kontainer-js/IsoBmff/Box/FullBox.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 _Box2 = require('./Box');

var _Box3 = _interopRequireDefault(_Box2);

var _Writer = require('../../core/Writer');

var _Writer2 = _interopRequireDefault(_Writer);

var _Reader = require('../../core/Reader');

var _Reader2 = _interopRequireDefault(_Reader);

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

var FullBox = function (_Box) {
  (0, _inherits3.default)(FullBox, _Box);

  function FullBox(type, props, version, flags) {
    (0, _classCallCheck3.default)(this, FullBox);

    var _this = (0, _possibleConstructorReturn3.default)(this, (0, _getPrototypeOf2.default)(FullBox).call(this, type, props));

    _this.version = version;
    _this.flags = flags;
    return _this;
  }

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

      //console.log('--- FullBox.serialize enter.');
      var version = this.version;
      var flags = this.flags;

      var base = offset;

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

      // version is unsigned int(8)
      if (version > 255) {
        console.warn('IsoBmff.FullBox.serialize: the version does not fit within unsigned int (8).');
      }

      base += _Writer2.default.writeNumber(version, buffer, base, 1);

      // flags is bit(24)
      if (flags >>> 24) {
        console.warn('IsoBmff.FullBox.serialize: the flags does not fit within bit(24).');
      }

      base += _Writer2.default.writeNumber(flags, buffer, base, 3);

      (0, _get3.default)((0, _getPrototypeOf2.default)(FullBox.prototype), 'setSize', this).call(this, base - offset, buffer, offset);

      //console.log('--- FullBox.serialize exit.');
      return this.size;
    }
  }], [{
    key: 'parse',
    value: function parse(buffer) {
      var offset = arguments.length <= 1 || arguments[1] === undefined ? 0 : arguments[1];

      var base = offset,
          readBytesNum = void 0,
          props = void 0,
          version = void 0,
          flags = void 0;

      var _Box$parse = _Box3.default.parse(buffer, base);

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

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

      base += readBytesNum;

      var _Reader$readNumber = _Reader2.default.readNumber(buffer, base, 1);

      var _Reader$readNumber2 = (0, _slicedToArray3.default)(_Reader$readNumber, 2);

      readBytesNum = _Reader$readNumber2[0];
      version = _Reader$readNumber2[1];

      base += readBytesNum;

      var _Reader$readNumber3 = _Reader2.default.readNumber(buffer, base, 3);

      var _Reader$readNumber4 = (0, _slicedToArray3.default)(_Reader$readNumber3, 2);

      readBytesNum = _Reader$readNumber4[0];
      flags = _Reader$readNumber4[1];

      base += readBytesNum;

      props.version = version;
      props.flags = flags;

      return [base - offset, props];
    }
  }, {
    key: 'date2sec',
    value: function date2sec(date) {
      var SECONDS_BTW_1904_1970 = 2082844800;
      return (date.getTime() / 1000 | 0) + SECONDS_BTW_1904_1970;
    }
  }, {
    key: 'sec2date',
    value: function sec2date(sec) {
      var SECONDS_BTW_1904_1970 = 2082844800;
      return new Date(Math.max(0, sec - SECONDS_BTW_1904_1970) * 1000);
    }
  }]);
  return FullBox;
}(_Box3.default);

exports.default = FullBox;