/usr/include/GraphicsMagick/magick/color.h is in libgraphicsmagick1-dev 1.3.12-1.1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 | /*
Copyright (C) 2003 - 2010 GraphicsMagick Group
Copyright (C) 2002 ImageMagick Studio
This program is covered by multiple licenses, which are described in
Copyright.txt. You should have received a copy of Copyright.txt with this
package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.
GraphicsMagick Color Utility Methods.
*/
#ifndef _MAGICK_COLOR_H
#define _MAGICK_COLOR_H
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif /* defined(__cplusplus) || defined(c_plusplus) */
/*
PixelPacket with usage count, used to support color histograms.
*/
typedef struct _HistogramColorPacket
{
PixelPacket
pixel;
unsigned long
count;
} HistogramColorPacket;
extern MagickExport HistogramColorPacket
*GetColorHistogram(const Image *image,unsigned long *colors,
ExceptionInfo *exception);
extern MagickExport unsigned long
GetNumberColors(const Image *image,FILE *file,ExceptionInfo *exception);
extern MagickExport void
GetColorTuple(const PixelPacket *color,const unsigned int depth,
const unsigned int matte,const unsigned int hex,char *tuple);
extern MagickExport MagickBool
IsPaletteImage(const Image *image,ExceptionInfo *exception);
#if defined(MAGICK_IMPLEMENTATION)
/*
Macros for testing a pixel to see if it is grayscale, bilevel,
black, or white
*/
#define IsGray(color) \
(((color).red == (color).green) && ((color).red == (color).blue))
#define IsMonochrome(color) \
(((0 == (color).red) || (MaxRGB == (color).red)) && IsGray(color))
#define IsBlackPixel(color) \
(((color).red == 0U) && IsGray(color))
#define IsWhitePixel(color) \
(((color).red == MaxRGB) && IsGray(color))
/*
Compare two colors
*/
#define ColorMatch(p,q) \
(((p)->red == (q)->red) && \
((p)->green == (q)->green) && \
((p)->blue == (q)->blue))
#define NotColorMatch(p,q) \
(((p)->red != (q)->red) || \
((p)->green != (q)->green) || \
((p)->blue != (q)->blue))
extern MagickExport unsigned int
FuzzyColorMatch(const PixelPacket *p,const PixelPacket *q,const double fuzz);
/*
Compare two pixels (including opacity)
*/
#define PixelMatch(p,q,matte) \
(ColorMatch(p,q) && \
(!matte || ((p)->opacity == (q)->opacity)))
#define NotPixelMatch(p,q,matte) \
(NotColorMatch(p,q) || \
(matte && ((p)->opacity != (q)->opacity)))
#endif /* defined(MAGICK_IMPLEMENTATION) */
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif /* defined(__cplusplus) || defined(c_plusplus) */
#endif /* _MAGICK_COLOR_H */
/*
* Local Variables:
* mode: c
* c-basic-offset: 2
* fill-column: 78
* End:
*/
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