Re: [Opalvoip-user] Restrict devices before opening OPAL?

[Joseph R. <jro...@gm...>]

Have you looked at any of the sample programs?  I know those let you remove
codecs and choose output devices.  I'm pretty sure you can restrict your
input devices as well.  Why don't you take a look at those for this?

On Wed Feb 18 2015 at 9:02:42 PM jeremy ardley <jer...@gm...>
wrote:

> I use a small snippet of code to open the OPAL device in a SIP voice
> application
>
>   OpalHandle hOPAL;
>
>   unsigned version;
>
>   version = OPAL_C_API_VERSION;
>
>   if ((hOPAL = OpalInitialise(&version, OPAL_PREFIX_SIP " TraceLevel=4"))
> == NULL)
>
>   {
>
>     fputs("Could not initialise OPAL\n", stderr);
>
>     return false;
>
>   }
>
> However the OPAL instance wants to open a V4L2 device and fails since I
> don't have one.
>
> Can I prevent the OPAL instance from trying to open a V4L device and
> instead open an ALSA device?
>
> What calls prior to the OplaInitialise are required? Or is using the
> wrapper functions not suitable for this and I should use low level
> calls? Or does it require compile time switches? In all cases is there a
> link or tutorial I can use?
>
> I did searches on the error message phrase and not found much of use
> other than similar messages from apps using OPAL. I also looked through
> the doxygen documentation but it's a bit obscure about this. I also
> installed a 4VL device and got it to work O.K. but my target application
> won't have V4L.
>
> Any advice appreciated.
>
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