From a16680b453079906b2d3030086e32e31d00be5cb Mon Sep 17 00:00:00 2001
From: Greg Hulands <greg_hulands@apple.com>
Date: Mon, 20 Feb 2017 20:02:07 +0100
Subject: [PATCH] Issue #1780: Safari Webcam Fix.

(cherry picked from commit e82efd2)
---
 .../static/js/app/viewmodels/control.js        | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/octoprint/static/js/app/viewmodels/control.js b/src/octoprint/static/js/app/viewmodels/control.js
index 3879cd6c..d878eef5 100644
--- a/src/octoprint/static/js/app/viewmodels/control.js
+++ b/src/octoprint/static/js/app/viewmodels/control.js
@@ -362,9 +362,21 @@ $(function() {
 
         self.onSettingsBeforeSave = self.updateRotatorWidth;
 
+        self._isSafari = function() {
+            var is_chrome = navigator.userAgent.indexOf('Chrome') > -1;
+            var is_safari = navigator.userAgent.indexOf("Safari") > -1;
+            return is_safari && !is_chrome;
+        }
+
         self._disableWebcam = function() {
             // only disable webcam stream if tab is out of focus for more than 5s, otherwise we might cause
             // more load by the constant connection creation than by the actual webcam stream
+            
+            // safari bug doesn't release the mjpeg stream, so we just disable this for safari.
+            if (self._isSafari()) {
+                return;
+            }
+            
             self.webcamDisableTimeout = setTimeout(function () {
                 $("#webcam_image").attr("src", "");
             }, 5000);
@@ -380,6 +392,12 @@ $(function() {
             }
             var webcamImage = $("#webcam_image");
             var currentSrc = webcamImage.attr("src");
+            
+            // safari bug doesn't release the mjpeg stream, so we just set it up the once
+            if (self._isSafari() && currentSrc != undefined) {
+                return;
+            }
+            
             var newSrc = self.settings.webcam_streamUrl();
             if (currentSrc != newSrc) {
                 if (newSrc.lastIndexOf("?") > -1) {