rosapps/smartpdf/baseutils/pdiff.h

   1 #ifndef PDIFF_H_
   2 #define PDIFF_H_
   3
   4 /*
   5 Copyright (C) 2006 Yangli Hector Yee
   6
   7 This program is free software; you can redistribute it and/or modify it under the terms of the
   8 GNU General Public License as published by the Free Software Foundation; either version 2 of the License,
   9 or (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  12 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License along with this program;
  16 if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  17
  18 Code from http://pdiff.sourceforge.net
  19 */
  20
  21 class RGBAImage
  22 {
  23 public:
  24     virtual int Get_Width(void) const  = 0;
  25     virtual int Get_Height(void) const = 0;
  26     virtual unsigned char Get_Red(unsigned int i) = 0;
  27     virtual unsigned char Get_Green(unsigned int i) = 0;
  28     virtual unsigned char Get_Blue(unsigned int i) = 0;
  29     virtual unsigned char Get_Alpha(unsigned int i) = 0;
  30     virtual void Set(unsigned char r, unsigned char g, unsigned char b, unsigned char a, unsigned int i) = 0;
  31     virtual unsigned int Get(int i) const = 0;
  32 };
  33
  34 class RGBAImageData : RGBAImage
  35 {
  36 public:
  37     RGBAImageData(int w, int h)
  38     {
  39         Width = w;
  40         Height = h;
  41         Data = new unsigned int[w * h];
  42     };
  43     ~RGBAImageData() { if (Data) delete[] Data; }
  44     unsigned char Get_Red(unsigned int i) { return (Data[i] & 0xFF); }
  45     unsigned char Get_Green(unsigned int i) { return ((Data[i]>>8) & 0xFF); }
  46     unsigned char Get_Blue(unsigned int i) { return ((Data[i]>>16) & 0xFF); }
  47     unsigned char Get_Alpha(unsigned int i) { return ((Data[i]>>24) & 0xFF); }
  48     void Set(unsigned char r, unsigned char g, unsigned char b, unsigned char a, unsigned int i)
  49     { Data[i] = r | (g << 8) | (b << 16) | (a << 24); }
  50     int Get_Width(void) const { return Width; }
  51     int Get_Height(void) const { return Height; }
  52     void Set(int x, int y, unsigned int d) { Data[x + y * Width] = d; }
  53     unsigned int Get(int x, int y) const { return Data[x + y * Width]; }
  54     unsigned int Get(int i) const { return Data[i]; }
  55
  56 protected:
  57     int             Width;
  58     int             Height;
  59     unsigned int *  Data;
  60 };
  61
  62 class CompareArgs {
  63 public:
  64     CompareArgs();
  65     ~CompareArgs();
  66
  67     RGBAImage       *ImgA;
  68     RGBAImage       *ImgB;
  69     RGBAImage       *ImgDiff;
  70     float           FieldOfView;        // Field of view in degrees
  71     float           Gamma;              // The gamma to convert to linear color space
  72     float           Luminance;          // the display's luminance
  73 };
  74
  75 #define DIFFERENT_SIZES (unsigned long)-1
  76 #define IDENTICAL (unsigned long)0
  77
  78 unsigned long Yee_Compare(CompareArgs &args);
  79
  80 #endif
  81