Juk & kdemm power management inhibition

Harald Sitter sitter at kde.org
Thu May 23 14:52:48 BST 2013

On Thu, May 23, 2013 at 3:15 PM, James Daniel Smith <smithjd15 at gmail.com>wrote:

> Here is a more robust version of the patch, made with the VLC backend in
> mind. Juk has a problem vis. sleepInhibit with the way Phonon
> stateChanged handles the VLC backend vs the GStreamer backend which
> seemed to work fine on both play and stop / pause instances (again vis.
> sleepInhibit)

that's because (from v3)...

if(oldstate != Phonon::PlayingState)

...is a bogus statement as BufferingState is concurrent to Play/Pause. so
you would have had to track the original oldstate whenever Phonon goes into

the correct handling in general should be:
- inhibit when going into Playing and there is no existing inhibition
- lift inhibition when going into Paused/Stopped/Loading/Error and there is
an existing inhibition

so the general idea should be to lift/establish inhibition regardless of
the playback state history but the *current* state and whether or not an
inihibition is present already. that being said v4 is still wrong as it
only lifts the inhibition when going into stopped and paused.

for example:

#define NOCOOKIE -1
switch(state) {
case Paused|Stopped|Loading|Error:
if (cookie != NOCOOKIE) {
 cookie = NOCOOKIE;
case Playing:
if (cookie == NOCOOKIE)
 cookie = beingSupressionBlahBlah();

also please consider using reviewboard

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