Source: lib/device/webkit_stb.js

  1. /*! @license
  2.  * Shaka Player
  3.  * Copyright 2025 Google LLC
  4.  * SPDX-License-Identifier: Apache-2.0
  5.  */
  7. goog.provide('shaka.device.WebKitSTB');
  9. goog.require('shaka.device.AbstractDevice');
  10. goog.require('shaka.device.DeviceFactory');
  11. goog.require('shaka.device.IDevice');
  12. goog.require('shaka.util.Lazy');
  15. /**
  16.  * @final
  17.  */
  18. shaka.device.WebKitSTB = class extends shaka.device.AbstractDevice {
  19.   constructor() {
  20.     super();
  22.     /**
  23.      * SkyQ STB
  24.      *
  25.      * @private {!shaka.util.Lazy<boolean>}
  26.      */
  27.     this.isSkyQ_ = new shaka.util.Lazy(() => {
  28.       return navigator.userAgent.includes('DT_STB_BCM');
  29.     });
  31.     /** @private {!shaka.util.Lazy<?number>} */
  32.     this.version_ = new shaka.util.Lazy(() => {
  33.       if (navigator.userAgent.includes('DT_STB_BCM')) {
  34.         return 11;
  35.       }
  36.       // This works for iOS Safari and desktop Safari, which contain something
  37.       // like "Version/13.0" indicating the major Safari or iOS version.
  38.       let match = navigator.userAgent.match(/Version\/(\d+)/);
  39.       if (match) {
  40.         return parseInt(match[1], /* base= */ 10);
  41.       }
  43.       // This works for all other browsers on iOS, which contain something like
  44.       // "OS 13_3" indicating the major & minor iOS version.
  45.       match = navigator.userAgent.match(/OS (\d+)(?:_\d+)?/);
  46.       if (match) {
  47.         return parseInt(match[1], /* base= */ 10);
  48.       }
  50.       return null;
  51.     });
  52.   }
  54.   /**
  55.    * @override
  56.    */
  57.   getVersion() {
  58.     return this.version_.value();
  59.   }
  61.   /**
  62.    * @override
  63.    */
  64.   getDeviceName() {
  65.     return 'WebKit STB';
  66.   }
  68.   /**
  69.    * @override
  70.    */
  71.   getDeviceType() {
  72.     return shaka.device.IDevice.DeviceType.TV;
  73.   }
  75.   /**
  76.    * @override
  77.    */
  78.   getBrowserEngine() {
  79.     return shaka.device.IDevice.BrowserEngine.WEBKIT;
  80.   }
  82.   /**
  83.    * @override
  84.    */
  85.   supportsMediaCapabilities() {
  86.     return false;
  87.   }
  89.   /**
  90.    * @override
  91.    */
  92.   supportsSequenceMode() {
  93.     // See: https://bugs.webkit.org/show_bug.cgi?id=210341
  94.     const version = this.version_.value();
  95.     return version !== null ? version >= 15 : true;
  96.   }
  98.   /**
  99.    * @override
  100.    */
  101.   detectMaxHardwareResolution() {
  102.     const maxResolution = {
  103.       width: window.screen.width * window.devicePixelRatio,
  104.       height: window.screen.height * window.devicePixelRatio,
  105.     };
  106.     return Promise.resolve(maxResolution);
  107.   }
  109.   /**
  110.    * @override
  111.    */
  112.   supportsEncryptionSchemePolyfill() {
  113.     return !this.isSkyQ_.value();
  114.   }
  116.   /**
  117.    * @return {boolean}
  118.    * @private
  119.    */
  120.   static isWebkitSTB_() {
  121.     if (navigator.userAgent.includes('DT_STB_BCM') ||
  122.         navigator.userAgent.includes('DT_STB_BCM')) {
  123.       return true;
  124.     }
  125.     if (!(navigator.vendor || '').includes('Apple')) {
  126.       return false;
  127.     }
  128.     if (/(?:iPhone|iPad|iPod)/.test(navigator.userAgent) ||
  129.         navigator.maxTouchPoints > 1) {
  130.       return false;
  131.     }
  132.     if (navigator.userAgentData && navigator.userAgentData.platform &&
  133.         navigator.userAgentData.platform.toLowerCase() == 'macos') {
  134.       return false;
  135.     } else if (navigator.platform &&
  136.         navigator.platform.toLowerCase().includes('mac')) {
  137.       return false;
  138.     }
  139.     return true;
  140.   }
  141. };
  143. if (shaka.device.WebKitSTB.isWebkitSTB_()) {
  144.   shaka.device.DeviceFactory.registerDeviceFactory(
  145.       () => new shaka.device.WebKitSTB());
  146. }