2 * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
3 * Copyright (c) 2002-2007, Professor Benoit Macq
4 * Copyright (c) 2001-2003, David Janssens
5 * Copyright (c) 2002-2003, Yannick Verschueren
6 * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
7 * Copyright (c) 2005, Herve Drolon, FreeImage Team
8 * Copyright (c) 2006-2007, Parvatha Elangovan
9 * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
10 * Copyright (c) 2010-2011, Kaori Hagihara
11 * Copyright (c) 2011, Mickael Savinaud, Communications & Systemes <mickael.savinaud@c-s.fr>
12 * All rights reserved.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
24 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
27 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
40 ==========================================================
42 ==========================================================
45 /* deprecated attribute */
47 #define DEPRECATED(func) func __attribute__ ((deprecated))
48 #elif defined(_MSC_VER)
49 #define DEPRECATED(func) __declspec(deprecated) func
51 #pragma message("WARNING: You need to implement DEPRECATED for this compiler")
52 #define DEPRECATED(func) func
55 #if defined(OPJ_STATIC) || !defined(_WIN32)
59 #define OPJ_CALLCONV __stdcall
61 The following ifdef block is the standard way of creating macros which make exporting
62 from a DLL simpler. All files within this DLL are compiled with the OPJ_EXPORTS
63 symbol defined on the command line. this symbol should not be defined on any project
64 that uses this DLL. This way any other project whose source files include this file see
65 OPJ_API functions as being imported from a DLL, wheras this DLL sees symbols
66 defined with this macro as being exported.
68 #if defined(OPJ_EXPORTS) || defined(DLL_EXPORT)
69 #define OPJ_API __declspec(dllexport)
71 #define OPJ_API __declspec(dllimport)
72 #endif /* OPJ_EXPORTS */
73 #endif /* !OPJ_STATIC || !_WIN32 */
75 typedef int opj_bool; /*FIXME it should be to follow the name of others OPJ_TYPE -> OPJ_BOOL*/
79 typedef char OPJ_CHAR;
80 typedef float OPJ_FLOAT32;
81 typedef double OPJ_FLOAT64;
82 typedef unsigned char OPJ_BYTE;
83 typedef size_t OPJ_SIZE_T;
85 #include "opj_config.h"
88 typedef int8_t OPJ_INT8;
89 typedef uint8_t OPJ_UINT8;
90 typedef int16_t OPJ_INT16;
91 typedef uint16_t OPJ_UINT16;
92 typedef int32_t OPJ_INT32;
93 typedef uint32_t OPJ_UINT32;
94 typedef int64_t OPJ_INT64;
95 typedef uint64_t OPJ_UINT64;
96 #define OPJ_INT64_F "ll"
97 #define OPJ_UINT64_F "ll"
100 typedef signed __int8 OPJ_INT8;
101 typedef unsigned __int8 OPJ_UINT8;
102 typedef signed __int16 OPJ_INT16;
103 typedef unsigned __int16 OPJ_UINT16;
104 typedef signed __int32 OPJ_INT32;
105 typedef unsigned __int32 OPJ_UINT32;
106 typedef signed __int64 OPJ_INT64;
107 typedef unsigned __int64 OPJ_UINT64;
108 #define OPJ_INT64_F "I64"
109 #define OPJ_UINT64_F "I64"
111 #error unsupported platform
115 /* 64-bit file offset type */
116 typedef OPJ_INT64 OPJ_OFF_T;
117 #define OPJ_OFF_F OPJ_INT64_F
119 /* Avoid compile-time warning because parameter is not used */
120 #define OPJ_ARG_NOT_USED(x) (void)(x)
123 ==========================================================
124 Useful constant definitions
125 ==========================================================
128 #define OPJ_PATH_LEN 4096 /**< Maximum allowed size for filenames */
130 #define J2K_MAXRLVLS 33 /**< Number of maximum resolution level authorized */
131 #define J2K_MAXBANDS (3*J2K_MAXRLVLS-2) /**< Number of maximum sub-band linked to number of resolution level */
133 #define J2K_DEFAULT_NB_SEGS 10
134 #define J2K_STREAM_CHUNK_SIZE 0x100000 /** 1 mega by default */
135 #define J2K_DEFAULT_HEADER_SIZE 1000
136 #define J2K_MCC_DEFAULT_NB_RECORDS 10
137 #define J2K_MCT_DEFAULT_NB_RECORDS 10
140 #define JPWL_MAX_NO_TILESPECS 16 /**< Maximum number of tile parts expected by JPWL: increase at your will */
141 #define JPWL_MAX_NO_PACKSPECS 16 /**< Maximum number of packet parts expected by JPWL: increase at your will */
142 #define JPWL_MAX_NO_MARKERS 512 /**< Maximum number of JPWL markers: increase at your will */
143 #define JPWL_PRIVATEINDEX_NAME "jpwl_index_privatefilename" /**< index file name used when JPWL is on */
144 #define JPWL_EXPECTED_COMPONENTS 3 /**< Expect this number of components, so you'll find better the first EPB */
145 #define JPWL_MAXIMUM_TILES 8192 /**< Expect this maximum number of tiles, to avoid some crashes */
146 #define JPWL_MAXIMUM_HAMMING 2 /**< Expect this maximum number of bit errors in marker id's */
147 #define JPWL_MAXIMUM_EPB_ROOM 65450 /**< Expect this maximum number of bytes for composition of EPBs */
151 * FIXME EXPERIMENTAL FOR THE MOMENT
152 * Supported options about file information
154 #define OPJ_IMG_INFO 1 /**< Basic image information provided to the user */
155 #define OPJ_J2K_MH_INFO 2 /**< Codestream information based only on the main header */
156 #define OPJ_J2K_TH_INFO 4 /**< Tile information based on the current tile header */
157 /*FIXME #define OPJ_J2K_CSTR_INFO 6*/ /**< */
158 #define OPJ_J2K_MH_IND 16 /**< Codestream index based only on the main header */
159 #define OPJ_J2K_TH_IND 32 /**< Tile index based on the current tile */
160 /*FIXME #define OPJ_J2K_CSTR_IND 48*/ /**< */
161 #define OPJ_JP2_INFO 128 /**< JP2 file information */
162 #define OPJ_JP2_IND 256 /**< JP2 file index */
166 ==========================================================
168 ==========================================================
173 typedef enum RSIZ_CAPABILITIES {
174 STD_RSIZ = 0, /** Standard JPEG2000 profile*/
175 CINEMA2K = 3, /** Profile name for a 2K image*/
176 CINEMA4K = 4, /** Profile name for a 4K image*/
178 } OPJ_RSIZ_CAPABILITIES;
181 * Digital cinema operation mode
183 typedef enum CINEMA_MODE {
184 OFF = 0, /** Not Digital Cinema*/
185 CINEMA2K_24 = 1, /** 2K Digital Cinema at 24 fps*/
186 CINEMA2K_48 = 2, /** 2K Digital Cinema at 48 fps*/
187 CINEMA4K_24 = 3 /** 4K Digital Cinema at 24 fps*/
193 typedef enum PROG_ORDER {
194 PROG_UNKNOWN = -1, /**< place-holder */
195 LRCP = 0, /**< layer-resolution-component-precinct order */
196 RLCP = 1, /**< resolution-layer-component-precinct order */
197 RPCL = 2, /**< resolution-precinct-component-layer order */
198 PCRL = 3, /**< precinct-component-resolution-layer order */
199 CPRL = 4 /**< component-precinct-resolution-layer order */
203 * Supported image color spaces
205 typedef enum COLOR_SPACE {
206 CLRSPC_UNKNOWN = -1, /**< not supported by the library */
207 CLRSPC_UNSPECIFIED = 0, /**< not specified in the codestream */
208 CLRSPC_SRGB = 1, /**< sRGB */
209 CLRSPC_GRAY = 2, /**< grayscale */
210 CLRSPC_SYCC = 3 /**< YUV */
216 typedef enum CODEC_FORMAT {
217 CODEC_UNKNOWN = -1, /**< place-holder */
218 CODEC_J2K = 0, /**< JPEG-2000 codestream : read/write */
219 CODEC_JPT = 1, /**< JPT-stream (JPEG 2000, JPIP) : read only */
220 CODEC_JP2 = 2 /**< JPEG-2000 file format : read/write */
224 * Limit decoding to certain portions of the codestream.
226 typedef enum LIMIT_DECODING {
227 NO_LIMITATION = 0, /**< No limitation for the decoding. The entire codestream will de decoded */
228 LIMIT_TO_MAIN_HEADER = 1, /**< The decoding is limited to the Main Header */
229 DECODE_ALL_BUT_PACKETS = 2 /**< Decode everything except the JPEG 2000 packets */
230 } OPJ_LIMIT_DECODING;
234 ==========================================================
235 event manager typedef definitions
236 ==========================================================
240 * Callback function prototype for events
241 * @param msg Event message
244 typedef void (*opj_msg_callback) (const char *msg, void *client_data);
247 * Message handler object used for
250 * <li>Warning messages
251 * <li>Debugging messages
254 typedef struct opj_event_mgr {
257 /** Error message callback if available, NULL otherwise */
258 opj_msg_callback error_handler;
259 /** Warning message callback if available, NULL otherwise */
260 opj_msg_callback warning_handler;
261 /** Debug message callback if available, NULL otherwise */
262 opj_msg_callback info_handler;
267 ==========================================================
268 codec typedef definitions
269 ==========================================================
273 * Progression order changes
275 typedef struct opj_poc {
276 /** Resolution num start, Component num start, given by POC */
277 OPJ_UINT32 resno0, compno0;
278 /** Layer num end,Resolution num end, Component num end, given by POC */
279 OPJ_UINT32 layno1, resno1, compno1;
280 /** Layer num start,Precinct num start, Precinct num end */
281 int layno0, precno0, precno1;
282 /** Progression order enum*/
283 OPJ_PROG_ORDER prg1,prg;
284 /** Progression order string*/
288 /** Start and end values for Tile width and height*/
290 /** Start value, initialised in pi_initialise_encode*/
291 int layS, resS, compS, prcS;
292 /** End value, initialised in pi_initialise_encode */
293 int layE, resE, compE, prcE;
294 /** Start and end values of Tile width and height, initialised in pi_initialise_encode*/
295 int txS,txE,tyS,tyE,dx,dy;
296 /** Temporary values for Tile parts, initialised in pi_create_encode */
297 int lay_t, res_t, comp_t, prc_t,tx0_t,ty0_t;
301 * Compression parameters
303 typedef struct opj_cparameters {
304 /** size of tile: tile_size_on = false (not in argument) or = true (in argument) */
305 opj_bool tile_size_on;
314 /** allocation by rate/distortion */
316 /** allocation by fixed layer */
318 /** add fixed_quality */
319 int cp_fixed_quality;
322 /** comment for coding */
324 /** csty : coding style */
326 /** progression order (default LRCP) */
327 OPJ_PROG_ORDER prog_order;
328 /** progression order changes */
330 /** number of progression order changes (POC), default to 0 */
332 /** number of layers */
334 /** rates of layers */
335 float tcp_rates[100];
336 /** different psnr for successive layers */
337 float tcp_distoratio[100];
338 /** number of resolutions */
340 /** initial code block width, default to 64 */
342 /** initial code block height, default to 64 */
344 /** mode switch (cblk_style) */
346 /** 1 : use the irreversible DWT 9-7, 0 : use lossless compression (default) */
348 /** region of interest: affected component in [0..3], -1 means no ROI */
350 /** region of interest: upshift value */
352 /* number of precinct size specifications */
354 /** initial precinct width */
355 int prcw_init[J2K_MAXRLVLS];
356 /** initial precinct height */
357 int prch_init[J2K_MAXRLVLS];
359 /**@name command line encoder parameters (not used inside the library) */
361 /** input file name */
362 char infile[OPJ_PATH_LEN];
363 /** output file name */
364 char outfile[OPJ_PATH_LEN];
365 /** DEPRECATED. Index generation is now handeld with the opj_encode_with_info() function. Set to NULL */
367 /** DEPRECATED. Index generation is now handeld with the opj_encode_with_info() function. Set to NULL */
368 char index[OPJ_PATH_LEN];
369 /** subimage encoding: origin image offset in x direction */
371 /** subimage encoding: origin image offset in y direction */
373 /** subsampling value for dx */
375 /** subsampling value for dy */
377 /** input file format 0: PGX, 1: PxM, 2: BMP 3:TIF*/
379 /** output file format 0: J2K, 1: JP2, 2: JPT */
384 /**@name JPWL encoding parameters */
386 /** enables writing of EPC in MH, thus activating JPWL */
387 opj_bool jpwl_epc_on;
388 /** error protection method for MH (0,1,16,32,37-128) */
390 /** tile number of header protection specification (>=0) */
391 int jpwl_hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
392 /** error protection methods for TPHs (0,1,16,32,37-128) */
393 int jpwl_hprot_TPH[JPWL_MAX_NO_TILESPECS];
394 /** tile number of packet protection specification (>=0) */
395 int jpwl_pprot_tileno[JPWL_MAX_NO_PACKSPECS];
396 /** packet number of packet protection specification (>=0) */
397 int jpwl_pprot_packno[JPWL_MAX_NO_PACKSPECS];
398 /** error protection methods for packets (0,1,16,32,37-128) */
399 int jpwl_pprot[JPWL_MAX_NO_PACKSPECS];
400 /** enables writing of ESD, (0=no/1/2 bytes) */
402 /** sensitivity addressing size (0=auto/2/4 bytes) */
404 /** sensitivity range (0-3) */
406 /** sensitivity method for MH (-1=no,0-7) */
408 /** tile number of sensitivity specification (>=0) */
409 int jpwl_sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
410 /** sensitivity methods for TPHs (-1=no,0-7) */
411 int jpwl_sens_TPH[JPWL_MAX_NO_TILESPECS];
415 /** Digital Cinema compliance 0-not compliant, 1-compliant*/
416 OPJ_CINEMA_MODE cp_cinema;
417 /** Maximum rate for each component. If == 0, component size limitation is not considered */
420 OPJ_RSIZ_CAPABILITIES cp_rsiz;
421 /** Tile part generation*/
423 /** Flag for Tile part generation*/
425 /** MCT (multiple component transform) */
427 /** Enable JPIP indexing*/
429 /** Naive implementation of MCT restricted to a single reversible array based encoding without offset concerning all the components. */
434 #define OPJ_DPARAMETERS_IGNORE_PCLR_CMAP_CDEF_FLAG 0x0001
437 * Decompression parameters
439 typedef struct opj_dparameters {
441 Set the number of highest resolution levels to be discarded.
442 The image resolution is effectively divided by 2 to the power of the number of discarded levels.
443 The reduce factor is limited by the smallest total number of decomposition levels among tiles.
444 if != 0, then original dimension divided by 2^(reduce);
445 if == 0 or not used, image is decoded to the full resolution
449 Set the maximum number of quality layers to decode.
450 If there are less quality layers than the specified number, all the quality layers are decoded.
451 if != 0, then only the first "layer" layers are decoded;
452 if == 0 or not used, all the quality layers are decoded
456 /**@name command line decoder parameters (not used inside the library) */
458 /** input file name */
459 char infile[OPJ_PATH_LEN];
460 /** output file name */
461 char outfile[OPJ_PATH_LEN];
462 /** input file format 0: J2K, 1: JP2, 2: JPT */
464 /** output file format 0: PGX, 1: PxM, 2: BMP */
467 /** Decoding area left boundary */
469 /** Decoding area right boundary */
471 /** Decoding area up boundary */
473 /** Decoding area bottom boundary */
478 /** tile number ot the decoded tile*/
479 OPJ_UINT32 tile_index;
480 /** Nb of tile to decode */
481 OPJ_UINT32 nb_tile_to_decode;
486 /**@name JPWL decoding parameters */
488 /** activates the JPWL correction capabilities */
489 opj_bool jpwl_correct;
490 /** expected number of components */
492 /** maximum number of tiles */
498 Specify whether the decoding should be done on the entire codestream, or be limited to the main header
499 Limiting the decoding to the main header makes it possible to extract the characteristics of the codestream
500 if == NO_LIMITATION, the entire codestream is decoded;
501 if == LIMIT_TO_MAIN_HEADER, only the main header is decoded;
503 OPJ_LIMIT_DECODING cp_limit_decoding;
509 /* ---> FIXME V1 style */
510 /** Common fields between JPEG-2000 compression and decompression master structs. */
512 #define opj_common_fields \
513 opj_event_mgr_t *event_mgr; /**< pointer to the event manager */\
514 void * client_data; /**< Available for use by application */\
515 opj_bool is_decompressor; /**< So common code can tell which is which */\
516 OPJ_CODEC_FORMAT codec_format; /**< selected codec */\
517 void *j2k_handle; /**< pointer to the J2K codec */\
518 void *jp2_handle; /**< pointer to the JP2 codec */\
519 void *mj2_handle /**< pointer to the MJ2 codec */
521 /* Routines that are to be used by both halves of the library are declared
522 * to receive a pointer to this structure. There are no actual instances of
523 * opj_common_struct_t, only of opj_cinfo_t and opj_dinfo_t.
525 typedef struct opj_common_struct {
526 opj_common_fields; /* Fields common to both master struct types */
527 /* Additional fields follow in an actual opj_cinfo_t or
528 * opj_dinfo_t. All three structs must agree on these
529 * initial fields! (This would be a lot cleaner in C++.)
531 } opj_common_struct_t;
533 typedef opj_common_struct_t * opj_common_ptr;
536 * Compression context info
538 typedef struct opj_cinfo {
539 /** Fields shared with opj_dinfo_t */
541 /* other specific fields go here */
545 * Decompression context info
547 typedef struct opj_dinfo {
548 /** Fields shared with opj_cinfo_t */
550 /* other specific fields go here */
558 typedef void * opj_codec_t;
561 ==========================================================
562 I/O stream typedef definitions
563 ==========================================================
569 /** The stream was opened for reading. */
570 #define OPJ_STREAM_READ 0x0001
571 /** The stream was opened for writing. */
572 #define OPJ_STREAM_WRITE 0x0002
575 Byte input-output stream (CIO)
577 typedef struct opj_cio {
579 opj_common_ptr cinfo;
581 /** open mode (read/write) either OPJ_STREAM_READ or OPJ_STREAM_WRITE */
583 /** pointer to the start of the buffer */
584 unsigned char *buffer;
585 /** buffer size in bytes */
588 /** pointer to the start of the stream */
589 unsigned char *start;
590 /** pointer to the end of the stream */
592 /** pointer to the current position */
600 typedef OPJ_SIZE_T (* opj_stream_read_fn) (void * p_buffer, OPJ_SIZE_T p_nb_bytes, void * p_user_data) ;
601 typedef OPJ_SIZE_T (* opj_stream_write_fn) (void * p_buffer, OPJ_SIZE_T p_nb_bytes, void * p_user_data) ;
602 typedef OPJ_OFF_T (* opj_stream_skip_fn) (OPJ_OFF_T p_nb_bytes, void * p_user_data) ;
603 typedef opj_bool (* opj_stream_seek_fn) (OPJ_OFF_T p_nb_bytes, void * p_user_data) ;
608 typedef void * opj_stream_t;
611 ==========================================================
612 image typedef definitions
613 ==========================================================
617 * Defines a single image component
619 typedef struct opj_image_comp {
620 /** XRsiz: horizontal separation of a sample of ith component with respect to the reference grid */
622 /** YRsiz: vertical separation of a sample of ith component with respect to the reference grid */
628 /** x component offset compared to the whole image */
630 /** y component offset compared to the whole image */
634 /** image depth in bits */
636 /** signed (1) / unsigned (0) */
638 /** number of decoded resolution */
639 OPJ_UINT32 resno_decoded;
640 /** number of division by 2 of the out image compared to the original size of image */
642 /** image component data */
647 * Defines image data and characteristics
649 typedef struct opj_image {
650 /** XOsiz: horizontal offset from the origin of the reference grid to the left side of the image area */
652 /** YOsiz: vertical offset from the origin of the reference grid to the top side of the image area */
654 /** Xsiz: width of the reference grid */
656 /** Ysiz: height of the reference grid */
658 /** number of components in the image */
660 /** color space: sRGB, Greyscale or YUV */
661 OPJ_COLOR_SPACE color_space;
662 /** image components */
663 opj_image_comp_t *comps;
664 /** 'restricted' ICC profile */
665 OPJ_BYTE *icc_profile_buf;
666 /** size of ICC profile */
667 OPJ_INT32 icc_profile_len;
672 * Component parameters structure used by the opj_image_create function
674 typedef struct opj_image_comptparm {
675 /** XRsiz: horizontal separation of a sample of ith component with respect to the reference grid */
677 /** YRsiz: vertical separation of a sample of ith component with respect to the reference grid */
683 /** x component offset compared to the whole image */
685 /** y component offset compared to the whole image */
689 /** image depth in bits */
691 /** signed (1) / unsigned (0) */
693 } opj_image_cmptparm_t;
697 ==========================================================
698 Information on the JPEG 2000 codestream
699 ==========================================================
703 * Index structure : Information concerning a packet inside tile
705 typedef struct opj_packet_info {
706 /** packet start position (including SOP marker if it exists) */
708 /** end of packet header position (including EPH marker if it exists)*/
709 OPJ_OFF_T end_ph_pos;
710 /** packet end position */
712 /** packet distorsion */
721 typedef struct opj_marker_info_t {
723 unsigned short int type;
724 /** position in codestream */
726 /** length, marker val included */
732 * Index structure : Information concerning tile-parts
734 typedef struct opj_tp_info {
735 /** start position of tile part */
737 /** end position of tile part header */
739 /** end position of tile part */
741 /** start packet of tile part */
743 /** number of packets of tile part */
748 * Index structure : information regarding tiles
750 typedef struct opj_tile_info {
751 /** value of thresh for each layer by tile cfr. Marcela */
753 /** number of tile */
755 /** start position */
757 /** end position of the header */
761 /** precinct number for each resolution level (width) */
763 /** precinct number for each resolution level (height) */
765 /** precinct size (in power of 2), in X for each resolution level */
767 /** precinct size (in power of 2), in Y for each resolution level */
769 /** information concerning packets inside tile */
770 opj_packet_info_t *packet;
771 /** add fixed_quality */
773 /** add fixed_quality */
775 /** number of markers */
777 /** list of markers */
778 opj_marker_info_t *marker;
779 /** actual size of markers array */
781 /** number of tile parts */
783 /** information concerning tile parts */
788 * Index structure of the codestream
790 typedef struct opj_codestream_info {
791 /** maximum distortion reduction on the whole image (add for Marcela) */
795 /** writing the packet in the index with t2_encode_packets */
801 /** progression order */
803 /** tile size in x */
805 /** tile size in y */
811 /** number of tiles in X */
813 /** number of tiles in Y */
815 /** component numbers */
817 /** number of layer */
819 /** number of decomposition for each component */
822 /** number of markers */
824 /** list of markers */
825 opj_marker_info_t *marker;
826 /** actual size of markers array */
829 /** main header position */
831 /** main header position */
833 /** codestream's size */
835 /** information regarding tiles inside image */
836 opj_tile_info_t *tile;
837 } opj_codestream_info_t;
839 /* <----------------------------------------------------------- */
840 /* new output managment of the codestream information and index */
843 * Tile-component coding parameters information
845 typedef struct opj_tccp_info
847 /** component index */
851 /** number of resolutions */
852 OPJ_UINT32 numresolutions;
853 /** code-blocks width */
855 /** code-blocks height */
857 /** code-block coding style */
859 /** discrete wavelet transform identifier */
861 /** quantisation style */
863 /** stepsizes used for quantization */
864 OPJ_UINT32 stepsizes_mant[J2K_MAXBANDS];
865 /** stepsizes used for quantization */
866 OPJ_UINT32 stepsizes_expn[J2K_MAXBANDS];
867 /** number of guard bits */
869 /** Region Of Interest shift */
871 /** precinct width */
872 OPJ_UINT32 prcw[J2K_MAXRLVLS];
873 /** precinct height */
874 OPJ_UINT32 prch[J2K_MAXRLVLS];
879 * Tile coding parameters information
881 typedef struct opj_tile_v2_info {
883 /** number (index) of tile */
887 /** progression order */
889 /** number of layers */
890 OPJ_UINT32 numlayers;
891 /** multi-component transform identifier */
894 /** information concerning tile component parameters*/
895 opj_tccp_info_t *tccp_info;
897 } opj_tile_info_v2_t;
900 * Information structure about the codestream (FIXME should be expand and enhance)
902 typedef struct opj_codestream_info_v2 {
904 /** tile origin in x = XTOsiz */
906 /** tile origin in y = YTOsiz */
908 /** tile size in x = XTsiz */
910 /** tile size in y = YTsiz */
912 /** number of tiles in X */
914 /** number of tiles in Y */
917 /** number of components*/
920 /** Default information regarding tiles inside image */
921 opj_tile_info_v2_t m_default_tile_info;
923 /** information regarding tiles inside image */
924 opj_tile_info_v2_t *tile_info; /* FIXME not used for the moment */
926 } opj_codestream_info_v2_t;
930 * Index structure about a tile part
932 typedef struct opj_tp_index {
933 /** start position */
935 /** end position of the header */
936 OPJ_OFF_T end_header;
943 * Index structure about a tile
945 typedef struct opj_tile_index {
949 /** number of tile parts */
951 /** current nb of tile part (allocated)*/
952 OPJ_UINT32 current_nb_tps;
953 /** current tile-part index */
954 OPJ_UINT32 current_tpsno;
955 /** information concerning tile parts */
956 opj_tp_index_t *tp_index;
959 /** number of markers */
961 /** list of markers */
962 opj_marker_info_t *marker;
963 /** actual size of markers array */
964 OPJ_UINT32 maxmarknum;
968 OPJ_UINT32 nb_packet;
969 /** information concerning packets inside tile */
970 opj_packet_info_t *packet_index;
975 * Index structure of the codestream (FIXME should be expand and enhance)
977 typedef struct opj_codestream_index_ {
978 /** main header start position (SOC position) */
979 OPJ_OFF_T main_head_start;
980 /** main header end position (first SOT position) */
981 OPJ_OFF_T main_head_end;
983 /** codestream's size */
984 OPJ_UINT64 codestream_size;
987 /** number of markers */
989 /** list of markers */
990 opj_marker_info_t *marker;
991 /** actual size of markers array */
992 OPJ_UINT32 maxmarknum;
996 OPJ_UINT32 nb_of_tiles;
998 opj_tile_index_t *tile_index; /* FIXME not used for the moment */
1000 }opj_codestream_index_t;
1001 /* -----------------------------------------------------------> */
1004 ==========================================================
1005 Metadata from the JP2file
1006 ==========================================================
1010 * Info structure of the JP2 file
1013 typedef struct opj_jp2_metadata {
1017 } opj_jp2_metadata_t;
1020 * Index structure of the JP2 file
1023 typedef struct opj_jp2_index {
1036 ==========================================================
1038 ==========================================================
1041 OPJ_API const char * OPJ_CALLCONV opj_version(void);
1044 ==========================================================
1045 image functions definitions
1046 ==========================================================
1051 * @param numcmpts number of components
1052 * @param cmptparms components parameters
1053 * @param clrspc image color space
1054 * @return returns a new image structure if successful, returns NULL otherwise
1056 OPJ_API opj_image_t* OPJ_CALLCONV opj_image_create(int numcmpts, opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc);
1059 * Deallocate any resources associated with an image
1060 * @param image image to be destroyed
1062 OPJ_API void OPJ_CALLCONV opj_image_destroy(opj_image_t *image);
1066 ==========================================================
1067 stream functions definitions
1068 ==========================================================
1072 Open and allocate a memory stream for read / write.
1073 On reading, the user must provide a buffer containing encoded data. The buffer will be
1074 wrapped by the returned CIO handle.
1075 On writing, buffer parameters must be set to 0: a buffer will be allocated by the library
1076 to contain encoded data.
1077 @param cinfo Codec context info
1078 @param buffer Reading: buffer address. Writing: NULL
1079 @param length Reading: buffer length. Writing: 0
1080 @return Returns a CIO handle if successful, returns NULL otherwise
1082 OPJ_API opj_cio_t* OPJ_CALLCONV opj_cio_open(opj_common_ptr cinfo, unsigned char *buffer, int length);
1085 Close and free a CIO handle
1086 @param cio CIO handle to free
1088 OPJ_API void OPJ_CALLCONV opj_cio_close(opj_cio_t *cio);
1091 Get position in byte stream
1092 @param cio CIO handle
1093 @return Returns the position in bytes
1095 OPJ_API int OPJ_CALLCONV cio_tell(opj_cio_t *cio);
1097 Set position in byte stream
1098 @param cio CIO handle
1099 @param pos Position, in number of bytes, from the beginning of the stream
1101 OPJ_API void OPJ_CALLCONV cio_seek(opj_cio_t *cio, int pos);
1107 * Creates an abstract stream. This function does nothing except allocating memory and initializing the abstract stream.
1109 * @param l_is_reader if set to true then the stream will be an input stream, an output stream else.
1111 * @return a stream object.
1113 OPJ_API opj_stream_t* OPJ_CALLCONV opj_stream_default_create(opj_bool p_is_input);
1114 OPJ_API opj_stream_t* OPJ_CALLCONV opj_stream_create(OPJ_SIZE_T p_buffer_size, opj_bool p_is_input);
1117 * Destroys a stream created by opj_create_stream. This function does NOT close the abstract stream. If needed the user must
1118 * close its own implementation of the stream.
1120 * @param p_stream the stream to destroy.
1122 OPJ_API void OPJ_CALLCONV opj_stream_destroy(opj_stream_t* p_stream);
1125 * Sets the given function to be used as a read function.
1126 * @param p_stream the stream to modify
1127 * @param p_function the function to use a read function.
1129 OPJ_API void OPJ_CALLCONV opj_stream_set_read_function(opj_stream_t* p_stream, opj_stream_read_fn p_function);
1132 * Sets the given function to be used as a write function.
1133 * @param p_stream the stream to modify
1134 * @param p_function the function to use a write function.
1136 OPJ_API void OPJ_CALLCONV opj_stream_set_write_function(opj_stream_t* p_stream, opj_stream_write_fn p_function);
1139 * Sets the given function to be used as a skip function.
1140 * @param p_stream the stream to modify
1141 * @param p_function the function to use a skip function.
1143 OPJ_API void OPJ_CALLCONV opj_stream_set_skip_function(opj_stream_t* p_stream, opj_stream_skip_fn p_function);
1146 * Sets the given function to be used as a seek function, the stream is then seekable.
1147 * @param p_stream the stream to modify
1148 * @param p_function the function to use a skip function.
1150 OPJ_API void OPJ_CALLCONV opj_stream_set_seek_function(opj_stream_t* p_stream, opj_stream_seek_fn p_function);
1154 * Sets the given data to be used as a user data for the stream.
1155 * @param p_stream the stream to modify
1156 * @param p_data the data to set.
1158 OPJ_API void OPJ_CALLCONV opj_stream_set_user_data (opj_stream_t* p_stream, void * p_data);
1161 * Sets the length of the user data for the stream.
1162 * @param p_stream the stream to modify
1163 * @param data_length length of the user_data.
1165 OPJ_API void OPJ_CALLCONV opj_stream_set_user_data_length(opj_stream_t* p_stream, OPJ_UINT64 data_length);
1170 * Sets the stream to be a file stream. The FILE must have been open previously.
1171 * @param p_file the file stream to operate on
1172 * @param p_is_read_stream whether the stream is a read stream (true) or not (false)
1174 OPJ_API opj_stream_t* OPJ_CALLCONV opj_stream_create_default_file_stream (FILE * p_file, opj_bool p_is_read_stream);
1175 OPJ_API opj_stream_t* OPJ_CALLCONV opj_stream_create_file_stream (FILE * p_file, OPJ_SIZE_T p_buffer_size, opj_bool p_is_read_stream);
1180 ==========================================================
1181 event manager functions definitions
1182 ==========================================================
1187 DEPRECATED( OPJ_API opj_event_mgr_t* OPJ_CALLCONV opj_set_event_mgr(opj_common_ptr cinfo, opj_event_mgr_t *event_mgr, void *context));
1190 * Initialize a default event handler. This function set the output of message event to be stderr for warning and error output
1191 * and stdout for info output in the verbose mode. In the case of the non-verbose mode only the error message are displayed.
1192 * You can initialize your own event handler struct when you fill the field of the event structure. If you provide a null
1193 * structure to the opj_setup_decoder function, no output will be displayed.
1195 * @param p_manager a opj_event_mgr structure which will be pass to the codec.
1198 OPJ_API void OPJ_CALLCONV opj_initialize_default_event_handler(opj_event_mgr_t * p_manager, opj_bool verbose);
1202 ==========================================================
1203 codec functions definitions
1204 ==========================================================
1208 Creates a J2K/JPT/JP2 decompression structure
1209 @param format Decoder to select
1210 @return Returns a handle to a decompressor if successful, returns NULL otherwise
1212 DEPRECATED( OPJ_API opj_dinfo_t* OPJ_CALLCONV opj_create_decompress(OPJ_CODEC_FORMAT format) );
1215 * Creates a J2K/JP2 decompression structure
1216 * @param format Decoder to select
1218 * @return Returns a handle to a decompressor if successful, returns NULL otherwise
1220 OPJ_API opj_codec_t* OPJ_CALLCONV opj_create_decompress_v2(OPJ_CODEC_FORMAT format);
1223 Destroy a decompressor handle
1224 @param dinfo decompressor handle to destroy
1226 DEPRECATED( OPJ_API void OPJ_CALLCONV opj_destroy_decompress(opj_dinfo_t *dinfo) );
1229 * Read after the codestream if necessary
1231 OPJ_API opj_bool OPJ_CALLCONV opj_end_decompress ( opj_codec_t *p_codec,
1232 opj_stream_t *p_cio);
1236 Set decoding parameters to default values
1237 @param parameters Decompression parameters
1239 OPJ_API void OPJ_CALLCONV opj_set_default_decoder_parameters(opj_dparameters_t *parameters);
1242 Setup the decoder decoding parameters using user parameters.
1243 Decoding parameters are returned in j2k->cp.
1244 @param dinfo decompressor handle
1245 @param parameters decompression parameters
1247 DEPRECATED( OPJ_API void OPJ_CALLCONV opj_setup_decoder(opj_dinfo_t *dinfo, opj_dparameters_t *parameters) );
1251 * Setup the decoder with decompression parameters provided by the user and with the message handler
1252 * provided by the user.
1254 * @param dinfo decompressor handlers
1255 * @param parameters decompression parameters
1256 * @param event_mgr message handler
1258 * @return true if the decoder is correctly set
1260 OPJ_API opj_bool OPJ_CALLCONV opj_setup_decoder_v2( opj_codec_t *p_info,
1261 opj_dparameters_t *parameters,
1262 opj_event_mgr_t* event_mgr);
1265 * Decodes an image header.
1267 * @param p_cio the jpeg2000 stream.
1268 * @param p_codec the jpeg2000 codec to read.
1269 * @param p_image the image structure initialized with the characteristics of encoded image.
1271 * @return true if the main header of the codestream and the JP2 header is correctly read.
1273 OPJ_API opj_bool OPJ_CALLCONV opj_read_header ( opj_stream_t *p_cio,
1274 opj_codec_t *p_codec,
1275 opj_image_t **p_image);
1278 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
1280 * @param p_codec the jpeg2000 codec.
1281 * @param p_start_x the left position of the rectangle to decode (in image coordinates).
1282 * @param p_end_x the right position of the rectangle to decode (in image coordinates).
1283 * @param p_start_y the up position of the rectangle to decode (in image coordinates).
1284 * @param p_end_y the bottom position of the rectangle to decode (in image coordinates).
1286 * @return true if the area could be set.
1288 OPJ_API opj_bool OPJ_CALLCONV opj_set_decode_area( opj_codec_t *p_codec,
1289 opj_image_t* p_image,
1290 OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
1291 OPJ_INT32 p_end_x, OPJ_INT32 p_end_y );
1294 Decode an image from a JPEG-2000 codestream
1295 @param dinfo decompressor handle
1296 @param cio Input buffer stream
1297 @return Returns a decoded image if successful, returns NULL otherwise
1299 DEPRECATED( OPJ_API opj_image_t* OPJ_CALLCONV opj_decode(opj_dinfo_t *dinfo, opj_cio_t *cio) );
1302 * Decode an image from a JPEG-2000 codestream
1303 * @param p_decompressor decompressor handle
1304 * @param cio Input buffer stream
1305 * @param p_image the decoded image
1306 * @return Returns a true on success, otherwise false
1308 OPJ_API opj_bool OPJ_CALLCONV opj_decode_v2(opj_codec_t *p_decompressor,
1310 opj_image_t *p_image);
1314 * Get the decoded tile from the codec
1315 * @param p_codec the jpeg2000 codec.
1316 * @param p_cio input streamm
1317 * @param p_image output image
1318 * @param tile_index index of the tile which will be decode
1320 * @return opj_true if all is ok.
1322 OPJ_API opj_bool OPJ_CALLCONV opj_get_decoded_tile( opj_codec_t *p_codec,
1323 opj_stream_t *p_cio,
1324 opj_image_t *p_image,
1325 OPJ_UINT32 tile_index);
1329 * Set the resolution factor of the decoded image
1330 * @param p_codec the jpeg2000 codec.
1331 * @param res_factor resolution factor to set
1333 * @return opj_true if all is ok.
1335 OPJ_API opj_bool OPJ_CALLCONV opj_set_decoded_resolution_factor(opj_codec_t *p_codec, OPJ_UINT32 res_factor);
1340 * Reads a tile header. This function is compulsory and allows one to know the size of the tile thta will be decoded.
1341 * The user may need to refer to the image got by opj_read_header to understand the size being taken by the tile.
1343 * @param p_codec the jpeg2000 codec.
1344 * @param p_tile_index pointer to a value that will hold the index of the tile being decoded, in case of success.
1345 * @param p_data_size pointer to a value that will hold the maximum size of the decoded data, in case of success. In case
1346 * of truncated codestreams, the actual number of bytes decoded may be lower. The computation of the size is the same
1347 * as depicted in opj_write_tile.
1348 * @param p_tile_x0 pointer to a value that will hold the x0 pos of the tile (in the image).
1349 * @param p_tile_y0 pointer to a value that will hold the y0 pos of the tile (in the image).
1350 * @param p_tile_x1 pointer to a value that will hold the x1 pos of the tile (in the image).
1351 * @param p_tile_y1 pointer to a value that will hold the y1 pos of the tile (in the image).
1352 * @param p_nb_comps pointer to a value that will hold the number of components in the tile.
1353 * @param p_should_go_on pointer to a boolean that will hold the fact that the decoding should go on. In case the
1354 * codestream is over at the time of the call, the value will be set to false. The user should then stop
1356 * @param p_stream the stream to decode.
1357 * @return true if the tile header could be decoded. In case the decoding should end, the returned value is still true.
1358 * returning false may be the result of a shortage of memory or an internal error.
1360 OPJ_API opj_bool OPJ_CALLCONV opj_read_tile_header( opj_codec_t *p_codec,
1361 opj_stream_t * p_stream,
1362 OPJ_UINT32 * p_tile_index,
1363 OPJ_UINT32 * p_data_size,
1364 OPJ_INT32 * p_tile_x0, OPJ_INT32 * p_tile_y0,
1365 OPJ_INT32 * p_tile_x1, OPJ_INT32 * p_tile_y1,
1366 OPJ_UINT32 * p_nb_comps,
1367 opj_bool * p_should_go_on );
1371 * Reads a tile data. This function is compulsory and allows one to decode tile data. opj_read_tile_header should be called before.
1372 * The user may need to refer to the image got by opj_read_header to understand the size being taken by the tile.
1374 * @param p_codec the jpeg2000 codec.
1375 * @param p_tile_index the index of the tile being decoded, this should be the value set by opj_read_tile_header.
1376 * @param p_data pointer to a memory block that will hold the decoded data.
1377 * @param p_data_size size of p_data. p_data_size should be bigger or equal to the value set by opj_read_tile_header.
1378 * @param p_stream the stream to decode.
1380 * @return true if the data could be decoded.
1382 OPJ_API opj_bool OPJ_CALLCONV opj_decode_tile_data( opj_codec_t *p_codec,
1383 OPJ_UINT32 p_tile_index,
1385 OPJ_UINT32 p_data_size,
1386 opj_stream_t *p_stream );
1390 Decode an image from a JPEG-2000 codestream and extract the codestream information
1391 @param dinfo decompressor handle
1392 @param cio Input buffer stream
1393 @param cstr_info Codestream information structure if needed afterwards, NULL otherwise
1394 @return Returns a decoded image if successful, returns NULL otherwise
1396 DEPRECATED( OPJ_API opj_image_t* OPJ_CALLCONV opj_decode_with_info(opj_dinfo_t *dinfo, opj_cio_t *cio, opj_codestream_info_t *cstr_info) );
1398 /* COMPRESSION FUNCTIONS*/
1401 Creates a J2K/JP2 compression structure
1402 @param format Coder to select
1403 @return Returns a handle to a compressor if successful, returns NULL otherwise
1405 OPJ_API opj_cinfo_t* OPJ_CALLCONV opj_create_compress(OPJ_CODEC_FORMAT format);
1408 Creates a J2K/JP2 compression structure
1409 @param format Coder to select
1410 @return Returns a handle to a compressor if successful, returns NULL otherwise
1412 OPJ_API opj_codec_t* OPJ_CALLCONV opj_create_compress_v2(OPJ_CODEC_FORMAT format);
1416 Destroy a compressor handle
1417 @param cinfo compressor handle to destroy
1419 OPJ_API void OPJ_CALLCONV opj_destroy_compress(opj_cinfo_t *cinfo);
1421 Set encoding parameters to default values, that means :
1425 <li>Size of precinct : 2^15 x 2^15 (means 1 precinct)
1426 <li>Size of code-block : 64 x 64
1427 <li>Number of resolutions: 6
1428 <li>No SOP marker in the codestream
1429 <li>No EPH marker in the codestream
1430 <li>No sub-sampling in x or y direction
1431 <li>No mode switch activated
1432 <li>Progression order: LRCP
1434 <li>No ROI upshifted
1435 <li>No offset of the origin of the image
1436 <li>No offset of the origin of the tiles
1437 <li>Reversible DWT 5-3
1439 @param parameters Compression parameters
1441 OPJ_API void OPJ_CALLCONV opj_set_default_encoder_parameters(opj_cparameters_t *parameters);
1443 Setup the encoder parameters using the current image and using user parameters.
1444 @param cinfo Compressor handle
1445 @param parameters Compression parameters
1446 @param image Input filled image
1448 OPJ_API void OPJ_CALLCONV opj_setup_encoder(opj_cinfo_t *cinfo, opj_cparameters_t *parameters, opj_image_t *image);
1451 Setup the encoder parameters using the current image and using user parameters.
1452 @param cinfo Compressor handle
1453 @param parameters Compression parameters
1454 @param image Input filled image
1456 OPJ_API opj_bool OPJ_CALLCONV opj_setup_encoder_v2(opj_codec_t *cinfo, opj_cparameters_t *parameters, opj_image_t *image);
1459 opj_bool OPJ_CALLCONV opj_start_compress ( opj_codec_t *p_codec,
1460 opj_image_t * p_image,
1461 opj_stream_t *p_cio);
1463 opj_bool OPJ_CALLCONV opj_end_compress (opj_codec_t *p_codec,opj_stream_t *p_cio);
1466 Encode an image into a JPEG-2000 codestream
1467 @param cinfo compressor handle
1468 @param cio Output buffer stream
1469 @param image Image to encode
1470 @param index Depreacted -> Set to NULL. To extract index, used opj_encode_wci()
1471 @return Returns true if successful, returns false otherwise
1473 OPJ_API opj_bool OPJ_CALLCONV opj_encode_v2(opj_codec_t *cinfo, opj_stream_t * cio);
1476 Encode an image into a JPEG-2000 codestream
1477 3@param cinfo compressor handle
1478 @param cio Output buffer stream
1479 @param image Image to encode
1480 @param index Depreacted -> Set to NULL. To extract index, used opj_encode_wci()
1481 @return Returns true if successful, returns false otherwise
1483 OPJ_API opj_bool OPJ_CALLCONV opj_encode(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, char *index);
1485 Encode an image into a JPEG-2000 codestream and extract the codestream information
1486 @param cinfo compressor handle
1487 @param cio Output buffer stream
1488 @param image Image to encode
1489 @param cstr_info Codestream information structure if needed afterwards, NULL otherwise
1490 @return Returns true if successful, returns false otherwise
1492 OPJ_API opj_bool OPJ_CALLCONV opj_encode_with_info(opj_cinfo_t *cinfo, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info);
1498 Destroy Codestream information after compression or decompression
1499 @param cstr_info Codestream information structure
1501 OPJ_API void OPJ_CALLCONV opj_destroy_cstr_info(opj_codestream_info_t *cstr_info);
1503 OPJ_API void OPJ_CALLCONV opj_destroy_cstr_info_v2(opj_codestream_info_v2_t **cstr_info);
1508 * Destroy a decompressor handle
1510 * @param p_codec decompressor handle to destroy
1512 OPJ_API void OPJ_CALLCONV opj_destroy_codec(opj_codec_t * p_codec);
1518 ==========================================================
1519 codec output functions definitions
1520 ==========================================================
1524 * Dump the codec information into the output stream
1526 * @param p_codec the jpeg2000 codec.
1527 * @param info_flag type of information dump.
1528 * @param output_stream output stream where dump the informations get from the codec.
1531 OPJ_API void OPJ_CALLCONV opj_dump_codec( opj_codec_t *p_codec,
1532 OPJ_INT32 info_flag,
1533 FILE* output_stream);
1536 * Get the codestream information from the codec
1538 * @param p_codec the jpeg2000 codec.
1540 * @return a pointer to a codestream information structure.
1543 OPJ_API opj_codestream_info_v2_t* OPJ_CALLCONV opj_get_cstr_info(opj_codec_t *p_codec);
1546 * Get the codestream index from the codec
1548 * @param p_codec the jpeg2000 codec.
1550 * @return a pointer to a codestream index structure.
1553 OPJ_API opj_codestream_index_t * OPJ_CALLCONV opj_get_cstr_index(opj_codec_t *p_codec);
1555 OPJ_API void OPJ_CALLCONV opj_destroy_cstr_index(opj_codestream_index_t **p_cstr_index);
1559 * Get the JP2 file information from the codec FIXME
1561 * @param p_codec the jpeg2000 codec.
1563 * @return a pointer to a JP2 metadata structure.
1566 OPJ_API opj_jp2_metadata_t* OPJ_CALLCONV opj_get_jp2_metadata(opj_codec_t *p_codec);
1569 * Get the JP2 file index from the codec FIXME
1571 * @param p_codec the jpeg2000 codec.
1573 * @return a pointer to a JP2 index structure.
1576 OPJ_API opj_jp2_index_t* OPJ_CALLCONV opj_get_jp2_index(opj_codec_t *p_codec);
1580 ==========================================================
1582 ==========================================================
1586 * Sets the MCT matrix to use.
1588 * @param parameters the parameters to change.
1589 * @param pEncodingMatrix the encoding matrix.
1590 * @param p_dc_shift the dc shift coefficients to use.
1591 * @param pNbComp the number of components of the image.
1593 * @return true if the parameters could be set.
1595 OPJ_API opj_bool OPJ_CALLCONV opj_set_MCT( opj_cparameters_t *parameters,
1596 OPJ_FLOAT32 * pEncodingMatrix,
1597 OPJ_INT32 * p_dc_shift,
1598 OPJ_UINT32 pNbComp);
1606 #endif /* OPENJPEG_H */