PlayerXTwo (Node mpg123 player)

Install mpg123 command line audio player (Ubuntu/Debian)

sudo apt install mpg123

Install PlayerXTwo to Node

npm i playerxtwo

Usage

const PlayerXTwo = require('playerxtwo');
let myPlayer = new PlayerXTwo();

let volume = 30;

PlayerXTwo.getDevices((devices) => {
  if(devices.get('HDA Intel'))
    myPlayer.create({
      device: devices.get('HDA Intel'),
      volume
    });
  else
    myPlayer.create({ volume });
});


myPlayer.on('play', function (valid) {
  console.log("Audio (Play)");
});
myPlayer.on('stop', function () {
  console.log("Audio (Stop)");
});
myPlayer.on('error', function (err) {
  console.error("Audio (ERROR)", err)
});


myPlayer.on('pause', function () {
  console.log("Audio (Pause)");
});
myPlayer.on('resume', function (data) {
  const name = data && data.name? data.name: "";
  console.log("Audio (Resume): "+ name);
});
myPlayer.on('end', function (data) {
  const name = data && data.name? data.name: "";
  console.log("Audio (End) " + name);
});

myPlayer.on('info', function (data) {
  const trackName = data.StreamTitle;
  console.log("Track info: " + trackName);
});
myPlayer.on('volume', function (data) {
  console.log("Volume set: " + data);
  myPlayer.volume = Math.floor(data);
});

player.play(__dirname+'/'+"someMusic.mp3");

Device Objects

Device objects allow you to select different output sources for playback, provided you are using ALSA. This functionality requires the aplay command, but is entirely optional.

mpg.getDevices(callback) - Gets array of ALSA output devices
devices.get(name) - Finds device in array with given name, otherwise returns null
device.name - Friendly name of device
device.address - ALSA address of device

Player Objects

new new PlayerXTwo(device=null, volume=false) - Create new instance, optionally specifing output device
player.play(file) - Plays audio from a source
player.pause() - Pauses the current track
player.stop() - Stops the current track
player.setVolume(percent) - Sets the volume from 0 to 100 player.pitch(amt) - Adjusts the pitch & speed of the track up or down. The limits seem to be around -0.75 to 0.1.
player.seek(progress) - Seeks through the track with progress from 0 to 1. This fails before the format event has fired.
player.getProgress(callback) - Retrieve current track progress from 0 to 1
player.close() - Kills the mpg123 process
player._cmd(...) - Sends a custom command to the mpg123 CLI. Get possible commands by running mpg123 -R then typing HELP player.next() - Next track

Song Info Variables

Theses variables hold info about the current song, and are safe to read only once the format event has fired.

player.track - Current track name (with extention). Set to null when track completes.
player.file - Full file path, exactly as it was entered into player.play()
player.mpeg - MPEG encoding version
player.sampleRate - Track sample rate
player.channels - Number of channels
player.bitrate - Track bitrate
player.length - Track length in seconds, rounded to the nearest tenth
player.samples - Track length in raw samples