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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22 * modification, are permitted provided that the following conditions
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25 * notice, this list of conditions and the following disclaimer.
26 * 2. Redistributions in binary form must reproduce the above copyright
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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_CBLKSTY_HT 0x40 /**< (high throughput) HT codeblocks */
65 #define J2K_CCP_CBLKSTY_HTMIXED 0x80 /**< MIXED mode HT codeblocks */
66 #define J2K_CCP_QNTSTY_NOQNT 0
67 #define J2K_CCP_QNTSTY_SIQNT 1
68 #define J2K_CCP_QNTSTY_SEQNT 2
70 /* ----------------------------------------------------------------------- */
72 #define J2K_MS_SOC 0xff4f /**< SOC marker value */
73 #define J2K_MS_SOT 0xff90 /**< SOT marker value */
74 #define J2K_MS_SOD 0xff93 /**< SOD marker value */
75 #define J2K_MS_EOC 0xffd9 /**< EOC marker value */
76 #define J2K_MS_CAP 0xff50 /**< CAP marker value */
77 #define J2K_MS_SIZ 0xff51 /**< SIZ marker value */
78 #define J2K_MS_COD 0xff52 /**< COD marker value */
79 #define J2K_MS_COC 0xff53 /**< COC marker value */
80 #define J2K_MS_CPF 0xff59 /**< CPF marker value */
81 #define J2K_MS_RGN 0xff5e /**< RGN marker value */
82 #define J2K_MS_QCD 0xff5c /**< QCD marker value */
83 #define J2K_MS_QCC 0xff5d /**< QCC marker value */
84 #define J2K_MS_POC 0xff5f /**< POC marker value */
85 #define J2K_MS_TLM 0xff55 /**< TLM marker value */
86 #define J2K_MS_PLM 0xff57 /**< PLM marker value */
87 #define J2K_MS_PLT 0xff58 /**< PLT marker value */
88 #define J2K_MS_PPM 0xff60 /**< PPM marker value */
89 #define J2K_MS_PPT 0xff61 /**< PPT marker value */
90 #define J2K_MS_SOP 0xff91 /**< SOP marker value */
91 #define J2K_MS_EPH 0xff92 /**< EPH marker value */
92 #define J2K_MS_CRG 0xff63 /**< CRG marker value */
93 #define J2K_MS_COM 0xff64 /**< COM marker value */
94 #define J2K_MS_CBD 0xff78 /**< CBD marker value */
95 #define J2K_MS_MCC 0xff75 /**< MCC marker value */
96 #define J2K_MS_MCT 0xff74 /**< MCT marker value */
97 #define J2K_MS_MCO 0xff77 /**< MCO marker value */
99 #define J2K_MS_UNK 0 /**< UNKNOWN marker value */
103 #define J2K_MS_EPC 0xff68 /**< EPC marker value (Part 11: JPEG 2000 for Wireless) */
104 #define J2K_MS_EPB 0xff66 /**< EPB marker value (Part 11: JPEG 2000 for Wireless) */
105 #define J2K_MS_ESD 0xff67 /**< ESD marker value (Part 11: JPEG 2000 for Wireless) */
106 #define J2K_MS_RED 0xff69 /**< RED marker value (Part 11: JPEG 2000 for Wireless) */
107 #endif /* USE_JPWL */
109 #define J2K_MS_SEC 0xff65 /**< SEC marker value (Part 8: Secure JPEG 2000) */
110 #define J2K_MS_INSEC 0xff94 /**< INSEC marker value (Part 8: Secure JPEG 2000) */
111 #endif /* USE_JPSEC */
114 #define J2K_MAX_POCS 32 /**< Maximum number of POCs */
116 /* ----------------------------------------------------------------------- */
119 * Values that specify the status of the decoding process when decoding the main header.
120 * These values may be combined with a | operator.
122 typedef enum J2K_STATUS {
123 J2K_STATE_NONE = 0x0000, /**< a SOC marker is expected */
124 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
125 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
126 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
127 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
128 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
129 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
130 J2K_STATE_NEOC = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
131 J2K_STATE_DATA = 0x0080, /**< a tile header has been successfully read and codestream is expected */
133 J2K_STATE_EOC = 0x0100, /**< the decoding process has encountered the EOC marker */
134 J2K_STATE_ERR = 0x8000 /**< the decoding process has encountered an error (FIXME warning V1 = 0x0080)*/
138 * Type of elements storing in the MCT data
140 typedef enum MCT_ELEMENT_TYPE {
141 MCT_TYPE_INT16 = 0, /** MCT data is stored as signed shorts*/
142 MCT_TYPE_INT32 = 1, /** MCT data is stored as signed integers*/
143 MCT_TYPE_FLOAT = 2, /** MCT data is stored as floats*/
144 MCT_TYPE_DOUBLE = 3 /** MCT data is stored as doubles*/
145 } J2K_MCT_ELEMENT_TYPE;
150 typedef enum MCT_ARRAY_TYPE {
151 MCT_TYPE_DEPENDENCY = 0,
152 MCT_TYPE_DECORRELATION = 1,
154 } J2K_MCT_ARRAY_TYPE;
156 /* ----------------------------------------------------------------------- */
161 typedef enum T2_MODE {
162 THRESH_CALC = 0, /** Function called in Rate allocation process*/
163 FINAL_PASS = 1 /** Function called in Tier 2 process*/
167 * Quantization stepsize
169 typedef struct opj_stepsize {
177 Tile-component coding parameters
179 typedef struct opj_tccp {
182 /** number of resolutions */
183 OPJ_UINT32 numresolutions;
184 /** code-blocks width */
186 /** code-blocks height */
188 /** code-block coding style */
190 /** discrete wavelet transform identifier */
192 /** quantisation style */
194 /** stepsizes used for quantization */
195 opj_stepsize_t stepsizes[OPJ_J2K_MAXBANDS];
196 /** number of guard bits */
198 /** Region Of Interest shift */
200 /** precinct width */
201 OPJ_UINT32 prcw[OPJ_J2K_MAXRLVLS];
202 /** precinct height */
203 OPJ_UINT32 prch[OPJ_J2K_MAXRLVLS];
204 /** the dc_level_shift **/
205 OPJ_INT32 m_dc_level_shift;
214 typedef struct opj_mct_data {
215 J2K_MCT_ELEMENT_TYPE m_element_type;
216 J2K_MCT_ARRAY_TYPE m_array_type;
219 OPJ_UINT32 m_data_size;
226 typedef struct opj_simple_mcc_decorrelation_data {
228 OPJ_UINT32 m_nb_comps;
229 opj_mct_data_t * m_decorrelation_array;
230 opj_mct_data_t * m_offset_array;
231 OPJ_BITFIELD m_is_irreversible : 1;
233 opj_simple_mcc_decorrelation_data_t;
235 typedef struct opj_ppx_struct {
236 OPJ_BYTE* m_data; /* m_data == NULL => Zppx not read yet */
237 OPJ_UINT32 m_data_size;
241 Tile coding parameters :
242 this structure is used to store coding/decoding parameters common to all
243 tiles (information like COD, COC in main header)
245 typedef struct opj_tcp {
248 /** progression order */
250 /** number of layers */
251 OPJ_UINT32 numlayers;
252 OPJ_UINT32 num_layers_to_decode;
253 /** multi-component transform identifier */
255 /** rates of layers */
256 OPJ_FLOAT32 rates[100];
257 /** number of progression order changes */
259 /** progression order changes */
260 opj_poc_t pocs[J2K_MAX_POCS];
262 /** number of ppt markers (reserved size) */
263 OPJ_UINT32 ppt_markers_count;
264 /** ppt markers data (table indexed by Zppt) */
265 opj_ppx* ppt_markers;
267 /** packet header store there for future use in t2_decode_packet */
269 /** used to keep a track of the allocated memory */
270 OPJ_BYTE *ppt_buffer;
271 /** Number of bytes stored inside ppt_data*/
272 OPJ_UINT32 ppt_data_size;
273 /** size of ppt_data*/
275 /** add fixed_quality */
276 OPJ_FLOAT32 distoratio[100];
277 /** tile-component coding parameters */
279 /** current tile part number or -1 if first time into this tile */
280 OPJ_INT32 m_current_tile_part_number;
281 /** number of tile parts for the tile. */
282 OPJ_UINT32 m_nb_tile_parts;
283 /** data for the tile */
286 OPJ_UINT32 m_data_size;
287 /** encoding norms */
288 OPJ_FLOAT64 * mct_norms;
289 /** the mct decoding matrix */
290 OPJ_FLOAT32 * m_mct_decoding_matrix;
291 /** the mct coding matrix */
292 OPJ_FLOAT32 * m_mct_coding_matrix;
294 opj_mct_data_t * m_mct_records;
295 /** the number of mct records. */
296 OPJ_UINT32 m_nb_mct_records;
297 /** the max number of mct records. */
298 OPJ_UINT32 m_nb_max_mct_records;
300 opj_simple_mcc_decorrelation_data_t * m_mcc_records;
301 /** the number of mct records. */
302 OPJ_UINT32 m_nb_mcc_records;
303 /** the max number of mct records. */
304 OPJ_UINT32 m_nb_max_mcc_records;
307 /***** FLAGS *******/
308 /** If cod == 1 --> there was a COD marker for the present tile */
309 OPJ_BITFIELD cod : 1;
310 /** If ppt == 1 --> there was a PPT marker for the present tile */
311 OPJ_BITFIELD ppt : 1;
312 /** indicates if a POC marker has been used O:NO, 1:YES */
313 OPJ_BITFIELD POC : 1;
319 typedef struct opj_encoding_param {
320 /** Maximum rate for each component. If == 0, component size limitation is not considered */
321 OPJ_UINT32 m_max_comp_size;
322 /** Position of tile part flag in progression order*/
325 OPJ_INT32 *m_matrice;
326 /** Flag determining tile part generation*/
328 /** allocation by rate/distortion */
329 OPJ_BITFIELD m_disto_alloc : 1;
330 /** allocation by fixed layer */
331 OPJ_BITFIELD m_fixed_alloc : 1;
332 /** add fixed_quality */
333 OPJ_BITFIELD m_fixed_quality : 1;
334 /** Enabling Tile part generation*/
335 OPJ_BITFIELD m_tp_on : 1;
337 opj_encoding_param_t;
339 typedef struct opj_decoding_param {
340 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
342 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
345 opj_decoding_param_t;
351 typedef struct opj_cp {
352 /** Size of the image in bits*/
357 OPJ_UINT32 tx0; /* MSD see norm */
359 OPJ_UINT32 ty0; /* MSD see norm */
366 /** number of tiles in width */
368 /** number of tiles in height */
371 /** number of ppm markers (reserved size) */
372 OPJ_UINT32 ppm_markers_count;
373 /** ppm markers data (table indexed by Zppm) */
374 opj_ppx* ppm_markers;
376 /** packet header store there for future use in t2_decode_packet */
378 /** size of the ppm_data*/
380 /** size of the ppm_data*/
381 OPJ_UINT32 ppm_data_read;
383 OPJ_BYTE *ppm_data_current;
385 /** packet header storage original buffer */
386 OPJ_BYTE *ppm_buffer;
387 /** pointer remaining on the first byte of the first header if ppm is used */
388 OPJ_BYTE *ppm_data_first;
389 /** Number of bytes actually stored inside the ppm_data */
390 OPJ_UINT32 ppm_data_size;
391 /** use in case of multiple marker PPM (number of info already store) */
393 /** use in case of multiple marker PPM (case on non-finished previous info) */
394 OPJ_INT32 ppm_previous;
396 /** tile coding parameters */
400 opj_decoding_param_t m_dec;
401 opj_encoding_param_t m_enc;
405 /** OPJ_TRUE if entire bit stream must be decoded, OPJ_FALSE if partial bitstream decoding allowed */
410 /** enables writing of EPC in MH, thus activating JPWL */
412 /** enables writing of EPB, in case of activated JPWL */
414 /** enables writing of ESD, in case of activated JPWL */
416 /** enables writing of informative techniques of ESD, in case of activated JPWL */
418 /** enables writing of RED, in case of activated JPWL */
420 /** error protection method for MH (0,1,16,32,37-128) */
422 /** tile number of header protection specification (>=0) */
423 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
424 /** error protection methods for TPHs (0,1,16,32,37-128) */
425 int hprot_TPH[JPWL_MAX_NO_TILESPECS];
426 /** tile number of packet protection specification (>=0) */
427 int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
428 /** packet number of packet protection specification (>=0) */
429 int pprot_packno[JPWL_MAX_NO_PACKSPECS];
430 /** error protection methods for packets (0,1,16,32,37-128) */
431 int pprot[JPWL_MAX_NO_PACKSPECS];
432 /** enables writing of ESD, (0/2/4 bytes) */
434 /** sensitivity addressing size (0=auto/2/4 bytes) */
436 /** sensitivity range (0-3) */
438 /** sensitivity method for MH (-1,0-7) */
440 /** tile number of sensitivity specification (>=0) */
441 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
442 /** sensitivity methods for TPHs (-1,0-7) */
443 int sens_TPH[JPWL_MAX_NO_TILESPECS];
444 /** enables JPWL correction at the decoder */
446 /** expected number of components at the decoder */
448 /** maximum number of tiles at the decoder */
449 OPJ_UINT32 max_tiles;
450 #endif /* USE_JPWL */
452 /******** FLAGS *********/
453 /** if ppm == 1 --> there was a PPM marker*/
454 OPJ_BITFIELD ppm : 1;
455 /** tells if the parameter is a coding or decoding one */
456 OPJ_BITFIELD m_is_decoder : 1;
457 /** whether different bit depth or sign per component is allowed. Decoder only for ow */
458 OPJ_BITFIELD allow_different_bit_depth_sign : 1;
463 typedef struct opj_j2k_dec {
464 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
467 * store decoding parameters common to all tiles (information like COD, COC in main header)
469 opj_tcp_t *m_default_tcp;
470 OPJ_BYTE *m_header_data;
471 OPJ_UINT32 m_header_data_size;
472 /** to tell the tile part length */
473 OPJ_UINT32 m_sot_length;
474 /** Only tiles index in the correct range will be decoded.*/
475 OPJ_UINT32 m_start_tile_x;
476 OPJ_UINT32 m_start_tile_y;
477 OPJ_UINT32 m_end_tile_x;
478 OPJ_UINT32 m_end_tile_y;
480 /** Index of the tile to decode (used in get_tile) */
481 OPJ_INT32 m_tile_ind_to_dec;
482 /** Position of the last SOT marker read */
483 OPJ_OFF_T m_last_sot_read_pos;
486 * Indicate that the current tile-part is assume as the last tile part of the codestream.
487 * It is useful in the case of PSot is equal to zero. The sot length will be compute in the
488 * SOD reader function. FIXME NOT USED for the moment
490 OPJ_BOOL m_last_tile_part;
492 OPJ_UINT32 m_numcomps_to_decode;
493 OPJ_UINT32 *m_comps_indices_to_decode;
495 /** to tell that a tile can be decoded. */
496 OPJ_BITFIELD m_can_decode : 1;
497 OPJ_BITFIELD m_discard_tiles : 1;
498 OPJ_BITFIELD m_skip_data : 1;
499 /** TNsot correction : see issue 254 **/
500 OPJ_BITFIELD m_nb_tile_parts_correction_checked : 1;
501 OPJ_BITFIELD m_nb_tile_parts_correction : 1;
505 typedef struct opj_j2k_enc {
506 /** Tile part number, regardless of poc, for each new poc, tp is reset to 1*/
507 OPJ_UINT32 m_current_poc_tile_part_number; /* tp_num */
509 /** 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.*/
510 OPJ_UINT32 m_current_tile_part_number; /*cur_tp_num */
512 /* whether to generate TLM markers */
515 /* whether the Ttlmi field in a TLM marker is a byte (otherwise a uint16) */
516 OPJ_BOOL m_Ttlmi_is_byte;
519 locate the start position of the TLM marker
520 after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
522 OPJ_OFF_T m_tlm_start;
524 * Stores the sizes of the tlm.
526 OPJ_BYTE * m_tlm_sot_offsets_buffer;
528 * The current offset of the tlm buffer.
530 OPJ_BYTE * m_tlm_sot_offsets_current;
532 /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
533 /** used in TLMmarker*/
534 OPJ_UINT32 m_total_tile_parts; /* totnum_tp */
536 /* encoded data for a tile */
537 OPJ_BYTE * m_encoded_tile_data;
539 /* size of the encoded_data */
540 OPJ_UINT32 m_encoded_tile_size;
542 /* encoded data for a tile */
543 OPJ_BYTE * m_header_tile_data;
545 /* size of the encoded_data */
547 OPJ_UINT32 m_header_tile_data_size;
549 /* whether to generate PLT markers */
552 /* reserved bytes in m_encoded_tile_size for PLT markers */
553 OPJ_UINT32 m_reserved_bytes_for_PLT;
555 /** Number of components */
556 OPJ_UINT32 m_nb_comps;
564 JPEG-2000 codestream reader/writer
566 typedef struct opj_j2k {
567 /* J2K codestream is decoded*/
568 OPJ_BOOL m_is_decoder;
572 opj_j2k_dec_t m_decoder;
573 opj_j2k_enc_t m_encoder;
577 /** pointer to the internal/private encoded / decoded image */
578 opj_image_t* m_private_image;
580 /* pointer to the output image (decoded)*/
581 opj_image_t* m_output_image;
583 /** Coding parameters */
586 /** the list of procedures to exec **/
587 opj_procedure_list_t * m_procedure_list;
589 /** the list of validation procedures to follow to make sure the code is valid **/
590 opj_procedure_list_t * m_validation_list;
592 /** helper used to write the index file */
593 opj_codestream_index_t *cstr_index;
595 /** number of the tile currently concern by coding/decoding */
596 OPJ_UINT32 m_current_tile_number;
598 /** the current tile coder/decoder **/
599 struct opj_tcd * m_tcd;
602 opj_thread_pool_t* m_tp;
604 /** Image width coming from JP2 IHDR box. 0 from a pure codestream */
607 /** Image height coming from JP2 IHDR box. 0 from a pure codestream */
610 /** Set to 1 by the decoder initialization if OPJ_DPARAMETERS_DUMP_FLAG is set */
611 unsigned int dump_state;
618 /** @name Exported functions */
620 /* ----------------------------------------------------------------------- */
623 Setup the decoder decoding parameters using user parameters.
624 Decoding parameters are returned in j2k->cp.
625 @param j2k J2K decompressor handle
626 @param parameters decompression parameters
628 void opj_j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
630 void opj_j2k_decoder_set_strict_mode(opj_j2k_t *j2k, OPJ_BOOL strict);
632 OPJ_BOOL opj_j2k_set_threads(opj_j2k_t *j2k, OPJ_UINT32 num_threads);
635 * Creates a J2K compression structure
637 * @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
639 opj_j2k_t* opj_j2k_create_compress(void);
642 OPJ_BOOL opj_j2k_setup_encoder(opj_j2k_t *p_j2k,
643 opj_cparameters_t *parameters,
645 opj_event_mgr_t * p_manager);
648 Converts an enum type progression order to string type
650 const char *opj_j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
652 /* ----------------------------------------------------------------------- */
658 * Ends the decompression procedures and possibiliy add data to be read after the
661 OPJ_BOOL opj_j2k_end_decompress(opj_j2k_t *j2k,
662 opj_stream_private_t *p_stream,
663 opj_event_mgr_t * p_manager);
666 * Reads a jpeg2000 codestream header structure.
668 * @param p_stream the stream to read data from.
669 * @param p_j2k the jpeg2000 codec.
670 * @param p_image FIXME DOC
671 * @param p_manager the user event manager.
673 * @return true if the box is valid.
675 OPJ_BOOL opj_j2k_read_header(opj_stream_private_t *p_stream,
677 opj_image_t** p_image,
678 opj_event_mgr_t* p_manager);
682 * Destroys a jpeg2000 codec.
684 * @param p_j2k the jpeg20000 structure to destroy.
686 void opj_j2k_destroy(opj_j2k_t *p_j2k);
689 * Destroys a codestream index structure.
691 * @param p_cstr_ind the codestream index parameter to destroy.
693 void j2k_destroy_cstr_index(opj_codestream_index_t *p_cstr_ind);
697 * @param p_j2k the jpeg2000 codec.
698 * @param p_tile_index
699 * @param p_data FIXME DOC
700 * @param p_data_size FIXME DOC
701 * @param p_stream the stream to write data to.
702 * @param p_manager the user event manager.
704 OPJ_BOOL opj_j2k_decode_tile(opj_j2k_t * p_j2k,
705 OPJ_UINT32 p_tile_index,
707 OPJ_UINT32 p_data_size,
708 opj_stream_private_t *p_stream,
709 opj_event_mgr_t * p_manager);
712 * Reads a tile header.
713 * @param p_j2k the jpeg2000 codec.
714 * @param p_tile_index FIXME DOC
715 * @param p_data_size FIXME DOC
716 * @param p_tile_x0 FIXME DOC
717 * @param p_tile_y0 FIXME DOC
718 * @param p_tile_x1 FIXME DOC
719 * @param p_tile_y1 FIXME DOC
720 * @param p_nb_comps FIXME DOC
721 * @param p_go_on FIXME DOC
722 * @param p_stream the stream to write data to.
723 * @param p_manager the user event manager.
725 OPJ_BOOL opj_j2k_read_tile_header(opj_j2k_t * p_j2k,
726 OPJ_UINT32 * p_tile_index,
727 OPJ_UINT32 * p_data_size,
728 OPJ_INT32 * p_tile_x0,
729 OPJ_INT32 * p_tile_y0,
730 OPJ_INT32 * p_tile_x1,
731 OPJ_INT32 * p_tile_y1,
732 OPJ_UINT32 * p_nb_comps,
734 opj_stream_private_t *p_stream,
735 opj_event_mgr_t * p_manager);
738 /** Sets the indices of the components to decode.
740 * @param p_j2k the jpeg2000 codec.
741 * @param numcomps Number of components to decode.
742 * @param comps_indices Array of num_compts indices (numbering starting at 0)
743 * corresponding to the components to decode.
744 * @param p_manager Event manager
746 * @return OPJ_TRUE in case of success.
748 OPJ_BOOL opj_j2k_set_decoded_components(opj_j2k_t *p_j2k,
750 const OPJ_UINT32* comps_indices,
751 opj_event_mgr_t * p_manager);
754 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
756 * @param p_j2k the jpeg2000 codec.
757 * @param p_image FIXME DOC
758 * @param p_start_x the left position of the rectangle to decode (in image coordinates).
759 * @param p_start_y the up position of the rectangle to decode (in image coordinates).
760 * @param p_end_x the right position of the rectangle to decode (in image coordinates).
761 * @param p_end_y the bottom position of the rectangle to decode (in image coordinates).
762 * @param p_manager the user event manager
764 * @return true if the area could be set.
766 OPJ_BOOL opj_j2k_set_decode_area(opj_j2k_t *p_j2k,
767 opj_image_t* p_image,
768 OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
769 OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
770 opj_event_mgr_t * p_manager);
773 * Creates a J2K decompression structure.
775 * @return a handle to a J2K decompressor if successful, NULL otherwise.
777 opj_j2k_t* opj_j2k_create_decompress(void);
781 * Dump some elements from the J2K decompression structure .
783 *@param p_j2k the jpeg2000 codec.
784 *@param flag flag to describe what elements are dump.
785 *@param out_stream output stream where dump the elements.
788 void j2k_dump(opj_j2k_t* p_j2k, OPJ_INT32 flag, FILE* out_stream);
793 * Dump an image header structure.
795 *@param image the image header to dump.
796 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
797 *@param out_stream output stream where dump the elements.
799 void j2k_dump_image_header(opj_image_t* image, OPJ_BOOL dev_dump_flag,
803 * Dump a component image header structure.
805 *@param comp the component image header to dump.
806 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
807 *@param out_stream output stream where dump the elements.
809 void j2k_dump_image_comp_header(opj_image_comp_t* comp, OPJ_BOOL dev_dump_flag,
813 * Get the codestream info from a JPEG2000 codec.
815 *@param p_j2k the component image header to dump.
817 *@return the codestream information extract from the jpg2000 codec
819 opj_codestream_info_v2_t* j2k_get_cstr_info(opj_j2k_t* p_j2k);
822 * Get the codestream index from a JPEG2000 codec.
824 *@param p_j2k the component image header to dump.
826 *@return the codestream index extract from the jpg2000 codec
828 opj_codestream_index_t* j2k_get_cstr_index(opj_j2k_t* p_j2k);
831 * Decode an image from a JPEG-2000 codestream
832 * @param j2k J2K decompressor handle
833 * @param p_stream FIXME DOC
834 * @param p_image FIXME DOC
835 * @param p_manager FIXME DOC
838 OPJ_BOOL opj_j2k_decode(opj_j2k_t *j2k,
839 opj_stream_private_t *p_stream,
840 opj_image_t *p_image,
841 opj_event_mgr_t *p_manager);
844 OPJ_BOOL opj_j2k_get_tile(opj_j2k_t *p_j2k,
845 opj_stream_private_t *p_stream,
846 opj_image_t* p_image,
847 opj_event_mgr_t * p_manager,
848 OPJ_UINT32 tile_index);
850 OPJ_BOOL opj_j2k_set_decoded_resolution_factor(opj_j2k_t *p_j2k,
851 OPJ_UINT32 res_factor,
852 opj_event_mgr_t * p_manager);
855 * Specify extra options for the encoder.
857 * @param p_j2k the jpeg2000 codec.
858 * @param p_options options
859 * @param p_manager the user event manager
861 * @see opj_encoder_set_extra_options() for more details.
863 OPJ_BOOL opj_j2k_encoder_set_extra_options(
865 const char* const* p_options,
866 opj_event_mgr_t * p_manager);
870 * @param p_j2k the jpeg2000 codec.
871 * @param p_tile_index FIXME DOC
872 * @param p_data FIXME DOC
873 * @param p_data_size FIXME DOC
874 * @param p_stream the stream to write data to.
875 * @param p_manager the user event manager.
877 OPJ_BOOL opj_j2k_write_tile(opj_j2k_t * p_j2k,
878 OPJ_UINT32 p_tile_index,
880 OPJ_UINT32 p_data_size,
881 opj_stream_private_t *p_stream,
882 opj_event_mgr_t * p_manager);
885 * Encodes an image into a JPEG-2000 codestream
887 OPJ_BOOL opj_j2k_encode(opj_j2k_t * p_j2k,
888 opj_stream_private_t *cio,
889 opj_event_mgr_t * p_manager);
892 * Starts a compression scheme, i.e. validates the codec parameters, writes the header.
894 * @param p_j2k the jpeg2000 codec.
895 * @param p_stream the stream object.
896 * @param p_image FIXME DOC
897 * @param p_manager the user event manager.
899 * @return true if the codec is valid.
901 OPJ_BOOL opj_j2k_start_compress(opj_j2k_t *p_j2k,
902 opj_stream_private_t *p_stream,
903 opj_image_t * p_image,
904 opj_event_mgr_t * p_manager);
907 * Ends the compression procedures and possibiliy add data to be read after the
910 OPJ_BOOL opj_j2k_end_compress(opj_j2k_t *p_j2k,
911 opj_stream_private_t *cio,
912 opj_event_mgr_t * p_manager);
914 OPJ_BOOL opj_j2k_setup_mct_encoding(opj_tcp_t * p_tcp, opj_image_t * p_image);
917 #endif /* OPJ_J2K_H */