waveform-playlist-nartj/lib/utils/exportogg.worker.js

Multiple track web audio editor and player with waveform preview

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.encodeOGG = encodeOGG;

var _vorbisEncoderJs = require("vorbis-encoder-js");

// quality between - 0.1 to 1
function encodeOGG(buffer, numberOfChannels, sampleRate, quality, tags) {
  var audioBuffer = {
    getChannelData: function getChannelData(id) {
      return buffer[id];
    }
  };
  var encoder = new _vorbisEncoderJs.encoder(sampleRate, numberOfChannels, quality, tags);
  encoder.encodeFrom(audioBuffer);
  var blob = encoder.finish();
  self.postMessage(blob);
}

self.onmessage = function (e) {
  switch (e.data.command) {
    case 'encodeOGG':
      {
        encodeOGG(e.data.buffer, e.data.numberOfChannels, e.data.sampleRate, e.data.quality, e.data.tags);
        break;
      }

    default:
      {// todo
        //throw new Error('Unknown export worker command');
      }
  }
};