libopenjpeg/pi.c

   1 /*
   2  * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
   3  * Copyright (c) 2002-2007, Professor Benoit Macq
   4  * Copyright (c) 2001-2003, David Janssens
   5  * Copyright (c) 2002-2003, Yannick Verschueren
   6  * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
   7  * Copyright (c) 2005, Herve Drolon, FreeImage Team
   8  * Copyright (c) 2006-2007, Parvatha Elangovan
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include "opj_includes.h"
  34
  35 /** @defgroup PI PI - Implementation of a packet iterator */
  36 /*@{*/
  37
  38 /** @name Local static functions */
  39 /*@{*/
  40
  41 /**
  42 Get next packet in layer-resolution-component-precinct order.
  43 @param pi packet iterator to modify
  44 @return returns false if pi pointed to the last packet or else returns true
  45 */
  46 static bool pi_next_lrcp(opj_pi_iterator_t * pi);
  47 /**
  48 Get next packet in resolution-layer-component-precinct order.
  49 @param pi packet iterator to modify
  50 @return returns false if pi pointed to the last packet or else returns true
  51 */
  52 static bool pi_next_rlcp(opj_pi_iterator_t * pi);
  53 /**
  54 Get next packet in resolution-precinct-component-layer order.
  55 @param pi packet iterator to modify
  56 @return returns false if pi pointed to the last packet or else returns true
  57 */
  58 static bool pi_next_rpcl(opj_pi_iterator_t * pi);
  59 /**
  60 Get next packet in precinct-component-resolution-layer order.
  61 @param pi packet iterator to modify
  62 @return returns false if pi pointed to the last packet or else returns true
  63 */
  64 static bool pi_next_pcrl(opj_pi_iterator_t * pi);
  65 /**
  66 Get next packet in component-precinct-resolution-layer order.
  67 @param pi packet iterator to modify
  68 @return returns false if pi pointed to the last packet or else returns true
  69 */
  70 static bool pi_next_cprl(opj_pi_iterator_t * pi);
  71
  72 /*@}*/
  73
  74 /*@}*/
  75
  76 /*
  77 ==========================================================
  78    local functions
  79 ==========================================================
  80 */
  81
  82 static bool pi_next_lrcp(opj_pi_iterator_t * pi) {
  83         opj_pi_comp_t *comp = NULL;
  84         opj_pi_resolution_t *res = NULL;
  85         long index = 0;
  86
  87         if (!pi->first) {
  88                 comp = &pi->comps[pi->compno];
  89                 res = &comp->resolutions[pi->resno];
  90                 goto LABEL_SKIP;
  91         } else {
  92                 pi->first = 0;
  93         }
  94
  95         for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
  96                 for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1;
  97                 pi->resno++) {
  98                         for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
  99                                 comp = &pi->comps[pi->compno];
 100                                 if (pi->resno >= comp->numresolutions) {
 101                                         continue;
 102                                 }
 103                                 res = &comp->resolutions[pi->resno];
 104                                 if (!pi->tp_on){
 105                                         pi->poc.precno1 = res->pw * res->ph;
 106                                 }
 107                                 for (pi->precno = pi->poc.precno0; pi->precno < pi->poc.precno1; pi->precno++) {
 108                                         index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
 109                                         if (!pi->include[index]) {
 110                                                 pi->include[index] = 1;
 111                                                 return true;
 112                                         }
 113 LABEL_SKIP:;
 114                                 }
 115                         }
 116                 }
 117         }
 118
 119         return false;
 120 }
 121
 122 static bool pi_next_rlcp(opj_pi_iterator_t * pi) {
 123         opj_pi_comp_t *comp = NULL;
 124         opj_pi_resolution_t *res = NULL;
 125         long index = 0;
 126
 127         if (!pi->first) {
 128                 comp = &pi->comps[pi->compno];
 129                 res = &comp->resolutions[pi->resno];
 130                 goto LABEL_SKIP;
 131         } else {
 132                 pi->first = 0;
 133         }
 134
 135         for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
 136                 for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
 137                         for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
 138                                 comp = &pi->comps[pi->compno];
 139                                 if (pi->resno >= comp->numresolutions) {
 140                                         continue;
 141                                 }
 142                                 res = &comp->resolutions[pi->resno];
 143                                 if(!pi->tp_on){
 144                                         pi->poc.precno1 = res->pw * res->ph;
 145                                 }
 146                                 for (pi->precno = pi->poc.precno0; pi->precno < pi->poc.precno1; pi->precno++) {
 147                                         index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
 148                                         if (!pi->include[index]) {
 149                                                 pi->include[index] = 1;
 150                                                 return true;
 151                                         }
 152 LABEL_SKIP:;
 153                                 }
 154                         }
 155                 }
 156         }
 157
 158         return false;
 159 }
 160
 161 static bool pi_next_rpcl(opj_pi_iterator_t * pi) {
 162         opj_pi_comp_t *comp = NULL;
 163         opj_pi_resolution_t *res = NULL;
 164         long index = 0;
 165
 166         if (!pi->first) {
 167                 goto LABEL_SKIP;
 168         } else {
 169                 int compno, resno;
 170                 pi->first = 0;
 171                 pi->dx = 0;
 172                 pi->dy = 0;
 173                 for (compno = 0; compno < pi->numcomps; compno++) {
 174                         comp = &pi->comps[compno];
 175                         for (resno = 0; resno < comp->numresolutions; resno++) {
 176                                 int dx, dy;
 177                                 res = &comp->resolutions[resno];
 178                                 dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
 179                                 dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
 180                                 pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
 181                                 pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
 182                         }
 183                 }
 184         }
 185 if (!pi->tp_on){
 186                         pi->poc.ty0 = pi->ty0;
 187                         pi->poc.tx0 = pi->tx0;
 188                         pi->poc.ty1 = pi->ty1;
 189                         pi->poc.tx1 = pi->tx1;
 190                 }
 191         for (pi->resno = pi->poc.resno0; pi->resno < pi->poc.resno1; pi->resno++) {
 192                 for (pi->y = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
 193                         for (pi->x = pi->poc.tx0; pi->x < pi->poc.tx1; pi->x += pi->dx - (pi->x % pi->dx)) {
 194                                 for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
 195                                         int levelno;
 196                                         int trx0, try0;
 197                                         int trx1, try1;
 198                                         int rpx, rpy;
 199                                         int prci, prcj;
 200                                         comp = &pi->comps[pi->compno];
 201                                         if (pi->resno >= comp->numresolutions) {
 202                                                 continue;
 203                                         }
 204                                         res = &comp->resolutions[pi->resno];
 205                                         levelno = comp->numresolutions - 1 - pi->resno;
 206                                         trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
 207                                         try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
 208                                         trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
 209                                         try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
 210                                         rpx = res->pdx + levelno;
 211                                         rpy = res->pdy + levelno;
 212                                         if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpx))))){
 213                                                 continue;
 214                                         }
 215                                         if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
 216                                                 continue;
 217                                         }
 218
 219                                         if ((res->pw==0)||(res->pw==0)) continue;
 220
 221                                         if ((trx0==trx1)||(try0==try1)) continue;
 222
 223                                         prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx)
 224                                                  - int_floordivpow2(trx0, res->pdx);
 225                                         prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy)
 226                                                  - int_floordivpow2(try0, res->pdy);
 227                                         pi->precno = prci + prcj * res->pw;
 228                                         for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
 229                                                 index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
 230                                                 if (!pi->include[index]) {
 231                                                         pi->include[index] = 1;
 232                                                         return true;
 233                                                 }
 234 LABEL_SKIP:;
 235                                         }
 236                                 }
 237                         }
 238                 }
 239         }
 240
 241         return false;
 242 }
 243
 244 static bool pi_next_pcrl(opj_pi_iterator_t * pi) {
 245         opj_pi_comp_t *comp = NULL;
 246         opj_pi_resolution_t *res = NULL;
 247         long index = 0;
 248
 249         if (!pi->first) {
 250                 comp = &pi->comps[pi->compno];
 251                 goto LABEL_SKIP;
 252         } else {
 253                 int compno, resno;
 254                 pi->first = 0;
 255                 pi->dx = 0;
 256                 pi->dy = 0;
 257                 for (compno = 0; compno < pi->numcomps; compno++) {
 258                         comp = &pi->comps[compno];
 259                         for (resno = 0; resno < comp->numresolutions; resno++) {
 260                                 int dx, dy;
 261                                 res = &comp->resolutions[resno];
 262                                 dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
 263                                 dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
 264                                 pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
 265                                 pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
 266                         }
 267                 }
 268         }
 269         if (!pi->tp_on){
 270                         pi->poc.ty0 = pi->ty0;
 271                         pi->poc.tx0 = pi->tx0;
 272                         pi->poc.ty1 = pi->ty1;
 273                         pi->poc.tx1 = pi->tx1;
 274                 }
 275         for (pi->y = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
 276                 for (pi->x = pi->poc.tx0; pi->x < pi->poc.tx1; pi->x += pi->dx - (pi->x % pi->dx)) {
 277                         for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
 278                                 comp = &pi->comps[pi->compno];
 279                                 for (pi->resno = pi->poc.resno0; pi->resno < int_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
 280                                         int levelno;
 281                                         int trx0, try0;
 282                                         int trx1, try1;
 283                                         int rpx, rpy;
 284                                         int prci, prcj;
 285                                         res = &comp->resolutions[pi->resno];
 286                                         levelno = comp->numresolutions - 1 - pi->resno;
 287                                         trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
 288                                         try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
 289                                         trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
 290                                         try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
 291                                         rpx = res->pdx + levelno;
 292                                         rpy = res->pdy + levelno;
 293                                         if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpx))))){
 294                                                 continue;
 295                                         }
 296                                         if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
 297                                                 continue;
 298                                         }
 299
 300                                         if ((res->pw==0)||(res->pw==0)) continue;
 301
 302                                         if ((trx0==trx1)||(try0==try1)) continue;
 303
 304                                         prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx)
 305                                                  - int_floordivpow2(trx0, res->pdx);
 306                                         prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy)
 307                                                  - int_floordivpow2(try0, res->pdy);
 308                                         pi->precno = prci + prcj * res->pw;
 309                                         for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
 310                                                 index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
 311                                                 if (!pi->include[index]) {
 312                                                         pi->include[index] = 1;
 313                                                         return true;
 314                                                 }
 315 LABEL_SKIP:;
 316                                         }
 317                                 }
 318                         }
 319                 }
 320         }
 321
 322         return false;
 323 }
 324
 325 static bool pi_next_cprl(opj_pi_iterator_t * pi) {
 326         opj_pi_comp_t *comp = NULL;
 327         opj_pi_resolution_t *res = NULL;
 328         long index = 0;
 329
 330         if (!pi->first) {
 331                 comp = &pi->comps[pi->compno];
 332                 goto LABEL_SKIP;
 333         } else {
 334                 pi->first = 0;
 335         }
 336
 337         for (pi->compno = pi->poc.compno0; pi->compno < pi->poc.compno1; pi->compno++) {
 338                 int resno;
 339                 comp = &pi->comps[pi->compno];
 340                 pi->dx = 0;
 341                 pi->dy = 0;
 342                 for (resno = 0; resno < comp->numresolutions; resno++) {
 343                         int dx, dy;
 344                         res = &comp->resolutions[resno];
 345                         dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
 346                         dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
 347                         pi->dx = !pi->dx ? dx : int_min(pi->dx, dx);
 348                         pi->dy = !pi->dy ? dy : int_min(pi->dy, dy);
 349                 }
 350                 if (!pi->tp_on){
 351                         pi->poc.ty0 = pi->ty0;
 352                         pi->poc.tx0 = pi->tx0;
 353                         pi->poc.ty1 = pi->ty1;
 354                         pi->poc.tx1 = pi->tx1;
 355                 }
 356                 for (pi->y = pi->poc.ty0; pi->y < pi->poc.ty1; pi->y += pi->dy - (pi->y % pi->dy)) {
 357                         for (pi->x = pi->poc.tx0; pi->x < pi->poc.tx1; pi->x += pi->dx - (pi->x % pi->dx)) {
 358                                 for (pi->resno = pi->poc.resno0; pi->resno < int_min(pi->poc.resno1, comp->numresolutions); pi->resno++) {
 359                                         int levelno;
 360                                         int trx0, try0;
 361                                         int trx1, try1;
 362                                         int rpx, rpy;
 363                                         int prci, prcj;
 364                                         res = &comp->resolutions[pi->resno];
 365                                         levelno = comp->numresolutions - 1 - pi->resno;
 366                                         trx0 = int_ceildiv(pi->tx0, comp->dx << levelno);
 367                                         try0 = int_ceildiv(pi->ty0, comp->dy << levelno);
 368                                         trx1 = int_ceildiv(pi->tx1, comp->dx << levelno);
 369                                         try1 = int_ceildiv(pi->ty1, comp->dy << levelno);
 370                                         rpx = res->pdx + levelno;
 371                                         rpy = res->pdy + levelno;
 372                                         if (!((pi->y % (comp->dy << rpy) == 0) || ((pi->y == pi->ty0) && ((try0 << levelno) % (1 << rpx))))){
 373                                                 continue;
 374                                         }
 375                                         if (!((pi->x % (comp->dx << rpx) == 0) || ((pi->x == pi->tx0) && ((trx0 << levelno) % (1 << rpx))))){
 376                                                 continue;
 377                                         }
 378
 379                                         if ((res->pw==0)||(res->pw==0)) continue;
 380
 381                                         if ((trx0==trx1)||(try0==try1)) continue;
 382
 383                                         prci = int_floordivpow2(int_ceildiv(pi->x, comp->dx << levelno), res->pdx)
 384                                                  - int_floordivpow2(trx0, res->pdx);
 385                                         prcj = int_floordivpow2(int_ceildiv(pi->y, comp->dy << levelno), res->pdy)
 386                                                  - int_floordivpow2(try0, res->pdy);
 387                                         pi->precno = prci + prcj * res->pw;
 388                                         for (pi->layno = pi->poc.layno0; pi->layno < pi->poc.layno1; pi->layno++) {
 389                                                 index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;
 390                                                 if (!pi->include[index]) {
 391                                                         pi->include[index] = 1;
 392                                                         return true;
 393                                                 }
 394 LABEL_SKIP:;
 395                                         }
 396                                 }
 397                         }
 398                 }
 399         }
 400
 401         return false;
 402 }
 403
 404 /*
 405 ==========================================================
 406    Packet iterator interface
 407 ==========================================================
 408 */
 409
 410 opj_pi_iterator_t *pi_create_decode(opj_image_t *image, opj_cp_t *cp, int tileno) {
 411         int p, q;
 412         int compno, resno, pino;
 413         opj_pi_iterator_t *pi = NULL;
 414         opj_tcp_t *tcp = NULL;
 415         opj_tccp_t *tccp = NULL;
 416         size_t array_size;
 417
 418         tcp = &cp->tcps[tileno];
 419
 420         array_size = (tcp->numpocs + 1) * sizeof(opj_pi_iterator_t);
 421         pi = (opj_pi_iterator_t *) opj_malloc(array_size);
 422         if(!pi) {
 423                 /* TODO: throw an error */
 424                 return NULL;
 425         }
 426
 427         for (pino = 0; pino < tcp->numpocs + 1; pino++) {       /* change */
 428                 int maxres = 0;
 429                 int maxprec = 0;
 430                 p = tileno % cp->tw;
 431                 q = tileno / cp->tw;
 432
 433                 pi[pino].tx0 = int_max(cp->tx0 + p * cp->tdx, image->x0);
 434                 pi[pino].ty0 = int_max(cp->ty0 + q * cp->tdy, image->y0);
 435                 pi[pino].tx1 = int_min(cp->tx0 + (p + 1) * cp->tdx, image->x1);
 436                 pi[pino].ty1 = int_min(cp->ty0 + (q + 1) * cp->tdy, image->y1);
 437                 pi[pino].numcomps = image->numcomps;
 438
 439                 array_size = image->numcomps * sizeof(opj_pi_comp_t);
 440                 pi[pino].comps = (opj_pi_comp_t *) opj_malloc(array_size);
 441                 if(!pi[pino].comps) {
 442                         /* TODO: throw an error */
 443                         pi_destroy(pi, cp, tileno);
 444                         return NULL;
 445                 }
 446                 memset(pi[pino].comps, 0, array_size);
 447
 448                 for (compno = 0; compno < pi->numcomps; compno++) {
 449                         int tcx0, tcy0, tcx1, tcy1;
 450                         opj_pi_comp_t *comp = &pi[pino].comps[compno];
 451                         tccp = &tcp->tccps[compno];
 452                         comp->dx = image->comps[compno].dx;
 453                         comp->dy = image->comps[compno].dy;
 454                         comp->numresolutions = tccp->numresolutions;
 455
 456                         array_size = comp->numresolutions * sizeof(opj_pi_resolution_t);
 457                         comp->resolutions =     (opj_pi_resolution_t *) opj_malloc(array_size);
 458                         if(!comp->resolutions) {
 459                                 /* TODO: throw an error */
 460                                 pi_destroy(pi, cp, tileno);
 461                                 return NULL;
 462                         }
 463
 464                         tcx0 = int_ceildiv(pi->tx0, comp->dx);
 465                         tcy0 = int_ceildiv(pi->ty0, comp->dy);
 466                         tcx1 = int_ceildiv(pi->tx1, comp->dx);
 467                         tcy1 = int_ceildiv(pi->ty1, comp->dy);
 468                         if (comp->numresolutions > maxres) {
 469                                 maxres = comp->numresolutions;
 470                         }
 471
 472                         for (resno = 0; resno < comp->numresolutions; resno++) {
 473                                 int levelno;
 474                                 int rx0, ry0, rx1, ry1;
 475                                 int px0, py0, px1, py1;
 476                                 opj_pi_resolution_t *res = &comp->resolutions[resno];
 477                                 if (tccp->csty & J2K_CCP_CSTY_PRT) {
 478                                         res->pdx = tccp->prcw[resno];
 479                                         res->pdy = tccp->prch[resno];
 480                                 } else {
 481                                         res->pdx = 15;
 482                                         res->pdy = 15;
 483                                 }
 484                                 levelno = comp->numresolutions - 1 - resno;
 485                                 rx0 = int_ceildivpow2(tcx0, levelno);
 486                                 ry0 = int_ceildivpow2(tcy0, levelno);
 487                                 rx1 = int_ceildivpow2(tcx1, levelno);
 488                                 ry1 = int_ceildivpow2(tcy1, levelno);
 489                                 px0 = int_floordivpow2(rx0, res->pdx) << res->pdx;
 490                                 py0 = int_floordivpow2(ry0, res->pdy) << res->pdy;
 491                                 px1 = int_ceildivpow2(rx1, res->pdx) << res->pdx;
 492                                 py1 = int_ceildivpow2(ry1, res->pdy) << res->pdy;
 493                                 res->pw = (rx0==rx1)?0:((px1 - px0) >> res->pdx);
 494                                 res->ph = (ry0==ry1)?0:((py1 - py0) >> res->pdy);
 495
 496                                 if (res->pw*res->ph > maxprec) {
 497                                         maxprec = res->pw*res->ph;
 498                                 }
 499
 500                         }
 501                 }
 502
 503                 tccp = &tcp->tccps[0];
 504                 pi[pino].step_p = 1;
 505                 pi[pino].step_c = maxprec * pi[pino].step_p;
 506                 pi[pino].step_r = image->numcomps * pi[pino].step_c;
 507                 pi[pino].step_l = maxres * pi[pino].step_r;
 508
 509                 if (pino == 0) {
 510                         array_size = image->numcomps * maxres * tcp->numlayers * maxprec * sizeof(short int);
 511                         pi[pino].include = (short int *) opj_malloc(array_size);
 512                         if(!pi[pino].include) {
 513                                 /* TODO: throw an error */
 514                                 pi_destroy(pi, cp, tileno);
 515                                 return NULL;
 516                         }
 517                 }
 518                 else {
 519                         pi[pino].include = pi[pino - 1].include;
 520                 }
 521
 522                 if (tcp->POC == 0) {
 523                         pi[pino].first = 1;
 524                         pi[pino].poc.resno0 = 0;
 525                         pi[pino].poc.compno0 = 0;
 526                         pi[pino].poc.layno1 = tcp->numlayers;
 527                         pi[pino].poc.resno1 = maxres;
 528                         pi[pino].poc.compno1 = image->numcomps;
 529                         pi[pino].poc.prg = tcp->prg;
 530                 } else {
 531                         pi[pino].first = 1;
 532                         pi[pino].poc.resno0 = tcp->pocs[pino].resno0;
 533                         pi[pino].poc.compno0 = tcp->pocs[pino].compno0;
 534                         pi[pino].poc.layno1 = tcp->pocs[pino].layno1;
 535                         pi[pino].poc.resno1 = tcp->pocs[pino].resno1;
 536                         pi[pino].poc.compno1 = tcp->pocs[pino].compno1;
 537                         pi[pino].poc.prg = tcp->pocs[pino].prg;
 538                 }
 539                 pi[pino].poc.layno0  = 0;
 540                 pi[pino].poc.precno0 = 0;
 541                 pi[pino].poc.precno1 = maxprec;
 542
 543         }
 544
 545         return pi;
 546 }
 547
 548
 549 opj_pi_iterator_t *pi_initialise_encode(opj_image_t *image, opj_cp_t *cp, int tileno, int pino){
 550         int p, q;
 551         int compno, resno;
 552         int maxres = 0;
 553         int maxprec = 0;
 554         opj_pi_iterator_t *pi = NULL;
 555         opj_tcp_t *tcp = NULL;
 556         opj_tccp_t *tccp = NULL;
 557         size_t array_size;
 558
 559         tcp = &cp->tcps[tileno];
 560
 561         array_size = (tcp->numpocs + 1) * sizeof(opj_pi_iterator_t);
 562         pi = (opj_pi_iterator_t *) opj_malloc(array_size);
 563         pi->tp_on = cp->tp_on;
 564         if(!pi) {       return NULL;}
 565         for(pino = 0;pino < tcp->numpocs+1 ; pino ++){
 566                 p = tileno % cp->tw;
 567                 q = tileno / cp->tw;
 568
 569                 pi[pino].tx0 = int_max(cp->tx0 + p * cp->tdx, image->x0);
 570                 pi[pino].ty0 = int_max(cp->ty0 + q * cp->tdy, image->y0);
 571                 pi[pino].tx1 = int_min(cp->tx0 + (p + 1) * cp->tdx, image->x1);
 572                 pi[pino].ty1 = int_min(cp->ty0 + (q + 1) * cp->tdy, image->y1);
 573                 pi[pino].numcomps = image->numcomps;
 574
 575                 array_size = image->numcomps * sizeof(opj_pi_comp_t);
 576                 pi[pino].comps = (opj_pi_comp_t *) opj_malloc(array_size);
 577                 if(!pi[pino].comps) {
 578                         pi_destroy(pi, cp, tileno);
 579                         return NULL;
 580                 }
 581                 memset(pi[pino].comps, 0, array_size);
 582
 583                 for (compno = 0; compno < pi->numcomps; compno++) {
 584                         int tcx0, tcy0, tcx1, tcy1;
 585                         opj_pi_comp_t *comp = &pi[pino].comps[compno];
 586                         tccp = &tcp->tccps[compno];
 587                         comp->dx = image->comps[compno].dx;
 588                         comp->dy = image->comps[compno].dy;
 589                         comp->numresolutions = tccp->numresolutions;
 590
 591                         array_size = comp->numresolutions * sizeof(opj_pi_resolution_t);
 592                         comp->resolutions =     (opj_pi_resolution_t *) opj_malloc(array_size);
 593                         if(!comp->resolutions) {
 594                                 pi_destroy(pi, cp, tileno);
 595                                 return NULL;
 596                         }
 597
 598                         tcx0 = int_ceildiv(pi->tx0, comp->dx);
 599                         tcy0 = int_ceildiv(pi->ty0, comp->dy);
 600                         tcx1 = int_ceildiv(pi->tx1, comp->dx);
 601                         tcy1 = int_ceildiv(pi->ty1, comp->dy);
 602                         if (comp->numresolutions > maxres) {
 603                                 maxres = comp->numresolutions;
 604                         }
 605
 606                         for (resno = 0; resno < comp->numresolutions; resno++) {
 607                                 int levelno;
 608                                 int rx0, ry0, rx1, ry1;
 609                                 int px0, py0, px1, py1;
 610                                 opj_pi_resolution_t *res = &comp->resolutions[resno];
 611                                 if (tccp->csty & J2K_CCP_CSTY_PRT) {
 612                                         res->pdx = tccp->prcw[resno];
 613                                         res->pdy = tccp->prch[resno];
 614                                 } else {
 615                                         res->pdx = 15;
 616                                         res->pdy = 15;
 617                                 }
 618                                 levelno = comp->numresolutions - 1 - resno;
 619                                 rx0 = int_ceildivpow2(tcx0, levelno);
 620                                 ry0 = int_ceildivpow2(tcy0, levelno);
 621                                 rx1 = int_ceildivpow2(tcx1, levelno);
 622                                 ry1 = int_ceildivpow2(tcy1, levelno);
 623                                 px0 = int_floordivpow2(rx0, res->pdx) << res->pdx;
 624                                 py0 = int_floordivpow2(ry0, res->pdy) << res->pdy;
 625                                 px1 = int_ceildivpow2(rx1, res->pdx) << res->pdx;
 626                                 py1 = int_ceildivpow2(ry1, res->pdy) << res->pdy;
 627                                 res->pw = (rx0==rx1)?0:((px1 - px0) >> res->pdx);
 628                                 res->ph = (ry0==ry1)?0:((py1 - py0) >> res->pdy);
 629
 630                                 if (res->pw*res->ph > maxprec) {
 631                                         maxprec = res->pw * res->ph;
 632                                 }
 633                         }
 634                 }
 635
 636                 tccp = &tcp->tccps[0];
 637                 pi[pino].step_p = 1;
 638                 pi[pino].step_c = maxprec * pi[pino].step_p;
 639                 pi[pino].step_r = image->numcomps * pi[pino].step_c;
 640                 pi[pino].step_l = maxres * pi[pino].step_r;
 641
 642                 for (compno = 0; compno < pi->numcomps; compno++) {
 643                         opj_pi_comp_t *comp = &pi->comps[compno];
 644                         for (resno = 0; resno < comp->numresolutions; resno++) {
 645                                 int dx, dy;
 646                                 opj_pi_resolution_t *res = &comp->resolutions[resno];
 647                                 dx = comp->dx * (1 << (res->pdx + comp->numresolutions - 1 - resno));
 648                                 dy = comp->dy * (1 << (res->pdy + comp->numresolutions - 1 - resno));
 649                                 pi[pino].dx = !pi->dx ? dx : int_min(pi->dx, dx);
 650                                 pi[pino].dy = !pi->dy ? dy : int_min(pi->dy, dy);
 651                         }
 652                 }
 653
 654                 if (pino == 0) {
 655                         array_size = (tcp->numpocs+1) * tcp->numlayers * pi[pino].step_l * sizeof(short int);
 656                         pi[pino].include = (short int *) opj_malloc(array_size);
 657                         if(!pi[pino].include) {
 658                                 pi_destroy(pi, cp, tileno);
 659                                 return NULL;
 660                         }
 661                 }
 662                 else {
 663                         pi[pino].include = pi[pino - 1].include;
 664                 }
 665
 666                 /* Generation of boundaries for each prog flag*/
 667                         if (tcp->POC == 1){
 668                                 tcp->pocs[pino].compS= tcp->pocs[pino].compno0;
 669                                 tcp->pocs[pino].compE= tcp->pocs[pino].compno1;
 670                                 tcp->pocs[pino].resS = tcp->pocs[pino].resno0;
 671                                 tcp->pocs[pino].resE = tcp->pocs[pino].resno1;
 672         tcp->pocs[pino].layE = tcp->pocs[pino].layno1;
 673                                 tcp->pocs[pino].prg  = tcp->pocs[pino].prg;
 674                         }else {
 675                                 tcp->pocs[pino].compS= 0;
 676                                 tcp->pocs[pino].compE= image->numcomps;
 677                                 tcp->pocs[pino].resS = 0;
 678                                 tcp->pocs[pino].resE = maxres;
 679                                 tcp->pocs[pino].layE = tcp->numlayers;
 680                                 tcp->pocs[pino].prg  = tcp->prg;
 681                         }
 682                         tcp->pocs[pino].layS = 0;
 683                         tcp->pocs[pino].prcS = 0;
 684                         tcp->pocs[pino].prcE = maxprec;;
 685                         tcp->pocs[pino].txS = pi[pino].tx0;
 686                         tcp->pocs[pino].txE = pi[pino].tx1;
 687                         tcp->pocs[pino].tyS = pi[pino].ty0;
 688                         tcp->pocs[pino].tyE = pi[pino].ty1;
 689                         tcp->pocs[pino].dx = pi[pino].dx;
 690                         tcp->pocs[pino].dy = pi[pino].dy;
 691                 }
 692                         return pi;
 693         }
 694
 695
 696
 697 void pi_destroy(opj_pi_iterator_t *pi, opj_cp_t *cp, int tileno) {
 698         int compno, pino;
 699         opj_tcp_t *tcp = &cp->tcps[tileno];
 700         if(pi) {
 701                 for (pino = 0; pino < tcp->numpocs + 1; pino++) {
 702                         if(pi[pino].comps) {
 703                                 for (compno = 0; compno < pi->numcomps; compno++) {
 704                                         opj_pi_comp_t *comp = &pi[pino].comps[compno];
 705                                         if(comp->resolutions) {
 706                                                 opj_free(comp->resolutions);
 707                                         }
 708                                 }
 709                                 opj_free(pi[pino].comps);
 710                         }
 711                 }
 712                 if(pi->include) {
 713                         opj_free(pi->include);
 714                 }
 715                 opj_free(pi);
 716         }
 717 }
 718
 719 bool pi_next(opj_pi_iterator_t * pi) {
 720         switch (pi->poc.prg) {
 721                 case LRCP:
 722                         return pi_next_lrcp(pi);
 723                 case RLCP:
 724                         return pi_next_rlcp(pi);
 725                 case RPCL:
 726                         return pi_next_rpcl(pi);
 727                 case PCRL:
 728                         return pi_next_pcrl(pi);
 729                 case CPRL:
 730                         return pi_next_cprl(pi);
 731                 case PROG_UNKNOWN:
 732                         return false;
 733         }
 734
 735         return false;
 736 }
 737
 738 int pi_check_next_level(int pos,opj_cp_t *cp,int tileno, int pino, char *prog){
 739         int i,l;
 740         opj_tcp_t *tcps =&cp->tcps[tileno];
 741         opj_poc_t *tcp = &tcps->pocs[pino];
 742         if(pos>=0){
 743                 for(i=pos;pos>=0;i--){
 744                         switch(prog[i]){
 745                 case 'R':
 746                         if(tcp->res_t==tcp->resE){
 747                                 l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
 748                                 if(l==1){
 749                                         return 1;
 750                                 }else{
 751                                         return 0;
 752                                 }
 753                         }else{
 754                                 return 1;
 755                         }
 756                         break;
 757                 case 'C':
 758                         if(tcp->comp_t==tcp->compE){
 759                                 l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
 760                                 if(l==1){
 761                                         return 1;
 762                                 }else{
 763                                         return 0;
 764                                 }
 765                         }else{
 766                                 return 1;
 767                         }
 768                         break;
 769                 case 'L':
 770                         if(tcp->lay_t==tcp->layE){
 771                                 l=pi_check_next_level(pos-1,cp,tileno,pino,prog);
 772                                 if(l==1){
 773                                         return 1;
 774                                 }else{
 775                                         return 0;
 776                                 }
 777                         }else{
 778                                 return 1;
 779                         }
 780                         break;
 781                 case 'P':
 782                         switch(tcp->prg){
 783                                 case LRCP||RLCP:
 784                                         if(tcp->prc_t == tcp->prcE){
 785                                                 l=pi_check_next_level(i-1,cp,tileno,pino,prog);
 786                                                 if(l==1){
 787                                                         return 1;
 788                                                 }else{
 789                                                         return 0;
 790                                                 }
 791                                         }else{
 792                                                 return 1;
 793                                         }
 794                                         break;
 795                         default:
 796                                 if(tcp->tx0_t == tcp->txE){
 797                                         //TY
 798                                         if(tcp->ty0_t == tcp->tyE){
 799                                                 l=pi_check_next_level(i-1,cp,tileno,pino,prog);
 800                                                 if(l==1){
 801                                                         return 1;
 802                                                 }else{
 803                                                         return 0;
 804                                                 }
 805                                         }else{
 806                                                 return 1;
 807                                         }//TY
 808                                 }else{
 809                                         return 1;
 810                                 }
 811                                 break;
 812                         }//end case P
 813                 }//end switch
 814                 }//end for
 815         }//end if
 816         return 0;
 817 }
 818
 819
 820 void pi_create_encode( opj_pi_iterator_t *pi, opj_cp_t *cp,int tileno, int pino,int tpnum, int tppos,char final_encoding) {
 821         char *prog;
 822         int i,l;
 823         int incr_top=1,resetX=0;
 824         opj_tcp_t *tcps =&cp->tcps[tileno];
 825         opj_poc_t *tcp= &tcps->pocs[pino];
 826         prog = j2k_convert_progression_order(tcp->prg);
 827
 828         pi[pino].first = 1;
 829         pi[pino].poc.prg = tcp->prg;
 830
 831         if(!(cp->tp_on & final_encoding)){
 832                 pi[pino].poc.resno0 = tcp->resS;
 833                 pi[pino].poc.resno1 = tcp->resE;
 834                 pi[pino].poc.compno0 = tcp->compS;
 835                 pi[pino].poc.compno1 = tcp->compE;
 836                 pi[pino].poc.layno0 = tcp->layS;
 837                 pi[pino].poc.layno1 = tcp->layE;
 838                 pi[pino].poc.precno0 = tcp->prcS;
 839                 pi[pino].poc.precno1 = tcp->prcE;
 840                 pi[pino].poc.tx0 = tcp->txS;
 841                 pi[pino].poc.ty0 = tcp->tyS;
 842                 pi[pino].poc.tx1 = tcp->txE;
 843                 pi[pino].poc.ty1 = tcp->tyE;
 844         }else {
 845                 for(i=tppos+1;i<4;i++){
 846                         switch(prog[i]){
 847                         case 'R':
 848                                 pi[pino].poc.resno0 = tcp->resS;
 849                                 pi[pino].poc.resno1 = tcp->resE;
 850                                 break;
 851                         case 'C':
 852                                 pi[pino].poc.compno0 = tcp->compS;
 853                                 pi[pino].poc.compno1 = tcp->compE;
 854                                 break;
 855                         case 'L':
 856                                 pi[pino].poc.layno0 = tcp->layS;
 857                                 pi[pino].poc.layno1 = tcp->layE;
 858                                 break;
 859                         case 'P':
 860                                 switch(tcp->prg){
 861                                         case LRCP:
 862                                         case RLCP:
 863                                                 pi[pino].poc.precno0 = tcp->prcS;
 864                                                 pi[pino].poc.precno1 = tcp->prcE;
 865                                                 break;
 866                                         default:
 867                                                 pi[pino].poc.tx0 = tcp->txS;
 868                                                 pi[pino].poc.ty0 = tcp->tyS;
 869                                                 pi[pino].poc.tx1 = tcp->txE;
 870                                                 pi[pino].poc.ty1 = tcp->tyE;
 871                                                 break;
 872                                 }
 873                                 break;
 874                         }
 875                 }
 876
 877                 if(tpnum==0){
 878                         for(i=tppos;i>=0;i--){
 879                                 switch(prog[i]){
 880                                                 case 'C':
 881                                                         tcp->comp_t = tcp->compS;
 882                                                         pi[pino].poc.compno0 = tcp->comp_t;
 883                                                         pi[pino].poc.compno1 = tcp->comp_t+1;
 884                                                         tcp->comp_t+=1;
 885                                                         break;
 886                                                 case 'R':
 887                                                         tcp->res_t = tcp->resS;
 888                                                         pi[pino].poc.resno0 = tcp->res_t;
 889                                                         pi[pino].poc.resno1 = tcp->res_t+1;
 890                                                         tcp->res_t+=1;
 891                                                         break;
 892                                                 case 'L':
 893                                                         tcp->lay_t = tcp->layS;
 894                                                         pi[pino].poc.layno0 = tcp->lay_t;
 895                                                         pi[pino].poc.layno1 = tcp->lay_t+1;
 896                                                         tcp->lay_t+=1;
 897                                                         break;
 898                                                 case 'P':
 899                                                         switch(tcp->prg){
 900                                                                 case LRCP:
 901                                                                 case RLCP:
 902                                                                         tcp->prc_t = tcp->prcS;
 903                                                                         pi[pino].poc.precno0 = tcp->prc_t;
 904                                                                         pi[pino].poc.precno1 = tcp->prc_t+1;
 905                                                                         tcp->prc_t+=1;
 906                                                                         break;
 907                                                                 default:
 908                                                                         tcp->tx0_t = tcp->txS;
 909                                                                         tcp->ty0_t = tcp->tyS;
 910                                                                         pi[pino].poc.tx0 = tcp->tx0_t;
 911                                                                         pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx - (tcp->tx0_t % tcp->dx);
 912                                                                         pi[pino].poc.ty0 = tcp->ty0_t;
 913                                                                         pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
 914                                                                         tcp->tx0_t = pi[pino].poc.tx1;
 915                                                                         tcp->ty0_t = pi[pino].poc.ty1;
 916                                                                         break;
 917                                                         }
 918                                                         break;
 919                                 }
 920                         }
 921                         incr_top=1;
 922                 }else{
 923                         for(i=tppos;i>=0;i--){
 924                                 switch(prog[i]){
 925                                                 case 'C':
 926                                                         pi[pino].poc.compno0 = tcp->comp_t-1;
 927                                                         pi[pino].poc.compno1 = tcp->comp_t;
 928                                                         break;
 929                                                 case 'R':
 930                                                         pi[pino].poc.resno0 = tcp->res_t-1;
 931                                                         pi[pino].poc.resno1 = tcp->res_t;
 932                                                         break;
 933                                                 case 'L':
 934                                                         pi[pino].poc.layno0 = tcp->lay_t-1;
 935                                                         pi[pino].poc.layno1 = tcp->lay_t;
 936                                                         break;
 937                                                 case 'P':
 938                                                         switch(tcp->prg){
 939                                                                 case LRCP:
 940                                                                 case RLCP:
 941                                                                         pi[pino].poc.precno0 = tcp->prc_t-1;
 942                                                                         pi[pino].poc.precno1 = tcp->prc_t;
 943                                                                         break;
 944                                                                 default:
 945                                                                         pi[pino].poc.tx0 = tcp->tx0_t - tcp->dx - (tcp->tx0_t % tcp->dx);
 946                                                                         pi[pino].poc.tx1 = tcp->tx0_t ;
 947                                                                         pi[pino].poc.ty0 = tcp->ty0_t - tcp->dy - (tcp->ty0_t % tcp->dy);
 948                                                                         pi[pino].poc.ty1 = tcp->ty0_t ;
 949                                                                         break;
 950                                                         }
 951                                                         break;
 952                                 }
 953                                 if(incr_top==1){
 954                                         switch(prog[i]){
 955                                                         case 'R':
 956                                                                 if(tcp->res_t==tcp->resE){
 957                                                                         l=pi_check_next_level(i-1,cp,tileno,pino,prog);
 958                                                                         if(l==1){
 959                                                                                 tcp->res_t = tcp->resS;
 960                                                                                 pi[pino].poc.resno0 = tcp->res_t;
 961                                                                                 pi[pino].poc.resno1 = tcp->res_t+1;
 962                                                                                 tcp->res_t+=1;
 963                                                                                 incr_top=1;
 964                                                                         }else{
 965                                                                                 incr_top=0;
 966                                                                         }
 967                                                                 }else{
 968                                                                         pi[pino].poc.resno0 = tcp->res_t;
 969                                                                         pi[pino].poc.resno1 = tcp->res_t+1;
 970                                                                         tcp->res_t+=1;
 971                                                                         incr_top=0;
 972                                                                 }
 973                                                                 break;
 974                                                         case 'C':
 975                                                                 if(tcp->comp_t ==tcp->compE){
 976                                                                         l=pi_check_next_level(i-1,cp,tileno,pino,prog);
 977                                                                         if(l==1){
 978                                                                                 tcp->comp_t = tcp->compS;
 979                                                                                 pi[pino].poc.compno0 = tcp->comp_t;
 980                                                                                 pi[pino].poc.compno1 = tcp->comp_t+1;
 981                                                                                 tcp->comp_t+=1;
 982                                                                                 incr_top=1;
 983                                                                         }else{
 984                                                                                 incr_top=0;
 985                                                                         }
 986                                                                 }else{
 987                                                                         pi[pino].poc.compno0 = tcp->comp_t;
 988                                                                         pi[pino].poc.compno1 = tcp->comp_t+1;
 989                                                                         tcp->comp_t+=1;
 990                                                                         incr_top=0;
 991                                                                 }
 992                                                                 break;
 993                                                         case 'L':
 994                                                                 if(tcp->lay_t == tcp->layE){
 995                                                                         l=pi_check_next_level(i-1,cp,tileno,pino,prog);
 996                                                                         if(l==1){
 997                                                                                 tcp->lay_t = tcp->layS;
 998                                                                                 pi[pino].poc.layno0 = tcp->lay_t;
 999                                                                                 pi[pino].poc.layno1 = tcp->lay_t+1;
1000                                                                                 tcp->lay_t+=1;
1001                                                                                 incr_top=1;
1002                                                                         }else{
1003                                                                                 incr_top=0;
1004                                                                         }
1005                                                                 }else{
1006                                                                         pi[pino].poc.layno0 = tcp->lay_t;
1007                                                                         pi[pino].poc.layno1 = tcp->lay_t+1;
1008                                                                         tcp->lay_t+=1;
1009                                                                         incr_top=0;
1010                                                                 }
1011                                                                 break;
1012                                                         case 'P':
1013                                                                 switch(tcp->prg){
1014                                                                         case LRCP:
1015                                                                         case RLCP:
1016                                                                                 if(tcp->prc_t == tcp->prcE){
1017                                                                                         l=pi_check_next_level(i-1,cp,tileno,pino,prog);
1018                                                                                         if(l==1){
1019                                                                                                 tcp->prc_t = tcp->prcS;
1020                                                                                                 pi[pino].poc.precno0 = tcp->prc_t;
1021                                                                                                 pi[pino].poc.precno1 = tcp->prc_t+1;
1022                                                                                                 tcp->prc_t+=1;
1023                                                                                                 incr_top=1;
1024                                                                                         }else{
1025                                                                                                 incr_top=0;
1026                                                                                         }
1027                                                                                 }else{
1028                                                                                         pi[pino].poc.precno0 = tcp->prc_t;
1029                                                                                         pi[pino].poc.precno1 = tcp->prc_t+1;
1030                                                                                         tcp->prc_t+=1;
1031                                                                                         incr_top=0;
1032                                                                                 }
1033                                                                                 break;
1034                                                                         default:
1035                                                                                 if(tcp->tx0_t >= tcp->txE){
1036                                                                                         if(tcp->ty0_t >= tcp->tyE){
1037                                                                                                 l=pi_check_next_level(i-1,cp,tileno,pino,prog);
1038                                                                                                 if(l==1){
1039                                                                                                         tcp->ty0_t = tcp->tyS;
1040                                                                                                         pi[pino].poc.ty0 = tcp->ty0_t;
1041                                                                                                         pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
1042                                                                                                         tcp->ty0_t = pi[pino].poc.ty1;
1043                                                                                                         incr_top=1;resetX=1;
1044                                                                                                 }else{
1045                                                                                                         incr_top=0;resetX=0;
1046                                                                                                 }
1047                                                                                         }else{
1048                                                                                                 pi[pino].poc.ty0 = tcp->ty0_t;
1049                                                                                                 pi[pino].poc.ty1 = tcp->ty0_t + tcp->dy - (tcp->ty0_t % tcp->dy);
1050                                                                                                 tcp->ty0_t = pi[pino].poc.ty1;
1051                                                                                                 incr_top=0;resetX=1;
1052                                                                                         }
1053                                                                                         if(resetX==1){
1054                                                                                                 tcp->tx0_t = tcp->txS;
1055                                                                                                 pi[pino].poc.tx0 = tcp->tx0_t;
1056                                                                                                 pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx- (tcp->tx0_t % tcp->dx);
1057                                                                                                 tcp->tx0_t = pi[pino].poc.tx1;
1058                                                                                         }
1059                                                                                 }else{
1060                                                                                         pi[pino].poc.tx0 = tcp->tx0_t;
1061                                                                                         pi[pino].poc.tx1 = tcp->tx0_t + tcp->dx- (tcp->tx0_t % tcp->dx);
1062                                                                                         tcp->tx0_t = pi[pino].poc.tx1;
1063                                                                                         incr_top=0;
1064                                                                                 }
1065                                                                                 break;
1066                                                                 }
1067                                                                 break;
1068                                         }
1069                                 }
1070                         }
1071                 }
1072         }
1073 }
1074
1075