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SDL Wiki


This function is a legacy means of unlocking the audio device. New programs might want to use SDL_UnlockAudioDevice() instead.


void SDL_UnlockAudio(void)

Code Examples

void MyAudioCallback(void *userdata, Uint8* stream, int len)
    printf("The audio callback is running!\n");
    SDL_memset(stream, 0, len);  // just silence.
    printf("The audio callback is done!\n");

// don't lock for 2 seconds at a time in real life, please.
SDL_Delay(2000);  // callback runs for 2 seconds.
printf("The audio callback can't be running right now!\n");
SDL_Delay(2000);  // callback doesn't run for 2 seconds.
printf("Ok, unlocking!\n");
SDL_Delay(2000);  // callback runs for 2 seconds.


This function is equivalent to calling


and is only useful if you used the legacy SDL_OpenAudio() function.


CategoryAPI, CategoryAudio

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