Embedded Audio Policies Made Easy with WirePlumber
summary
WirePlumber integrates a role-based policy into PipeWire (merged since 0.54, current 0.56) that maps application media.role to hardware via loopbacks and configurable targets, implements arbitration with three actions mix/cork/duck, and lets Lua scripting and rules override roles for tricky clients like browsers. It demonstrates inserting a software DSP node via Smart filters before ALSA sinks, supports both software and hardware-DSP arbitration, and reports as working in automotive-grade Linux.
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chapters (8)
- 0:00Introduction
- 2:30Use case based policy
- 11:32WirePlumber as session manager
- 14:47Loopbacks in PipeWire
- 22:41Arbitration in WirePlumber
- 31:04Policy integration in 0.54+
- 32:54Next steps
- 40:43Q&A
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