SDL_OpenAudio函数

SDL_OpenAudio函数：

用此函数来打开音响设备。

int SDL_OpenAudio(SDL_AudioSpec* desired,                  SDL_AudioSpec* obtained)

例子：

SDL_AudioSpec want, have;SDL_memset(&want, 0, sizeof(want)); /* or SDL_zero(want) */want.freq = 48000;want.format = AUDIO_F32;want.channels = 2;want.samples = 4096;want.callback = MyAudioCallback; /* you wrote this function elsewhere. */if (SDL_OpenAudio(&want, &have) < 0) {    SDL_Log("Failed to open audio: %s", SDL_GetError());} else {    if (have.format != want.format) {        SDL_Log("We didn't get Float32 audio format.");    }    SDL_PauseAudio(0); /* start audio playing. */    SDL_Delay(5000); /* let the audio callback play some sound for 5 seconds. */    SDL_CloseAudio();}

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