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jpc_t2cod.h (9124B)


      1 /*
      2  * Copyright (c) 1999-2000 Image Power, Inc. and the University of
      3  *   British Columbia.
      4  * Copyright (c) 2001-2002 Michael David Adams.
      5  * All rights reserved.
      6  */
      7 
      8 /* __START_OF_JASPER_LICENSE__
      9  * 
     10  * JasPer License Version 2.0
     11  * 
     12  * Copyright (c) 1999-2000 Image Power, Inc.
     13  * Copyright (c) 1999-2000 The University of British Columbia
     14  * Copyright (c) 2001-2003 Michael David Adams
     15  * 
     16  * All rights reserved.
     17  * 
     18  * Permission is hereby granted, free of charge, to any person (the
     19  * "User") obtaining a copy of this software and associated documentation
     20  * files (the "Software"), to deal in the Software without restriction,
     21  * including without limitation the rights to use, copy, modify, merge,
     22  * publish, distribute, and/or sell copies of the Software, and to permit
     23  * persons to whom the Software is furnished to do so, subject to the
     24  * following conditions:
     25  * 
     26  * 1.  The above copyright notices and this permission notice (which
     27  * includes the disclaimer below) shall be included in all copies or
     28  * substantial portions of the Software.
     29  * 
     30  * 2.  The name of a copyright holder shall not be used to endorse or
     31  * promote products derived from the Software without specific prior
     32  * written permission.
     33  * 
     34  * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
     35  * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
     36  * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
     37  * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
     38  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
     39  * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
     40  * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
     41  * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
     42  * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
     43  * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
     44  * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
     45  * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
     46  * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
     47  * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
     48  * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
     49  * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
     50  * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
     51  * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
     52  * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
     53  * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
     54  * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
     55  * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
     56  * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
     57  * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
     58  * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
     59  * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
     60  * 
     61  * __END_OF_JASPER_LICENSE__
     62  */
     63 
     64 /*
     65  * Tier-2 Coding Library
     66  *
     67  * $Id: jpc_t2cod.h 1918 2005-07-24 14:12:08Z baford $
     68  */
     69 
     70 #ifndef JPC_T2COD_H
     71 #define	JPC_T2COD_H
     72 
     73 /******************************************************************************\
     74 * Includes.
     75 \******************************************************************************/
     76 
     77 #include "jpc_cs.h"
     78 
     79 /******************************************************************************\
     80 * Types.
     81 \******************************************************************************/
     82 
     83 /* Progression change list. */
     84 
     85 typedef struct {
     86 
     87 	/* The number of progression changes. */
     88 	int numpchgs;
     89 
     90 	/* The maximum number of progression changes that can be accomodated
     91 	  without growing the progression change array. */
     92 	int maxpchgs;
     93 
     94 	/* The progression changes. */
     95 	jpc_pchg_t **pchgs;
     96 
     97 } jpc_pchglist_t;
     98 
     99 /* Packet iterator per-resolution-level information. */
    100 
    101 typedef struct {
    102 
    103 	/* The number of precincts. */
    104 	int numprcs;
    105 
    106 	/* The last layer processed for each precinct. */
    107 	int *prclyrnos;
    108 
    109 	/* The precinct width exponent. */
    110 	int prcwidthexpn;
    111 
    112 	/* The precinct height exponent. */
    113 	int prcheightexpn;
    114 
    115 	/* The number of precincts spanning the resolution level in the horizontal
    116 	  direction. */
    117 	int numhprcs;
    118 
    119 } jpc_pirlvl_t;
    120 
    121 /* Packet iterator per-component information. */
    122 
    123 typedef struct {
    124 
    125 	/* The number of resolution levels. */
    126 	int numrlvls;
    127 
    128 	/* The per-resolution-level information. */
    129 	jpc_pirlvl_t *pirlvls;
    130 
    131 	/* The horizontal sampling period. */
    132 	int hsamp;
    133 
    134 	/* The vertical sampling period. */
    135 	int vsamp;
    136 
    137 } jpc_picomp_t;
    138 
    139 /* Packet iterator class. */
    140 
    141 typedef struct {
    142 
    143 	/* The number of layers. */
    144 	int numlyrs;
    145 
    146 	/* The number of resolution levels. */
    147 	int maxrlvls;
    148 
    149 	/* The number of components. */
    150 	int numcomps;
    151 
    152 	/* The per-component information. */
    153 	jpc_picomp_t *picomps;
    154 
    155 	/* The current component. */
    156 	jpc_picomp_t *picomp;
    157 
    158 	/* The current resolution level. */
    159 	jpc_pirlvl_t *pirlvl;
    160 
    161 	/* The number of the current component. */
    162 	int compno;
    163 
    164 	/* The number of the current resolution level. */
    165 	int rlvlno;
    166 
    167 	/* The number of the current precinct. */
    168 	int prcno;
    169 
    170 	/* The number of the current layer. */
    171 	int lyrno;
    172 
    173 	/* The x-coordinate of the current position. */
    174 	int x;
    175 
    176 	/* The y-coordinate of the current position. */
    177 	int y;
    178 
    179 	/* The horizontal step size. */
    180 	int xstep;
    181 
    182 	/* The vertical step size. */
    183 	int ystep;
    184 
    185 	/* The x-coordinate of the top-left corner of the tile on the reference
    186 	  grid. */
    187 	int xstart;
    188 
    189 	/* The y-coordinate of the top-left corner of the tile on the reference
    190 	  grid. */
    191 	int ystart;
    192 
    193 	/* The x-coordinate of the bottom-right corner of the tile on the
    194 	  reference grid (plus one). */
    195 	int xend;
    196 
    197 	/* The y-coordinate of the bottom-right corner of the tile on the
    198 	  reference grid (plus one). */
    199 	int yend;
    200 
    201 	/* The current progression change. */
    202 	jpc_pchg_t *pchg;
    203 
    204 	/* The progression change list. */
    205 	jpc_pchglist_t *pchglist;
    206 
    207 	/* The progression to use in the absense of explicit specification. */
    208 	jpc_pchg_t defaultpchg;
    209 
    210 	/* The current progression change number. */
    211 	int pchgno;
    212 
    213 	/* Is this the first time in the current progression volume? */
    214 	bool prgvolfirst;
    215 
    216 	/* Is the current iterator value valid? */
    217 	bool valid;
    218 
    219 	/* The current packet number. */
    220 	int pktno;
    221 
    222 } jpc_pi_t;
    223 
    224 /******************************************************************************\
    225 * Functions/macros for packet iterators.
    226 \******************************************************************************/
    227 
    228 /* Create a packet iterator. */
    229 jpc_pi_t *jpc_pi_create0(void);
    230 
    231 /* Destroy a packet iterator. */
    232 void jpc_pi_destroy(jpc_pi_t *pi);
    233 
    234 /* Add a progression change to a packet iterator. */
    235 int jpc_pi_addpchg(jpc_pi_t *pi, jpc_pocpchg_t *pchg);
    236 
    237 /* Prepare a packet iterator for iteration. */
    238 int jpc_pi_init(jpc_pi_t *pi);
    239 
    240 /* Set the iterator to the first packet. */
    241 int jpc_pi_begin(jpc_pi_t *pi);
    242 
    243 /* Proceed to the next packet in sequence. */
    244 int jpc_pi_next(jpc_pi_t *pi);
    245 
    246 /* Get the index of the current packet. */
    247 #define	jpc_pi_getind(pi)	((pi)->pktno)
    248 
    249 /* Get the component number of the current packet. */
    250 #define jpc_pi_cmptno(pi)	(assert(pi->valid), (pi)->compno)
    251 
    252 /* Get the resolution level of the current packet. */
    253 #define jpc_pi_rlvlno(pi)	(assert(pi->valid), (pi)->rlvlno)
    254 
    255 /* Get the layer number of the current packet. */
    256 #define jpc_pi_lyrno(pi)	(assert(pi->valid), (pi)->lyrno)
    257 
    258 /* Get the precinct number of the current packet. */
    259 #define jpc_pi_prcno(pi)	(assert(pi->valid), (pi)->prcno)
    260 
    261 /* Get the progression order for the current packet. */
    262 #define jpc_pi_prg(pi)	(assert(pi->valid), (pi)->pchg->prgord)
    263 
    264 /******************************************************************************\
    265 * Functions/macros for progression change lists.
    266 \******************************************************************************/
    267 
    268 /* Create a progression change list. */
    269 jpc_pchglist_t *jpc_pchglist_create(void);
    270 
    271 /* Destroy a progression change list. */
    272 void jpc_pchglist_destroy(jpc_pchglist_t *pchglist);
    273 
    274 /* Insert a new element into a progression change list. */
    275 int jpc_pchglist_insert(jpc_pchglist_t *pchglist, int pchgno, jpc_pchg_t *pchg);
    276 
    277 /* Remove an element from a progression change list. */
    278 jpc_pchg_t *jpc_pchglist_remove(jpc_pchglist_t *pchglist, int pchgno);
    279 
    280 /* Get an element from a progression change list. */
    281 jpc_pchg_t *jpc_pchglist_get(jpc_pchglist_t *pchglist, int pchgno);
    282 
    283 /* Copy a progression change list. */
    284 jpc_pchglist_t *jpc_pchglist_copy(jpc_pchglist_t *pchglist);
    285 
    286 /* Get the number of elements in a progression change list. */
    287 int jpc_pchglist_numpchgs(jpc_pchglist_t *pchglist);
    288 
    289 /******************************************************************************\
    290 * Functions/macros for progression changes.
    291 \******************************************************************************/
    292 
    293 /* Destroy a progression change. */
    294 void jpc_pchg_destroy(jpc_pchg_t *pchg);
    295 
    296 /* Copy a progression change. */
    297 jpc_pchg_t *jpc_pchg_copy(jpc_pchg_t *pchg);
    298 
    299 #endif