ref: 7cdf839293bf3c0b5c3f52d368635156530ddf85
dir: /jpc_dec.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__
*/
/*
* JPEG-2000 Decoder
*
* $Id$
*/
#ifndef JPC_DEC_H
#define JPC_DEC_H
/******************************************************************************\
* Includes.
\******************************************************************************/
#include "jasper/jas_stream.h"
#include "jasper/jas_image.h"
#include "jpc_tsfb.h"
#include "jpc_tagtree.h"
#include "jpc_cs.h"
#include "jpc_t1cod.h"
#include "jpc_t2cod.h"
/******************************************************************************\
* Below are some ugly warts necessary to support packed packet headers.
\******************************************************************************/
/* PPM/PPT marker segment table entry. */
typedef struct {
/* The index for this entry. */
uint_fast16_t ind;
/* The data length. */
uint_fast32_t len;
/* The data. */
jas_uchar *data;
} jpc_ppxstabent_t;
/* PPM/PPT marker segment table. */
typedef struct {
/* The number of entries. */
unsigned numents;
/* The maximum number of entries (i.e., the allocated size of the array
below). */
unsigned maxents;
/* The table entries. */
jpc_ppxstabent_t **ents;
} jpc_ppxstab_t;
/* Stream list class. */
typedef struct {
/* The number of streams in this list. */
unsigned numstreams;
/* The maximum number of streams that can be accomodated without
growing the streams array. */
unsigned maxstreams;
/* The streams. */
jas_stream_t **streams;
} jpc_streamlist_t;
/******************************************************************************\
* Coding parameters class.
\******************************************************************************/
/* Per-component coding parameters. */
typedef struct {
/* How were various coding parameters set? */
unsigned flags;
/* Per-component coding style parameters (e.g., explicit precinct sizes) */
uint_fast8_t csty;
/* The number of resolution levels. */
uint_fast8_t numrlvls;
/* The code block width exponent. */
uint_fast8_t cblkwidthexpn;
/* The code block height exponent. */
uint_fast8_t cblkheightexpn;
/* The QMFB ID. */
uint_fast8_t qmfbid;
/* The quantization style. */
uint_fast8_t qsty;
/* The number of quantizer step sizes. */
uint_fast16_t numstepsizes;
/* The step sizes. */
uint_fast16_t stepsizes[3 * JPC_MAXRLVLS + 1];
/* The number of guard bits. */
uint_fast8_t numguardbits;
/* The ROI shift value. */
uint_fast8_t roishift;
/* The code block parameters. */
uint_fast8_t cblkctx;
/* The precinct width exponents. */
uint_fast8_t prcwidthexpns[JPC_MAXRLVLS];
/* The precinct height exponents. */
uint_fast8_t prcheightexpns[JPC_MAXRLVLS];
} jpc_dec_ccp_t;
/* Coding paramters. */
typedef struct {
/* How were these coding parameters set? */
unsigned flags;
/* Progression change list. */
jpc_pchglist_t *pchglist;
/* Progression order. */
uint_fast8_t prgord;
/* The number of layers. */
uint_fast16_t numlyrs;
/* The MCT ID. */
uint_fast8_t mctid;
/* The coding style parameters (e.g., SOP, EPH). */
uint_fast8_t csty;
/* The number of components. */
unsigned numcomps;
/* The per-component coding parameters. */
jpc_dec_ccp_t *ccps;
} jpc_dec_cp_t;
/******************************************************************************\
* Decoder class.
\******************************************************************************/
/* Decoder per-segment state information. */
typedef struct jpc_dec_seg_s {
/* The next segment in the list. */
struct jpc_dec_seg_s *next;
/* The previous segment in the list. */
struct jpc_dec_seg_s *prev;
/* The starting pass number for this segment. */
unsigned passno;
/* The number of passes in this segment. */
unsigned numpasses;
/* The maximum number of passes in this segment. */
unsigned maxpasses;
/* The type of data in this segment (i.e., MQ or raw). */
enum jpc_segtype type;
/* A stream containing the data for this segment. */
jas_stream_t *stream;
/* The number of bytes destined for this segment from the packet
currently being decoded. */
unsigned cnt;
/* A flag indicating if this segment has been terminated. */
int complete;
/* The layer number to which this segment belongs. */
/* If the segment spans multiple layers, then the largest layer number
spanned by the segment is used. */
unsigned lyrno;
} jpc_dec_seg_t;
/* Decoder segment list. */
typedef struct {
/* The first entry in the list. */
jpc_dec_seg_t *head;
/* The last entry in the list. */
jpc_dec_seg_t *tail;
} jpc_dec_seglist_t;
/* Decoder per-code-block state information. */
typedef struct {
/* The number of passes. */
unsigned numpasses;
/* A list of segments that still need to be decoded. */
jpc_dec_seglist_t segs;
/* The first incomplete/partial segment. */
jpc_dec_seg_t *curseg;
/* The number of leading insignificant bit planes for this code block. */
unsigned numimsbs;
/* The number of bits used to encode pass data lengths. */
unsigned numlenbits;
/* The first pass number containing data for this code block. */
unsigned firstpassno;
/* The sample data associated with this code block. */
jas_matrix_t *data;
} jpc_dec_cblk_t;
/* Decoder per-code-block-group state information. */
typedef struct {
/* The x-coordinate of the top-left corner of the precinct. */
uint_fast32_t xstart;
/* The y-coordinate of the top-left corner of the precinct. */
uint_fast32_t ystart;
/* The x-coordinate of the bottom-right corner of the precinct
(plus one). */
uint_fast32_t xend;
/* The y-coordinate of the bottom-right corner of the precinct
(plus one). */
uint_fast32_t yend;
/* The number of code blocks spanning this precinct in the horizontal
direction. */
unsigned numhcblks;
/* The number of code blocks spanning this precinct in the vertical
direction. */
unsigned numvcblks;
/* The total number of code blocks in this precinct. */
unsigned numcblks;
/* The per code block information. */
jpc_dec_cblk_t *cblks;
/* The inclusion tag tree. */
jpc_tagtree_t *incltagtree;
/* The insignificant MSBs tag tree. */
jpc_tagtree_t *numimsbstagtree;
} jpc_dec_prc_t;
/* Decoder per-band state information. */
typedef struct {
/* The per-code-block-group state information. */
jpc_dec_prc_t *prcs;
/* The sample data associated with this band. */
jas_matrix_t *data;
/* The orientation of this band (i.e., LL, LH, HL, or HH). */
enum jpc_tsfb_orient orient;
/* The encoded quantizer step size. */
unsigned stepsize;
/* The absolute quantizer step size. */
jpc_fix_t absstepsize;
/* The number of bit planes for this band. */
unsigned numbps;
/* The analysis gain associated with this band. */
int analgain;
/* The ROI shift value for this band. */
int roishift;
} jpc_dec_band_t;
/* Decoder per-resolution-level state information. */
typedef struct {
/* The number of bands associated with this resolution level. */
unsigned numbands;
/* The per-band information. */
jpc_dec_band_t *bands;
/* The x-coordinate of the top-left corner of the tile-component
at this resolution. */
uint_fast32_t xstart;
/* The y-coordinate of the top-left corner of the tile-component
at this resolution. */
uint_fast32_t ystart;
/* The x-coordinate of the bottom-right corner of the tile-component
at this resolution (plus one). */
uint_fast32_t xend;
/* The y-coordinate of the bottom-right corner of the tile-component
at this resolution (plus one). */
uint_fast32_t yend;
/* The exponent value for the nominal precinct width measured
relative to the associated LL band. */
unsigned prcwidthexpn;
/* The exponent value for the nominal precinct height measured
relative to the associated LL band. */
unsigned prcheightexpn;
/* The number of precincts in the horizontal direction. */
unsigned numhprcs;
/* The number of precincts in the vertical direction. */
unsigned numvprcs;
/* The total number of precincts. */
unsigned numprcs;
/* The exponent value for the nominal code block group width.
This quantity is associated with the next lower resolution level
(assuming that there is one). */
unsigned cbgwidthexpn;
/* The exponent value for the nominal code block group height
This quantity is associated with the next lower resolution level
(assuming that there is one). */
unsigned cbgheightexpn;
/* The exponent value for the code block width. */
uint_fast16_t cblkwidthexpn;
/* The exponent value for the code block height. */
uint_fast16_t cblkheightexpn;
} jpc_dec_rlvl_t;
/* Decoder per-tile-component state information. */
typedef struct {
/* The x-coordinate of the top-left corner of the tile-component
in the coordinate system of the tile-component. */
uint_fast32_t xstart;
/* The y-coordinate of the top-left corner of the tile-component
in the coordinate system of the tile-component. */
uint_fast32_t ystart;
/* The x-coordinate of the bottom-right corner of the tile-component
in the coordinate system of the tile-component (plus one). */
uint_fast32_t xend;
/* The y-coordinate of the bottom-right corner of the tile-component
in the coordinate system of the tile-component (plus one). */
uint_fast32_t yend;
/* The component data for the current tile. */
jas_matrix_t *data;
/* The number of resolution levels. */
unsigned numrlvls;
/* The per resolution level information. */
jpc_dec_rlvl_t *rlvls;
/* The TSFB. */
jpc_tsfb_t *tsfb;
} jpc_dec_tcomp_t;
/*
* Tile states.
*/
#define JPC_TILE_INIT 0
#define JPC_TILE_ACTIVE 1
#define JPC_TILE_ACTIVELAST 2
#define JPC_TILE_DONE 3
/* Decoder per-tile state information. */
typedef struct {
/* The processing state for this tile. */
int state;
/* 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 packed packet header data for this tile. */
jpc_ppxstab_t *pptstab;
/* A stream containing the packed packet header data for this tile. */
jas_stream_t *pkthdrstream;
/* The coding parameters for this tile. */
jpc_dec_cp_t *cp;
/* The per tile-component information. */
jpc_dec_tcomp_t *tcomps;
/* The next expected tile-part number. */
unsigned partno;
/* The number of tile-parts. */
unsigned numparts;
/* The coding mode. */
int realmode;
/* The packet iterator for this tile. */
jpc_pi_t *pi;
} jpc_dec_tile_t;
/* Decoder per-component state information. */
typedef struct {
/* The horizontal sampling period. */
uint_fast32_t hstep;
/* The vertical sampling period. */
uint_fast32_t vstep;
/* The number of samples in the horizontal direction. */
uint_fast32_t width;
/* The number of samples in the vertical direction. */
uint_fast32_t height;
/* The precision of the sample data. */
uint_fast16_t prec;
/* The signedness of the sample data. */
bool sgnd;
/* The sample alignment horizontal offset. */
uint_fast32_t hsubstep;
/* The sample alignment vertical offset. */
uint_fast32_t vsubstep;
} jpc_dec_cmpt_t;
/* Decoder state information. */
typedef struct {
/* The decoded image. */
jas_image_t *image;
/* The x-coordinate of the top-left corner of the image area on
the reference grid. */
uint_fast32_t xstart;
/* The y-coordinate of the top-left corner of the image area on
the reference grid. */
uint_fast32_t ystart;
/* The x-coordinate of the bottom-right corner of the image area on
the reference grid (plus one). */
uint_fast32_t xend;
/* The y-coordinate of the bottom-right corner of the image area on
the reference grid (plus one). */
uint_fast32_t yend;
/* The nominal tile width in units of the image reference grid. */
uint_fast32_t tilewidth;
/* The nominal tile height in units of the image reference grid. */
uint_fast32_t tileheight;
/* The horizontal offset from the origin of the reference grid to the
left side of the first tile. */
uint_fast32_t tilexoff;
/* The vertical offset from the origin of the reference grid to the
top side of the first tile. */
uint_fast32_t tileyoff;
/* The number of tiles spanning the image area in the vertical
direction. */
unsigned numhtiles;
/* The number of tiles spanning the image area in the horizontal
direction. */
unsigned numvtiles;
/* The total number of tiles. */
unsigned numtiles;
/* The per-tile information. */
jpc_dec_tile_t *tiles;
/* The tile currently being processed. */
jpc_dec_tile_t *curtile;
/* The number of components. */
unsigned numcomps;
/* The stream containing the input JPEG-2000 code stream data. */
jas_stream_t *in;
/* The default coding parameters for all tiles. */
jpc_dec_cp_t *cp;
/* The maximum number of layers that may be decoded. */
unsigned maxlyrs;
/* The maximum number of packets that may be decoded. */
int maxpkts;
/* The number of packets decoded so far in the processing of the entire
code stream. */
unsigned numpkts;
/* The next expected PPM marker segment sequence number. */
unsigned ppmseqno;
/* The current state for code stream processing. */
int state;
/* The per-component information. */
jpc_dec_cmpt_t *cmpts;
/* The information from PPM marker segments. */
jpc_ppxstab_t *ppmstab;
/* A list of streams containing packet header data from PPM marker
segments. */
jpc_streamlist_t *pkthdrstreams;
/* The expected ending offset for a tile-part. */
long curtileendoff;
/* This is required by the tier-2 decoder. */
jpc_cstate_t *cstate;
size_t max_samples;
} jpc_dec_t;
/* Decoder options. */
typedef struct {
/* The debug level for the decoder. */
int debug;
/* The maximum number of layers to decode. */
unsigned maxlyrs;
/* The maximum number of packets to decode. */
int maxpkts;
size_t max_samples;
} jpc_dec_importopts_t;
/******************************************************************************\
* Functions.
\******************************************************************************/
/* Create a decoder segment object. */
jpc_dec_seg_t *jpc_seg_alloc(void);
/* Destroy a decoder segment object. */
void jpc_seg_destroy(jpc_dec_seg_t *seg);
/* Remove a segment from a segment list. */
void jpc_seglist_remove(jpc_dec_seglist_t *list, jpc_dec_seg_t *node);
/* Insert a segment into a segment list. */
void jpc_seglist_insert(jpc_dec_seglist_t *list, jpc_dec_seg_t *ins,
jpc_dec_seg_t *node);
#endif