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authorWim Taymans <wim.taymans@gmail.com>2002-04-24 23:09:13 +0000
committerWim Taymans <wim.taymans@gmail.com>2002-04-24 23:09:13 +0000
commit0f4d96ce68be9c504d975aa07c143053b5886be6 (patch)
treece69732a01b0a6e8c2454324417521ea69ab0271 /gst
parentad06345b2ac579573e42e95402cfa475590a6fa7 (diff)
Vertigo is another cool one
Original commit message from CVS: Vertigo is another cool one
Diffstat (limited to 'gst')
-rw-r--r--gst/effectv/Makefile.am2
-rw-r--r--gst/effectv/gstdice.c6
-rw-r--r--gst/effectv/gsteffectv.c1
-rw-r--r--gst/effectv/gsteffectv.h3
-rw-r--r--gst/effectv/gstvertigo.c358
5 files changed, 366 insertions, 4 deletions
diff --git a/gst/effectv/Makefile.am b/gst/effectv/Makefile.am
index 6cddf440..206a8851 100644
--- a/gst/effectv/Makefile.am
+++ b/gst/effectv/Makefile.am
@@ -2,7 +2,7 @@ plugindir = $(libdir)/gst
plugin_LTLIBRARIES = libgsteffectv.la
-libgsteffectv_la_SOURCES = gsteffectv.c gstedge.c gstaging.c gstdice.c gstwarp.c gstshagadelic.c
+libgsteffectv_la_SOURCES = gsteffectv.c gstedge.c gstaging.c gstdice.c gstwarp.c gstshagadelic.c gstvertigo.c
libgsteffectv_la_CFLAGS = $(GST_CFLAGS)
libgsteffectv_la_LIBADD =
libgsteffectv_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
diff --git a/gst/effectv/gstdice.c b/gst/effectv/gstdice.c
index b6355319..7bff8242 100644
--- a/gst/effectv/gstdice.c
+++ b/gst/effectv/gstdice.c
@@ -59,7 +59,7 @@ struct _GstDiceTVClass
{
GstElementClass parent_class;
- void (*reset) (GstElement *elem);
+ void (*reset) (GstElement *element);
};
GstElementDetails gst_dicetv_details = {
@@ -196,9 +196,9 @@ gst_dicetv_init (GstDiceTV * filter)
}
static void
-gst_dicetv_reset_handler (GstElement *elem)
+gst_dicetv_reset_handler (GstElement *element)
{
- GstDiceTV *filter = GST_DICETV (elem);
+ GstDiceTV *filter = GST_DICETV (element);
gst_dicetv_create_map (filter);
}
diff --git a/gst/effectv/gsteffectv.c b/gst/effectv/gsteffectv.c
index e78276a2..2a66c75b 100644
--- a/gst/effectv/gsteffectv.c
+++ b/gst/effectv/gsteffectv.c
@@ -31,6 +31,7 @@ static struct _elements_entry _elements[] = {
{ "diceTV", gst_dicetv_get_type, &gst_dicetv_details, NULL },
{ "warpTV", gst_warptv_get_type, &gst_warptv_details, NULL },
{ "shagadelicTV", gst_shagadelictv_get_type, &gst_shagadelictv_details, NULL },
+ { "vertigoTV", gst_vertigotv_get_type, &gst_vertigotv_details, NULL },
{ NULL, 0 },
};
diff --git a/gst/effectv/gsteffectv.h b/gst/effectv/gsteffectv.h
index e1db303d..92510711 100644
--- a/gst/effectv/gsteffectv.h
+++ b/gst/effectv/gsteffectv.h
@@ -30,5 +30,8 @@ extern GstElementDetails gst_warptv_details;
GType gst_shagadelictv_get_type (void);
extern GstElementDetails gst_shagadelictv_details;
+GType gst_vertigotv_get_type (void);
+extern GstElementDetails gst_vertigotv_details;
+
extern GstPadTemplate *gst_effectv_sink_factory ();
extern GstPadTemplate *gst_effectv_src_factory ();
diff --git a/gst/effectv/gstvertigo.c b/gst/effectv/gstvertigo.c
new file mode 100644
index 00000000..4e9ec4ed
--- /dev/null
+++ b/gst/effectv/gstvertigo.c
@@ -0,0 +1,358 @@
+/* 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_VERTIGOTV \
+ (gst_vertigotv_get_type())
+#define GST_VERTIGOTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VERTIGOTV,GstVertigoTV))
+#define GST_VERTIGOTV_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ULAW,GstVertigoTV))
+#define GST_IS_VERTIGOTV(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VERTIGOTV))
+#define GST_IS_VERTIGOTV_CLASS(obj) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VERTIGOTV))
+
+typedef struct _GstVertigoTV GstVertigoTV;
+typedef struct _GstVertigoTVClass GstVertigoTVClass;
+
+struct _GstVertigoTV
+{
+ GstElement element;
+
+ GstPad *sinkpad, *srcpad;
+
+ gint width, height;
+ guint32 *buffer;
+ guint32 *current_buffer, *alt_buffer;
+ gint dx, dy;
+ gint sx, sy;
+ gdouble phase;
+ gdouble phase_increment;
+ gdouble zoomrate;
+
+};
+
+struct _GstVertigoTVClass
+{
+ GstElementClass parent_class;
+
+ void (*reset) (GstElement *element);
+};
+
+GstElementDetails gst_vertigotv_details = {
+ "VertigoTV",
+ "Filter/Effect",
+ "A loopback alpha blending effector with rotating and scaling",
+ VERSION,
+ "Wim Taymans <wim.taymans@chello.be>",
+ "(C) 2001 FUKUCHI Kentarou",
+};
+
+
+/* Filter signals and args */
+enum
+{
+ /* FILL ME */
+ RESET_SIGNAL,
+ LAST_SIGNAL
+};
+
+enum
+{
+ ARG_0,
+ ARG_SPEED,
+ ARG_ZOOM_SPEED,
+};
+
+static void gst_vertigotv_class_init (GstVertigoTVClass * klass);
+static void gst_vertigotv_init (GstVertigoTV * filter);
+
+static void gst_vertigotv_reset_handler (GstElement *element);
+
+static void gst_vertigotv_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_vertigotv_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void gst_vertigotv_chain (GstPad * pad, GstBuffer * buf);
+
+static GstElementClass *parent_class = NULL;
+static guint gst_vertigotv_signals[LAST_SIGNAL] = { 0 };
+
+GType gst_vertigotv_get_type (void)
+{
+ static GType vertigotv_type = 0;
+
+ if (!vertigotv_type) {
+ static const GTypeInfo vertigotv_info = {
+ sizeof (GstVertigoTVClass), NULL,
+ NULL,
+ (GClassInitFunc) gst_vertigotv_class_init,
+ NULL,
+ NULL,
+ sizeof (GstVertigoTV),
+ 0,
+ (GInstanceInitFunc) gst_vertigotv_init,
+ };
+
+ vertigotv_type = g_type_register_static (GST_TYPE_ELEMENT, "GstVertigoTV", &vertigotv_info, 0);
+ }
+ return vertigotv_type;
+}
+
+static void
+gst_vertigotv_class_init (GstVertigoTVClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstelement_class = (GstElementClass *) klass;
+
+ parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+ gst_vertigotv_signals[RESET_SIGNAL] =
+ g_signal_new ("reset_parms",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstVertigoTVClass, reset),
+ NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ klass->reset = gst_vertigotv_reset_handler;
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SPEED,
+ g_param_spec_float ("speed","Speed","Control the speed of movement",
+ 0.01, 100.0, 0.02, G_PARAM_READWRITE));
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ZOOM_SPEED,
+ g_param_spec_float ("zoom_speed","Zoom Speed","Control the rate of zooming",
+ 1.01, 1.1, 1.01, G_PARAM_READWRITE));
+
+ gobject_class->set_property = gst_vertigotv_set_property;
+ gobject_class->get_property = gst_vertigotv_get_property;
+}
+
+static void
+gst_vertigotv_reset_handler (GstElement *element)
+{
+ GstVertigoTV *filter = GST_VERTIGOTV (element);
+
+ filter->phase = 0.0;
+ filter->phase_increment = 0.02;
+ filter->zoomrate = 1.01;
+}
+
+
+static GstPadConnectReturn
+gst_vertigotv_sinkconnect (GstPad * pad, GstCaps * caps)
+{
+ GstVertigoTV *filter;
+ gint area;
+
+ filter = GST_VERTIGOTV (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 * 2 * sizeof(guint32));
+
+ bzero (filter->buffer, area * 2 * sizeof(guint32));
+ filter->current_buffer = filter->buffer;
+ filter->alt_buffer = filter->buffer + area;
+ filter->phase = 0;
+
+ if (gst_pad_try_set_caps (filter->srcpad, caps)) {
+ return GST_PAD_CONNECT_OK;
+ }
+
+ return GST_PAD_CONNECT_REFUSED;
+}
+
+static void
+gst_vertigotv_init (GstVertigoTV * filter)
+{
+ filter->sinkpad = gst_pad_new_from_template (gst_effectv_sink_factory (), "sink");
+ gst_pad_set_chain_function (filter->sinkpad, gst_vertigotv_chain);
+ gst_pad_set_connect_function (filter->sinkpad, gst_vertigotv_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->buffer = NULL;
+ filter->phase = 0.0;
+ filter->phase_increment = 0.02;
+ filter->zoomrate = 1.01;
+}
+
+static void
+gst_vertigotv_set_parms (GstVertigoTV *filter)
+{
+ double vx, vy;
+ double t;
+ double x, y;
+ double dizz;
+
+ dizz = sin (filter->phase) * 10 + sin (filter->phase*1.9+5) * 5;
+
+ x = filter->width / 2;
+ y = filter->height / 2;
+
+ t = (x*x + y*y) * filter->zoomrate;
+
+ if (filter->width > filter->height) {
+ if (dizz >= 0) {
+ if (dizz > x) dizz = x;
+ vx = (x * (x - dizz) + y * y) / t;
+ } else {
+ if (dizz < -x) dizz = -x;
+ vx = (x * (x + dizz) + y * y) / t;
+ }
+ vy = (dizz * y) / t;
+ } else {
+ if (dizz >= 0) {
+ if (dizz > y) dizz = y;
+ vx = (x * x + y * (y - dizz)) / t;
+ } else {
+ if (dizz < -y) dizz = -y;
+ vx = (x * x + y * (y + dizz)) / t;
+ }
+ vy = (dizz * x) / t;
+ }
+ filter->dx = vx * 65536;
+ filter->dy = vy * 65536;
+ filter->sx = (-vx * x + vy * y + x + cos (filter->phase * 5) * 2) * 65536;
+ filter->sy = (-vx * y - vy * x + y + sin (filter->phase * 6) * 2) * 65536;
+
+ filter->phase += filter->phase_increment;
+ if (filter->phase > 5700000) filter->phase = 0;
+}
+
+static void
+gst_vertigotv_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstVertigoTV *filter;
+ guint32 *src, *dest;
+ GstBuffer *outbuf;
+ guint32 *p;
+ guint32 v;
+ gint x, y;
+ gint ox, oy;
+ gint i;
+ gint width, height, area;
+
+ filter = GST_VERTIGOTV (gst_pad_get_parent (pad));
+
+ src = (guint32 *) GST_BUFFER_DATA (buf);
+
+ width = filter->width;
+ height = filter->height;
+ area = width * 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);
+
+ gst_vertigotv_set_parms (filter);
+ p = filter->alt_buffer;
+
+ for (y = height; y > 0; y--) {
+ ox = filter->sx;
+ oy = filter->sy;
+
+ for (x = width; x > 0; x--) {
+ i = (oy >> 16) * width + (ox >> 16);
+ if (i < 0) i = 0;
+ if (i >= area) i = area;
+
+ v = filter->current_buffer[i] & 0xfcfcff;
+ v = (v * 3) + ((*src++) & 0xfcfcff);
+
+ *p++ = (v >> 2);
+ ox += filter->dx;
+ oy += filter->dy;
+ }
+ filter->sx -= filter->dy;
+ filter->sy += filter->dx;
+ }
+
+ memcpy(dest, filter->alt_buffer, area * sizeof(guint32));
+
+ gst_buffer_unref (buf);
+
+ gst_pad_push (filter->srcpad, outbuf);
+
+ p = filter->current_buffer;
+ filter->current_buffer = filter->alt_buffer;
+ filter->alt_buffer = p;
+}
+
+static void
+gst_vertigotv_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstVertigoTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_VERTIGOTV (object));
+
+ filter = GST_VERTIGOTV (object);
+
+ switch (prop_id) {
+ case ARG_SPEED:
+ filter->phase_increment = g_value_get_float (value);
+ break;
+ case ARG_ZOOM_SPEED:
+ filter->zoomrate = g_value_get_float (value);
+ break;
+ default:
+ break;
+ }
+}
+
+static void
+gst_vertigotv_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstVertigoTV *filter;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail (GST_IS_VERTIGOTV (object));
+
+ filter = GST_VERTIGOTV (object);
+
+ switch (prop_id) {
+ case ARG_SPEED:
+ g_value_set_float (value, filter->phase_increment);
+ break;
+ case ARG_ZOOM_SPEED:
+ g_value_set_float (value, filter->zoomrate);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}