# PipeWire 1.6.6 (2026-05-26)

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

## Highlights
  - Fix a bug in the server code that could leave snap clients without
    sound. (#5270)
  - Relax LADSPA path loading again, absolute paths are only blocked in
    unsafe cases.
  - Fix a volume restore issue in filter-graph when using custom volume
    controls.
  - Small fixes and improvements.


## PipeWire
  - Fix the meta permission check on metadata.
  - Make sure we don't accept too many fds.
  - Fix potential race with buffer allocation and Suspend. (#3547)

## SPA
  - Relax LADSPA path loading. Absolute paths are allowed when loading
    modules from a config file. They are now only blocked when loading
    the pulse ladspa modules and filter-chains in nodes because those
    can load ladspa plugins in other processes. (#5222)
  - Fix a regression in the dither noise that was silent when no input
    was available. (#5260)
  - Fix volume initialization in filter-graph. (#5192)

## Pulse-server
  - Fix a bug in the server code that could leave snap clients without
    sound. (#5270)
  - Be more careful with the stream suspend messages and only send them
    when the stream is monitoring. (#5273)
  - Fix monitor mode in pavucontrol.

## Tools
  - Fix midifile SysEx writing in pw-cat and ensure the header is written
    correctly on close.
  - Make sure pw-cat does not try to convert Midi to UMP.

Older versions:

# PipeWire 1.6.5 (2026-05-13)

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

## Highlights
  - Fix muted output in some cases.
  - Removed the pipe filter in filter-graph.
  - More fixes and improvements.


## PipeWire
  - Fix an issue in pw-filter where it could end up in a loop where buffers
    are stuck on a port and the port becomes silent. (#5249)

## Modules
  - Improve ROC receiver start/stop, fixes memory leaks. (#5250)
  - Remove the pipe filter from filter-graph, it's broken by design and a
    security nightmare.
  - Fix the midi buffer size in jack-tunnel.

## SPA
  - Rate limit out-of-buffers errors. (#5249)
  - Partially revert the line-out mute patch, it seems to break things and leave
    audio muted when plugging-unplugging jacks.  (#5246)
  - Improve renegotiation in audioconvert when the graph rate changes and the
    resampler was disabled. (#4933).
  - Fix potential crash in alsa when logging.

## Pulse-server
  - A whole bunch of extra security checks and hardening fixes.

# PipeWire 1.6.4 (2026-04-22)

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

## Highlights
  - Small improvements and seqfault fixes.
  - Try to not emit ports that JACK doesn't understand. Fixes glitches in
    ardour and other JACK apps.


## PipeWire
  - Refuse to load plugins and crash when pw_init() was not called. (!2784)

## SPA
  - Fix LADSPA plugin loading, support LADSPA_PATH ending with /
  - Fix segfault in alsa-seq when removing devices in some cases. (#5221)
  - Allow negative gain in mixer. (#5228)
  - Improve alsa-seq port names, add : between client and port. (#5229)
  - ACP: don’t override user-selected port on availability changes.

## Bluetooth
  - Backport some important fixes and minor improvements.

## JACK
  - Ignore non DSP ports to avoid emitting extra callbacks.

## GStreamer
  - Fix crop metadata.

## Tools
  - Fix WAVEX saving in pw-cat. (#5233)

# PipeWire 1.6.3 (2026-04-09)

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

## Highlights
  - Fix some RAOP compatibility regressions.
  - Fix segfault in the mixer in some cases.
  - Most nodes now produce and consume MIDI1 again and avoid
    conversions to and from UMP.
  - Various small fixes and improvements.


## PipeWire
  - Fix regression with sample rate changes. (#5207)
  - Fix a potential integer overflow in the memory mapping.

## Modules
  - Align RTP timestamps to make RAOP work on more devices. (#5167)
  - Avoid crashes in RTP streams because of concurrent event
    emmission.
  - Avoid invalid fd usage in native-protocol with special crafted
    messages.
  - Fix properties and params enumeration in filter-chain (#5202).

## SPA
  - Fix compilation with -Werror=discarded-qualifiers
  - Avoid OOB read in mix matrix. (#5176)
  - Avoid loading plugins from absolute paths that are not in the
    search path.
  - Avoid MIDI conversions to and from UMP. (#5183)

## Bluetooth
  - Backport some fixes and avoid some crashes.

## JACK
  - Make sure timebase callback is never called with 0 frames.
  - Increase the notify queue to avoid losing notifications.

# PipeWire 1.6.2 (2026-03-16)

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

## Highlights
  - Fix a potential crash when the wrong memory was freed.
  - Fix a optimization with shared memory over some links that could
    cause errors later on.
  - Fix SOFA filter and default control input in LADSPA and LV2.
  - Some other small fixes and improvements.


## PipeWire
  - Remove an optimization to skip share mem in links, it causes problems
    later on. (#5159)

## Modules
  - Don't try to free invalid memory or close invalid fds when the client
    aborted before allocating buffer memory. (#5162)

## SPA
  - support ACP_IGNORE_DB in udev.
  - Use 0x as a prefix for hex values.
  - Mark Props as write-only in libcamera.
  - Small optimization in the audio mixer.
  - Fix initialization of control properties for SOFA and biquads in the
    filter-graph. (#5152)
  - Fix min/max default values for LADSPA and LV2.

## JACK
  - Fix jack_port_type_id(). Return values that are compatible with JACK1/2.

# PipeWire 1.6.1 (2026-03-09)

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

## Highlights
  - Fix socket activation, which could cause a failure to start PipeWire in
    some setups.
  - Fix crashes in many JACK apps when nodes/ports are quickly added/removed
    such as when there are notifications (like when changing the volume in
    KDE).
  - Fix playback of encoded formats in pw-cat again.
  - Some other smaller fixes and improvements.

## Modules
  - Fix socket activation. (#5140)
  - Remove node.link-group from driver nodes.

## SPA
  - Fix the libcamera stop sequence.

## JACK
  - Never return NULL from jack_port_by_id(). (#3512)

## GStreamer
  - Improve the timestamps on buffers.

## Tools
  - Fix playback of encoded formats. (#5155)

# PipeWire 1.6.0 (2026-02-19)

This is the 1.6 release that is API and ABI compatible with previous
1.4.x releases.

This release contains some of the bigger changes that happened since
the 1.4 release last year, including:

  * An LDAC decoder was added for bluetooth.
  * SpanDSP for bluetooth packet loss concealment.
  * Safe parsing and building of PODs in shared memory.
  * Added support for metadata features. This is used to signal that
    the sync_timeline metadata supports the RELEASE operation.
  * Node commands and events can contain extra user data.
  * Support for more compressed format helper functions to create
    and parse formats.
  * Support for compile time max channels. The max channels was
    increased to 128.
  * Support for audio channel layouts was added. This makes it possible
    to set "audio.layout" = "5.1" instead of the more verbose
    audio.position = [ FL, FR, FC, LFE, SL, SR ]
  * Support for Capability Params was added. This can be used to
    negotiate capabilities on a link before format and buffer
    negotiation takes place.
  * More HDR colortypes are added.
  * Loops now have locking with priority inversion. Most code was adapted
    to use the faster locks instead of epoll/eventfd to update shared state.
  * Channel position are parsed from EDID data.
  * Channel maps are now set on ALSA.
  * The resampler now supports configurable window functions such
    as blackman and kaiser windows. The phases are now also calculated
    with fixed point math, which makes it more accurate.
  * Many bluetooth updates and improvements.
  * The filter-graph has an ffmpeg and ONNX plugin. The ffmpeg plugin
    can run an audio AVFilterGraph. The ONNX plugin can run some models
    such as the silero VAD.
  * Many AVB updates. Work is ongoing to merge the Milan protocol.
  * Support for v0 clients was removed.
  * The jack-tunnel module can now autoconnect ports.
  * ROC support multitrack layouts now.
  * Many RTP updates.
  * rlimits can now be set in the config file.
  * Thread reset on fork can now be configured. JACK clients expect this
    to be disabled.
  * node.exclusive is now enforced.
  * node.reliable enables reliable transport.
  * pw-cat supports sysex and midiclip as well as some more uncompressed
    formats. Options were added to set the container and codec formats
    as well as list the supported containers, codecs, layouts and channel
    names.
  * Documentation updates.


## Highlights (since the previous 1.5.85 prerelease)
  - Fix a 64 channel limit in the channel mixer.
  - Fix an fd leak in pulse-server in some error cases.
  - Some small fixes and improvements.


## PipeWire
  - Fix Capability leaks.
  - Return an error in pw-stream get-time when not STREAMING.
  - Set the current time in the driver position before starting.
    Some followers might look at it.

## Modules
  - Improve default channel handling in module-filter-chain.
  - Support source and sink only module-filter-chain.
  - Tweak the filter-chain spatializer example gains.
  - Handle new snapcast service type. (#5104)
  - Implement socket activation without depending on libsystemd.
  - Support ipv4 link-local addresses in RAOP and snapcast. (#4830)
  - Forward ROC-toolkit logs to pipewire.

## SPA
  - Improve default channel handling in filter-graph. (#5084)
  - Clamp control values to min/max. (#5088)
  - Support mode JBL gaming headsets.
  - Handle some SOFA errors and add gain option.
  - Really handle more than 64 channels in the channelmixer. (#5118)
  - Allow removal in ALSA-udev of ignored cards.

# pulse-server
  - Fix mono mixdown query.
  - Expose headset autoswitch message.
  - Handle EPROTO errors by disconnecting.
  - Handle timeouts in play-sample streams. (#5099)

## GStreamer
  - Fix crop metadata.
  - Fix a race in the buffer release function.

## Tools
  - Improve format support and detection in pw-cat.
  - Add some more options to pw-cat to list supported containers
    and formats. (#5117)

# PipeWire 1.5.85 (2026-01-19)

This is the fifth and hopefully last 1.6 release candidate that
is API and ABI compatible with previous 1.4.x, 1.2.x and 1.0.x
releases.

## Highlights
  - Fix errors in older clients that blindly mmap buffer data.
  - ALSA channel mapping should work in more cases.
  - Fix an overflow in the resampler with some sample rates.
  - Device ID negotiation for DMABUF was added.
  - The channelmixer can now also downmix most REAR and TOP
    channel positions.
  - Various small fixes and improvements.


## PipeWire
  - Avoid doing flushing invoke in pw-stream. (#5010)
  - Fix stream time delay calculations in some cases. (#4957)
  - Avoid suspending a node when the ports are busy.

## Modules
  - Mode AVB module updates.
  - Remove MAPPABLE flag from memptr data in client-node. This avoids
    errors in older clients that blindly map buffers. (#5003)
  - Don't leak the filter-chain module in module-parametric-equalizer.
    (#5045)
  - make it possible to run pulse tunnel sink and source with the same
    name. (#5079)

## SPA
  - The delay filter in filter-graph now has feedback and feedforward
    options to make it possible to implement comb and allpass filters.
  - The resampler can be compiled with a custom default quality.
  - Firewire latency is scaled correctly now. (#4977)
  - The mixer will only passthrough dynamic data.
  - Fix filter-graph state in audioconvert after flush.
  - Set the channel map in ALSA nodes to tell ALSA our channel layout
    and avoid wrong channels.
  - Fix AVX2 function, make sure they don't run on AVX-only CPUs.
    (#5072)
  - Fix an overflow and crash when too many phases are used in the
    resampler. (#5073)
  - Add some more channel downmix positions, mostly REAR and TOP
    channels.

## pulse-server
  - Add a message to enable mono mixdown.

## Tools
  - Support filenames in raw mode in pw-cat. (#5012)
  - Enable clipping in spa-resample.

## examples
  - Update device ID negotiation examples.

## Docs
  - Document the resampler properties better.

# PipeWire 1.5.84 (2025-11-27)

This is the fourth 1.6 release candidate that is API and ABI
compatible with previous 1.4.x, 1.2.x and 1.0.x releases.

Changes since the last pre-release:

## Highlights
  - Capabilities wer added to improve negotiation over links.
  - The audio resampler now has a configurable window function to better
    tune the resampler quality. A kaiser and blackman window was added
    and the default parameters were tuned.
  - Various small fixes and improvements.

## PipeWire
  - Capabilities and PeerCapabilities were added to exchange key/value
    pairs between consumer and producer right after a link is made. This
    can be used to detect how the negotiation of formats and buffers
    should be done.

## Modules
  - Avoid segfaults in RTP source. (#4970) 
  - The AVB module has seen some improvements.

## Pulse-server
  - @NONE@ can now be used to clear the default sink/source.

## SPA
  - Support longer convolver filenames and also support inline
    IRs.
  - The audio resampler window function is now selectable and
    configurable. A kaiser window and blackman window was added
    and the default qualities were tweaked to improve quality.
  - The filter-graph convolver latency is now set by default to
    something more sensible. (0 by default and N/2 for hilbert).
    (#4980)

## Bluetooth
  - Better xrun and error handling for iso streams.
  - The +CNUM reply was fixed.
  - The CIEC call status was fixed. (#1744)
  - Add BAP context metadata to improve compatibility.
  - Improve compatiblity with Creative Zen Hybrid Pro by releasing
    transports simultaneously.

# PipeWire 1.5.83 (2025-11-06)

This is the third 1.6 release candidate that is API and ABI
compatible with previous 1.4.x, 1.2.x and 1.0.x releases.

Changes since the last pre-release:

## Highlights
  - Include the NEWS and updated version number.

# PipeWire 1.5.82 (2025-11-06)

This is the second 1.6 release candidate that is API and ABI
compatible with previous 1.4.x, 1.2.x and 1.0.x releases.

Changes since the last pre-release:

## Highlights
  - The max channel limit is now a compile time option.
  - The SAP and RTP module have seen some robustness improvements.
  - Add audio.layout propperty.
  - Cleanups to the code here and there.

## PipeWire
  - Handle Tags more like Latency with a NULL param when no ports are linked
    and some sort of (empty) Tag when the ports are linked.

## Modules
  - Improve the echo-cancel module to keep the streams more aligned
    and cause less latency.
  - Improve format parsing errors in most modules.
  - The RTP module now has extra code for better network robustness, including
    cases when network interfaces are not yet up and running, and multicast
    sockets are silently kicked out of IGMP groups.
  - The direct timestamp mode in the RTP module was effectively broken and is
    now fixed.
  - Add support for audio.layout.
  - Add multichannel support to ROC.

## SPA
  - Rework the maximum number of channel handling. Because this is a
    potential ABI break, it is now a compile time option with new
    functions to handle more than the previous 64 channels.
  - The 64 channel limit was removed from the noise shaper.
  - spa_strbuf is used in more places instead of custom snprintf code.
  - The volume ramp code was simplified.
  - The driver node now has properties to configure the clock.
  - The adapter will try to renegotiate when the driver changes.
  - Fix relaxed array parsing with od number of elements. (#4944)
  - audio.layout was added to set the channel positions to some
    predefined layouts.
  - Added more POD choice checks to ensure the right amount of values
    are present in the choice.
  - Fix __has_attribute usage. (#4962)
  - Thread RESET_ON_FORK is now disabled for JACK application so that
    forking will preserve any real-time thread priorities, like JACK.
    (#4966)
  - Fix some compilation issues. (#4960 and #4961).

## Pulse-server
  - Fix missing subscription events on device port changes.
  - Increase min.quantum to 256/48000. (#4875)

## GStreamer
  - Avoid overflow in clock time calculations.
  - Fix renegotiation.

## Docs
  - Swap the name and id of device.product

# PipeWire 1.5.81 (2025-10-16)

This is the first 1.6 release candidate that is API and ABI
compatible with previous 1.4.x, 1.2.x and 1.0.x releases.

In addition to all the changes backported to 1.4.x, this release
also contains some new features:

## Highlights
  - The link negotiation code was refactored and improved.
    Applications now have more options for selecting the default
    values and restricting the available options. The default
    negotiation code will now attempt to better match the application
    suggested values.
  - The loop now has support for locking with priority inversion. Most
    of the code was updated to use the locks instead of invoke to
    get proper concurrent updates with the loop. The Thread loop
    functionality of locks, signal and wait was moved to the SPA loop.
    This guarantees better real-time behaviour because inter-thread
    synchronization does not have to pass eventfd/epoll.
  - The control stream parser was rewritten to be safe against concurrent
    updates while parsing, which can occur when parsing shared memory.
    It also has extra checks to avoid integer overflows and undefined
    behaviour.
  - MIDI 2.0 clip support was added to the tools.
  - Bluetooth ASHA (Audio Streaming for Hearing Aid) support was added.
  - The ALSA node setup was tweaked to provide low latency with the ALSA
    Firewire driver.
  - Better support for explicit sync. It is now possible to negotiate
    extra features to know if a consumer will signal the sync objects and
    implement a fallback using a reliable transport.
  - Many bug fixes and improvements.


## PipeWire
  - Avoid process calls in disconnect in pw-stream. (#3314)
  - Disable PipeWire services for root.
  - The link negotiation was refactored and improved. Drivers now
    always have a lower priority in deciding the final format.
  - Backwards compatibility with the v0 protocol was removed.
  - pw-stream and pw-filter will now refuse to queue a buffer that
    was not dequeued before.
  - Object properties will now be updated on the global as well.
  - The priority of config overrides is correct now. (#4816)
  - Async links now correctly report 1 extra quantum of latency.
  - node.exclusive and the new port.exclusive flag are now enforced
    by PipeWire itself.
  - A new timer-queue helper was added to schedule timeouts.
  - node.terminal and node.physical properties are now copied to the
    ports to make it possible to create virtual sources and sinks
    for JACK applications.
  - Port properties will now be dynamically updated when the node
    properties they depend on are updated.
  - Passive leaf nodes are now handled better. Now they will also
    run when the peer is active. (#4915)
  - Reliable transport has been added for output ports. This can be
    used in some cases if the producer wants to ensure buffers are
    consumed by a consumer. (#4885)
  - Context properties now support rlimit.<resource> properties to
    configure rlimits. (#4047)

## Modules
  - Close SyncObj fds.
  - module-combine-stream has better Latency reporting.
  - The JACK tunnel can now optionally connect ports.
  - module-loopback has better Latency reporting.
  - A Dolby Surround and Dolby Pro Logic II example filter config 
    was added.
  - Filter-chain can now resample to a specific rate before running the
    filters. This is useful when the filter-graph needs to run at a
    specific rate.
  - Avahi-poll now uses the timer-queue to schedule timeouts.
  - Modules are ported to timer-queue instead of using timerfd directly
    for non-realtime timers.

## SPA
  - The loop now has support for locking with priority inversion. Most
    of the code was updated to use the locks instead of invoke to
    get proper concurrent updates with the loop. The Thread loop
    functionality of locks, signal and wait was moved to the SPA loop.
  - UMP to Midi 1.0 conversion was improved, some UMP events are now
    converted to multiple Midi 1.0 messages. (#4839)
  - The POD filter was refactored and improved. It is now possible to
    use the default value of the output by specifying an invalid input
    default value.
  - The POD parser was made safe for concurrent updates of the memory
    it is parsing. This is important when the POD is in shared memory
    and the parser should not access invalid memory.
  - Some hardcoded channel limits were removed and now use the global
    channel limit. More things can dynamically adapt to this global
    limit. The max number of channels was then bumped to 128.
  - The POD builder is safe to use on shared memory now and tries to
    avoid many integer overflows.
  - Most debug functions are safe to be used on shared memory.
  - User specified Commands and Events are now possible.
  - The SPA_IO_CLOCK_FLAG_DISCONT was added to spa_io_clock to signal
    a discont in the clock due to clock change.
  - AC3, DTS, EAC3, TRUEHD and MPEGH now have helper parser functions.
  - H265 was added as a video format. (#4674)
  - SPA_PARAM_PeerFormats was added to let a port know about its peer
    formats in order to better filter possible conversions.
  - More color matrices, transfer functions and color primaries.
  - The echo-canceler is enabled now.
  - Pro-Audio mode now uses 3 periods by default. This lowers the
    latency on some drivers (Firewire). The latency of Firewire is
    also reported correctly now.
  - The ALSA DLL bandwidth is configurable now.
  - The resampler now uses fixed point for the phases and is a little
    faster when updating adaptive rates.
  - The convolver is a little faster by swapping buffers instead of
    copying samples.
  - Latency and ProcessLatency support was added to filter-graph.
    (#4678)
  - Audio channel position support was added to filter-graph.
  - A new ffmpeg avfilter plugin was added to filter-graph.
  - A new ONNX filter was added to filter-graph.
  - A debug, pipe, zeroramp and noisegate filter was added to the
    filter-graph. (#4745)
  - The filter-graph lv2 plugin now supports options and state.
  - videoconvert was greatly improved.
  - The v4l2 plugin can negotiate DMABUF with modifiers.
  - Colorimetry information was added to v4l2 and libcamera.
  - Audioconvert can handle empty buffers more efficiently.
  - Improve the POD compare functions for Rectangle.
  - There is now a SPA_POD_PROP_FLAG_DROP flag to drop the property when
    the property is missing from one side.
  - A new FEATURE choice was added that is basically a flags choice with
    a FLAG_DROP property.
  - Metadata features were added. This is a way to negotiate new features
    for the metadata. (#4885)
  - DSD playback with pw-cat has been improved.
  - Compatibility and xrun prevention for the SOF driver has been
    improved. (#4489)
  - The filter-graph max plugin can now have 8 input channels.
  - Buffer Negotiation between the mixer port and the node ports is much
    improved. (#4918)
  - An offline AEC benchmark was added.
  - Channel positions are now read from HDMI ELD when possible.
  - Audioconvert and filter-graph now also support properties of Long
    and String types.

## ACP
  - It's possible to disable the pro-audio profile.
  - Support for Logitech Z407 PC Speakers was improved.
  - Support for Razer BlackShark v3.
  - Fix volume rounding down causing mute. (#4890)

## Tools
  - pw-cat can now play and record MIDI 2.0 Clips, which is the
    official format for storing MIDI 2.0 UMP data. pw-midi2play
    and pw-midi2record were added as aliases.
  - pw-cat can now upload sysex files. The pw-sysex alias was
    added for this.
  - The pw-link tool now has a -t option to list port latencies.
    It also has better monitor support.
  - pw-top can now clear the ERR column with the c key.
  - pw-cli now keeps the types of the variables it stores and avoid
    using wrongly typed variables that can crash things. It can now
    also list the available variables.
  - pw-dump can now output raw JSON and SPA JSON.
  - pw-dump has configurable indentation level.
  - pw-mididump can be forced to output MIDI 1.0 messages.
  - pw-profiler now uses doubles for extra precision.
  - pw-top now marks the async nodes with =.

## Bluetooth
  - Telephony improvements.
  - ASHA support was added.
  - Packet loss concealment was added.
  - Improved synchronisation between LE Audio streams in the same group.
  - Improved LE Audio device compatibility.
  - LC3-24kHz voice codec was added (used by Airpods)
  - LDAC decoding support added (requires separate decoder library)

## Pulse-server
  - The SUSPEND event is now correctly generated. fail-on-suspend is
    now implemented.
  - PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND is now implemented. (#4255)
    (#4726)
  - RTP streams now have stream.properties for extra configuration.
  - Timed out streams are now destroyed instead of lingering. (#4901)
  - A new help and pipewire-pulse:list-modules core message was added.

## JACK
  - Port rename callbacks are now emitted correctly.
  - Use safe POD parsing for the control sequences.

## V4l2
  - The wrapper now avoids a race while initializing PipeWire. (#4859)

## GStreamer
  - Colorimetry support was added.
  - Cursor metadata is now exposed as ROI metadata.
  - Many more updates.

## Docs
  - Document the client-node flow a bit more.

# PipeWire 1.4.0 (2025-03-06)

This is the 1.4 release that is API and ABI compatible with previous
1.2.x and 1.0.x releases.

This release contains some of the bigger changes that happened since
the 1.2 release last year, including:

  * client-rt.conf was removed, all clients now use client.conf and
    are given RT priority in the data threads.
  * UMP (aka MIDI2) support was added and is now the default format
    to carry MIDI1 and MIDI2 around in PipeWire. There are helper
    functions to convert between legacy MIDI and UMP.
  * The resampler can now precompute (at compile time) some common
    conversion filters. Delay reporting in the resampler was fixed and
    improved.
  * Bluetooth support for BAP broadcast links and support for hearing aids
    using ASHA was added. A new G722 codec was also added.
    Delay reporting and configuration in Bluetooth was improved.
  * The ALSA plugin now supports DSD playback when explicitly allowed
    with the alsa.formats property.
  * A PipeWire JACK control API was added.
  * A system service was added for pipewire-pulse.
  * Many documentation and translation updates.
  * Many of the SPA macros are converted to inline functions.  All SPA
    inline functions are now also compiled into a libspa.so library to
    make it easier to access them from bindings.
  * The module-filter-chain graph code was moved to a separate
    filter-graph SPA plugin so that it becomes usable in more places.
    EBUR128, param_eq and dcblock plugins were added to filter-graph.
    The filter graph can now also use fftw for doing convolutions.
    The audioconvert plugin was optimized and support was added to
    audioconvert to insert extra filter-graphs in the processing pipeline.
  * New helper functions were added to parse JSON format descriptions.
  * The profiler now also includes the clock of the followers.
  * RISCV CPU support and assembler optimisations were added.
  * The clock used for logging timestamps can be configured now.
  * The JSON parser was split into core functions and helper.
  * Support for UCM split PCMs was added. Instead of alsa-lib splitting
    up PCMs, PipeWire can mark the PCMs with the correct metadata so that
    the session manager can use native PipeWire features to do this.
  * Support for webrtc2 was added to echo-cancel.
  * IEC958 codecs are now detected from the HDMI ELD data.
  * Conversion between floating point and 32 bits now preserve 25 bits of
    precision instead of 24 bits.
  * A new Telephony D-BUS API compatible with ofono was added.
  * The invoke queues are now more efficient and can be called from multiple
    threads concurrently.
  * Clock information in v4l2 was improved.
  * An ffmpeg based videoconvert plugin was added that can be used with the
    videoadapter.
  * The GStreamer elements have improved buffer pool handling and rate
    matching.
  * The combine-stream module can now also mix streams.
  * link-factory now checks that the port and node belong together.
  * The netjack-manager module has support for autoconnecting streams.
  * The native-protocol has support for abstract sockets.
  * The pulse server has support for blocking playback and capture in
    pulse.rules.
  * The corked state of stream is now reported correctly in pulse-server.
  * Fix backwards jumps in pulse-server.
  * Latency configuration support was added in loopback and raop-sink.
  * The ROC module has more configuration options.
  * The SAP module now only send updated SDP when something changed.
  * RTP source now has a standby mode where it idles when there is no
    data received.
  * Support for PTP clocking was added the RTP streams.
  * The VBAN receiver can now dynamically create streams when they are
    detected.
  * Error reporting when making links was improved.
  * Support for returning (canceling) a dequeued buffer in pw-stream.
  * Support for emiting events in pw-stream was added.
  * pw-cat now support stdin and stdout.


## Highlights (since the previous 1.3.83 release)
  - Small fixes and improvements.

## PipeWire
  - Fix some missing includes in metadata.h
  - Pass the current error in errno when a stream is in error (#4574)


## modules
  - Evaluate node rules before loading adapter follower to ensure
    properties are set correctly. (#4562)

## SPA
  - Avoid a use after free when building PODs. (#4445)
  - Take headroom into account when calculating resync.

## Bluetooth
  - Fix +CLCC parsing.

## GStreamer
  - Notify about default device changes in deviceprovider.
  - Copy frames between pools and avoid splitting video buffers.

## JACK
  - Add an option to disable the MIDI2 port flags. (#4584)

# PipeWire 1.3.83 (2025-02-20)

This is the third and hopefully last 1.4 release candidate that
is (almost) API and (entirely) ABI compatible with previous 1.2.x
and 1.0.x releases.

We note that in the 1.3.x series, the API is slighty not backwards
compatible because some methods previously used to accept void* as
a parameter while they now require the correct type. We think this
is however a good kind of API breakage and expect projects to patch
their code to get things compiled with newer version (which will also
compile for older versions). Note also that this is not an ABI break.


## Highlights
  - Handle JACK transport updates in a better way.
  - Fix a SAP regression when starting.
  - Fix regression in rate scaling.
  - Improve bluetooth source rate handling.
  - More small bugfixes and improvements.


## PipeWire
  - Handle JACK transport updates in a better way. (#4543)

## Modules
  - Check that the link factory port and nodes match. Deprecate the
    port.id when making links.
  - Improve profiler output by scaling the quantum with the node
    rate so that we don't end up with confusing information. (#4555)
  - Fix sending of the SAP SDP. Handle some SDP parsing errors.
  - Add some more options to the ROC source module. (#4516)

## SPA
  - Fix firewire quirks in udev rules. (#4528)
  - Fix a bug in the rate scaling in some cases that would make things
    run with the wrong samplerate.
  - Improve introspection of control types.

## Bluetooth
  - Use the G722 codec from Android instead of FFmpeg for ASHA.
  - Use the A2DP source rate as the graph rate. (#4555)
  - Specify the bluetooth source latency property in the rate of the
    stream to avoid conversions and rounding errors.

# PipeWire 1.3.82 (2025-02-06)

This is the second 1.4 release candidate that is API and ABI
compatible with previous 1.2.x and 1.0.x releases.

## Highlights
  - Various pw-stream improvements: timing information fixes,
    avoid locking buffers in some cases and an improved drain
    event.
  - A new Telephony D-BUS API compatible with ofono.
  - Documentation fixes and updates.
  - More small fixes and improvements.


## PipeWire
  - Improve timing information when rate is unknown.
  - Avoid locked buffers in pw_stream in some cases.
  - Improve pw_stream drain event emission.
  - Improve manager socket handling. Applications can avoid hardcoding
    the sockets so that they will respect the config settings.

## modules
  - Fix header size calculation when using ipv6. (#4524)

## SPA
  - Optimize byteswapped s16 conversions.
  - Improve event handling for internal events.
  - Optimize negiotiation when in convert mode, prefer the format
    of the follower in adapter.
  - Fix EnumPortConfig for videoadapter without converter.
  - Fix libcamera property buffer size.

## Pulse-server
  - Add systemwide systemd files.

## JACK
  - Add a UMP example.
  - Use the new JackPortMIDI2 flag to mark UMP ports to JACK.

## Bluetooth
  - Support BAP hardware volume.
  - Add a Telephony DBUS API.

## GStreamer
  - Disable buffer pools for audio by default.

## Docs
  - Improve the module documentation.

# PipeWire 1.3.81 (2025-01-23)

This is the first 1.4 release candidate that is API and ABI
compatible with previous 1.2.x and 1.0.x releases.

In addition to all the changes backported to 1.2.x, this release
also contains some new features:

## Highlights
  - UMP support was added with MIDI 1.0 and MIDI 2.0 support in the ALSA
    sequencer plugin. By default PipeWire will now use MIDI 2.0 in UMP
    messages to transport MIDI in the graph, with conversions to/from legacy
    MIDI where required. This requires UMP support in the kernel.
  - client-rt.conf is no longer supported. Custom changes made to this
    config should be moved to client.conf. Clients that try to load the
    client-rt.conf will emit a warning and be directed to client.conf
    automatically for backwards compatibility.
  - The module-filter-chain code was moved to a new filter-graph plugin. This
    made it possible to add filter-graph support directly in audioconvert. It
    is now possible to run up to 8 run-time swappable filter-graphs inside
    streams and nodes. This should make it easier to add effects to streams
    and device nodes.
  - Bluetooth support for BAP broadcast links and support for hearing aids
    using ASHA was added.
  - Many more bugfixes and improvements.

## PipeWire
  - Nodes are now only scheduled when ready to signal the driver.
  - Add slovenian translation. (#4156)
  - Link errors are handled better.
  - The videoadapter is now enabled by default but no videoconverter
    is loaded yet by default.
  - Streams now have support for ProcessLatency.
  - Streams now have a method to emit events.
  - The RequestProcess event and command can now pass around extra
    properties.
  - Local timestamps are now used for logging.
  - client-rt.conf is no longer supported. Custom changes made to this
    config should be moved to client.conf. Clients that try to load the
    client-rt.conf will emit a warning and be directed to cliert.conf
    automatically to preserve backwards compatibility.
  - pw_stream now has an API to return unused buffers.

## modules
  - module-combine-stream can now mix streams.
  - Links in error are now destroyed by link-factory.
  - The netjack2 driver can now also create streams that autoconnect when
    specified. (#4125)
  - Many updates and bugfixes to the RTP modules.
  - The netjack2 driver can now bind to a custom IP and port pair. (#4144)
  - The loopback module and module-raop have support for ProcessLatency, which
    can be used to query and update the latency.
  - The profiler module can now reduce the sampling rate.
  - The filter-chain was optimized some more.
  - The filter-chain gained some more plugins: param_eq, ebur128, dcblock.
  - Support for fftw based convolver was added.
  - Some module arguments can now be overridden.
  - The VBAN receiver now creates new streams per stream name. (#4400)
  - The RTP SAP module is now smarter with generating new SAP messages.
  - The RTP source can now be paused when no data is received. (#4456)

## tools
  - pw-cat can now stream most formats from stdin/stdout.
  - pw-profiler has a JSON dump option to dump the raw profiler data.
  - pw-cli now supports unload-module. (#4276)

## SPA
  - The resampler can precompute some common coeficients now at compile
    time.
  - UMP support was added with MIDI 1.0 and MIDI 2.0 support in the ALSA
    sequencer plugin. By default PipeWire will now use MIDI 2.0 in UMP
    messages to transport MIDI in the graph, with conversions to/from legacy
    MIDI where required.
  - Control types can now be negotiated.
  - Support for writing ALSA bind controls was added.
  - The ALSA sequencer now has better names for the ports.
  - The F32 to S32 conversion now uses 25 bits for an extra bit of
    precision.
  - libcamera controls can now be set in all cases.
  - The videoadapter has been improved and a dummy and ffmpeg based
    videoconverter plugin was added.
  - Negotiation was improved in audioadapter. First a passthrough format
    is tried.
  - Some JSON helper functions were added and some duplicate code removed
    or simplified.
  - Add support for RISC V CPU detection and add many optimizations in
    the audio converters.
  - Add an option to disable ALSA mixer path select. (#4311)
  - Fix a potential bug with the cleanup of the loop queues.
  - ALSA nodes now dynamically adjust the DLL bandwidth based on average
    measured variance.
  - The loop invoke queue was made more efficient and make it possible to
    invoke from multiple threads.
  - The filter-chain code was moved to a new filter-graph plugin.
  - Most function macros are now static inlined and can also be built into a
    libspa.so file. This should improve language bindings.
  - V4l2 clock information was improved.
  - Supported IEC958 codecs are now autodetected via ELD info.
  - Audioconvert was optimized some more.
  - Audioconvert can now include filter-graphs in its processing.
  - webrtc-audio-processing-2 is now supported in AEC.
  - The resampler now reports the delay and subsample delay. Also the
    delay is reported in the samplerate of the input.
  - The ALSA sequencer now handle kernels without UMP support. (#4507)

## Pulse-server
  - Add quirk to block clients from making record and playback streams.
  - The corked state is now set on stream to always report this state
    correctly to other clients.
  - Readiness notification was added to the pulse server with the
    PIPEWIRE_PULSE_NOTIFICATION_FD environment variable. (#4347)
  - The pulse.cmd config now supports conditions.
  - A bug in clearing the ringbuffer was fixed. (#4464)

## GStreamer
  - Support for the default devices was added to the deviceprovider. (#4268)
  - The graph clock is now used as the source for the GStreamer clock.
  - The sink now does some rate control.

## ALSA
  - The ALSA plugin now supports DSD when explicitly enabled.

## JACK
  - JACK now supports 2 new extension formats for OSC and UMP.
  - JACK clients can receive UMP MIDI1 or MIDI2 messages when using
    the new UMP port format extension.
