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>
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"))