/* * Copyright (c) 2001-2003, David Janssens * Copyright (c) 2002-2003, Yannick Verschueren * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe * Copyright (c) 2005, Herve 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. */ #include "opj_includes.h" #ifdef USE_JPWL /** @defgroup JPWL JPWL - JPEG-2000 Part11 (JPWL) codestream manager */ /*@{*/ /** @name Local static variables */ /*@{*/ /** number of JPWL prepared markers */ static int jwmarker_num; /** properties of JPWL markers to insert */ static jpwl_marker_t jwmarker[JPWL_MAX_NO_MARKERS]; /*@}*/ /*@}*/ /** @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, opj_bool esd_on, opj_bool red_on, opj_bool epb_on, opj_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 arg1pos_correction = 0; } opj_bool j2k_add_marker(opj_codestream_info_t *cstr_info, unsigned short int type, int pos, int len) { if (!cstr_info) return; /* expand the list? */ if ((cstr_info->marknum + 1) > cstr_info->maxmarknum) { opj_marker_info_t* new_marker; cstr_info->maxmarknum += 100; new_marker = (opj_marker_info_t*)opj_realloc(cstr_info->marker, cstr_info->maxmarknum * sizeof(opj_marker_info_t)); if (! new_marker) { opj_free(cstr_info->marker); cstr_info->marker = 0; cstr_info->marknum = 0; cstr_info->maxmarknum = 0; opj_event_msg_v2(p_manager, EVT_ERROR, "Not enough memory to add a marker\n"); // TODO: find a better error message TODO_test_add_marker_result; return OPJ_FALSE; } cstr_info->marker = new_marker; } /* add the marker */ cstr_info->marker[cstr_info->marknum].type = type; cstr_info->marker[cstr_info->marknum].pos = pos; cstr_info->marker[cstr_info->marknum].len = len; cstr_info->marknum++; return OPJ_TRUE; } 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), soc_pos = j2k->cstr_info->main_head_start; unsigned char *socp = NULL; int tileno, acc_tpno, tpno, 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; (void)image; /* find (SOC + SIZ) length */ /* I assume SIZ is always the first marker after SOC */ cio_seek(cio, soc_pos + 4); socsiz_len = (unsigned short int) cio_read(cio, 2) + 4; /* add the 2 marks length itself */ cio_seek(cio, soc_pos + 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? */ OPJ_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].m.epcmark = epc_mark; /* the EPC */ jwmarker[jwmarker_num].pos = soc_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 = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].pos_ready = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].parms_ready = OPJ_FALSE; /* not ready */ jwmarker[jwmarker_num].data_ready = OPJ_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->cstr_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].m.esdmark = esd_mark; /* the EPB */ jwmarker[jwmarker_num].pos = soc_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 = OPJ_TRUE; /* not ready, yet */ jwmarker[jwmarker_num].pos_ready = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].parms_ready = OPJ_TRUE; /* not ready */ jwmarker[jwmarker_num].data_ready = OPJ_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 tiles */ sens = -1; /* default spec: no ESD */ tilespec = 0; /* first tile spec */ acc_tpno = 0; for (tileno = 0; tileno < j2k->cstr_info->tw * j2k->cstr_info->th; tileno++) { opj_event_msg(j2k->cinfo, EVT_INFO, "Tile %d has %d tile part(s)\n", tileno, j2k->cstr_info->tile[tileno].num_tps ); /* for every tile part in the tile */ for (tpno = 0; tpno < j2k->cstr_info->tile[tileno].num_tps; tpno++, acc_tpno++) { int sot_len, Psot, Psotp, mm; unsigned long sot_pos, post_sod_pos; unsigned long int left_THmarks_len; /******* sot_pos = j2k->cstr_info->tile[tileno].start_pos; */ sot_pos = j2k->cstr_info->tile[tileno].tp[tpno].tp_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->cstr_info->tile[tileno].end_header + 1; */ post_sod_pos = j2k->cstr_info->tile[tileno].tp[tpno].tp_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)) */ if ((tilespec < JPWL_MAX_NO_TILESPECS) && (j2k->cp->sens_TPH_tileno[tilespec] == acc_tpno)) /* 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].m.esdmark = esd_mark; /* the EPB */ /****** jwmarker[jwmarker_num].pos = j2k->cstr_info->tile[tileno].start_pos + sot_len + 2; */ /* after SOT */ jwmarker[jwmarker_num].pos = j2k->cstr_info->tile[tileno].tp[tpno].tp_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 = OPJ_TRUE; /* ready, yet */ jwmarker[jwmarker_num].pos_ready = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].parms_ready = OPJ_TRUE; /* not ready */ jwmarker[jwmarker_num].data_ready = OPJ_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", */ "TPH ESDs: tile %02d, part %02d, method %d\n", /******* tileno, */ tileno, tpno, sens ); } else { /* ooops, problems */ /***** opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create TPH ESD #%d\n", tileno); */ opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create TPH ESD #%d,%d\n", tileno, tpno); }; } } }; /* 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->cstr_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 < sot_pos) { /* jwmarker[mm].pos >=0 since ulong */ 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 */ OPJ_TRUE, /* is it the latest? */ OPJ_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].m.epbmark = epb_mark; /* the EPB */ jwmarker[jwmarker_num].pos = soc_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 = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].pos_ready = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].parms_ready = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].data_ready = OPJ_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; acc_tpno = 0; for (tileno = 0; tileno < j2k->cstr_info->tw * j2k->cstr_info->th; tileno++) { opj_event_msg(j2k->cinfo, EVT_INFO, "Tile %d has %d tile part(s)\n", tileno, j2k->cstr_info->tile[tileno].num_tps ); /* for every tile part in the tile */ for (tpno = 0; tpno < j2k->cstr_info->tile[tileno].num_tps; tpno++, acc_tpno++) { 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->cstr_info->packno; int first_tp_pack, last_tp_pack; jpwl_epb_ms_t *tph_epb = NULL; /****** sot_pos = j2k->cstr_info->tile[tileno].start_pos; */ sot_pos = j2k->cstr_info->tile[tileno].tp[tpno].tp_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 */ /* a-priori length of the data dwelling between SOT and SOD */ /****** post_sod_pos = j2k->cstr_info->tile[tileno].end_header + 1; */ post_sod_pos = j2k->cstr_info->tile[tileno].tp[tpno].tp_end_header + 1; left_THmarks_len = post_sod_pos - (sot_pos + sot_len + 2); /* add all the lengths of the JPWL 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)) */ if ((tilespec < JPWL_MAX_NO_TILESPECS) && (j2k->cp->hprot_TPH_tileno[tilespec] == acc_tpno)) /* we got a specification from this tile part 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 */ OPJ_FALSE, /* is it the latest? in TPH, no for now (if huge data size in TPH, we'd need more) */ OPJ_TRUE, /* is it packed? yes 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].m.epbmark = epb_mark; /* the EPB */ /****** jwmarker[jwmarker_num].pos = j2k->cstr_info->tile[tileno].start_pos + sot_len + 2; */ /* after SOT */ jwmarker[jwmarker_num].pos = j2k->cstr_info->tile[tileno].tp[tpno].tp_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 = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].pos_ready = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].parms_ready = OPJ_TRUE; /* ready */ jwmarker[jwmarker_num].data_ready = OPJ_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", */ "TPH EPB : tile %02d, part %02d, prot. %d\n", /***** tileno, */ tileno, tpno, hprot ); /* save this TPH EPB address */ tph_epb = epb_mark; } else { /* ooops, problems */ /****** opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create TPH EPB #%d\n", tileno); */ opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not create TPH EPB in #%d,d\n", tileno, tpno); }; } startpack = 0; /* EPB MSs for UEP packet data protection in Tile Parts */ /****** for (packno = 0; packno < j2k->cstr_info->num; packno++) { */ /*first_tp_pack = (tpno > 0) ? (first_tp_pack + j2k->cstr_info->tile[tileno].tp[tpno - 1].tp_numpacks) : 0;*/ first_tp_pack = j2k->cstr_info->tile[tileno].tp[tpno].tp_start_pack; last_tp_pack = first_tp_pack + j2k->cstr_info->tile[tileno].tp[tpno].tp_numpacks - 1; for (packno = 0; packno < j2k->cstr_info->tile[tileno].tp[tpno].tp_numpacks; packno++) { /******** if ((packspec < JPWL_MAX_NO_PACKSPECS) && (j2k->cp->pprot_tileno[packspec] == tileno) && (j2k->cp->pprot_packno[packspec] == packno)) { */ if ((packspec < JPWL_MAX_NO_PACKSPECS) && (j2k->cp->pprot_tileno[packspec] == acc_tpno) && (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", */ "UEP EPBs: tile %02d, part %02d, packs. %02d-%02d (B %d-%d), prot. %d\n", /***** tileno, */ tileno, tpno, startpack, stoppack, /***** j2k->cstr_info->tile[tileno].packet[startpack].start_pos, */ j2k->cstr_info->tile[tileno].packet[first_tp_pack + startpack].start_pos, /***** j2k->cstr_info->tile[tileno].packet[stoppack].end_pos, */ j2k->cstr_info->tile[tileno].packet[first_tp_pack + stoppack].end_pos, pprot); /***** prot_len = j2k->cstr_info->tile[tileno].packet[stoppack].end_pos + 1 - j2k->cstr_info->tile[tileno].packet[startpack].start_pos; */ prot_len = j2k->cstr_info->tile[tileno].packet[first_tp_pack + stoppack].end_pos + 1 - j2k->cstr_info->tile[tileno].packet[first_tp_pack + 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->cstr_info->tw * j2k->cstr_info->th) - 1)) && (stoppack == (j2k->cstr_info->num - 1))) */ if ((tileno == ((j2k->cstr_info->tw * j2k->cstr_info->th) - 1)) && (tpno == (j2k->cstr_info->tile[tileno].num_tps - 1)) && (stoppack == last_tp_pack)) /* 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 */ OPJ_FALSE, /* latest */ OPJ_TRUE, /* packed */ OPJ_FALSE, /* inside MH */ &epb_index, /* pointer to EPB index */ pprot, /* protection type */ /****** (double) (j2k->cstr_info->tile[tileno].start_pos + sot_len + 2) + 0.0001, */ /* position */ (double) (j2k->cstr_info->tile[tileno].tp[tpno].tp_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", */ "UEP EPBs: tile %02d, part %02d, packs. %02d-%02d (B %d-%d), prot. %d\n", /**** tileno, */ tileno, tpno, startpack, stoppack, /***** j2k->image_info->tile[tileno].packet[startpack].start_pos, j2k->image_info->tile[tileno].packet[stoppack].end_pos, */ j2k->cstr_info->tile[tileno].packet[first_tp_pack + startpack].start_pos, j2k->cstr_info->tile[tileno].packet[first_tp_pack + stoppack].end_pos, pprot); /***** prot_len = j2k->cstr_info->tile[tileno].packet[stoppack].end_pos + 1 - j2k->cstr_info->tile[tileno].packet[startpack].start_pos; */ prot_len = j2k->cstr_info->tile[tileno].packet[first_tp_pack + stoppack].end_pos + 1 - j2k->cstr_info->tile[tileno].packet[first_tp_pack + 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->cstr_info->tw * j2k->cstr_info->th) - 1)) && (stoppack == (j2k->cstr_info->num - 1))) */ if ((tileno == ((j2k->cstr_info->tw * j2k->cstr_info->th) - 1)) && (tpno == (j2k->cstr_info->tile[tileno].num_tps - 1)) && (stoppack == last_tp_pack)) /* 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 */ OPJ_TRUE, /* latest */ OPJ_TRUE, /* packed */ OPJ_FALSE, /* inside MH */ &epb_index, /* pointer to EPB index */ pprot, /* protection type */ /***** (double) (j2k->cstr_info->tile[tileno].start_pos + sot_len + 2) + 0.0001,*/ /* position */ (double) (j2k->cstr_info->tile[tileno].tp[tpno].tp_start_pos + sot_len + 2) + 0.0001, /* position */ tileno, /* number of tile */ 0, /* length of pre-data */ prot_len /*4000*/ /* length of post-data */ ); } /* we can now check if the TPH EPB was really the last one */ if (tph_epb && (epb_index == 1)) { /* set the TPH EPB to be the last one in current header */ tph_epb->Depb |= (unsigned char) ((OPJ_TRUE & 0x0001) << 6); tph_epb = NULL; } /* 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->cstr_info->codestream_size; unsigned long int new_size = old_size; int /*ciopos = cio_tell(cio),*/ soc_pos = j2k->cstr_info->main_head_start; unsigned char *jpwl_buf, *orig_buf; unsigned long int orig_pos; double epbcoding_time = 0.0, esdcoding_time = 0.0; (void)image; /* 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 new buffer of proper size */ if (!(jpwl_buf = (unsigned char *) opj_malloc((size_t) (new_size + soc_pos) * sizeof(unsigned char)))) { opj_event_msg(j2k->cinfo, EVT_ERROR, "Could not allocate room for JPWL codestream buffer\n"); exit(1); }; /* copy the jp2 part, if any */ orig_buf = jpwl_buf; memcpy(jpwl_buf, cio->buffer, soc_pos); jpwl_buf += soc_pos; /* cycle through markers */ orig_pos = soc_pos + 0; /* start from the beginning */ cio_seek(cio, soc_pos + 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(j2k, jwmarker[mm].m.epbmark, jpwl_buf); break; case J2K_MS_EPC: jpwl_epc_write(j2k, jwmarker[mm].m.epcmark, jpwl_buf); break; case J2K_MS_ESD: jpwl_esd_write(j2k, jwmarker[mm].m.esdmark, jpwl_buf); break; case J2K_MS_RED: memset(jpwl_buf, 0, jwmarker[mm].len + 2); /* placeholder */ break; default: break; }; /* we update the markers struct */ if (j2k->cstr_info) j2k->cstr_info->marker[j2k->cstr_info->marknum - 1].pos = (jpwl_buf - orig_buf); /* 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 - soc_pos)); jpwl_buf += old_size - (orig_pos - soc_pos); cio_seek(cio, soc_pos + 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 cstr_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].m.epcmark->DL = new_size; orig_buf[epc_pos + 6] = (unsigned char) (jwmarker[mm].m.epcmark->DL >> 24); orig_buf[epc_pos + 7] = (unsigned char) (jwmarker[mm].m.epcmark->DL >> 16); orig_buf[epc_pos + 8] = (unsigned char) (jwmarker[mm].m.epcmark->DL >> 8); orig_buf[epc_pos + 9] = (unsigned char) (jwmarker[mm].m.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].m.epcmark->Pcrc = mycrc; orig_buf[epc_pos + 4] = (unsigned char) (jwmarker[mm].m.epcmark->Pcrc >> 8); orig_buf[epc_pos + 5] = (unsigned char) (jwmarker[mm].m.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].m.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].m.epbmark->Lepb + 2; /* fill the current (first) EPB with post-data starting from the computed position */ jpwl_epb_fill(j2k, jwmarker[mm].m.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].m.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 = cio->cinfo; /* no change */ cio->openmode = cio->openmode; /* no change */ cio->buffer = orig_buf; cio->length = new_size + soc_pos; cio->start = cio->buffer; cio->end = cio->buffer + cio->length; cio->bp = cio->buffer; cio_seek(cio, soc_pos + 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; const 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); } #if 0 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); /* marker struct update */ j2k_add_marker(j2k->cstr_info, J2K_MS_EPC, Lepcp - 2, Lepc + 2); } #endif void j2k_read_epb(opj_j2k_t *j2k) { unsigned long int LDPepb, Pepb; unsigned short int Lepb; unsigned char Depb; char str1[25] = ""; opj_bool status; static opj_bool first_in_tph = OPJ_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 = OPJ_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 = OPJ_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-%lu", 16 * ((Pepb & 0x00000001) + 1)); /* CRC mode */ else if (((Pepb & 0xF0000000) >> 28) == 2) sprintf(str1, "rs(%lu,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); /* marker struct update */ j2k_add_marker(j2k->cstr_info, J2K_MS_EPB, Lepbp - 2, Lepb + 2); } 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); } opj_bool jpwl_check_tile(opj_j2k_t *j2k, opj_tcd_t *tcd, int tileno) { #ifdef oerhgierhgvhreit4u /* 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 OPJ_FALSE; }; } } } } } #else (void)j2k; (void)tcd; (void)tileno; #endif return OPJ_TRUE; } /*@}*/ #endif /* USE_JPWL */ #ifdef USE_JPSEC /** @defgroup JPSEC JPSEC - JPEG-2000 Part 8 (JPSEC) codestream manager */ /*@{*/ /** @name Local static functions */ /*@{*/ void j2k_read_sec(opj_j2k_t *j2k) { unsigned short int Lsec; opj_cio_t *cio = j2k->cio; /* Simply read the SEC length */ Lsec = cio_read(cio, 2); /* Now we write them to screen */ opj_event_msg(j2k->cinfo, EVT_INFO, "SEC(%d)\n", cio_tell(cio) - 2 ); cio_skip(cio, Lsec - 2); } void j2k_write_sec(opj_j2k_t *j2k) { unsigned short int Lsec = 24; int i; opj_cio_t *cio = j2k->cio; cio_write(cio, J2K_MS_SEC, 2); /* SEC */ cio_write(cio, Lsec, 2); /* write dummy data */ for (i = 0; i < Lsec - 2; i++) cio_write(cio, 0, 1); } void j2k_read_insec(opj_j2k_t *j2k) { unsigned short int Linsec; opj_cio_t *cio = j2k->cio; /* Simply read the INSEC length */ Linsec = cio_read(cio, 2); /* Now we write them to screen */ opj_event_msg(j2k->cinfo, EVT_INFO, "INSEC(%d)\n", cio_tell(cio) - 2 ); cio_skip(cio, Linsec - 2); } /*@}*/ /*@}*/ #endif /* USE_JPSEC */