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/*
** THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED ONLY
** PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO RIGHT
** TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX
** INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM THE
** DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC(info@3dfx.com).
** THIS PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
** EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A
** FULL TEXT OF THE NON-WARRANTY PROVISIONS.
**
** USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO
** RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS IN
** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013,
** AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR
** SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF
** THE UNITED STATES.
**
** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
**
** $Revision: 1.2 $
** $Date: 2000/06/15 00:11:40 $
*/
#ifndef __TEXUSINT_H__
#define __TEXUSINT_H__
#include "texus.h"
#define GR_TEXFMT_SIZE(x) ((x < GR_TEXFMT_16BIT) ? 1: \
((x < GR_TEXFMT_32BIT) ? 2: 4))
#define TX_OFORMAT_3DF 10
#define TX_OFORMAT_TGA 11
#define TX_OFORMAT_PPM 12
#define TX_MAX_LEVEL 16
typedef struct _TxMip {
int format; // GR_TEXFMT_...
int width; // pixels
int height; // pixels
int depth; // mipmap levels
int size; // bytes
void *data[TX_MAX_LEVEL];
FxU32 pal[256];
} TxMip;
FxBool txMipRead(TxMip *txMip, const char *filename, int preferredFormat);
FxBool txMipReadFromFP(TxMip *txMip, const char *debug_filename, FILE *file, int preferredFormat);
void txMipWrite(TxMip *txMip, char *file, char *ext, int split);
void txMipResample(TxMip *destMip, TxMip *srcMip);
void txMipClamp( TxMip *dstMip, TxMip *srcMip );
void txMipMipmap(TxMip *txMip);
void txMipQuantize(TxMip *pxMip, TxMip *txMip, int fmt, FxU32 d, FxU32 comp);
void txMipNcc(TxMip *pxMip, TxMip *txMip, int fmt, FxU32 dither, FxU32 comp);
void txMipNccNNet(TxMip *pxMip, TxMip *txMip, int fmt, FxU32 dither, FxU32 comp);
int txMipPal256(TxMip *pxMip, TxMip *txMip, int fmt, FxU32 dither, FxU32 comp);
void txMipDequantize(TxMip *txMip, TxMip *pxMip);
void txMipView(TxMip *txMip, char *filename, int wait, int bgcolor);
void txViewClose();
int txLog2(int n);
int txFloorPow2(int n);
int txCeilPow2(int n);
int txGCD(int a, int b);
int txAspectRatio(int w, int h);
void txPanic(char *);
void txError(char *);
void txYABtoPal256(int *palette, const int* yabTable);
void txRectCopy(FxU8 *dst, int dstStride, const FxU8 *src, int srcStride,
int width, int height);
FxBool txMipAlloc(TxMip *txMip);
FxBool txMipSetMipPointers(TxMip *txMip);
int txMemRequired(TxMip *txMip);
void txBasename(const char *name, char *base);
void txPathAndBasename(const char *name, char* pathbase);
void txExtension(const char *name, char *ext);
void txMipFree( TxMip *mip );
void txMipTrueToFixedPal( TxMip *outputMip, TxMip *trueColorMip, const FxU32 *pal,
FxU32 flags );
extern int txVerbose;
extern int *explode3;
#define DISTANCE(ar, ag, ab, br, bg, bb) \
((explode3[(ar)-(br)] << 1) + (explode3[(ag)-(bg)]<<2) + explode3[(ab)-(bb)])
void txDiffuseIndex(TxMip *pxMip, TxMip *txMip, int pixsize,
const FxU32 *palette, int ncolors);
int txNearestColor(int ir, int ig, int ib, const FxU32 *pal, int npal);
FxBool _txReadTGAHeader( FILE *stream, FxU32 cookie, TxMip *info);
FxBool _txReadTGAData( FILE *stream, TxMip *info);
FxBool _txReadRGTHeader( FILE *stream, FxU32 cookie, TxMip *info);
FxBool _txReadRGTData( FILE *stream, TxMip *info);
FxBool _txReadSBIHeader( FILE *stream, FxU32 cookie, TxMip *info);
FxBool _txReadSBIData( FILE *stream, TxMip *info);
FxBool _txReadPPMHeader( FILE *stream, FxU32 cookie, TxMip *info);
FxBool _txReadPPMData( FILE *stream, TxMip *info);
FxBool _txRead3DFHeader( FILE *stream, FxU32 cookie, TxMip *info);
FxBool _txRead3DFData( FILE *stream, TxMip *info);
int _txReadHeader( FILE *stream, TxMip *info );
void txPalToNcc( GuNccTable *ncc_table, const FxU32 *pal );
void txNccToPal( FxU32 *pal, const GuNccTable *ncc_table );
#ifdef GLIDE3
#define MAX_TEXWIDTH 2048
#else
#define MAX_TEXWIDTH 1024
#endif
extern TxErrorCallbackFnc_t _txErrorCallback;
extern char *Format_Name[];
#endif /* __TEXUSINT_H__ */
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