pipewire-0.3.66

[Bruce Dubbs]

New point version.

[Bruce Dubbs]

# PipeWire 0.3.66 (2023-02-16)

This is a bugfix release that is API and ABI compatible with previous 0.3.x releases.

## Highlights

• Fix a regression in the pulseaudio module-combine-stream because the new module-combine-stream was not installed.
• PipeWire can now generate a limits.d config file with our recommended settings for priorities and memlock.

## PipeWire

• Avoid rate switches when the graph is idle.
• The rate selection algorithm was improved. This ensures minimal performance and quality loss when resampling.
• The default min.quantum was set to 32 again after it got erronously changed to (the too low) 16 in version 0.3.45.
• Fix compilation issues with rust bindings because of macros in defines. Work around it for now.
• Invalid file mappings are now refused
• Modules, exec and objects can now be loaded depending on conditions. One example is the X11-bell module that can now be disabled with a custom property override.
• Filter now also supports _trigger_process() to drive the graph.
• TID is now added to the journald log.
• PipeWire generates and installs */etc/security/limits.d/25-pw-rlimits.conf* that by default contains project's recommended settings. Creation of the pipewire group is left to the distro or user ( groupadd -r pipewire ). See the rlimits-* Meson options for controlling this behavior.
• Additionally there is now by default disabled Meson option that will install */etc/security/limits.d/20-pw-defaults.conf* with the current Linux default memlock value. Distros with only kernels >=5.16 or always using systemd v251 or newer do not need this. But all other builds should set the -Dpam-defaults-install=true Meson option to ensure that the memlock value is always large enough. Thanks to Rickie Schroeder for pointing out that the default Linux memlock value has been somewhat recently increased.

## modules

• Install module-combine-stream.
• RTP source now has support for custom channel names.
• RTP source will now stop when inactive.
• There is now
• Filter-chain has a new mysofa based spacializer plugin.
• The RTP modules can now use direct clock timestamps to send and receive packets. This makes it possible to synchronize sender and receiver with a PTP clock, for example.
• Filter-chain now has an invert plugin to invert the polarity of a signal.

## modules

• Install module-combine-stream.
• RTP source now has support for custom channel names.
• RTP source will now stop when inactive.
• There is now
• Filter-chain has a new mysofa based spacializer plugin.
• The RTP modules can now use direct clock timestamps to send and receive packets. This makes it possible to synchronize sender and receiver with a PTP clock, for example.
• Filter-chain now has an invert plugin to invert the polarity of a signal.

## SPA

• There is now an option to set the channels used for probing Pro Audio devices. This could unlock more samplerates for some devices when they are probed with fewer channels.
• Support was added for other clocks than the MONOTONIC clock in the driver nodes. This can be used to synchronize the graph to a PTP clock, for example.
• The ALSA source has some more headroom when rate matching to avoid stuttering when following another driver.
• libcamera controls are now mapped to standard PipeWire property values.
• The channelmixer has seen some improvements. MONO and undefined channel layouts are now upmixed and downmixed more correctly.

## Bluetooth

• Many BAP support fixes.

## GStreamer

• The gstreamer elements now support buffer video metadata so that strides are correctly handled.
• pipewiresrc will now error out correctly in more cases.

## JACK

• The frame to/from time functions are improved to also work with negative time and frame offsets.

[Bruce Dubbs]

Fixed at commit 2df0265da009afdddafda61f96a236e83f3d47c7