Sync is enabled when clients need time to move to a new location.
It's a bit like GStreamer preroll after a seek. Clients that need
time, increment the sync_total. Whenever a seek is done, the server
waits in the Starting state until the sync_pending is 0 (or timeout
later).
Improve atomic operations
Add an offset to apply to the clock time before we can compare to the
segment values. This way we can keep the segment start independent of the
clock values and we only need to adjust the offset when paused. It's
like the base_time in GStreamer to calculate the running time.
Move fields from the io_position to io_segment. The segment contains
the mapping between raw clock time and stream time in various
formats. We keep an array of pending segments available in the
io_position field so clients can anticipate changes.
Make looping a flag in the segment instead of a state.
Prepare for segment masters. These will be registered clients that
are responsible for updating parts of the extended segment info.
Add namespace to some defines.
Move some things around. Move the duration of the current cycle
to the clock. Also add the estimated next timeout to the clock.
Add a generic media specific counter to the clock.
Clean up the position_bar info. We can do with only a double beat
value and make the signature in floats.
Flesh out the io_position info. This has now the information needed
to convert a raw clock time into a stream time. It basically has
the same kind of features as GStreamer segments such as looping,
variable rate playback etc.. It also contains the state of the
timeline (paused/playing) and it can be used to update the position
and state from clients.
There is also extended information in the position field that
clients can update when they can.
Plugins basically only update the clock info they get (and use
the position info to check if they are slaved or not).
Before each cycle, check if there is a pending position update and
apply it.
Add flag to always assign a node to a driver. This makes sure that
even when the node is not linked to anything, it will still be
scheduled by an active driver. This is needed for JACK support.
clean_convert() removes the internally negotiated formats but
it does not set the format (or buffers) of the externally visible
ports. Therefore, don't clear the buffers_set flags.
Instead, clear the buffers_set flag when we explicitly reconfigure
the ports, when we also clear the format.
Also clear the port buffers when we set a NULL format.
Fixes#178
Makes a device with a source and sink that automatically
proxies all physical ports from jack. Jack then drives our
PipeWire pipeline from its own thread.
Getting SO_PEERSEC on distributions that do not use a LSM by default,
results always in a "protocol error", which is just annoying and not
a real problem for pipewire's operation.
Remove the parent_id from the global event. Remove the parent
and owner from the global object.
Use properties instead to mark parents and owners of objects.
Properties are easier to control for client exported objects and
usually a simple parent/child is not enough. For example, a client
exported node has the client as a parent but also the factory that
created the node.
Set the drained flag.
If the server calls us and we're out of buffers and the drained
flag is set, emit the drained signal.
Deactivate the node on disconnect.
Make sure we have no more pending process callbacks in the invoke
queue before when we pause.
When we do invoke from the loop thread, first process the pending
invoke items before handling ours. This can be used to sync the
invoke queue before cleanup.
