From 9ee12f94deee3c9bf7abf4e1b3afb1434c6147e2 Mon Sep 17 00:00:00 2001 From: Filippo Argiolas Date: Mon, 2 Aug 2010 11:12:42 +0200 Subject: [PATCH] geometrictransform: new filter "mirror" Ports gleffects "mirror" filter to geometrictransform. Simple yet effective mirror effect, splits the image into halves and reflect the first into the second. https://bugzilla.gnome.org/show_bug.cgi?id=625722 --- gst/geometrictransform/Makefile.am | 6 +- gst/geometrictransform/gstmirror.c | 128 +++++++++++++++++++++++++++++ gst/geometrictransform/gstmirror.h | 83 +++++++++++++++++++ gst/geometrictransform/plugin.c | 4 + 4 files changed, 219 insertions(+), 2 deletions(-) create mode 100644 gst/geometrictransform/gstmirror.c create mode 100644 gst/geometrictransform/gstmirror.h diff --git a/gst/geometrictransform/Makefile.am b/gst/geometrictransform/Makefile.am index 9d3de283ff..da9ec7ee2f 100644 --- a/gst/geometrictransform/Makefile.am +++ b/gst/geometrictransform/Makefile.am @@ -15,7 +15,8 @@ libgstgeometrictransform_la_SOURCES = plugin.c \ gststretch.c \ gstbulge.c \ gsttunnel.c \ - gstsquare.c + gstsquare.c \ + gstmirror.c libgstgeometrictransform_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) \ $(GST_PLUGINS_BASE_CFLAGS) \ @@ -43,4 +44,5 @@ noinst_HEADERS = gstgeometrictransform.h \ gststretch.h \ gstbulge.h \ gsttunnel.h \ - gstsquare.h + gstsquare.h \ + gstmirror.h diff --git a/gst/geometrictransform/gstmirror.c b/gst/geometrictransform/gstmirror.c new file mode 100644 index 0000000000..d2cbc18485 --- /dev/null +++ b/gst/geometrictransform/gstmirror.c @@ -0,0 +1,128 @@ +/* + * GStreamer + * Copyright (C) 2010 Filippo Argiolas + * + * 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. + */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include + +#include "gstmirror.h" + +GST_DEBUG_CATEGORY_STATIC (gst_mirror_debug); +#define GST_CAT_DEFAULT gst_mirror_debug + +GST_BOILERPLATE (GstMirror, gst_mirror, GstGeometricTransform, + GST_TYPE_GEOMETRIC_TRANSFORM); + +/* GObject vmethod implementations */ + +static void +gst_mirror_base_init (gpointer gclass) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (gclass); + + gst_element_class_set_details_simple (element_class, + "mirror", + "Transform/Effect/Video", + "Split the image into two halves and reflect one over each other", + "Filippo Argiolas width / 2.0; + + /* possible parameters: + - split horizontal/vertical + - reflect left half into right half or viceversa + - reflect top half into bottom half or viceversa + */ + if (x > hw) + *in_x = gt->width - 1 - x; + else + *in_x = x; + + *in_y = y; + + GST_DEBUG_OBJECT (mirror, "Inversely mapped %d %d into %lf %lf", + x, y, *in_x, *in_y); + + return TRUE; +} + +static void +gst_mirror_class_init (GstMirrorClass * klass) +{ + GObjectClass *gobject_class; + GstGeometricTransformClass *gstgt_class; + + gobject_class = (GObjectClass *) klass; + gstgt_class = (GstGeometricTransformClass *) klass; + + parent_class = g_type_class_peek_parent (klass); + + gstgt_class->map_func = mirror_map; +} + +static void +gst_mirror_init (GstMirror * filter, GstMirrorClass * gclass) +{ + GstGeometricTransform *gt = GST_GEOMETRIC_TRANSFORM (filter); + + gt->off_edge_pixels = GST_GT_OFF_EDGES_PIXELS_CLAMP; +} + +gboolean +gst_mirror_plugin_init (GstPlugin * plugin) +{ + GST_DEBUG_CATEGORY_INIT (gst_mirror_debug, "mirror", 0, "mirror"); + + return gst_element_register (plugin, "mirror", GST_RANK_NONE, + GST_TYPE_MIRROR); +} diff --git a/gst/geometrictransform/gstmirror.h b/gst/geometrictransform/gstmirror.h new file mode 100644 index 0000000000..8c9abab7ca --- /dev/null +++ b/gst/geometrictransform/gstmirror.h @@ -0,0 +1,83 @@ +/* + * GStreamer + * Copyright (C) 2010 Filippo Argiolas + * + * 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_MIRROR_H__ +#define __GST_MIRROR_H__ + +#include +#include "gstgeometrictransform.h" +#include "geometricmath.h" + +G_BEGIN_DECLS +/* #defines don't like whitespacey bits */ +#define GST_TYPE_MIRROR \ + (gst_mirror_get_type()) +#define GST_MIRROR(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MIRROR,GstMirror)) +#define GST_MIRROR_CAST(obj) \ + ((GstMirror *)(obj)) +#define GST_MIRROR_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MIRROR,GstMirrorClass)) +#define GST_IS_MIRROR(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MIRROR)) +#define GST_IS_MIRROR_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MIRROR)) +typedef struct _GstMirror GstMirror; +typedef struct _GstMirrorClass GstMirrorClass; + +struct _GstMirror +{ + GstGeometricTransform element; +}; + +struct _GstMirrorClass +{ + GstGeometricTransformClass parent_class; +}; + +GType gst_mirror_get_type (void); + +gboolean gst_mirror_plugin_init (GstPlugin * plugin); + +G_END_DECLS +#endif /* __GST_MIRROR_H__ */ diff --git a/gst/geometrictransform/plugin.c b/gst/geometrictransform/plugin.c index abcddcac0c..f1bf9ee41d 100644 --- a/gst/geometrictransform/plugin.c +++ b/gst/geometrictransform/plugin.c @@ -33,6 +33,7 @@ #include "gstbulge.h" #include "gsttunnel.h" #include "gstsquare.h" +#include "gstmirror.h" static gboolean plugin_init (GstPlugin * plugin) @@ -73,6 +74,9 @@ plugin_init (GstPlugin * plugin) if (!gst_square_plugin_init (plugin)) return FALSE; + if (!gst_mirror_plugin_init (plugin)) + return FALSE; + return TRUE; }