Audio crashing app occasionally on iOS

cocos2d-x C++
1

Hi, because SimpleAudioEngine is too simple for my app I was forced to use AudioEngine. I’m fully aware it’s in experimental package. However everything works except one bug, which happens occasionally. It happens when some sounds are playing and I switch scene. In destructor I’m calling
cocos2d::experimental::AudioEngine::uncache to free memory. Usually it works, but sometimes I’m getting following crash:

1ae8802599772389.png1406×567

I tried stopping sounds before uncaching like this:

setonExitTransitionDidStartCallback([&](){
        cocos2d::experimental::AudioEngine::stopAll();
});

Yet it’s still happening.
When I remove uncache method from destructor it’s no longer crashing, but I can’t free memory.

How can I fix this?

2

Help please :confused: ?

3

Stabbing in the dark here. Try calling uncache on the line before you switch scenes. The destructor of your scene may not be a safe time to call it.

4

Just tried it doesn’t work :confused: There’s sometimes different crash on some custom thread too and I personally think it’s some problem with async threads, which are used in AudioEngine.

5

Solved it different way!
I’ve added needed methods to SimpleAudioEngine. However I couldn’t add them all (only setVolume) for android, because it’s using soundpool which doesn’t support it.
For iOS I got these working with SimpleAudioEngine:

    virtual void setEffectVolume(unsigned int soundId, float volume);
    virtual bool isEffectPlaying(unsigned int soundId);
    virtual float getEffectVolume(unsigned int soundId);
    virtual void seekEffect(unsigned int soundId, float seconds);
    virtual float getEffectDuration(unsigned int soundId);
    virtual float getEffectPosition(unsigned int soundId);

For android we can use AudioEngine (experimental). As far as I know only getDuration doesn’t work to me (it returns -1) just after played sound. But it works 3 updates later :smile: