gd_tga.h

#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
    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
    int colormaplength;   // number of colours in palette
    uint8_t colormapbits; // number of bits per palette entry 15,16,24,32
 
    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
    uint8_t has_alpha; // decoded image contains alpha
    char *ident;       // identifcation tag string
    int *bitmap;       // bitmap data
    int *colormap;     // decoded color map
 
} 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(gdIOCtxPtr ctx, oTga *tga);
int read_image_tga(gdIOCtxPtr ctx, oTga *tga);
void free_tga(oTga *tga);
 
#endif //__TGA_H