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geometrictransform: Adds a intermediary baseclass circlegeometrictransform

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Adds an intermediary baseclass named gstcirclegeometrictransform
to keep common properties code for filters that operate on
a circular area.
This commit is contained in:
Thiago Santos 2010-06-02 00:34:36 -03:00
parent dcda4b606c
commit 2f9a630a62
5 changed files with 337 additions and 80 deletions
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5
gst/geometrictransform/Makefile.am
View file

@ -2,6 +2,7 @@ plugin_LTLIBRARIES = libgstgeometrictransform.la
libgstgeometrictransform_la_SOURCES = plugin.c \
gstgeometrictransform.c \
gstcirclegeometrictransform.c \
gstpinch.c
libgstgeometrictransform_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) \
@ -10,4 +11,6 @@ libgstgeometrictransform_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) -lgstvideo-@GST_MA
libgstgeometrictransform_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstgeometrictransform_la_LIBTOOLFLAGS = --tag=disable-static
noinst_HEADERS = gstgeometrictransform.h gstpinch.h
noinst_HEADERS = gstgeometrictransform.h \
gstcirclegeometrictransform.h \
gstpinch.h

225
gst/geometrictransform/gstcirclegeometrictransform.c Normal file
View file

@ -0,0 +1,225 @@
/*
* GStreamer
* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Thanks to Jerry Huxtable <http://www.jhlabs.com> work on its java
* image editor and filters. The algorithms here were extracted from
* his code.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/gst.h>
#include <math.h>
#include "gstcirclegeometrictransform.h"
GST_DEBUG_CATEGORY_STATIC (gst_circle_geometric_transform_debug);
#define GST_CAT_DEFAULT gst_circle_geometric_transform_debug
GstGeometricTransformClass *parent_class;
enum
{
PROP_0,
PROP_X_CENTER,
PROP_Y_CENTER,
PROP_RADIUS
};
#define DEFAULT_X_CENTER 0.5
#define DEFAULT_Y_CENTER 0.5
#define DEFAULT_RADIUS 100
static void
gst_circle_geometric_transform_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCircleGeometricTransform *circle_geometric_transform;
circle_geometric_transform = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (object);
switch (prop_id) {
case PROP_X_CENTER:
circle_geometric_transform->x_center = g_value_get_double (value);
break;
case PROP_Y_CENTER:
circle_geometric_transform->y_center = g_value_get_double (value);
break;
case PROP_RADIUS:
circle_geometric_transform->radius = g_value_get_double (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_circle_geometric_transform_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstCircleGeometricTransform *circle_geometric_transform;
circle_geometric_transform = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (object);
switch (prop_id) {
case PROP_X_CENTER:
g_value_set_double (value, circle_geometric_transform->x_center);
break;
case PROP_Y_CENTER:
g_value_set_double (value, circle_geometric_transform->y_center);
break;
case PROP_RADIUS:
g_value_set_double (value, circle_geometric_transform->radius);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* Clean up */
static void
gst_circle_geometric_transform_finalize (GObject * obj)
{
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
/* GObject vmethod implementations */
static gboolean
circle_geometric_transform_precalc (GstGeometricTransform * gt)
{
GstCircleGeometricTransform *cgt = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (gt);
cgt->precalc_x_center = cgt->x_center * gt->width;
cgt->precalc_y_center = cgt->y_center * gt->height;
cgt->precalc_radius2 = cgt->radius * cgt->radius;
return TRUE;
}
static void
gst_circle_geometric_transform_class_init (GstCircleGeometricTransformClass *
klass)
{
GObjectClass *gobject_class;
GstGeometricTransformClass *gstgt_class;
gobject_class = (GObjectClass *) klass;
gstgt_class = (GstGeometricTransformClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->finalize =
GST_DEBUG_FUNCPTR (gst_circle_geometric_transform_finalize);
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_circle_geometric_transform_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_circle_geometric_transform_get_property);
/* FIXME I don't like the idea of x-center and y-center being in % and
* radius and intensity in absolute values, I think no one likes it, but
* I can't see a way to have nice default values without % */
g_object_class_install_property (gobject_class, PROP_X_CENTER,
g_param_spec_double ("x-center", "x center",
"X axis center of the circle_geometric_transform effect",
0.0, 1.0, DEFAULT_X_CENTER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_Y_CENTER,
g_param_spec_double ("y-center", "y center",
"Y axis center of the circle_geometric_transform effect",
0.0, 1.0, DEFAULT_Y_CENTER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RADIUS,
g_param_spec_double ("radius", "radius",
"radius of the circle_geometric_transform effect", 0.0, G_MAXDOUBLE,
DEFAULT_RADIUS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstgt_class->prepare_func = circle_geometric_transform_precalc;
}
static void
gst_circle_geometric_transform_init (GstCircleGeometricTransform * filter,
GstCircleGeometricTransformClass * gclass)
{
filter->x_center = DEFAULT_X_CENTER;
filter->y_center = DEFAULT_Y_CENTER;
filter->radius = DEFAULT_RADIUS;
}
GType
gst_circle_geometric_transform_get_type (void)
{
static GType circle_geometric_transform_type = 0;
if (!circle_geometric_transform_type) {
static const GTypeInfo circle_geometric_transform_info = {
sizeof (GstCircleGeometricTransformClass),
NULL,
NULL,
(GClassInitFunc) gst_circle_geometric_transform_class_init,
NULL,
NULL,
sizeof (GstCircleGeometricTransform),
0,
(GInstanceInitFunc) gst_circle_geometric_transform_init,
};
circle_geometric_transform_type =
g_type_register_static (GST_TYPE_GEOMETRIC_TRANSFORM,
"GstCircleGeometricTransform", &circle_geometric_transform_info,
G_TYPE_FLAG_ABSTRACT);
GST_DEBUG_CATEGORY_INIT (gst_circle_geometric_transform_debug,
"circlegeometrictransform", 0,
"Base class for geometric transform elements that operate "
"on a circular area");
}
return circle_geometric_transform_type;
}

93
gst/geometrictransform/gstcirclegeometrictransform.h Normal file
View file

@ -0,0 +1,93 @@
/*
* GStreamer
* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_CIRCLE_GEOMETRIC_TRANSFORM_H__
#define __GST_CIRCLE_GEOMETRIC_TRANSFORM_H__
#include <gst/gst.h>
#include "gstgeometrictransform.h"
G_BEGIN_DECLS
/* #defines don't like whitespacey bits */
#define GST_TYPE_CIRCLE_GEOMETRIC_TRANSFORM \
(gst_circle_geometric_transform_get_type())
#define GST_CIRCLE_GEOMETRIC_TRANSFORM(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CIRCLE_GEOMETRIC_TRANSFORM,GstCircleGeometricTransform))
#define GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST(obj) \
((GstCircleGeometricTransform *)(obj))
#define GST_CIRCLE_GEOMETRIC_TRANSFORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CIRCLE_GEOMETRIC_TRANSFORM,GstCircleGeometricTransformClass))
#define GST_IS_CIRCLE_GEOMETRIC_TRANSFORM(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CIRCLE_GEOMETRIC_TRANSFORM))
#define GST_IS_CIRCLE_GEOMETRIC_TRANSFORM_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CIRCLE_GEOMETRIC_TRANSFORM))
typedef struct _GstCircleGeometricTransform GstCircleGeometricTransform;
typedef struct _GstCircleGeometricTransformClass GstCircleGeometricTransformClass;
struct _GstCircleGeometricTransform
{
GstGeometricTransform element;
gdouble x_center;
gdouble y_center;
gdouble radius;
gdouble precalc_x_center;
gdouble precalc_y_center;
gdouble precalc_radius2;
};
struct _GstCircleGeometricTransformClass
{
GstGeometricTransformClass parent_class;
};
GType gst_circle_geometric_transform_get_type (void);
gboolean gst_circle_geometric_transform_plugin_init (GstPlugin * plugin);
G_END_DECLS
#endif /* __GST_CIRCLE_GEOMETRIC_TRANSFORM_H__ */

82
gst/geometrictransform/gstpinch.c
View file

@ -63,19 +63,13 @@ GST_DEBUG_CATEGORY_STATIC (gst_pinch_debug);
enum
{
PROP_0,
PROP_X_CENTER,
PROP_Y_CENTER,
PROP_RADIUS,
PROP_INTENSITY
};
#define DEFAULT_X_CENTER 0.5
#define DEFAULT_Y_CENTER 0.5
#define DEFAULT_RADIUS 100
#define DEFAULT_INTENSITY 0.5
GST_BOILERPLATE (GstPinch, gst_pinch, GstGeometricTransform,
GST_TYPE_GEOMETRIC_TRANSFORM);
GST_BOILERPLATE (GstPinch, gst_pinch, GstCircleGeometricTransform,
GST_TYPE_CIRCLE_GEOMETRIC_TRANSFORM);
static void
gst_pinch_set_property (GObject * object, guint prop_id, const GValue * value,
@ -86,15 +80,6 @@ gst_pinch_set_property (GObject * object, guint prop_id, const GValue * value,
pinch = GST_PINCH_CAST (object);
switch (prop_id) {
case PROP_X_CENTER:
pinch->x_center = g_value_get_double (value);
break;
case PROP_Y_CENTER:
pinch->y_center = g_value_get_double (value);
break;
case PROP_RADIUS:
pinch->radius = g_value_get_double (value);
break;
case PROP_INTENSITY:
pinch->intensity = g_value_get_double (value);
break;
@ -113,15 +98,6 @@ gst_pinch_get_property (GObject * object, guint prop_id,
pinch = GST_PINCH_CAST (object);
switch (prop_id) {
case PROP_X_CENTER:
g_value_set_double (value, pinch->x_center);
break;
case PROP_Y_CENTER:
g_value_set_double (value, pinch->y_center);
break;
case PROP_RADIUS:
g_value_set_double (value, pinch->radius);
break;
case PROP_INTENSITY:
g_value_set_double (value, pinch->intensity);
break;
@ -152,43 +128,30 @@ gst_pinch_base_init (gpointer gclass)
"Thiago Santos<thiago.sousa.santos@collabora.co.uk>");
}
static gboolean
pinch_precalc (GstGeometricTransform * gt)
{
GstPinch *pinch = GST_PINCH_CAST (gt);
pinch->precalc_x_center = pinch->x_center * gt->width;
pinch->precalc_y_center = pinch->y_center * gt->height;
return TRUE;
}
static gboolean
pinch_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
gdouble * in_y)
{
GstCircleGeometricTransform *cgt = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (gt);
GstPinch *pinch = GST_PINCH_CAST (gt);
gdouble r2;
gdouble distance;
gdouble dx, dy;
dx = x - pinch->precalc_x_center;
dy = y - pinch->precalc_y_center;
dx = x - cgt->precalc_x_center;
dy = y - cgt->precalc_y_center;
distance = dx * dx + dy * dy;
r2 = pinch->radius * pinch->radius;
GST_LOG_OBJECT (pinch, "Center %0.5lf (%0.2lf) %0.5lf (%0.2lf)",
pinch->precalc_x_center, pinch->x_center, pinch->precalc_y_center,
pinch->y_center);
cgt->precalc_x_center, cgt->x_center, cgt->precalc_y_center,
cgt->y_center);
GST_LOG_OBJECT (pinch, "Input %d %d, distance=%lf, radius2=%lf, dx=%lf"
", dy=%lf", x, y, distance, r2, dx, dy);
", dy=%lf", x, y, distance, cgt->precalc_radius2, dx, dy);
if (distance > r2 || distance == 0) {
if (distance > cgt->precalc_radius2 || distance == 0) {
*in_x = x;
*in_y = y;
} else {
gdouble d = sqrt (distance / r2);
gdouble d = sqrt (distance / cgt->precalc_radius2);
gdouble t = pow (sin (G_PI * 0.5 * d), -pinch->intensity);
dx *= t;
@ -196,8 +159,8 @@ pinch_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x,
GST_LOG_OBJECT (pinch, "D=%lf, t=%lf, dx=%lf" ", dy=%lf", d, t, dx, dy);
*in_x = pinch->precalc_x_center + dx;
*in_y = pinch->precalc_y_center + dy;
*in_x = cgt->precalc_x_center + dx;
*in_y = cgt->precalc_y_center + dy;
*in_x = CLAMP (*in_x, 0, gt->width - 1);
*in_y = CLAMP (*in_y, 0, gt->height - 1);
@ -225,23 +188,6 @@ gst_pinch_class_init (GstPinchClass * klass)
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_pinch_get_property);
/* FIXME I don't like the idea of x-center and y-center being in % and
* radius and intensity in absolute values, I think no one likes it, but
* I can't see a way to have nice default values without % */
g_object_class_install_property (gobject_class, PROP_X_CENTER,
g_param_spec_double ("x-center", "x center",
"X axis center of the pinch effect",
0.0, 1.0, DEFAULT_X_CENTER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_Y_CENTER,
g_param_spec_double ("y-center", "y center",
"Y axis center of the pinch effect",
0.0, 1.0, DEFAULT_Y_CENTER,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_RADIUS,
g_param_spec_double ("radius", "radius", "radius of the pinch effect",
0.0, G_MAXDOUBLE, DEFAULT_RADIUS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INTENSITY,
g_param_spec_double ("intensity", "intensity",
"intensity of the pinch effect",
@ -249,16 +195,12 @@ gst_pinch_class_init (GstPinchClass * klass)
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gstgt_class->map_func = pinch_map;
gstgt_class->prepare_func = pinch_precalc;
}
static void
gst_pinch_init (GstPinch * filter, GstPinchClass * gclass)
{
filter->x_center = DEFAULT_X_CENTER;
filter->y_center = DEFAULT_Y_CENTER;
filter->intensity = DEFAULT_INTENSITY;
filter->radius = DEFAULT_RADIUS;
}
gboolean

12
gst/geometrictransform/gstpinch.h
View file

@ -45,7 +45,7 @@
#define __GST_PINCH_H__
#include <gst/gst.h>
#include "gstgeometrictransform.h"
#include "gstcirclegeometrictransform.h"
G_BEGIN_DECLS
@ -68,20 +68,14 @@ typedef struct _GstPinchClass GstPinchClass;
struct _GstPinch
{
GstGeometricTransform element;
GstCircleGeometricTransform element;
gdouble x_center;
gdouble y_center;
gdouble radius;
gdouble intensity;
gdouble precalc_x_center;
gdouble precalc_y_center;
};
struct _GstPinchClass
{
GstGeometricTransformClass parent_class;
GstCircleGeometricTransformClass parent_class;
};
GType gst_pinch_get_type (void);