ss_ins.h

   1 /*
   2
   3     Ann Hell Ex Machina - Music Software
   4     Copyright (C) 2003 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 struct ss_ins_layer
  25 {
  26         double base_freq;       /* base frequency */
  27         double min_freq;        /* minimum frequency */
  28         double max_freq;        /* maximum frequency */
  29
  30         int n_channels;         /* # of channels */
  31         float * wave[CHANNELS]; /* the PCM waves */
  32
  33         double size;            /* size in samples */
  34         double loop_start;      /* start of loop (-1, no loop) */
  35         double loop_end;        /* end of loop */
  36 };
  37
  38
  39 struct ss_ins
  40 {
  41         int trk_id;                     /* track ID */
  42         struct ss_ins_layer * layers;   /* layers */
  43         int n_layers;                   /* # of layers */
  44
  45         float vol[CHANNELS];            /* channel map */
  46         int sustain;                    /* sustain */
  47 };
  48
  49
  50 void ss_ins_init(struct ss_ins * i, int trk_id);
  51
  52 int ss_ins_add_layer(struct ss_ins * i,
  53         double base_freq, double min_freq, double max_freq,
  54         int n_channels, float * wave[],
  55         double size, double loop_start, double loop_end);
  56
  57 void ss_ins_set_channel_map(struct ss_ins * i,
  58         int n_channels, float vol[]);
  59
  60 void ss_ins_set_sustain(struct ss_ins * i, int sustain);
  61
  62 int ss_ins_note_on(struct ss_ins * i, int note, float vol, int note_id);
  63
  64 void ss_ins_note_off(int note_id);
  65
  66 void ss_ins_frame(int trk_id, float frame[]);