[SDL] SDL application crash when using Mix_CloseAudio

[Jacek Dylak]

Writing this e-mail made once again thinking about this problem. And, 
unfortunately, after sending it I have found problem in my code. Sorry for 
bothering you.
Best regards,
Jacek

Jacek Dylak napisał(a):
> Hi all,
> 
> I'm using the SDL to produce some visual and audio stimulation in our 
> experiments. For audio I am using SDL_Mixer. And I've got quite strange 
> problem with it. When using the Mix_CloseAudio in my code to cleanup at the 
> end of the SDL related part, the application crash when returning from the run 
> method which actually perform the experiment. But when the Mix_CloseAudio is 
> commented out the application works smoothly without any problems.
> 
> I can't let it be as it because the SDL part is executed on the top of the 
> normal setup window - the idea is to allow the user to run experiment several 
> times without exiting the application. And without Mix_CloseAudio, when the 
> experiment is executed for the second time there is no audio at all.
> 
> The experiment executing method is provided below with all SDL related code. 
> The SDL_Mixer has been added to the working correctly code, so I am quite sure 
> that the problem is somehow related to the SDL_Mixer.
> 
> Does anyone has any idea of how to solve it or maybe has similar problems?
> 
> Best regards
> Jacek
> 
> void run()
> {
>    ::SetEnvironmentVariableA( "SDL_VIDEODRIVER" , "directx" );
>    SDL_Init(SDL_INIT_TIMER|SDL_INIT_VIDEO|SDL_INIT_AUDIO);
>    const SDL_VideoInfo* vi = SDL_GetVideoInfo();
>    SDL_Surface* pScreen = SDL_SetVideoMode( pm.in_nScreenWidthPix , 
> pm.in_nScreenHeightPix , vi->vfmt->BitsPerPixel , SDL_FULLSCREEN | 
> SDL_HWSURFACE | SDL_DOUBLEBUF );
>    TTF_Init();
> 
>    Mix_OpenAudio( MIX_DEFAULT_FREQUENCY , MIX_DEFAULT_FORMAT , 2 , 512 );
>    Mix_AllocateChannels( 16 );
> 
>    //running experiment here - the code here does not call any
>    //SDL_Mixer related methods
> 
>    Mix_CloseAudio(); //commenting this line prevents app from crashing
>    TTF_Quit();
>    SDL_Quit();
> 
>    //actually the application crash occurs here, when returning from this method
> }
> 
> 
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