[MPlayer-dev-eng] [PATCH] ao_sdl buffering change

[Reimar Döffinger]

Hi,
this is something I've been playing around with a bit. It doesn't make 
too much sense except from a theoretical standpoint, but if you have 
time please look at it and comment, test etc. anyway.
Currently ao_sdl uses a ringbuffer consisting of 8 seperate buffers, for 
which I can't see any reason at all. In addition it isn't thread safe, 
which it should be as SDL might use a different thread for playback of 
the sound.
This implementation uses a type of ringbuffer that should provide enough 
thread-safety for this special case while not requiring synchronization.
I'm not sure if this is more likely to increase or decrease performance, 
I doubt there will be much change. Feel free to test if you want ;-)

Greetings,
Reimar Döffinger
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