From e9bc9c47c2617d56a7cf3b3be0a962b363c884e5 Mon Sep 17 00:00:00 2001
From: Ehren Metcalfe <ehren.m@gmail.com>
Date: Sat, 31 May 2014 19:41:16 -0400
Subject: [PATCH] Fix resource leak with iOS camera due to failure to remove
 AVCaptureSession input/outputs on stop (Bug #3389)

Conflicts:
	modules/highgui/src/cap_ios_abstract_camera.mm
---
 modules/videoio/src/cap_ios_abstract_camera.mm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/modules/videoio/src/cap_ios_abstract_camera.mm b/modules/videoio/src/cap_ios_abstract_camera.mm
index 1ded46a99f..565807cccc 100644
--- a/modules/videoio/src/cap_ios_abstract_camera.mm
+++ b/modules/videoio/src/cap_ios_abstract_camera.mm
@@ -193,6 +193,13 @@
 
     // Release any retained subviews of the main view.
     // e.g. self.myOutlet = nil;
+    for (AVCaptureInput *input in self.captureSession.inputs) {
+        [self.captureSession removeInput:input];
+    }
+
+    for (AVCaptureOutput *output in self.captureSession.outputs) {
+        [self.captureSession removeOutput:output];
+    }
 
     [self.captureSession stopRunning];
     self.captureSession = nil;