Re: Funded project(s) to improve Linux emulation

[Stephen Borrill <netbsd%precedence.co.uk@localhost>]

On Tue, 10 Nov 2020, nia wrote:
> On Tue, Nov 10, 2020 at 06:36:06PM +0100, Martin Husemann wrote:
> >  - Improve linux audio support
>
> Does anyone know what's needed yet?

What springs to mind is that when running the existing net/citrix_ica 
package (or any update of it that will run under current levels of Linux 
emulation), it negotiates a very low bit (8k) rate even when told to use 
the best it can. I assume that it is relying on undefined behaviour from 
some of the ioctls it is using. For instance, when you perform mixer 
operations from within a remote desktop sessoin it does them on the audio 
devices, not mixer. This used to return an error which then killed audio 
for the remainder of the session. Many years ago, I made it so that mixer 
operations would fall though and complete successfully (can't find the 
commit now).

So probably just requires tracing the syscalls and seeing what is 
requested and returned.

--
Stephen