This directory contains the Volume control component.

Applies amplitude modifications to the stream, supporting smooth ramping and muting interfaces configurable by the host.

graph LR
  In[Audio Input] --> Mult[Multiplier]
  IPC[IPC Control] -.-> Ramp[Ramp Generator]
  Ramp --> Mult
  Mult --> Out[Audio Output]

• Kconfig: Extensive tuning for the standard volume framework (COMP_VOLUME), selecting underlying algorithms (e.g., COMP_VOLUME_WINDOWS_FADE, COMP_VOLUME_LINEAR_RAMP). Manages sub-settings like querying host telemetry (COMP_PEAK_VOL, PEAK_METER_UPDATE_PERIOD_CHOICE).
• CMakeLists.txt: Extremely versatile linkage resolving general pathways (volume_generic.c), custom optimized builds across HIFI pipelines (volume_hifi3.c, volume_hifi4.c, volume_hifi5.c), and dual-path execution logic (*_with_peakvol.c).
• volume.toml: Registers independent modules PEAKVOL (UUIDREG_STR_VOLUME4) and GAIN (UUIDREG_STR_GAIN), outlining explicit memory mapping parameters via platform-dependent constraints.
• Topology (.conf): Derived from tools/topology/topology2/include/components/volume.conf, configuring a standard pga widget (UUID 7e:67:7e:b7:f4:5f:88:41:af:14:fb:a8:bd:bf:86:82). Outlines parameters for ramp steps interpolation methods and binds specific ALSA interface elements.