2 midi-item.cc -- implement Midi items.
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--1999 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"
23 Midi_chunk::Midi_chunk ()
29 Midi_chunk::set (String header_str, String data_str, String footer_str)
32 footer_str_ = footer_str;
33 header_str_ = header_str;
37 Midi_chunk::data_str () const
43 Midi_chunk::str () const
45 String str = header_str_;
46 String dat = data_str ();
48 String length_str = String_convert::i2hex_str (dat.length_i ()
51 String length_str = String_convert::i2hex_str (data_str_.length_i ()
53 + footer_str_.length_i (), 8, '0');
54 length_str = String_convert::hex2bin_str (length_str);
61 Midi_duration::Midi_duration (Real seconds_f)
64 seconds_f_ = seconds_f;
68 Midi_duration::str () const
70 return String ("<duration: ") + to_str (seconds_f_) + ">";
73 Midi_event::Midi_event (Moment delta_mom, Midi_item* mitem_p)
75 delta_mom_ = delta_mom;
79 Midi_event::~Midi_event ()
86 Midi_event::str () const
88 int delta_i = delta_mom_ * Moment (Duration::division_1_i_s);
89 String delta_str = Midi_item::i2varint_str (delta_i);
90 String mitem_str = mitem_p_->str ();
91 assert (mitem_str.length_i ());
92 return delta_str + mitem_str;
96 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
101 String format_str = String_convert::i2hex_str (format_i, 4, '0');
102 str += String_convert::hex2bin_str (format_str);
104 String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
105 str += String_convert::hex2bin_str (tracks_str);
107 String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
108 str += String_convert::hex2bin_str (tempo_str);
110 set ("MThd", str, "");
113 char const* const instrument_name_sz_a_[ ] = {
115 /* default is usually piano */
119 /* 1 */ "acoustic grand",
120 /* 2 */ "bright acoustic",
121 /* 3 */ "electric grand",
122 /* 4 */ "honky-tonk",
123 /* 5 */ "electric piano 1",
124 /* 6 */ "electric piano 2",
125 /* 7 */ "harpsichord",
128 /* (9-16 chrom percussion) */
130 /* 10 */ "glockenspiel",
131 /* 11 */ "music box",
132 /* 12 */ "vibraphone",
134 /* 14 */ "xylophone",
135 /* 15 */ "tubular bells",
139 /* 17 */ "drawbar organ",
140 /* 18 */ "percussive organ",
141 /* 19 */ "rock organ",
142 /* 20 */ "church organ",
143 /* 21 */ "reed organ",
144 /* 22 */ "accordion",
145 /* 23 */ "harmonica",
146 /* 24 */ "concertina",
149 /* 25 */ "acoustic guitar (nylon)",
150 /* 26 */ "acoustic guitar (steel)",
151 /* 27 */ "electric guitar (jazz)",
152 /* 28 */ "electric guitar (clean)",
153 /* 29 */ "electric guitar (muted)",
154 /* 30 */ "overdriven guitar",
155 /* 31 */ "distorted guitar",
156 /* 32 */ "guitar harmonics",
159 /* 33 */ "acoustic bass",
160 /* 34 */ "electric bass (finger)",
161 /* 35 */ "electric bass (pick)",
162 /* 36 */ "fretless bass",
163 /* 37 */ "slap bass 1",
164 /* 38 */ "slap bass 2",
165 /* 39 */ "synth bass 1",
166 /* 40 */ "synth bass 2",
168 /* (41-48 strings) */
172 /* 44 */ "contrabass",
173 /* 45 */ "tremolo strings",
174 /* 46 */ "pizzicato strings",
175 /* 47 */ "orchestral strings",
178 /* (49-56 ensemble) */
179 /* 49 */ "string ensemble 1",
180 /* 50 */ "string ensemble 2",
181 /* 51 */ "synthstrings 1",
182 /* 52 */ "synthstrings 2",
183 /* 53 */ "choir aahs",
184 /* 54 */ "voice oohs",
185 /* 55 */ "synth voice",
186 /* 56 */ "orchestra hit",
192 /* 60 */ "muted trumpet",
193 /* 61 */ "french horn",
194 /* 62 */ "brass section",
195 /* 63 */ "synthbrass 1",
196 /* 64 */ "synthbrass 2",
199 /* 65 */ "soprano sax",
201 /* 67 */ "tenor sax",
202 /* 68 */ "baritone sax",
204 /* 70 */ "english horn",
212 /* 76 */ "pan flute",
213 /* 77 */ "blown bottle",
214 /* 78 */ "skakuhachi",
218 /* (81-88 synth lead) */
219 /* 81 */ "lead 1 (square)",
220 /* 82 */ "lead 2 (sawtooth)",
221 /* 83 */ "lead 3 (calliope)",
222 /* 84 */ "lead 4 (chiff)",
223 /* 85 */ "lead 5 (charang)",
224 /* 86 */ "lead 6 (voice)",
225 /* 87 */ "lead 7 (fifths)",
226 /* 88 */ "lead 8 (bass+lead)",
228 /* (89-96 synth pad) */
229 /* 89 */ "pad 1 (new age)",
230 /* 90 */ "pad 2 (warm)",
231 /* 91 */ "pad 3 (polysynth)",
232 /* 92 */ "pad 4 (choir)",
233 /* 93 */ "pad 5 (bowed)",
234 /* 94 */ "pad 6 (metallic)",
235 /* 95 */ "pad 7 (halo)",
236 /* 96 */ "pad 8 (sweep)",
238 /* (97-104 synth effects) */
239 /* 97 */ "fx 1 (rain)",
240 /* 98 */ "fx 2 (soundtrack)",
241 /* 99 */ "fx 3 (crystal)",
242 /* 100 */ "fx 4 (atmosphere)",
243 /* 101 */ "fx 5 (brightness)",
244 /* 102 */ "fx 6 (goblins)",
245 /* 103 */ "fx 7 (echoes)",
246 /* 104 */ "fx 8 (sci-fi)",
248 /* (105-112 ethnic) */
251 /* 107 */ "shamisen",
258 /* (113-120 percussive) */
259 /* 113 */ "tinkle bell",
261 /* 115 */ "steel drums",
262 /* 116 */ "woodblock",
263 /* 117 */ "taiko drum",
264 /* 118 */ "melodic tom",
265 /* 119 */ "synth drum",
266 /* 120 */ "reverse cymbal",
268 /* (121-128 sound effects) */
269 /* 121 */ "guitar fret noise",
270 /* 122 */ "breath noise",
271 /* 123 */ "seashore",
272 /* 124 */ "bird tweet",
273 /* 125 */ "telephone ring",
274 /* 126 */ "helicopter",
275 /* 127 */ "applause",
280 Midi_instrument::Midi_instrument (int channel_i, String instrument_str)
283 instrument_str_ = instrument_str;
284 instrument_str_.to_lower ();
285 channel_i_ = channel_i;
288 Midi_item::~Midi_item ()
293 Midi_instrument::str () const
295 Byte program_byte = 0;
296 for (int i = 0; instrument_name_sz_a_[i]; i++)
297 if (instrument_str_ == String (instrument_name_sz_a_[ i ]))
299 program_byte = (Byte)i;
303 String str = to_str ((char) (0xc0 + channel_i_));
304 str += to_str ((char)program_byte);
308 Midi_item::Midi_item (Audio_item* audio_item_l)
310 audio_item_l_ = audio_item_l;
315 Midi_item::i2varint_str (int i)
317 int buffer_i = i & 0x7f;
318 while ( (i >>= 7) > 0)
322 buffer_i += (i & 0x7f);
328 str += to_str ((char)buffer_i);
337 Midi_key::Midi_key (Audio_item* audio_item_l)
338 : Midi_item (audio_item_l)
343 Midi_key::str () const
345 Key_change_req* k = dynamic_cast <Key_change_req *> (audio_item_l_->req_l_);
346 int sharps_i = k->sharps_i ();
347 int flats_i = k->flats_i ();
349 // midi cannot handle non-conventional keys
350 if (flats_i && sharps_i)
352 String str = _f ("unconventional key: flats: %d, sharps: %d", flats_i,
354 flats_i = sharps_i = 0;
356 int accidentals_i = sharps_i - flats_i;
358 String str = "ff5902";
359 str += String_convert::i2hex_str (accidentals_i, 2, '0');
360 int minor_i = k->minor_b ();
361 str += String_convert::i2hex_str (minor_i, 2, '0');
362 return String_convert::hex2bin_str (str);
365 Midi_time_signature::Midi_time_signature (Audio_item* audio_item_l)
366 : Midi_item (audio_item_l)
368 clocks_per_1_i_ = 18;
372 Midi_time_signature::str () const
374 Time_signature_change_req* m = dynamic_cast <Time_signature_change_req *> (audio_item_l_->req_l_);
375 int num_i = m->beats_i_;
376 int den_i = m->one_beat_i_;
378 String str = "ff5804";
379 str += String_convert::i2hex_str (num_i, 2, '0');
380 str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
381 str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
382 str += String_convert::i2hex_str (8, 2, '0');
383 return String_convert::hex2bin_str (str);
386 Midi_note::Midi_note (Audio_item* audio_item_l)
387 : Midi_item (audio_item_l)
389 dynamic_byte_ = 0x7f;
390 assert (dynamic_cast<Audio_note*> (audio_item_l));
394 Midi_note::length_mom () const
396 Moment m = dynamic_cast <Rhythmic_req *> (audio_item_l_->req_l_)->length_mom ();
397 if (m < Moment (1, 1000))
399 warning (_ ("silly duration"));
406 Midi_note::pitch_i () const
408 int p = dynamic_cast <Melodic_req*> (audio_item_l_->req_l_)->pitch_.semitone_pitch ()
409 + dynamic_cast<Audio_note*>(audio_item_l_)->transposing_i_;
412 warning (_ ("silly pitch"));
419 Midi_note::str () const
421 Byte status_byte = (char) (0x90 + channel_i_);
423 String str = to_str ((char)status_byte);
424 str += to_str ((char) (pitch_i () + c0_pitch_i_c_));
426 // poor man's staff dynamics:
427 str += to_str ((char) (dynamic_byte_ - 0x10 * channel_i_));
432 Midi_note_off::Midi_note_off (Midi_note* midi_note_l)
433 : Midi_item (midi_note_l->audio_item_l_)
435 // 0x64 is supposed to be neutral, but let's try
436 aftertouch_byte_ = 0x64;
437 channel_i_ = midi_note_l->channel_i_;
441 Midi_note_off::pitch_i () const
443 return dynamic_cast <Melodic_req *> (audio_item_l_->req_l_)->pitch_.semitone_pitch ()
444 + dynamic_cast<Audio_note*>(audio_item_l_)->transposing_i_;
448 Midi_note_off::str () const
450 Byte status_byte = (char) (0x80 + channel_i_);
452 String str = to_str ((char)status_byte);
453 str += to_str ((char) (pitch_i () + Midi_note::c0_pitch_i_c_));
454 str += to_str ((char)aftertouch_byte_);
458 Midi_tempo::Midi_tempo (Audio_item* audio_item_l)
459 : Midi_item (audio_item_l)
461 per_minute_4_i_ = dynamic_cast<Audio_tempo*>(audio_item_l_)->per_minute_4_i_;
464 Midi_tempo::Midi_tempo (int per_minute_4_i)
467 per_minute_4_i_ = per_minute_4_i;
471 Midi_tempo::str () const
473 int useconds_per_4_i = 60 * (int)1e6 / per_minute_4_i_;
474 String str = "ff5103";
475 str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
476 return String_convert::hex2bin_str (str);
479 Midi_text::Midi_text (Audio_item* audio_item_l)
480 : Midi_item (audio_item_l)
482 text_str_ = dynamic_cast<Audio_text*>(audio_item_l_)->text_str_;
483 type_ = (Type) dynamic_cast<Audio_text*>(audio_item_l_)->type_;
486 Midi_text::Midi_text (Midi_text::Type type, String text_str)
489 text_str_ = text_str;
494 Midi_text::str () const
496 String str = "ff" + String_convert::i2hex_str (type_, 2, '0');
497 str = String_convert::hex2bin_str (str);
498 str += i2varint_str (text_str_.length_i ());
503 Midi_track::Midi_track ()
507 // 00 00 00 3B chunk length (59)
508 // 00 FF 58 04 04 02 18 08 time signature
509 // 00 FF 51 03 07 A1 20 tempo
511 // FF 59 02 sf mi Key Signature
522 char const* data_ch_C = ""
523 // "00" "ff58" "0404" "0218" "08"
524 // "00" "ff51" "0307" "a120"
525 // why a key at all, in midi?
527 // "00" "ff59" "02" "00" "00"
528 // key: F (scsii-menuetto)
529 // "00" "ff59" "02" "ff" "00"
533 // only for format 0 (currently using format 1)?
534 data_str += String_convert::hex2bin_str (data_ch_C);
536 char const* footer_ch_C = "00" "ff2f" "00";
537 String footer_str = String_convert::hex2bin_str (footer_ch_C);
539 set ("MTrk", data_str, footer_str);
543 Midi_track::add (Moment delta_time_mom, Midi_item* mitem_p)
545 assert (delta_time_mom >= Moment (0));
547 event_p_list_.bottom ().add (new Midi_event (delta_time_mom, mitem_p));
551 Midi_track::data_str () const
553 String str = Midi_chunk::data_str ();
554 if (check_debug && !monitor->silent_b ("Midistrings"))
556 for (PCursor<Midi_event*> i (event_p_list_); i.ok (); i++)
559 if (check_debug && !monitor->silent_b ("Midistrings"))
565 Midi_track::~Midi_track ()