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/*
* wfa.h
*
* Written by: Ullrich Hafner
*
* This file is part of FIASCO («F»ractal «I»mage «A»nd «S»equence «CO»dec)
* Copyright (C) 1994-2000 Ullrich Hafner <hafner@bigfoot.de>
*/
/*
* $Date: 2000/07/18 15:44:57 $
* $Author: hafner $
* $Revision: 5.3 $
* $State: Exp $
*/
#ifndef _WFA_H
#define _WFA_H
#define MAXEDGES 5
#define MAXSTATES 6000
#define MAXLABELS 2 /* only bintree possible anymore */
#define MAXLEVEL 22
#define FIASCO_BINFILE_RELEASE 2
#define FIASCO_MAGIC "FIASCO" /* FIASCO magic number */
#define FIASCO_BASIS_MAGIC "Fiasco" /* FIASCO initial basis */
#define NO_EDGE -1
#define RANGE -1
#define NO_RANGE 0
#define CHILD 1
#define LEAF 0
#define MAX_PROB 9
#define MIN_PROB 1
/*
* WFA state types:
* 0: state is not allowed to be used in an
* approximation and it's image is not needed
* for ip computations.
* AUXILIARY_MASK: state is required for computation of ip's but is not
* allowed to be used in an approximation.
* USE_DOMAIN_MASK: state is allowed to be used in an approximation.
*/
enum state_types {AUXILIARY_MASK = 1 << 0, USE_DOMAIN_MASK = 1 << 1};
#define isedge(x) ((x) != NO_EDGE)
#define isdomain(x) ((x) != NO_EDGE)
#define isrange(x) ((x) == RANGE)
#define ischild(x) ((x) != RANGE)
#define isauxiliary(d,wfa) ((wfa)->domain_type[d] & AUXILIARY_MASK)
#define usedomain(d, wfa) ((wfa)->domain_type[d] & USE_DOMAIN_MASK)
#define need_image(d,wfa) (isauxiliary ((d), (wfa)) || usedomain ((d), (wfa)))
typedef enum mc_type {NONE, FORWARD, BACKWARD, INTERPOLATED} mc_type_e;
typedef enum frame_type {I_FRAME, P_FRAME, B_FRAME} frame_type_e;
typedef enum header {HEADER_END, HEADER_TITLE, HEADER_COMMENT} header_type_e;
typedef struct mv
/*
* Motion vector components
*/
{
mc_type_e type; /* motion compensation type */
int fx, fy; /* forward vector coordinates */
int bx, by; /* backward vector coordinates */
} mv_t;
typedef struct range_info
{
unsigned x, y; /* coordinates of upper left corner */
unsigned level; /* bintree level of range */
} range_info_t;
#include "image.h"
#include "rpf.h"
#include "bit-io.h"
typedef struct wfa_info
{
char *wfa_name; /* filename of the WFA */
char *basis_name; /* filename of the initial basis */
char *title; /* title of FIASCO stream */
char *comment; /* comment for FIASCO stream */
unsigned max_states; /* max. cardinality of domain pool */
unsigned chroma_max_states; /* max. cardinality of domain pool for
chroma band coding */
bool_t color; /* color image */
unsigned width; /* image width */
unsigned height; /* image height */
unsigned level; /* image level */
rpf_t *rpf; /* Standard reduced precision format */
rpf_t *dc_rpf; /* DC reduced precision format */
rpf_t *d_rpf; /* Delta reduced precision format */
rpf_t *d_dc_rpf; /* Delta DC reduced precision format */
unsigned frames; /* number of frames in the video */
unsigned fps; /* number of frames per second */
unsigned p_min_level; /* min. level of prediction */
unsigned p_max_level; /* max. level of prediction */
unsigned search_range; /* motion vector interval */
bool_t half_pixel; /* usage of half pixel precision */
bool_t cross_B_search; /* usage of Cross-B-Search */
bool_t B_as_past_ref; /* usage of B frames as ref's */
unsigned smoothing; /* smoothing of image along borders */
unsigned release; /* FIASCO file format release */
} wfa_info_t;
typedef struct wfa
/*
* Used to store all informations and data structures of a WFA
*/
{
wfa_info_t *wfainfo; /* misc. information about the WFA */
frame_type_e frame_type; /* intra, predicted, bi-directional */
unsigned states; /* number of states */
unsigned basis_states; /* number of states in the basis */
unsigned root_state; /* root of the tree */
real_t *final_distribution; /* one pixel images */
byte_t *level_of_state; /* level of the image part which is
represented by the current state */
byte_t *domain_type; /* Bit_0==1: auxiliary state
Bit_1==1: used for Y compr */
mv_t (*mv_tree)[MAXLABELS]; /* motion vectors */
word_t (*tree)[MAXLABELS]; /* bintree partitioning */
u_word_t (*x)[MAXLABELS]; /* range coordinate */
u_word_t (*y)[MAXLABELS]; /* range coordinate */
word_t (*into)[MAXLABELS][MAXEDGES + 1]; /* domain references */
real_t (*weight)[MAXLABELS][MAXEDGES + 1]; /* lin.comb. coefficients */
word_t (*int_weight)[MAXLABELS][MAXEDGES + 1]; /* bin. representation */
word_t (*y_state)[MAXLABELS]; /* bintree of Y component */
byte_t (*y_column)[MAXLABELS]; /* array for Y component references */
byte_t (*prediction)[MAXLABELS]; /* DC prediction */
bool_t (*delta_state); /* delta state */
} wfa_t;
#endif /* not _WFA_H */
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