2 * The copyright in this software is being made available under the 2-clauses
3 * BSD License, included below. This software may be subject to other third
4 * party and contributor rights, including patent rights, and no such rights
5 * are granted under this license.
7 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
8 * Copyright (c) 2002-2014, Professor Benoit Macq
9 * Copyright (c) 2001-2003, David Janssens
10 * Copyright (c) 2002-2003, Yannick Verschueren
11 * Copyright (c) 2003-2007, Francois-Olivier Devaux
12 * Copyright (c) 2003-2014, Antonin Descampe
13 * Copyright (c) 2005, Herve Drolon, FreeImage Team
14 * Copyright (c) 2006-2007, Parvatha Elangovan
15 * Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
16 * Copyright (c) 2011-2012, Centre National d'Etudes Spatiales (CNES), France
17 * Copyright (c) 2012, CS Systemes d'Information, France
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46 @brief The JPEG-2000 Codestream Reader/Writer (J2K)
48 The functions in J2K.C have for goal to read/write the several parts of the codestream: markers and data.
51 /** @defgroup J2K J2K - JPEG-2000 codestream reader/writer */
54 #define J2K_CP_CSTY_PRT 0x01
55 #define J2K_CP_CSTY_SOP 0x02
56 #define J2K_CP_CSTY_EPH 0x04
57 #define J2K_CCP_CSTY_PRT 0x01
58 #define J2K_CCP_CBLKSTY_LAZY 0x01 /**< Selective arithmetic coding bypass */
59 #define J2K_CCP_CBLKSTY_RESET 0x02 /**< Reset context probabilities on coding pass boundaries */
60 #define J2K_CCP_CBLKSTY_TERMALL 0x04 /**< Termination on each coding pass */
61 #define J2K_CCP_CBLKSTY_VSC 0x08 /**< Vertically stripe causal context */
62 #define J2K_CCP_CBLKSTY_PTERM 0x10 /**< Predictable termination */
63 #define J2K_CCP_CBLKSTY_SEGSYM 0x20 /**< Segmentation symbols are used */
64 #define J2K_CCP_QNTSTY_NOQNT 0
65 #define J2K_CCP_QNTSTY_SIQNT 1
66 #define J2K_CCP_QNTSTY_SEQNT 2
68 /* ----------------------------------------------------------------------- */
70 #define J2K_MS_SOC 0xff4f /**< SOC marker value */
71 #define J2K_MS_SOT 0xff90 /**< SOT marker value */
72 #define J2K_MS_SOD 0xff93 /**< SOD marker value */
73 #define J2K_MS_EOC 0xffd9 /**< EOC marker value */
74 #define J2K_MS_SIZ 0xff51 /**< SIZ marker value */
75 #define J2K_MS_COD 0xff52 /**< COD marker value */
76 #define J2K_MS_COC 0xff53 /**< COC marker value */
77 #define J2K_MS_RGN 0xff5e /**< RGN marker value */
78 #define J2K_MS_QCD 0xff5c /**< QCD marker value */
79 #define J2K_MS_QCC 0xff5d /**< QCC marker value */
80 #define J2K_MS_POC 0xff5f /**< POC marker value */
81 #define J2K_MS_TLM 0xff55 /**< TLM marker value */
82 #define J2K_MS_PLM 0xff57 /**< PLM marker value */
83 #define J2K_MS_PLT 0xff58 /**< PLT marker value */
84 #define J2K_MS_PPM 0xff60 /**< PPM marker value */
85 #define J2K_MS_PPT 0xff61 /**< PPT marker value */
86 #define J2K_MS_SOP 0xff91 /**< SOP marker value */
87 #define J2K_MS_EPH 0xff92 /**< EPH marker value */
88 #define J2K_MS_CRG 0xff63 /**< CRG marker value */
89 #define J2K_MS_COM 0xff64 /**< COM marker value */
90 #define J2K_MS_CBD 0xff78 /**< CBD marker value */
91 #define J2K_MS_MCC 0xff75 /**< MCC marker value */
92 #define J2K_MS_MCT 0xff74 /**< MCT marker value */
93 #define J2K_MS_MCO 0xff77 /**< MCO marker value */
95 #define J2K_MS_UNK 0 /**< UNKNOWN marker value */
99 #define J2K_MS_EPC 0xff68 /**< EPC marker value (Part 11: JPEG 2000 for Wireless) */
100 #define J2K_MS_EPB 0xff66 /**< EPB marker value (Part 11: JPEG 2000 for Wireless) */
101 #define J2K_MS_ESD 0xff67 /**< ESD marker value (Part 11: JPEG 2000 for Wireless) */
102 #define J2K_MS_RED 0xff69 /**< RED marker value (Part 11: JPEG 2000 for Wireless) */
103 #endif /* USE_JPWL */
105 #define J2K_MS_SEC 0xff65 /**< SEC marker value (Part 8: Secure JPEG 2000) */
106 #define J2K_MS_INSEC 0xff94 /**< INSEC marker value (Part 8: Secure JPEG 2000) */
107 #endif /* USE_JPSEC */
110 /* ----------------------------------------------------------------------- */
113 * Values that specify the status of the decoding process when decoding the main header.
114 * These values may be combined with a | operator.
116 typedef enum J2K_STATUS {
117 J2K_STATE_NONE = 0x0000, /**< a SOC marker is expected */
118 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
119 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
120 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
121 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
122 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
123 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
124 J2K_STATE_NEOC = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
126 J2K_STATE_EOC = 0x0100, /**< the decoding process has encountered the EOC marker */
127 J2K_STATE_ERR = 0x8000 /**< the decoding process has encountered an error (FIXME warning V1 = 0x0080)*/
131 * Type of elements storing in the MCT data
133 typedef enum MCT_ELEMENT_TYPE {
134 MCT_TYPE_INT16 = 0, /** MCT data is stored as signed shorts*/
135 MCT_TYPE_INT32 = 1, /** MCT data is stored as signed integers*/
136 MCT_TYPE_FLOAT = 2, /** MCT data is stored as floats*/
137 MCT_TYPE_DOUBLE = 3 /** MCT data is stored as doubles*/
138 } J2K_MCT_ELEMENT_TYPE;
143 typedef enum MCT_ARRAY_TYPE {
144 MCT_TYPE_DEPENDENCY = 0,
145 MCT_TYPE_DECORRELATION = 1,
147 } J2K_MCT_ARRAY_TYPE;
149 /* ----------------------------------------------------------------------- */
154 typedef enum T2_MODE {
155 THRESH_CALC = 0, /** Function called in Rate allocation process*/
156 FINAL_PASS = 1 /** Function called in Tier 2 process*/
160 * Quantization stepsize
162 typedef struct opj_stepsize {
170 Tile-component coding parameters
172 typedef struct opj_tccp {
175 /** number of resolutions */
176 OPJ_UINT32 numresolutions;
177 /** code-blocks width */
179 /** code-blocks height */
181 /** code-block coding style */
183 /** discrete wavelet transform identifier */
185 /** quantisation style */
187 /** stepsizes used for quantization */
188 opj_stepsize_t stepsizes[OPJ_J2K_MAXBANDS];
189 /** number of guard bits */
191 /** Region Of Interest shift */
193 /** precinct width */
194 OPJ_UINT32 prcw[OPJ_J2K_MAXRLVLS];
195 /** precinct height */
196 OPJ_UINT32 prch[OPJ_J2K_MAXRLVLS];
197 /** the dc_level_shift **/
198 OPJ_INT32 m_dc_level_shift;
207 typedef struct opj_mct_data {
208 J2K_MCT_ELEMENT_TYPE m_element_type;
209 J2K_MCT_ARRAY_TYPE m_array_type;
212 OPJ_UINT32 m_data_size;
219 typedef struct opj_simple_mcc_decorrelation_data {
221 OPJ_UINT32 m_nb_comps;
222 opj_mct_data_t * m_decorrelation_array;
223 opj_mct_data_t * m_offset_array;
224 OPJ_BITFIELD m_is_irreversible : 1;
226 opj_simple_mcc_decorrelation_data_t;
228 typedef struct opj_ppx_struct {
229 OPJ_BYTE* m_data; /* m_data == NULL => Zppx not read yet */
230 OPJ_UINT32 m_data_size;
234 Tile coding parameters :
235 this structure is used to store coding/decoding parameters common to all
236 tiles (information like COD, COC in main header)
238 typedef struct opj_tcp {
241 /** progression order */
243 /** number of layers */
244 OPJ_UINT32 numlayers;
245 OPJ_UINT32 num_layers_to_decode;
246 /** multi-component transform identifier */
248 /** rates of layers */
249 OPJ_FLOAT32 rates[100];
250 /** number of progression order changes */
252 /** progression order changes */
255 /** number of ppt markers (reserved size) */
256 OPJ_UINT32 ppt_markers_count;
257 /** ppt markers data (table indexed by Zppt) */
258 opj_ppx* ppt_markers;
260 /** packet header store there for future use in t2_decode_packet */
262 /** used to keep a track of the allocated memory */
263 OPJ_BYTE *ppt_buffer;
264 /** Number of bytes stored inside ppt_data*/
265 OPJ_UINT32 ppt_data_size;
266 /** size of ppt_data*/
268 /** add fixed_quality */
269 OPJ_FLOAT32 distoratio[100];
270 /** tile-component coding parameters */
272 /** current tile part number or -1 if first time into this tile */
273 OPJ_INT32 m_current_tile_part_number;
274 /** number of tile parts for the tile. */
275 OPJ_UINT32 m_nb_tile_parts;
276 /** data for the tile */
279 OPJ_UINT32 m_data_size;
280 /** encoding norms */
281 OPJ_FLOAT64 * mct_norms;
282 /** the mct decoding matrix */
283 OPJ_FLOAT32 * m_mct_decoding_matrix;
284 /** the mct coding matrix */
285 OPJ_FLOAT32 * m_mct_coding_matrix;
287 opj_mct_data_t * m_mct_records;
288 /** the number of mct records. */
289 OPJ_UINT32 m_nb_mct_records;
290 /** the max number of mct records. */
291 OPJ_UINT32 m_nb_max_mct_records;
293 opj_simple_mcc_decorrelation_data_t * m_mcc_records;
294 /** the number of mct records. */
295 OPJ_UINT32 m_nb_mcc_records;
296 /** the max number of mct records. */
297 OPJ_UINT32 m_nb_max_mcc_records;
300 /***** FLAGS *******/
301 /** If cod == 1 --> there was a COD marker for the present tile */
302 OPJ_BITFIELD cod : 1;
303 /** If ppt == 1 --> there was a PPT marker for the present tile */
304 OPJ_BITFIELD ppt : 1;
305 /** indicates if a POC marker has been used O:NO, 1:YES */
306 OPJ_BITFIELD POC : 1;
312 typedef struct opj_encoding_param {
313 /** Maximum rate for each component. If == 0, component size limitation is not considered */
314 OPJ_UINT32 m_max_comp_size;
315 /** Position of tile part flag in progression order*/
318 OPJ_INT32 *m_matrice;
319 /** Flag determining tile part generation*/
321 /** allocation by rate/distortion */
322 OPJ_BITFIELD m_disto_alloc : 1;
323 /** allocation by fixed layer */
324 OPJ_BITFIELD m_fixed_alloc : 1;
325 /** add fixed_quality */
326 OPJ_BITFIELD m_fixed_quality : 1;
327 /** Enabling Tile part generation*/
328 OPJ_BITFIELD m_tp_on : 1;
330 opj_encoding_param_t;
332 typedef struct opj_decoding_param {
333 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
335 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
338 opj_decoding_param_t;
344 typedef struct opj_cp {
345 /** Size of the image in bits*/
350 OPJ_UINT32 tx0; /* MSD see norm */
352 OPJ_UINT32 ty0; /* MSD see norm */
359 /** number of tiles in width */
361 /** number of tiles in height */
364 /** number of ppm markers (reserved size) */
365 OPJ_UINT32 ppm_markers_count;
366 /** ppm markers data (table indexed by Zppm) */
367 opj_ppx* ppm_markers;
369 /** packet header store there for future use in t2_decode_packet */
371 /** size of the ppm_data*/
373 /** size of the ppm_data*/
374 OPJ_UINT32 ppm_data_read;
376 OPJ_BYTE *ppm_data_current;
378 /** packet header storage original buffer */
379 OPJ_BYTE *ppm_buffer;
380 /** pointer remaining on the first byte of the first header if ppm is used */
381 OPJ_BYTE *ppm_data_first;
382 /** Number of bytes actually stored inside the ppm_data */
383 OPJ_UINT32 ppm_data_size;
384 /** use in case of multiple marker PPM (number of info already store) */
386 /** use in case of multiple marker PPM (case on non-finished previous info) */
387 OPJ_INT32 ppm_previous;
389 /** tile coding parameters */
393 opj_decoding_param_t m_dec;
394 opj_encoding_param_t m_enc;
401 /** enables writing of EPC in MH, thus activating JPWL */
403 /** enables writing of EPB, in case of activated JPWL */
405 /** enables writing of ESD, in case of activated JPWL */
407 /** enables writing of informative techniques of ESD, in case of activated JPWL */
409 /** enables writing of RED, in case of activated JPWL */
411 /** error protection method for MH (0,1,16,32,37-128) */
413 /** tile number of header protection specification (>=0) */
414 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
415 /** error protection methods for TPHs (0,1,16,32,37-128) */
416 int hprot_TPH[JPWL_MAX_NO_TILESPECS];
417 /** tile number of packet protection specification (>=0) */
418 int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
419 /** packet number of packet protection specification (>=0) */
420 int pprot_packno[JPWL_MAX_NO_PACKSPECS];
421 /** error protection methods for packets (0,1,16,32,37-128) */
422 int pprot[JPWL_MAX_NO_PACKSPECS];
423 /** enables writing of ESD, (0/2/4 bytes) */
425 /** sensitivity addressing size (0=auto/2/4 bytes) */
427 /** sensitivity range (0-3) */
429 /** sensitivity method for MH (-1,0-7) */
431 /** tile number of sensitivity specification (>=0) */
432 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
433 /** sensitivity methods for TPHs (-1,0-7) */
434 int sens_TPH[JPWL_MAX_NO_TILESPECS];
435 /** enables JPWL correction at the decoder */
437 /** expected number of components at the decoder */
439 /** maximum number of tiles at the decoder */
440 OPJ_UINT32 max_tiles;
441 #endif /* USE_JPWL */
443 /******** FLAGS *********/
444 /** if ppm == 1 --> there was a PPM marker*/
445 OPJ_BITFIELD ppm : 1;
446 /** tells if the parameter is a coding or decoding one */
447 OPJ_BITFIELD m_is_decoder : 1;
452 typedef struct opj_j2k_dec {
453 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
456 * store decoding parameters common to all tiles (information like COD, COC in main header)
458 opj_tcp_t *m_default_tcp;
459 OPJ_BYTE *m_header_data;
460 OPJ_UINT32 m_header_data_size;
461 /** to tell the tile part length */
462 OPJ_UINT32 m_sot_length;
463 /** Only tiles index in the correct range will be decoded.*/
464 OPJ_UINT32 m_start_tile_x;
465 OPJ_UINT32 m_start_tile_y;
466 OPJ_UINT32 m_end_tile_x;
467 OPJ_UINT32 m_end_tile_y;
469 /** Index of the tile to decode (used in get_tile) */
470 OPJ_INT32 m_tile_ind_to_dec;
471 /** Position of the last SOT marker read */
472 OPJ_OFF_T m_last_sot_read_pos;
475 * Indicate that the current tile-part is assume as the last tile part of the codestream.
476 * It is useful in the case of PSot is equal to zero. The sot length will be compute in the
477 * SOD reader function. FIXME NOT USED for the moment
479 OPJ_BOOL m_last_tile_part;
480 /** to tell that a tile can be decoded. */
481 OPJ_BITFIELD m_can_decode : 1;
482 OPJ_BITFIELD m_discard_tiles : 1;
483 OPJ_BITFIELD m_skip_data : 1;
484 /** TNsot correction : see issue 254 **/
485 OPJ_BITFIELD m_nb_tile_parts_correction_checked : 1;
486 OPJ_BITFIELD m_nb_tile_parts_correction : 1;
490 typedef struct opj_j2k_enc {
491 /** Tile part number, regardless of poc, for each new poc, tp is reset to 1*/
492 OPJ_UINT32 m_current_poc_tile_part_number; /* tp_num */
494 /** 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.*/
495 OPJ_UINT32 m_current_tile_part_number; /*cur_tp_num */
498 locate the start position of the TLM marker
499 after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
501 OPJ_OFF_T m_tlm_start;
503 * Stores the sizes of the tlm.
505 OPJ_BYTE * m_tlm_sot_offsets_buffer;
507 * The current offset of the tlm buffer.
509 OPJ_BYTE * m_tlm_sot_offsets_current;
511 /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
512 /** used in TLMmarker*/
513 OPJ_UINT32 m_total_tile_parts; /* totnum_tp */
515 /* encoded data for a tile */
516 OPJ_BYTE * m_encoded_tile_data;
518 /* size of the encoded_data */
519 OPJ_UINT32 m_encoded_tile_size;
521 /* encoded data for a tile */
522 OPJ_BYTE * m_header_tile_data;
524 /* size of the encoded_data */
525 OPJ_UINT32 m_header_tile_data_size;
534 JPEG-2000 codestream reader/writer
536 typedef struct opj_j2k {
537 /* J2K codestream is decoded*/
538 OPJ_BOOL m_is_decoder;
542 opj_j2k_dec_t m_decoder;
543 opj_j2k_enc_t m_encoder;
547 /** pointer to the internal/private encoded / decoded image */
548 opj_image_t* m_private_image;
550 /* pointer to the output image (decoded)*/
551 opj_image_t* m_output_image;
553 /** Coding parameters */
556 /** the list of procedures to exec **/
557 opj_procedure_list_t * m_procedure_list;
559 /** the list of validation procedures to follow to make sure the code is valid **/
560 opj_procedure_list_t * m_validation_list;
562 /** helper used to write the index file */
563 opj_codestream_index_t *cstr_index;
565 /** number of the tile currently concern by coding/decoding */
566 OPJ_UINT32 m_current_tile_number;
568 /** the current tile coder/decoder **/
569 struct opj_tcd * m_tcd;
571 /** Number of threads to use */
575 opj_thread_pool_t* m_tp;
582 /** @name Exported functions */
584 /* ----------------------------------------------------------------------- */
587 Setup the decoder decoding parameters using user parameters.
588 Decoding parameters are returned in j2k->cp.
589 @param j2k J2K decompressor handle
590 @param parameters decompression parameters
592 void opj_j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
594 OPJ_BOOL opj_j2k_set_threads(opj_j2k_t *j2k, OPJ_UINT32 num_threads);
597 * Creates a J2K compression structure
599 * @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
601 opj_j2k_t* opj_j2k_create_compress(void);
604 OPJ_BOOL opj_j2k_setup_encoder(opj_j2k_t *p_j2k,
605 opj_cparameters_t *parameters,
607 opj_event_mgr_t * p_manager);
610 Converts an enum type progression order to string type
612 char *opj_j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
614 /* ----------------------------------------------------------------------- */
620 * Ends the decompression procedures and possibiliy add data to be read after the
623 OPJ_BOOL opj_j2k_end_decompress(opj_j2k_t *j2k,
624 opj_stream_private_t *p_stream,
625 opj_event_mgr_t * p_manager);
628 * Reads a jpeg2000 codestream header structure.
630 * @param p_stream the stream to read data from.
631 * @param p_j2k the jpeg2000 codec.
632 * @param p_image FIXME DOC
633 * @param p_manager the user event manager.
635 * @return true if the box is valid.
637 OPJ_BOOL opj_j2k_read_header(opj_stream_private_t *p_stream,
639 opj_image_t** p_image,
640 opj_event_mgr_t* p_manager);
644 * Destroys a jpeg2000 codec.
646 * @param p_j2k the jpeg20000 structure to destroy.
648 void opj_j2k_destroy(opj_j2k_t *p_j2k);
651 * Destroys a codestream index structure.
653 * @param p_cstr_ind the codestream index parameter to destroy.
655 void j2k_destroy_cstr_index(opj_codestream_index_t *p_cstr_ind);
659 * @param p_j2k the jpeg2000 codec.
660 * @param p_tile_index
661 * @param p_data FIXME DOC
662 * @param p_data_size FIXME DOC
663 * @param p_stream the stream to write data to.
664 * @param p_manager the user event manager.
666 OPJ_BOOL opj_j2k_decode_tile(opj_j2k_t * p_j2k,
667 OPJ_UINT32 p_tile_index,
669 OPJ_UINT32 p_data_size,
670 opj_stream_private_t *p_stream,
671 opj_event_mgr_t * p_manager);
674 * Reads a tile header.
675 * @param p_j2k the jpeg2000 codec.
676 * @param p_tile_index FIXME DOC
677 * @param p_data_size FIXME DOC
678 * @param p_tile_x0 FIXME DOC
679 * @param p_tile_y0 FIXME DOC
680 * @param p_tile_x1 FIXME DOC
681 * @param p_tile_y1 FIXME DOC
682 * @param p_nb_comps FIXME DOC
683 * @param p_go_on FIXME DOC
684 * @param p_stream the stream to write data to.
685 * @param p_manager the user event manager.
687 OPJ_BOOL opj_j2k_read_tile_header(opj_j2k_t * p_j2k,
688 OPJ_UINT32 * p_tile_index,
689 OPJ_UINT32 * p_data_size,
690 OPJ_INT32 * p_tile_x0,
691 OPJ_INT32 * p_tile_y0,
692 OPJ_INT32 * p_tile_x1,
693 OPJ_INT32 * p_tile_y1,
694 OPJ_UINT32 * p_nb_comps,
696 opj_stream_private_t *p_stream,
697 opj_event_mgr_t * p_manager);
701 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
703 * @param p_j2k the jpeg2000 codec.
704 * @param p_image FIXME DOC
705 * @param p_start_x the left position of the rectangle to decode (in image coordinates).
706 * @param p_start_y the up position of the rectangle to decode (in image coordinates).
707 * @param p_end_x the right position of the rectangle to decode (in image coordinates).
708 * @param p_end_y the bottom position of the rectangle to decode (in image coordinates).
709 * @param p_manager the user event manager
711 * @return true if the area could be set.
713 OPJ_BOOL opj_j2k_set_decode_area(opj_j2k_t *p_j2k,
714 opj_image_t* p_image,
715 OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
716 OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
717 opj_event_mgr_t * p_manager);
720 * Creates a J2K decompression structure.
722 * @return a handle to a J2K decompressor if successful, NULL otherwise.
724 opj_j2k_t* opj_j2k_create_decompress(void);
728 * Dump some elements from the J2K decompression structure .
730 *@param p_j2k the jpeg2000 codec.
731 *@param flag flag to describe what elements are dump.
732 *@param out_stream output stream where dump the elements.
735 void j2k_dump(opj_j2k_t* p_j2k, OPJ_INT32 flag, FILE* out_stream);
740 * Dump an image header structure.
742 *@param image the image header to dump.
743 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
744 *@param out_stream output stream where dump the elements.
746 void j2k_dump_image_header(opj_image_t* image, OPJ_BOOL dev_dump_flag,
750 * Dump a component image header structure.
752 *@param comp the component image header to dump.
753 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
754 *@param out_stream output stream where dump the elements.
756 void j2k_dump_image_comp_header(opj_image_comp_t* comp, OPJ_BOOL dev_dump_flag,
760 * Get the codestream info from a JPEG2000 codec.
762 *@param p_j2k the component image header to dump.
764 *@return the codestream information extract from the jpg2000 codec
766 opj_codestream_info_v2_t* j2k_get_cstr_info(opj_j2k_t* p_j2k);
769 * Get the codestream index from a JPEG2000 codec.
771 *@param p_j2k the component image header to dump.
773 *@return the codestream index extract from the jpg2000 codec
775 opj_codestream_index_t* j2k_get_cstr_index(opj_j2k_t* p_j2k);
778 * Decode an image from a JPEG-2000 codestream
779 * @param j2k J2K decompressor handle
780 * @param p_stream FIXME DOC
781 * @param p_image FIXME DOC
782 * @param p_manager FIXME DOC
785 OPJ_BOOL opj_j2k_decode(opj_j2k_t *j2k,
786 opj_stream_private_t *p_stream,
787 opj_image_t *p_image,
788 opj_event_mgr_t *p_manager);
791 OPJ_BOOL opj_j2k_get_tile(opj_j2k_t *p_j2k,
792 opj_stream_private_t *p_stream,
793 opj_image_t* p_image,
794 opj_event_mgr_t * p_manager,
795 OPJ_UINT32 tile_index);
797 OPJ_BOOL opj_j2k_set_decoded_resolution_factor(opj_j2k_t *p_j2k,
798 OPJ_UINT32 res_factor,
799 opj_event_mgr_t * p_manager);
804 * @param p_j2k the jpeg2000 codec.
805 * @param p_tile_index FIXME DOC
806 * @param p_data FIXME DOC
807 * @param p_data_size FIXME DOC
808 * @param p_stream the stream to write data to.
809 * @param p_manager the user event manager.
811 OPJ_BOOL opj_j2k_write_tile(opj_j2k_t * p_j2k,
812 OPJ_UINT32 p_tile_index,
814 OPJ_UINT32 p_data_size,
815 opj_stream_private_t *p_stream,
816 opj_event_mgr_t * p_manager);
819 * Encodes an image into a JPEG-2000 codestream
821 OPJ_BOOL opj_j2k_encode(opj_j2k_t * p_j2k,
822 opj_stream_private_t *cio,
823 opj_event_mgr_t * p_manager);
826 * Starts a compression scheme, i.e. validates the codec parameters, writes the header.
828 * @param p_j2k the jpeg2000 codec.
829 * @param p_stream the stream object.
830 * @param p_image FIXME DOC
831 * @param p_manager the user event manager.
833 * @return true if the codec is valid.
835 OPJ_BOOL opj_j2k_start_compress(opj_j2k_t *p_j2k,
836 opj_stream_private_t *p_stream,
837 opj_image_t * p_image,
838 opj_event_mgr_t * p_manager);
841 * Ends the compression procedures and possibiliy add data to be read after the
844 OPJ_BOOL opj_j2k_end_compress(opj_j2k_t *p_j2k,
845 opj_stream_private_t *cio,
846 opj_event_mgr_t * p_manager);
848 OPJ_BOOL opj_j2k_setup_mct_encoding(opj_tcp_t * p_tcp, opj_image_t * p_image);