gBPM - Groovy Beats per Minute

A Groovy command-line tool for querying The Echo Nest to obtain the tempo/beats-per-minute for a collection of music files (mp3 and m4a).

Currently, this project relies on a few projects that are not available in Maven Central:

• jEN - the Java API to Echo Nest
• mp3agic - A java library for reading mp3 files and reading / manipulating the ID3 tags (ID3v1 and ID3v2.2 through ID3v2.4)

You will need to mvn install or mvn deploy these artifacts in order to build gBPM.

Usage

$ java -jar target/gbpm-0.1.0-0-SNAPSHOT.jar --help
Usage: <main class> [options] [command] [command options]
  Options:
        --help

       Default: false
    --ten, -t
       Location of the properties file with The Echo Nest keys
       Default: ten.properties
  Commands:
    list-mp3s
      Usage: list-mp3s [options] files

    list-m4as
      Usage: list-m4as [options] files

    print-id3
      Usage: print-id3 [options] files

    print-m4a
      Usage: print-m4a [options] files

    bpm-mp3
      Usage: bpm-mp3 [options] file
        Options:
          --output, -o
             Directory to place mp3 file with updated tags, with paths matching
             the original mp3 file

    bpm-m4a
      Usage: bpm-m4a [options] file
        Options:
          --output, -o
             Directory to place mp3 file with updated tags, with paths matching
             the original mp3 file

    bpm-dir
      Usage: bpm-dir [options] Directories to scan for mp3 & m4a files
        Options:
          --delay, -d
             Delay (in milliseconds between calls to the Echo Nest
             Default: 3500
          --output, -o
             Directory to place mp3 file with updated tags, with paths matching
             the original mp3 file
             Default: output