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_tempo* i = dynamic_cast<Audio_tempo*> (a))
31 return new Midi_tempo (i);
32 else if (Audio_time_signature* i = dynamic_cast<Audio_time_signature*> (a))
33 return new Midi_time_signature (i);
34 else if (Audio_text* i = dynamic_cast<Audio_text*> (a))
35 return i->text_str_.length_i () ? new Midi_text (i) : 0;
44 Midi_chunk::set (String header_str, String data_str, String footer_str)
47 footer_str_ = footer_str;
48 header_str_ = header_str;
52 Midi_chunk::data_str () const
58 Midi_chunk::str () const
60 String str = header_str_;
61 String dat = data_str ();
62 String length_str = String_convert::i2hex_str (dat.length_i ()
63 + footer_str_.length_i (), 8, '0');
64 length_str = String_convert::hex2bin_str (length_str);
71 Midi_duration::Midi_duration (Real seconds_f)
73 seconds_f_ = seconds_f;
77 Midi_duration::str () const
79 return String ("<duration: ") + to_str (seconds_f_) + ">";
82 Midi_event::Midi_event (Moment delta_mom, Midi_item* midi_p)
84 delta_mom_ = delta_mom;
89 Midi_event::str () const
91 int delta_i = delta_mom_ * Moment (384 * 4); // ugh.
93 String delta_str = Midi_item::i2varint_str (delta_i);
94 String midi_str = midi_p_->str ();
95 assert (midi_str.length_i ());
96 return delta_str + midi_str;
100 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
104 String format_str = String_convert::i2hex_str (format_i, 4, '0');
105 str += String_convert::hex2bin_str (format_str);
107 String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
108 str += String_convert::hex2bin_str (tracks_str);
110 String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
111 str += String_convert::hex2bin_str (tempo_str);
113 set ("MThd", str, "");
117 /* why doesn't this start at 0 ?
121 char const* const instrument_name_sz_a_[ ] = {
122 /* default is usually piano */
126 /* 1 */ "acoustic grand",
127 /* 2 */ "bright acoustic",
128 /* 3 */ "electric grand",
129 /* 4 */ "honky-tonk",
130 /* 5 */ "electric piano 1",
131 /* 6 */ "electric piano 2",
132 /* 7 */ "harpsichord",
135 /* (9-16 chrom percussion) */
137 /* 10 */ "glockenspiel",
138 /* 11 */ "music box",
139 /* 12 */ "vibraphone",
141 /* 14 */ "xylophone",
142 /* 15 */ "tubular bells",
146 /* 17 */ "drawbar organ",
147 /* 18 */ "percussive organ",
148 /* 19 */ "rock organ",
149 /* 20 */ "church organ",
150 /* 21 */ "reed organ",
151 /* 22 */ "accordion",
152 /* 23 */ "harmonica",
153 /* 24 */ "concertina",
156 /* 25 */ "acoustic guitar (nylon)",
157 /* 26 */ "acoustic guitar (steel)",
158 /* 27 */ "electric guitar (jazz)",
159 /* 28 */ "electric guitar (clean)",
160 /* 29 */ "electric guitar (muted)",
161 /* 30 */ "overdriven guitar",
162 /* 31 */ "distorted guitar",
163 /* 32 */ "guitar harmonics",
166 /* 33 */ "acoustic bass",
167 /* 34 */ "electric bass (finger)",
168 /* 35 */ "electric bass (pick)",
169 /* 36 */ "fretless bass",
170 /* 37 */ "slap bass 1",
171 /* 38 */ "slap bass 2",
172 /* 39 */ "synth bass 1",
173 /* 40 */ "synth bass 2",
175 /* (41-48 strings) */
179 /* 44 */ "contrabass",
180 /* 45 */ "tremolo strings",
181 /* 46 */ "pizzicato strings",
182 /* 47 */ "orchestral strings",
185 /* (49-56 ensemble) */
186 /* 49 */ "string ensemble 1",
187 /* 50 */ "string ensemble 2",
188 /* 51 */ "synthstrings 1",
189 /* 52 */ "synthstrings 2",
190 /* 53 */ "choir aahs",
191 /* 54 */ "voice oohs",
192 /* 55 */ "synth voice",
193 /* 56 */ "orchestra hit",
199 /* 60 */ "muted trumpet",
200 /* 61 */ "french horn",
201 /* 62 */ "brass section",
202 /* 63 */ "synthbrass 1",
203 /* 64 */ "synthbrass 2",
206 /* 65 */ "soprano sax",
208 /* 67 */ "tenor sax",
209 /* 68 */ "baritone sax",
211 /* 70 */ "english horn",
219 /* 76 */ "pan flute",
220 /* 77 */ "blown bottle",
221 /* 78 */ "skakuhachi",
225 /* (81-88 synth lead) */
226 /* 81 */ "lead 1 (square)",
227 /* 82 */ "lead 2 (sawtooth)",
228 /* 83 */ "lead 3 (calliope)",
229 /* 84 */ "lead 4 (chiff)",
230 /* 85 */ "lead 5 (charang)",
231 /* 86 */ "lead 6 (voice)",
232 /* 87 */ "lead 7 (fifths)",
233 /* 88 */ "lead 8 (bass+lead)",
235 /* (89-96 synth pad) */
236 /* 89 */ "pad 1 (new age)",
237 /* 90 */ "pad 2 (warm)",
238 /* 91 */ "pad 3 (polysynth)",
239 /* 92 */ "pad 4 (choir)",
240 /* 93 */ "pad 5 (bowed)",
241 /* 94 */ "pad 6 (metallic)",
242 /* 95 */ "pad 7 (halo)",
243 /* 96 */ "pad 8 (sweep)",
245 /* (97-104 synth effects) */
246 /* 97 */ "fx 1 (rain)",
247 /* 98 */ "fx 2 (soundtrack)",
248 /* 99 */ "fx 3 (crystal)",
249 /* 100 */ "fx 4 (atmosphere)",
250 /* 101 */ "fx 5 (brightness)",
251 /* 102 */ "fx 6 (goblins)",
252 /* 103 */ "fx 7 (echoes)",
253 /* 104 */ "fx 8 (sci-fi)",
255 /* (105-112 ethnic) */
258 /* 107 */ "shamisen",
265 /* (113-120 percussive) */
266 /* 113 */ "tinkle bell",
268 /* 115 */ "steel drums",
269 /* 116 */ "woodblock",
270 /* 117 */ "taiko drum",
271 /* 118 */ "melodic tom",
272 /* 119 */ "synth drum",
273 /* 120 */ "reverse cymbal",
275 /* (121-128 sound effects) */
276 /* 121 */ "guitar fret noise",
277 /* 122 */ "breath noise",
278 /* 123 */ "seashore",
279 /* 124 */ "bird tweet",
280 /* 125 */ "telephone ring",
281 /* 126 */ "helicopter",
282 /* 127 */ "applause",
287 Midi_instrument::Midi_instrument (Audio_instrument* a)
290 audio_l_->str_.to_lower ();
294 Midi_instrument::str () const
296 Byte program_byte = 0;
298 for (int i = 0; !found && instrument_name_sz_a_[i]; i++)
299 if (audio_l_->str_ == String (instrument_name_sz_a_[ i ]))
301 program_byte = (Byte)i;
307 warning (_f ("no such instrument: `%s'", audio_l_->str_.ch_C ()));
310 String str = to_str ((char) (0xc0 + channel_i_));
311 str += to_str ((char)program_byte);
315 Midi_item::Midi_item ()
320 Midi_item::~Midi_item ()
325 Midi_item::i2varint_str (int i)
327 int buffer_i = i & 0x7f;
328 while ( (i >>= 7) > 0)
332 buffer_i += (i & 0x7f);
338 str += to_str ((char)buffer_i);
347 Midi_key::Midi_key (Audio_key*a)
353 Midi_key::str () const
355 int sharps_i = audio_l_->key_.sharps_i ();
356 int flats_i = audio_l_->key_.flats_i ();
358 // midi cannot handle non-conventional keys
359 if (flats_i && sharps_i)
361 String str = _f ("unconventional key: flats: %d, sharps: %d", flats_i,
363 flats_i = sharps_i = 0;
365 int accidentals_i = sharps_i - flats_i;
367 String str = "ff5902";
368 str += String_convert::i2hex_str (accidentals_i, 2, '0');
369 str += String_convert::i2hex_str ((int)audio_l_->key_.minor_b (), 2, '0');
370 return String_convert::hex2bin_str (str);
373 Midi_time_signature::Midi_time_signature (Audio_time_signature* a)
376 clocks_per_1_i_ = 18;
380 Midi_time_signature::str () const
382 int num_i = audio_l_->beats_i_;
383 int den_i = audio_l_->one_beat_i_;
385 String str = "ff5804";
386 str += String_convert::i2hex_str (num_i, 2, '0');
387 str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
388 str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
389 str += String_convert::i2hex_str (8, 2, '0');
390 return String_convert::hex2bin_str (str);
393 Midi_note::Midi_note (Audio_note* a)
396 dynamic_byte_ = 0x7f;
400 Midi_note::length_mom () const
402 Moment m = audio_l_->length_mom_;
404 if (m < Moment (1, 1000))
406 warning (_ ("silly duration"));
414 Midi_note::pitch_i () const
416 int p = audio_l_->pitch_.semitone_pitch () + audio_l_->transposing_i_;
419 warning (_ ("silly pitch"));
426 Midi_note::str () const
428 Byte status_byte = (char) (0x90 + channel_i_);
430 String str = to_str ((char)status_byte);
431 str += to_str ((char) (pitch_i () + c0_pitch_i_c_));
433 str += to_str ((char)dynamic_byte_);
437 Midi_note_off::Midi_note_off (Midi_note* n)
438 : Midi_note (n->audio_l_)
441 channel_i_ = n->channel_i_;
443 // Anybody who hears any difference, or knows how this works?
444 // 0 should definitely be avoided, notes stick on some sound cards.
445 // 64 is supposed to be neutral
446 aftertouch_byte_ = 64;
451 Midi_note_off::str () const
453 Byte status_byte = (char) (0x80 + channel_i_);
455 String str = to_str ((char)status_byte);
456 str += to_str ((char) (pitch_i () + Midi_note::c0_pitch_i_c_));
457 str += to_str ((char)aftertouch_byte_);
461 Midi_tempo::Midi_tempo (Audio_tempo* a)
467 Midi_tempo::str () const
469 int useconds_per_4_i = 60 * (int)1e6 / audio_l_->per_minute_4_i_;
470 String str = "ff5103";
471 str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
472 return String_convert::hex2bin_str (str);
475 Midi_text::Midi_text (Audio_text* a)
481 Midi_text::Midi_text (Midi_text::Type type, String text_str)
484 text_str_ = text_str;
490 Midi_text::str () const
492 String str = "ff" + String_convert::i2hex_str (audio_l_->type_, 2, '0');
493 str = String_convert::hex2bin_str (str);
494 str += i2varint_str (audio_l_->text_str_.length_i ());
495 str += audio_l_->text_str_;
499 Midi_track::Midi_track ()
503 // 00 00 00 3B chunk length (59)
504 // 00 FF 58 04 04 02 18 08 time signature
505 // 00 FF 51 03 07 A1 20 tempo
507 // FF 59 02 sf mi Key Signature
518 char const* data_ch_C = ""
519 // "00" "ff58" "0404" "0218" "08"
520 // "00" "ff51" "0307" "a120"
521 // why a key at all, in midi?
523 // "00" "ff59" "02" "00" "00"
524 // key: F (scsii-menuetto)
525 // "00" "ff59" "02" "ff" "00"
529 // only for format 0 (currently using format 1)?
530 data_str += String_convert::hex2bin_str (data_ch_C);
532 char const* footer_ch_C = "00" "ff2f" "00";
533 String footer_str = String_convert::hex2bin_str (footer_ch_C);
535 set ("MTrk", data_str, footer_str);
539 Midi_track::add (Moment delta_time_mom, Midi_item* midi_p)
541 assert (delta_time_mom >= Moment (0));
543 Midi_event * e = new Midi_event (delta_time_mom, midi_p);
544 event_p_list_.append (new Killing_cons<Midi_event> (e, 0));
548 Midi_track::data_str () const
550 String str = Midi_chunk::data_str ();
551 if (flower_dstream && !flower_dstream->silent_b ("Midistrings"))
553 for (Cons<Midi_event> *i=event_p_list_.head_; i; i = i->next_)
555 str += i->car_->str ();
556 if (flower_dstream && !flower_dstream->silent_b ("Midistrings"))