Embedded Audio Policies Made Easy with WirePlumber
summary
WirePlumber now implements a concrete role-based policy in PipeWire (merged into 0.54 → 0.56) that maps streams to use cases, maps use cases to devices or DSP channels, and performs arbitration with loopbacks and small Lua event scripts. It supports practical actions — mix cork and duck — and inserts software DSP nodes via Smart Filters for EQ/volume. Hardware DSP control remains unabstracted so cork notifications and full DSP management are unfinished but the implementation already works in automotive and desktop builds.
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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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