/* * The copyright in this software is being made available under the 2-clauses * BSD License, included below. This software may be subject to other third * party and contributor rights, including patent rights, and no such rights * are granted under this license. * * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium * Copyright (c) 2002-2014, Professor Benoit Macq * Copyright (c) 2001-2003, David Janssens * Copyright (c) 2002-2003, Yannick Verschueren * Copyright (c) 2003-2007, Francois-Olivier Devaux * Copyright (c) 2003-2014, Antonin Descampe * Copyright (c) 2005, Herve Drolon, FreeImage Team * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR * Copyright (c) 2012, CS Systemes d'Information, France * Copyright (c) 2017, IntoPIX SA * 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" #include "opj_common.h" /** @defgroup T2 T2 - Implementation of a tier-2 coding */ /*@{*/ /** @name Local static functions */ /*@{*/ static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n); static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio); /** Variable length code for signalling delta Zil (truncation point) @param bio Bit Input/Output component @param n delta Zil */ static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n); static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio); /** Encode a packet of a tile to a destination buffer @param tileno Number of the tile encoded @param tile Tile for which to write the packets @param tcp Tile coding parameters @param pi Packet identity @param dest Destination buffer @param p_data_written FIXME DOC @param len Length of the destination buffer @param cstr_info Codestream information structure @param p_t2_mode If == THRESH_CALC In Threshold calculation ,If == FINAL_PASS Final pass @param p_manager the user event manager @return */ static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno, opj_tcd_tile_t *tile, opj_tcp_t *tcp, opj_pi_iterator_t *pi, OPJ_BYTE *dest, OPJ_UINT32 * p_data_written, OPJ_UINT32 len, opj_codestream_info_t *cstr_info, J2K_T2_MODE p_t2_mode, opj_event_mgr_t *p_manager); /** Decode a packet of a tile from a source buffer @param t2 T2 handle @param tile Tile for which to write the packets @param tcp Tile coding parameters @param pi Packet identity @param src Source buffer @param data_read FIXME DOC @param max_length FIXME DOC @param pack_info Packet information @param p_manager the user event manager @return FIXME DOC */ static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* t2, opj_tcd_tile_t *tile, opj_tcp_t *tcp, opj_pi_iterator_t *pi, OPJ_BYTE *src, OPJ_UINT32 * data_read, OPJ_UINT32 max_length, opj_packet_info_t *pack_info, opj_event_mgr_t *p_manager); static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_tcp_t *p_tcp, opj_pi_iterator_t *p_pi, OPJ_BYTE *p_src, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *p_pack_info, opj_event_mgr_t *p_manager); static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_tcp_t *p_tcp, opj_pi_iterator_t *p_pi, OPJ_BOOL * p_is_data_present, OPJ_BYTE *p_src_data, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *p_pack_info, opj_event_mgr_t *p_manager); static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_pi_iterator_t *p_pi, OPJ_BYTE *p_src_data, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *pack_info, opj_event_mgr_t *p_manager); static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_pi_iterator_t *p_pi, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *pack_info, opj_event_mgr_t *p_manager); /** @param cblk @param index @param cblksty @param first */ static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk, OPJ_UINT32 index, OPJ_UINT32 cblksty, OPJ_UINT32 first); /*@}*/ /*@}*/ /* ----------------------------------------------------------------------- */ /* #define RESTART 0x04 */ static void opj_t2_putcommacode(opj_bio_t *bio, OPJ_INT32 n) { while (--n >= 0) { opj_bio_putbit(bio, 1); } opj_bio_putbit(bio, 0); } static OPJ_UINT32 opj_t2_getcommacode(opj_bio_t *bio) { OPJ_UINT32 n = 0; while (opj_bio_read(bio, 1)) { ++n; } return n; } static void opj_t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n) { if (n == 1) { opj_bio_putbit(bio, 0); } else if (n == 2) { opj_bio_write(bio, 2, 2); } else if (n <= 5) { opj_bio_write(bio, 0xc | (n - 3), 4); } else if (n <= 36) { opj_bio_write(bio, 0x1e0 | (n - 6), 9); } else if (n <= 164) { opj_bio_write(bio, 0xff80 | (n - 37), 16); } } static OPJ_UINT32 opj_t2_getnumpasses(opj_bio_t *bio) { OPJ_UINT32 n; if (!opj_bio_read(bio, 1)) { return 1; } if (!opj_bio_read(bio, 1)) { return 2; } if ((n = opj_bio_read(bio, 2)) != 3) { return (3 + n); } if ((n = opj_bio_read(bio, 5)) != 31) { return (6 + n); } return (37 + opj_bio_read(bio, 7)); } /* ----------------------------------------------------------------------- */ OPJ_BOOL opj_t2_encode_packets(opj_t2_t* p_t2, OPJ_UINT32 p_tile_no, opj_tcd_tile_t *p_tile, OPJ_UINT32 p_maxlayers, OPJ_BYTE *p_dest, OPJ_UINT32 * p_data_written, OPJ_UINT32 p_max_len, opj_codestream_info_t *cstr_info, opj_tcd_marker_info_t* p_marker_info, OPJ_UINT32 p_tp_num, OPJ_INT32 p_tp_pos, OPJ_UINT32 p_pino, J2K_T2_MODE p_t2_mode, opj_event_mgr_t *p_manager) { OPJ_BYTE *l_current_data = p_dest; OPJ_UINT32 l_nb_bytes = 0; OPJ_UINT32 compno; OPJ_UINT32 poc; opj_pi_iterator_t *l_pi = 00; opj_pi_iterator_t *l_current_pi = 00; opj_image_t *l_image = p_t2->image; opj_cp_t *l_cp = p_t2->cp; opj_tcp_t *l_tcp = &l_cp->tcps[p_tile_no]; OPJ_UINT32 pocno = (l_cp->rsiz == OPJ_PROFILE_CINEMA_4K) ? 2 : 1; OPJ_UINT32 l_max_comp = l_cp->m_specific_param.m_enc.m_max_comp_size > 0 ? l_image->numcomps : 1; OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1; l_pi = opj_pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode, p_manager); if (!l_pi) { return OPJ_FALSE; } * p_data_written = 0; if (p_t2_mode == THRESH_CALC) { /* Calculating threshold */ l_current_pi = l_pi; for (compno = 0; compno < l_max_comp; ++compno) { OPJ_UINT32 l_comp_len = 0; l_current_pi = l_pi; for (poc = 0; poc < pocno ; ++poc) { OPJ_UINT32 l_tp_num = compno; /* TODO MSD : check why this function cannot fail (cf. v1) */ opj_pi_create_encode(l_pi, l_cp, p_tile_no, poc, l_tp_num, p_tp_pos, p_t2_mode); if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) { /* TODO ADE : add an error */ opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } while (opj_pi_next(l_current_pi)) { if (l_current_pi->layno < p_maxlayers) { l_nb_bytes = 0; if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info, p_t2_mode, p_manager)) { opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } l_comp_len += l_nb_bytes; l_current_data += l_nb_bytes; p_max_len -= l_nb_bytes; * p_data_written += l_nb_bytes; } } if (l_cp->m_specific_param.m_enc.m_max_comp_size) { if (l_comp_len > l_cp->m_specific_param.m_enc.m_max_comp_size) { opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } } ++l_current_pi; } } } else { /* t2_mode == FINAL_PASS */ opj_pi_create_encode(l_pi, l_cp, p_tile_no, p_pino, p_tp_num, p_tp_pos, p_t2_mode); l_current_pi = &l_pi[p_pino]; if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) { /* TODO ADE : add an error */ opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } if (p_marker_info && p_marker_info->need_PLT) { /* One time use intended */ assert(p_marker_info->packet_count == 0); assert(p_marker_info->p_packet_size == NULL); p_marker_info->p_packet_size = (OPJ_UINT32*) opj_malloc( opj_get_encoding_packet_count(l_image, l_cp, p_tile_no) * sizeof(OPJ_UINT32)); if (p_marker_info->p_packet_size == NULL) { opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } } while (opj_pi_next(l_current_pi)) { if (l_current_pi->layno < p_maxlayers) { l_nb_bytes = 0; if (! opj_t2_encode_packet(p_tile_no, p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info, p_t2_mode, p_manager)) { opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } l_current_data += l_nb_bytes; p_max_len -= l_nb_bytes; * p_data_written += l_nb_bytes; if (p_marker_info && p_marker_info->need_PLT) { p_marker_info->p_packet_size[p_marker_info->packet_count] = l_nb_bytes; p_marker_info->packet_count ++; } /* INDEX >> */ if (cstr_info) { if (cstr_info->index_write) { opj_tile_info_t *info_TL = &cstr_info->tile[p_tile_no]; opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->packno]; if (!cstr_info->packno) { info_PK->start_pos = info_TL->end_header + 1; } else { info_PK->start_pos = ((l_cp->m_specific_param.m_enc.m_tp_on | l_tcp->POC) && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->packno - 1].end_pos + 1; } info_PK->end_pos = info_PK->start_pos + l_nb_bytes - 1; info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance to start of packet is incremented by value of start of packet*/ } cstr_info->packno++; } /* << INDEX */ ++p_tile->packno; } } } opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_TRUE; } /* see issue 80 */ #if 0 #define JAS_FPRINTF fprintf #else /* issue 290 */ static void opj_null_jas_fprintf(FILE* file, const char * format, ...) { (void)file; (void)format; } #define JAS_FPRINTF opj_null_jas_fprintf #endif OPJ_BOOL opj_t2_decode_packets(opj_tcd_t* tcd, opj_t2_t *p_t2, OPJ_UINT32 p_tile_no, opj_tcd_tile_t *p_tile, OPJ_BYTE *p_src, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_len, opj_codestream_index_t *p_cstr_index, opj_event_mgr_t *p_manager) { OPJ_BYTE *l_current_data = p_src; opj_pi_iterator_t *l_pi = 00; OPJ_UINT32 pino; opj_image_t *l_image = p_t2->image; opj_cp_t *l_cp = p_t2->cp; opj_tcp_t *l_tcp = &(p_t2->cp->tcps[p_tile_no]); OPJ_UINT32 l_nb_bytes_read; OPJ_UINT32 l_nb_pocs = l_tcp->numpocs + 1; opj_pi_iterator_t *l_current_pi = 00; #ifdef TODO_MSD OPJ_UINT32 curtp = 0; OPJ_UINT32 tp_start_packno; #endif opj_packet_info_t *l_pack_info = 00; opj_image_comp_t* l_img_comp = 00; OPJ_ARG_NOT_USED(p_cstr_index); #ifdef TODO_MSD if (p_cstr_index) { l_pack_info = p_cstr_index->tile_index[p_tile_no].packet; } #endif /* create a packet iterator */ l_pi = opj_pi_create_decode(l_image, l_cp, p_tile_no, p_manager); if (!l_pi) { return OPJ_FALSE; } l_current_pi = l_pi; for (pino = 0; pino <= l_tcp->numpocs; ++pino) { /* if the resolution needed is too low, one dim of the tilec could be equal to zero * and no packets are used to decode this resolution and * l_current_pi->resno is always >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions * and no l_img_comp->resno_decoded are computed */ OPJ_BOOL* first_pass_failed = NULL; if (l_current_pi->poc.prg == OPJ_PROG_UNKNOWN) { /* TODO ADE : add an error */ opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } first_pass_failed = (OPJ_BOOL*)opj_malloc(l_image->numcomps * sizeof(OPJ_BOOL)); if (!first_pass_failed) { opj_pi_destroy(l_pi, l_nb_pocs); return OPJ_FALSE; } memset(first_pass_failed, OPJ_TRUE, l_image->numcomps * sizeof(OPJ_BOOL)); while (opj_pi_next(l_current_pi)) { OPJ_BOOL skip_packet = OPJ_FALSE; JAS_FPRINTF(stderr, "packet offset=00000166 prg=%d cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d\n\n", l_current_pi->poc.prg1, l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno); /* If the packet layer is greater or equal than the maximum */ /* number of layers, skip the packet */ if (l_current_pi->layno >= l_tcp->num_layers_to_decode) { skip_packet = OPJ_TRUE; } /* If the packet resolution number is greater than the minimum */ /* number of resolution allowed, skip the packet */ else if (l_current_pi->resno >= p_tile->comps[l_current_pi->compno].minimum_num_resolutions) { skip_packet = OPJ_TRUE; } else { /* If no precincts of any band intersects the area of interest, */ /* skip the packet */ OPJ_UINT32 bandno; opj_tcd_tilecomp_t *tilec = &p_tile->comps[l_current_pi->compno]; opj_tcd_resolution_t *res = &tilec->resolutions[l_current_pi->resno]; skip_packet = OPJ_TRUE; for (bandno = 0; bandno < res->numbands; ++bandno) { opj_tcd_band_t* band = &res->bands[bandno]; opj_tcd_precinct_t* prec = &band->precincts[l_current_pi->precno]; if (opj_tcd_is_subband_area_of_interest(tcd, l_current_pi->compno, l_current_pi->resno, band->bandno, (OPJ_UINT32)prec->x0, (OPJ_UINT32)prec->y0, (OPJ_UINT32)prec->x1, (OPJ_UINT32)prec->y1)) { skip_packet = OPJ_FALSE; break; } } /* printf("packet cmptno=%02d rlvlno=%02d prcno=%03d lyrno=%02d -> %s\n", l_current_pi->compno, l_current_pi->resno, l_current_pi->precno, l_current_pi->layno, skip_packet ? "skipped" : "kept"); */ } if (!skip_packet) { l_nb_bytes_read = 0; first_pass_failed[l_current_pi->compno] = OPJ_FALSE; if (! opj_t2_decode_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) { opj_pi_destroy(l_pi, l_nb_pocs); opj_free(first_pass_failed); return OPJ_FALSE; } l_img_comp = &(l_image->comps[l_current_pi->compno]); l_img_comp->resno_decoded = opj_uint_max(l_current_pi->resno, l_img_comp->resno_decoded); } else { l_nb_bytes_read = 0; if (! opj_t2_skip_packet(p_t2, p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes_read, p_max_len, l_pack_info, p_manager)) { opj_pi_destroy(l_pi, l_nb_pocs); opj_free(first_pass_failed); return OPJ_FALSE; } } if (first_pass_failed[l_current_pi->compno]) { l_img_comp = &(l_image->comps[l_current_pi->compno]); if (l_img_comp->resno_decoded == 0) { l_img_comp->resno_decoded = p_tile->comps[l_current_pi->compno].minimum_num_resolutions - 1; } } l_current_data += l_nb_bytes_read; p_max_len -= l_nb_bytes_read; /* INDEX >> */ #ifdef TODO_MSD if (p_cstr_info) { opj_tile_info_v2_t *info_TL = &p_cstr_info->tile[p_tile_no]; opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno]; tp_start_packno = 0; if (!p_cstr_info->packno) { info_PK->start_pos = info_TL->end_header + 1; } else if (info_TL->packet[p_cstr_info->packno - 1].end_pos >= (OPJ_INT32) p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_pos) { /* New tile part */ info_TL->tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in previous tile-part */ tp_start_packno = p_cstr_info->packno; curtp++; info_PK->start_pos = p_cstr_info->tile[p_tile_no].tp[curtp].tp_end_header + 1; } else { info_PK->start_pos = (l_cp->m_specific_param.m_enc.m_tp_on && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[p_cstr_info->packno - 1].end_pos + 1; } info_PK->end_pos = info_PK->start_pos + l_nb_bytes_read - 1; info_PK->end_ph_pos += info_PK->start_pos - 1; /* End of packet header which now only represents the distance */ ++p_cstr_info->packno; } #endif /* << INDEX */ } ++l_current_pi; opj_free(first_pass_failed); } /* INDEX >> */ #ifdef TODO_MSD if (p_cstr_info) { p_cstr_info->tile[p_tile_no].tp[curtp].tp_numpacks = p_cstr_info->packno - tp_start_packno; /* Number of packets in last tile-part */ } #endif /* << INDEX */ /* don't forget to release pi */ opj_pi_destroy(l_pi, l_nb_pocs); *p_data_read = (OPJ_UINT32)(l_current_data - p_src); return OPJ_TRUE; } /* ----------------------------------------------------------------------- */ /** * Creates a Tier 2 handle * * @param p_image Source or destination image * @param p_cp Image coding parameters. * @return a new T2 handle if successful, NULL otherwise. */ opj_t2_t* opj_t2_create(opj_image_t *p_image, opj_cp_t *p_cp) { /* create the t2 structure */ opj_t2_t *l_t2 = (opj_t2_t*)opj_calloc(1, sizeof(opj_t2_t)); if (!l_t2) { return NULL; } l_t2->image = p_image; l_t2->cp = p_cp; return l_t2; } void opj_t2_destroy(opj_t2_t *t2) { if (t2) { opj_free(t2); } } static OPJ_BOOL opj_t2_decode_packet(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_tcp_t *p_tcp, opj_pi_iterator_t *p_pi, OPJ_BYTE *p_src, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *p_pack_info, opj_event_mgr_t *p_manager) { OPJ_BOOL l_read_data; OPJ_UINT32 l_nb_bytes_read = 0; OPJ_UINT32 l_nb_total_bytes_read = 0; *p_data_read = 0; if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src, &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) { return OPJ_FALSE; } p_src += l_nb_bytes_read; l_nb_total_bytes_read += l_nb_bytes_read; p_max_length -= l_nb_bytes_read; /* we should read data for the packet */ if (l_read_data) { l_nb_bytes_read = 0; if (! opj_t2_read_packet_data(p_t2, p_tile, p_pi, p_src, &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) { return OPJ_FALSE; } l_nb_total_bytes_read += l_nb_bytes_read; } *p_data_read = l_nb_total_bytes_read; return OPJ_TRUE; } static OPJ_BOOL opj_t2_encode_packet(OPJ_UINT32 tileno, opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_iterator_t *pi, OPJ_BYTE *dest, OPJ_UINT32 * p_data_written, OPJ_UINT32 length, opj_codestream_info_t *cstr_info, J2K_T2_MODE p_t2_mode, opj_event_mgr_t *p_manager) { OPJ_UINT32 bandno, cblkno; OPJ_BYTE* c = dest; OPJ_UINT32 l_nb_bytes; OPJ_UINT32 compno = pi->compno; /* component value */ OPJ_UINT32 resno = pi->resno; /* resolution level value */ OPJ_UINT32 precno = pi->precno; /* precinct value */ OPJ_UINT32 layno = pi->layno; /* quality layer value */ OPJ_UINT32 l_nb_blocks; opj_tcd_band_t *band = 00; opj_tcd_cblk_enc_t* cblk = 00; opj_tcd_pass_t *pass = 00; opj_tcd_tilecomp_t *tilec = &tile->comps[compno]; opj_tcd_resolution_t *res = &tilec->resolutions[resno]; opj_bio_t *bio = 00; /* BIO component */ #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION OPJ_BOOL packet_empty = OPJ_TRUE; #else OPJ_BOOL packet_empty = OPJ_FALSE; #endif #ifdef DEBUG_VERBOSE if (p_t2_mode == FINAL_PASS) { fprintf(stderr, "encode packet compono=%d, resno=%d, precno=%d, layno=%d\n", compno, resno, precno, layno); } #endif /* */ if (tcp->csty & J2K_CP_CSTY_SOP) { if (length < 6) { if (p_t2_mode == FINAL_PASS) { opj_event_msg(p_manager, EVT_ERROR, "opj_t2_encode_packet(): only %u bytes remaining in " "output buffer. %u needed.\n", length, 6); } return OPJ_FALSE; } c[0] = 255; c[1] = 145; c[2] = 0; c[3] = 4; #if 0 c[4] = (tile->packno % 65536) / 256; c[5] = (tile->packno % 65536) % 256; #else c[4] = (tile->packno >> 8) & 0xff; /* packno is uint32_t */ c[5] = tile->packno & 0xff; #endif c += 6; length -= 6; } /* */ if (!layno) { band = res->bands; for (bandno = 0; bandno < res->numbands; ++bandno, ++band) { opj_tcd_precinct_t *prc; /* Skip empty bands */ if (opj_tcd_is_band_empty(band)) { continue; } /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1294 */ /* but likely not a proper fix. */ if (precno >= res->pw * res->ph) { opj_event_msg(p_manager, EVT_ERROR, "opj_t2_encode_packet(): accessing precno=%u >= %u\n", precno, res->pw * res->ph); return OPJ_FALSE; } prc = &band->precincts[precno]; opj_tgt_reset(prc->incltree); opj_tgt_reset(prc->imsbtree); l_nb_blocks = prc->cw * prc->ch; for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) { cblk = &prc->cblks.enc[cblkno]; cblk->numpasses = 0; opj_tgt_setvalue(prc->imsbtree, cblkno, band->numbps - (OPJ_INT32)cblk->numbps); } } } bio = opj_bio_create(); if (!bio) { /* FIXME event manager error callback */ return OPJ_FALSE; } opj_bio_init_enc(bio, c, length); #ifdef ENABLE_EMPTY_PACKET_OPTIMIZATION /* WARNING: this code branch is disabled, since it has been reported that */ /* such packets cause decoding issues with cinema J2K hardware */ /* decoders: https://groups.google.com/forum/#!topic/openjpeg/M7M_fLX_Bco */ /* Check if the packet is empty */ /* Note: we could also skip that step and always write a packet header */ band = res->bands; for (bandno = 0; bandno < res->numbands; ++bandno, ++band) { opj_tcd_precinct_t *prc; /* Skip empty bands */ if (opj_tcd_is_band_empty(band)) { continue; } prc = &band->precincts[precno]; l_nb_blocks = prc->cw * prc->ch; cblk = prc->cblks.enc; for (cblkno = 0; cblkno < l_nb_blocks; cblkno++, ++cblk) { opj_tcd_layer_t *layer = &cblk->layers[layno]; /* if cblk not included, go to the next cblk */ if (!layer->numpasses) { continue; } packet_empty = OPJ_FALSE; break; } if (!packet_empty) { break; } } #endif opj_bio_putbit(bio, packet_empty ? 0 : 1); /* Empty header bit */ /* Writing Packet header */ band = res->bands; for (bandno = 0; !packet_empty && bandno < res->numbands; ++bandno, ++band) { opj_tcd_precinct_t *prc; /* Skip empty bands */ if (opj_tcd_is_band_empty(band)) { continue; } /* Avoid out of bounds access of https://github.com/uclouvain/openjpeg/issues/1297 */ /* but likely not a proper fix. */ if (precno >= res->pw * res->ph) { opj_event_msg(p_manager, EVT_ERROR, "opj_t2_encode_packet(): accessing precno=%u >= %u\n", precno, res->pw * res->ph); return OPJ_FALSE; } prc = &band->precincts[precno]; l_nb_blocks = prc->cw * prc->ch; cblk = prc->cblks.enc; for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) { opj_tcd_layer_t *layer = &cblk->layers[layno]; if (!cblk->numpasses && layer->numpasses) { opj_tgt_setvalue(prc->incltree, cblkno, (OPJ_INT32)layno); } ++cblk; } cblk = prc->cblks.enc; for (cblkno = 0; cblkno < l_nb_blocks; cblkno++) { opj_tcd_layer_t *layer = &cblk->layers[layno]; OPJ_UINT32 increment = 0; OPJ_UINT32 nump = 0; OPJ_UINT32 len = 0, passno; OPJ_UINT32 l_nb_passes; /* cblk inclusion bits */ if (!cblk->numpasses) { opj_tgt_encode(bio, prc->incltree, cblkno, (OPJ_INT32)(layno + 1)); } else { opj_bio_putbit(bio, layer->numpasses != 0); } /* if cblk not included, go to the next cblk */ if (!layer->numpasses) { ++cblk; continue; } /* if first instance of cblk --> zero bit-planes information */ if (!cblk->numpasses) { cblk->numlenbits = 3; opj_tgt_encode(bio, prc->imsbtree, cblkno, 999); } /* number of coding passes included */ opj_t2_putnumpasses(bio, layer->numpasses); l_nb_passes = cblk->numpasses + layer->numpasses; pass = cblk->passes + cblk->numpasses; /* computation of the increase of the length indicator and insertion in the header */ for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) { ++nump; len += pass->len; if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) { increment = (OPJ_UINT32)opj_int_max((OPJ_INT32)increment, opj_int_floorlog2((OPJ_INT32)len) + 1 - ((OPJ_INT32)cblk->numlenbits + opj_int_floorlog2((OPJ_INT32)nump))); len = 0; nump = 0; } ++pass; } opj_t2_putcommacode(bio, (OPJ_INT32)increment); /* computation of the new Length indicator */ cblk->numlenbits += increment; pass = cblk->passes + cblk->numpasses; /* insertion of the codeword segment length */ for (passno = cblk->numpasses; passno < l_nb_passes; ++passno) { nump++; len += pass->len; if (pass->term || passno == (cblk->numpasses + layer->numpasses) - 1) { opj_bio_write(bio, (OPJ_UINT32)len, cblk->numlenbits + (OPJ_UINT32)opj_int_floorlog2((OPJ_INT32)nump)); len = 0; nump = 0; } ++pass; } ++cblk; } } if (!opj_bio_flush(bio)) { opj_bio_destroy(bio); return OPJ_FALSE; /* modified to eliminate longjmp !! */ } l_nb_bytes = (OPJ_UINT32)opj_bio_numbytes(bio); c += l_nb_bytes; length -= l_nb_bytes; opj_bio_destroy(bio); /* */ if (tcp->csty & J2K_CP_CSTY_EPH) { if (length < 2) { if (p_t2_mode == FINAL_PASS) { opj_event_msg(p_manager, EVT_ERROR, "opj_t2_encode_packet(): only %u bytes remaining in " "output buffer. %u needed.\n", length, 2); } return OPJ_FALSE; } c[0] = 255; c[1] = 146; c += 2; length -= 2; } /* */ /* << INDEX */ /* End of packet header position. Currently only represents the distance to start of packet Will be updated later by incrementing with packet start value*/ if (cstr_info && cstr_info->index_write) { opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno]; info_PK->end_ph_pos = (OPJ_INT32)(c - dest); } /* INDEX >> */ /* Writing the packet body */ band = res->bands; for (bandno = 0; !packet_empty && bandno < res->numbands; bandno++, ++band) { opj_tcd_precinct_t *prc; /* Skip empty bands */ if (opj_tcd_is_band_empty(band)) { continue; } prc = &band->precincts[precno]; l_nb_blocks = prc->cw * prc->ch; cblk = prc->cblks.enc; for (cblkno = 0; cblkno < l_nb_blocks; ++cblkno) { opj_tcd_layer_t *layer = &cblk->layers[layno]; if (!layer->numpasses) { ++cblk; continue; } if (layer->len > length) { if (p_t2_mode == FINAL_PASS) { opj_event_msg(p_manager, EVT_ERROR, "opj_t2_encode_packet(): only %u bytes remaining in " "output buffer. %u needed.\n", length, layer->len); } return OPJ_FALSE; } if (p_t2_mode == FINAL_PASS) { memcpy(c, layer->data, layer->len); } cblk->numpasses += layer->numpasses; c += layer->len; length -= layer->len; /* << INDEX */ if (cstr_info && cstr_info->index_write) { opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->packno]; info_PK->disto += layer->disto; if (cstr_info->D_max < info_PK->disto) { cstr_info->D_max = info_PK->disto; } } ++cblk; /* INDEX >> */ } } assert(c >= dest); * p_data_written += (OPJ_UINT32)(c - dest); return OPJ_TRUE; } static OPJ_BOOL opj_t2_skip_packet(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_tcp_t *p_tcp, opj_pi_iterator_t *p_pi, OPJ_BYTE *p_src, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *p_pack_info, opj_event_mgr_t *p_manager) { OPJ_BOOL l_read_data; OPJ_UINT32 l_nb_bytes_read = 0; OPJ_UINT32 l_nb_total_bytes_read = 0; *p_data_read = 0; if (! opj_t2_read_packet_header(p_t2, p_tile, p_tcp, p_pi, &l_read_data, p_src, &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) { return OPJ_FALSE; } p_src += l_nb_bytes_read; l_nb_total_bytes_read += l_nb_bytes_read; p_max_length -= l_nb_bytes_read; /* we should read data for the packet */ if (l_read_data) { l_nb_bytes_read = 0; if (! opj_t2_skip_packet_data(p_t2, p_tile, p_pi, &l_nb_bytes_read, p_max_length, p_pack_info, p_manager)) { return OPJ_FALSE; } l_nb_total_bytes_read += l_nb_bytes_read; } *p_data_read = l_nb_total_bytes_read; return OPJ_TRUE; } static OPJ_BOOL opj_t2_read_packet_header(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_tcp_t *p_tcp, opj_pi_iterator_t *p_pi, OPJ_BOOL * p_is_data_present, OPJ_BYTE *p_src_data, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *p_pack_info, opj_event_mgr_t *p_manager) { /* loop */ OPJ_UINT32 bandno, cblkno; OPJ_UINT32 l_nb_code_blocks; OPJ_UINT32 l_remaining_length; OPJ_UINT32 l_header_length; OPJ_UINT32 * l_modified_length_ptr = 00; OPJ_BYTE *l_current_data = p_src_data; opj_cp_t *l_cp = p_t2->cp; opj_bio_t *l_bio = 00; /* BIO component */ opj_tcd_band_t *l_band = 00; opj_tcd_cblk_dec_t* l_cblk = 00; opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno]; OPJ_BYTE *l_header_data = 00; OPJ_BYTE **l_header_data_start = 00; OPJ_UINT32 l_present; if (p_pi->layno == 0) { l_band = l_res->bands; /* reset tagtrees */ for (bandno = 0; bandno < l_res->numbands; ++bandno) { if (!opj_tcd_is_band_empty(l_band)) { opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno]; if (!(p_pi->precno < (l_band->precincts_data_size / sizeof( opj_tcd_precinct_t)))) { opj_event_msg(p_manager, EVT_ERROR, "Invalid precinct\n"); return OPJ_FALSE; } opj_tgt_reset(l_prc->incltree); opj_tgt_reset(l_prc->imsbtree); l_cblk = l_prc->cblks.dec; l_nb_code_blocks = l_prc->cw * l_prc->ch; for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) { l_cblk->numsegs = 0; l_cblk->real_num_segs = 0; ++l_cblk; } } ++l_band; } } /* SOP markers */ if (p_tcp->csty & J2K_CP_CSTY_SOP) { if (p_max_length < 6) { opj_event_msg(p_manager, EVT_WARNING, "Not enough space for expected SOP marker\n"); } else if ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) { opj_event_msg(p_manager, EVT_WARNING, "Expected SOP marker\n"); } else { l_current_data += 6; } /** TODO : check the Nsop value */ } /* When the marker PPT/PPM is used the packet header are store in PPT/PPM marker This part deal with this characteristic step 1: Read packet header in the saved structure step 2: Return to codestream for decoding */ l_bio = opj_bio_create(); if (! l_bio) { return OPJ_FALSE; } if (l_cp->ppm == 1) { /* PPM */ l_header_data_start = &l_cp->ppm_data; l_header_data = *l_header_data_start; l_modified_length_ptr = &(l_cp->ppm_len); } else if (p_tcp->ppt == 1) { /* PPT */ l_header_data_start = &(p_tcp->ppt_data); l_header_data = *l_header_data_start; l_modified_length_ptr = &(p_tcp->ppt_len); } else { /* Normal Case */ l_header_data_start = &(l_current_data); l_header_data = *l_header_data_start; l_remaining_length = (OPJ_UINT32)(p_src_data + p_max_length - l_header_data); l_modified_length_ptr = &(l_remaining_length); } opj_bio_init_dec(l_bio, l_header_data, *l_modified_length_ptr); l_present = opj_bio_read(l_bio, 1); JAS_FPRINTF(stderr, "present=%d \n", l_present); if (!l_present) { /* TODO MSD: no test to control the output of this function*/ opj_bio_inalign(l_bio); l_header_data += opj_bio_numbytes(l_bio); opj_bio_destroy(l_bio); /* EPH markers */ if (p_tcp->csty & J2K_CP_CSTY_EPH) { if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) { opj_event_msg(p_manager, EVT_WARNING, "Not enough space for expected EPH marker\n"); } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) { opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n"); } else { l_header_data += 2; } } l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start); *l_modified_length_ptr -= l_header_length; *l_header_data_start += l_header_length; /* << INDEX */ /* End of packet header position. Currently only represents the distance to start of packet Will be updated later by incrementing with packet start value */ if (p_pack_info) { p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data); } /* INDEX >> */ * p_is_data_present = OPJ_FALSE; *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data); return OPJ_TRUE; } l_band = l_res->bands; for (bandno = 0; bandno < l_res->numbands; ++bandno, ++l_band) { opj_tcd_precinct_t *l_prc = &(l_band->precincts[p_pi->precno]); if (opj_tcd_is_band_empty(l_band)) { continue; } l_nb_code_blocks = l_prc->cw * l_prc->ch; l_cblk = l_prc->cblks.dec; for (cblkno = 0; cblkno < l_nb_code_blocks; cblkno++) { OPJ_UINT32 l_included, l_increment, l_segno; OPJ_INT32 n; /* if cblk not yet included before --> inclusion tagtree */ if (!l_cblk->numsegs) { l_included = opj_tgt_decode(l_bio, l_prc->incltree, cblkno, (OPJ_INT32)(p_pi->layno + 1)); /* else one bit */ } else { l_included = opj_bio_read(l_bio, 1); } /* if cblk not included */ if (!l_included) { l_cblk->numnewpasses = 0; ++l_cblk; JAS_FPRINTF(stderr, "included=%d \n", l_included); continue; } /* if cblk not yet included --> zero-bitplane tagtree */ if (!l_cblk->numsegs) { OPJ_UINT32 i = 0; while (!opj_tgt_decode(l_bio, l_prc->imsbtree, cblkno, (OPJ_INT32)i)) { ++i; } l_cblk->Mb = (OPJ_UINT32)l_band->numbps; if ((OPJ_UINT32)l_band->numbps + 1 < i) { /* Not totally sure what we should do in that situation, * but that avoids the integer overflow of * https://github.com/uclouvain/openjpeg/pull/1488 * while keeping the regression test suite happy. */ l_cblk->numbps = (OPJ_UINT32)(l_band->numbps + 1 - (int)i); } else { l_cblk->numbps = (OPJ_UINT32)l_band->numbps + 1 - i; } l_cblk->numlenbits = 3; } /* number of coding passes */ l_cblk->numnewpasses = opj_t2_getnumpasses(l_bio); l_increment = opj_t2_getcommacode(l_bio); /* length indicator increment */ l_cblk->numlenbits += l_increment; l_segno = 0; if (!l_cblk->numsegs) { if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1)) { opj_bio_destroy(l_bio); return OPJ_FALSE; } } else { l_segno = l_cblk->numsegs - 1; if (l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses) { ++l_segno; if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) { opj_bio_destroy(l_bio); return OPJ_FALSE; } } } n = (OPJ_INT32)l_cblk->numnewpasses; if ((p_tcp->tccps[p_pi->compno].cblksty & J2K_CCP_CBLKSTY_HT) != 0) do { OPJ_UINT32 bit_number; l_cblk->segs[l_segno].numnewpasses = l_segno == 0 ? 1 : (OPJ_UINT32)n; bit_number = l_cblk->numlenbits + opj_uint_floorlog2( l_cblk->segs[l_segno].numnewpasses); if (bit_number > 32) { opj_event_msg(p_manager, EVT_ERROR, "Invalid bit number %d in opj_t2_read_packet_header()\n", bit_number); opj_bio_destroy(l_bio); return OPJ_FALSE; } l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number); JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n", l_included, l_cblk->segs[l_segno].numnewpasses, l_increment, l_cblk->segs[l_segno].newlen); n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses; if (n > 0) { ++l_segno; if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) { opj_bio_destroy(l_bio); return OPJ_FALSE; } } } while (n > 0); else do { OPJ_UINT32 bit_number; l_cblk->segs[l_segno].numnewpasses = (OPJ_UINT32)opj_int_min((OPJ_INT32)( l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses), n); bit_number = l_cblk->numlenbits + opj_uint_floorlog2( l_cblk->segs[l_segno].numnewpasses); if (bit_number > 32) { opj_event_msg(p_manager, EVT_ERROR, "Invalid bit number %d in opj_t2_read_packet_header()\n", bit_number); opj_bio_destroy(l_bio); return OPJ_FALSE; } l_cblk->segs[l_segno].newlen = opj_bio_read(l_bio, bit_number); JAS_FPRINTF(stderr, "included=%d numnewpasses=%d increment=%d len=%d \n", l_included, l_cblk->segs[l_segno].numnewpasses, l_increment, l_cblk->segs[l_segno].newlen); n -= (OPJ_INT32)l_cblk->segs[l_segno].numnewpasses; if (n > 0) { ++l_segno; if (! opj_t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0)) { opj_bio_destroy(l_bio); return OPJ_FALSE; } } } while (n > 0); ++l_cblk; } } if (!opj_bio_inalign(l_bio)) { opj_bio_destroy(l_bio); return OPJ_FALSE; } l_header_data += opj_bio_numbytes(l_bio); opj_bio_destroy(l_bio); /* EPH markers */ if (p_tcp->csty & J2K_CP_CSTY_EPH) { if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - *l_header_data_start)) < 2U) { opj_event_msg(p_manager, EVT_WARNING, "Not enough space for expected EPH marker\n"); } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) { opj_event_msg(p_manager, EVT_WARNING, "Expected EPH marker\n"); } else { l_header_data += 2; } } l_header_length = (OPJ_UINT32)(l_header_data - *l_header_data_start); JAS_FPRINTF(stderr, "hdrlen=%d \n", l_header_length); JAS_FPRINTF(stderr, "packet body\n"); *l_modified_length_ptr -= l_header_length; *l_header_data_start += l_header_length; /* << INDEX */ /* End of packet header position. Currently only represents the distance to start of packet Will be updated later by incrementing with packet start value */ if (p_pack_info) { p_pack_info->end_ph_pos = (OPJ_INT32)(l_current_data - p_src_data); } /* INDEX >> */ *p_is_data_present = OPJ_TRUE; *p_data_read = (OPJ_UINT32)(l_current_data - p_src_data); return OPJ_TRUE; } static OPJ_BOOL opj_t2_read_packet_data(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_pi_iterator_t *p_pi, OPJ_BYTE *p_src_data, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *pack_info, opj_event_mgr_t* p_manager) { OPJ_UINT32 bandno, cblkno; OPJ_UINT32 l_nb_code_blocks; OPJ_BYTE *l_current_data = p_src_data; opj_tcd_band_t *l_band = 00; opj_tcd_cblk_dec_t* l_cblk = 00; opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno]; OPJ_BOOL partial_buffer = OPJ_FALSE; OPJ_ARG_NOT_USED(p_t2); OPJ_ARG_NOT_USED(pack_info); l_band = l_res->bands; for (bandno = 0; bandno < l_res->numbands; ++bandno) { opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno]; if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) { ++l_band; continue; } l_nb_code_blocks = l_prc->cw * l_prc->ch; l_cblk = l_prc->cblks.dec; for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) { opj_tcd_seg_t *l_seg = 00; // if we have a partial data stream, set numchunks to zero // since we have no data to actually decode. if (partial_buffer) { l_cblk->numchunks = 0; } if (!l_cblk->numnewpasses) { /* nothing to do */ ++l_cblk; continue; } if (!l_cblk->numsegs) { l_seg = l_cblk->segs; ++l_cblk->numsegs; } else { l_seg = &l_cblk->segs[l_cblk->numsegs - 1]; if (l_seg->numpasses == l_seg->maxpasses) { ++l_seg; ++l_cblk->numsegs; } } do { /* Check possible overflow (on l_current_data only, assumes input args already checked) then size */ if ((((OPJ_SIZE_T)l_current_data + (OPJ_SIZE_T)l_seg->newlen) < (OPJ_SIZE_T)l_current_data) || (l_current_data + l_seg->newlen > p_src_data + p_max_length) || (partial_buffer)) { if (p_t2->cp->strict) { opj_event_msg(p_manager, EVT_ERROR, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n", l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno); return OPJ_FALSE; } else { opj_event_msg(p_manager, EVT_WARNING, "read: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n", l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno); // skip this codeblock since it is a partial read partial_buffer = OPJ_TRUE; l_cblk->numchunks = 0; l_seg->numpasses += l_seg->numnewpasses; l_cblk->numnewpasses -= l_seg->numnewpasses; if (l_cblk->numnewpasses > 0) { ++l_seg; ++l_cblk->numsegs; break; } continue; } } #ifdef USE_JPWL /* we need here a j2k handle to verify if making a check to the validity of cblocks parameters is selected from user (-W) */ /* let's check that we are not exceeding */ if ((l_cblk->len + l_seg->newlen) > 8192) { opj_event_msg(p_manager, EVT_WARNING, "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n", l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno); if (!JPWL_ASSUME) { opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n"); return OPJ_FALSE; } l_seg->newlen = 8192 - l_cblk->len; opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen); break; }; #endif /* USE_JPWL */ if (l_cblk->numchunks == l_cblk->numchunksalloc) { OPJ_UINT32 l_numchunksalloc = l_cblk->numchunksalloc * 2 + 1; opj_tcd_seg_data_chunk_t* l_chunks = (opj_tcd_seg_data_chunk_t*)opj_realloc(l_cblk->chunks, l_numchunksalloc * sizeof(opj_tcd_seg_data_chunk_t)); if (l_chunks == NULL) { opj_event_msg(p_manager, EVT_ERROR, "cannot allocate opj_tcd_seg_data_chunk_t* array"); return OPJ_FALSE; } l_cblk->chunks = l_chunks; l_cblk->numchunksalloc = l_numchunksalloc; } l_cblk->chunks[l_cblk->numchunks].data = l_current_data; l_cblk->chunks[l_cblk->numchunks].len = l_seg->newlen; l_cblk->numchunks ++; l_current_data += l_seg->newlen; l_seg->len += l_seg->newlen; l_seg->numpasses += l_seg->numnewpasses; l_cblk->numnewpasses -= l_seg->numnewpasses; l_seg->real_num_passes = l_seg->numpasses; if (l_cblk->numnewpasses > 0) { ++l_seg; ++l_cblk->numsegs; } } while (l_cblk->numnewpasses > 0); l_cblk->real_num_segs = l_cblk->numsegs; ++l_cblk; } /* next code_block */ ++l_band; } // return the number of bytes read if (partial_buffer) { *(p_data_read) = p_max_length; } else { *(p_data_read) = (OPJ_UINT32)(l_current_data - p_src_data); } return OPJ_TRUE; } static OPJ_BOOL opj_t2_skip_packet_data(opj_t2_t* p_t2, opj_tcd_tile_t *p_tile, opj_pi_iterator_t *p_pi, OPJ_UINT32 * p_data_read, OPJ_UINT32 p_max_length, opj_packet_info_t *pack_info, opj_event_mgr_t *p_manager) { OPJ_UINT32 bandno, cblkno; OPJ_UINT32 l_nb_code_blocks; opj_tcd_band_t *l_band = 00; opj_tcd_cblk_dec_t* l_cblk = 00; opj_tcd_resolution_t* l_res = &p_tile->comps[p_pi->compno].resolutions[p_pi->resno]; OPJ_ARG_NOT_USED(p_t2); OPJ_ARG_NOT_USED(pack_info); *p_data_read = 0; l_band = l_res->bands; for (bandno = 0; bandno < l_res->numbands; ++bandno) { opj_tcd_precinct_t *l_prc = &l_band->precincts[p_pi->precno]; if ((l_band->x1 - l_band->x0 == 0) || (l_band->y1 - l_band->y0 == 0)) { ++l_band; continue; } l_nb_code_blocks = l_prc->cw * l_prc->ch; l_cblk = l_prc->cblks.dec; for (cblkno = 0; cblkno < l_nb_code_blocks; ++cblkno) { opj_tcd_seg_t *l_seg = 00; if (!l_cblk->numnewpasses) { /* nothing to do */ ++l_cblk; continue; } if (!l_cblk->numsegs) { l_seg = l_cblk->segs; ++l_cblk->numsegs; } else { l_seg = &l_cblk->segs[l_cblk->numsegs - 1]; if (l_seg->numpasses == l_seg->maxpasses) { ++l_seg; ++l_cblk->numsegs; } } do { /* Check possible overflow then size */ if (((*p_data_read + l_seg->newlen) < (*p_data_read)) || ((*p_data_read + l_seg->newlen) > p_max_length)) { if (p_t2->cp->strict) { opj_event_msg(p_manager, EVT_ERROR, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n", l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno); return OPJ_FALSE; } else { opj_event_msg(p_manager, EVT_WARNING, "skip: segment too long (%d) with max (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n", l_seg->newlen, p_max_length, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno); return OPJ_TRUE; } } #ifdef USE_JPWL /* we need here a j2k handle to verify if making a check to the validity of cblocks parameters is selected from user (-W) */ /* let's check that we are not exceeding */ if ((l_cblk->len + l_seg->newlen) > 8192) { opj_event_msg(p_manager, EVT_WARNING, "JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n", l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno); if (!JPWL_ASSUME) { opj_event_msg(p_manager, EVT_ERROR, "JPWL: giving up\n"); return -999; } l_seg->newlen = 8192 - l_cblk->len; opj_event_msg(p_manager, EVT_WARNING, " - truncating segment to %d\n", l_seg->newlen); break; }; #endif /* USE_JPWL */ JAS_FPRINTF(stderr, "p_data_read (%d) newlen (%d) \n", *p_data_read, l_seg->newlen); *(p_data_read) += l_seg->newlen; l_seg->numpasses += l_seg->numnewpasses; l_cblk->numnewpasses -= l_seg->numnewpasses; if (l_cblk->numnewpasses > 0) { ++l_seg; ++l_cblk->numsegs; } } while (l_cblk->numnewpasses > 0); ++l_cblk; } ++l_band; } return OPJ_TRUE; } static OPJ_BOOL opj_t2_init_seg(opj_tcd_cblk_dec_t* cblk, OPJ_UINT32 index, OPJ_UINT32 cblksty, OPJ_UINT32 first) { opj_tcd_seg_t* seg = 00; OPJ_UINT32 l_nb_segs = index + 1; if (l_nb_segs > cblk->m_current_max_segs) { opj_tcd_seg_t* new_segs; OPJ_UINT32 l_m_current_max_segs = cblk->m_current_max_segs + OPJ_J2K_DEFAULT_NB_SEGS; new_segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, l_m_current_max_segs * sizeof(opj_tcd_seg_t)); if (! new_segs) { /* opj_event_msg(p_manager, EVT_ERROR, "Not enough memory to initialize segment %d\n", l_nb_segs); */ return OPJ_FALSE; } cblk->segs = new_segs; memset(new_segs + cblk->m_current_max_segs, 0, OPJ_J2K_DEFAULT_NB_SEGS * sizeof(opj_tcd_seg_t)); cblk->m_current_max_segs = l_m_current_max_segs; } seg = &cblk->segs[index]; opj_tcd_reinit_segment(seg); if (cblksty & J2K_CCP_CBLKSTY_TERMALL) { seg->maxpasses = 1; } else if (cblksty & J2K_CCP_CBLKSTY_LAZY) { if (first) { seg->maxpasses = 10; } else { seg->maxpasses = (((seg - 1)->maxpasses == 1) || ((seg - 1)->maxpasses == 10)) ? 2 : 1; } } else { /* See paragraph "B.10.6 Number of coding passes" of the standard. * Probably that 109 must be interpreted a (Mb-1)*3 + 1 with Mb=37, * Mb being the maximum number of bit-planes available for the * representation of coefficients in the sub-band */ seg->maxpasses = 109; } return OPJ_TRUE; }