2 * Copyright (c) 2001-2003, David Janssens
3 * Copyright (c) 2002-2003, Yannick Verschueren
4 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
5 * Copyright (c) 2005, Herv� Drolon, FreeImage Team
6 * Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
7 * Copyright (c) 2005-2006, Dept. of Electronic and Information Engineering, Universita' degli Studi di Perugia, Italy
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
41 @brief The JPEG-2000 Part11 (JPWL) marker segments manager
43 The functions in JPWL.C have for goal to read/write the markers added by JPWL.
46 /** @defgroup JPWL JPWL - JPEG-2000 Part11 (JPWL) codestream manager */
50 Assume a basic codestream structure, so you can resort better from uncorrected errors
52 #define JPWL_ASSUME true
55 EPB (Error Protection Block) Marker segment
57 typedef struct jpwl_epb_ms {
58 /**@name Private fields set by epb_create */
60 /** is the latest in header? */
62 /** is it in packed mode? */
64 /** TH where this marker has been placed (-1 means MH) */
66 /** index in current header (0-63) */
68 /** error protection method [-1=absent 0=none 1=predefined 16=CRC-16 32=CRC-32 37-128=RS] */
70 /** message word length of pre-data */
72 /** code word length of pre-data */
74 /** length of pre-data */
76 /** message word length of post-data */
78 /** code word length of post-data */
80 /** length of post-data */
83 /**@name Marker segment fields */
85 /** two bytes for the length of EPB MS, exluding the marker itself (11 to 65535 bytes) */
86 unsigned short int Lepb;
87 /** single byte for the style */
89 /** four bytes, from 0 to 2^31-1 */
90 unsigned long int LDPepb;
91 /** four bytes, next error management method */
92 unsigned long int Pepb;
93 /** EPB data, variable size */
99 EPC (Error Protection Capability) Marker segment
101 typedef struct jpwl_epc_ms {
102 /** is ESD active? */
104 /** is RED active? */
106 /** is EPB active? */
108 /** are informative techniques active? */
110 /**@name Marker segment fields */
112 /** two bytes for the length of EPC MS, exluding the marker itself (9 to 65535 bytes) */
113 unsigned short int Lepc;
114 /** two bytes, CRC for the EPC, excluding Pcrc itself */
115 unsigned short int Pcrc;
116 /** four bytes, the codestream length from SOC to EOC */
117 unsigned long int DL;
118 /** one byte, signals JPWL techniques adoption */
120 /** EPC data, variable length */
126 ESD (Error Sensitivity Descriptor) Marker segment
128 typedef struct jpwl_esd_ms {
129 /** codestream addressing mode [0=packet, 1=byte range, 2=packet range, 3=reserved] */
131 /** size of codestream addresses [2/4 bytes] */
132 unsigned char ad_size;
133 /** type of sensitivity
134 [0=relative error, 1=MSE, 2=MSE reduction, 3=PSNR, 4=PSNR increment,
135 5=MAXERR (absolute peak error), 6=TSE (total squared error), 7=reserved */
137 /** size of sensitivity data (1/2 bytes) */
138 unsigned char se_size;
139 /**@name Marker segment fields */
141 /** two bytes for the length of ESD MS, exluding the marker itself (4 to 65535 bytes) */
142 unsigned short int Lesd;
143 /** two bytes, component of error sensitivity */
144 unsigned short int Cesd;
145 /** one byte, signals JPWL techniques adoption */
147 /** ESD data, variable length */
150 /**@name Fields set by esd_create (only internal use) */
152 /** number of components in the image */
154 /** tile where this marker has been placed (-1 means MH) */
156 /** number of sensitivity values */
157 unsigned long int svalnum;
158 /** size of a single sensitivity pair (address+value) */
164 RED (Residual Error Descriptor) Marker segment
166 typedef struct jpwl_red_ms {
167 /** two bytes for the length of RED MS, exluding the marker itself (3 to 65535 bytes) */
168 unsigned short int Lred;
169 /** one byte, signals JPWL techniques adoption */
171 /** RED data, variable length */
176 Structure used to store JPWL markers temporary position and readyness
178 typedef struct jpwl_marker {
179 /** marker value (J2K_MS_EPC, etc.) */
181 /** union keeping the pointer to the real marker struct */
183 /** pointer to EPB marker */
184 jpwl_epb_ms_t *epbmark;
185 /** pointer to EPC marker */
186 jpwl_epc_ms_t *epcmark;
187 /** pointer to ESD marker */
188 jpwl_esd_ms_t *esdmark;
189 /** pointer to RED marker */
190 jpwl_red_ms_t *redmark;
192 /** position where the marker should go, in the pre-JPWL codestream */
193 unsigned long int pos;
194 /** same as before, only written as a double, so we can sort it better */
196 /** length of the marker segment (marker excluded) */
197 unsigned short int len;
198 /** the marker length is ready or not? */
200 /** the marker position is ready or not? */
202 /** the marker parameters are ready or not? */
204 /** are the written data ready or not */
209 Prepare the list of JPWL markers, after the Part 1 codestream
210 has been finalized (index struct is full)
211 @param j2k J2K handle
212 @param cio codestream handle
213 @param image image handle
215 void jpwl_prepare_marks(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image);
218 Dump the list of JPWL markers, after it has been prepared
219 @param j2k J2K handle
220 @param cio codestream handle
221 @param image image handle
223 void jpwl_dump_marks(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image);
226 Read the EPC marker (Error Protection Capability)
227 @param j2k J2K handle
229 void j2k_read_epc(opj_j2k_t *j2k);
231 Write the EPC marker (Error Protection Capability), BUT the DL field is always set to 0
232 (this simplifies the management of EPBs and it is openly stated in the standard
233 as a possible value, mening that the information is not available) and the informative techniques
234 are not yet implemented
235 @param j2k J2K handle
237 void j2k_write_epc(opj_j2k_t *j2k);
239 Read the EPB marker (Error Protection Block)
240 @param j2k J2K handle
242 void j2k_read_epb(opj_j2k_t *j2k);
244 Write the EPB marker (Error Protection Block)
245 @param j2k J2K handle
247 void j2k_write_epb(opj_j2k_t *j2k);
249 Read the ESD marker (Error Sensitivity Descriptor)
250 @param j2k J2K handle
252 void j2k_read_esd(opj_j2k_t *j2k);
254 Read the RED marker (Residual Error Descriptor)
255 @param j2k J2K handle
257 void j2k_read_red(opj_j2k_t *j2k);
259 /** create an EPB marker segment
260 @param j2k J2K compressor handle
261 @param latest it is the latest EPB in the header
262 @param packed EPB is in packed style
263 @param tileno tile number where the marker has been placed (-1 means MH)
264 @param idx current EPB running index
265 @param hprot applied protection type (-1/0,1,16,32,37-128)
266 @param pre_len length of pre-protected data
267 @param post_len length of post-protected data
268 @return returns the freshly created EPB
270 jpwl_epb_ms_t *jpwl_epb_create(opj_j2k_t *j2k, bool latest, bool packed, int tileno, int idx, int hprot,
271 unsigned long int pre_len, unsigned long int post_len);
273 /** add a number of EPB marker segments
274 @param j2k J2K compressor handle
275 @param jwmarker pointer to the JPWL markers list
276 @param jwmarker_num pointer to the number of JPWL markers (gets updated)
277 @param latest it is the latest group of EPBs in the header
278 @param packed EPBs are in packed style
279 @param insideMH it is in the MH
280 @param idx pointer to the starting EPB running index (gets updated)
281 @param hprot applied protection type (-1/0,1,16,32,37-128)
282 @param place_pos place in original codestream where EPBs should go
283 @param tileno tile number of these EPBs
284 @param pre_len length of pre-protected data
285 @param post_len length of post-protected data
286 @return returns the length of all added markers
288 int jpwl_epbs_add(opj_j2k_t *j2k, jpwl_marker_t *jwmarker, int *jwmarker_num,
289 bool latest, bool packed, bool insideMH, int *idx, int hprot,
290 double place_pos, int tileno,
291 unsigned long int pre_len, unsigned long int post_len);
293 /** add a number of ESD marker segments
294 @param j2k J2K compressor handle
295 @param jwmarker pointer to the JPWL markers list
296 @param jwmarker_num pointer to the number of JPWL markers (gets updated)
297 @param comps considered component (-1=average, 0/1/2/...=component no.)
298 @param addrm addressing mode (0=packet, 1=byte range, 2=packet range, 3=reserved)
299 @param ad_size size of addresses (2/4 bytes)
300 @param senst sensitivity type
301 @param se_size sensitivity values size (1/2 bytes)
302 @param place_pos place in original codestream where EPBs should go
303 @param tileno tile number of these EPBs
304 @return returns the length of all added markers
306 int jpwl_esds_add(opj_j2k_t *j2k, jpwl_marker_t *jwmarker, int *jwmarker_num,
307 int comps, unsigned char addrm, unsigned char ad_size,
308 unsigned char senst, unsigned char se_size,
309 double place_pos, int tileno);
311 /** updates the information structure by modifying the positions and lengths
312 @param j2k J2K compressor handle
313 @param jwmarker pointer to JPWL markers list
314 @param jwmarker_num number of JPWL markers
315 @return returns true in case of success
317 bool jpwl_update_info(opj_j2k_t *j2k, jpwl_marker_t *jwmarker, int jwmarker_num);
320 bool jpwl_esd_fill(opj_j2k_t *j2k, jpwl_esd_ms_t *esdmark, unsigned char *buf);
322 bool jpwl_epb_fill(opj_j2k_t *j2k, jpwl_epb_ms_t *epbmark, unsigned char *buf, unsigned char *post_buf);
324 /** corrects the data in the JPWL codestream
325 @param j2k J2K compressor handle
326 @return true if correction is performed correctly
328 bool jpwl_correct(opj_j2k_t *j2k);
330 /** corrects the data protected by an EPB
331 @param j2k J2K compressor handle
332 @param buffer pointer to the EPB position
333 @param type type of EPB: 0=MH, 1=TPH, 2=other, 3=auto
334 @param pre_len length of pre-data
335 @param post_len length of post_data
336 @param conn is a pointer to the length of all connected (packed) EPBs
337 @param L4_bufp is a pointer to the buffer pointer of redundancy data
338 @return returns true if correction could be succesfully performed
340 bool jpwl_epb_correct(opj_j2k_t *j2k, unsigned char *buffer, int type, int pre_len, int post_len, int *conn,
341 unsigned char **L4_bufp);
343 /** check that a tile and its children have valid data
344 @param j2k J2K decompressor handle
345 @param tcd Tile decompressor handle
346 @param tileno number of the tile to check
348 bool jpwl_check_tile(opj_j2k_t *j2k, opj_tcd_t *tcd, int tileno);
350 /** Macro functions for CRC computation */
353 Computes the CRC-16, as stated in JPWL specs
354 @param CRC two bytes containing the CRC value (must be initialized with 0x0000)
355 @param DATA byte for which the CRC is computed; call this on every byte of the sequence
356 and get the CRC at the end
358 #define jpwl_updateCRC16(CRC, DATA) updateCRC16(CRC, DATA)
361 Computes the CRC-32, as stated in JPWL specs
362 @param CRC four bytes containing the CRC value (must be initialized with 0x00000000)
363 @param DATA byte for which the CRC is computed; call this on every byte of the sequence
364 and get the CRC at the end
366 #define jpwl_updateCRC32(CRC, DATA) updateCRC32(CRC, DATA)
369 Computes the minimum between two integers
370 @param a first integer to compare
371 @param b second integer to compare
372 @return returns the minimum integer between a and b
375 #define min(a,b) (((a) < (b)) ? (a) : (b))
380 #endif /* USE_JPWL */
382 #endif /* __JPWL_H */