song.h

   1 /*
   2
   3     Ann Hell Ex Machina - Music Software
   4     Copyright (C) 2003/2005 Angel Ortega <angel@triptico.com>
   5
   6     This program is free software; you can redistribute it and/or
   7     modify it under the terms of the GNU General Public License
   8     as published by the Free Software Foundation; either version 2
   9     of the License, or (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20     http://www.triptico.com
  21
  22 */
  23
  24
  25 typedef enum
  26 {
  27         SONG_EV_TEMPO,
  28         SONG_EV_METER,
  29         SONG_EV_MEASURE,
  30
  31         SONG_EV_SS_SUSTAIN,
  32         SONG_EV_SS_SET_CHANNEL,
  33
  34         SONG_EV_SS_WAV,
  35         SONG_EV_SS_PAT,
  36
  37         SONG_EV_SS_EFF_DELAY,
  38         SONG_EV_SS_EFF_ECHO,
  39         SONG_EV_SS_EFF_COMB,
  40         SONG_EV_SS_EFF_ALLPASS,
  41         SONG_EV_SS_EFF_FLANGER,
  42         SONG_EV_SS_EFF_WOBBLE,
  43         SONG_EV_SS_EFF_SQWOBBLE,
  44         SONG_EV_SS_EFF_FADER,
  45         SONG_EV_SS_EFF_REVERB,
  46
  47         SONG_EV_MIDI_CHANNEL,
  48         SONG_EV_MIDI_PROGRAM,
  49
  50         SONG_EV_NOTE,
  51         SONG_EV_SS_NOTE_ON_BY_TIME,
  52
  53         SONG_EV_NOTE_ON,
  54         SONG_EV_NOTE_OFF,
  55
  56         SONG_EV_END
  57
  58 } song_ev_type;
  59
  60 struct song_ev_generic
  61 {
  62         song_ev_type type;      /* event type */
  63         double time;            /* event time (1: whole note) */
  64         int trk_id;             /* track id */
  65 };
  66
  67 struct song_ev_note
  68 {
  69         song_ev_type type;      /* SONG_EV_NOTE */
  70         double time;
  71         int trk_id;
  72         int note;               /* MIDI-like note */
  73         double len;             /* note length (1: whole note) */
  74         float vol;              /* note volume (1: full volume) */
  75 };
  76
  77 struct song_ev_tempo
  78 {
  79         song_ev_type type;      /* SONG_EV_TEMPO */
  80         double time;
  81         int trk_id;             /* always -1 */
  82         double tempo;           /* tempo in bpm */
  83 };
  84
  85 struct song_ev_meter
  86 {
  87         song_ev_type type;      /* SONG_EV_METER */
  88         double time;
  89         int trk_id;             /* always -1 */
  90         int num;                /* meter numerator */
  91         int den;                /* meter denominator */
  92 };
  93
  94 struct song_ev_ss_note_by_time
  95 {
  96         song_ev_type type;      /* SONG_EV_SS_NOTE_BY_TIME */
  97         double time;
  98         int trk_id;
  99         int note;               /* MIDI-like note (to find the wave) */
 100         double len;             /* note length (1: whole note) */
 101         float vol;              /* note volume (1: full volume) */
 102 };
 103
 104 struct song_ev_ss_sustain
 105 {
 106         song_ev_type type;      /* SONG_EV_SS_SUSTAIN */
 107         double time;
 108         int trk_id;
 109         double sustain;         /* sustain time (in msecs) */
 110 };
 111
 112 struct song_ev_ss_set_channel
 113 {
 114         song_ev_type type;      /* SONG_EV_SS_SET_CHANNEL */
 115         double time;
 116         int trk_id;
 117         int channel;            /* channel */
 118         float vol;              /* volume */
 119 };
 120
 121 struct song_ev_ss_wav
 122 {
 123         song_ev_type type;      /* SONG_EV_SS_WAV */
 124         double time;
 125         int trk_id;
 126         char * file;            /* path to .wav file */
 127         int base;               /* MIDI-like base note */
 128         int min;                /* MIDI-like minimum note */
 129         int max;                /* MIDI-like maximum note */
 130         double loop_start;      /* start of loop */
 131         double loop_end;        /* end of loop */
 132 };
 133
 134 struct song_ev_ss_pat
 135 {
 136         song_ev_type type;      /* SONG_EV_SS_PAT */
 137         double time;
 138         int trk_id;
 139         char * file;            /* path to .pat file */
 140 };
 141
 142 struct song_ev_ss_eff
 143 {
 144         song_ev_type type;      /* effect type */
 145         double time;
 146         int trk_id;
 147         int channel;            /* channel */
 148         double size;            /* size of effect */
 149         float gain;             /* gain */
 150         double depth;           /* depth */
 151         double freq;            /* freq */
 152         double phase;           /* phase */
 153         float initial;          /* initial vol */
 154         float final;            /* final vol */
 155 };
 156
 157 struct song_ev_midi_channel
 158 {
 159         song_ev_type type;      /* SONG_EV_MIDI_CHANNEL */
 160         double time;
 161         int trk_id;
 162         int channel;            /* midi channel (1-16) */
 163 };
 164
 165 struct song_ev_midi_program
 166 {
 167         song_ev_type type;      /* SONG_EV_MIDI_PROGRAM */
 168         double time;
 169         int trk_id;
 170         int program;            /* midi program (0-127) */
 171 };
 172
 173 union song_ev
 174 {
 175         struct song_ev_generic generic;
 176
 177         struct song_ev_tempo tempo;
 178         struct song_ev_meter meter;
 179
 180         struct song_ev_note note;
 181
 182         struct song_ev_ss_note_by_time ss_note_by_time;
 183         struct song_ev_ss_sustain ss_sustain;
 184         struct song_ev_ss_set_channel ss_set_channel;
 185
 186         struct song_ev_ss_wav ss_wav;
 187         struct song_ev_ss_pat ss_pat;
 188
 189         struct song_ev_ss_eff ss_eff;
 190
 191         struct song_ev_midi_channel midi_channel;
 192         struct song_ev_midi_program midi_program;
 193 };
 194
 195 extern union song_ev * song;
 196 extern int n_song_ev;
 197
 198 void song_clear(void);
 199 void add_song_ev(union song_ev * ev);
 200 void song_sort(void);