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  1. /*
  2.  * This file is part of the Scale2x project.
  3.  *
  4.  * Copyright (C) 2003 Andrea Mazzoleni
  5.  *
  6.  * This program is free software; you can redistribute it and/or modify
  7.  * it under the terms of the GNU General Public License as published by
  8.  * the Free Software Foundation; either version 2 of the License, or
  9.  * (at your option) any later version.
  10.  *
  11.  * This program is distributed in the hope that it will be useful,
  12.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14.  * GNU General Public License for more details.
  15.  *
  16.  * You should have received a copy of the GNU General Public License
  17.  * along with this program; if not, write to the Free Software
  18.  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19.  */
  20.  
  21. /*
  22.  * This file contains an example implementation of the Scale effect
  23.  * applyed to a generic bitmap.
  24.  *
  25.  * You can find an high level description of the effect at :
  26.  *
  27.  * http://scale2x.sourceforge.net/
  28.  *
  29.  * Alternatively at the previous license terms, you are allowed to use this
  30.  * code in your program with these conditions:
  31.  * - the program is not used in commercial activities.
  32.  * - the whole source code of the program is released with the binary.
  33.  * - derivative works of the program are allowed.
  34.  */
  35.  
  36. #ifndef __SCALEBIT_H
  37. #define __SCALEBIT_H
  38.  
  39. int scale_precondition(unsigned scale, unsigned pixel, unsigned width, unsigned height);
  40. void scale(unsigned scale, void* void_dst, unsigned dst_slice, const void* void_src, unsigned src_slice, unsigned pixel, unsigned width, unsigned height);
  41.  
  42. #endif
  43.  
  44.