[FFmpeg-devel] default lock mechanism in libavcodec/utils.c

[anshul]

On 01/28/2014 08:31 PM, Michael Niedermayer wrote:
> if you had avcodec_unregister_all() you will have to deal with
> libgstreamer and libvlc calling it while your app is also
> calling it and maybe another lib calling register and yet another
> still using avcodec. all happening at the same time
>
> this can be solved in various ways, a lock and reference counting is
> one, another is to use some code that gets called on exit or
> lib unloading by the OS.
> I think none of these will be really easy to do portably

If I am planning to use some code that gets called when library is unloaded.
I do need static avcodec lock acess out of library, I have attached one 
patch
so that user might be able to call this function in his destructor of 
library

But your idea about reference count is very good, but I don't where to 
keep that
reference count variable, only thing that strike my mind was to make 
reference count variable global.
If you have any other way then making it global please ...


Thanks
Anshul


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