Re: Activation of Speech Dispatcher under squeeze
Hi,
On Fr, Sep 24, 2010 at 11:42:47 +0200, Hynek Hanke wrote:
> This is not so easy as just writing audio to roots default
> soundcard. The root would need to know which is the
> proper audio device for the target user, and that is being
> assigned dynamically in Pulse Audio, AFAIK.
>
> I don't think it is Speech Dispatcher's task to, for every
> user, query their current audio device setup, listen for
> fallbacks on sink changes in PA etc. This sounds difficult!
Colin Guthrie from Pulseaudio project wrote this about the prefered
design how things can work nicely togehter:
--
speech-dispatcher itself can do all the necessary work in a system-wide
process but only the speech-dispatcher-agent will actually cause any
audio to be output. The agent runs as the same user as the PA process
(whether this be the pseudo session's "user" or the real user).
----
Well this approach would avoid running several speech-dispatcher in several
sessions etc. Only the agent which outputs audio needs to change the
sessions from time to time and use the available output
(pulse/alsa/...).
This would provide a11y for _all_ screenreaders without doing difficult
userspace handling.
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