ref: 5323bf5d517d433e45291c1e78292e9cf3e1ac10
dir: /jpc_t2cod.h/
/*
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2002 Michael David Adams.
* All rights reserved.
*/
/* __START_OF_JASPER_LICENSE__
*
* JasPer License Version 2.0
*
* Copyright (c) 2001-2006 Michael David Adams
* Copyright (c) 1999-2000 Image Power, Inc.
* Copyright (c) 1999-2000 The University of British Columbia
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person (the
* "User") obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* 1. The above copyright notices and this permission notice (which
* includes the disclaimer below) shall be included in all copies or
* substantial portions of the Software.
*
* 2. The name of a copyright holder shall not be used to endorse or
* promote products derived from the Software without specific prior
* written permission.
*
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
*
* __END_OF_JASPER_LICENSE__
*/
/*
* Tier-2 Coding Library
*
* $Id$
*/
#ifndef JPC_T2COD_H
#define JPC_T2COD_H
/******************************************************************************\
* Includes.
\******************************************************************************/
#include "jpc_cs.h"
/******************************************************************************\
* Types.
\******************************************************************************/
/* Progression change list. */
typedef struct {
/* The number of progression changes. */
unsigned numpchgs;
/* The maximum number of progression changes that can be accomodated
without growing the progression change array. */
unsigned maxpchgs;
/* The progression changes. */
jpc_pchg_t **pchgs;
} jpc_pchglist_t;
/* Packet iterator per-resolution-level information. */
typedef struct {
/* The number of precincts. */
unsigned numprcs;
/* The last layer processed for each precinct. */
unsigned *prclyrnos;
/* The precinct width exponent. */
unsigned prcwidthexpn;
/* The precinct height exponent. */
unsigned prcheightexpn;
/* The number of precincts spanning the resolution level in the horizontal
direction. */
unsigned numhprcs;
} jpc_pirlvl_t;
/* Packet iterator per-component information. */
typedef struct {
/* The number of resolution levels. */
unsigned numrlvls;
/* The per-resolution-level information. */
jpc_pirlvl_t *pirlvls;
/* The horizontal sampling period. */
uint_fast32_t hsamp;
/* The vertical sampling period. */
uint_fast32_t vsamp;
} jpc_picomp_t;
/* Packet iterator class. */
typedef struct {
/* The number of layers. */
unsigned numlyrs;
/* The number of resolution levels. */
unsigned maxrlvls;
/* The number of components. */
unsigned numcomps;
/* The per-component information. */
jpc_picomp_t *picomps;
/* The current component. */
jpc_picomp_t *picomp;
/* The current resolution level. */
jpc_pirlvl_t *pirlvl;
/* The number of the current component. */
unsigned compno;
/* The number of the current resolution level. */
unsigned rlvlno;
/* The number of the current precinct. */
unsigned prcno;
/* The number of the current layer. */
unsigned lyrno;
/* The x-coordinate of the current position. */
uint_fast32_t x;
/* The y-coordinate of the current position. */
uint_fast32_t y;
/* The horizontal step size. */
uint_fast32_t xstep;
/* The vertical step size. */
uint_fast32_t ystep;
/* The x-coordinate of the top-left corner of the tile on the reference
grid. */
uint_fast32_t xstart;
/* The y-coordinate of the top-left corner of the tile on the reference
grid. */
uint_fast32_t ystart;
/* The x-coordinate of the bottom-right corner of the tile on the
reference grid (plus one). */
uint_fast32_t xend;
/* The y-coordinate of the bottom-right corner of the tile on the
reference grid (plus one). */
uint_fast32_t yend;
/* The current progression change. */
const jpc_pchg_t *pchg;
/* The progression change list. */
jpc_pchglist_t *pchglist;
/* The progression to use in the absense of explicit specification. */
jpc_pchg_t defaultpchg;
/* The current progression change number. */
int pchgno;
/* Is this the first time in the current progression volume? */
bool prgvolfirst;
/* Is the current iterator value valid? */
bool valid;
/* The current packet number. */
int pktno;
} jpc_pi_t;
/******************************************************************************\
* Functions/macros for packet iterators.
\******************************************************************************/
/* Create a packet iterator. */
jpc_pi_t *jpc_pi_create0(void);
/* Destroy a packet iterator. */
void jpc_pi_destroy(jpc_pi_t *pi);
/* Add a progression change to a packet iterator. */
int jpc_pi_addpchg(jpc_pi_t *pi, jpc_pocpchg_t *pchg);
/* Prepare a packet iterator for iteration. */
int jpc_pi_init(jpc_pi_t *pi);
/* Set the iterator to the first packet. */
int jpc_pi_begin(jpc_pi_t *pi);
/* Proceed to the next packet in sequence. */
int jpc_pi_next(jpc_pi_t *pi);
/* Get the index of the current packet. */
#define jpc_pi_getind(pi) ((pi)->pktno)
/* Get the component number of the current packet. */
#define jpc_pi_cmptno(pi) ((pi)->compno)
/* Get the resolution level of the current packet. */
#define jpc_pi_rlvlno(pi) ((pi)->rlvlno)
/* Get the layer number of the current packet. */
#define jpc_pi_lyrno(pi) ((pi)->lyrno)
/* Get the precinct number of the current packet. */
#define jpc_pi_prcno(pi) ((pi)->prcno)
/* Get the progression order for the current packet. */
#define jpc_pi_prg(pi) ((pi)->pchg->prgord)
/******************************************************************************\
* Functions/macros for progression change lists.
\******************************************************************************/
/* Create a progression change list. */
jpc_pchglist_t *jpc_pchglist_create(void);
/* Destroy a progression change list. */
void jpc_pchglist_destroy(jpc_pchglist_t *pchglist);
/* Insert a new element into a progression change list. */
int jpc_pchglist_insert(jpc_pchglist_t *pchglist, int pchgno, jpc_pchg_t *pchg);
/* Remove an element from a progression change list. */
jpc_pchg_t *jpc_pchglist_remove(jpc_pchglist_t *pchglist, unsigned pchgno);
/* Get an element from a progression change list. */
JAS_ATTRIBUTE_PURE
const jpc_pchg_t *jpc_pchglist_get(const jpc_pchglist_t *pchglist, unsigned pchgno);
/* Copy a progression change list. */
jpc_pchglist_t *jpc_pchglist_copy(const jpc_pchglist_t *pchglist);
/* Get the number of elements in a progression change list. */
JAS_ATTRIBUTE_PURE
unsigned jpc_pchglist_numpchgs(const jpc_pchglist_t *pchglist);
/******************************************************************************\
* Functions/macros for progression changes.
\******************************************************************************/
/* Destroy a progression change. */
void jpc_pchg_destroy(jpc_pchg_t *pchg);
/* Copy a progression change. */
jpc_pchg_t *jpc_pchg_copy(const jpc_pchg_t *pchg);
#endif