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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2007, Professor Benoit Macq
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* 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
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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* Copyright (c) 2006-2007, Parvatha Elangovan
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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@brief The JPEG-2000 Codestream Reader/Writer (J2K)
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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
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#define J2K_CP_CSTY_SOP 0x02
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#define J2K_CP_CSTY_EPH 0x04
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#define J2K_CCP_CSTY_PRT 0x01
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#define J2K_CCP_CBLKSTY_LAZY 0x01
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#define J2K_CCP_CBLKSTY_RESET 0x02
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#define J2K_CCP_CBLKSTY_TERMALL 0x04
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#define J2K_CCP_CBLKSTY_VSC 0x08
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#define J2K_CCP_CBLKSTY_PTERM 0x10
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#define J2K_CCP_CBLKSTY_SEGSYM 0x20
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#define J2K_CCP_QNTSTY_NOQNT 0
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#define J2K_CCP_QNTSTY_SIQNT 1
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#define J2K_CCP_QNTSTY_SEQNT 2
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/* ----------------------------------------------------------------------- */
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#define J2K_MS_SOC 0xff4f /**< SOC marker value */
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#define J2K_MS_SOT 0xff90 /**< SOT marker value */
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#define J2K_MS_SOD 0xff93 /**< SOD marker value */
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#define J2K_MS_EOC 0xffd9 /**< EOC marker value */
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#define J2K_MS_SIZ 0xff51 /**< SIZ marker value */
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#define J2K_MS_COD 0xff52 /**< COD marker value */
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#define J2K_MS_COC 0xff53 /**< COC marker value */
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#define J2K_MS_RGN 0xff5e /**< RGN marker value */
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#define J2K_MS_QCD 0xff5c /**< QCD marker value */
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#define J2K_MS_QCC 0xff5d /**< QCC marker value */
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#define J2K_MS_POC 0xff5f /**< POC marker value */
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#define J2K_MS_TLM 0xff55 /**< TLM marker value */
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#define J2K_MS_PLM 0xff57 /**< PLM marker value */
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#define J2K_MS_PLT 0xff58 /**< PLT marker value */
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#define J2K_MS_PPM 0xff60 /**< PPM marker value */
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#define J2K_MS_PPT 0xff61 /**< PPT marker value */
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#define J2K_MS_SOP 0xff91 /**< SOP marker value */
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#define J2K_MS_EPH 0xff92 /**< EPH marker value */
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#define J2K_MS_CRG 0xff63 /**< CRG marker value */
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#define J2K_MS_COM 0xff64 /**< COM marker value */
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#define J2K_MS_EPC 0xff68 /**< EPC marker value (Part 11: JPEG 2000 for Wireless) */
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#define J2K_MS_EPB 0xff66 /**< EPB marker value (Part 11: JPEG 2000 for Wireless) */
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#define J2K_MS_ESD 0xff67 /**< ESD marker value (Part 11: JPEG 2000 for Wireless) */
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#define J2K_MS_RED 0xff69 /**< RED marker value (Part 11: JPEG 2000 for Wireless) */
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#define J2K_MS_SEC 0xff65 /**< SEC marker value (Part 8: Secure JPEG 2000) */
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#define J2K_MS_INSEC 0xff94 /**< INSEC marker value (Part 8: Secure JPEG 2000) */
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#endif /* USE_JPSEC */
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/* ----------------------------------------------------------------------- */
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Values that specify the status of the decoding process when decoding the main header.
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These values may be combined with a | operator.
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typedef enum J2K_STATUS {
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J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
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J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
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J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
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J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
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J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
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J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
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J2K_STATE_NEOC = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
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J2K_STATE_ERR = 0x0080 /**< the decoding process has encountered an error */
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/* ----------------------------------------------------------------------- */
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typedef enum T2_MODE {
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THRESH_CALC = 0, /** Function called in Rate allocation process*/
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FINAL_PASS = 1 /** Function called in Tier 2 process*/
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Quantization stepsize
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typedef struct opj_stepsize {
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Tile-component coding parameters
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typedef struct opj_tccp {
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/** number of resolutions */
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/** code-blocks width */
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/** code-blocks height */
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/** code-block coding style */
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/** discrete wavelet transform identifier */
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/** quantisation style */
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/** stepsizes used for quantization */
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opj_stepsize_t stepsizes[J2K_MAXBANDS];
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/** number of guard bits */
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/** Region Of Interest shift */
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/** precinct width */
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int prcw[J2K_MAXRLVLS];
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/** precinct height */
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int prch[J2K_MAXRLVLS];
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Tile coding parameters :
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this structure is used to store coding/decoding parameters common to all
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tiles (information like COD, COC in main header)
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typedef struct opj_tcp {
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/** 1 : first part-tile of a tile */
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/** progression order */
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/** number of layers */
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/** multi-component transform identifier */
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/** rates of layers */
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/** number of progression order changes */
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/** indicates if a POC marker has been used O:NO, 1:YES */
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/** progression order changes */
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/** packet header store there for futur use in t2_decode_packet */
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unsigned char *ppt_data;
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/** pointer remaining on the first byte of the first header if ppt is used */
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unsigned char *ppt_data_first;
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/** If ppt == 1 --> there was a PPT marker for the present tile */
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/** used in case of multiple marker PPT (number of info already stored) */
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/** add fixed_quality */
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float distoratio[100];
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/** tile-component coding parameters */
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typedef struct opj_cp {
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/** Digital cinema profile*/
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OPJ_CINEMA_MODE cinema;
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/** Maximum rate for each component. If == 0, component size limitation is not considered */
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/** Size of the image in bits*/
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OPJ_RSIZ_CAPABILITIES rsiz;
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/** Enabling Tile part generation*/
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/** Flag determining tile part generation*/
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/** Position of tile part flag in progression order*/
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/** allocation by rate/distortion */
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/** allocation by fixed layer */
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/** add fixed_quality */
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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 */
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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 */
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/** if == NO_LIMITATION, decode entire codestream; if == LIMIT_TO_MAIN_HEADER then only decode the main header */
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OPJ_LIMIT_DECODING limit_decoding;
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/** comment for coding */
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/** number of tiles in width */
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/** number of tiles in heigth */
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/** ID number of the tiles present in the codestream */
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/** size of the vector tileno */
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/** packet header store there for futur use in t2_decode_packet */
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unsigned char *ppm_data;
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/** pointer remaining on the first byte of the first header if ppm is used */
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unsigned char *ppm_data_first;
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/** if ppm == 1 --> there was a PPM marker for the present tile */
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/** use in case of multiple marker PPM (number of info already store) */
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/** use in case of multiple marker PPM (case on non-finished previous info) */
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/** tile coding parameters */
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/** enables writing of EPC in MH, thus activating JPWL */
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/** enables writing of EPB, in case of activated JPWL */
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/** enables writing of ESD, in case of activated JPWL */
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/** enables writing of informative techniques of ESD, in case of activated JPWL */
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/** enables writing of RED, in case of activated JPWL */
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/** error protection method for MH (0,1,16,32,37-128) */
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/** tile number of header protection specification (>=0) */
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int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
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/** error protection methods for TPHs (0,1,16,32,37-128) */
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int hprot_TPH[JPWL_MAX_NO_TILESPECS];
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/** tile number of packet protection specification (>=0) */
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int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
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/** packet number of packet protection specification (>=0) */
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int pprot_packno[JPWL_MAX_NO_PACKSPECS];
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/** error protection methods for packets (0,1,16,32,37-128) */
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int pprot[JPWL_MAX_NO_PACKSPECS];
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/** enables writing of ESD, (0/2/4 bytes) */
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/** sensitivity addressing size (0=auto/2/4 bytes) */
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/** sensitivity range (0-3) */
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/** sensitivity method for MH (-1,0-7) */
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/** tile number of sensitivity specification (>=0) */
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int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
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/** sensitivity methods for TPHs (-1,0-7) */
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int sens_TPH[JPWL_MAX_NO_TILESPECS];
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/** enables JPWL correction at the decoder */
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/** expected number of components at the decoder */
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/** maximum number of tiles at the decoder */
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#endif /* USE_JPWL */
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JPEG-2000 codestream reader/writer
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typedef struct opj_j2k {
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opj_common_ptr cinfo;
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/** locate in which part of the codestream the decoder is (main header, tile header, end) */
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/** number of the tile curently concern by coding/decoding */
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/** Tile part number*/
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/** Tilepart number currently coding*/
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/** Total number of tileparts of the current tile*/
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locate the start position of the TLM marker
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after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
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/** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
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/** used in TLMmarker*/
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locate the position of the end of the tile in the codestream,
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used to detect a truncated codestream (in j2k_read_sod)
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locate the start position of the SOT marker of the current coded tile:
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after encoding the tile, a jump (in j2k_write_sod) is done to the SOT marker to store the value of its length.
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as the J2K-file is written in several parts during encoding,
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it enables to make the right correction in position return by cio_tell
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/** array used to store the data of each tile */
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unsigned char **tile_data;
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/** array used to store the length of each tile */
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store decoding parameters common to all tiles (information like COD, COC in main header)
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opj_tcp_t *default_tcp;
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/** pointer to the encoded / decoded image */
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/** pointer to the coding parameters */
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/** helper used to write the index file */
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opj_codestream_info_t *cstr_info;
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/** pointer to the byte i/o stream */
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/** @name Exported functions */
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/* ----------------------------------------------------------------------- */
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Creates a J2K decompression structure
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@param cinfo Codec context info
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@return Returns a handle to a J2K decompressor if successful, returns NULL otherwise
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opj_j2k_t* j2k_create_decompress(opj_common_ptr cinfo);
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Destroy a J2K decompressor handle
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@param j2k J2K decompressor handle to destroy
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void j2k_destroy_decompress(opj_j2k_t *j2k);
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Setup the decoder decoding parameters using user parameters.
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Decoding parameters are returned in j2k->cp.
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@param j2k J2K decompressor handle
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@param parameters decompression parameters
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void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
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Decode an image from a JPEG-2000 codestream
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@param j2k J2K decompressor handle
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@param cio Input buffer stream
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@param cstr_info Codestream information structure if required, NULL otherwise
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@return Returns a decoded image if successful, returns NULL otherwise
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opj_image_t* j2k_decode(opj_j2k_t *j2k, opj_cio_t *cio, opj_codestream_info_t *cstr_info);
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Decode an image form a JPT-stream (JPEG 2000, JPIP)
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@param j2k J2K decompressor handle
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@param cio Input buffer stream
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@param cstr_info Codestream information structure if required, NULL otherwise
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@return Returns a decoded image if successful, returns NULL otherwise
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opj_image_t* j2k_decode_jpt_stream(opj_j2k_t *j2k, opj_cio_t *cio, opj_codestream_info_t *cstr_info);
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Creates a J2K compression structure
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@param cinfo Codec context info
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@return Returns a handle to a J2K compressor if successful, returns NULL otherwise
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opj_j2k_t* j2k_create_compress(opj_common_ptr cinfo);
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Destroy a J2K compressor handle
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@param j2k J2K compressor handle to destroy
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void j2k_destroy_compress(opj_j2k_t *j2k);
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Setup the encoder parameters using the current image and using user parameters.
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Coding parameters are returned in j2k->cp.
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@param j2k J2K compressor handle
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@param parameters compression parameters
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@param image input filled image
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void j2k_setup_encoder(opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_t *image);
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Converts an enum type progression order to string type
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char *j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
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Encode an image into a JPEG-2000 codestream
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@param j2k J2K compressor handle
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@param cio Output buffer stream
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@param image Image to encode
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@param cstr_info Codestream information structure if required, NULL otherwise
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@return Returns true if successful, returns false otherwise
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bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info);
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/* ----------------------------------------------------------------------- */
added
removed
extern/libopenjpeg/j2k.h
