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t1.c

/*
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2005, Francois Devaux and Antonin Descampe
 * Copyright (c) 2005, Hervé Drolon, FreeImage Team
 * Copyright (c) 2002-2005, 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 "opj_includes.h"

/** @defgroup T1 T1 - Implementation of the tier-1 coding */
/*@{*/

/** @name Local static functions */
/*@{*/

static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient);
static int t1_getctxno_sc(opj_t1_t *t1, int f);
static int t1_getctxno_mag(opj_t1_t *t1, int f);
static int t1_getspb(opj_t1_t *t1, int f);
static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos);
static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos);
static void t1_updateflags(int *fp, int s);
/**
Encode significant pass
*/
static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc);
/**
Decode significant pass
*/
static void t1_dec_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc);
/**
Encode significant pass
*/
static void t1_enc_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, char type, int cblksty);
/**
Decode significant pass
*/
static void t1_dec_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, char type, int cblksty);
/**
Encode refinement pass
*/
static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc);
/**
Decode refinement pass
*/
static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc);
/**
Encode refinement pass
*/
static void t1_enc_refpass(opj_t1_t *t1, int w, int h, int bpno, int *nmsedec, char type, int cblksty);
/**
Decode refinement pass
*/
static void t1_dec_refpass(opj_t1_t *t1, int w, int h, int bpno, char type, int cblksty);
/**
Encode clean-up pass
*/
static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc);
/**
Decode clean-up pass
*/
static void t1_dec_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc);
/**
Encode clean-up pass
*/
static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, int cblksty);
/**
Decode clean-up pass
*/
static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int cblksty);
static double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps);
/**
Encode 1 code-block
@param t1 T1 handle
@param cblk Code-block coding parameters
@param orient
@param compno Component number
@param level
@param qmfbid
@param stepsize
@param cblksty Code-block style
@param numcomps
@param tile
*/
static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile);
/**
Decode 1 code-block
@param t1 T1 handle
@param cblk Code-block coding parameters
@param orient
@param roishift Region of interest shifting value
@param cblksty Code-block style
*/
static void t1_decode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int roishift, int cblksty);
static int t1_init_ctxno_zc(int f, int orient);
static int t1_init_ctxno_sc(int f);
static int t1_init_ctxno_mag(int f);
static int t1_init_spb(int f);
/**
Initialize the look-up tables of the Tier-1 coder/decoder
@param t1 T1 handle
*/
static void t1_init_luts(opj_t1_t *t1);

/*@}*/

/*@}*/

/* ----------------------------------------------------------------------- */

static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient) {
      return t1->lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
}

static int t1_getctxno_sc(opj_t1_t *t1, int f) {
      return t1->lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}

static int t1_getctxno_mag(opj_t1_t *t1, int f) {
      return t1->lut_ctxno_mag[(f & T1_SIG_OTH) | (((f & T1_REFINE) != 0) << 11)];
}

static int t1_getspb(opj_t1_t *t1, int f) {
      return t1->lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}

static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos) {
      if (bitpos > T1_NMSEDEC_FRACBITS) {
            return t1->lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
      }
      
      return t1->lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}

static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos) {
      if (bitpos > T1_NMSEDEC_FRACBITS) {
            return t1->lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
      }

    return t1->lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}

static 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;
      }
}

00185 static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc) {
      int v, flag;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      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(mqc, t1_getctxno_zc(t1, flag, orient)); /* ESSAI */
                  mqc_bypass_enc(mqc, v);
            } else {
                  mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
                  mqc_encode(mqc, v);
            }
            if (v) {
                  v = *dp < 0 ? 1 : 0;
                  *nmsedec += t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
                  if (type == T1_TYPE_RAW) {    /* BYPASS/LAZY MODE */
                        mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));   /* ESSAI */
                        mqc_bypass_enc(mqc, v);
                  } else {
                        mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
                        mqc_encode(mqc, v ^ t1_getspb(t1, flag));
                  }
                  t1_updateflags(fp, v);
                  *fp |= T1_SIG;
            }
            *fp |= T1_VISIT;
      }
}

00217 static void t1_dec_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc) {
      int v, flag;
      
      opj_raw_t *raw = t1->raw;     /* RAW component */
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      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(raw)) {
                        v = raw_decode(raw);    /* ESSAI */
                        *dp = v ? -oneplushalf : oneplushalf;
                        t1_updateflags(fp, v);
                        *fp |= T1_SIG;
                  }
            } else {
                  mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
                  if (mqc_decode(mqc)) {
                        mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
                        v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
                        *dp = v ? -oneplushalf : oneplushalf;
                        t1_updateflags(fp, v);
                        *fp |= T1_SIG;
                  }
            }
            *fp |= T1_VISIT;
      }
}                       /* VSC and  BYPASS by Antonin */

00246 static void t1_enc_sigpass(opj_t1_t *t1, 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, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, bpno, one, nmsedec, type, vsc);
                  }
            }
      }
}

00260 static void t1_dec_sigpass(opj_t1_t *t1, 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, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, oneplushalf, type, vsc);
                  }
            }
      }
}                       /* VSC and  BYPASS by Antonin */

00275 static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc) {
      int v, flag;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      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(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
            v = int_abs(*dp) & one ? 1 : 0;
            if (type == T1_TYPE_RAW) {    /* BYPASS/LAZY MODE */
                  mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));  /* ESSAI */
                  mqc_bypass_enc(mqc, v);
            } else {
                  mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
                  mqc_encode(mqc, v);
            }
            *fp |= T1_REFINE;
      }
}

00295 static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc) {
      int v, t, flag;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      opj_raw_t *raw = t1->raw;     /* RAW component */
      
      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(mqc, t1_getctxno_mag(t1, flag));  /* ESSAI */
                  v = raw_decode(raw);
            } else {
                  mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
                  v = mqc_decode(mqc);
            }
            t = v ? poshalf : neghalf;
            *dp += *dp < 0 ? -t : t;
            *fp |= T1_REFINE;
      }
}                       /* VSC and  BYPASS by Antonin  */

00316 static void t1_enc_refpass(opj_t1_t *t1, 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, &t1->flags[1 + j][1 + i], &t1->data[j][i], bpno, one, nmsedec, type, vsc);
                  }
            }
      }
}

00330 static void t1_dec_refpass(opj_t1_t *t1, 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, &t1->flags[1 + j][1 + i], &t1->data[j][i], poshalf, neghalf, type, vsc);
                  }
            }
      }
}                       /* VSC and  BYPASS by Antonin */

00346 static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc) {
      int v, flag;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      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(mqc, t1_getctxno_zc(t1, flag, orient));
            v = int_abs(*dp) & one ? 1 : 0;
            mqc_encode(mqc, v);
            if (v) {
LABEL_PARTIAL:
                  *nmsedec += t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
                  mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
                  v = *dp < 0 ? 1 : 0;
                  mqc_encode(mqc, v ^ t1_getspb(t1, flag));
                  t1_updateflags(fp, v);
                  *fp |= T1_SIG;
            }
      }
      *fp &= ~T1_VISIT;
}

00372 static void t1_dec_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc) {
      int v, flag;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      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(mqc, t1_getctxno_zc(t1, flag, orient));
            if (mqc_decode(mqc)) {
LABEL_PARTIAL:
                  mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
                  v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
                  *dp = v ? -oneplushalf : oneplushalf;
                  t1_updateflags(fp, v);
                  *fp |= T1_SIG;
            }
      }
      *fp &= ~T1_VISIT;
}                       /* VSC and  BYPASS by Antonin */

00395 static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, int cblksty) {
      int i, j, k, one, agg, runlen, vsc;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      *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(mqc, T1_CTXNO_AGG);
                        mqc_encode(mqc, runlen != 4);
                        if (runlen == 4) {
                              continue;
                        }
                        mqc_setcurctx(mqc, T1_CTXNO_UNI);
                        mqc_encode(mqc, runlen >> 1);
                        mqc_encode(mqc, 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, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, bpno, one, nmsedec, agg && (j == k + runlen), vsc);
                  }
            }
      }
}

00444 static void t1_dec_clnpass(opj_t1_t *t1, 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;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      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(mqc, T1_CTXNO_AGG);
                        if (!mqc_decode(mqc)) {
                              continue;
                        }
                        mqc_setcurctx(mqc, T1_CTXNO_UNI);
                        runlen = mqc_decode(mqc);
                        runlen = (runlen << 1) | mqc_decode(mqc);
                  } 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, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, oneplushalf, agg && (j == k + runlen), vsc);
                  }
            }
      }
      if (segsym) {
            int v = 0;
            mqc_setcurctx(mqc, T1_CTXNO_UNI);
            v = mqc_decode(mqc);
            v = (v << 1) | mqc_decode(mqc);
            v = (v << 1) | mqc_decode(mqc);
            v = (v << 1) | mqc_decode(mqc);
            /*
            if (v!=0xa) {
                  opj_event_msg(t1->cinfo, EVT_WARNING, "Bad segmentation symbol %x\n", v);
            } 
            */
      }
}                       /* VSC and  BYPASS by Antonin */


/** mod fixed_quality */
static double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps)    {
      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 * (1 << bpno);
      wmsedec *= wmsedec * nmsedec / 8192.0;
      
      return wmsedec;
}

/** mod fixed_quality */
00521 static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile) {
      int i, j;
      int w, h;
      int passno;
      int bpno, passtype;
      int max;
      int nmsedec = 0;
      double cumwmsedec = 0;
      char type = T1_TYPE_MQ;
      
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      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;
      
      /* Changed by Dmitry Kolyadin */
      for (i = 0; i <= w; i++) {
            for (j = 0; j <= h; j++) {
                  t1->flags[j][i] = 0;
            }
      }
      
      bpno = cblk->numbps - 1;
      passtype = 2;
      
      mqc_resetstates(mqc);
      mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
      mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
      mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
      mqc_init_enc(mqc, cblk->data);
      
      for (passno = 0; bpno >= 0; passno++) {
            opj_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(t1, w, h, bpno, orient, &nmsedec, type, cblksty);
                        break;
                  case 1:
                        t1_enc_refpass(t1, w, h, bpno, &nmsedec, type, cblksty);
                        break;
                  case 2:
                        t1_enc_clnpass(t1, w, h, bpno, orient, &nmsedec, cblksty);
                        /* code switch SEGMARK (i.e. SEGSYM) */
                        if (cblksty & J2K_CCP_CBLKSTY_SEGSYM)
                              mqc_segmark_enc(mqc);
                        break;
            }
            
            /* fixed_quality */
            cumwmsedec += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
            tile->distotile += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
            
            /* Code switch "RESTART" (i.e. TERMALL) */
            if ((cblksty & J2K_CCP_CBLKSTY_TERMALL)   && !((passtype == 2) && (bpno - 1 < 0))) {
                  if (type == T1_TYPE_RAW) {
                        mqc_flush(mqc);
                        correction = 1;
                        /* correction = mqc_bypass_flush_enc(); */
                  } else {                /* correction = mqc_restart_enc(); */
                        mqc_flush(mqc);
                        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(mqc);
                              correction = 1;
                              /* correction = mqc_bypass_flush_enc(); */
                        } else {          /* correction = mqc_restart_enc(); */
                              mqc_flush(mqc);
                              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(mqc);
                  else
                        mqc_restart_init_enc(mqc);
            }
            
            pass->distortiondec = cumwmsedec;
            pass->rate = mqc_numbytes(mqc) + 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(mqc);
      }
      
      /* Code switch "ERTERM" (i.e. PTERM) */
      if (cblksty & J2K_CCP_CBLKSTY_PTERM)
            mqc_erterm_enc(mqc);
      else /* Default coding */ if (!(cblksty & J2K_CCP_CBLKSTY_LAZY))
            mqc_flush(mqc);
      
      cblk->totalpasses = passno;
}

00644 static void t1_decode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int roishift, int cblksty) {
      int i, j, w, h;
      int bpno, passtype;
      int segno, passno;
      char type = T1_TYPE_MQ; /* BYPASS mode */
      
      opj_raw_t *raw = t1->raw;     /* RAW component */
      opj_mqc_t *mqc = t1->mqc;     /* MQC component */
      
      w = cblk->x1 - cblk->x0;
      h = cblk->y1 - cblk->y0;
      
      /* Changed by Dmitry Kolyadin */
      for (j = 0; j <= h; j++) {
            for (i = 0; i <= w; i++) {
                  t1->flags[j][i] = 0;
            }
      }
      
      /* Changed by Dmitry Kolyadin */
      for (i = 0; i < w; i++) {
            for (j = 0; j < h; j++){
                  t1->data[j][i] = 0;
            }
      }
      
      bpno = roishift + cblk->numbps - 1;
      passtype = 2;
      
      mqc_resetstates(mqc);
      mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
      mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
      mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
      
      for (segno = 0; segno < cblk->numsegs; segno++) {
            opj_tcd_seg_t *seg = &cblk->segs[segno];
            
            /* 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(raw, seg->data, seg->len);
            } else {
                  mqc_init_dec(mqc, seg->data, seg->len);
            }
            
            for (passno = 0; passno < seg->numpasses; passno++) {
                  switch (passtype) {
                        case 0:
                              t1_dec_sigpass(t1, w, h, bpno+1, orient, type, cblksty);
                              break;
                        case 1:
                              t1_dec_refpass(t1, w, h, bpno+1, type, cblksty);
                              break;
                        case 2:
                              t1_dec_clnpass(t1, w, h, bpno+1, orient, cblksty);
                              break;
                  }
                  
                  if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) {
                        mqc_resetstates(mqc);
                        mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);                     
                        mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
                        mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
                  }
                  if (++passtype == 3) {
                        passtype = 0;
                        bpno--;
                  }
            }
      }
}

static 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);
}

static 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);
}

static 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);
}

static 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;
}

00864 static void t1_init_luts(opj_t1_t *t1) {
      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 */
      /* fprintf(stdout,"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));
      }
}

/* ----------------------------------------------------------------------- */

00912 opj_t1_t* t1_create(opj_common_ptr cinfo) {
      opj_t1_t *t1 = (opj_t1_t*)opj_malloc(sizeof(opj_t1_t));
      if(t1) {
            t1->cinfo = cinfo;
            /* create MQC and RAW handles */
            t1->mqc = mqc_create();
            t1->raw = raw_create();
            /* initialize the look-up tables of the Tier-1 coder/decoder */
            t1_init_luts(t1);
      }
      return t1;
}

00925 void t1_destroy(opj_t1_t *t1) {
      if(t1) {
            /* destroy MQC and RAW handles */
            mqc_destroy(t1->mqc);
            raw_destroy(t1->raw);
            opj_free(t1);
      }
}

00934 void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) {
      int compno, resno, bandno, precno, cblkno;
      int x, y, i, j, orient;
      
      tile->distotile = 0;          /* fixed_quality */

      for (compno = 0; compno < tile->numcomps; compno++) {
            opj_tcd_tilecomp_t *tilec = &tile->comps[compno];

            for (resno = 0; resno < tilec->numresolutions; resno++) {
                  opj_tcd_resolution_t *res = &tilec->resolutions[resno];

                  for (bandno = 0; bandno < res->numbands; bandno++) {
                        opj_tcd_band_t *band = &res->bands[bandno];

                        for (precno = 0; precno < res->pw * res->ph; precno++) {
                              opj_tcd_precinct_t *prc = &band->precincts[precno];

                              for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
                                    opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];

                                    if (band->bandno == 0) {
                                          x = cblk->x0 - band->x0;
                                          y = cblk->y0 - band->y0;
                                    } else if (band->bandno == 1) {
                                          opj_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) {
                                          opj_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) */
                                          opj_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 / ((int) floor(band->stepsize * 8192))) >> (13 - T1_NMSEDEC_FRACBITS);
                                                }
                                          }
                                    }
                                    orient = band->bandno;  /* FIXME */
                                    if (orient == 2) {
                                          orient = 1;
                                    } else if (orient == 1) {
                                          orient = 2;
                                    }

                                    t1_encode_cblk(t1, cblk, orient, compno, tilec->numresolutions - 1 - resno, tcp->tccps[compno].qmfbid, band->stepsize, tcp->tccps[compno].cblksty, tile->numcomps, tile);

                              } /* cblkno */
                        } /* precno */
                  } /* bandno */
            } /* resno  */
      } /* compno  */
}

01005 void t1_decode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) {
      int compno, resno, bandno, precno, cblkno;
      
      for (compno = 0; compno < tile->numcomps; compno++) {
            opj_tcd_tilecomp_t *tilec = &tile->comps[compno];

            for (resno = 0; resno < tilec->numresolutions; resno++) {
                  opj_tcd_resolution_t *res = &tilec->resolutions[resno];

                  for (bandno = 0; bandno < res->numbands; bandno++) {
                        opj_tcd_band_t *band = &res->bands[bandno];

                        for (precno = 0; precno < res->pw * res->ph; precno++) {
                              opj_tcd_precinct_t *prc = &band->precincts[precno];

                              for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
                                    int x, y, i, j, orient;
                                    opj_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(t1, 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) {
                                          opj_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) {
                                          opj_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) */
                                          opj_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++) {
                                                      int tmp = t1->data[j][i];
                                                      tilec->data[x + i + (y + j) * (tilec->x1 - tilec->x0)] = tmp/2;
                                                }
                                          }
                                    } 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++) {
                                                      double tmp = (double)(t1->data[j][i] * band->stepsize * 4096.0);
                                                      if (t1->data[j][i] >> 1 == 0) {
                                                            tilec->data[x + i + (y + j) * (tilec->x1 - tilec->x0)] = 0;
                                                      } else {
                                                            int tmp2 = ((int) (floor(fabs(tmp)))) + ((int) floor(fabs(tmp*2))%2);
                                                            tilec->data[x + i + (y + j) * (tilec->x1 - tilec->x0)] = ((tmp<0)?-tmp2:tmp2);
                                                      }
                                                }
                                          }
                                    }
                              } /* cblkno */
                        } /* precno */
                  } /* bandno */
            } /* resno */
      } /* compno */
}


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