pipewire-0.3.40

[Bruce Dubbs]

New point version.

[Xi Ruoyao]

Add -Dsession-managers= to meson command to avoid automatic downloading of external deps.

[Bruce Dubbs]

PipeWire 0.3.40 (2021-11-11)

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

## Highlights

• Producers and consumers can now incrementally negotiate a format by narrowing down the options. This can be used to select an optimal combination of format and modifiers.
• Driver nodes such as the consumer of a headless compositor can now throttle the speed based on a new trigger_done event.
• Headless compositors can now signal a damage event to consumers to start the processing of the graph.
• Compatibility improvements in JACK.
• Draining and resuming is now working correctly in pulse and alsa.
• Many bugfixes and improvements.

## PipeWire

• Many BSD fixes.
• clang compilation fixes.
• Fix map implementation on big-endian machines.
• Improve tracking of param changes in pw-stream.
• Add support for renegotiation. With this change, producer and consumer can incrementally renegotiate a format until it is fixed.
• Add a trigger-done event in the stream. This can be used to know when processing of the complete graph has finished after issuing a trigger_process() and it can be used to throttle processing.
• Add a RequestProcess node event and command. This can be used by non-driver nodes to suggest to a driver to start processing. One case is where a compositor can emit this event as a result of a screen update to let the headless compositor start an update.
• Fix zeroconf sample format.
• pw-mon outputs to stderr now and has colors.

## SPA

• Fix compilation on ppc and armv7.
• Fix port type check for ALSA seq midi ports so that they are not falsely listed as hardware.
• Fix crash when running SSE code on unsupported HW.
• The libcamera plugin was rewritten. It now supports hotplug, format enumeration and an easier to read codebase.
• Fix compatibility some more for cards with 64 channels.

## pulse-server

• Flush data in pause in combine-sink to avoid stray audio fragments.
• Fix a race where not all objects were removed correctly.
• The latency calculations and setup was improved to more closely match pulseaudio behaviour. PULSE_LATENCY_MSEC should now resemble pulseaudio more closely.
• The drained reply is now sent only once and new data will be accepted once the drain completes.
• Fix a potential crasher bug where the stream started processing before the setup was completed.
• The server will now drop the client connections when the pipewire connection is lost.

## JACK

• Rework the jack_port_get_buffer() method to return the same memory when called multiple times during the process() callback. This makes things work on a new Hydrogen.
• Add an option to disable showing the monitor ports.
• JACK ports are now sorted per node/client and port_id. This should more closely match JACK behaviour and avoid random port order.

## v4l2

• Fix v4l2 LD_PRELOAD script.
• Make sure we destroy the proxy when the global is destroyed.

## ALSA

• _prepare should exit the draining state.
• Fix the precision of the _delay function by taking into account the amount of queued samples are the correct samplerate.

[Bruce Dubbs]

Fixed at commit 7fa5ff6cd3161e8012649fbfdbaa09f9309a1fe7

Package updates.
    Update to git-2.34.0.
    Update to libuninameslist-20211114.
    Update to sg3_utils-1.47.
    Update to pipewire-0.3.40.
    Update to curl-7.80.0.
    Update to mlt-7.2.0.