Use the context work queue to schedule destroys from callbacks.
This is better because we can pass the destroyed object around and
implement just the action we need to do on it.
Make a method to get a work-queue from the context. There is one
work-queue to use and the context will allocate it when requested
and free when destroyed.
The work queue is handy to delay execution of some logic for later,
either in the next iteration of the main-loop or when an async
operation completed.
Export some work-queue methods.
Make a null-sink with monitor.channel-volumes=true by default if not
defined otherwise. This ensures the volume of the null-sink is
always transfered to the monitor ports.
Also only set the object.linger flag when undefined.
This leaves us with the actual meson replacements at the top and, at least
IMO, makes the file easier to read - in part because $(foo) is
syntax-highlighted so variables stick out more.
If we have channels and channelmap, make sure they match.
If we have only channel_map, use this to derive channels instead of
taking the default number of channels and then ending up with a
mismatch.
If we have only channels, use this to generate a channelmap from
predefined maps or just unknown channels instead of taking the default
channel map.
If neither channels or channelmap is defined, use the defaults.
Move the icon we get from bluez to a separate property, it is not
a good icon to show.
Copy form factor from device to node properties.
Set device.bus in the device properties and copy it to the node
properties.
Use form factor and bus to make a nice icon-name for the node and
device.
Fixes#1064
Make libudev dependency required if v4l2 feature option is set to enabled or
auto, or if alsa dependency is found or enabled through pipewire-alsa or alsa.
Add necessary apis to bluez transport.
Add A2DP(AVRCP) absolute volume support. Source volume can only update to adapter node but not from due to AG nodes don't have route.
Since A2DP/HSP/HFP volume is already percentage itself, it has been mapped to pulseaudio volume then converting to linear volume.
