openjpeg/libopenjpeg/j2k.c

/*
 * Copyright (c) 2001-2002, David Janssens
 * Copyright (c) 2002-2004, Yannick Verschueren
 * Copyright (c) 2002-2004, Communications and remote sensing Laboratory, Universite catholique de Louvain, Belgium
 * 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <setjmp.h>
#include <math.h>

#include "j2k.h"
#include "cio.h"
#include "tcd.h"
#include "dwt.h"
#include "int.h"
#include "jpt.h"

#define J2K_MS_SOC 0xff4f
#define J2K_MS_SOT 0xff90
#define J2K_MS_SOD 0xff93
#define J2K_MS_EOC 0xffd9
#define J2K_MS_SIZ 0xff51
#define J2K_MS_COD 0xff52
#define J2K_MS_COC 0xff53
#define J2K_MS_RGN 0xff5e
#define J2K_MS_QCD 0xff5c
#define J2K_MS_QCC 0xff5d
#define J2K_MS_POC 0xff5f
#define J2K_MS_TLM 0xff55
#define J2K_MS_PLM 0xff57
#define J2K_MS_PLT 0xff58
#define J2K_MS_PPM 0xff60
#define J2K_MS_PPT 0xff61
#define J2K_MS_SOP 0xff91
#define J2K_MS_EPH 0xff92
#define J2K_MS_CRG 0xff63
#define J2K_MS_COM 0xff64

#define J2K_STATE_MHSOC 0x0001
#define J2K_STATE_MHSIZ 0x0002
#define J2K_STATE_MH 0x0004
#define J2K_STATE_TPHSOT 0x0008
#define J2K_STATE_TPH 0x0010
#define J2K_STATE_MT 0x0020
#define J2K_STATE_NEOC 0x0040


jmp_buf j2k_error;

static int j2k_state;
static int j2k_curtileno;
static j2k_tcp_t j2k_default_tcp;
static unsigned char *j2k_eot;
static int j2k_sot_start;
static int pos_correction;

static j2k_image_t *j2k_img;
static j2k_cp_t *j2k_cp;

static unsigned char **j2k_tile_data;
static int *j2k_tile_len;

static info_image info_IM;

/* Add Patrick */
void j2k_clean()
{
  int tileno = 0;
  tcd_free_encode(j2k_img, j2k_cp, j2k_curtileno);

  if (info_IM.index_on) {
    for (tileno = 0; tileno < j2k_cp->tw * j2k_cp->th; tileno++) {
      free(info_IM.tile[tileno].packet);
    }
    free(info_IM.tile);
  }
}

/* \Add Patrick */

void j2k_dump_image(j2k_image_t * img)
{
  int compno;
  fprintf(stderr, "image {\n");
  fprintf(stderr, "  x0=%d, y0=%d, x1=%d, y1=%d\n", img->x0, img->y0,
	  img->x1, img->y1);
  fprintf(stderr, "  numcomps=%d\n", img->numcomps);
  for (compno = 0; compno < img->numcomps; compno++) {
    j2k_comp_t *comp = &img->comps[compno];
    fprintf(stderr, "  comp %d {\n", compno);
    fprintf(stderr, "    dx=%d, dy=%d\n", comp->dx, comp->dy);
    fprintf(stderr, "    prec=%d\n", comp->prec);
    fprintf(stderr, "    sgnd=%d\n", comp->sgnd);
    fprintf(stderr, "  }\n");
  }
  fprintf(stderr, "}\n");
}

void j2k_dump_cp(j2k_image_t * img, j2k_cp_t * cp)
{
  int tileno, compno, layno, bandno, resno, numbands;
  fprintf(stderr, "coding parameters {\n");
  fprintf(stderr, "  tx0=%d, ty0=%d\n", cp->tx0, cp->ty0);
  fprintf(stderr, "  tdx=%d, tdy=%d\n", cp->tdx, cp->tdy);
  fprintf(stderr, "  tw=%d, th=%d\n", cp->tw, cp->th);
  for (tileno = 0; tileno < cp->tw * cp->th; tileno++) {
    j2k_tcp_t *tcp = &cp->tcps[tileno];
    fprintf(stderr, "  tile %d {\n", tileno);
    fprintf(stderr, "    csty=%x\n", tcp->csty);
    fprintf(stderr, "    prg=%d\n", tcp->prg);
    fprintf(stderr, "    numlayers=%d\n", tcp->numlayers);
    fprintf(stderr, "    mct=%d\n", tcp->mct);
    fprintf(stderr, "    rates=");
    for (layno = 0; layno < tcp->numlayers; layno++) {
      fprintf(stderr, "%d ", tcp->rates[layno]);
    }
    fprintf(stderr, "\n");
    for (compno = 0; compno < img->numcomps; compno++) {
      j2k_tccp_t *tccp = &tcp->tccps[compno];
      fprintf(stderr, "    comp %d {\n", compno);
      fprintf(stderr, "      csty=%x\n", tccp->csty);
      fprintf(stderr, "      numresolutions=%d\n", tccp->numresolutions);
      fprintf(stderr, "      cblkw=%d\n", tccp->cblkw);
      fprintf(stderr, "      cblkh=%d\n", tccp->cblkh);
      fprintf(stderr, "      cblksty=%x\n", tccp->cblksty);
      fprintf(stderr, "      qmfbid=%d\n", tccp->qmfbid);
      fprintf(stderr, "      qntsty=%d\n", tccp->qntsty);
      fprintf(stderr, "      numgbits=%d\n", tccp->numgbits);
      fprintf(stderr, "      roishift=%d\n", tccp->roishift);
      fprintf(stderr, "      stepsizes=");
      numbands =
	tccp->qntsty ==
	J2K_CCP_QNTSTY_SIQNT ? 1 : tccp->numresolutions * 3 - 2;
      for (bandno = 0; bandno < numbands; bandno++) {
	fprintf(stderr, "(%d,%d) ", tccp->stepsizes[bandno].mant,
		tccp->stepsizes[bandno].expn);
      }
      fprintf(stderr, "\n");

      if (tccp->csty & J2K_CCP_CSTY_PRT) {
	fprintf(stderr, "      prcw=");
	for (resno = 0; resno < tccp->numresolutions; resno++) {
	  fprintf(stderr, "%d ", tccp->prcw[resno]);
	}
	fprintf(stderr, "\n");
	fprintf(stderr, "      prch=");
	for (resno = 0; resno < tccp->numresolutions; resno++) {
	  fprintf(stderr, "%d ", tccp->prch[resno]);
	}
	fprintf(stderr, "\n");
      }
      fprintf(stderr, "    }\n");
    }
    fprintf(stderr, "  }\n");
  }
  fprintf(stderr, "}\n");
}

void j2k_write_soc()
{
  cio_write(J2K_MS_SOC, 2);
}

void j2k_read_soc()
{
  j2k_state = J2K_STATE_MHSIZ;
}

void j2k_write_siz()
{
  int i;
  int lenp, len;

  cio_write(J2K_MS_SIZ, 2);	/* SIZ                 */
  lenp = cio_tell();
  cio_skip(2);
  cio_write(0, 2);		/* Rsiz (capabilities) */
  cio_write(j2k_img->x1, 4);	/* Xsiz                */
  cio_write(j2k_img->y1, 4);	/* Ysiz                */
  cio_write(j2k_img->x0, 4);	/* X0siz               */
  cio_write(j2k_img->y0, 4);	/* Y0siz               */
  cio_write(j2k_cp->tdx, 4);	/* XTsiz               */
  cio_write(j2k_cp->tdy, 4);	/* YTsiz               */
  cio_write(j2k_cp->tx0, 4);	/* XT0siz              */
  cio_write(j2k_cp->ty0, 4);	/* YT0siz              */
  cio_write(j2k_img->numcomps, 2);	/* Csiz                */
  for (i = 0; i < j2k_img->numcomps; i++) {
    cio_write(j2k_img->comps[i].prec - 1 + (j2k_img->comps[i].sgnd << 7), 1);	/* Ssiz_i */
    cio_write(j2k_img->comps[i].dx, 1);	/* XRsiz_i             */
    cio_write(j2k_img->comps[i].dy, 1);	/* YRsiz_i             */
  }
  len = cio_tell() - lenp;
  cio_seek(lenp);
  cio_write(len, 2);		/* Lsiz                */
  cio_seek(lenp + len);

}

void j2k_read_siz()
{
  int len, i;

  len = cio_read(2);		/* Lsiz                */
  cio_read(2);			/* Rsiz (capabilities) */
  j2k_img->x1 = cio_read(4);	/* Xsiz                */
  j2k_img->y1 = cio_read(4);	/* Ysiz                */
  j2k_img->x0 = cio_read(4);	/* X0siz               */
  j2k_img->y0 = cio_read(4);	/* Y0siz               */
  j2k_cp->tdx = cio_read(4);	/* XTsiz               */
  j2k_cp->tdy = cio_read(4);	/* YTsiz               */
  j2k_cp->tx0 = cio_read(4);	/* XT0siz              */
  j2k_cp->ty0 = cio_read(4);	/* YT0siz              */

  j2k_img->numcomps = cio_read(2);	/* Csiz                */
  j2k_img->comps =
    (j2k_comp_t *) malloc(j2k_img->numcomps * sizeof(j2k_comp_t));
  for (i = 0; i < j2k_img->numcomps; i++) {
    int tmp, w, h;
    tmp = cio_read(1);		/* Ssiz_i          */
    j2k_img->comps[i].prec = (tmp & 0x7f) + 1;
    j2k_img->comps[i].sgnd = tmp >> 7;
    j2k_img->comps[i].dx = cio_read(1);	/* XRsiz_i         */
    j2k_img->comps[i].dy = cio_read(1);	/* YRsiz_i         */
    w = int_ceildiv(j2k_img->x1 - j2k_img->x0, j2k_img->comps[i].dx);
    h = int_ceildiv(j2k_img->y1 - j2k_img->y0, j2k_img->comps[i].dy);
    j2k_img->comps[i].resno_decoded = 0;	/* number of resolution decoded */
    j2k_img->comps[i].factor = 0;	/* reducing factor by component */
  }

  j2k_cp->tw = int_ceildiv(j2k_img->x1 - j2k_cp->tx0, j2k_cp->tdx);
  j2k_cp->th = int_ceildiv(j2k_img->y1 - j2k_cp->ty0, j2k_cp->tdy);
  j2k_cp->tcps =
    (j2k_tcp_t *) calloc(j2k_cp->tw * j2k_cp->th, sizeof(j2k_tcp_t));
  j2k_cp->tileno = (int *) calloc(j2k_cp->tw * j2k_cp->th, sizeof(int));
  j2k_cp->tileno_size = 0;

  for (i = 0; i < j2k_cp->tw * j2k_cp->th; i++) {
    j2k_cp->tcps[i].POC = 0;
    j2k_cp->tcps[i].numpocs = 0;
    j2k_cp->tcps[i].first = 1;
  }

  /* Initialization for PPM marker */
  j2k_cp->ppm = 0;
  j2k_cp->ppm_data = NULL;
  j2k_cp->ppm_previous = 0;
  j2k_cp->ppm_store = 0;

  j2k_default_tcp.tccps =
    (j2k_tccp_t *) calloc(sizeof(j2k_tccp_t), j2k_img->numcomps);
  for (i = 0; i < j2k_cp->tw * j2k_cp->th; i++) {
    j2k_cp->tcps[i].tccps =
      (j2k_tccp_t *) calloc(sizeof(j2k_tccp_t), j2k_img->numcomps);
  }
  j2k_tile_data =
    (unsigned char **) calloc(j2k_cp->tw * j2k_cp->th, sizeof(char *));
  j2k_tile_len = (int *) calloc(j2k_cp->tw * j2k_cp->th, sizeof(int));
  j2k_state = J2K_STATE_MH;


}

void j2k_write_com()
{
  unsigned int i;
  int lenp, len;
  char str[256];
  sprintf(str, "%s", j2k_cp->comment);

  cio_write(J2K_MS_COM, 2);
  lenp = cio_tell();
  cio_skip(2);
  cio_write(0, 2);
  for (i = 0; i < strlen(str); i++) {
    cio_write(str[i], 1);
  }
  len = cio_tell() - lenp;
  cio_seek(lenp);
  cio_write(len, 2);
  cio_seek(lenp + len);

}

void j2k_read_com()
{
  int len;

  len = cio_read(2);
  cio_skip(len - 2);

}

void j2k_write_cox(int compno)
{
  int i;
  j2k_tcp_t *tcp;
  j2k_tccp_t *tccp;
  tcp = &j2k_cp->tcps[j2k_curtileno];
  tccp = &tcp->tccps[compno];

  cio_write(tccp->numresolutions - 1, 1);	/* SPcox (D) */
  cio_write(tccp->cblkw - 2, 1);	/* SPcox (E) */
  cio_write(tccp->cblkh - 2, 1);	/* SPcox (F) */
  cio_write(tccp->cblksty, 1);	/* SPcox (G) */
  cio_write(tccp->qmfbid, 1);	/* SPcox (H) */

  if (tccp->csty & J2K_CCP_CSTY_PRT) {
    for (i = 0; i < tccp->numresolutions; i++) {
      cio_write(tccp->prcw[i] + (tccp->prch[i] << 4), 1);	/* SPcox (I_i) */
    }
  }
}

void j2k_read_cox(int compno)
{
  int i;
  j2k_tcp_t *tcp;
  j2k_tccp_t *tccp;
  tcp =
    j2k_state ==
    J2K_STATE_TPH ? &j2k_cp->tcps[j2k_curtileno] : &j2k_default_tcp;
  tccp = &tcp->tccps[compno];
  tccp->numresolutions = cio_read(1) + 1;	/* SPcox (D) */
  tccp->cblkw = cio_read(1) + 2;	/* SPcox (E) */
  tccp->cblkh = cio_read(1) + 2;	/* SPcox (F) */
  tccp->cblksty = cio_read(1);	/* SPcox (G) */
  tccp->qmfbid = cio_read(1);	/* SPcox (H) */
  if (tccp->csty & J2K_CP_CSTY_PRT) {
    for (i = 0; i < tccp->numresolutions; i++) {
      int tmp = cio_read(1);	/* SPcox (I_i) */
      tccp->prcw[i] = tmp & 0xf;
      tccp->prch[i] = tmp >> 4;
    }
  }
}

void j2k_write_cod()
{
  j2k_tcp_t *tcp;
  int lenp, len;

  cio_write(J2K_MS_COD, 2);	/* COD */

  lenp = cio_tell();
  cio_skip(2);

  tcp = &j2k_cp->tcps[j2k_curtileno];
  cio_write(tcp->csty, 1);	/* Scod */
  cio_write(tcp->prg, 1);	/* SGcod (A) */
  cio_write(tcp->numlayers, 2);	/* SGcod (B) */
  cio_write(tcp->mct, 1);	/* SGcod (C) */

  j2k_write_cox(0);
  len = cio_tell() - lenp;
  cio_seek(lenp);
  cio_write(len, 2);		/* Lcod */
  cio_seek(lenp + len);
}

void j2k_read_cod()
{
  int len, i, pos;
  j2k_tcp_t *tcp;

  tcp =
    j2k_state ==
    J2K_STATE_TPH ? &j2k_cp->tcps[j2k_curtileno] : &j2k_default_tcp;
  len = cio_read(2);		/* Lcod */
  tcp->csty = cio_read(1);	/* Scod */
  tcp->prg = cio_read(1);	/* SGcod (A) */
  tcp->numlayers = cio_read(2);	/* SGcod (B) */
  tcp->mct = cio_read(1);	/* SGcod (C) */

  pos = cio_tell();
  for (i = 0; i < j2k_img->numcomps; i++) {
    tcp->tccps[i].csty = tcp->csty & J2K_CP_CSTY_PRT;
    cio_seek(pos);
    j2k_read_cox(i);
  }
}

void j2k_write_coc(int compno)
{
  j2k_tcp_t *tcp;
  int lenp, len;

  cio_write(J2K_MS_COC, 2);	/* COC */
  lenp = cio_tell();
  cio_skip(2);
  tcp = &j2k_cp->tcps[j2k_curtileno];
  cio_write(compno, j2k_img->numcomps <= 256 ? 1 : 2);	/* Ccoc */
  cio_write(tcp->tccps[compno].csty, 1);	/* Scoc */
  j2k_write_cox(compno);
  len = cio_tell() - lenp;
  cio_seek(lenp);
  cio_write(len, 2);		/* Lcoc */
  cio_seek(lenp + len);
}

void j2k_read_coc()
{
  int len, compno;
  j2k_tcp_t *tcp;

  tcp =
    j2k_state ==
    J2K_STATE_TPH ? &j2k_cp->tcps[j2k_curtileno] : &j2k_default_tcp;
  len = cio_read(2);		/* Lcoc */
  compno = cio_read(j2k_img->numcomps <= 256 ? 1 : 2);	/* Ccoc */
  tcp->tccps[compno].csty = cio_read(1);	/* Scoc */
  j2k_read_cox(compno);
}

void j2k_write_qcx(int compno)
{
  j2k_tcp_t *tcp;
  j2k_tccp_t *tccp;
  int bandno, numbands;
  int expn, mant;

  tcp = &j2k_cp->tcps[j2k_curtileno];
  tccp = &tcp->tccps[compno];

  cio_write(tccp->qntsty + (tccp->numgbits << 5), 1);	/* Sqcx */
  numbands =
    tccp->qntsty ==
    J2K_CCP_QNTSTY_SIQNT ? 1 : tccp->numresolutions * 3 - 2;

  for (bandno = 0; bandno < numbands; bandno++) {
    expn = tccp->stepsizes[bandno].expn;
    mant = tccp->stepsizes[bandno].mant;

    if (tccp->qntsty == J2K_CCP_QNTSTY_NOQNT) {
      cio_write(expn << 3, 1);	/* SPqcx_i */
    } else {
      cio_write((expn << 11) + mant, 2);	/* SPqcx_i */
    }
  }

}

void j2k_read_qcx(int compno, int len)
{
  int tmp;
  j2k_tcp_t *tcp;
  j2k_tccp_t *tccp;
  int bandno, numbands;

  tcp =
    j2k_state ==
    J2K_STATE_TPH ? &j2k_cp->tcps[j2k_curtileno] : &j2k_default_tcp;
  tccp = &tcp->tccps[compno];
  tmp = cio_read(1);		/* Sqcx */
  tccp->qntsty = tmp & 0x1f;
  tccp->numgbits = tmp >> 5;
  numbands =
    tccp->qntsty == J2K_CCP_QNTSTY_SIQNT ? 1 : (tccp->qntsty ==
						J2K_CCP_QNTSTY_NOQNT ?
						len - 1 : (len - 1) / 2);
  for (bandno = 0; bandno < numbands; bandno++) {
    int expn, mant;
    if (tccp->qntsty == J2K_CCP_QNTSTY_NOQNT) {
      expn = cio_read(1) >> 3;	/* SPqcx_i */
      mant = 0;
    } else {
      tmp = cio_read(2);	/* SPqcx_i */
      expn = tmp >> 11;
      mant = tmp & 0x7ff;
    }
    tccp->stepsizes[bandno].expn = expn;
    tccp->stepsizes[bandno].mant = mant;
  }



  /* Add Antonin : if scalar_derived -> compute other stepsizes */



  if (tccp->qntsty==J2K_CCP_QNTSTY_SIQNT) {

    for (bandno=1 ; bandno<J2K_MAXBANDS ; bandno++) {

      tccp->stepsizes[bandno].expn = ((tccp->stepsizes[0].expn)-((bandno-1)/3)>0)?(tccp->stepsizes[0].expn)-((bandno-1)/3):0;

      tccp->stepsizes[bandno].mant = tccp->stepsizes[0].mant;

    }

  }



  /* ddA */
}

void j2k_write_qcd()
{
  int lenp, len;

  cio_write(J2K_MS_QCD, 2);	/* QCD */
  lenp = cio_tell();
  cio_skip(2);
  j2k_write_qcx(0);
  len = cio_tell() - lenp;
  cio_seek(lenp);
  cio_write(len, 2);		/* Lqcd */
  cio_seek(lenp + len);
}

void j2k_read_qcd()
{
  int len, i, pos;

  len = cio_read(2);		/* Lqcd */
  pos = cio_tell();
  for (i = 0; i < j2k_img->numcomps; i++) {
    cio_seek(pos);
    j2k_read_qcx(i, len - 2);
  }
}

void j2k_write_qcc(int compno)
{
  int lenp, len;

  cio_write(J2K_MS_QCC, 2);	/* QCC */
  lenp = cio_tell();
  cio_skip(2);
  cio_write(compno, j2k_img->numcomps <= 256 ? 1 : 2);	/* Cqcc */
  j2k_write_qcx(compno);
  len = cio_tell() - lenp;
  cio_seek(lenp);
  cio_write(len, 2);		/* Lqcc */
  cio_seek(lenp + len);
}

void j2k_read_qcc()
{
  int len, compno;

  len = cio_read(2);		/* Lqcc */
  compno = cio_read(j2k_img->numcomps <= 256 ? 1 : 2);	/* Cqcc */
  j2k_read_qcx(compno, len - 2 - (j2k_img->numcomps <= 256 ? 1 : 2));
}

void j2k_write_poc()
{
  int len, numpchgs, i;
  j2k_tcp_t *tcp;
  j2k_tccp_t *tccp;

  tcp = &j2k_cp->tcps[j2k_curtileno];
  tccp = &tcp->tccps[0];
  numpchgs = tcp->numpocs;
  cio_write(J2K_MS_POC, 2);	/* POC  */
  len = 2 + (5 + 2 * (j2k_img->numcomps <= 256 ? 1 : 2)) * numpchgs;
  cio_write(len, 2);		/* Lpoc */
  for (i = 0; i < numpchgs; i++) {
    // MODIF
    j2k_poc_t *poc;
    poc = &tcp->pocs[i];
    cio_write(poc->resno0, 1);	/* RSpoc_i */
    cio_write(poc->compno0, (j2k_img->numcomps <= 256 ? 1 : 2));	/* CSpoc_i */
    cio_write(poc->layno1, 2);	/* LYEpoc_i */
    poc->layno1 = int_min(poc->layno1, tcp->numlayers);
    cio_write(poc->resno1, 1);	/* REpoc_i */
    poc->resno1 = int_min(poc->resno1, tccp->numresolutions);
    cio_write(poc->compno1, (j2k_img->numcomps <= 256 ? 1 : 2));	/* CEpoc_i */
    poc->compno1 = int_min(poc->compno1, j2k_img->numcomps);
    cio_write(poc->prg, 1);	/* Ppoc_i */
  }
}

void j2k_read_poc()
{
  int len, numpchgs, i, old_poc;
  j2k_tcp_t *tcp;
  j2k_tccp_t *tccp;

  tcp =
    j2k_state ==
    J2K_STATE_TPH ? &j2k_cp->tcps[j2k_curtileno] : &j2k_default_tcp;

  old_poc = tcp->POC ? tcp->numpocs + 1 : 0;
  tcp->POC = 1;
  tccp = &tcp->tccps[0];
  len = cio_read(2);		/* Lpoc */
  numpchgs = (len - 2) / (5 + 2 * (j2k_img->numcomps <= 256 ? 1 : 2));

  for (i = old_poc; i < numpchgs + old_poc; i++) {
    j2k_poc_t *poc;
    poc = &tcp->pocs[i];
    poc->resno0 = cio_read(1);	/* RSpoc_i */
    poc->compno0 = cio_read(j2k_img->numcomps <= 256 ? 1 : 2);	/* CSpoc_i */
    poc->layno1 = int_min(cio_read(2), tcp->numlayers);	/* LYEpoc_i */
    poc->resno1 = int_min(cio_read(1), tccp->numresolutions);	/* REpoc_i */
    poc->compno1 = int_min(cio_read(j2k_img->numcomps <= 256 ? 1 : 2), j2k_img->numcomps);	/* CEpoc_i */
    poc->prg = cio_read(1);	/* Ppoc_i */
  }

  tcp->numpocs = numpchgs + old_poc - 1;
}

void j2k_read_crg()
{
  int len, i, Xcrg_i, Ycrg_i;

  len = cio_read(2);		/* Lcrg */
  for (i = 0; i < j2k_img->numcomps; i++) {
    Xcrg_i = cio_read(2);	/* Xcrg_i */
    Ycrg_i = cio_read(2);	/* Ycrg_i */
  }
}

void j2k_read_tlm()
{
  int len, Ztlm, Stlm, ST, SP, tile_tlm, i;
  long int Ttlm_i, Ptlm_i;

  len = cio_read(2);		/* Ltlm */
  Ztlm = cio_read(1);		/* Ztlm */
  Stlm = cio_read(1);		/* Stlm */
  ST = ((Stlm >> 4) & 0x01) + ((Stlm >> 4) & 0x02);
  SP = (Stlm >> 6) & 0x01;
  tile_tlm = (len - 4) / ((SP + 1) * 2 + ST);
  for (i = 0; i < tile_tlm; i++) {
    Ttlm_i = cio_read(ST);	/* Ttlm_i */
    Ptlm_i = cio_read(SP ? 4 : 2);	/* Ptlm_i */
  }
}

void j2k_read_plm()
{
  int len, i, Zplm, Nplm, add, packet_len = 0;

  len = cio_read(2);		/* Lplm */
  Zplm = cio_read(1);		/* Zplm */
  len -= 3;
  while (len > 0) {
    Nplm = cio_read(4);		/* Nplm */
    len -= 4;
    for (i = Nplm; i > 0; i--) {
      add = cio_read(1);
      len--;
      packet_len = (packet_len << 7) + add;	/* Iplm_ij */
      if ((add & 0x80) == 0) {
	/* New packet */
	packet_len = 0;
      }
      if (len <= 0)
	break;
    }
  }
}

void j2k_read_plt()
{
  int len, i, Zplt, packet_len = 0, add;

  len = cio_read(2);		/* Lplt */
  Zplt = cio_read(1);		/* Zplt */
  for (i = len - 3; i > 0; i--) {
    add = cio_read(1);
    packet_len = (packet_len << 7) + add;	/* Iplt_i */
    if ((add & 0x80) == 0) {
      /* New packet */
      packet_len = 0;
    }
  }
}

void j2k_read_ppm()
{
  int len, Z_ppm, i, j;
  int N_ppm;

  len = cio_read(2);
  j2k_cp->ppm = 1;

  Z_ppm = cio_read(1);		/* Z_ppm */
  len -= 3;
  while (len > 0) {
    if (j2k_cp->ppm_previous == 0) {
      N_ppm = cio_read(4);	/* N_ppm */
      len -= 4;
    } else {
      N_ppm = j2k_cp->ppm_previous;
    }

    j = j2k_cp->ppm_store;
    if (Z_ppm == 0) {		/* First PPM marker */
      j2k_cp->ppm_data =
	(unsigned char *) calloc(N_ppm, sizeof(unsigned char));

      j2k_cp->ppm_len = N_ppm;	      //Add antonin : ppmbug1

    } else {			/* NON-first PPM marker */
      j2k_cp->ppm_data =
	(unsigned char *) realloc(j2k_cp->ppm_data,
				  (N_ppm +
				   j2k_cp->ppm_store) *
				  sizeof(unsigned char));

      j2k_cp->ppm_len = N_ppm + j2k_cp->ppm_store; //Add antonin : ppmbug1

    }

    for (i = N_ppm; i > 0; i--) {	/* Read packet header */
      j2k_cp->ppm_data[j] = cio_read(1);
      j++;
      len--;
      if (len == 0)
	break;			/* Case of non-finished packet header in present marker but finished in next one */
    }

    j2k_cp->ppm_previous = i - 1;
    j2k_cp->ppm_store = j;
  }
}

void j2k_read_ppt()
{
  int len, Z_ppt, i, j = 0;
  j2k_tcp_t *tcp;

  len = cio_read(2);
  Z_ppt = cio_read(1);
  tcp = &j2k_cp->tcps[j2k_curtileno];
  tcp->ppt = 1;
  if (Z_ppt == 0) {		/* First PPT marker */
    tcp->ppt_data =
      (unsigned char *) calloc(len - 3, sizeof(unsigned char));
    tcp->ppt_store = 0;

    tcp->ppt_len = len-3;	//Add antonin : ppmbug1
  } else {			/* NON-first PPT marker */
    tcp->ppt_data =
      (unsigned char *) realloc(tcp->ppt_data,
				(len - 3 +
				 tcp->ppt_store) * sizeof(unsigned char));

    tcp->ppt_len=len - 3 + tcp->ppt_store;    //Add antonin : ppmbug1

  }

  j = tcp->ppt_store;
  for (i = len - 3; i > 0; i--) {
    tcp->ppt_data[j] = cio_read(1);
    j++;
  }
  tcp->ppt_store = j;
}

void j2k_write_sot()
{
  int lenp, len;

  j2k_sot_start = cio_tell();
  cio_write(J2K_MS_SOT, 2);	/* SOT */
  lenp = cio_tell();
  cio_skip(2);			/* Lsot (further) */
  cio_write(j2k_curtileno, 2);	/* Isot */
  cio_skip(4);			/* Psot (further in j2k_write_sod) */
  cio_write(0, 1);		/* TPsot */
  cio_write(1, 1);		/* TNsot */
  len = cio_tell() - lenp;
  cio_seek(lenp);
  cio_write(len, 2);		/* Lsot */
  cio_seek(lenp + len);
}

void j2k_read_sot()
{
  int len, tileno, totlen, partno, numparts, i;
  j2k_tcp_t *tcp;
  j2k_tccp_t *tmp;
  char status = 0;

  len = cio_read(2);
  tileno = cio_read(2);

  if (j2k_cp->tileno_size == 0) {
    j2k_cp->tileno[j2k_cp->tileno_size] = tileno;
    j2k_cp->tileno_size++;
  } else {
    i = 0;
    while (i < j2k_cp->tileno_size && status == 0) {
      status = j2k_cp->tileno[i] == tileno ? 1 : 0;
      i++;
    }
    if (status == 0) {
      j2k_cp->tileno[j2k_cp->tileno_size] = tileno;
      j2k_cp->tileno_size++;
    }
  }

  totlen = cio_read(4);
  if (!totlen)
    totlen = cio_numbytesleft() + 8;

  partno = cio_read(1);
  numparts = cio_read(1);

  j2k_curtileno = tileno;
  j2k_eot = cio_getbp() - 12 + totlen;
  j2k_state = J2K_STATE_TPH;
  tcp = &j2k_cp->tcps[j2k_curtileno];

  if (tcp->first == 1) {
    tmp = tcp->tccps;
    *tcp = j2k_default_tcp;

    /* Initialization PPT */
    tcp->ppt = 0;
    tcp->ppt_data = NULL;

    tcp->tccps = tmp;
    for (i = 0; i < j2k_img->numcomps; i++) {
      tcp->tccps[i] = j2k_default_tcp.tccps[i];
    }
    j2k_cp->tcps[j2k_curtileno].first = 0;
  }
}

void j2k_write_sod()
{
  int l, layno;
  int totlen;
  j2k_tcp_t *tcp;
  static int j2k_sod_start;

  cio_write(J2K_MS_SOD, 2);
  if (j2k_curtileno == 0) {
    j2k_sod_start = cio_tell() + pos_correction;
  }

  /* INDEX >> */
  if (info_IM.index_on) {
    info_IM.tile[j2k_curtileno].end_header =
      cio_tell() + pos_correction - 1;
    info_IM.tile[j2k_curtileno].packet =
      (info_packet *) calloc(info_IM.Comp * info_IM.Layer *
			     (info_IM.Decomposition + 1) * 100,
			     sizeof(info_packet));
  }
  /* << INDEX */

  tcp = &j2k_cp->tcps[j2k_curtileno];
  for (layno = 0; layno < tcp->numlayers; layno++) {
    tcp->rates[layno] -= (j2k_sod_start / (j2k_cp->th * j2k_cp->tw));
  }

  info_IM.num = 0;
  if (j2k_cp->image_type)
    l = tcd_encode_tile_pxm(j2k_curtileno, cio_getbp(),
			    cio_numbytesleft() - 2, &info_IM);
  else
    l = tcd_encode_tile_pgx(j2k_curtileno, cio_getbp(),
			    cio_numbytesleft() - 2, &info_IM);

  /* Writing Psot in SOT marker */
  totlen = cio_tell() + l - j2k_sot_start;
  cio_seek(j2k_sot_start + 6);
  cio_write(totlen, 4);
  cio_seek(j2k_sot_start + totlen);
}

void j2k_read_sod()
{
  int len, truncate = 0, i;
  unsigned char *data;

  len = int_min(j2k_eot - cio_getbp(), cio_numbytesleft() + 1);
  if (len == cio_numbytesleft() + 1)
    truncate = 1;		/* Case of a truncate codestream */

  data =
    (unsigned char *) malloc((j2k_tile_len[j2k_curtileno] + len) *
			     sizeof(unsigned char));
  for (i = 0; i < j2k_tile_len[j2k_curtileno]; i++)
    data[i] = j2k_tile_data[j2k_curtileno][i];
  for (i = 0; i < len; i++)
    data[i + j2k_tile_len[j2k_curtileno]] = cio_read(1);

  j2k_tile_len[j2k_curtileno] += len;
  free(j2k_tile_data[j2k_curtileno]);
  j2k_tile_data[j2k_curtileno] = data;
  data = NULL;

  if (!truncate)
    j2k_state = J2K_STATE_TPHSOT;
  else
    j2k_state = J2K_STATE_NEOC;	/* RAJOUTE !! */
}

void j2k_write_rgn(int compno, int tileno)
{
  j2k_tcp_t *tcp = &j2k_cp->tcps[tileno];

  cio_write(J2K_MS_RGN, 2);	/* RGN  */
  cio_write(j2k_img->numcomps <= 256 ? 5 : 6, 2);	/* Lrgn */
  cio_write(compno, j2k_img->numcomps <= 256 ? 1 : 2);	/* Crgn */
  cio_write(0, 1);		/* Srgn */
  cio_write(tcp->tccps[compno].roishift, 1);	/* SPrgn */
}

void j2k_read_rgn()
{
  int len, compno, roisty;
  j2k_tcp_t *tcp;

  tcp =
    j2k_state ==
    J2K_STATE_TPH ? &j2k_cp->tcps[j2k_curtileno] : &j2k_default_tcp;
  len = cio_read(2);		/* Lrgn */
  compno = cio_read(j2k_img->numcomps <= 256 ? 1 : 2);	/* Crgn */
  roisty = cio_read(1);		/* Srgn */
  tcp->tccps[compno].roishift = cio_read(1);	/* SPrgn */
}

void j2k_write_eoc()
{
  /* fprintf(stderr, "%.8x: EOC\n", cio_tell() + pos_correction); */
  cio_write(J2K_MS_EOC, 2);
}

void j2k_read_eoc()
{
  int i, tileno;

  tcd_init(j2k_img, j2k_cp);

  for (i = 0; i < j2k_cp->tileno_size; i++) {
    tileno = j2k_cp->tileno[i];
    tcd_decode_tile(j2k_tile_data[tileno], j2k_tile_len[tileno], tileno);
    free(j2k_tile_data[tileno]);
  }

  j2k_state = J2K_STATE_MT;
  longjmp(j2k_error, 1);
}

void j2k_read_unk()
{
  fprintf(stderr, "warning: unknown marker\n");
}

LIBJ2K_API int j2k_encode(j2k_image_t * img, j2k_cp_t * cp, char *output,
			  int len, char *index)
{
  int tileno, compno, layno, resno, precno, pack_nb;
  char *dest = NULL;
  FILE *INDEX = NULL;
  FILE *f = NULL;

  if (setjmp(j2k_error)) {
    return 0;
  }

  if (cp->intermed_file==1) {
    f = fopen(output, "wb");
    if (!f) {
      fprintf(stderr, "failed to open %s for writing\n", output);
      return 1;
    }
    dest = (char *) malloc(len);
    cio_init(dest, len);
  }

  j2k_img = img;
  j2k_cp = cp;
  /* j2k_dump_cp(j2k_img, j2k_cp); */

  /* INDEX >> */
  info_IM.index_on = j2k_cp->index_on;
  if (info_IM.index_on) {
    info_IM.tile =
      (info_tile *) malloc(j2k_cp->tw * j2k_cp->th * sizeof(info_tile));
    info_IM.Im_w = j2k_img->x1 - j2k_img->x0;
    info_IM.Im_h = j2k_img->y1 - j2k_img->y0;
    info_IM.Prog = (&j2k_cp->tcps[0])->prg;
    info_IM.tw=j2k_cp->tw; 
    info_IM.th=j2k_cp->th; 
    info_IM.Tile_x = j2k_cp->tdx;	/* new version parser */
    info_IM.Tile_y = j2k_cp->tdy;	/* new version parser */
    info_IM.Comp = j2k_img->numcomps;
    info_IM.Layer = (&j2k_cp->tcps[0])->numlayers;
    info_IM.Decomposition = (&j2k_cp->tcps[0])->tccps->numresolutions - 1;
    info_IM.D_max = 0;		/* ADD Marcela */
  }
  /* << INDEX */

  j2k_write_soc();
  j2k_write_siz();
  j2k_write_cod();
  j2k_write_qcd();
  for (compno = 0; compno < j2k_img->numcomps; compno++) {
    j2k_tcp_t *tcp = &j2k_cp->tcps[0];
    if (tcp->tccps[compno].roishift)
      j2k_write_rgn(compno, 0);
  }
  if (j2k_cp->comment != NULL)
    j2k_write_com();

  if (cp->intermed_file==1) {
    /* Writing the main header */
    pos_correction = cio_tell();
    fwrite(dest, 1, cio_tell(), f);
  }

  /* INDEX >> */
  if (info_IM.index_on) {
    info_IM.Main_head_end = cio_tell() - 1;
  }
  /* << INDEX */


  for (tileno = 0; tileno < cp->tw * cp->th; tileno++) {
    fprintf(stderr, "Tile number %d / %d ", tileno + 1,
      cp->tw * cp->th);
    
    if (cp->intermed_file==1) {
      /* new dest for each tile  */
      free(dest);
      dest = (char *) malloc(len);
      cio_init(dest, len);
    }
    j2k_curtileno = tileno;
    /* initialisation before tile encoding  */

    if (tileno == 0) {
      tcd_malloc_encode(j2k_img, j2k_cp, j2k_curtileno);
    } else {
      tcd_init_encode(j2k_img, j2k_cp, j2k_curtileno);
    }

    /* INDEX >> */
    if (info_IM.index_on) {
      info_IM.tile[j2k_curtileno].num_tile = j2k_curtileno;
      info_IM.tile[j2k_curtileno].start_pos = cio_tell() + pos_correction;
    }
    /* << INDEX */
    j2k_write_sot();

    for (compno = 1; compno < img->numcomps; compno++) {
      j2k_write_coc(compno);
      j2k_write_qcc(compno);
    }

    if (cp->tcps[tileno].numpocs)
      j2k_write_poc();
    j2k_write_sod();

    /* INDEX >> */
    if (info_IM.index_on) {
      info_IM.tile[j2k_curtileno].end_pos =
	cio_tell() + pos_correction - 1;
    }
    /* << INDEX */

    /*
       if (tile->PPT)  BAD PPT !!!
       {
       FILE *PPT_file;

       int i;
       PPT_file=fopen("PPT","rb");
       fprintf(stderr,"%c%c%c%c",255,97,tile->len_ppt/256,tile->len_ppt%256);
       for (i=0;i<tile->len_ppt;i++)
       {
       unsigned char elmt;
       fread(&elmt, 1, 1, PPT_file);
       fwrite(&elmt,1,1,f);
       }
       fclose(PPT_file);
       unlink("PPT");
       }
     */
    if (cp->intermed_file==1) {
      fwrite(dest, 1, cio_tell(), f);
      pos_correction = cio_tell() + pos_correction;
    }
  }

  if (cp->intermed_file==1) {
    free(dest);
    dest = (char *) malloc(len);
    cio_init(dest, len);
  }

  j2k_write_eoc();

  if (cp->intermed_file==1) {
    fwrite(dest, 1, 2, f);
    free(dest);
    /* closing file *.j2k */
    fclose(f);
  }

  /* Creation of the index file     */

  if (info_IM.index_on) {

    double DistoTotal = 0;

    info_IM.codestream_size = cio_tell() + pos_correction;	/* Correction 14/4/03 suite rmq de Patrick */

    INDEX = fopen(index, "w");



    if (!INDEX) {

      fprintf(stderr, "failed to open %s for writing\n", index);

      return 1;

    }



    fprintf(INDEX, "%d %d\n", info_IM.Im_w, info_IM.Im_h);

    fprintf(INDEX, "%d\n", info_IM.Prog);

    fprintf(INDEX, "%d %d\n", info_IM.Tile_x, info_IM.Tile_y);

    fprintf(INDEX, "%d %d\n", info_IM.tw, info_IM.th);

    fprintf(INDEX, "%d\n", info_IM.Comp);

    fprintf(INDEX, "%d\n", info_IM.Layer);

    fprintf(INDEX, "%d\n", info_IM.Decomposition);

    for (resno=info_IM.Decomposition;resno>=0;resno--) {

      fprintf(INDEX, "[%d,%d] ", (1<<info_IM.tile[0].pdx[resno]), (1<<info_IM.tile[0].pdx[resno])); //based on tile 0

    }

    fprintf(INDEX,"\n");

    fprintf(INDEX, "%d\n", info_IM.Main_head_end);

    fprintf(INDEX, "%d\n", info_IM.codestream_size);

    for (tileno = 0; tileno < info_IM.tw * info_IM.th; tileno++) {

      fprintf(INDEX, "%4d %9d %9d %9d %9e %9d %9e\n",

	      info_IM.tile[tileno].num_tile,

	      info_IM.tile[tileno].start_pos,

	      info_IM.tile[tileno].end_header,

	      info_IM.tile[tileno].end_pos, info_IM.tile[tileno].distotile, info_IM.tile[tileno].nbpix,

	      info_IM.tile[tileno].distotile / info_IM.tile[tileno].nbpix);

    }

    for (tileno = 0; tileno < info_IM.tw * info_IM.th; tileno++) {

      int start_pos, end_pos;

      double disto = 0;

      pack_nb = 0;

      /* fprintf(INDEX,

	      "pkno tileno layerno resno compno precno start_pos   end_pos       deltaSE        \n");*/

      if (info_IM.Prog == 0) {	/* LRCP */

	for (layno = 0; layno < info_IM.Layer; layno++) {

	  for (resno = 0; resno < info_IM.Decomposition + 1; resno++) {

	    for (compno = 0; compno < info_IM.Comp; compno++) {

	      for (precno = 0;

		   precno <

		   info_IM.tile[tileno].pw[resno] * info_IM.tile[tileno].ph[resno];

		   precno++) {

		start_pos = info_IM.tile[tileno].packet[pack_nb].start_pos;

		end_pos = info_IM.tile[tileno].packet[pack_nb].end_pos;

		disto = info_IM.tile[tileno].packet[pack_nb].disto;

		fprintf(INDEX, "%4d %6d %7d %5d %6d %6d %9d %9d %8e\n",

			pack_nb, tileno, layno, resno, compno, precno,

			start_pos, end_pos, disto);

		DistoTotal += disto;

		pack_nb++;

	      }

	    }

	  }

	}

      } else if (info_IM.Prog == 1) {	/* RLCP */

	for (resno = 0; resno < info_IM.Decomposition + 1; resno++) {

	  for (layno = 0; layno < info_IM.Layer; layno++) {

	    for (compno = 0; compno < info_IM.Comp; compno++) {

	      for (precno = 0; precno < info_IM.tile[tileno].pw[resno] * info_IM.tile[tileno].ph[resno]; precno++) {

		start_pos = info_IM.tile[tileno].packet[pack_nb].start_pos;

		end_pos = info_IM.tile[tileno].packet[pack_nb].end_pos;

		disto = info_IM.tile[tileno].packet[pack_nb].disto;

		fprintf(INDEX, "%4d %6d %7d %5d %6d %6d %9d %9d %8e\n",

			pack_nb, tileno, layno, resno, compno, precno,

			start_pos, end_pos, disto);

		DistoTotal += disto;

		pack_nb++;

	      }

	    }

	  }

	}

      } else if (info_IM.Prog == 2) {	/* RPCL */

	for (resno = 0; resno < info_IM.Decomposition + 1; resno++) {

	  for (precno = 0; precno < info_IM.tile[tileno].pw[resno] * info_IM.tile[tileno].ph[resno]; precno++) {

	    for (compno = 0; compno < info_IM.Comp; compno++) {

	      for (layno = 0; layno < info_IM.Layer; layno++) {

		start_pos = info_IM.tile[tileno].packet[pack_nb].start_pos;

		end_pos = info_IM.tile[tileno].packet[pack_nb].end_pos;

		disto = info_IM.tile[tileno].packet[pack_nb].disto;

		fprintf(INDEX, "%4d %6d %7d %5d %6d %6d %9d %9d %8e\n",

			pack_nb, tileno, layno, resno, compno, precno,

			start_pos, end_pos, disto);

		DistoTotal += disto;

		pack_nb++;

	      }

	    }

	  }

	}

      } else if (info_IM.Prog == 3) {	/* PCRL */

	for (precno = 0; precno < info_IM.tile[tileno].pw[resno] * info_IM.tile[tileno].ph[resno]; precno++) {

	  for (compno = 0; compno < info_IM.Comp; compno++) {

	    for (resno = 0; resno < info_IM.Decomposition + 1; resno++) {

	      for (layno = 0; layno < info_IM.Layer; layno++) {

		start_pos = info_IM.tile[tileno].packet[pack_nb].start_pos;

		end_pos = info_IM.tile[tileno].packet[pack_nb].end_pos;

		disto = info_IM.tile[tileno].packet[pack_nb].disto;

		fprintf(INDEX, "%4d %6d %7d %5d %6d %6d %9d %9d %8e\n",

			pack_nb, tileno, layno, resno, compno, precno,

			start_pos, end_pos, disto);

		DistoTotal += disto;

		pack_nb++;

	      }

	    }

	  }

	}

      } else {			/* CPRL */



	for (compno = 0; compno < info_IM.Comp; compno++) {

	  for (precno = 0; precno < info_IM.tile[tileno].pw[resno] * info_IM.tile[tileno].ph[resno]; precno++) {

	    for (resno = 0; resno < info_IM.Decomposition + 1; resno++) {

	      for (layno = 0; layno < info_IM.Layer; layno++) {

		start_pos = info_IM.tile[tileno].packet[pack_nb].start_pos;

		end_pos = info_IM.tile[tileno].packet[pack_nb].end_pos;

		disto = info_IM.tile[tileno].packet[pack_nb].disto;

		fprintf(INDEX, "%4d %6d %7d %5d %6d %6d %9d %9d %8e\n",

			pack_nb, tileno, layno, resno, compno, precno,

			start_pos, end_pos, disto);

		DistoTotal += disto;

		pack_nb++;

	      }

	    }

	  }

	}

      }

    }

    fprintf(INDEX, "SE max : %8e\n", info_IM.D_max);

    fprintf(INDEX, "SE total : %.8e\n", DistoTotal);

    fclose(INDEX);

  }

  j2k_clean();

  return cio_tell();
}

typedef struct {
  int id;
  int states;
  void (*handler) ();
} j2k_dec_mstabent_t;

j2k_dec_mstabent_t j2k_dec_mstab[] = {
  {J2K_MS_SOC, J2K_STATE_MHSOC, j2k_read_soc},
  {J2K_MS_SOT, J2K_STATE_MH | J2K_STATE_TPHSOT, j2k_read_sot},
  {J2K_MS_SOD, J2K_STATE_TPH, j2k_read_sod},
  {J2K_MS_EOC, J2K_STATE_TPHSOT, j2k_read_eoc},
  {J2K_MS_SIZ, J2K_STATE_MHSIZ, j2k_read_siz},
  {J2K_MS_COD, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_cod},
  {J2K_MS_COC, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_coc},
  {J2K_MS_RGN, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_rgn},
  {J2K_MS_QCD, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_qcd},
  {J2K_MS_QCC, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_qcc},
  {J2K_MS_POC, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_poc},
  {J2K_MS_TLM, J2K_STATE_MH, j2k_read_tlm},
  {J2K_MS_PLM, J2K_STATE_MH, j2k_read_plm},
  {J2K_MS_PLT, J2K_STATE_TPH, j2k_read_plt},
  {J2K_MS_PPM, J2K_STATE_MH, j2k_read_ppm},
  {J2K_MS_PPT, J2K_STATE_TPH, j2k_read_ppt},
  {J2K_MS_SOP, 0, 0},
  {J2K_MS_CRG, J2K_STATE_MH, j2k_read_crg},
  {J2K_MS_COM, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_com},
  {0, J2K_STATE_MH | J2K_STATE_TPH, j2k_read_unk}
};

j2k_dec_mstabent_t *j2k_dec_mstab_lookup(int id)
{
  j2k_dec_mstabent_t *e;
  for (e = j2k_dec_mstab; e->id != 0; e++) {
    if (e->id == id) {
      break;
    }
  }
  return e;
}



LIBJ2K_API int j2k_decode(unsigned char *src, int len, j2k_image_t * img,

			  j2k_cp_t * cp)
{

  if (setjmp(j2k_error)) {
    if (j2k_state != J2K_STATE_MT) {
      fprintf(stderr, "WARNING: incomplete bitstream\n");
      return 0;
    }
    j2k_clean();
    return cio_numbytes();    /* Correct way of ending j2k_decode */
  }

  j2k_img = img;

  j2k_cp = cp;

  j2k_state = J2K_STATE_MHSOC;
  cio_init(src, len);

  for (;;) {
    j2k_dec_mstabent_t *e;
    int id = cio_read(2);
    if (id >> 8 != 0xff) {
      fprintf(stderr, "%.8x: expected a marker instead of %x\n",
	      cio_tell() - 2, id);
      return 0;
    }
    e = j2k_dec_mstab_lookup(id);
    if (!(j2k_state & e->states)) {
      fprintf(stderr, "%.8x: unexpected marker %x\n", cio_tell() - 2, id);
      return 0;
    }
    if (e->handler) {
      (*e->handler) ();
    }
    if (j2k_state == J2K_STATE_NEOC)
      break;			/* RAJOUTE */
  }
  if (j2k_state == J2K_STATE_NEOC)
    j2k_read_eoc();		/* RAJOUTE */

  return 0;
}

/*
 * Read a JPT-stream and decode file
 *
 */
int j2k_decode_jpt_stream(unsigned char *src, int len, j2k_image_t * img,
			  j2k_cp_t * cp)
{
  jpt_msg_header_struct_t header;
  int position;

  if (setjmp(j2k_error)) {
    if (j2k_state != J2K_STATE_MT) {
      fprintf(stderr, "WARNING: incomplete bitstream\n");
      return 0;
    }
    return cio_numbytes();
  }

  j2k_img = img;

  j2k_cp = cp;

  j2k_state = J2K_STATE_MHSOC;
  cio_init(src, len);

  /* Initialize the header */
  jpt_init_Msg_Header(&header);
  /* Read the first header of the message */
  jpt_read_Msg_Header(&header);

  position = cio_tell();
  if (header.Class_Id != 6) {	/* 6 : Main header data-bin message */
    fprintf(stderr,
	    "[JPT-stream] : Expecting Main header first [class_Id %d] !\n",
	    header.Class_Id);
    return 0;
  }

  for (;;) {
    j2k_dec_mstabent_t *e;
    int id;

    if (!cio_numbytesleft()) {
      j2k_read_eoc();
      return 0;
    }
    /* data-bin read -> need to read a new header */
    if ((unsigned int) (cio_tell() - position) == header.Msg_length) {
      jpt_read_Msg_Header(&header);
      position = cio_tell();
      if (header.Class_Id != 4) {	/* 4 : Tile data-bin message */
	fprintf(stderr, "[JPT-stream] : Expecting Tile info !\n");
	return 0;
      }
    }

    id = cio_read(2);
    if (id >> 8 != 0xff) {
      fprintf(stderr, "%.8x: expected a marker instead of %x\n",
	      cio_tell() - 2, id);
      return 0;
    }
    e = j2k_dec_mstab_lookup(id);
    if (!(j2k_state & e->states)) {
      fprintf(stderr, "%.8x: unexpected marker %x\n", cio_tell() - 2, id);
      return 0;
    }
    if (e->handler) {
      (*e->handler) ();
    }
    if (j2k_state == J2K_STATE_NEOC)
      break;			/* RAJOUTE */
  }
  if (j2k_state == J2K_STATE_NEOC)
    j2k_read_eoc();		/* RAJOUTE */

  return 0;
}

#ifdef WIN32
#include <windows.h>

BOOL APIENTRY DllMain(HANDLE hModule, DWORD ul_reason_for_call,
		      LPVOID lpReserved)
{
  switch (ul_reason_for_call) {
  case DLL_PROCESS_ATTACH:
  case DLL_THREAD_ATTACH:
  case DLL_THREAD_DETACH:
  case DLL_PROCESS_DETACH:
    break;
  }
  return TRUE;
}
#endif