diff options
author | Thiago Santos <thiago.sousa.santos@collabora.co.uk> | 2010-06-02 01:21:23 -0300 |
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committer | Thiago Santos <thiago.sousa.santos@collabora.co.uk> | 2010-06-04 15:31:21 -0300 |
commit | 8eab2c8a301e775de9e8979eec5f53fb824ae190 (patch) | |
tree | 5a725481a7d23f945c8a32fdf150bacd64ad3145 /gst/geometrictransform | |
parent | 53d40802d2d7463f39dc53432c4920c78a2fd2d7 (diff) | |
download | gstreamer-plugins-bad-8eab2c8a301e775de9e8979eec5f53fb824ae190.tar.gz |
kaleidoscope: Adds new element 'kaleidoscope'
Adds new kaleidoscope element to geometrictransform plugin
Diffstat (limited to 'gst/geometrictransform')
-rw-r--r-- | gst/geometrictransform/Makefile.am | 4 | ||||
-rw-r--r-- | gst/geometrictransform/geometricmath.c | 75 | ||||
-rw-r--r-- | gst/geometrictransform/geometricmath.h | 61 | ||||
-rw-r--r-- | gst/geometrictransform/gstkaleidoscope.c | 235 | ||||
-rw-r--r-- | gst/geometrictransform/gstkaleidoscope.h | 89 | ||||
-rw-r--r-- | gst/geometrictransform/plugin.c | 4 |
6 files changed, 468 insertions, 0 deletions
diff --git a/gst/geometrictransform/Makefile.am b/gst/geometrictransform/Makefile.am index 53be430f0..58174107d 100644 --- a/gst/geometrictransform/Makefile.am +++ b/gst/geometrictransform/Makefile.am @@ -3,6 +3,8 @@ plugin_LTLIBRARIES = libgstgeometrictransform.la libgstgeometrictransform_la_SOURCES = plugin.c \ gstgeometrictransform.c \ gstcirclegeometrictransform.c \ + geometricmath.c \ + gstkaleidoscope.c \ gstpinch.c \ gsttwirl.c @@ -14,5 +16,7 @@ libgstgeometrictransform_la_LIBTOOLFLAGS = --tag=disable-static noinst_HEADERS = gstgeometrictransform.h \ gstcirclegeometrictransform.h \ + geometricmath.h \ + gstkaleidoscope.h \ gstpinch.h \ gsttwirl.h diff --git a/gst/geometrictransform/geometricmath.c b/gst/geometrictransform/geometricmath.c new file mode 100644 index 000000000..4f49b5c15 --- /dev/null +++ b/gst/geometrictransform/geometricmath.c @@ -0,0 +1,75 @@ +/* + * 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. + */ + +#include "geometricmath.h" + +/* + * This differs from the % operator with respect to negative numbers + */ +static gdouble +mod_float (gdouble a, gdouble b) +{ + gint n = (gint) (a / b); + + a -= n * b; + if (a < 0) + return a + b; + return a; +} + +/** + * Returns a repeating triangle shape in the range 0..1 with wavelength 1.0 + */ +gdouble +geometric_math_triangle (gdouble x) +{ + gdouble r = mod_float (x, 1.0); + + return 2.0 * (r < 0.5 ? r : 1 - r); +} diff --git a/gst/geometrictransform/geometricmath.h b/gst/geometrictransform/geometricmath.h new file mode 100644 index 000000000..fbca501d7 --- /dev/null +++ b/gst/geometrictransform/geometricmath.h @@ -0,0 +1,61 @@ +/* + * 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. + */ + +#ifndef __GEOMETRIC_MATH_H__ +#define __GEOMETRIC_MATH_H__ + +#include <gst/gst.h> + +G_BEGIN_DECLS + +gdouble geometric_math_triangle (gdouble x); + +G_END_DECLS + +#endif /* __GEOMETRIC_MATH_H__ */ diff --git a/gst/geometrictransform/gstkaleidoscope.c b/gst/geometrictransform/gstkaleidoscope.c new file mode 100644 index 000000000..f4f1beeac --- /dev/null +++ b/gst/geometrictransform/gstkaleidoscope.c @@ -0,0 +1,235 @@ +/* + * 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 "geometricmath.h" +#include "gstkaleidoscope.h" + +GST_DEBUG_CATEGORY_STATIC (gst_kaleidoscope_debug); +#define GST_CAT_DEFAULT gst_kaleidoscope_debug + +enum +{ + PROP_0, + PROP_ANGLE, + PROP_ANGLE2, + PROP_SIDES +}; + +#define DEFAULT_ANGLE 0 +#define DEFAULT_ANGLE2 0 +#define DEFAULT_SIDES 3 + +GST_BOILERPLATE (GstKaleidoscope, gst_kaleidoscope, GstCircleGeometricTransform, + GST_TYPE_CIRCLE_GEOMETRIC_TRANSFORM); + +static void +gst_kaleidoscope_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstKaleidoscope *kaleidoscope; + + kaleidoscope = GST_KALEIDOSCOPE_CAST (object); + + switch (prop_id) { + case PROP_ANGLE: + kaleidoscope->angle = g_value_get_double (value); + break; + case PROP_ANGLE2: + kaleidoscope->angle2 = g_value_get_double (value); + break; + case PROP_SIDES: + kaleidoscope->sides = g_value_get_int (value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_kaleidoscope_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstKaleidoscope *kaleidoscope; + + kaleidoscope = GST_KALEIDOSCOPE_CAST (object); + + switch (prop_id) { + case PROP_ANGLE: + g_value_set_double (value, kaleidoscope->angle); + break; + case PROP_ANGLE2: + g_value_set_double (value, kaleidoscope->angle2); + break; + case PROP_SIDES: + g_value_set_int (value, kaleidoscope->sides); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +/* Clean up */ +static void +gst_kaleidoscope_finalize (GObject * obj) +{ + G_OBJECT_CLASS (parent_class)->finalize (obj); +} + +/* GObject vmethod implementations */ + +static void +gst_kaleidoscope_base_init (gpointer gclass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); + + gst_element_class_set_details_simple (element_class, + "kaleidoscope", + "Transform/Effect/Video", + "Applies 'kaleidoscope' geometric transform to the image", + "Thiago Santos<thiago.sousa.santos@collabora.co.uk>"); +} + +static gboolean +kaleidoscope_map (GstGeometricTransform * gt, gint x, gint y, gdouble * in_x, + gdouble * in_y) +{ + GstCircleGeometricTransform *cgt = GST_CIRCLE_GEOMETRIC_TRANSFORM_CAST (gt); + GstKaleidoscope *kaleidoscope = GST_KALEIDOSCOPE_CAST (gt); + gdouble dx, dy; + gdouble distance; + gdouble theta; + + dx = x - cgt->precalc_x_center; + dy = y - cgt->precalc_y_center; + distance = sqrt (dx * dx + dy * dy); + theta = atan2 (dy, dx) - kaleidoscope->angle - kaleidoscope->angle2; + + theta = geometric_math_triangle (theta / G_PI * kaleidoscope->sides * 0.5); + + if (cgt->radius != 0) { + gdouble radiusc = cgt->radius / cos (theta); + + distance = radiusc * geometric_math_triangle (distance / radiusc); + } + theta += kaleidoscope->angle; + + *in_x = cgt->precalc_x_center + distance * cos (theta); + *in_y = cgt->precalc_y_center + distance * sin (theta); + + *in_x = CLAMP (*in_x, 0, gt->width - 1); + *in_y = CLAMP (*in_y, 0, gt->height - 1); + GST_DEBUG_OBJECT (kaleidoscope, "Inversely mapped %d %d into %lf %lf", + x, y, *in_x, *in_y); + + return TRUE; +} + +static void +gst_kaleidoscope_class_init (GstKaleidoscopeClass * 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_kaleidoscope_finalize); + gobject_class->set_property = + GST_DEBUG_FUNCPTR (gst_kaleidoscope_set_property); + gobject_class->get_property = + GST_DEBUG_FUNCPTR (gst_kaleidoscope_get_property); + + + g_object_class_install_property (gobject_class, PROP_ANGLE, + g_param_spec_double ("angle", "angle", + "primary angle in radians of the kaleidoscope effect", + -G_MAXDOUBLE, G_MAXDOUBLE, DEFAULT_ANGLE, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + g_object_class_install_property (gobject_class, PROP_ANGLE2, + g_param_spec_double ("angle2", "angle2", + "secondary angle in radians of the kaleidoscope effect", + -G_MAXDOUBLE, G_MAXDOUBLE, DEFAULT_ANGLE, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + g_object_class_install_property (gobject_class, PROP_SIDES, + g_param_spec_int ("sides", "sides", "number of sides", + 0, G_MAXINT, DEFAULT_SIDES, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + + gstgt_class->map_func = kaleidoscope_map; +} + +static void +gst_kaleidoscope_init (GstKaleidoscope * filter, GstKaleidoscopeClass * gclass) +{ + filter->angle = DEFAULT_ANGLE; + filter->angle2 = DEFAULT_ANGLE2; + filter->sides = DEFAULT_SIDES; +} + +gboolean +gst_kaleidoscope_plugin_init (GstPlugin * plugin) +{ + GST_DEBUG_CATEGORY_INIT (gst_kaleidoscope_debug, "kaleidoscope", 0, + "kaleidoscope"); + + return gst_element_register (plugin, "kaleidoscope", GST_RANK_NONE, + GST_TYPE_KALEIDOSCOPE); +} diff --git a/gst/geometrictransform/gstkaleidoscope.h b/gst/geometrictransform/gstkaleidoscope.h new file mode 100644 index 000000000..aac6c3950 --- /dev/null +++ b/gst/geometrictransform/gstkaleidoscope.h @@ -0,0 +1,89 @@ +/* + * 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_KALEIDOSCOPE_H__ +#define __GST_KALEIDOSCOPE_H__ + +#include <gst/gst.h> +#include "gstcirclegeometrictransform.h" + +G_BEGIN_DECLS + +/* #defines don't like whitespacey bits */ +#define GST_TYPE_KALEIDOSCOPE \ + (gst_kaleidoscope_get_type()) +#define GST_KALEIDOSCOPE(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_KALEIDOSCOPE,GstKaleidoscope)) +#define GST_KALEIDOSCOPE_CAST(obj) \ + ((GstKaleidoscope *)(obj)) +#define GST_KALEIDOSCOPE_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_KALEIDOSCOPE,GstKaleidoscopeClass)) +#define GST_IS_KALEIDOSCOPE(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_KALEIDOSCOPE)) +#define GST_IS_KALEIDOSCOPE_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_KALEIDOSCOPE)) + +typedef struct _GstKaleidoscope GstKaleidoscope; +typedef struct _GstKaleidoscopeClass GstKaleidoscopeClass; + +struct _GstKaleidoscope +{ + GstCircleGeometricTransform element; + + gdouble angle; + gdouble angle2; + gint sides; +}; + +struct _GstKaleidoscopeClass +{ + GstCircleGeometricTransformClass parent_class; +}; + +GType gst_kaleidoscope_get_type (void); + +gboolean gst_kaleidoscope_plugin_init (GstPlugin * plugin); + +G_END_DECLS + +#endif /* __GST_KALEIDOSCOPE_H__ */ diff --git a/gst/geometrictransform/plugin.c b/gst/geometrictransform/plugin.c index 19776fdb7..f63e26d88 100644 --- a/gst/geometrictransform/plugin.c +++ b/gst/geometrictransform/plugin.c @@ -21,12 +21,16 @@ #include "config.h" #endif +#include "gstkaleidoscope.h" #include "gstpinch.h" #include "gsttwirl.h" static gboolean plugin_init (GstPlugin * plugin) { + if (!gst_kaleidoscope_plugin_init (plugin)) + return FALSE; + if (!gst_pinch_plugin_init (plugin)) return FALSE; |