From ee60c2cf986de8e885264aa19d639fd7aab6ff20 Mon Sep 17 00:00:00 2001
From: Luis de Bethencourt <luis@debethencourt.com>
Date: Wed, 9 May 2012 17:06:20 +0100
Subject: [PATCH] gaudieffects: port exclusion to GstVideoFilter

---
 gst/gaudieffects/gstexclusion.c | 68 +++++++++++++++--------------------------
 gst/gaudieffects/gstexclusion.h |  3 --
 2 files changed, 25 insertions(+), 46 deletions(-)

diff --git a/gst/gaudieffects/gstexclusion.c b/gst/gaudieffects/gstexclusion.c
index 460b624..87119e2 100644
--- a/gst/gaudieffects/gstexclusion.c
+++ b/gst/gaudieffects/gstexclusion.c
@@ -113,17 +113,17 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_STATIC_CAPS (CAPS_STR)
     );
 
+#define gst_exclusion_parent_class parent_class
 G_DEFINE_TYPE (GstExclusion, gst_exclusion, GST_TYPE_VIDEO_FILTER);
 
 static void gst_exclusion_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);
 static void gst_exclusion_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
+static void gst_exclusion_finalize (GObject * object);
 
-static gboolean gst_exclusion_set_caps (GstBaseTransform * btrans,
-    GstCaps * incaps, GstCaps * outcaps);
-static GstFlowReturn gst_exclusion_transform (GstBaseTransform * btrans,
-    GstBuffer * in_buf, GstBuffer * out_buf);
+static GstFlowReturn gst_exclusion_transform_frame (GstVideoFilter * vfilter,
+    GstVideoFrame * in_frame, GstVideoFrame * out_frame);
 
 /* GObject vmethod implementations */
 
@@ -133,7 +133,7 @@ gst_exclusion_class_init (GstExclusionClass * klass)
 {
   GObjectClass *gobject_class = (GObjectClass *) klass;
   GstElementClass *gstelement_class = (GstElementClass *) klass;
-  GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
+  GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
 
   gst_element_class_set_details_simple (gstelement_class, "Exclusion",
       "Filter/Effect/Video",
@@ -147,6 +147,7 @@ gst_exclusion_class_init (GstExclusionClass * klass)
 
   gobject_class->set_property = gst_exclusion_set_property;
   gobject_class->get_property = gst_exclusion_get_property;
+  gobject_class->finalize = gst_exclusion_finalize;
 
   g_object_class_install_property (gobject_class, PROP_FACTOR,
       g_param_spec_uint ("factor", "Factor",
@@ -157,8 +158,8 @@ gst_exclusion_class_init (GstExclusionClass * klass)
       g_param_spec_boolean ("silent", "Silent", "Produce verbose output ?",
           FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
-  trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_exclusion_set_caps);
-  trans_class->transform = GST_DEBUG_FUNCPTR (gst_exclusion_transform);
+  vfilter_class->transform_frame =
+      GST_DEBUG_FUNCPTR (gst_exclusion_transform_frame);
 }
 
 /* Initialize the element,
@@ -213,55 +214,36 @@ gst_exclusion_get_property (GObject * object, guint prop_id,
   GST_OBJECT_UNLOCK (filter);
 }
 
-/* GstElement vmethod implementations */
-/* Handle the link with other elements. */
-static gboolean
-gst_exclusion_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
-    GstCaps * outcaps)
+static void
+gst_exclusion_finalize (GObject * object)
 {
-  GstExclusion *exclusion = GST_EXCLUSION (btrans);
-  GstVideoInfo info;
-
-  if (!gst_video_info_from_caps (&info, incaps))
-    goto invalid_caps;
-
-  exclusion->info = info;
-
-  exclusion->width = GST_VIDEO_INFO_WIDTH (&info);
-  exclusion->height = GST_VIDEO_INFO_HEIGHT (&info);
-
-  return TRUE;
-
-  /* ERRORS */
-invalid_caps:
-  {
-    GST_DEBUG_OBJECT (btrans, "could not parse caps");
-    return FALSE;
-  }
+  G_OBJECT_CLASS (parent_class)->finalize (object);
 }
 
+/* GstElement vmethod implementations */
+
 /* Actual processing. */
 static GstFlowReturn
-gst_exclusion_transform (GstBaseTransform * btrans,
-    GstBuffer * in_buf, GstBuffer * out_buf)
+gst_exclusion_transform_frame (GstVideoFilter * vfilter,
+    GstVideoFrame * in_frame, GstVideoFrame * out_frame)
 {
-  GstExclusion *filter = GST_EXCLUSION (btrans);
-  gint video_size, factor;
+  GstExclusion *filter = GST_EXCLUSION (vfilter);
+  gint video_size, factor, width, height;
   guint32 *src, *dest;
   GstClockTime timestamp;
   gint64 stream_time;
-  GstVideoFrame in_frame, out_frame;
 
-  gst_video_frame_map (&in_frame, &filter->info, in_buf, GST_MAP_READ);
-  gst_video_frame_map (&out_frame, &filter->info, out_buf, GST_MAP_WRITE);
+  src = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
+  dest = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
 
-  src = GST_VIDEO_FRAME_PLANE_DATA (&in_frame, 0);
-  dest = GST_VIDEO_FRAME_PLANE_DATA (&out_frame, 0);
+  width = GST_VIDEO_FRAME_WIDTH (in_frame);
+  height = GST_VIDEO_FRAME_HEIGHT (in_frame);
 
   /* GstController: update the properties */
-  timestamp = GST_BUFFER_TIMESTAMP (in_buf);
+  timestamp = GST_BUFFER_TIMESTAMP (in_frame->buffer);
   stream_time =
-      gst_segment_to_stream_time (&btrans->segment, GST_FORMAT_TIME, timestamp);
+      gst_segment_to_stream_time (&GST_BASE_TRANSFORM (filter)->segment,
+      GST_FORMAT_TIME, timestamp);
 
   GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT,
       GST_TIME_ARGS (timestamp));
@@ -273,7 +255,7 @@ gst_exclusion_transform (GstBaseTransform * btrans,
   factor = filter->factor;
   GST_OBJECT_UNLOCK (filter);
 
-  video_size = filter->width * filter->height;
+  video_size = width * height;
   transform (src, dest, video_size, factor);
 
   return GST_FLOW_OK;
diff --git a/gst/gaudieffects/gstexclusion.h b/gst/gaudieffects/gstexclusion.h
index e628995..9e34c26 100644
--- a/gst/gaudieffects/gstexclusion.h
+++ b/gst/gaudieffects/gstexclusion.h
@@ -74,9 +74,6 @@ struct _GstExclusion
 
   /* < private > */
 
-  GstVideoInfo info;
-  gint width, height;
-
   gint factor;
   gboolean silent;
 };
-- 
2.7.4