/* * 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 "jpc_tsfb.h" #include "jpc_bs.h" #include "jpc_tagtree.h" #include "jpc_cs.h" #include "jpc_cod.h" #include "jpc_mqdec.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. */ uchar *data; } jpc_ppxstabent_t; /* PPM/PPT marker segment table. */ typedef struct { /* The number of entries. */ int numents; /* The maximum number of entries (i.e., the allocated size of the array below). */ int maxents; /* The table entries. */ jpc_ppxstabent_t **ents; } jpc_ppxstab_t; /* Stream list class. */ typedef struct { /* The number of streams in this list. */ int numstreams; /* The maximum number of streams that can be accomodated without growing the streams array. */ int 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? */ int 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? */ int 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. */ int 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. */ int passno; /* The number of passes in this segment. */ int numpasses; /* The maximum number of passes in this segment. */ int maxpasses; /* The type of data in this segment (i.e., MQ or raw). */ int 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. */ int 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. */ int 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. */ int 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. */ int numimsbs; /* The number of bits used to encode pass data lengths. */ int numlenbits; /* The first pass number containing data for this code block. */ int firstpassno; /* The MQ decoder. */ jpc_mqdec_t *mqdec; /* The raw bit stream decoder. */ jpc_bitstream_t *nulldec; /* The per-sample state information for this code block. */ jas_matrix_t *flags; /* 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. */ int numhcblks; /* The number of code blocks spanning this precinct in the vertical direction. */ int numvcblks; /* The total number of code blocks in this precinct. */ int 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). */ int orient; /* The encoded quantizer step size. */ int stepsize; /* The absolute quantizer step size. */ jpc_fix_t absstepsize; /* The number of bit planes for this band. */ int 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. */ int 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. */ int prcwidthexpn; /* The exponent value for the nominal precinct height measured relative to the associated LL band. */ int prcheightexpn; /* The number of precincts in the horizontal direction. */ int numhprcs; /* The number of precincts in the vertical direction. */ int numvprcs; /* The total number of precincts. */ int 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). */ int 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). */ int 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. */ int 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 current position within the packed packet header stream. */ long pkthdrstreampos; /* 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. */ int partno; /* The number of tile-parts. */ int 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. */ int numhtiles; /* The number of tiles spanning the image area in the horizontal direction. */ int numvtiles; /* The total number of tiles. */ int numtiles; /* The per-tile information. */ jpc_dec_tile_t *tiles; /* The tile currently being processed. */ jpc_dec_tile_t *curtile; /* The number of components. */ int 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. */ int 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. */ int numpkts; /* The next expected PPM marker segment sequence number. */ int 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; } jpc_dec_t; /* Decoder options. */ typedef struct { /* The debug level for the decoder. */ int debug; /* The maximum number of layers to decode. */ int maxlyrs; /* The maximum number of packets to decode. */ int maxpkts; } 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