From 4b9ae0088bb71dbef08f353a639b9f7767904bba Mon Sep 17 00:00:00 2001
From: Mike Sheldon <mike@mikeasoft.com>
Date: Wed, 6 May 2009 15:33:48 +0100
Subject: [PATCH] Release OpenCV images when finalizing elements

---
 ext/opencv/edgedetect/gstedgedetect.c         | 21 +++++++++++++++++++--
 ext/opencv/facedetect/gstfacedetect.c         | 19 ++++++++++++++++++-
 ext/opencv/pyramidsegment/gstpyramidsegment.c | 18 +++++++++++++++++-
 3 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/ext/opencv/edgedetect/gstedgedetect.c b/ext/opencv/edgedetect/gstedgedetect.c
index 19cae79..26b4f47 100644
--- a/ext/opencv/edgedetect/gstedgedetect.c
+++ b/ext/opencv/edgedetect/gstedgedetect.c
@@ -114,8 +114,24 @@ static void gst_edgedetect_get_property (GObject * object, guint prop_id,
 static gboolean gst_edgedetect_set_caps (GstPad * pad, GstCaps * caps);
 static GstFlowReturn gst_edgedetect_chain (GstPad * pad, GstBuffer * buf);
 
-/* GObject vmethod implementations */
+/* Clean up */
+static void
+gst_edgedetect_finalize (GObject * obj)
+{
+  Gstedgedetect *filter = GST_EDGEDETECT (obj);
+
+  if (filter->cvImage != NULL) 
+  {
+    cvReleaseImage (&filter->cvImage);
+    cvReleaseImage (&filter->cvCEdge);
+    cvReleaseImage (&filter->cvGray);
+    cvReleaseImage (&filter->cvEdge);
+  }
 
+  G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+/* GObject vmethod implementations */
 static void
 gst_edgedetect_base_init (gpointer gclass)
 {
@@ -142,7 +158,9 @@ gst_edgedetect_class_init (GstedgedetectClass * klass)
 
   gobject_class = (GObjectClass *) klass;
   gstelement_class = (GstElementClass *) klass;
+  parent_class = g_type_class_peek_parent (klass);
 
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_edgedetect_finalize);
   gobject_class->set_property = gst_edgedetect_set_property;
   gobject_class->get_property = gst_edgedetect_get_property;
 
@@ -294,7 +312,6 @@ gst_edgedetect_chain (GstPad * pad, GstBuffer * buf)
   return gst_pad_push (filter->srcpad, buf);
 }
 
-
 /* entry point to initialize the plug-in
  * initialize the plug-in itself
  * register the element factories and other features
diff --git a/ext/opencv/facedetect/gstfacedetect.c b/ext/opencv/facedetect/gstfacedetect.c
index 0125c28..e1e6d70 100644
--- a/ext/opencv/facedetect/gstfacedetect.c
+++ b/ext/opencv/facedetect/gstfacedetect.c
@@ -114,8 +114,23 @@ static GstFlowReturn gst_facedetect_chain (GstPad * pad, GstBuffer * buf);
 
 static void gst_facedetect_load_profile (GObject * object);
 
-/* GObject vmethod implementations */
+/* Clean up */
+static void
+gst_facedetect_finalize (GObject * obj)
+{
+  Gstfacedetect *filter = GST_FACEDETECT(obj);
+
+  if (filter->cvImage) 
+  {
+    cvReleaseImage (&filter->cvImage);
+    cvReleaseImage (&filter->cvGray);
+  }
 
+  G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+
+/* GObject vmethod implementations */
 static void
 gst_facedetect_base_init (gpointer gclass)
 {
@@ -142,7 +157,9 @@ gst_facedetect_class_init (GstfacedetectClass * klass)
 
   gobject_class = (GObjectClass *) klass;
   gstelement_class = (GstElementClass *) klass;
+  parent_class = g_type_class_peek_parent (klass);
 
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_facedetect_finalize);
   gobject_class->set_property = gst_facedetect_set_property;
   gobject_class->get_property = gst_facedetect_get_property;
 
diff --git a/ext/opencv/pyramidsegment/gstpyramidsegment.c b/ext/opencv/pyramidsegment/gstpyramidsegment.c
index 43dd502..811baea 100644
--- a/ext/opencv/pyramidsegment/gstpyramidsegment.c
+++ b/ext/opencv/pyramidsegment/gstpyramidsegment.c
@@ -112,8 +112,22 @@ static void gst_pyramidsegment_get_property (GObject * object, guint prop_id,
 static gboolean gst_pyramidsegment_set_caps (GstPad * pad, GstCaps * caps);
 static GstFlowReturn gst_pyramidsegment_chain (GstPad * pad, GstBuffer * buf);
 
-/* GObject vmethod implementations */
+/* Clean up */
+static void
+gst_pyramidsegment_finalize (GObject * obj) 
+{
+  Gstpyramidsegment *filter = GST_PYRAMIDSEGMENT(obj);
+
+  if (filter->cvImage != NULL) 
+  {
+    cvReleaseImage (&filter->cvImage);
+    cvReleaseImage (&filter->cvSegmentedImage);
+  }
+
+  G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
 
+/* GObject vmethod implementations */
 static void
 gst_pyramidsegment_base_init (gpointer gclass)
 {
@@ -140,7 +154,9 @@ gst_pyramidsegment_class_init (GstpyramidsegmentClass * klass)
 
   gobject_class = (GObjectClass *) klass;
   gstelement_class = (GstElementClass *) klass;
+  parent_class = g_type_class_peek_parent (klass);
 
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_pyramidsegment_finalize);
   gobject_class->set_property = gst_pyramidsegment_set_property;
   gobject_class->get_property = gst_pyramidsegment_get_property;
 
-- 
2.7.4