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64 lines
1.2 KiB
64 lines
1.2 KiB
/*
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dither 8 bit depth yuv images
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Copyright (C) 2000 Martin Vogt
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation.
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For more information look at the file COPYRIGHT in this package
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*/
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#ifndef __DITHER_8BIT_H
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#define __DITHER_8BIT_H
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#include "colorTable8Bit.h"
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#define DITH_SIZE 16
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class Dither8Bit {
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/* Structures used to implement hybrid ordered dither/floyd-steinberg
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dither algorithm.
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*/
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unsigned char *l_darrays[DITH_SIZE];
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unsigned char *cr_darrays[DITH_SIZE];
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unsigned char *cb_darrays[DITH_SIZE];
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// private colormap
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unsigned char pixel[256];
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ColorTable8Bit* colorTable8Bit;
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// Arrays holding quantized value ranged for lum, cr, and cb.
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// (used for 8 Bit)
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int* lum_values;
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int* cr_values;
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int* cb_values;
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public:
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Dither8Bit(unsigned char pixel[256]);
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~Dither8Bit();
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void ditherImageOrdered (unsigned char* lum,
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unsigned char* cr,
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unsigned char* cb,
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unsigned char* out,
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int h,
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int w);
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private:
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void initOrderedDither();
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};
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#endif
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