desklink: recycle MixerControl and correctly release media nodes.

Change-Id: Id00a7fdb3bfd995bf6891bac85d21931f527606c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2237
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Reviewed-by: Stephan Aßmus <superstippi@gmx.de>

desklink: use media_server notifications instead of polling.

* This removes Pulse(), which would constantly reconnect to
the mixer. With the previous changes to the
DefaultMediaTheme, this also makes changes to the muted
state instaneous when modified by some other app.

MixerControl: Add more safeness for Roster() errors

desklink: Fix problems with BMediaRoster Quit

* Improved the situation so that it should be always
synchronized. Improved error message, and detection
of media services not being run.

Fix #10302.

- In the case of an error while unflattening, BMediaRoster::GetParameterWebFor()
would allocate a new parameter web object into the passed in web pointer, and
then delete it again. This would result in the desklink MixerControl object having
a bogus pointer in its fParameterWeb member, leading to a crash. As such, create
the object in a local variable first, and only overwrite the passed in pointer on
success. Furthermore, explicitly reset said pointer to NULL in desklink on failure,
as _Disconnect() tries to delete it unconditionally.

MediaReplicant: Middle button mute/unmute support

* Add mute/unmute support by clicking middle mouse button
on media replicant;
* Fixes #7468.

- GCI 2013

CID 1515 : Wrong pointer type.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38137 a95241bf-73f2-0310-859d-f6bbb57e9c96

* With the help of Stippi's "I Will Survive" article, the VolumeControl
replicant should now handle media server restarts, or late starts gracefully.
* This fixed ticket #4002.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31322 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The mixer node is now exported.
* The node is no longer allocated separately.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30060 a95241bf-73f2-0310-859d-f6bbb57e9c96

Missing include for strcmp.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30035 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Restructured the sources a bit, renamed SliderView to VolumeControl,
VolumeSlider to VolumeWindow.
* The VolumeControl is now a replicant, and be be dragged to the Tracker.
* Hence, moved all volume control stuff from VolumeWindow into the
VolumeControl class directly.
* Changed menu a bit. Note that controlling the physical output currently
does not work, but that's a problem of the media node in question (probably
the multi audio add-on, I'll have a look).
* Added a small delay when clicking on the slider directly before the window
is hidden, so that you'll get some feedback of your action.
* Added --add-volume, and --volume-control options to "desklink", the former
adds the volume control icon to the deskbar, the latter opens the volume
control window directly.
* Further cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30031 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced the volume slider with one looking just like any other slider.
* This is still work in progress, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30014 a95241bf-73f2-0310-859d-f6bbb57e9c96

MixerControl: Add more safeness for Roster() errors

desklink: Fix problems with BMediaRoster Quit

* Improved the situation so that it should be always
synchronized. Improved error message, and detection
of media services not being run.

Fix #10302.

- In the case of an error while unflattening, BMediaRoster::GetParameterWebFor()
would allocate a new parameter web object into the passed in web pointer, and
then delete it again. This would result in the desklink MixerControl object having
a bogus pointer in its fParameterWeb member, leading to a crash. As such, create
the object in a local variable first, and only overwrite the passed in pointer on
success. Furthermore, explicitly reset said pointer to NULL in desklink on failure,
as _Disconnect() tries to delete it unconditionally.

MediaReplicant: Middle button mute/unmute support

* Add mute/unmute support by clicking middle mouse button
on media replicant;
* Fixes #7468.

- GCI 2013

CID 1515 : Wrong pointer type.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38137 a95241bf-73f2-0310-859d-f6bbb57e9c96

* With the help of Stippi's "I Will Survive" article, the VolumeControl
replicant should now handle media server restarts, or late starts gracefully.
* This fixed ticket #4002.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31322 a95241bf-73f2-0310-859d-f6bbb57e9c96

* The mixer node is now exported.
* The node is no longer allocated separately.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30060 a95241bf-73f2-0310-859d-f6bbb57e9c96

Missing include for strcmp.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30035 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Restructured the sources a bit, renamed SliderView to VolumeControl,
VolumeSlider to VolumeWindow.
* The VolumeControl is now a replicant, and be be dragged to the Tracker.
* Hence, moved all volume control stuff from VolumeWindow into the
VolumeControl class directly.
* Changed menu a bit. Note that controlling the physical output currently
does not work, but that's a problem of the media node in question (probably
the multi audio add-on, I'll have a look).
* Added a small delay when clicking on the slider directly before the window
is hidden, so that you'll get some feedback of your action.
* Added --add-volume, and --volume-control options to "desklink", the former
adds the volume control icon to the deskbar, the latter opens the volume
control window directly.
* Further cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30031 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced the volume slider with one looking just like any other slider.
* This is still work in progress, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30014 a95241bf-73f2-0310-859d-f6bbb57e9c96