Re: [openvrml-develop] Sound in OpenVRML

[Thomas F. <tf...@us...>]

Braden McDaniel wrote:

>Quoting -oli- <ol...@fr...>:
>
>>At 09:06 12.03.2002 -0500, you wrote:
>>
>>>It [sound] was disabled a few releases ago. It was a matter of convenience
>>>
>>>then.
>>>And I intended for it to be replaced with something better. I still do;
>>>but I didn't anticipate having to wait this long. In retrospect, I wish
>>>I hadn't disabled it. However, I now have higher priorities than turning
>>>it back on.
>>>
>>Oh, I understand!
>>Was there distance attenuation, spatalizing etc.?
>>
>
>I'm not sure... All the code is still there in CVS.
>

I'm about 99% sure there's no distance attenuation, spatializing or 
anything else except for looping support...the code only works on Linux 
and I think the only things that need to be done to get it to compile is 
to define HAVE_SOUND and add the sound code back to the makefiles. If I 
can find the time, I'll generate a patch to get this readded to the 
build until we have a better solution...

>>>If you want to submit a patch to enable the sound support, it would be
>>>welcome.
>>>
>>I'm thinking about integrating OpenAL-support in OpenVRML, but there are 
>>major incompatibilities between the directivity model used in OpenAL 
>>(cones) and VRML (ellipsoids). I'm trying to find a solution here...
>>
>
>I know Tom Flynn has done some work to this end. Hopefully he'll chime in.
>

-oli- contacted me a month or so ago about this and I wasn't able to 
give him any answers as I never made it that deep into integrating OpenAL...


<snip>

>>I have also not the understanding of OpenVRML to see in which (main-?)loop 
>>the next chunk of the wave-file can be handed to the sound buffer...
>>Tips are welcome!
>>
>
>Check out the old sound code.
>

NodeAudioClip::update (in vrml97node.cpp) is called on each loop so 
that's one place where you could do it...

Tom