From 80b7e7c5661205bd66ceeab53a3555272441dc9e Mon Sep 17 00:00:00 2001
From: Duan Weiwei <duanweiwei1982@gmail.com>
Date: Sat, 9 Jul 2022 05:32:51 +0000
Subject: [PATCH] fix: Add WebRTCDelegate.cloneStream to adapt to platform
 differences.

---
 lib/src/voip/call.dart | 11 ++++++-----
 lib/src/voip/voip.dart |  1 +
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/lib/src/voip/call.dart b/lib/src/voip/call.dart
index cba98f92..4ed8765d 100644
--- a/lib/src/voip/call.dart
+++ b/lib/src/voip/call.dart
@@ -473,9 +473,9 @@ class CallSession {
 
     waitForLocalAVStream = false;
 
-    callFeeds.forEach((element) {
-      // Safari can't send a MediaStream to multiple sources, so clone it
-      addLocalStream(element.stream!.clone(), element.purpose);
+    callFeeds.forEach((element) async {
+      addLocalStream(
+          await voip.delegate.cloneStream(element.stream!), element.purpose);
     });
 
     answer();
@@ -504,8 +504,9 @@ class CallSession {
       return;
     }
 
-    callFeeds.forEach((element) {
-      addLocalStream(element.stream!.clone(), element.purpose);
+    callFeeds.forEach((element) async {
+      addLocalStream(
+          await voip.delegate.cloneStream(element.stream!), element.purpose);
     });
 
     if (requestScreenshareFeed) {
diff --git a/lib/src/voip/voip.dart b/lib/src/voip/voip.dart
index 5dcb25fb..fc836e23 100644
--- a/lib/src/voip/voip.dart
+++ b/lib/src/voip/voip.dart
@@ -13,6 +13,7 @@ abstract class WebRTCDelegate {
       Map<String, dynamic> configuration,
       [Map<String, dynamic> constraints = const {}]);
   VideoRenderer createRenderer();
+  Future<MediaStream> cloneStream(MediaStream stream);
   void playRingtone();
   void stopRingtone();
   void handleNewCall(CallSession session);