Added some more components to port effectv

Original commit message from CVS:
Added some more components to port effectv

1 files changed, 302 insertions, 0 deletions

diff --git a/gst/effectv/gstedge.c b/gst/effectv/gstedge.c
new file mode 100644
index 00000000..b7e9dd92
--- /dev/null
+++ b/gst/effectv/gstedge.c
@@ -0,0 +1,302 @@
+/* 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.
+ */
+
+#include <string.h>
+#include <gst/gst.h>
+#include "gsteffectv.h"
+
+#define GST_TYPE_EFFECTV \
+  (gst_edgetv_get_type())
+#define GST_EFFECTV(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_EFFECTV,GstEdgeTV))
+#define GST_EFFECTV_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstEdgeTV))
+#define GST_IS_EFFECTV(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_EFFECTV))
+#define GST_IS_EFFECTV_CLASS(obj) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_EFFECTV))
+
+typedef struct _GstEdgeTV GstEdgeTV;
+typedef struct _GstEdgeTVClass GstEdgeTVClass;
+
+struct _GstEdgeTV
+{
+  GstElement element;
+
+  GstPad *sinkpad, *srcpad;
+
+  gint width, height;
+  gint map_width, map_height;
+  guint32 *map;
+  gint video_width_margin;
+};
+
+struct _GstEdgeTVClass
+{
+  GstElementClass parent_class;
+};
+
+GstElementDetails gst_edgetv_details = {
+  "EdgeTV",
+  "Filter/Effect",
+  "Aply edge detect on video",
+  VERSION,
+  "Wim Taymans <wim.taymans@chello.be>",
+  "(C) 2002",
+};
+
+
+/* Filter signals and args */
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  ARG_0,
+};
+
+static void gst_edgetv_class_init (GstEdgeTVClass * klass);
+static void gst_edgetv_init (GstEdgeTV * filter);
+
+static void gst_edgetv_set_property (GObject * object, guint prop_id,
+					   const GValue * value, GParamSpec * pspec);
+static void gst_edgetv_get_property (GObject * object, guint prop_id,
+					   GValue * value, GParamSpec * pspec);
+
+static void gst_edgetv_chain (GstPad * pad, GstBuffer * buf);
+
+static GstElementClass *parent_class = NULL;
+
+/*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
+
+GType gst_edgetv_get_type (void)
+{
+  static GType edgetv_type = 0;
+
+  if (!edgetv_type) {
+    static const GTypeInfo edgetv_info = {
+      sizeof (GstEdgeTVClass), NULL,
+      NULL,
+      (GClassInitFunc) gst_edgetv_class_init,
+      NULL,
+      NULL,
+      sizeof (GstEdgeTV),
+      0,
+      (GInstanceInitFunc) gst_edgetv_init,
+    };
+
+    edgetv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstEdgeTV", &edgetv_info, 0);
+  }
+  return edgetv_type;
+}
+
+static void
+gst_edgetv_class_init (GstEdgeTVClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+
+  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+  gobject_class->set_property = gst_edgetv_set_property;
+  gobject_class->get_property = gst_edgetv_get_property;
+}
+
+static GstPadConnectReturn
+gst_edgetv_sinkconnect (GstPad * pad, GstCaps * caps)
+{
+  GstEdgeTV *filter;
+
+  filter = GST_EFFECTV (gst_pad_get_parent (pad));
+
+  if (!GST_CAPS_IS_FIXED (caps))
+    return GST_PAD_CONNECT_DELAYED;
+
+  gst_caps_get_int (caps, "width", &filter->width);
+  gst_caps_get_int (caps, "height", &filter->height);
+
+  filter->map_width = filter->width / 4;
+  filter->map_height = filter->height / 4;
+  filter->video_width_margin = filter->width - filter->map_width * 4;
+
+  g_free (filter->map);
+  filter->map = (guint32 *)g_malloc (filter->map_width * filter->map_height * sizeof(guint32) * 2);
+  bzero(filter->map, filter->map_width * filter->map_height * sizeof(guint32) * 2);
+
+  if (gst_pad_try_set_caps (filter->srcpad, caps)) {
+    return GST_PAD_CONNECT_OK;
+  }
+
+  return GST_PAD_CONNECT_REFUSED;
+}
+
+static void
+gst_edgetv_init (GstEdgeTV * filter)
+{
+  filter->sinkpad = gst_pad_new_from_template (gst_effectv_sink_factory (), "sink");
+  gst_pad_set_chain_function (filter->sinkpad, gst_edgetv_chain);
+  gst_pad_set_connect_function (filter->sinkpad, gst_edgetv_sinkconnect);
+  gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
+
+  filter->srcpad = gst_pad_new_from_template (gst_effectv_src_factory (), "src");
+  gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
+
+  filter->map = NULL;
+}
+
+static void
+gst_edgetv_chain (GstPad * pad, GstBuffer * buf)
+{
+  GstEdgeTV *filter;
+  int x, y;
+  int r, g, b;
+  guint32 *src, *dest;
+  guint32 p, q;
+  guint32 v0, v1, v2, v3;
+  GstBuffer *outbuf;
+
+  filter = GST_EFFECTV (gst_pad_get_parent (pad));
+
+  src = (guint32 *) GST_BUFFER_DATA (buf);
+
+  outbuf = gst_buffer_new ();
+  GST_BUFFER_SIZE (outbuf) = (filter->width * filter->height * 4);
+  dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
+  GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
+  
+  src += filter->width * 4 + 4;
+  dest += filter->width * 4 + 4;
+  
+  for (y = 1; y < filter->map_height - 1; y++) {
+    for (x = 1; x < filter->map_width - 1; x++) {
+
+      p = *src;
+      q = *(src - 4);
+
+/* difference between the current pixel and right neighbor. */
+      r = ((p & 0xff0000) - (q & 0xff0000)) >> 16;
+      g = ((p & 0xff00) - (q & 0xff00)) >> 8;
+      b = (p & 0xff) - (q & 0xff);
+      r *= r;
+      g *= g;
+      b *= b;
+      r = r >> 5;		/* To lack the lower bit for saturated addition,  */
+      g = g >> 5;		/* devide the value with 32, instead of 16. It is */
+      b = b >> 4;		/* same as `v2 &= 0xfefeff' */
+      if (r > 127)
+	r = 127;
+      if (g > 127)
+	g = 127;
+      if (b > 255)
+	b = 255;
+      v2 = (r << 17) | (g << 9) | b;
+
+/* difference between the current pixel and upper neighbor. */
+      q = *(src - filter->width * 4);
+      r = ((p & 0xff0000) - (q & 0xff0000)) >> 16;
+      g = ((p & 0xff00) - (q & 0xff00)) >> 8;
+      b = (p & 0xff) - (q & 0xff);
+      r *= r;
+      g *= g;
+      b *= b;
+      r = r >> 5;
+      g = g >> 5;
+      b = b >> 4;
+      if (r > 127)
+	r = 127;
+      if (g > 127)
+	g = 127;
+      if (b > 255)
+	b = 255;
+      v3 = (r << 17) | (g << 9) | b;
+
+      v0 = filter->map[(y - 1) * filter->map_width * 2 + x * 2];
+      v1 = filter->map[y * filter->map_width * 2 + (x - 1) * 2 + 1];
+      filter->map[y * filter->map_width * 2 + x * 2] = v2;
+      filter->map[y * filter->map_width * 2 + x * 2 + 1] = v3;
+      r = v0 + v1;
+      g = r & 0x01010100;
+      dest[0] = r | (g - (g >> 8));
+      r = v0 + v3;
+      g = r & 0x01010100;
+      dest[1] = r | (g - (g >> 8));
+      dest[2] = v3;
+      dest[3] = v3;
+      r = v2 + v1;
+      g = r & 0x01010100;
+      dest[filter->width] = r | (g - (g >> 8));
+      r = v2 + v3;
+      g = r & 0x01010100;
+      dest[filter->width + 1] = r | (g - (g >> 8));
+      dest[filter->width + 2] = v3;
+      dest[filter->width + 3] = v3;
+      dest[filter->width * 2] = v2;
+      dest[filter->width * 2 + 1] = v2;
+      dest[filter->width * 3] = v2;
+      dest[filter->width * 3 + 1] = v2;
+
+      src += 4;
+      dest += 4;
+    }
+    src += filter->width * 3 + 8 + filter->video_width_margin;
+    dest += filter->width * 3 + 8 + filter->video_width_margin;
+  }
+  gst_buffer_unref (buf);
+
+  gst_pad_push (filter->srcpad, outbuf);
+}
+
+static void
+gst_edgetv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+  GstEdgeTV *filter;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail (GST_IS_EFFECTV (object));
+
+  filter = GST_EFFECTV (object);
+
+  switch (prop_id) {
+    default:
+      break;
+  }
+}
+
+static void
+gst_edgetv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
+{
+  GstEdgeTV *filter;
+
+  /* it's not null if we got it, but it might not be ours */
+  g_return_if_fail (GST_IS_EFFECTV (object));
+
+  filter = GST_EFFECTV (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}