openjpeg/libopenjpeg/j2k.h

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/*
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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2007, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2003-2007, Francois-Olivier Devaux and 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>
* All rights reserved.
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*
* 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 __J2K_H
#define __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.
*/
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#include "openjpeg.h"
struct opj_dparameters;
struct opj_stream_private;
struct opj_event_mgr;
/** @defgroup J2K J2K - JPEG-2000 codestream reader/writer */
/*@{*/
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#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
#define J2K_CCP_CBLKSTY_RESET 0x02
#define J2K_CCP_CBLKSTY_TERMALL 0x04
#define J2K_CCP_CBLKSTY_VSC 0x08
#define J2K_CCP_CBLKSTY_PTERM 0x10
#define J2K_CCP_CBLKSTY_SEGSYM 0x20
#define J2K_CCP_QNTSTY_NOQNT 0
#define J2K_CCP_QNTSTY_SIQNT 1
#define J2K_CCP_QNTSTY_SEQNT 2
/* ----------------------------------------------------------------------- */
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#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_SIZ 0xff51 /**< SIZ marker value */
#define J2K_MS_COD 0xff52 /**< COD marker value */
#define J2K_MS_COC 0xff53 /**< COC 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 */
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/* 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) */
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#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 */
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/* <<UniPG */
/* ----------------------------------------------------------------------- */
/**
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_DEC_STATE_NONE = 0x0000, /**< a SOC marker is expected */
J2K_DEC_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
J2K_DEC_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
J2K_DEC_STATE_MH = 0x0004, /**< the decoding process is in the main header */
J2K_DEC_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
J2K_DEC_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
J2K_DEC_STATE_MT = 0x0020, /**< the EOC marker has just been read */
J2K_DEC_STATE_NEOC = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
J2K_DEC_STATE_DATA = 0x0080, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
J2K_DEC_STATE_ERR = 0x8000, /**< the decoding process has encountered an error */
J2K_DEC_STATE_EOC = 0x0100
}
J2K_DECODING_STATUS;
/**
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_ENC_STATE_NONE = 0x0000, /**< a SOC marker is expected */
J2K_ENC_STATE_ENCODE = 0x0001, /**< a SOC marker is expected */
}
J2K_ENCODING_STATUS;
/**
* Type of data for storing 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 data for storing the MCT data
*/
typedef enum MCT_ARRAY_TYPE
{
MCT_TYPE_DEPENDENCY = 0,
MCT_TYPE_DECORRELATION = 1,
MCT_TYPE_OFFSET = 2
} J2K_MCT_ARRAY_TYPE;
/* ----------------------------------------------------------------------- */
/**
Quantization stepsize
*/
typedef struct opj_stepsize
{
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/** exponent */
OPJ_UINT32 expn;
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/** mantissa */
OPJ_UINT32 mant;
}
opj_stepsize_t;
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;
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_UINT32 m_is_irreversible : 1;
}
opj_simple_mcc_decorrelation_data_t;
/**
Tile-component coding parameters
*/
typedef struct opj_tccp
{
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/** coding style */
OPJ_UINT32 csty;
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/** number of resolutions */
OPJ_UINT32 numresolutions;
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/** code-blocks width */
OPJ_UINT32 cblkw;
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/** code-blocks height */
OPJ_UINT32 cblkh;
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/** code-block coding style */
OPJ_UINT32 cblksty;
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/** discrete wavelet transform identifier */
OPJ_UINT32 qmfbid;
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/** quantisation style */
OPJ_UINT32 qntsty;
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/** stepsizes used for quantization */
opj_stepsize_t stepsizes[J2K_MAXBANDS];
/** number of guard bits */
OPJ_UINT32 numgbits;
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/** Region Of Interest shift */
OPJ_INT32 roishift;
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/** precinct width */
OPJ_UINT32 prcw[J2K_MAXRLVLS];
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/** precinct height */
OPJ_UINT32 prch[J2K_MAXRLVLS];
/** the dc_level_shift **/
OPJ_INT32 m_dc_level_shift;
}
opj_tccp_t;
/**
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
{
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/** coding style */
OPJ_UINT32 csty;
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/** progression order */
OPJ_PROG_ORDER prg;
/** number of layers */
OPJ_UINT32 numlayers;
OPJ_UINT32 num_layers_to_decode;
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/** multi-component transform identifier */
OPJ_UINT32 mct;
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/** rates of layers */
OPJ_FLOAT32 rates[100];
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/** number of progression order changes */
OPJ_UINT32 numpocs;
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/** progression order changes */
opj_poc_t pocs[32];
/** packet header store there for futur 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;
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/** add fixed_quality */
OPJ_FLOAT32 distoratio[100];
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/** tile-component coding parameters */
opj_tccp_t *tccps;
/** 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 ppt == 1 --> there was a PPT marker for the present tile */
OPJ_UINT32 ppt : 1;
/** indicates if a POC marker has been used O:NO, 1:YES */
OPJ_UINT32 POC : 1;
} opj_tcp_t;
typedef struct opj_encoding_param
{
/** Digital cinema profile*/
OPJ_CINEMA_MODE m_cinema;
/** 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;
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/** allocation by rate/distortion */
OPJ_UINT32 m_disto_alloc : 1;
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/** allocation by fixed layer */
OPJ_UINT32 m_fixed_alloc : 1;
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/** add fixed_quality */
OPJ_UINT32 m_fixed_quality : 1;
/** Enabling Tile part generation*/
OPJ_UINT32 m_tp_on : 1;
}
opj_encoding_param_t;
typedef struct opj_decoding_param
{
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/** 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;
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/** 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_RSIZ_CAPABILITIES rsiz;
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/** XTOsiz */
OPJ_INT32 tx0;
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/** YTOsiz */
OPJ_INT32 ty0;
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/** XTsiz */
OPJ_UINT32 tdx;
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/** YTsiz */
OPJ_UINT32 tdy;
/** comment */
OPJ_CHAR *comment;
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/** number of tiles in width */
OPJ_UINT32 tw;
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/** number of tiles in heigth */
OPJ_UINT32 th;
/** packet header storage original buffer */
OPJ_BYTE *ppm_buffer;
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/** packet header store there for futur use in t2_decode_packet */
OPJ_BYTE *ppm_data;
/** size of the ppm_data*/
OPJ_UINT32 ppm_len;
/** Number of bytes actually stored inside the ppm_data */
OPJ_UINT32 ppm_data_size;
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/** tile coding parameters */
opj_tcp_t *tcps;
union
{
opj_decoding_param_t m_dec;
opj_encoding_param_t m_enc;
}
m_specific_param;
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/* UniPG>> */
#ifdef USE_JPWL
/** enables writing of EPC in MH, thus activating JPWL */
bool epc_on;
/** enables writing of EPB, in case of activated JPWL */
bool epb_on;
/** enables writing of ESD, in case of activated JPWL */
bool esd_on;
/** enables writing of informative techniques of ESD, in case of activated JPWL */
bool info_on;
/** enables writing of RED, in case of activated JPWL */
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 */
bool correct;
/** expected number of components at the decoder */
int exp_comps;
/** maximum number of tiles at the decoder */
int max_tiles;
#endif /* USE_JPWL */
/******** FLAGS *********/
/** if ppm == 1 --> there was a PPM marker*/
OPJ_UINT32 ppm : 1;
/** tells if the parameter is a coding or decoding one */
OPJ_UINT32 m_is_decoder : 1;
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/* <<UniPG */
} opj_cp_t;
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typedef struct opj_j2k_dec
{
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/** 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;
/** to tell that a tile can be decoded. */
OPJ_UINT32 m_can_decode : 1;
OPJ_UINT32 m_discard_tiles : 1;
OPJ_UINT32 m_skip_data : 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
/**
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_SIZE_T m_tlm_start;
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/**
* Stores the sizes of the tlm.
*/
OPJ_BYTE * m_tlm_sot_offsets_buffer;
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/**
* 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;
} opj_j2k_enc_t;
/**
JPEG-2000 codestream reader/writer
*/
typedef struct opj_j2k
{
union
{
opj_j2k_dec_t m_decoder;
opj_j2k_enc_t m_encoder;
}
m_specific_param;
/** number of the tile curently concern by coding/decoding */
OPJ_UINT32 m_current_tile_number;
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/** pointer to the encoded / decoded image */
opj_image_t *m_image;
/** Coding parameters */
opj_cp_t m_cp;
/** the list of procedures to exec **/
struct opj_procedure_list * m_procedure_list;
/** the list of validation procedures to follow to make sure the code is valid **/
struct opj_procedure_list * m_validation_list;
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/** helper used to write the index file */
opj_codestream_info_t *cstr_info;
/** the current tile coder/decoder **/
struct opj_tcd * m_tcd;
OPJ_UINT32 m_is_decoder : 1;
}
opj_j2k_t;
/** @name Exported functions */
/*@{*/
/* ----------------------------------------------------------------------- */
/**
* Creates a J2K decompression structure.
*
* @return a handle to a J2K decompressor if successful, NULL otherwise.
*/
opj_j2k_t* j2k_create_decompress();
/**
* Destroys a jpeg2000 codec.
*
* @param p_j2k the jpeg20000 structure to destroy.
*/
void j2k_destroy (opj_j2k_t *p_j2k);
/**
* Starts a compression scheme, i.e. validates the codec parameters, writes the header.
*
* @param p_j2k the jpeg2000 codec.
* @param cio the stream object.
* @param p_manager the user event manager.
*
* @return true if the codec is valid.
*/
bool j2k_start_compress(
opj_j2k_t *p_j2k,
struct opj_stream_private *cio,
struct opj_image * p_image,
struct opj_event_mgr * p_manager
);
/**
* Ends the compression procedures and possibiliy add data to be read after the
* codestream.
*/
bool j2k_end_compress(opj_j2k_t *p_j2k, struct opj_stream_private *cio, struct opj_event_mgr * p_manager);
/**
* Sets up the decoder decoding parameters using user parameters.
* Decoding parameters are stored in j2k->cp.
*
* @param p_j2k J2K codec
* @param p_parameters decompression parameters
* @deprecated
*/
void j2k_setup_decoder(
opj_j2k_t *p_j2k,
struct opj_dparameters *p_parameters
);
/**
* Reads a jpeg2000 codestream header structure.
*
* @param cio the stream to read data from.
* @param p_j2k the jpeg2000 codec.
* @param p_manager the user event manager.
*
* @return true if the box is valid.
*/
bool j2k_read_header(
opj_j2k_t *p_j2k,
struct opj_image ** p_image,
OPJ_INT32 * p_tile_x0,
OPJ_INT32 * p_tile_y0,
OPJ_UINT32 * p_tile_width,
OPJ_UINT32 * p_tile_height,
OPJ_UINT32 * p_nb_tiles_x,
OPJ_UINT32 * p_nb_tiles_y,
struct opj_stream_private *cio,
struct opj_event_mgr * p_manager
);
/**
Decode an image from a JPEG-2000 codestream
@param j2k J2K decompressor handle
@param cio Input buffer stream
@param cstr_info Codestream information structure if required, NULL otherwise
@return Returns a decoded image if successful, returns NULL otherwise
*/
opj_image_t* j2k_decode(opj_j2k_t *j2k, struct opj_stream_private *cio, struct opj_event_mgr * p_manager);
/**
* Ends the decompression procedures and possibiliy add data to be read after the
* codestream.
*/
bool j2k_end_decompress(opj_j2k_t *j2k, struct opj_stream_private *cio, struct opj_event_mgr * p_manager);
/**
Decode an image form a JPT-stream (JPEG 2000, JPIP)
@param j2k J2K decompressor handle
@param cio Input buffer stream
@param cstr_info Codestream information structure if required, NULL otherwise
@return Returns a decoded image if successful, returns NULL otherwise
*/
opj_image_t* j2k_decode_jpt_stream(opj_j2k_t *j2k, struct opj_stream_private *cio, struct opj_codestream_info *cstr_info);
/**
Creates a J2K compression structure
@param cinfo Codec context info
@return Returns a handle to a J2K compressor if successful, returns NULL otherwise
*/
opj_j2k_t* j2k_create_compress();
/**
Setup the encoder parameters using the current image and using user parameters.
Coding parameters are returned in j2k->cp.
@param j2k J2K compressor handle
@param parameters compression parameters
@param image input filled image
*/
void j2k_setup_encoder(opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_t *image, struct opj_event_mgr * p_manager);
/**
* Writes a tile.
* @param p_j2k the jpeg2000 codec.
* @param p_stream the stream to write data to.
* @param p_manager the user event manager.
*/
bool j2k_write_tile (
opj_j2k_t * p_j2k,
OPJ_UINT32 p_tile_index,
OPJ_BYTE * p_data,
OPJ_UINT32 p_data_size,
struct opj_stream_private *p_stream,
struct opj_event_mgr * p_manager
);
/**
* Converts an enum type progression order to string type.
*
* @param prg_order the progression order to get.
*
* @return the string representation of the gicen progression order.
*/
const char * j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
/**
* Encodes an image into a JPEG-2000 codestream
*/
bool j2k_encode(
opj_j2k_t * p_j2k,
struct opj_stream_private *cio,
struct opj_event_mgr * p_manager
);
bool j2k_setup_mct_encoding (opj_tcp_t * p_tcp,opj_image_t * p_image);
/**
* Decode tile data.
* @param p_j2k the jpeg2000 codec.
* @param p_stream the stream to write data to.
* @param p_manager the user event manager.
*/
bool j2k_decode_tile (
opj_j2k_t * p_j2k,
OPJ_UINT32 p_tile_index,
OPJ_BYTE * p_data,
OPJ_UINT32 p_data_size,
struct opj_stream_private *p_stream,
struct opj_event_mgr * p_manager
);
/**
* Reads a tile header.
* @param p_j2k the jpeg2000 codec.
* @param p_stream the stream to write data to.
* @param p_manager the user event manager.
*/
bool 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,
bool * p_go_on,
struct opj_stream_private *p_stream,
struct opj_event_mgr * 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_start_x the left 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_start_y the up 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.
*/
bool j2k_set_decode_area(
opj_j2k_t *p_j2k,
OPJ_INT32 p_start_x,
OPJ_INT32 p_start_y,
OPJ_INT32 p_end_x,
OPJ_INT32 p_end_y,
struct opj_event_mgr * p_manager
);
void j2k_dump_image(FILE *fd, opj_image_t * img);
/* ----------------------------------------------------------------------- */
/*@}*/
2003-11-27 11:10:17 +01:00
/*@}*/
#endif /* __J2K_H */