videomedian: copy media to videomedian

Copy the median video filter to videofilters and rename to
videomedian.

4 files changed, 393 insertions, 3 deletions

diff --git a/gst/videofilter/Makefile.am b/gst/videofilter/Makefile.am
index 4a7b9d9a7..0422e1214 100644
--- a/gst/videofilter/Makefile.am
+++ b/gst/videofilter/Makefile.am
@@ -1,6 +1,6 @@
 plugin_LTLIBRARIES = libgstvideofilter.la
 
-noinst_HEADERS = gstvideoflip.h gstvideobalance.h gstgamma.h
+noinst_HEADERS = gstvideoflip.h gstvideobalance.h gstgamma.h gstvideomedian.h
 
 EXTRA_DIST = gstvideotemplate.c make_filter
 CLEANFILES = gstvideoexample.c
@@ -8,7 +8,8 @@ CLEANFILES = gstvideoexample.c
 libgstvideofilter_la_SOURCES = plugin.c \
 			gstvideoflip.c \
 			gstvideobalance.c \
-			gstgamma.c
+			gstgamma.c \
+			gstvideomedian.c
 libgstvideofilter_la_CFLAGS = $(GST_CFLAGS) \
 			$(GST_BASE_CFLAGS) \
 			$(GST_PLUGINS_BASE_CFLAGS)
diff --git a/gst/videofilter/gstvideomedian.c b/gst/videofilter/gstvideomedian.c
new file mode 100644
index 000000000..0d837cd17
--- /dev/null
+++ b/gst/videofilter/gstvideomedian.c
@@ -0,0 +1,318 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <string.h>
+#include "gstvideomedian.h"
+
+static GstStaticPadTemplate video_median_src_factory =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12 }"))
+    );
+
+static GstStaticPadTemplate video_median_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12 }"))
+    );
+
+
+/* Median signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  PROP_0,
+  PROP_ACTIVE,
+  PROP_FILTERSIZE,
+  PROP_LUM_ONLY
+};
+
+#define gst_video_median_parent_class parent_class
+G_DEFINE_TYPE (GstVideoMedian, gst_video_median, GST_TYPE_VIDEO_FILTER);
+
+static GstFlowReturn gst_video_median_transform_frame (GstVideoFilter * filter,
+    GstVideoFrame * in_frame, GstVideoFrame * out_frame);
+
+static void gst_video_median_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_video_median_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void
+gst_video_median_class_init (GstVideoMedianClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstVideoFilterClass *vfilter_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  vfilter_class = (GstVideoFilterClass *) klass;
+
+  gobject_class->set_property = gst_video_median_set_property;
+  gobject_class->get_property = gst_video_median_get_property;
+
+  /* FIXME: add long property descriptions */
+  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ACTIVE,
+      g_param_spec_boolean ("active", "active", "active", TRUE,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILTERSIZE,
+      g_param_spec_int ("filtersize", "filtersize", "filtersize", G_MININT,
+          G_MAXINT, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LUM_ONLY,
+      g_param_spec_boolean ("lum-only", "lum-only", "lum-only", TRUE,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+  gst_element_class_add_pad_template (gstelement_class,
+      gst_static_pad_template_get (&video_median_sink_factory));
+  gst_element_class_add_pad_template (gstelement_class,
+      gst_static_pad_template_get (&video_median_src_factory));
+  gst_element_class_set_static_metadata (gstelement_class, "Median effect",
+      "Filter/Effect/Video",
+      "Apply a median filter to an image",
+      "Wim Taymans <wim.taymans@gmail.com>");
+
+  vfilter_class->transform_frame =
+      GST_DEBUG_FUNCPTR (gst_video_median_transform_frame);
+}
+
+void
+gst_video_median_init (GstVideoMedian * median)
+{
+  median->filtersize = 5;
+  median->lum_only = TRUE;
+  median->active = TRUE;
+}
+
+#define PIX_SORT(a,b) { if ((a)>(b)) PIX_SWAP((a),(b)); }
+#define PIX_SWAP(a,b) { unsigned char temp=(a);(a)=(b);(b)=temp; }
+
+static void
+median_5 (guint8 * dest, gint dstride, const guint8 * src, gint sstride,
+    gint width, gint height)
+{
+  unsigned char p[5];
+  int i, j, k;
+
+  /* copy the top and bottom rows into the result array */
+  for (i = 0; i < width; i++) {
+    dest[i] = src[i];
+    dest[(height - 1) * dstride + i] = src[(height - 1) * sstride + i];
+  }
+
+  /* process the interior pixels */
+  for (k = 2; k < height; k++) {
+    dest += dstride;
+    src += sstride;
+
+    dest[0] = src[0];
+    for (j = 2, i = 1; j < width; j++, i++) {
+      p[0] = src[i - sstride];
+      p[1] = src[i - 1];
+      p[2] = src[i];
+      p[3] = src[i + 1];
+      p[4] = src[i + sstride];
+      PIX_SORT (p[0], p[1]);
+      PIX_SORT (p[3], p[4]);
+      PIX_SORT (p[0], p[3]);
+      PIX_SORT (p[1], p[4]);
+      PIX_SORT (p[1], p[2]);
+      PIX_SORT (p[2], p[3]);
+      PIX_SORT (p[1], p[2]);
+      dest[i] = p[2];
+    }
+    dest[i] = src[i];
+  }
+}
+
+static void
+median_9 (guint8 * dest, gint dstride, const guint8 * src, gint sstride,
+    gint width, gint height)
+{
+  unsigned char p[9];
+  int i, j, k;
+
+  /*copy the top and bottom rows into the result array */
+  for (i = 0; i < width; i++) {
+    dest[i] = src[i];
+    dest[(height - 1) * dstride + i] = src[(height - 1) * sstride + i];
+  }
+  /* process the interior pixels */
+  for (k = 2; k < height; k++) {
+    dest += dstride;
+    src += sstride;
+
+    dest[0] = src[0];
+    for (j = 2, i = 1; j < width; j++, i++) {
+      p[0] = src[i - sstride - 1];
+      p[1] = src[i - sstride];
+      p[2] = src[i - sstride + 1];
+      p[3] = src[i - 1];
+      p[4] = src[i];
+      p[5] = src[i + 1];
+      p[6] = src[i + sstride - 1];
+      p[7] = src[i + sstride];
+      p[8] = src[i + sstride + 1];
+      PIX_SORT (p[1], p[2]);
+      PIX_SORT (p[4], p[5]);
+      PIX_SORT (p[7], p[8]);
+      PIX_SORT (p[0], p[1]);
+      PIX_SORT (p[3], p[4]);
+      PIX_SORT (p[6], p[7]);
+      PIX_SORT (p[1], p[2]);
+      PIX_SORT (p[4], p[5]);
+      PIX_SORT (p[7], p[8]);
+      PIX_SORT (p[0], p[3]);
+      PIX_SORT (p[5], p[8]);
+      PIX_SORT (p[4], p[7]);
+      PIX_SORT (p[3], p[6]);
+      PIX_SORT (p[1], p[4]);
+      PIX_SORT (p[2], p[5]);
+      PIX_SORT (p[4], p[7]);
+      PIX_SORT (p[4], p[2]);
+      PIX_SORT (p[6], p[4]);
+      PIX_SORT (p[4], p[2]);
+      dest[i] = p[4];
+    }
+    dest[i] = src[i];
+  }
+}
+
+static GstFlowReturn
+gst_video_median_transform_frame (GstVideoFilter * filter,
+    GstVideoFrame * in_frame, GstVideoFrame * out_frame)
+{
+  GstVideoMedian *median = GST_VIDEO_MEDIAN (filter);
+
+  if (median->filtersize == 5) {
+    median_5 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0),
+        GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0),
+        GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0),
+        GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0),
+        GST_VIDEO_FRAME_WIDTH (in_frame), GST_VIDEO_FRAME_HEIGHT (in_frame));
+
+    if (median->lum_only) {
+      gst_video_frame_copy_plane (out_frame, in_frame, 1);
+      gst_video_frame_copy_plane (out_frame, in_frame, 2);
+    } else {
+      median_5 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 1),
+          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 1),
+          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 1),
+          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1),
+          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
+          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
+      median_5 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 2),
+          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 2),
+          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 2),
+          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 2),
+          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
+          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
+    }
+  } else {
+    median_9 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0),
+        GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0),
+        GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0),
+        GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0),
+        GST_VIDEO_FRAME_WIDTH (in_frame), GST_VIDEO_FRAME_HEIGHT (in_frame));
+
+    if (median->lum_only) {
+      gst_video_frame_copy_plane (out_frame, in_frame, 1);
+      gst_video_frame_copy_plane (out_frame, in_frame, 2);
+    } else {
+      median_9 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 1),
+          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 1),
+          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 1),
+          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1),
+          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
+          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
+      median_9 (GST_VIDEO_FRAME_PLANE_DATA (out_frame, 2),
+          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 2),
+          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 2),
+          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 2),
+          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
+          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
+    }
+  }
+
+  return GST_FLOW_OK;
+}
+
+static void
+gst_video_median_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstVideoMedian *median;
+  gint argvalue;
+
+  median = GST_VIDEO_MEDIAN (object);
+
+  switch (prop_id) {
+    case PROP_FILTERSIZE:
+      argvalue = g_value_get_int (value);
+      if (argvalue != 5 && argvalue != 9) {
+        g_warning ("median: invalid filtersize (%d), must be 5 or 9\n",
+            argvalue);
+      } else {
+        median->filtersize = argvalue;
+      }
+      break;
+    case PROP_ACTIVE:
+      median->active = g_value_get_boolean (value);
+      break;
+    case PROP_LUM_ONLY:
+      median->lum_only = g_value_get_boolean (value);
+      break;
+    default:
+      break;
+  }
+}
+
+static void
+gst_video_median_get_property (GObject * object, guint prop_id, GValue * value,
+    GParamSpec * pspec)
+{
+  GstVideoMedian *median;
+
+  median = GST_VIDEO_MEDIAN (object);
+
+  switch (prop_id) {
+    case PROP_FILTERSIZE:
+      g_value_set_int (value, median->filtersize);
+      break;
+    case PROP_ACTIVE:
+      g_value_set_boolean (value, median->active);
+      break;
+    case PROP_LUM_ONLY:
+      g_value_set_boolean (value, median->lum_only);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
diff --git a/gst/videofilter/gstvideomedian.h b/gst/videofilter/gstvideomedian.h
new file mode 100644
index 000000000..432ab7ee6
--- /dev/null
+++ b/gst/videofilter/gstvideomedian.h
@@ -0,0 +1,68 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#ifndef __GST_VIDEO_MEDIAN_H__
+#define __GST_VIDEO_MEDIAN_H__
+
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gst/video/gstvideofilter.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_VIDEO_MEDIAN \
+  (gst_video_median_get_type())
+#define GST_VIDEO_MEDIAN(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_MEDIAN,GstVideoMedian))
+#define GST_VIDEO_MEDIAN_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_MEDIAN,GstVideoMedianClass))
+#define GST_IS_VIDEO_MEDIAN(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_MEDIAN))
+#define GST_IS_VIDEO_MEDIAN_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_MEDIAN))
+
+typedef struct _GstVideoMedian GstVideoMedian;
+typedef struct _GstVideoMedianClass GstVideoMedianClass;
+
+struct _GstVideoMedian {
+  GstVideoFilter parent;
+
+  int format;
+  int width;
+  int height;
+
+  int filtersize;
+
+  gboolean active;
+  gboolean lum_only;
+
+  GstPad *sinkpad,*srcpad;
+};
+
+struct _GstVideoMedianClass {
+  GstVideoFilterClass parent_class;
+};
+
+GType gst_video_median_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_VIDEO_MEDIAN_H__ */
diff --git a/gst/videofilter/plugin.c b/gst/videofilter/plugin.c
index 212c3a504..306c3a325 100644
--- a/gst/videofilter/plugin.c
+++ b/gst/videofilter/plugin.c
@@ -26,6 +26,7 @@
 #include "gstgamma.h"
 #include "gstvideoflip.h"
 #include "gstvideobalance.h"
+#include "gstvideomedian.h"
 
 static gboolean
 plugin_init (GstPlugin * plugin)
@@ -34,7 +35,9 @@ plugin_init (GstPlugin * plugin)
       && gst_element_register (plugin, "videobalance", GST_RANK_NONE,
           GST_TYPE_VIDEO_BALANCE)
       && gst_element_register (plugin, "videoflip", GST_RANK_NONE,
-          GST_TYPE_VIDEO_FLIP));
+          GST_TYPE_VIDEO_FLIP)
+      && gst_element_register (plugin, "videomedian", GST_RANK_NONE,
+          GST_TYPE_VIDEO_MEDIAN));
 }
 
 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,