[Openal] Open Capture Device fails with "invalid argument"

[Stefan Kögel]

Huh, it did not work for me.

I compiled openAl 1.7.411 and changed the buffer size to various amounts...

ALCdevice *CaptureDevice=alcCaptureOpenDevice(NULL, 11025 ,
AL_FORMAT_MONO16, 48);

What I get is:

AL lib: alsa.c:612: set access failed: Invalid argument
AL lib: ALc.c:1352: exit(): closing 1 Device

Is a buffer size of 48 still to big?

Kind regards, Stefan

Chris Robinson wrote:
> This is a result of the requested buffer size being too large for ALSA to 
> provide.
>
>   
>> What can I do to fix this?
>
> The simplest way is to use a smaller buffer size, though that means you'll 
> have to make sure to read and use the captured samples more frequently.
>
> Otherwise, try upgrading to a newer version of OpenAL Soft, if possible. They 
> have a fallback to use an intermediate buffer if ALSA can't give a large 
> enough one.
>
>
>