fix(virtual-backgrounds) add segmentation model license information

Fixes: https://github.com/jitsi/jitsi-meet/issues/8792

ios/app/src/AppDelegate.m

@@ -35,6 +35,7 @@
 
     jitsiMeet.defaultConferenceOptions = [JitsiMeetConferenceOptions fromBuilder:^(JitsiMeetConferenceOptionsBuilder *builder) {
         [builder setFeatureFlag:@"resolution" withValue:@(360)];
+        [builder setFeatureFlag:@"ios.screensharing.enabled" withBoolean:YES];
         builder.serverURL = [NSURL URLWithString:@"https://meet.jit.si"];
         builder.welcomePageEnabled = YES;
 

package-lock.json

@@ -10513,8 +10513,8 @@
       }
     },
     "lib-jitsi-meet": {
-      "version": "github:jitsi/lib-jitsi-meet#3cd9d31b9719e8cdf0cd0b43ff1afe608dd698c8",
-      "from": "github:jitsi/lib-jitsi-meet#3cd9d31b9719e8cdf0cd0b43ff1afe608dd698c8",
+      "version": "github:jitsi/lib-jitsi-meet#cd53f249c532fdceb296c37facc4acc846677a9e",
+      "from": "github:jitsi/lib-jitsi-meet#cd53f249c532fdceb296c37facc4acc846677a9e",
       "requires": {
         "@jitsi/js-utils": "1.0.2",
         "@jitsi/sdp-interop": "1.0.3",

package.json

@@ -54,7 +54,7 @@
     "jquery-i18next": "1.2.1",
     "js-md5": "0.6.1",
     "jwt-decode": "2.2.0",
-    "lib-jitsi-meet": "github:jitsi/lib-jitsi-meet#3cd9d31b9719e8cdf0cd0b43ff1afe608dd698c8",
+    "lib-jitsi-meet": "github:jitsi/lib-jitsi-meet#cd53f249c532fdceb296c37facc4acc846677a9e",
     "libflacjs": "github:mmig/libflac.js#93d37e7f811f01cf7d8b6a603e38bd3c3810907d",
     "lodash": "4.17.21",
     "moment": "2.29.1",

react/features/base/flags/constants.js

@@ -86,6 +86,12 @@ export const INVITE_ENABLED = 'invite.enabled';
  */
 export const IOS_RECORDING_ENABLED = 'ios.recording.enabled';
 
+/**
+ * Flag indicating if screen sharing should be enabled in iOS.
+ * Default: disabled (false).
+ */
+export const IOS_SCREENSHARING_ENABLED = 'ios.screensharing.enabled';
+
 /**
  * Flag indicating if kickout is enabled.
  * Default: enabled (true).

react/features/stream-effects/virtual-background/vendor/README.md

@@ -21,4 +21,16 @@ How to test on SIMD:
 More details:
 - [WebAssembly](https://webassembly.org/)
 - [WebAssembly SIMD](https://github.com/WebAssembly/simd)
-- [TFLite](https://blog.tensorflow.org/2020/07/accelerating-tensorflow-lite-xnnpack-integration.html)
+- [TFLite](https://blog.tensorflow.org/2020/07/accelerating-tensorflow-lite-xnnpack-integration.html)
+
+## LICENSE
+
+The mdoels vendored here were downloaded early January (they were available as early as the 4th), before Google switched the license away from Apache 2. Thus we understand they are not covered by the new license which according to the [model card](https://drive.google.com/file/d/1lnP1bRi9CSqQQXUHa13159vLELYDgDu0/view) dates from the 21st of January.
+
+We are not lawyers so do get legal advise if in doubt.
+
+References:
+
+- Model license discussion: https://github.com/tensorflow/tfjs/issues/4177
+- Current vendored model is discovered: https://github.com/tensorflow/tfjs/issues/4177#issuecomment-753934631
+- License change is noticed: https://github.com/tensorflow/tfjs/issues/4177#issuecomment-771536641

react/features/toolbox/components/native/ScreenSharingIosButton.js

@@ -4,6 +4,7 @@ import React from 'react';
 import { findNodeHandle, NativeModules, Platform } from 'react-native';
 import { ScreenCapturePickerView } from 'react-native-webrtc';
 
+import { getFeatureFlag, IOS_SCREENSHARING_ENABLED } from '../../../base/flags';
 import { translate } from '../../../base/i18n';
 import { IconShareDesktop } from '../../../base/icons';
 import { connect } from '../../../base/redux';
@@ -121,11 +122,13 @@ class ScreenSharingIosButton extends AbstractButton<Props, *> {
  * }}
  */
 function _mapStateToProps(state): Object {
+    const enabled = getFeatureFlag(state, IOS_SCREENSHARING_ENABLED, false);
+
     return {
         _screensharing: isLocalVideoTrackDesktop(state),
 
         // TODO: this should work on iOS 12 too, but our trick to show the picker doesn't work.
-        visible: Platform.OS === 'ios' && Platform.Version.split('.')[0] >= 14
+        visible: enabled && Platform.OS === 'ios' && Platform.Version.split('.')[0] >= 14
     };
 }