--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * EffecTV:
+ * Copyright (C) 2001 FUKUCHI Kentarou
+ *
+ * EffecTV is free software. We release this product under the terms of the
+ * GNU General Public License version 2. The license is included in the file
+ * COPYING.
+ *
+ * This program 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 General Public License for more details.
+ */
+
+#include <math.h>
+#include <string.h>
+#include <gst/gst.h>
+#include "gsteffectv.h"
+
+#define GST_TYPE_QUARKTV \
+ (gst_quarktv_get_type())
+#define GST_QUARKTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QUARKTV,GstQuarkTV))
+#define GST_QUARKTV_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstQuarkTV))
+#define GST_IS_QUARKTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QUARKTV))
+#define GST_IS_QUARKTV_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QUARKTV))
+
+/* number of frames of time-buffer. It should be as a configurable paramter */
+/* This number also must be 2^n just for the speed. */
+#define PLANES 16
+
+typedef struct _GstQuarkTV GstQuarkTV;
+typedef struct _GstQuarkTVClass GstQuarkTVClass;
+
+struct _GstQuarkTV
+{
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ gint width, height;
+ gint planes;
+ gint current_plane;
+ guint32 *buffer;
+ guint32 **planetable;
+};
+
+struct _GstQuarkTVClass
+{
+ GstElementClass parent_class;
+};
+
+GstElementDetails gst_quarktv_details = {
+ "QuarkTV",
+ "Filter/Effect",
+ "Motion disolver",
+ VERSION,
+ "FUKUCHI, Kentarou <fukuchi@users.sourceforge.net>",
+ "(C) 2001 FUKUCHI Kentarou",
+};
+
+
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+ ARG_PLANES,
+};
+
+static void gst_quarktv_class_init (GstQuarkTVClass * klass);
+static void gst_quarktv_init (GstQuarkTV * filter);
+static void gst_quarktv_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_quarktv_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+/* static void gst_quarktv_reset_handler (GstElement *element); */
+
+static void gst_quarktv_chain (GstPad * pad, GstBuffer * buf);
+
+static GstElementClass *parent_class = NULL;
+/* static guint gst_quarktv_signals[LAST_SIGNAL] = { 0 }; */
+
+static unsigned int
+fastrand (void)
+{
+ static unsigned int fastrand_val;
+
+ return (fastrand_val = fastrand_val * 1103515245 + 12345);
+}
+
+GType gst_quarktv_get_type (void)
+{
+ static GType quarktv_type = 0;
+
+ if (!quarktv_type) {
+ static const GTypeInfo quarktv_info = {
+ sizeof (GstQuarkTVClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_quarktv_class_init,
+ NULL,
+ NULL,
+ sizeof (GstQuarkTV),
+ 0,
+ (GInstanceInitFunc) gst_quarktv_init,
+ };
+
+ quarktv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstQuarkTV", &quarktv_info, 0);
+ }
+ return quarktv_type;
+}
+
+static void
+gst_quarktv_class_init (GstQuarkTVClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PLANES,
+ g_param_spec_int ("planes","Planes","Number of frames in the buffer",
+ 1, 32, PLANES, G_PARAM_READWRITE));
+
+ gobject_class->set_property = gst_quarktv_set_property;
+ gobject_class->get_property = gst_quarktv_get_property;
+}
+
+static GstPadConnectReturn
+gst_quarktv_sinkconnect (GstPad * pad, GstCaps * caps)
+{
+ GstQuarkTV *filter;
+ gint area;
+ gint i;
+
+ filter = GST_QUARKTV (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);
+
+ area = filter->width * filter->height;
+
+ g_free (filter->buffer);
+ filter->buffer = (guint32 *) g_malloc (area * filter->planes * sizeof(guint32));
+ g_free (filter->planetable);
+ filter->planetable = (guint32 **) g_malloc(filter->planes * sizeof(guint32 *));
+
+ bzero (filter->buffer, area * filter->planes * sizeof(guint32));
+ for(i = 0; i < filter->planes; i++) {
+ filter->planetable[i] = &(filter->buffer[area * i]);
+ }
+
+ if (gst_pad_try_set_caps (filter->srcpad, caps)) {
+ return GST_PAD_CONNECT_OK;
+ }
+
+ return GST_PAD_CONNECT_REFUSED;
+}
+
+static void
+gst_quarktv_init (GstQuarkTV * filter)
+{
+ filter->sinkpad = gst_pad_new_from_template (gst_effectv_sink_factory (), "sink");
+ gst_pad_set_chain_function (filter->sinkpad, gst_quarktv_chain);
+ gst_pad_set_connect_function (filter->sinkpad, gst_quarktv_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->planes = PLANES;
+ filter->current_plane = filter->planes - 1;
+ filter->buffer = NULL;
+ filter->planetable = NULL;
+}
+
+static void
+gst_quarktv_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstQuarkTV *filter;
+ guint32 *src, *dest;
+ GstBuffer *outbuf;
+ gint area;
+ gint i;
+ gint cf;
+
+ filter = GST_QUARKTV (gst_pad_get_parent (pad));
+
+ src = (guint32 *) GST_BUFFER_DATA (buf);
+
+ area = filter->width * filter->height;
+
+ outbuf = gst_buffer_new ();
+ GST_BUFFER_SIZE (outbuf) = area * sizeof(guint32);
+ dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
+ GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
+
+ memcpy (filter->planetable[filter->current_plane], src, area * sizeof(guint32));
+
+ for (i = area - 1; i >= 0; i--) {
+ cf = (filter->current_plane + (fastrand () >> 24)) & (filter->planes - 1);
+ dest[i] = (filter->planetable[cf])[i];
+ }
+
+ gst_buffer_unref (buf);
+
+ gst_pad_push (filter->srcpad, outbuf);
+
+ filter->current_plane--;
+
+ if (filter->current_plane < 0)
+ filter->current_plane = filter->planes - 1;
+}
+
+static void
+gst_quarktv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstQuarkTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_QUARKTV (object));
+
+ filter = GST_QUARKTV (object);
+
+ switch (prop_id) {
+ case ARG_PLANES:
+ filter->planes = g_value_get_int (value);
+ filter->current_plane = filter->planes - 1;
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_quarktv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstQuarkTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_QUARKTV (object));
+
+ filter = GST_QUARKTV (object);
+
+ switch (prop_id) {
+ case ARG_PLANES:
+ g_value_set_int (value, filter->planes);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
projects / platform / upstream / gst-plugins-good.git / commitdiff