fix: fix hot restart not work

Author: littleGnAl

lib/src/impl/agora_rtc_engine_impl.dart

@@ -1,6 +1,7 @@
 import 'dart:async';
 import 'dart:convert';
 import 'dart:typed_data' show Uint8List;
+import 'dart:ffi' as ffi;
 
 import 'package:agora_rtc_engine/src/agora_base.dart';
 import 'package:agora_rtc_engine/src/agora_media_base.dart';
@@ -211,6 +212,23 @@ class RtcEngineImpl extends rtc_engine_ex_binding.RtcEngineExImpl
 
     await _globalVideoViewController
         .attachVideoFrameBufferManager(irisMethodChannel.getNativeHandle());
+
+    irisMethodChannel.addHotRestartListener(_hotRestartListener);
+  }
+
+  void _hotRestartListener(Object? message) {
+    assert(() {
+      // Free `IrisVideoFrameBufferManager` when hot restart
+      final nativeBindingDelegate = IrisApiEngineNativeBindingDelegateProvider()
+              .provideNativeBindingDelegate()
+          as NativeIrisApiEngineBindingsDelegate;
+      nativeBindingDelegate.initialize();
+      nativeBindingDelegate.binding.FreeIrisVideoFrameBufferManager(
+          ffi.Pointer.fromAddress(
+              _globalVideoViewController.videoFrameBufferManagerIntPtr));
+
+      return true;
+    }());
   }
 
   @override
@@ -262,7 +280,7 @@ class RtcEngineImpl extends rtc_engine_ex_binding.RtcEngineExImpl
 
     await super.release(sync: sync);
 
-    // await apiCaller.disposeAsync();
+    irisMethodChannel.removeHotRestartListener(_hotRestartListener);
 
     await irisMethodChannel.dispose();
     _instance = null;

lib/src/impl/native_iris_api_engine_binding_delegate.dart

@@ -27,6 +27,7 @@ ffi.DynamicLibrary _loadLib() {
 
 class NativeIrisApiEngineBindingsDelegate extends NativeBindingDelegate {
   late final bindings.NativeIrisApiEngineBinding _binding;
+  bindings.NativeIrisApiEngineBinding get binding => _binding;
 
   @override
   void initialize() {
@@ -173,9 +174,9 @@ class NativeIrisApiEngineBindingsDelegate extends NativeBindingDelegate {
 }
 
 class IrisApiEngineNativeBindingDelegateProvider
-    implements NativeBindingDelegateProvider {
+    extends NativeBindingsProvider {
   @override
-  NativeBindingDelegate provide() {
+  NativeBindingDelegate provideNativeBindingDelegate() {
     return NativeIrisApiEngineBindingsDelegate();
   }
 }

pubspec.yaml

@@ -17,7 +17,7 @@ dependencies:
   ffi: '>=1.1.2'
   async: ^2.8.2
   meta: ^1.7.0
-  iris_method_channel: ^1.0.0
+  iris_method_channel: ^1.1.0-rc.2
 dev_dependencies:
   flutter_test:
     sdk: flutter