opencv: port to 0.11

Basic port to 0.11 API.

https://bugzilla.gnome.org/show_bug.cgi?id=679164

configure.ac

@@ -323,7 +323,7 @@ GST_PLUGINS_NONPORTED=" aiff \
  decklink fbdev linsys vcd \
  apexsink cdaudio cog dc1394 dirac directfb resindvd \
  gsettings jasper ladspa mimic \
- musepack musicbrainz nas neon ofa openal opencv rsvg sdl sndfile spandsp spc timidity \
+ musepack musicbrainz nas neon ofa openal rsvg sdl sndfile spandsp spc timidity \
  directsound directdraw direct3d9 acm wininet \
  wildmidi xvid lv2 teletextdec dvb sndio"
 AC_SUBST(GST_PLUGINS_NONPORTED)

ext/opencv/gstcvdilate.c

@@ -52,39 +52,29 @@
 GST_DEBUG_CATEGORY_STATIC (gst_cv_dilate_debug);
 #define GST_CAT_DEFAULT gst_cv_dilate_debug
 
-GST_BOILERPLATE (GstCvDilate, gst_cv_dilate, GstCvDilateErode,
+G_DEFINE_TYPE (GstCvDilate, gst_cv_dilate, GST_TYPE_CV_DILATE_ERODE);
-    GST_TYPE_CV_DILATE_ERODE);
 
 static GstFlowReturn gst_cv_dilate_transform_ip (GstOpencvVideoFilter *
     filter, GstBuffer * buf, IplImage * img);
 static GstFlowReturn gst_cv_dilate_transform (GstOpencvVideoFilter * filter,
     GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
 
-/* GObject vmethod implementations */
-static void
-gst_cv_dilate_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_set_details_simple (element_class,
-      "cvdilate",
-      "Transform/Effect/Video",
-      "Applies cvDilate OpenCV function to the image",
-      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
-}
-
 /* initialize the cvdilate's class */
 static void
 gst_cv_dilate_class_init (GstCvDilateClass * klass)
 {
   GstOpencvVideoFilterClass *gstopencvbasefilter_class;
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
 
   gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
 
-  parent_class = g_type_class_peek_parent (klass);
-
   gstopencvbasefilter_class->cv_trans_ip_func = gst_cv_dilate_transform_ip;
   gstopencvbasefilter_class->cv_trans_func = gst_cv_dilate_transform;
+  gst_element_class_set_details_simple (element_class,
+      "cvdilate",
+      "Transform/Effect/Video",
+      "Applies cvDilate OpenCV function to the image",
+      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
 }
 
 /* initialize the new element
@@ -93,7 +83,7 @@ gst_cv_dilate_class_init (GstCvDilateClass * klass)
  * initialize instance structure
  */
 static void
-gst_cv_dilate_init (GstCvDilate * filter, GstCvDilateClass * gclass)
+gst_cv_dilate_init (GstCvDilate * filter)
 {
 }
 

ext/opencv/gstcvdilateerode.c

@@ -75,9 +75,6 @@ enum
 
 #define DEFAULT_ITERATIONS 1
 
-static GstElementClass *parent_class = NULL;
-
-static void gst_cv_dilate_erode_base_init (gpointer gclass);
 static void gst_cv_dilate_erode_class_init (GstCvDilateErodeClass * klass);
 static void gst_cv_dilate_erode_init (GstCvDilateErode * filter,
     GstCvDilateErodeClass * gclass);
@@ -96,7 +93,7 @@ gst_cv_dilate_erode_get_type (void)
     GType _type;
     static const GTypeInfo opencv_dilate_erode_info = {
       sizeof (GstCvDilateErodeClass),
-      (GBaseInitFunc) gst_cv_dilate_erode_base_init,
+      NULL,
       NULL,
       (GClassInitFunc) gst_cv_dilate_erode_class_init,
       NULL,
@@ -117,15 +114,25 @@ gst_cv_dilate_erode_get_type (void)
   return opencv_dilate_erode_type;
 }
 
-/* GObject vmethod implementations */
+/* initialize the cvdilate_erode's class */
-
 static void
-gst_cv_dilate_erode_base_init (gpointer gclass)
+gst_cv_dilate_erode_class_init (GstCvDilateErodeClass * klass)
 {
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+  GObjectClass *gobject_class;
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   GstCaps *caps;
   GstPadTemplate *templ;
 
+  gobject_class = (GObjectClass *) klass;
+
+  gobject_class->set_property = gst_cv_dilate_erode_set_property;
+  gobject_class->get_property = gst_cv_dilate_erode_get_property;
+
+  g_object_class_install_property (gobject_class, PROP_ITERATIONS,
+      g_param_spec_int ("iterations", "iterations",
+          "Number of iterations to run the algorithm", 1, G_MAXINT,
+          DEFAULT_ITERATIONS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   /* add sink and source pad templates */
   caps = gst_opencv_caps_from_cv_image_type (CV_16UC1);
   gst_caps_append (caps, gst_opencv_caps_from_cv_image_type (CV_8UC4));
@@ -134,29 +141,8 @@ gst_cv_dilate_erode_base_init (gpointer gclass)
   templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
       gst_caps_ref (caps));
   gst_element_class_add_pad_template (element_class, templ);
-  gst_object_unref (templ);
   templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
   gst_element_class_add_pad_template (element_class, templ);
-  gst_object_unref (templ);
-}
-
-/* initialize the cvdilate_erode's class */
-static void
-gst_cv_dilate_erode_class_init (GstCvDilateErodeClass * klass)
-{
-  GObjectClass *gobject_class;
-
-  gobject_class = (GObjectClass *) klass;
-
-  parent_class = g_type_class_peek_parent (klass);
-
-  gobject_class->set_property = gst_cv_dilate_erode_set_property;
-  gobject_class->get_property = gst_cv_dilate_erode_get_property;
-
-  g_object_class_install_property (gobject_class, PROP_ITERATIONS,
-      g_param_spec_int ("iterations", "iterations",
-          "Number of iterations to run the algorithm", 1, G_MAXINT,
-          DEFAULT_ITERATIONS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 }
 
 /* initialize the new element

ext/opencv/gstcvequalizehist.c

@@ -56,26 +56,29 @@ GST_DEBUG_CATEGORY_STATIC (gst_cv_equalize_hist_debug);
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_GRAY8));
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY8")));
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_GRAY8));
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY8")));
 
-GST_BOILERPLATE (GstCvEqualizeHist, gst_cv_equalize_hist,
+G_DEFINE_TYPE (GstCvEqualizeHist, gst_cv_equalize_hist,
-    GstOpencvVideoFilter, GST_TYPE_OPENCV_VIDEO_FILTER);
+    GST_TYPE_OPENCV_VIDEO_FILTER);
 
 static GstFlowReturn gst_cv_equalize_hist_transform (GstOpencvVideoFilter *
     filter, GstBuffer * buf, IplImage * img, GstBuffer * outbuf,
     IplImage * outimg);
 
 
-/* GObject vmethod implementations */
 static void
-gst_cv_equalize_hist_base_init (gpointer gclass)
+gst_cv_equalize_hist_class_init (GstCvEqualizeHistClass * klass)
 {
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+  GstOpencvVideoFilterClass *gstopencvbasefilter_class;
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+  gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
+
+  gstopencvbasefilter_class->cv_trans_func = gst_cv_equalize_hist_transform;
 
   gst_element_class_add_pad_template (element_class,
       gst_static_pad_template_get (&src_factory));
@@ -90,19 +93,7 @@ gst_cv_equalize_hist_base_init (gpointer gclass)
 }
 
 static void
-gst_cv_equalize_hist_class_init (GstCvEqualizeHistClass * klass)
+gst_cv_equalize_hist_init (GstCvEqualizeHist * filter)
-{
-  GstOpencvVideoFilterClass *gstopencvbasefilter_class;
-
-  gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
-
-  parent_class = g_type_class_peek_parent (klass);
-  gstopencvbasefilter_class->cv_trans_func = gst_cv_equalize_hist_transform;
-}
-
-static void
-gst_cv_equalize_hist_init (GstCvEqualizeHist * filter,
-    GstCvEqualizeHistClass * gclass)
 {
   gst_base_transform_set_in_place (GST_BASE_TRANSFORM (filter), FALSE);
 }

ext/opencv/gstcverode.c

@@ -52,39 +52,29 @@
 GST_DEBUG_CATEGORY_STATIC (gst_cv_erode_debug);
 #define GST_CAT_DEFAULT gst_cv_erode_debug
 
-GST_BOILERPLATE (GstCvErode, gst_cv_erode, GstCvDilateErode,
+G_DEFINE_TYPE (GstCvErode, gst_cv_erode, GST_TYPE_CV_DILATE_ERODE);
-    GST_TYPE_CV_DILATE_ERODE);
 
 static GstFlowReturn gst_cv_erode_transform_ip (GstOpencvVideoFilter *
     filter, GstBuffer * buf, IplImage * img);
 static GstFlowReturn gst_cv_erode_transform (GstOpencvVideoFilter * filter,
     GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
 
-/* GObject vmethod implementations */
-static void
-gst_cv_erode_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_set_details_simple (element_class,
-      "cverode",
-      "Transform/Effect/Video",
-      "Applies cvErode OpenCV function to the image",
-      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
-}
-
 /* initialize the cverode's class */
 static void
 gst_cv_erode_class_init (GstCvErodeClass * klass)
 {
   GstOpencvVideoFilterClass *gstopencvbasefilter_class;
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
 
   gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
 
-  parent_class = g_type_class_peek_parent (klass);
-
   gstopencvbasefilter_class->cv_trans_ip_func = gst_cv_erode_transform_ip;
   gstopencvbasefilter_class->cv_trans_func = gst_cv_erode_transform;
+  gst_element_class_set_details_simple (element_class,
+      "cverode",
+      "Transform/Effect/Video",
+      "Applies cvErode OpenCV function to the image",
+      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
 }
 
 /* initialize the new element
@@ -93,7 +83,7 @@ gst_cv_erode_class_init (GstCvErodeClass * klass)
  * initialize instance structure
  */
 static void
-gst_cv_erode_init (GstCvErode * filter, GstCvErodeClass * gclass)
+gst_cv_erode_init (GstCvErode * filter)
 {
 }
 

ext/opencv/gstcvlaplace.c

@@ -56,20 +56,22 @@ GST_DEBUG_CATEGORY_STATIC (gst_cv_laplace_debug);
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_GRAY8)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY8"))
     );
 
 #if G_BYTE_ORDER == G_BIG_ENDIAN
-#define BYTE_ORDER_STRING "BIG_ENDIAN"
-#else
-#define BYTE_ORDER_STRING "LITTLE_ENDIAN"
-#endif
-
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_GRAY16 (BYTE_ORDER_STRING))
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_BE"))
     );
+#else
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_LE"))
+    );
+#endif
 
 /* Filter signals and args */
 enum
@@ -85,8 +87,7 @@ enum
 
 #define DEFAULT_APERTURE_SIZE 3
 
-GST_BOILERPLATE (GstCvLaplace, gst_cv_laplace, GstOpencvVideoFilter,
+G_DEFINE_TYPE (GstCvLaplace, gst_cv_laplace, GST_TYPE_OPENCV_VIDEO_FILTER);
-    GST_TYPE_OPENCV_VIDEO_FILTER);
 
 static void gst_cv_laplace_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
@@ -94,7 +95,7 @@ static void gst_cv_laplace_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
 static GstCaps *gst_cv_laplace_transform_caps (GstBaseTransform * trans,
-    GstPadDirection dir, GstCaps * caps);
+    GstPadDirection dir, GstCaps * caps, GstCaps * filter);
 
 static GstFlowReturn gst_cv_laplace_transform (GstOpencvVideoFilter * filter,
     GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
@@ -112,26 +113,7 @@ gst_cv_laplace_finalize (GObject * obj)
   if (filter->intermediary_img)
     cvReleaseImage (&filter->intermediary_img);
 
-  G_OBJECT_CLASS (parent_class)->finalize (obj);
+  G_OBJECT_CLASS (gst_cv_laplace_parent_class)->finalize (obj);
-}
-
-/* GObject vmethod implementations */
-
-static void
-gst_cv_laplace_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
-
-  gst_element_class_set_details_simple (element_class,
-      "cvlaplace",
-      "Transform/Effect/Video",
-      "Applies cvLaplace OpenCV function to the image",
-      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
 }
 
 /* initialize the cvlaplace's class */
@@ -141,13 +123,12 @@ gst_cv_laplace_class_init (GstCvLaplaceClass * klass)
   GObjectClass *gobject_class;
   GstBaseTransformClass *gstbasetransform_class;
   GstOpencvVideoFilterClass *gstopencvbasefilter_class;
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
 
   gobject_class = (GObjectClass *) klass;
   gstbasetransform_class = (GstBaseTransformClass *) klass;
   gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
 
-  parent_class = g_type_class_peek_parent (klass);
-
   gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_cv_laplace_finalize);
   gobject_class->set_property = gst_cv_laplace_set_property;
   gobject_class->get_property = gst_cv_laplace_get_property;
@@ -161,10 +142,21 @@ gst_cv_laplace_class_init (GstCvLaplaceClass * klass)
       g_param_spec_int ("aperture-size", "aperture size",
           "Size of the extended Laplace Kernel (1, 3, 5 or 7)", 1, 7,
           DEFAULT_APERTURE_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+
+  gst_element_class_set_details_simple (element_class,
+      "cvlaplace",
+      "Transform/Effect/Video",
+      "Applies cvLaplace OpenCV function to the image",
+      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
 }
 
 static void
-gst_cv_laplace_init (GstCvLaplace * filter, GstCvLaplaceClass * gclass)
+gst_cv_laplace_init (GstCvLaplace * filter)
 {
   filter->aperture_size = DEFAULT_APERTURE_SIZE;
 
@@ -189,7 +181,6 @@ gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width,
       GST_WARNING_OBJECT (filter, "Unsupported output depth %d", out_depth);
       return FALSE;
   }
-
   if (filter->intermediary_img) {
     cvReleaseImage (&filter->intermediary_img);
   }
@@ -202,41 +193,71 @@ gst_cv_laplace_cv_set_caps (GstOpencvVideoFilter * trans, gint in_width,
 
 static GstCaps *
 gst_cv_laplace_transform_caps (GstBaseTransform * trans, GstPadDirection dir,
-    GstCaps * caps)
+    GstCaps * caps, GstCaps * filter)
 {
-  GstCaps *output = NULL;
+  GstCaps *to, *ret;
+  GstCaps *templ;
   GstStructure *structure;
+  GstPad *other;
   gint i;
 
-  output = gst_caps_copy (caps);
+  to = gst_caps_new_empty ();
+
+  for (i = 0; i < gst_caps_get_size (caps); i++) {
+    const GValue *v;
+    GValue list = { 0, };
+    GValue val = { 0, };
+
+    structure = gst_structure_copy (gst_caps_get_structure (caps, i));
+
+    g_value_init (&list, GST_TYPE_LIST);
+
+    g_value_init (&val, G_TYPE_STRING);
+    g_value_set_string (&val, "GRAY8");
+    gst_value_list_append_value (&list, &val);
+    g_value_unset (&val);
+
+    g_value_init (&val, G_TYPE_STRING);
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+    g_value_set_string (&val, "GRAY16_BE");
+#else
+    g_value_set_string (&val, "GRAY16_LE");
+#endif
+    gst_value_list_append_value (&list, &val);
+    g_value_unset (&val);
+
+    v = gst_structure_get_value (structure, "format");
+
+    gst_value_list_merge (&val, v, &list);
+    gst_structure_set_value (structure, "format", &val);
+    g_value_unset (&val);
+    g_value_unset (&list);
+
+    gst_structure_remove_field (structure, "colorimetry");
+    gst_structure_remove_field (structure, "chroma-site");
+
+    gst_caps_append_structure (to, structure);
 
-  /* we accept anything from the template caps for either side */
-  switch (dir) {
-    case GST_PAD_SINK:
-      for (i = 0; i < gst_caps_get_size (output); i++) {
-        structure = gst_caps_get_structure (output, i);
-        gst_structure_set (structure,
-            "depth", G_TYPE_INT, 16,
-            "bpp", G_TYPE_INT, 16,
-            "endianness", G_TYPE_INT, G_BYTE_ORDER, NULL);
-      }
-      break;
-    case GST_PAD_SRC:
-      for (i = 0; i < gst_caps_get_size (output); i++) {
-        structure = gst_caps_get_structure (output, i);
-        gst_structure_set (structure,
-            "depth", G_TYPE_INT, 8, "bpp", G_TYPE_INT, 8, NULL);
-        gst_structure_remove_field (structure, "endianness");
-      }
-      break;
-    default:
-      gst_caps_unref (output);
-      output = NULL;
-      g_assert_not_reached ();
-      break;
   }
 
-  return output;
+  /* filter against set allowed caps on the pad */
+  other = (dir == GST_PAD_SINK) ? trans->srcpad : trans->sinkpad;
+  templ = gst_pad_get_pad_template_caps (other);
+  ret = gst_caps_intersect (to, templ);
+  gst_caps_unref (to);
+  gst_caps_unref (templ);
+
+  if (ret && filter) {
+    GstCaps *intersection;
+
+    intersection =
+        gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
+    gst_caps_unref (ret);
+    ret = intersection;
+  }
+
+  return ret;
+
 }
 
 static void

ext/opencv/gstcvsmooth.c

@@ -106,8 +106,7 @@ gst_cv_smooth_type_get_type (void)
 #define DEFAULT_PARAM3 0.0
 #define DEFAULT_PARAM4 0.0
 
-GST_BOILERPLATE (GstCvSmooth, gst_cv_smooth, GstOpencvVideoFilter,
+G_DEFINE_TYPE (GstCvSmooth, gst_cv_smooth, GST_TYPE_OPENCV_VIDEO_FILTER);
-    GST_TYPE_OPENCV_VIDEO_FILTER);
 
 static void gst_cv_smooth_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
@@ -119,45 +118,19 @@ static GstFlowReturn gst_cv_smooth_transform_ip (GstOpencvVideoFilter *
 static GstFlowReturn gst_cv_smooth_transform (GstOpencvVideoFilter * filter,
     GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
 
-/* GObject vmethod implementations */
-
-static void
-gst_cv_smooth_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-  GstCaps *caps;
-  GstPadTemplate *templ;
-
-  gst_element_class_set_details_simple (element_class,
-      "cvsmooth",
-      "Transform/Effect/Video",
-      "Applies cvSmooth OpenCV function to the image",
-      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
-
-  /* add sink and source pad templates */
-  caps = gst_opencv_caps_from_cv_image_type (CV_8UC3);
-  gst_caps_append (caps, gst_opencv_caps_from_cv_image_type (CV_8UC1));
-  templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
-      gst_caps_ref (caps));
-  gst_element_class_add_pad_template (element_class, templ);
-  gst_object_unref (templ);
-  templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
-  gst_element_class_add_pad_template (element_class, templ);
-  gst_object_unref (templ);
-}
-
 /* initialize the cvsmooth's class */
 static void
 gst_cv_smooth_class_init (GstCvSmoothClass * klass)
 {
   GObjectClass *gobject_class;
   GstOpencvVideoFilterClass *gstopencvbasefilter_class;
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+  GstCaps *caps;
+  GstPadTemplate *templ;
 
   gobject_class = (GObjectClass *) klass;
   gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
 
-  parent_class = g_type_class_peek_parent (klass);
-
   gobject_class->set_property = gst_cv_smooth_set_property;
   gobject_class->get_property = gst_cv_smooth_get_property;
 
@@ -201,6 +174,21 @@ gst_cv_smooth_class_init (GstCvSmoothClass * klass)
           "/documentation/image_filtering.html#cvSmooth",
           0, G_MAXDOUBLE, DEFAULT_PARAM4,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_set_details_simple (element_class,
+      "cvsmooth",
+      "Transform/Effect/Video",
+      "Applies cvSmooth OpenCV function to the image",
+      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
+
+  /* add sink and source pad templates */
+  caps = gst_opencv_caps_from_cv_image_type (CV_8UC3);
+  gst_caps_append (caps, gst_opencv_caps_from_cv_image_type (CV_8UC1));
+  templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+      gst_caps_ref (caps));
+  gst_element_class_add_pad_template (element_class, templ);
+  templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
+  gst_element_class_add_pad_template (element_class, templ);
 }
 
 /* initialize the new element
@@ -209,7 +197,7 @@ gst_cv_smooth_class_init (GstCvSmoothClass * klass)
  * initialize instance structure
  */
 static void
-gst_cv_smooth_init (GstCvSmooth * filter, GstCvSmoothClass * gclass)
+gst_cv_smooth_init (GstCvSmooth * filter)
 {
   filter->type = DEFAULT_CV_SMOOTH_TYPE;
   filter->param1 = DEFAULT_PARAM1;

ext/opencv/gstcvsobel.c

@@ -56,20 +56,23 @@ GST_DEBUG_CATEGORY_STATIC (gst_cv_sobel_debug);
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_GRAY8)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY8"))
     );
 
-#if G_BYTE_ORDER == G_BIG_ENDIAN
-#define BYTE_ORDER_STRING "BIG_ENDIAN"
-#else
-#define BYTE_ORDER_STRING "LITTLE_ENDIAN"
-#endif
 
+#if G_BYTE_ORDER == G_BIG_ENDIAN
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_GRAY16 (BYTE_ORDER_STRING))
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_BE"))
     );
+#else
+static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("GRAY16_LE"))
+    );
+#endif
 
 /* Filter signals and args */
 enum
@@ -89,8 +92,7 @@ enum
 #define DEFAULT_Y_ORDER 0
 #define DEFAULT_APERTURE_SIZE 3
 
-GST_BOILERPLATE (GstCvSobel, gst_cv_sobel, GstOpencvVideoFilter,
+G_DEFINE_TYPE (GstCvSobel, gst_cv_sobel, GST_TYPE_OPENCV_VIDEO_FILTER);
-    GST_TYPE_OPENCV_VIDEO_FILTER);
 
 static void gst_cv_sobel_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
@@ -98,30 +100,11 @@ static void gst_cv_sobel_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
 static GstCaps *gst_cv_sobel_transform_caps (GstBaseTransform * trans,
-    GstPadDirection dir, GstCaps * caps);
+    GstPadDirection dir, GstCaps * caps, GstCaps * filter);
 
 static GstFlowReturn gst_cv_sobel_transform (GstOpencvVideoFilter * filter,
     GstBuffer * buf, IplImage * img, GstBuffer * outbuf, IplImage * outimg);
 
-/* GObject vmethod implementations */
-
-static void
-gst_cv_sobel_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
-
-  gst_element_class_set_details_simple (element_class,
-      "cvsobel",
-      "Transform/Effect/Video",
-      "Applies cvSobel OpenCV function to the image",
-      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
-}
-
 /* initialize the cvsobel's class */
 static void
 gst_cv_sobel_class_init (GstCvSobelClass * klass)
@@ -130,12 +113,11 @@ gst_cv_sobel_class_init (GstCvSobelClass * klass)
   GstBaseTransformClass *gstbasetransform_class;
   GstOpencvVideoFilterClass *gstopencvbasefilter_class;
 
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   gobject_class = (GObjectClass *) klass;
   gstbasetransform_class = (GstBaseTransformClass *) klass;
   gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
 
-  parent_class = g_type_class_peek_parent (klass);
-
   gobject_class->set_property = gst_cv_sobel_set_property;
   gobject_class->get_property = gst_cv_sobel_get_property;
 
@@ -155,10 +137,21 @@ gst_cv_sobel_class_init (GstCvSobelClass * klass)
       g_param_spec_int ("aperture-size", "aperture size",
           "Size of the extended Sobel Kernel (1, 3, 5 or 7)", 1, 7,
           DEFAULT_APERTURE_SIZE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+
+  gst_element_class_set_details_simple (element_class,
+      "cvsobel",
+      "Transform/Effect/Video",
+      "Applies cvSobel OpenCV function to the image",
+      "Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
 }
 
 static void
-gst_cv_sobel_init (GstCvSobel * filter, GstCvSobelClass * gclass)
+gst_cv_sobel_init (GstCvSobel * filter)
 {
   filter->x_order = DEFAULT_X_ORDER;
   filter->y_order = DEFAULT_Y_ORDER;
@@ -169,41 +162,69 @@ gst_cv_sobel_init (GstCvSobel * filter, GstCvSobelClass * gclass)
 
 static GstCaps *
 gst_cv_sobel_transform_caps (GstBaseTransform * trans, GstPadDirection dir,
-    GstCaps * caps)
+    GstCaps * caps, GstCaps * filter)
 {
-  GstCaps *output = NULL;
+  GstCaps *to, *ret;
+  GstCaps *templ;
   GstStructure *structure;
+  GstPad *other;
   gint i;
 
-  output = gst_caps_copy (caps);
+  to = gst_caps_new_empty ();
+
+  for (i = 0; i < gst_caps_get_size (caps); i++) {
+    const GValue *v;
+    GValue list = { 0, };
+    GValue val = { 0, };
+
+    structure = gst_structure_copy (gst_caps_get_structure (caps, i));
+
+    g_value_init (&list, GST_TYPE_LIST);
+
+    g_value_init (&val, G_TYPE_STRING);
+    g_value_set_string (&val, "GRAY8");
+    gst_value_list_append_value (&list, &val);
+    g_value_unset (&val);
+
+    g_value_init (&val, G_TYPE_STRING);
+#if G_BYTE_ORDER == G_BIG_ENDIAN
+    g_value_set_string (&val, "GRAY16_BE");
+#else
+    g_value_set_string (&val, "GRAY16_LE");
+#endif
+    gst_value_list_append_value (&list, &val);
+    g_value_unset (&val);
+
+    v = gst_structure_get_value (structure, "format");
+
+    gst_value_list_merge (&val, v, &list);
+    gst_structure_set_value (structure, "format", &val);
+    g_value_unset (&val);
+    g_value_unset (&list);
+
+    gst_structure_remove_field (structure, "colorimetry");
+    gst_structure_remove_field (structure, "chroma-site");
+
+    gst_caps_append_structure (to, structure);
 
-  /* we accept anything from the template caps for either side */
-  switch (dir) {
-    case GST_PAD_SINK:
-      for (i = 0; i < gst_caps_get_size (output); i++) {
-        structure = gst_caps_get_structure (output, i);
-        gst_structure_set (structure,
-            "depth", G_TYPE_INT, 16,
-            "bpp", G_TYPE_INT, 16,
-            "endianness", G_TYPE_INT, G_BYTE_ORDER, NULL);
   }
-      break;
+  /* filter against set allowed caps on the pad */
-    case GST_PAD_SRC:
+  other = (dir == GST_PAD_SINK) ? trans->srcpad : trans->sinkpad;
-      for (i = 0; i < gst_caps_get_size (output); i++) {
+  templ = gst_pad_get_pad_template_caps (other);
-        structure = gst_caps_get_structure (output, i);
+  ret = gst_caps_intersect (to, templ);
-        gst_structure_set (structure,
+  gst_caps_unref (to);
-            "depth", G_TYPE_INT, 8, "bpp", G_TYPE_INT, 8, NULL);
+  gst_caps_unref (templ);
-        gst_structure_remove_field (structure, "endianness");
+
-      }
+  if (ret && filter) {
-      break;
+    GstCaps *intersection;
-    default:
+
-      gst_caps_unref (output);
+    intersection =
-      output = NULL;
+        gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
-      g_assert_not_reached ();
+    gst_caps_unref (ret);
-      break;
+    ret = intersection;
   }
 
-  return output;
+  return ret;
 }
 
 static void

ext/opencv/gstedgedetect.c

@@ -91,24 +91,26 @@ enum
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
-GST_BOILERPLATE (GstEdgeDetect, gst_edge_detect, GstElement, GST_TYPE_ELEMENT);
+G_DEFINE_TYPE (GstEdgeDetect, gst_edge_detect, GST_TYPE_ELEMENT);
 
 static void gst_edge_detect_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
 static void gst_edge_detect_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
-static gboolean gst_edge_detect_set_caps (GstPad * pad, GstCaps * caps);
+static gboolean gst_edge_detect_handle_sink_event (GstPad * pad,
-static GstFlowReturn gst_edge_detect_chain (GstPad * pad, GstBuffer * buf);
+    GstObject * parent, GstEvent * event);
+static GstFlowReturn gst_edge_detect_chain (GstPad * pad, GstObject * parent,
+    GstBuffer * buf);
 
 /* Clean up */
 static void
@@ -123,25 +125,7 @@ gst_edge_detect_finalize (GObject * obj)
     cvReleaseImage (&filter->cvEdge);
   }
 
-  G_OBJECT_CLASS (parent_class)->finalize (obj);
+  G_OBJECT_CLASS (gst_edge_detect_parent_class)->finalize (obj);
-}
-
-/* GObject vmethod implementations */
-static void
-gst_edge_detect_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_set_details_simple (element_class,
-      "edgedetect",
-      "Filter/Effect/Video",
-      "Performs canny edge detection on videos and images.",
-      "Michael Sheldon <mike@mikeasoft.com>");
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the edgedetect's class */
@@ -150,6 +134,7 @@ gst_edge_detect_class_init (GstEdgeDetectClass * klass)
 {
   GObjectClass *gobject_class;
 
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   gobject_class = (GObjectClass *) klass;
 
   gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_edge_detect_finalize);
@@ -172,6 +157,17 @@ gst_edge_detect_class_init (GstEdgeDetectClass * klass)
       g_param_spec_int ("aperture", "Aperture",
           "Aperture size for Sobel operator (Must be either 3, 5 or 7", 3, 7, 3,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_set_details_simple (element_class,
+      "edgedetect",
+      "Filter/Effect/Video",
+      "Performs canny edge detection on videos and images.",
+      "Michael Sheldon <mike@mikeasoft.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the new element
@@ -180,19 +176,17 @@ gst_edge_detect_class_init (GstEdgeDetectClass * klass)
  * initialize instance structure
  */
 static void
-gst_edge_detect_init (GstEdgeDetect * filter, GstEdgeDetectClass * gclass)
+gst_edge_detect_init (GstEdgeDetect * filter)
 {
   filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
-  gst_pad_set_setcaps_function (filter->sinkpad,
+  GST_PAD_SET_PROXY_CAPS (filter->sinkpad);
-      GST_DEBUG_FUNCPTR (gst_edge_detect_set_caps));
+  gst_pad_set_event_function (filter->sinkpad,
-  gst_pad_set_getcaps_function (filter->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_edge_detect_handle_sink_event));
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
   gst_pad_set_chain_function (filter->sinkpad,
       GST_DEBUG_FUNCPTR (gst_edge_detect_chain));
 
   filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
-  gst_pad_set_getcaps_function (filter->srcpad,
+  GST_PAD_SET_PROXY_CAPS (filter->srcpad);
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
 
   gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
   gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
@@ -256,14 +250,22 @@ gst_edge_detect_get_property (GObject * object, guint prop_id,
 
 /* this function handles the link with other elements */
 static gboolean
-gst_edge_detect_set_caps (GstPad * pad, GstCaps * caps)
+gst_edge_detect_handle_sink_event (GstPad * pad, GstObject * parent,
+    GstEvent * event)
 {
   GstEdgeDetect *filter;
-  GstPad *otherpad;
   gint width, height;
   GstStructure *structure;
+  gboolean res = TRUE;
+
+  filter = GST_EDGE_DETECT (parent);
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_CAPS:
+    {
+      GstCaps *caps;
+      gst_event_parse_caps (event, &caps);
 
-  filter = GST_EDGE_DETECT (gst_pad_get_parent (pad));
       structure = gst_caps_get_structure (caps, 0);
       gst_structure_get_int (structure, "width", &width);
       gst_structure_get_int (structure, "height", &height);
@@ -272,25 +274,34 @@ gst_edge_detect_set_caps (GstPad * pad, GstCaps * caps)
       filter->cvCEdge = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 3);
       filter->cvGray = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 1);
       filter->cvEdge = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 1);
+      break;
+    }
+    default:
+      break;
+  }
 
-  otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
+  res = gst_pad_event_default (pad, parent, event);
-  gst_object_unref (filter);
+
+  return res;
 
-  return gst_pad_set_caps (otherpad, caps);
 }
 
 /* chain function
  * this function does the actual processing
  */
 static GstFlowReturn
-gst_edge_detect_chain (GstPad * pad, GstBuffer * buf)
+gst_edge_detect_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
 {
   GstEdgeDetect *filter;
   GstBuffer *outbuf;
+  GstMapInfo in_info;
+  GstMapInfo out_info;
 
-  filter = GST_EDGE_DETECT (GST_OBJECT_PARENT (pad));
+  filter = GST_EDGE_DETECT (parent);
 
-  filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
+  buf = gst_buffer_make_writable (buf);
+  gst_buffer_map (buf, &in_info, GST_MAP_WRITE);
+  filter->cvImage->imageData = (char *) in_info.data;
 
   cvCvtColor (filter->cvImage, filter->cvGray, CV_RGB2GRAY);
   cvSmooth (filter->cvGray, filter->cvEdge, CV_BLUR, 3, 3, 0, 0);
@@ -306,10 +317,14 @@ gst_edge_detect_chain (GstPad * pad, GstBuffer * buf)
   }
 
   outbuf = gst_buffer_new_and_alloc (filter->cvCEdge->imageSize);
-  gst_buffer_copy_metadata (outbuf, buf, GST_BUFFER_COPY_ALL);
+  gst_buffer_copy_into (outbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
-  memcpy (GST_BUFFER_DATA (outbuf), filter->cvCEdge->imageData,
-      GST_BUFFER_SIZE (outbuf));
 
+  gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE);
+  memcpy (out_info.data, filter->cvCEdge->imageData,
+      gst_buffer_get_size (outbuf));
+
+  gst_buffer_unmap (buf, &in_info);
+  gst_buffer_unmap (outbuf, &out_info);
   gst_buffer_unref (buf);
   return gst_pad_push (filter->srcpad, outbuf);
 }

ext/opencv/gstfaceblur.c

@@ -89,24 +89,26 @@ enum
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
-GST_BOILERPLATE (GstFaceBlur, gst_face_blur, GstElement, GST_TYPE_ELEMENT);
+G_DEFINE_TYPE (GstFaceBlur, gst_face_blur, GST_TYPE_ELEMENT);
 
 static void gst_face_blur_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
 static void gst_face_blur_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
-static gboolean gst_face_blur_set_caps (GstPad * pad, GstCaps * caps);
+static gboolean gst_face_blur_handle_sink_event (GstPad * pad,
-static GstFlowReturn gst_face_blur_chain (GstPad * pad, GstBuffer * buf);
+    GstObject * parent, GstEvent * event);
+static GstFlowReturn gst_face_blur_chain (GstPad * pad, GstObject * parent,
+    GstBuffer * buf);
 
 static void gst_face_blur_load_profile (GstFaceBlur * filter);
 
@@ -123,15 +125,27 @@ gst_face_blur_finalize (GObject * obj)
 
   g_free (filter->profile);
 
-  G_OBJECT_CLASS (parent_class)->finalize (obj);
+  G_OBJECT_CLASS (gst_face_blur_parent_class)->finalize (obj);
 }
 
 
-/* GObject vmethod implementations */
+/* initialize the faceblur's class */
 static void
-gst_face_blur_base_init (gpointer gclass)
+gst_face_blur_class_init (GstFaceBlurClass * klass)
 {
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
+  GObjectClass *gobject_class;
+
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+  gobject_class = (GObjectClass *) klass;
+
+  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_face_blur_finalize);
+  gobject_class->set_property = gst_face_blur_set_property;
+  gobject_class->get_property = gst_face_blur_get_property;
+
+  g_object_class_install_property (gobject_class, PROP_PROFILE,
+      g_param_spec_string ("profile", "Profile",
+          "Location of Haar cascade file to use for face blurion",
+          DEFAULT_PROFILE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
   gst_element_class_set_details_simple (element_class,
       "faceblur",
@@ -145,44 +159,23 @@ gst_face_blur_base_init (gpointer gclass)
       gst_static_pad_template_get (&sink_factory));
 }
 
-/* initialize the faceblur's class */
-static void
-gst_face_blur_class_init (GstFaceBlurClass * klass)
-{
-  GObjectClass *gobject_class;
-
-  gobject_class = (GObjectClass *) klass;
-  parent_class = g_type_class_peek_parent (klass);
-
-  gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_face_blur_finalize);
-  gobject_class->set_property = gst_face_blur_set_property;
-  gobject_class->get_property = gst_face_blur_get_property;
-
-  g_object_class_install_property (gobject_class, PROP_PROFILE,
-      g_param_spec_string ("profile", "Profile",
-          "Location of Haar cascade file to use for face blurion",
-          DEFAULT_PROFILE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-}
-
 /* initialize the new element
  * instantiate pads and add them to element
  * set pad calback functions
  * initialize instance structure
  */
 static void
-gst_face_blur_init (GstFaceBlur * filter, GstFaceBlurClass * gclass)
+gst_face_blur_init (GstFaceBlur * filter)
 {
   filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
-  gst_pad_set_setcaps_function (filter->sinkpad,
+  GST_PAD_SET_PROXY_CAPS (filter->sinkpad);
-      GST_DEBUG_FUNCPTR (gst_face_blur_set_caps));
+  gst_pad_set_event_function (filter->sinkpad,
-  gst_pad_set_getcaps_function (filter->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_face_blur_handle_sink_event));
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
   gst_pad_set_chain_function (filter->sinkpad,
       GST_DEBUG_FUNCPTR (gst_face_blur_chain));
 
   filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
-  gst_pad_set_getcaps_function (filter->srcpad,
+  GST_PAD_SET_PROXY_CAPS (filter->srcpad);
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
 
   gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
   gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
@@ -228,14 +221,22 @@ gst_face_blur_get_property (GObject * object, guint prop_id,
 
 /* this function handles the link with other elements */
 static gboolean
-gst_face_blur_set_caps (GstPad * pad, GstCaps * caps)
+gst_face_blur_handle_sink_event (GstPad * pad, GstObject * parent,
+    GstEvent * event)
 {
   GstFaceBlur *filter;
-  GstPad *otherpad;
   gint width, height;
   GstStructure *structure;
+  gboolean res = TRUE;
+
+  filter = GST_FACE_BLUR (parent);
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_CAPS:
+    {
+      GstCaps *caps;
+      gst_event_parse_caps (event, &caps);
 
-  filter = GST_FACE_BLUR (gst_pad_get_parent (pad));
       structure = gst_caps_get_structure (caps, 0);
       gst_structure_get_int (structure, "width", &width);
       gst_structure_get_int (structure, "height", &height);
@@ -243,26 +244,33 @@ gst_face_blur_set_caps (GstPad * pad, GstCaps * caps)
       filter->cvImage = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 3);
       filter->cvGray = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 1);
       filter->cvStorage = cvCreateMemStorage (0);
+      break;
+    }
+    default:
+      break;
+  }
 
-  otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
+  res = gst_pad_event_default (pad, parent, event);
-  gst_object_unref (filter);
 
-  return gst_pad_set_caps (otherpad, caps);
+  return res;
 }
 
 /* chain function
  * this function does the actual processing
  */
 static GstFlowReturn
-gst_face_blur_chain (GstPad * pad, GstBuffer * buf)
+gst_face_blur_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
 {
   GstFaceBlur *filter;
   CvSeq *faces;
+  GstMapInfo info;
   int i;
 
   filter = GST_FACE_BLUR (GST_OBJECT_PARENT (pad));
 
-  filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
+  buf = gst_buffer_make_writable (buf);
+  gst_buffer_map (buf, &info, GST_MAP_READWRITE);
+  filter->cvImage->imageData = (char *) info.data;
 
   cvCvtColor (filter->cvImage, filter->cvGray, CV_RGB2GRAY);
   cvClearMemStorage (filter->cvStorage);

ext/opencv/gstfacedetect.c

@@ -154,17 +154,16 @@ gst_opencv_face_detect_flags_get_type (void)
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
-GST_BOILERPLATE (GstFaceDetect, gst_face_detect, GstOpencvVideoFilter,
+G_DEFINE_TYPE (GstFaceDetect, gst_face_detect, GST_TYPE_OPENCV_VIDEO_FILTER);
-    GST_TYPE_OPENCV_VIDEO_FILTER);
 
 static void gst_face_detect_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
@@ -205,26 +204,7 @@ gst_face_detect_finalize (GObject * obj)
   if (filter->cvEyesDetect)
     cvReleaseHaarClassifierCascade (&filter->cvEyesDetect);
 
-  G_OBJECT_CLASS (parent_class)->finalize (obj);
+  G_OBJECT_CLASS (gst_face_detect_parent_class)->finalize (obj);
-}
-
-
-/* GObject vmethod implementations */
-static void
-gst_face_detect_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_set_details_simple (element_class,
-      "facedetect",
-      "Filter/Effect/Video",
-      "Performs face detection on videos and images, providing detected positions via bus messages",
-      "Michael Sheldon <mike@mikeasoft.com>");
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the facedetect's class */
@@ -234,6 +214,7 @@ gst_face_detect_class_init (GstFaceDetectClass * klass)
   GObjectClass *gobject_class;
   GstOpencvVideoFilterClass *gstopencvbasefilter_class;
 
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   gobject_class = (GObjectClass *) klass;
   gstopencvbasefilter_class = (GstOpencvVideoFilterClass *) klass;
 
@@ -288,13 +269,24 @@ gst_face_detect_class_init (GstFaceDetectClass * klass)
       g_param_spec_int ("min-size-height", "Minimum face height",
           "Minimum area height to be recognized as a face", 0, G_MAXINT,
           DEFAULT_MIN_SIZE_HEIGHT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_set_details_simple (element_class,
+      "facedetect",
+      "Filter/Effect/Video",
+      "Performs face detection on videos and images, providing detected positions via bus messages",
+      "Michael Sheldon <mike@mikeasoft.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the new element
  * initialize instance structure
  */
 static void
-gst_face_detect_init (GstFaceDetect * filter, GstFaceDetectClass * gclass)
+gst_face_detect_init (GstFaceDetect * filter)
 {
   filter->face_profile = g_strdup (DEFAULT_FACE_PROFILE);
   filter->nose_profile = g_strdup (DEFAULT_NOSE_PROFILE);
@@ -679,7 +671,8 @@ gst_face_detect_transform_ip (GstOpencvVideoFilter * base, GstBuffer * buf,
       }
     }
 
-    gst_structure_set_value (msg->structure, "faces", &facelist);
+    gst_structure_set_value ((GstStructure *) gst_message_get_structure (msg),
+        "faces", &facelist);
     g_value_unset (&facelist);
     gst_element_post_message (GST_ELEMENT (filter), msg);
   }

ext/opencv/gstmotioncells.c

@@ -143,23 +143,24 @@ enum
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB));
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB")));
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB));
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB")));
 
-GST_BOILERPLATE (GstMotioncells, gst_motion_cells, GstElement,
+G_DEFINE_TYPE (GstMotioncells, gst_motion_cells, GST_TYPE_ELEMENT);
-    GST_TYPE_ELEMENT);
 
 static void gst_motion_cells_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
 static void gst_motion_cells_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
-static gboolean gst_motion_cells_set_caps (GstPad * pad, GstCaps * caps);
+static gboolean gst_motion_cells_handle_sink_event (GstPad * pad,
-static GstFlowReturn gst_motion_cells_chain (GstPad * pad, GstBuffer * buf);
+    GstObject * parent, GstEvent * event);
+static GstFlowReturn gst_motion_cells_chain (GstPad * pad, GstObject * parent,
+    GstBuffer * buf);
 
 static void gst_motioncells_update_motion_cells (GstMotioncells * filter);
 static void gst_motioncells_update_motion_masks (GstMotioncells * filter);
@@ -194,25 +195,7 @@ gst_motion_cells_finalize (GObject * obj)
   GFREE (filter->basename_datafile);
   GFREE (filter->datafile_extension);
 
-  G_OBJECT_CLASS (parent_class)->finalize (obj);
+  G_OBJECT_CLASS (gst_motion_cells_parent_class)->finalize (obj);
-}
-
-/* GObject vmethod implementations */
-static void
-gst_motion_cells_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_set_details_simple (element_class,
-      "motioncells",
-      "Filter/Effect/Video",
-      "Performs motion detection on videos and images, providing detected motion cells index via bus messages",
-      "Robert Jobbagy <jobbagy dot robert at gmail dot com>, Nicola Murino <nicola dot murino at gmail.com>");
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the motioncells's class */
@@ -221,8 +204,8 @@ gst_motion_cells_class_init (GstMotioncellsClass * klass)
 {
   GObjectClass *gobject_class;
 
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   gobject_class = (GObjectClass *) klass;
-  parent_class = g_type_class_peek_parent (klass);
 
   gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_motion_cells_finalize);
   gobject_class->set_property = gst_motion_cells_set_property;
@@ -316,6 +299,17 @@ gst_motion_cells_class_init (GstMotioncellsClass * klass)
           "Motion Cell Border Thickness, if it's -1 then motion cell will be fill",
           THICKNESS_MIN, THICKNESS_MAX, THICKNESS_DEF,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_set_details_simple (element_class,
+      "motioncells",
+      "Filter/Effect/Video",
+      "Performs motion detection on videos and images, providing detected motion cells index via bus messages",
+      "Robert Jobbagy <jobbagy dot robert at gmail dot com>, Nicola Murino <nicola dot murino at gmail.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the new element
@@ -324,19 +318,18 @@ gst_motion_cells_class_init (GstMotioncellsClass * klass)
  * initialize instance structure
  */
 static void
-gst_motion_cells_init (GstMotioncells * filter, GstMotioncellsClass * gclass)
+gst_motion_cells_init (GstMotioncells * filter)
 {
   filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
-  gst_pad_set_setcaps_function (filter->sinkpad,
+  GST_PAD_SET_PROXY_CAPS (filter->sinkpad);
-      GST_DEBUG_FUNCPTR (gst_motion_cells_set_caps));
+
-  gst_pad_set_getcaps_function (filter->sinkpad,
+  gst_pad_set_event_function (filter->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
+      GST_DEBUG_FUNCPTR (gst_motion_cells_handle_sink_event));
   gst_pad_set_chain_function (filter->sinkpad,
       GST_DEBUG_FUNCPTR (gst_motion_cells_chain));
 
   filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
-  gst_pad_set_getcaps_function (filter->srcpad,
+  GST_PAD_SET_PROXY_CAPS (filter->srcpad);
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
 
   gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
   gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
@@ -817,38 +810,53 @@ gst_motioncells_update_motion_masks (GstMotioncells * filter)
 
 /* this function handles the link with other elements */
 static gboolean
-gst_motion_cells_set_caps (GstPad * pad, GstCaps * caps)
+gst_motion_cells_handle_sink_event (GstPad * pad, GstObject * parent,
+    GstEvent * event)
 {
   GstMotioncells *filter;
-  GstPad *otherpad;
+  GstVideoInfo info;
-  GstStructure *structure;
+  gboolean res = TRUE;
-  int numerator, denominator;
 
-  filter = gst_motion_cells (gst_pad_get_parent (pad));
+  filter = gst_motion_cells (parent);
-  structure = gst_caps_get_structure (caps, 0);
+
-  gst_structure_get_int (structure, "width", &filter->width);
+  switch (GST_EVENT_TYPE (event)) {
-  gst_structure_get_int (structure, "height", &filter->height);
+    case GST_EVENT_CAPS:
-  gst_structure_get_fraction (structure, "framerate", &numerator, &denominator);
+    {
-  filter->framerate = (double) numerator / (double) denominator;
+      GstCaps *caps;
+      gst_event_parse_caps (event, &caps);
+      gst_video_info_from_caps (&info, caps);
+
+      filter->width = info.width;
+      filter->height = info.height;
+
+      filter->framerate = (double) info.fps_n / (double) info.fps_d;
       if (filter->cvImage)
         cvReleaseImage (&filter->cvImage);
       filter->cvImage =
-      cvCreateImage (cvSize (filter->width, filter->height), IPL_DEPTH_8U, 3);
+          cvCreateImage (cvSize (filter->width, filter->height), IPL_DEPTH_8U,
+          3);
+      break;
+    }
+    default:
+      break;
+  }
+
+  res = gst_pad_event_default (pad, parent, event);
+
+  return res;
 
-  otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
-  gst_object_unref (filter);
 
-  return gst_pad_set_caps (otherpad, caps);
 }
 
 /* chain function
  * this function does the actual processing
  */
 static GstFlowReturn
-gst_motion_cells_chain (GstPad * pad, GstBuffer * buf)
+gst_motion_cells_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
 {
   GstMotioncells *filter;
-  filter = gst_motion_cells (GST_OBJECT_PARENT (pad));
+  GstMapInfo info;
+  filter = gst_motion_cells (parent);
   GST_OBJECT_LOCK (filter);
   if (filter->calculate_motion) {
     double sensitivity;
@@ -865,8 +873,10 @@ gst_motion_cells_chain (GstPad * pad, GstBuffer * buf)
     motioncellidx *motionmaskcellsidx;
     cellscolor motioncellscolor;
     motioncellidx *motioncellsidx;
+
     buf = gst_buffer_make_writable (buf);
-    filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
+    gst_buffer_map (buf, &info, GST_MAP_WRITE);
+    filter->cvImage->imageData = (char *) info.data;
     if (filter->firstframe) {
       setPrevFrame (filter->cvImage, filter->id);
       filter->firstframe = FALSE;

ext/opencv/gstopencvutils.c

@@ -29,31 +29,34 @@ static gboolean
 gst_opencv_get_ipl_depth_and_channels (GstStructure * structure,
     gint * ipldepth, gint * channels, GError ** err)
 {
-  gint depth, bpp;
+  GstVideoFormat format = GST_VIDEO_FORMAT_UNKNOWN;
+  const GstVideoFormatInfo *info;
+  gint depth = 0, i;
+  const gchar *s;
 
-  if (!gst_structure_get_int (structure, "depth", &depth) ||
+  if (gst_structure_has_name (structure, "video/x-raw")) {
-      !gst_structure_get_int (structure, "bpp", &bpp)) {
+    if (!(s = gst_structure_get_string (structure, "format")))
-    g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
+      return FALSE;
-        "No depth/bpp in caps");
+    format = gst_video_format_from_string (s);
+    if (format == GST_VIDEO_FORMAT_UNKNOWN)
       return FALSE;
   }
 
-  if (depth != bpp) {
+  info = gst_video_format_get_info (format);
-    g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
-        "Depth and bpp should be equal");
-    return FALSE;
-  }
 
-  if (gst_structure_has_name (structure, "video/x-raw-rgb")) {
+  if (GST_VIDEO_FORMAT_INFO_IS_RGB (info))
     *channels=3;
-  } else if (gst_structure_has_name (structure, "video/x-raw-gray")) {
+  else if (GST_VIDEO_FORMAT_INFO_IS_GRAY (info))
     *channels=1;
-  } else {
+  else {
     g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
-        "Unsupported caps %s", gst_structure_get_name (structure));
+        "Unsupported structure %s", gst_structure_get_name (structure));
     return FALSE;
   }
 
+  for (i = 0; i < GST_VIDEO_FORMAT_INFO_N_COMPONENTS (info); i++)
+    depth += GST_VIDEO_FORMAT_INFO_DEPTH (info, i);
+
   if (depth / *channels == 8) {
     /* TODO signdness? */
     *ipldepth = IPL_DEPTH_8U;
@@ -92,9 +95,42 @@ gboolean
 gst_opencv_parse_iplimage_params_from_caps (GstCaps * caps, gint * width,
     gint * height, gint * ipldepth, gint * channels, GError ** err)
 {
-  return
+  GstVideoInfo info;
-      gst_opencv_parse_iplimage_params_from_structure (gst_caps_get_structure
+  gint i, depth = 0;
-      (caps, 0), width, height, ipldepth, channels, err);
+
+  if (!gst_video_info_from_caps (&info, caps)) {
+    GST_ERROR ("Failed to get the videoinfo from caps");
+    g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
+        "No width/heighti/depth/channels in caps");
+    return FALSE;
+  }
+
+  *width = GST_VIDEO_INFO_WIDTH (&info);
+  *height = GST_VIDEO_INFO_HEIGHT (&info);
+  if (GST_VIDEO_INFO_IS_RGB (&info))
+    *channels = 3;
+  else if (GST_VIDEO_INFO_IS_GRAY (&info))
+    *channels = 1;
+  else {
+    g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
+        "Unsupported caps %s", gst_caps_to_string(caps));
+    return FALSE;
+  }
+
+  for (i = 0; i < GST_VIDEO_INFO_N_COMPONENTS (&info); i++)
+    depth += GST_VIDEO_INFO_COMP_DEPTH (&info, i);
+
+  if (depth / *channels == 8) {
+    /* TODO signdness? */
+    *ipldepth = IPL_DEPTH_8U;
+  } else if (depth / *channels == 16) {
+    *ipldepth = IPL_DEPTH_16U;
+  } else {
+    g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
+        "Unsupported depth/channels %d/%d", depth, *channels);
+    return FALSE;
+  }
+  return TRUE;
 }
 
 GstCaps *

ext/opencv/gstopencvvideofilter.c

@@ -73,7 +73,6 @@ static void gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass *
     klass);
 static void gst_opencv_video_filter_init (GstOpencvVideoFilter * trans,
     GstOpencvVideoFilterClass * klass);
-static void gst_opencv_video_filter_base_init (gpointer gclass);
 
 static gboolean gst_opencv_video_filter_set_caps (GstBaseTransform * trans,
     GstCaps * incaps, GstCaps * outcaps);
@@ -96,7 +95,7 @@ gst_opencv_video_filter_get_type (void)
     GType _type;
     static const GTypeInfo opencv_base_transform_info = {
       sizeof (GstOpencvVideoFilterClass),
-      (GBaseInitFunc) gst_opencv_video_filter_base_init,
+      NULL,
       NULL,
       (GClassInitFunc) gst_opencv_video_filter_class_init,
       NULL,
@@ -128,12 +127,6 @@ gst_opencv_video_filter_finalize (GObject * obj)
   G_OBJECT_CLASS (parent_class)->finalize (obj);
 }
 
-/* GObject vmethod implementations */
-static void
-gst_opencv_video_filter_base_init (gpointer gclass)
-{
-}
-
 static void
 gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass * klass)
 {
@@ -159,7 +152,7 @@ gst_opencv_video_filter_class_init (GstOpencvVideoFilterClass * klass)
 
 static void
 gst_opencv_video_filter_init (GstOpencvVideoFilter * transform,
-    GstOpencvVideoFilterClass * bclass)
+    GstOpencvVideoFilterClass * klass)
 {
 }
 
@@ -169,6 +162,8 @@ gst_opencv_video_filter_transform (GstBaseTransform * trans,
 {
   GstOpencvVideoFilter *transform;
   GstOpencvVideoFilterClass *fclass;
+  GstMapInfo in_info;
+  GstMapInfo out_info;
   GstFlowReturn ret;
 
   transform = GST_OPENCV_VIDEO_FILTER (trans);
@@ -178,16 +173,17 @@ gst_opencv_video_filter_transform (GstBaseTransform * trans,
   g_return_val_if_fail (transform->cvImage != NULL, GST_FLOW_ERROR);
   g_return_val_if_fail (transform->out_cvImage != NULL, GST_FLOW_ERROR);
 
-  transform->cvImage->imageData = (char *) gst_buffer_map (inbuf,
+  gst_buffer_map (inbuf, &in_info, GST_MAP_READ);
-      NULL, NULL, GST_MAP_READ);
+  transform->cvImage->imageData = (char *) in_info.data;
-  transform->out_cvImage->imageData = (char *) gst_buffer_map (outbuf,
+
-      NULL, NULL, GST_MAP_WRITE);
+  gst_buffer_map (outbuf, &out_info, GST_MAP_WRITE);
+  transform->out_cvImage->imageData = (char *) out_info.data;
 
   ret = fclass->cv_trans_func (transform, inbuf, transform->cvImage, outbuf,
       transform->out_cvImage);
 
-  gst_buffer_unmap (inbuf, transform->cvImage->imageData, -1);
+  gst_buffer_unmap (inbuf, &in_info);
-  gst_buffer_unmap (outbuf, transform->out_cvImage->imageData, -1);
+  gst_buffer_unmap (outbuf, &out_info);
 
   return ret;
 }
@@ -198,6 +194,7 @@ gst_opencv_video_filter_transform_ip (GstBaseTransform * trans,
 {
   GstOpencvVideoFilter *transform;
   GstOpencvVideoFilterClass *fclass;
+  GstMapInfo info;
   GstFlowReturn ret;
 
   transform = GST_OPENCV_VIDEO_FILTER (trans);
@@ -210,13 +207,13 @@ gst_opencv_video_filter_transform_ip (GstBaseTransform * trans,
    * level */
   buffer = gst_buffer_make_writable (buffer);
 
-  transform->cvImage->imageData = (char *) gst_buffer_map (buffer,
+  gst_buffer_map (buffer, &info, GST_MAP_READWRITE);
-      NULL, NULL, GST_MAP_READWRITE);
+  transform->cvImage->imageData = (char *) info.data;
 
   /* FIXME how to release buffer? */
   ret = fclass->cv_trans_ip_func (transform, buffer, transform->cvImage);
 
-  gst_buffer_unmap (buffer, transform->cvImage->imageData, -1);
+  gst_buffer_unmap (buffer, &info);
 
   return ret;
 }

ext/opencv/gstpyramidsegment.c

@@ -93,25 +93,26 @@ enum
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
-GST_BOILERPLATE (GstPyramidSegment, gst_pyramid_segment, GstElement,
+G_DEFINE_TYPE (GstPyramidSegment, gst_pyramid_segment, GST_TYPE_ELEMENT);
-    GST_TYPE_ELEMENT);
 
 static void gst_pyramid_segment_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
 static void gst_pyramid_segment_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
-static gboolean gst_pyramid_segment_set_caps (GstPad * pad, GstCaps * caps);
+static gboolean gst_pyramid_segment_handle_sink_event (GstPad * pad,
-static GstFlowReturn gst_pyramid_segment_chain (GstPad * pad, GstBuffer * buf);
+    GstObject * parent, GstEvent * event);
+static GstFlowReturn gst_pyramid_segment_chain (GstPad * pad,
+    GstObject * parent, GstBuffer * buf);
 
 /* Clean up */
 static void
@@ -124,26 +125,10 @@ gst_pyramid_segment_finalize (GObject * obj)
     cvReleaseImage (&filter->cvSegmentedImage);
   }
 
-  G_OBJECT_CLASS (parent_class)->finalize (obj);
+  G_OBJECT_CLASS (gst_pyramid_segment_parent_class)->finalize (obj);
 }
 
-/* GObject vmethod implementations */
-static void
-gst_pyramid_segment_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
 
-  gst_element_class_set_details_simple (element_class,
-      "pyramidsegment",
-      "Filter/Effect/Video",
-      "Applies pyramid segmentation to a video or image.",
-      "Michael Sheldon <mike@mikeasoft.com>");
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
-}
 
 /* initialize the pyramidsegment's class */
 static void
@@ -151,8 +136,8 @@ gst_pyramid_segment_class_init (GstPyramidSegmentClass * klass)
 {
   GObjectClass *gobject_class;
 
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   gobject_class = (GObjectClass *) klass;
-  parent_class = g_type_class_peek_parent (klass);
 
   gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_pyramid_segment_finalize);
   gobject_class->set_property = gst_pyramid_segment_set_property;
@@ -176,6 +161,17 @@ gst_pyramid_segment_class_init (GstPyramidSegmentClass * klass)
       g_param_spec_int ("level", "Level",
           "Maximum level of the pyramid segmentation", 0, 4, 4,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_set_details_simple (element_class,
+      "pyramidsegment",
+      "Filter/Effect/Video",
+      "Applies pyramid segmentation to a video or image.",
+      "Michael Sheldon <mike@mikeasoft.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the new element
@@ -184,20 +180,18 @@ gst_pyramid_segment_class_init (GstPyramidSegmentClass * klass)
  * initialize instance structure
  */
 static void
-gst_pyramid_segment_init (GstPyramidSegment * filter,
+gst_pyramid_segment_init (GstPyramidSegment * filter)
-    GstPyramidSegmentClass * gclass)
 {
   filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
-  gst_pad_set_setcaps_function (filter->sinkpad,
+  GST_PAD_SET_PROXY_CAPS (filter->sinkpad);
-      GST_DEBUG_FUNCPTR (gst_pyramid_segment_set_caps));
+
-  gst_pad_set_getcaps_function (filter->sinkpad,
+  gst_pad_set_event_function (filter->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
+      GST_DEBUG_FUNCPTR (gst_pyramid_segment_handle_sink_event));
   gst_pad_set_chain_function (filter->sinkpad,
       GST_DEBUG_FUNCPTR (gst_pyramid_segment_chain));
 
   filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
-  gst_pad_set_getcaps_function (filter->srcpad,
+  GST_PAD_SET_PROXY_CAPS (filter->srcpad);
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
 
   gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
   gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
@@ -264,39 +258,50 @@ gst_pyramid_segment_get_property (GObject * object, guint prop_id,
 
 /* this function handles the link with other elements */
 static gboolean
-gst_pyramid_segment_set_caps (GstPad * pad, GstCaps * caps)
+gst_pyramid_segment_handle_sink_event (GstPad * pad, GstObject * parent,
+    GstEvent * event)
 {
   GstPyramidSegment *filter;
-  GstPad *otherpad;
+  GstVideoInfo info;
-  GstStructure *structure;
+  gboolean res = TRUE;
-  gint width, height;
+  filter = GST_PYRAMID_SEGMENT (parent);
 
-  filter = GST_PYRAMID_SEGMENT (gst_pad_get_parent (pad));
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_CAPS:
+    {
+      GstCaps *caps;
+      gst_event_parse_caps (event, &caps);
+      gst_video_info_from_caps (&info, caps);
 
-  structure = gst_caps_get_structure (caps, 0);
+      filter->cvImage =
-  gst_structure_get_int (structure, "width", &width);
+          cvCreateImage (cvSize (info.width, info.height), IPL_DEPTH_8U, 3);
-  gst_structure_get_int (structure, "height", &height);
+      break;
+    }
+    default:
+      break;
+  }
 
-  filter->cvImage = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 3);
+  res = gst_pad_event_default (pad, parent, event);
 
-  otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
+  return res;
-  gst_object_unref (filter);
-
-  return gst_pad_set_caps (otherpad, caps);
 }
 
 /* chain function
  * this function does the actual processing
  */
 static GstFlowReturn
-gst_pyramid_segment_chain (GstPad * pad, GstBuffer * buf)
+gst_pyramid_segment_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
 {
   GstPyramidSegment *filter;
   GstBuffer *outbuf;
+  GstMapInfo info;
+  GstMapInfo outinfo;
 
   filter = GST_PYRAMID_SEGMENT (GST_OBJECT_PARENT (pad));
 
-  filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
+  buf = gst_buffer_make_writable (buf);
+  gst_buffer_map (buf, &info, GST_MAP_READWRITE);
+  filter->cvImage->imageData = (char *) info.data;
   filter->cvSegmentedImage = cvCloneImage (filter->cvImage);
 
   cvPyrSegmentation (filter->cvImage, filter->cvSegmentedImage, filter->storage,
@@ -306,14 +311,17 @@ gst_pyramid_segment_chain (GstPad * pad, GstBuffer * buf)
    * delete only the struct headers. Would avoid a memcpy here */
 
   outbuf = gst_buffer_new_and_alloc (filter->cvSegmentedImage->imageSize);
-  gst_buffer_copy_metadata (outbuf, buf, GST_BUFFER_COPY_ALL);
+  gst_buffer_copy_into (outbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
-  memcpy (GST_BUFFER_DATA (outbuf), filter->cvSegmentedImage->imageData,
+  gst_buffer_map (outbuf, &outinfo, GST_MAP_WRITE);
-      GST_BUFFER_SIZE (outbuf));
+  memcpy (outinfo.data, filter->cvSegmentedImage->imageData,
+      gst_buffer_get_size (outbuf));
 
+  gst_buffer_unmap (buf, &info);
   gst_buffer_unref (buf);
   cvReleaseImage (&filter->cvSegmentedImage);
   g_assert (filter->cvSegmentedImage == NULL);
 
+  gst_buffer_unmap (outbuf, &outinfo);
   return gst_pad_push (filter->srcpad, outbuf);
 }
 

ext/opencv/gsttemplatematch.c

@@ -91,17 +91,16 @@ enum
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
-GST_BOILERPLATE (GstTemplateMatch, gst_template_match, GstElement,
+G_DEFINE_TYPE (GstTemplateMatch, gst_template_match, GST_TYPE_ELEMENT);
-    GST_TYPE_ELEMENT);
 
 static void gst_template_match_finalize (GObject * object);
 static void gst_template_match_set_property (GObject * object, guint prop_id,
@@ -109,37 +108,23 @@ static void gst_template_match_set_property (GObject * object, guint prop_id,
 static void gst_template_match_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 
-static gboolean gst_template_match_set_caps (GstPad * pad, GstCaps * caps);
+static gboolean gst_template_match_handle_sink_event (GstPad * pad,
-static GstFlowReturn gst_template_match_chain (GstPad * pad, GstBuffer * buf);
+    GstObject * parent, GstEvent * event);
+static GstFlowReturn gst_template_match_chain (GstPad * pad, GstObject * parent,
+    GstBuffer * buf);
 
 static void gst_template_match_load_template (GstTemplateMatch * filter);
 static void gst_template_match_match (IplImage * input, IplImage * template,
     IplImage * dist_image, double *best_res, CvPoint * best_pos, int method);
 
-/* GObject vmethod implementations */
 
-static void
-gst_template_match_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_set_details_simple (element_class,
-      "templatematch",
-      "Filter/Effect/Video",
-      "Performs template matching on videos and images, providing detected positions via bus messages.",
-      "Noam Lewis <jones.noamle@gmail.com>");
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
-}
 
 /* initialize the templatematch's class */
 static void
 gst_template_match_class_init (GstTemplateMatchClass * klass)
 {
   GObjectClass *gobject_class;
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
 
   gobject_class = (GObjectClass *) klass;
 
@@ -158,6 +143,17 @@ gst_template_match_class_init (GstTemplateMatchClass * klass)
       g_param_spec_boolean ("display", "Display",
           "Sets whether the detected template should be highlighted in the output",
           TRUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_set_details_simple (element_class,
+      "templatematch",
+      "Filter/Effect/Video",
+      "Performs template matching on videos and images, providing detected positions via bus messages.",
+      "Noam Lewis <jones.noamle@gmail.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the new element
@@ -166,20 +162,15 @@ gst_template_match_class_init (GstTemplateMatchClass * klass)
  * initialize instance structure
  */
 static void
-gst_template_match_init (GstTemplateMatch * filter,
+gst_template_match_init (GstTemplateMatch * filter)
-    GstTemplateMatchClass * gclass)
 {
   filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
-  gst_pad_set_setcaps_function (filter->sinkpad,
+  gst_pad_set_event_function (filter->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_template_match_set_caps));
+      GST_DEBUG_FUNCPTR (gst_template_match_handle_sink_event));
-  gst_pad_set_getcaps_function (filter->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
   gst_pad_set_chain_function (filter->sinkpad,
       GST_DEBUG_FUNCPTR (gst_template_match_chain));
 
   filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
-  gst_pad_set_getcaps_function (filter->srcpad,
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
 
   gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
   gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
@@ -260,25 +251,35 @@ gst_template_match_get_property (GObject * object, guint prop_id,
 
 /* this function handles the link with other elements */
 static gboolean
-gst_template_match_set_caps (GstPad * pad, GstCaps * caps)
+gst_template_match_handle_sink_event (GstPad * pad, GstObject * parent,
+    GstEvent * event)
 {
   GstTemplateMatch *filter;
-  GstPad *otherpad;
+  GstVideoInfo info;
-  gint width, height;
+  gboolean res = TRUE;
-  GstStructure *structure;
 
-  filter = GST_TEMPLATE_MATCH (gst_pad_get_parent (pad));
+  filter = GST_TEMPLATE_MATCH (parent);
-  structure = gst_caps_get_structure (caps, 0);
+  switch (GST_EVENT_TYPE (event)) {
-  gst_structure_get_int (structure, "width", &width);
+    case GST_EVENT_CAPS:
-  gst_structure_get_int (structure, "height", &height);
+    {
+      GstCaps *caps;
+      gst_event_parse_caps (event, &caps);
+      gst_video_info_from_caps (&info, caps);
 
       filter->cvImage =
-      cvCreateImageHeader (cvSize (width, height), IPL_DEPTH_8U, 3);
+          cvCreateImageHeader (cvSize (info.width, info.height), IPL_DEPTH_8U,
+          3);
+      break;
+    }
+    default:
+      break;
+  }
+
+  res = gst_pad_event_default (pad, parent, event);
+
+  return res;
 
-  otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
-  gst_object_unref (filter);
 
-  return gst_pad_set_caps (otherpad, caps);
 }
 
 static void
@@ -297,29 +298,32 @@ gst_template_match_finalize (GObject * object)
     cvReleaseImage (&filter->cvTemplateImage);
   }
 
-  GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
+  G_OBJECT_CLASS (gst_template_match_parent_class)->finalize (object);
 }
 
 /* chain function
  * this function does the actual processing
  */
 static GstFlowReturn
-gst_template_match_chain (GstPad * pad, GstBuffer * buf)
+gst_template_match_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
 {
   GstTemplateMatch *filter;
   CvPoint best_pos;
   double best_res;
+  GstMapInfo info;
 
-  filter = GST_TEMPLATE_MATCH (GST_OBJECT_PARENT (pad));
+  filter = GST_TEMPLATE_MATCH (parent);
 
   /* FIXME Why template == NULL returns OK?
    * shouldn't it be a passthrough instead? */
   if ((!filter) || (!buf) || filter->template == NULL) {
     return GST_FLOW_OK;
   }
-  GST_DEBUG_OBJECT (filter, "Buffer size %u ", GST_BUFFER_SIZE (buf));
+  GST_DEBUG_OBJECT (filter, "Buffer size %u ", gst_buffer_get_size (buf));
 
-  filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
+  buf = gst_buffer_make_writable (buf);
+  gst_buffer_map (buf, &info, GST_MAP_READWRITE);
+  filter->cvImage->imageData = (char *) info.data;
 
   if (!filter->cvDistImage) {
     if (filter->cvTemplateImage->width > filter->cvImage->width) {

ext/opencv/gsttextoverlay.c

@@ -51,7 +51,7 @@
  * <refsect2>
  * <title>Example launch line</title>
  * |[
- * gst-launch-0.10 videotestsrc ! ffmpegcolorspace ! opencvtextoverlay text="Opencv Text Overlay " ! ffmpegcolorspace ! xvimagesink
+ * gst-launch-1.0 videotestsrc ! videoconvert ! opencvtextoverlay text="Opencv Text Overlay " ! videoconvert ! xvimagesink
  * ]|
  * </refsect2>
  */
@@ -68,7 +68,7 @@
 GST_DEBUG_CATEGORY_STATIC (gst_opencv_text_overlay_debug);
 #define GST_CAT_DEFAULT gst_opencv_opencv_text_overlay_debug
 
-#define DEFAULT_PROP_TEXT 	""
+#define DEFAULT_PROP_TEXT 	"Opencv Text Overlay"
 #define DEFAULT_PROP_WIDTH 	1
 #define DEFAULT_PROP_HEIGHT 	1
 #define DEFAULT_PROP_XPOS	50
@@ -106,28 +106,26 @@ enum
 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_SRC,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB)
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
     );
 
-GST_BOILERPLATE (GstOpencvTextOverlay, gst_opencv_text_overlay, GstElement,
+G_DEFINE_TYPE (GstOpencvTextOverlay, gst_opencv_text_overlay, GST_TYPE_ELEMENT);
-    GST_TYPE_ELEMENT);
 
 static void gst_opencv_text_overlay_set_property (GObject * object,
     guint prop_id, const GValue * value, GParamSpec * pspec);
 static void gst_opencv_text_overlay_get_property (GObject * object,
     guint prop_id, GValue * value, GParamSpec * pspec);
 
-static gboolean gst_opencv_text_overlay_set_caps (GstPad * pad, GstCaps * caps);
+static gboolean gst_opencv_text_overlay_handle_sink_event (GstPad * pad,
+    GstObject * parent, GstEvent * event);
 static GstFlowReturn gst_opencv_text_overlay_chain (GstPad * pad,
-    GstBuffer * buf);
+    GstObject * parent, GstBuffer * buf);
-
-
 
 /* Clean up */
 static void
@@ -139,27 +137,7 @@ gst_opencv_text_overlay_finalize (GObject * obj)
     cvReleaseImage (&filter->cvImage);
   }
 
-  G_OBJECT_CLASS (parent_class)->finalize (obj);
+  G_OBJECT_CLASS (gst_opencv_text_overlay_parent_class)->finalize (obj);
-}
-
-
-
-/* GObject vmethod implementations */
-
-static void
-gst_opencv_text_overlay_base_init (gpointer gclass)
-{
-  GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
-
-  gst_element_class_set_details_simple (element_class,
-      "opencvtextoverlay",
-      "Filter/Effect/Video",
-      "Write text on the top of video", "sreerenj<bsreerenj@gmail.com>");
-
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&src_factory));
-  gst_element_class_add_pad_template (element_class,
-      gst_static_pad_template_get (&sink_factory));
 }
 
 /* initialize the opencvtextoverlay's class */
@@ -168,16 +146,15 @@ gst_opencv_text_overlay_class_init (GstOpencvTextOverlayClass * klass)
 {
   GObjectClass *gobject_class;
 
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
   gobject_class = (GObjectClass *) klass;
 
-  parent_class = g_type_class_peek_parent (klass);
   gobject_class->finalize =
       GST_DEBUG_FUNCPTR (gst_opencv_text_overlay_finalize);
 
   gobject_class->set_property = gst_opencv_text_overlay_set_property;
   gobject_class->get_property = gst_opencv_text_overlay_get_property;
 
-
   g_object_class_install_property (gobject_class, PROP_TEXT,
       g_param_spec_string ("text", "text",
           "Text to be display.", DEFAULT_PROP_TEXT,
@@ -223,6 +200,16 @@ gst_opencv_text_overlay_class_init (GstOpencvTextOverlayClass * klass)
           "Sets the width of fonts", 1.0, 5.0,
           DEFAULT_WIDTH, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+  gst_element_class_set_details_simple (element_class,
+      "opencvtextoverlay",
+      "Filter/Effect/Video",
+      "Write text on the top of video", "sreerenj<bsreerenj@gmail.com>");
+
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&src_factory));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&sink_factory));
+
 }
 
 /* initialize the new element
@@ -231,23 +218,22 @@ gst_opencv_text_overlay_class_init (GstOpencvTextOverlayClass * klass)
  * initialize instance structure
  */
 static void
-gst_opencv_text_overlay_init (GstOpencvTextOverlay * filter,
+gst_opencv_text_overlay_init (GstOpencvTextOverlay * filter)
-    GstOpencvTextOverlayClass * gclass)
 {
   filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
-  gst_pad_set_setcaps_function (filter->sinkpad,
+  GST_PAD_SET_PROXY_CAPS (filter->sinkpad);
-      GST_DEBUG_FUNCPTR (gst_opencv_text_overlay_set_caps));
+  gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
-  gst_pad_set_getcaps_function (filter->sinkpad,
+
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
+  gst_pad_set_event_function (filter->sinkpad,
+      GST_DEBUG_FUNCPTR (gst_opencv_text_overlay_handle_sink_event));
+
   gst_pad_set_chain_function (filter->sinkpad,
       GST_DEBUG_FUNCPTR (gst_opencv_text_overlay_chain));
 
   filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
-  gst_pad_set_getcaps_function (filter->srcpad,
+  GST_PAD_SET_PROXY_CAPS (filter->srcpad);
-      GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
-
-  gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
   gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
+
   filter->textbuf = g_strdup (DEFAULT_PROP_TEXT);
   filter->width = DEFAULT_PROP_WIDTH;
   filter->height = DEFAULT_PROP_HEIGHT;
@@ -343,44 +329,59 @@ gst_opencv_text_overlay_get_property (GObject * object, guint prop_id,
   }
 }
 
-/* GstElement vmethod implementations */
-
-/* this function handles the link with other elements */
 static gboolean
-gst_opencv_text_overlay_set_caps (GstPad * pad, GstCaps * caps)
+gst_opencv_text_overlay_handle_sink_event (GstPad * pad, GstObject * parent,
+    GstEvent * event)
 {
   GstOpencvTextOverlay *filter;
-  GstPad *otherpad;
-
   gint width, height;
   GstStructure *structure;
+  gboolean res = TRUE;
 
-  filter = GST_OPENCV_TEXT_OVERLAY (gst_pad_get_parent (pad));
+  filter = GST_OPENCV_TEXT_OVERLAY (parent);
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_CAPS:
+    {
+      GstCaps *caps;
+      gst_event_parse_caps (event, &caps);
 
       structure = gst_caps_get_structure (caps, 0);
       gst_structure_get_int (structure, "width", &width);
       gst_structure_get_int (structure, "height", &height);
 
+      if (!filter->cvImage) {
         filter->cvImage = cvCreateImage (cvSize (width, height), IPL_DEPTH_8U, 3);
         filter->cvStorage = cvCreateMemStorage (0);
-
-  otherpad = (pad == filter->srcpad) ? filter->sinkpad : filter->srcpad;
-  gst_object_unref (filter);
-
-  return gst_pad_set_caps (otherpad, caps);
       }
+      break;
+    }
+    default:
+      break;
+  }
+
+  res = gst_pad_event_default (pad, parent, event);
+  return res;
+}
+
 
 /* chain function
  * this function does the actual processing
  */
 static GstFlowReturn
-gst_opencv_text_overlay_chain (GstPad * pad, GstBuffer * buf)
+gst_opencv_text_overlay_chain (GstPad * pad, GstObject * parent,
+    GstBuffer * buf)
 {
   GstOpencvTextOverlay *filter;
+  GstMapInfo map_info;
+  guint8 *data;
 
-  filter = GST_OPENCV_TEXT_OVERLAY (GST_OBJECT_PARENT (pad));
+  filter = GST_OPENCV_TEXT_OVERLAY (parent);
 
-  filter->cvImage->imageData = (char *) GST_BUFFER_DATA (buf);
+  gst_buffer_map (buf, &map_info, GST_MAP_READ);
+  data = map_info.data;
+
+  filter->cvImage->imageData = (char *) data;
 
   cvInitFont (&(filter->font), CV_FONT_VECTOR0, filter->width, filter->height,
       0, filter->thickness, 0);
@@ -390,6 +391,7 @@ gst_opencv_text_overlay_chain (GstPad * pad, GstBuffer * buf)
           filter->ypos), &(filter->font), cvScalar (filter->colorR,
           filter->colorG, filter->colorB, 0));
 
+  gst_buffer_unmap (buf, &map_info);
   return gst_pad_push (filter->srcpad, buf);
 }
 

ext/opencv/gsttextoverlay.h

@@ -47,7 +47,7 @@
 #define __GST_OPENCV_TEXT_OVERLAY_H__
 
 #include <gst/gst.h>
-
+#include "gstopencvutils.h"
 G_BEGIN_DECLS
 
 /* #defines don't like whitespacey bits */