xgplayer-dash/es/media/task.js

xgplayer plugin for MPEG-DASH

import { inherits as _inherits, createSuper as _createSuper, createClass as _createClass, classCallCheck as _classCallCheck, possibleConstructorReturn as _possibleConstructorReturn, assertThisInitialized as _assertThisInitialized } from "../_virtual/_rollupPluginBabelHelpers.js";
import EventEmitter from "eventemitter3";
var Task = /* @__PURE__ */ function(_EventEmitter) {
  _inherits(Task2, _EventEmitter);
  var _super = _createSuper(Task2);
  function Task2(url, _callback, range) {
    var _this;
    _classCallCheck(this, Task2);
    _this = _super.call(this);
    _this.url = url;
    _this.on = false;
    if (Task2.queue.some(function(item) {
      return item.url === url;
    })) {
      return _possibleConstructorReturn(_this);
    }
    var xhr = new XMLHttpRequest();
    xhr.target = _assertThisInitialized(_this);
    xhr.responseType = "arraybuffer";
    xhr.open("get", url);
    if (range) {
      _this.range = range;
      _this.id = range.join("-");
      xhr.setRequestHeader("Range", "bytes=".concat(range.join("-")));
    }
    xhr.onload = function() {
      if (xhr.status === 200 || xhr.status === 206) {
        if (_callback && _callback instanceof Function) {
          _callback(xhr.response);
        }
      } else if (xhr.status === 404) {
        if (_callback && _callback instanceof Function) {
          _callback("Not Found");
        }
      }
      xhr.target.remove();
    };
    xhr.onerror = function() {
      xhr.target.remove();
    };
    xhr.onabort = function() {
      xhr.target.remove();
    };
    _this.xhr = xhr;
    Task2.queue.push(_assertThisInitialized(_this));
    _this.update();
    return _this;
  }
  _createClass(Task2, [{
    key: "cancel",
    value: function cancel() {
      this.xhr.abort();
    }
  }, {
    key: "remove",
    value: function remove() {
      var _this2 = this;
      Task2.queue.filter(function(item, idx) {
        if (item.url === _this2.url) {
          Task2.queue.splice(idx, 1);
          return true;
        } else {
          return false;
        }
      });
      this.update();
    }
  }, {
    key: "update",
    value: function update() {
      var Queue = Task2.queue;
      var sended = Queue.filter(function(item) {
        return item.on;
      });
      var wait = Queue.filter(function(item) {
        return !item.on;
      });
      var max = Task2.limit - sended.length;
      wait.forEach(function(item, idx) {
        if (idx < max) {
          item.run();
        }
      });
    }
  }, {
    key: "run",
    value: function run() {
      if (this.xhr.readyState === 1) {
        this.on = true;
        this.xhr.send();
      } else {
        this.remove();
      }
    }
  }], [{
    key: "clear",
    value: function clear() {
      Task2.queue.forEach(function(item) {
        if (item.on) {
          item.cancel();
        }
      });
      Task2.queue.length = 0;
    }
  }]);
  return Task2;
}(EventEmitter);
Task.queue = [];
Task.limit = 2;
window.Task = Task;
export { Task as default };