Re: OpenAL for flight simulator

Hi Guys,

Arti, this may help:

http://www.xsquawkbox.net/xpsdk/mediawiki/OpenAL_Example

(That is a sample plugin for X-Plane that plays OpenAL sounds. :-)  The 
wave loader in that sample may be the worst code I have written ever 
(and that says something!) so caution is advised...it's meant more as a 
sample than a good idea.

>> The next question is about hardware accelerated DSP (filters, reverb etc),
>> which cards it supports? is it available for other platforms than Windows?
> 
> I don't know about which hardware supports what, but using EFX, reverb and 
> low-pass filters are available in the software drivers. Outside of Windows, 
> EFX is also available in Linux with a non-ancient version. Under OSX, there's 
> a separate extension set to handle such effects, but I don't know too much 
> about it.

Right...the problem for someone targeting X-Plane (which runs on three 
platforms) is that there isn't a consistent cross-platform way to do 
effects processing that I know of, e.g. a "standard reverb" and a 
"standard EQ".

Chris, if I understood the streaming situation, without extensions it 
would be tough to get down to double buffering, because the app would 
have to poll to see when a buffer is marked as free (to refill and reuse 
it).  With just the base API would double-buffering be reliable at 
reasonably small buffer sizes?  (I looked at the alure API, which looks 
really useful, but I noticed it preps streams but doesn't 'feed' them 
into the sources.)

cheers
ben

-- 
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