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_CHANNEL_MAP,
  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_NOTE,
  48         SONG_EV_SS_NOTE_ON_BY_TIME,
  49
  50         SONG_EV_NOTE_ON,
  51         SONG_EV_NOTE_OFF,
  52
  53         SONG_EV_END
  54
  55 } song_ev_type;
  56
  57 struct song_ev_generic
  58 {
  59         song_ev_type type;      /* event type */
  60         double time;            /* event time (1: whole note) */
  61         int trk_id;             /* track id */
  62 };
  63
  64 struct song_ev_note
  65 {
  66         song_ev_type type;      /* SONG_EV_NOTE */
  67         double time;
  68         int trk_id;
  69         int note;               /* MIDI-like note */
  70         double len;             /* note length (1: whole note) */
  71         double vol;             /* note volume (1: full volume) */
  72 };
  73
  74 struct song_ev_tempo
  75 {
  76         song_ev_type type;      /* SONG_EV_TEMPO */
  77         double time;
  78         int trk_id;             /* always -1 */
  79         double tempo;           /* tempo in bpm */
  80 };
  81
  82 struct song_ev_meter
  83 {
  84         song_ev_type type;      /* SONG_EV_METER */
  85         double time;
  86         int trk_id;             /* always -1 */
  87         int num;                /* meter numerator */
  88         int den;                /* meter denominator */
  89 };
  90
  91 struct song_ev_ss_note_by_time
  92 {
  93         song_ev_type type;      /* SONG_EV_SS_NOTE_BY_TIME */
  94         double time;
  95         int trk_id;
  96         int note;               /* MIDI-like note (to find the wave) */
  97         double len;             /* note length (1: whole note) */
  98         double vol;             /* note volume (1: full volume) */
  99 };
 100
 101 struct song_ev_ss_sustain
 102 {
 103         song_ev_type type;      /* SONG_EV_SS_SUSTAIN */
 104         double time;
 105         int trk_id;
 106         int sustain;            /* sustain time (in msecs) */
 107 };
 108
 109 struct song_ev_ss_channel_map
 110 {
 111         song_ev_type type;      /* SONG_EV_SS_CHANNEL_MAP */
 112         double time;
 113         int trk_id;
 114         float vol[CHANNELS];    /* volume for each channel */
 115 };
 116
 117 struct song_ev_ss_wav
 118 {
 119         song_ev_type type;      /* SONG_EV_SS_WAV */
 120         double time;
 121         int trk_id;
 122         char * file;            /* path to .wav file */
 123         int base;               /* MIDI-like base note */
 124         int min;                /* MIDI-like minimum note */
 125         int max;                /* MIDI-like maximum note */
 126 };
 127
 128 struct song_ev_ss_pat
 129 {
 130         song_ev_type type;      /* SONG_EV_SS_PAT */
 131         double time;
 132         int trk_id;
 133         char * file;            /* path to .pat file */
 134 };
 135
 136 struct song_ev_ss_eff
 137 {
 138         song_ev_type type;      /* effect type */
 139         double time;
 140         int trk_id;
 141         int channel;            /* channel */
 142         double size;            /* size of effect */
 143         float gain;             /* gain */
 144         double depth;           /* depth */
 145         double freq;            /* freq */
 146         double phase;           /* phase */
 147         float initial;          /* initial vol */
 148         float final;            /* final vol */
 149 };
 150
 151
 152 union song_ev
 153 {
 154         struct song_ev_generic generic;
 155
 156         struct song_ev_tempo tempo;
 157         struct song_ev_meter meter;
 158
 159         struct song_ev_note note;
 160
 161         struct song_ev_ss_note_by_time ss_note_by_time;
 162         struct song_ev_ss_sustain ss_sustain;
 163         struct song_ev_ss_channel_map ss_channel_map;
 164
 165         struct song_ev_ss_wav ss_wav;
 166         struct song_ev_ss_pat ss_pat;
 167
 168         struct song_ev_ss_eff ss_eff;
 169 };
 170
 171 extern union song_ev * _song;
 172 extern int _n_song_ev;
 173
 174 void song_clear(void);
 175 void add_song_ev(union song_ev * ev);
 176 void song_sort(void);