sound.c

   1
   2 /**
   3  *
   4  * Tennix! SDL Port
   5  * Copyright (C) 2003, 2007, 2008 Thomas Perl <thp@perli.net>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  20  * MA  02110-1301, USA.
  21  *
  22  **/
  23
  24 #include "tennix.h"
  25 #include "sound.h"
  26
  27 static Sound* sounds;
  28
  29 #include "data/sounds_data.c"
  30 static const ResourceData samples[] = {
  31     RESOURCE(racket1),
  32     RESOURCE(racket2),
  33     RESOURCE(ground1),
  34     RESOURCE(ground2),
  35     RESOURCE(audience),
  36     RESOURCE(applause),
  37     RESOURCE(out),
  38     RESOURCE(background)
  39 };
  40
  41 void init_sound() {
  42     int i;
  43     Mix_Chunk* data;
  44
  45     if( Mix_OpenAudio( 44100, AUDIO_S16SYS, 2, 1024) < 0) {
  46         fprintf( stderr, "Error initializing SDL_mixer: %s\n", Mix_GetError());
  47     }
  48
  49     sounds = (Sound*)calloc(SOUND_MAX, sizeof(Sound));
  50
  51     for( i=0; i<SOUND_MAX; i++) {
  52         data = Mix_LoadWAV_RW(SDL_RWFromConstMem(samples[i].data, samples[i].size), 1);
  53         if( !data) {
  54             fprintf( stderr, "Error: %s\n", SDL_GetError());
  55             continue;
  56         }
  57
  58         sounds[i].data = data;
  59     }
  60
  61 }
  62
  63 void play_sample_n(sound_id id, int n)
  64 {
  65     if (id >= SOUND_MAX) {
  66         fprintf(stderr, "Cannot play sound #%d.\n", id);
  67         return;
  68     }
  69
  70     if (n == -2) {
  71         Mix_FadeInChannel(id, sounds[id].data, -1, FADE_IN_MS);
  72     } else {
  73         Mix_PlayChannel(id, sounds[id].data, n);
  74     }
  75
  76     if (id == SOUND_RACKET) {
  77         stop_sample(SOUND_APPLAUSE);
  78     }
  79 }
  80
  81 void stop_sample(sound_id id)
  82 {
  83     Mix_FadeOutChannel(id, FADE_OUT_MS);
  84 }
  85
  86 void pan_sample(sound_id id, float position)
  87 {
  88     if (position == 0.5) {
  89         Mix_SetPanning(id, 255, 255);
  90     }
  91     else {
  92         Mix_SetPanning(id, 255*(1.0-position), 255*(position));
  93     }
  94 }
  95