From 3896dd8413b22694409561920fd1b4bce095f514 Mon Sep 17 00:00:00 2001
From: Nicola Murino <nicola.murino@gmail.com>
Date: Wed, 21 May 2014 12:59:57 +0200
Subject: [PATCH] facedetect: make updates on_change works as expected

https://bugzilla.gnome.org/show_bug.cgi?id=730509
---
 ext/opencv/gstfacedetect.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ext/opencv/gstfacedetect.c b/ext/opencv/gstfacedetect.c
index c531480a05..5903108306 100644
--- a/ext/opencv/gstfacedetect.c
+++ b/ext/opencv/gstfacedetect.c
@@ -561,7 +561,8 @@ gst_face_detect_transform_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
         break;
       case GST_FACEDETECT_UPDATES_ON_CHANGE:
         if (faces && faces->total > 0) {
-          post_msg = TRUE;
+          if (!filter->face_detected)
+            post_msg = TRUE;
         } else {
           if (filter->face_detected) {
             post_msg = TRUE;