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openjpeg/jpwl/jpwl.c

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JPWL version 1.0 by Universita' degli Studi di Perugia
2006-12-04 14:23:44 +01:00
/*
* Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
* Copyright (c) 2005, Herv<EFBFBD> Drolon, FreeImage Team
* Copyright (c) 2002-2005, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
* Copyright (c) 2005-2006, Dept. of Electronic and Information Engineering, Universita' degli Studi di Perugia, Italy
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef USE_JPWL
#include "../libopenjpeg/opj_includes.h"
/** @defgroup JPWL JPWL - JPEG-2000 Part11 (JPWL) codestream manager */
/*@{*/
/** @name Local static variables */
/*@{*/
/** position of markers to insert */
static jpwl_marker_t jwmarker[JPWL_MAX_NO_MARKERS];
/** number of prepared markers */
static int jwmarker_num;
/*@}*/
/*@}*/
/** @name Local static functions */
/*@{*/
/** create an EPC marker segment
@param j2k J2K compressor handle
@param esd_on true if ESD is activated
@param red_on true if RED is activated
@param epb_on true if EPB is activated
@param info_on true if informative techniques are activated
@return returns the freshly created EPC
*/
jpwl_epc_ms_t *jpwl_epc_create(opj_j2k_t *j2k, bool esd_on, bool red_on, bool epb_on, bool info_on);
/*@}*/
/** create an EPC marker segment
@param j2k J2K compressor handle
@param comps considered component (-1=average, 0/1/2/...=component no.)
@param addrm addressing mode (0=packet, 1=byte range, 2=packet range, 3=reserved)
@param ad_size size of addresses (2/4 bytes)
@param senst sensitivity type
@param se_size sensitivity values size (1/2 bytes)
@param tileno tile where this ESD lies (-1 means MH)
@param svalnum number of sensitivity values (if 0, they will be automatically filled)
@param sensval pointer to an array of sensitivity values (if NULL, they will be automatically filled)
@return returns the freshly created ESD
*/
jpwl_esd_ms_t *jpwl_esd_create(opj_j2k_t *j2k, int comps, unsigned char addrm, unsigned char ad_size,
unsigned char senst, int se_size, int tileno,
unsigned long int svalnum, void *sensval);
/** this function is used to compare two JPWL markers based on
their relevant wishlist position
@param arg1 pointer to first marker
@param arg2 pointer to second marker
@return 1 if arg1>arg2, 0 if arg1=arg2, -1 if arg1<arg2
*/
int jpwl_markcomp(const void *arg1, const void *arg2);
/** write an EPB MS to a buffer
@param epbmark pointer to the EPB MS
@param buf pointer to the memory buffer
*/
void jpwl_epb_write(jpwl_epb_ms_t *epbmark, unsigned char *buf);
/** write an EPC MS to a buffer
@param epcmark pointer to the EPC MS
@param buf pointer to the memory buffer
*/
void jpwl_epc_write(jpwl_epc_ms_t *epcmark, unsigned char *buf);
/** write an ESD MS to a buffer
@param esdmark pointer to the ESD MS
@param buf pointer to the memory buffer
*/
void jpwl_esd_write(jpwl_esd_ms_t *esdmark, unsigned char *buf);
/*-----------------------------------------------------------------*/
void jpwl_prepare_marks(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image) {
unsigned short int socsiz_len = 0;
int ciopos = cio_tell(cio);
unsigned char *socp = NULL;
int tileno, tilespec, hprot, sens, pprot, packspec, lastileno, packno;
jpwl_epb_ms_t *epb_mark;
jpwl_epc_ms_t *epc_mark;
jpwl_esd_ms_t *esd_mark;
/* find SOC + SIZ length */
/* I assume SIZ is always the first marker after SOC */
cio_seek(cio, 4);
socsiz_len = (unsigned short int) cio_read(cio, 2) + 4; /* add the 2 marks length itself */
cio_seek(cio, 0);
socp = cio_getbp(cio); /* pointer to SOC */
/*
EPC MS for Main Header: if we are here it's required
*/
/* create the EPC */
if (epc_mark = jpwl_epc_create(
j2k,
j2k->cp->esd_on, /* is ESD present? */
j2k->cp->red_on, /* is RED present? */
j2k->cp->epb_on, /* is EPB present? */
false /* are informative techniques present? */
)) {
/* Add this marker to the 'insertanda' list */
if (epc_mark) {
jwmarker[jwmarker_num].id = J2K_MS_EPC; /* its type */
jwmarker[jwmarker_num].epcmark = epc_mark; /* the EPC */
jwmarker[jwmarker_num].pos = socsiz_len; /* after SIZ */
jwmarker[jwmarker_num].dpos = (double) jwmarker[jwmarker_num].pos + 0.1; /* not so first */
jwmarker[jwmarker_num].len = epc_mark->Lepc; /* its length */
jwmarker[jwmarker_num].len_ready = true; /* ready */
jwmarker[jwmarker_num].pos_ready = true; /* ready */
jwmarker[jwmarker_num].parms_ready = false; /* not ready */
jwmarker[jwmarker_num].data_ready = true; /* ready */
jwmarker_num++;
};
opj_event_msg(j2k->cinfo, EVT_INFO,
"MH EPC : setting %s%s%s\n",
j2k->cp->esd_on ? "ESD, " : "",
j2k->cp->red_on ? "RED, " : "",
j2k->cp->epb_on ? "EPB, " : ""
);
} else {
/* ooops, problems */
opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create MH EPC\n");
};
/*
ESD MS for Main Header
*/
/* first of all, must MH have an ESD MS? */
if (j2k->cp->esd_on && (j2k->cp->sens_MH >= 0)) {
/* Create the ESD */
if (esd_mark = jpwl_esd_create(
j2k, /* this encoder handle */
-1, /* we are averaging over all components */
(unsigned char) j2k->cp->sens_range, /* range method */
(unsigned char) j2k->cp->sens_addr, /* sensitivity addressing */
(unsigned char) j2k->cp->sens_MH, /* sensitivity method */
j2k->cp->sens_size, /* sensitivity size */
-1, /* this ESD is in main header */
0 /*j2k->image_info->num*/, /* number of packets in codestream */
NULL /*sensval*/ /* pointer to sensitivity data of packets */
)) {
/* Add this marker to the 'insertanda' list */
if (jwmarker_num < JPWL_MAX_NO_MARKERS) {
jwmarker[jwmarker_num].id = J2K_MS_ESD; /* its type */
jwmarker[jwmarker_num].esdmark = esd_mark; /* the EPB */
jwmarker[jwmarker_num].pos = socsiz_len; /* we choose to place it after SIZ */
jwmarker[jwmarker_num].dpos = (double) jwmarker[jwmarker_num].pos + 0.2; /* not first at all! */
jwmarker[jwmarker_num].len = esd_mark->Lesd; /* its length */
jwmarker[jwmarker_num].len_ready = true; /* not ready, yet */
jwmarker[jwmarker_num].pos_ready = true; /* ready */
jwmarker[jwmarker_num].parms_ready = true; /* not ready */
jwmarker[jwmarker_num].data_ready = false; /* not ready */
jwmarker_num++;
}
opj_event_msg(j2k->cinfo, EVT_INFO,
"MH ESDs: method %d\n",
j2k->cp->sens_MH
);
} else {
/* ooops, problems */
opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create MH ESD\n");
};
}
/*
ESD MSs for Tile Part Headers
*/
/* cycle through TPHs */
sens = -1; /* default spec: no ESD */
tilespec = 0; /* first tile spec */
for (tileno = 0; tileno < j2k->image_info->tw * j2k->image_info->th; tileno++) {
int sot_len, Psot, Psotp, mm;
unsigned long sot_pos, post_sod_pos;
unsigned long int left_THmarks_len;
sot_pos = j2k->image_info->tile[tileno].start_pos;
cio_seek(cio, sot_pos + 2);
sot_len = cio_read(cio, 2); /* SOT Len */
cio_skip(cio, 2);
Psotp = cio_tell(cio);
Psot = cio_read(cio, 4); /* tile length */
post_sod_pos = j2k->image_info->tile[tileno].end_header + 1;
left_THmarks_len = post_sod_pos - sot_pos;
/* add all the lengths of the markers which are len-ready and stay within SOT and SOD */
for (mm = 0; mm < jwmarker_num; mm++) {
if ((jwmarker[mm].pos >= sot_pos) && (jwmarker[mm].pos < post_sod_pos)) {
if (jwmarker[mm].len_ready)
left_THmarks_len += jwmarker[mm].len + 2;
else {
opj_event_msg(j2k->cinfo, EVT_ERROR, "MS %x in %f is not len-ready: could not set up TH EPB\n",
jwmarker[mm].id, jwmarker[mm].dpos);
exit(1);
}
}
}
if ((tilespec < JPWL_MAX_NO_TILESPECS) && (j2k->cp->sens_TPH_tileno[tilespec] == tileno))
/* we got a specification from this tile onwards */
sens = j2k->cp->sens_TPH[tilespec++];
/* must this TPH have an ESD MS? */
if (j2k->cp->esd_on && (sens >= 0)) {
/* Create the ESD */
if (esd_mark = jpwl_esd_create(
j2k, /* this encoder handle */
-1, /* we are averaging over all components */
(unsigned char) j2k->cp->sens_range, /* range method */
(unsigned char) j2k->cp->sens_addr, /* sensitivity addressing size */
(unsigned char) sens, /* sensitivity method */
j2k->cp->sens_size, /* sensitivity value size */
tileno, /* this ESD is in a tile */
0, /* number of packets in codestream */
NULL /* pointer to sensitivity data of packets */
)) {
/* Add this marker to the 'insertanda' list */
if (jwmarker_num < JPWL_MAX_NO_MARKERS) {
jwmarker[jwmarker_num].id = J2K_MS_ESD; /* its type */
jwmarker[jwmarker_num].esdmark = esd_mark; /* the EPB */
jwmarker[jwmarker_num].pos = j2k->image_info->tile[tileno].start_pos + sot_len + 2; /* after SOT */
jwmarker[jwmarker_num].dpos = (double) jwmarker[jwmarker_num].pos + 0.2; /* not first at all! */
jwmarker[jwmarker_num].len = esd_mark->Lesd; /* its length */
jwmarker[jwmarker_num].len_ready = true; /* ready, yet */
jwmarker[jwmarker_num].pos_ready = true; /* ready */
jwmarker[jwmarker_num].parms_ready = true; /* not ready */
jwmarker[jwmarker_num].data_ready = false; /* ready */
jwmarker_num++;
}
/* update Psot of the tile */
cio_seek(cio, Psotp);
cio_write(cio, Psot + esd_mark->Lesd + 2, 4);
opj_event_msg(j2k->cinfo, EVT_INFO,
"TPH ESDs: tile %02d, method %d\n",
tileno,
sens
);
} else {
/* ooops, problems */
opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create TPH ESD #%d\n", tileno);
};
}
};
/*
EPB MS for Main Header
*/
/* first of all, must MH have an EPB MS? */
if (j2k->cp->epb_on && (j2k->cp->hprot_MH > 0)) {
int mm;
/* position of SOT */
unsigned int sot_pos = j2k->image_info->main_head_end + 1;
/* how much space is there between end of SIZ and beginning of SOT? */
int left_MHmarks_len = sot_pos - socsiz_len;
/* add all the lengths of the markers which are len-ready and stay within SOC and SOT */
for (mm = 0; mm < jwmarker_num; mm++) {
if ((jwmarker[mm].pos >=0) && (jwmarker[mm].pos < sot_pos)) {
if (jwmarker[mm].len_ready)
left_MHmarks_len += jwmarker[mm].len + 2;
else {
opj_event_msg(j2k->cinfo, EVT_ERROR, "MS %x in %f is not len-ready: could not set up MH EPB\n",
jwmarker[mm].id, jwmarker[mm].dpos);
exit(1);
}
}
}
/* Create the EPB */
if (epb_mark = jpwl_epb_create(
j2k, /* this encoder handle */
true, /* is it the latest? */
true, /* is it packed? not for now */
-1, /* we are in main header */
0, /* its index is 0 (first) */
j2k->cp->hprot_MH, /* protection type parameters of data */
socsiz_len, /* pre-data: only SOC+SIZ */
left_MHmarks_len /* post-data: from SOC to SOT, and all JPWL markers within */
)) {
/* Add this marker to the 'insertanda' list */
if (jwmarker_num < JPWL_MAX_NO_MARKERS) {
jwmarker[jwmarker_num].id = J2K_MS_EPB; /* its type */
jwmarker[jwmarker_num].epbmark = epb_mark; /* the EPB */
jwmarker[jwmarker_num].pos = socsiz_len; /* after SIZ */
jwmarker[jwmarker_num].dpos = (double) jwmarker[jwmarker_num].pos; /* first first first! */
jwmarker[jwmarker_num].len = epb_mark->Lepb; /* its length */
jwmarker[jwmarker_num].len_ready = true; /* ready */
jwmarker[jwmarker_num].pos_ready = true; /* ready */
jwmarker[jwmarker_num].parms_ready = true; /* ready */
jwmarker[jwmarker_num].data_ready = false; /* not ready */
jwmarker_num++;
}
opj_event_msg(j2k->cinfo, EVT_INFO,
"MH EPB : prot. %d\n",
j2k->cp->hprot_MH
);
} else {
/* ooops, problems */
opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create MH EPB\n");
};
}
/*
EPB MSs for Tile Parts
*/
/* cycle through TPHs */
hprot = j2k->cp->hprot_MH; /* default spec */
tilespec = 0; /* first tile spec */
lastileno = 0;
packspec = 0;
pprot = -1;
for (tileno = 0; tileno < j2k->image_info->tw * j2k->image_info->th; tileno++) {
int sot_len, Psot, Psotp, mm, epb_index = 0, prot_len = 0;
unsigned long sot_pos, post_sod_pos;
unsigned long int left_THmarks_len, epbs_len = 0;
int startpack = 0, stoppack = j2k->image_info->num;
sot_pos = j2k->image_info->tile[tileno].start_pos;
cio_seek(cio, sot_pos + 2);
sot_len = cio_read(cio, 2); /* SOT Len */
cio_skip(cio, 2);
Psotp = cio_tell(cio);
Psot = cio_read(cio, 4); /* tile length */
post_sod_pos = j2k->image_info->tile[tileno].end_header + 1;
left_THmarks_len = post_sod_pos - (sot_pos + sot_len + 2);
/* add all the lengths of the markers which are len-ready and stay within SOT and SOD */
for (mm = 0; mm < jwmarker_num; mm++) {
if ((jwmarker[mm].pos >= sot_pos) && (jwmarker[mm].pos < post_sod_pos)) {
if (jwmarker[mm].len_ready)
left_THmarks_len += jwmarker[mm].len + 2;
else {
opj_event_msg(j2k->cinfo, EVT_ERROR, "MS %x in %f is not len-ready: could not set up TH EPB\n",
jwmarker[mm].id, jwmarker[mm].dpos);
exit(1);
}
}
}
if ((tilespec < JPWL_MAX_NO_TILESPECS) && (j2k->cp->hprot_TPH_tileno[tilespec] == tileno))
/* we got a specification from this tile onwards */
hprot = j2k->cp->hprot_TPH[tilespec++];
/* must this TPH have an EPB MS? */
if (j2k->cp->epb_on && (hprot > 0)) {
/* Create the EPB */
if (epb_mark = jpwl_epb_create(
j2k, /* this encoder handle */
false, /* is it the latest? in TPH, yes for now (if huge data size in TPH, we'd need more) */
true, /* is it packed? not for now */
tileno, /* we are in TPH */
epb_index++, /* its index is 0 (first) */
hprot, /* protection type parameters of following data */
sot_len + 2, /* pre-data length: only SOT */
left_THmarks_len /* post-data length: from SOT end to SOD inclusive */
)) {
/* Add this marker to the 'insertanda' list */
if (jwmarker_num < JPWL_MAX_NO_MARKERS) {
jwmarker[jwmarker_num].id = J2K_MS_EPB; /* its type */
jwmarker[jwmarker_num].epbmark = epb_mark; /* the EPB */
jwmarker[jwmarker_num].pos = j2k->image_info->tile[tileno].start_pos + sot_len + 2; /* after SOT */
jwmarker[jwmarker_num].dpos = (double) jwmarker[jwmarker_num].pos; /* first first first! */
jwmarker[jwmarker_num].len = epb_mark->Lepb; /* its length */
jwmarker[jwmarker_num].len_ready = true; /* ready */
jwmarker[jwmarker_num].pos_ready = true; /* ready */
jwmarker[jwmarker_num].parms_ready = true; /* ready */
jwmarker[jwmarker_num].data_ready = false; /* not ready */
jwmarker_num++;
}
/* update Psot of the tile */
Psot += epb_mark->Lepb + 2;
opj_event_msg(j2k->cinfo, EVT_INFO,
"TPH EPB : tile %02d, prot. %d\n",
tileno,
hprot
);
} else {
/* ooops, problems */
opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create TPH EPB #%d\n", tileno);
};
}
startpack = 0;
/* EPB MSs for UEP packet data protection in Tile Parts */
for (packno = 0; packno < j2k->image_info->num; packno++) {
if ((packspec < JPWL_MAX_NO_PACKSPECS) &&
(j2k->cp->pprot_tileno[packspec] == tileno) && (j2k->cp->pprot_packno[packspec] == packno)) {
/* we got a specification from this tile and packet onwards */
/* print the previous spec */
if (packno > 0) {
stoppack = packno - 1;
opj_event_msg(j2k->cinfo, EVT_INFO,
"UEP EPBs: tile %02d, packs. %02d-%02d (B %d-%d), prot. %d\n",
tileno,
startpack,
stoppack,
j2k->image_info->tile[tileno].packet[startpack].start_pos,
j2k->image_info->tile[tileno].packet[stoppack].end_pos,
pprot);
prot_len = j2k->image_info->tile[tileno].packet[stoppack].end_pos + 1 -
j2k->image_info->tile[tileno].packet[startpack].start_pos;
/*
particular case: if this is the last header and the last packet,
then it is better to protect even the EOC marker
*/
if ((tileno == ((j2k->image_info->tw * j2k->image_info->th) - 1)) &&
(stoppack == (j2k->image_info->num - 1)))
/* add the EOC len */
prot_len += 2;
/* let's add the EPBs */
Psot += jpwl_epbs_add(
j2k, /* J2K handle */
jwmarker, /* pointer to JPWL markers list */
&jwmarker_num, /* pointer to the number of current markers */
false, /* latest */
true, /* packed */
false, /* inside MH */
&epb_index, /* pointer to EPB index */
pprot, /* protection type */
(double) (j2k->image_info->tile[tileno].start_pos + sot_len + 2) + 0.0001, /* position */
tileno, /* number of tile */
0, /* length of pre-data */
prot_len /*4000*/ /* length of post-data */
);
}
startpack = packno;
pprot = j2k->cp->pprot[packspec++];
}
//printf("Tile %02d, pack %02d ==> %d\n", tileno, packno, pprot);
}
/* we are at the end: print the remaining spec */
stoppack = packno - 1;
if (pprot >= 0) {
opj_event_msg(j2k->cinfo, EVT_INFO,
"UEP EPBs: tile %02d, packs. %02d-%02d (B %d-%d), prot. %d\n",
tileno,
startpack,
stoppack,
j2k->image_info->tile[tileno].packet[startpack].start_pos,
j2k->image_info->tile[tileno].packet[stoppack].end_pos,
pprot);
prot_len = j2k->image_info->tile[tileno].packet[stoppack].end_pos + 1 -
j2k->image_info->tile[tileno].packet[startpack].start_pos;
/*
particular case: if this is the last header and the last packet,
then it is better to protect even the EOC marker
*/
if ((tileno == ((j2k->image_info->tw * j2k->image_info->th) - 1)) &&
(stoppack == (j2k->image_info->num - 1)))
/* add the EOC len */
prot_len += 2;
/* let's add the EPBs */
Psot += jpwl_epbs_add(
j2k, /* J2K handle */
jwmarker, /* pointer to JPWL markers list */
&jwmarker_num, /* pointer to the number of current markers */
true, /* latest */
true, /* packed */
false, /* inside MH */
&epb_index, /* pointer to EPB index */
pprot, /* protection type */
(double) (j2k->image_info->tile[tileno].start_pos + sot_len + 2) + 0.0001, /* position */
tileno, /* number of tile */
0, /* length of pre-data */
prot_len /*4000*/ /* length of post-data */
);
}
/* write back Psot */
cio_seek(cio, Psotp);
cio_write(cio, Psot, 4);
};
/* reset the position */
cio_seek(cio, ciopos);
}
void jpwl_dump_marks(opj_j2k_t *j2k, opj_cio_t *cio, opj_image_t *image) {
int mm;
unsigned long int old_size = j2k->image_info->codestream_size;
unsigned long int new_size = old_size;
int ciopos = cio_tell(cio);
unsigned char *jpwl_buf, *orig_buf;
unsigned long int orig_pos;
double epbcoding_time = 0.0, esdcoding_time = 0.0;
/* Order JPWL markers according to their wishlist position */
qsort((void *) jwmarker, (size_t) jwmarker_num, sizeof (jpwl_marker_t), jpwl_markcomp);
/* compute markers total size */
for (mm = 0; mm < jwmarker_num; mm++) {
/*printf("%x, %d, %.10f, %d long\n", jwmarker[mm].id, jwmarker[mm].pos,
jwmarker[mm].dpos, jwmarker[mm].len);*/
new_size += jwmarker[mm].len + 2;
}
/* allocate a temporary buffer of proper size */
if (!(jpwl_buf = (unsigned char *) opj_malloc((size_t) new_size * sizeof (unsigned char)))) {
opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not allocate room for JPWL temp codestream buffer\n");
exit(1);
};
orig_buf = jpwl_buf;
/* cycle through markers */
orig_pos = 0; /* start from the beginning */
cio_seek(cio, 0); /* rewind the original */
for (mm = 0; mm < jwmarker_num; mm++) {
/*
need to copy a piece of the original codestream
if there is such
*/
memcpy(jpwl_buf, cio_getbp(cio), jwmarker[mm].pos - orig_pos);
jpwl_buf += jwmarker[mm].pos - orig_pos;
orig_pos = jwmarker[mm].pos;
cio_seek(cio, orig_pos);
/*
then write down the marker
*/
switch (jwmarker[mm].id) {
case J2K_MS_EPB:
jpwl_epb_write(jwmarker[mm].epbmark, jpwl_buf);
break;
case J2K_MS_EPC:
jpwl_epc_write(jwmarker[mm].epcmark, jpwl_buf);
break;
case J2K_MS_ESD:
jpwl_esd_write(jwmarker[mm].esdmark, jpwl_buf);
break;
case J2K_MS_RED:
memset(jpwl_buf, 0, jwmarker[mm].len + 2); /* placeholder */
break;
default:
break;
};
/* we set the marker dpos to the new position in the JPWL codestream */
jwmarker[mm].dpos = (double) (jpwl_buf - orig_buf);
/* advance JPWL buffer position */
jpwl_buf += jwmarker[mm].len + 2;
}
/* finish remaining original codestream */
memcpy(jpwl_buf, cio_getbp(cio), old_size - orig_pos);
jpwl_buf += old_size - orig_pos;
cio_seek(cio, old_size);
/*
update info file based on added markers
*/
if (!jpwl_update_info(j2k, jwmarker, jwmarker_num))
opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not update OPJ image_info structure\n");
/* now we need to repass some markers and fill their data fields */
/* first of all, DL and Pcrc in EPCs */
for (mm = 0; mm < jwmarker_num; mm++) {
/* find the EPCs */
if (jwmarker[mm].id == J2K_MS_EPC) {
int epc_pos = (int) jwmarker[mm].dpos, pp;
unsigned short int mycrc = 0x0000;
/* fix and fill the DL field */
jwmarker[mm].epcmark->DL = new_size;
orig_buf[epc_pos + 6] = (unsigned char) (jwmarker[mm].epcmark->DL >> 24);
orig_buf[epc_pos + 7] = (unsigned char) (jwmarker[mm].epcmark->DL >> 16);
orig_buf[epc_pos + 8] = (unsigned char) (jwmarker[mm].epcmark->DL >> 8);
orig_buf[epc_pos + 9] = (unsigned char) (jwmarker[mm].epcmark->DL >> 0);
/* compute the CRC field (excluding itself) */
for (pp = 0; pp < 4; pp++)
jpwl_updateCRC16(&mycrc, orig_buf[epc_pos + pp]);
for (pp = 6; pp < (jwmarker[mm].len + 2); pp++)
jpwl_updateCRC16(&mycrc, orig_buf[epc_pos + pp]);
/* fix and fill the CRC */
jwmarker[mm].epcmark->Pcrc = mycrc;
orig_buf[epc_pos + 4] = (unsigned char) (jwmarker[mm].epcmark->Pcrc >> 8);
orig_buf[epc_pos + 5] = (unsigned char) (jwmarker[mm].epcmark->Pcrc >> 0);
}
}
/* then, sensitivity data in ESDs */
esdcoding_time = opj_clock();
for (mm = 0; mm < jwmarker_num; mm++) {
/* find the ESDs */
if (jwmarker[mm].id == J2K_MS_ESD) {
/* remember that they are now in a new position (dpos) */
int esd_pos = (int) jwmarker[mm].dpos;
jpwl_esd_fill(j2k, jwmarker[mm].esdmark, &orig_buf[esd_pos]);
}
}
esdcoding_time = opj_clock() - esdcoding_time;
if (j2k->cp->esd_on)
opj_event_msg(j2k->cinfo, EVT_INFO, "ESDs sensitivities computed in %f s\n", esdcoding_time);
/* finally, RS or CRC parity in EPBs */
epbcoding_time = opj_clock();
for (mm = 0; mm < jwmarker_num; mm++) {
/* find the EPBs */
if (jwmarker[mm].id == J2K_MS_EPB) {
/* remember that they are now in a new position (dpos) */
int nn, accum_len;
/* let's see how many EPBs are following this one, included itself */
/* for this to work, we suppose that the markers are correctly ordered */
/* and, overall, that they are in packed mode inside headers */
accum_len = 0;
for (nn = mm; (nn < jwmarker_num) && (jwmarker[nn].id == J2K_MS_EPB) &&
(jwmarker[nn].pos == jwmarker[mm].pos); nn++)
accum_len += jwmarker[nn].epbmark->Lepb + 2;
/* fill the current (first) EPB with post-data starting from the computed position */
jpwl_epb_fill(j2k, jwmarker[mm].epbmark, &orig_buf[(int) jwmarker[mm].dpos],
&orig_buf[(int) jwmarker[mm].dpos + accum_len]);
/* fill the remaining EPBs in the header with post-data starting from the last position */
for (nn = mm + 1; (nn < jwmarker_num) && (jwmarker[nn].id == J2K_MS_EPB) &&
(jwmarker[nn].pos == jwmarker[mm].pos); nn++)
jpwl_epb_fill(j2k, jwmarker[nn].epbmark, &orig_buf[(int) jwmarker[nn].dpos], NULL);
/* skip all the processed EPBs */
mm = nn - 1;
}
}
epbcoding_time = opj_clock() - epbcoding_time;
if (j2k->cp->epb_on)
opj_event_msg(j2k->cinfo, EVT_INFO, "EPBs redundancy computed in %f s\n", epbcoding_time);
/* free original cio buffer and set it to the JPWL one */
opj_free(cio->buffer);
/*cio->cinfo;*/ /* no change */
/*cio->openmode;*/ /* no change */
cio->buffer = jpwl_buf - new_size;
cio->length = new_size;
cio->start = jpwl_buf - new_size;
cio->end = jpwl_buf - 1;
cio->bp = jpwl_buf - new_size;
cio_seek(cio, new_size);
}
void j2k_read_epc(opj_j2k_t *j2k) {
unsigned long int DL, Lepcp, Pcrcp, l;
unsigned short int Lepc, Pcrc = 0x0000;
unsigned char Pepc;
opj_cio_t *cio = j2k->cio;
char *ans1;
/* Simply read the EPC parameters */
Lepcp = cio_tell(cio);
Lepc = cio_read(cio, 2);
Pcrcp = cio_tell(cio);
cio_skip(cio, 2); /* Pcrc */
DL = cio_read(cio, 4);
Pepc = cio_read(cio, 1);
/* compute Pcrc */
cio_seek(cio, Lepcp - 2);
/* Marker */
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
/* Length */
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
/* skip Pcrc */
cio_skip(cio, 2);
/* read all remaining */
for (l = 4; l < Lepc; l++)
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
/* check Pcrc with the result */
cio_seek(cio, Pcrcp);
ans1 = (Pcrc == (unsigned short int) cio_read(cio, 2)) ? "crc-ok" : "crc-ko";
/* now we write them to screen */
opj_event_msg(j2k->cinfo, EVT_INFO,
"EPC(%u,%d): %s, DL=%d%s %s %s\n",
Lepcp - 2,
Lepc,
ans1,
DL, /* data length this EPC is referring to */
(Pepc & 0x10) ? ", esd" : "", /* ESD is present */
(Pepc & 0x20) ? ", red" : "", /* RED is present */
(Pepc & 0x40) ? ", epb" : ""); /* EPB is present */
cio_seek(cio, Lepcp + Lepc);
}
void j2k_write_epc(opj_j2k_t *j2k) {
unsigned long int DL, Lepcp, Pcrcp, l;
unsigned short int Lepc, Pcrc;
unsigned char Pepc;
opj_cio_t *cio = j2k->cio;
cio_write(cio, J2K_MS_EPC, 2); /* EPC */
Lepcp = cio_tell(cio);
cio_skip(cio, 2);
/* CRC-16 word of the EPC */
Pcrc = 0x0000; /* initialize */
Pcrcp = cio_tell(cio);
cio_write(cio, Pcrc, 2); /* Pcrc placeholder*/
/* data length of the EPC protection domain */
DL = 0x00000000; /* we leave this set to 0, as if the information is not available */
cio_write(cio, DL, 4); /* DL */
/* jpwl capabilities */
Pepc = 0x00;
cio_write(cio, Pepc, 1); /* Pepc */
/* ID section */
/* no ID's, as of now */
Lepc = (unsigned short) (cio_tell(cio) - Lepcp);
cio_seek(cio, Lepcp);
cio_write(cio, Lepc, 2); /* Lepc */
/* compute Pcrc */
cio_seek(cio, Lepcp - 2);
/* Marker */
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
/* Length */
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
/* skip Pcrc */
cio_skip(cio, 2);
/* read all remaining */
for (l = 4; l < Lepc; l++)
jpwl_updateCRC16(&Pcrc, (unsigned char) cio_read(cio, 1));
/* fill Pcrc with the result */
cio_seek(cio, Pcrcp);
cio_write(cio, Pcrc, 2);
cio_seek(cio, Lepcp + Lepc);
}
void j2k_read_epb(opj_j2k_t *j2k) {
unsigned long int LDPepb, Pepb;
unsigned short int Lepb;
unsigned char Depb;
char str1[25] = "";
bool status;
static bool first_in_tph = true;
int type, pre_len, post_len;
static unsigned char *redund = NULL;
opj_cio_t *cio = j2k->cio;
/* B/W = 45, RGB = 51 */
/* SIZ SIZ_FIELDS SIZ_COMPS FOLLOWING_MARKER */
int skipnum = 2 + 38 + 3 * j2k->cp->exp_comps + 2;
if (j2k->cp->correct) {
/* go back to EPB marker value */
cio_seek(cio, cio_tell(cio) - 2);
/* we need to understand where we are */
if (j2k->state == J2K_STATE_MH) {
/* we are in MH */
type = 0; /* MH */
pre_len = skipnum; /* SOC+SIZ */
post_len = -1; /* auto */
} else if ((j2k->state == J2K_STATE_TPH) && first_in_tph) {
/* we are in TPH */
type = 1; /* TPH */
pre_len = 12; /* SOC+SIZ */
first_in_tph = false;
post_len = -1; /* auto */
} else {
/* we are elsewhere */
type = 2; /* other */
pre_len = 0; /* nada */
post_len = -1; /* auto */
}
/* call EPB corrector */
/*printf("before %x, ", redund);*/
status = jpwl_epb_correct(j2k, /* J2K decompressor handle */
cio->bp, /* pointer to EPB in codestream buffer */
type, /* EPB type: MH */
pre_len, /* length of pre-data */
post_len, /* length of post-data: -1 means auto */
NULL, /* do everything auto */
&redund
);
/*printf("after %x\n", redund);*/
/* Read the (possibly corrected) EPB parameters */
cio_skip(cio, 2);
Lepb = cio_read(cio, 2);
Depb = cio_read(cio, 1);
LDPepb = cio_read(cio, 4);
Pepb = cio_read(cio, 4);
if (!status) {
opj_event_msg(j2k->cinfo, EVT_ERROR, "JPWL correction could not be performed\n");
/* advance to EPB endpoint */
cio_skip(cio, Lepb + 2);
return;
}
/* last in current header? */
if (Depb & 0x40) {
redund = NULL; /* reset the pointer to L4 buffer */
first_in_tph = true;
}
/* advance to EPB endpoint */
cio_skip(cio, Lepb - 11);
} else {
/* Simply read the EPB parameters */
Lepb = cio_read(cio, 2);
Depb = cio_read(cio, 1);
LDPepb = cio_read(cio, 4);
Pepb = cio_read(cio, 4);
/* What does Pepb tells us about the protection method? */
if (((Pepb & 0xF0000000) >> 28) == 0)
sprintf(str1, "pred"); /* predefined */
else if (((Pepb & 0xF0000000) >> 28) == 1)
sprintf(str1, "crc-%d", 16 * ((Pepb & 0x00000001) + 1)); /* CRC mode */
else if (((Pepb & 0xF0000000) >> 28) == 2)
sprintf(str1, "rs(%d,32)", (Pepb & 0x0000FF00) >> 8); /* RS mode */
else if (Pepb == 0xFFFFFFFF)
sprintf(str1, "nometh"); /* RS mode */
else
sprintf(str1, "unknown"); /* unknown */
/* Now we write them to screen */
opj_event_msg(j2k->cinfo, EVT_INFO,
"EPB(%d): (%sl, %sp, %u), %lu, %s\n",
cio_tell(cio) - 13,
(Depb & 0x40) ? "" : "n", /* latest EPB or not? */
(Depb & 0x80) ? "" : "n", /* packed or unpacked EPB? */
(Depb & 0x3F), /* EPB index value */
LDPepb, /*length of the data protected by the EPB */
str1); /* protection method */
cio_skip(cio, Lepb - 11);
}
}
void j2k_write_epb(opj_j2k_t *j2k) {
unsigned long int LDPepb, Pepb, Lepbp;
unsigned short int Lepb;
unsigned char Depb;
opj_cio_t *cio = j2k->cio;
cio_write(cio, J2K_MS_EPB, 2); /* EPB */
Lepbp = cio_tell(cio);
cio_skip(cio, 2);
/* EPB style */
Depb = 0x00; /* test */
cio_write(cio, Depb, 1); /* Depb */
/* length of the data to be protected by this EPB */
LDPepb = 0x00000000; /* test */
cio_write(cio, LDPepb, 4); /* LDPepb */
/* next error correction tool */
Pepb = 0x00000000; /* test */
cio_write(cio, Pepb, 4); /* Pepb */
/* EPB data */
/* no data, as of now */
Lepb = (unsigned short) (cio_tell(cio) - Lepbp);
cio_seek(cio, Lepbp);
cio_write(cio, Lepb, 2); /* Lepb */
cio_seek(cio, Lepbp + Lepb);
}
void j2k_read_esd(opj_j2k_t *j2k) {
unsigned short int Lesd, Cesd;
unsigned char Pesd;
int cesdsize = (j2k->image->numcomps >= 257) ? 2 : 1;
char str1[4][4] = {"p", "br", "pr", "res"};
char str2[8][8] = {"res", "mse", "mse-r", "psnr", "psnr-i", "maxerr", "tse", "res"};
opj_cio_t *cio = j2k->cio;
/* Simply read the ESD parameters */
Lesd = cio_read(cio, 2);
Cesd = cio_read(cio, cesdsize);
Pesd = cio_read(cio, 1);
/* Now we write them to screen */
opj_event_msg(j2k->cinfo, EVT_INFO,
"ESD(%d): c%d, %s, %s, %s, %s, %s\n",
cio_tell(cio) - (5 + cesdsize),
Cesd, /* component number for this ESD */
str1[(Pesd & (unsigned char) 0xC0) >> 6], /* addressing mode */
str2[(Pesd & (unsigned char) 0x38) >> 3], /* sensitivity type */
((Pesd & (unsigned char) 0x04) >> 2) ? "2Bs" : "1Bs",
((Pesd & (unsigned char) 0x02) >> 1) ? "4Ba" : "2Ba",
(Pesd & (unsigned char) 0x01) ? "avgc" : "");
cio_skip(cio, Lesd - (3 + cesdsize));
}
void j2k_read_red(opj_j2k_t *j2k) {
unsigned short int Lred;
unsigned char Pred;
char str1[4][4] = {"p", "br", "pr", "res"};
opj_cio_t *cio = j2k->cio;
/* Simply read the RED parameters */
Lred = cio_read(cio, 2);
Pred = cio_read(cio, 1);
/* Now we write them to screen */
opj_event_msg(j2k->cinfo, EVT_INFO,
"RED(%d): %s, %dc, %s, %s\n",
cio_tell(cio) - 5,
str1[(Pred & (unsigned char) 0xC0) >> 6], /* addressing mode */
(Pred & (unsigned char) 0x38) >> 3, /* corruption level */
((Pred & (unsigned char) 0x02) >> 1) ? "4Ba" : "2Ba", /* address range */
(Pred & (unsigned char) 0x01) ? "errs" : "free"); /* error free? */
cio_skip(cio, Lred - 3);
}
bool jpwl_check_tile(opj_j2k_t *j2k, opj_tcd_t *tcd, int tileno) {
/*
we navigate through the tile and find possible invalid parameters:
this saves a lot of crashes!!!!!
*/
int compno, resno, precno, /*layno,*/ bandno, blockno;
int numprecincts, numblocks;
/* this is the selected tile */
opj_tcd_tile_t *tile = &(tcd->tcd_image->tiles[tileno]);
/* will keep the component */
opj_tcd_tilecomp_t *comp = NULL;
/* will keep the resolution */
opj_tcd_resolution_t *res;
/* will keep the subband */
opj_tcd_band_t *band;
/* will keep the precinct */
opj_tcd_precinct_t *prec;
/* will keep the codeblock */
opj_tcd_cblk_t *block;
/* check all tile components */
for (compno = 0; compno < tile->numcomps; compno++) {
comp = &(tile->comps[compno]);
/* check all component resolutions */
for (resno = 0; resno < comp->numresolutions; resno++) {
res = &(comp->resolutions[resno]);
numprecincts = res->pw * res->ph;
/* check all the subbands */
for (bandno = 0; bandno < res->numbands; bandno++) {
band = &(res->bands[bandno]);
/* check all the precincts */
for (precno = 0; precno < numprecincts; precno++) {
prec = &(band->precincts[precno]);
numblocks = prec->ch * prec->cw;
/* check all the codeblocks */
for (blockno = 0; blockno < numblocks; blockno++) {
block = &(prec->cblks[blockno]);
/* x-origin is invalid */
if ((block->x0 < prec->x0) || (block->x0 > prec->x1)) {
opj_event_msg(j2k->cinfo, JPWL_ASSUME ? EVT_WARNING : EVT_ERROR,
"JPWL: wrong x-cord of block origin %d => x-prec is (%d, %d)\n",
block->x0, prec->x0, prec->x1);
if (!JPWL_ASSUME || JPWL_ASSUME)
return false;
};
}
}
}
}
}
return true;
}
/*@}*/
#endif /* USE_JPWL */