pwasio provides an ASIO to PipeWire for Wine. ASIO is the most common Windows low-latency audio driver, so is commonly used in audio workstation programs. Requires at least PipeWire 1.5.0 for shared audio buffers, which at the time of writing needs to be built from source. Current Steam Runtime (sniper) includes PipeWire 0.3.65, so running there will result in linking errors.

Do the following to build for 64-bit Wine.

make

To install

cp lib/wine/x86_64-windows/pwasio.dll /path/to/winelibs/x86_64-windows/
cp lib/wine/x86_64-unix/pwasio.dll.so /path/to/winelibs/x86_64-unix/

At the time of writing, the DLLs included in a new Proton prefix are fixed at build time, so if using Proton you must also copy the DLL to the default prefix

cp lib/wine/x86_64-windows/pwasio.dll /path/to/proton/files/share/default_pfx/drive_c/windows/system32

After installation, if using an existing Wine prefix you'll also need to copy the dummy DLL to the prefix path

cp lib/wine/x86_64-windows/pwasio.dll /path/to/prefix/drive_c/windows/system32

Finally, the driver needs to be registered so it's visible to ASIO enabled applications via

WINEPREFIX=/path/to/prefix regsvr32 pwasio.dll

This project comes solely out of frustration of being unable to run Ableton Live in my current PipeWire/Proton based Arch Linux setup. This project would not at all be possible without the skeleton laid out in the original WineASIO project, Despite being a complete refactor, I consider pwasio a derivative work of WineASIO and as such all original authors from that have been kept here.

In terms of features, stability and user-friendliness pwasio is merely a shadow of what WineASIO currently is. It works, but that's literally it. Care has also been taken so that this does not conflict with a WineASIO installation so that users may try out both and figure out what suits them better.

Configuration lives in the registry at HKEY_CURRENT_USER\Software\ASIO\pwasio and can be done through the ASIO control panel while the driver is loaded.

Most options are self explanatory. However,

These options operate through the PipeWire PW_KEY_NODE_FORCE_QUANTUM and PW_KEY_NODE_FORCE_RATE options, which force the PipeWire graph to run under the specific configuration. Setting these to values not supported by your hardware might incur overhead.

Defaults to zero which gives default thread scheduling. Setting this to >= 2 will give the host and the driver realtime scheduling, which may be necessary to achieve lower latencies. The user must have realtime privileges. The value sets the SCHED_FIFO priority for the driver, and the host audio thread receives a priority of one less than what is configured (hence the minimum value nonzero value of 2).

• 26/10/2025: Driver can now run in realtime thread (GG)
• 11/10/2025: Add control panel and persistent configuration (GG)
• 10/10/2025: Use decoupled input and output streams (GG)
• 21/09/2025: PipeWire now directly uses the ASIO buffers (GG)
• 01/09/2025: Initial version (GG)

Copyright (C) 2006 Robert Reif
Portions copyright (C) 2007 Ralf Beck
Portions copyright (C) 2007 Johnny Petrantoni
Portions copyright (C) 2007 Stephane Letz
Portions copyright (C) 2008 William Steidtmann
Portions copyright (C) 2010 Peter L Jones
Portions copyright (C) 2010 Torben Hohn
Portions copyright (C) 2010 Nedko Arnaudov
Portions copyright (C) 2011 Christian Schoenebeck
Portions copyright (C) 2013 Joakim Hernberg
Portions copyright (C) 2020-2023 Filipe Coelho
Portions copyright (C) 2025 Gabriel Golfetti

pwasio is licensed under GPL v3+, see LICENSE for more details.