Releases — WirePlumber 0.5.14 documentation

# Releases

## WirePlumber 0.5.14

Additions & Enhancements:

> - Added per-device default volume configuration via the `device.routes.default-{source,sink}-volume` property, allowing device-specific volume defaults (e.g. a comfortable default for internal speakers or no attenuation for HDMI) (!772)

> - Added Lua 5.5 support; the bundled Lua subproject wrap has also been updated to 5.5.0 (!775, !788)

> - Enhanced libcamera monitor to load camera nodes locally within the WirePlumber process instead of the PipeWire daemon, eliminating race conditions that could occur during initial enumeration and hotplug events (!790)

> - Enhanced Bluetooth loopback nodes to always be created when a device supports both A2DP and HSP/HFP profiles, simplifying the logic and making the BT profile autoswitch setting take effect immediately without requiring device reconnection (!782)

> - Enhanced Bluetooth loopback nodes to use `target.object` property instead of smart filters, fixing issues that prevented users from setting them as default nodes and also allowing smart filters to be used with them (#898; !792)

> - Enhanced Bluetooth profile autoswitch logic with further robustness improvements, including better headset profile detection using profile name patterns and resolving race conditions by running profile switching after `device/apply-profile` in a dedicated event hook (#926, #923; !776, !777, !808)

> - Enhanced wpctl `set-default` command to accept virtual nodes (e.g. `Audio/Source/Virtual`) in addition to regular device nodes (#896; !787)

> - Improved stream linking to make the full graph rescan optional when linkable items change, saving CPU on low-end systems and reducing audio startup latency when connecting multiple streams in quick succession (!800)

> - Allowed installation of systemd service units without libsystemd being present, useful for distributions like Alpine Linux that allow systemd service subpackages (!793)

> - Allowed the `mincore` syscall in the WirePlumber systemd sandbox, required for Mesa/EGL (e.g. for the libcamera GPUISP pipeline)

> - Allowed passing `WIREPLUMBER_CONFIG_DIR` via the `wp-uninstalled` script, useful for passing additional configuration paths in an uninstalled environment (!801)

Fixes:

> - Removed Bluetooth sink loopback node, which was causing issues with KDE and GNOME (!794)

> - Fixed default audio source selection to never automatically use `Audio/Sink` nodes as the default source unless explicitly selected by the user (#886; !781)

> - Fixed crash in `state-stream` when the Format parameter has a Choice for the number of channels (#903; !795)

> - Fixed BAP Bluetooth device set channel properties, where `audio.position` was incorrectly serialized as a pointer address instead of the channel array (!786)

> - Fixed memory leaks in `wp_interest_event_hook_get_matching_event_types` and in the Lua `LocalModule()` implementation (!784, !810)

> - Fixed HFP HF stream media class being incorrectly assigned due to `api.bluez5.internal=true` being set on HFP HF streams (!809)

> - Fixed Lua 5.4 compatibility in `state-stream` script

> - Updated translations: Bulgarian, Georgian, Kazakh, Swedish

## Past releases

### WirePlumber 0.5.13

Additions & Enhancements:

> - Added internal filter graph support for audio nodes, allowing users to create audio preprocessing and postprocessing chains without exposing filters to applications, useful for software DSP (!743)

> - Added new Lua Properties API that significantly improves performance by avoiding constant serialization between WpProperties and Lua tables, resulting in approximately 40% faster node linking (!757)

> - Added WpIterator Lua API for more efficient parameter enumeration (!746)

> - Added bash completions for wpctl command (!762)

> - Added script to find suitable volume control when using role-based policy, allowing volume sliders to automatically adjust the volume of the currently active role (e.g., ringing, call, media) (!711)

> - Added experimental HDMI channel detection setting to use HDMI ELD information for channel configuration (!749)

> - Enhanced role-based policy to allow setting preferred target sinks for media role loopbacks via `policy.role-based.preferred-target` (!754)

> - Enhanced Bluetooth profile autoswitch logic to be more robust and handle saved profiles correctly, including support for loopback sink nodes (!739)

> - Enhanced ALSA monitor to include `alsa.*` device properties on nodes for rule matching (!761)

> - Optimized stream node linking for common cases to reduce latency when new audio/video streams are added (!760)

> - Improved event dispatcher performance by using hash table registration for event hooks, eliminating performance degradation as more hooks are registered (!765)

> - Increased audio headroom for VMware and VirtualBox virtual machines (!756)

> - Added setting to prevent restoring "Off" profiles via `session.dont-restore-off-profile` property (!753)

> - Added support for 128 audio channels when compiled with a recent version of PipeWire (pipewire#4995; CI checks in !768)

Fixes:

> - Fixed memory leaks and issues in the modem manager module (!770, !764)

> - Fixed MPRIS module incorrectly treating GHashTable as GObject (!759)

> - Fixed warning messages when process files in `/proc/<pid>/*` don't exist, particularly when processes are removed quickly (#816, !717)

> - Fixed MONO audio configuration to only apply to device sink nodes, allowing multi-channel mixing in the graph (!769)

> - Fixed event dispatcher hook registration and removal to avoid spurious errors (!747)

> - Improved logging for standard-link activation failures (!744)

> - Simplified event-hook interest matching for better performance (!758)

### WirePlumber 0.5.12

Additions & Enhancements:

> - Added mono audio configuration support via `node.features.audio.mono` setting that can be changed at runtime with wpctl (!721)

> - Added automatic muting of ALSA devices when a running node is removed, helping prevent loud audio on speakers when headsets are unplugged (!734)

> - Added notifications API module for sending system notifications (!734)

> - Added comprehensive wpctl man page and documentation (!735, #825)

> - Enhanced object interest handling for PipeWire properties on session items (!738)

Fixes:

> - Fixed race condition during shutdown in the permissions portal module that could cause crashes in GDBus signal handling (!748)

> - Added device validity check in state-routes handling to prevent issues when devices are removed during async operations (!737, #844)

> - Fixed Log.critical undefined function error in device-info-cache (!733)

> - Improved device hook documentation and configuration (!736)

### WirePlumber 0.5.11

Additions & Enhancements:

> - Added modem manager module for tracking voice call status and voice call device profile selection hooks to improve phone call audio routing on mobile devices (!722, !729, #819)

> - Added MPRIS media player pause functionality that automatically pauses media playback when the audio target (e.g. headphones) is removed (!699, #764)

> - Added support for human-readable names and localization of settings in `wireplumber.conf` with `wpctl` displaying localized setting descriptions (!712)

> - Improved default node selection logic to use both session and route priorities when nodes have equal session priorities (!720)

> - Increased USB device priority in the ALSA monitor (!719)

Fixes:

> - Fixed multiple Lua runtime issues including type confusion bugs, stack overflow prevention, and SPA POD array/choice builders (!723, !728)

> - Fixed proxy object lifecycle management by properly clearing the OWNED_BY_PROXY flag when proxies are destroyed to prevent dangling pointers (!732)

> - Fixed state-routes handling to prevent saving unavailable routes and eliminate race conditions during profile switching (!730, #762)

> - Fixed some memory leaks in the script tester and the settings iterator (!727, !726)

> - Fixed a potential crash caused by module-loopback destroying itself when the pipewire connection is closed (#812)

> - Fixed profile saving behavior in `wpctl set-profile` command (#808)

> - Fixed GObject introspection closure annotation

### WirePlumber 0.5.10

Fixed a critical crash in `linking-utils.haveAvailableRoutes` that was introduced accidentally in 0.5.9 and caused loss of audio output on affected systems (#797, #799, #800, !713)

### WirePlumber 0.5.9

Additions & Enhancements:

> - Added a new audio node grouping functionality using an external command line tool (!646)

> - The libcamera monitor now supports devices that are not associated with device ids (!701)

> - The wireplumber user systemd service is now associated with dbus.service to avoid strange warnings when dbus exits (!702)

> - Added "SYSLOG_IDENTIFIER", "SYSLOG_FACILITY", "SYSLOG_PID" and "TID" to log messages that are sent to the journal (!709)

Fixes:

> - Fixed a crash of `wpctl set-default` on 32-bit architectures (#773)

> - Fixed a crash when a configuration component had no 'provides' field (#771)

> - Reduced the log level of some messages that didn't need to be as high (!695)

> - Fixed another nil reference issue in the alsa.lua monitor script (!704)

> - Fixed name deduplication of v4l2 and libcamera devices (!705)

> - Fixed an issue with wpctl not being able to save settings sometimes (!708, #749)

### WirePlumber 0.5.8

Additions & Enhancements:

> - Added support for handling UCM SplitPCM nodes in the ALSA monitor, which allows native PipeWire channel remapping using loopbacks for devices that use this feature (!685)

> - Introduced new functions to mark WpSpaDevice child objects as pending. This allows properly associating asynchronously created loopback nodes with their parent WpSpaDevice without losing ObjectConfig events (!687, !689)

> - Improved the node name deduplication logic in the ALSA monitor to prevent node names with .2, .3, etc appended to them in some more cases (!688)

> - Added a new script to populate `session.services`. This is a step towards implementing detection of features that PipeWire can service (!686)

Fixes:

> - Fixed an issue that was causing duplicate Bluetooth SCO (HSP/HFP) source nodes to be shown in UIs (#701, !683)

> - In the BlueZ monitor, marked the source loopback node as non-virtual, addressing how it appears on UIs (#729)

> - Disabled stream-restore for device loopback nodes to prevent unwanted property changes (!691)

> - Fixed `wp_lua_log_topic_copy()` to correctly copy topic names (#757)

> - Updated script tests to handle differences in object identifiers (`object.serial` vs `node.id`), ensuring proper test behavior (#761)

### WirePlumber 0.5.7

Highlights:

> - Fixed an issue that would cause random profile switching when an application was trying to capture from non-Bluetooth devices (#715, #634, !669)

> - Fixed an issue that would cause strange profile selection issues [choices not being remembered or unavailable routes being selected] (#734)

> - Added a timer that delays switching Bluetooth headsets to the HSP/HFP profile, avoiding needless rapid switching when an application is trying to probe device capabilities instead of actually capturing audio (!664)

> - Improved libcamera/v4l2 device deduplication logic to work with more complex devices (!674, !675, #689, #708)

Fixes:

> - Fixed two memory leaks in module-mixer-api and module-dbus-connection (!672, !673)

> - Fixed a crash that could occur in module-reserve-device (!680, #742)

> - Fixed an issue that would cause the warning "[string "alsa.lua"]:182: attempt to concatenate a nil value (local 'node_name')" to appear in the logs when an ALSA device was busy, breaking node name deduplication (!681)

> - Fixed an issue that could make find-preferred-profile.lua crash instead of properly applying profile priority rules (#751)

### WirePlumber 0.5.6

Additions:

> - Implemented before/after dependencies for components, to ensure correct load order in custom configurations (#600)

> - Implemented profile inheritance in the configuration file. This allows profiles to inherit all the feature specifications of other profiles, which is useful to avoid copying long lists of features just to make small changes

> - Added multi-instance configuration profiles, tested and documented them

> - Added a `main-systemwide` profile, which is now the default for instances started via the system-wide systemd service and disables features that depend on the user session (#608)

> - Added a `wp_core_connect_fd` method, which allows making a connection to PipeWire via an existing open socket (useful for portal-based connections)

Fixes:

> - The Bluetooth auto-switch script now uses the common event source object managers, which should improve its stability (!663)

> - Fix an issue where switching between Bluetooth profiles would temporarily link active audio streams to the internal speakers (!655)

### WirePlumber 0.5.5

Highlights:

> - Hotfix release to address crashes in the Bluetooth HSP/HFP autoswitch functionality that were side-effects of some changes that were part of the role-based linking policy (#682)

Improvements:

> - wpctl will now properly show a '*' in front of sink filters when they are selected as the default sink (!660)

### WirePlumber 0.5.4

Highlights:

> - Refactored the role-based linking policy (previously known also as "endpoints" or "virtual items" policy) to blend in with the standard desktop policy. It is now possible use role-based sinks alongside standard desktop audio operations and they will only be used for streams that have a "media.role" defined. It is also possible to force streams to have a media.role, using a setting. Other features include: blending with smart filters in the graph and allowing hardware DSP nodes to be also used easily instead of requiring software loopbacks for all roles. (#610, !649)

Improvements:

> - Filters that are not declared as smart will now behave again as normal application streams, instead of being treated sometimes differently (!657)

Fixes:

> - Fixed an issue that would cause WirePlumber to crash at startup if an empty configuration file was present in one of the search paths (#671)

> - Fixed Bluetooth profile auto-switching when a filter is permanently linked to the Bluetooth source (!650)

> - Fixed an issue in the software-dsp script that would cause DSP filters to stay around and cause issues after their device node was destroyed (!651)

> - Fixed an issue in the autoswitch-bluetooth-profile script that could cause an infinite loop of switching between profiles (!652, #617)

> - Fixed a rare issue that could cause WirePlumber to crash when dealing with a device object that didn't have the "device.name" property set (#674)

### WirePlumber 0.5.3

Fixes:

> - Fixed a long standing issue that would cause many device nodes to have inconsistent naming, with a '.N' suffix (where N is a number >= 2) being appended at seemingly random times (#500)

> - Fixed an issue that would cause unavailable device profiles to be selected if they were previously stored in the state file, sometimes requiring users to manually remove the state file to get things working again (#613)

> - Fixed an occasional crash that could sometimes be triggered by hovering the volume icon on the KDE taskbar, and possibly other similar actions (#628, !644)

> - Fixed camera device deduplication logic when the same device is available through both V4L2 and libcamera, and the libcamera one groups multiple V4L2 devices together (#623, !636)

> - Fixed applying the default volume on streams that have no volume previously stored in the state file (#655)

> - Fixed an issue that would prevent some camera nodes - in some cases - from being destroyed when the camera device is removed (#640)

> - Fixed an issue that would cause video stream nodes to be linked with audio smart filters, if smart audio filters were configured (!647)

> - Fixed an issue that would cause WP to re-activate device profiles even though they were already active (!639)

> - Configuration files in standard JSON format (starting with a '{', among other things) are now correctly parsed (#633)

> - Fixed overriding non-container values when merging JSON objects (#653)

> - Functions marked with WP_PRIVATE_API are now also marked as non-introspectable in the gobject-introspection metadata (#599)

Improvements:

> - Logging on the systemd journal now includes the log topic and also the log level and location directly on the message string when the log level is high enough, which is useful for gathering additional context in logs submitted by users (!640)

> - Added a video-only profile in wireplumber.conf, for systems where only camera & screensharing are to be used (#652)

> - Improved seat state monitoring so that Bluetooth devices are only enabled when the user is active on a local seat, instead of allowing remote users as well (!641)

> - Improved how main filter nodes are detected for the smart filters (!642)

> - Added Lua method to merge JSON containers (!637)

### WirePlumber 0.5.2

Highlights:

> - Added support for loading configuration files other than the default wireplumber.conf within Lua scripts (!629)

> - Added support for loading single-section configuration files, without fragments (!629)

> - Updated the node.software-dsp script to be able to load filter-chain graphs from external configuration files, which is needed for Asahi Linux audio DSP configuration (!629)

Fixes:

> - Fixed destroying camera nodes when the camera device is removed (#627, !631)

> - Fixed an issue with Bluetooth BAP device set naming (!632)

> - Fixed an issue caused by the pipewire event loop not being "entered" as expected (!634, #638)

> - A false positive warning about no modules being loaded is now suppressed when using libpipewire >= 1.0.5 (#620)

> - Default nodes can now be selected using priority.driver when priority.session is not set (#642)

Changes:

> - The library version is now generated following pipewire's versioning scheme: libwireplumber-0.5.so.0.5.2 becomes libwireplumber-0.5.so.0.0502.0 (!633)

### WirePlumber 0.5.1

Highlights:

> - Added a guide documenting how to migrate configuration from 0.4 to 0.5, also available online at: https://pipewire.pages.freedesktop.org/wireplumber/daemon/configuration/migration.html If you are packaging WirePlumber for a distribution, please consider informing users about this.

Fixes:

> - Fixed an odd issue where microphones would stop being usable when a Bluetooth headset was connected in the HSP/HFP profile (#598, !620)

> - Fixed an issue where it was not possible to store the volume/mute state of system notifications (#604)

> - Fixed a rare crash that could occur when a node was destroyed while the 'select-target' event was still being processed (!621)

> - Fixed deleting all the persistent settings via `wpctl --delete` (!622)

> - Fixed using Bluetooth autoswitch with A2DP profiles that have an input route (!624)

> - Fixed sending an error to clients when linking fails due to a format mismatch (!625)

Additions:

> - Added a check that prints a verbose warning when old-style 0.4.x Lua configuration files are found in the system. (#611)

> - The "policy-dsp" script, used in Asahi Linux to provide a software DSP for Apple Sillicon devices, has now been ported to 0.5 properly and documented (#619, !627)

### WirePlumber 0.5.0

Changes:

> - Bumped the minimum required version of PipeWire to 1.0.2, because we make use of the 'api.bluez5.internal' property of the BlueZ monitor (!613)

> - Improved the naming of Bluetooth nodes when the auto-switching loopback node is present (!614)

> - Updated the documentation on "settings", the Bluetooth monitor, the Access configuration, the file search locations and added a document on how to modify the configuration file (#595, !616)

Fixes:

> - Fixed checking for available routes when selecting the default node (!609)

> - Fixed an issue that was causing an infinite loop storing routes in the state file (!610)

> - Fixed the interpretation of boolean values in the alsa monitor rules (#586, !611)

> - Fixes a Lua crash when we have 2 smart filters, one with a target and one without (!612)

> - Fixed an issue where the default nodes would not be updated when the currently selected default node became unavailable (#588, !615)

> - Fixed an issue that would cause the Props (volume, mute, etc) of loopbacks and other filter nodes to not be restored at startup (#577, !617)

> - Fixed how some constants were represented in the gobject-introspection file, mostly by converting them from defines to enums (#540, #591)

> - Fixed an issue using WirePlumber headers in other projects due to redefinition of G_LOG_DOMAIN (#571)

### WirePlumber 0.4.90

This is the first release candidate (RC1) of WirePlumber 0.5.0.

Highlights:

> - The configuration system has been changed back to load files from the WirePlumber configuration directories, such as `/etc/wireplumber` and `$XDG_CONFIG_HOME/wireplumber`, unlike in the pre-releases. This was done because issues were observed with installations that use a different prefix for pipewire and wireplumber. If you had a `wireplumber.conf` file in `/etc/pipewire` or `$XDG_CONFIG_HOME/pipewire`, you should move it to `/etc/wireplumber` or `$XDG_CONFIG_HOME/wireplumber` respectively (!601)

> - The internal base directories lookup system now also respects the `XDG_CONFIG_DIRS` and `XDG_DATA_DIRS` environment variables, and their default values as per the XDG spec, so it is possible to install configuration files also in places like `/etc/xdg/wireplumber` and override system-wide data paths (!601)

> - `wpctl` now has a `settings` subcommand to show, change and delete settings at runtime. This comes with changes in the `WpSettings` system to validate settings using a schema that is defined in the configuration file. The schema is also exported on a metadata object, so it is available to any client that wants to expose WirePlumber settings (!599, !600)

> - The `WpConf` API has changed to not be a singleton and support opening arbitrary config files. The main config file now needs to be opened prior to creating a `WpCore` and passed to the core using a property. The core uses that without letting the underlying `pw_context` open and read the default `client.conf`. The core also closes the `WpConf` after all components are loaded, which means all the config loading is done early at startup. Finally, `WpConf` loads all sections lazily, keeping the underlying files memory mapped until it is closed and merging them on demand (!601, !606)

### WirePlumber 0.4.82

This is a second pre-release of WirePlumber 0.5.0, made available for testing purposes. This is not API/ABI stable yet and there is still pending work to do before the final 0.5.0 release, both in the codebase and the documentation.

Highlights:

> - Bluetooth auto-switching is now implemented with a virtual source node. When an application links to it, the actual device switches to the HSP/HFP profile to provide the real audio stream. This is a more robust solution that works with more applications and is more user-friendly than the previous application whitelist approach

> - Added support for dynamic log level changes via the PipeWire `settings` metadata. Also added support for log level patterns in the configuration file

> - The "persistent" (i.e. stored) settings approach has changed to use two different metadata objects: `sm-settings` and `persistent-sm-settings`. Changes in the former are applied in the current session but not stored, while changes in the latter are stored and restored at startup. Some work was also done to expose a `wpctl` interface to read and change these settings, but more is underway

> - Several WirePlumber-specific node properties that used to be called `target.*` have been renamed to `node.*` to match the PipeWire convention of `node.dont-reconnect`. These are also now fully documented

Other changes:

> - Many documentation updates

> - Added support for SNAP container permissions

> - Fixed multiple issues related to restoring the Route parameter of devices, which includes volume state (#551)

> - Smart filters can now be targetted by specific streams directly when the `filter.smart.targetable` property is set (#554)

> - Ported the mechanism to override device profile priorities in the configuration, which is used to re-prioritize Bluetooth codecs

> - WpSettings is no longer a singleton class and there is a built-in component to preload an instance of it

### WirePlumber 0.4.81

This is a preliminary release of WirePlumber 0.5.0, which is made available for testing purposes. Please test it and report feedback (merge requests are also welcome ;) ). This is not API/ABI stable yet and there is still pending work to do before the final 0.5.0 release, both in the codebase and the documentation.

Highlights:

> - Lua scripts have been refactored to use the new event dispatcher API, which allows them to be split into multiple small fragments that react to events in a specified order. This allows scripts to be more modular and easier to maintain, as well as more predictable in terms of execution order.

> - The configuration system has been refactored to use a single SPA-JSON file, like PipeWire does, with support for fragments that can override options. This file is also now loaded using PipeWire's configuration API, which effectively means that the file is now loaded from the PipeWire configuration directories, such as `/etc/pipewire` and `$XDG_CONFIG_HOME/pipewire`.

> - The configuration system now has the concept of profiles, which are groups of components that can be loaded together, with the ability to mark certain components as optional. This allows having multiple configurations that can be loaded using the same configuration file. Optional components also allow loading the same profile gracefully on different setups, where some components may not be available (ex, loading of the session D-Bus plugin on a system-wide PipeWire setup now does not fail).

> - Many configuration options are now exposed in the `sm-settings` metadata, which allows changing them at runtime. This can be leveraged in the future to implement configuration tools that can modify WirePlumber's behaviour dynamically, without restarting.

> - A new "filters" system has been implemented, which allows specifying chains of "filter" nodes to be dynamically linked in-between streams and devices. This is achieved with certain properties and metadata that can be set on the filter nodes themselves.

> - The default linking policy now reads some more `target.*` properties from nodes, which allows fine-tuning some aspects of their linking behaviour, such as whether they are allowed to be re-linked or whether an error should be sent to the client if they cannot be linked.

> - Some state files have been renamed and some have changed format to use JSON for storing complex values, such as arrays. This may cause some of the old state to be lost on upgrade, as there is no transition path implemented.

> - The libcamera and V4L2 monitors have a "device deduplication" logic built-in, which means that for each physical camera device, only one node will be created, either from libcamera or V4L2, depending on which one is considered better for the device. This is mainly to avoid having multiple nodes for the same camera device, which can cause confusion when looking at the list of available cameras in applications.

### WirePlumber 0.4.17

Fixes:

> - Fixed a reference counting issue in the object managers that could cause crashes due to memory corruption (#534)

> - Fixed an issue with filters linking to wrong targets, often with two sets of links (#536)

> - Fixed a crash in the endpoints policy that would show up when log messages were enabled at level 3 or higher

### WirePlumber 0.4.16

Additions:

> - Added a new "sm-objects" script that allows loading objects on demand via metadata entries that describe the object to load; this can be used to load pipewire modules, such as filters or network sources/sinks, on demand

> - Added a mechanism to override device profile priorities in the configuration, mainly as a way to re-prioritize Bluetooth codecs, but this also can be used for other devices

> - Added a mechanism in the endpoints policy to allow connecting filters between a certain endpoint's virtual sink and the device sink; this is specifically intended to allow plugging a filter-chain to act as equalizer on the Multimedia endpoint

> - Added wp_core_get_own_bound_id() method in WpCore

Changes:

> - PipeWire 0.3.68 is now required

> - policy-dsp now has the ability to hide hardware nodes behind the DSP sink to prevent hardware misuse or damage

> - JSON parsing in Lua now allows keys inside objects to be without quotes

> - Added optional argument in the Lua JSON parse() method to limit recursions, making it possible to partially parse a JSON object

> - It is now possible to pass `nil` in Lua object constructors that expect an optional properties object; previously, omitting the argument was the only way to skip the properties

> - The endpoints policy now marks the endpoint nodes as "passive" instead of marking their links, adjusting for the behavior change in PipeWire 0.3.68

> - Removed the "passive" property from si-standard-link, since only nodes are marked as passive now

Fixes:

> - Fixed the `wpctl clear-default` command to completely clear all the default nodes state instead of only the last set default

> - Reduced the amount of globals that initially match the interest in the object manager

> - Used an idle callback instead of pw_core_sync() in the object manager to expose tmp globals

### WirePlumber 0.4.15

Additions:

> - A new "DSP policy" module has been added; its purpose is to automatically load a filter-chain when a certain hardware device is present, so that audio always goes through this software DSP before reaching the device. This is mainly to support Apple M1/M2 devices, which require a software DSP to be always present

> - WpImplModule now supports loading module arguments directly from a SPA-JSON config file; this is mainly to support DSP configuration for Apple M1/M2 and will likely be reworked for 0.5

> - Added support for automatically combining Bluetooth LE Audio device sets (e.g. pairs of earbuds) (!500)

> - Added command line options in `wpctl` to display device/node names and nicknames instead of descriptions

> - Added zsh completions file for `wpctl`

> - The device profile selection policy now respects the `device.profile` property if it is set on the device; this is useful to hand-pick a profile based on static configuration rules (alsa_monitor.rules)

Changes/Fixes:

> - Linking policy now sends an error to the client before destroying the node, if it determines that the node cannot be linked to any target; this fixes error reporting on the client side

> - Fixed a crash in suspend-node that could happen when destroying virtual sinks that were loaded from another process such as pw-loopback (#467)

> - Virtual machine default period size has been bumped to 1024 (#507)

> - Updated bluez5 default configuration, using `bluez5.roles` instead of `bluez5.headset-roles` now (!498)

> - Disabled Bluetooth autoconnect by default (!514)

> - Removed `RestrictNamespaces` option from the systemd services in order to allow libcamera to load sandboxed IPA modules (#466)

> - Fixed a JSON encoding bug with empty strings (#471)

> - Lua code can now parse strings without quotes from SPA-JSON

> - Added some missing since annotations and made them show up in the generated gobject-introspection file, to help bindings generators

### WirePlumber 0.4.14

Additions:

> - Added support for managing Bluetooth-MIDI, complimenting the parts that were merged in PipeWire recently (!453)

> - Added a default volume configuration option for streams whose volume has never been saved before; that allows starting new streams at a lower volume than 100% by default, if desired (!480)

> - Added support for managing link errors and propagating them to the client(s) involved. This allows better error handling on the application side in case a format cannot be negotiated - useful in video streams (see !484, pipewire#2935)

> - snd_aloop devices are now described as being "Loopback" devices (pipewire#2214)

> - ALSA nodes in the pro audio profile now get increased graph priority, so that they are more likely to become the driver in the graph

> - Added support for disabling libcamera nodes & devices with `node.disabled` and `device.disabled`, like it works for ALSA and V4L2 (#418)

### WirePlumber 0.4.13

Additions:

> - Added bluetooth SCO (HSP/HFP) hardware offload support, together with an example script that enables this functionality on the PinePhone

> - Encoded audio (mp3, aac, etc...) can now be passed through, if this mode is supported by both the application and the device

> - The v4l2 monitor now also respects the `node.disabled` and `device.disabled` properties inside rules

> - Added "Firefox Developer Edition" to the list of apps that are allowed to trigger a bluetooth profile auto-switch (#381)

> - Added support in the portal access script to allow newly plugged cameras to be immediately visible to the portal apps

Fixes:

> - Worked around an issue that would prevent streams from properly linking when using effects software like EasyEffects and JamesDSP (!450)

> - Fixed destroying pavucontrol-qt monitor streams after the node that was being monitored is destroyed (#388)

> - Fixed a crash in the alsa.lua monitor that could happen when a disabled device was removed and re-added (#361)

> - Fixed a rare crash in the metadata object (#382)

> - Fixed a bug where a restored node target would override the node target set by the application on the node's properties (#335)

Packaging:

> - Added build options to compile wireplumber's library, daemon and tools independently

> - Added a build option to disable unit tests that require the dbus daemon

> - Stopped using fakesink/fakesrc in the unit tests to be able to run them on default pipewire installations. Compiling the spa `test` plugin is no longer necessary

> - Added pkg-config and header information in the gir file

### WirePlumber 0.4.12

Changes:

> - WirePlumber now maintains a stack of previously configured default nodes and prioritizes to one of those when the actively configured default node becomes unavailable, before calculating the next default using priorities (see !396)

> - Updated bluetooth scripts to support the name changes that happened in PipeWire 0.3.59 and also support the experimental Bluetooth LE functionality

> - Changed the naming of bluetooth nodes to not include the profile in it; this allows maintaining existing links when switching between a2dp and hfp

> - The default volume for new outputs has changed to be 40% in cubic scale (= -24 dB) instead of linear (= 74% cubic / -8 dB) that it was before

> - The default volume for new inputs has changed to be 100% rather than following the default for outputs

> - Added `--version` flag on the wireplumber executable (#317)

> - Added `--limit` flag on `wpctl set-volume` to limit the higher volume that can be set (useful when incrementing volume with a keyboard shortcut that calls into wpctl)

> - The properties of the alsa midi node can now be set in the config files

Fixes:

> - Fixed a crash in lua code that would happen when running in a VM (#303)

> - Fixed a crash that would happen when re-connecting to D-Bus (#305)

> - Fixed a mistake in the code that would cause device reservation not to work properly

> - Fixed `wpctl clear-default` to accept 0 as a valid setting ID

> - Fixed the logic of choosing the best profile after the active profile of a device becomes unavailable (#329)

> - Fixed a regression that would cause PulseAudio "corked" streams to not properly link and cause busy loops

> - Fixed an issue parsing spa-json objects that have a nested object as the value of their last property

### WirePlumber 0.4.11

Changes:

> - The libcamera monitor is now enabled by default, so if the libcamera source is enabled in PipeWire, cameras discovered with the libcamera API will be available out of the box. This is safe to use alongside V4L2, as long as the user does not try to use the same camera over different APIs at the same time

> - Libcamera and V4L2 nodes now get assigned a `priority.session` number; V4L2 nodes get a higher priority by default, so the default camera is going to be /dev/video0 over V4L2, unless changed with `wpctl`

> - Libcamera nodes now get a user-friendly description based on their location (ex. built-in front camera). Additionally, V4L2 nodes now have a "(V4L2)" string appended to their description in order to be distinguished from the libcamera ones

> - 50-alsa-config.lua now has a section where you can set properties that will only be applied if WirePlumber is running in a virtual machine. By default it now sets `api.alsa.period-size = 256` and `api.alsa.headroom = 8192` (#162, #134)

Fixes:

> - The "enabled" properties in the config files are now "true" by default when they are not defined. This fixes backwards compatibility with older configuration files (#254)

> - Fixed device name deduplication in the alsa monitor, when device reservation is enabled (#241)

> - Reverted a previous fix that makes it possible again to get a glitch when changing default nodes while also changing the profile (GNOME Settings). The fix was causing other problems and the issue will be addressed differently in the future (#279)

> - Fixed an issue that would prevent applications from being moved to a recently plugged USB headset (#293)

> - Fixed an issue where wireplumber would automatically link control ports, if they are enabled, to audio ports, effectively breaking audio (#294)

> - The policy now always considers the profile of a device that was previously selected by the user, if it is available, when deciding which profile to activate (#179). This may break certain use cases (see !360)

> - A few documentation fixes

Tools:

> - wpctl now has a `get-volume` command for easier scripting of volume controls

> - wpctl now supports relative steps and percentage-based steps in `set-volume`

> - wpctl now also prints link states

> - wpctl can now `inspect` metadata objects without showing critical warnings

Library:

> - A new WpDBus API was added to maintain a single D-Bus connection among modules that need one

> - WpCore now has a method to get the virtual machine type, if WirePlumber is running in a virtual machine

> - WpSpaDevice now has a `wp_spa_device_new_managed_object_iterator()` method

> - WpSpaJson now has a `wp_spa_json_to_string()` method that returns a newly allocated string with the correct size of the string token

> - WpLink now has a `WP_LINK_FEATURE_ESTABLISHED` that allows the caller to wait until the link is in the PAUSED or ACTIVE state. This transparently now enables watching links for negotiation or allocation errors and failing gracefully instead of keeping dead link objects around (#294)

Misc:

> - The Lua subproject was bumped to version 5.4.4

### WirePlumber 0.4.10

Changes:

> - Added i18n support to be able to translate some user-visible strings

> - wpctl now supports using `@DEFAULT_{AUDIO_,VIDEO_,}{SINK,SOURCE}@` as ID, almost like pactl. Additionally, it supports a `--pid` flag for changing volume and mute state by specifying a process ID, applying the state to all nodes of a specific client process

> - The Lua engine now supports loading Lua libraries. These can be placed either in the standard Lua libraries path or in the "lib" subdirectory of WirePlumber's "scripts" directory and can be loaded with `require()`

> - The Lua engine's sandbox has been relaxed to allow more functionality in scripts (the debug & coroutine libraries and some other previously disabled functions)

> - Lua scripts are now wrapped in special WpPlugin objects, allowing them to load asynchronously and declare when they have finished their loading

> - Added a new script that provides the same functionality as module-fallback-sink from PipeWire, but also takes endpoints into account and can be customized more easily. Disabled by default for now to avoid conflicts

Policy:

> - Added an optional experimental feature that allows filter-like streams (like echo-cancel or filter-node) to match the channel layout of the device they connect to, on both sides of the filter; that means that if, for instance, a sink has 6 channels and the echo-cancel's source stream is linked to that sink, then the virtual sink presented by echo-cancel will also be configured to the same 6 channels layout. This feature needs to be explicitly enabled in the configuration ("filter.forward-format")

> - filter-like streams (filter-chain and such) no longer follow the default sink when it changes, like in PulseAudio

Fixes:

> - The suspend-node script now also suspends nodes that go into the "error" state, allowing them to recover from errors without having to restart WirePlumber

> - Fixed a crash in mixer-api when setting volume with channelVolumes (#250)

> - logind module now watches only for user state changes, avoiding errors when machined is not running

Misc:

> - The configuration files now have comments mentioning which options need to be disabled in order to run WirePlumber without D-Bus

> - The configuration files now have properties to enable/disable the monitors and other sections, so that it is possible to disable them by dropping in a file that just sets the relevant property to false

> - `setlocale()` is now called directly instead of relying on `pw_init()`

> - WpSpaJson received some fixes and is now used internally to parse configuration files

> - More applications were added to the bluetooth auto-switch apps whitelist

### WirePlumber 0.4.9

Fixes:

> - restore-stream no longer crashes if properties for it are not present in the config (#190)

> - spa-json no longer crashes on non-x86 architectures

> - Fixed a potential crash in the bluetooth auto-switch module (#193)

> - Fixed a race condition that would cause Zoom desktop audio sharing to fail (#197)

> - Surround sound in some games is now exposed properly (pipewire#876)

> - Fixed a race condition that would cause the default source & sink to not be set at startup

> - policy-node now supports the 'target.object' key on streams and metadata

> - Multiple fixes in policy-node that make the logic in some cases behave more like PulseAudio (regarding nodes with the dont-reconnect property and regarding following the default source/sink)

> - Fixed a bug with parsing unquoted strings in spa-json

Misc:

> - The policy now supports configuring "persistent" device profiles. If a device is manually set to one of these profiles, then it will not be auto-switched to another profile automatically under any circumstances (#138, #204)

> - The device-activation module was re-written in lua

> - Brave, Edge, Vivaldi and Telegram were added in the bluetooth auto-switch applications list

> - ALSA nodes now use the PCM name to populate node.nick, which is useful at least on HDA cards using UCM, where all outputs (analog, hdmi, etc) are exposesd as nodes on a single profile

> - An icon name is now set on the properties of bluetooth devices

### WirePlumber 0.4.8

Highlights:

> - Added bluetooth profile auto-switching support. Bluetooth headsets will now automatically switch to the HSP/HFP profile when making a call and go back to the A2DP profile after the call ends (#90)

> - Added an option (enabled by default) to auto-switch to echo-cancel virtual device nodes when the echo-cancel module is loaded in pipewire-pulse, if there is no other configured default node

Fixes:

> - Fixed a regression that prevented nodes from being selected as default when using the pro-audio profile (#163)

> - Fixed a regression that caused encoded audio streams to stall (#178)

> - Fixed restoring bluetooth device profiles

Library:

> - A new WpSpaJson API was added as a front-end to spa-json. This is also exposed to Lua, so that Lua scripts can natively parse and write data in the spa-json format

Misc:

> - wpctl can now list the configured default sources and sinks and has a new command that allows clearing those configured defaults, so that wireplumber goes back to choosing the default nodes based on node priorities

> - The restore-stream script now has its own configuration file in main.lua.d/40-stream-defaults.lua and has independent options for restoring properties and target nodes

> - The restore-stream script now supports rule-based configuration to disable restoring volume properties and/or target nodes for specific streams, useful for applications that misbehave when we restore those (see #169)

> - policy-endpoint now assigns the "Default" role to any stream that does not have a role, so that it can be linked to a pre-configured endpoint

> - The route-settings-api module was dropped in favor of dealing with json natively in Lua, now that the API exists

### WirePlumber 0.4.7

Fixes:

> - Fixed a regression in 0.4.6 that caused the selection of the default audio sources and sinks to be delayed until some event, which effectively caused losing audio output in many circumstances (#148, #150, #151, #153)

> - Fixed a regression in 0.4.6 that caused the echo-cancellation pipewire module (and possibly others) to not work

> - A default sink or source is now not selected if there is no available route for it (#145)

> - Fixed an issue where some clients would wait for a bit while seeking (#146)

> - Fixed audio capture in the endpoints-based policy

> - Fixed an issue that would cause certain lua scripts to error out with older configuration files (#158)

### WirePlumber 0.4.6

Changes:

> - Fixed a lot of race condition bugs that would cause strange crashes or many log messages being printed when streaming clients would connect and disconnect very fast (#128, #78, ...)

> - Improved the logic for selecting a default target device (#74)

> - Fixed switching to headphones when the wired headphones are plugged in (#98)

> - Fixed an issue where `udevadm trigger` would break wireplumber (#93)

> - Fixed an issue where switching profiles of a device could kill client nodes

> - Fixed briefly switching output to a secondary device when switching device profiles (#85)

> - Fixed `wpctl status` showing default device selections when dealing with module-loopback virtual sinks and sources (#130)

> - WirePlumber now ignores hidden files from the config directory (#104)

> - Fixed an interoperability issue with jackdbus (pipewire#1846)

> - Fixed an issue where pulseaudio tcp clients would not have permissions to connect to PipeWire (pipewire#1863)

> - Fixed a crash in the journald logger with NULL debug messages (#124)

> - Enabled real-time priority for the bluetooth nodes to run in RT (#132)

> - Made the default stream volume configurable

> - Scripts are now also looked up in $XDG_CONFIG_HOME/wireplumber/scripts

> - Updated documentation on configuring WirePlumber and fixed some more documentation issues (#68)

> - Added support for using strings as log level selectors in WIREPLUMBER_DEBUG

### WirePlumber 0.4.5

Fixes:

> - Fixed a crash that could happen after a node linking error (#76)

> - Fixed a bug that would cause capture streams to link to monitor ports of loopback nodes instead of linking to their capture ports

> - Fixed a needless wait that would happen on applications using the pipewire ALSA plugin (#92)

> - Fixed an issue that would cause endless rescan loops in policy-node and could potentially also cause other strange behaviors in case pavucontrol or another monitoring utility was open while the policy was rescanning (#77)

> - Fixed the endpoints-based policy that broke in recent versions and improved its codebase to share more code and be more in-line with policy-node

> - The semicolon character is now escaped properly in state files (#82)

> - When a player requests encoded audio passthrough, the policy now prefers linking to a device that supports that instead of trying to link to the default device and potentially failing (#75)

> - Miscellaneous robustness fixes in policy-node

API:

> - Added WpFactory, a binding for pw_factory proxies. This allows object managers to query factories that are loaded in the pipewire daemon

> - The file-monitor-api plugin can now watch files for changes in addition to directories

### WirePlumber 0.4.4

Highlights:

> - Implemented linking nodes in passthrough mode, which enables encoded iec958 / dsd audio passthrough

> - Streams are now sent an error if it was not possible to link them to a target (#63)

> - When linking nodes where at least one of them has an unpositioned channel layout, the other one is not reconfigured to match the channel layout; it is instead linked with a best effort port matching logic

> - Output route switches automatically to the latest one that has become available (#69)

> - Policy now respects the 'node.exclusive' and 'node.passive' properties

> - Many other minor policy fixes for a smoother desktop usage experience

API:

> - Fixed an issue with the `LocalModule()` constructor not accepting `nil` as well as the properties table properly

> - Added `WpClient.send_error()`, `WpSpaPod.fixate()` and `WpSpaPod.filter()` (both in C and Lua)

Misc:

> - Bumped meson version requirement to 0.56 to be able to use `meson.project_{source,build}_root()` and ease integration with pipewire's build system as a subproject

> - wireplumber.service is now an alias to pipewire-session-manager.service

> - Loading the logind module no longer fails if it was not found on the system; there is only a message printed in the output

> - The logind module can now be compiled with elogind (#71)

> - Improvements in wp-uninstalled.sh, mostly to ease its integration with pipewire's build system when wireplumber is build as a subproject

> - The format of audio nodes is now selected using the same algorithm as in media-session

> - Fixed a nasty segfault that appeared in 0.4.3 due to a typo (#72)

> - Fixed a re-entrancy issue in the wplua runtime (#73)

### WirePlumber 0.4.3

Fixes:

> - Implemented logind integration to start the bluez monitor only on the WirePlumber instance that is running on the active seat; this fixes a bunch of startup warnings and the disappearance of HSP/HFP nodes after login (#54)

> - WirePlumber is now launched with GIO_USE_VFS=local to avoid strange D-Bus interference when the user session is restarted, which previously resulted in WirePlumber being terminated with SIGTERM and never recovering (#48)

> - WirePlumber now survives a restart of the D-Bus service, reconnecting to the bus and reclaiming the bus services that it needs (#55)

> - Implemented route-settings metadata, which fixes storing volume for the "System Sounds" in GNOME (#51)

> - Monitor sources can now be selected as the default source (#60)

> - Refactored some policy logic to allow linking to monitors; the policy now also respects "stream.capture.sink" property of streams which declares that the stream wants to be linked to a monitor (#66)

> - Policy now cleans up 'target.node' metadata so that streams get to follow the default source/sink again after the default was changed to match the stream's currently configured target (#65)

> - Fixed configuring virtual sources (#57)

> - Device monitors now do not crash if a SPA plugin is missing; instead, they print a warning to help users identify what they need to install (!214)

> - Fixed certain "proxy activation failed" warnings (#44)

> - iec958 codec configuration is now saved and restored properly (!228)

> - Fixed some logging issues with the latest version of pipewire (!227, !232)

> - Policy now respects the "node.link-group" property, which fixes issues with filter-chain and other virtual sources & sinks (#47)

> - Access policy now grants full permissions to flatpak "Manager" apps (#59)

Policy:

> - Added support for 'no-dsp' mode, which allows streaming audio using the format of the device instead of the standard float 32-bit planar format (!225)

Library:

> - WpImplMetadata is now implemented using pw_impl_metadata instead of using its own implementation (#52)

> - Added support for custom object property IDs in WpSpaPod (#53)

Misc:

> - Added a script to load the libcamera monitor (!231)

> - Added option to disable building unit tests (!209)

> - WirePlumber will now fail to start with a warning if pipewire-media-session is also running in the system (#56)

> - The bluez monitor configuration was updated to match the latest one in pipewire-media-session (!224)

### WirePlumber 0.4.2

Highlights:

> - Requires PipeWire 0.3.32 or later at runtime

> - Configuration files are now installed in $PREFIX/share/wireplumber, along with scripts, following the paradigm of PipeWire

> - State files are now stored in $XDG_STATE_HOME instead of $XDG_CONFIG_HOME

> - Added new `file-monitor-api` module, which allows Lua scripts to watch the filesystem for changes, using inotify

> - Added monitor for MIDI devices

> - Added a `system-lua-version` meson option that allows distributors to choose which Lua version to build against (`auto`, `5.3` or `5.4`)

> - wpipc has been removed and split out to a separate project, https://git.automotivelinux.org/src/pipewire-ic-ipc/

Library:

> - A new `WpImplModule` class has been added; this allows loading a PipeWire module in the WirePlumber process space, keeping a handle that can be used to unload that module later. This is useful for loading filters, network sources/sinks, etc...

> - State files can now store keys that contain certain GKeyFile-reserved characters, such as `[`, `]`, `=` and space; this fixes storing stream volume state for streams using PipeWire's ALSA compatibility PCM plugin

> - `WpProperties` now uses a boxed `WpPropertiesItem` type in its iterators so that these iterators can be used with g-i bindings

> - Added API to lookup configuration and script files from multiple places in the filesystem

Lua:

> - A `LocalModule` API has been added to reflect the functionality offered by `WpImplModule` in C

> - The `Node` API now has a complete set of methods to reflect the methods of `WpNode`

> - Added `Port.get_direction()`

> - Added `not-equals` to the possible constraint verbs

> - `Debug.dump_table` now sorts keys before printing the table

Misc:

> - Tests no longer accidentally create files in $HOME; all transient files that are used for testing are now created in the build directory, except for sockets which are created in `/tmp` due to the 108-character limitation in socket paths

> - Tests that require optional SPA plugins are now skipped if those SPA plugins are not installed

> - Added a nice summary output at the end of meson configuration

> - Documented the Lua ObjectManager / Interest / Constraint APIs

> - Fixed some memory leaks

### WirePlumber 0.4.1

Bug fix release to go with PipeWire 0.3.31. Please update to this version if you are using PipeWire >= 0.3.31.

Highlights:

> - WirePlumber now supports Lua 5.4. You may compile it either with Lua 5.3 or 5.4, without any changes in behavior. The internal Lua subproject has also been upgraded to Lua 5.4, so any builds with `-Dsystem-lua=false` will use Lua 5.4 by default

Fixes:

> - Fixed filtering of pw_metadata objects, which broke with PipeWire 0.3.31

> - Fixed a potential livelock condition in si-audio-adapter/endpoint where the code would wait forever for a node's ports to appear in the graph

> - Fixed granting access to camera device nodes in flatpak clients connecting through the camera portal

> - Fixed a lot of issues found by the coverity static analyzer

> - Fixed certain race conditions in the wpipc library

> - Fixed compilation with GCC older than v8.1

Scripts:

> - Added a policy script that matches nodes to specific devices based on the "media.role" of the nodes and the "device.intended-roles" of the devices

Build system:

> - Bumped GLib requirement to 2.62, as the code was already using 2.62 API

> - Added support for building WirePlumber as a PipeWire subproject

> - Doxygen version requirement has been relaxed to accept v1.8

> - The CI now also verifies that the build works on Ubuntu 20.04 LTS and tries multiple builds with different build options

### WirePlumber 0.4.0

This is the first stable release of the 0.4.x series, which is expected to be an API & ABI stable release series to go along with PipeWire 0.3.x. It is a fundamental goal of this series to maintain compatibility with pipewire-media-session, making WirePlumber suitable for a desktop PulseAudio & JACK replacement setup, while supporting other setups as well (ex. automotive) by making use of its brand new Lua scripting engine, which allows making customizations easily.

Highlights:

> - Re-implemented the default-routes module in lua, using the same logic as the one that pipewire-media-session uses. This fixes a number of issues related to volume controls on alsa devices.

> - Implemented a restore-stream lua script, based on the restore-stream module from media-session. This allows storing stream volumes and targets and restoring them when the stream re-connects

> - Added support for handling dont-remix streams and streams that are not autoconnected. Fixes `pw-cat -p --target=0` and the gnome-control-center channel test

> - Device names are now sanitized in the same way as in pipewire-media-session

> - Disabled endpoints in the default configuration. Using endpoints does not provide the best experience on desktop systems yet

> - Fixed a regression introduced in 0.3.96 that would not allow streams to be relinked on their endpoints after having been corked by the policy

Library:

> - Some API methods were changed to adhere to the programming practices followed elsewhere in the codebase and to be future-proof. Also added paddings on public structures so that from this point on, the 0.4.x series is going to be API & ABI stable

> - lua: added WpState and wp_metadata_set() bindings and improved WpObject.activate() to report errors

> - ObjectManager: added support for declaring interest on all kinds of properties of global objects. Previously it was only possible to declare interest on pipewire global properties

Misc:

> - daemon & wpexec: changed the exit codes to follow the standardized codes defined in sysexits.h

> - wpexec now forces the log level to be >= 1 so that lua runtime errors can be printed on the terminal

> - Fixed issues with gobject-introspection data that were introduced by the switch to doxygen

> - Fixed a build issue where wp-gtkdoc.h would not be generated in time for the gobject-introspection target to build

> - Added a valgrind test setup in meson, use with `meson test --setup=valgrind`

> - Many memory leak and stability fixes

> - Updated more documentation pages

### WirePlumber 0.3.96

Second pre-release (RC2) of WirePlumber 0.4.0.

Highlights:

> - The policy now configures streams for channel upmixing/downmixing

> - Some issues in the policy have been fixed, related to:

>   - plugging a new higher priority device while audio is playing

>   - pavucontrol creating links to other stream nodes for level monitoring

>   - some race condition that could happen at startup

> - Proxy object errors are now handled; this fixes memory leaks of invalid links and generally makes things more robust

> - The systemd service units now conflict with pipewire-media-session.service

> - Session & EndpointLink objects have been removed from the API; these were not in use after recent refactoring, so they have been removed in order to avoid carrying them in the ABI

> - The documentation system has switched to use Doxygen & Sphinx; some documentation has also been updated and some Lua API documentation has been introduced

### WirePlumber 0.3.95

First pre-release (RC1) of WirePlumber 0.4.0.

Highlights:

> - Lua scripting engine. All the session management logic is now scripted and there is also the ability to run scripts standalone with `wpexec` (see tests/examples).

> - Compatibility with the latest PipeWire (0.3.26+ required). Also, most features and behavioral logic of pipewire-media-session 0.3.26 are available, making WirePlumber suitable for a desktop PulseAudio & JACK replacement setup.

> - Compatibility with embedded system policies, like the one on AGL, has been restored and is fully configurable.

> - The design of endpoints has been simplified. We now associate endpoints with use cases (roles) instead of physical devices. This removes the need for "endpoint stream" objects, allows more logic to be scripted in lua and makes the graph simpler. It is also possible to run without endpoints at all, matching the behavior of pipewire-media-session and pulseaudio.

> - Configuration is now done using a pipewire-style json .conf file plus lua files. Most of the options go in the lua files, while pipewire context properties, spa_libs and pipewire modules are configured in the json file.

> - Systemd unit files have been added and are the recommended way to run wireplumber. Templated unit files are also available, which allow running multiple instances of wireplumber with a specific configuration each.

### WirePlumber 0.3.0

The desktop-ready release!

Changes since 0.2.96:

> - Changed how the device endpoints & nodes are named to make them look better in JACK graph tools, such as qjackctl. JACK tools use the ':' character as a separator to distinguish the node name from the port name (since there are no actual nodes in JACK) and having ':' in our node names made the graph look strange in JACK

> - Fixed an issue with parsing wireplumber.conf that could cause out-of-bounds memory access

> - Fixed some pw_proxy object leaks that would show up in the log

> - Fixed more issues with unlinking the stream volume (si-convert) node from the ALSA sink node and suspending the both; This now also works with PipeWire 0.3.5 and 0.3.6, so it is possible to use these PipeWire versions with WirePlumber without disabling streams on audio sinks.

### WirePlumber 0.2.96

Second pre-release (RC2) of WirePlumber 0.3.0

Changes since 0.2.95:

> - Quite some work went into fixing bugs related to the `ReserveDevice1` D-Bus API. It is now possible to start a JACK server before or after WirePlumber and WirePlumber will automatically stop using the device that JACK opens, while at the same time it will enable the special "JACK device" that allows PipeWire to interface with JACK

> - Fixed a number of issues that did not previously allow using the spa bluez5 device with WirePlumber. Now it is possible to at least use the A2DP sink (output to bluetooth speakers) without major issues

> - On the API level, `WpCore` was changed to allow having multiple instances that share the same `pw_context`. This is useful to have multiple connections to PipeWire, while sharing the context infrastructure

> - `WpCore` also gained support for retrieving server info & properties and `wpctl status` now also prints info about the server & all clients

> - `module-monitor` was modified to allow loading multiple monitor instances with one instance of the module itself

> - Audio nodes are now configured with the sample rate that is defined globally in `pipewire.conf` with `set-prop default.clock.rate <rate>`

> - Policy now respects the `node.autoconnect` property; additionally, it is now possible to specify endpoint ids in the `node.target` property of nodes (so endpoint ids are accepted in the `PIPEWIRE_NODE` environment variable, and in the `path` property of the pipewire gstreamer elements)

> - Fixed an issue where links between the si-convert audioconvert nodes and the actual device nodes would stay active forever; they are now declared as "passive" links, which allows the nodes to suspend. This requires changes to PipeWire that were commited after 0.3.6; when using WirePlumber with 0.3.5 or 0.3.6, it is recommended to disable streams on audio sinks by commenting out the `streams = "audio-sink.streams"` lines in the .endpoint configuration files

> - `wireplumber.conf` now accepts comments to be present inside blocks and at the end of valid configuration lines

> - Improved documentation and restructured the default configuration to be more readable and sensible

> - Fixed issues that prevented using WirePlumber with GLib < 2.60; 2.58 is now the actual minimum requirement

### WirePlumber 0.2.95

First pre-release of WirePlumber 0.3.0.

This is the first release that targets desktop use-cases. It aims to be fully compatible with `pipewire-media-session`, while at the same time it adds a couple of features that `pipewire-media-session` lacks, such as:

> - It makes use of session, endpoint and endpoint-stream objects to orchestrate the graph

> - It is configurable:

>   - It supports configuration of endpoints, so that their properties (such as their name) can be overriden

>   - It also supports declaring priorities on endpoints, so that there are sane defaults on the first start

>   - It supports partial configuration of linking policy

>   - It supports creating static node and device objects at startup, also driven by configuration files

> - It has the concept of session default endpoints, which can be changed with `wpctl` and are stored in XDG_CONFIG_DIR, so the user may change at runtime the target device of new links in a persistent way

> - It supports volume & mute controls on audio endpoints, which can be set with `wpctl`

> - Last but not least, it is extensible

Also note that this release currently breaks compatibility with AGL, since the policy management engine received a major refactoring to enable more use-cases, and has been focusing on desktop support ever since. Policy features specific to AGL and other embedded systems are expected to come back in a 0.3.x point release.

### WirePlumber 0.2.0

As shipped in AGL Itchy Icefish 9.0.0 and Happy Halibut 8.0.5

### WirePlumber 0.1.2

As shipped in AGL Happy Halibut 8.0.2

### WirePlumber 0.1.1

As shipped in AGL Happy Halibut 8.0.1

### WirePlumber 0.1.0

First release of WirePlumber, as shipped in AGL Happy Halibut 8.0.0