[Openal-devel] ALC_EXT_STATIC_BUFFER

[Bob Aron]

Richard,

I'm not sure if there are other OpenAL implementations of the static  
buffer extension. As far as the Mac OSX implementation goes, it is  
important that the buffer memory NOT be deleted while still in use. In  
practice, that means that the same rules apply to static buffer  
objects as regular buffer objects. If calling alDeleteBuffers() is  
successful and produces no error, then it is safe to delete the buffer  
memory. The same goes for changing the data pointed to by the OpenAL  
Buffer object. If calling alBufferDataStatic (or alBufferData) is  
successful on a buffer object, then it is safe to delete your memory.

This extension is a very sharp knife in that if the application  
deletes the audio data memory while it is still  being used in the  
render chain, it is going to cause a crash.

-bob aron
____________________________________________
CoreAudio Team • Apple Inc.
baron at apple.com


On Jul 6, 2009, at 12:42 PM, Richard Furse wrote:

> Hi there - does anyone know where the documentation for the
> ALC_EXT_STATIC_BUFFER extension is? I can't find it in the  
> repository. This
> is the extension that documents alBufferDataStatic(). I'm wondering
> particularly if it allows any special behaviour around buffer  
> deletion...
>
> Cheers,
>
> --Richard
>
>
> _______________________________________________
> Openal-devel mailing list
> Openal-devel at opensource.creative.com
> http://opensource.creative.com/mailman/listinfo/openal-devel





-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://opensource.creative.com/pipermail/openal-devel/attachments/20090709/9878443c/attachment.html