include/filters/GP_Arithmetic.h

   1 /*****************************************************************************
   2  * This file is part of gfxprim library.                                     *
   3  *                                                                           *
   4  * Gfxprim is free software; you can redistribute it and/or                  *
   5  * modify it under the terms of the GNU Lesser General Public                *
   6  * License as published by the Free Software Foundation; either              *
   7  * version 2.1 of the License, or (at your option) any later version.        *
   8  *                                                                           *
   9  * Gfxprim is distributed in the hope that it will be useful,                *
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         *
  12  * Lesser General Public License for more details.                           *
  13  *                                                                           *
  14  * You should have received a copy of the GNU Lesser General Public          *
  15  * License along with gfxprim; if not, write to the Free Software            *
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                        *
  17  * Boston, MA  02110-1301  USA                                               *
  18  *                                                                           *
  19  * Copyright (C) 2009-2012 Cyril Hrubis <metan@ucw.cz>                       *
  20  *                                                                           *
  21  *****************************************************************************/
  22
  23 /*
  24
  25   Arithmetic filters - compute products of two bitmaps.
  26
  27  */
  28
  29 #ifndef FILTERS_GP_ARITHMETIC_H
  30 #define FILTERS_GP_ARITHMETIC_H
  31
  32 #include "GP_Filter.h"
  33
  34 /*
  35  * Addition filter.
  36  *
  37  * Produces saturated (clamped) addtion.
  38  */
  39 int GP_FilterAddition(const GP_Pixmap *src_a,
  40                       const GP_Pixmap *src_b,
  41                       GP_Pixmap *dst,
  42                       GP_ProgressCallback *callback);
  43
  44 GP_Pixmap *GP_FilterAdditionAlloc(const GP_Pixmap *src_a,
  45                                    const GP_Pixmap *src_b,
  46                                    GP_ProgressCallback *callback);
  47
  48 /*
  49  * Multiply filter.
  50  *
  51  * Produces saturated (clamped) multiplication.
  52  */
  53 int GP_FilterMultiply(const GP_Pixmap *src_a,
  54                       const GP_Pixmap *src_b,
  55                       GP_Pixmap *dst,
  56                       GP_ProgressCallback *callback);
  57
  58 GP_Pixmap *GP_FilterMultiplyAlloc(const GP_Pixmap *src_a,
  59                                    const GP_Pixmap *src_b,
  60                                    GP_ProgressCallback *callback);
  61
  62 /*
  63  * Difference filter.
  64  *
  65  * Produces symetric difference.
  66  * eg. dst = abs(src_a - src_b)
  67  */
  68 int GP_FilterDifference(const GP_Pixmap *src_a,
  69                         const GP_Pixmap *src_b,
  70                         GP_Pixmap *dst,
  71                         GP_ProgressCallback *callback);
  72
  73 GP_Pixmap *GP_FilterDifferenceAlloc(const GP_Pixmap *src_a,
  74                                      const GP_Pixmap *src_b,
  75                                      GP_ProgressCallback *callback);
  76
  77 /*
  78  * Maximum filter.
  79  */
  80 int GP_FilterMax(const GP_Pixmap *src_a,
  81                  const GP_Pixmap *src_b,
  82                  GP_Pixmap *dst,
  83                  GP_ProgressCallback *callback);
  84
  85 GP_Pixmap *GP_FilterMaxAlloc(const GP_Pixmap *src_a,
  86                               const GP_Pixmap *src_b,
  87                               GP_ProgressCallback *callback);
  88
  89 /*
  90  * Minimum filter.
  91  */
  92 int GP_FilterMin(const GP_Pixmap *src_a,
  93                  const GP_Pixmap *src_b,
  94                  GP_Pixmap *dst,
  95                  GP_ProgressCallback *callback);
  96
  97 GP_Pixmap *GP_FilterMinAlloc(const GP_Pixmap *src_a,
  98                               const GP_Pixmap *src_b,
  99                               GP_ProgressCallback *callback);
 100
 101 #endif /* FILTERS_GP_ARITHMETIC_H */