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/* tga.h: Targa TrueVision image file handling routines
//
// Copyright (C) 1994-1999 by Michael J. Gourlay
//
// Provided as is. No warrantees, express or implied.
*/
#ifndef _TGA_H__INCLUDED_
#define _TGA_H__INCLUDED_
#include <stdio.h>
#include "RgbaImage.h"
typedef struct tga_hdr_ {
unsigned char id_len;
unsigned char cmap_type;
unsigned char img_type;
int cmap_index;
int cmap_len;
unsigned char cmap_size; /* cmap entry size in bits */
int x_off;
int y_off;
unsigned char pixel_size;
unsigned char att_bits;
unsigned char reserved;
unsigned char origin_bit; /* origin location: 0=lower 1=upper */
unsigned char interleave;
int mapped; /* whether image is colormapped (not in file) */
} tga_hdr_t;
/* Targe image types */
#define TGA_Null 0
#define TGA_Map 1
#define TGA_RGB 2
#define TGA_Mono 3
#define TGA_RLE_Map 9
#define TGA_RLE_RGB 10
#define TGA_RLE_Mono 11
#define TGA_CompMap 32
#define TGA_CompMap4 33
/* TGA_RLE is not an image type, but just a value that means "RLE" is used */
#define TGA_RLE 8
/* Interleave flag values */
#define TGA_IL_None 0
#define TGA_IL_Two 1
#define TGA_IL_Four 2
#define TARGA_MAGIC 'T' + 256 * 'G'
extern RgbaImageT tga_cmap;
extern int tgaRead(tga_hdr_t *tgaP, RgbaImageT *imgP, FILE *fio);
extern int tgaHeaderRead(tga_hdr_t *tgaP, RgbaImageT *imgP, FILE *fio);
extern int tgaWrite(tga_hdr_t *tgaP, RgbaImageT *imgP, FILE *fio);
extern int tgaHeaderWrite(tga_hdr_t *tgaP, RgbaImageT *imgP, FILE *fio);
#endif /* _TGA_H__INCLUDED_ */
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