kontainer-js/Matroska/EBMLElement/TrackType.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 _Component = require('../../core/Component');

var _Component2 = _interopRequireDefault(_Component);

var _TypeUInt2 = require('./TypeUInt');

var _TypeUInt3 = _interopRequireDefault(_TypeUInt2);

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

var _PropTypes2 = _interopRequireDefault(_PropTypes);

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

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

function encodeValue(value) {
  switch (value) {
    case 'video':
      return 0x01;
    case 'audio':
      return 0x02;
    case 'complex':
      return 0x03;
    case 'logo':
      return 0x10;
    case 'subtitle':
      return 0x11;
    case 'buttons':
      return 0x12;
    case 'control':
      return 0x20;
  }
  (0, _Util.throwException)('Unknow track type: (' + value + ')');
}

function decodeValue(value) {
  switch (value) {
    case 0x01:
      return 'video';
    case 0x02:
      return 'audio';
    case 0x03:
      return 'complex';
    case 0x10:
      return 'logo';
    case 0x11:
      return 'subtitle';
    case 0x12:
      return 'buttons';
    case 0x20:
      return 'control';
  }
  (0, _Util.throwException)('Unknow track type: (' + value + ')');
}

var TrackType = function (_TypeUInt) {
  (0, _inherits3.default)(TrackType, _TypeUInt);

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

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

      var value = this.props.kind;

      var base = offset;

      this.props.value = encodeValue(value);
      base += (0, _get3.default)((0, _getPrototypeOf2.default)(TrackType.prototype), 'serialize', this).call(this, buffer, base);

      return base - offset;
    }
  }], [{
    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 _TypeUInt$parse = _TypeUInt3.default.parse(buffer, base);

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

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

      base += readBytesNum;

      props.kind = decodeValue(props.value);

      return [base - offset, props];
    }
  }]);
  return TrackType;
}(_TypeUInt3.default);

exports.default = TrackType;


TrackType.COMPACT_NAME = 'TrackType';

TrackType.ELEMENT_ID = [0x83];

TrackType.propTypes = {
  kind: _PropTypes2.default.oneOf(['video', 'audio', 'complex', 'logo', 'subtitle', 'buttons', 'control']).isRequired
};

TrackType.spec = {
  container: 'TrackEntry',
  quantity: _Component2.default.QUANTITY_EXACTLY_ONE,
  mandatoryList: []
};