gd_tga.h File Reference

#include "gd.h"
#include "gdhelpers.h"
#include "gd_intern.h"

Go to the source code of this file.

Data Structures
struct	oTga_

Macros
#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

Typedefs
typedef struct oTga_	oTga

Functions
int	read_header_tga (gdIOCtx *ctx, oTga *tga)
	Reads a TGA header. Reads the header block from a binary TGA file populating the referenced TGA structure.
int	read_image_tga (gdIOCtx *ctx, oTga *tga)
	Reads a TGA image data into buffer. Reads the image data block from a binary TGA file populating the referenced TGA structure.
void	free_tga (oTga *tga)
	Cleans up a TGA structure. Dereferences the bitmap referenced in a TGA structure, then the structure itself.

Macro Definition Documentation

TGA_BPP_16

#define TGA_BPP_16   16

Definition at line 42 of file gd_tga.h.

TGA_BPP_24

#define TGA_BPP_24   24

Definition at line 43 of file gd_tga.h.

TGA_BPP_32

#define TGA_BPP_32   32

Definition at line 44 of file gd_tga.h.

TGA_BPP_8

#define TGA_BPP_8   8

Definition at line 41 of file gd_tga.h.

TGA_RLE_FLAG

#define TGA_RLE_FLAG   128

Definition at line 46 of file gd_tga.h.

TGA_TYPE_GREYSCALE

#define TGA_TYPE_GREYSCALE   3

Definition at line 34 of file gd_tga.h.

TGA_TYPE_GREYSCALE_RLE

#define TGA_TYPE_GREYSCALE_RLE   11

Definition at line 37 of file gd_tga.h.

TGA_TYPE_INDEXED

#define TGA_TYPE_INDEXED   1

Definition at line 32 of file gd_tga.h.

TGA_TYPE_INDEXED_HUFFMAN_DELTA_RLE

#define TGA_TYPE_INDEXED_HUFFMAN_DELTA_RLE   32

Definition at line 38 of file gd_tga.h.

TGA_TYPE_INDEXED_RLE

#define TGA_TYPE_INDEXED_RLE   9

Definition at line 35 of file gd_tga.h.

TGA_TYPE_NO_IMAGE

#define TGA_TYPE_NO_IMAGE   0

Definition at line 31 of file gd_tga.h.

TGA_TYPE_RGB

#define TGA_TYPE_RGB   2

Definition at line 33 of file gd_tga.h.

TGA_TYPE_RGB_HUFFMAN_DELTA_QUADTREE_RLE

#define TGA_TYPE_RGB_HUFFMAN_DELTA_QUADTREE_RLE   33

Definition at line 39 of file gd_tga.h.

TGA_TYPE_RGB_RLE

#define TGA_TYPE_RGB_RLE   10

Definition at line 36 of file gd_tga.h.

Typedef Documentation

oTga

typedef struct oTga_ oTga

Function Documentation

free_tga()

void free_tga

(

oTga *

tga

)

Cleans up a TGA structure. Dereferences the bitmap referenced in a TGA structure, then the structure itself.

Parameters

tga	Pointer to TGA structure

Definition at line 354 of file gd_tga.c.

read_header_tga()

int read_header_tga	(	gdIOCtx *	ctx,
		oTga *	tga )

Reads a TGA header. Reads the header block from a binary TGA file populating the referenced TGA structure.

Parameters

ctx	Pointer to TGA binary file
tga	Pointer to TGA structure

Returns

int 1 on success, -1 on failure

Definition at line 146 of file gd_tga.c.

read_image_tga()

int read_image_tga	(	gdIOCtx *	ctx,
		oTga *	tga )

Reads a TGA image data into buffer. Reads the image data block from a binary TGA file populating the referenced TGA structure.

Parameters

ctx	Pointer to TGA binary file
tga	Pointer to TGA structure

Returns

int 0 on success, -1 on failure

Todo

Add more image type support.

Allocate memmory for image block Allocate a chunk of memory for the image block to be passed into.

Read in uncompressed RGB TGA Chunk load the pixel data from an uncompressed RGB type TGA.

Read in RLE compressed RGB TGA Chunk load the pixel data from an RLE compressed RGB type TGA.

Definition at line 209 of file gd_tga.c.