Add PropInfo for all the params that we can configure at construct
time and also add them as PROP_params.
This way you can configure the headroom at runtime with this:
pw-cli s <id> Props '{ params = [ "api.alsa.headroom" 1024 ] }'
Expose the card object and always obtain one per pcm.
Keep the configured format in the card object.
Add a api.alsa.multi-rate property. When multi_rate is disabled,
only allow the last configured card rate on all PCMs.
This works around drivers that can't handle multiple samplerates
on their PCMs.
With this patch it should be mostly safe to configure multiple
sample rates in pipewire.conf
See #1547
The pulseaudio channel map can only hold 32 AUX channels and we reuse
them when we need more. When we find a duplicate channel, map it to the
next AUX channels.
For SPA libraries that we link against elsewhere in the tree, declare a
declare a dependency "foo_dep" for that library that specifies how to
link to it. Then use that dependency in the various targets.
This removes the knowledge of how to link with the library from the
target which can treat it as just another dependency.
In the case of optional libraries (e.g. the journal support lib) we can
then use declare_dependency() to declare an empty dependencies and thus
link them unconditionally in the target.
We need to first mark the removed port as invalid, and then look for the
last valid port in the port array otherwise last_port becomes 0 and
midi dataflow stops.
Fixes#1601
The calculation of the elapsed time is actually not a good idea because
it becomes larger and larger and a tiny change in the rate could result
in a large difference that would make things fail quickly.
Until that is fixed, this patch will need to do..
Get the ucm prefix only once, when we open the UCM card and then
use it for all devices using the card.
Construct the device name right before we open it with the ucm prefix
and possibly the AES flags instead of messing with the property.
Just like the latency, move the codecs to the device Route param.
This way, it is easier for the session manager to save and restore
the codecs as part of the Route settings.
Use the param user field to tag changes in the params.
codec changes emits an EnumFormat and Props change.
Accumulate various param changes and emit them together.
ALSA has problems with creating more than 8 configs per card so cache
the config per card and reuse it.
Fixes problems with no devices after logging out and in again because
ALSA can't create UCM profiles anymore.
See #1553
For hdmi and iec958 devices, enumerate the iec958 formats and
codecs. Initially only PCM is supported as a codec but with
a property or an init option, the list of codecs can be dynamically
configured.
This property is exposed on the device Route and forwarded to the
nodes. It then configured the process_latency.ns field, which
influences the reported port latency.
This makes it possible to change the internal port latency on the
sink and source with pavucontrol and tweak the synchronization to
compensate for internal latencies in the device.
