Midi_instrument (Audio_instrument* a)
294 audio_l_->str_.to_lower ();
298 Midi_instrument::str () const
300 Byte program_byte = 0;
302 for (int i = 0; !found && instrument_name_sz_a_[i]; i++)
303 if (audio_l_->str_ == String (instrument_name_sz_a_[ i ]))
305 program_byte = (Byte)i;
311 warning (_f ("no such instrument: `%s'", audio_l_->str_.ch_C ()));
314 String str = to_str ((char) (0xc0 + channel_i_));
315 str += to_str ((char)program_byte);
319 Midi_item::Midi_item ()
324 Midi_item::~Midi_item ()
329 Midi_item::i2varint_str (int i)
331 int buffer_i = i & 0x7f;
332 while ( (i >>= 7) > 0)
336 buffer_i += (i & 0x7f);
342 str += to_str ((char)buffer_i);
351 Midi_key::Midi_key (Audio_key*a)
357 Midi_key::str () const
359 int sharps_i = audio_l_->key_.sharps_i ();
360 int flats_i = audio_l_->key_.flats_i ();
362 // midi cannot handle non-conventional keys
363 if (flats_i && sharps_i)
365 String str = _f ("unconventional key: flats: %d, sharps: %d", flats_i,
367 flats_i = sharps_i = 0;
369 int accidentals_i = sharps_i - flats_i;
371 String str = "ff5902";
372 str += String_convert::i2hex_str (accidentals_i, 2, '0');
373 str += String_convert::i2hex_str ((int)audio_l_->key_.minor_b (), 2, '0');
374 return String_convert::hex2bin_str (str);
377 Midi_time_signature::Midi_time_signature (Audio_time_signature* a)
380 clocks_per_1_i_ = 18;
384 Midi_time_signature::str () const
386 int num_i = audio_l_->beats_i_;
387 int den_i = audio_l_->one_beat_i_;
389 String str = "ff5804";
390 str += String_convert::i2hex_str (num_i, 2, '0');
391 str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
392 str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
393 str += String_convert::i2hex_str (8, 2, '0');
394 return String_convert::hex2bin_str (str);
397 Midi_note::Midi_note (Audio_note* a)
400 dynamic_byte_ = 0x7f;
404 Midi_note::length_mom () const
406 Moment m = audio_l_->length_mom_;
408 if (m < Moment (1, 1000))
410 warning (_ ("silly duration"));
418 Midi_note::pitch_i () const
420 int p = audio_l_->pitch_.semitone_pitch () + audio_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 str += to_str ((char)dynamic_byte_);
441 Midi_note_off::Midi_note_off (Midi_note* n)
442 : Midi_note (n->audio_l_)
445 channel_i_ = n->channel_i_;
447 // Anybody who hears any difference, or knows how this works?
448 // 0 should definitely be avoided, notes stick on some sound cards.
449 // 64 is supposed to be neutral
450 aftertouch_byte_ = 64;
455 Midi_note_off::str () const
457 Byte status_byte = (char) (0x80 + channel_i_);
459 String str = to_str ((char)status_byte);
460 str += to_str ((char) (pitch_i () + Midi_note::c0_pitch_i_c_));
461 str += to_str ((char)aftertouch_byte_);
465 Midi_dynamic::Midi_dynamic (Audio_dynamic* a)
471 Midi_dynamic::str () const
473 Byte status_byte = (char) (0xB0 + channel_i_);
474 String str = to_str ((char)status_byte);
477 Main volume controller (per channel):
481 static Real const full_scale = 127;
483 int volume = (int)(audio_l_->volume_*full_scale);
486 if (volume > full_scale)
487 volume = (int)full_scale;
489 str += to_str ((char)0x07);
490 str += to_str ((char)volume);
494 Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal* a)
500 Midi_piano_pedal::str () const
502 Byte status_byte = (char) (0xB0 + channel_i_);
503 String str = to_str ((char)status_byte);
505 if (audio_l_->type_str_ == "Sostenuto")
506 str += to_str ((char)0x42);
507 else if (audio_l_->type_str_ == "Sustain")
508 str += to_str ((char)0x40);
509 else if (audio_l_->type_str_ == "UnaChorda")
510 str += to_str ((char)0x43);
512 int pedal = ((1 - audio_l_->dir_) / 2 ) * 0x7f;
513 str += to_str ((char)pedal);
517 Midi_tempo::Midi_tempo (Audio_tempo* a)
523 Midi_tempo::str () const
525 int useconds_per_4_i = 60 * (int)1e6 / audio_l_->per_minute_4_i_;
526 String str = "ff5103";
527 str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
528 return String_convert::hex2bin_str (str);
531 Midi_text::Midi_text (Audio_text* a)
537 Midi_text::Midi_text (Midi_text::Type type, String text_str)
540 text_str_ = text_str;
546 Midi_text::str () const
548 String str = "ff" + String_convert::i2hex_str (audio_l_->type_, 2, '0');
549 str = String_convert::hex2bin_str (str);
550 str += i2varint_str (audio_l_->text_str_.length_i ());
551 str += audio_l_->text_str_;
555 Midi_track::Midi_track ()
559 // 00 00 00 3B chunk length (59)
560 // 00 FF 58 04 04 02 18 08 time signature
561 // 00 FF 51 03 07 A1 20 tempo
563 // FF 59 02 sf mi Key Signature
574 char const* data_ch_C = ""
575 // "00" "ff58" "0404" "0218" "08"
576 // "00" "ff51" "0307" "a120"
577 // why a key at all, in midi?
579 // "00" "ff59" "02" "00" "00"
580 // key: F (scsii-menuetto)
581 // "00" "ff59" "02" "ff" "00"
585 // only for format 0 (currently using format 1)?
586 data_str += String_convert::hex2bin_str (data_ch_C);
588 char const* footer_ch_C = "00" "ff2f" "00";
589 String footer_str = String_convert::hex2bin_str (footer_ch_C);
591 set ("MTrk", data_str, footer_str);
595 Midi_track::add (Moment delta_time_mom, Midi_item* midi_p)
597 assert (delta_time_mom >= Moment (0));
599 Midi_event * e = new Midi_event (delta_time_mom, midi_p);
600 event_p_list_.append (new Killing_cons<Midi_event> (e, 0));
604 Midi_track::data_str () const
606 String str = Midi_chunk::data_str ();
607 if (flower_dstream && !flower_dstream->silent_b ("Midistrings"))
609 for (Cons<Midi_event> *i=event_p_list_.head_; i; i = i->next_)
611 str += i->car_->str ();
612 if (flower_dstream && !flower_dstream->silent_b ("Midistrings"))