2 Aug
2010
2 Aug
'10
3:59 a.m.
Hi all,
I've acquired a pair of wireless headphones; the type thathas a USB
dongle that plus into amy machine and uses analog FM to communicate
with the headphones.
These JustWorked(tm) under linux, but now I'd like to have audio
(either PulseAudio or ALSA) auto switch to the headphones whenever
they are plugged in.
Is this doable? Any hints?
Cheers,
Erik
--
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/
2 Aug
2 Aug
4:36 a.m.
On Sun, Aug 1, 2010 at 9:59 PM, Erik de Castro Lopo
<mle+la(a)mega-nerd.com> wrote:
Hi all,
I've acquired a pair of wireless headphones; the type thathas a USB
dongle that plus into amy machine and uses analog FM to communicate
with the headphones.
These JustWorked(tm) under linux, but now I'd like to have audio
(either PulseAudio or ALSA) auto switch to the headphones whenever
they are plugged in.
Is this doable? Any hints?
ALSA can definitely detect the jack insertion. However, it requires a
user-space app that is paying attention to the "switch". It won't do
it automatically. You can either investigate PulseAudio, which is
certainly used for this purpose on a variety of mobile devices, or
you'd have to write an additional app yourself.
sorry this is not more helpful.
5:12 a.m.
Paul Davis wrote:
On Sun, Aug 1, 2010 at 9:59 PM, Erik de Castro Lopo
<mle+la(a)mega-nerd.com> wrote:
Not a jack in this case, a USB device that identifies itself as a
USB audio device.
Hi all,
I've acquired a pair of wireless headphones; the type thathas a USB
dongle that plus into amy machine and uses analog FM to communicate
with the headphones.
These JustWorked(tm) under linux, but now I'd like to have audio
(either PulseAudio or ALSA) auto switch to the headphones whenever
they are plugged in.
Is this doable? Any hints?
ALSA can definitely detect the jack insertion. However, it requires a
user-space app that is paying attention to the "switch".
Would this info be available over DBus?
Cheers,
Erik
--
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/
5:48 a.m.
On Sun, Aug 1, 2010 at 11:12 PM, Erik de Castro Lopo
<mle+la(a)mega-nerd.com> wrote:
meh, sorry, i wasn't paying attention.
jack insertion events are not, AFAIK. device insertions probably are,
and are likely to be what pulseaudio uses (given that lennart is a big
fan of dbus for this kind of thing)
Paul Davis wrote:
ALSA can
definitely detect the jack insertion.
Not a jack in this case, a USB device that identifies itself as a
USB audio device. However, it
requires a
user-space app that is paying attention to the "switch".
Would this info be available over DBus? 
10:26 a.m.
On Sun, Aug 01, 2010 at 11:48:38PM -0400, Paul Davis wrote:
Should be easy to detect in udev, and from there you can call
any app you like.
Ciao,
--
FA
There are three of them, and Alleline.
Would this
info be available over DBus?
jack insertion events are not, AFAIK. device insertions probably are,
and are likely to be what pulseaudio uses (given that lennart is a big
fan of dbus for this kind of thing) 
10:33 a.m.
On Sun, Aug 1, 2010 at 8:12 PM, Erik de Castro Lopo
<mle+la(a)mega-nerd.com> wrote:
Paul Davis wrote:
It's my understanding that HAL is being phased out in favor of
libudev. Writing an application like what you're describing (i.e.
watch for a specific USB device to appear or disappear) is very simple
with the udev_monitor functions.
-w
On Sun, Aug 1, 2010 at 9:59 PM, Erik de Castro
Lopo
<mle+la(a)mega-nerd.com> wrote:
Not a jack in this case, a USB device that identifies itself as a
USB audio device.
Hi all,
I've acquired a pair of wireless headphones; the type thathas a USB
dongle that plus into amy machine and uses analog FM to communicate
with the headphones.
These JustWorked(tm) under linux, but now I'd like to have audio
(either PulseAudio or ALSA) auto switch to the headphones whenever
they are plugged in.
Is this doable? Any hints?
ALSA can definitely detect the jack insertion. However, it requires a
user-space app that is paying attention to the "switch".
Would this info be available over DBus?
10:47 a.m.
On Mon, August 2, 2010 1:33 am, Will Light wrote:
On Sun, Aug 1, 2010 at 8:12 PM, Erik de Castro Lopo
<mle+la(a)mega-nerd.com> wrote:
It seems like PA should already support this somehow. Perhaps something
todo with :
pactl set-default-sink <soundcard>
--
Patrick Shirkey
Boost Hardware Ltd.
Paul Davis wrote:
It's my understanding that HAL is being phased out in favor of
libudev. Writing an application like what you're describing (i.e.
watch for a specific USB device to appear or disappear) is very simple
with the udev_monitor functions.
On Sun, Aug 1, 2010 at 9:59 PM, Erik de Castro
Lopo
<mle+la(a)mega-nerd.com> wrote:
Not a jack in this case, a USB device that identifies itself as a
USB audio device.
Hi all,
I've acquired a pair of wireless headphones; the type thathas a USB
dongle that plus into amy machine and uses analog FM to communicate
with the headphones.
These JustWorked(tm) under linux, but now I'd like to have audio
(either PulseAudio or ALSA) auto switch to the headphones whenever
they are plugged in.
Is this doable? Any hints?
ALSA can definitely detect the jack insertion. However, it requires a
user-space app that is paying attention to the "switch".
Would this info be available over DBus?
5228
days inactive
5228
days old
linux-audio-user@lists.linuxaudio.org
6 comments
5 participants
participants (5)
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Erik de Castro Lopo -
fons＠kokkinizita.net -
Patrick Shirkey -
Paul Davis -
Will Light