openjpeg/libopenjpeg/t1.c

/*
 * Copyright (c) 2001-2002, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2002-2003,  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 "t1.h"
#include "j2k.h"
#include "mqc.h"
#include "raw.h"		/* Antonin */
#include "int.h"
#include "mct.h"
#include "dwt.h"
#include "fix.h"
#include <stdio.h>
#include <math.h>
#include <stdlib.h>

#define T1_MAXCBLKW 1024
#define T1_MAXCBLKH 1024

#define T1_SIG_NE 0x0001
#define T1_SIG_SE 0x0002
#define T1_SIG_SW 0x0004
#define T1_SIG_NW 0x0008
#define T1_SIG_N 0x0010
#define T1_SIG_E 0x0020
#define T1_SIG_S 0x0040
#define T1_SIG_W 0x0080
#define T1_SIG_OTH (T1_SIG_N|T1_SIG_NE|T1_SIG_E|T1_SIG_SE|T1_SIG_S|T1_SIG_SW|T1_SIG_W|T1_SIG_NW)
#define T1_SIG_PRIM (T1_SIG_N|T1_SIG_E|T1_SIG_S|T1_SIG_W)

#define T1_SGN_N 0x0100
#define T1_SGN_E 0x0200
#define T1_SGN_S 0x0400
#define T1_SGN_W 0x0800
#define T1_SGN (T1_SGN_N|T1_SGN_E|T1_SGN_S|T1_SGN_W)

#define T1_SIG 0x1000
#define T1_REFINE 0x2000
#define T1_VISIT 0x4000

#define T1_NUMCTXS_AGG 1
#define T1_NUMCTXS_ZC 9
#define T1_NUMCTXS_MAG 3
#define T1_NUMCTXS_SC 5
#define T1_NUMCTXS_UNI 1

#define T1_CTXNO_AGG 0
#define T1_CTXNO_ZC (T1_CTXNO_AGG+T1_NUMCTXS_AGG)
#define T1_CTXNO_MAG (T1_CTXNO_ZC+T1_NUMCTXS_ZC)
#define T1_CTXNO_SC (T1_CTXNO_MAG+T1_NUMCTXS_MAG)
#define T1_CTXNO_UNI (T1_CTXNO_SC+T1_NUMCTXS_SC)
#define T1_NUMCTXS (T1_CTXNO_UNI+T1_NUMCTXS_UNI)

#define T1_NMSEDEC_BITS 7
#define T1_NMSEDEC_FRACBITS (T1_NMSEDEC_BITS-1)

/* add TONY */
#define T1_TYPE_MQ 0
#define T1_TYPE_RAW 1
/* dda */

static int t1_lut_ctxno_zc[1024];
static int t1_lut_ctxno_sc[256];
static int t1_lut_ctxno_mag[4096];
static int t1_lut_spb[256];
static int t1_lut_nmsedec_sig[1 << T1_NMSEDEC_BITS];
static int t1_lut_nmsedec_sig0[1 << T1_NMSEDEC_BITS];
static int t1_lut_nmsedec_ref[1 << T1_NMSEDEC_BITS];
static int t1_lut_nmsedec_ref0[1 << T1_NMSEDEC_BITS];

static int t1_data[T1_MAXCBLKH][T1_MAXCBLKW];
static int t1_flags[T1_MAXCBLKH + 2][T1_MAXCBLKH + 2];

int t1_getctxno_zc(int f, int orient)
{
  return t1_lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
}

int t1_getctxno_sc(int f)
{
  return t1_lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}

int t1_getctxno_mag(int f)
{
  return t1_lut_ctxno_mag[(f & T1_SIG_OTH) |
			  (((f & T1_REFINE) != 0) << 11)];
}

int t1_getspb(int f)
{
  return t1_lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}

int t1_getnmsedec_sig(int x, int bitpos)
{
  if (bitpos > T1_NMSEDEC_FRACBITS)
    return t1_lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) &
			      ((1 << T1_NMSEDEC_BITS) - 1)];
  else
    return t1_lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}

int t1_getnmsedec_ref(int x, int bitpos)
{
  if (bitpos > T1_NMSEDEC_FRACBITS)
    return t1_lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) &
			      ((1 << T1_NMSEDEC_BITS) - 1)];
  else
    return t1_lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}

void t1_updateflags(int *fp, int s)
{
  int *np = fp - (T1_MAXCBLKW + 2);
  int *sp = fp + (T1_MAXCBLKW + 2);
  np[-1] |= T1_SIG_SE;
  np[1] |= T1_SIG_SW;
  sp[-1] |= T1_SIG_NE;
  sp[1] |= T1_SIG_NW;
  *np |= T1_SIG_S;
  *sp |= T1_SIG_N;
  fp[-1] |= T1_SIG_E;
  fp[1] |= T1_SIG_W;
  if (s) {
    *np |= T1_SGN_S;
    *sp |= T1_SGN_N;
    fp[-1] |= T1_SGN_E;
    fp[1] |= T1_SGN_W;
  }
}

void t1_enc_sigpass_step(int *fp, int *dp, int orient, int bpno, int one,
			 int *nmsedec, char type, int vsc)
{
  int v, flag;
  flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S)))
    : (*fp);
  if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
    v = int_abs(*dp) & one ? 1 : 0;
    if (type == T1_TYPE_RAW) {	/* BYPASS/LAZY MODE */
      mqc_setcurctx(t1_getctxno_zc(flag, orient));	/* ESSAI */
      mqc_bypass_enc(v);
    } else {
      mqc_setcurctx(t1_getctxno_zc(flag, orient));
      mqc_encode(v);
    }
    if (v) {
      v = *dp < 0 ? 1 : 0;
      *nmsedec +=
	t1_getnmsedec_sig(int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
      if (type == T1_TYPE_RAW) {	/* BYPASS/LAZY MODE */
	mqc_setcurctx(t1_getctxno_sc(flag));	/* ESSAI */
	mqc_bypass_enc(v);
      } else {
	mqc_setcurctx(t1_getctxno_sc(flag));
	mqc_encode(v ^ t1_getspb(flag));
      }
      t1_updateflags(fp, v);
      *fp |= T1_SIG;
    }
    *fp |= T1_VISIT;
  }
}


void t1_dec_sigpass_step(int *fp, int *dp, int orient, int oneplushalf,
			 char type, int vsc)
{
  int v, flag;
  flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S)))
    : (*fp);
  if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
    if (type == T1_TYPE_RAW) {
      if (raw_decode()) {
	v = raw_decode();	/* ESSAI */
	*dp = v ? -oneplushalf : oneplushalf;
	t1_updateflags(fp, v);
	*fp |= T1_SIG;
      }
    } else {
      mqc_setcurctx(t1_getctxno_zc(flag, orient));
      if (mqc_decode()) {
	mqc_setcurctx(t1_getctxno_sc(flag));
	v = mqc_decode() ^ t1_getspb(flag);
	*dp = v ? -oneplushalf : oneplushalf;
	t1_updateflags(fp, v);
	*fp |= T1_SIG;
      }
    }
    *fp |= T1_VISIT;
  }
}				/* VSC and  BYPASS by Antonin */

void t1_enc_sigpass(int w, int h, int bpno, int orient, int *nmsedec,
		    char type, int cblksty)
{
  int i, j, k, one, vsc;
  *nmsedec = 0;
  one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
  for (k = 0; k < h; k += 4) {
    for (i = 0; i < w; i++) {
      for (j = k; j < k + 4 && j < h; j++) {
	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
	t1_enc_sigpass_step(&t1_flags[1 + j][1 + i],
			    &t1_data[j][i], orient, bpno, one,
			    nmsedec, type, vsc);
      }
    }
  }
}

void t1_dec_sigpass(int w, int h, int bpno, int orient, char type,
		    int cblksty)
{
  int i, j, k, one, half, oneplushalf, vsc;
  one = 1 << bpno;
  half = one >> 1;
  oneplushalf = one | half;
  for (k = 0; k < h; k += 4) {
    for (i = 0; i < w; i++) {
      for (j = k; j < k + 4 && j < h; j++) {
	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
	t1_dec_sigpass_step(&t1_flags[1 + j][1 + i],
			    &t1_data[j][i], 
			    orient, 
			    oneplushalf,
			    type, vsc);
      }
    }
  }
}				/* VSC and  BYPASS by Antonin */

void t1_enc_refpass_step(int *fp, int *dp, int bpno, int one, int *nmsedec,
			 char type, int vsc)
{
  int v, flag;
  flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S)))
    : (*fp);
  if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
    *nmsedec +=
      t1_getnmsedec_ref(int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
    v = int_abs(*dp) & one ? 1 : 0;
    if (type == T1_TYPE_RAW) {	/* BYPASS/LAZY MODE */
      mqc_setcurctx(t1_getctxno_mag(flag));	/* ESSAI */
      mqc_bypass_enc(v);
    } else {
      mqc_setcurctx(t1_getctxno_mag(flag));
      mqc_encode(v);
    }
    *fp |= T1_REFINE;
  }
}


void t1_dec_refpass_step(int *fp, int *dp, int poshalf, int neghalf,
			 char type, int vsc)
{
  int v, t, flag;
  flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S)))
    : (*fp);
  if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
    if (type == T1_TYPE_RAW) {
      mqc_setcurctx(t1_getctxno_mag(flag));	/* ESSAI */
      v = raw_decode();
    } else {
      mqc_setcurctx(t1_getctxno_mag(flag));
      v = mqc_decode();
    }
    t = v ? poshalf : neghalf;
    *dp += *dp < 0 ? -t : t;
    *fp |= T1_REFINE;
  }
}				/* VSC and  BYPASS by Antonin  */

void t1_enc_refpass(int w, int h, int bpno, int *nmsedec, char type,
		    int cblksty)
{
  int i, j, k, one, vsc;
  *nmsedec = 0;
  one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
  for (k = 0; k < h; k += 4) {
    for (i = 0; i < w; i++) {
      for (j = k; j < k + 4 && j < h; j++) {
	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
	t1_enc_refpass_step(&t1_flags[1 + j][1 + i],
			    &t1_data[j][i], bpno, one, nmsedec, type, vsc);
      }
    }
  }
}

void t1_dec_refpass(int w, int h, int bpno, char type, int cblksty)
{
  int i, j, k, one, poshalf, neghalf;
  int vsc;
  one = 1 << bpno;
  poshalf = one >> 1;
  neghalf = bpno > 0 ? -poshalf : -1;
  for (k = 0; k < h; k += 4) {
    for (i = 0; i < w; i++) {
      for (j = k; j < k + 4 && j < h; j++) {
	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
	t1_dec_refpass_step(&t1_flags[1 + j][1 + i],
			    &t1_data[j][i], 
			    poshalf, 
			    neghalf, 
			    type, vsc);
      }
    }
  }
}				/* VSC and  BYPASS by Antonin */

void t1_enc_clnpass_step(int *fp, int *dp, int orient, int bpno, int one,
			 int *nmsedec, int partial, int vsc)
{
  int v, flag;
  flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S)))
    : (*fp);
  if (partial)
    goto label_partial;
  if (!(*fp & (T1_SIG | T1_VISIT))) {
    mqc_setcurctx(t1_getctxno_zc(flag, orient));
    v = int_abs(*dp) & one ? 1 : 0;
    mqc_encode(v);
    if (v) {
    label_partial:
      *nmsedec +=
	t1_getnmsedec_sig(int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
      mqc_setcurctx(t1_getctxno_sc(flag));
      v = *dp < 0 ? 1 : 0;
      mqc_encode(v ^ t1_getspb(flag));
      t1_updateflags(fp, v);
      *fp |= T1_SIG;
    }
  }
  *fp &= ~T1_VISIT;
}


void t1_dec_clnpass_step(int *fp, int *dp, int orient, int oneplushalf,
			 int partial, int vsc)
{
  int v, flag;
  flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S)))
    : (*fp);
  if (partial)
    goto label_partial;
  if (!(flag & (T1_SIG | T1_VISIT))) {
    mqc_setcurctx(t1_getctxno_zc(flag, orient));
    if (mqc_decode()) {
    label_partial:
      mqc_setcurctx(t1_getctxno_sc(flag));
      v = mqc_decode() ^ t1_getspb(flag);
      *dp = v ? -oneplushalf : oneplushalf;
      t1_updateflags(fp, v);
      *fp |= T1_SIG;
    }
  }
  *fp &= ~T1_VISIT;
}				/* VSC and  BYPASS by Antonin */

void t1_enc_clnpass(int w, int h, int bpno, int orient, int *nmsedec,
		    int cblksty)
{
  int i, j, k, one, agg, runlen, vsc;
  *nmsedec = 0;
  one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
  for (k = 0; k < h; k += 4) {
    for (i = 0; i < w; i++) {
      if (k + 3 < h) {
	if (cblksty & J2K_CCP_CBLKSTY_VSC) {
	  agg = !(t1_flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
		  || t1_flags[1 + k + 1][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || t1_flags[1 + k + 2][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || (t1_flags[1 + k + 3][1 + i] &
		      (~
		       (T1_SIG_S | T1_SIG_SE | T1_SIG_SW |
			T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
	} else {
	  agg = !(t1_flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
		  || t1_flags[1 + k + 1][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || t1_flags[1 + k + 2][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || t1_flags[1 + k + 3][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH));
	}
      } else {
	agg = 0;
      }
      if (agg) {
	for (runlen = 0; runlen < 4; runlen++) {
	  if (int_abs(t1_data[k + runlen][i]) & one)
	    break;
	}
	mqc_setcurctx(T1_CTXNO_AGG);
	mqc_encode(runlen != 4);
	if (runlen == 4) {
	  continue;
	}
	mqc_setcurctx(T1_CTXNO_UNI);
	mqc_encode(runlen >> 1);
	mqc_encode(runlen & 1);
      } else {
	runlen = 0;
      }
      for (j = k + runlen; j < k + 4 && j < h; j++) {
	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
	t1_enc_clnpass_step(&t1_flags[1 + j][1 + i],
			    &t1_data[j][i], orient, bpno, one,
			    nmsedec, agg && (j == k + runlen), vsc);
      }
    }
  }
}

void t1_dec_clnpass(int w, int h, int bpno, int orient, int cblksty)
{
  int i, j, k, one, half, oneplushalf, agg, runlen, vsc;
  int segsym = cblksty & J2K_CCP_CBLKSTY_SEGSYM;
  one = 1 << bpno;
  half = one >> 1;
  oneplushalf = one | half;
  for (k = 0; k < h; k += 4) {
    for (i = 0; i < w; i++) {
      if (k + 3 < h) {
	if (cblksty & J2K_CCP_CBLKSTY_VSC) {
	  agg = !(t1_flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
		  || t1_flags[1 + k + 1][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || t1_flags[1 + k + 2][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || (t1_flags[1 + k + 3][1 + i] &
		      (~
		       (T1_SIG_S | T1_SIG_SE | T1_SIG_SW |
			T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
	} else {
	  agg = !(t1_flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
		  || t1_flags[1 + k + 1][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || t1_flags[1 + k + 2][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH)
		  || t1_flags[1 + k + 3][1 +
					 i] & (T1_SIG | T1_VISIT |
					       T1_SIG_OTH));
	}
      } else {
	agg = 0;
      }
      if (agg) {
	mqc_setcurctx(T1_CTXNO_AGG);
	if (!mqc_decode()) {
	  continue;
	}
	mqc_setcurctx(T1_CTXNO_UNI);
	runlen = mqc_decode();
	runlen = (runlen << 1) | mqc_decode();
      } else {
	runlen = 0;
      }
      for (j = k + runlen; j < k + 4 && j < h; j++) {
	vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC)
	       && (j == k + 3 || j == h - 1)) ? 1 : 0;
	t1_dec_clnpass_step(&t1_flags[1 + j][1 + i],
			    &t1_data[j][i], 
			    orient, 
			    oneplushalf,
			    agg && (j == k + runlen), vsc);
      }
    }
  }
  if (segsym) {
    int v = 0;
    mqc_setcurctx(T1_CTXNO_UNI);
    v = mqc_decode();
    v = (v << 1) | mqc_decode();
    v = (v << 1) | mqc_decode();
    v = (v << 1) | mqc_decode();
    /*  if (v!=0xa) 
       {
       fprintf(stderr, "warning: bad segmentation symbol %x\n",v);
       } */
  }
}				/* VSC and  BYPASS by Antonin */

double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps)	//mod fixed_quality
{
  double w1, w2, wmsedec;
  if (qmfbid == 1) {
    w1 = (numcomps > 1) ? mct_getnorm(compno) : 1;
    w2 = dwt_getnorm(level, orient);
  } else {			/* if (qmfbid == 0) */
    w1 = (numcomps > 1) ? mct_getnorm_real(compno) : 1;
    w2 = dwt_getnorm_real(level, orient);
  }
  wmsedec = w1 * w2 * (stepsize / 8192.0) * (1 << bpno);
  wmsedec *= wmsedec * nmsedec / 8192.0;
  return wmsedec;
}

void t1_encode_cblk(tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, tcd_tile_t * tile)	//mod fixed_quality
{
  int i, j;
  int w, h;
  int passno;
  int bpno, passtype;
  int max;
  int nmsedec;
  double cumwmsedec = 0;
  char type = T1_TYPE_MQ;

  w = cblk->x1 - cblk->x0;
  h = cblk->y1 - cblk->y0;

  max = 0;
  for (j = 0; j < h; j++) {
    for (i = 0; i < w; i++) {
      max = int_max(max, int_abs(t1_data[j][i]));
    }
  }

  cblk->numbps = max ? (int_floorlog2(max) + 1) - T1_NMSEDEC_FRACBITS : 0;

  for (i = 0; i < sizeof(t1_flags) / sizeof(int); i++)
    ((int *) t1_flags)[i] = 0;
  bpno = cblk->numbps - 1;
  passtype = 2;

  mqc_resetstates();
  mqc_setstate(T1_CTXNO_UNI, 0, 46);
  mqc_setstate(T1_CTXNO_AGG, 0, 3);
  mqc_setstate(T1_CTXNO_ZC, 0, 4);
  mqc_init_enc(cblk->data);

  for (passno = 0; bpno >= 0; passno++) {
    tcd_pass_t *pass = &cblk->passes[passno];
    int correction = 3;
    type = ((bpno < (cblk->numbps - 4)) && (passtype < 2)
	    && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW :
      T1_TYPE_MQ;

    switch (passtype) {
    case 0:
      t1_enc_sigpass(w, h, bpno, orient, &nmsedec, type, cblksty);
      break;
    case 1:
      t1_enc_refpass(w, h, bpno, &nmsedec, type, cblksty);
      break;
    case 2:
      t1_enc_clnpass(w, h, bpno, orient, &nmsedec, cblksty);
      /* code switch SEGMARK (i.e. SEGSYM) */
      if (cblksty & J2K_CCP_CBLKSTY_SEGSYM)
	mqc_segmark_enc();
      break;
    }

    cumwmsedec += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);	//mod fixed_quality
    tile->distotile += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);	//add antonin quality


    /* Code switch "RESTART" (i.e. TERMALL) */
    if ((cblksty & J2K_CCP_CBLKSTY_TERMALL)
	&& !((passtype == 2) && (bpno - 1 < 0))) {
      if (type == T1_TYPE_RAW) {
	mqc_flush();
	correction = 1;
	/* correction = mqc_bypass_flush_enc(); */
      } else {			/* correction = mqc_restart_enc(); */
	mqc_flush();
	correction = 1;
      }
      pass->term = 1;
    } else {
      if (((bpno < (cblk->numbps - 4) && (passtype > 0))
	   || ((bpno == (cblk->numbps - 4)) && (passtype == 2)))
	  && (cblksty & J2K_CCP_CBLKSTY_LAZY)) {
	if (type == T1_TYPE_RAW) {
	  mqc_flush();
	  correction = 1;
	  /* correction = mqc_bypass_flush_enc(); */
	} else {		/* correction = mqc_restart_enc(); */
	  mqc_flush();
	  correction = 1;
	}
	pass->term = 1;
      } else {
	pass->term = 0;
      }
    }

    if (++passtype == 3) {
      passtype = 0;
      bpno--;
    }

    if (pass->term && bpno > 0) {
      type = ((bpno < (cblk->numbps - 4)) && (passtype < 2)
	      && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW :
	T1_TYPE_MQ;
      if (type == T1_TYPE_RAW)
	mqc_bypass_init_enc();
      else
	mqc_restart_init_enc();
    }

    pass->distortiondec = cumwmsedec;
    pass->rate = mqc_numbytes() + correction;	/* FIXME */
    pass->len =
      pass->rate - (passno == 0 ? 0 : cblk->passes[passno - 1].rate);

    /* Code-switch "RESET" */
    if (cblksty & J2K_CCP_CBLKSTY_RESET)
      mqc_reset_enc();
  }

  /* Code switch "ERTERM" (i.e. PTERM) */
  if (cblksty & J2K_CCP_CBLKSTY_PTERM)
    mqc_erterm_enc();
  else /* Default coding */ if (!(cblksty & J2K_CCP_CBLKSTY_LAZY))
    mqc_flush();

  cblk->totalpasses = passno;
}

void t1_decode_cblk(tcd_cblk_t * cblk, int orient, int roishift,
		    int cblksty)
{
  int i;
  int w, h;
  int bpno, passtype;
  int segno, passno;
  char type = T1_TYPE_MQ; //BYPASS mode

  for (i = 0; i < sizeof(t1_data) / sizeof(int); i++)
    ((int *) t1_data)[i] = 0;
  for (i = 0; i < sizeof(t1_flags) / sizeof(int); i++)
    ((int *) t1_flags)[i] = 0;

  w = cblk->x1 - cblk->x0;
  h = cblk->y1 - cblk->y0;
  bpno = roishift + cblk->numbps - 1;
  passtype = 2;

  mqc_resetstates();
  mqc_setstate(T1_CTXNO_UNI, 0, 46);
  mqc_setstate(T1_CTXNO_AGG, 0, 3);
  mqc_setstate(T1_CTXNO_ZC, 0, 4);

  for (segno = 0; segno < cblk->numsegs; segno++) {
    tcd_seg_t *seg = &cblk->segs[segno];
    
    // Add BYPASS mode 
    type = ((bpno <= (cblk->numbps - 1) - 4) && (passtype < 2)
      && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW :
    T1_TYPE_MQ;
    if (type == T1_TYPE_RAW) 
      raw_init_dec(seg->data, seg->len);
    else
      mqc_init_dec(seg->data, seg->len);
    // ddA
    
    if (bpno==0) cblk->lastbp=1;  // Add Antonin : quantizbug1
    
    for (passno = 0; passno < seg->numpasses; passno++) {
      switch (passtype) {
      case 0:
	t1_dec_sigpass(w, h, bpno, orient, type, cblksty);
	break;
      case 1:
	t1_dec_refpass(w, h, bpno, type, cblksty);
	break;
      case 2:
	t1_dec_clnpass(w, h, bpno, orient, cblksty);
	break;
      }
      
      if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) {
	mqc_resetstates();
	mqc_setstate(T1_CTXNO_UNI, 0, 46);
	mqc_setstate(T1_CTXNO_AGG, 0, 3);
	mqc_setstate(T1_CTXNO_ZC, 0, 4);
      }
      
      if (++passtype == 3) {
	passtype = 0;
	bpno--;
      }
    }
  }
}

void t1_encode_cblks(tcd_tile_t * tile, j2k_tcp_t * tcp)
{
  int compno, resno, bandno, precno, cblkno;
  int x, y, i, j, orient;
  tcd_tilecomp_t *tilec;
  tcd_resolution_t *res;
  tcd_band_t *band;
  tcd_precinct_t *prc;
  tcd_cblk_t *cblk;

  tile->distotile = 0;		//add fixed_quality

  for (compno = 0; compno < tile->numcomps; compno++) {
    tilec = &tile->comps[compno];
    for (resno = 0; resno < tilec->numresolutions; resno++) {
      res = &tilec->resolutions[resno];
      for (bandno = 0; bandno < res->numbands; bandno++) {
	band = &res->bands[bandno];
	for (precno = 0; precno < res->pw * res->ph; precno++) {
	  prc = &band->precincts[precno];
	  for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
	    cblk = &prc->cblks[cblkno];

	    if (band->bandno == 0) {
	      x = cblk->x0 - band->x0;
	      y = cblk->y0 - band->y0;
	    } else if (band->bandno == 1) {
	      tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
	      x = pres->x1 - pres->x0 + cblk->x0 - band->x0;
	      y = cblk->y0 - band->y0;
	    } else if (band->bandno == 2) {
	      tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
	      x = cblk->x0 - band->x0;
	      y = pres->y1 - pres->y0 + cblk->y0 - band->y0;
	    } else {		/* if (band->bandno == 3) */
	      tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
	      x = pres->x1 - pres->x0 + cblk->x0 - band->x0;
	      y = pres->y1 - pres->y0 + cblk->y0 - band->y0;
	    }

	    if (tcp->tccps[compno].qmfbid == 1) {

	      for (j = 0; j < cblk->y1 - cblk->y0; j++) {
		for (i = 0; i < cblk->x1 - cblk->x0; i++) {
		  t1_data[j][i] =
		    tilec->data[(x + i) +
				(y + j) * (tilec->x1 -
					   tilec->
					   x0)] << T1_NMSEDEC_FRACBITS;
		}
	      }
	    } else if (tcp->tccps[compno].qmfbid == 0) {
	      for (j = 0; j < cblk->y1 - cblk->y0; j++) {
		for (i = 0; i < cblk->x1 - cblk->x0; i++) {
		  t1_data[j][i] =
		    fix_mul(tilec->
			    data[x + i +
				 (y + j) * (tilec->x1 -
					    tilec->
					    x0)],
			    8192 * 8192 /
			    band->stepsize) >> (13 - T1_NMSEDEC_FRACBITS);
		}
	      }
	    }
	    orient = band->bandno;	/* FIXME */
	    if (orient == 2) {
	      orient = 1;
	    } else if (orient == 1) {
	      orient = 2;
	    }
	    t1_encode_cblk(cblk, orient, compno, tilec->numresolutions - 1 - resno, tcp->tccps[compno].qmfbid, band->stepsize, tcp->tccps[compno].cblksty, tile->numcomps, tile);	//mod fixed_quality
	  }			/* cblkno */
	}			/* precno */
      }				/* bandno */
    }				/* resno  */
  }				/* compo  */
}


void t1_decode_cblks(tcd_tile_t * tile, j2k_tcp_t * tcp)
{
  int compno, resno, bandno, precno, cblkno;

  for (compno = 0; compno < tile->numcomps; compno++) {
    tcd_tilecomp_t *tilec = &tile->comps[compno];
    for (resno = 0; resno < tilec->numresolutions; resno++) {
      tcd_resolution_t *res = &tilec->resolutions[resno];
      for (bandno = 0; bandno < res->numbands; bandno++) {
	tcd_band_t *band = &res->bands[bandno];
	for (precno = 0; precno < res->pw * res->ph; precno++) {
	  tcd_precinct_t *prc = &band->precincts[precno];
	  for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
	    int x, y, i, j, orient;
	    tcd_cblk_t *cblk = &prc->cblks[cblkno];
	    orient = band->bandno;	/* FIXME */
	    if (orient == 2)
	      orient = 1;
	    else if (orient == 1)
	      orient = 2;
	    t1_decode_cblk(cblk, orient,
			   tcp->tccps[compno].roishift,
			   tcp->tccps[compno].cblksty);
	    if (band->bandno == 0) {
	      x = cblk->x0 - band->x0;
	      y = cblk->y0 - band->y0;
	    } else if (band->bandno == 1) {
	      tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
	      x = pres->x1 - pres->x0 + cblk->x0 - band->x0;
	      y = cblk->y0 - band->y0;
	    } else if (band->bandno == 2) {
	      tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
	      x = cblk->x0 - band->x0;
	      y = pres->y1 - pres->y0 + cblk->y0 - band->y0;
	    } else {		/* if (band->bandno == 3) */
	      tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
	      x = pres->x1 - pres->x0 + cblk->x0 - band->x0;
	      y = pres->y1 - pres->y0 + cblk->y0 - band->y0;
	    }

	    if (tcp->tccps[compno].roishift) {
	      int thresh, val, mag;
	      thresh = 1 << tcp->tccps[compno].roishift;
	      for (j = 0; j < cblk->y1 - cblk->y0; j++) {
		for (i = 0; i < cblk->x1 - cblk->x0; i++) {
		  val = t1_data[j][i];
		  mag = int_abs(val);
		  if (mag >= thresh) {
		    mag >>= tcp->tccps[compno].roishift;
		    t1_data[j][i] = val < 0 ? -mag : mag;
		  }
		}
	      }
	    }

	    if (tcp->tccps[compno].qmfbid == 1) {
	      for (j = 0; j < cblk->y1 - cblk->y0; j++) {
		for (i = 0; i < cblk->x1 - cblk->x0; i++) {
		  tilec->data[x + i +
			      (y + j) * (tilec->x1 -
					 tilec->x0)] = t1_data[j][i];
		}
	      }
	    } else {		/* if (tcp->tccps[compno].qmfbid == 0) */

	      for (j = 0; j < cblk->y1 - cblk->y0; j++) {
		for (i = 0; i < cblk->x1 - cblk->x0; i++) {
		  if (t1_data[j][i] == 0) {
		    tilec->data[x + i +
		      (y + j) * (tilec->x1 - tilec->x0)] = 0;
		  } else {
		    // Add antonin : quantizbug1
		    t1_data[j][i]<<=1;
		    //if (cblk->lastbp) 
		    t1_data[j][i]+=t1_data[j][i]>0?1:-1;
		    // ddA
		    tilec->data[x + i +
				(y + j) * (tilec->x1 -
					   tilec->
					   x0)] =
		      fix_mul(t1_data[j][i] << 12, band->stepsize); //Mod Antonin : quantizbug1 (before : << 13)
		  }
		}
	      }
	    }
	  }
	}
      }
    }
  }
}

int t1_init_ctxno_zc(int f, int orient)
{
  int h, v, d, n, t, hv;
  n = 0;
  h = ((f & T1_SIG_W) != 0) + ((f & T1_SIG_E) != 0);
  v = ((f & T1_SIG_N) != 0) + ((f & T1_SIG_S) != 0);
  d = ((f & T1_SIG_NW) != 0) + ((f & T1_SIG_NE) !=
				0) + ((f & T1_SIG_SE) !=
				      0) + ((f & T1_SIG_SW) != 0);
  switch (orient) {
  case 2:
    t = h;
    h = v;
    v = t;
  case 0:
  case 1:
    if (!h) {
      if (!v) {
	if (!d)
	  n = 0;
	else if (d == 1)
	  n = 1;
	else
	  n = 2;
      } else if (v == 1)
	n = 3;
      else
	n = 4;
    } else if (h == 1) {
      if (!v) {
	if (!d)
	  n = 5;
	else
	  n = 6;
      } else
	n = 7;
    } else
      n = 8;
    break;
  case 3:
    hv = h + v;
    if (!d) {
      if (!hv)
	n = 0;
      else if (hv == 1)
	n = 1;
      else
	n = 2;
    } else if (d == 1) {
      if (!hv)
	n = 3;
      else if (hv == 1)
	n = 4;
      else
	n = 5;
    } else if (d == 2) {
      if (!hv)
	n = 6;
      else
	n = 7;
    } else
      n = 8;
    break;
  }
  return T1_CTXNO_ZC + n;
}

int t1_init_ctxno_sc(int f)
{
  int hc, vc, n;
  n = 0;
  hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
		T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
	       1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
			     (T1_SIG_E | T1_SGN_E)) +
			    ((f & (T1_SIG_W | T1_SGN_W)) ==
			     (T1_SIG_W | T1_SGN_W)), 1);
  vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
		T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
	       1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
			     (T1_SIG_N | T1_SGN_N)) +
			    ((f & (T1_SIG_S | T1_SGN_S)) ==
			     (T1_SIG_S | T1_SGN_S)), 1);
  if (hc < 0) {
    hc = -hc;
    vc = -vc;
  }
  if (!hc) {
    if (vc == -1)
      n = 1;
    else if (!vc)
      n = 0;
    else
      n = 1;
  } else if (hc == 1) {
    if (vc == -1)
      n = 2;
    else if (!vc)
      n = 3;
    else
      n = 4;
  }
  return T1_CTXNO_SC + n;
}

int t1_init_ctxno_mag(int f)
{
  int n;
  if (!(f & T1_REFINE))
    n = (f & (T1_SIG_OTH)) ? 1 : 0;
  else
    n = 2;
  return T1_CTXNO_MAG + n;
}

int t1_init_spb(int f)
{
  int hc, vc, n;
  hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
		T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
	       1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
			     (T1_SIG_E | T1_SGN_E)) +
			    ((f & (T1_SIG_W | T1_SGN_W)) ==
			     (T1_SIG_W | T1_SGN_W)), 1);
  vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
		T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
	       1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
			     (T1_SIG_N | T1_SGN_N)) +
			    ((f & (T1_SIG_S | T1_SGN_S)) ==
			     (T1_SIG_S | T1_SGN_S)), 1);
  if (!hc && !vc)
    n = 0;
  else
    n = (!(hc > 0 || (!hc && vc > 0)));
  return n;
}

void t1_init_luts()
{
  int i, j;
  double u, v, t;
  for (j = 0; j < 4; j++) {
    for (i = 0; i < 256; ++i) {
      t1_lut_ctxno_zc[(j << 8) | i] = t1_init_ctxno_zc(i, j);
    }
  }
  for (i = 0; i < 256; i++) {
    t1_lut_ctxno_sc[i] = t1_init_ctxno_sc(i << 4);
  }
  for (j = 0; j < 2; j++) {
    for (i = 0; i < 2048; ++i) {
      t1_lut_ctxno_mag[(j << 11) + i] =
	t1_init_ctxno_mag((j ? T1_REFINE : 0) | i);
    }
  }
  for (i = 0; i < 256; ++i) {
    t1_lut_spb[i] = t1_init_spb(i << 4);
  }
  /* FIXME FIXME FIXME */
  /* printf("nmsedec luts:\n"); */
  for (i = 0; i < (1 << T1_NMSEDEC_BITS); i++) {
    t = i / pow(2, T1_NMSEDEC_FRACBITS);
    u = t;
    v = t - 1.5;
    t1_lut_nmsedec_sig[i] =
      int_max(0,
	      (int) (floor
		     ((u * u - v * v) * pow(2,
					    T1_NMSEDEC_FRACBITS) +
		      0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
    t1_lut_nmsedec_sig0[i] =
      int_max(0,
	      (int) (floor
		     ((u * u) * pow(2, T1_NMSEDEC_FRACBITS) +
		      0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
    u = t - 1.0;
    if (i & (1 << (T1_NMSEDEC_BITS - 1))) {
      v = t - 1.5;
    } else {
      v = t - 0.5;
    }
    t1_lut_nmsedec_ref[i] =
      int_max(0,
	      (int) (floor
		     ((u * u - v * v) * pow(2,
					    T1_NMSEDEC_FRACBITS) +
		      0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
    t1_lut_nmsedec_ref0[i] =
      int_max(0,
	      (int) (floor
		     ((u * u) * pow(2, T1_NMSEDEC_FRACBITS) +
		      0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
  }
}