--- /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.
+ */
+/*
+ * Inspired by Adrian Likin's script for the GIMP.
+ */
+
+#include <math.h>
+#include <string.h>
+#include <gst/gst.h>
+#include "gsteffectv.h"
+
+#define GST_TYPE_SHAGADELICTV \
+ (gst_shagadelictv_get_type())
+#define GST_SHAGADELICTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SHAGADELICTV,GstShagadelicTV))
+#define GST_SHAGADELICTV_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstShagadelicTV))
+#define GST_IS_SHAGADELICTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SHAGADELICTV))
+#define GST_IS_SHAGADELICTV_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SHAGADELICTV))
+
+typedef struct _GstShagadelicTV GstShagadelicTV;
+typedef struct _GstShagadelicTVClass GstShagadelicTVClass;
+
+struct _GstShagadelicTV
+{
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ gint width, height;
+ gint stat;
+ gchar *ripple;
+ gchar *spiral;
+ guchar phase;
+ gint rx, ry;
+ gint bx, by;
+ gint rvx, rvy;
+ gint bvx, bvy;
+};
+
+struct _GstShagadelicTVClass
+{
+ GstElementClass parent_class;
+};
+
+GstElementDetails gst_shagadelictv_details = {
+ "ShagadelicTV",
+ "Filter/Effect",
+ "Oh behave, ShagedelicTV makes images shagadelic!",
+ VERSION,
+ "Wim Taymans <wim.taymans@chello.be>",
+ "(C) 2001 FUKUCHI Kentarou",
+};
+
+
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+};
+
+static void gst_shagadelictv_class_init (GstShagadelicTVClass * klass);
+static void gst_shagadelictv_init (GstShagadelicTV * filter);
+
+static void gst_shagadelic_initialize (GstShagadelicTV *filter);
+
+static void gst_shagadelictv_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_shagadelictv_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_shagadelictv_chain (GstPad * pad, GstBuffer * buf);
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_shagadelictv_signals[LAST_SIGNAL] = { 0 }; */
+
+GType gst_shagadelictv_get_type (void)
+{
+ static GType shagadelictv_type = 0;
+
+ if (!shagadelictv_type) {
+ static const GTypeInfo shagadelictv_info = {
+ sizeof (GstShagadelicTVClass), NULL,
+ NULL,
+ (GClassInitFunc) gst_shagadelictv_class_init,
+ NULL,
+ NULL,
+ sizeof (GstShagadelicTV),
+ 0,
+ (GInstanceInitFunc) gst_shagadelictv_init,
+ };
+
+ shagadelictv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstShagadelicTV", &shagadelictv_info, 0);
+ }
+ return shagadelictv_type;
+}
+
+static void
+gst_shagadelictv_class_init (GstShagadelicTVClass * 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_shagadelictv_set_property;
+ gobject_class->get_property = gst_shagadelictv_get_property;
+}
+
+static GstPadConnectReturn
+gst_shagadelictv_sinkconnect (GstPad * pad, GstCaps * caps)
+{
+ GstShagadelicTV *filter;
+ gint area;
+
+ filter = GST_SHAGADELICTV (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->ripple);
+ g_free (filter->spiral);
+
+ filter->ripple = (gchar *) g_malloc (area * 4);
+ filter->spiral = (gchar *) g_malloc (area);
+
+ gst_shagadelic_initialize (filter);
+
+ if (gst_pad_try_set_caps (filter->srcpad, caps)) {
+ return GST_PAD_CONNECT_OK;
+ }
+
+ return GST_PAD_CONNECT_REFUSED;
+}
+
+static void
+gst_shagadelictv_init (GstShagadelicTV * filter)
+{
+ filter->sinkpad = gst_pad_new_from_template (gst_effectv_sink_factory (), "sink");
+ gst_pad_set_chain_function (filter->sinkpad, gst_shagadelictv_chain);
+ gst_pad_set_connect_function (filter->sinkpad, gst_shagadelictv_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->ripple = NULL;
+ filter->spiral = NULL;
+}
+
+static unsigned int
+fastrand (void)
+{
+ static unsigned int fastrand_val;
+
+ return (fastrand_val = fastrand_val * 1103515245 + 12345);
+}
+
+static void
+gst_shagadelic_initialize (GstShagadelicTV *filter)
+{
+ int i, x, y;
+#ifdef PS2
+ float xx, yy;
+#else
+ double xx, yy;
+#endif
+
+ i = 0;
+ for(y = 0; y < filter->height * 2; y++) {
+ yy = y - filter->height;
+ yy *= yy;
+
+ for (x = 0; x < filter->width * 2; x++) {
+ xx = x - filter->width;
+#ifdef PS2
+ filter->ripple[i++] = ((unsigned int)(sqrtf(xx*xx+yy)*8))&255;
+#else
+ filter->ripple[i++] = ((unsigned int)(sqrt(xx*xx+yy)*8))&255;
+#endif
+ }
+ }
+
+ i = 0;
+ for (y = 0; y < filter->height; y++) {
+ yy = y - filter->height/2;
+
+ for (x = 0; x < filter->width; x++) {
+ xx = x - filter->width/2;
+#ifdef PS2
+ filter->spiral[i++] = ((unsigned int)
+ ((atan2f(xx, yy)/((float)M_PI)*256*9) + (sqrtf(xx*xx+yy*yy)*5)))&255;
+#else
+ filter->spiral[i++] = ((unsigned int)
+ ((atan2(xx, yy)/M_PI*256*9) + (sqrt(xx*xx+yy*yy)*5)))&255;
+#endif
+/* Here is another Swinger!
+ * ((atan2(xx, yy)/M_PI*256) + (sqrt(xx*xx+yy*yy)*10))&255;
+ */
+ }
+ }
+ filter->rx = fastrand () % filter->width;
+ filter->ry = fastrand () % filter->height;
+ filter->bx = fastrand () % filter->width;
+ filter->by = fastrand () % filter->height;
+ filter->rvx = -2;
+ filter->rvy = -2;
+ filter->bvx = 2;
+ filter->bvy = 2;
+ filter->phase = 0;
+}
+
+int shagadelicDraw()
+{
+ return 0;
+}
+static void
+gst_shagadelictv_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstShagadelicTV *filter;
+ guint32 *src, *dest;
+ GstBuffer *outbuf;
+ gint x, y;
+ guint32 v;
+ guchar r, g, b;
+ gint width, height;
+
+ filter = GST_SHAGADELICTV (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);
+
+ width = filter->width;
+ height = filter->height;
+
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x++) {
+ v = *src++ | 0x1010100;
+ v = (v - 0x707060) & 0x1010100;
+ v -= v >> 8;
+/* Try another Babe!
+ * v = *src++;
+ * *dest++ = v & ((r<<16)|(g<<8)|b);
+ */
+ r = (gchar) (filter->ripple[(filter->ry + y) * width * 2 + filter->rx + x] + filter->phase * 2) >> 7;
+ g = (gchar) (filter->spiral[y * width + x] + filter->phase * 3) >> 7;
+ b = (gchar) (filter->ripple[(filter->by + y) * width * 2 + filter->bx + x] - filter->phase) >> 7;
+ *dest++ = v & ((r << 16) | (g << 8) | b);
+ }
+ }
+
+ filter->phase -= 8;
+ if ((filter->rx + filter->rvx) < 0 || (filter->rx + filter->rvx) >= width) filter->rvx =- filter->rvx;
+ if ((filter->ry + filter->rvy) < 0 || (filter->ry + filter->rvy) >= height) filter->rvy =- filter->rvy;
+ if ((filter->bx + filter->bvx) < 0 || (filter->bx + filter->bvx) >= width) filter->bvx =- filter->bvx;
+ if ((filter->by + filter->bvy) < 0 || (filter->by + filter->bvy) >= height) filter->bvy =- filter->bvy;
+ filter->rx += filter->rvx;
+ filter->ry += filter->rvy;
+ filter->bx += filter->bvx;
+ filter->by += filter->bvy;
+
+ gst_buffer_unref (buf);
+
+ gst_pad_push (filter->srcpad, outbuf);
+}
+
+static void
+gst_shagadelictv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstShagadelicTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_SHAGADELICTV (object));
+
+ filter = GST_SHAGADELICTV (object);
+
+ switch (prop_id) {
+ default:
+ break;
+ }
+}
+
+static void
+gst_shagadelictv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstShagadelicTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_SHAGADELICTV (object));
+
+ filter = GST_SHAGADELICTV (object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
projects / platform / upstream / gst-plugins-good.git / commitdiff