c/sdl-old/main.c

   1 #include <stdlib.h>
   2 #include <SDL.h>
   3 #include <SDL_mixer.h>
   4
   5 const max_sounds=50;
   6 Mix_Chunk *sounds[max_sounds];
   7 Mix_Music *music;
   8
   9 //kanaly
  10 enum {
  11 SNDT_0,
  12 SNDT_1,
  13 SNDT_2,
  14 SNDT_3,
  15 SNDT_4,
  16 SNDT_5,
  17 SNDT_6,
  18 SNDT_7
  19 };
  20
  21 //zvuky
  22 enum {
  23 SND_ZVUK,
  24 SND_NUM
  25 };
  26
  27 int main(int argc,char *argv[])
  28 {
  29 if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) {
  30     fprintf(stderr, "Problem: %s\n", SDL_GetError());
  31     exit(1);
  32 }
  33 atexit(SDL_Quit);
  34
  35 //frekvence 22050 Hz
  36 //MIX_DEFAULT_FORMAT - Signed 16-bit zvuky, v systemovem bytovem poradi (little,big endian)
  37 //mono-stereo: pro mono vlozte 1, pro stereo 2
  38
  39 if (Mix_OpenAudio(22050/*frekvence [Hz]*/, MIX_DEFAULT_FORMAT, 2/*mono-stereo*/,1024/*velikost bloku*/)==-1)
  40 {
  41     fprintf(stderr,"Mix_OpenAudio: %s\n", Mix_GetError());
  42     exit(1);
  43 }
  44
  45  sounds[SND_ZVUK] = Mix_LoadWAV("zvuk.wav");
  46 if (sounds[SND_ZVUK]==NULL)
  47 {
  48     fprintf(stderr,"zvuk [zvuk.wav] nebyl nahran\n");exit(2);}
  49
  50  //kanal: -1 pro prvni volny kanal
  51 //pocet opakovani x: zvuk se bude opakovat x+1 krat,x=-1 pro stale opakovani.
  52 Mix_PlayChannel(-1/*kanal*/,sounds[SND_ZVUK]/*Mix_Chunk*/,0/*pocet opakovani*/);
  53
  54  music=Mix_LoadMUS("music.mp3");
  55 if (!music) {
  56     printf("Mix_LoadMUS(\"music.mp3\"): %s\n", Mix_GetError());
  57     exit(2);
  58 }
  59
  60 //pocet opakovani x: hudba se bude opakovat x krat,x=-1 pro stale opakovani.
  61 //postupne zvysuje hlasitost hudby od 0 do 100% za 2000 ms po spusteni
  62
  63 Mix_FadeInMusic(music, -1/*pocet opakovani*/,2000 /*cas[ms]*/);
  64
  65 //lze i jen provest pouhe spusteni hudby
  66 //Mix_PlayMusic(music, -1/*pocet opakovani*/);
  67
  68 SDL_Delay(5000);
  69
  70  //ztlumi hudbu az do ticha a vypne
  71 Mix_FadeOutMusic(2000);
  72
  73 SDL_Delay(1000);
  74
  75 Mix_CloseAudio();
  76 return 0;
  77 }