The id is useless when dealing with props params, we need to use the
name of the property as the key. Also the id can clash with other ids
of other plugins.
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
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.
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.
Move the code to check the position duration for changes to one
new method.
Also check for samplerate changes and adjust the resampler state
accordingly.
Use _alibpref to check if a device needs a UCM local config. Mark
the device as such and use this to set the OPEN_UCM property on
the device.
Open the UCM for a card when the device has the property set. Use the
same logic for loading the UCM as the acp code.
See #1251
UCM devices can require local data from use_case_mgr_open() but since
we do that in a separate process, make sure we reopen the use case
manager in case we are passed a UCM device so that the config is
available.
See #1251
When we start freewheeling, pause the device and resume when we
finish freewheel.
In freewheel mode, just discard samples in the sink and produce
silence in the source.
The start-delay adds extra silence to the buffer before starting the
playback. The idea is to have more time to adapt to the device
startup and set the timer more accurately.
See #983, #431
Make info parsing a bit easier to read by assigning the key and
value to temporary variables.
Improve the parsing of channelmap using json parser to make it
support more cases.
Add a unit test for channelmap parsing options.
Remove some magic constants that are not needed anymore with the
headroom.
Clamp the error to some reasonable value so that we don't adjust the
rate too much but still apply all of the correction calculated by the
dll.
Remove the bandwidth adjustment.
Also update the matching and resample fields when we reassign the
node to a new driver. This could cause the new follower to not activate
the adaptive resampler and get out of sync.
Use these commands to mark the begin and end of a series of Param
enumerations and configuration, like when doing format negotiation. The
idea is that the device can remain open while we do this.
Use this in adapter when negotiating a format.
We only set the OUT flag when we put the buffer on an io area and
might need to recycle later.
Before placing the output buffer into the io area, recycle any
buffer that might be left in there.
Only emit the ready callback when we have some data queued.
Add a clock name to the clock, remove the old api/clock_id. This makes
it easier to add descriptive names
Place the alsa card number in the clock name.
Check the clock name of the master clock and if it matches our own
clock, disable rate matching.
