waveform-playlist-nartj/lib/track/loader/XHRLoader.js

Multiple track web audio editor and player with waveform preview

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;

var _classCallCheck2 = _interopRequireDefault(require("@babel/runtime/helpers/classCallCheck"));

var _createClass2 = _interopRequireDefault(require("@babel/runtime/helpers/createClass"));

var _get2 = _interopRequireDefault(require("@babel/runtime/helpers/get"));

var _inherits2 = _interopRequireDefault(require("@babel/runtime/helpers/inherits"));

var _possibleConstructorReturn2 = _interopRequireDefault(require("@babel/runtime/helpers/possibleConstructorReturn"));

var _getPrototypeOf2 = _interopRequireDefault(require("@babel/runtime/helpers/getPrototypeOf"));

var _Loader2 = _interopRequireDefault(require("./Loader"));

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = (0, _getPrototypeOf2["default"])(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = (0, _getPrototypeOf2["default"])(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return (0, _possibleConstructorReturn2["default"])(this, result); }; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }

var _default = /*#__PURE__*/function (_Loader) {
  (0, _inherits2["default"])(_default, _Loader);

  var _super = _createSuper(_default);

  function _default() {
    (0, _classCallCheck2["default"])(this, _default);
    return _super.apply(this, arguments);
  }

  (0, _createClass2["default"])(_default, [{
    key: "load",

    /**
     * Loads an audio file via XHR.
     */
    value: function load() {
      var _this = this;

      return new Promise(function (resolve, reject) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', _this.src, true);
        xhr.responseType = 'arraybuffer';
        xhr.send();
        xhr.addEventListener('progress', function (e) {
          (0, _get2["default"])((0, _getPrototypeOf2["default"])(_default.prototype), "fileProgress", _this).call(_this, e);
        });
        xhr.addEventListener('load', function (e) {
          var decoderPromise = (0, _get2["default"])((0, _getPrototypeOf2["default"])(_default.prototype), "fileLoad", _this).call(_this, e);
          decoderPromise.then(function (audioBuffer) {
            resolve(audioBuffer);
          })["catch"](reject);
        });
        xhr.addEventListener('error', function () {
          reject(Error("Track ".concat(_this.src, " failed to load")));
        });
      });
    }
  }]);
  return _default;
}(_Loader2["default"]);

exports["default"] = _default;