ss_eff.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 struct ss_eff
  26 {
  27         float * wave;           /* wave buffer */
  28         double size;            /* size of wave */
  29         float gain;             /* effect gain */
  30         float igain;            /* gain increment */
  31
  32         double lfo;             /* lfo value */
  33         double lfo_depth;       /* lfo depth */
  34         double lfo_inc;         /* lfo increment */
  35
  36         double cursor;          /* current buffer position */
  37
  38         float (* func)(struct ss_eff *, float); /* processing function */
  39
  40         struct ss_eff * next;   /* next in chain */
  41 };
  42
  43 void ss_eff_delay(struct ss_eff ** ec, double size);
  44 void ss_eff_echo(struct ss_eff ** ec, double size, float gain);
  45 void ss_eff_comb(struct ss_eff ** ec, double size, float gain);
  46 void ss_eff_allpass(struct ss_eff ** ec, double size, float gain);
  47 void ss_eff_flanger(struct ss_eff ** ec, double size, float gain,
  48         double depth, double freq, double phase);
  49 void ss_eff_wobble(struct ss_eff ** ec, double freq, double phase);
  50 void ss_eff_square_wobble(struct ss_eff ** ec, double freq, double phase);
  51 void ss_eff_fader(struct ss_eff ** ec, double size, float initial, float final);
  52 void ss_eff_reverb(struct ss_eff ** ec);
  53
  54 float ss_eff_process(struct ss_eff * e, float s);
  55 void ss_eff_off(struct ss_eff ** ec);
  56