use lock in compress service

lib/src/compress_video_service.dart

@@ -1,19 +1,18 @@
 import 'dart:async';
+import 'package:synchronized/synchronized.dart';
 import 'package:video_compress/video_compress.dart';
 
 class CompressVideoService {
   static final CompressVideoService instance = CompressVideoService._();
-
+  final _lock = Lock();
   CompressVideoService._();
 
   Future<MediaInfo> compressVideo(String path) async {
-    MediaInfo mediaInfo;
-    while (VideoCompress.isCompressing) {
-      await Future.delayed(Duration(seconds: 1));
-    }
-    mediaInfo = await VideoCompress.compressVideo(
-      path,
-    );
-    return mediaInfo;
+    print('VideoCompress.isCompressing: ${VideoCompress.isCompressing}');
+    return _lock.synchronized(() {
+      return VideoCompress.compressVideo(
+        path,
+      );
+    });
   }
 }

lib/src/message_input.dart

@@ -877,6 +877,11 @@ class MessageInputState extends State<MessageInput> {
                 ),
               ),
             );
+
+            setState(() {
+              _attachments.remove(attachment);
+            });
+            return;
           }
           file = PlatformFile(
             name: file.name,

pubspec.yaml

@@ -42,6 +42,7 @@ dependencies:
   permission_handler: ^5.0.1+1
   transparent_image: ^1.0.0
   ezanimation: ^0.4.1
+  synchronized: ^2.2.0+2
 
 flutter:
   assets: