A library for parsing headers of mp3 files, including MPEG header frame data and any Xing/Lame tags.
- Runs on Clojure and ClojureScript
- Parse and report existence of an ID3V2 header
- Skip any ID3V2 tag, if it exists
- Parse and report MPEG header frame data
- Parse and report existence of a Xing tag in the header frame
- Parse and report Xing tag data, if it exists
- Parse and report existence of a Lame tag in the header frame
- Parse and report Lame tag data, if it exists
- Calculate the CRC-16 of the Lame tag data, compare it with the stored CRC-16, and report if it is valid or not
Alpha
- Java 8
- Clojure command line tools
- NodeJS (if using ClojureScript)
Tested with Clojure 1.10.1, ClojureScript 1.10.520
Add the following to :deps in the deps.edn file for the project:
digital-dj-tools/mp3-parser {:git/url "https://github.com/digital-dj-tools/mp3-parser.git"
:sha "515c4838dc0b1eadebe64ec5f0a9ed827cfed54c"}
TODO
Go to the project directory and start a REPL:
clj
Enter the following code:
(require
'[mp3-parser.app :as app])
(def mp3-file
"test-resources/lame-mp3-cbr-stereo-44100khz-192kbps-id3v2.mp3")
(app/parse mp3-file)
The following result should be printed:
{:id3v2-offset 42005
:mpeg-valid? true
:mpeg {:mp3-parser.mpeg/bit-rate 192000
:mp3-parser.mpeg/frame-length 626.0
:mp3-parser.mpeg/has-padding? false
:mp3-parser.mpeg/header [-1 -5 -80 100]
:mp3-parser.mpeg/layer 3
:mp3-parser.mpeg/num-channels 2
:mp3-parser.mpeg/num-samples 1152
:mp3-parser.mpeg/sample-rate 44100
:mp3-parser.mpeg/version 1}
:xing-tag? true
:xing {:mp3-parser.xing/keyword "Info",
:mp3-parser.xing/offset 36}
:lame-tag? true
:lame {:mp3-parser.lame/crc-valid? true
:mp3-parser.lame/encoder "LAME3.99r",
:mp3-parser.lame/revision 0}}
TODO
TODO
clj -Adev:test
clj -Adev:test-cljs
clj -Adev:nrepl-server
Copyright © 2018 Digital DJ Tools
Released under the MIT license.