plugins/libevtinteger.c

   1 /* gAlan - Graphical Audio Language
   2  * Copyright (C) 1999 Tony Garnock-Jones
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <stdio.h>
  22 #include <stddef.h>
  23
  24 #include <gdk/gdk.h>
  25 #include <gtk/gtk.h>
  26
  27 #include "global.h"
  28 #include "generator.h"
  29 #include "comp.h"
  30 #include "control.h"
  31 #include "gencomp.h"
  32 #include "msgbox.h"
  33
  34 #define GENERATOR_CLASS_NAME    "evtinteger"
  35 #define GENERATOR_CLASS_PATH    "Events/Integer"
  36
  37 #define EVT_VALUE 0
  38 #define EVT_OUTPUT 0
  39
  40 typedef struct Data {
  41 } Data;
  42
  43 PRIVATE int init_instance(Generator *g) {
  44
  45   return 1;
  46 }
  47
  48 PRIVATE void destroy_instance(Generator *g) {
  49
  50 }
  51
  52 PRIVATE void unpickle_instance(Generator *g, ObjectStoreItem *item, ObjectStore *db) {
  53
  54 }
  55
  56 PRIVATE void pickle_instance(Generator *g, ObjectStoreItem *item, ObjectStore *db) {
  57
  58 }
  59
  60
  61 PRIVATE void evt_value_handler(Generator *g, AEvent *event) {
  62
  63   event->d.number = (double) ((int) (event->d.number));
  64   gen_send_events(g, EVT_OUTPUT, -1, event);
  65 }
  66
  67 PRIVATE ControlDescriptor controls[] = {
  68   { CONTROL_KIND_NONE, }
  69 };
  70
  71
  72
  73 PRIVATE void setup_class(void) {
  74   GeneratorClass *k = gen_new_generatorclass(GENERATOR_CLASS_NAME, FALSE, 1, 1,
  75                                              NULL, NULL, controls,
  76                                              init_instance, destroy_instance,
  77                                              unpickle_instance, pickle_instance);
  78
  79   gen_configure_event_input(k, EVT_VALUE, "Note", evt_value_handler);
  80   gen_configure_event_output(k, EVT_OUTPUT, "Freq");
  81
  82   gencomp_register_generatorclass(k, FALSE, GENERATOR_CLASS_PATH, NULL, NULL);
  83 }
  84
  85 PUBLIC void init_plugin(void) {
  86   setup_class();
  87 }