PipeASIO v1.2.1

Changed

• The Wine integration probes (asio_probe, the PipeWire delivery/filter
  probes) now run under CTest alongside the Linux-native unit tests, so
  ctest --test-dir build drives the whole suite - including the run that
  gates every tagged release.

Fixed

• The real-time audio thread ran at normal scheduling priority (SCHED_OTHER)
  on stock installs, causing xruns under any CPU load. PipeWire's data loop
  requests the "configured default" RT priority, which the thread-utils bridge
  treated as a no-op - and since that bridge bypasses module-rt/RTKit, nothing
  else promoted the thread either. The default request now maps to a real
  SCHED_FIFO priority (77, below the PipeWire daemon's data loop at 88), and
  on EPERM retries clamped to RLIMIT_RTPRIO. The thread driving the whole
  ASIO bufferSwitch chain now actually runs FIFO.
• Every audio_open leaked one zombie thread and its stack: the context's
  initial data loop was stopped through the Wine thread-utils bridge installed
  after the loop had started, so the original pthread was never joined. The
  loop is now stopped and joined through the utils that created it before the
  bridge is installed.
• Use-after-free when an ASIO host services kAsioResetRequest synchronously
  on the config-watcher thread and releases the driver from inside the
  notification: the watcher's state now lives in a refcounted heap context
  owned jointly by the driver and the thread, the only call-out is wrapped in
  AddRef/Release, and a same-thread stop orphans the context instead of
  waiting on itself. A synchronous DisposeBuffers/CreateBuffers reset no
  longer leaves two watchers racing the staged config or leaks the old
  thread's handles.
• The real-time output copy (and the silence paths) wrote a full host period
  into the PipeWire buffer with no capacity check, overrunning the mapping
  every cycle when the graph clamps the quantum below the host buffer size
  (clock.quantum-limit). Output and silence writes are now clamped to the
  dequeued buffer's capacity, mirroring the existing input-side clamp, in both
  the 64-bit and WoW64 paths.
• The 64-bit sample position wrapped every ~25 hours at 48 kHz again: on the
  wine64 ELF build ULONG is 32-bit but ULONG_MAX is 2^64-1, so the hi-word
  carry in the buffer-switch path never fired. The counters are now stored as
  atomic 64-bit values and split into the ASIO hi/lo wire format only at the
  edges, which also fixes a torn read of the position that raced the real-time
  writer.

---

Install

Prebuilt for Arch Linux / CachyOS (x86_64). The exact build toolchain (Wine, glibc, PipeWire, MinGW) is recorded in BUILD-INFO.txt inside the tarball.

• User-local: tar -xzf pipeasio-v1.2.1-archlinux-x86_64.tar.gz -C "$HOME/.local", then run pipeasio-register.
• Proton / Faugus: extract to $HOME/.local and set WINEDLLPATH=$HOME/.local/lib/wine.

Compatibility

A Wine builtin DLL is coupled to the Wine version and glibc it was built against. A different Wine or an older glibc may fail to load (regsvr32 c0000135). In that case build from source (README) or use the AUR package. Source tarballs are attached automatically below.