Mercurial > hgrepos > Python2 > PyMuPDF
diff mupdf-source/thirdparty/openjpeg/src/lib/openjp2/t2.c @ 2:b50eed0cc0ef upstream
ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4.
The directory name has changed: no version number in the expanded directory now.
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Mon, 15 Sep 2025 11:43:07 +0200 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mupdf-source/thirdparty/openjpeg/src/lib/openjp2/t2.c Mon Sep 15 11:43:07 2025 +0200 @@ -0,0 +1,1705 @@ +/* + * 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 <support@intopix.com> + * 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 + + /* <SOP 0xff91> */ + 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; + } + /* </SOP> */ + + 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); + + /* <EPH 0xff92> */ + 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; + } + /* </EPH> */ + + /* << 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) { + /* SOP markers are allowed (i.e. optional), just warn */ + 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) { + /* EPH markers are required */ + if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - + *l_header_data_start)) < 2U) { + opj_event_msg(p_manager, EVT_ERROR, + "Not enough space for required EPH marker\n"); + return OPJ_FALSE; + } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) { + opj_event_msg(p_manager, EVT_ERROR, "Expected EPH marker\n"); + return OPJ_FALSE; + } 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) { + /* EPH markers are required */ + if ((*l_modified_length_ptr - (OPJ_UINT32)(l_header_data - + *l_header_data_start)) < 2U) { + opj_event_msg(p_manager, EVT_ERROR, + "Not enough space for required EPH marker\n"); + return OPJ_FALSE; + } else if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) { + opj_event_msg(p_manager, EVT_ERROR, "Expected EPH marker\n"); + return OPJ_FALSE; + } 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); + if (!l_header_length) { + return OPJ_FALSE; + } + 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, ++l_cblk) { + opj_tcd_seg_t *l_seg = 00; + + if (!l_cblk->numnewpasses) { + /* nothing to do */ + continue; + } + + if (partial_buffer || l_cblk->corrupted) { + /* if a previous segment in this packet couldn't be decoded, + * or if this code block was corrupted in a previous layer, + * then mark it as corrupted. + */ + l_cblk->numchunks = 0; + l_cblk->corrupted = OPJ_TRUE; + 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 (and following ones in this + * packet) since it is a partial read + */ + partial_buffer = OPJ_TRUE; + l_cblk->corrupted = OPJ_TRUE; + l_cblk->numchunks = 0; + break; + } + } + +#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; + + } /* 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); + + *p_data_read = p_max_length; + 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; +}