Can interrupt local streaming

lib/ui/screens/call_screen.dart

@@ -20,6 +20,8 @@ import 'package:flutter_webrtc/webrtc.dart';
 ///
 /// @author Pierre Hubert
 
+enum _PopupMenuOption { STOP_STREAMING }
+
 class CallScreen extends StatefulWidget {
   final int convID;
 
@@ -345,6 +347,15 @@ class _CallScreenState extends SafeState<CallScreen> {
     });
   }
 
+  /// Handles menu selection
+  void _handleSelectedMenuOption(_PopupMenuOption option) {
+    switch (option) {
+      case _PopupMenuOption.STOP_STREAMING:
+        _stopStreaming();
+        break;
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -473,6 +484,20 @@ class _CallScreenState extends SafeState<CallScreen> {
                 : Icons.videocam_off),
             onPressed: () => _toggleStreaming(true),
           ),
+
+          // Interrupt local streaming
+          Expanded(
+            child: PopupMenuButton<_PopupMenuOption>(
+              itemBuilder: (c) => [
+                // Interrupt streaming
+                PopupMenuItem(
+                    child: Text(tr("Stop streaming")),
+                    value: _PopupMenuOption.STOP_STREAMING)
+              ],
+              icon: Icon(Icons.menu),
+              onSelected: (d) => _handleSelectedMenuOption(d),
+            ),
+          )
         ],
       ),
     );