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openjpeg/libopenjpeg/t2.c

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/*
* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2007, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
* Copyright (c) 2002-2003, Yannick Verschueren
* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
* Copyright (c) 2005, Herve Drolon, FreeImage Team
* Copyright (c) 2008, Jerome Fimes, Communications & Systemes <jerome.fimes@c-s.fr>
* 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 "openjpeg.h"
#include "opj_includes.h"
#include "t2.h"
#include "bio.h"
#include "tcd.h"
#include "pi.h"
#include "event.h"
#include "j2k.h"
#include "tgt.h"
#include "int.h"
#include "opj_malloc.h"
#include "pi.h"
/** @defgroup T2 T2 - Implementation of a tier-2 coding */
/*@{*/
/** @name Local static functions */
/*@{*/
static void t2_putcommacode(opj_bio_t *bio, OPJ_UINT32 n);
static OPJ_UINT32 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 t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n);
static OPJ_UINT32 t2_getnumpasses(opj_bio_t *bio);
/**
Encode a packet of a tile to a destination buffer
@param tile Tile for which to write the packets
@param tcp Tile coding parameters
@param pi Packet identity
@param dest Destination buffer
@param len Length of the destination buffer
@param cstr_info Codestream information structure
@param tileno Number of the tile encoded
@return
*/
static bool 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);
/**
@param seg
@param cblksty
@param first
*/
static bool t2_init_seg(opj_tcd_cblk_dec_t* cblk, OPJ_UINT32 index, OPJ_UINT32 cblksty, OPJ_UINT32 first);
/**
Decode a packet of a tile from a source buffer
@param t2 T2 handle
@param src Source buffer
@param len Length of the source buffer
@param tile Tile for which to write the packets
@param tcp Tile coding parameters
@param pi Packet identity
@return
*/
static bool 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);
/*@}*/
/*@}*/
/* ----------------------------------------------------------------------- */
/* #define RESTART 0x04 */
static void t2_putcommacode(opj_bio_t *bio, OPJ_UINT32 n) {
while
(--n != -1)
{
bio_write(bio, 1, 1);
}
bio_write(bio, 0, 1);
}
static OPJ_UINT32 t2_getcommacode(opj_bio_t *bio) {
OPJ_UINT32 n = 0;
while
(bio_read(bio, 1))
{
++n;
}
return n;
}
static void t2_putnumpasses(opj_bio_t *bio, OPJ_UINT32 n) {
if (n == 1) {
bio_write(bio, 0, 1);
} else if (n == 2) {
bio_write(bio, 2, 2);
} else if (n <= 5) {
bio_write(bio, 0xc | (n - 3), 4);
} else if (n <= 36) {
bio_write(bio, 0x1e0 | (n - 6), 9);
} else if (n <= 164) {
bio_write(bio, 0xff80 | (n - 37), 16);
}
}
static OPJ_UINT32 t2_getnumpasses(opj_bio_t *bio) {
OPJ_UINT32 n;
if (!bio_read(bio, 1))
return 1;
if (!bio_read(bio, 1))
return 2;
if ((n = bio_read(bio, 2)) != 3)
return (3 + n);
if ((n = bio_read(bio, 5)) != 31)
return (6 + n);
return (37 + bio_read(bio, 7));
}
static bool 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)
{
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 */
/* <SOP 0xff91> */
if (tcp->csty & J2K_CP_CSTY_SOP) {
c[0] = 255;
c[1] = 145;
c[2] = 0;
c[3] = 4;
c[4] = (tile->packno % 65536) / 256;
c[5] = (tile->packno % 65536) % 256;
c += 6;
length -= 6;
}
/* </SOP> */
if (!layno) {
band = res->bands;
for
(bandno = 0; bandno < res->numbands; ++bandno)
{
opj_tcd_precinct_t *prc = &band->precincts[precno];
tgt_reset(prc->incltree);
tgt_reset(prc->imsbtree);
l_nb_blocks = prc->cw * prc->ch;
for
(cblkno = 0; cblkno < l_nb_blocks; ++cblkno)
{
opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
cblk->numpasses = 0;
tgt_setvalue(prc->imsbtree, cblkno, band->numbps - cblk->numbps);
}
++band;
}
}
bio = bio_create();
bio_init_enc(bio, c, length);
bio_write(bio, 1, 1); /* Empty header bit */
/* Writing Packet header */
band = res->bands;
for
(bandno = 0; bandno < res->numbands; ++bandno)
{
opj_tcd_precinct_t *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)
{
tgt_setvalue(prc->incltree, cblkno, 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) {
tgt_encode(bio, prc->incltree, cblkno, layno + 1);
} else {
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;
tgt_encode(bio, prc->imsbtree, cblkno, 999);
}
/* number of coding passes included */
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 = int_max(increment, int_floorlog2(len) + 1 - (cblk->numlenbits + int_floorlog2(nump)));
len = 0;
nump = 0;
}
++pass;
}
t2_putcommacode(bio, 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)
{
bio_write(bio, len, cblk->numlenbits + int_floorlog2(nump));
len = 0;
nump = 0;
}
++pass;
}
++cblk;
}
++band;
}
if
(bio_flush(bio))
{
bio_destroy(bio);
return false; /* modified to eliminate longjmp !! */
}
l_nb_bytes = bio_numbytes(bio);
c += l_nb_bytes;
length -= l_nb_bytes;
bio_destroy(bio);
/* <EPH 0xff92> */
if (tcp->csty & J2K_CP_CSTY_EPH) {
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; bandno < res->numbands; bandno++)
{
opj_tcd_precinct_t *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)
{
return 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 >> */
}
++band;
}
* p_data_written += (c - dest);
return true;
}
static bool 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)
{
cblk->m_current_max_segs += J2K_DEFAULT_NB_SEGS;
cblk->segs = (opj_tcd_seg_t*) opj_realloc(cblk->segs, cblk->m_current_max_segs * sizeof(opj_tcd_seg_t));
if
(! cblk->segs)
{
return false;
}
}
seg = &cblk->segs[index];
memset(seg,0,sizeof(opj_tcd_seg_t));
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 {
seg->maxpasses = 109;
}
return true;
}
static bool 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,
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)
{
/* 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)
{
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)))
{
tgt_reset(l_prc->incltree);
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 ((*l_current_data) != 0xff || (*(l_current_data + 1) != 0x91)) {
// TODO opj_event_msg(t2->cinfo->event_mgr, 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 caracteristic
step 1: Read packet header in the saved structure
step 2: Return to codestream for decoding
*/
l_bio = bio_create();
if
(! l_bio)
{
return 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 = p_src_data+p_max_length-l_header_data;
l_modified_length_ptr = &(l_remaining_length);
}
bio_init_dec(l_bio, l_header_data,*l_modified_length_ptr);
l_present = bio_read(l_bio, 1);
if
(!l_present)
{
bio_inalign(l_bio);
l_header_data += bio_numbytes(l_bio);
bio_destroy(l_bio);
/* EPH markers */
if (p_tcp->csty & J2K_CP_CSTY_EPH) {
if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
printf("Error : expected EPH marker\n");
} else {
l_header_data += 2;
}
}
l_header_length = (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 = false;
*p_data_read = l_current_data - p_src_data;
return true;
}
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_UINT32 l_included,l_increment, l_segno;
OPJ_INT32 n;
/* if cblk not yet included before --> inclusion tagtree */
if
(!l_cblk->numsegs)
{
l_included = tgt_decode(l_bio, l_prc->incltree, cblkno, p_pi->layno + 1);
/* else one bit */
}
else
{
l_included = bio_read(l_bio, 1);
}
/* if cblk not included */
if
(!l_included)
{
l_cblk->numnewpasses = 0;
++l_cblk;
continue;
}
/* if cblk not yet included --> zero-bitplane tagtree */
if
(!l_cblk->numsegs)
{
OPJ_UINT32 i = 0;
while
(!tgt_decode(l_bio, l_prc->imsbtree, cblkno, i))
{
++i;
}
l_cblk->numbps = l_band->numbps + 1 - i;
l_cblk->numlenbits = 3;
}
/* number of coding passes */
l_cblk->numnewpasses = t2_getnumpasses(l_bio);
l_increment = t2_getcommacode(l_bio);
/* length indicator increment */
l_cblk->numlenbits += l_increment;
l_segno = 0;
if
(!l_cblk->numsegs)
{
if
(! t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 1))
{
bio_destroy(l_bio);
return false;
}
}
else
{
l_segno = l_cblk->numsegs - 1;
if
(l_cblk->segs[l_segno].numpasses == l_cblk->segs[l_segno].maxpasses)
{
++l_segno;
if
(! t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0))
{
bio_destroy(l_bio);
return false;
}
}
}
n = l_cblk->numnewpasses;
do {
l_cblk->segs[l_segno].numnewpasses = int_min(l_cblk->segs[l_segno].maxpasses - l_cblk->segs[l_segno].numpasses, n);
l_cblk->segs[l_segno].newlen = bio_read(l_bio, l_cblk->numlenbits + uint_floorlog2(l_cblk->segs[l_segno].numnewpasses));
n -= l_cblk->segs[l_segno].numnewpasses;
if
(n > 0)
{
++l_segno;
if
(! t2_init_seg(l_cblk, l_segno, p_tcp->tccps[p_pi->compno].cblksty, 0))
{
bio_destroy(l_bio);
return false;
}
}
}
while (n > 0);
++l_cblk;
}
++l_band;
}
if
(bio_inalign(l_bio))
{
bio_destroy(l_bio);
return false;
}
l_header_data += bio_numbytes(l_bio);
bio_destroy(l_bio);
/* EPH markers */
if (p_tcp->csty & J2K_CP_CSTY_EPH) {
if ((*l_header_data) != 0xff || (*(l_header_data + 1) != 0x92)) {
// TODO opj_event_msg(t2->cinfo->event_mgr, EVT_ERROR, "Expected EPH marker\n");
} else {
l_header_data += 2;
}
}
l_header_length = (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 = true;
*p_data_read = l_current_data - p_src_data;
return true;
}
static bool 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_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];
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;
l_cblk->len = 0;
}
else
{
l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
if
(l_seg->numpasses == l_seg->maxpasses)
{
++l_seg;
++l_cblk->numsegs;
}
}
do
{
if
(l_current_data + l_seg->newlen > p_src_data + p_max_length)
{
return false;
}
#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 ((cblk->len + seg->newlen) > 8192) {
opj_event_msg(t2->cinfo, EVT_WARNING,
"JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
seg->newlen, cblkno, precno, bandno, resno, compno);
if (!JPWL_ASSUME) {
opj_event_msg(t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
return -999;
}
seg->newlen = 8192 - cblk->len;
opj_event_msg(t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", seg->newlen);
break;
};
#endif /* USE_JPWL */
memcpy(l_cblk->data + l_cblk->len, l_current_data, l_seg->newlen);
if
(l_seg->numpasses == 0)
{
l_seg->data = &l_cblk->data;
l_seg->dataindex = l_cblk->len;
}
l_current_data += l_seg->newlen;
l_seg->numpasses += l_seg->numnewpasses;
l_cblk->numnewpasses -= l_seg->numnewpasses;
l_seg->real_num_passes = l_seg->numpasses;
l_cblk->len += l_seg->newlen;
l_seg->len += l_seg->newlen;
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;
}
++l_band;
}
*(p_data_read) = l_current_data - p_src_data;
return true;
}
static bool 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_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];
*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;
l_cblk->len = 0;
}
else
{
l_seg = &l_cblk->segs[l_cblk->numsegs - 1];
if
(l_seg->numpasses == l_seg->maxpasses)
{
++l_seg;
++l_cblk->numsegs;
}
}
do
{
if
(* p_data_read + l_seg->newlen > p_max_length)
{
return false;
}
#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 ((cblk->len + seg->newlen) > 8192) {
opj_event_msg(t2->cinfo, EVT_WARNING,
"JPWL: segment too long (%d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
seg->newlen, cblkno, precno, bandno, resno, compno);
if (!JPWL_ASSUME) {
opj_event_msg(t2->cinfo, EVT_ERROR, "JPWL: giving up\n");
return -999;
}
seg->newlen = 8192 - cblk->len;
opj_event_msg(t2->cinfo, EVT_WARNING, " - truncating segment to %d\n", seg->newlen);
break;
};
#endif /* USE_JPWL */
*(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 true;
}
static bool 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)
{
bool l_read_data;
OPJ_UINT32 l_nb_bytes_read = 0;
OPJ_UINT32 l_nb_total_bytes_read = 0;
*p_data_read = 0;
if
(! 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))
{
return 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
(! t2_read_packet_data(p_t2,p_tile,p_pi,p_src,&l_nb_bytes_read,p_max_length,p_pack_info))
{
return false;
}
l_nb_total_bytes_read += l_nb_bytes_read;
}
*p_data_read = l_nb_total_bytes_read;
return true;
}
static bool 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)
{
bool l_read_data;
OPJ_UINT32 l_nb_bytes_read = 0;
OPJ_UINT32 l_nb_total_bytes_read = 0;
*p_data_read = 0;
if
(! 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))
{
return 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
(! t2_skip_packet_data(p_t2,p_tile,p_pi,&l_nb_bytes_read,p_max_length,p_pack_info))
{
return false;
}
l_nb_total_bytes_read += l_nb_bytes_read;
}
*p_data_read = l_nb_total_bytes_read;
return true;
}
/* ----------------------------------------------------------------------- */
bool 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_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->m_specific_param.m_enc.m_cinema == CINEMA4K_24? 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 = pi_initialise_encode(l_image, l_cp, p_tile_no, p_t2_mode);
if
(!l_pi)
{
return 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;
pi_create_encode(l_pi, l_cp,p_tile_no,poc,l_tp_num,p_tp_pos,p_t2_mode);
while
(pi_next(l_current_pi))
{
if
(l_current_pi->layno < p_maxlayers)
{
l_nb_bytes = 0;
if
(! t2_encode_packet(p_tile_no,p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info))
{
pi_destroy(l_pi, l_nb_pocs);
return 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)
{
pi_destroy(l_pi, l_nb_pocs);
return false;
}
}
++l_current_pi;
}
}
}
else
{ /* t2_mode == FINAL_PASS */
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];
while
(pi_next(l_current_pi))
{
if
(l_current_pi->layno < p_maxlayers)
{
l_nb_bytes=0;
if
(! t2_encode_packet(p_tile_no,p_tile, l_tcp, l_current_pi, l_current_data, &l_nb_bytes, p_max_len, cstr_info))
{
pi_destroy(l_pi, l_nb_pocs);
return 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;
}
}
}
pi_destroy(l_pi, l_nb_pocs);
return true;
}
bool t2_decode_packets(
opj_t2_t *p_t2,
OPJ_UINT32 p_tile_no,
struct opj_tcd_tile *p_tile,
OPJ_BYTE *p_src,
OPJ_UINT32 * p_data_read,
OPJ_UINT32 p_max_len,
struct opj_codestream_info *p_cstr_info)
{
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_cp_t *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;
OPJ_UINT32 curtp = 0;
OPJ_UINT32 tp_start_packno;
opj_packet_info_t *l_pack_info = 00;
opj_image_comp_t* l_img_comp = 00;
if
(p_cstr_info)
{
l_pack_info = p_cstr_info->tile[p_tile_no].packet;
}
/* create a packet iterator */
l_pi = pi_create_decode(l_image, l_cp, p_tile_no);
if
(!l_pi)
{
return false;
}
tp_start_packno = 0;
l_current_pi = l_pi;
for
(pino = 0; pino <= l_tcp->numpocs; ++pino)
{
while
(pi_next(l_current_pi))
{
if
(l_tcp->num_layers_to_decode > l_current_pi->layno && l_current_pi->resno < p_tile->comps[l_current_pi->compno].minimum_num_resolutions)
{
l_nb_bytes_read = 0;
if
(! 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))
{
pi_destroy(l_pi,l_nb_pocs);
return false;
}
l_img_comp = &(l_image->comps[l_current_pi->compno]);
l_img_comp->resno_decoded = uint_max(l_current_pi->resno, l_img_comp->resno_decoded);
}
else
{
l_nb_bytes_read = 0;
if
(! 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))
{
pi_destroy(l_pi,l_nb_pocs);
return false;
}
}
l_current_data += l_nb_bytes_read;
p_max_len -= l_nb_bytes_read;
/* INDEX >> */
if(p_cstr_info) {
opj_tile_info_t *info_TL = &p_cstr_info->tile[p_tile_no];
opj_packet_info_t *info_PK = &info_TL->packet[p_cstr_info->packno];
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 = (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;
}
/* << INDEX */
}
++l_current_pi;
}
/* INDEX >> */
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
}
/* << INDEX */
/* don't forget to release pi */
pi_destroy(l_pi,l_nb_pocs);
*p_data_read = l_current_data - p_src;
return 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* t2_create(
opj_image_t *p_image,
opj_cp_t *p_cp)
{
/* create the tcd structure */
opj_t2_t *l_t2 = (opj_t2_t*)opj_malloc(sizeof(opj_t2_t));
if
(!l_t2)
{
return 00;
}
memset(l_t2,0,sizeof(opj_t2_t));
l_t2->image = p_image;
l_t2->cp = p_cp;
return l_t2;
}
/**
* Destroys a Tier 2 handle.
*
* @param p_t2 the Tier 2 handle to destroy
*/
void t2_destroy(opj_t2_t *p_t2)
{
if
(p_t2)
{
opj_free(p_t2);
}
}
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