sdl_boilerplate.c

const int SAMPLE_RATE = 44100;
const int BUFFER_SIZE = 4096;

void callback(void *userdata, Uint8 *stream, int len) {
  for (int i = 0; i < len; i++) {
    stream[i] = /* ADD SAMPLE HERE */ ;
  }
}

int main() {
    if (SDL_Init(SDL_INIT_AUDIO | SDL_INIT_EVENTS) < 0) {
	    printf("Failed to initialize SDL: %s\n", SDL_GetError());
	    return 1;
	}
	SDL_AudioSpec spec = {
      .format = AUDIO_F32,
      .channels = 1,
      .freq = SAMPLE_RATE,
      .samples = BUFFER_SIZE,
      .callback = callback,
	};

	if (SDL_OpenAudio(&spec, NULL) < 0) {
	    printf("Failed to open Audio Device: %s\n", SDL_GetError());
	    return 1;
	}

	SDL_PauseAudio(0);
	while (true) {
		SDL_Event e;
		while (SDL_PollEvent(&e)) {
			switch (e.type) {
			case SDL_QUIT:
				return 0;
			}
		}
	}
	return 0;
}