Crate alsa

Thin but safe wrappers for ALSA.

GitHub repo

Crates.io

This ALSA API wrapper/binding is WIP - the ALSA API is huge, and new functions and structs might be added as requested.

Most functions map 1-to-1 to alsa-lib functions, e g, ctl::CardInfo::get_id() is a wrapper around snd_ctl_card_info_get_id and the alsa-lib documentation can be consulted for additional information.

Enjoy!

Re-exports

• pub use crate::card::Card;
• pub use crate::ctl::Ctl;
• pub use crate::hctl::HCtl;
• pub use crate::pcm::PCM;
• pub use crate::rawmidi::Rawmidi;
• pub use crate::poll::Descriptors as PollDescriptors;
• pub use crate::mixer::Mixer;
• pub use crate::seq::Seq;

Modules

• card
  Sound card enumeration
• ctl
  Control device API
• device_name
  Enumerate devices in the alsa library configuration
• direct
  Functions that bypass alsa-lib and talk directly to the kernel.
• hctl
  HCtl API - for mixer control and jack detection
• mixer
  Mixer API - Simple Mixer API for mixer control
• nix
  Re-exports from the nix crate.
• pcm
  Audio playback and capture
• poll
  Tiny poll ffi
• rawmidi
  MIDI devices I/O and enumeration
• seq
  MIDI sequencer I/O and enumeration

Structs

• Error
  ALSA error
• Output
  snd_output_t wrapper

Enums

• Direction
  Replaces constants ending with PLAYBACK/CAPTURE as well as INPUT/OUTPUT
• Round
  Rounding mode (used in some mixer related calls)
• ValueOr
  Used to restrict hw parameters. In case the submitted value is unavailable, in which direction should one search for available values?

Type Aliases

• Result