https://github.com/shamazmazum/easy-audio

Lossless audio decoder written in common lisp
https://github.com/shamazmazum/easy-audio

ape audio common-lisp flac wav wavpack

Last synced: 17 days ago
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Lossless audio decoder written in common lisp

• Host: GitHub
• URL: https://github.com/shamazmazum/easy-audio
• Owner: shamazmazum
• License: bsd-2-clause
• Created: 2012-05-27T13:15:20.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2024-03-05T18:28:59.000Z (10 months ago)
• Last Synced: 2024-03-06T18:50:54.867Z (10 months ago)
• Topics: ape, audio, common-lisp, flac, wav, wavpack
• Language: Common Lisp
• Homepage:
• Size: 6.17 MB
• Stars: 20
• Watchers: 7
• Forks: 4
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
Easy audio

==========

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Overview

-------

**NB**: 25.04.2022: `easy-audio/utils` system was merged to

`easy-audio/core`. Global nicknames were removed from all packages loaded with

`(asdf:load-system :easy-audio)`. Use full names (like `easy-audio.flac` instead

of `flac`) or local nicknames. The version was bumped to `1.1`.

Easy audio is my small but slowly growing pack of audio decoders. It can

help you decode audio files and also provides easy access to metadata.

It has:

 * FLAC format support. Can decode anything, supports almost all metadata

   blocks.

 * Partial support for WavPack format. Can read and decode non-hybrid

   lossless WavPack data which is the most used, anyway. Support many

   metadata blocks (though they are not as useful as in FLAC).

 * Partial wav container support, can read uncompressed, a-law compressed

   and mu-law compressed audio data.

 * OGG container support, but, unfortunately, without Vorbis decoder.

   Can read FLAC compressed data inside OGG container.

 * APEv2 tags support (currently only in wavpack files).

 * Partial APE support. Only the most recent version (3.99) is supported, also

   mono audio is not supported. Also there is no integrity checks.

It has minimum dependencies (only `flexi-streams` for reading UTF-8 coded

values from metadata) and written entirely in Common Lisp. It contains

unsafe code to achieve maximal performance and assumes that fixnums are

more than 32-bit wide, so I am not sure if it works on some 32-bit

implementations or not.

Documentation

------------

Documentation for `easy-audio` is automatically generated by `codex`. Just

run `(codex:document :easy-audio)`. You can also visit a

[project page](http://shamazmazum.github.io/easy-audio/).