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llext
llext
 
 
tune
tune
 
 
CMakeLists.txt
CMakeLists.txt
 
 
Kconfig
Kconfig
 
 
README.md
README.md
 
 
selector.c
selector.c
 
 
selector.toml
selector.toml
 
 
selector_generic.c
selector_generic.c
 
 

README.md

Channel Selector Architecture

This directory contains the Channel Selector component.

Overview

Given a multi-channel stream (e.g., 8-channel microphone array), the channel selector component isolates specific channels (e.g., channels 1 and 2) to pass forward while dropping the rest.

Configuration and Scripts

  • Kconfig: Enables the selector component (COMP_SEL).
  • CMakeLists.txt: Compiles selector.c and selector_generic.c, and natively supports Zephyr environment modules (llext).
  • selector.toml: Includes topology parameters under MICSEL, using UUID UUIDREG_STR_SELECTOR4 and limits up to 8 instances, with distinct mod_cfg limits depending on chipset architectures (Meteor Lake, Lunar Lake, ACE).
  • Topology (.conf): Derived from tools/topology/topology2/include/components/micsel.conf, which defines a micsel widget of type effect (UUID c1:92:fe:32:17:1e:c2:4f:97:58:c7:f3:54:2e:98:0a).