Re: virtio-sound Google Summer of Code project?

["Alex Bennée" <alex.bennee@linaro.org>]

Stefan Hajnoczi <stefanha@gmail.com> writes:

> On Tue, 31 Jan 2023 at 12:43, Alex Bennée <alex.bennee@linaro.org> wrote:
>>
>>
>> Stefan Hajnoczi <stefanha@gmail.com> writes:
>>
>> > On Sun, 29 Jan 2023 at 17:10, Stefan Hajnoczi <stefanha@gmail.com> wrote:
>> >>
>> >> Hi Shreyansh, Gerd, and Laurent,
>> >> The last virtio-sound RFC was sent in February last year. It was a
>> >> spare time project. Understandably it's hard to complete the whole
>> >> thing on weekends, evenings, etc. So I wanted to suggest relaunching
>> >> the virtio-sound effort as a Google Summer of Code project.
>> >>
>> >> Google Summer of Code is a 12-week full-time remote work internship.
>> >> The intern would be co-mentored by some (or all) of us. The project
>> >> goal would be to merge virtio-sound with support for both playback and
>> >> capture. Advanced features for multi-channel audio, etc can be stretch
>> >> goals.
>> >>
>> >> I haven't looked in detail at the patches from February 2022, so I
>> >> don't know the exact state and whether there is enough work remaining
>> >> for a 12-week internship. What do you think?
>> >
>> > Adding Anton.
>> >
>> > I have updated the old wiki page for this project idea and added it to
>> > the 2023 ideas list:
>> > https://wiki.qemu.org/Internships/ProjectIdeas/VirtioSound
>> >
>> > Please let me know if you wish to co-mentor this project!
>>
>> I'd be happy to help - although if someone was rust inclined I'd also be
>> happy to mentor a rust-vmm vhost-user implementation of VirtIO sound.
>
> Maybe Gerd can tell us about the QEMU audio subsystem features that
> may be lost if developing a standalone vhost-user device.
>
> Two things come to mind:
> 1. May not run on all host OSes that QEMU supports if it supports
> fewer native audio APIs than QEMU.
> 2. May not support forwarding audio to remote desktop solutions that
> stream audio over the network. I don't know if/how this works with
> VNC/RDP/Spice, but a separate vhost-user process will need to do extra
> work to send the audio over the remote desktop connection.

Hmm good point. Maybe a stretch goal?

>
> I have CCed Marc-André for information on streaming audio over remote desktop.
>
> Stefan


-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro