sound.c

   1 #include <SDL/SDL.h>
   2 #include <SDL/SDL_mixer.h>
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <unistd.h>
   6
   7 #include "args.h"
   8 #include "common.h"
   9 #include "config.h"
  10 #include "sound.h"
  11
  12 #define TUNE_TITLE_PAGE         0
  13 #define TUNE_GAMEPLAY           1
  14 #define TUNE_HIGH_SCORE_ENTRY   2
  15 #define NUM_TUNES               3
  16
  17 #define SOUND_BANG              0
  18 #define NUM_SOUNDS              4
  19
  20 static Mix_Music *music[NUM_TUNES];
  21 static int music_volume[NUM_TUNES] = {128,128,128};
  22 static Mix_Chunk *wav[NUM_SOUNDS];
  23
  24 int audio_rate;
  25 Uint16 audio_format;
  26 int audio_channels;
  27
  28 char *add_path(char *);
  29 char *wav_file[] = {
  30         "sounds/booom.wav",
  31         "sounds/cboom.wav",
  32         "sounds/boom.wav",
  33         "sounds/bzboom.wav"
  34 };
  35
  36 char *tune_file[] = {
  37         "music/magic.mod",
  38         "music/getzznew.mod",
  39         "music/4est_fulla3s.mod"
  40 };
  41
  42 int
  43 init_sound() {
  44         // Return 1 if the sound is ready to roll, and 0 if not.
  45
  46         int i;
  47         debug(printf ("Initialise sound\n"));
  48
  49         // Initialise output with SDL_mixer
  50         if (Mix_OpenAudio(MIX_DEFAULT_FREQUENCY, AUDIO_S16, MIX_DEFAULT_CHANNELS, 4096) < 0) {
  51         fprintf(stderr, "Couldn't open SDL_mixer audio: %s\n", SDL_GetError());
  52         return 0;
  53         }
  54
  55         debug(
  56                         // What kind of sound did we get?  Ah who cares. As long as it can play
  57                         // some basic bangs and simple music.
  58                         Mix_QuerySpec(&audio_rate, &audio_format, &audio_channels);
  59                         printf("Opened audio at %d Hz %d bit %s\n", audio_rate,
  60                                 (audio_format&0xFF),
  61                                 (audio_channels > 1) ? "stereo" : "mono");
  62                         )
  63
  64         // Preload all the tunes into memory
  65         for (i=0; i<NUM_TUNES; i++) {
  66                 if (!(music[i] = Mix_LoadMUS(add_path(tune_file[i])))) {
  67                         printf ("Failed to load %s\n",add_path(tune_file[i]));
  68                 }
  69         }
  70
  71         // Preload all the wav files into memory
  72         for (i=0; i<NUM_SOUNDS; i++) {
  73                 wav[i] = Mix_LoadWAV(add_path(wav_file[i]));
  74         }
  75
  76         return 1;
  77 }
  78
  79 void
  80 play_sound(int i)  {
  81         if(!opt_sound) return;
  82         debug(printf ("play sound %d on first free channel\n",i));
  83         Mix_PlayChannel(-1, wav[i], 0);
  84 }/*}}}*/
  85
  86 int playing=-1;
  87
  88
  89 void
  90 play_tune(int i) {/*{{{*/
  91         if(!opt_music) return;
  92         if (playing==i)
  93         return;
  94         if (playing) {
  95                 Mix_FadeOutMusic(1500);
  96                 debug(printf("Stop playing %d\n",playing));
  97         }
  98         debug(
  99                         printf ("Play music %d\n",i);
 100                         printf ("volume %d\n",music_volume[i]);
 101                         )
 102         Mix_FadeInMusic(music[i],-1,2000);
 103         Mix_VolumeMusic(music_volume[i]);
 104
 105         playing = i;
 106 }
 107
 108 /*
 109  *
 110  * The init_sound() routine is called first.
 111  * The play_sound() routine is called with the index number of the sound we wish to play.
 112  * The play_tune() routine is called with the index number of the tune we wish to play.
 113  *
 114  */