--- /dev/null
+/* 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>
+
+#define GST_TYPE_EFFECTV \
+ (gst_effectv_get_type())
+#define GST_EFFECTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_EFFECTV,GstEffecTV))
+#define GST_EFFECTV_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstEffecTV))
+#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 _GstEffecTV GstEffecTV;
+typedef struct _GstEffecTVClass GstEffecTVClass;
+
+struct _GstEffecTV
+{
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ gint width, height;
+ gint map_width, map_height;
+ guint32 *map;
+ gint video_width_margin;
+};
+
+struct _GstEffecTVClass
+{
+ GstElementClass parent_class;
+};
+
+static GstElementDetails effectv_details = {
+ "EffecTV",
+ "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,
+};
+
+GST_PAD_TEMPLATE_FACTORY (effectv_src_factory,
+ "src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "effectv_src",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB ")),
+ "bpp", GST_PROPS_INT (32),
+ "depth", GST_PROPS_INT (32),
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "red_mask", GST_PROPS_INT (0xff0000),
+ "green_mask", GST_PROPS_INT (0xff00),
+ "blue_mask", GST_PROPS_INT (0xff),
+ "width", GST_PROPS_INT_RANGE (16, 4096),
+ "height", GST_PROPS_INT_RANGE (16, 4096)
+ )
+)
+
+GST_PAD_TEMPLATE_FACTORY (effectv_sink_factory,
+ "sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_CAPS_NEW (
+ "effectv_src",
+ "video/raw",
+ "format", GST_PROPS_FOURCC (GST_STR_FOURCC ("RGB ")),
+ "bpp", GST_PROPS_INT (32),
+ "depth", GST_PROPS_INT (32),
+ "endianness", GST_PROPS_INT (G_BYTE_ORDER),
+ "red_mask", GST_PROPS_INT (0xff0000),
+ "green_mask", GST_PROPS_INT (0xff00),
+ "blue_mask", GST_PROPS_INT (0xff),
+ "width", GST_PROPS_INT_RANGE (16, 4096),
+ "height", GST_PROPS_INT_RANGE (16, 4096)
+ )
+)
+
+static GType gst_effectv_get_type (void);
+
+static void gst_effectv_class_init (GstEffecTVClass * klass);
+static void gst_effectv_init (GstEffecTV * filter);
+
+static void gst_effectv_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_effectv_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_effectv_chain (GstPad * pad, GstBuffer * buf);
+
+static GstElementClass *parent_class = NULL;
+
+/*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
+
+ static GType gst_effectv_get_type (void)
+{
+ static GType effectv_type = 0;
+
+ if (!effectv_type) {
+ static const GTypeInfo effectv_info = {
+ sizeof (GstEffecTVClass), NULL,
+ NULL,
+ (GClassInitFunc) gst_effectv_class_init,
+ NULL,
+ NULL,
+ sizeof (GstEffecTV),
+ 0,
+ (GInstanceInitFunc) gst_effectv_init,
+ };
+
+ effectv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstEffecTV", &effectv_info, 0);
+ }
+ return effectv_type;
+}
+
+static void
+gst_effectv_class_init (GstEffecTVClass * 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_effectv_set_property;
+ gobject_class->get_property = gst_effectv_get_property;
+}
+
+static GstPadConnectReturn
+gst_effectv_sinkconnect (GstPad * pad, GstCaps * caps)
+{
+ GstEffecTV *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_effectv_init (GstEffecTV * filter)
+{
+ filter->sinkpad = gst_pad_new_from_template (effectv_sink_factory (), "sink");
+ gst_pad_set_chain_function (filter->sinkpad, gst_effectv_chain);
+ gst_pad_set_connect_function (filter->sinkpad, gst_effectv_sinkconnect);
+ gst_element_add_pad (GST_ELEMENT (filter), filter->sinkpad);
+
+ filter->srcpad = gst_pad_new_from_template (effectv_src_factory (), "src");
+ gst_element_add_pad (GST_ELEMENT (filter), filter->srcpad);
+
+ filter->map = NULL;
+}
+
+static void
+gst_effectv_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstEffecTV *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_effectv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstEffecTV *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_effectv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstEffecTV *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;
+ }
+}
+
+static gboolean
+plugin_init (GModule * module, GstPlugin * plugin)
+{
+ GstElementFactory *factory;
+
+ factory = gst_element_factory_new ("edgeTV", GST_TYPE_EFFECTV, &effectv_details);
+ g_return_val_if_fail (factory != NULL, FALSE);
+
+ gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (effectv_src_factory));
+ gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (effectv_sink_factory));
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "effectv",
+ plugin_init
+};
projects / platform / upstream / gst-plugins-good.git / commitdiff