pipewire-0.3.50

[Bruce Dubbs]

New point version.

[Bruce Dubbs]

# PipeWire 0.3.50 (2022-04-13)

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

## Highlights

• pw-stream can now report more timing information and can suggest the optimal number of samples to queue for playback.
• pw-dot now works again..
• module-pulse-tunnel latency was improved.
• WINE applications using the JACK backend should no longer crash.
• The channelmixer defaults are improved and the muffled sound when playing back 5.1 and 7.1 material has been fixed.
• Many fixes and improvements.

## PipeWire

• pw-stream now places a suggested amount of samples in the pw-buffer for playback. This allows you to remove some places where spa_io_rate_match was needed to get this information.
• pw-stream has new API to request a timing update. New fields are added in the timing info, such as number of buffered samples in the resampler and the number of queued and dequeued buffers.
• pw-stream has support for double controls now. More controls are exposed such as the Rate control to do adaptive resampling.
• The thread-utils object was moved to the context to avoid some concurrent use cases that caused crashes.
• Deactivating an exported node/stream will now remove the node from the data-thread immediately so that the process function will not be called anymore and resources can be safely freed. This could fix some of the last remaining crashes when streams are stopped.
• PipeWire will now fail to load a module that tries to register the same export type twice instead of silently doing the wrong thing.

## Modules

• Many modules now use the NODE_WANT_DRIVER instead of the pipewire.dummy NODE_GROUP property. This makes it possible to use them with any other driver and can avoid resampling in some cases.
• module-pulse-tunnel now uses an adaptive resampler to keep the latency under control. Latency should be much better than before and stay constant even when there are network delays.
• There is now an option for packages to disable building the RTKit module, which is still built by default for backwards compatibility reasons.
• A leak was fixed in filter-chain.
• Module node names are now made more unique with the pid.

## tools

• pw-cat verbose output has been improved.
• pw-link now has a man page.
• pw-reserve now has an -r option to make it issue a RequestRelease command on the owner of the device. This makes it possible to ask WirePlumber to close and release a device.
• Fix pw-dot again. It didn't work anymore because of stray done events that were emitted to notify the client of object serials.

## SPA

• The channelmixer now has PSD upmixing enabled again. We used the simple upmixing in the previous release but that just sounds too aweful to be a good default.
• The channelmixer will not upmix FC and LFE anymore when upmixing is explicitly disabled.
• The channelmixer will only lowpass filter FC and LFE channels when they were upmixed.
• The defaults of the channelmixer were tweaked a little. There is now a little bit more bass in the LFE channel and more high fequencies in the FC channel when upmixing. Also the channel widening has been disabled by default.
• Locale independent float parsing now uses a more portable solution with uselocale.
• ALSA will now only allocate a buffer size big enough to hold 4 times the quantum limit instead of as large as possible.

## pulse-server

• Internal cleanups in handling of modules.
• A quirk to force s16 sample formats for teams-insider has been added.

## JACK

• The data-loop is now started in activate and stopped in deactivate. This makes the data-loop respect any custom thread functions you configure. This also makes WINE apps using the JACK backend work.
• Port sorting was improved/fixed.

[Bruce Dubbs]

Fixed at commit

706e72e3e2 Update to boost_1_79_0.
92aa2390f7 Update to json-c-0.16.
f02fed1a43 Update to pipewire-0.3.50.
5a472da610 Update to glib-2.72.1.
7b509ebe62 Update to php-8.1.5.