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/* tga.h - header file for Targa files
*/
/* Header definition. */
struct ImageHeader {
unsigned char IdLength; /* length of Identifier String */
unsigned char CoMapType; /* 0 = no map */
unsigned char ImgType; /* image type (see below for values) */
unsigned char Index_lo, Index_hi; /* index of first color map entry */
unsigned char Length_lo, Length_hi; /* number of entries in color map */
unsigned char CoSize; /* size of color map entry (15,16,24,32) */
unsigned char X_org_lo, X_org_hi; /* x origin of image */
unsigned char Y_org_lo, Y_org_hi; /* y origin of image */
unsigned char Width_lo, Width_hi; /* width of image */
unsigned char Height_lo, Height_hi; /* height of image */
unsigned char PixelSize; /* pixel size (8,16,24,32) */
unsigned char AttBits; /* 4 bits, number of attribute bits per pixel */
unsigned char Rsrvd; /* 1 bit, reserved */
unsigned char OrgBit; /* 1 bit, origin: 0=lower left, 1=upper left */
unsigned char IntrLve; /* 2 bits, interleaving flag */
const char * Id; /* Identifier String. Length is IDLength, above */
};
#define IMAGEIDFIELDMAXSIZE 256
typedef char ImageIDField[IMAGEIDFIELDMAXSIZE];
#define TGA_MAXVAL 255
/* Definitions for image types. */
#define TGA_Null 0
#define TGA_Map 1
#define TGA_RGB 2
#define TGA_Mono 3
#define TGA_RLEMap 9
#define TGA_RLERGB 10
#define TGA_RLEMono 11
#define TGA_CompMap 32
#define TGA_CompMap4 33
/* Definitions for interleave flag. */
#define TGA_IL_None 0
#define TGA_IL_Two 1
#define TGA_IL_Four 2
enum TGAbaseImageType {TGA_MAP_TYPE, TGA_MONO_TYPE, TGA_RGB_TYPE};
enum TGAmapType {
/* A type of Targa color map */
TGA_MAPTYPE_SHORT,
/* Each entry in the color map is 2 bytes: 5 bits each of
red, green, and blue, and one optional alpha bit.
*/
TGA_MAPTYPE_LONG
/* Each entry in the color map is 3 bytes: red, green, and blue,
plus one optional alpha byte
*/
};
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