lily/midi-item.cc

   1 /*
   2   midi-item.cc -- implement Midi items.
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c)  1997--1999 Jan Nieuwenhuizen <janneke@gnu.org>
   7  */
   8
   9 #include "proto.hh"
  10 #include "debug.hh"
  11 #include "misc.hh"
  12 #include "string.hh"
  13 #include "string-convert.hh"
  14 #include "midi-item.hh"
  15 #include "midi-stream.hh"
  16 #include "audio-item.hh"
  17 #include "duration.hh"
  18
  19 #include "killing-cons.tcc"
  20
  21 Midi_item*
  22 Midi_item::midi_p (Audio_item* a)
  23 {
  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;
  36   else
  37     assert (0);
  38
  39   // isn't C++ grand?
  40   return 0;
  41 }
  42
  43 void
  44 Midi_chunk::set (String header_str, String data_str, String footer_str)
  45 {
  46   data_str_ = data_str;
  47   footer_str_ = footer_str;
  48   header_str_ = header_str;
  49 }
  50
  51 String
  52 Midi_chunk::data_str () const
  53 {
  54   return data_str_;
  55 }
  56
  57 String
  58 Midi_chunk::str () const
  59 {
  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);
  65   str += length_str;
  66   str += dat;
  67   str += footer_str_;
  68   return str;
  69 }
  70
  71 Midi_duration::Midi_duration (Real seconds_f)
  72 {
  73   seconds_f_ = seconds_f;
  74 }
  75
  76 String
  77 Midi_duration::str () const
  78 {
  79   return String ("<duration: ") + to_str (seconds_f_) + ">";
  80 }
  81
  82 Midi_event::Midi_event (Moment delta_mom, Midi_item* midi_p)
  83 {
  84   delta_mom_ = delta_mom;
  85   midi_p_ = midi_p;
  86 }
  87
  88 String
  89 Midi_event::str () const
  90 {
  91   int delta_i = delta_mom_ * Moment (Duration::division_1_i_s);
  92   String delta_str = Midi_item::i2varint_str (delta_i);
  93   String midi_str = midi_p_->str ();
  94   assert (midi_str.length_i ());
  95   return delta_str + midi_str;
  96 }
  97
  98
  99 Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
 100 {
 101   String str;
 102
 103   String format_str = String_convert::i2hex_str (format_i, 4, '0');
 104   str += String_convert::hex2bin_str (format_str);
 105
 106   String tracks_str = String_convert::i2hex_str (tracks_i, 4, '0');
 107   str += String_convert::hex2bin_str (tracks_str);
 108
 109   String tempo_str = String_convert::i2hex_str (clocks_per_4_i, 4, '0');
 110   str += String_convert::hex2bin_str (tempo_str);
 111
 112   set ("MThd", str, "");
 113 }
 114
 115 /* why doesn't this start at 0 ?
 116  */
 117 char const* const instrument_name_sz_a_[ ] = {
 118   /* default is usually piano */
 119   /* 0 "piano", */
 120
 121   /* (1-8 piano) */
 122   /* 1 */ "acoustic grand",
 123           /* 2 */ "bright acoustic",
 124           /* 3 */ "electric grand",
 125           /* 4 */ "honky-tonk",
 126           /* 5 */ "electric piano 1",
 127           /* 6 */ "electric piano 2",
 128           /* 7 */ "harpsichord",
 129           /* 8 */ "clav",
 130
 131           /* (9-16 chrom percussion) */
 132           /* 9 */ "celesta",
 133           /* 10 */ "glockenspiel",
 134           /* 11 */ "music box",
 135           /* 12 */ "vibraphone",
 136           /* 13 */ "marimba",
 137           /* 14 */ "xylophone",
 138           /* 15 */ "tubular bells",
 139           /* 16 */ "dulcimer",
 140
 141           /* (17-24 organ) */
 142           /* 17 */ "drawbar organ",
 143           /* 18 */ "percussive organ",
 144           /* 19 */ "rock organ",
 145           /* 20 */ "church organ",
 146           /* 21 */ "reed organ",
 147           /* 22 */ "accordion",
 148           /* 23 */ "harmonica",
 149           /* 24 */ "concertina",
 150
 151           /* (25-32 guitar) */
 152           /* 25 */ "acoustic guitar (nylon)",
 153           /* 26 */ "acoustic guitar (steel)",
 154           /* 27 */ "electric guitar (jazz)",
 155           /* 28 */ "electric guitar (clean)",
 156           /* 29 */ "electric guitar (muted)",
 157           /* 30 */ "overdriven guitar",
 158           /* 31 */ "distorted guitar",
 159           /* 32 */ "guitar harmonics",
 160
 161           /* (33-40 bass) */
 162           /* 33 */ "acoustic bass",
 163           /* 34 */ "electric bass (finger)",
 164           /* 35 */ "electric bass (pick)",
 165           /* 36 */ "fretless bass",
 166           /* 37 */ "slap bass 1",
 167           /* 38 */ "slap bass 2",
 168           /* 39 */ "synth bass 1",
 169           /* 40 */ "synth bass 2",
 170
 171           /* (41-48 strings) */
 172           /* 41 */ "violin",
 173           /* 42 */ "viola",
 174           /* 43 */ "cello",
 175           /* 44 */ "contrabass",
 176           /* 45 */ "tremolo strings",
 177           /* 46 */ "pizzicato strings",
 178           /* 47 */ "orchestral strings",
 179           /* 48 */ "timpani",
 180
 181           /* (49-56 ensemble) */
 182           /* 49 */ "string ensemble 1",
 183           /* 50 */ "string ensemble 2",
 184           /* 51 */ "synthstrings 1",
 185           /* 52 */ "synthstrings 2",
 186           /* 53 */ "choir aahs",
 187           /* 54 */ "voice oohs",
 188           /* 55 */ "synth voice",
 189           /* 56 */ "orchestra hit",
 190
 191           /* (57-64 brass) */
 192           /* 57 */ "trumpet",
 193           /* 58 */ "trombone",
 194           /* 59 */ "tuba",
 195           /* 60 */ "muted trumpet",
 196           /* 61 */ "french horn",
 197           /* 62 */ "brass section",
 198           /* 63 */ "synthbrass 1",
 199           /* 64 */ "synthbrass 2",
 200
 201           /* (65-72 reed) */
 202           /* 65 */ "soprano sax",
 203           /* 66 */ "alto sax",
 204           /* 67 */ "tenor sax",
 205           /* 68 */ "baritone sax",
 206           /* 69 */ "oboe",
 207           /* 70 */ "english horn",
 208           /* 71 */ "bassoon",
 209           /* 72 */ "clarinet",
 210
 211           /* (73-80 pipe) */
 212           /* 73 */ "piccolo",
 213           /* 74 */ "flute",
 214           /* 75 */ "recorder",
 215           /* 76 */ "pan flute",
 216           /* 77 */ "blown bottle",
 217           /* 78 */ "skakuhachi",
 218           /* 79 */ "whistle",
 219           /* 80 */ "ocarina",
 220
 221           /* (81-88 synth lead) */
 222           /* 81 */ "lead 1 (square)",
 223           /* 82 */ "lead 2 (sawtooth)",
 224           /* 83 */ "lead 3 (calliope)",
 225           /* 84 */ "lead 4 (chiff)",
 226           /* 85 */ "lead 5 (charang)",
 227           /* 86 */ "lead 6 (voice)",
 228           /* 87 */ "lead 7 (fifths)",
 229           /* 88 */ "lead 8 (bass+lead)",
 230
 231           /* (89-96 synth pad) */
 232           /* 89 */ "pad 1 (new age)",
 233           /* 90 */ "pad 2 (warm)",
 234           /* 91 */ "pad 3 (polysynth)",
 235           /* 92 */ "pad 4 (choir)",
 236           /* 93 */ "pad 5 (bowed)",
 237           /* 94 */ "pad 6 (metallic)",
 238           /* 95 */ "pad 7 (halo)",
 239           /* 96 */ "pad 8 (sweep)",
 240
 241           /* (97-104 synth effects) */
 242           /* 97 */ "fx 1 (rain)",
 243           /* 98 */ "fx 2 (soundtrack)",
 244           /* 99 */ "fx 3 (crystal)",
 245           /* 100 */ "fx 4 (atmosphere)",
 246           /* 101 */ "fx 5 (brightness)",
 247           /* 102 */ "fx 6 (goblins)",
 248           /* 103 */ "fx 7 (echoes)",
 249           /* 104 */ "fx 8 (sci-fi)",
 250
 251           /* (105-112 ethnic) */
 252           /* 105 */ "sitar",
 253           /* 106 */ "banjo",
 254           /* 107 */ "shamisen",
 255           /* 108 */ "koto",
 256           /* 109 */ "kalimba",
 257           /* 110 */ "bagpipe",
 258           /* 111 */ "fiddle",
 259           /* 112 */ "shanai",
 260
 261           /* (113-120 percussive) */
 262           /* 113 */ "tinkle bell",
 263           /* 114 */ "agogo",
 264           /* 115 */ "steel drums",
 265           /* 116 */ "woodblock",
 266           /* 117 */ "taiko drum",
 267           /* 118 */ "melodic tom",
 268           /* 119 */ "synth drum",
 269           /* 120 */ "reverse cymbal",
 270
 271           /* (121-128 sound effects) */
 272           /* 121 */ "guitar fret noise",
 273           /* 122 */ "breath noise",
 274           /* 123 */ "seashore",
 275           /* 124 */ "bird tweet",
 276           /* 125 */ "telephone ring",
 277           /* 126 */ "helicopter",
 278           /* 127 */ "applause",
 279           /* 128 */ "gunshot",
 280           0
 281 };
 282
 283 Midi_instrument::Midi_instrument (Audio_instrument* a)
 284 {
 285   audio_l_ = a;
 286   audio_l_->str_.to_lower ();
 287 }
 288
 289 String
 290 Midi_instrument::str () const
 291 {
 292   Byte program_byte = 0;
 293   bool found = false;
 294   for (int i = 0; !found && instrument_name_sz_a_[i]; i++)
 295     if (audio_l_->str_ == String (instrument_name_sz_a_[ i ]))
 296       {
 297         program_byte = (Byte)i;
 298         found = true;
 299       }
 300
 301   if (!found)
 302     {
 303       warning (_f("No such instrument: `%s'", audio_l_->str_.ch_C ()));
 304     }
 305
 306   String str = to_str ((char) (0xc0 + channel_i_));
 307   str += to_str ((char)program_byte);
 308   return str;
 309 }
 310
 311 Midi_item::Midi_item ()
 312 {
 313   channel_i_ = 0;
 314 }
 315
 316 Midi_item::~Midi_item ()
 317 {
 318 }
 319
 320 String
 321 Midi_item::i2varint_str (int i)
 322 {
 323   int buffer_i = i & 0x7f;
 324   while ( (i >>= 7) > 0)
 325     {
 326       buffer_i <<= 8;
 327       buffer_i |= 0x80;
 328       buffer_i += (i & 0x7f);
 329     }
 330
 331   String str;
 332   while (1)
 333     {
 334       str += to_str ((char)buffer_i);
 335       if (buffer_i & 0x80)
 336         buffer_i >>= 8;
 337       else
 338         break;
 339     }
 340   return str;
 341 }
 342
 343 Midi_key::Midi_key (Audio_key*a)
 344 {
 345   audio_l_ = a;
 346 }
 347
 348 String
 349 Midi_key::str () const
 350 {
 351   int sharps_i = audio_l_->key_.sharps_i ();
 352   int flats_i = audio_l_->key_.flats_i ();
 353
 354   // midi cannot handle non-conventional keys
 355   if (flats_i && sharps_i)
 356     {
 357       String str = _f ("unconventional key: flats: %d, sharps: %d", flats_i,
 358         sharps_i);
 359       flats_i = sharps_i = 0;
 360     }
 361   int accidentals_i = sharps_i - flats_i;
 362
 363   String str = "ff5902";
 364   str += String_convert::i2hex_str (accidentals_i, 2, '0');
 365   str += String_convert::i2hex_str ((int)audio_l_->key_.minor_b (), 2, '0');
 366   return String_convert::hex2bin_str (str);
 367 }
 368
 369 Midi_time_signature::Midi_time_signature (Audio_time_signature* a)
 370 {
 371   audio_l_ = a;
 372   clocks_per_1_i_ = 18;
 373 }
 374
 375 String
 376 Midi_time_signature::str () const
 377 {
 378   int num_i = audio_l_->beats_i_;
 379   int den_i = audio_l_->one_beat_i_;
 380
 381   String str = "ff5804";
 382   str += String_convert::i2hex_str (num_i, 2, '0');
 383   str += String_convert::i2hex_str (intlog2 (den_i) , 2, '0');
 384   str += String_convert::i2hex_str (clocks_per_1_i_, 2, '0');
 385   str += String_convert::i2hex_str (8, 2, '0');
 386   return String_convert::hex2bin_str (str);
 387 }
 388
 389 Midi_note::Midi_note (Audio_note* a)
 390 {
 391   audio_l_ = a;
 392   dynamic_byte_ = 0x7f;
 393 }
 394
 395 Moment
 396 Midi_note::length_mom () const
 397 {
 398   Moment m = audio_l_->length_mom_;
 399 #if 0
 400   if (m < Moment (1, 1000))
 401     {
 402       warning (_ ("silly duration"));
 403       m = 1;
 404      }
 405 #endif
 406   return m;
 407 }
 408
 409 int
 410 Midi_note::pitch_i () const
 411 {
 412   int p = audio_l_->pitch_.semitone_pitch () + audio_l_->transposing_i_;
 413   if (p == INT_MAX)
 414     {
 415       warning (_ ("silly pitch"));
 416       p = 0;
 417      }
 418   return p;
 419 }
 420
 421 String
 422 Midi_note::str () const
 423 {
 424   Byte status_byte = (char) (0x90 + channel_i_);
 425
 426   String str = to_str ((char)status_byte);
 427   str += to_str ((char) (pitch_i () + c0_pitch_i_c_));
 428
 429   str += to_str ((char)dynamic_byte_);
 430   return str;
 431 }
 432
 433 Midi_note_off::Midi_note_off (Midi_note* n)
 434   : Midi_note (n->audio_l_)
 435 {
 436   on_l_ = n;
 437   channel_i_ = n->channel_i_;
 438
 439   // Anybody who hears any difference, or knows how this works?
 440
 441   // 0x64 is supposed to be neutral, but let's try
 442   //aftertouch_byte_ = 0x64;
 443
 444   static int i = 0;
 445   aftertouch_byte_ = i;
 446   i += 0x10;
 447 }
 448
 449 String
 450 Midi_note_off::str () const
 451 {
 452   Byte status_byte = (char) (0x80 + channel_i_);
 453
 454   String str = to_str ((char)status_byte);
 455   str += to_str ((char) (pitch_i () + Midi_note::c0_pitch_i_c_));
 456   str += to_str ((char)aftertouch_byte_);
 457   return str;
 458 }
 459
 460 Midi_tempo::Midi_tempo (Audio_tempo* a)
 461 {
 462   audio_l_ = a;
 463 }
 464
 465 String
 466 Midi_tempo::str () const
 467 {
 468   int useconds_per_4_i = 60 * (int)1e6 / audio_l_->per_minute_4_i_;
 469   String str = "ff5103";
 470   str += String_convert::i2hex_str (useconds_per_4_i, 6, '0');
 471   return String_convert::hex2bin_str (str);
 472 }
 473
 474 Midi_text::Midi_text (Audio_text* a)
 475 {
 476   audio_l_ = a;
 477 }
 478
 479 #if 0
 480 Midi_text::Midi_text (Midi_text::Type type, String text_str)
 481   : Audio_text ()
 482 {
 483   text_str_ = text_str;
 484   type_ = type;
 485 }
 486 #endif
 487
 488 String
 489 Midi_text::str () const
 490 {
 491   String str = "ff" + String_convert::i2hex_str (audio_l_->type_, 2, '0');
 492   str = String_convert::hex2bin_str (str);
 493   str += i2varint_str (audio_l_->text_str_.length_i ());
 494   str += audio_l_->text_str_;
 495   return str;
 496 }
 497
 498 Midi_track::Midi_track ()
 499   : Midi_chunk ()
 500 {
 501   //                4D 54 72 6B     MTrk
 502   //                00 00 00 3B     chunk length (59)
 503   //        00      FF 58 04 04 02 18 08    time signature
 504   //        00      FF 51 03 07 A1 20       tempo
 505
 506 // FF 59 02 sf mi  Key Signature
 507 //         sf = -7:  7 flats
 508 //         sf = -1:  1 flat
 509 //         sf = 0:  key of C
 510 //         sf = 1:  1 sharp
 511 //         sf = 7: 7 sharps
 512 //         mi = 0:  major key
 513 //         mi = 1:  minor key
 514
 515   number_i_ = 0;
 516
 517   char const* data_ch_C = ""
 518     //        "00" "ff58" "0404" "0218" "08"
 519     //  "00" "ff51" "0307" "a120"
 520     // why a key at all, in midi?
 521     // key: C
 522     //  "00" "ff59" "02" "00" "00"
 523     // key: F (scsii-menuetto)
 524     //                            "00" "ff59" "02" "ff" "00"
 525         ;
 526
 527   String data_str;
 528   // only for format 0 (currently using format 1)?
 529   data_str += String_convert::hex2bin_str (data_ch_C);
 530
 531   char const* footer_ch_C = "00" "ff2f" "00";
 532   String footer_str = String_convert::hex2bin_str (footer_ch_C);
 533
 534   set ("MTrk", data_str, footer_str);
 535 }
 536
 537 void
 538 Midi_track::add (Moment delta_time_mom, Midi_item* midi_p)
 539 {
 540   assert (delta_time_mom >= Moment (0));
 541
 542   Midi_event * e = new Midi_event (delta_time_mom, midi_p);
 543   event_p_list_.append (new Killing_cons<Midi_event> (e, 0));
 544 }
 545
 546 String
 547 Midi_track::data_str () const
 548 {
 549   String str = Midi_chunk::data_str ();
 550   if (check_debug && !monitor->silent_b ("Midistrings"))
 551     str += "\n";
 552   for (Cons<Midi_event> *i=event_p_list_.head_; i; i = i->next_)
 553     {
 554       str += i->car_->str ();
 555       if (check_debug && !monitor->silent_b ("Midistrings"))
 556         str += "\n";
 557     }
 558   return str;
 559 }