--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+/*
+ * EffecTV - Realtime Digital Video Effector
+ * Copyright (C) 2001 FUKUCHI Kentarou
+ *
+ * From main.c of warp-1.1:
+ *
+ * Simple DirectMedia Layer demo
+ * Realtime picture 'gooing'
+ * Released under GPL
+ * by sam lantinga slouken@devolution.com
+ */
+
+#include <string.h>
+#include <math.h>
+#include <gst/gst.h>
+#include "gsteffectv.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#define GST_TYPE_WARPTV \
+ (gst_warptv_get_type())
+#define GST_WARPTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_WARPTV,GstWarpTV))
+#define GST_WARPTV_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstWarpTV))
+#define GST_IS_WARPTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_WARPTV))
+#define GST_IS_WARPTV_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_WARPTV))
+
+typedef struct _GstWarpTV GstWarpTV;
+typedef struct _GstWarpTVClass GstWarpTVClass;
+
+struct _GstWarpTV
+{
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ gint width, height;
+ gint *offstable;
+ gint32 *disttable;
+ gint32 ctable[1024];
+ gint32 sintable[1024+256];
+ gint tval;
+};
+
+struct _GstWarpTVClass
+{
+ GstElementClass parent_class;
+};
+
+GstElementDetails gst_warptv_details = {
+ "WarpTV",
+ "Filter/Effect",
+ "WarpTV does realtime goo'ing of the video input",
+ VERSION,
+ "Sam Lantinga <slouken@devolution.com>",
+ "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_warptv_class_init (GstWarpTVClass * klass);
+static void gst_warptv_init (GstWarpTV * filter);
+
+static void gst_warptv_initialize (GstWarpTV *filter);
+static void gst_warptv_dispose (GObject *object);
+
+static void gst_warptv_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_warptv_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_warptv_chain (GstPad * pad, GstBuffer * buf);
+
+static GstElementClass *parent_class = NULL;
+/*static guint gst_warptv_signals[LAST_SIGNAL] = { 0 }; */
+
+GType gst_warptv_get_type (void)
+{
+ static GType warptv_type = 0;
+
+ if (!warptv_type) {
+ static const GTypeInfo warptv_info = {
+ sizeof (GstWarpTVClass), NULL,
+ NULL,
+ (GClassInitFunc) gst_warptv_class_init,
+ NULL,
+ NULL,
+ sizeof (GstWarpTV),
+ 0,
+ (GInstanceInitFunc) gst_warptv_init,
+ };
+
+ warptv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstWarpTV", &warptv_info, 0);
+ }
+ return warptv_type;
+}
+
+static void
+gst_warptv_class_init (GstWarpTVClass * 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_warptv_set_property;
+ gobject_class->get_property = gst_warptv_get_property;
+ gobject_class->dispose = gst_warptv_dispose;
+}
+
+static GstPadConnectReturn
+gst_warptv_sinkconnect (GstPad * pad, GstCaps * caps)
+{
+ GstWarpTV *filter;
+
+ filter = GST_WARPTV (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);
+
+ gst_warptv_initialize (filter);
+
+ if (gst_pad_try_set_caps (filter->srcpad, caps)) {
+ return GST_PAD_CONNECT_OK;
+ }
+
+ return GST_PAD_CONNECT_REFUSED;
+}
+
+static void
+gst_warptv_init (GstWarpTV * filter)
+{
+ filter->sinkpad = gst_pad_new_from_template (gst_effectv_sink_factory (), "sink");
+ gst_pad_set_chain_function (filter->sinkpad, gst_warptv_chain);
+ gst_pad_set_connect_function (filter->sinkpad, gst_warptv_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->tval = 0;
+}
+
+
+static void
+initSinTable (GstWarpTV *filter)
+{
+ gint32 *tptr, *tsinptr;
+ double i;
+
+ tsinptr = tptr = filter->sintable;
+
+ for (i = 0; i < 1024; i++)
+ *tptr++ = (int) (sin (i * M_PI / 512) * 32767);
+
+ for (i = 0; i < 256; i++)
+ *tptr++ = *tsinptr++;
+}
+
+static void
+initOffsTable (GstWarpTV *filter)
+{
+ int y;
+
+ for (y = 0; y < filter->height; y++) {
+ filter->offstable[y] = y * filter->width;
+ }
+}
+
+static void
+initDistTable (GstWarpTV *filter)
+{
+ gint32 halfw, halfh, *distptr;
+#ifdef PS2
+ float x,y,m;
+#else
+ double x,y,m;
+#endif
+
+ halfw = filter->width>> 1;
+ halfh = filter->height >> 1;
+
+ distptr = filter->disttable;
+
+ m = sqrt ((double)(halfw * halfw + halfh * halfh));
+
+ for (y = -halfh; y < halfh; y++)
+ for (x= -halfw; x < halfw; x++)
+#ifdef PS2
+ *distptr++ = ((int) ((sqrtf (x * x + y * y) * 511.9999) / m)) << 1;
+#else
+ *distptr++ = ((int) ((sqrt (x * x + y * y) * 511.9999) / m)) << 1;
+#endif
+}
+
+static void
+gst_warptv_initialize (GstWarpTV *filter)
+{
+ filter->offstable = (guint32 *) g_malloc (filter->height * sizeof (guint32));
+ filter->disttable = g_malloc (filter->width * filter->height * sizeof (guint32));
+
+ initSinTable (filter);
+ initOffsTable (filter);
+ initDistTable (filter);
+}
+
+static void
+gst_warptv_dispose (GObject *object)
+{
+ GstWarpTV *filter = GST_WARPTV (object);
+
+ g_free (filter->disttable);
+ g_free (filter->offstable);
+}
+
+static void
+gst_warptv_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstWarpTV *filter;
+ guint32 *src, *dest;
+ gint xw,yw,cw;
+ GstBuffer *outbuf;
+ gint32 c,i, x,y, dx,dy, maxx, maxy;
+ gint32 width, height, skip, *ctptr, *distptr;
+ gint32 *sintable, *ctable;
+
+ filter = GST_WARPTV (gst_pad_get_parent (pad));
+
+ src = (guint32 *) GST_BUFFER_DATA (buf);
+
+ outbuf = gst_buffer_new ();
+ GST_BUFFER_SIZE (outbuf) = (filter->width * filter->height * sizeof(guint32));
+ dest = (guint32 *) GST_BUFFER_DATA (outbuf) = g_malloc (GST_BUFFER_SIZE (outbuf));
+ GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
+
+ xw = (gint) (sin ((filter->tval + 100) * M_PI / 128) * 30);
+ yw = (gint) (sin ((filter->tval) * M_PI / 256) * -35);
+ cw = (gint) (sin ((filter->tval - 70) * M_PI / 64) * 50);
+ xw += (gint) (sin ((filter->tval - 10) * M_PI / 512) * 40);
+ yw += (gint) (sin ((filter->tval + 30) * M_PI / 512) * 40);
+
+ ctptr = filter->ctable;
+ distptr = filter->disttable;
+ width = filter->width;
+ height = filter->height;
+ sintable = filter->sintable;
+ ctable = filter->ctable;
+
+ skip = 0 ; /* video_width*sizeof(RGB32)/4 - video_width;; */
+ c = 0;
+
+ for (x = 0; x < 512; x++) {
+ i = (c >> 3) & 0x3FE;
+ *ctptr++ = ((sintable[i] * yw) >> 15);
+ *ctptr++ = ((sintable[i + 256] * xw) >> 15);
+ c += cw;
+ }
+ maxx = width - 2; maxy = height - 2;
+
+ for (y = 0; y < height - 1; y++) {
+ for (x = 0; x < width; x++) {
+ i = *distptr++;
+ dx = ctable [i + 1] + x;
+ dy = ctable [i] + y;
+
+ if (dx < 0) dx = 0;
+ else if (dx > maxx) dx = maxx;
+
+ if (dy < 0) dy = 0;
+ else if (dy > maxy) dy = maxy;
+ *dest++ = src[filter->offstable[dy] + dx];
+ }
+ dest += skip;
+ }
+
+ filter->tval = (filter->tval + 1) & 511;
+
+ gst_buffer_unref (buf);
+
+ gst_pad_push (filter->srcpad, outbuf);
+}
+
+static void
+gst_warptv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstWarpTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_WARPTV (object));
+
+ filter = GST_WARPTV (object);
+
+ switch (prop_id) {
+ default:
+ break;
+ }
+}
+
+static void
+gst_warptv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstWarpTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_WARPTV (object));
+
+ filter = GST_WARPTV (object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
projects / platform / upstream / gst-plugins-good.git / commitdiff