Re: first call to alSourcePlay problem

Hi,

Wow - that's pretty bizarre.  I was able to reproduce the problem here
using the "Generic Software" device on Windows XP.  I've not encountered
this issue before - so I think it might be related to the kind of audio
file you are playing - it looks quite manufactured rather than sampled from
the real world.  It could be an issue with the sample-rate conversion or
perhaps something that is not initialized correctly inside OpenAL.   I'll
need to look into this further.

Dan
Creative Labs (UK) Ltd.

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             Alan Witkowski                                                
             <alan.witkowski@g                                             
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                                       [Openal] first call to alSourcePlay 
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So i'm running into this weird problem with OpenAL on Windows. The first
time i call alSourcePlay, the audio sounds a little different. Subsequent
calls to the same source work fine. I suppose it could be related to
popping or clicking, but it's more subtle.

I'm currently using stb_vorbis to decode an ogg file, but i've tried this
with wav files and ALUT. I've also tried different sound files. Same thing.

I did try the alutHelloWorldBuffer function, and that seems to play fine. I
wonder if different sample rates / settings affect this problem
differently.

This problem does not occur under Ubuntu 9.10. I've tried Windows 7 and XP
with the same results. I'm using the latest SDK / bins.

I created a test project if anyone else wants to give it a go:
http://www.cs.utah.edu/~witkowsk/files/audtest.zip

If you go into the working directory and run audtest.exe, 3 sounds will
play. The first one sounds kind of like a plastic bat, the next 2 play just
fine.

Anyone else run into this?

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