kontainer-js/Matroska/EBMLElement/TypeElementId.js

A media file format generator/parser that exposes a React-like API.

'use strict';

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

var _slicedToArray2 = require('babel-runtime/helpers/slicedToArray');

var _slicedToArray3 = _interopRequireDefault(_slicedToArray2);

var _getPrototypeOf = require('babel-runtime/core-js/object/get-prototype-of');

var _getPrototypeOf2 = _interopRequireDefault(_getPrototypeOf);

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');

var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);

var _get2 = require('babel-runtime/helpers/get');

var _get3 = _interopRequireDefault(_get2);

var _inherits2 = require('babel-runtime/helpers/inherits');

var _inherits3 = _interopRequireDefault(_inherits2);

var _Element2 = require('./Element');

var _Element3 = _interopRequireDefault(_Element2);

var _Util = require('../../core/Util');

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var TypeElementId = function (_Element) {
  (0, _inherits3.default)(TypeElementId, _Element);

  function TypeElementId() {
    var _Object$getPrototypeO;

    (0, _classCallCheck3.default)(this, TypeElementId);

    for (var _len = arguments.length, params = Array(_len), _key = 0; _key < _len; _key++) {
      params[_key] = arguments[_key];
    }

    return (0, _possibleConstructorReturn3.default)(this, (_Object$getPrototypeO = (0, _getPrototypeOf2.default)(TypeElementId)).call.apply(_Object$getPrototypeO, [this].concat(params)));
  }

  (0, _createClass3.default)(TypeElementId, [{
    key: 'serialize',
    value: function serialize(buffer) {
      var offset = arguments.length <= 1 || arguments[1] === undefined ? 0 : arguments[1];

      var ElementLookup = require('../ElementLookup').default;
      var elementId = ElementLookup.lookupByName(this.props.value).ELEMENT_ID;

      var base = offset;

      (0, _get3.default)((0, _getPrototypeOf2.default)(TypeElementId.prototype), 'setElementSize', this).call(this, elementId.length);

      base += (0, _get3.default)((0, _getPrototypeOf2.default)(TypeElementId.prototype), 'serialize', this).call(this, buffer, base);

      if (buffer) {
        for (var i = 0; i < elementId.length; i++) {
          buffer[base + i] = elementId[i];
        }
      }
      base += elementId.length;

      return this.size;
    }
  }], [{
    key: 'validate',
    value: function validate(context, props) {
      var maxIdLength = context.maxIdLength;
      if (maxIdLength) {
        var ElementLookup = require('../ElementLookup').default;
        var elementId = ElementLookup.lookupByName(props.value).ELEMENT_ID;
        if (elementId.length > maxIdLength) {
          (0, _Util.throwException)('Element Id(len=' + elementId.length + ') cannot exceed the EBMLMaxIDLength(' + maxIdLength + ')');
        }
      }
    }
  }, {
    key: 'parse',
    value: function parse(buffer) {
      var offset = arguments.length <= 1 || arguments[1] === undefined ? 0 : arguments[1];

      var ElementLookup = require('../ElementLookup').default;

      var base = offset,
          readBytesNum = void 0,
          props = void 0,
          elementId = void 0;

      var _Element$parse = _Element3.default.parse(buffer, base);

      var _Element$parse2 = (0, _slicedToArray3.default)(_Element$parse, 2);

      readBytesNum = _Element$parse2[0];
      props = _Element$parse2[1];

      base += readBytesNum;

      var _Element$readElementI = _Element3.default.readElementId(buffer, base);

      var _Element$readElementI2 = (0, _slicedToArray3.default)(_Element$readElementI, 2);

      readBytesNum = _Element$readElementI2[0];
      elementId = _Element$readElementI2[1];
      ;
      base += readBytesNum;

      props.value = ElementLookup.lookupById(elementId).COMPACT_NAME;

      return [base - offset, props];
    }
  }]);
  return TypeElementId;
}(_Element3.default);

exports.default = TypeElementId;