PipeWire 0.3.60 (2022-11-10)

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

Highlights

• The filter-chain now handles errors better and has fixes for many crasher bugs.
• A new RTP module was added with a sender and receiver. It uses SAP to announce and consume RTP streams and is compatible with the PulseAudio RTP modules.
• Many small bluetooth improvements and fixes.
• The alsa plugin will now only start playback when there is data. This results in better sync and lower latency between capture and playback.
• The v4l2 and libcamera plugins have seen a lot of improvements. They support control properties now. Also pw-v4l2 has seen many improvements and mostly passes the v4l2-compliance test now.
• Many more bugfixes and improvements.

PipeWire

• Code cleanups, compiler warning fixes.
• Add some extra checks to avoid scheduling an inactive node.
• Rework the sequence of events to start and stop nodes.
• Improve param enumeration.
• An option was added to give priority to the Buffer params of the consumer. This makes it possible to use the default values of the consumer (instead of the producer) when capturing from a source.
• The graph rate selection was improved to pick a rate closest to the requested one (instead of picking the default).

Modules

• Fix some crashes in filter-chain. (#2737)
• X11 Bell module will now be loaded by default when available.
• A new RTP module was added with a sender and receiver. It uses SAP to announce and consume RTP streams and is compatible with the PulseAudio RTP modules.
• Improve RAOP compatibility.
• The echo-cancel module now uses the resampler prefill option to align input and output samples without buffering. Better latency control when starting and stopping has been implemented.
• The pulse tunnel will now write aligned samples to pulseaudio even when the ringbuffer wraps around. This fixes playback issues with multichannel sinks.
• Add a delay option to module-loopback using a ringbuffer.
• Implement echo-cancel params.
• The filter-chain module has better error reporting.
• The LADSPA search path was extended with some more common paths.
• The echo-canceler input can now also be a monitor of a sink. This improves compatibility with some proton games that expect a real sink instead of a virtual one.

Tools

• Better error reporting in pw-link.
• pw-top now also shows IEC958 passthrough formats and JPEG/H264 video formats.
• pw-top refreshes the screen faster.
• pw-top now prints the state of the node and shows less info for inactive nodes.
• pw-dump now uses the new seq field in the spa_param_info to discard old param updates and avoid duplicate params in the output.

Bluetooth

• Add ModemManager support in the native backend.
• Clean up GetManagedObjects handling.
• Handle QoS from the endpoints in the codec.
• Increase the socket buffer to have more control over the rate and QoS.
• Simplify the packet flushing code.
• Stop processing nodes before destroying them.
• Fix timers when a source switches drivers.
• Codecs can now share endpoints. This reduces the amount of endpoints and avoids problems with devices that can't handle a large amount of codec endpoints.
• Report batery status to UPower for HFP AG.
• Fix bitpool increase.

• The audioresampler now avoids clicks and pops between activating and deactivating the adaptive resampler when used by the stream API.
• Use default locale to parse float parameters.
• The upmix functions now have SSE optimizations.
• Avoid recalculating the complete channelmix setup when only the volume changes.
• The alsa plugin will now only start playback when there is data. This results in better sync and lower latency between capture and playback.
• The ALSA MIDI sequencer will now pull data from the graph even when it did not output anything. Fixes some graph stalls with the sequencer in some cases. (#2775)
• v4l2 and libcamera sources now recycle buffers when nothing is consuming them. This avoids stalling the graph.
• libcamera now suggests a more appropriate frame size than the smallest poster frame.
• Improve state changes in audioconvert. (#2764)
• A new seq field was added to spa_param_info to keep track of pending param updates.
• Support speaker output only on RealTek ALC4080. (#2744)
• The v4l2 source now supports setting controls.
• The libcamera plugin now supports enumerating and setting controls.
• A new unit test for 6.1 channel mapping was added. (#2809) More debug info was added to audioconvert for the channel matrix.
• Audioconvert will now also upmix a rear-center channel when needed.

pulse-server

• Add support for the RTP send and recv modules with the new native RTP module.
• Add option to set latency for pulse-tunnel streams and module-zeroconf-discover.
• The socket will now be given the same permissions as what pulseaudio did (0777).
• Implement module-loopback latency_msec correctly with the new delay parameter.
• sysfs.path is now filled with the same data as pulseaudio.
• The manager now uses the new seq field in the spa_param_info.
• Fix a bug where in some cases the read pointer would get out of sync and cause too large requests. (#2799)

• The alsa plugin now reuses the stream in prepare which results in better performance.
• Some deadlocks have been fixed in the ALSA plugin.
• The ALSA plugin reports more accurate timing information in some cases.

• The v4l2 compatibility layer has received a lot of updates.
• Improved node names and format enumeration.
• Support for multiple /dev/videoX devices, each mapped to a unique PipeWire node.
• Passes the v4l2-compliance test now with both the v4l2 and libcamera backend in PipeWire.
• Improved mmap support for inline buffer memory. This makes it possible to consume PipeWire streams.
• Negotiation works more reliably now.

• Implement jack_acquire_real_time_scheduling() and jack_drop_real_time_scheduling() by keeping the thread utils in a global state.
• Fix jack_client_thread_id() to return NULL when the client is not active, just like jack1 and jack2.
• An option was added to let the jack_set_buffer_size() function update the global metadata. A quirk was added so that jack_bufsize uses this new feature to make the buffer size settings persistent and global, just like jack.
• jack_port_register() and jack_port_unregister() can be called on an active client so make this thread safe. (#2652)

DISTROS:

• To make telegram work again: b720da77
• To avoid crashes when switching profiles: bf3516ba

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