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
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11 * modification, are permitted provided that the following conditions
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15 * 2. Redistributions in binary form must reproduce the above copyright
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35 @brief The JPEG-2000 Codestream Reader/Writer (J2K)
37 The functions in J2K.C have for goal to read/write the several parts of the codestream: markers and data.
40 /** @defgroup J2K J2K - JPEG-2000 codestream reader/writer */
43 #define J2K_CP_CSTY_PRT 0x01
44 #define J2K_CP_CSTY_SOP 0x02
45 #define J2K_CP_CSTY_EPH 0x04
46 #define J2K_CCP_CSTY_PRT 0x01
47 #define J2K_CCP_CBLKSTY_LAZY 0x01
48 #define J2K_CCP_CBLKSTY_RESET 0x02
49 #define J2K_CCP_CBLKSTY_TERMALL 0x04
50 #define J2K_CCP_CBLKSTY_VSC 0x08
51 #define J2K_CCP_CBLKSTY_PTERM 0x10
52 #define J2K_CCP_CBLKSTY_SEGSYM 0x20
53 #define J2K_CCP_QNTSTY_NOQNT 0
54 #define J2K_CCP_QNTSTY_SIQNT 1
55 #define J2K_CCP_QNTSTY_SEQNT 2
57 /* ----------------------------------------------------------------------- */
59 #define J2K_MS_SOC 0xff4f /**< SOC marker value */
60 #define J2K_MS_SOT 0xff90 /**< SOT marker value */
61 #define J2K_MS_SOD 0xff93 /**< SOD marker value */
62 #define J2K_MS_EOC 0xffd9 /**< EOC marker value */
63 #define J2K_MS_SIZ 0xff51 /**< SIZ marker value */
64 #define J2K_MS_COD 0xff52 /**< COD marker value */
65 #define J2K_MS_COC 0xff53 /**< COC marker value */
66 #define J2K_MS_RGN 0xff5e /**< RGN marker value */
67 #define J2K_MS_QCD 0xff5c /**< QCD marker value */
68 #define J2K_MS_QCC 0xff5d /**< QCC marker value */
69 #define J2K_MS_POC 0xff5f /**< POC marker value */
70 #define J2K_MS_TLM 0xff55 /**< TLM marker value */
71 #define J2K_MS_PLM 0xff57 /**< PLM marker value */
72 #define J2K_MS_PLT 0xff58 /**< PLT marker value */
73 #define J2K_MS_PPM 0xff60 /**< PPM marker value */
74 #define J2K_MS_PPT 0xff61 /**< PPT marker value */
75 #define J2K_MS_SOP 0xff91 /**< SOP marker value */
76 #define J2K_MS_EPH 0xff92 /**< EPH marker value */
77 #define J2K_MS_CRG 0xff63 /**< CRG marker value */
78 #define J2K_MS_COM 0xff64 /**< COM marker value */
81 #define J2K_MS_EPC 0xff68 /**< EPC marker value (Part11) */
82 #define J2K_MS_EPB 0xff66 /**< EPB marker value (Part11) */
83 #define J2K_MS_ESD 0xff67 /**< ESD marker value (Part11) */
84 #define J2K_MS_RED 0xff69 /**< RED marker value (Part11) */
88 /* ----------------------------------------------------------------------- */
91 Values that specify the status of the decoding process when decoding the main header.
92 These values may be combined with a | operator.
94 typedef enum J2K_STATUS {
95 J2K_STATE_MHSOC = 0x0001, /**< a SOC marker is expected */
96 J2K_STATE_MHSIZ = 0x0002, /**< a SIZ marker is expected */
97 J2K_STATE_MH = 0x0004, /**< the decoding process is in the main header */
98 J2K_STATE_TPHSOT = 0x0008, /**< the decoding process is in a tile part header and expects a SOT marker */
99 J2K_STATE_TPH = 0x0010, /**< the decoding process is in a tile part header */
100 J2K_STATE_MT = 0x0020, /**< the EOC marker has just been read */
101 J2K_STATE_NEOC = 0x0040 /**< the decoding process must not expect a EOC marker because the codestream is truncated */
104 /* ----------------------------------------------------------------------- */
107 Quantization stepsize
109 typedef struct opj_stepsize {
117 Tile-component coding parameters
119 typedef struct opj_tccp {
122 /** number of resolutions */
124 /** code-blocks width */
126 /** code-blocks height */
128 /** code-block coding style */
130 /** discrete wavelet transform identifier */
132 /** quantisation style */
134 /** stepsizes used for quantization */
135 opj_stepsize_t stepsizes[J2K_MAXBANDS];
136 /** number of guard bits */
138 /** Region Of Interest shift */
140 /** precinct width */
141 int prcw[J2K_MAXRLVLS];
142 /** precinct height */
143 int prch[J2K_MAXRLVLS];
147 Tile coding parameters :
148 this structure is used to store coding/decoding parameters common to all
149 tiles (information like COD, COC in main header)
151 typedef struct opj_tcp {
152 /** 1 : first part-tile of a tile */
156 /** progression order */
158 /** number of layers */
160 /** multi-component transform identifier */
162 /** rates of layers */
164 /** number of progression order changes */
166 /** indicates if a POC marker has been used O:NO, 1:YES */
168 /** progression order changes */
170 /** packet header store there for futur use in t2_decode_packet */
171 unsigned char *ppt_data;
172 /** pointer remaining on the first byte of the first header if ppt is used */
173 unsigned char *ppt_data_first;
174 /** If ppt == 1 --> there was a PPT marker for the present tile */
176 /** used in case of multiple marker PPT (number of info already stored) */
180 /** add fixed_quality */
181 float distoratio[100];
182 /** tile-component coding parameters */
189 typedef struct opj_cp {
190 /** allocation by rate/distortion */
192 /** allocation by fixed layer */
194 /** add fixed_quality */
196 /** if != 0, then original dimension divided by 2^(reduce); if == 0 or not used, image is decoded to the full resolution */
198 /** if != 0, then only the first "layer" layers are decoded; if == 0 or not used, all the quality layers are decoded */
200 /** if == NO_LIMITATION, decode entire codestream; if == LIMIT_TO_MAIN_HEADER then only decode the main header */
201 OPJ_LIMIT_DECODING limit_decoding;
202 /** 0 = no index || 1 = index */
212 /** comment for coding */
214 /** number of tiles in width */
216 /** number of tiles in heigth */
218 /** ID number of the tiles present in the codestream */
220 /** size of the vector tileno */
222 /** packet header store there for futur use in t2_decode_packet */
223 unsigned char *ppm_data;
224 /** pointer remaining on the first byte of the first header if ppm is used */
225 unsigned char *ppm_data_first;
226 /** if ppm == 1 --> there was a PPM marker for the present tile */
228 /** use in case of multiple marker PPM (number of info already store) */
230 /** use in case of multiple marker PPM (case on non-finished previous info) */
234 /** tile coding parameters */
240 /** enables writing of EPC in MH, thus activating JPWL */
242 /** enables writing of EPB, in case of activated JPWL */
244 /** enables writing of ESD, in case of activated JPWL */
246 /** enables writing of informative techniques of ESD, in case of activated JPWL */
248 /** enables writing of RED, in case of activated JPWL */
250 /** error protection method for MH (0,1,16,32,37-128) */
252 /** tile number of header protection specification (>=0) */
253 int hprot_TPH_tileno[JPWL_MAX_NO_TILESPECS];
254 /** error protection methods for TPHs (0,1,16,32,37-128) */
255 int hprot_TPH[JPWL_MAX_NO_TILESPECS];
256 /** tile number of packet protection specification (>=0) */
257 int pprot_tileno[JPWL_MAX_NO_PACKSPECS];
258 /** packet number of packet protection specification (>=0) */
259 int pprot_packno[JPWL_MAX_NO_PACKSPECS];
260 /** error protection methods for packets (0,1,16,32,37-128) */
261 int pprot[JPWL_MAX_NO_PACKSPECS];
262 /** enables writing of ESD, (0/2/4 bytes) */
264 /** sensitivity addressing size (0=auto/2/4 bytes) */
266 /** sensitivity range (0-3) */
268 /** sensitivity method for MH (-1,0-7) */
270 /** tile number of sensitivity specification (>=0) */
271 int sens_TPH_tileno[JPWL_MAX_NO_TILESPECS];
272 /** sensitivity methods for TPHs (-1,0-7) */
273 int sens_TPH[JPWL_MAX_NO_TILESPECS];
274 /** enables JPWL correction at the decoder */
276 /** expected number of components at the decoder */
278 /** maximum number of tiles at the decoder */
280 #endif /* USE_JPWL */
285 Information concerning a packet inside tile
287 typedef struct opj_packet_info {
288 /** start position */
292 /** ADD for Marcela */
297 Index structure : information regarding tiles inside image
299 typedef struct opj_tile_info {
300 /** value of thresh for each layer by tile cfr. Marcela */
302 /** number of tile */
304 /** start position */
306 /** end position of the header */
310 /** precinct number for each resolution level (width) */
312 /** precinct number for each resolution level (height) */
314 /** precinct size (in power of 2), in X for each resolution level */
316 /** precinct size (in power of 2), in Y for each resolution level */
318 /** information concerning packets inside tile */
319 opj_packet_info_t *packet;
320 /** add fixed_quality */
322 /** add fixed_quality */
329 typedef struct opj_image_info {
330 /** 0 = no index || 1 = index */
332 /** maximum distortion reduction on the whole image (add for Marcela) */
336 /** writing the packet in the index with t2_encode_packets */
342 /** progression order */
344 /** tile size in x */
346 /** tile size in y */
352 /** number of tiles in X */
354 /** number of tiles in Y */
356 /** component numbers */
358 /** number of layer */
360 /** number of decomposition */
362 /** main header position */
364 /** codestream's size */
366 /** information regarding tiles inside image */
367 opj_tile_info_t *tile;
371 JPEG-2000 codestream reader/writer
373 typedef struct opj_j2k {
375 opj_common_ptr cinfo;
377 /** locate in which part of the codestream the decoder is (main header, tile header, end) */
379 /** number of the tile curently concern by coding/decoding */
382 locate the position of the end of the tile in the codestream,
383 used to detect a truncated codestream (in j2k_read_sod)
387 locate the start position of the SOT marker of the current coded tile:
388 after encoding the tile, a jump (in j2k_write_sod) is done to the SOT marker to store the value of its length.
393 as the J2K-file is written in several parts during encoding,
394 it enables to make the right correction in position return by cio_tell
397 /** array used to store the data of each tile */
398 unsigned char **tile_data;
399 /** array used to store the length of each tile */
403 store decoding parameters common to all tiles (information like COD, COC in main header)
405 opj_tcp_t *default_tcp;
406 /** pointer to the encoded / decoded image */
408 /** pointer to the coding parameters */
410 /** helper used to write the index file */
411 opj_image_info_t *image_info;
412 /** pointer to the byte i/o stream */
416 /** @name Exported functions */
418 /* ----------------------------------------------------------------------- */
420 Creates a J2K decompression structure
421 @param cinfo Codec context info
422 @return Returns a handle to a J2K decompressor if successful, returns NULL otherwise
424 opj_j2k_t* j2k_create_decompress(opj_common_ptr cinfo);
426 Destroy a J2K decompressor handle
427 @param j2k J2K decompressor handle to destroy
429 void j2k_destroy_decompress(opj_j2k_t *j2k);
431 Setup the decoder decoding parameters using user parameters.
432 Decoding parameters are returned in j2k->cp.
433 @param j2k J2K decompressor handle
434 @param parameters decompression parameters
436 void j2k_setup_decoder(opj_j2k_t *j2k, opj_dparameters_t *parameters);
438 Decode an image from a JPEG-2000 codestream
439 @param j2k J2K decompressor handle
440 @param cio Input buffer stream
441 @return Returns a decoded image if successful, returns NULL otherwise
443 opj_image_t* j2k_decode(opj_j2k_t *j2k, opj_cio_t *cio);
445 Decode an image form a JPT-stream (JPEG 2000, JPIP)
446 @param j2k J2K decompressor handle
447 @param cio Input buffer stream
448 @return Returns a decoded image if successful, returns NULL otherwise
450 opj_image_t* j2k_decode_jpt_stream(opj_j2k_t *j2k, opj_cio_t *cio);
452 Creates a J2K compression structure
453 @param cinfo Codec context info
454 @return Returns a handle to a J2K compressor if successful, returns NULL otherwise
456 opj_j2k_t* j2k_create_compress(opj_common_ptr cinfo);
458 Destroy a J2K compressor handle
459 @param j2k J2K compressor handle to destroy
461 void j2k_destroy_compress(opj_j2k_t *j2k);
463 Setup the encoder parameters using the current image and using user parameters.
464 Coding parameters are returned in j2k->cp.
465 @param j2k J2K compressor handle
466 @param parameters compression parameters
467 @param image input filled image
469 void j2k_setup_encoder(opj_j2k_t *j2k, opj_cparameters_t *parameters, opj_image_t *image);
471 Encode an image into a JPEG-2000 codestream
472 @param j2k J2K compressor handle
473 @param cio Output buffer stream
474 @param image Image to encode
475 @param index Name of the index file if required, NULL otherwise
476 @return Returns true if successful, returns false otherwise
478 bool j2k_encode(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image, char *index);
479 /* ----------------------------------------------------------------------- */