openjpeg/libopenjpeg/pi.c

/*
 * 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) 2006-2007, Parvatha Elangovan
 * 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 "pi.h"
#include "int.h"
#include "opj_malloc.h"
#include "j2k.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 bool 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 bool 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 bool 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 bool 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 bool 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	dx_min		the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min		the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_poc_and_final (
									 opj_cp_t *p_cp,
									 OPJ_UINT32 p_tileno,
									 OPJ_INT32 p_tx0, 
									 OPJ_INT32 p_tx1, 
									 OPJ_INT32 p_ty0, 
									 OPJ_INT32 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_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	dx_min		the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min		the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_not_poc ( 
								opj_cp_t *p_cp,
								OPJ_UINT32 p_num_comps,
								OPJ_UINT32 p_tileno,
								OPJ_INT32 p_tx0, 
								OPJ_INT32 p_tx1, 
								OPJ_INT32 p_ty0, 
								OPJ_INT32 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 the maximum precision for all the bands of the tile
 * @param	p_max_res		pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param	dx_min			pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min			pointer that will hold the the minimum dy of all the components of all the resolutions for the tile.
 */
void get_encoding_parameters(
								const opj_image_t *p_image,
								const opj_cp_t *p_cp, 
								OPJ_UINT32  tileno,
								OPJ_INT32  * p_tx0,
								OPJ_INT32 * p_tx1,
								OPJ_INT32 * p_ty0,
								OPJ_INT32 * 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 the maximum precision for all the bands of the tile
 * @param	p_max_res		pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param	dx_min			pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min			pointer that will hold the 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.
 */
void get_all_encoding_parameters(
								const opj_image_t *p_image,
								const opj_cp_t *p_cp, 
								OPJ_UINT32 tileno,
								OPJ_INT32 * p_tx0,
								OPJ_INT32 * p_tx1,
								OPJ_INT32 * p_ty0,
								OPJ_INT32 * 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	p_tile_no	the index of the tile from which creating the packet iterator.
 */
opj_pi_iterator_t * pi_create(
								const opj_image_t *image,
								const opj_cp_t *cp, 
								OPJ_UINT32 tileno
							);
void 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);
void 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);


/*@}*/

/*@}*/

/* 
==========================================================
   local functions
==========================================================
*/

static bool pi_next_lrcp(opj_pi_iterator_t * pi) {
	opj_pi_comp_t *comp = 00;
	opj_pi_resolution_t *res = 00;
	OPJ_UINT32 index = 0;
	
	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;
					if (!pi->include[index]) {
						pi->include[index] = 1;
						return true;
					}
LABEL_SKIP:;
				}
			}
		}
	}
	
	return false;
}

static bool pi_next_rlcp(opj_pi_iterator_t * pi) {
	opj_pi_comp_t *comp = 00;
	opj_pi_resolution_t *res = 00;
	OPJ_UINT32 index = 0;

	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 (!pi->include[index]) {
						pi->include[index] = 1;
						return true;
					}
LABEL_SKIP:;
				}
			}
		}
	}
	
	return false;
}

static bool pi_next_rpcl(opj_pi_iterator_t * pi) {
	opj_pi_comp_t *comp = 00;
	opj_pi_resolution_t *res = 00;
	OPJ_UINT32 index = 0;

	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];
				dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
				dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
				pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
				pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
			}
		}
	}
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 = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
			for (pi->x = pi->poc.tx0; pi->x < 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_INT32 trx0, try0;
					OPJ_INT32  trx1, try1;
					OPJ_UINT32  rpx, rpy;
					OPJ_INT32  prci, prcj;
					comp = &pi->comps[pi->compno];
					if (pi->resno >= comp->numresolutions) {
						continue;
					}
					res = &comp->resolutions[pi->resno];
					levelno = comp->numresolutions - 1 - pi->resno;
					trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
					try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
					trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
					try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
					rpx = res->pdx + levelno;
					rpy = res->pdy + levelno;
					if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpy))))){
						continue;	
					}
					if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
						continue; 
					}
					
					if ((res->pw==0)||(res->ph==0)) continue;
					
					if ((trx0==trx1)||(try0==try1)) continue;
					
					prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx) 
						 - int_floordivpow2(trx0, res->pdx);
					prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy) 
						 - int_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 (!pi->include[index]) {
							pi->include[index] = 1;
							return true;
						}
LABEL_SKIP:;
					}
				}
			}
		}
	}
	
	return false;
}

static bool pi_next_pcrl(opj_pi_iterator_t * pi) {
	opj_pi_comp_t *comp = 00;
	opj_pi_resolution_t *res = 00;
	OPJ_UINT32 index = 0;

	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];
				dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
				dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
				pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
				pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
			}
		}
	}
	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 = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
		for (pi->x = pi->poc.tx0; pi->x < 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];
				// TODO
				for (pi->resno = pi->poc.resno0; pi->resno < uint_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
					OPJ_UINT32 levelno;
					OPJ_INT32 trx0, try0;
					OPJ_INT32 trx1, try1;
					OPJ_UINT32 rpx, rpy;
					OPJ_INT32 prci, prcj;
					res = &comp->resolutions[pi->resno];
					levelno = comp->numresolutions - 1 - pi->resno;
					trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
					try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
					trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
					try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
					rpx = res->pdx + levelno;
					rpy = res->pdy + levelno;
					if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpy))))){
						continue;	
					}
					if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
						continue; 
					}
					
					if ((res->pw==0)||(res->ph==0)) continue;
					
					if ((trx0==trx1)||(try0==try1)) continue;
					
					prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx) 
						 - int_floordivpow2(trx0, res->pdx);
					prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy) 
						 - int_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 (!pi->include[index]) {
							pi->include[index] = 1;
							return true;
						}	
LABEL_SKIP:;
					}
				}
			}
		}
	}
	
	return false;
}

static bool pi_next_cprl(opj_pi_iterator_t * pi) {
	opj_pi_comp_t *comp = 00;
	opj_pi_resolution_t *res = 00;
	OPJ_UINT32 index = 0;

	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];
			dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
			dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
			pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
			pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
		}
		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 = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
			for (pi->x = pi->poc.tx0; pi->x < pi->poc.tx1; pi->x += pi->dx - (pi->x % pi->dx)) {
				// TODO
				for (pi->resno = pi->poc.resno0; pi->resno < uint_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
					OPJ_UINT32 levelno;
					OPJ_INT32 trx0, try0;
					OPJ_INT32 trx1, try1;
					OPJ_UINT32 rpx, rpy;
					OPJ_INT32 prci, prcj;
					res = &comp->resolutions[pi->resno];
					levelno = comp->numresolutions - 1 - pi->resno;
					trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
					try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
					trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
					try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
					rpx = res->pdx + levelno;
					rpy = res->pdy + levelno;
					if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpy))))){
						continue;	
					}
					if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
						continue; 
					}
					
					if ((res->pw==0)||(res->ph==0)) continue;
					
					if ((trx0==trx1)||(try0==try1)) continue;
					
					prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx) 
						 - int_floordivpow2(trx0, res->pdx);
					prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy) 
						 - int_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 (!pi->include[index]) {
							pi->include[index] = 1;
							return true;
						}
LABEL_SKIP:;
					}
				}
			}
		}
	}
	
	return false;
}

/* 
==========================================================
   Packet iterator interface
==========================================================
*/
opj_pi_iterator_t *pi_create_decode(
										opj_image_t *p_image, 
										opj_cp_t *p_cp, 
										OPJ_UINT32 p_tile_no
										)
{ 
	// loop
	OPJ_UINT32 pino;
	OPJ_UINT32 compno, resno;
	
	// to store w, h, dx and dy fro all components and resolutions
	OPJ_UINT32 * l_tmp_data;
	OPJ_UINT32 ** l_tmp_ptr;
	
	// encoding prameters to set
	OPJ_UINT32 l_max_res;
	OPJ_UINT32 l_max_prec;
	OPJ_INT32 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 * J2K_MAXRLVLS;
	l_tmp_data = (OPJ_UINT32*)opj_malloc(
		l_data_stride * p_image->numcomps * sizeof(OPJ_UINT32));
	if
		(! l_tmp_data)
	{
		return 00;
	}
	l_tmp_ptr = (OPJ_UINT32**)opj_malloc(
		p_image->numcomps * sizeof(OPJ_UINT32 *));
	if
		(! l_tmp_ptr)
	{
		opj_free(l_tmp_data);
		return 00;
	}

	// memory allocation for pi
	l_pi = pi_create(p_image,p_cp,p_tile_no);
	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 < p_image->numcomps; ++compno)
	{
		l_tmp_ptr[compno] = l_encoding_value_ptr;
		l_encoding_value_ptr += l_data_stride;
	}
	// get encoding parameters
	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 = p_image->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
	l_current_pi->include = (OPJ_INT16*) opj_calloc(l_tcp->numlayers * l_step_l, sizeof(OPJ_INT16));
	if
		(!l_current_pi->include) 
	{
		opj_free(l_tmp_data);
		opj_free(l_tmp_ptr);
		pi_destroy(l_pi, l_bound);
		return 00;
	}
	memset(l_current_pi->include,0,l_tcp->numlayers * l_step_l* sizeof(OPJ_INT16));
	
	// 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 pi_create */
	for 
		(compno = 0; compno < l_current_pi->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 )
	{
		opj_pi_comp_t *l_current_comp = l_current_pi->comps;
		opj_image_comp_t * 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 pi_create */
		for 
			(compno = 0; compno < l_current_pi->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;
	}
	opj_free(l_tmp_data);
	l_tmp_data = 00;
	opj_free(l_tmp_ptr);
	l_tmp_ptr = 00;
	if
		(l_tcp->POC)
	{
		pi_update_decode_poc (l_pi,l_tcp,l_max_prec,l_max_res);
	}
	else
	{
		pi_update_decode_not_poc(l_pi,l_tcp,l_max_prec,l_max_res);
	}
	return l_pi;
}

void 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 prameters to set
	OPJ_UINT32 l_bound;

	opj_pi_iterator_t * l_current_pi = 00;
	opj_poc_t* l_current_poc = 0;
	
	// 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;
		l_current_pi->first = 1;

		l_current_pi->poc.resno0 = l_current_poc->resno0;
		l_current_pi->poc.compno0 = l_current_poc->compno0;
		l_current_pi->poc.layno0 = 0;
		l_current_pi->poc.precno0 = 0;
		l_current_pi->poc.resno1 = l_current_poc->resno1;
		l_current_pi->poc.compno1 = l_current_poc->compno1;
		l_current_pi->poc.layno1 = l_current_poc->layno1;
		l_current_pi->poc.precno1 = p_max_precision;
		++l_current_pi;
		++l_current_poc;
	}
}

void 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 prameters 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;
	}
}

/**
 * Creates a packet iterator for encoding.
 * 
 * @param	p_image		the image being encoded.
 * @param	p_cp		the coding parameters.
 * @param	p_tile_no	index of the tile being encoded.
 * @param	p_t2_mode	the type of pass for generating the packet iterator
 * @return	a list of packet iterator that points to the first packet of the tile (not true).
*/
opj_pi_iterator_t *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
										)
{ 
	// loop
	OPJ_UINT32 pino;
	OPJ_UINT32 compno, resno;
	
	// to store w, h, dx and dy fro all components and resolutions
	OPJ_UINT32 * l_tmp_data;
	OPJ_UINT32 ** l_tmp_ptr;
	
	// encoding prameters to set
	OPJ_UINT32 l_max_res;
	OPJ_UINT32 l_max_prec;
	OPJ_INT32 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 * J2K_MAXRLVLS;
	l_tmp_data = (OPJ_UINT32*)opj_malloc(
		l_data_stride * p_image->numcomps * sizeof(OPJ_UINT32));
	if
		(! l_tmp_data)
	{
		return 00;
	}
	l_tmp_ptr = (OPJ_UINT32**)opj_malloc(
		p_image->numcomps * sizeof(OPJ_UINT32 *));
	if
		(! l_tmp_ptr)
	{
		opj_free(l_tmp_data);
		return 00;
	}

	// memory allocation for pi
	l_pi = pi_create(p_image,p_cp,p_tile_no);
	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 < p_image->numcomps; ++compno)
	{
		l_tmp_ptr[compno] = l_encoding_value_ptr;
		l_encoding_value_ptr += l_data_stride;
	}
	// get encoding parameters
	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 = p_image->numcomps * l_step_c;
	l_step_l = l_max_res * l_step_r;
	
	// set values for first packet iterator
	l_pi->tp_on = p_cp->m_specific_param.m_enc.m_tp_on;
	l_current_pi = l_pi;

	// memory allocation for include
	l_current_pi->include = (OPJ_INT16*) opj_calloc(l_tcp->numlayers * l_step_l, sizeof(OPJ_INT16));
	if
		(!l_current_pi->include) 
	{
		opj_free(l_tmp_data);
		opj_free(l_tmp_ptr);
		pi_destroy(l_pi, l_bound);
		return 00;
	}
	memset(l_current_pi->include,0,l_tcp->numlayers * l_step_l* sizeof(OPJ_INT16));
	
	// 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 pi_create */
	for 
		(compno = 0; compno < l_current_pi->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 )
	{
		opj_pi_comp_t *l_current_comp = l_current_pi->comps;
		opj_image_comp_t * 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 pi_create */
		for 
			(compno = 0; compno < l_current_pi->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;
	}
	opj_free(l_tmp_data);
	l_tmp_data = 00;
	opj_free(l_tmp_ptr);
	l_tmp_ptr = 00;
	if
		(l_tcp->POC && ( p_cp->m_specific_param.m_enc.m_cinema || p_t2_mode == FINAL_PASS))
	{
		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
	{
		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);
	}
	return l_pi;
}

/**
 * Updates the encoding parameters of the codec.
 * 
 * @param	p_image		the image being encoded.
 * @param	p_cp		the coding parameters.
 * @param	p_tile_no	index of the tile being encoded.
*/
void pi_update_encoding_parameters(
										const opj_image_t *p_image,
										opj_cp_t *p_cp, 
										OPJ_UINT32 p_tile_no
										)
{ 
	// encoding prameters to set
	OPJ_UINT32 l_max_res;
	OPJ_UINT32 l_max_prec;
	OPJ_INT32 l_tx0,l_tx1,l_ty0,l_ty1;
	OPJ_UINT32 l_dx_min,l_dy_min;
	
	// pointers
	opj_tcp_t *l_tcp = 00;
	
	// preconditions in debug
	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
	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)
	{
		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
	{
		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);
	}
}


/**
 * 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	p_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 the maximum precision for all the bands of the tile
 * @param	p_max_res		pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param	dx_min			pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min			pointer that will hold the the minimum dy of all the components of all the resolutions for the tile.
 */
void get_encoding_parameters(
								const opj_image_t *p_image,
								const opj_cp_t *p_cp, 
								OPJ_UINT32 p_tileno,
								OPJ_INT32 * p_tx0,
								OPJ_INT32  * p_tx1,
								OPJ_INT32  * p_ty0,
								OPJ_INT32  * 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;
	
	// preconditions in debug
	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
	*p_tx0 = int_max(p_cp->tx0 + p * p_cp->tdx, p_image->x0);
	*p_tx1 = int_min(p_cp->tx0 + (p + 1) * p_cp->tdx, p_image->x1);
	*p_ty0 = int_max(p_cp->ty0 + q * p_cp->tdy, p_image->y0);
	*p_ty1 = int_min(p_cp->ty0 + (q + 1) * 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) 
	{
		// aritmetic variables to calculate
		OPJ_UINT32 l_level_no;
		OPJ_INT32 l_rx0, l_ry0, l_rx1, l_ry1;
		OPJ_INT32 l_px0, l_py0, l_px1, py1;
		OPJ_UINT32 l_pdx, l_pdy;
		OPJ_UINT32 l_pw, l_ph;
		OPJ_UINT32 l_product;
		OPJ_INT32 l_tcx0, l_tcy0, l_tcx1, l_tcy1;

		l_tcx0 = int_ceildiv(*p_tx0, l_img_comp->dx);
		l_tcy0 = int_ceildiv(*p_ty0, l_img_comp->dy);
		l_tcx1 = int_ceildiv(*p_tx1, l_img_comp->dx);
		l_tcy1 = int_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_UINT32 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 * (1 << (l_pdx + l_tccp->numresolutions - 1 - resno));
			l_dy = l_img_comp->dy * (1 << (l_pdy + l_tccp->numresolutions - 1 - resno));
			// take the minimum size for dx for each comp and resolution
			*p_dx_min = uint_min(*p_dx_min, l_dx);
			*p_dy_min = uint_min(*p_dy_min, l_dy);
			// various calculations of extents
			l_level_no = l_tccp->numresolutions - 1 - resno;
			l_rx0 = int_ceildivpow2(l_tcx0, l_level_no);
			l_ry0 = int_ceildivpow2(l_tcy0, l_level_no);
			l_rx1 = int_ceildivpow2(l_tcx1, l_level_no);
			l_ry1 = int_ceildivpow2(l_tcy1, l_level_no);
			l_px0 = int_floordivpow2(l_rx0, l_pdx) << l_pdx;
			l_py0 = int_floordivpow2(l_ry0, l_pdy) << l_pdy;
			l_px1 = int_ceildivpow2(l_rx1, l_pdx) << l_pdx;
			py1 = int_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;
	}
}

/**
 * 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 the maximum precision for all the bands of the tile
 * @param	p_max_res		pointer that will hold the the maximum number of resolutions for all the poc inside the tile.
 * @param	dx_min			pointer that will hold the the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min			pointer that will hold the 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.
 */
void get_all_encoding_parameters(
								const opj_image_t *p_image,
								const opj_cp_t *p_cp, 
								OPJ_UINT32 tileno,
								OPJ_INT32 * p_tx0,
								OPJ_INT32 * p_tx1,
								OPJ_INT32 * p_ty0,
								OPJ_INT32 * 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;

	// 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 */
	*p_tx0 = int_max(p_cp->tx0 + p * p_cp->tdx, p_image->x0);
	*p_tx1 = int_min(p_cp->tx0 + (p + 1) * p_cp->tdx, p_image->x1);
	*p_ty0 = int_max(p_cp->ty0 + q * p_cp->tdy, p_image->y0);
	*p_ty1 = int_min(p_cp->ty0 + (q + 1) * 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) 
	{
		// aritmetic variables to calculate
		OPJ_UINT32 l_level_no;
		OPJ_INT32 l_rx0, l_ry0, l_rx1, l_ry1;
		OPJ_INT32 l_px0, l_py0, l_px1, py1;
		OPJ_UINT32 l_product;
		OPJ_INT32 l_tcx0, l_tcy0, l_tcx1, l_tcy1;
		OPJ_UINT32 l_pdx, l_pdy , l_pw , l_ph;

		lResolutionPtr = p_resolutions[compno];
		
		l_tcx0 = int_ceildiv(*p_tx0, l_img_comp->dx);
		l_tcy0 = int_ceildiv(*p_ty0, l_img_comp->dy);
		l_tcx1 = int_ceildiv(*p_tx1, l_img_comp->dx);
		l_tcy1 = int_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 - 1;
		for 
			(resno = 0; resno < l_tccp->numresolutions; ++resno)
		{
			OPJ_UINT32 l_dx, l_dy;
			// precinct width and height
			l_pdx = l_tccp->prcw[resno];
			l_pdy = l_tccp->prch[resno];
			*lResolutionPtr++ = l_pdx;
			*lResolutionPtr++ = l_pdy;
			l_dx = l_img_comp->dx * (1 << (l_pdx + l_level_no));
			l_dy = l_img_comp->dy * (1 << (l_pdy + l_level_no));
			// take the minimum size for l_dx for each comp and resolution
			*p_dx_min = int_min(*p_dx_min, l_dx);
			*p_dy_min = int_min(*p_dy_min, l_dy);
			// various calculations of extents
			
			l_rx0 = int_ceildivpow2(l_tcx0, l_level_no);
			l_ry0 = int_ceildivpow2(l_tcy0, l_level_no);
			l_rx1 = int_ceildivpow2(l_tcx1, l_level_no);
			l_ry1 = int_ceildivpow2(l_tcy1, l_level_no);
			l_px0 = int_floordivpow2(l_rx0, l_pdx) << l_pdx;
			l_py0 = int_floordivpow2(l_ry0, l_pdy) << l_pdy;
			l_px1 = int_ceildivpow2(l_rx1, l_pdx) << l_pdx;
			py1 = int_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);
			*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_level_no;
		}
		++l_tccp;
		++l_img_comp;
	}
}

/**
 * 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	p_tile_no	the index of the tile from which creating the packet iterator.
 */
opj_pi_iterator_t * pi_create(
								const opj_image_t *image,
								const opj_cp_t *cp, 
								OPJ_UINT32 tileno
							)
{ 
	// 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 00;
	}
	memset(l_pi,0,l_poc_bound * sizeof(opj_pi_iterator_t));
	l_current_pi = l_pi;
	for
		(pino = 0; pino < l_poc_bound ; ++pino)
	{
		l_current_pi->comps = (opj_pi_comp_t*) opj_calloc(image->numcomps, sizeof(opj_pi_comp_t));
		if
			(! l_current_pi->comps) 
		{
			pi_destroy(l_pi, l_poc_bound);
			return 00;
		}
		l_current_pi->numcomps = image->numcomps;
		memset(l_current_pi->comps,0,image->numcomps * sizeof(opj_pi_comp_t));
		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_malloc(tccp->numresolutions * sizeof(opj_pi_resolution_t));
			if
				(!comp->resolutions) 
			{
				pi_destroy(l_pi, l_poc_bound);
				return 00;
			}
			comp->numresolutions = tccp->numresolutions;
			memset(comp->resolutions,0,tccp->numresolutions * sizeof(opj_pi_resolution_t));
		}
		++l_current_pi;
	}
	return l_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	dx_min		the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min		the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_poc_and_final (
									 opj_cp_t *p_cp,
									 OPJ_UINT32 p_tileno,
									 OPJ_INT32 p_tx0, 
									 OPJ_INT32 p_tx1, 
									 OPJ_INT32 p_ty0, 
									 OPJ_INT32 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;

	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 = 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;
	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 = 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;
	}
}

/**
 * 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_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	dx_min		the minimum dx of all the components of all the resolutions for the tile.
 * @param	dy_min		the minimum dy of all the components of all the resolutions for the tile.
 */
void pi_update_encode_not_poc ( 
								opj_cp_t *p_cp,
								OPJ_UINT32 p_num_comps,
								OPJ_UINT32 p_tileno,
								OPJ_INT32 p_tx0, 
								OPJ_INT32 p_tx1, 
								OPJ_INT32 p_ty0, 
								OPJ_INT32 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;
	}
}

/**
 * Destroys a packet iterator array.
 * 
 * @param	p_pi			the packet iterator array to destroy.
 * @param	p_nb_elements	the number of elements in the array.
 */
void 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;
		}
		// TODO
		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);
	}
}

bool pi_next(opj_pi_iterator_t * pi) {
	switch (pi->poc.prg) {
		case LRCP:
			return pi_next_lrcp(pi);
		case RLCP:
			return pi_next_rlcp(pi);
		case RPCL:
			return pi_next_rpcl(pi);
		case PCRL:
			return pi_next_pcrl(pi);
		case CPRL:
			return pi_next_cprl(pi);
		case PROG_UNKNOWN:
			return false;
	}
	
	return false;
}

OPJ_INT32 pi_check_next_level(OPJ_INT32 pos,opj_cp_t *cp,OPJ_UINT32 tileno, OPJ_UINT32 pino, const OPJ_CHAR *prog)
{
	OPJ_INT32 i,l;
	opj_tcp_t *tcps =&cp->tcps[tileno];
	opj_poc_t *tcp = &tcps->pocs[pino];
	if(pos>=0){
		for(i=pos;pos>=0;i--){
			switch(prog[i]){
		case 'R':
			if(tcp->res_t==tcp->resE){
				l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
				if(l==1){
					return 1;
				}else{
					return 0;
				}
			}else{
				return 1;
			}
			break;
		case 'C':
			if(tcp->comp_t==tcp->compE){
				l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
				if(l==1){
					return 1;
				}else{
					return 0;
				}
			}else{
				return 1;
			}
			break;
		case 'L':
			if(tcp->lay_t==tcp->layE){
				l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
				if(l==1){
					return 1;
				}else{
					return 0;
				}
			}else{
				return 1;
			}
			break;
		case 'P':
			switch(tcp->prg){
				case LRCP||RLCP:
					if(tcp->prc_t == tcp->prcE){
						l=pi_check_next_level(i-1,cp,tileno,pino,prog);
						if(l==1){
							return 1;
						}else{
							return 0;
						}
					}else{
						return 1;
					}
					break;
			default:
				if(tcp->tx0_t == tcp->txE){
					//TY 
					if(tcp->ty0_t == tcp->tyE){
						l=pi_check_next_level(i-1,cp,tileno,pino,prog);
						if(l==1){
							return 1;
						}else{
							return 0;
						}
					}else{
						return 1;
					}//TY
				}else{
					return 1;
				}
				break;
			}//end case P
		}//end switch
		}//end for
	}//end if
	return 0;
}


void 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,l;
	OPJ_UINT32 incr_top=1,resetX=0;
	opj_tcp_t *tcps =&cp->tcps[tileno];
	opj_poc_t *tcp= &tcps->pocs[pino];
	
	prog = 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&& ((!cp->m_specific_param.m_enc.m_cinema && (t2_mode == FINAL_PASS)) || cp->m_specific_param.m_enc.m_cinema))){
		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 LRCP:
					case 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 LRCP:
								case 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 = pi[pino].poc.tx1;
									tcp->ty0_t = 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 LRCP:
								case 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){
									l=pi_check_next_level(i-1,cp,tileno,pino,prog);
									if(l==1){
										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){
									l=pi_check_next_level(i-1,cp,tileno,pino,prog);
									if(l==1){
										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){
									l=pi_check_next_level(i-1,cp,tileno,pino,prog);
									if(l==1){
										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 LRCP:
									case RLCP:
										if(tcp->prc_t == tcp->prcE){
											l=pi_check_next_level(i-1,cp,tileno,pino,prog);
											if(l==1){
												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){
												l=pi_check_next_level(i-1,cp,tileno,pino,prog);
												if(l==1){
													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 = 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 = 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 = 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 = pi[pino].poc.tx1;
											incr_top=0;
										}
										break;
								}
								break;
					}
				}
			}
		}
	}
}