openjpeg/libopenjpeg/j2k.h

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/*
* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
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* Copyright (c) 2005, Herv<EFBFBD> Drolon, FreeImage Team
* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
* 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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/** @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 */
/* ----------------------------------------------------------------------- */
/**
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 {
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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_STATUS;
/* ----------------------------------------------------------------------- */
/**
Quantization stepsize
*/
typedef struct opj_stepsize {
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/** exponent */
int expn;
/** mantissa */
int mant;
} opj_stepsize_t;
/**
Tile-component coding parameters
*/
typedef struct opj_tccp {
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/** coding style */
int csty;
/** number of resolutions */
int numresolutions;
/** code-blocks width */
int cblkw;
/** code-blocks height */
int cblkh;
/** code-block coding style */
int cblksty;
/** discrete wavelet transform identifier */
int qmfbid;
/** quantisation style */
int qntsty;
/** stepsizes used for quantization */
opj_stepsize_t stepsizes[J2K_MAXBANDS];
/** number of guard bits */
int numgbits;
/** Region Of Interest shift */
int roishift;
/** precinct width */
int prcw[J2K_MAXRLVLS];
/** precinct height */
int prch[J2K_MAXRLVLS];
} 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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/** 1 : first part-tile of a tile */
int first;
/** coding style */
int csty;
/** progression order */
OPJ_PROG_ORDER prg;
/** number of layers */
int numlayers;
/** multi-component transform identifier */
int mct;
/** rates of layers */
int rates[100];
/** number of progression order changes */
int numpocs;
/** indicates if a POC marker has been used O:NO, 1:YES */
int POC;
/** progression order changes */
opj_poc_t pocs[32];
/** packet header store there for futur use in t2_decode_packet */
unsigned char *ppt_data;
/** pointer remaining on the first byte of the first header if ppt is used */
unsigned char *ppt_data_first;
/** If ppt == 1 --> there was a PPT marker for the present tile */
int ppt;
/** used in case of multiple marker PPT (number of info already stored) */
int ppt_store;
/** ppmbug1 */
int ppt_len;
/** add fixed_quality */
float distoratio[100];
/** tile-component coding parameters */
opj_tccp_t *tccps;
} opj_tcp_t;
/**
Coding parameters
*/
typedef struct opj_cp {
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/** allocation by rate/distortion */
int disto_alloc;
/** allocation by fixed layer */
int fixed_alloc;
/** add fixed_quality */
int fixed_quality;
/** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
int reduce;
/** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
int layer;
/** 0 = no index || 1 = index */
int index_on;
/** XTOsiz */
int tx0;
/** YTOsiz */
int ty0;
/** XTsiz */
int tdx;
/** YTsiz */
int tdy;
/** comment for coding */
char *comment;
/** number of tiles in width */
int tw;
/** number of tiles in heigth */
int th;
/** ID number of the tiles present in the codestream */
int *tileno;
/** size of the vector tileno */
int tileno_size;
/** packet header store there for futur use in t2_decode_packet */
unsigned char *ppm_data;
/** pointer remaining on the first byte of the first header if ppm is used */
unsigned char *ppm_data_first;
/** if ppm == 1 --> there was a PPM marker for the present tile */
int ppm;
/** use in case of multiple marker PPM (number of info already store) */
int ppm_store;
/** use in case of multiple marker PPM (case on non-finished previous info) */
int ppm_previous;
/** ppmbug1 */
int ppm_len;
/** tile coding parameters */
opj_tcp_t *tcps;
/** fixed layer */
int *matrice;
} opj_cp_t;
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/**
Information concerning a packet inside tile
*/
typedef struct opj_packet_info {
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/** start position */
int start_pos;
/** end position */
int end_pos;
/** ADD for Marcela */
double disto;
} opj_packet_info_t;
/**
Index structure : information regarding tiles inside image
*/
typedef struct opj_tile_info {
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/** value of thresh for each layer by tile cfr. Marcela */
double *thresh;
/** number of tile */
int num_tile;
/** start position */
int start_pos;
/** end position of the header */
int end_header;
/** end position */
int end_pos;
/** precinct number for each resolution level (width) */
int pw[33];
/** precinct number for each resolution level (height) */
int ph[33];
/** precinct size (in power of 2), in X for each resolution level */
int pdx[33];
/** precinct size (in power of 2), in Y for each resolution level */
int pdy[33];
/** information concerning packets inside tile */
opj_packet_info_t *packet;
/** add fixed_quality */
int nbpix;
/** add fixed_quality */
double distotile;
} opj_tile_info_t;
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/**
Index structure
*/
typedef struct opj_image_info {
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/** 0 = no index || 1 = index */
int index_on;
/** maximum distortion reduction on the whole image (add for Marcela) */
double D_max;
/** packet number */
int num;
/** writing the packet in the index with t2_encode_packets */
int index_write;
/** image width */
int image_w;
/** image height */
int image_h;
/** progression order */
OPJ_PROG_ORDER prog;
/** tile size in x */
int tile_x;
/** tile size in y */
int tile_y;
/** */
int tile_Ox;
/** */
int tile_Oy;
/** number of tiles in X */
int tw;
/** number of tiles in Y */
int th;
/** component numbers */
int comp;
/** number of layer */
int layer;
/** number of decomposition */
int decomposition;
/** main header position */
int main_head_end;
/** codestream's size */
int codestream_size;
/** information regarding tiles inside image */
opj_tile_info_t *tile;
} opj_image_info_t;
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/**
JPEG-2000 codestream reader/writer
*/
typedef struct opj_j2k {
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/** codec context */
opj_common_ptr cinfo;
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/** locate in which part of the codestream the decoder is (main header, tile header, end) */
int state;
/** number of the tile curently concern by coding/decoding */
int curtileno;
/**
locate the position of the end of the tile in the codestream,
used to detect a truncated codestream (in j2k_read_sod)
*/
unsigned char *eot;
/**
locate the start position of the SOT marker of the current coded tile:
after encoding the tile, a jump (in j2k_write_sod) is done to the SOT marker to store the value of its length.
*/
int sot_start;
int sod_start;
/**
as the J2K-file is written in several parts during encoding,
it enables to make the right correction in position return by cio_tell
*/
int pos_correction;
/** array used to store the data of each tile */
unsigned char **tile_data;
/** array used to store the length of each tile */
int *tile_len;
/**
decompression only :
store decoding parameters common to all tiles (information like COD, COC in main header)
*/
opj_tcp_t *default_tcp;
/** pointer to the encoded / decoded image */
opj_image_t *image;
/** pointer to the coding parameters */
opj_cp_t *cp;
/** helper used to write the index file */
opj_image_info_t *image_info;
/** pointer to the byte i/o stream */
opj_cio_t *cio;
} opj_j2k_t;
/** @name Exported functions */
/*@{*/
/* ----------------------------------------------------------------------- */
/**
Creates a J2K decompression structure
@param cinfo Codec context info
@return Returns a handle to a J2K decompressor if successful, returns NULL otherwise
*/
opj_j2k_t* j2k_create_decompress(opj_common_ptr cinfo);
/**
Destroy a J2K decompressor handle
@param j2k J2K decompressor handle to destroy
*/
void j2k_destroy_decompress(opj_j2k_t *j2k);
/**
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 j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
/**
Decode an image from a JPEG-2000 codestream
@param j2k J2K decompressor handle
@param cio Input buffer stream
@return Returns a decoded image if successful, returns NULL otherwise
*/
opj_image_t* j2k_decode(opj_j2k_t *j2k, opj_cio_t *cio);
/**
Decode an image form a JPT-stream (JPEG 2000, JPIP)
@param j2k J2K decompressor handle
@param cio Input buffer stream
@return Returns a decoded image if successful, returns NULL otherwise
*/
opj_image_t* j2k_decode_jpt_stream(opj_j2k_t *j2k, opj_cio_t *cio);
/**
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(opj_common_ptr cinfo);
/**
Destroy a J2K compressor handle
@param j2k J2K compressor handle to destroy
*/
void j2k_destroy_compress(opj_j2k_t *j2k);
/**
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);
/**
Encode an image into a JPEG-2000 codestream
@param j2k J2K compressor handle
@param cio Output buffer stream
@param image Image to encode
@param index Name of the index file if required, NULL otherwise
@return Returns true if successful, returns false otherwise
*/
bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, char *index);
/* ----------------------------------------------------------------------- */
/*@}*/
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/*@}*/
#endif /* __J2K_H */