Insight of an Audio Driver Based on ALSA

Explore the intricacies of audio drivers based on the Advanced Linux Sound Architecture (ALSA) in this comprehensive 29-minute talk by Chandrasekar Ramakrishnan from Samsung. Delve into fundamental audio concepts, including audio blocks, data formats, and clock systems. Examine the I2C interface for codecs and its layered structure. Gain insights into software architecture, data flow in audio subsystems, and control flow in audio drivers. Analyze software implementation views, sequence diagrams for playback/capture, and mixer operations. Understand block diagrams of mixers, controls, Kcontrol flow, and DAPM controls. Investigate a use case example and explore the Android Audio System and Voice Call Path. This presentation, organized by the Linux Foundation, offers a deep dive into audio driver development for Linux-based systems.

Basics of Audio
Audio Block
12S Data Formats
CLOCK
12C Interface for codec
12C Layers
S/W architecture
Data Flow in Audio Sub-System
Control Flow in Audio Driver
S/W Implementation view of Audio Driver
Sequence Diagram-Playback/Capture
Sequence Diagrams - Mixer OPs
Block Diagram of Mixer
Controls in Mixer
Kcontrol Flow
DAPM controls
Use case Example
Android Audio System
Voice Call Path