libs/filters/algo/GP_MirrorV.algo.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) 2009-2010 Jiri "BlueBear" Dluhos                            *
  20  *                         <jiri.bluebear.dluhos@gmail.com>                  *
  21  *                                                                           *
  22  * Copyright (C) 2009-2010 Cyril Hrubis <metan@ucw.cz>                       *
  23  *                                                                           *
  24  *****************************************************************************/
  25
  26
  27 #include "core/GP_Clip.h"
  28
  29 #define DEF_MIRRORV_FN(FN_NAME, CONTEXT_T, PIXEL_T, PUTPIXEL, GETPIXEL) \
  30 void FN_NAME(CONTEXT_T context) \
  31 { \
  32         uint32_t x, y; \
  33         PIXEL_T tmp; \
  34 \
  35         for (x = 0; x < context->w/2; x++) { \
  36                 uint32_t xm = context->w - x - 1; \
  37                 for (y = 0; y < context->h; y++) { \
  38                         tmp = GETPIXEL(context, x, y); \
  39 \
  40                         PUTPIXEL(context, x, y, GETPIXEL(context, xm, y)); \
  41                         PUTPIXEL(context, xm, y, tmp); \
  42                 } \
  43         } \
  44 \
  45         GP_MIRROR_V_CLIP(context); \
  46 }