From 07b86bee8e521872048e159bdd213f09335b22a2 Mon Sep 17 00:00:00 2001
From: fufesou <shuanglongchen@yeah.net>
Date: Fri, 10 Feb 2023 18:26:23 +0800
Subject: [PATCH] try fix memory issue when decoding is too slow

Signed-off-by: fufesou <shuanglongchen@yeah.net>
---
 flutter/lib/models/model.dart | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/flutter/lib/models/model.dart b/flutter/lib/models/model.dart
index ca99a5bd1..feab5bdc8 100644
--- a/flutter/lib/models/model.dart
+++ b/flutter/lib/models/model.dart
@@ -415,6 +415,8 @@ class ImageModel with ChangeNotifier {
 
   String id = '';
 
+  int decodeCount = 0;
+
   WeakReference<FFI> parent;
 
   final List<Function(String)> _callbacksOnFirstImage = [];
@@ -434,7 +436,13 @@ class ImageModel with ChangeNotifier {
         }
       }
     }
+
+    if (decodeCount >= 1) {
+      return;
+    }
+
     final pid = parent.target?.id;
+    decodeCount += 1;
     ui.decodeImageFromPixels(
         rgba,
         parent.target?.ffiModel.display.width ?? 0,
@@ -442,6 +450,7 @@ class ImageModel with ChangeNotifier {
         isWeb ? ui.PixelFormat.rgba8888 : ui.PixelFormat.bgra8888, (image) {
       if (parent.target?.id != pid) return;
       try {
+        decodeCount -= 1;
         // my throw exception, because the listener maybe already dispose
         update(image);
       } catch (e) {