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
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12 * modification, are permitted provided that the following conditions
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15 * notice, this list of conditions and the following disclaimer.
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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
49 #define J2K_CCP_CBLKSTY_RESET 0x02
50 #define J2K_CCP_CBLKSTY_TERMALL 0x04
51 #define J2K_CCP_CBLKSTY_VSC 0x08
52 #define J2K_CCP_CBLKSTY_PTERM 0x10
53 #define J2K_CCP_CBLKSTY_SEGSYM 0x20
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 */
82 #define J2K_MS_EPC 0xff68 /**< EPC marker value (Part11) */
83 #define J2K_MS_EPB 0xff66 /**< EPB marker value (Part11) */
84 #define J2K_MS_ESD 0xff67 /**< ESD marker value (Part11) */
85 #define J2K_MS_RED 0xff69 /**< RED marker value (Part11) */
89 /* ----------------------------------------------------------------------- */
92 Values that specify the status of the decoding process when decoding the main header.
93 These values may be combined with a | operator.
95 typedef enum J2K_STATUS {
96 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
97 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
98 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
99 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
100 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
101 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
102 J2K_STATE_NEOC = 0x0040 /**< the decoding process must not expect a EOC marker because the codestream is truncated */
105 /* ----------------------------------------------------------------------- */
108 Quantization stepsize
110 typedef struct opj_stepsize {
118 Tile-component coding parameters
120 typedef struct opj_tccp {
123 /** number of resolutions */
125 /** code-blocks width */
127 /** code-blocks height */
129 /** code-block coding style */
131 /** discrete wavelet transform identifier */
133 /** quantisation style */
135 /** stepsizes used for quantization */
136 opj_stepsize_t stepsizes[J2K_MAXBANDS];
137 /** number of guard bits */
139 /** Region Of Interest shift */
141 /** precinct width */
142 int prcw[J2K_MAXRLVLS];
143 /** precinct height */
144 int prch[J2K_MAXRLVLS];
148 Tile coding parameters :
149 this structure is used to store coding/decoding parameters common to all
150 tiles (information like COD, COC in main header)
152 typedef struct opj_tcp {
153 /** 1 : first part-tile of a tile */
157 /** progression order */
159 /** number of layers */
161 /** multi-component transform identifier */
163 /** rates of layers */
165 /** number of progression order changes */
167 /** indicates if a POC marker has been used O:NO, 1:YES */
169 /** progression order changes */
171 /** packet header store there for futur use in t2_decode_packet */
172 unsigned char *ppt_data;
173 /** pointer remaining on the first byte of the first header if ppt is used */
174 unsigned char *ppt_data_first;
175 /** If ppt == 1 --> there was a PPT marker for the present tile */
177 /** used in case of multiple marker PPT (number of info already stored) */
181 /** add fixed_quality */
182 float distoratio[100];
183 /** tile-component coding parameters */
190 typedef struct opj_cp {
191 /** Digital cinema profile*/
192 OPJ_CINEMA_MODE cinema;
193 /** Size of the image in bits*/
196 OPJ_RSIZ_CAPABILITIES rsiz;
197 /** Enabling Tile part generation*/
199 /** Flag determining tile part generation*/
201 /** Position of tile part flag in progression order*/
203 /** allocation by rate/distortion */
205 /** allocation by fixed layer */
207 /** add fixed_quality */
209 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
211 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
213 /** if == NO_LIMITATION, decode entire codestream; if == LIMIT_TO_MAIN_HEADER then only decode the main header */
214 OPJ_LIMIT_DECODING limit_decoding;
215 /** 0 = no index || 1 = index */
225 /** comment for coding */
227 /** number of tiles in width */
229 /** number of tiles in heigth */
231 /** ID number of the tiles present in the codestream */
233 /** size of the vector tileno */
235 /** packet header store there for futur use in t2_decode_packet */
236 unsigned char *ppm_data;
237 /** pointer remaining on the first byte of the first header if ppm is used */
238 unsigned char *ppm_data_first;
239 /** if ppm == 1 --> there was a PPM marker for the present tile */
241 /** use in case of multiple marker PPM (number of info already store) */
243 /** use in case of multiple marker PPM (case on non-finished previous info) */
247 /** tile coding parameters */
253 /** enables writing of EPC in MH, thus activating JPWL */
255 /** enables writing of EPB, in case of activated JPWL */
257 /** enables writing of ESD, in case of activated JPWL */
259 /** enables writing of informative techniques of ESD, in case of activated JPWL */
261 /** enables writing of RED, in case of activated JPWL */
263 /** error protection method for MH (0,1,16,32,37-128) */
265 /** tile number of header protection specification (>=0) */
266 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
267 /** error protection methods for TPHs (0,1,16,32,37-128) */
268 int hprot_TPH[JPWL_MAX_NO_TILESPECS];
269 /** tile number of packet protection specification (>=0) */
270 int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
271 /** packet number of packet protection specification (>=0) */
272 int pprot_packno[JPWL_MAX_NO_PACKSPECS];
273 /** error protection methods for packets (0,1,16,32,37-128) */
274 int pprot[JPWL_MAX_NO_PACKSPECS];
275 /** enables writing of ESD, (0/2/4 bytes) */
277 /** sensitivity addressing size (0=auto/2/4 bytes) */
279 /** sensitivity range (0-3) */
281 /** sensitivity method for MH (-1,0-7) */
283 /** tile number of sensitivity specification (>=0) */
284 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
285 /** sensitivity methods for TPHs (-1,0-7) */
286 int sens_TPH[JPWL_MAX_NO_TILESPECS];
287 /** enables JPWL correction at the decoder */
289 /** expected number of components at the decoder */
291 /** maximum number of tiles at the decoder */
293 #endif /* USE_JPWL */
298 Information concerning a packet inside tile
300 typedef struct opj_packet_info {
301 /** start position */
305 /** ADD for Marcela */
310 Index structure : information regarding tiles inside image
312 typedef struct opj_tile_info {
313 /** value of thresh for each layer by tile cfr. Marcela */
315 /** number of tile */
317 /** start position */
319 /** end position of the header */
323 /** precinct number for each resolution level (width) */
325 /** precinct number for each resolution level (height) */
327 /** precinct size (in power of 2), in X for each resolution level */
329 /** precinct size (in power of 2), in Y for each resolution level */
331 /** information concerning packets inside tile */
332 opj_packet_info_t *packet;
333 /** add fixed_quality */
335 /** add fixed_quality */
342 typedef struct opj_image_info {
343 /** 0 = no index || 1 = index */
345 /** maximum distortion reduction on the whole image (add for Marcela) */
349 /** writing the packet in the index with t2_encode_packets */
355 /** progression order */
357 /** tile size in x */
359 /** tile size in y */
365 /** number of tiles in X */
367 /** number of tiles in Y */
369 /** component numbers */
371 /** number of layer */
373 /** number of decomposition */
375 /** main header position */
377 /** codestream's size */
379 /** information regarding tiles inside image */
380 opj_tile_info_t *tile;
384 JPEG-2000 codestream reader/writer
386 typedef struct opj_j2k {
388 opj_common_ptr cinfo;
390 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
392 /** number of the tile curently concern by coding/decoding */
394 /** Tile part number*/
396 /** Tilepart number currently coding*/
398 /** Total number of tileparts of the current tile*/
401 locate the start position of the TLM marker
402 after encoding the tilepart, a jump (in j2k_write_sod) is done to the TLM marker to store the value of its length.
405 /** Total num of tile parts in whole image = num tiles* num tileparts in each tile*/
406 /** used in TLMmarker*/
409 locate the position of the end of the tile in the codestream,
410 used to detect a truncated codestream (in j2k_read_sod)
414 locate the start position of the SOT marker of the current coded tile:
415 after encoding the tile, a jump (in j2k_write_sod) is done to the SOT marker to store the value of its length.
420 as the J2K-file is written in several parts during encoding,
421 it enables to make the right correction in position return by cio_tell
424 /** array used to store the data of each tile */
425 unsigned char **tile_data;
426 /** array used to store the length of each tile */
430 store decoding parameters common to all tiles (information like COD, COC in main header)
432 opj_tcp_t *default_tcp;
433 /** pointer to the encoded / decoded image */
435 /** pointer to the coding parameters */
437 /** helper used to write the index file */
438 opj_image_info_t *image_info;
439 /** pointer to the byte i/o stream */
443 /** @name Exported functions */
445 /* ----------------------------------------------------------------------- */
447 Creates a J2K decompression structure
448 @param cinfo Codec context info
449 @return Returns a handle to a J2K decompressor if successful, returns NULL otherwise
451 opj_j2k_t* j2k_create_decompress(opj_common_ptr cinfo);
453 Destroy a J2K decompressor handle
454 @param j2k J2K decompressor handle to destroy
456 void j2k_destroy_decompress(opj_j2k_t *j2k);
458 Setup the decoder decoding parameters using user parameters.
459 Decoding parameters are returned in j2k->cp.
460 @param j2k J2K decompressor handle
461 @param parameters decompression parameters
463 void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
465 Decode an image from a JPEG-2000 codestream
466 @param j2k J2K decompressor handle
467 @param cio Input buffer stream
468 @return Returns a decoded image if successful, returns NULL otherwise
470 opj_image_t* j2k_decode(opj_j2k_t *j2k, opj_cio_t *cio);
472 Decode an image form a JPT-stream (JPEG 2000, JPIP)
473 @param j2k J2K decompressor handle
474 @param cio Input buffer stream
475 @return Returns a decoded image if successful, returns NULL otherwise
477 opj_image_t* j2k_decode_jpt_stream(opj_j2k_t *j2k, opj_cio_t *cio);
479 Creates a J2K compression structure
480 @param cinfo Codec context info
481 @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
483 opj_j2k_t* j2k_create_compress(opj_common_ptr cinfo);
485 Destroy a J2K compressor handle
486 @param j2k J2K compressor handle to destroy
488 void j2k_destroy_compress(opj_j2k_t *j2k);
490 Setup the encoder parameters using the current image and using user parameters.
491 Coding parameters are returned in j2k->cp.
492 @param j2k J2K compressor handle
493 @param parameters compression parameters
494 @param image input filled image
496 void j2k_setup_encoder(opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_t *image);
498 Converts an enum type progression order to string type
500 char *j2k_convert_progression_order(OPJ_PROG_ORDER prg_order);
502 Encode an image into a JPEG-2000 codestream
503 @param j2k J2K compressor handle
504 @param cio Output buffer stream
505 @param image Image to encode
506 @param index Name of the index file if required, NULL otherwise
507 @return Returns true if successful, returns false otherwise
509 bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, char *index);
510 /* ----------------------------------------------------------------------- */