0.3.71

NEWS

@@ -1,3 +1,148 @@
+# PipeWire 0.3.71 (2023-05-17)
+
+This is a bugfix release that is API and ABI compatible with previous
+0.3.x releases.
+
+## Highlights
+  - A new zero-latency jackdbus bridge was added. This works similar to what
+    PulseAudio has to offer and creates a sink/source when jackdbus is
+    started. It is however much more efficient and runs the complete PipeWire
+    graph as a synchronous JACK client with no added latency.
+  - Many performance improvements. Activation of remote nodes is more
+    efficient, fewer eventfds are required on the clients, less callback
+    overhead in performence critical paths and an optimized poll function
+    was added. This was mainly driven by the jackdbus module to get the lowest
+    possible overhead when running the graph.
+  - The JACK notify callback implementation was reworked to emulate better what
+    JACK does, improving compatibility with ardour7 and the JACK stress test.
+  - More work on BAP devices. Device latency is now passed on to
+    applications also for multi-device headsets, and channel allocation
+    is handled better.
+  - Many more improvements and bugfixes.
+
+
+## PipeWire
+  - Remove the hardcoded limit on io_areas. This is used to link nodes together
+    and exchange buffers, it was limited to 2048 but now dynamically scales
+    based on requirements.
+  - Rate and quantum changes are now applied correctly in more cases. (#3159)
+  - Updates to client-node to more efficiently process the driver.
+  - The profiler information was improved to be more accurate. It should
+    now work better for remote drivers.
+  - Some potential memory map errors were fixed in the protocol because in some
+    case with large messages, some fds were closed too soon.
+  - pw-filter now implements the pw_filter_set_active() method.
+  - A potential out-of-buffers case was fixed in capture pw-streams where buffers
+    were not moved to the recycle queue when the node suspended.
+  - Nodes are now always woken up with the eventfd. Previously there were
+    some optimiztions in the server to directly call into the node process
+    function but that optimization is not necessary. Without this optimization
+    it is now possible to run nodes in different threads.
+  - pw-stream trigger is now implemented correctly in all cases.
+  - Remote nodes now use one eventfd less because they get triggered with the
+    node eventfd directly.
+  - Monitor ports are now ignored in latency updates.
+  - A potential race when reporting an error to a client was fixed. (#3192)
+  - Fix a bug where always_process nodes would sometimes IDLE. (#3189)
+  - Optimize peer activation. Nodes are now activated more efficiently and
+    independent of the number of links. It also reduces the number of eventfds
+    and memory in remote clients.
+  - A bug in property serialization was fixed. Values with spaces would only
+    serialize the first part of the value.
+
+## Modules
+  - Correctly handle the echo-canceler plugin init method fallback. The
+    samplerate was not correctly configured. This is only a regression for people
+    that have external echo-canceler plugins.
+  - RAOP sink now only sets the volume on the remote end when the stream is
+    recording. (#3175)
+  - RAOP discover now tries to deduplicate entries from the same host.
+  - A new zero-latency jackdbus bridge was added. This works similar to what
+    pulseaudio has to offer and creates a sink/source when jackdbus is
+    started. It is however much more efficient and runs the complete PipeWire
+    graph as a synchronous JACK client.
+  - The access module uses a more secure way to check the application
+    executable.
+  - module-combine-stream now has configurable delay and latency for each
+    stream. This can be used to align sinks/sources with different latencies.
+  - A potential crash in module-pulse-tunnel was fixed when shutting down.
+    (#3199)
+  - Module-rt will now clamp the nice value to the min allowed value to avoid
+    errors from rtkit. (#3186)
+  - Fix a bug with the session counters in module-rtp-sap. Also use the right
+    format for L24. Improve the AES67 example config.
+  - Improve some warning and info messages in module-rt. (#3194)
+  - module-rtp-session should now do something when started without arguments.
+  - A potential crash in module-rtp-session was fixed. (#3217)
+  - module-filter-chain has better error reporting when a convolver fails to
+    load. (#3223)
+
+## SPA
+  - Move some things around to avoid compiler warnings. (#3171)
+  - Increase mixer ports. Reorganize some things and bump mixer input ports
+    from 128 to 512.
+  - Fix a potential crash when a node is scheduled before it completes
+    the setup.
+  - The JACK sink and source SPA plugins have seen some improvements.
+  - Allow the peaks resampler still if we disabled resampling.
+  - Perform more cleanup in audioadapter when in error.
+  - An optimized non-cancellable loop implementation was added.
+  - Callbacks were optimized with a _fast() varsion that doesn't check the
+    version and method. When this check is performed earlier, it can
+    be skipped in performance critical places.
+  - Some of the callbacks and system methods are now using the fast function
+    calls in critical paths.
+  - A potential division by zero was fixed in the ALSA plugins.
+  - Improve rate and quantum when starting audioconvert.
+  - Make it possible to override node.driver in the SPA null-audio-driver.
+    (#3220)
+
+## pulse-server
+  - The audio info parameter parsing was refactored and improved.
+  - Fix some races with clients exiting when playing samples.
+  - An option was added to change or disable the dbus name registration.
+    (#2987)
+
+## Bluetooth
+  - Implement battery reporting using AT+XEVENT.
+  - Disable hardware volume for 3M WorkTunes.
+  - Implement BAP audio locations (channel positions) by using the new
+    bluez properties.
+
+## JACK
+  - Fix some errors reported by JACK test.cpp. (#2638)
+  - Add jack.show-midi option to show/hide midi ports.
+  - Add jack.max-client-ports option. JACK also has a port limit and so
+    PipeWire needs it as well to make the tests happy.
+  - Call the shutdown callback only when the server stopped, not when there
+    is a random error. (#3070)
+  - Avoid registering the same port name twice.
+  - Call port registration callbacks in activate/deactivate.
+  - Improve jack_port_connected().
+  - Improve some error reporting.
+  - The JACK headers were updated to a newer version.
+  - JACK callbacks are now managed with an event queue to simulate
+    more what JACK does. This avoids emiting callbacks when a method is blocking
+    for a reply and causing deadlocks. (#3183)
+  - Assign unique names to JACK clients. (#2833)
+  - Fix a potential crash when the thread_utils was used after free.
+  - Aliases are now not filled in by default to improve JACK compatibility.
+    (#3154)
+
+# ALSA
+  - The ALSA plugin will now wait for negotiation to complete or an error
+    before _prepare() completes. This makes more applications deal correctly
+    with the potential errors.
+
+# Docs
+  - A new document about how scheduling is implemented was added.
+  - Update the pw-cli man page. (#2988)
+  - Document the SPA Pod serialization.
+  - Document the PipeWire native protocol.
+
+
+Older versions:
+
 # PipeWire 0.3.70 (2023-04-20)
 
 This is a quick bugfix release that is API and ABI compatible with previous
@@ -62,9 +207,6 @@ This is a quick bugfix release that is API and ABI compatible with previous
   - The GStreamer source now uses the BaseSrc clocking code to implement
     the clock and timing code.
 
-
-Older versions:
-
 # PipeWire 0.3.69 (2023-04-13)
 
 This is a quick bugfix release that is API and ABI compatible with previous

meson.build

@@ -1,5 +1,5 @@
 project('pipewire', ['c' ],
-  version : '0.3.70',
+  version : '0.3.71',
   license : [ 'MIT', 'LGPL-2.1-or-later', 'GPL-2.0-only' ],
   meson_version : '>= 0.61.1',
   default_options : [ 'warning_level=3',