Audio Buffers Architecture

This directory contains the core audio buffer management.

Overview

Buffers connect the output of one component to the input of the next in an audio pipeline graph. They implement circular (ring) buffer semantics and handle cache coherency for DSP memory.

Architecture Diagram

graph LR
  CompA[Component A / Producer] -->|Write| Buf[Ring Buffer]
  Buf -->|Read| CompB[Component B / Consumer]

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Configuration and Scripts

• CMakeLists.txt: Includes the base core buffer source files (audio_buffer.c, comp_buffer.c). When the CONFIG_PIPELINE_2_0 feature flag is enabled, it additionally compiles ring_buffer.c.
• Topology (.conf): Derived from tools/topology/topology2/include/components/buffer.conf, defining the buffer widget object. Key parameters include size (automatically computed), periods, channels, and caps (capabilities like dai, host, pass, comp). Defaults to UUID 92:4c:54:42:92:8e:41:4e:b6:79:34:51:9f:1c:1d:28.