Commit 0f4d96ce authored by Wim Taymans's avatar Wim Taymans

Vertigo is another cool one

Original commit message from CVS:
Vertigo is another cool one
parent ad06345b
......@@ -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)
......
......@@ -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);
}
......
......@@ -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 },
};
......
......@@ -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 ();
/* 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;
}
}
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