1 /* 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. 6 * 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 18 * 19 * All rights reserved. 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS' 31 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 34 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 40 * POSSIBILITY OF SUCH DAMAGE. 41 */ 42 #ifndef __J2K_H 43 #define __J2K_H 44 /** 45 @file j2k.h 46 @brief The JPEG-2000 Codestream Reader/Writer (J2K) 47 48 The functions in J2K.C have for goal to read/write the several parts of the codestream: markers and data. 49 */ 50 51 /** @defgroup J2K J2K - JPEG-2000 codestream reader/writer */ 52 /*@{*/ 53 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 67 68 #define OPJ_J2K_DEFAULT_CBLK_DATA_SIZE 8192 69 70 /* ----------------------------------------------------------------------- */ 71 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_SIZ 0xff51 /**< SIZ marker value */ 77 #define J2K_MS_COD 0xff52 /**< COD marker value */ 78 #define J2K_MS_COC 0xff53 /**< COC marker value */ 79 #define J2K_MS_RGN 0xff5e /**< RGN marker value */ 80 #define J2K_MS_QCD 0xff5c /**< QCD marker value */ 81 #define J2K_MS_QCC 0xff5d /**< QCC marker value */ 82 #define J2K_MS_POC 0xff5f /**< POC marker value */ 83 #define J2K_MS_TLM 0xff55 /**< TLM marker value */ 84 #define J2K_MS_PLM 0xff57 /**< PLM marker value */ 85 #define J2K_MS_PLT 0xff58 /**< PLT marker value */ 86 #define J2K_MS_PPM 0xff60 /**< PPM marker value */ 87 #define J2K_MS_PPT 0xff61 /**< PPT marker value */ 88 #define J2K_MS_SOP 0xff91 /**< SOP marker value */ 89 #define J2K_MS_EPH 0xff92 /**< EPH marker value */ 90 #define J2K_MS_CRG 0xff63 /**< CRG marker value */ 91 #define J2K_MS_COM 0xff64 /**< COM marker value */ 92 #define J2K_MS_CBD 0xff78 /**< CBD marker value */ 93 #define J2K_MS_MCC 0xff75 /**< MCC marker value */ 94 #define J2K_MS_MCT 0xff74 /**< MCT marker value */ 95 #define J2K_MS_MCO 0xff77 /**< MCO marker value */ 96 97 #define J2K_MS_UNK 0 /**< UNKNOWN marker value */ 98 99 /* UniPG>> */ 100 #ifdef USE_JPWL 101 #define J2K_MS_EPC 0xff68 /**< EPC marker value (Part 11: JPEG 2000 for Wireless) */ 102 #define J2K_MS_EPB 0xff66 /**< EPB marker value (Part 11: JPEG 2000 for Wireless) */ 103 #define J2K_MS_ESD 0xff67 /**< ESD marker value (Part 11: JPEG 2000 for Wireless) */ 104 #define J2K_MS_RED 0xff69 /**< RED marker value (Part 11: JPEG 2000 for Wireless) */ 105 #endif /* USE_JPWL */ 106 #ifdef USE_JPSEC 107 #define J2K_MS_SEC 0xff65 /**< SEC marker value (Part 8: Secure JPEG 2000) */ 108 #define J2K_MS_INSEC 0xff94 /**< INSEC marker value (Part 8: Secure JPEG 2000) */ 109 #endif /* USE_JPSEC */ 110 /* <<UniPG */ 111 112 /* ----------------------------------------------------------------------- */ 113 114 /** 115 * Values that specify the status of the decoding process when decoding the main header. 116 * These values may be combined with a | operator. 117 * */ 118 typedef enum J2K_STATUS { 119 J2K_STATE_NONE = 0x0000, /**< a SOC marker is expected */ 120 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */ 121 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */ 122 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */ 123 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */ 124 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */ 125 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */ 126 J2K_STATE_NEOC = 0x0040, /**< the decoding process must not expect a EOC marker because the codestream is truncated */ 127 128 J2K_STATE_EOC = 0x0100, /**< the decoding process has encountered the EOC marker */ 129 J2K_STATE_ERR = 0x8000 /**< the decoding process has encountered an error (FIXME warning V1 = 0x0080)*/ 130 } J2K_STATUS; 131 132 /** 133 * Type of elements storing in the MCT data 134 */ 135 typedef enum MCT_ELEMENT_TYPE 136 { 137 MCT_TYPE_INT16 = 0, /** MCT data is stored as signed shorts*/ 138 MCT_TYPE_INT32 = 1, /** MCT data is stored as signed integers*/ 139 MCT_TYPE_FLOAT = 2, /** MCT data is stored as floats*/ 140 MCT_TYPE_DOUBLE = 3 /** MCT data is stored as doubles*/ 141 } J2K_MCT_ELEMENT_TYPE; 142 143 /** 144 * Type of MCT array 145 */ 146 typedef enum MCT_ARRAY_TYPE 147 { 148 MCT_TYPE_DEPENDENCY = 0, 149 MCT_TYPE_DECORRELATION = 1, 150 MCT_TYPE_OFFSET = 2 151 } J2K_MCT_ARRAY_TYPE; 152 153 /* ----------------------------------------------------------------------- */ 154 155 /** 156 T2 encoding mode 157 */ 158 typedef enum T2_MODE { 159 THRESH_CALC = 0, /** Function called in Rate allocation process*/ 160 FINAL_PASS = 1 /** Function called in Tier 2 process*/ 161 }J2K_T2_MODE; 162 163 /** 164 * Quantization stepsize 165 */ 166 typedef struct opj_stepsize { 167 /** exponent */ 168 OPJ_INT32 expn; 169 /** mantissa */ 170 OPJ_INT32 mant; 171 } opj_stepsize_t; 172 173 /** 174 Tile-component coding parameters 175 */ 176 typedef struct opj_tccp 177 { 178 /** coding style */ 179 OPJ_UINT32 csty; 180 /** number of resolutions */ 181 OPJ_UINT32 numresolutions; 182 /** code-blocks width */ 183 OPJ_UINT32 cblkw; 184 /** code-blocks height */ 185 OPJ_UINT32 cblkh; 186 /** code-block coding style */ 187 OPJ_UINT32 cblksty; 188 /** discrete wavelet transform identifier */ 189 OPJ_UINT32 qmfbid; 190 /** quantisation style */ 191 OPJ_UINT32 qntsty; 192 /** stepsizes used for quantization */ 193 opj_stepsize_t stepsizes[OPJ_J2K_MAXBANDS]; 194 /** number of guard bits */ 195 OPJ_UINT32 numgbits; 196 /** Region Of Interest shift */ 197 OPJ_INT32 roishift; 198 /** precinct width */ 199 OPJ_UINT32 prcw[OPJ_J2K_MAXRLVLS]; 200 /** precinct height */ 201 OPJ_UINT32 prch[OPJ_J2K_MAXRLVLS]; 202 /** the dc_level_shift **/ 203 OPJ_INT32 m_dc_level_shift; 204 } 205 opj_tccp_t; 206 207 208 209 /** 210 * FIXME DOC 211 */ 212 typedef struct opj_mct_data 213 { 214 J2K_MCT_ELEMENT_TYPE m_element_type; 215 J2K_MCT_ARRAY_TYPE m_array_type; 216 OPJ_UINT32 m_index; 217 OPJ_BYTE * m_data; 218 OPJ_UINT32 m_data_size; 219 } 220 opj_mct_data_t; 221 222 /** 223 * FIXME DOC 224 */ 225 typedef struct opj_simple_mcc_decorrelation_data 226 { 227 OPJ_UINT32 m_index; 228 OPJ_UINT32 m_nb_comps; 229 opj_mct_data_t * m_decorrelation_array; 230 opj_mct_data_t * m_offset_array; 231 OPJ_UINT32 m_is_irreversible : 1; 232 } 233 opj_simple_mcc_decorrelation_data_t; 234 235 typedef struct opj_ppx_struct 236 { 237 OPJ_BYTE* m_data; /* m_data == NULL => Zppx not read yet */ 238 OPJ_UINT32 m_data_size; 239 } opj_ppx; 240 241 /** 242 Tile coding parameters : 243 this structure is used to store coding/decoding parameters common to all 244 tiles (information like COD, COC in main header) 245 */ 246 typedef struct opj_tcp 247 { 248 /** coding style */ 249 OPJ_UINT32 csty; 250 /** progression order */ 251 OPJ_PROG_ORDER prg; 252 /** number of layers */ 253 OPJ_UINT32 numlayers; 254 OPJ_UINT32 num_layers_to_decode; 255 /** multi-component transform identifier */ 256 OPJ_UINT32 mct; 257 /** rates of layers */ 258 OPJ_FLOAT32 rates[100]; 259 /** number of progression order changes */ 260 OPJ_UINT32 numpocs; 261 /** progression order changes */ 262 opj_poc_t pocs[32]; 263 264 /** number of ppt markers (reserved size) */ 265 OPJ_UINT32 ppt_markers_count; 266 /** ppt markers data (table indexed by Zppt) */ 267 opj_ppx* ppt_markers; 268 269 /** packet header store there for future use in t2_decode_packet */ 270 OPJ_BYTE *ppt_data; 271 /** used to keep a track of the allocated memory */ 272 OPJ_BYTE *ppt_buffer; 273 /** Number of bytes stored inside ppt_data*/ 274 OPJ_UINT32 ppt_data_size; 275 /** size of ppt_data*/ 276 OPJ_UINT32 ppt_len; 277 /** add fixed_quality */ 278 OPJ_FLOAT32 distoratio[100]; 279 /** tile-component coding parameters */ 280 opj_tccp_t *tccps; 281 /** number of tile parts for the tile. */ 282 OPJ_UINT32 m_nb_tile_parts; 283 /** data for the tile */ 284 OPJ_BYTE * m_data; 285 /** size of data */ 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; 293 /** mct records */ 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; 299 /** mcc 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; 305 306 307 /***** FLAGS *******/ 308 /** If cod == 1 --> there was a COD marker for the present tile */ 309 OPJ_UINT32 cod : 1; 310 /** If ppt == 1 --> there was a PPT marker for the present tile */ 311 OPJ_UINT32 ppt : 1; 312 /** indicates if a POC marker has been used O:NO, 1:YES */ 313 OPJ_UINT32 POC : 1; 314 } opj_tcp_t; 315 316 317 318 319 typedef struct opj_encoding_param 320 { 321 /** Maximum rate for each component. If == 0, component size limitation is not considered */ 322 OPJ_UINT32 m_max_comp_size; 323 /** Position of tile part flag in progression order*/ 324 OPJ_INT32 m_tp_pos; 325 /** fixed layer */ 326 OPJ_INT32 *m_matrice; 327 /** Flag determining tile part generation*/ 328 OPJ_BYTE m_tp_flag; 329 /** allocation by rate/distortion */ 330 OPJ_UINT32 m_disto_alloc : 1; 331 /** allocation by fixed layer */ 332 OPJ_UINT32 m_fixed_alloc : 1; 333 /** add fixed_quality */ 334 OPJ_UINT32 m_fixed_quality : 1; 335 /** Enabling Tile part generation*/ 336 OPJ_UINT32 m_tp_on : 1; 337 } 338 opj_encoding_param_t; 339 340 typedef struct opj_decoding_param 341 { 342 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */ 343 OPJ_UINT32 m_reduce; 344 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */ 345 OPJ_UINT32 m_layer; 346 } 347 opj_decoding_param_t; 348 349 350 /** 351 * Coding parameters 352 */ 353 typedef struct opj_cp 354 { 355 /** Size of the image in bits*/ 356 /*int img_size;*/ 357 /** Rsiz*/ 358 OPJ_UINT16 rsiz; 359 /** XTOsiz */ 360 OPJ_UINT32 tx0; /* MSD see norm */ 361 /** YTOsiz */ 362 OPJ_UINT32 ty0; /* MSD see norm */ 363 /** XTsiz */ 364 OPJ_UINT32 tdx; 365 /** YTsiz */ 366 OPJ_UINT32 tdy; 367 /** comment */ 368 OPJ_CHAR *comment; 369 /** number of tiles in width */ 370 OPJ_UINT32 tw; 371 /** number of tiles in heigth */ 372 OPJ_UINT32 th; 373 374 /** number of ppm markers (reserved size) */ 375 OPJ_UINT32 ppm_markers_count; 376 /** ppm markers data (table indexed by Zppm) */ 377 opj_ppx* ppm_markers; 378 379 /** packet header store there for future use in t2_decode_packet */ 380 OPJ_BYTE *ppm_data; 381 /** size of the ppm_data*/ 382 OPJ_UINT32 ppm_len; 383 /** size of the ppm_data*/ 384 OPJ_UINT32 ppm_data_read; 385 386 OPJ_BYTE *ppm_data_current; 387 388 /** packet header storage original buffer */ 389 OPJ_BYTE *ppm_buffer; 390 /** pointer remaining on the first byte of the first header if ppm is used */ 391 OPJ_BYTE *ppm_data_first; 392 /** Number of bytes actually stored inside the ppm_data */ 393 OPJ_UINT32 ppm_data_size; 394 /** use in case of multiple marker PPM (number of info already store) */ 395 OPJ_INT32 ppm_store; 396 /** use in case of multiple marker PPM (case on non-finished previous info) */ 397 OPJ_INT32 ppm_previous; 398 399 /** tile coding parameters */ 400 opj_tcp_t *tcps; 401 402 union 403 { 404 opj_decoding_param_t m_dec; 405 opj_encoding_param_t m_enc; 406 } 407 m_specific_param; 408 409 410 /* UniPG>> */ 411 #ifdef USE_JPWL 412 /** enables writing of EPC in MH, thus activating JPWL */ 413 OPJ_BOOL epc_on; 414 /** enables writing of EPB, in case of activated JPWL */ 415 OPJ_BOOL epb_on; 416 /** enables writing of ESD, in case of activated JPWL */ 417 OPJ_BOOL esd_on; 418 /** enables writing of informative techniques of ESD, in case of activated JPWL */ 419 OPJ_BOOL info_on; 420 /** enables writing of RED, in case of activated JPWL */ 421 OPJ_BOOL red_on; 422 /** error protection method for MH (0,1,16,32,37-128) */ 423 int hprot_MH; 424 /** tile number of header protection specification (>=0) */ 425 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS]; 426 /** error protection methods for TPHs (0,1,16,32,37-128) */ 427 int hprot_TPH[JPWL_MAX_NO_TILESPECS]; 428 /** tile number of packet protection specification (>=0) */ 429 int pprot_tileno[JPWL_MAX_NO_PACKSPECS]; 430 /** packet number of packet protection specification (>=0) */ 431 int pprot_packno[JPWL_MAX_NO_PACKSPECS]; 432 /** error protection methods for packets (0,1,16,32,37-128) */ 433 int pprot[JPWL_MAX_NO_PACKSPECS]; 434 /** enables writing of ESD, (0/2/4 bytes) */ 435 int sens_size; 436 /** sensitivity addressing size (0=auto/2/4 bytes) */ 437 int sens_addr; 438 /** sensitivity range (0-3) */ 439 int sens_range; 440 /** sensitivity method for MH (-1,0-7) */ 441 int sens_MH; 442 /** tile number of sensitivity specification (>=0) */ 443 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS]; 444 /** sensitivity methods for TPHs (-1,0-7) */ 445 int sens_TPH[JPWL_MAX_NO_TILESPECS]; 446 /** enables JPWL correction at the decoder */ 447 OPJ_BOOL correct; 448 /** expected number of components at the decoder */ 449 int exp_comps; 450 /** maximum number of tiles at the decoder */ 451 OPJ_UINT32 max_tiles; 452 #endif /* USE_JPWL */ 453 454 /******** FLAGS *********/ 455 /** if ppm == 1 --> there was a PPM marker*/ 456 OPJ_UINT32 ppm : 1; 457 /** tells if the parameter is a coding or decoding one */ 458 OPJ_UINT32 m_is_decoder : 1; 459 /* <<UniPG */ 460 } opj_cp_t; 461 462 463 typedef struct opj_j2k_dec 464 { 465 /** locate in which part of the codestream the decoder is (main header, tile header, end) */ 466 OPJ_UINT32 m_state; 467 /** 468 * store decoding parameters common to all tiles (information like COD, COC in main header) 469 */ 470 opj_tcp_t *m_default_tcp; 471 OPJ_BYTE *m_header_data; 472 OPJ_UINT32 m_header_data_size; 473 /** to tell the tile part length */ 474 OPJ_UINT32 m_sot_length; 475 /** Only tiles index in the correct range will be decoded.*/ 476 OPJ_UINT32 m_start_tile_x; 477 OPJ_UINT32 m_start_tile_y; 478 OPJ_UINT32 m_end_tile_x; 479 OPJ_UINT32 m_end_tile_y; 480 /** 481 * Decoded area set by the user 482 */ 483 OPJ_UINT32 m_DA_x0; 484 OPJ_UINT32 m_DA_y0; 485 OPJ_UINT32 m_DA_x1; 486 OPJ_UINT32 m_DA_y1; 487 488 /** Index of the tile to decode (used in get_tile) */ 489 OPJ_INT32 m_tile_ind_to_dec; 490 /** Position of the last SOT marker read */ 491 OPJ_OFF_T m_last_sot_read_pos; 492 493 /** 494 * Indicate that the current tile-part is assume as the last tile part of the codestream. 495 * It is useful in the case of PSot is equal to zero. The sot length will be compute in the 496 * SOD reader function. FIXME NOT USED for the moment 497 */ 498 OPJ_BOOL m_last_tile_part; 499 /** to tell that a tile can be decoded. */ 500 OPJ_UINT32 m_can_decode : 1; 501 OPJ_UINT32 m_discard_tiles : 1; 502 OPJ_UINT32 m_skip_data : 1; 503 /** TNsot correction : see issue 254 **/ 504 OPJ_UINT32 m_nb_tile_parts_correction_checked : 1; 505 OPJ_UINT32 m_nb_tile_parts_correction : 1; 506 507 } opj_j2k_dec_t; 508 509 typedef struct opj_j2k_enc 510 { 511 /** Tile part number, regardless of poc, for each new poc, tp is reset to 1*/ 512 OPJ_UINT32 m_current_poc_tile_part_number; /* tp_num */ 513 514 /** 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.*/ 515 OPJ_UINT32 m_current_tile_part_number; /*cur_tp_num */ 516 517 /** 518 locate the start position of the TLM marker 519 after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length. 520 */ 521 OPJ_OFF_T m_tlm_start; 522 /** 523 * Stores the sizes of the tlm. 524 */ 525 OPJ_BYTE * m_tlm_sot_offsets_buffer; 526 /** 527 * The current offset of the tlm buffer. 528 */ 529 OPJ_BYTE * m_tlm_sot_offsets_current; 530 531 /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/ 532 /** used in TLMmarker*/ 533 OPJ_UINT32 m_total_tile_parts; /* totnum_tp */ 534 535 /* encoded data for a tile */ 536 OPJ_BYTE * m_encoded_tile_data; 537 538 /* size of the encoded_data */ 539 OPJ_UINT32 m_encoded_tile_size; 540 541 /* encoded data for a tile */ 542 OPJ_BYTE * m_header_tile_data; 543 544 /* size of the encoded_data */ 545 OPJ_UINT32 m_header_tile_data_size; 546 547 548 } opj_j2k_enc_t; 549 550 551 552 struct opj_tcd; 553 /** 554 JPEG-2000 codestream reader/writer 555 */ 556 typedef struct opj_j2k 557 { 558 /* J2K codestream is decoded*/ 559 OPJ_BOOL m_is_decoder; 560 561 /* FIXME DOC*/ 562 union 563 { 564 opj_j2k_dec_t m_decoder; 565 opj_j2k_enc_t m_encoder; 566 } 567 m_specific_param; 568 569 /** pointer to the internal/private encoded / decoded image */ 570 opj_image_t* m_private_image; 571 572 /* pointer to the output image (decoded)*/ 573 opj_image_t* m_output_image; 574 575 /** Coding parameters */ 576 opj_cp_t m_cp; 577 578 /** the list of procedures to exec **/ 579 opj_procedure_list_t * m_procedure_list; 580 581 /** the list of validation procedures to follow to make sure the code is valid **/ 582 opj_procedure_list_t * m_validation_list; 583 584 /** helper used to write the index file */ 585 opj_codestream_index_t *cstr_index; 586 587 /** number of the tile curently concern by coding/decoding */ 588 OPJ_UINT32 m_current_tile_number; 589 590 /** the current tile coder/decoder **/ 591 struct opj_tcd * m_tcd; 592 } 593 opj_j2k_t; 594 595 596 597 598 /** @name Exported functions */ 599 /*@{*/ 600 /* ----------------------------------------------------------------------- */ 601 602 /** 603 Setup the decoder decoding parameters using user parameters. 604 Decoding parameters are returned in j2k->cp. 605 @param j2k J2K decompressor handle 606 @param parameters decompression parameters 607 */ 608 void opj_j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters); 609 610 /** 611 * Creates a J2K compression structure 612 * 613 * @return Returns a handle to a J2K compressor if successful, returns NULL otherwise 614 */ 615 opj_j2k_t* opj_j2k_create_compress(void); 616 617 618 OPJ_BOOL opj_j2k_setup_encoder( opj_j2k_t *p_j2k, 619 opj_cparameters_t *parameters, 620 opj_image_t *image, 621 opj_event_mgr_t * p_manager); 622 623 /** 624 Converts an enum type progression order to string type 625 */ 626 char *opj_j2k_convert_progression_order(OPJ_PROG_ORDER prg_order); 627 628 /* ----------------------------------------------------------------------- */ 629 /*@}*/ 630 631 /*@}*/ 632 633 /** 634 * Ends the decompression procedures and possibiliy add data to be read after the 635 * codestream. 636 */ 637 OPJ_BOOL opj_j2k_end_decompress(opj_j2k_t *j2k, 638 opj_stream_private_t *p_stream, 639 opj_event_mgr_t * p_manager); 640 641 /** 642 * Reads a jpeg2000 codestream header structure. 643 * 644 * @param p_stream the stream to read data from. 645 * @param p_j2k the jpeg2000 codec. 646 * @param p_image FIXME DOC 647 * @param p_manager the user event manager. 648 * 649 * @return true if the box is valid. 650 */ 651 OPJ_BOOL opj_j2k_read_header( opj_stream_private_t *p_stream, 652 opj_j2k_t* p_j2k, 653 opj_image_t** p_image, 654 opj_event_mgr_t* p_manager ); 655 656 657 /** 658 * Destroys a jpeg2000 codec. 659 * 660 * @param p_j2k the jpeg20000 structure to destroy. 661 */ 662 void opj_j2k_destroy (opj_j2k_t *p_j2k); 663 664 /** 665 * Destroys a codestream index structure. 666 * 667 * @param p_cstr_ind the codestream index parameter to destroy. 668 */ 669 void j2k_destroy_cstr_index (opj_codestream_index_t *p_cstr_ind); 670 671 /** 672 * Decode tile data. 673 * @param p_j2k the jpeg2000 codec. 674 * @param p_tile_index 675 * @param p_data FIXME DOC 676 * @param p_data_size FIXME DOC 677 * @param p_stream the stream to write data to. 678 * @param p_manager the user event manager. 679 */ 680 OPJ_BOOL opj_j2k_decode_tile ( opj_j2k_t * p_j2k, 681 OPJ_UINT32 p_tile_index, 682 OPJ_BYTE * p_data, 683 OPJ_UINT32 p_data_size, 684 opj_stream_private_t *p_stream, 685 opj_event_mgr_t * p_manager ); 686 687 /** 688 * Reads a tile header. 689 * @param p_j2k the jpeg2000 codec. 690 * @param p_tile_index FIXME DOC 691 * @param p_data_size FIXME DOC 692 * @param p_tile_x0 FIXME DOC 693 * @param p_tile_y0 FIXME DOC 694 * @param p_tile_x1 FIXME DOC 695 * @param p_tile_y1 FIXME DOC 696 * @param p_nb_comps FIXME DOC 697 * @param p_go_on FIXME DOC 698 * @param p_stream the stream to write data to. 699 * @param p_manager the user event manager. 700 */ 701 OPJ_BOOL opj_j2k_read_tile_header ( opj_j2k_t * p_j2k, 702 OPJ_UINT32 * p_tile_index, 703 OPJ_UINT32 * p_data_size, 704 OPJ_INT32 * p_tile_x0, 705 OPJ_INT32 * p_tile_y0, 706 OPJ_INT32 * p_tile_x1, 707 OPJ_INT32 * p_tile_y1, 708 OPJ_UINT32 * p_nb_comps, 709 OPJ_BOOL * p_go_on, 710 opj_stream_private_t *p_stream, 711 opj_event_mgr_t * p_manager ); 712 713 714 /** 715 * Sets the given area to be decoded. This function should be called right after opj_read_header and before any tile header reading. 716 * 717 * @param p_j2k the jpeg2000 codec. 718 * @param p_image FIXME DOC 719 * @param p_start_x the left position of the rectangle to decode (in image coordinates). 720 * @param p_start_y the up position of the rectangle to decode (in image coordinates). 721 * @param p_end_x the right position of the rectangle to decode (in image coordinates). 722 * @param p_end_y the bottom position of the rectangle to decode (in image coordinates). 723 * @param p_manager the user event manager 724 * 725 * @return true if the area could be set. 726 */ 727 OPJ_BOOL opj_j2k_set_decode_area( opj_j2k_t *p_j2k, 728 opj_image_t* p_image, 729 OPJ_INT32 p_start_x, OPJ_INT32 p_start_y, 730 OPJ_INT32 p_end_x, OPJ_INT32 p_end_y, 731 opj_event_mgr_t * p_manager ); 732 733 /** 734 * Creates a J2K decompression structure. 735 * 736 * @return a handle to a J2K decompressor if successful, NULL otherwise. 737 */ 738 opj_j2k_t* opj_j2k_create_decompress(void); 739 740 741 /** 742 * Dump some elements from the J2K decompression structure . 743 * 744 *@param p_j2k the jpeg2000 codec. 745 *@param flag flag to describe what elments are dump. 746 *@param out_stream output stream where dump the elements. 747 * 748 */ 749 void j2k_dump (opj_j2k_t* p_j2k, OPJ_INT32 flag, FILE* out_stream); 750 751 752 753 /** 754 * Dump an image header structure. 755 * 756 *@param image the image header to dump. 757 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function 758 *@param out_stream output stream where dump the elements. 759 */ 760 void j2k_dump_image_header(opj_image_t* image, OPJ_BOOL dev_dump_flag, FILE* out_stream); 761 762 /** 763 * Dump a component image header structure. 764 * 765 *@param comp the component image header to dump. 766 *@param dev_dump_flag flag to describe if we are in the case of this function is use outside j2k_dump function 767 *@param out_stream output stream where dump the elements. 768 */ 769 void j2k_dump_image_comp_header(opj_image_comp_t* comp, OPJ_BOOL dev_dump_flag, FILE* out_stream); 770 771 /** 772 * Get the codestream info from a JPEG2000 codec. 773 * 774 *@param p_j2k the component image header to dump. 775 * 776 *@return the codestream information extract from the jpg2000 codec 777 */ 778 opj_codestream_info_v2_t* j2k_get_cstr_info(opj_j2k_t* p_j2k); 779 780 /** 781 * Get the codestream index from a JPEG2000 codec. 782 * 783 *@param p_j2k the component image header to dump. 784 * 785 *@return the codestream index extract from the jpg2000 codec 786 */ 787 opj_codestream_index_t* j2k_get_cstr_index(opj_j2k_t* p_j2k); 788 789 /** 790 * Decode an image from a JPEG-2000 codestream 791 * @param j2k J2K decompressor handle 792 * @param p_stream FIXME DOC 793 * @param p_image FIXME DOC 794 * @param p_manager FIXME DOC 795 * @return FIXME DOC 796 */ 797 OPJ_BOOL opj_j2k_decode(opj_j2k_t *j2k, 798 opj_stream_private_t *p_stream, 799 opj_image_t *p_image, 800 opj_event_mgr_t *p_manager); 801 802 803 OPJ_BOOL opj_j2k_get_tile( opj_j2k_t *p_j2k, 804 opj_stream_private_t *p_stream, 805 opj_image_t* p_image, 806 opj_event_mgr_t * p_manager, 807 OPJ_UINT32 tile_index ); 808 809 OPJ_BOOL opj_j2k_set_decoded_resolution_factor(opj_j2k_t *p_j2k, 810 OPJ_UINT32 res_factor, 811 opj_event_mgr_t * p_manager); 812 813 814 /** 815 * Writes a tile. 816 * @param p_j2k the jpeg2000 codec. 817 * @param p_tile_index FIXME DOC 818 * @param p_data FIXME DOC 819 * @param p_data_size FIXME DOC 820 * @param p_stream the stream to write data to. 821 * @param p_manager the user event manager. 822 */ 823 OPJ_BOOL opj_j2k_write_tile ( opj_j2k_t * p_j2k, 824 OPJ_UINT32 p_tile_index, 825 OPJ_BYTE * p_data, 826 OPJ_UINT32 p_data_size, 827 opj_stream_private_t *p_stream, 828 opj_event_mgr_t * p_manager ); 829 830 /** 831 * Encodes an image into a JPEG-2000 codestream 832 */ 833 OPJ_BOOL opj_j2k_encode( opj_j2k_t * p_j2k, 834 opj_stream_private_t *cio, 835 opj_event_mgr_t * p_manager ); 836 837 /** 838 * Starts a compression scheme, i.e. validates the codec parameters, writes the header. 839 * 840 * @param p_j2k the jpeg2000 codec. 841 * @param p_stream the stream object. 842 * @param p_image FIXME DOC 843 * @param p_manager the user event manager. 844 * 845 * @return true if the codec is valid. 846 */ 847 OPJ_BOOL opj_j2k_start_compress(opj_j2k_t *p_j2k, 848 opj_stream_private_t *p_stream, 849 opj_image_t * p_image, 850 opj_event_mgr_t * p_manager); 851 852 /** 853 * Ends the compression procedures and possibiliy add data to be read after the 854 * codestream. 855 */ 856 OPJ_BOOL opj_j2k_end_compress( opj_j2k_t *p_j2k, 857 opj_stream_private_t *cio, 858 opj_event_mgr_t * p_manager); 859 860 OPJ_BOOL opj_j2k_setup_mct_encoding (opj_tcp_t * p_tcp, opj_image_t * p_image); 861 862 863 #endif /* __J2K_H */ 864