kontainer-js/IsoBmff/Box/ESDBox.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 _Box = require('./Box');

var _Box2 = _interopRequireDefault(_Box);

var _FullBox2 = require('./FullBox');

var _FullBox3 = _interopRequireDefault(_FullBox2);

var _PropTypes = require('../../core/PropTypes');

var _PropTypes2 = _interopRequireDefault(_PropTypes);

var _Buffer = require('../../core/Buffer');

var _Buffer2 = _interopRequireDefault(_Buffer);

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

var _Reader2 = _interopRequireDefault(_Reader);

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

var ESDBox = function (_FullBox) {
  (0, _inherits3.default)(ESDBox, _FullBox);

  function ESDBox(props) {
    (0, _classCallCheck3.default)(this, ESDBox);
    return (0, _possibleConstructorReturn3.default)(this, (0, _getPrototypeOf2.default)(ESDBox).call(this, ESDBox.COMPACT_NAME, props, props.version, 0));
  }

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

      //console.log('--- ESDBox.serialize enter.');
      var props = this.props;
      var esDescriptor = props.esDescriptor;

      var base = offset;

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

      if (buffer) {
        _Buffer2.default.wrap(buffer).copyFrom(esDescriptor, 0, esDescriptor.length, base);
      }
      base += esDescriptor.length;

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

      //console.log(`--- ESDBox.serialize exit. size=${this.size}`);
      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;

      var _FullBox$parse = _FullBox3.default.parse(buffer, base);

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

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

      base += readBytesNum;
      var toBeRead = props.size - readBytesNum;
      _Reader2.default.ASSERT(buffer, base, toBeRead);
      var buf = _Buffer2.default.wrap(buffer).copy(base, toBeRead);
      base += toBeRead;
      props.esDescriptor = buf.getData();
      return [base - offset, props];
    }
  }]);
  return ESDBox;
}(_FullBox3.default);

exports.default = ESDBox;


ESDBox.COMPACT_NAME = 'esds';

ESDBox.propTypes = {
  version: _PropTypes2.default.number,
  esDescriptor: _PropTypes2.default.any.isRequired
};

ESDBox.defaultProps = {
  version: 0
};

ESDBox.spec = {
  container: ['mp4v', 'mp4a', 'mp4s'],
  quantity: _Box2.default.QUANTITY_EXACTLY_ONE,
  mandatoryList: []
};