1 /* 2 * GStreamer 3 * Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk> 4 * 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 40 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 41 * Boston, MA 02110-1301, USA. 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 #ifndef __GEOMETRIC_MATH_H__ 51 #define __GEOMETRIC_MATH_H__ 52 53 #include <gst/gst.h> 54 55 G_BEGIN_DECLS 56 57 typedef struct _GstGMNoise GstGMNoise; 58 59 GstGMNoise * gst_gm_noise_new (void); 60 void gst_gm_noise_free (GstGMNoise * noise); 61 gdouble gst_gm_noise_2 (GstGMNoise * noise, gdouble x, gdouble y); 62 63 gdouble gst_gm_mod_float (gdouble a, gdouble b); 64 gdouble gst_gm_triangle (gdouble x); 65 66 gdouble gst_gm_smoothstep (gdouble edge0, gdouble edge1, gdouble x); 67 68 G_END_DECLS 69 70 #endif /* __GEOMETRIC_MATH_H__ */ 71