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t2.c
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/*
* 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_write(bio, 1, 1);
}
opj_bio_write(bio, 0, 1);
}
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_write(bio, 0, 1);
} 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_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);
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;
}
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;
/* 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);
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 */
OPJ_BOOL packet_empty = OPJ_TRUE;
/* <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;
}
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);
/* 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;
}
}
opj_bio_write(bio, packet_empty ? 0 : 1, 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;
}
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_write(bio, layer->numpasses != 0, 1);
}
/* 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;
}
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,