kontainer-js/IsoBmff/Box/VisualSampleEntry.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 _SampleEntry2 = require('./SampleEntry');

var _SampleEntry3 = _interopRequireDefault(_SampleEntry2);

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 VisualSampleEntry = function (_SampleEntry) {
  (0, _inherits3.default)(VisualSampleEntry, _SampleEntry);

  function VisualSampleEntry(type, props) {
    (0, _classCallCheck3.default)(this, VisualSampleEntry);
    return (0, _possibleConstructorReturn3.default)(this, (0, _getPrototypeOf2.default)(VisualSampleEntry).call(this, type, props, props.dataReferenceIndex));
  }

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

      //console.log('--- VisualSampleEntry.serialize enter.');
      var props = this.props;
      var width = props.width;
      var height = props.height;
      var horizResolution = props.horizResolution;
      var vertResolution = props.vertResolution;
      var frameCount = props.frameCount;
      var compressorName = props.compressorName;
      var depth = props.depth;

      var base = offset;

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

      base += _Writer2.default.writeNumber(0, buffer, base, 16); // reserved (32)[4]
      base += _Writer2.default.writeNumber(width, buffer, base, 2);
      base += _Writer2.default.writeNumber(height, buffer, base, 2);
      base += _Writer2.default.writeFixedNumber(horizResolution, buffer, base, 4);
      base += _Writer2.default.writeFixedNumber(vertResolution, buffer, base, 4);
      base += _Writer2.default.writeNumber(0, buffer, base, 4); // reserved (32)
      base += _Writer2.default.writeNumber(frameCount, buffer, base, 2);
      base += _Writer2.default.writeNumber(Math.min(compressorName.length, 31), buffer, base, 1);
      base += _Writer2.default.writeString(compressorName, buffer, base, 31);
      base += _Writer2.default.writeNumber(depth, buffer, base, 2);
      base += _Writer2.default.writeNumber(-1, buffer, base, 2); // pre_defined=-1 (16)

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

      //console.log('--- VisualSampleEntry.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,
          width = void 0,
          height = void 0,
          horizResolution = void 0,
          vertResolution = void 0,
          frameCount = void 0,
          compressorName = void 0,
          compressorNameLength = void 0,
          depth = void 0;

      var _SampleEntry$parse = _SampleEntry3.default.parse(buffer, base);

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

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

      base += readBytesNum;

      base += 16; // skip reserved

      var _Reader$readNumber = _Reader2.default.readNumber(buffer, base, 2);

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

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

      base += readBytesNum;

      var _Reader$readNumber3 = _Reader2.default.readNumber(buffer, base, 2);

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

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

      base += readBytesNum;

      var _Reader$readFixedNumb = _Reader2.default.readFixedNumber(buffer, base, 4);

      var _Reader$readFixedNumb2 = (0, _slicedToArray3.default)(_Reader$readFixedNumb, 2);

      readBytesNum = _Reader$readFixedNumb2[0];
      horizResolution = _Reader$readFixedNumb2[1];

      base += readBytesNum;

      var _Reader$readFixedNumb3 = _Reader2.default.readFixedNumber(buffer, base, 4);

      var _Reader$readFixedNumb4 = (0, _slicedToArray3.default)(_Reader$readFixedNumb3, 2);

      readBytesNum = _Reader$readFixedNumb4[0];
      vertResolution = _Reader$readFixedNumb4[1];

      base += readBytesNum;

      base += 4; // skip reserved

      var _Reader$readNumber5 = _Reader2.default.readNumber(buffer, base, 2);

      var _Reader$readNumber6 = (0, _slicedToArray3.default)(_Reader$readNumber5, 2);

      readBytesNum = _Reader$readNumber6[0];
      frameCount = _Reader$readNumber6[1];

      base += readBytesNum;

      var _Reader$readNumber7 = _Reader2.default.readNumber(buffer, base, 1);

      var _Reader$readNumber8 = (0, _slicedToArray3.default)(_Reader$readNumber7, 2);

      readBytesNum = _Reader$readNumber8[0];
      compressorNameLength = _Reader$readNumber8[1];

      base += readBytesNum;

      var _Reader$readString = _Reader2.default.readString(buffer, base, Math.min(compressorNameLength, 31));

      var _Reader$readString2 = (0, _slicedToArray3.default)(_Reader$readString, 2);

      readBytesNum = _Reader$readString2[0];
      compressorName = _Reader$readString2[1];

      base += 31;

      var _Reader$readNumber9 = _Reader2.default.readNumber(buffer, base, 2);

      var _Reader$readNumber10 = (0, _slicedToArray3.default)(_Reader$readNumber9, 2);

      readBytesNum = _Reader$readNumber10[0];
      depth = _Reader$readNumber10[1];

      base += readBytesNum;

      base += 2; // skip pre_defined

      props.width = width;
      props.height = height;
      props.horizResolution = horizResolution;
      props.vertResolution = vertResolution;
      props.frameCount = frameCount;
      props.compressorName = compressorName;
      props.depth = depth;

      return [base - offset, props];
    }
  }]);
  return VisualSampleEntry;
}(_SampleEntry3.default);

exports.default = VisualSampleEntry;