tgalib.h

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//
// TGA lib for cocos2d-iphone
//
// sources from: http://www.lighthouse3d.com/opengl/terrain/index.php3?tgasource
//

//#ifndef TGA_LIB
//#define TGA_LIB

enum {
	TGA_OK,
	TGA_ERROR_FILE_OPEN,
	TGA_ERROR_READING_FILE,
	TGA_ERROR_INDEXED_COLOR,
	TGA_ERROR_MEMORY,
	TGA_ERROR_COMPRESSED_FILE,
};

/** TGA format */
typedef struct sImageTGA {
	int status;
	unsigned char type, pixelDepth;
	
	/** map width */
	short int width;
	
	/** map height */
	short int height;
	
	/** raw data */
	unsigned char *imageData;
	int flipped;
} tImageTGA;

// load the image header fields. We only keep those that matter!
void tgaLoadHeader(FILE *file, tImageTGA *info);

// loads the image pixels. You shouldn't call this function directly
void tgaLoadImageData(FILE *file, tImageTGA *info);

// this is the function to call when we want to load an image
tImageTGA * tgaLoad(const char *filename);

// converts RGB to greyscale
void tgaRGBtogreyscale(tImageTGA *info);

// releases the memory used for the image
void tgaDestroy(tImageTGA *info);

//#endif // TGA_LIB