/*
 *	floatimg.h
 */

#define		FIMG_VERSION	66

/*
 *	in memory descriptor
 */
typedef struct {
	int		width;
	int		height;
	int		type;
	float		fval;
	int		count;

	float		*R, *G, *B, *A;

	int		reserved;
	} FloatImg;

/*
 *	fimg file header
 */
typedef struct {
	char		magic[8];
	int		w, h, t;
	} FimgFileHead;


#define FIMG_TYPE_GRAY			1
#define FIMG_TYPE_RGB			3
#define FIMG_TYPE_RGBA			4

/*
 *	core module
 */
int   fimg_create(FloatImg *fimg, int w, int h, int t);
int   fimg_destroy(FloatImg *fimg);

int   fimg_print_version(int k);
void  fimg_printhead(FloatImg *h);
int   fimg_describe(FloatImg *head, char *txt);
int   fimg_fileinfo(char *fname, int *datas);
int   fimg_plot_rgb (FloatImg *head, int x, int y, float r, float g, float b);
int   fimg_clear(FloatImg *fimg);
int   fimg_add_rgb(FloatImg *head, int x, int y, float r, float g, float b);

/*	'operats' module 		*/
int fimg_add(FloatImg *a, FloatImg *b, FloatImg *d);
int fimg_sub(FloatImg *a, FloatImg *b, FloatImg *d);
int fimg_mul(FloatImg *a, FloatImg *b, FloatImg *d);

/*	PNM files module		*/
int fimg_save_as_pnm(FloatImg *head, char *fname, int notused);
int fimg_load_from_pnm(char *fname, FloatImg *head, int notused);

double fimg_timer_set(int whot);
double fimg_timer_get(int whot);


/*	FIMG files module		*/
int   fimg_fileinfos(char *fname, int *datas);
int   fimg_dump_to_file(FloatImg *head, char *fname, int notused);
int   fimg_create_from_dump(char *fname, FloatImg *head);

/*	mathematics oprations */
float fimg_get_maxvalue(FloatImg *head);
int   fimg_meanvalues(FloatImg *head, float means[4]);
int   fimg_to_gray(FloatImg *head);
void  fimg_add_cste(FloatImg *fi, float value);
void  fimg_drand48(FloatImg *fi, float kmul);

/*	various funcs modules		*/
int   fimg_load_from_png(char *filename, FloatImg *fimg);
int   fimg_create_from_png(char *filename, FloatImg *fimg);
int   fimg_save_as_png(FloatImg *src, char *outname, int flags);

int   fimg_draw_something(FloatImg *fimg);