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/*
* wfalib.h
*
* Written by: Ullrich Hafner
*
* This file is part of FIASCO (Fractal Image And Sequence COdec)
* Copyright (C) 1994-2000 Ullrich Hafner
*/
/*
* $Date: 2000/06/14 20:50:51 $
* $Author: hafner $
* $Revision: 5.1 $
* $State: Exp $
*/
#ifndef _WFALIB_H
#define _WFALIB_H
#include "types.h"
#include "wfa.h"
#include "list.h"
typedef struct range_sort
{
u_word_t *range_state;
byte_t *range_label;
u_word_t *range_max_domain;
bool_t *range_subdivided;
unsigned range_no;
} range_sort_t;
bool_t
locate_delta_images (wfa_t *wfa);
void
sort_ranges (unsigned state, unsigned *domain,
range_sort_t *rs, const wfa_t *wfa);
bool_t
find_range (unsigned x, unsigned y, unsigned band,
const wfa_t *wfa, unsigned *range_state, unsigned *range_label);
void
compute_spiral (int *vorder, unsigned image_width, unsigned image_height,
unsigned tiling_exp, bool_t inc_spiral);
void
locate_subimage (unsigned orig_level, unsigned level, unsigned bintree,
unsigned *x, unsigned *y, unsigned *width, unsigned *height);
void
copy_wfa (wfa_t *dst, const wfa_t *src);
void
remove_states (unsigned from, wfa_t *wfa);
void
append_edge (unsigned from, unsigned into, real_t weight,
unsigned label, wfa_t *wfa);
word_t *
compute_hits (unsigned from, unsigned to, unsigned n, const wfa_t *wfa);
real_t
compute_final_distribution (unsigned state, const wfa_t *wfa);
wfa_t *
alloc_wfa (bool_t coding);
void
free_wfa (wfa_t *wfa);
bool_t
locate_delta_images (wfa_t *wfa);
#endif /* not _WFALIB_H */
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