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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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 #define J2K_TCD_MATRIX_MAX_LAYER_COUNT 10
117 #define J2K_TCD_MATRIX_MAX_RESOLUTION_COUNT 10
119 /* ----------------------------------------------------------------------- */
122 * Values that specify the status of the decoding process when decoding the main header.
123 * These values may be combined with a | operator.
125 typedef enum J2K_STATUS {
126 J2K_STATE_NONE = 0x0000, /**< a SOC marker is expected */
127 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
128 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
129 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
130 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
131 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
132 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
133 J2K_STATE_NEOC = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
134 J2K_STATE_DATA = 0x0080, /**< a tile header has been successfully read and codestream is expected */
136 J2K_STATE_EOC = 0x0100, /**< the decoding process has encountered the EOC marker */
137 J2K_STATE_ERR = 0x8000 /**< the decoding process has encountered an error (FIXME warning V1 = 0x0080)*/
141 * Type of elements storing in the MCT data
143 typedef enum MCT_ELEMENT_TYPE {
144 MCT_TYPE_INT16 = 0, /** MCT data is stored as signed shorts*/
145 MCT_TYPE_INT32 = 1, /** MCT data is stored as signed integers*/
146 MCT_TYPE_FLOAT = 2, /** MCT data is stored as floats*/
147 MCT_TYPE_DOUBLE = 3 /** MCT data is stored as doubles*/
148 } J2K_MCT_ELEMENT_TYPE;
153 typedef enum MCT_ARRAY_TYPE {
154 MCT_TYPE_DEPENDENCY = 0,
155 MCT_TYPE_DECORRELATION = 1,
157 } J2K_MCT_ARRAY_TYPE;
159 /* ----------------------------------------------------------------------- */
164 typedef enum T2_MODE {
165 THRESH_CALC = 0, /** Function called in Rate allocation process*/
166 FINAL_PASS = 1 /** Function called in Tier 2 process*/
170 * Quantization stepsize
172 typedef struct opj_stepsize {
180 Tile-component coding parameters
182 typedef struct opj_tccp {
185 /** number of resolutions */
186 OPJ_UINT32 numresolutions;
187 /** code-blocks width */
189 /** code-blocks height */
191 /** code-block coding style */
193 /** discrete wavelet transform identifier */
195 /** quantisation style */
197 /** stepsizes used for quantization */
198 opj_stepsize_t stepsizes[OPJ_J2K_MAXBANDS];
199 /** number of guard bits */
201 /** Region Of Interest shift */
203 /** precinct width */
204 OPJ_UINT32 prcw[OPJ_J2K_MAXRLVLS];
205 /** precinct height */
206 OPJ_UINT32 prch[OPJ_J2K_MAXRLVLS];
207 /** the dc_level_shift **/
208 OPJ_INT32 m_dc_level_shift;
217 typedef struct opj_mct_data {
218 J2K_MCT_ELEMENT_TYPE m_element_type;
219 J2K_MCT_ARRAY_TYPE m_array_type;
222 OPJ_UINT32 m_data_size;
229 typedef struct opj_simple_mcc_decorrelation_data {
231 OPJ_UINT32 m_nb_comps;
232 opj_mct_data_t * m_decorrelation_array;
233 opj_mct_data_t * m_offset_array;
234 OPJ_BITFIELD m_is_irreversible : 1;
236 opj_simple_mcc_decorrelation_data_t;
238 typedef struct opj_ppx_struct {
239 OPJ_BYTE* m_data; /* m_data == NULL => Zppx not read yet */
240 OPJ_UINT32 m_data_size;
244 Tile coding parameters :
245 this structure is used to store coding/decoding parameters common to all
246 tiles (information like COD, COC in main header)
248 typedef struct opj_tcp {
251 /** progression order */
253 /** number of layers */
254 OPJ_UINT32 numlayers;
255 OPJ_UINT32 num_layers_to_decode;
256 /** multi-component transform identifier */
258 /** rates of layers */
259 OPJ_FLOAT32 rates[100];
260 /** number of progression order changes */
262 /** progression order changes */
263 opj_poc_t pocs[J2K_MAX_POCS];
265 /** number of ppt markers (reserved size) */
266 OPJ_UINT32 ppt_markers_count;
267 /** ppt markers data (table indexed by Zppt) */
268 opj_ppx* ppt_markers;
270 /** packet header store there for future use in t2_decode_packet */
272 /** used to keep a track of the allocated memory */
273 OPJ_BYTE *ppt_buffer;
274 /** Number of bytes stored inside ppt_data*/
275 OPJ_UINT32 ppt_data_size;
276 /** size of ppt_data*/
279 OPJ_FLOAT32 distoratio[100];
280 /** tile-component coding parameters */
282 /** current tile part number or -1 if first time into this tile */
283 OPJ_INT32 m_current_tile_part_number;
284 /** number of tile parts for the tile. */
285 OPJ_UINT32 m_nb_tile_parts;
286 /** data for the tile */
289 OPJ_UINT32 m_data_size;
290 /** encoding norms */
291 OPJ_FLOAT64 * mct_norms;
292 /** the mct decoding matrix */
293 OPJ_FLOAT32 * m_mct_decoding_matrix;
294 /** the mct coding matrix */
295 OPJ_FLOAT32 * m_mct_coding_matrix;
297 opj_mct_data_t * m_mct_records;
298 /** the number of mct records. */
299 OPJ_UINT32 m_nb_mct_records;
300 /** the max number of mct records. */
301 OPJ_UINT32 m_nb_max_mct_records;
303 opj_simple_mcc_decorrelation_data_t * m_mcc_records;
304 /** the number of mct records. */
305 OPJ_UINT32 m_nb_mcc_records;
306 /** the max number of mct records. */
307 OPJ_UINT32 m_nb_max_mcc_records;
310 /***** FLAGS *******/
311 /** If cod == 1 --> there was a COD marker for the present tile */
312 OPJ_BITFIELD cod : 1;
313 /** If ppt == 1 --> there was a PPT marker for the present tile */
314 OPJ_BITFIELD ppt : 1;
315 /** indicates if a POC marker has been used O:NO, 1:YES */
316 OPJ_BITFIELD POC : 1;
321 Rate allocation strategy
324 RATE_DISTORTION_RATIO = 0, /** allocation by rate/distortion */
325 FIXED_DISTORTION_RATIO = 1, /** allocation by fixed distortion ratio (PSNR) (fixed quality) */
326 FIXED_LAYER = 2, /** allocation by fixed layer (number of passes per layer / resolution / subband) */
327 } J2K_QUALITY_LAYER_ALLOCATION_STRATEGY;
330 typedef struct opj_encoding_param {
331 /** Maximum rate for each component. If == 0, component size limitation is not considered */
332 OPJ_UINT32 m_max_comp_size;
333 /** Position of tile part flag in progression order*/
336 OPJ_INT32 *m_matrice;
337 /** Flag determining tile part generation*/
339 /** Quality layer allocation strategy */
340 J2K_QUALITY_LAYER_ALLOCATION_STRATEGY m_quality_layer_alloc_strategy;
341 /** Enabling Tile part generation*/
342 OPJ_BITFIELD m_tp_on : 1;
344 opj_encoding_param_t;
346 typedef struct opj_decoding_param {
347 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
349 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
352 opj_decoding_param_t;
358 typedef struct opj_cp {
359 /** Size of the image in bits*/
364 OPJ_UINT32 tx0; /* MSD see norm */
366 OPJ_UINT32 ty0; /* MSD see norm */
373 /** number of tiles in width */
375 /** number of tiles in height */
378 /** number of ppm markers (reserved size) */
379 OPJ_UINT32 ppm_markers_count;
380 /** ppm markers data (table indexed by Zppm) */
381 opj_ppx* ppm_markers;
383 /** packet header store there for future use in t2_decode_packet */
385 /** size of the ppm_data*/
387 /** size of the ppm_data*/
388 OPJ_UINT32 ppm_data_read;
390 OPJ_BYTE *ppm_data_current;
392 /** packet header storage original buffer */
393 OPJ_BYTE *ppm_buffer;
394 /** pointer remaining on the first byte of the first header if ppm is used */
395 OPJ_BYTE *ppm_data_first;
396 /** Number of bytes actually stored inside the ppm_data */
397 OPJ_UINT32 ppm_data_size;
398 /** use in case of multiple marker PPM (number of info already store) */
400 /** use in case of multiple marker PPM (case on non-finished previous info) */
401 OPJ_INT32 ppm_previous;
403 /** tile coding parameters */
407 opj_decoding_param_t m_dec;
408 opj_encoding_param_t m_enc;
412 /** OPJ_TRUE if entire bit stream must be decoded, OPJ_FALSE if partial bitstream decoding allowed */
417 /** enables writing of EPC in MH, thus activating JPWL */
419 /** enables writing of EPB, in case of activated JPWL */
421 /** enables writing of ESD, in case of activated JPWL */
423 /** enables writing of informative techniques of ESD, in case of activated JPWL */
425 /** enables writing of RED, in case of activated JPWL */
427 /** error protection method for MH (0,1,16,32,37-128) */
429 /** tile number of header protection specification (>=0) */
430 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
431 /** error protection methods for TPHs (0,1,16,32,37-128) */
432 int hprot_TPH[JPWL_MAX_NO_TILESPECS];
433 /** tile number of packet protection specification (>=0) */
434 int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
435 /** packet number of packet protection specification (>=0) */
436 int pprot_packno[JPWL_MAX_NO_PACKSPECS];
437 /** error protection methods for packets (0,1,16,32,37-128) */
438 int pprot[JPWL_MAX_NO_PACKSPECS];
439 /** enables writing of ESD, (0/2/4 bytes) */
441 /** sensitivity addressing size (0=auto/2/4 bytes) */
443 /** sensitivity range (0-3) */
445 /** sensitivity method for MH (-1,0-7) */
447 /** tile number of sensitivity specification (>=0) */
448 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
449 /** sensitivity methods for TPHs (-1,0-7) */
450 int sens_TPH[JPWL_MAX_NO_TILESPECS];
451 /** enables JPWL correction at the decoder */
453 /** expected number of components at the decoder */
455 /** maximum number of tiles at the decoder */
456 OPJ_UINT32 max_tiles;
457 #endif /* USE_JPWL */
459 /******** FLAGS *********/
460 /** if ppm == 1 --> there was a PPM marker*/
461 OPJ_BITFIELD ppm : 1;
462 /** tells if the parameter is a coding or decoding one */
463 OPJ_BITFIELD m_is_decoder : 1;
464 /** whether different bit depth or sign per component is allowed. Decoder only for ow */
465 OPJ_BITFIELD allow_different_bit_depth_sign : 1;
470 typedef struct opj_j2k_dec {
471 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
474 * store decoding parameters common to all tiles (information like COD, COC in main header)
476 opj_tcp_t *m_default_tcp;
477 OPJ_BYTE *m_header_data;
478 OPJ_UINT32 m_header_data_size;
479 /** to tell the tile part length */
480 OPJ_UINT32 m_sot_length;
481 /** Only tiles index in the correct range will be decoded.*/
482 OPJ_UINT32 m_start_tile_x;
483 OPJ_UINT32 m_start_tile_y;
484 OPJ_UINT32 m_end_tile_x;
485 OPJ_UINT32 m_end_tile_y;
487 /** Index of the tile to decode (used in get_tile) */
488 OPJ_INT32 m_tile_ind_to_dec;
489 /** Position of the last SOT marker read */
490 OPJ_OFF_T m_last_sot_read_pos;
493 * Indicate that the current tile-part is assume as the last tile part of the codestream.
494 * It is useful in the case of PSot is equal to zero. The sot length will be compute in the
495 * SOD reader function. FIXME NOT USED for the moment
497 OPJ_BOOL m_last_tile_part;
499 OPJ_UINT32 m_numcomps_to_decode;
500 OPJ_UINT32 *m_comps_indices_to_decode;
502 /** to tell that a tile can be decoded. */
503 OPJ_BITFIELD m_can_decode : 1;
504 OPJ_BITFIELD m_discard_tiles : 1;
505 OPJ_BITFIELD m_skip_data : 1;
506 /** TNsot correction : see issue 254 **/
507 OPJ_BITFIELD m_nb_tile_parts_correction_checked : 1;
508 OPJ_BITFIELD m_nb_tile_parts_correction : 1;
512 typedef struct opj_j2k_enc {
513 /** Tile part number, regardless of poc, for each new poc, tp is reset to 1*/
514 OPJ_UINT32 m_current_poc_tile_part_number; /* tp_num */
516 /** 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.*/
517 OPJ_UINT32 m_current_tile_part_number; /*cur_tp_num */
519 /* whether to generate TLM markers */
522 /* whether the Ttlmi field in a TLM marker is a byte (otherwise a uint16) */
523 OPJ_BOOL m_Ttlmi_is_byte;
526 locate the start position of the TLM marker
527 after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
529 OPJ_OFF_T m_tlm_start;
531 * Stores the sizes of the tlm.
533 OPJ_BYTE * m_tlm_sot_offsets_buffer;
535 * The current offset of the tlm buffer.
537 OPJ_BYTE * m_tlm_sot_offsets_current;
539 /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
540 /** used in TLMmarker*/
541 OPJ_UINT32 m_total_tile_parts; /* totnum_tp */
543 /* encoded data for a tile */
544 OPJ_BYTE * m_encoded_tile_data;
546 /* size of the encoded_data */
547 OPJ_UINT32 m_encoded_tile_size;
549 /* encoded data for a tile */
550 OPJ_BYTE * m_header_tile_data;
552 /* size of the encoded_data */
554 OPJ_UINT32 m_header_tile_data_size;
556 /* whether to generate PLT markers */
559 /* reserved bytes in m_encoded_tile_size for PLT markers */
560 OPJ_UINT32 m_reserved_bytes_for_PLT;
562 /** Number of components */
563 OPJ_UINT32 m_nb_comps;
571 JPEG-2000 codestream reader/writer
573 typedef struct opj_j2k {
574 /* J2K codestream is decoded*/
575 OPJ_BOOL m_is_decoder;
579 opj_j2k_dec_t m_decoder;
580 opj_j2k_enc_t m_encoder;
584 /** pointer to the internal/private encoded / decoded image */
585 opj_image_t* m_private_image;
587 /* pointer to the output image (decoded)*/
588 opj_image_t* m_output_image;
590 /** Coding parameters */
593 /** the list of procedures to exec **/
594 opj_procedure_list_t * m_procedure_list;
596 /** the list of validation procedures to follow to make sure the code is valid **/
597 opj_procedure_list_t * m_validation_list;
599 /** helper used to write the index file */
600 opj_codestream_index_t *cstr_index;
602 /** number of the tile currently concern by coding/decoding */
603 OPJ_UINT32 m_current_tile_number;
605 /** the current tile coder/decoder **/
606 struct opj_tcd * m_tcd;
609 opj_thread_pool_t* m_tp;
611 /** Image width coming from JP2 IHDR box. 0 from a pure codestream */
614 /** Image height coming from JP2 IHDR box. 0 from a pure codestream */
617 /** Set to 1 by the decoder initialization if OPJ_DPARAMETERS_DUMP_FLAG is set */
618 unsigned int dump_state;
625 /** @name Exported functions */
627 /* ----------------------------------------------------------------------- */
630 Setup the decoder decoding parameters using user parameters.
631 Decoding parameters are returned in j2k->cp.
632 @param j2k J2K decompressor handle
633 @param parameters decompression parameters
635 void opj_j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
637 void opj_j2k_decoder_set_strict_mode(opj_j2k_t *j2k, OPJ_BOOL strict);
639 OPJ_BOOL opj_j2k_set_threads(opj_j2k_t *j2k, OPJ_UINT32 num_threads);
642 * Creates a J2K compression structure
644 * @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
646 opj_j2k_t* opj_j2k_create_compress(void);
649 OPJ_BOOL opj_j2k_setup_encoder(opj_j2k_t *p_j2k,
650 opj_cparameters_t *parameters,
652 opj_event_mgr_t * p_manager);
655 Converts an enum type progression order to string type
657 const char *opj_j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
659 /* ----------------------------------------------------------------------- */
665 * Ends the decompression procedures and possibiliy add data to be read after the
668 OPJ_BOOL opj_j2k_end_decompress(opj_j2k_t *j2k,
669 opj_stream_private_t *p_stream,
670 opj_event_mgr_t * p_manager);
673 * Reads a jpeg2000 codestream header structure.
675 * @param p_stream the stream to read data from.
676 * @param p_j2k the jpeg2000 codec.
677 * @param p_image FIXME DOC
678 * @param p_manager the user event manager.
680 * @return true if the box is valid.
682 OPJ_BOOL opj_j2k_read_header(opj_stream_private_t *p_stream,
684 opj_image_t** p_image,
685 opj_event_mgr_t* p_manager);
689 * Destroys a jpeg2000 codec.
691 * @param p_j2k the jpeg20000 structure to destroy.
693 void opj_j2k_destroy(opj_j2k_t *p_j2k);
696 * Destroys a codestream index structure.
698 * @param p_cstr_ind the codestream index parameter to destroy.
700 void j2k_destroy_cstr_index(opj_codestream_index_t *p_cstr_ind);
704 * @param p_j2k the jpeg2000 codec.
705 * @param p_tile_index
706 * @param p_data FIXME DOC
707 * @param p_data_size FIXME DOC
708 * @param p_stream the stream to write data to.
709 * @param p_manager the user event manager.
711 OPJ_BOOL opj_j2k_decode_tile(opj_j2k_t * p_j2k,
712 OPJ_UINT32 p_tile_index,
714 OPJ_UINT32 p_data_size,
715 opj_stream_private_t *p_stream,
716 opj_event_mgr_t * p_manager);
719 * Reads a tile header.
720 * @param p_j2k the jpeg2000 codec.
721 * @param p_tile_index FIXME DOC
722 * @param p_data_size FIXME DOC
723 * @param p_tile_x0 FIXME DOC
724 * @param p_tile_y0 FIXME DOC
725 * @param p_tile_x1 FIXME DOC
726 * @param p_tile_y1 FIXME DOC
727 * @param p_nb_comps FIXME DOC
728 * @param p_go_on FIXME DOC
729 * @param p_stream the stream to write data to.
730 * @param p_manager the user event manager.
732 OPJ_BOOL opj_j2k_read_tile_header(opj_j2k_t * p_j2k,
733 OPJ_UINT32 * p_tile_index,
734 OPJ_UINT32 * p_data_size,
735 OPJ_INT32 * p_tile_x0,
736 OPJ_INT32 * p_tile_y0,
737 OPJ_INT32 * p_tile_x1,
738 OPJ_INT32 * p_tile_y1,
739 OPJ_UINT32 * p_nb_comps,
741 opj_stream_private_t *p_stream,
742 opj_event_mgr_t * p_manager);
745 /** Sets the indices of the components to decode.
747 * @param p_j2k the jpeg2000 codec.
748 * @param numcomps Number of components to decode.
749 * @param comps_indices Array of num_compts indices (numbering starting at 0)
750 * corresponding to the components to decode.
751 * @param p_manager Event manager
753 * @return OPJ_TRUE in case of success.
755 OPJ_BOOL opj_j2k_set_decoded_components(opj_j2k_t *p_j2k,
757 const OPJ_UINT32* comps_indices,
758 opj_event_mgr_t * p_manager);
761 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
763 * @param p_j2k the jpeg2000 codec.
764 * @param p_image FIXME DOC
765 * @param p_start_x the left position of the rectangle to decode (in image coordinates).
766 * @param p_start_y the up position of the rectangle to decode (in image coordinates).
767 * @param p_end_x the right position of the rectangle to decode (in image coordinates).
768 * @param p_end_y the bottom position of the rectangle to decode (in image coordinates).
769 * @param p_manager the user event manager
771 * @return true if the area could be set.
773 OPJ_BOOL opj_j2k_set_decode_area(opj_j2k_t *p_j2k,
774 opj_image_t* p_image,
775 OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
776 OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
777 opj_event_mgr_t * p_manager);
780 * Creates a J2K decompression structure.
782 * @return a handle to a J2K decompressor if successful, NULL otherwise.
784 opj_j2k_t* opj_j2k_create_decompress(void);
788 * Dump some elements from the J2K decompression structure .
790 *@param p_j2k the jpeg2000 codec.
791 *@param flag flag to describe what elements are dump.
792 *@param out_stream output stream where dump the elements.
795 void j2k_dump(opj_j2k_t* p_j2k, OPJ_INT32 flag, FILE* out_stream);
800 * Dump an image header structure.
802 *@param image the image header to dump.
803 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
804 *@param out_stream output stream where dump the elements.
806 void j2k_dump_image_header(opj_image_t* image, OPJ_BOOL dev_dump_flag,
810 * Dump a component image header structure.
812 *@param comp the component image header to dump.
813 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
814 *@param out_stream output stream where dump the elements.
816 void j2k_dump_image_comp_header(opj_image_comp_t* comp, OPJ_BOOL dev_dump_flag,
820 * Get the codestream info from a JPEG2000 codec.
822 *@param p_j2k the component image header to dump.
824 *@return the codestream information extract from the jpg2000 codec
826 opj_codestream_info_v2_t* j2k_get_cstr_info(opj_j2k_t* p_j2k);
829 * Get the codestream index from a JPEG2000 codec.
831 *@param p_j2k the component image header to dump.
833 *@return the codestream index extract from the jpg2000 codec
835 opj_codestream_index_t* j2k_get_cstr_index(opj_j2k_t* p_j2k);
838 * Decode an image from a JPEG-2000 codestream
839 * @param j2k J2K decompressor handle
840 * @param p_stream FIXME DOC
841 * @param p_image FIXME DOC
842 * @param p_manager FIXME DOC
845 OPJ_BOOL opj_j2k_decode(opj_j2k_t *j2k,
846 opj_stream_private_t *p_stream,
847 opj_image_t *p_image,
848 opj_event_mgr_t *p_manager);
851 OPJ_BOOL opj_j2k_get_tile(opj_j2k_t *p_j2k,
852 opj_stream_private_t *p_stream,
853 opj_image_t* p_image,
854 opj_event_mgr_t * p_manager,
855 OPJ_UINT32 tile_index);
857 OPJ_BOOL opj_j2k_set_decoded_resolution_factor(opj_j2k_t *p_j2k,
858 OPJ_UINT32 res_factor,
859 opj_event_mgr_t * p_manager);
862 * Specify extra options for the encoder.
864 * @param p_j2k the jpeg2000 codec.
865 * @param p_options options
866 * @param p_manager the user event manager
868 * @see opj_encoder_set_extra_options() for more details.
870 OPJ_BOOL opj_j2k_encoder_set_extra_options(
872 const char* const* p_options,
873 opj_event_mgr_t * p_manager);
877 * @param p_j2k the jpeg2000 codec.
878 * @param p_tile_index FIXME DOC
879 * @param p_data FIXME DOC
880 * @param p_data_size FIXME DOC
881 * @param p_stream the stream to write data to.
882 * @param p_manager the user event manager.
884 OPJ_BOOL opj_j2k_write_tile(opj_j2k_t * p_j2k,
885 OPJ_UINT32 p_tile_index,
887 OPJ_UINT32 p_data_size,
888 opj_stream_private_t *p_stream,
889 opj_event_mgr_t * p_manager);
892 * Encodes an image into a JPEG-2000 codestream
894 OPJ_BOOL opj_j2k_encode(opj_j2k_t * p_j2k,
895 opj_stream_private_t *cio,
896 opj_event_mgr_t * p_manager);
899 * Starts a compression scheme, i.e. validates the codec parameters, writes the header.
901 * @param p_j2k the jpeg2000 codec.
902 * @param p_stream the stream object.
903 * @param p_image FIXME DOC
904 * @param p_manager the user event manager.
906 * @return true if the codec is valid.
908 OPJ_BOOL opj_j2k_start_compress(opj_j2k_t *p_j2k,
909 opj_stream_private_t *p_stream,
910 opj_image_t * p_image,
911 opj_event_mgr_t * p_manager);
914 * Ends the compression procedures and possibiliy add data to be read after the
917 OPJ_BOOL opj_j2k_end_compress(opj_j2k_t *p_j2k,
918 opj_stream_private_t *cio,
919 opj_event_mgr_t * p_manager);
921 OPJ_BOOL opj_j2k_setup_mct_encoding(opj_tcp_t * p_tcp, opj_image_t * p_image);
924 #endif /* OPJ_J2K_H */