--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/openjpeg/src/lib/openjp2/pi.c	Mon Sep 15 11:44:09 2025 +0200
@@ -0,0 +1,2149 @@
+/*
+ * 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) 2006-2007, Parvatha Elangovan
+ * 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.
+ */
+
+#define OPJ_UINT32_SEMANTICALLY_BUT_INT32 OPJ_UINT32
+
+#include "opj_includes.h"
+
+/** @defgroup PI PI - Implementation of a packet iterator */
+/*@{*/
+
+/** @name Local static functions */
+/*@{*/
+
+/**
+Get next packet in layer-resolution-component-precinct order.
+@param pi packet iterator to modify
+@return returns false if pi pointed to the last packet or else returns true
+*/
+static OPJ_BOOL opj_pi_next_lrcp(opj_pi_iterator_t * pi);
+/**
+Get next packet in resolution-layer-component-precinct order.
+@param pi packet iterator to modify
+@return returns false if pi pointed to the last packet or else returns true
+*/
+static OPJ_BOOL opj_pi_next_rlcp(opj_pi_iterator_t * pi);
+/**
+Get next packet in resolution-precinct-component-layer order.
+@param pi packet iterator to modify
+@return returns false if pi pointed to the last packet or else returns true
+*/
+static OPJ_BOOL opj_pi_next_rpcl(opj_pi_iterator_t * pi);
+/**
+Get next packet in precinct-component-resolution-layer order.
+@param pi packet iterator to modify
+@return returns false if pi pointed to the last packet or else returns true
+*/
+static OPJ_BOOL opj_pi_next_pcrl(opj_pi_iterator_t * pi);
+/**
+Get next packet in component-precinct-resolution-layer order.
+@param pi packet iterator to modify
+@return returns false if pi pointed to the last packet or else returns true
+*/
+static OPJ_BOOL opj_pi_next_cprl(opj_pi_iterator_t * pi);
+
+/**
+ * Updates the coding parameters if the encoding is used with Progression order changes and final (or cinema parameters are used).
+ *
+ * @param   p_cp        the coding parameters to modify
+ * @param   p_tileno    the tile index being concerned.
+ * @param   p_tx0       X0 parameter for the tile
+ * @param   p_tx1       X1 parameter for the tile
+ * @param   p_ty0       Y0 parameter for the tile
+ * @param   p_ty1       Y1 parameter for the tile
+ * @param   p_max_prec  the maximum precision for all the bands of the tile
+ * @param   p_max_res   the maximum number of resolutions for all the poc inside the tile.
+ * @param   p_dx_min        the minimum dx of all the components of all the resolutions for the tile.
+ * @param   p_dy_min        the minimum dy of all the components of all the resolutions for the tile.
+ */
+static void opj_pi_update_encode_poc_and_final(opj_cp_t *p_cp,
+        OPJ_UINT32 p_tileno,
+        OPJ_UINT32 p_tx0,
+        OPJ_UINT32 p_tx1,
+        OPJ_UINT32 p_ty0,
+        OPJ_UINT32 p_ty1,
+        OPJ_UINT32 p_max_prec,
+        OPJ_UINT32 p_max_res,
+        OPJ_UINT32 p_dx_min,
+        OPJ_UINT32 p_dy_min);
+
+/**
+ * Updates the coding parameters if the encoding is not used with Progression order changes and final (and cinema parameters are used).
+ *
+ * @param   p_cp        the coding parameters to modify
+ * @param   p_num_comps     the number of components
+ * @param   p_tileno    the tile index being concerned.
+ * @param   p_tx0       X0 parameter for the tile
+ * @param   p_tx1       X1 parameter for the tile
+ * @param   p_ty0       Y0 parameter for the tile
+ * @param   p_ty1       Y1 parameter for the tile
+ * @param   p_max_prec  the maximum precision for all the bands of the tile
+ * @param   p_max_res   the maximum number of resolutions for all the poc inside the tile.
+ * @param   p_dx_min        the minimum dx of all the components of all the resolutions for the tile.
+ * @param   p_dy_min        the minimum dy of all the components of all the resolutions for the tile.
+ */
+static void opj_pi_update_encode_not_poc(opj_cp_t *p_cp,
+        OPJ_UINT32 p_num_comps,
+        OPJ_UINT32 p_tileno,
+        OPJ_UINT32 p_tx0,
+        OPJ_UINT32 p_tx1,
+        OPJ_UINT32 p_ty0,
+        OPJ_UINT32 p_ty1,
+        OPJ_UINT32 p_max_prec,
+        OPJ_UINT32 p_max_res,
+        OPJ_UINT32 p_dx_min,
+        OPJ_UINT32 p_dy_min);
+/**
+ * Gets the encoding parameters needed to update the coding parameters and all the pocs.
+ *
+ * @param   p_image         the image being encoded.
+ * @param   p_cp            the coding parameters.
+ * @param   tileno          the tile index of the tile being encoded.
+ * @param   p_tx0           pointer that will hold the X0 parameter for the tile
+ * @param   p_tx1           pointer that will hold the X1 parameter for the tile
+ * @param   p_ty0           pointer that will hold the Y0 parameter for the tile
+ * @param   p_ty1           pointer that will hold the Y1 parameter for the tile
+ * @param   p_max_prec      pointer that will hold the maximum precision for all the bands of the tile
+ * @param   p_max_res       pointer that will hold the maximum number of resolutions for all the poc inside the tile.
+ * @param   p_dx_min            pointer that will hold the minimum dx of all the components of all the resolutions for the tile.
+ * @param   p_dy_min            pointer that will hold the minimum dy of all the components of all the resolutions for the tile.
+ */
+static void opj_get_encoding_parameters(const opj_image_t *p_image,
+                                        const opj_cp_t *p_cp,
+                                        OPJ_UINT32  tileno,
+                                        OPJ_UINT32 * p_tx0,
+                                        OPJ_UINT32 * p_tx1,
+                                        OPJ_UINT32 * p_ty0,
+                                        OPJ_UINT32 * p_ty1,
+                                        OPJ_UINT32 * p_dx_min,
+                                        OPJ_UINT32 * p_dy_min,
+                                        OPJ_UINT32 * p_max_prec,
+                                        OPJ_UINT32 * p_max_res);
+
+/**
+ * Gets the encoding parameters needed to update the coding parameters and all the pocs.
+ * The precinct widths, heights, dx and dy for each component at each resolution will be stored as well.
+ * the last parameter of the function should be an array of pointers of size nb components, each pointer leading
+ * to an area of size 4 * max_res. The data is stored inside this area with the following pattern :
+ * dx_compi_res0 , dy_compi_res0 , w_compi_res0, h_compi_res0 , dx_compi_res1 , dy_compi_res1 , w_compi_res1, h_compi_res1 , ...
+ *
+ * @param   p_image         the image being encoded.
+ * @param   p_cp            the coding parameters.
+ * @param   tileno          the tile index of the tile being encoded.
+ * @param   p_tx0           pointer that will hold the X0 parameter for the tile
+ * @param   p_tx1           pointer that will hold the X1 parameter for the tile
+ * @param   p_ty0           pointer that will hold the Y0 parameter for the tile
+ * @param   p_ty1           pointer that will hold the Y1 parameter for the tile
+ * @param   p_max_prec      pointer that will hold the maximum precision for all the bands of the tile
+ * @param   p_max_res       pointer that will hold the maximum number of resolutions for all the poc inside the tile.
+ * @param   p_dx_min        pointer that will hold the minimum dx of all the components of all the resolutions for the tile.
+ * @param   p_dy_min        pointer that will hold the minimum dy of all the components of all the resolutions for the tile.
+ * @param   p_resolutions   pointer to an area corresponding to the one described above.
+ */
+static void opj_get_all_encoding_parameters(const opj_image_t *p_image,
+        const opj_cp_t *p_cp,
+        OPJ_UINT32 tileno,
+        OPJ_UINT32 * p_tx0,
+        OPJ_UINT32 * p_tx1,
+        OPJ_UINT32 * p_ty0,
+        OPJ_UINT32 * p_ty1,
+        OPJ_UINT32 * p_dx_min,
+        OPJ_UINT32 * p_dy_min,
+        OPJ_UINT32 * p_max_prec,
+        OPJ_UINT32 * p_max_res,
+        OPJ_UINT32 ** p_resolutions);
+/**
+ * Allocates memory for a packet iterator. Data and data sizes are set by this operation.
+ * No other data is set. The include section of the packet  iterator is not allocated.
+ *
+ * @param   p_image     the image used to initialize the packet iterator (in fact only the number of components is relevant.
+ * @param   p_cp        the coding parameters.
+ * @param   tileno  the index of the tile from which creating the packet iterator.
+ * @param   manager Event manager
+ */
+static opj_pi_iterator_t * opj_pi_create(const opj_image_t *p_image,
+        const opj_cp_t *p_cp,
+        OPJ_UINT32 tileno,
+        opj_event_mgr_t* manager);
+/**
+ * FIXME DOC
+ */
+static void opj_pi_update_decode_not_poc(opj_pi_iterator_t * p_pi,
+        opj_tcp_t * p_tcp,
+        OPJ_UINT32 p_max_precision,
+        OPJ_UINT32 p_max_res);
+/**
+ * FIXME DOC
+ */
+static void opj_pi_update_decode_poc(opj_pi_iterator_t * p_pi,
+                                     opj_tcp_t * p_tcp,
+                                     OPJ_UINT32 p_max_precision,
+                                     OPJ_UINT32 p_max_res);
+
+/**
+ * FIXME DOC
+ */
+static OPJ_BOOL opj_pi_check_next_level(OPJ_INT32 pos,
+                                        opj_cp_t *cp,
+                                        OPJ_UINT32 tileno,
+                                        OPJ_UINT32 pino,
+                                        const OPJ_CHAR *prog);
+
+/*@}*/
+
+/*@}*/
+
+/*
+==========================================================
+   local functions
+==========================================================
+*/
+
+static OPJ_BOOL opj_pi_next_lrcp(opj_pi_iterator_t * pi)
+{
+    opj_pi_comp_t *comp = NULL;
+    opj_pi_resolution_t *res = NULL;
+    OPJ_UINT32 index = 0;
+
+    if (pi->poc.compno0 >= pi->numcomps ||
+            pi->poc.compno1 >= pi->numcomps + 1) {
+        opj_event_msg(pi->manager, EVT_ERROR,
+                      "opj_pi_next_lrcp(): invalid compno0/compno1\n");
+        return OPJ_FALSE;
+    }
+
+    if (!pi->first) {
+        comp = &pi->comps[pi->compno];
+        res = &comp->resolutions[pi->resno];
+        goto LABEL_SKIP;
+    } else {
+        pi->first = 0;
+    }
+
+    for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
+        for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1;
+                pi->resno++) {
+            for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
+                comp = &pi->comps[pi->compno];
+                if (pi->resno >= comp->numresolutions) {
+                    continue;
+                }
+                res = &comp->resolutions[pi->resno];
+                if (!pi->tp_on) {
+                    pi->poc.precno1 = res->pw * res->ph;
+                }
+                for (pi->precno = pi->poc.precno0; pi->precno < pi->poc.precno1; pi->precno++) {
+                    index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno *
+                            pi->step_c + pi->precno * pi->step_p;
+                    /* Avoids index out of bounds access with */
+                    /* id_000098,sig_11,src_005411,op_havoc,rep_2 of */
+                    /* https://github.com/uclouvain/openjpeg/issues/938 */
+                    /* Not sure if this is the most clever fix. Perhaps */
+                    /* include should be resized when a POC arises, or */
+                    /* the POC should be rejected */
+                    if (index >= pi->include_size) {
+                        opj_event_msg(pi->manager, EVT_ERROR, "Invalid access to pi->include");
+                        return OPJ_FALSE;
+                    }
+                    if (!pi->include[index]) {
+                        pi->include[index] = 1;
+                        return OPJ_TRUE;
+                    }
+LABEL_SKIP:
+                    ;
+                }
+            }
+        }
+    }
+
+    return OPJ_FALSE;
+}
+
+static OPJ_BOOL opj_pi_next_rlcp(opj_pi_iterator_t * pi)
+{
+    opj_pi_comp_t *comp = NULL;
+    opj_pi_resolution_t *res = NULL;
+    OPJ_UINT32 index = 0;
+
+    if (pi->poc.compno0 >= pi->numcomps ||
+            pi->poc.compno1 >= pi->numcomps + 1) {
+        opj_event_msg(pi->manager, EVT_ERROR,
+                      "opj_pi_next_rlcp(): invalid compno0/compno1\n");
+        return OPJ_FALSE;
+    }
+
+    if (!pi->first) {
+        comp = &pi->comps[pi->compno];
+        res = &comp->resolutions[pi->resno];
+        goto LABEL_SKIP;
+    } else {
+        pi->first = 0;
+    }
+
+    for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
+        for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
+            for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
+                comp = &pi->comps[pi->compno];
+                if (pi->resno >= comp->numresolutions) {
+                    continue;
+                }
+                res = &comp->resolutions[pi->resno];
+                if (!pi->tp_on) {
+                    pi->poc.precno1 = res->pw * res->ph;
+                }
+                for (pi->precno = pi->poc.precno0; pi->precno < pi->poc.precno1; pi->precno++) {
+                    index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno *
+                            pi->step_c + pi->precno * pi->step_p;
+                    if (index >= pi->include_size) {
+                        opj_event_msg(pi->manager, EVT_ERROR, "Invalid access to pi->include");
+                        return OPJ_FALSE;
+                    }
+                    if (!pi->include[index]) {
+                        pi->include[index] = 1;
+                        return OPJ_TRUE;
+                    }
+LABEL_SKIP:
+                    ;
+                }
+            }
+        }
+    }
+
+    return OPJ_FALSE;
+}
+
+static OPJ_BOOL opj_pi_next_rpcl(opj_pi_iterator_t * pi)
+{
+    opj_pi_comp_t *comp = NULL;
+    opj_pi_resolution_t *res = NULL;
+    OPJ_UINT32 index = 0;
+
+    if (pi->poc.compno0 >= pi->numcomps ||
+            pi->poc.compno1 >= pi->numcomps + 1) {
+        opj_event_msg(pi->manager, EVT_ERROR,
+                      "opj_pi_next_rpcl(): invalid compno0/compno1\n");
+        return OPJ_FALSE;
+    }
+
+    if (!pi->first) {
+        goto LABEL_SKIP;
+    } else {
+        OPJ_UINT32 compno, resno;
+        pi->first = 0;
+        pi->dx = 0;
+        pi->dy = 0;
+        for (compno = 0; compno < pi->numcomps; compno++) {
+            comp = &pi->comps[compno];
+            for (resno = 0; resno < comp->numresolutions; resno++) {
+                OPJ_UINT32 dx, dy;
+                res = &comp->resolutions[resno];
+                if (res->pdx + comp->numresolutions - 1 - resno < 32 &&
+                        comp->dx <= UINT_MAX / (1u << (res->pdx + comp->numresolutions - 1 - resno))) {
+                    dx = comp->dx * (1u << (res->pdx + comp->numresolutions - 1 - resno));
+                    pi->dx = !pi->dx ? dx : opj_uint_min(pi->dx, dx);
+                }
+                if (res->pdy + comp->numresolutions - 1 - resno < 32 &&
+                        comp->dy <= UINT_MAX / (1u << (res->pdy + comp->numresolutions - 1 - resno))) {
+                    dy = comp->dy * (1u << (res->pdy + comp->numresolutions - 1 - resno));
+                    pi->dy = !pi->dy ? dy : opj_uint_min(pi->dy, dy);
+                }
+            }
+        }
+        if (pi->dx == 0 || pi->dy == 0) {
+            return OPJ_FALSE;
+        }
+    }
+    if (!pi->tp_on) {
+        pi->poc.ty0 = pi->ty0;
+        pi->poc.tx0 = pi->tx0;
+        pi->poc.ty1 = pi->ty1;
+        pi->poc.tx1 = pi->tx1;
+    }
+    for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
+        for (pi->y = (OPJ_UINT32)pi->poc.ty0; pi->y < (OPJ_UINT32)pi->poc.ty1;
+                pi->y += (pi->dy - (pi->y % pi->dy))) {
+            for (pi->x = (OPJ_UINT32)pi->poc.tx0; pi->x < (OPJ_UINT32)pi->poc.tx1;
+                    pi->x += (pi->dx - (pi->x % pi->dx))) {
+                for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
+                    OPJ_UINT32 levelno;
+                    OPJ_UINT32 trx0, try0;
+                    OPJ_UINT32  trx1, try1;
+                    OPJ_UINT32  rpx, rpy;
+                    OPJ_UINT32  prci, prcj;
+                    comp = &pi->comps[pi->compno];
+                    if (pi->resno >= comp->numresolutions) {
+                        continue;
+                    }
+                    res = &comp->resolutions[pi->resno];
+                    levelno = comp->numresolutions - 1 - pi->resno;
+
+                    if ((OPJ_UINT32)(((OPJ_UINT64)comp->dx << levelno) >> levelno) != comp->dx ||
+                            (OPJ_UINT32)(((OPJ_UINT64)comp->dy << levelno) >> levelno) != comp->dy) {
+                        continue;
+                    }
+
+                    trx0 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->tx0,
+                                                         ((OPJ_UINT64)comp->dx << levelno));
+                    try0 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->ty0,
+                                                         ((OPJ_UINT64)comp->dy << levelno));
+                    trx1 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->tx1,
+                                                         ((OPJ_UINT64)comp->dx << levelno));
+                    try1 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->ty1,
+                                                         ((OPJ_UINT64)comp->dy << levelno));
+                    rpx = res->pdx + levelno;
+                    rpy = res->pdy + levelno;
+
+                    if ((OPJ_UINT32)(((OPJ_UINT64)comp->dx << rpx) >> rpx) != comp->dx ||
+                            (OPJ_UINT32)(((OPJ_UINT64)comp->dy << rpy) >> rpy) != comp->dy) {
+                        continue;
+                    }
+
+                    /* See ISO-15441. B.12.1.3 Resolution level-position-component-layer progression */
+                    if (!(((OPJ_UINT64)pi->y % ((OPJ_UINT64)comp->dy << rpy) == 0) ||
+                            ((pi->y == pi->ty0) &&
+                             (((OPJ_UINT64)try0 << levelno) % ((OPJ_UINT64)1U << rpy))))) {
+                        continue;
+                    }
+                    if (!(((OPJ_UINT64)pi->x % ((OPJ_UINT64)comp->dx << rpx) == 0) ||
+                            ((pi->x == pi->tx0) &&
+                             (((OPJ_UINT64)trx0 << levelno) % ((OPJ_UINT64)1U << rpx))))) {
+                        continue;
+                    }
+
+                    if ((res->pw == 0) || (res->ph == 0)) {
+                        continue;
+                    }
+
+                    if ((trx0 == trx1) || (try0 == try1)) {
+                        continue;
+                    }
+
+                    prci = opj_uint_floordivpow2(opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->x,
+                                                 ((OPJ_UINT64)comp->dx << levelno)), res->pdx)
+                           - opj_uint_floordivpow2(trx0, res->pdx);
+                    prcj = opj_uint_floordivpow2(opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->y,
+                                                 ((OPJ_UINT64)comp->dy << levelno)), res->pdy)
+                           - opj_uint_floordivpow2(try0, res->pdy);
+                    pi->precno = prci + prcj * res->pw;
+                    for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
+                        index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno *
+                                pi->step_c + pi->precno * pi->step_p;
+                        if (index >= pi->include_size) {
+                            opj_event_msg(pi->manager, EVT_ERROR, "Invalid access to pi->include");
+                            return OPJ_FALSE;
+                        }
+                        if (!pi->include[index]) {
+                            pi->include[index] = 1;
+                            return OPJ_TRUE;
+                        }
+LABEL_SKIP:
+                        ;
+                    }
+                }
+            }
+        }
+    }
+
+    return OPJ_FALSE;
+}
+
+static OPJ_BOOL opj_pi_next_pcrl(opj_pi_iterator_t * pi)
+{
+    opj_pi_comp_t *comp = NULL;
+    opj_pi_resolution_t *res = NULL;
+    OPJ_UINT32 index = 0;
+
+    if (pi->poc.compno0 >= pi->numcomps ||
+            pi->poc.compno1 >= pi->numcomps + 1) {
+        opj_event_msg(pi->manager, EVT_ERROR,
+                      "opj_pi_next_pcrl(): invalid compno0/compno1\n");
+        return OPJ_FALSE;
+    }
+
+    if (!pi->first) {
+        comp = &pi->comps[pi->compno];
+        goto LABEL_SKIP;
+    } else {
+        OPJ_UINT32 compno, resno;
+        pi->first = 0;
+        pi->dx = 0;
+        pi->dy = 0;
+        for (compno = 0; compno < pi->numcomps; compno++) {
+            comp = &pi->comps[compno];
+            for (resno = 0; resno < comp->numresolutions; resno++) {
+                OPJ_UINT32 dx, dy;
+                res = &comp->resolutions[resno];
+                if (res->pdx + comp->numresolutions - 1 - resno < 32 &&
+                        comp->dx <= UINT_MAX / (1u << (res->pdx + comp->numresolutions - 1 - resno))) {
+                    dx = comp->dx * (1u << (res->pdx + comp->numresolutions - 1 - resno));
+                    pi->dx = !pi->dx ? dx : opj_uint_min(pi->dx, dx);
+                }
+                if (res->pdy + comp->numresolutions - 1 - resno < 32 &&
+                        comp->dy <= UINT_MAX / (1u << (res->pdy + comp->numresolutions - 1 - resno))) {
+                    dy = comp->dy * (1u << (res->pdy + comp->numresolutions - 1 - resno));
+                    pi->dy = !pi->dy ? dy : opj_uint_min(pi->dy, dy);
+                }
+            }
+        }
+        if (pi->dx == 0 || pi->dy == 0) {
+            return OPJ_FALSE;
+        }
+    }
+    if (!pi->tp_on) {
+        pi->poc.ty0 = pi->ty0;
+        pi->poc.tx0 = pi->tx0;
+        pi->poc.ty1 = pi->ty1;
+        pi->poc.tx1 = pi->tx1;
+    }
+    for (pi->y = (OPJ_UINT32)pi->poc.ty0; pi->y < (OPJ_UINT32)pi->poc.ty1;
+            pi->y += (pi->dy - (pi->y % pi->dy))) {
+        for (pi->x = (OPJ_UINT32)pi->poc.tx0; pi->x < (OPJ_UINT32)pi->poc.tx1;
+                pi->x += (pi->dx - (pi->x % pi->dx))) {
+            for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
+                comp = &pi->comps[pi->compno];
+                for (pi->resno = pi->poc.resno0;
+                        pi->resno < opj_uint_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
+                    OPJ_UINT32 levelno;
+                    OPJ_UINT32 trx0, try0;
+                    OPJ_UINT32 trx1, try1;
+                    OPJ_UINT32 rpx, rpy;
+                    OPJ_UINT32 prci, prcj;
+                    res = &comp->resolutions[pi->resno];
+                    levelno = comp->numresolutions - 1 - pi->resno;
+
+                    if ((OPJ_UINT32)(((OPJ_UINT64)comp->dx << levelno) >> levelno) != comp->dx ||
+                            (OPJ_UINT32)(((OPJ_UINT64)comp->dy << levelno) >> levelno) != comp->dy) {
+                        continue;
+                    }
+
+                    trx0 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->tx0,
+                                                         ((OPJ_UINT64)comp->dx << levelno));
+                    try0 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->ty0,
+                                                         ((OPJ_UINT64)comp->dy << levelno));
+                    trx1 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->tx1,
+                                                         ((OPJ_UINT64)comp->dx << levelno));
+                    try1 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->ty1,
+                                                         ((OPJ_UINT64)comp->dy << levelno));
+                    rpx = res->pdx + levelno;
+                    rpy = res->pdy + levelno;
+
+                    if ((OPJ_UINT32)(((OPJ_UINT64)comp->dx << rpx) >> rpx) != comp->dx ||
+                            (OPJ_UINT32)(((OPJ_UINT64)comp->dy << rpy) >> rpy) != comp->dy) {
+                        continue;
+                    }
+
+                    /* See ISO-15441. B.12.1.4 Position-component-resolution level-layer progression */
+                    if (!(((OPJ_UINT64)pi->y % ((OPJ_UINT64)comp->dy << rpy) == 0) ||
+                            ((pi->y == pi->ty0) &&
+                             (((OPJ_UINT64)try0 << levelno) % ((OPJ_UINT64)1U << rpy))))) {
+                        continue;
+                    }
+                    if (!(((OPJ_UINT64)pi->x % ((OPJ_UINT64)comp->dx << rpx) == 0) ||
+                            ((pi->x == pi->tx0) &&
+                             (((OPJ_UINT64)trx0 << levelno) % ((OPJ_UINT64)1U << rpx))))) {
+                        continue;
+                    }
+
+                    if ((res->pw == 0) || (res->ph == 0)) {
+                        continue;
+                    }
+
+                    if ((trx0 == trx1) || (try0 == try1)) {
+                        continue;
+                    }
+
+                    prci = opj_uint_floordivpow2(opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->x,
+                                                 ((OPJ_UINT64)comp->dx << levelno)), res->pdx)
+                           - opj_uint_floordivpow2(trx0, res->pdx);
+                    prcj = opj_uint_floordivpow2(opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->y,
+                                                 ((OPJ_UINT64)comp->dy << levelno)), res->pdy)
+                           - opj_uint_floordivpow2(try0, res->pdy);
+                    pi->precno = prci + prcj * res->pw;
+                    for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
+                        index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno *
+                                pi->step_c + pi->precno * pi->step_p;
+                        if (index >= pi->include_size) {
+                            opj_event_msg(pi->manager, EVT_ERROR, "Invalid access to pi->include");
+                            return OPJ_FALSE;
+                        }
+                        if (!pi->include[index]) {
+                            pi->include[index] = 1;
+                            return OPJ_TRUE;
+                        }
+LABEL_SKIP:
+                        ;
+                    }
+                }
+            }
+        }
+    }
+
+    return OPJ_FALSE;
+}
+
+static OPJ_BOOL opj_pi_next_cprl(opj_pi_iterator_t * pi)
+{
+    opj_pi_comp_t *comp = NULL;
+    opj_pi_resolution_t *res = NULL;
+    OPJ_UINT32 index = 0;
+
+    if (pi->poc.compno0 >= pi->numcomps ||
+            pi->poc.compno1 >= pi->numcomps + 1) {
+        opj_event_msg(pi->manager, EVT_ERROR,
+                      "opj_pi_next_cprl(): invalid compno0/compno1\n");
+        return OPJ_FALSE;
+    }
+
+    if (!pi->first) {
+        comp = &pi->comps[pi->compno];
+        goto LABEL_SKIP;
+    } else {
+        pi->first = 0;
+    }
+
+    for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
+        OPJ_UINT32 resno;
+        comp = &pi->comps[pi->compno];
+        pi->dx = 0;
+        pi->dy = 0;
+        for (resno = 0; resno < comp->numresolutions; resno++) {
+            OPJ_UINT32 dx, dy;
+            res = &comp->resolutions[resno];
+            if (res->pdx + comp->numresolutions - 1 - resno < 32 &&
+                    comp->dx <= UINT_MAX / (1u << (res->pdx + comp->numresolutions - 1 - resno))) {
+                dx = comp->dx * (1u << (res->pdx + comp->numresolutions - 1 - resno));
+                pi->dx = !pi->dx ? dx : opj_uint_min(pi->dx, dx);
+            }
+            if (res->pdy + comp->numresolutions - 1 - resno < 32 &&
+                    comp->dy <= UINT_MAX / (1u << (res->pdy + comp->numresolutions - 1 - resno))) {
+                dy = comp->dy * (1u << (res->pdy + comp->numresolutions - 1 - resno));
+                pi->dy = !pi->dy ? dy : opj_uint_min(pi->dy, dy);
+            }
+        }
+        if (pi->dx == 0 || pi->dy == 0) {
+            return OPJ_FALSE;
+        }
+        if (!pi->tp_on) {
+            pi->poc.ty0 = pi->ty0;
+            pi->poc.tx0 = pi->tx0;
+            pi->poc.ty1 = pi->ty1;
+            pi->poc.tx1 = pi->tx1;
+        }
+        for (pi->y = (OPJ_UINT32)pi->poc.ty0; pi->y < (OPJ_UINT32)pi->poc.ty1;
+                pi->y += (pi->dy - (pi->y % pi->dy))) {
+            for (pi->x = (OPJ_UINT32)pi->poc.tx0; pi->x < (OPJ_UINT32)pi->poc.tx1;
+                    pi->x += (pi->dx - (pi->x % pi->dx))) {
+                for (pi->resno = pi->poc.resno0;
+                        pi->resno < opj_uint_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
+                    OPJ_UINT32 levelno;
+                    OPJ_UINT32 trx0, try0;
+                    OPJ_UINT32 trx1, try1;
+                    OPJ_UINT32 rpx, rpy;
+                    OPJ_UINT32 prci, prcj;
+                    res = &comp->resolutions[pi->resno];
+                    levelno = comp->numresolutions - 1 - pi->resno;
+
+                    if ((OPJ_UINT32)(((OPJ_UINT64)comp->dx << levelno) >> levelno) != comp->dx ||
+                            (OPJ_UINT32)(((OPJ_UINT64)comp->dy << levelno) >> levelno) != comp->dy) {
+                        continue;
+                    }
+
+                    trx0 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->tx0,
+                                                         ((OPJ_UINT64)comp->dx << levelno));
+                    try0 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->ty0,
+                                                         ((OPJ_UINT64)comp->dy << levelno));
+                    trx1 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->tx1,
+                                                         ((OPJ_UINT64)comp->dx << levelno));
+                    try1 = opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->ty1,
+                                                         ((OPJ_UINT64)comp->dy << levelno));
+                    rpx = res->pdx + levelno;
+                    rpy = res->pdy + levelno;
+
+                    if ((OPJ_UINT32)(((OPJ_UINT64)comp->dx << rpx) >> rpx) != comp->dx ||
+                            (OPJ_UINT32)(((OPJ_UINT64)comp->dy << rpy) >> rpy) != comp->dy) {
+                        continue;
+                    }
+
+                    /* See ISO-15441. B.12.1.5 Component-position-resolution level-layer progression */
+                    if (!(((OPJ_UINT64)pi->y % ((OPJ_UINT64)comp->dy << rpy) == 0) ||
+                            ((pi->y == pi->ty0) &&
+                             (((OPJ_UINT64)try0 << levelno) % ((OPJ_UINT64)1U << rpy))))) {
+                        continue;
+                    }
+                    if (!(((OPJ_UINT64)pi->x % ((OPJ_UINT64)comp->dx << rpx) == 0) ||
+                            ((pi->x == pi->tx0) &&
+                             (((OPJ_UINT64)trx0 << levelno) % ((OPJ_UINT64)1U << rpx))))) {
+                        continue;
+                    }
+
+                    if ((res->pw == 0) || (res->ph == 0)) {
+                        continue;
+                    }
+
+                    if ((trx0 == trx1) || (try0 == try1)) {
+                        continue;
+                    }
+
+                    prci = opj_uint_floordivpow2(opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->x,
+                                                 ((OPJ_UINT64)comp->dx << levelno)), res->pdx)
+                           - opj_uint_floordivpow2(trx0, res->pdx);
+                    prcj = opj_uint_floordivpow2(opj_uint64_ceildiv_res_uint32((OPJ_UINT64)pi->y,
+                                                 ((OPJ_UINT64)comp->dy << levelno)), res->pdy)
+                           - opj_uint_floordivpow2(try0, res->pdy);
+                    pi->precno = (OPJ_UINT32)(prci + prcj * res->pw);
+                    for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
+                        index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno *
+                                pi->step_c + pi->precno * pi->step_p;
+                        if (index >= pi->include_size) {
+                            opj_event_msg(pi->manager, EVT_ERROR, "Invalid access to pi->include");
+                            return OPJ_FALSE;
+                        }
+                        if (!pi->include[index]) {
+                            pi->include[index] = 1;
+                            return OPJ_TRUE;
+                        }
+LABEL_SKIP:
+                        ;
+                    }
+                }
+            }
+        }
+    }
+
+    return OPJ_FALSE;
+}
+
+static void opj_get_encoding_parameters(const opj_image_t *p_image,
+                                        const opj_cp_t *p_cp,
+                                        OPJ_UINT32 p_tileno,
+                                        OPJ_UINT32 * p_tx0,
+                                        OPJ_UINT32  * p_tx1,
+                                        OPJ_UINT32  * p_ty0,
+                                        OPJ_UINT32  * p_ty1,
+                                        OPJ_UINT32 * p_dx_min,
+                                        OPJ_UINT32 * p_dy_min,
+                                        OPJ_UINT32 * p_max_prec,
+                                        OPJ_UINT32 * p_max_res)
+{
+    /* loop */
+    OPJ_UINT32  compno, resno;
+    /* pointers */
+    const opj_tcp_t *l_tcp = 00;
+    const opj_tccp_t * l_tccp = 00;
+    const opj_image_comp_t * l_img_comp = 00;
+
+    /* position in x and y of tile */
+    OPJ_UINT32 p, q;
+
+    /* non-corrected (in regard to image offset) tile offset */
+    OPJ_UINT32 l_tx0, l_ty0;
+
+    /* preconditions */
+    assert(p_cp != 00);
+    assert(p_image != 00);
+    assert(p_tileno < p_cp->tw * p_cp->th);
+
+    /* initializations */
+    l_tcp = &p_cp->tcps [p_tileno];
+    l_img_comp = p_image->comps;
+    l_tccp = l_tcp->tccps;
+
+    /* here calculation of tx0, tx1, ty0, ty1, maxprec, dx and dy */
+    p = p_tileno % p_cp->tw;
+    q = p_tileno / p_cp->tw;
+
+    /* find extent of tile */
+    l_tx0 = p_cp->tx0 + p *
+            p_cp->tdx; /* can't be greater than p_image->x1 so won't overflow */
+    *p_tx0 = opj_uint_max(l_tx0, p_image->x0);
+    *p_tx1 = opj_uint_min(opj_uint_adds(l_tx0, p_cp->tdx), p_image->x1);
+    l_ty0 = p_cp->ty0 + q *
+            p_cp->tdy; /* can't be greater than p_image->y1 so won't overflow */
+    *p_ty0 = opj_uint_max(l_ty0, p_image->y0);
+    *p_ty1 = opj_uint_min(opj_uint_adds(l_ty0, p_cp->tdy), p_image->y1);
+
+    /* max precision is 0 (can only grow) */
+    *p_max_prec = 0;
+    *p_max_res = 0;
+
+    /* take the largest value for dx_min and dy_min */
+    *p_dx_min = 0x7fffffff;
+    *p_dy_min  = 0x7fffffff;
+
+    for (compno = 0; compno < p_image->numcomps; ++compno) {
+        /* arithmetic variables to calculate */
+        OPJ_UINT32 l_level_no;
+        OPJ_UINT32 l_rx0, l_ry0, l_rx1, l_ry1;
+        OPJ_UINT32 l_px0, l_py0, l_px1, py1;
+        OPJ_UINT32 l_pdx, l_pdy;
+        OPJ_UINT32 l_pw, l_ph;
+        OPJ_UINT32 l_product;
+        OPJ_UINT32 l_tcx0, l_tcy0, l_tcx1, l_tcy1;
+
+        l_tcx0 = opj_uint_ceildiv(*p_tx0, l_img_comp->dx);
+        l_tcy0 = opj_uint_ceildiv(*p_ty0, l_img_comp->dy);
+        l_tcx1 = opj_uint_ceildiv(*p_tx1, l_img_comp->dx);
+        l_tcy1 = opj_uint_ceildiv(*p_ty1, l_img_comp->dy);
+
+        if (l_tccp->numresolutions > *p_max_res) {
+            *p_max_res = l_tccp->numresolutions;
+        }
+
+        /* use custom size for precincts */
+        for (resno = 0; resno < l_tccp->numresolutions; ++resno) {
+            OPJ_UINT64 l_dx, l_dy;
+
+            /* precinct width and height */
+            l_pdx = l_tccp->prcw[resno];
+            l_pdy = l_tccp->prch[resno];
+
+            l_dx = l_img_comp->dx * ((OPJ_UINT64)1u << (l_pdx + l_tccp->numresolutions - 1 -
+                                     resno));
+            l_dy = l_img_comp->dy * ((OPJ_UINT64)1u << (l_pdy + l_tccp->numresolutions - 1 -
+                                     resno));
+
+            /* take the minimum size for dx for each comp and resolution */
+            if (l_dx <= UINT_MAX) {
+                *p_dx_min = opj_uint_min(*p_dx_min, (OPJ_UINT32)l_dx);
+            }
+            if (l_dy <= UINT_MAX) {
+                *p_dy_min = opj_uint_min(*p_dy_min, (OPJ_UINT32)l_dy);
+            }
+
+            /* various calculations of extents */
+            l_level_no = l_tccp->numresolutions - 1 - resno;
+
+            l_rx0 = opj_uint_ceildivpow2(l_tcx0, l_level_no);
+            l_ry0 = opj_uint_ceildivpow2(l_tcy0, l_level_no);
+            l_rx1 = opj_uint_ceildivpow2(l_tcx1, l_level_no);
+            l_ry1 = opj_uint_ceildivpow2(l_tcy1, l_level_no);
+
+            l_px0 = opj_uint_floordivpow2(l_rx0, l_pdx) << l_pdx;
+            l_py0 = opj_uint_floordivpow2(l_ry0, l_pdy) << l_pdy;
+            l_px1 = opj_uint_ceildivpow2(l_rx1, l_pdx) << l_pdx;
+
+            py1 = opj_uint_ceildivpow2(l_ry1, l_pdy) << l_pdy;
+
+            l_pw = (l_rx0 == l_rx1) ? 0 : ((l_px1 - l_px0) >> l_pdx);
+            l_ph = (l_ry0 == l_ry1) ? 0 : ((py1 - l_py0) >> l_pdy);
+
+            l_product = l_pw * l_ph;
+
+            /* update precision */
+            if (l_product > *p_max_prec) {
+                *p_max_prec = l_product;
+            }
+        }
+        ++l_img_comp;
+        ++l_tccp;
+    }
+}
+
+
+static void opj_get_all_encoding_parameters(const opj_image_t *p_image,
+        const opj_cp_t *p_cp,
+        OPJ_UINT32 tileno,
+        OPJ_UINT32 * p_tx0,
+        OPJ_UINT32 * p_tx1,
+        OPJ_UINT32 * p_ty0,
+        OPJ_UINT32 * p_ty1,
+        OPJ_UINT32 * p_dx_min,
+        OPJ_UINT32 * p_dy_min,
+        OPJ_UINT32 * p_max_prec,
+        OPJ_UINT32 * p_max_res,
+        OPJ_UINT32 ** p_resolutions)
+{
+    /* loop*/
+    OPJ_UINT32 compno, resno;
+
+    /* pointers*/
+    const opj_tcp_t *tcp = 00;
+    const opj_tccp_t * l_tccp = 00;
+    const opj_image_comp_t * l_img_comp = 00;
+
+    /* to store l_dx, l_dy, w and h for each resolution and component.*/
+    OPJ_UINT32 * lResolutionPtr;
+
+    /* position in x and y of tile*/
+    OPJ_UINT32 p, q;
+
+    /* non-corrected (in regard to image offset) tile offset */
+    OPJ_UINT32 l_tx0, l_ty0;
+
+    /* preconditions in debug*/
+    assert(p_cp != 00);
+    assert(p_image != 00);
+    assert(tileno < p_cp->tw * p_cp->th);
+
+    /* initializations*/
+    tcp = &p_cp->tcps [tileno];
+    l_tccp = tcp->tccps;
+    l_img_comp = p_image->comps;
+
+    /* position in x and y of tile*/
+    p = tileno % p_cp->tw;
+    q = tileno / p_cp->tw;
+
+    /* here calculation of tx0, tx1, ty0, ty1, maxprec, l_dx and l_dy */
+    l_tx0 = p_cp->tx0 + p *
+            p_cp->tdx; /* can't be greater than p_image->x1 so won't overflow */
+    *p_tx0 = opj_uint_max(l_tx0, p_image->x0);
+    *p_tx1 = opj_uint_min(opj_uint_adds(l_tx0, p_cp->tdx), p_image->x1);
+    l_ty0 = p_cp->ty0 + q *
+            p_cp->tdy; /* can't be greater than p_image->y1 so won't overflow */
+    *p_ty0 = opj_uint_max(l_ty0, p_image->y0);
+    *p_ty1 = opj_uint_min(opj_uint_adds(l_ty0, p_cp->tdy), p_image->y1);
+
+    /* max precision and resolution is 0 (can only grow)*/
+    *p_max_prec = 0;
+    *p_max_res = 0;
+
+    /* take the largest value for dx_min and dy_min*/
+    *p_dx_min = 0x7fffffff;
+    *p_dy_min = 0x7fffffff;
+
+    for (compno = 0; compno < p_image->numcomps; ++compno) {
+        /* arithmetic variables to calculate*/
+        OPJ_UINT32 l_level_no;
+        OPJ_UINT32 l_rx0, l_ry0, l_rx1, l_ry1;
+        OPJ_UINT32 l_px0, l_py0, l_px1, py1;
+        OPJ_UINT32 l_product;
+        OPJ_UINT32 l_tcx0, l_tcy0, l_tcx1, l_tcy1;
+        OPJ_UINT32 l_pdx, l_pdy, l_pw, l_ph;
+
+        lResolutionPtr = p_resolutions ? p_resolutions[compno] : NULL;
+
+        l_tcx0 = opj_uint_ceildiv(*p_tx0, l_img_comp->dx);
+        l_tcy0 = opj_uint_ceildiv(*p_ty0, l_img_comp->dy);
+        l_tcx1 = opj_uint_ceildiv(*p_tx1, l_img_comp->dx);
+        l_tcy1 = opj_uint_ceildiv(*p_ty1, l_img_comp->dy);
+
+        if (l_tccp->numresolutions > *p_max_res) {
+            *p_max_res = l_tccp->numresolutions;
+        }
+
+        /* use custom size for precincts*/
+        l_level_no = l_tccp->numresolutions;
+        for (resno = 0; resno < l_tccp->numresolutions; ++resno) {
+            OPJ_UINT32 l_dx, l_dy;
+
+            --l_level_no;
+
+            /* precinct width and height*/
+            l_pdx = l_tccp->prcw[resno];
+            l_pdy = l_tccp->prch[resno];
+            if (lResolutionPtr) {
+                *lResolutionPtr++ = l_pdx;
+                *lResolutionPtr++ = l_pdy;
+            }
+            if (l_pdx + l_level_no < 32 &&
+                    l_img_comp->dx <= UINT_MAX / (1u << (l_pdx + l_level_no))) {
+                l_dx = l_img_comp->dx * (1u << (l_pdx + l_level_no));
+                /* take the minimum size for l_dx for each comp and resolution*/
+                *p_dx_min = opj_uint_min(*p_dx_min, l_dx);
+            }
+            if (l_pdy + l_level_no < 32 &&
+                    l_img_comp->dy <= UINT_MAX / (1u << (l_pdy + l_level_no))) {
+                l_dy = l_img_comp->dy * (1u << (l_pdy + l_level_no));
+                *p_dy_min = opj_uint_min(*p_dy_min, l_dy);
+            }
+
+            /* various calculations of extents*/
+            l_rx0 = opj_uint_ceildivpow2(l_tcx0, l_level_no);
+            l_ry0 = opj_uint_ceildivpow2(l_tcy0, l_level_no);
+            l_rx1 = opj_uint_ceildivpow2(l_tcx1, l_level_no);
+            l_ry1 = opj_uint_ceildivpow2(l_tcy1, l_level_no);
+            l_px0 = opj_uint_floordivpow2(l_rx0, l_pdx) << l_pdx;
+            l_py0 = opj_uint_floordivpow2(l_ry0, l_pdy) << l_pdy;
+            l_px1 = opj_uint_ceildivpow2(l_rx1, l_pdx) << l_pdx;
+            py1 = opj_uint_ceildivpow2(l_ry1, l_pdy) << l_pdy;
+            l_pw = (l_rx0 == l_rx1) ? 0 : ((l_px1 - l_px0) >> l_pdx);
+            l_ph = (l_ry0 == l_ry1) ? 0 : ((py1 - l_py0) >> l_pdy);
+            if (lResolutionPtr) {
+                *lResolutionPtr++ = l_pw;
+                *lResolutionPtr++ = l_ph;
+            }
+            l_product = l_pw * l_ph;
+
+            /* update precision*/
+            if (l_product > *p_max_prec) {
+                *p_max_prec = l_product;
+            }
+
+        }
+        ++l_tccp;
+        ++l_img_comp;
+    }
+}
+
+static opj_pi_iterator_t * opj_pi_create(const opj_image_t *image,
+        const opj_cp_t *cp,
+        OPJ_UINT32 tileno,
+        opj_event_mgr_t* manager)
+{
+    /* loop*/
+    OPJ_UINT32 pino, compno;
+    /* number of poc in the p_pi*/
+    OPJ_UINT32 l_poc_bound;
+
+    /* pointers to tile coding parameters and components.*/
+    opj_pi_iterator_t *l_pi = 00;
+    opj_tcp_t *tcp = 00;
+    const opj_tccp_t *tccp = 00;
+
+    /* current packet iterator being allocated*/
+    opj_pi_iterator_t *l_current_pi = 00;
+
+    /* preconditions in debug*/
+    assert(cp != 00);
+    assert(image != 00);
+    assert(tileno < cp->tw * cp->th);
+
+    /* initializations*/
+    tcp = &cp->tcps[tileno];
+    l_poc_bound = tcp->numpocs + 1;
+
+    /* memory allocations*/
+    l_pi = (opj_pi_iterator_t*) opj_calloc((l_poc_bound),
+                                           sizeof(opj_pi_iterator_t));
+    if (!l_pi) {
+        return NULL;
+    }
+
+    l_current_pi = l_pi;
+    for (pino = 0; pino < l_poc_bound ; ++pino) {
+
+        l_current_pi->manager = manager;
+
+        l_current_pi->comps = (opj_pi_comp_t*) opj_calloc(image->numcomps,
+                              sizeof(opj_pi_comp_t));
+        if (! l_current_pi->comps) {
+            opj_pi_destroy(l_pi, l_poc_bound);
+            return NULL;
+        }
+
+        l_current_pi->numcomps = image->numcomps;
+
+        for (compno = 0; compno < image->numcomps; ++compno) {
+            opj_pi_comp_t *comp = &l_current_pi->comps[compno];
+
+            tccp = &tcp->tccps[compno];
+
+            comp->resolutions = (opj_pi_resolution_t*) opj_calloc(tccp->numresolutions,
+                                sizeof(opj_pi_resolution_t));
+            if (!comp->resolutions) {
+                opj_pi_destroy(l_pi, l_poc_bound);
+                return 00;
+            }
+
+            comp->numresolutions = tccp->numresolutions;
+        }
+        ++l_current_pi;
+    }
+    return l_pi;
+}
+
+static void opj_pi_update_encode_poc_and_final(opj_cp_t *p_cp,
+        OPJ_UINT32 p_tileno,
+        OPJ_UINT32 p_tx0,
+        OPJ_UINT32 p_tx1,
+        OPJ_UINT32 p_ty0,
+        OPJ_UINT32 p_ty1,
+        OPJ_UINT32 p_max_prec,
+        OPJ_UINT32 p_max_res,
+        OPJ_UINT32 p_dx_min,
+        OPJ_UINT32 p_dy_min)
+{
+    /* loop*/
+    OPJ_UINT32 pino;
+    /* tile coding parameter*/
+    opj_tcp_t *l_tcp = 00;
+    /* current poc being updated*/
+    opj_poc_t * l_current_poc = 00;
+
+    /* number of pocs*/
+    OPJ_UINT32 l_poc_bound;
+
+    OPJ_ARG_NOT_USED(p_max_res);
+
+    /* preconditions in debug*/
+    assert(p_cp != 00);
+    assert(p_tileno < p_cp->tw * p_cp->th);
+
+    /* initializations*/
+    l_tcp = &p_cp->tcps [p_tileno];
+    /* number of iterations in the loop */
+    l_poc_bound = l_tcp->numpocs + 1;
+
+    /* start at first element, and to make sure the compiler will not make a calculation each time in the loop
+       store a pointer to the current element to modify rather than l_tcp->pocs[i]*/
+    l_current_poc = l_tcp->pocs;
+
+    l_current_poc->compS = l_current_poc->compno0;
+    l_current_poc->compE = l_current_poc->compno1;
+    l_current_poc->resS = l_current_poc->resno0;
+    l_current_poc->resE = l_current_poc->resno1;
+    l_current_poc->layE = l_current_poc->layno1;
+
+    /* special treatment for the first element*/
+    l_current_poc->layS = 0;
+    l_current_poc->prg  = l_current_poc->prg1;
+    l_current_poc->prcS = 0;
+
+    l_current_poc->prcE = p_max_prec;
+    l_current_poc->txS = (OPJ_UINT32)p_tx0;
+    l_current_poc->txE = (OPJ_UINT32)p_tx1;
+    l_current_poc->tyS = (OPJ_UINT32)p_ty0;
+    l_current_poc->tyE = (OPJ_UINT32)p_ty1;
+    l_current_poc->dx = p_dx_min;
+    l_current_poc->dy = p_dy_min;
+
+    ++ l_current_poc;
+    for (pino = 1; pino < l_poc_bound ; ++pino) {
+        l_current_poc->compS = l_current_poc->compno0;
+        l_current_poc->compE = l_current_poc->compno1;
+        l_current_poc->resS = l_current_poc->resno0;
+        l_current_poc->resE = l_current_poc->resno1;
+        l_current_poc->layE = l_current_poc->layno1;
+        l_current_poc->prg  = l_current_poc->prg1;
+        l_current_poc->prcS = 0;
+        /* special treatment here different from the first element*/
+        l_current_poc->layS = (l_current_poc->layE > (l_current_poc - 1)->layE) ?
+                              l_current_poc->layE : 0;
+
+        l_current_poc->prcE = p_max_prec;
+        l_current_poc->txS = (OPJ_UINT32)p_tx0;
+        l_current_poc->txE = (OPJ_UINT32)p_tx1;
+        l_current_poc->tyS = (OPJ_UINT32)p_ty0;
+        l_current_poc->tyE = (OPJ_UINT32)p_ty1;
+        l_current_poc->dx = p_dx_min;
+        l_current_poc->dy = p_dy_min;
+        ++ l_current_poc;
+    }
+}
+
+static void opj_pi_update_encode_not_poc(opj_cp_t *p_cp,
+        OPJ_UINT32 p_num_comps,
+        OPJ_UINT32 p_tileno,
+        OPJ_UINT32 p_tx0,
+        OPJ_UINT32 p_tx1,
+        OPJ_UINT32 p_ty0,
+        OPJ_UINT32 p_ty1,
+        OPJ_UINT32 p_max_prec,
+        OPJ_UINT32 p_max_res,
+        OPJ_UINT32 p_dx_min,
+        OPJ_UINT32 p_dy_min)
+{
+    /* loop*/
+    OPJ_UINT32 pino;
+    /* tile coding parameter*/
+    opj_tcp_t *l_tcp = 00;
+    /* current poc being updated*/
+    opj_poc_t * l_current_poc = 00;
+    /* number of pocs*/
+    OPJ_UINT32 l_poc_bound;
+
+    /* preconditions in debug*/
+    assert(p_cp != 00);
+    assert(p_tileno < p_cp->tw * p_cp->th);
+
+    /* initializations*/
+    l_tcp = &p_cp->tcps [p_tileno];
+
+    /* number of iterations in the loop */
+    l_poc_bound = l_tcp->numpocs + 1;
+
+    /* start at first element, and to make sure the compiler will not make a calculation each time in the loop
+       store a pointer to the current element to modify rather than l_tcp->pocs[i]*/
+    l_current_poc = l_tcp->pocs;
+
+    for (pino = 0; pino < l_poc_bound ; ++pino) {
+        l_current_poc->compS = 0;
+        l_current_poc->compE = p_num_comps;/*p_image->numcomps;*/
+        l_current_poc->resS = 0;
+        l_current_poc->resE = p_max_res;
+        l_current_poc->layS = 0;
+        l_current_poc->layE = l_tcp->numlayers;
+        l_current_poc->prg  = l_tcp->prg;
+        l_current_poc->prcS = 0;
+        l_current_poc->prcE = p_max_prec;
+        l_current_poc->txS = p_tx0;
+        l_current_poc->txE = p_tx1;
+        l_current_poc->tyS = p_ty0;
+        l_current_poc->tyE = p_ty1;
+        l_current_poc->dx = p_dx_min;
+        l_current_poc->dy = p_dy_min;
+        ++ l_current_poc;
+    }
+}
+
+static void opj_pi_update_decode_poc(opj_pi_iterator_t * p_pi,
+                                     opj_tcp_t * p_tcp,
+                                     OPJ_UINT32 p_max_precision,
+                                     OPJ_UINT32 p_max_res)
+{
+    /* loop*/
+    OPJ_UINT32 pino;
+
+    /* encoding parameters to set*/
+    OPJ_UINT32 l_bound;
+
+    opj_pi_iterator_t * l_current_pi = 00;
+    opj_poc_t* l_current_poc = 0;
+
+    OPJ_ARG_NOT_USED(p_max_res);
+
+    /* preconditions in debug*/
+    assert(p_pi != 00);
+    assert(p_tcp != 00);
+
+    /* initializations*/
+    l_bound = p_tcp->numpocs + 1;
+    l_current_pi = p_pi;
+    l_current_poc = p_tcp->pocs;
+
+    for (pino = 0; pino < l_bound; ++pino) {
+        l_current_pi->poc.prg = l_current_poc->prg; /* Progression Order #0 */
+        l_current_pi->first = 1;
+
+        l_current_pi->poc.resno0 =
+            l_current_poc->resno0; /* Resolution Level Index #0 (Start) */
+        l_current_pi->poc.compno0 =
+            l_current_poc->compno0; /* Component Index #0 (Start) */
+        l_current_pi->poc.layno0 = 0;
+        l_current_pi->poc.precno0 = 0;
+        l_current_pi->poc.resno1 =
+            l_current_poc->resno1; /* Resolution Level Index #0 (End) */
+        l_current_pi->poc.compno1 =
+            l_current_poc->compno1; /* Component Index #0 (End) */
+        l_current_pi->poc.layno1 = opj_uint_min(l_current_poc->layno1,
+                                                p_tcp->numlayers); /* Layer Index #0 (End) */
+        l_current_pi->poc.precno1 = p_max_precision;
+        ++l_current_pi;
+        ++l_current_poc;
+    }
+}
+
+static void opj_pi_update_decode_not_poc(opj_pi_iterator_t * p_pi,
+        opj_tcp_t * p_tcp,
+        OPJ_UINT32 p_max_precision,
+        OPJ_UINT32 p_max_res)
+{
+    /* loop*/
+    OPJ_UINT32 pino;
+
+    /* encoding parameters to set*/
+    OPJ_UINT32 l_bound;
+
+    opj_pi_iterator_t * l_current_pi = 00;
+    /* preconditions in debug*/
+    assert(p_tcp != 00);
+    assert(p_pi != 00);
+
+    /* initializations*/
+    l_bound = p_tcp->numpocs + 1;
+    l_current_pi = p_pi;
+
+    for (pino = 0; pino < l_bound; ++pino) {
+        l_current_pi->poc.prg = p_tcp->prg;
+        l_current_pi->first = 1;
+        l_current_pi->poc.resno0 = 0;
+        l_current_pi->poc.compno0 = 0;
+        l_current_pi->poc.layno0 = 0;
+        l_current_pi->poc.precno0 = 0;
+        l_current_pi->poc.resno1 = p_max_res;
+        l_current_pi->poc.compno1 = l_current_pi->numcomps;
+        l_current_pi->poc.layno1 = p_tcp->numlayers;
+        l_current_pi->poc.precno1 = p_max_precision;
+        ++l_current_pi;
+    }
+}
+
+
+
+static OPJ_BOOL opj_pi_check_next_level(OPJ_INT32 pos,
+                                        opj_cp_t *cp,
+                                        OPJ_UINT32 tileno,
+                                        OPJ_UINT32 pino,
+                                        const OPJ_CHAR *prog)
+{
+    OPJ_INT32 i;
+    opj_tcp_t *tcps = &cp->tcps[tileno];
+    opj_poc_t *tcp = &tcps->pocs[pino];
+
+    if (pos >= 0) {
+        for (i = pos; i >= 0; i--) {
+            switch (prog[i]) {
+            case 'R':
+                if (tcp->res_t == tcp->resE) {
+                    if (opj_pi_check_next_level(pos - 1, cp, tileno, pino, prog)) {
+                        return OPJ_TRUE;
+                    } else {
+                        return OPJ_FALSE;
+                    }
+                } else {
+                    return OPJ_TRUE;
+                }
+                break;
+            case 'C':
+                if (tcp->comp_t == tcp->compE) {
+                    if (opj_pi_check_next_level(pos - 1, cp, tileno, pino, prog)) {
+                        return OPJ_TRUE;
+                    } else {
+                        return OPJ_FALSE;
+                    }
+                } else {
+                    return OPJ_TRUE;
+                }
+                break;
+            case 'L':
+                if (tcp->lay_t == tcp->layE) {
+                    if (opj_pi_check_next_level(pos - 1, cp, tileno, pino, prog)) {
+                        return OPJ_TRUE;
+                    } else {
+                        return OPJ_FALSE;
+                    }
+                } else {
+                    return OPJ_TRUE;
+                }
+                break;
+            case 'P':
+                switch (tcp->prg) {
+                case OPJ_LRCP: /* fall through */
+                case OPJ_RLCP:
+                    if (tcp->prc_t == tcp->prcE) {
+                        if (opj_pi_check_next_level(i - 1, cp, tileno, pino, prog)) {
+                            return OPJ_TRUE;
+                        } else {
+                            return OPJ_FALSE;
+                        }
+                    } else {
+                        return OPJ_TRUE;
+                    }
+                    break;
+                default:
+                    if (tcp->tx0_t == tcp->txE) {
+                        /*TY*/
+                        if (tcp->ty0_t == tcp->tyE) {
+                            if (opj_pi_check_next_level(i - 1, cp, tileno, pino, prog)) {
+                                return OPJ_TRUE;
+                            } else {
+                                return OPJ_FALSE;
+                            }
+                        } else {
+                            return OPJ_TRUE;
+                        }/*TY*/
+                    } else {
+                        return OPJ_TRUE;
+                    }
+                    break;
+                }/*end case P*/
+            }/*end switch*/
+        }/*end for*/
+    }/*end if*/
+    return OPJ_FALSE;
+}
+
+
+/*
+==========================================================
+   Packet iterator interface
+==========================================================
+*/
+opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image,
+                                        opj_cp_t *p_cp,
+                                        OPJ_UINT32 p_tile_no,
+                                        opj_event_mgr_t* manager)
+{
+    OPJ_UINT32 numcomps = p_image->numcomps;
+
+    /* loop */
+    OPJ_UINT32 pino;
+    OPJ_UINT32 compno, resno;
+
+    /* to store w, h, dx and dy for all components and resolutions */
+    OPJ_UINT32 * l_tmp_data;
+    OPJ_UINT32 ** l_tmp_ptr;
+
+    /* encoding parameters to set */
+    OPJ_UINT32 l_max_res;
+    OPJ_UINT32 l_max_prec;
+    OPJ_UINT32 l_tx0, l_tx1, l_ty0, l_ty1;
+    OPJ_UINT32 l_dx_min, l_dy_min;
+    OPJ_UINT32 l_bound;
+    OPJ_UINT32 l_step_p, l_step_c, l_step_r, l_step_l ;
+    OPJ_UINT32 l_data_stride;
+
+    /* pointers */
+    opj_pi_iterator_t *l_pi = 00;
+    opj_tcp_t *l_tcp = 00;
+    const opj_tccp_t *l_tccp = 00;
+    opj_pi_comp_t *l_current_comp = 00;
+    opj_image_comp_t * l_img_comp = 00;
+    opj_pi_iterator_t * l_current_pi = 00;
+    OPJ_UINT32 * l_encoding_value_ptr = 00;
+
+    /* preconditions in debug */
+    assert(p_cp != 00);
+    assert(p_image != 00);
+    assert(p_tile_no < p_cp->tw * p_cp->th);
+
+    /* initializations */
+    l_tcp = &p_cp->tcps[p_tile_no];
+    l_bound = l_tcp->numpocs + 1;
+
+    l_data_stride = 4 * OPJ_J2K_MAXRLVLS;
+    l_tmp_data = (OPJ_UINT32*)opj_malloc(
+                     l_data_stride * numcomps * sizeof(OPJ_UINT32));
+    if
+    (! l_tmp_data) {
+        return 00;
+    }
+    l_tmp_ptr = (OPJ_UINT32**)opj_malloc(
+                    numcomps * sizeof(OPJ_UINT32 *));
+    if
+    (! l_tmp_ptr) {
+        opj_free(l_tmp_data);
+        return 00;
+    }
+
+    /* memory allocation for pi */
+    l_pi = opj_pi_create(p_image, p_cp, p_tile_no, manager);
+    if (!l_pi) {
+        opj_free(l_tmp_data);
+        opj_free(l_tmp_ptr);
+        return 00;
+    }
+
+    l_encoding_value_ptr = l_tmp_data;
+    /* update pointer array */
+    for
+    (compno = 0; compno < numcomps; ++compno) {
+        l_tmp_ptr[compno] = l_encoding_value_ptr;
+        l_encoding_value_ptr += l_data_stride;
+    }
+    /* get encoding parameters */
+    opj_get_all_encoding_parameters(p_image, p_cp, p_tile_no, &l_tx0, &l_tx1,
+                                    &l_ty0, &l_ty1, &l_dx_min, &l_dy_min, &l_max_prec, &l_max_res, l_tmp_ptr);
+
+    /* step calculations */
+    l_step_p = 1;
+    l_step_c = l_max_prec * l_step_p;
+    l_step_r = numcomps * l_step_c;
+    l_step_l = l_max_res * l_step_r;
+
+    /* set values for first packet iterator */
+    l_current_pi = l_pi;
+
+    /* memory allocation for include */
+    /* prevent an integer overflow issue */
+    /* 0 < l_tcp->numlayers < 65536 c.f. opj_j2k_read_cod in j2k.c */
+    l_current_pi->include = 00;
+    if (l_step_l <= (UINT_MAX / (l_tcp->numlayers + 1U))) {
+        l_current_pi->include_size = (l_tcp->numlayers + 1U) * l_step_l;
+        l_current_pi->include = (OPJ_INT16*) opj_calloc(
+                                    l_current_pi->include_size, sizeof(OPJ_INT16));
+    }
+
+    if (!l_current_pi->include) {
+        opj_free(l_tmp_data);
+        opj_free(l_tmp_ptr);
+        opj_pi_destroy(l_pi, l_bound);
+        return 00;
+    }
+
+    /* special treatment for the first packet iterator */
+    l_current_comp = l_current_pi->comps;
+    l_img_comp = p_image->comps;
+    l_tccp = l_tcp->tccps;
+
+    l_current_pi->tx0 = l_tx0;
+    l_current_pi->ty0 = l_ty0;
+    l_current_pi->tx1 = l_tx1;
+    l_current_pi->ty1 = l_ty1;
+
+    /*l_current_pi->dx = l_img_comp->dx;*/
+    /*l_current_pi->dy = l_img_comp->dy;*/
+
+    l_current_pi->step_p = l_step_p;
+    l_current_pi->step_c = l_step_c;
+    l_current_pi->step_r = l_step_r;
+    l_current_pi->step_l = l_step_l;
+
+    /* allocation for components and number of components has already been calculated by opj_pi_create */
+    for
+    (compno = 0; compno < numcomps; ++compno) {
+        opj_pi_resolution_t *l_res = l_current_comp->resolutions;
+        l_encoding_value_ptr = l_tmp_ptr[compno];
+
+        l_current_comp->dx = l_img_comp->dx;
+        l_current_comp->dy = l_img_comp->dy;
+        /* resolutions have already been initialized */
+        for
+        (resno = 0; resno < l_current_comp->numresolutions; resno++) {
+            l_res->pdx = *(l_encoding_value_ptr++);
+            l_res->pdy = *(l_encoding_value_ptr++);
+            l_res->pw =  *(l_encoding_value_ptr++);
+            l_res->ph =  *(l_encoding_value_ptr++);
+            ++l_res;
+        }
+        ++l_current_comp;
+        ++l_img_comp;
+        ++l_tccp;
+    }
+    ++l_current_pi;
+
+    for (pino = 1 ; pino < l_bound ; ++pino) {
+        l_current_comp = l_current_pi->comps;
+        l_img_comp = p_image->comps;
+        l_tccp = l_tcp->tccps;
+
+        l_current_pi->tx0 = l_tx0;
+        l_current_pi->ty0 = l_ty0;
+        l_current_pi->tx1 = l_tx1;
+        l_current_pi->ty1 = l_ty1;
+        /*l_current_pi->dx = l_dx_min;*/
+        /*l_current_pi->dy = l_dy_min;*/
+        l_current_pi->step_p = l_step_p;
+        l_current_pi->step_c = l_step_c;
+        l_current_pi->step_r = l_step_r;
+        l_current_pi->step_l = l_step_l;
+
+        /* allocation for components and number of components has already been calculated by opj_pi_create */
+        for
+        (compno = 0; compno < numcomps; ++compno) {
+            opj_pi_resolution_t *l_res = l_current_comp->resolutions;
+            l_encoding_value_ptr = l_tmp_ptr[compno];
+
+            l_current_comp->dx = l_img_comp->dx;
+            l_current_comp->dy = l_img_comp->dy;
+            /* resolutions have already been initialized */
+            for
+            (resno = 0; resno < l_current_comp->numresolutions; resno++) {
+                l_res->pdx = *(l_encoding_value_ptr++);
+                l_res->pdy = *(l_encoding_value_ptr++);
+                l_res->pw =  *(l_encoding_value_ptr++);
+                l_res->ph =  *(l_encoding_value_ptr++);
+                ++l_res;
+            }
+            ++l_current_comp;
+            ++l_img_comp;
+            ++l_tccp;
+        }
+        /* special treatment*/
+        l_current_pi->include = (l_current_pi - 1)->include;
+        l_current_pi->include_size = (l_current_pi - 1)->include_size;
+        ++l_current_pi;
+    }
+    opj_free(l_tmp_data);
+    l_tmp_data = 00;
+    opj_free(l_tmp_ptr);
+    l_tmp_ptr = 00;
+    if
+    (l_tcp->POC) {
+        opj_pi_update_decode_poc(l_pi, l_tcp, l_max_prec, l_max_res);
+    } else {
+        opj_pi_update_decode_not_poc(l_pi, l_tcp, l_max_prec, l_max_res);
+    }
+    return l_pi;
+}
+
+
+OPJ_UINT32 opj_get_encoding_packet_count(const opj_image_t *p_image,
+        const opj_cp_t *p_cp,
+        OPJ_UINT32 p_tile_no)
+{
+    OPJ_UINT32 l_max_res;
+    OPJ_UINT32 l_max_prec;
+    OPJ_UINT32 l_tx0, l_tx1, l_ty0, l_ty1;
+    OPJ_UINT32 l_dx_min, l_dy_min;
+
+    /* preconditions in debug*/
+    assert(p_cp != 00);
+    assert(p_image != 00);
+    assert(p_tile_no < p_cp->tw * p_cp->th);
+
+    /* get encoding parameters*/
+    opj_get_all_encoding_parameters(p_image, p_cp, p_tile_no, &l_tx0, &l_tx1,
+                                    &l_ty0, &l_ty1, &l_dx_min, &l_dy_min, &l_max_prec, &l_max_res, NULL);
+
+    return p_cp->tcps[p_tile_no].numlayers * l_max_prec * p_image->numcomps *
+           l_max_res;
+}
+
+
+opj_pi_iterator_t *opj_pi_initialise_encode(const opj_image_t *p_image,
+        opj_cp_t *p_cp,
+        OPJ_UINT32 p_tile_no,
+        J2K_T2_MODE p_t2_mode,
+        opj_event_mgr_t* manager)
+{
+    OPJ_UINT32 numcomps = p_image->numcomps;
+
+    /* loop*/
+    OPJ_UINT32 pino;
+    OPJ_UINT32 compno, resno;
+
+    /* to store w, h, dx and dy for all components and resolutions*/
+    OPJ_UINT32 * l_tmp_data;
+    OPJ_UINT32 ** l_tmp_ptr;
+
+    /* encoding parameters to set*/
+    OPJ_UINT32 l_max_res;
+    OPJ_UINT32 l_max_prec;
+    OPJ_UINT32 l_tx0, l_tx1, l_ty0, l_ty1;
+    OPJ_UINT32 l_dx_min, l_dy_min;
+    OPJ_UINT32 l_bound;
+    OPJ_UINT32 l_step_p, l_step_c, l_step_r, l_step_l ;
+    OPJ_UINT32 l_data_stride;
+
+    /* pointers*/
+    opj_pi_iterator_t *l_pi = 00;
+    opj_tcp_t *l_tcp = 00;
+    const opj_tccp_t *l_tccp = 00;
+    opj_pi_comp_t *l_current_comp = 00;
+    opj_image_comp_t * l_img_comp = 00;
+    opj_pi_iterator_t * l_current_pi = 00;
+    OPJ_UINT32 * l_encoding_value_ptr = 00;
+
+    /* preconditions in debug*/
+    assert(p_cp != 00);
+    assert(p_image != 00);
+    assert(p_tile_no < p_cp->tw * p_cp->th);
+
+    /* initializations*/
+    l_tcp = &p_cp->tcps[p_tile_no];
+    l_bound = l_tcp->numpocs + 1;
+
+    l_data_stride = 4 * OPJ_J2K_MAXRLVLS;
+    l_tmp_data = (OPJ_UINT32*)opj_malloc(
+                     l_data_stride * numcomps * sizeof(OPJ_UINT32));
+    if (! l_tmp_data) {
+        return 00;
+    }
+
+    l_tmp_ptr = (OPJ_UINT32**)opj_malloc(
+                    numcomps * sizeof(OPJ_UINT32 *));
+    if (! l_tmp_ptr) {
+        opj_free(l_tmp_data);
+        return 00;
+    }
+
+    /* memory allocation for pi*/
+    l_pi = opj_pi_create(p_image, p_cp, p_tile_no, manager);
+    if (!l_pi) {
+        opj_free(l_tmp_data);
+        opj_free(l_tmp_ptr);
+        return 00;
+    }
+
+    l_encoding_value_ptr = l_tmp_data;
+    /* update pointer array*/
+    for (compno = 0; compno < numcomps; ++compno) {
+        l_tmp_ptr[compno] = l_encoding_value_ptr;
+        l_encoding_value_ptr += l_data_stride;
+    }
+
+    /* get encoding parameters*/
+    opj_get_all_encoding_parameters(p_image, p_cp, p_tile_no, &l_tx0, &l_tx1,
+                                    &l_ty0, &l_ty1, &l_dx_min, &l_dy_min, &l_max_prec, &l_max_res, l_tmp_ptr);
+
+    /* step calculations*/
+    l_step_p = 1;
+    l_step_c = l_max_prec * l_step_p;
+    l_step_r = numcomps * l_step_c;
+    l_step_l = l_max_res * l_step_r;
+
+    /* set values for first packet iterator*/
+    l_pi->tp_on = (OPJ_BYTE)p_cp->m_specific_param.m_enc.m_tp_on;
+    l_current_pi = l_pi;
+
+    /* memory allocation for include*/
+    l_current_pi->include_size = l_tcp->numlayers * l_step_l;
+    l_current_pi->include = (OPJ_INT16*) opj_calloc(l_current_pi->include_size,
+                            sizeof(OPJ_INT16));
+    if (!l_current_pi->include) {
+        opj_free(l_tmp_data);
+        opj_free(l_tmp_ptr);
+        opj_pi_destroy(l_pi, l_bound);
+        return 00;
+    }
+
+    /* special treatment for the first packet iterator*/
+    l_current_comp = l_current_pi->comps;
+    l_img_comp = p_image->comps;
+    l_tccp = l_tcp->tccps;
+    l_current_pi->tx0 = l_tx0;
+    l_current_pi->ty0 = l_ty0;
+    l_current_pi->tx1 = l_tx1;
+    l_current_pi->ty1 = l_ty1;
+    l_current_pi->dx = l_dx_min;
+    l_current_pi->dy = l_dy_min;
+    l_current_pi->step_p = l_step_p;
+    l_current_pi->step_c = l_step_c;
+    l_current_pi->step_r = l_step_r;
+    l_current_pi->step_l = l_step_l;
+
+    /* allocation for components and number of components has already been calculated by opj_pi_create */
+    for (compno = 0; compno < numcomps; ++compno) {
+        opj_pi_resolution_t *l_res = l_current_comp->resolutions;
+        l_encoding_value_ptr = l_tmp_ptr[compno];
+
+        l_current_comp->dx = l_img_comp->dx;
+        l_current_comp->dy = l_img_comp->dy;
+
+        /* resolutions have already been initialized */
+        for (resno = 0; resno < l_current_comp->numresolutions; resno++) {
+            l_res->pdx = *(l_encoding_value_ptr++);
+            l_res->pdy = *(l_encoding_value_ptr++);
+            l_res->pw =  *(l_encoding_value_ptr++);
+            l_res->ph =  *(l_encoding_value_ptr++);
+            ++l_res;
+        }
+
+        ++l_current_comp;
+        ++l_img_comp;
+        ++l_tccp;
+    }
+    ++l_current_pi;
+
+    for (pino = 1 ; pino < l_bound ; ++pino) {
+        l_current_comp = l_current_pi->comps;
+        l_img_comp = p_image->comps;
+        l_tccp = l_tcp->tccps;
+
+        l_current_pi->tx0 = l_tx0;
+        l_current_pi->ty0 = l_ty0;
+        l_current_pi->tx1 = l_tx1;
+        l_current_pi->ty1 = l_ty1;
+        l_current_pi->dx = l_dx_min;
+        l_current_pi->dy = l_dy_min;
+        l_current_pi->step_p = l_step_p;
+        l_current_pi->step_c = l_step_c;
+        l_current_pi->step_r = l_step_r;
+        l_current_pi->step_l = l_step_l;
+
+        /* allocation for components and number of components has already been calculated by opj_pi_create */
+        for (compno = 0; compno < numcomps; ++compno) {
+            opj_pi_resolution_t *l_res = l_current_comp->resolutions;
+            l_encoding_value_ptr = l_tmp_ptr[compno];
+
+            l_current_comp->dx = l_img_comp->dx;
+            l_current_comp->dy = l_img_comp->dy;
+            /* resolutions have already been initialized */
+            for (resno = 0; resno < l_current_comp->numresolutions; resno++) {
+                l_res->pdx = *(l_encoding_value_ptr++);
+                l_res->pdy = *(l_encoding_value_ptr++);
+                l_res->pw =  *(l_encoding_value_ptr++);
+                l_res->ph =  *(l_encoding_value_ptr++);
+                ++l_res;
+            }
+            ++l_current_comp;
+            ++l_img_comp;
+            ++l_tccp;
+        }
+
+        /* special treatment*/
+        l_current_pi->include = (l_current_pi - 1)->include;
+        l_current_pi->include_size = (l_current_pi - 1)->include_size;
+        ++l_current_pi;
+    }
+
+    opj_free(l_tmp_data);
+    l_tmp_data = 00;
+    opj_free(l_tmp_ptr);
+    l_tmp_ptr = 00;
+
+    if (l_tcp->POC && (OPJ_IS_CINEMA(p_cp->rsiz) || p_t2_mode == FINAL_PASS)) {
+        opj_pi_update_encode_poc_and_final(p_cp, p_tile_no, l_tx0, l_tx1, l_ty0, l_ty1,
+                                           l_max_prec, l_max_res, l_dx_min, l_dy_min);
+    } else {
+        opj_pi_update_encode_not_poc(p_cp, numcomps, p_tile_no, l_tx0, l_tx1,
+                                     l_ty0, l_ty1, l_max_prec, l_max_res, l_dx_min, l_dy_min);
+    }
+
+    return l_pi;
+}
+
+void opj_pi_create_encode(opj_pi_iterator_t *pi,
+                          opj_cp_t *cp,
+                          OPJ_UINT32 tileno,
+                          OPJ_UINT32 pino,
+                          OPJ_UINT32 tpnum,
+                          OPJ_INT32 tppos,
+                          J2K_T2_MODE t2_mode)
+{
+    const OPJ_CHAR *prog;
+    OPJ_INT32 i;
+    OPJ_UINT32 incr_top = 1, resetX = 0;
+    opj_tcp_t *tcps = &cp->tcps[tileno];
+    opj_poc_t *tcp = &tcps->pocs[pino];
+
+    prog = opj_j2k_convert_progression_order(tcp->prg);
+
+    pi[pino].first = 1;
+    pi[pino].poc.prg = tcp->prg;
+
+    if (!(cp->m_specific_param.m_enc.m_tp_on && ((!OPJ_IS_CINEMA(cp->rsiz) &&
+            !OPJ_IS_IMF(cp->rsiz) &&
+            (t2_mode == FINAL_PASS)) || OPJ_IS_CINEMA(cp->rsiz) || OPJ_IS_IMF(cp->rsiz)))) {
+        pi[pino].poc.resno0 = tcp->resS;
+        pi[pino].poc.resno1 = tcp->resE;
+        pi[pino].poc.compno0 = tcp->compS;
+        pi[pino].poc.compno1 = tcp->compE;
+        pi[pino].poc.layno0 = tcp->layS;
+        pi[pino].poc.layno1 = tcp->layE;
+        pi[pino].poc.precno0 = tcp->prcS;
+        pi[pino].poc.precno1 = tcp->prcE;
+        pi[pino].poc.tx0 = tcp->txS;
+        pi[pino].poc.ty0 = tcp->tyS;
+        pi[pino].poc.tx1 = tcp->txE;
+        pi[pino].poc.ty1 = tcp->tyE;
+    } else {
+        for (i = tppos + 1; i < 4; i++) {
+            switch (prog[i]) {
+            case 'R':
+                pi[pino].poc.resno0 = tcp->resS;
+                pi[pino].poc.resno1 = tcp->resE;
+                break;
+            case 'C':
+                pi[pino].poc.compno0 = tcp->compS;
+                pi[pino].poc.compno1 = tcp->compE;
+                break;
+            case 'L':
+                pi[pino].poc.layno0 = tcp->layS;
+                pi[pino].poc.layno1 = tcp->layE;
+                break;
+            case 'P':
+                switch (tcp->prg) {
+                case OPJ_LRCP:
+                case OPJ_RLCP:
+                    pi[pino].poc.precno0 = tcp->prcS;
+                    pi[pino].poc.precno1 = tcp->prcE;
+                    break;
+                default:
+                    pi[pino].poc.tx0 = tcp->txS;
+                    pi[pino].poc.ty0 = tcp->tyS;
+                    pi[pino].poc.tx1 = tcp->txE;
+                    pi[pino].poc.ty1 = tcp->tyE;
+                    break;
+                }
+                break;
+            }
+        }
+
+        if (tpnum == 0) {
+            for (i = tppos; i >= 0; i--) {
+                switch (prog[i]) {
+                case 'C':
+                    tcp->comp_t = tcp->compS;
+                    pi[pino].poc.compno0 = tcp->comp_t;
+                    pi[pino].poc.compno1 = tcp->comp_t + 1;
+                    tcp->comp_t += 1;
+                    break;
+                case 'R':
+                    tcp->res_t = tcp->resS;
+                    pi[pino].poc.resno0 = tcp->res_t;
+                    pi[pino].poc.resno1 = tcp->res_t + 1;
+                    tcp->res_t += 1;
+                    break;
+                case 'L':
+                    tcp->lay_t = tcp->layS;
+                    pi[pino].poc.layno0 = tcp->lay_t;
+                    pi[pino].poc.layno1 = tcp->lay_t + 1;
+                    tcp->lay_t += 1;
+                    break;
+                case 'P':
+                    switch (tcp->prg) {
+                    case OPJ_LRCP:
+                    case OPJ_RLCP:
+                        tcp->prc_t = tcp->prcS;
+                        pi[pino].poc.precno0 = tcp->prc_t;
+                        pi[pino].poc.precno1 = tcp->prc_t + 1;
+                        tcp->prc_t += 1;
+                        break;
+                    default:
+                        tcp->tx0_t = tcp->txS;
+                        tcp->ty0_t = tcp->tyS;
+                        pi[pino].poc.tx0 = tcp->tx0_t;
+                        pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx - (tcp->tx0_t % tcp->dx);
+                        pi[pino].poc.ty0 = tcp->ty0_t;
+                        pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
+                        tcp->tx0_t = (OPJ_UINT32)pi[pino].poc.tx1;
+                        tcp->ty0_t = (OPJ_UINT32)pi[pino].poc.ty1;
+                        break;
+                    }
+                    break;
+                }
+            }
+            incr_top = 1;
+        } else {
+            for (i = tppos; i >= 0; i--) {
+                switch (prog[i]) {
+                case 'C':
+                    pi[pino].poc.compno0 = tcp->comp_t - 1;
+                    pi[pino].poc.compno1 = tcp->comp_t;
+                    break;
+                case 'R':
+                    pi[pino].poc.resno0 = tcp->res_t - 1;
+                    pi[pino].poc.resno1 = tcp->res_t;
+                    break;
+                case 'L':
+                    pi[pino].poc.layno0 = tcp->lay_t - 1;
+                    pi[pino].poc.layno1 = tcp->lay_t;
+                    break;
+                case 'P':
+                    switch (tcp->prg) {
+                    case OPJ_LRCP:
+                    case OPJ_RLCP:
+                        pi[pino].poc.precno0 = tcp->prc_t - 1;
+                        pi[pino].poc.precno1 = tcp->prc_t;
+                        break;
+                    default:
+                        pi[pino].poc.tx0 = tcp->tx0_t - tcp->dx - (tcp->tx0_t % tcp->dx);
+                        pi[pino].poc.tx1 = tcp->tx0_t ;
+                        pi[pino].poc.ty0 = tcp->ty0_t - tcp->dy - (tcp->ty0_t % tcp->dy);
+                        pi[pino].poc.ty1 = tcp->ty0_t ;
+                        break;
+                    }
+                    break;
+                }
+                if (incr_top == 1) {
+                    switch (prog[i]) {
+                    case 'R':
+                        if (tcp->res_t == tcp->resE) {
+                            if (opj_pi_check_next_level(i - 1, cp, tileno, pino, prog)) {
+                                tcp->res_t = tcp->resS;
+                                pi[pino].poc.resno0 = tcp->res_t;
+                                pi[pino].poc.resno1 = tcp->res_t + 1;
+                                tcp->res_t += 1;
+                                incr_top = 1;
+                            } else {
+                                incr_top = 0;
+                            }
+                        } else {
+                            pi[pino].poc.resno0 = tcp->res_t;
+                            pi[pino].poc.resno1 = tcp->res_t + 1;
+                            tcp->res_t += 1;
+                            incr_top = 0;
+                        }
+                        break;
+                    case 'C':
+                        if (tcp->comp_t == tcp->compE) {
+                            if (opj_pi_check_next_level(i - 1, cp, tileno, pino, prog)) {
+                                tcp->comp_t = tcp->compS;
+                                pi[pino].poc.compno0 = tcp->comp_t;
+                                pi[pino].poc.compno1 = tcp->comp_t + 1;
+                                tcp->comp_t += 1;
+                                incr_top = 1;
+                            } else {
+                                incr_top = 0;
+                            }
+                        } else {
+                            pi[pino].poc.compno0 = tcp->comp_t;
+                            pi[pino].poc.compno1 = tcp->comp_t + 1;
+                            tcp->comp_t += 1;
+                            incr_top = 0;
+                        }
+                        break;
+                    case 'L':
+                        if (tcp->lay_t == tcp->layE) {
+                            if (opj_pi_check_next_level(i - 1, cp, tileno, pino, prog)) {
+                                tcp->lay_t = tcp->layS;
+                                pi[pino].poc.layno0 = tcp->lay_t;
+                                pi[pino].poc.layno1 = tcp->lay_t + 1;
+                                tcp->lay_t += 1;
+                                incr_top = 1;
+                            } else {
+                                incr_top = 0;
+                            }
+                        } else {
+                            pi[pino].poc.layno0 = tcp->lay_t;
+                            pi[pino].poc.layno1 = tcp->lay_t + 1;
+                            tcp->lay_t += 1;
+                            incr_top = 0;
+                        }
+                        break;
+                    case 'P':
+                        switch (tcp->prg) {
+                        case OPJ_LRCP:
+                        case OPJ_RLCP:
+                            if (tcp->prc_t == tcp->prcE) {
+                                if (opj_pi_check_next_level(i - 1, cp, tileno, pino, prog)) {
+                                    tcp->prc_t = tcp->prcS;
+                                    pi[pino].poc.precno0 = tcp->prc_t;
+                                    pi[pino].poc.precno1 = tcp->prc_t + 1;
+                                    tcp->prc_t += 1;
+                                    incr_top = 1;
+                                } else {
+                                    incr_top = 0;
+                                }
+                            } else {
+                                pi[pino].poc.precno0 = tcp->prc_t;
+                                pi[pino].poc.precno1 = tcp->prc_t + 1;
+                                tcp->prc_t += 1;
+                                incr_top = 0;
+                            }
+                            break;
+                        default:
+                            if (tcp->tx0_t >= tcp->txE) {
+                                if (tcp->ty0_t >= tcp->tyE) {
+                                    if (opj_pi_check_next_level(i - 1, cp, tileno, pino, prog)) {
+                                        tcp->ty0_t = tcp->tyS;
+                                        pi[pino].poc.ty0 = tcp->ty0_t;
+                                        pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
+                                        tcp->ty0_t = (OPJ_UINT32)pi[pino].poc.ty1;
+                                        incr_top = 1;
+                                        resetX = 1;
+                                    } else {
+                                        incr_top = 0;
+                                        resetX = 0;
+                                    }
+                                } else {
+                                    pi[pino].poc.ty0 = tcp->ty0_t;
+                                    pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
+                                    tcp->ty0_t = (OPJ_UINT32)pi[pino].poc.ty1;
+                                    incr_top = 0;
+                                    resetX = 1;
+                                }
+                                if (resetX == 1) {
+                                    tcp->tx0_t = tcp->txS;
+                                    pi[pino].poc.tx0 = tcp->tx0_t;
+                                    pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx - (tcp->tx0_t % tcp->dx);
+                                    tcp->tx0_t = (OPJ_UINT32)pi[pino].poc.tx1;
+                                }
+                            } else {
+                                pi[pino].poc.tx0 = tcp->tx0_t;
+                                pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx - (tcp->tx0_t % tcp->dx);
+                                tcp->tx0_t = (OPJ_UINT32)pi[pino].poc.tx1;
+                                incr_top = 0;
+                            }
+                            break;
+                        }
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+
+void opj_pi_destroy(opj_pi_iterator_t *p_pi,
+                    OPJ_UINT32 p_nb_elements)
+{
+    OPJ_UINT32 compno, pino;
+    opj_pi_iterator_t *l_current_pi = p_pi;
+    if (p_pi) {
+        if (p_pi->include) {
+            opj_free(p_pi->include);
+            p_pi->include = 00;
+        }
+        for (pino = 0; pino < p_nb_elements; ++pino) {
+            if (l_current_pi->comps) {
+                opj_pi_comp_t *l_current_component = l_current_pi->comps;
+                for (compno = 0; compno < l_current_pi->numcomps; compno++) {
+                    if (l_current_component->resolutions) {
+                        opj_free(l_current_component->resolutions);
+                        l_current_component->resolutions = 00;
+                    }
+
+                    ++l_current_component;
+                }
+                opj_free(l_current_pi->comps);
+                l_current_pi->comps = 0;
+            }
+            ++l_current_pi;
+        }
+        opj_free(p_pi);
+    }
+}
+
+
+
+void opj_pi_update_encoding_parameters(const opj_image_t *p_image,
+                                       opj_cp_t *p_cp,
+                                       OPJ_UINT32 p_tile_no)
+{
+    /* encoding parameters to set */
+    OPJ_UINT32 l_max_res;
+    OPJ_UINT32 l_max_prec;
+    OPJ_UINT32 l_tx0, l_tx1, l_ty0, l_ty1;
+    OPJ_UINT32 l_dx_min, l_dy_min;
+
+    /* pointers */
+    opj_tcp_t *l_tcp = 00;
+
+    /* preconditions */
+    assert(p_cp != 00);
+    assert(p_image != 00);
+    assert(p_tile_no < p_cp->tw * p_cp->th);
+
+    l_tcp = &(p_cp->tcps[p_tile_no]);
+
+    /* get encoding parameters */
+    opj_get_encoding_parameters(p_image, p_cp, p_tile_no, &l_tx0, &l_tx1, &l_ty0,
+                                &l_ty1, &l_dx_min, &l_dy_min, &l_max_prec, &l_max_res);
+
+    if (l_tcp->POC) {
+        opj_pi_update_encode_poc_and_final(p_cp, p_tile_no, l_tx0, l_tx1, l_ty0, l_ty1,
+                                           l_max_prec, l_max_res, l_dx_min, l_dy_min);
+    } else {
+        opj_pi_update_encode_not_poc(p_cp, p_image->numcomps, p_tile_no, l_tx0, l_tx1,
+                                     l_ty0, l_ty1, l_max_prec, l_max_res, l_dx_min, l_dy_min);
+    }
+}
+
+OPJ_BOOL opj_pi_next(opj_pi_iterator_t * pi)
+{
+    switch (pi->poc.prg) {
+    case OPJ_LRCP:
+        return opj_pi_next_lrcp(pi);
+    case OPJ_RLCP:
+        return opj_pi_next_rlcp(pi);
+    case OPJ_RPCL:
+        return opj_pi_next_rpcl(pi);
+    case OPJ_PCRL:
+        return opj_pi_next_pcrl(pi);
+    case OPJ_CPRL:
+        return opj_pi_next_cprl(pi);
+    case OPJ_PROG_UNKNOWN:
+        return OPJ_FALSE;
+    }
+
+    return OPJ_FALSE;
+}