win10-find-all-video-capture-devices/prebuilt/windows.devices.enumeration/lib/main.js

Find all video capture devices on Windows 10.

// Copyright (c) Microsoft Corporation
// All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the ""License""); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED ON AN  *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR NON-INFRINGEMENT.
//
// See the Apache Version 2.0 License for specific language governing permissions and limitations under the License.
var path = require('path')
var fs = require('fs')

var npmScope = ''

try {
  // this little trick makes node.js Tools for VS load intellisense for the module
  if (fs.existsSync(path.join(__dirname, 'NodeRT_Windows_Devices_Enumeration.d.js)'))) {
    module.exports = require('./NodeRT_Windows_Devices_Enumeration.d.js')
  }
  module.exports = require('../build/Release/binding.node')
} catch (e) {
  throw e
}

var externalReferencedNamespaces = ['Windows.UI.Popups', 'Windows.Storage.Streams', 'Windows.ApplicationModel.Background', 'Windows.Foundation']

if (externalReferencedNamespaces.length > 0) {
  var namespaceRegistry = global.__winRtNamespaces__

  if (!namespaceRegistry) {
    namespaceRegistry = {}
    Object.defineProperty(global, '__winRtNamespaces__', {
      configurable: true,
      writable: false,
      enumerable: false,
      value: namespaceRegistry
    })
  }

  function requireNamespace (namespace) {
    var moduleName = namespace.toLowerCase()
    if (npmScope) {
      moduleName = '@' + npmScope + '/' + moduleName
    }

    var m = require(moduleName)
    delete namespaceRegistry[namespace]
    namespaceRegistry[namespace] = m
    return m
  }

  for (var i in externalReferencedNamespaces) {
    var ns = externalReferencedNamespaces[i]
    if (!namespaceRegistry.hasOwnProperty(ns)) {
      Object.defineProperty(namespaceRegistry, ns, {
        configurable: true,
        enumerable: true,
        get: requireNamespace.bind(null, ns)
      })
    }
  }
}