workspace/ksplash/ksplashx/scale.h

   1 // This code is Imlib2 code, additionally modified by Mosfet, and with few small
   2 // modifications for Gwenview. The MMX scaling code also belongs to it.
   3
   4 // The original license texts follow.
   5
   6 /**
   7  * This is the normal smoothscale method, based on Imlib2's smoothscale.
   8  *
   9  * Originally I took the algorithm used in NetPBM and Qt and added MMX/3dnow
  10  * optimizations. It ran in about 1/2 the time as Qt. Then I ported Imlib's
  11  * C algorithm and it ran at about the same speed as my MMX optimized one...
  12  * Finally I ported Imlib's MMX version and it ran in less than half the
  13  * time as my MMX algorithm, (taking only a quarter of the time Qt does).
  14  *
  15  * Changes include formatting, namespaces and other C++'ings, removal of old
  16  * #ifdef'ed code, and removal of unneeded border calculation code.
  17  *
  18  * Imlib2 is (C) Carsten Haitzler and various contributors. The MMX code
  19  * is by Willem Monsuwe <willem@stack.nl>. All other modifications are
  20  * (C) Daniel M. Duley.
  21  */
  22
  23 /*
  24     Copyright (C) 2004 Daniel M. Duley <dan.duley@verizon.net>
  25
  26 Redistribution and use in source and binary forms, with or without
  27 modification, are permitted provided that the following conditions
  28 are met:
  29
  30 1. Redistributions of source code must retain the above copyright
  31    notice, this list of conditions and the following disclaimer.
  32 2. Redistributions in binary form must reproduce the above copyright
  33    notice, this list of conditions and the following disclaimer in the
  34    documentation and/or other materials provided with the distribution.
  35
  36 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  37 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  38 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  39 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  40 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  42 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  43 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  44 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  45 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  46
  47 */
  48
  49 /*
  50 Copyright (C) 2000 Carsten Haitzler and various contributors (see AUTHORS)
  51
  52 Permission is hereby granted, free of charge, to any person obtaining a copy
  53 of this software and associated documentation files (the "Software"), to
  54 deal in the Software without restriction, including without limitation the
  55 rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  56 sell copies of the Software, and to permit persons to whom the Software is
  57 furnished to do so, subject to the following conditions:
  58
  59 The above copyright notice and this permission notice shall be included in
  60 all copies of the Software and its Copyright notices. In addition publicly
  61 documented acknowledgment must be given that this software has been used if no
  62 source code of this software is made available publicly. This includes
  63 acknowledgments in either Copyright notices, Manuals, Publicity and Marketing
  64 documents or any documentation provided with any product containing this
  65 software. This License does not apply to any software that links to the
  66 libraries provided by this software (statically or dynamically), but only to
  67 the software provided.
  68
  69 Please see the COPYING.PLAIN for a plain-english explanation of this notice
  70 and it's intent.
  71
  72 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  73 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  74 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  75 THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  76 IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  77 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  78 */
  79
  80 #ifndef _SCALE_H
  81 #define _SCALE_H
  82
  83 #include <qimage.h>
  84
  85 QImage scale(const QImage& image, int width, int height);
  86
  87 #endif