[PATCH powerd] audio inhibit support

[Walter Bender]

On Sun, May 20, 2012 at 7:00 PM, Sascha Silbe <silbe at activitycentral.com> wrote:
> I've spent the weekend getting OLPC OS 12.1 to run on XO-1, XO-1.5 and XO-1.75
> (which was surprisingly hard due to several bugs in addition to
> incompatibilities with some of the SD cards and USB sticks I have) and
> testing audio inhibit support.
>
> The result can be summarised as: Some Activities (and probably a number of
> Gnome applications) still keep the audio device open longer than necessary,
> but that's a problem of its own (preventing other Activities from using the
> audio device) and it's working well enough in general to enable audio inhibit
> support.
>
> In detail:
>
> - tested manually in OLPC OS 12.1 build 9 on XO-1.5, using powerd in
>  OLPC OS 12.1 build based on 25b1866 on XO-1.75
> - well-behaved, releasing the device even when switching to a
>  different window (Activity):
>  - Clock v8
>    - but inhibits suspend while running
>  - Record v96
> - well-behaved, releasing the device when done recording/playing a
>  sound:
>  - Portfolio v21

Prob. should fix this for Portfolio.

>  - Turtle Art v138

For TA, this is by design: if you are recording data, you want to keep
recording even when in the background. Same goes for Measure.
For playback it should release the device.

>  - Distance v31
>    - suspend inhibit due to network usage
> - releasing the device only when switching to a different window
>  (Activity):
>  - TamTam Jam/Mini/Edit/SynthLab v63
>  - Etoys v113 (after first sound)
>  - Speak v38
> - some quirks:
>  - Browse v137: releases device when navigating to a different URI,
>    but not on pause (<space>; no controls visible so can't try stop)
> - bad, leaving device open after first use:
>  - Scratch v22
>  - Jukebox v24
>    - but rather buggy anyway: didn't play the same entry picked via
>      Object Picker twice (file gone), crashed when trying to play the
>      same entry resumed from Journal twice
>
>
> Sascha Silbe (1):
>  Inhibit suspend while audio device is open
>
>  powerd |   14 ++++++--------
>  1 files changed, 6 insertions(+), 8 deletions(-)
>
> --
> 1.7.9
>
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-- 
Walter Bender
Sugar Labs
http://www.sugarlabs.org