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_MAXCBLKH];
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)
{
	double w1, w2, wmsedec;
	if (qmfbid == 1) {
		w1 = mct_getnorm(compno);
		w2 = dwt_getnorm(level, orient);
	} else {  /* if (qmfbid == 0) */
		w1 = mct_getnorm_real(compno);
		w2 = dwt_getnorm_real(level, orient);
	}
	wmsedec = w1 * w2 * stepsize * (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 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);

		/* 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;
	/* add TONY */
	char type = T1_TYPE_MQ;
	/* dda */

	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 TONY */
		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 */

		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_reset_enc();

			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;
  
  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);
	  }	/* 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 {
			      tilec->data[x + i + (y + j) * (tilec->x1 - tilec->x0)] = fix_mul(t1_data[j][i] << 13, band->stepsize);
			    }
			  }
			}
		      }
		    }
		}
	    }
	}
    }
}

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));
	}
}