Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 1 | /* |
| 2 | * GStreamer |
| 3 | * Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk> |
Thiago Santos | 44d33ee | 2010-06-04 15:53:20 -0300 | [diff] [blame] | 4 | * |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 18 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 21 | * DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | * Alternatively, the contents of this file may be used under the |
| 24 | * GNU Lesser General Public License Version 2.1 (the "LGPL"), in |
| 25 | * which case the following provisions apply instead of the ones |
| 26 | * mentioned above: |
| 27 | * |
| 28 | * This library is free software; you can redistribute it and/or |
| 29 | * modify it under the terms of the GNU Library General Public |
| 30 | * License as published by the Free Software Foundation; either |
| 31 | * version 2 of the License, or (at your option) any later version. |
| 32 | * |
| 33 | * This library is distributed in the hope that it will be useful, |
| 34 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 35 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 36 | * Library General Public License for more details. |
| 37 | * |
| 38 | * You should have received a copy of the GNU Library General Public |
| 39 | * License along with this library; if not, write to the |
Tim-Philipp Müller | 9e1b75f | 2012-11-03 20:38:00 +0000 | [diff] [blame] | 40 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| 41 | * Boston, MA 02110-1301, USA. |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 42 | */ |
| 43 | |
| 44 | /* |
| 45 | * Thanks to Jerry Huxtable <http://www.jhlabs.com> work on its java |
| 46 | * image editor and filters. The algorithms here were extracted from |
| 47 | * his code. |
| 48 | */ |
| 49 | |
| 50 | |
| 51 | #ifdef HAVE_CONFIG_H |
| 52 | # include <config.h> |
| 53 | #endif |
| 54 | |
| 55 | #include <gst/gst.h> |
| 56 | #include <math.h> |
| 57 | |
| 58 | #include "gstcirclegeometrictransform.h" |
| 59 | |
| 60 | GST_DEBUG_CATEGORY_STATIC (gst_circle_geometric_transform_debug); |
| 61 | #define GST_CAT_DEFAULT gst_circle_geometric_transform_debug |
| 62 | |
| 63 | GstGeometricTransformClass *parent_class; |
| 64 | |
| 65 | enum |
| 66 | { |
| 67 | PROP_0, |
| 68 | PROP_X_CENTER, |
| 69 | PROP_Y_CENTER, |
| 70 | PROP_RADIUS |
| 71 | }; |
| 72 | |
| 73 | #define DEFAULT_X_CENTER 0.5 |
| 74 | #define DEFAULT_Y_CENTER 0.5 |
Filippo Argiolas | c921067 | 2010-08-03 10:08:34 +0200 | [diff] [blame] | 75 | #define DEFAULT_RADIUS 0.35 |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 76 | |
| 77 | static void |
| 78 | gst_circle_geometric_transform_set_property (GObject * object, guint prop_id, |
| 79 | const GValue * value, GParamSpec * pspec) |
| 80 | { |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 81 | GstCircleGeometricTransform *cgt; |
| 82 | GstGeometricTransform *gt; |
| 83 | gdouble v; |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 84 | |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 85 | gt = GST_GEOMETRIC_TRANSFORM_CAST (object); |
| 86 | cgt = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (object); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 87 | |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 88 | GST_OBJECT_LOCK (cgt); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 89 | switch (prop_id) { |
| 90 | case PROP_X_CENTER: |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 91 | v = g_value_get_double (value); |
| 92 | if (v != cgt->x_center) { |
| 93 | cgt->x_center = v; |
| 94 | gst_geometric_transform_set_need_remap (gt); |
| 95 | } |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 96 | break; |
| 97 | case PROP_Y_CENTER: |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 98 | v = g_value_get_double (value); |
| 99 | if (v != cgt->y_center) { |
| 100 | cgt->y_center = v; |
| 101 | gst_geometric_transform_set_need_remap (gt); |
| 102 | } |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 103 | break; |
| 104 | case PROP_RADIUS: |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 105 | v = g_value_get_double (value); |
| 106 | if (v != cgt->radius) { |
| 107 | cgt->radius = v; |
| 108 | gst_geometric_transform_set_need_remap (gt); |
| 109 | } |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 110 | break; |
| 111 | default: |
| 112 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| 113 | break; |
| 114 | } |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 115 | GST_OBJECT_UNLOCK (cgt); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 116 | } |
| 117 | |
| 118 | static void |
| 119 | gst_circle_geometric_transform_get_property (GObject * object, guint prop_id, |
| 120 | GValue * value, GParamSpec * pspec) |
| 121 | { |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 122 | GstCircleGeometricTransform *cgt; |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 123 | |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 124 | cgt = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (object); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 125 | |
| 126 | switch (prop_id) { |
| 127 | case PROP_X_CENTER: |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 128 | g_value_set_double (value, cgt->x_center); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 129 | break; |
| 130 | case PROP_Y_CENTER: |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 131 | g_value_set_double (value, cgt->y_center); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 132 | break; |
| 133 | case PROP_RADIUS: |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 134 | g_value_set_double (value, cgt->radius); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 135 | break; |
| 136 | default: |
| 137 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| 138 | break; |
| 139 | } |
| 140 | } |
| 141 | |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 142 | /* GObject vmethod implementations */ |
| 143 | |
| 144 | static gboolean |
| 145 | circle_geometric_transform_precalc (GstGeometricTransform * gt) |
| 146 | { |
| 147 | GstCircleGeometricTransform *cgt = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (gt); |
| 148 | |
| 149 | cgt->precalc_x_center = cgt->x_center * gt->width; |
| 150 | cgt->precalc_y_center = cgt->y_center * gt->height; |
Filippo Argiolas | c921067 | 2010-08-03 10:08:34 +0200 | [diff] [blame] | 151 | cgt->precalc_radius = |
| 152 | cgt->radius * 0.5 * sqrt (gt->width * gt->width + |
| 153 | gt->height * gt->height); |
| 154 | cgt->precalc_radius2 = cgt->precalc_radius * cgt->precalc_radius; |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 155 | |
| 156 | return TRUE; |
| 157 | } |
| 158 | |
| 159 | static void |
| 160 | gst_circle_geometric_transform_class_init (GstCircleGeometricTransformClass * |
| 161 | klass) |
| 162 | { |
| 163 | GObjectClass *gobject_class; |
| 164 | GstGeometricTransformClass *gstgt_class; |
| 165 | |
| 166 | gobject_class = (GObjectClass *) klass; |
| 167 | gstgt_class = (GstGeometricTransformClass *) klass; |
| 168 | |
| 169 | parent_class = g_type_class_peek_parent (klass); |
| 170 | |
Sebastian Dröge | 426c26f | 2013-12-02 10:25:57 +0100 | [diff] [blame] | 171 | gobject_class->set_property = gst_circle_geometric_transform_set_property; |
| 172 | gobject_class->get_property = gst_circle_geometric_transform_get_property; |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 173 | |
| 174 | /* FIXME I don't like the idea of x-center and y-center being in % and |
| 175 | * radius and intensity in absolute values, I think no one likes it, but |
| 176 | * I can't see a way to have nice default values without % */ |
| 177 | g_object_class_install_property (gobject_class, PROP_X_CENTER, |
| 178 | g_param_spec_double ("x-center", "x center", |
| 179 | "X axis center of the circle_geometric_transform effect", |
| 180 | 0.0, 1.0, DEFAULT_X_CENTER, |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 181 | GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 182 | g_object_class_install_property (gobject_class, PROP_Y_CENTER, |
| 183 | g_param_spec_double ("y-center", "y center", |
| 184 | "Y axis center of the circle_geometric_transform effect", |
| 185 | 0.0, 1.0, DEFAULT_Y_CENTER, |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 186 | GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 187 | g_object_class_install_property (gobject_class, PROP_RADIUS, |
| 188 | g_param_spec_double ("radius", "radius", |
Filippo Argiolas | c921067 | 2010-08-03 10:08:34 +0200 | [diff] [blame] | 189 | "radius of the circle_geometric_transform effect", 0.0, 1.0, |
Thiago Santos | 1c33b79 | 2010-06-07 22:21:10 -0300 | [diff] [blame] | 190 | DEFAULT_RADIUS, |
| 191 | GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
Thiago Santos | 2f9a630 | 2010-06-02 00:34:36 -0300 | [diff] [blame] | 192 | |
| 193 | gstgt_class->prepare_func = circle_geometric_transform_precalc; |
| 194 | } |
| 195 | |
| 196 | static void |
| 197 | gst_circle_geometric_transform_init (GstCircleGeometricTransform * filter, |
| 198 | GstCircleGeometricTransformClass * gclass) |
| 199 | { |
| 200 | filter->x_center = DEFAULT_X_CENTER; |
| 201 | filter->y_center = DEFAULT_Y_CENTER; |
| 202 | filter->radius = DEFAULT_RADIUS; |
| 203 | } |
| 204 | |
| 205 | GType |
| 206 | gst_circle_geometric_transform_get_type (void) |
| 207 | { |
| 208 | static GType circle_geometric_transform_type = 0; |
| 209 | |
| 210 | if (!circle_geometric_transform_type) { |
| 211 | static const GTypeInfo circle_geometric_transform_info = { |
| 212 | sizeof (GstCircleGeometricTransformClass), |
| 213 | NULL, |
| 214 | NULL, |
| 215 | (GClassInitFunc) gst_circle_geometric_transform_class_init, |
| 216 | NULL, |
| 217 | NULL, |
| 218 | sizeof (GstCircleGeometricTransform), |
| 219 | 0, |
| 220 | (GInstanceInitFunc) gst_circle_geometric_transform_init, |
| 221 | }; |
| 222 | |
| 223 | circle_geometric_transform_type = |
| 224 | g_type_register_static (GST_TYPE_GEOMETRIC_TRANSFORM, |
| 225 | "GstCircleGeometricTransform", &circle_geometric_transform_info, |
| 226 | G_TYPE_FLAG_ABSTRACT); |
| 227 | |
| 228 | GST_DEBUG_CATEGORY_INIT (gst_circle_geometric_transform_debug, |
| 229 | "circlegeometrictransform", 0, |
| 230 | "Base class for geometric transform elements that operate " |
| 231 | "on a circular area"); |
| 232 | } |
| 233 | return circle_geometric_transform_type; |
| 234 | } |