2012-03-22 10:29, Tanu Kaskinen skrev:
At least on Nokia N9 this patch helps reducing pops when
changing ports. Some earlier discussion:
http://lists.freedesktop.org/archives/pulseaudio-discuss/2011-September/011402.html
An earlier version of the first patch was submitted in
October, but it wasn't merged, and it didn't get any
comments either:
http://lists.freedesktop.org/archives/pulseaudio-discuss/2011-October/011803.html
Jarkko Nikula (2):
alsa: move pa_alsa_setting_select close to pa_alsa_path_select
alsa: Merge pa_alsa_setting_select with pa_alsa_path_select
Tanu Kaskinen (1):
alsa-mixer: Implement a new path option: "mute-during-activation".
src/modules/alsa/alsa-mixer.c | 34 ++++++++++++++++++-
src/modules/alsa/alsa-mixer.h | 4 +-
src/modules/alsa/alsa-sink.c | 14 ++------
src/modules/alsa/alsa-source.c | 15 ++-------
.../alsa/mixer/paths/analog-output.conf.common | 3 ++
5 files changed, 43 insertions(+), 27 deletions(-)
Ok, I have had a look at these patches. I like Jarkko's patches about
consolidating path_select and setting_select.
You're also starting to put the actual mute state into this function,
which is also a step towards what I've been thinking about, but not all
the way.
Ideally, I would like an algorithm that on path_select, took the new
mute and volume state into account, and did the following:
1) Calculated which alsa-kcontrols that needed to change, taking into
account the new mute as well as volume state.
2) For every kcontrol that needs to mute, mute it.
3) For every kcontrol that needs its volume lowered, lower it.
4) For every kcontrol that needs its volume raised, raise it.
5) For every kcontrol that needs to unmute, unmute it.
Note that the order of 2 - 5 is specifically meant to avoid volume bumps.
I was loosely thinking (i e, this is not a promise!) to do something
like this for PulseAudio 3.0. If I get around to do that, would such an
algorithm also remove your N9 clicking problem, without the need for a
mute-during-activation option?
--
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic
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