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//	RGBQuant version 1.0 
//	Copyright 1997, Chris Losinger 
//	All Rights Reserved 
//	 
// Redistribution and use in source and binary forms are freely permitted 
// provided that the above copyright notice and attibution and date of work 
// and this paragraph are duplicated in all such forms. 
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR 
// IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 
// WARRANTIES OF MERCHANTIBILILTY AND FITNESS FOR A PARTICULAR PURPOSE. 
// 
// This code is based on Edward McCreary's DIBQuant 1.0 
 
/*  
** DIBQuant version 1.0 
** Copyright (c) 1993 Edward McCreary. 
** All rights reserved. 
** 
** Redistribution and use in source and binary forms are freely permitted 
** provided that the above copyright notice and attibution and date of work 
** and this paragraph are duplicated in all such forms. 
** THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR 
** IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 
** WARRANTIES OF MERCHANTIBILILTY AND FITNESS FOR A PARTICULAR PURPOSE. 
*/ 
 
#ifndef _DIBQUANT_H 
#define _DIBQUANT_H 
 
/* palette generation methods */ 
#define IDX_MEDIAN          0       /* perform median cut */ 
#define IDX_POPULARITY      1       /* perform popularity sort */ 
#define IDX_DEFAULT         2       /* use default palette */ 
 
/* dithering methods */ 
#define IDX_NONE            0       /* no dither */ 
#define IDX_ORDERED         1       /* ordered dither */ 
#define IDX_JITTER          2       /* jitter preprocessing */ 
 
#ifdef __cplusplus 
extern "C" { 
#endif 
 
 
/////////////////////////////////////////////////////////////////////////// 
// main procedure, quantize 24-bit rgb to 8-bit 
// 
//	this procedure was originally called QuantizeDIB, as it operated on DIBs. 
//	i stripped all the DIB stuff out, to enable this to operate on plain RGB buffers. 
//	-cdl 
 
BOOL FAR PASCAL QuantizeRGB(BYTE * inBuf,		// input 24-bit RGB!! must be (width * height * 3) BYTEs 
							BYTE * outBuf,		// output 8-bit, allocated by caller!! must be (width * height) BYTEs 
							long width,			// pixels!! 
							long height, 
							RGBQUAD *outPal,	// 256 vals 
							int nPalette,		// type  
							int nDither,		// type 
							FARPROC lpStatus);	// callback, if you wish, else NULL 
 
 
#ifdef __cplusplus 
} 
#endif 
 
#endif /* _DIBQUANT_H */