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
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
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18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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36 @brief The JPEG-2000 Codestream Reader/Writer (J2K)
38 The functions in J2K.C have for goal to read/write the several parts of the codestream: markers and data.
41 /** @defgroup J2K J2K - JPEG-2000 codestream reader/writer */
44 #define J2K_CP_CSTY_PRT 0x01
45 #define J2K_CP_CSTY_SOP 0x02
46 #define J2K_CP_CSTY_EPH 0x04
47 #define J2K_CCP_CSTY_PRT 0x01
48 #define J2K_CCP_CBLKSTY_LAZY 0x01 /**< Selective arithmetic coding bypass */
49 #define J2K_CCP_CBLKSTY_RESET 0x02 /**< Reset context probabilities on coding pass boundaries */
50 #define J2K_CCP_CBLKSTY_TERMALL 0x04 /**< Termination on each coding pass */
51 #define J2K_CCP_CBLKSTY_VSC 0x08 /**< Vertically stripe causal context */
52 #define J2K_CCP_CBLKSTY_PTERM 0x10 /**< Predictable termination */
53 #define J2K_CCP_CBLKSTY_SEGSYM 0x20 /**< Segmentation symbols are used */
54 #define J2K_CCP_QNTSTY_NOQNT 0
55 #define J2K_CCP_QNTSTY_SIQNT 1
56 #define J2K_CCP_QNTSTY_SEQNT 2
58 /* ----------------------------------------------------------------------- */
60 #define J2K_MS_SOC 0xff4f /**< SOC marker value */
61 #define J2K_MS_SOT 0xff90 /**< SOT marker value */
62 #define J2K_MS_SOD 0xff93 /**< SOD marker value */
63 #define J2K_MS_EOC 0xffd9 /**< EOC marker value */
64 #define J2K_MS_SIZ 0xff51 /**< SIZ marker value */
65 #define J2K_MS_COD 0xff52 /**< COD marker value */
66 #define J2K_MS_COC 0xff53 /**< COC marker value */
67 #define J2K_MS_RGN 0xff5e /**< RGN marker value */
68 #define J2K_MS_QCD 0xff5c /**< QCD marker value */
69 #define J2K_MS_QCC 0xff5d /**< QCC marker value */
70 #define J2K_MS_POC 0xff5f /**< POC marker value */
71 #define J2K_MS_TLM 0xff55 /**< TLM marker value */
72 #define J2K_MS_PLM 0xff57 /**< PLM marker value */
73 #define J2K_MS_PLT 0xff58 /**< PLT marker value */
74 #define J2K_MS_PPM 0xff60 /**< PPM marker value */
75 #define J2K_MS_PPT 0xff61 /**< PPT marker value */
76 #define J2K_MS_SOP 0xff91 /**< SOP marker value */
77 #define J2K_MS_EPH 0xff92 /**< EPH marker value */
78 #define J2K_MS_CRG 0xff63 /**< CRG marker value */
79 #define J2K_MS_COM 0xff64 /**< COM marker value */
81 #define J2K_MS_UNK 0 /**< UNKNOWN marker value */
83 #ifdef TODO_MS /* FIXME */
84 #define J2K_MS_CBD 0xff78 /**< CBD marker value */
85 #define J2K_MS_MCC 0xff75 /**< MCC marker value */
86 #define J2K_MS_MCT 0xff74 /**< MCT marker value */
87 #define J2K_MS_MCO 0xff77 /**< MCO marker value */
92 #define J2K_MS_EPC 0xff68 /**< EPC marker value (Part 11: JPEG 2000 for Wireless) */
93 #define J2K_MS_EPB 0xff66 /**< EPB marker value (Part 11: JPEG 2000 for Wireless) */
94 #define J2K_MS_ESD 0xff67 /**< ESD marker value (Part 11: JPEG 2000 for Wireless) */
95 #define J2K_MS_RED 0xff69 /**< RED marker value (Part 11: JPEG 2000 for Wireless) */
98 #define J2K_MS_SEC 0xff65 /**< SEC marker value (Part 8: Secure JPEG 2000) */
99 #define J2K_MS_INSEC 0xff94 /**< INSEC marker value (Part 8: Secure JPEG 2000) */
100 #endif /* USE_JPSEC */
104 struct opj_stream_private;
106 /* ----------------------------------------------------------------------- */
109 Values that specify the status of the decoding process when decoding the main header.
110 These values may be combined with a | operator.
112 typedef enum J2K_STATUS {
113 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
114 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
115 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
116 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
117 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
118 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
119 J2K_STATE_NEOC = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */
121 J2K_STATE_EOC = 0x0100, /**< the decoding process has encountered the EOC marker */
122 J2K_STATE_ERR = 0x8000 /**< the decoding process has encountered an error (FIXME warning V1 = 0x0080)*/
125 /* ----------------------------------------------------------------------- */
130 typedef enum T2_MODE {
131 THRESH_CALC = 0, /** Function called in Rate allocation process*/
132 FINAL_PASS = 1 /** Function called in Tier 2 process*/
136 Quantization stepsize
138 typedef struct opj_stepsize {
146 //Tile-component coding parameters
148 //typedef struct opj_tccp {
149 // /** coding style */
151 // /** number of resolutions */
152 // int numresolutions;
153 // /** code-blocks width */
155 // /** code-blocks height */
157 // /** code-block coding style */
159 // /** discrete wavelet transform identifier */
161 // /** quantisation style */
163 // /** stepsizes used for quantization */
164 // opj_stepsize_t stepsizes[J2K_MAXBANDS];
165 // /** number of guard bits */
167 // /** Region Of Interest shift */
169 // /** precinct width */
170 // int prcw[J2K_MAXRLVLS];
171 // /** precinct height */
172 // int prch[J2K_MAXRLVLS];
176 Tile-component coding parameters
178 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[J2K_MAXBANDS];
196 /** number of guard bits */
198 /** Region Of Interest shift */
200 /** precinct width */
201 OPJ_UINT32 prcw[J2K_MAXRLVLS];
202 /** precinct height */
203 OPJ_UINT32 prch[J2K_MAXRLVLS];
204 /** the dc_level_shift **/
205 OPJ_INT32 m_dc_level_shift;
211 Tile coding parameters :
212 this structure is used to store coding/decoding parameters common to all
213 tiles (information like COD, COC in main header)
215 typedef struct opj_tcp {
216 /** 1 : first part-tile of a tile */
220 /** progression order */
222 /** number of layers */
224 /** multi-component transform identifier */
226 /** rates of layers */
228 /** number of progression order changes */
230 /** indicates if a POC marker has been used O:NO, 1:YES */
232 /** progression order changes */
234 /** packet header store there for futur use in t2_decode_packet */
235 unsigned char *ppt_data;
236 /** pointer remaining on the first byte of the first header if ppt is used */
237 unsigned char *ppt_data_first;
238 /** If ppt == 1 --> there was a PPT marker for the present tile */
240 /** used in case of multiple marker PPT (number of info already stored) */
244 /** add fixed_quality */
245 float distoratio[100];
246 /** tile-component coding parameters */
252 * Type of data for storing the MCT data
254 typedef enum MCT_ELEMENT_TYPE
256 MCT_TYPE_INT16 = 0, /** MCT data is stored as signed shorts*/
257 MCT_TYPE_INT32 = 1, /** MCT data is stored as signed integers*/
258 MCT_TYPE_FLOAT = 2, /** MCT data is stored as floats*/
259 MCT_TYPE_DOUBLE = 3 /** MCT data is stored as doubles*/
260 } J2K_MCT_ELEMENT_TYPE;
263 * Type of data for storing the MCT data
265 typedef enum MCT_ARRAY_TYPE
267 MCT_TYPE_DEPENDENCY = 0,
268 MCT_TYPE_DECORRELATION = 1,
270 } J2K_MCT_ARRAY_TYPE;
272 typedef struct opj_mct_data
274 J2K_MCT_ELEMENT_TYPE m_element_type;
275 J2K_MCT_ARRAY_TYPE m_array_type;
278 OPJ_UINT32 m_data_size;
282 typedef struct opj_simple_mcc_decorrelation_data
285 OPJ_UINT32 m_nb_comps;
286 opj_mct_data_t * m_decorrelation_array;
287 opj_mct_data_t * m_offset_array;
288 OPJ_UINT32 m_is_irreversible : 1;
290 opj_simple_mcc_decorrelation_data_t;
293 Tile coding parameters :
294 this structure is used to store coding/decoding parameters common to all
295 tiles (information like COD, COC in main header)
297 typedef struct opj_tcp_v2
301 /** progression order */
303 /** number of layers */
304 OPJ_UINT32 numlayers;
305 OPJ_UINT32 num_layers_to_decode;
306 /** multi-component transform identifier */
308 /** rates of layers */
309 OPJ_FLOAT32 rates[100];
310 /** number of progression order changes */
312 /** progression order changes */
314 /** packet header store there for futur use in t2_decode_packet */
316 /** used to keep a track of the allocated memory */
317 OPJ_BYTE *ppt_buffer;
318 /** Number of bytes stored inside ppt_data*/
319 OPJ_UINT32 ppt_data_size;
320 /** size of ppt_data*/
322 /** add fixed_quality */
323 OPJ_FLOAT32 distoratio[100];
324 /** tile-component coding parameters */
326 /** number of tile parts for the tile. */
327 OPJ_UINT32 m_nb_tile_parts;
328 /** data for the tile */
331 OPJ_UINT32 m_data_size;
332 /** encoding norms */
333 OPJ_FLOAT64 * mct_norms;
334 /** the mct decoding matrix */
335 OPJ_FLOAT32 * m_mct_decoding_matrix;
336 /** the mct coding matrix */
337 OPJ_FLOAT32 * m_mct_coding_matrix;
339 opj_mct_data_t * m_mct_records;
340 /** the number of mct records. */
341 OPJ_UINT32 m_nb_mct_records;
342 /** the max number of mct records. */
343 OPJ_UINT32 m_nb_max_mct_records;
345 opj_simple_mcc_decorrelation_data_t * m_mcc_records;
346 /** the number of mct records. */
347 OPJ_UINT32 m_nb_mcc_records;
348 /** the max number of mct records. */
349 OPJ_UINT32 m_nb_max_mcc_records;
353 /***** FLAGS *******/
354 /** If ppt == 1 --> there was a PPT marker for the present tile */
356 /** indicates if a POC marker has been used O:NO, 1:YES */
367 typedef struct opj_cp {
368 /** Digital cinema profile*/
369 OPJ_CINEMA_MODE cinema;
370 /** Maximum rate for each component. If == 0, component size limitation is not considered */
372 /** Size of the image in bits*/
375 OPJ_RSIZ_CAPABILITIES rsiz;
376 /** Enabling Tile part generation*/
378 /** Flag determining tile part generation*/
380 /** Position of tile part flag in progression order*/
382 /** allocation by rate/distortion */
384 /** allocation by fixed layer */
386 /** add fixed_quality */
388 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
390 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
392 /** if == NO_LIMITATION, decode entire codestream; if == LIMIT_TO_MAIN_HEADER then only decode the main header */
393 OPJ_LIMIT_DECODING limit_decoding;
402 /** comment for coding */
404 /** number of tiles in width */
406 /** number of tiles in heigth */
408 /** ID number of the tiles present in the codestream */
410 /** size of the vector tileno */
412 /** packet header store there for futur use in t2_decode_packet */
413 unsigned char *ppm_data;
414 /** pointer remaining on the first byte of the first header if ppm is used */
415 unsigned char *ppm_data_first;
416 /** if ppm == 1 --> there was a PPM marker for the present tile */
418 /** use in case of multiple marker PPM (number of info already store) */
420 /** use in case of multiple marker PPM (case on non-finished previous info) */
424 /** tile coding parameters */
430 /** enables writing of EPC in MH, thus activating JPWL */
432 /** enables writing of EPB, in case of activated JPWL */
434 /** enables writing of ESD, in case of activated JPWL */
436 /** enables writing of informative techniques of ESD, in case of activated JPWL */
438 /** enables writing of RED, in case of activated JPWL */
440 /** error protection method for MH (0,1,16,32,37-128) */
442 /** tile number of header protection specification (>=0) */
443 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
444 /** error protection methods for TPHs (0,1,16,32,37-128) */
445 int hprot_TPH[JPWL_MAX_NO_TILESPECS];
446 /** tile number of packet protection specification (>=0) */
447 int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
448 /** packet number of packet protection specification (>=0) */
449 int pprot_packno[JPWL_MAX_NO_PACKSPECS];
450 /** error protection methods for packets (0,1,16,32,37-128) */
451 int pprot[JPWL_MAX_NO_PACKSPECS];
452 /** enables writing of ESD, (0/2/4 bytes) */
454 /** sensitivity addressing size (0=auto/2/4 bytes) */
456 /** sensitivity range (0-3) */
458 /** sensitivity method for MH (-1,0-7) */
460 /** tile number of sensitivity specification (>=0) */
461 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
462 /** sensitivity methods for TPHs (-1,0-7) */
463 int sens_TPH[JPWL_MAX_NO_TILESPECS];
464 /** enables JPWL correction at the decoder */
466 /** expected number of components at the decoder */
468 /** maximum number of tiles at the decoder */
470 #endif /* USE_JPWL */
474 typedef struct opj_encoding_param
476 /** Digital cinema profile*/
477 OPJ_CINEMA_MODE m_cinema;
478 /** Maximum rate for each component. If == 0, component size limitation is not considered */
479 OPJ_UINT32 m_max_comp_size;
480 /** Position of tile part flag in progression order*/
483 OPJ_INT32 *m_matrice;
484 /** Flag determining tile part generation*/
486 /** allocation by rate/distortion */
487 OPJ_UINT32 m_disto_alloc : 1;
488 /** allocation by fixed layer */
489 OPJ_UINT32 m_fixed_alloc : 1;
490 /** add fixed_quality */
491 OPJ_UINT32 m_fixed_quality : 1;
492 /** Enabling Tile part generation*/
493 OPJ_UINT32 m_tp_on : 1;
495 opj_encoding_param_t;
497 typedef struct opj_decoding_param
499 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
501 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
504 opj_decoding_param_t;
510 typedef struct opj_cp_v2
512 /** Size of the image in bits*/
515 OPJ_RSIZ_CAPABILITIES rsiz;
517 OPJ_UINT32 tx0; // MSD see norm
519 OPJ_UINT32 ty0; // MSD see norm
526 /** number of tiles in width */
528 /** number of tiles in heigth */
534 /** packet header store there for futur use in t2_decode_packet */
536 /** size of the ppm_data*/
538 /** size of the ppm_data*/
539 OPJ_UINT32 ppm_data_read;
541 OPJ_BYTE *ppm_data_current;
543 /** packet header storage original buffer */
544 OPJ_BYTE *ppm_buffer;
545 /** pointer remaining on the first byte of the first header if ppm is used */
546 OPJ_BYTE *ppm_data_first;
547 /** Number of bytes actually stored inside the ppm_data */
548 OPJ_UINT32 ppm_data_size;
549 /** use in case of multiple marker PPM (number of info already store) */
551 /** use in case of multiple marker PPM (case on non-finished previous info) */
552 OPJ_INT32 ppm_previous;
554 /** tile coding parameters */
559 opj_decoding_param_t m_dec;
560 opj_encoding_param_t m_enc;
567 /** enables writing of EPC in MH, thus activating JPWL */
569 /** enables writing of EPB, in case of activated JPWL */
571 /** enables writing of ESD, in case of activated JPWL */
573 /** enables writing of informative techniques of ESD, in case of activated JPWL */
575 /** enables writing of RED, in case of activated JPWL */
577 /** error protection method for MH (0,1,16,32,37-128) */
579 /** tile number of header protection specification (>=0) */
580 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
581 /** error protection methods for TPHs (0,1,16,32,37-128) */
582 int hprot_TPH[JPWL_MAX_NO_TILESPECS];
583 /** tile number of packet protection specification (>=0) */
584 int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
585 /** packet number of packet protection specification (>=0) */
586 int pprot_packno[JPWL_MAX_NO_PACKSPECS];
587 /** error protection methods for packets (0,1,16,32,37-128) */
588 int pprot[JPWL_MAX_NO_PACKSPECS];
589 /** enables writing of ESD, (0/2/4 bytes) */
591 /** sensitivity addressing size (0=auto/2/4 bytes) */
593 /** sensitivity range (0-3) */
595 /** sensitivity method for MH (-1,0-7) */
597 /** tile number of sensitivity specification (>=0) */
598 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
599 /** sensitivity methods for TPHs (-1,0-7) */
600 int sens_TPH[JPWL_MAX_NO_TILESPECS];
601 /** enables JPWL correction at the decoder */
603 /** expected number of components at the decoder */
605 /** maximum number of tiles at the decoder */
607 #endif /* USE_JPWL */
609 /******** FLAGS *********/
610 /** if ppm == 1 --> there was a PPM marker*/
612 /** tells if the parameter is a coding or decoding one */
613 OPJ_UINT32 m_is_decoder : 1;
618 typedef struct opj_j2k_dec
620 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
623 * store decoding parameters common to all tiles (information like COD, COC in main header)
625 opj_tcp_v2_t *m_default_tcp;
626 OPJ_BYTE *m_header_data;
627 OPJ_UINT32 m_header_data_size;
628 /** to tell the tile part length */
629 OPJ_UINT32 m_sot_length;
630 /** Only tiles index in the correct range will be decoded.*/
631 OPJ_UINT32 m_start_tile_x;
632 OPJ_UINT32 m_start_tile_y;
633 OPJ_UINT32 m_end_tile_x;
634 OPJ_UINT32 m_end_tile_y;
635 /** to tell that a tile can be decoded. */
636 OPJ_UINT32 m_can_decode : 1;
637 OPJ_UINT32 m_discard_tiles : 1;
638 OPJ_UINT32 m_skip_data : 1;
642 typedef struct opj_j2k_enc
644 /** Tile part number, regardless of poc, for each new poc, tp is reset to 1*/
645 OPJ_UINT32 m_current_poc_tile_part_number; // tp_num
647 /** 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.*/
648 OPJ_UINT32 m_current_tile_part_number; //cur_tp_num
651 locate the start position of the TLM marker
652 after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
654 OPJ_SIZE_T m_tlm_start;
656 * Stores the sizes of the tlm.
658 OPJ_BYTE * m_tlm_sot_offsets_buffer;
660 * The current offset of the tlm buffer.
662 OPJ_BYTE * m_tlm_sot_offsets_current;
664 /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
665 /** used in TLMmarker*/
666 OPJ_UINT32 m_total_tile_parts; // totnum_tp
668 /* encoded data for a tile */
669 OPJ_BYTE * m_encoded_tile_data;
671 /* size of the encoded_data */
672 OPJ_UINT32 m_encoded_tile_size;
674 /* encoded data for a tile */
675 OPJ_BYTE * m_header_tile_data;
677 /* size of the encoded_data */
678 OPJ_UINT32 m_header_tile_data_size;
684 JPEG-2000 codestream reader/writer
686 typedef struct opj_j2k {
688 opj_common_ptr cinfo;
690 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
692 /** number of the tile curently concern by coding/decoding */
694 /** Tile part number*/
696 /** Tilepart number currently coding*/
698 /** Total number of tileparts of the current tile*/
701 locate the start position of the TLM marker
702 after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
705 /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
706 /** used in TLMmarker*/
709 locate the position of the end of the tile in the codestream,
710 used to detect a truncated codestream (in j2k_read_sod)
714 locate the start position of the SOT marker of the current coded tile:
715 after encoding the tile, a jump (in j2k_write_sod) is done to the SOT marker to store the value of its length.
720 as the J2K-file is written in several parts during encoding,
721 it enables to make the right correction in position return by cio_tell
724 /** array used to store the data of each tile */
725 unsigned char **tile_data;
726 /** array used to store the length of each tile */
730 store decoding parameters common to all tiles (information like COD, COC in main header)
732 opj_tcp_t *default_tcp;
733 /** pointer to the encoded / decoded image */
735 /** pointer to the coding parameters */
737 /** helper used to write the index file */
738 opj_codestream_info_t *cstr_info;
739 /** pointer to the byte i/o stream */
745 JPEG-2000 codestream reader/writer
747 typedef struct opj_j2k_v2
749 /* J2K codestream is decoded*/
750 opj_bool m_is_decoder;
755 opj_j2k_dec_t m_decoder;
756 opj_j2k_enc_t m_encoder;
760 /** pointer to the encoded / decoded image */
761 //opj_image_t *m_image;
762 opj_image_t* m_image;
764 /** Coding parameters */
767 /** the list of procedures to exec **/
768 struct opj_procedure_list * m_procedure_list;
770 /** the list of validation procedures to follow to make sure the code is valid **/
771 struct opj_procedure_list * m_validation_list;
773 /** helper used to write the index file */
774 opj_codestream_index_t *cstr_index;
776 /** number of the tile curently concern by coding/decoding */
777 OPJ_UINT32 m_current_tile_number;
779 /** the current tile coder/decoder **/
780 struct opj_tcd_v2 * m_tcd;
781 //opj_tcd_v2_t * m_tcd;
791 /** @name Exported functions */
793 /* ----------------------------------------------------------------------- */
795 Creates a J2K decompression structure
796 @param cinfo Codec context info
797 @return Returns a handle to a J2K decompressor if successful, returns NULL otherwise
799 opj_j2k_t* j2k_create_decompress(opj_common_ptr cinfo);
801 Destroy a J2K decompressor handle
802 @param j2k J2K decompressor handle to destroy
804 void j2k_destroy_decompress(opj_j2k_t *j2k);
806 Setup the decoder decoding parameters using user parameters.
807 Decoding parameters are returned in j2k->cp.
808 @param j2k J2K decompressor handle
809 @param parameters decompression parameters
811 void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
813 void j2k_setup_decoder_v2(opj_j2k_v2_t *j2k, opj_dparameters_t *parameters);
816 Decode an image from a JPEG-2000 codestream
817 @param j2k J2K decompressor handle
818 @param cio Input buffer stream
819 @param cstr_info Codestream information structure if required, NULL otherwise
820 @return Returns a decoded image if successful, returns NULL otherwise
822 opj_image_t* j2k_decode(opj_j2k_t *j2k, opj_cio_t *cio, opj_codestream_info_t *cstr_info);
824 Decode an image form a JPT-stream (JPEG 2000, JPIP)
825 @param j2k J2K decompressor handle
826 @param cio Input buffer stream
827 @param cstr_info Codestream information structure if required, NULL otherwise
828 @return Returns a decoded image if successful, returns NULL otherwise
830 opj_image_t* j2k_decode_jpt_stream(opj_j2k_t *j2k, opj_cio_t *cio, opj_codestream_info_t *cstr_info);
832 Creates a J2K compression structure
833 @param cinfo Codec context info
834 @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
836 opj_j2k_t* j2k_create_compress(opj_common_ptr cinfo);
839 Creates a J2K compression structure
840 @param cinfo Codec context info
841 @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
843 opj_j2k_v2_t* j2k_create_compress_v2();
846 Destroy a J2K compressor handle
847 @param j2k J2K compressor handle to destroy
849 void j2k_destroy_compress(opj_j2k_t *j2k);
851 Setup the encoder parameters using the current image and using user parameters.
852 Coding parameters are returned in j2k->cp.
853 @param j2k J2K compressor handle
854 @param parameters compression parameters
855 @param image input filled image
857 void j2k_setup_encoder(opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_t *image);
859 Converts an enum type progression order to string type
861 char *j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
863 Encode an image into a JPEG-2000 codestream
864 @param j2k J2K compressor handle
865 @param cio Output buffer stream
866 @param image Image to encode
867 @param cstr_info Codestream information structure if required, NULL otherwise
868 @return Returns true if successful, returns false otherwise
870 opj_bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t *cstr_info);
872 /* ----------------------------------------------------------------------- */
878 * Ends the decompression procedures and possibiliy add data to be read after the
881 opj_bool j2k_end_decompress(opj_j2k_v2_t *j2k, struct opj_stream_private *cio, struct opj_event_mgr * p_manager);
884 * Reads a jpeg2000 codestream header structure.
886 * @param cio the stream to read data from.
887 * @param p_j2k the jpeg2000 codec.
888 * @param p_manager the user event manager.
890 * @return true if the box is valid.
892 opj_bool j2k_read_header( struct opj_stream_private *p_stream,
894 opj_image_t* p_image,
895 struct opj_event_mgr* p_manager );
899 * Destroys a jpeg2000 codec.
901 * @param p_j2k the jpeg20000 structure to destroy.
903 void j2k_destroy (opj_j2k_v2_t *p_j2k);
907 * @param p_j2k the jpeg2000 codec.
908 * @param p_stream the stream to write data to.
909 * @param p_manager the user event manager.
911 opj_bool j2k_decode_tile (
912 opj_j2k_v2_t * p_j2k,
913 OPJ_UINT32 p_tile_index,
915 OPJ_UINT32 p_data_size,
916 struct opj_stream_private *p_stream,
917 struct opj_event_mgr * p_manager
921 * Reads a tile header.
922 * @param p_j2k the jpeg2000 codec.
923 * @param p_stream the stream to write data to.
924 * @param p_manager the user event manager.
926 opj_bool j2k_read_tile_header (
927 opj_j2k_v2_t * p_j2k,
928 OPJ_UINT32 * p_tile_index,
929 OPJ_UINT32 * p_data_size,
930 OPJ_INT32 * p_tile_x0,
931 OPJ_INT32 * p_tile_y0,
932 OPJ_INT32 * p_tile_x1,
933 OPJ_INT32 * p_tile_y1,
934 OPJ_UINT32 * p_nb_comps,
936 struct opj_stream_private *p_stream,
937 struct opj_event_mgr * p_manager
942 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading.
944 * @param p_j2k the jpeg2000 codec.
945 * @param p_start_x the left position of the rectangle to decode (in image coordinates).
946 * @param p_end_x the right position of the rectangle to decode (in image coordinates).
947 * @param p_start_y the up position of the rectangle to decode (in image coordinates).
948 * @param p_end_y the bottom position of the rectangle to decode (in image coordinates).
949 * @param p_manager the user event manager
951 * @return true if the area could be set.
953 opj_bool j2k_set_decode_area( opj_j2k_v2_t *p_j2k,
954 OPJ_INT32 p_start_x, OPJ_INT32 p_start_y,
955 OPJ_INT32 p_end_x, OPJ_INT32 p_end_y,
956 struct opj_event_mgr * p_manager );
959 * Creates a J2K decompression structure.
961 * @return a handle to a J2K decompressor if successful, NULL otherwise.
963 opj_j2k_v2_t* j2k_create_decompress_v2();
967 * Dump some elements from the J2K decompression structure .
969 *@param p_j2k the jpeg2000 codec.
970 *@param flag flag to describe what elments are dump.
971 *@param out_stream output stream where dump the elements.
974 void j2k_dump (opj_j2k_v2_t* p_j2k, OPJ_INT32 flag, FILE* out_stream);
979 * Dump an image header structure.
981 *@param img_header the image header to dump.
982 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
983 *@param out_stream output stream where dump the elements.
985 void j2k_dump_image_header(opj_image_t* image, opj_bool dev_dump_flag, FILE* out_stream);
988 * Dump a component image header structure.
990 *@param comp_header the component image header to dump.
991 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function
992 *@param out_stream output stream where dump the elements.
994 void j2k_dump_image_comp_header(opj_image_comp_t* comp, opj_bool dev_dump_flag, FILE* out_stream);
997 * Get the codestream info from a JPEG2000 codec.
999 *@param p_j2k the component image header to dump.
1001 *@return the codestream information extract from the jpg2000 codec
1003 opj_codestream_info_v2_t* j2k_get_cstr_info(opj_j2k_v2_t* p_j2k);
1006 * Get the codestream index from a JPEG2000 codec.
1008 *@param p_j2k the component image header to dump.
1010 *@return the codestream index extract from the jpg2000 codec
1012 opj_codestream_index_t* j2k_get_cstr_index(opj_j2k_v2_t* p_j2k);
1015 * Decode an image from a JPEG-2000 codestream
1016 * @param j2k J2K decompressor handle
1017 * @param cio Input buffer stream
1018 * @param cstr_info Codestream information structure if required, NULL otherwise
1019 * @return Returns a decoded image if successful, returns NULL otherwise
1021 opj_bool j2k_decode_v2(opj_j2k_v2_t *j2k, struct opj_stream_private *cio, opj_image_t* p_image, opj_event_mgr_t * p_manager);
1024 #endif /* __J2K_H */