--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/openjpeg/src/lib/openjp2/j2k.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,954 @@
+/*
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
+ * party and contributor rights, including patent rights, and no such rights
+ * are granted under this license.
+ *
+ * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2014, Professor Benoit Macq
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux
+ * Copyright (c) 2003-2014, Antonin Descampe
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * Copyright (c) 2006-2007, Parvatha Elangovan
+ * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
+ * Copyright (c) 2011-2012, Centre National d'Etudes Spatiales (CNES), France
+ * Copyright (c) 2012, CS Systemes d'Information, France
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef OPJ_J2K_H
+#define OPJ_J2K_H
+/**
+@file j2k.h
+@brief The JPEG-2000 Codestream Reader/Writer (J2K)
+
+The functions in J2K.C have for goal to read/write the several parts of the codestream: markers and data.
+*/
+
+/** @defgroup J2K J2K - JPEG-2000 codestream reader/writer */
+/*@{*/
+
+#define J2K_CP_CSTY_PRT 0x01
+#define J2K_CP_CSTY_SOP 0x02
+#define J2K_CP_CSTY_EPH 0x04
+#define J2K_CCP_CSTY_PRT 0x01
+#define J2K_CCP_CBLKSTY_LAZY 0x01     /**< Selective arithmetic coding bypass */
+#define J2K_CCP_CBLKSTY_RESET 0x02    /**< Reset context probabilities on coding pass boundaries */
+#define J2K_CCP_CBLKSTY_TERMALL 0x04  /**< Termination on each coding pass */
+#define J2K_CCP_CBLKSTY_VSC 0x08      /**< Vertically stripe causal context */
+#define J2K_CCP_CBLKSTY_PTERM 0x10    /**< Predictable termination */
+#define J2K_CCP_CBLKSTY_SEGSYM 0x20   /**< Segmentation symbols are used */
+#define J2K_CCP_CBLKSTY_HT 0x40       /**< (high throughput) HT codeblocks */
+#define J2K_CCP_CBLKSTY_HTMIXED 0x80  /**< MIXED mode HT codeblocks */
+#define J2K_CCP_QNTSTY_NOQNT 0
+#define J2K_CCP_QNTSTY_SIQNT 1
+#define J2K_CCP_QNTSTY_SEQNT 2
+
+/* ----------------------------------------------------------------------- */
+
+#define J2K_MS_SOC 0xff4f   /**< SOC marker value */
+#define J2K_MS_SOT 0xff90   /**< SOT marker value */
+#define J2K_MS_SOD 0xff93   /**< SOD marker value */
+#define J2K_MS_EOC 0xffd9   /**< EOC marker value */
+#define J2K_MS_CAP 0xff50   /**< CAP marker value */
+#define J2K_MS_SIZ 0xff51   /**< SIZ marker value */
+#define J2K_MS_COD 0xff52   /**< COD marker value */
+#define J2K_MS_COC 0xff53   /**< COC marker value */
+#define J2K_MS_CPF 0xff59   /**< CPF marker value */
+#define J2K_MS_RGN 0xff5e   /**< RGN marker value */
+#define J2K_MS_QCD 0xff5c   /**< QCD marker value */
+#define J2K_MS_QCC 0xff5d   /**< QCC marker value */
+#define J2K_MS_POC 0xff5f   /**< POC marker value */
+#define J2K_MS_TLM 0xff55   /**< TLM marker value */
+#define J2K_MS_PLM 0xff57   /**< PLM marker value */
+#define J2K_MS_PLT 0xff58   /**< PLT marker value */
+#define J2K_MS_PPM 0xff60   /**< PPM marker value */
+#define J2K_MS_PPT 0xff61   /**< PPT marker value */
+#define J2K_MS_SOP 0xff91   /**< SOP marker value */
+#define J2K_MS_EPH 0xff92   /**< EPH marker value */
+#define J2K_MS_CRG 0xff63   /**< CRG marker value */
+#define J2K_MS_COM 0xff64   /**< COM marker value */
+#define J2K_MS_CBD 0xff78   /**< CBD marker value */
+#define J2K_MS_MCC 0xff75   /**< MCC marker value */
+#define J2K_MS_MCT 0xff74   /**< MCT marker value */
+#define J2K_MS_MCO 0xff77   /**< MCO marker value */
+
+#define J2K_MS_UNK 0        /**< UNKNOWN marker value */
+
+/* UniPG>> */
+#ifdef USE_JPWL
+#define J2K_MS_EPC 0xff68   /**< EPC marker value (Part 11: JPEG 2000 for Wireless) */
+#define J2K_MS_EPB 0xff66   /**< EPB marker value (Part 11: JPEG 2000 for Wireless) */
+#define J2K_MS_ESD 0xff67   /**< ESD marker value (Part 11: JPEG 2000 for Wireless) */
+#define J2K_MS_RED 0xff69   /**< RED marker value (Part 11: JPEG 2000 for Wireless) */
+#endif /* USE_JPWL */
+#ifdef USE_JPSEC
+#define J2K_MS_SEC 0xff65    /**< SEC marker value (Part 8: Secure JPEG 2000) */
+#define J2K_MS_INSEC 0xff94  /**< INSEC marker value (Part 8: Secure JPEG 2000) */
+#endif /* USE_JPSEC */
+/* <<UniPG */
+
+#define J2K_MAX_POCS    32      /**< Maximum number of POCs */
+
+#define J2K_TCD_MATRIX_MAX_LAYER_COUNT 10
+#define J2K_TCD_MATRIX_MAX_RESOLUTION_COUNT 10
+
+/* ----------------------------------------------------------------------- */
+
+/**
+ * Values that specify the status of the decoding process when decoding the main header.
+ * These values may be combined with a | operator.
+ * */
+typedef enum J2K_STATUS {
+    J2K_STATE_NONE  =  0x0000, /**< a SOC marker is expected */
+    J2K_STATE_MHSOC  = 0x0001, /**< a SOC marker is expected */
+    J2K_STATE_MHSIZ  = 0x0002, /**< a SIZ marker is expected */
+    J2K_STATE_MH     = 0x0004, /**< the decoding process is in the main header */
+    J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
+    J2K_STATE_TPH    = 0x0010, /**< the decoding process is in a tile part header */
+    J2K_STATE_MT     = 0x0020, /**< the EOC marker has just been read */
+    J2K_STATE_NEOC   = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
+    J2K_STATE_DATA   = 0x0080, /**< a tile header has been successfully read and codestream is expected */
+
+    J2K_STATE_EOC    = 0x0100, /**< the decoding process has encountered the EOC marker */
+    J2K_STATE_ERR    = 0x8000  /**< the decoding process has encountered an error (FIXME warning V1 = 0x0080)*/
+} J2K_STATUS;
+
+/**
+ * Type of elements storing in the MCT data
+ */
+typedef enum MCT_ELEMENT_TYPE {
+    MCT_TYPE_INT16 = 0,     /** MCT data is stored as signed shorts*/
+    MCT_TYPE_INT32 = 1,     /** MCT data is stored as signed integers*/
+    MCT_TYPE_FLOAT = 2,     /** MCT data is stored as floats*/
+    MCT_TYPE_DOUBLE = 3     /** MCT data is stored as doubles*/
+} J2K_MCT_ELEMENT_TYPE;
+
+/**
+ * Type of MCT array
+ */
+typedef enum MCT_ARRAY_TYPE {
+    MCT_TYPE_DEPENDENCY = 0,
+    MCT_TYPE_DECORRELATION = 1,
+    MCT_TYPE_OFFSET = 2
+} J2K_MCT_ARRAY_TYPE;
+
+/* ----------------------------------------------------------------------- */
+
+/**
+T2 encoding mode
+*/
+typedef enum T2_MODE {
+    THRESH_CALC = 0,    /** Function called in Rate allocation process*/
+    FINAL_PASS = 1      /** Function called in Tier 2 process*/
+} J2K_T2_MODE;
+
+/**
+ * Quantization stepsize
+ */
+typedef struct opj_stepsize {
+    /** exponent */
+    OPJ_INT32 expn;
+    /** mantissa */
+    OPJ_INT32 mant;
+} opj_stepsize_t;
+
+/**
+Tile-component coding parameters
+*/
+typedef struct opj_tccp {
+    /** coding style */
+    OPJ_UINT32 csty;
+    /** number of resolutions */
+    OPJ_UINT32 numresolutions;
+    /** code-blocks width */
+    OPJ_UINT32 cblkw;
+    /** code-blocks height */
+    OPJ_UINT32 cblkh;
+    /** code-block coding style */
+    OPJ_UINT32 cblksty;
+    /** discrete wavelet transform identifier */
+    OPJ_UINT32 qmfbid;
+    /** quantisation style */
+    OPJ_UINT32 qntsty;
+    /** stepsizes used for quantization */
+    opj_stepsize_t stepsizes[OPJ_J2K_MAXBANDS];
+    /** number of guard bits */
+    OPJ_UINT32 numgbits;
+    /** Region Of Interest shift */
+    OPJ_INT32 roishift;
+    /** precinct width */
+    OPJ_UINT32 prcw[OPJ_J2K_MAXRLVLS];
+    /** precinct height */
+    OPJ_UINT32 prch[OPJ_J2K_MAXRLVLS];
+    /** the dc_level_shift **/
+    OPJ_INT32 m_dc_level_shift;
+}
+opj_tccp_t;
+
+
+
+/**
+ * FIXME DOC
+ */
+typedef struct opj_mct_data {
+    J2K_MCT_ELEMENT_TYPE m_element_type;
+    J2K_MCT_ARRAY_TYPE   m_array_type;
+    OPJ_UINT32           m_index;
+    OPJ_BYTE *           m_data;
+    OPJ_UINT32           m_data_size;
+}
+opj_mct_data_t;
+
+/**
+ * FIXME DOC
+ */
+typedef struct opj_simple_mcc_decorrelation_data {
+    OPJ_UINT32           m_index;
+    OPJ_UINT32           m_nb_comps;
+    opj_mct_data_t *     m_decorrelation_array;
+    opj_mct_data_t *     m_offset_array;
+    OPJ_BITFIELD         m_is_irreversible : 1;
+}
+opj_simple_mcc_decorrelation_data_t;
+
+typedef struct opj_ppx_struct {
+    OPJ_BYTE*   m_data; /* m_data == NULL => Zppx not read yet */
+    OPJ_UINT32  m_data_size;
+} opj_ppx;
+
+/**
+Tile coding parameters :
+this structure is used to store coding/decoding parameters common to all
+tiles (information like COD, COC in main header)
+*/
+typedef struct opj_tcp {
+    /** coding style */
+    OPJ_UINT32 csty;
+    /** progression order */
+    OPJ_PROG_ORDER prg;
+    /** number of layers */
+    OPJ_UINT32 numlayers;
+    OPJ_UINT32 num_layers_to_decode;
+    /** multi-component transform identifier */
+    OPJ_UINT32 mct;
+    /** rates of layers */
+    OPJ_FLOAT32 rates[100];
+    /** number of progression order changes */
+    OPJ_UINT32 numpocs;
+    /** progression order changes */
+    opj_poc_t pocs[J2K_MAX_POCS];
+
+    /** number of ppt markers (reserved size) */
+    OPJ_UINT32 ppt_markers_count;
+    /** ppt markers data (table indexed by Zppt) */
+    opj_ppx* ppt_markers;
+
+    /** packet header store there for future use in t2_decode_packet */
+    OPJ_BYTE *ppt_data;
+    /** used to keep a track of the allocated memory */
+    OPJ_BYTE *ppt_buffer;
+    /** Number of bytes stored inside ppt_data*/
+    OPJ_UINT32 ppt_data_size;
+    /** size of ppt_data*/
+    OPJ_UINT32 ppt_len;
+    /** PSNR values */
+    OPJ_FLOAT32 distoratio[100];
+    /** tile-component coding parameters */
+    opj_tccp_t *tccps;
+    /** current tile part number or -1 if first time into this tile */
+    OPJ_INT32  m_current_tile_part_number;
+    /** number of tile parts for the tile. */
+    OPJ_UINT32 m_nb_tile_parts;
+    /** data for the tile */
+    OPJ_BYTE *      m_data;
+    /** size of data */
+    OPJ_UINT32      m_data_size;
+    /** encoding norms */
+    OPJ_FLOAT64 *   mct_norms;
+    /** the mct decoding matrix */
+    OPJ_FLOAT32 *   m_mct_decoding_matrix;
+    /** the mct coding matrix */
+    OPJ_FLOAT32 *   m_mct_coding_matrix;
+    /** mct records */
+    opj_mct_data_t * m_mct_records;
+    /** the number of mct records. */
+    OPJ_UINT32 m_nb_mct_records;
+    /** the max number of mct records. */
+    OPJ_UINT32 m_nb_max_mct_records;
+    /** mcc records */
+    opj_simple_mcc_decorrelation_data_t * m_mcc_records;
+    /** the number of mct records. */
+    OPJ_UINT32 m_nb_mcc_records;
+    /** the max number of mct records. */
+    OPJ_UINT32 m_nb_max_mcc_records;
+
+
+    /***** FLAGS *******/
+    /** If cod == 1 --> there was a COD marker for the present tile */
+    OPJ_BITFIELD cod : 1;
+    /** If ppt == 1 --> there was a PPT marker for the present tile */
+    OPJ_BITFIELD ppt : 1;
+    /** indicates if a POC marker has been used O:NO, 1:YES */
+    OPJ_BITFIELD POC : 1;
+} opj_tcp_t;
+
+
+/**
+Rate allocation strategy
+*/
+typedef enum {
+    RATE_DISTORTION_RATIO = 0,    /** allocation by rate/distortion */
+    FIXED_DISTORTION_RATIO = 1,   /** allocation by fixed distortion ratio (PSNR) (fixed quality) */
+    FIXED_LAYER = 2,              /** allocation by fixed layer (number of passes per layer / resolution / subband) */
+} J2K_QUALITY_LAYER_ALLOCATION_STRATEGY;
+
+
+typedef struct opj_encoding_param {
+    /** Maximum rate for each component. If == 0, component size limitation is not considered */
+    OPJ_UINT32 m_max_comp_size;
+    /** Position of tile part flag in progression order*/
+    OPJ_INT32 m_tp_pos;
+    /** fixed layer */
+    OPJ_INT32 *m_matrice;
+    /** Flag determining tile part generation*/
+    OPJ_BYTE m_tp_flag;
+    /** Quality layer allocation strategy */
+    J2K_QUALITY_LAYER_ALLOCATION_STRATEGY m_quality_layer_alloc_strategy;
+    /** Enabling Tile part generation*/
+    OPJ_BITFIELD m_tp_on : 1;
+}
+opj_encoding_param_t;
+
+typedef struct opj_decoding_param {
+    /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
+    OPJ_UINT32 m_reduce;
+    /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
+    OPJ_UINT32 m_layer;
+}
+opj_decoding_param_t;
+
+
+/**
+ * Coding parameters
+ */
+typedef struct opj_cp {
+    /** Size of the image in bits*/
+    /*int img_size;*/
+    /** Rsiz*/
+    OPJ_UINT16 rsiz;
+    /** XTOsiz */
+    OPJ_UINT32 tx0; /* MSD see norm */
+    /** YTOsiz */
+    OPJ_UINT32 ty0; /* MSD see norm */
+    /** XTsiz */
+    OPJ_UINT32 tdx;
+    /** YTsiz */
+    OPJ_UINT32 tdy;
+    /** comment */
+    OPJ_CHAR *comment;
+    /** number of tiles in width */
+    OPJ_UINT32 tw;
+    /** number of tiles in height */
+    OPJ_UINT32 th;
+
+    /** number of ppm markers (reserved size) */
+    OPJ_UINT32 ppm_markers_count;
+    /** ppm markers data (table indexed by Zppm) */
+    opj_ppx* ppm_markers;
+
+    /** packet header store there for future use in t2_decode_packet */
+    OPJ_BYTE *ppm_data;
+    /** size of the ppm_data*/
+    OPJ_UINT32 ppm_len;
+    /** size of the ppm_data*/
+    OPJ_UINT32 ppm_data_read;
+
+    OPJ_BYTE *ppm_data_current;
+
+    /** packet header storage original buffer */
+    OPJ_BYTE *ppm_buffer;
+    /** pointer remaining on the first byte of the first header if ppm is used */
+    OPJ_BYTE *ppm_data_first;
+    /** Number of bytes actually stored inside the ppm_data */
+    OPJ_UINT32 ppm_data_size;
+    /** use in case of multiple marker PPM (number of info already store) */
+    OPJ_INT32 ppm_store;
+    /** use in case of multiple marker PPM (case on non-finished previous info) */
+    OPJ_INT32 ppm_previous;
+
+    /** tile coding parameters */
+    opj_tcp_t *tcps;
+
+    union {
+        opj_decoding_param_t m_dec;
+        opj_encoding_param_t m_enc;
+    }
+    m_specific_param;
+
+    /** OPJ_TRUE if entire bit stream must be decoded, OPJ_FALSE if partial bitstream decoding allowed */
+    OPJ_BOOL strict;
+
+    /* UniPG>> */
+#ifdef USE_JPWL
+    /** enables writing of EPC in MH, thus activating JPWL */
+    OPJ_BOOL epc_on;
+    /** enables writing of EPB, in case of activated JPWL */
+    OPJ_BOOL epb_on;
+    /** enables writing of ESD, in case of activated JPWL */
+    OPJ_BOOL esd_on;
+    /** enables writing of informative techniques of ESD, in case of activated JPWL */
+    OPJ_BOOL info_on;
+    /** enables writing of RED, in case of activated JPWL */
+    OPJ_BOOL red_on;
+    /** error protection method for MH (0,1,16,32,37-128) */
+    int hprot_MH;
+    /** tile number of header protection specification (>=0) */
+    int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
+    /** error protection methods for TPHs (0,1,16,32,37-128) */
+    int hprot_TPH[JPWL_MAX_NO_TILESPECS];
+    /** tile number of packet protection specification (>=0) */
+    int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
+    /** packet number of packet protection specification (>=0) */
+    int pprot_packno[JPWL_MAX_NO_PACKSPECS];
+    /** error protection methods for packets (0,1,16,32,37-128) */
+    int pprot[JPWL_MAX_NO_PACKSPECS];
+    /** enables writing of ESD, (0/2/4 bytes) */
+    int sens_size;
+    /** sensitivity addressing size (0=auto/2/4 bytes) */
+    int sens_addr;
+    /** sensitivity range (0-3) */
+    int sens_range;
+    /** sensitivity method for MH (-1,0-7) */
+    int sens_MH;
+    /** tile number of sensitivity specification (>=0) */
+    int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
+    /** sensitivity methods for TPHs (-1,0-7) */
+    int sens_TPH[JPWL_MAX_NO_TILESPECS];
+    /** enables JPWL correction at the decoder */
+    OPJ_BOOL correct;
+    /** expected number of components at the decoder */
+    int exp_comps;
+    /** maximum number of tiles at the decoder */
+    OPJ_UINT32 max_tiles;
+#endif /* USE_JPWL */
+
+    /******** FLAGS *********/
+    /** if ppm == 1 --> there was a PPM marker*/
+    OPJ_BITFIELD ppm : 1;
+    /** tells if the parameter is a coding or decoding one */
+    OPJ_BITFIELD m_is_decoder : 1;
+    /** whether different bit depth or sign per component is allowed. Decoder only for ow */
+    OPJ_BITFIELD allow_different_bit_depth_sign : 1;
+    /* <<UniPG */
+} opj_cp_t;
+
+/** Entry of a TLM marker segment */
+typedef struct opj_j2k_tlm_tile_part_info {
+    /** Tile index of the tile part. Ttlmi field */
+    OPJ_UINT16 m_tile_index;
+    /** Length in bytes, from the beginning of the SOT marker to the end of
+     * the bit stream data for that tile-part. Ptlmi field */
+    OPJ_UINT32 m_length;
+} opj_j2k_tlm_tile_part_info_t;
+
+/** Information got from the concatenation of TLM marker semgnets. */
+typedef struct opj_j2k_tlm_info {
+    /** Number of entries in m_tile_part_infos. */
+    OPJ_UINT32 m_entries_count;
+    /** Array of m_entries_count values. */
+    opj_j2k_tlm_tile_part_info_t* m_tile_part_infos;
+
+    OPJ_BOOL m_is_invalid;
+} opj_j2k_tlm_info_t;
+
+typedef struct opj_j2k_dec {
+    /** locate in which part of the codestream the decoder is (main header, tile header, end) */
+    OPJ_UINT32 m_state;
+    /**
+     * store decoding parameters common to all tiles (information like COD, COC in main header)
+     */
+    opj_tcp_t *m_default_tcp;
+    OPJ_BYTE  *m_header_data;
+    OPJ_UINT32 m_header_data_size;
+    /** to tell the tile part length */
+    OPJ_UINT32 m_sot_length;
+    /** Only tiles index in the correct range will be decoded.*/
+    OPJ_UINT32 m_start_tile_x;
+    OPJ_UINT32 m_start_tile_y;
+    OPJ_UINT32 m_end_tile_x;
+    OPJ_UINT32 m_end_tile_y;
+
+    /** Index of the tile to decode (used in get_tile) */
+    OPJ_INT32 m_tile_ind_to_dec;
+    /** Position of the last SOT marker read */
+    OPJ_OFF_T m_last_sot_read_pos;
+
+    /**
+     * Indicate that the current tile-part is assume as the last tile part of the codestream.
+     * It is useful in the case of PSot is equal to zero. The sot length will be compute in the
+     * SOD reader function. FIXME NOT USED for the moment
+     */
+    OPJ_BOOL   m_last_tile_part;
+
+    OPJ_UINT32   m_numcomps_to_decode;
+    OPJ_UINT32  *m_comps_indices_to_decode;
+
+    opj_j2k_tlm_info_t m_tlm;
+
+    /** Below if used when there's TLM information available and we use
+     * opj_set_decoded_area() to a subset of all tiles.
+     */
+    /* Current index in m_intersecting_tile_parts_offset[] to seek to */
+    OPJ_UINT32  m_idx_intersecting_tile_parts;
+    /* Number of elements of m_intersecting_tile_parts_offset[] */
+    OPJ_UINT32  m_num_intersecting_tile_parts;
+    /* Start offset of contributing tile parts */
+    OPJ_OFF_T*  m_intersecting_tile_parts_offset;
+
+    /** to tell that a tile can be decoded. */
+    OPJ_BITFIELD m_can_decode : 1;
+    OPJ_BITFIELD m_discard_tiles : 1;
+    OPJ_BITFIELD m_skip_data : 1;
+    /** TNsot correction : see issue 254 **/
+    OPJ_BITFIELD m_nb_tile_parts_correction_checked : 1;
+    OPJ_BITFIELD m_nb_tile_parts_correction : 1;
+
+} opj_j2k_dec_t;
+
+typedef struct opj_j2k_enc {
+    /** Tile part number, regardless of poc, for each new poc, tp is reset to 1*/
+    OPJ_UINT32 m_current_poc_tile_part_number; /* tp_num */
+
+    /** Tile part number currently coding, taking into account POC. m_current_tile_part_number holds the total number of tile parts while encoding the last tile part.*/
+    OPJ_UINT32 m_current_tile_part_number; /*cur_tp_num */
+
+    /* whether to generate TLM markers */
+    OPJ_BOOL   m_TLM;
+
+    /* whether the Ttlmi field in a TLM marker is a byte (otherwise a uint16) */
+    OPJ_BOOL   m_Ttlmi_is_byte;
+
+    /**
+    locate the start position of the TLM marker
+    after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
+    */
+    OPJ_OFF_T m_tlm_start;
+    /**
+     * Stores the sizes of the tlm.
+     */
+    OPJ_BYTE * m_tlm_sot_offsets_buffer;
+    /**
+     * The current offset of the tlm buffer.
+     */
+    OPJ_BYTE * m_tlm_sot_offsets_current;
+
+    /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
+    /** used in TLMmarker*/
+    OPJ_UINT32 m_total_tile_parts;   /* totnum_tp */
+
+    /* encoded data for a tile */
+    OPJ_BYTE * m_encoded_tile_data;
+
+    /* size of the encoded_data */
+    OPJ_UINT32 m_encoded_tile_size;
+
+    /* encoded data for a tile */
+    OPJ_BYTE * m_header_tile_data;
+
+    /* size of the encoded_data */
+
+    OPJ_UINT32 m_header_tile_data_size;
+
+    /* whether to generate PLT markers */
+    OPJ_BOOL   m_PLT;
+
+    /* reserved bytes in m_encoded_tile_size for PLT markers */
+    OPJ_UINT32 m_reserved_bytes_for_PLT;
+
+    /** Number of components */
+    OPJ_UINT32 m_nb_comps;
+
+} opj_j2k_enc_t;
+
+
+
+struct opj_tcd;
+/**
+JPEG-2000 codestream reader/writer
+*/
+typedef struct opj_j2k {
+    /* J2K codestream is decoded*/
+    OPJ_BOOL m_is_decoder;
+
+    /* FIXME DOC*/
+    union {
+        opj_j2k_dec_t m_decoder;
+        opj_j2k_enc_t m_encoder;
+    }
+    m_specific_param;
+
+    /** pointer to the internal/private encoded / decoded image */
+    opj_image_t* m_private_image;
+
+    /* pointer to the output image (decoded)*/
+    opj_image_t* m_output_image;
+
+    /** Coding parameters */
+    opj_cp_t m_cp;
+
+    /** the list of procedures to exec **/
+    opj_procedure_list_t *  m_procedure_list;
+
+    /** the list of validation procedures to follow to make sure the code is valid **/
+    opj_procedure_list_t *  m_validation_list;
+
+    /** helper used to write the index file */
+    opj_codestream_index_t *cstr_index;
+
+    /** number of the tile currently concern by coding/decoding */
+    OPJ_UINT32 m_current_tile_number;
+
+    /** the current tile coder/decoder **/
+    struct opj_tcd *    m_tcd;
+
+    /** Thread pool */
+    opj_thread_pool_t* m_tp;
+
+    /** Image width coming from JP2 IHDR box. 0 from a pure codestream */
+    OPJ_UINT32 ihdr_w;
+
+    /** Image height coming from JP2 IHDR box. 0 from a pure codestream */
+    OPJ_UINT32 ihdr_h;
+
+    /** Set to 1 by the decoder initialization if OPJ_DPARAMETERS_DUMP_FLAG is set */
+    unsigned int dump_state;
+}
+opj_j2k_t;
+
+
+
+
+/** @name Exported functions */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+
+/**
+Setup the decoder decoding parameters using user parameters.
+Decoding parameters are returned in j2k->cp.
+@param j2k J2K decompressor handle
+@param parameters decompression parameters
+*/
+void opj_j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
+
+void opj_j2k_decoder_set_strict_mode(opj_j2k_t *j2k, OPJ_BOOL strict);
+
+OPJ_BOOL opj_j2k_set_threads(opj_j2k_t *j2k, OPJ_UINT32 num_threads);
+
+/**
+ * Creates a J2K compression structure
+ *
+ * @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
+*/
+opj_j2k_t* opj_j2k_create_compress(void);
+
+
+OPJ_BOOL opj_j2k_setup_encoder(opj_j2k_t *p_j2k,
+                               opj_cparameters_t *parameters,
+                               opj_image_t *image,
+                               opj_event_mgr_t * p_manager);
+
+/**
+Converts an enum type progression order to string type
+*/
+const char *opj_j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
+
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
+
+/**
+ * Ends the decompression procedures and possibiliy add data to be read after the
+ * codestream.
+ */
+OPJ_BOOL opj_j2k_end_decompress(opj_j2k_t *j2k,
+                                opj_stream_private_t *p_stream,
+                                opj_event_mgr_t * p_manager);
+
+/**
+ * Reads a jpeg2000 codestream header structure.
+ *
+ * @param p_stream the stream to read data from.
+ * @param p_j2k the jpeg2000 codec.
+ * @param p_image FIXME DOC
+ * @param p_manager the user event manager.
+ *
+ * @return true if the box is valid.
+ */
+OPJ_BOOL opj_j2k_read_header(opj_stream_private_t *p_stream,
+                             opj_j2k_t* p_j2k,
+                             opj_image_t** p_image,
+                             opj_event_mgr_t* p_manager);
+
+
+/**
+ * Destroys a jpeg2000 codec.
+ *
+ * @param   p_j2k   the jpeg20000 structure to destroy.
+ */
+void opj_j2k_destroy(opj_j2k_t *p_j2k);
+
+/**
+ * Destroys a codestream index structure.
+ *
+ * @param   p_cstr_ind  the codestream index parameter to destroy.
+ */
+void j2k_destroy_cstr_index(opj_codestream_index_t *p_cstr_ind);
+
+/**
+ * Decode tile data.
+ * @param   p_j2k       the jpeg2000 codec.
+ * @param   p_tile_index
+ * @param p_data       FIXME DOC
+ * @param p_data_size  FIXME DOC
+ * @param   p_stream            the stream to write data to.
+ * @param   p_manager   the user event manager.
+ */
+OPJ_BOOL opj_j2k_decode_tile(opj_j2k_t * p_j2k,
+                             OPJ_UINT32 p_tile_index,
+                             OPJ_BYTE * p_data,
+                             OPJ_UINT32 p_data_size,
+                             opj_stream_private_t *p_stream,
+                             opj_event_mgr_t * p_manager);
+
+/**
+ * Reads a tile header.
+ * @param   p_j2k       the jpeg2000 codec.
+ * @param   p_tile_index FIXME DOC
+ * @param   p_data_size FIXME DOC
+ * @param   p_tile_x0 FIXME DOC
+ * @param   p_tile_y0 FIXME DOC
+ * @param   p_tile_x1 FIXME DOC
+ * @param   p_tile_y1 FIXME DOC
+ * @param   p_nb_comps FIXME DOC
+ * @param   p_go_on FIXME DOC
+ * @param   p_stream            the stream to write data to.
+ * @param   p_manager   the user event manager.
+ */
+OPJ_BOOL opj_j2k_read_tile_header(opj_j2k_t * p_j2k,
+                                  OPJ_UINT32 * p_tile_index,
+                                  OPJ_UINT32 * p_data_size,
+                                  OPJ_INT32 * p_tile_x0,
+                                  OPJ_INT32 * p_tile_y0,
+                                  OPJ_INT32 * p_tile_x1,
+                                  OPJ_INT32 * p_tile_y1,
+                                  OPJ_UINT32 * p_nb_comps,
+                                  OPJ_BOOL * p_go_on,
+                                  opj_stream_private_t *p_stream,
+                                  opj_event_mgr_t * p_manager);
+
+
+/** Sets the indices of the components to decode.
+ *
+ * @param p_j2k         the jpeg2000 codec.
+ * @param numcomps      Number of components to decode.
+ * @param comps_indices Array of num_compts indices (numbering starting at 0)
+ *                      corresponding to the components to decode.
+ * @param p_manager     Event manager
+ *
+ * @return OPJ_TRUE in case of success.
+ */
+OPJ_BOOL opj_j2k_set_decoded_components(opj_j2k_t *p_j2k,
+                                        OPJ_UINT32 numcomps,
+                                        const OPJ_UINT32* comps_indices,
+                                        opj_event_mgr_t * p_manager);
+
+/**
+ * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
+ *
+ * @param   p_j2k           the jpeg2000 codec.
+ * @param   p_image     FIXME DOC
+ * @param   p_start_x       the left position of the rectangle to decode (in image coordinates).
+ * @param   p_start_y       the up position of the rectangle to decode (in image coordinates).
+ * @param   p_end_x         the right position of the rectangle to decode (in image coordinates).
+ * @param   p_end_y         the bottom position of the rectangle to decode (in image coordinates).
+ * @param   p_manager       the user event manager
+ *
+ * @return  true            if the area could be set.
+ */
+OPJ_BOOL opj_j2k_set_decode_area(opj_j2k_t *p_j2k,
+                                 opj_image_t* p_image,
+                                 OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
+                                 OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
+                                 opj_event_mgr_t * p_manager);
+
+/**
+ * Creates a J2K decompression structure.
+ *
+ * @return a handle to a J2K decompressor if successful, NULL otherwise.
+ */
+opj_j2k_t* opj_j2k_create_decompress(void);
+
+
+/**
+ * Dump some elements from the J2K decompression structure .
+ *
+ *@param p_j2k              the jpeg2000 codec.
+ *@param flag               flag to describe what elements are dump.
+ *@param out_stream         output stream where dump the elements.
+ *
+*/
+void j2k_dump(opj_j2k_t* p_j2k, OPJ_INT32 flag, FILE* out_stream);
+
+
+
+/**
+ * Dump an image header structure.
+ *
+ *@param image          the image header to dump.
+ *@param dev_dump_flag      flag to describe if we are in the case of this function is use outside j2k_dump function
+ *@param out_stream         output stream where dump the elements.
+ */
+void j2k_dump_image_header(opj_image_t* image, OPJ_BOOL dev_dump_flag,
+                           FILE* out_stream);
+
+/**
+ * Dump a component image header structure.
+ *
+ *@param comp       the component image header to dump.
+ *@param dev_dump_flag      flag to describe if we are in the case of this function is use outside j2k_dump function
+ *@param out_stream         output stream where dump the elements.
+ */
+void j2k_dump_image_comp_header(opj_image_comp_t* comp, OPJ_BOOL dev_dump_flag,
+                                FILE* out_stream);
+
+/**
+ * Get the codestream info from a JPEG2000 codec.
+ *
+ *@param    p_j2k               the component image header to dump.
+ *
+ *@return   the codestream information extract from the jpg2000 codec
+ */
+opj_codestream_info_v2_t* j2k_get_cstr_info(opj_j2k_t* p_j2k);
+
+/**
+ * Get the codestream index from a JPEG2000 codec.
+ *
+ *@param    p_j2k               the component image header to dump.
+ *
+ *@return   the codestream index extract from the jpg2000 codec
+ */
+opj_codestream_index_t* j2k_get_cstr_index(opj_j2k_t* p_j2k);
+
+/**
+ * Decode an image from a JPEG-2000 codestream
+ * @param j2k J2K decompressor handle
+ * @param p_stream  FIXME DOC
+ * @param p_image   FIXME DOC
+ * @param p_manager FIXME DOC
+ * @return FIXME DOC
+*/
+OPJ_BOOL opj_j2k_decode(opj_j2k_t *j2k,
+                        opj_stream_private_t *p_stream,
+                        opj_image_t *p_image,
+                        opj_event_mgr_t *p_manager);
+
+
+OPJ_BOOL opj_j2k_get_tile(opj_j2k_t *p_j2k,
+                          opj_stream_private_t *p_stream,
+                          opj_image_t* p_image,
+                          opj_event_mgr_t * p_manager,
+                          OPJ_UINT32 tile_index);
+
+OPJ_BOOL opj_j2k_set_decoded_resolution_factor(opj_j2k_t *p_j2k,
+        OPJ_UINT32 res_factor,
+        opj_event_mgr_t * p_manager);
+
+/**
+ * Specify extra options for the encoder.
+ *
+ * @param  p_j2k        the jpeg2000 codec.
+ * @param  p_options    options
+ * @param  p_manager    the user event manager
+ *
+ * @see opj_encoder_set_extra_options() for more details.
+ */
+OPJ_BOOL opj_j2k_encoder_set_extra_options(
+    opj_j2k_t *p_j2k,
+    const char* const* p_options,
+    opj_event_mgr_t * p_manager);
+
+/**
+ * Writes a tile.
+ * @param   p_j2k       the jpeg2000 codec.
+ * @param p_tile_index FIXME DOC
+ * @param p_data FIXME DOC
+ * @param p_data_size FIXME DOC
+ * @param   p_stream            the stream to write data to.
+ * @param   p_manager   the user event manager.
+ */
+OPJ_BOOL opj_j2k_write_tile(opj_j2k_t * p_j2k,
+                            OPJ_UINT32 p_tile_index,
+                            OPJ_BYTE * p_data,
+                            OPJ_UINT32 p_data_size,
+                            opj_stream_private_t *p_stream,
+                            opj_event_mgr_t * p_manager);
+
+/**
+ * Encodes an image into a JPEG-2000 codestream
+ */
+OPJ_BOOL opj_j2k_encode(opj_j2k_t * p_j2k,
+                        opj_stream_private_t *cio,
+                        opj_event_mgr_t * p_manager);
+
+/**
+ * Starts a compression scheme, i.e. validates the codec parameters, writes the header.
+ *
+ * @param   p_j2k       the jpeg2000 codec.
+ * @param   p_stream            the stream object.
+ * @param   p_image FIXME DOC
+ * @param   p_manager   the user event manager.
+ *
+ * @return true if the codec is valid.
+ */
+OPJ_BOOL opj_j2k_start_compress(opj_j2k_t *p_j2k,
+                                opj_stream_private_t *p_stream,
+                                opj_image_t * p_image,
+                                opj_event_mgr_t * p_manager);
+
+/**
+ * Ends the compression procedures and possibiliy add data to be read after the
+ * codestream.
+ */
+OPJ_BOOL opj_j2k_end_compress(opj_j2k_t *p_j2k,
+                              opj_stream_private_t *cio,
+                              opj_event_mgr_t * p_manager);
+
+OPJ_BOOL opj_j2k_setup_mct_encoding(opj_tcp_t * p_tcp, opj_image_t * p_image);
+
+
+#endif /* OPJ_J2K_H */