From d373fcac84131697c04ea4160d040189bfcab8e0 Mon Sep 17 00:00:00 2001
From: jerry73204 <jerry73204@gmail.com>
Date: Sat, 26 Oct 2019 17:32:02 +0800
Subject: [PATCH] appsink: Use FnMut instead of Fn for callbacks

They can only be called from a single thread at once.
---
 gstreamer-app/src/app_sink.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/gstreamer-app/src/app_sink.rs b/gstreamer-app/src/app_sink.rs
index a75ddc861..d566466c1 100644
--- a/gstreamer-app/src/app_sink.rs
+++ b/gstreamer-app/src/app_sink.rs
@@ -67,7 +67,7 @@ pub struct AppSinkCallbacksBuilder {
 }
 
 impl AppSinkCallbacksBuilder {
-    pub fn eos<F: Fn(&AppSink) + Send + 'static>(self, eos: F) -> Self {
+    pub fn eos<F: FnMut(&AppSink) + Send + 'static>(self, eos: F) -> Self {
         Self {
             eos: Some(RefCell::new(Box::new(eos))),
             ..self
@@ -75,7 +75,7 @@ impl AppSinkCallbacksBuilder {
     }
 
     pub fn new_preroll<
-        F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
+        F: FnMut(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
     >(
         self,
         new_preroll: F,
@@ -87,7 +87,7 @@ impl AppSinkCallbacksBuilder {
     }
 
     pub fn new_sample<
-        F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
+        F: FnMut(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
     >(
         self,
         new_sample: F,