@kibeo/loaders.gl-textures/dist/es5/lib/parsers/basis-module-loader.js

Framework-independent loaders for compressed and super compressed (basis) textures

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

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

var _regenerator = _interopRequireDefault(require("@babel/runtime/regenerator"));

var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));

var _asyncToGenerator2 = _interopRequireDefault(require("@babel/runtime/helpers/asyncToGenerator"));

var _loaders = require("@kibeo/loaders.gl-worker-utils");

var loadBasisPromise;

function loadBasisModule(_x) {
  return _loadBasisModule.apply(this, arguments);
}

function _loadBasisModule() {
  _loadBasisModule = (0, _asyncToGenerator2.default)(_regenerator.default.mark(function _callee(options) {
    var modules;
    return _regenerator.default.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            modules = options.modules || {};

            if (!modules.basis) {
              _context.next = 3;
              break;
            }

            return _context.abrupt("return", modules.basis);

          case 3:
            loadBasisPromise = loadBasisPromise || loadBasis(options);
            _context.next = 6;
            return loadBasisPromise;

          case 6:
            return _context.abrupt("return", _context.sent);

          case 7:
          case "end":
            return _context.stop();
        }
      }
    }, _callee);
  }));
  return _loadBasisModule.apply(this, arguments);
}

function loadBasis(_x2) {
  return _loadBasis.apply(this, arguments);
}

function _loadBasis() {
  _loadBasis = (0, _asyncToGenerator2.default)(_regenerator.default.mark(function _callee2(options) {
    var BASIS, wasmBinary, _yield$Promise$all, _yield$Promise$all2;

    return _regenerator.default.wrap(function _callee2$(_context2) {
      while (1) {
        switch (_context2.prev = _context2.next) {
          case 0:
            BASIS = null;
            wasmBinary = null;
            _context2.t0 = Promise;
            _context2.next = 5;
            return (0, _loaders.loadLibrary)('basis_transcoder.js', 'textures', options);

          case 5:
            _context2.t1 = _context2.sent;
            _context2.next = 8;
            return (0, _loaders.loadLibrary)('basis_transcoder.wasm', 'textures', options);

          case 8:
            _context2.t2 = _context2.sent;
            _context2.t3 = [_context2.t1, _context2.t2];
            _context2.next = 12;
            return _context2.t0.all.call(_context2.t0, _context2.t3);

          case 12:
            _yield$Promise$all = _context2.sent;
            _yield$Promise$all2 = (0, _slicedToArray2.default)(_yield$Promise$all, 2);
            BASIS = _yield$Promise$all2[0];
            wasmBinary = _yield$Promise$all2[1];
            BASIS = BASIS || globalThis.BASIS;
            _context2.next = 19;
            return initializeBasisModule(BASIS, wasmBinary);

          case 19:
            return _context2.abrupt("return", _context2.sent);

          case 20:
          case "end":
            return _context2.stop();
        }
      }
    }, _callee2);
  }));
  return _loadBasis.apply(this, arguments);
}

function initializeBasisModule(BasisModule, wasmBinary) {
  var options = {};

  if (wasmBinary) {
    options.wasmBinary = wasmBinary;
  }

  return new Promise(function (resolve) {
    BasisModule(options).then(function (module) {
      var BasisFile = module.BasisFile,
          initializeBasis = module.initializeBasis;
      initializeBasis();
      resolve({
        BasisFile: BasisFile
      });
    });
  });
}
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