On Mon, Jun 22, 2020 at 03:22:05PM +0200, Paolo Bonzini wrote:
> On 22/06/20 14:59, Thomas Huth wrote:
> >> +static int pcspk_audio_init_soundhw(ISABus *bus)
> >> +{
> >> + PCSpkState *s = pcspk_state;
> >> +
> >> + warn_report("'-soundhw pcspk' is deprecated, "
> >> + "please set a backend using '-global isa-pcspk.audiodev=<name>' instead");
> >> + return pcspk_audio_init(s);
> >> +}
> > While "-soundhw pcspk" is quite easy to use for the average user, I
> > think the "-global" options will be quite hard to figure out, especially
> > once this deprecation message got removed again when -soundhw has been
> > deleted. Could you maybe add a description how to configure the
> > pc-speaker to docs/system/target-i386-desc.rst.inc, too?
>
> -nic is an example of how a single option can work great for both
> built-in and custom devices, and perhaps we could design something like
> that for audio. For example you could have
>
> # configure a builtin or default audio device
> # and an ALSA audiodev
> -sound alsa
>
> # configure an external audio device and a PA audiodev
> # options other than "model" go to audiodev
> -sound pa,model=sb16,fixed-settings=off
>
> For more information: https://www.qemu.org/2018/05/31/nic-parameter/
>
> I think we can go ahead with the deprecation, but -global and -device
> are probably not good enough a replacement for actual removal.
-global is temporary, see patch 19/19 (guess I should reorder the series
and squash 19/19 to fix that confusion).
The plan is to have audio work simliar to block. -audiodev creates a
backend (like -blockdev). Properties are used to reference them.
Device properties in most cases, machine properties for builtin devices
(i.e. pcspk works like pflash then).
take care,
Gerd
