gd_tga.h

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#ifndef __TGA_H
#define __TGA_H 1
 
#include "gd.h"
#include "gdhelpers.h"
 
#include "gd_intern.h"
 
typedef struct oTga_ {
    uint8_t  identsize;    // size of ID field that follows 18 uint8_t header (0 usually)
    uint8_t  colormaptype;  // type of colour map 0=none, 1=has palette                 [IGNORED] Adrian requested no support
    uint8_t  imagetype;    // type of image 0=none,1=indexed,2=rgb,3=grey,+8=rle packed
 
    int colormapstart; // first colour map entry in palette                        [IGNORED] Adrian requested no support
    int colormaplength;   // number of colours in palette                             [IGNORED] Adrian requested no support
    uint8_t  colormapbits;  // number of bits per palette entry 15,16,24,32             [IGNORED] Adrian requested no support
 
    int xstart;           // image x origin
    int ystart;           // image y origin
    int width;         // image width in pixels
    int height;           // image height in pixels
    uint8_t  bits;          // image bits per pixel 8,16,24,32
    uint8_t alphabits;     // alpha bits (low 4bits of header 17)
    uint8_t fliph;         // horizontal or vertical
    uint8_t flipv;         // flip
    char *ident;       // identifcation tag string
    int *bitmap;      // bitmap data
 
} oTga;
 
#define TGA_TYPE_NO_IMAGE                       0
#define TGA_TYPE_INDEXED                        1
#define TGA_TYPE_RGB                            2
#define TGA_TYPE_GREYSCALE                      3
#define TGA_TYPE_INDEXED_RLE                    9
#define TGA_TYPE_RGB_RLE                        10
#define TGA_TYPE_GREYSCALE_RLE                  11
#define TGA_TYPE_INDEXED_HUFFMAN_DELTA_RLE      32
#define TGA_TYPE_RGB_HUFFMAN_DELTA_QUADTREE_RLE 33
 
#define TGA_BPP_8   8
#define TGA_BPP_16  16
#define TGA_BPP_24  24
#define TGA_BPP_32  32
 
#define TGA_RLE_FLAG    128
 
int read_header_tga(gdIOCtx *ctx, oTga *tga);
int read_image_tga(gdIOCtx *ctx, oTga *tga);
void free_tga(oTga *tga);
 
#endif //__TGA_H