openjpeg/src/lib/openjp2/t1.c

/*
 * The copyright in this software is being made available under the 2-clauses 
 * BSD License, included below. This software may be subject to other third 
 * party and contributor rights, including patent rights, and no such rights
 * are granted under this license.
 *
 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2014, Professor Benoit Macq
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2007, Francois-Olivier Devaux 
 * Copyright (c) 2003-2014, Antonin Descampe
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * Copyright (c) 2007, Callum Lerwick <seg@haxxed.com>
 * 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"
#include "t1_luts.h"

/* #define CONSISTENCY_CHECK */

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

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

static INLINE OPJ_BYTE opj_t1_getctxno_zc(opj_mqc_t *mqc, OPJ_UINT32 f);
static OPJ_BYTE opj_t1_getctxno_sc(OPJ_UINT32 f);
static INLINE OPJ_UINT32 opj_t1_getctxno_mag(OPJ_UINT32 f);
static OPJ_BYTE opj_t1_getspb(OPJ_UINT32 f);
static OPJ_INT16 opj_t1_getnmsedec_sig(OPJ_UINT32 x, OPJ_UINT32 bitpos);
static OPJ_INT16 opj_t1_getnmsedec_ref(OPJ_UINT32 x, OPJ_UINT32 bitpos);
static INLINE void opj_t1_updateflags(opj_flag_t *flagsp, OPJ_UINT32 s, OPJ_UINT32 stride);
/**
Encode significant pass
*/
static void opj_t1_enc_sigpass_step(opj_t1_t *t1,
                                    opj_flag_t *flagsp,
                                    OPJ_INT32 *datap,
                                    OPJ_INT32 bpno,
                                    OPJ_INT32 one,
                                    OPJ_INT32 *nmsedec,
                                    OPJ_BYTE type,
                                    OPJ_UINT32 vsc);

/**
Decode significant pass
*/
#if 0
static void opj_t1_dec_sigpass_step(opj_t1_t *t1,
                                    opj_flag_t *flagsp,
                                    OPJ_INT32 *datap,
                                    OPJ_UINT32 orient,
                                    OPJ_INT32 oneplushalf,
                                    OPJ_BYTE type,
                                    OPJ_UINT32 vsc);
#endif

static INLINE void opj_t1_dec_sigpass_step_raw(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t* colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 oneplushalf,
                OPJ_INT32 vsc,
                OPJ_UINT32 row);
static INLINE void opj_t1_dec_sigpass_step_mqc(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t* colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 oneplushalf,
                OPJ_UINT32 row,
                OPJ_UINT32 flags_stride);
static INLINE void opj_t1_dec_sigpass_step_mqc_vsc(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t* colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 oneplushalf,
                OPJ_INT32 vsc,
                OPJ_UINT32 row);


/**
Encode significant pass
*/
static void opj_t1_enc_sigpass( opj_t1_t *t1,
                                OPJ_INT32 bpno,
                                OPJ_INT32 *nmsedec,
                                OPJ_BYTE type,
                                OPJ_UINT32 cblksty);

/**
Decode significant pass
*/
static void opj_t1_dec_sigpass_raw(
                opj_t1_t *t1,
                OPJ_INT32 bpno,
                OPJ_INT32 cblksty);
static void opj_t1_dec_sigpass_mqc_vsc(
                opj_t1_t *t1,
                OPJ_INT32 bpno);



/**
Encode refinement pass
*/
static void opj_t1_enc_refpass_step(opj_t1_t *t1,
                                    opj_flag_t *flagsp,
                                    OPJ_INT32 *datap,
                                    OPJ_INT32 bpno,
                                    OPJ_INT32 one,
                                    OPJ_INT32 *nmsedec,
                                    OPJ_BYTE type,
                                    OPJ_UINT32 vsc);


/**
Encode refinement pass
*/
static void opj_t1_enc_refpass( opj_t1_t *t1,
                                OPJ_INT32 bpno,
                                OPJ_INT32 *nmsedec,
                                OPJ_BYTE type,
                                OPJ_UINT32 cblksty);

/**
Decode refinement pass
*/
static void opj_t1_dec_refpass_raw(
                opj_t1_t *t1,
                OPJ_INT32 bpno);
static void opj_t1_dec_refpass_mqc_vsc(
                opj_t1_t *t1,
                OPJ_INT32 bpno);


/**
Decode refinement pass
*/
#if 0
static void opj_t1_dec_refpass_step(opj_t1_t *t1,
                                    opj_flag_t *flagsp,
                                    OPJ_INT32 *datap,
                                    OPJ_INT32 poshalf,
                                    OPJ_INT32 neghalf,
                                    OPJ_BYTE type,
                                    OPJ_UINT32 vsc);
#endif

static INLINE void  opj_t1_dec_refpass_step_raw(
                opj_t1_t *t1,
                opj_colflag_t *colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 poshalf,
                OPJ_INT32 neghalf,
                OPJ_UINT32 row);
static INLINE void opj_t1_dec_refpass_step_mqc(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t *colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 poshalf,
                OPJ_INT32 neghalf,
                OPJ_UINT32 row);
static INLINE void opj_t1_dec_refpass_step_mqc_vsc(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t *colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 poshalf,
                OPJ_INT32 neghalf,
                OPJ_INT32 vsc,
                OPJ_UINT32 row);



/**
Encode clean-up pass
*/
static void opj_t1_enc_clnpass_step(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 bpno,
		OPJ_INT32 one,
		OPJ_INT32 *nmsedec,
		OPJ_UINT32 partial,
		OPJ_UINT32 vsc);
/**
Decode clean-up pass
*/
static void opj_t1_dec_clnpass_step_partial(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		opj_colflag_t *colflagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 oneplushalf,
		OPJ_UINT32 row);
static void opj_t1_dec_clnpass_step(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		opj_colflag_t *colflagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 oneplushalf,
		OPJ_UINT32 row);
static void opj_t1_dec_clnpass_step_vsc(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		opj_colflag_t *colflagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 oneplushalf,
		OPJ_INT32 partial,
		OPJ_INT32 vsc,
		OPJ_UINT32 row);
/**
Encode clean-up pass
*/
static void opj_t1_enc_clnpass(
		opj_t1_t *t1,
		OPJ_INT32 bpno,
		OPJ_INT32 *nmsedec,
		OPJ_UINT32 cblksty);

static OPJ_FLOAT64 opj_t1_getwmsedec(
		OPJ_INT32 nmsedec,
		OPJ_UINT32 compno,
		OPJ_UINT32 level,
		OPJ_UINT32 orient,
		OPJ_INT32 bpno,
		OPJ_UINT32 qmfbid,
		OPJ_FLOAT64 stepsize,
		OPJ_UINT32 numcomps,
		const OPJ_FLOAT64 * mct_norms,
		OPJ_UINT32 mct_numcomps);

static void opj_t1_encode_cblk( opj_t1_t *t1,
                                opj_tcd_cblk_enc_t* cblk,
                                OPJ_UINT32 orient,
                                OPJ_UINT32 compno,
                                OPJ_UINT32 level,
                                OPJ_UINT32 qmfbid,
                                OPJ_FLOAT64 stepsize,
                                OPJ_UINT32 cblksty,
                                OPJ_UINT32 numcomps,
                                opj_tcd_tile_t * tile,
                                const OPJ_FLOAT64 * mct_norms,
                                OPJ_UINT32 mct_numcomps);

/**
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 OPJ_BOOL opj_t1_decode_cblk( opj_t1_t *t1,
                                    opj_tcd_cblk_dec_t* cblk,
                                    OPJ_UINT32 orient,
                                    OPJ_UINT32 roishift,
                                    OPJ_UINT32 cblksty);

static OPJ_BOOL opj_t1_allocate_buffers(   opj_t1_t *t1,
                                    OPJ_UINT32 w,
                                    OPJ_UINT32 h);

/*@}*/

/*@}*/

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

static OPJ_BYTE opj_t1_getctxno_zc(opj_mqc_t *mqc, OPJ_UINT32 f) {
	return mqc->lut_ctxno_zc_orient[(f & T1_SIG_OTH)];
}

static OPJ_BYTE opj_t1_getctxno_sc(OPJ_UINT32 f) {
	return lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}

static OPJ_UINT32 opj_t1_getctxno_mag(OPJ_UINT32 f) {
	OPJ_UINT32 tmp1 = (f & T1_SIG_OTH) ? T1_CTXNO_MAG + 1 : T1_CTXNO_MAG;
	OPJ_UINT32 tmp2 = (f & T1_REFINE) ? T1_CTXNO_MAG + 2 : tmp1;
	return (tmp2);
}

static OPJ_BYTE opj_t1_getspb(OPJ_UINT32 f) {
	return lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}

static OPJ_INT16 opj_t1_getnmsedec_sig(OPJ_UINT32 x, OPJ_UINT32 bitpos) {
	if (bitpos > 0) {
		return lut_nmsedec_sig[(x >> (bitpos)) & ((1 << T1_NMSEDEC_BITS) - 1)];
	}
	
	return lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}

static OPJ_INT16 opj_t1_getnmsedec_ref(OPJ_UINT32 x, OPJ_UINT32 bitpos) {
	if (bitpos > 0) {
		return lut_nmsedec_ref[(x >> (bitpos)) & ((1 << T1_NMSEDEC_BITS) - 1)];
	}

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

static INLINE void opj_t1_updateflags(opj_flag_t *flagsp, OPJ_UINT32 s, OPJ_UINT32 stride) {
	opj_flag_t *np = flagsp - stride;
	opj_flag_t *sp = flagsp + stride;

	/* We strongly rely on (T1_SGN_N == 0x0100) == (T1_SIG_N == 0x0010) << 4 */
	/* and T1_SIG_E == T1_SIG_N << 1, T1_SIG_W == T1_SIG_N << 2 and T1_SIG_S == T1_SIG_N << 2 */
	/* and T1_SGN_E == T1_SGN_N << 1, T1_SGN_W == T1_SGN_N << 2 and T1_SGN_S == T1_SGN_N << 2 */

	unsigned int flag_N = T1_SIG_N | ((unsigned int)T1_SIG_N << (4U * s));

	np[-1] |= T1_SIG_SE;
	np[0]  |= (opj_flag_t)(flag_N << 2U);
	np[1]  |= T1_SIG_SW;

	flagsp[-1] |= (opj_flag_t)(flag_N << 1U);
	flagsp[0]  |= T1_SIG;
	flagsp[1]  |= (opj_flag_t)(flag_N << 3U);

	sp[-1] |= T1_SIG_NE;
	sp[0]  |= (opj_flag_t)flag_N;
	sp[1]  |= T1_SIG_NW;
}

static INLINE void opj_t1_updateflagscolflags(opj_flag_t *flagsp, opj_colflag_t *colflagsp, OPJ_UINT32 s, OPJ_UINT32 stride, OPJ_UINT32 row)
{
	opj_t1_updateflags(flagsp, s, stride);
	if( row == 0U )
	{
			*colflagsp |= (opj_colflag_t)((T1_COLFLAG_SIG_ROW_0 <<  (T1_COLFLAG_RBS * row)) |
						  (T1_COLFLAG_SIG_OTHER_ROW_0 <<  (T1_COLFLAG_RBS * (row+1U))));
			*(colflagsp - 1) |= (opj_colflag_t)((T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row)) |
							    (T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * (row+1U))));
			*(colflagsp + 1) |= (opj_colflag_t)((T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row)) |
								(T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * (row+1U))));
			*(colflagsp - stride - 1) |= (T1_COLFLAG_SIG_OTHER_ROW_3);
			*(colflagsp - stride) |= (T1_COLFLAG_SIG_OTHER_ROW_3);
			*(colflagsp - stride + 1) |= (T1_COLFLAG_SIG_OTHER_ROW_3);
	}
	else if( row == 3U )
	{
			*colflagsp |= (opj_colflag_t)((T1_COLFLAG_SIG_ROW_0 <<  (T1_COLFLAG_RBS * row)) |
						  (T1_COLFLAG_SIG_OTHER_ROW_0 <<  (T1_COLFLAG_RBS * (row-1U))));
			*(colflagsp - 1) |= (opj_colflag_t)((T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row)) |
							    (T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * (row-1U))));
			*(colflagsp + 1) |= (opj_colflag_t)((T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row)) |
								(T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS* (row-1))));
			*(colflagsp + stride - 1) |= (T1_COLFLAG_SIG_OTHER_ROW_0);
			*(colflagsp + stride) |= (T1_COLFLAG_SIG_OTHER_ROW_0);
			*(colflagsp + stride + 1) |= (T1_COLFLAG_SIG_OTHER_ROW_0);
	}
	else
	{
			*(colflagsp - 1) |= (opj_colflag_t)((T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row)) |
								(T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * (row-1U))) |
								(T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * (row+1U))));
			*colflagsp |= (opj_colflag_t)((T1_COLFLAG_SIG_ROW_0 <<  (T1_COLFLAG_RBS * row)) |
						  (T1_COLFLAG_SIG_OTHER_ROW_0 <<  (T1_COLFLAG_RBS * (row-1U))) |
						  (T1_COLFLAG_SIG_OTHER_ROW_0 <<  (T1_COLFLAG_RBS * (row+1U))));
			*(colflagsp + 1) |= (opj_colflag_t)((T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row)) |
								(T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * (row-1U))) |
								(T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * (row+1U))));
	}
}

static void opj_t1_enc_sigpass_step(   opj_t1_t *t1,
                                opj_flag_t *flagsp,
                                OPJ_INT32 *datap,
                                OPJ_INT32 bpno,
                                OPJ_INT32 one,
                                OPJ_INT32 *nmsedec,
                                OPJ_BYTE type,
                                OPJ_UINT32 vsc
                                )
{
	OPJ_INT32 v;
    OPJ_UINT32 flag;
	
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	
	flag = vsc ? (OPJ_UINT32)((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (OPJ_UINT32)(*flagsp);
	if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
		v = (opj_int_abs(*datap) & one) ? 1 : 0;
		opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(mqc, flag));	/* ESSAI */
		if (type == T1_TYPE_RAW) {	/* BYPASS/LAZY MODE */
			opj_mqc_bypass_enc(mqc, (OPJ_UINT32)v);
		} else {
			opj_mqc_encode(mqc, (OPJ_UINT32)v);
		}
		if (v) {
			v = *datap < 0 ? 1 : 0;
			*nmsedec +=	opj_t1_getnmsedec_sig((OPJ_UINT32)opj_int_abs(*datap), (OPJ_UINT32)(bpno));
			opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc(flag));	/* ESSAI */
			if (type == T1_TYPE_RAW) {	/* BYPASS/LAZY MODE */
				opj_mqc_bypass_enc(mqc, (OPJ_UINT32)v);
			} else {
				opj_mqc_encode(mqc, (OPJ_UINT32)(v ^ opj_t1_getspb((OPJ_UINT32)flag)));
			}
			opj_t1_updateflags(flagsp, (OPJ_UINT32)v, t1->flags_stride);
		}
		*flagsp |= T1_VISIT;
	}
}


static INLINE void opj_t1_dec_sigpass_step_raw(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t* colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 oneplushalf,
                OPJ_INT32 vsc,
                OPJ_UINT32 row)
{
        OPJ_UINT32 v, flag;
        opj_raw_t *raw = t1->raw;       /* RAW component */

        flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
        if ((flag & T1_SIG_OTH) && !(*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (T1_COLFLAG_RBS * row)))) {
                        if (opj_raw_decode(raw)) {
                                v = opj_raw_decode(raw);    /* ESSAI */
                                *datap = v ? -oneplushalf : oneplushalf;
                                opj_t1_updateflagscolflags(flagsp, colflagsp, v, t1->flags_stride, row);
                        }
#ifdef CONSISTENCY_CHECK
                *flagsp |= T1_VISIT;
#endif
                *colflagsp |= (opj_colflag_t)(T1_COLFLAG_VISIT_ROW_0 << (T1_COLFLAG_RBS * row));
        }
}      

static INLINE void opj_t1_dec_sigpass_step_mqc(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t* colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 oneplushalf,
                OPJ_UINT32 row,
                OPJ_UINT32 flags_stride)
{
        OPJ_INT32 v, flag;
       
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
#ifdef CONSISTENCY_CHECK
		assert( ((*flagsp & T1_SIG_OTH) && !(*flagsp & (T1_SIG | T1_VISIT))) ==
				((*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0 | T1_COLFLAG_SIG_OTHER_ROW_0) << (T1_COLFLAG_RBS * row))) ==
				  (T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row))) );
#endif
        if( (*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0 | T1_COLFLAG_SIG_OTHER_ROW_0) << (T1_COLFLAG_RBS * row))) ==
            (T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row)) ) {
                        flag = *flagsp;
                        opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(mqc, (OPJ_UINT32)flag));
                        if (opj_mqc_decode(mqc)) {
                                opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc((OPJ_UINT32)flag));
                                v = opj_mqc_decode(mqc) ^ opj_t1_getspb((OPJ_UINT32)flag);
                                *datap = v ? -oneplushalf : oneplushalf;
                                opj_t1_updateflagscolflags(flagsp, colflagsp, (OPJ_UINT32)v, flags_stride, row);
                        }
#ifdef CONSISTENCY_CHECK
                *flagsp |= T1_VISIT;
#endif
                *colflagsp |= (opj_colflag_t)(T1_COLFLAG_VISIT_ROW_0 << (T1_COLFLAG_RBS * row));
        }
}                               /* VSC and  BYPASS by Antonin */

static INLINE void opj_t1_dec_sigpass_step_mqc_vsc(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t* colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 oneplushalf,
                OPJ_INT32 vsc,
                OPJ_UINT32 row)
{
        OPJ_UINT32 v, flag;
       
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
       
        flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
        if ((flag & T1_SIG_OTH) && !(*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (T1_COLFLAG_RBS * row)))) {
                opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(mqc, flag));
                if (opj_mqc_decode(mqc)) {
                        opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc(flag));
                        v = (OPJ_UINT32)opj_mqc_decode(mqc) ^ opj_t1_getspb(flag);
                        *datap = v ? -oneplushalf : oneplushalf;
                        opj_t1_updateflagscolflags(flagsp, colflagsp, v, t1->flags_stride, row);
                }
#ifdef CONSISTENCY_CHECK
                *flagsp |= T1_VISIT;
#endif
                *colflagsp |= (opj_colflag_t)(T1_COLFLAG_VISIT_ROW_0 << (T1_COLFLAG_RBS * row));
        }
}                               /* VSC and  BYPASS by Antonin */



static void opj_t1_enc_sigpass(opj_t1_t *t1,
                        OPJ_INT32 bpno,
                        OPJ_INT32 *nmsedec,
                        OPJ_BYTE type,
                        OPJ_UINT32 cblksty
                        )
{
	OPJ_UINT32 i, j, k, vsc; 
    OPJ_INT32 one;

	*nmsedec = 0;
	one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
	for (k = 0; k < t1->h; k += 4) {
		for (i = 0; i < t1->w; ++i) {
			for (j = k; j < k + 4 && j < t1->h; ++j) {
				vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
				opj_t1_enc_sigpass_step(
						t1,
						&t1->flags[((j+1) * t1->flags_stride) + i + 1],
						&t1->data[(j * t1->data_stride) + i],
						bpno,
						one,
						nmsedec,
						type,
						vsc);
			}
		}
	}
}

static void opj_t1_dec_sigpass_raw(
                opj_t1_t *t1,
                OPJ_INT32 bpno,
                OPJ_INT32 cblksty)
{
        OPJ_INT32 one, half, oneplushalf, vsc;
        OPJ_UINT32 i, j, k; 
        opj_colflag_t *colflags1 = &t1->colflags[t1->flags_stride + 1];
        one = 1 << bpno;
        half = one >> 1;
        oneplushalf = one | half;
        for (k = 0; k < t1->h; k += 4) {
                for (i = 0; i < t1->w; ++i) {
                        opj_colflag_t *colflags2 = colflags1 + i;
                        for (j = k; j < k + 4 && j < t1->h; ++j) {
                                vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
                                opj_t1_dec_sigpass_step_raw(
                                                t1,
                                                &t1->flags[((j+1) * t1->flags_stride) + i + 1],
                                                colflags2,
                                                &t1->data[(j * t1->w) + i],
                                                oneplushalf,
                                                vsc,
                                                j - k);
                        }
                }
                colflags1 += t1->flags_stride;
        }
}                               /* VSC and  BYPASS by Antonin */

#define opj_t1_dec_sigpass_mqc_internal(t1, bpno, w, h, flags_stride) \
{ \
        OPJ_INT32 one, half, oneplushalf; \
        OPJ_UINT32 i, j, k; \
        OPJ_INT32 *data1 = t1->data; \
        opj_flag_t *flags1 = &t1->flags[1]; \
        opj_colflag_t *colflags1 = &t1->colflags[flags_stride + 1]; \
        one = 1 << bpno; \
        half = one >> 1; \
        oneplushalf = one | half; \
        for (k = 0; k < (h & ~3u); k += 4) { \
                for (i = 0; i < w; ++i) { \
                        OPJ_INT32 *data2 = data1 + i; \
                        opj_flag_t *flags2 = flags1 + i; \
                        opj_colflag_t *colflags2 = colflags1 + i; \
                        if( *colflags2 == 0 ) continue; \
                        flags2 += flags_stride; \
                        opj_t1_dec_sigpass_step_mqc(t1, flags2, colflags2, data2, oneplushalf, 0U, flags_stride); \
                        data2 += w; \
                        flags2 += flags_stride; \
                        opj_t1_dec_sigpass_step_mqc(t1, flags2, colflags2, data2, oneplushalf, 1U, flags_stride); \
                        data2 += w; \
                        flags2 += flags_stride; \
                        opj_t1_dec_sigpass_step_mqc(t1, flags2, colflags2, data2, oneplushalf, 2U, flags_stride); \
                        data2 += w; \
                        flags2 += flags_stride; \
                        opj_t1_dec_sigpass_step_mqc(t1, flags2, colflags2, data2, oneplushalf, 3U, flags_stride); \
                        data2 += w; \
                } \
                data1 += w << 2; \
                flags1 += flags_stride << 2; \
                colflags1 += flags_stride; \
        } \
        for (i = 0; i < w; ++i) { \
                OPJ_INT32 *data2 = data1 + i; \
                opj_flag_t *flags2 = flags1 + i; \
                opj_colflag_t *colflags2 = colflags1 + i; \
                for (j = k; j < h; ++j) { \
                        flags2 += flags_stride; \
                        opj_t1_dec_sigpass_step_mqc(t1, flags2, colflags2, data2, oneplushalf, j - k, flags_stride); \
                        data2 += w; \
                } \
        } \
}

static void opj_t1_dec_sigpass_mqc_64x64(
                opj_t1_t *t1,
                OPJ_INT32 bpno)
{
	opj_t1_dec_sigpass_mqc_internal(t1, bpno, 64, 64, 66);
}

static void opj_t1_dec_sigpass_mqc_generic(
                opj_t1_t *t1,
                OPJ_INT32 bpno)
{
	opj_t1_dec_sigpass_mqc_internal(t1, bpno, t1->w, t1->h, t1->flags_stride);
}

/* VSC and  BYPASS by Antonin */
static void opj_t1_dec_sigpass_mqc_vsc(
                opj_t1_t *t1,
                OPJ_INT32 bpno)
{
        OPJ_INT32 one, half, oneplushalf, vsc;
        OPJ_UINT32 i, j, k;
        OPJ_INT32 *data1 = t1->data;
        opj_flag_t *flags1 = &t1->flags[1];
        opj_colflag_t *colflags1 = &t1->colflags[t1->flags_stride + 1];
        one = 1 << bpno;
        half = one >> 1;
        oneplushalf = one | half;
        for (k = 0; k < (t1->h & ~(OPJ_UINT32)3); k += 4U) {
                for (i = 0; i < t1->w; ++i) {
                        OPJ_INT32 *data2 = data1 + i;
                        opj_flag_t *flags2 = flags1 + i;
                        opj_colflag_t *colflags2 = colflags1 + i;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_sigpass_step_mqc_vsc(t1, flags2, colflags2, data2, oneplushalf, 0, 0U);
                        data2 += t1->w;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_sigpass_step_mqc_vsc(t1, flags2, colflags2, data2, oneplushalf, 0, 1U);
                        data2 += t1->w;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_sigpass_step_mqc_vsc(t1, flags2, colflags2, data2, oneplushalf, 0, 2U);
                        data2 += t1->w;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_sigpass_step_mqc_vsc(t1, flags2, colflags2, data2, oneplushalf, 1, 3U);
                        data2 += t1->w;
                }
                data1 += t1->w << 2;
                flags1 += t1->flags_stride << 2;
                colflags1 += t1->flags_stride;
        }
        for (i = 0; i < t1->w; ++i) {
                opj_colflag_t *colflags2 = colflags1 + i;
                for (j = k; j < t1->h; ++j) {
                        vsc = (j == t1->h - 1) ? 1 : 0;
                        opj_t1_dec_sigpass_step_mqc_vsc(
                                        t1,
                                        &t1->flags[((j+1) * t1->flags_stride) + i + 1],
                                        colflags2,
                                        &t1->data[(j * t1->w) + i],
                                        oneplushalf,
                                        vsc,
                                        j - k);
                }
        }
}                               /* VSC and  BYPASS by Antonin */



static void opj_t1_enc_refpass_step(   opj_t1_t *t1,
                                opj_flag_t *flagsp,
                                OPJ_INT32 *datap,
                                OPJ_INT32 bpno,
                                OPJ_INT32 one,
                                OPJ_INT32 *nmsedec,
                                OPJ_BYTE type,
                                OPJ_UINT32 vsc)
{
	OPJ_INT32 v;
	OPJ_UINT32 flag;
	
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	
	flag = vsc ? (OPJ_UINT32)((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (OPJ_UINT32)(*flagsp);
	if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
		*nmsedec += opj_t1_getnmsedec_ref((OPJ_UINT32)opj_int_abs(*datap), (OPJ_UINT32)(bpno));
		v = (opj_int_abs(*datap) & one) ? 1 : 0;
		opj_mqc_setcurctx(mqc, opj_t1_getctxno_mag(flag));	/* ESSAI */
		if (type == T1_TYPE_RAW) {	/* BYPASS/LAZY MODE */
			opj_mqc_bypass_enc(mqc, (OPJ_UINT32)v);
		} else {
			opj_mqc_encode(mqc, (OPJ_UINT32)v);
		}
		*flagsp |= T1_REFINE;
	}
}

static INLINE void opj_t1_dec_refpass_step_raw(
                opj_t1_t *t1,
                opj_colflag_t *colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 poshalf,
                OPJ_INT32 neghalf,
                OPJ_UINT32 row)
{
        OPJ_INT32 v, t;
       
        opj_raw_t *raw = t1->raw;       /* RAW component */
       
        if ((*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (T1_COLFLAG_RBS * row))) ==
            ((T1_COLFLAG_SIG_ROW_0) << (T1_COLFLAG_RBS * row))) {
                        v = (OPJ_INT32)opj_raw_decode(raw);
                t = v ? poshalf : neghalf;
                *datap += *datap < 0 ? -t : t;
                *colflagsp |= (opj_colflag_t)(T1_COLFLAG_REFINE_ROW_0 << (T1_COLFLAG_RBS * row));
        }
}                               /* VSC and  BYPASS by Antonin  */

static INLINE void opj_t1_dec_refpass_step_mqc(
                opj_t1_t *t1,
#ifdef CONSISTENCY_CHECK
                opj_flag_t *flagsp,
#else
                opj_flag_t *flagsp_unused,
#endif
                opj_colflag_t *colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 poshalf,
                OPJ_INT32 neghalf,
                OPJ_UINT32 row)
{
        OPJ_INT32 v, t;
       
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
#ifdef CONSISTENCY_CHECK
		assert( ((*flagsp & (T1_SIG | T1_VISIT)) == T1_SIG) == 
				((*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (T1_COLFLAG_RBS * row))) == ((T1_COLFLAG_SIG_ROW_0) << (T1_COLFLAG_RBS * row))) );
#else
        (void)flagsp_unused;
#endif
        if ((*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (T1_COLFLAG_RBS * row))) ==
            ((T1_COLFLAG_SIG_ROW_0) << (T1_COLFLAG_RBS * row))) {
                OPJ_UINT32 tmp1 = (*colflagsp & (T1_COLFLAG_SIG_OTHER_ROW_0 << (T1_COLFLAG_RBS * row))) ? T1_CTXNO_MAG + 1 : T1_CTXNO_MAG;
                OPJ_UINT32 tmp2 = (*colflagsp & (T1_COLFLAG_REFINE_ROW_0 << (T1_COLFLAG_RBS * row))) ? T1_CTXNO_MAG + 2 : tmp1;
                opj_mqc_setcurctx(mqc, tmp2);      /* ESSAI */
                        v = opj_mqc_decode(mqc);
                t = v ? poshalf : neghalf;
                *datap += *datap < 0 ? -t : t;
                *colflagsp |= (opj_colflag_t)(T1_COLFLAG_REFINE_ROW_0 << (T1_COLFLAG_RBS * row));
                }
}                               /* VSC and  BYPASS by Antonin  */

static INLINE void opj_t1_dec_refpass_step_mqc_vsc(
                opj_t1_t *t1,
                opj_flag_t *flagsp,
                opj_colflag_t *colflagsp,
                OPJ_INT32 *datap,
                OPJ_INT32 poshalf,
                OPJ_INT32 neghalf,
                OPJ_INT32 vsc,
                OPJ_UINT32 row)
{
        OPJ_UINT32 v;
        OPJ_INT32 t;
	
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
       
        if ((*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (T1_COLFLAG_RBS * row))) ==
                ((T1_COLFLAG_SIG_ROW_0) << (T1_COLFLAG_RBS * row))) {
                OPJ_UINT32 flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
                OPJ_UINT32 tmp1 = (flag & T1_SIG_OTH) ? T1_CTXNO_MAG + 1 : T1_CTXNO_MAG;
                OPJ_UINT32 tmp2 = (*colflagsp & (T1_COLFLAG_REFINE_ROW_0 << (T1_COLFLAG_RBS * row))) ? T1_CTXNO_MAG + 2U : tmp1;
                opj_mqc_setcurctx(mqc, tmp2);      /* ESSAI */
                v = (OPJ_UINT32)opj_mqc_decode(mqc);
                t = v ? poshalf : neghalf;
                *datap += *datap < 0 ? -t : t;
                *colflagsp |= (opj_colflag_t)(T1_COLFLAG_REFINE_ROW_0 << (T1_COLFLAG_RBS * row));
        }
}                               /* VSC and  BYPASS by Antonin  */


static void opj_t1_enc_refpass(
		opj_t1_t *t1,
		OPJ_INT32 bpno,
		OPJ_INT32 *nmsedec,
		OPJ_BYTE type,
		OPJ_UINT32 cblksty)
{
	OPJ_UINT32 i, j, k, vsc;
    OPJ_INT32 one;

	*nmsedec = 0;
	one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
	for (k = 0; k < t1->h; k += 4) {
		for (i = 0; i < t1->w; ++i) {
			for (j = k; j < k + 4 && j < t1->h; ++j) {
				vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
				opj_t1_enc_refpass_step(
						t1,
						&t1->flags[((j+1) * t1->flags_stride) + i + 1],
						&t1->data[(j * t1->data_stride) + i],
						bpno,
						one,
						nmsedec,
						type,
						vsc);
			}
		}
	}
}

static void opj_t1_dec_refpass_raw(
                opj_t1_t *t1,
                OPJ_INT32 bpno)
{
        OPJ_INT32 one, poshalf, neghalf;
        OPJ_UINT32 i, j, k;
        opj_colflag_t *colflags1 = &t1->colflags[t1->flags_stride + 1];
        one = 1 << bpno;
        poshalf = one >> 1;
        neghalf = bpno > 0 ? -poshalf : -1;
        for (k = 0; k < t1->h; k += 4) {
                for (i = 0; i < t1->w; ++i) {
                        opj_colflag_t *colflags2 = colflags1 + i;
                        for (j = k; j < k + 4 && j < t1->h; ++j) {
                                opj_t1_dec_refpass_step_raw(
                                                t1,
                                                colflags2,
                                                &t1->data[(j * t1->w) + i],
                                                poshalf,
                                                neghalf, j - k);
                        }
                }
                colflags1 += t1->flags_stride;
        }
}                               /* VSC and  BYPASS by Antonin */

#define opj_t1_dec_refpass_mqc_internal(t1, bpno, w, h, flags_stride) \
{ \
        OPJ_INT32 one, poshalf, neghalf; \
        OPJ_UINT32 i, j, k; \
        OPJ_INT32 *data1 = t1->data; \
        opj_flag_t *flags1 = &t1->flags[1]; \
        opj_colflag_t *colflags1 = &t1->colflags[flags_stride + 1]; \
        one = 1 << bpno; \
        poshalf = one >> 1; \
        neghalf = bpno > 0 ? -poshalf : -1; \
        for (k = 0; k < (h & ~3u); k += 4) { \
                for (i = 0; i < w; ++i) { \
                        OPJ_INT32 *data2 = data1 + i; \
                        opj_flag_t *flags2 = flags1 + i; \
                        opj_colflag_t *colflags2 = colflags1 + i; \
                        if( *colflags2 == 0 ) continue; \
                        flags2 += flags_stride; \
                        opj_t1_dec_refpass_step_mqc(t1, flags2, colflags2, data2, poshalf, neghalf, 0U); \
                        data2 += w; \
                        flags2 += flags_stride; \
                        opj_t1_dec_refpass_step_mqc(t1, flags2, colflags2, data2, poshalf, neghalf, 1U); \
                        data2 += w; \
                        flags2 += flags_stride; \
                        opj_t1_dec_refpass_step_mqc(t1, flags2, colflags2, data2, poshalf, neghalf, 2U); \
                        data2 += w; \
                        flags2 += flags_stride; \
                        opj_t1_dec_refpass_step_mqc(t1, flags2, colflags2, data2, poshalf, neghalf, 3U); \
                        data2 += w; \
                } \
                data1 += w << 2; \
                flags1 += flags_stride << 2; \
                colflags1 += flags_stride; \
        } \
        for (i = 0; i < w; ++i) { \
                OPJ_INT32 *data2 = data1 + i; \
                opj_flag_t *flags2 = flags1 + i; \
                opj_colflag_t *colflags2 = colflags1 + i; \
                for (j = k; j < h; ++j) { \
                        flags2 += flags_stride; \
                        opj_t1_dec_refpass_step_mqc(t1, flags2, colflags2, data2, poshalf, neghalf, j - k); \
                        data2 += w; \
                } \
        } \
}

static void opj_t1_dec_refpass_mqc_64x64(
                opj_t1_t *t1,
                OPJ_INT32 bpno)
{
	opj_t1_dec_refpass_mqc_internal(t1, bpno, 64, 64, 66);
}

static void opj_t1_dec_refpass_mqc_generic(
                opj_t1_t *t1,
                OPJ_INT32 bpno)
{
	opj_t1_dec_refpass_mqc_internal(t1, bpno, t1->w, t1->h, t1->flags_stride);
}

/* VSC and  BYPASS by Antonin */
static void opj_t1_dec_refpass_mqc_vsc(
                opj_t1_t *t1,
                OPJ_INT32 bpno)
{
        OPJ_INT32 one, poshalf, neghalf;
        OPJ_UINT32 i, j, k;
        OPJ_INT32 vsc;
        OPJ_INT32 *data1 = t1->data;
        opj_flag_t *flags1 = &t1->flags[1];
        opj_colflag_t *colflags1 = &t1->colflags[t1->flags_stride + 1];
        one = 1 << bpno;
        poshalf = one >> 1;
        neghalf = bpno > 0 ? -poshalf : -1;
        for (k = 0; k < (t1->h & ~(OPJ_UINT32)3U); k += 4U) {
                for (i = 0; i < t1->w; ++i) {
                        OPJ_INT32 *data2 = data1 + i;
                        opj_flag_t *flags2 = flags1 + i;
                        opj_colflag_t *colflags2 = colflags1 + i;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_refpass_step_mqc_vsc(t1, flags2, colflags2, data2, poshalf, neghalf, 0, 0U);
                        data2 += t1->w;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_refpass_step_mqc_vsc(t1, flags2, colflags2, data2, poshalf, neghalf, 0, 1U);
                        data2 += t1->w;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_refpass_step_mqc_vsc(t1, flags2, colflags2, data2, poshalf, neghalf, 0, 2U);
                        data2 += t1->w;
                        flags2 += t1->flags_stride;
                        opj_t1_dec_refpass_step_mqc_vsc(t1, flags2, colflags2, data2, poshalf, neghalf, 1, 3U);
                        data2 += t1->w;
                }
                data1 += t1->w << 2;
                flags1 += t1->flags_stride << 2;
                colflags1 += t1->flags_stride;
        }
        for (i = 0; i < t1->w; ++i) {
                opj_colflag_t *colflags2 = colflags1 + i;
                for (j = k; j < t1->h; ++j) {
                        vsc = (j == t1->h - 1) ? 1 : 0;
                        opj_t1_dec_refpass_step_mqc_vsc(
                                        t1,
                                        &t1->flags[((j+1) * t1->flags_stride) + i + 1],
                                        colflags2,
                                        &t1->data[(j * t1->w) + i],
                                        poshalf, neghalf,
                                        vsc,
                                        j - k);
                }
        }
}                               /* VSC and  BYPASS by Antonin */


static void opj_t1_enc_clnpass_step(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 bpno,
		OPJ_INT32 one,
		OPJ_INT32 *nmsedec,
		OPJ_UINT32 partial,
		OPJ_UINT32 vsc)
{
	OPJ_INT32 v;
	OPJ_UINT32 flag;
	
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	
	flag = vsc ? (OPJ_UINT32)((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (OPJ_UINT32)(*flagsp);
	if (partial) {
		goto LABEL_PARTIAL;
	}
	if (!(*flagsp & (T1_SIG | T1_VISIT))) {
		opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(mqc, flag));
		v = (opj_int_abs(*datap) & one) ? 1 : 0;
		opj_mqc_encode(mqc, (OPJ_UINT32)v);
		if (v) {
LABEL_PARTIAL:
			*nmsedec += opj_t1_getnmsedec_sig((OPJ_UINT32)opj_int_abs(*datap), (OPJ_UINT32)(bpno));
			opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc(flag));
			v = *datap < 0 ? 1 : 0;
			opj_mqc_encode(mqc, (OPJ_UINT32)(v ^ opj_t1_getspb((OPJ_UINT32)flag)));
			opj_t1_updateflags(flagsp, (OPJ_UINT32)v, t1->flags_stride);
		}
	}
	*flagsp &= (opj_flag_t)~T1_VISIT;
}

static void opj_t1_dec_clnpass_step_partial(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		opj_colflag_t *colflagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 oneplushalf,
		OPJ_UINT32 row)
{
	OPJ_INT32 v, flag;
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	
	flag = *flagsp;
	opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc((OPJ_UINT32)flag));
	v = opj_mqc_decode(mqc) ^ opj_t1_getspb((OPJ_UINT32)flag);
	*datap = v ? -oneplushalf : oneplushalf;
	opj_t1_updateflagscolflags(flagsp, colflagsp, (OPJ_UINT32)v, t1->flags_stride, row);
#ifdef CONSISTENCY_CHECK
	*flagsp &= ~T1_VISIT;
#endif
}				/* VSC and  BYPASS by Antonin */

static void opj_t1_dec_clnpass_step(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		opj_colflag_t *colflagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 oneplushalf,
		OPJ_UINT32 row)
{
	OPJ_INT32 v, flag;
	
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
#ifdef CONSISTENCY_CHECK
	assert( (!(*flagsp & (T1_SIG | T1_VISIT))) == (!(*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (4*row)))) );
#endif
	if (!(*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (4*row)))) {
		flag = *flagsp;
		opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(mqc, (OPJ_UINT32)flag));
		if (opj_mqc_decode(mqc)) {
			opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc((OPJ_UINT32)flag));
			v = opj_mqc_decode(mqc) ^ opj_t1_getspb((OPJ_UINT32)flag);
			*datap = v ? -oneplushalf : oneplushalf;
			opj_t1_updateflagscolflags(flagsp, colflagsp, (OPJ_UINT32)v, t1->flags_stride, row);
		}
	}
#ifdef CONSISTENCY_CHECK
	*flagsp &= ~T1_VISIT;
#endif
}				/* VSC and  BYPASS by Antonin */

static void opj_t1_dec_clnpass_step_only_if_flag_not_sig_visit(
        opj_t1_t *t1,
        opj_flag_t *flagsp,
        opj_colflag_t *colflagsp,
        OPJ_INT32 *datap,
        OPJ_INT32 oneplushalf,
        OPJ_UINT32 row,
        OPJ_UINT32 flags_stride)
{
    OPJ_INT32 v;
    OPJ_INT32 flag;

    opj_mqc_t *mqc = t1->mqc;   /* MQC component */

    flag = *flagsp;
    /*if (!(flag & (T1_SIG | T1_VISIT)))*/
    {
        opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(mqc, (OPJ_UINT32)flag));
        if (opj_mqc_decode(mqc)) {
            opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc((OPJ_UINT32)flag));
            v = opj_mqc_decode(mqc) ^ opj_t1_getspb((OPJ_UINT32)flag);
            *datap = v ? -oneplushalf : oneplushalf;
            opj_t1_updateflagscolflags(flagsp, colflagsp, (OPJ_UINT32)v, flags_stride, row);
        }
    }
    /*flagsp &= ~T1_VISIT;*/
}

static void opj_t1_dec_clnpass_step_vsc(
		opj_t1_t *t1,
		opj_flag_t *flagsp,
		opj_colflag_t *colflagsp,
		OPJ_INT32 *datap,
		OPJ_INT32 oneplushalf,
		OPJ_INT32 partial,
		OPJ_INT32 vsc,
		OPJ_UINT32 row)
{
	OPJ_UINT32 v, flag;
	
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	
	flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
	if (partial) {
		goto LABEL_PARTIAL;
	}
	if (!(*colflagsp & ((T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0) << (T1_COLFLAG_RBS * row)))) {
		opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(mqc, flag));
		if (opj_mqc_decode(mqc)) {
LABEL_PARTIAL:
			opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc(flag));
			v = (OPJ_UINT32)opj_mqc_decode(mqc) ^ opj_t1_getspb(flag);
			*datap = v ? -oneplushalf : oneplushalf;
			opj_t1_updateflagscolflags(flagsp, colflagsp, v, t1->flags_stride, row);
		}
	}
#ifdef CONSISTENCY_CHECK
	*flagsp &= ~T1_VISIT;
#endif
}

static void opj_t1_enc_clnpass(
		opj_t1_t *t1,
		OPJ_INT32 bpno,
		OPJ_INT32 *nmsedec,
		OPJ_UINT32 cblksty)
{
	OPJ_UINT32 i, j, k;
	OPJ_INT32 one;
	OPJ_UINT32 agg, runlen, vsc;
	
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	
	*nmsedec = 0;
	one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
	for (k = 0; k < t1->h; k += 4) {
		for (i = 0; i < t1->w; ++i) {
			if (k + 3 < t1->h) {
				if (cblksty & J2K_CCP_CBLKSTY_VSC) {
					agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
						|| MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
						|| MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
						|| (MACRO_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 = !((MACRO_t1_flags(1 + k,1 + i) | 
						    MACRO_t1_flags(1 + k + 1,1 + i) |
						    MACRO_t1_flags(1 + k + 2,1 + i) | 
						     MACRO_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 (opj_int_abs(t1->data[((k + runlen)*t1->data_stride) + i]) & one)
						break;
				}
				opj_mqc_setcurctx(mqc, T1_CTXNO_AGG);
				opj_mqc_encode(mqc, runlen != 4);
				if (runlen == 4) {
					continue;
				}
				opj_mqc_setcurctx(mqc, T1_CTXNO_UNI);
				opj_mqc_encode(mqc, runlen >> 1);
				opj_mqc_encode(mqc, runlen & 1);
			} else {
				runlen = 0;
			}
			for (j = k + runlen; j < k + 4 && j < t1->h; ++j) {
				vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
				opj_t1_enc_clnpass_step(
						t1,
						&t1->flags[((j+1) * t1->flags_stride) + i + 1],
						&t1->data[(j * t1->data_stride) + i],
						bpno,
						one,
						nmsedec,
						agg && (j == k + runlen),
						vsc);
			}
		}
	}
}

#define MACRO_t1_flags_internal(x,y,flags_stride) t1->flags[((x)*(flags_stride))+(y)]

#define opj_t1_dec_clnpass_internal(consistency_check, t1, bpno, cblksty, w, h, flags_stride) \
{ \
	OPJ_INT32 one, half, oneplushalf, agg, runlen, vsc; \
	OPJ_UINT32 i, j, k; \
	OPJ_INT32 segsym = cblksty & J2K_CCP_CBLKSTY_SEGSYM; \
	 \
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */ \
	 \
	one = 1 << bpno; \
	half = one >> 1; \
	oneplushalf = one | half; \
	if (cblksty & J2K_CCP_CBLKSTY_VSC) { \
	opj_colflag_t *colflags1 = &t1->colflags[flags_stride + 1]; \
	for (k = 0; k < h; k += 4) { \
		for (i = 0; i < w; ++i) { \
			opj_colflag_t *colflags2 = colflags1 + i; \
			if (k + 3 < h) { \
					agg = !((*colflags2 & (T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0 | T1_COLFLAG_SIG_OTHER_ROW_0 | \
						                   T1_COLFLAG_SIG_ROW_1 | T1_COLFLAG_VISIT_ROW_1 | T1_COLFLAG_SIG_OTHER_ROW_1 | \
						                   T1_COLFLAG_SIG_ROW_2 | T1_COLFLAG_VISIT_ROW_2 | T1_COLFLAG_SIG_OTHER_ROW_2 | \
						                   T1_COLFLAG_SIG_ROW_3 | T1_COLFLAG_VISIT_ROW_3)) || \
						  ((MACRO_t1_flags_internal(1 + k + 3,1 + i,flags_stride) \
						   & ((~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW |	T1_SGN_S))) & (T1_SIG_OTH)))); \
				} else { \
				agg = 0; \
			} \
			if (agg) { \
				opj_mqc_setcurctx(mqc, T1_CTXNO_AGG); \
				if (!opj_mqc_decode(mqc)) { \
					continue; \
				} \
				opj_mqc_setcurctx(mqc, T1_CTXNO_UNI); \
				runlen = opj_mqc_decode(mqc); \
				runlen = (runlen << 1) | opj_mqc_decode(mqc); \
			} else { \
				runlen = 0; \
			} \
			for (j = k + (OPJ_UINT32)runlen; j < k + 4 && j < h; ++j) { \
					vsc = (j == k + 3 || j == h - 1) ? 1 : 0; \
					opj_t1_dec_clnpass_step_vsc( \
						t1, \
						&t1->flags[((j+1) * flags_stride) + i + 1], \
						colflags2, \
						&t1->data[(j * w) + i], \
						oneplushalf, \
						agg && (j == k + (OPJ_UINT32)runlen), \
						vsc, j - k); \
			} \
			*colflags2 &= (opj_colflag_t)~(T1_COLFLAG_VISIT_ROW_0 | T1_COLFLAG_VISIT_ROW_1 | T1_COLFLAG_VISIT_ROW_2 | T1_COLFLAG_VISIT_ROW_3); \
		} \
		colflags1 += flags_stride; \
	} \
	} else { \
		OPJ_INT32 *data1 = t1->data; \
		opj_flag_t *flags1 = &t1->flags[1]; \
		opj_colflag_t *colflags1 = &t1->colflags[flags_stride + 1]; \
		for (k = 0; k < (h & ~3u); k += 4) { \
			for (i = 0; i < w; ++i) { \
				OPJ_INT32 *data2 = data1 + i; \
				opj_flag_t *flags2 = flags1 + i; \
				opj_colflag_t *colflags2 = colflags1 + i; \
				opj_colflag_t colflags = *colflags2; \
				agg = !(colflags & (T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0 | T1_COLFLAG_SIG_OTHER_ROW_0 | \
									 T1_COLFLAG_SIG_ROW_1 | T1_COLFLAG_VISIT_ROW_1 | T1_COLFLAG_SIG_OTHER_ROW_1 | \
								 	 T1_COLFLAG_SIG_ROW_2 | T1_COLFLAG_VISIT_ROW_2 | T1_COLFLAG_SIG_OTHER_ROW_2 | \
									 T1_COLFLAG_SIG_ROW_3 | T1_COLFLAG_VISIT_ROW_3 | T1_COLFLAG_SIG_OTHER_ROW_3)); \
				if( consistency_check ) { \
					assert( agg == !((MACRO_t1_flags_internal(1 + k, 1 + i,flags_stride) | \
									  MACRO_t1_flags_internal(1 + k + 1, 1 + i,flags_stride) | \
									  MACRO_t1_flags_internal(1 + k + 2, 1 + i,flags_stride) | \
									  MACRO_t1_flags_internal(1 + k + 3, 1 + i,flags_stride)) & (T1_SIG | T1_VISIT | T1_SIG_OTH)) ); \
				} \
				if (agg) { \
					opj_mqc_setcurctx(mqc, T1_CTXNO_AGG); \
					if (!opj_mqc_decode(mqc)) { \
						continue; \
					} \
					opj_mqc_setcurctx(mqc, T1_CTXNO_UNI); \
					runlen = opj_mqc_decode(mqc); \
					runlen = (runlen << 1) | opj_mqc_decode(mqc); \
					flags2 += (OPJ_UINT32)runlen * flags_stride; \
					data2 += (OPJ_UINT32)runlen * w; \
					for (j = (OPJ_UINT32)runlen; j < 4; ++j) { \
						flags2 += flags_stride; \
						if (j == (OPJ_UINT32)runlen) { \
							opj_t1_dec_clnpass_step_partial(t1, flags2, colflags2, data2, oneplushalf, j); \
						} else { \
							opj_t1_dec_clnpass_step(t1, flags2, colflags2, data2, oneplushalf, j); \
						} \
						data2 += w; \
					} \
				} else { \
					flags2 += flags_stride; \
					if( consistency_check ) { assert( (!(colflags & (T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0))) == (!(*flags2 & (T1_SIG | T1_VISIT))) ); } \
					if (!(colflags & (T1_COLFLAG_SIG_ROW_0 | T1_COLFLAG_VISIT_ROW_0))) {\
						opj_t1_dec_clnpass_step_only_if_flag_not_sig_visit(t1, flags2, colflags2, data2, oneplushalf, 0U, flags_stride); \
					} \
					if( consistency_check ) *flags2 &= (opj_flag_t)~T1_VISIT; \
					data2 += w; \
					flags2 += flags_stride; \
					if( consistency_check ) { assert( (!(colflags & (T1_COLFLAG_SIG_ROW_1 | T1_COLFLAG_VISIT_ROW_1))) == (!(*flags2 & (T1_SIG | T1_VISIT))) ); } \
					if (!(colflags & (T1_COLFLAG_SIG_ROW_1 | T1_COLFLAG_VISIT_ROW_1))) {\
						opj_t1_dec_clnpass_step_only_if_flag_not_sig_visit(t1, flags2, colflags2, data2, oneplushalf, 1U, flags_stride); \
					} \
					if( consistency_check ) *flags2 &= (opj_flag_t)~T1_VISIT; \
					data2 += w; \
					flags2 += flags_stride; \
					if( consistency_check ) { assert( (!(colflags & (T1_COLFLAG_SIG_ROW_2 | T1_COLFLAG_VISIT_ROW_2))) == (!(*flags2 & (T1_SIG | T1_VISIT))) ); } \
					if (!(colflags & (T1_COLFLAG_SIG_ROW_2 | T1_COLFLAG_VISIT_ROW_2))) {\
						opj_t1_dec_clnpass_step_only_if_flag_not_sig_visit(t1, flags2, colflags2, data2, oneplushalf, 2U, flags_stride); \
					} \
					if( consistency_check ) *flags2 &= (opj_flag_t)~T1_VISIT; \
					data2 += w; \
					flags2 += flags_stride; \
					if( consistency_check ) { assert( (!(colflags & (T1_COLFLAG_SIG_ROW_3 | T1_COLFLAG_VISIT_ROW_3))) == (!(*flags2 & (T1_SIG | T1_VISIT))) ); } \
					if (!(colflags & (T1_COLFLAG_SIG_ROW_3 | T1_COLFLAG_VISIT_ROW_3))) {\
						opj_t1_dec_clnpass_step_only_if_flag_not_sig_visit(t1, flags2, colflags2, data2, oneplushalf, 3U, flags_stride); \
					} \
					if( consistency_check ) *flags2 &= (opj_flag_t)~T1_VISIT; \
					data2 += w; \
				} \
				*colflags2 &= (opj_colflag_t)~(T1_COLFLAG_VISIT_ROW_0 | T1_COLFLAG_VISIT_ROW_1 | T1_COLFLAG_VISIT_ROW_2 | T1_COLFLAG_VISIT_ROW_3); \
			} \
			data1 += w << 2; \
			flags1 += flags_stride << 2; \
			colflags1 += flags_stride; \
		} \
		for (i = 0; i < w; ++i) { \
			OPJ_INT32 *data2 = data1 + i; \
			opj_flag_t *flags2 = flags1 + i; \
			opj_colflag_t *colflags2 = colflags1 + i; \
			for (j = k; j < h; ++j) { \
				flags2 += flags_stride; \
				opj_t1_dec_clnpass_step(t1, flags2, colflags2, data2, oneplushalf, j - k); \
				data2 += w; \
			} \
			*colflags2 &= (opj_colflag_t)~(T1_COLFLAG_VISIT_ROW_0 | T1_COLFLAG_VISIT_ROW_1 | T1_COLFLAG_VISIT_ROW_2 | T1_COLFLAG_VISIT_ROW_3); \
		} \
	} \
 \
	if (segsym) { \
		OPJ_INT32 v = 0; \
		opj_mqc_setcurctx(mqc, T1_CTXNO_UNI); \
		v = opj_mqc_decode(mqc); \
		v = (v << 1) | opj_mqc_decode(mqc); \
		v = (v << 1) | opj_mqc_decode(mqc); \
		v = (v << 1) | opj_mqc_decode(mqc); \
		/* \
		if (v!=0xa) { \
			opj_event_msg(t1->cinfo, EVT_WARNING, "Bad segmentation symbol %x\n", v); \
		} \
		*/ \
	} \
}				/* VSC and  BYPASS by Antonin */

static void opj_t1_dec_clnpass_64x64(
		opj_t1_t *t1,
		OPJ_INT32 bpno,
		OPJ_INT32 cblksty)
{
#ifdef CONSISTENCY_CHECK
	opj_t1_dec_clnpass_internal(OPJ_TRUE, t1, bpno, cblksty, 64, 64, 66);
#else
	opj_t1_dec_clnpass_internal(OPJ_FALSE, t1, bpno, cblksty, 64, 64, 66);
#endif
}

static void opj_t1_dec_clnpass_generic(
		opj_t1_t *t1,
		OPJ_INT32 bpno,
		OPJ_INT32 cblksty)
{
#ifdef CONSISTENCY_CHECK
	opj_t1_dec_clnpass_internal(OPJ_TRUE, t1, bpno, cblksty, t1->w, t1->h, t1->flags_stride);
#else
	opj_t1_dec_clnpass_internal(OPJ_FALSE, t1, bpno, cblksty, t1->w, t1->h, t1->flags_stride);
#endif
}


/** mod fixed_quality */
static OPJ_FLOAT64 opj_t1_getwmsedec(
		OPJ_INT32 nmsedec,
		OPJ_UINT32 compno,
		OPJ_UINT32 level,
		OPJ_UINT32 orient,
		OPJ_INT32 bpno,
		OPJ_UINT32 qmfbid,
		OPJ_FLOAT64 stepsize,
		OPJ_UINT32 numcomps,
		const OPJ_FLOAT64 * mct_norms,
		OPJ_UINT32 mct_numcomps)
{
	OPJ_FLOAT64 w1 = 1, w2, wmsedec;
	OPJ_ARG_NOT_USED(numcomps);

	if (mct_norms && (compno < mct_numcomps)) {
		w1 = mct_norms[compno];
	}

	if (qmfbid == 1) {
		w2 = opj_dwt_getnorm(level, orient);
	} else {	/* if (qmfbid == 0) */
		w2 = opj_dwt_getnorm_real(level, orient);
	}

	wmsedec = w1 * w2 * stepsize * (1 << bpno);
	wmsedec *= wmsedec * nmsedec / 8192.0;

	return wmsedec;
}

static OPJ_BOOL opj_t1_allocate_buffers(
		opj_t1_t *t1,
		OPJ_UINT32 w,
		OPJ_UINT32 h)
{
	/* encoder uses tile buffer, so no need to allocate */
	if (!t1->encoder) {
		size_t datasize;
		
#if (SIZE_MAX / 0xFFFFFFFFU) < 0xFFFFFFFFU /* UINT32_MAX */
		/* Overflow check */
		if ((w > 0U) && ((size_t)h > (SIZE_MAX / (size_t)w))) {
			/* FIXME event manager error callback */
			return OPJ_FALSE;
		}
#endif
		datasize = (size_t)w * h;

		/* Overflow check */
		if (datasize > (SIZE_MAX / sizeof(OPJ_INT32))) {
			/* FIXME event manager error callback */
			return OPJ_FALSE;
		}

		if(datasize > (size_t)t1->datasize){
			opj_aligned_free(t1->data);
			t1->data = (OPJ_INT32*) opj_aligned_malloc(datasize * sizeof(OPJ_INT32));
			if(!t1->data){
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
#if SIZE_MAX > 0xFFFFFFFFU /* UINT32_MAX */
			/* TODO remove this if t1->datasize type changes to size_t */
			/* Overflow check */
			if (datasize > (size_t)0xFFFFFFFFU /* UINT32_MAX */) {
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
#endif
			t1->datasize = (OPJ_UINT32)datasize;
		}
		/* memset first arg is declared to never be null by gcc */
		if (t1->data != NULL) {
			memset(t1->data, 0, datasize * sizeof(OPJ_INT32));
		}
	}

	{
		size_t flagssize;

		/* Overflow check */
		if (w > (0xFFFFFFFFU /* UINT32_MAX */ - 2U)) {
			/* FIXME event manager error callback */
			return OPJ_FALSE;
		}
		t1->flags_stride = w + 2U; /* can't be 0U */

#if (SIZE_MAX - 3U) < 0xFFFFFFFFU /* UINT32_MAX */
		/* Overflow check */
		if (h > (0xFFFFFFFFU /* UINT32_MAX */ - 3U)) {
			/* FIXME event manager error callback */
			return OPJ_FALSE;
		}
#endif
		flagssize = (size_t)h + 3U;
		
		/* Overflow check */
		if (flagssize > (SIZE_MAX / (size_t)t1->flags_stride)) {
			/* FIXME event manager error callback */
			return OPJ_FALSE;
		}
		flagssize *= (size_t)t1->flags_stride;

		if(flagssize > (size_t)t1->flagssize){
			/* Overflow check */
			if (flagssize > (SIZE_MAX / sizeof(opj_flag_t))) {
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
			opj_aligned_free(t1->flags);
			t1->flags = (opj_flag_t*) opj_aligned_malloc(flagssize * sizeof(opj_flag_t));
			if(!t1->flags){
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
#if SIZE_MAX > 0xFFFFFFFFU /* UINT32_MAX */
			/* TODO remove this if t1->flagssize type changes to size_t */
			/* Overflow check */
			if (flagssize > (size_t)0xFFFFFFFFU /* UINT32_MAX */) {
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
#endif
			t1->flagssize = (OPJ_UINT32)flagssize;
		}
		memset(t1->flags, 0, flagssize * sizeof(opj_flag_t));
	}
	if (!t1->encoder) {
		size_t colflags_size = ((((size_t)h + 3U) / 4U) + 2U); /* Can't overflow, h checked against UINT32_MAX - 3U */
		
		/* Overflow check */
		if (colflags_size > (SIZE_MAX / (size_t)t1->flags_stride)) {
			/* FIXME event manager error callback */
			return OPJ_FALSE;
		}
		colflags_size *= (size_t)t1->flags_stride;
		
		if(colflags_size > (size_t)t1->colflags_size){
			/* Overflow check */
			if ((size_t)colflags_size > (SIZE_MAX / sizeof(opj_colflag_t))) {
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
			opj_aligned_free(t1->colflags);
			t1->colflags = (opj_colflag_t*) opj_aligned_malloc(colflags_size * sizeof(opj_colflag_t));
			if(!t1->colflags){
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
#if SIZE_MAX > 0xFFFFFFFFU /* UINT32_MAX */
			/* TODO remove this if t1->colflags_size type changes to size_t */
			/* Overflow check */
			if (colflags_size > (size_t)0xFFFFFFFFU /* UINT32_MAX */) {
				/* FIXME event manager error callback */
				return OPJ_FALSE;
			}
#endif
			t1->colflags_size = (OPJ_UINT32)colflags_size;
		}
		memset(t1->colflags, 0, colflags_size * sizeof(opj_colflag_t));
	}

	t1->w = w;
	t1->h = h;

	return OPJ_TRUE;
}

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

/* ----------------------------------------------------------------------- */
/**
 * Creates a new Tier 1 handle
 * and initializes the look-up tables of the Tier-1 coder/decoder
 * @return a new T1 handle if successful, returns NULL otherwise
*/
opj_t1_t* opj_t1_create(OPJ_BOOL isEncoder)
{
	opj_t1_t *l_t1 = 00;

	l_t1 = (opj_t1_t*) opj_calloc(1,sizeof(opj_t1_t));
	if (!l_t1) {
		return 00;
	}

	/* create MQC and RAW handles */
	l_t1->mqc = opj_mqc_create();
	if (! l_t1->mqc) {
		opj_t1_destroy(l_t1);
		return 00;
	}

	l_t1->raw = opj_raw_create();
	if (! l_t1->raw) {
		opj_t1_destroy(l_t1);
		return 00;
	}
	l_t1->encoder = isEncoder;

	return l_t1;
}


/**
 * Destroys a previously created T1 handle
 *
 * @param p_t1 Tier 1 handle to destroy
*/
void opj_t1_destroy(opj_t1_t *p_t1)
{
	if (! p_t1) {
		return;
	}

	/* destroy MQC and RAW handles */
	opj_mqc_destroy(p_t1->mqc);
	p_t1->mqc = 00;
	opj_raw_destroy(p_t1->raw);
	p_t1->raw = 00;
	
	/* encoder uses tile buffer, so no need to free */
	if (!p_t1->encoder && p_t1->data) {
		opj_aligned_free(p_t1->data);
		p_t1->data = 00;
	}

	if (p_t1->flags) {
		opj_aligned_free(p_t1->flags);
		p_t1->flags = 00;
	}

	if (p_t1->colflags) {
		opj_aligned_free(p_t1->colflags);
		p_t1->colflags = 00;
	}
	opj_free(p_t1);
}

typedef struct
{
    OPJ_UINT32 resno;
    opj_tcd_cblk_dec_t* cblk;
    opj_tcd_band_t* band;
    opj_tcd_tilecomp_t* tilec;
    opj_tccp_t* tccp;
    volatile OPJ_BOOL* pret;
} opj_t1_cblk_decode_processing_job_t;

static void opj_t1_destroy_wrapper(void* t1)
{
    opj_t1_destroy( (opj_t1_t*) t1 );
}

static void opj_t1_clbl_decode_processor(void* user_data, opj_tls_t* tls)
{
    opj_tcd_cblk_dec_t* cblk;
    opj_tcd_band_t* band;
    opj_tcd_tilecomp_t* tilec;
    opj_tccp_t* tccp;
    OPJ_INT32* OPJ_RESTRICT datap;
    OPJ_UINT32 cblk_w, cblk_h;
    OPJ_INT32 x, y;
    OPJ_UINT32 i, j;
    opj_t1_cblk_decode_processing_job_t* job;
    opj_t1_t* t1;
    OPJ_UINT32 resno;
    OPJ_UINT32 tile_w;

    job = (opj_t1_cblk_decode_processing_job_t*) user_data;
    resno = job->resno;
    cblk = job->cblk;
    band = job->band;
    tilec = job->tilec;
    tccp = job->tccp;
    tile_w = (OPJ_UINT32)(tilec->x1 - tilec->x0);

    if( !*(job->pret) )
    {
        opj_free(job);
        return;
    }

    t1 = (opj_t1_t*) opj_tls_get(tls, OPJ_TLS_KEY_T1);
    if( t1 == NULL )
    {
        t1 = opj_t1_create( OPJ_FALSE );
        opj_tls_set( tls, OPJ_TLS_KEY_T1, t1, opj_t1_destroy_wrapper );
    }

    if (OPJ_FALSE == opj_t1_decode_cblk(
                            t1,
                            cblk,
                            band->bandno,
                            (OPJ_UINT32)tccp->roishift,
                            tccp->cblksty)) {
            *(job->pret) = OPJ_FALSE;
            opj_free(job);
            return;
    }

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

    datap=t1->data;
    cblk_w = t1->w;
    cblk_h = t1->h;

    if (tccp->roishift) {
        OPJ_INT32 thresh = 1 << tccp->roishift;
        for (j = 0; j < cblk_h; ++j) {
            for (i = 0; i < cblk_w; ++i) {
                OPJ_INT32 val = datap[(j * cblk_w) + i];
                OPJ_INT32 mag = abs(val);
                if (mag >= thresh) {
                    mag >>= tccp->roishift;
                    datap[(j * cblk_w) + i] = val < 0 ? -mag : mag;
                }
            }
        }
    }
    if (tccp->qmfbid == 1) {
        OPJ_INT32* OPJ_RESTRICT tiledp = &tilec->data[(OPJ_UINT32)y * tile_w + (OPJ_UINT32)x];
        for (j = 0; j < cblk_h; ++j) {
            i = 0;
            for (; i < (cblk_w & ~(OPJ_UINT32)3U); i += 4U) {
                OPJ_INT32 tmp0 = datap[(j * cblk_w) + i + 0U];
                OPJ_INT32 tmp1 = datap[(j * cblk_w) + i + 1U];
                OPJ_INT32 tmp2 = datap[(j * cblk_w) + i + 2U];
                OPJ_INT32 tmp3 = datap[(j * cblk_w) + i + 3U];
                ((OPJ_INT32*)tiledp)[(j * tile_w) + i + 0U] = tmp0 / 2;
                ((OPJ_INT32*)tiledp)[(j * tile_w) + i + 1U] = tmp1 / 2;
                ((OPJ_INT32*)tiledp)[(j * tile_w) + i + 2U] = tmp2 / 2;
                ((OPJ_INT32*)tiledp)[(j * tile_w) + i + 3U] = tmp3 / 2;
            }
            for (; i < cblk_w; ++i) {
                OPJ_INT32 tmp = datap[(j * cblk_w) + i];
                ((OPJ_INT32*)tiledp)[(j * tile_w) + i] = tmp / 2;
            }
        }
    } else {        /* if (tccp->qmfbid == 0) */
        OPJ_FLOAT32* OPJ_RESTRICT tiledp = (OPJ_FLOAT32*) &tilec->data[(OPJ_UINT32)y * tile_w + (OPJ_UINT32)x];
        for (j = 0; j < cblk_h; ++j) {
            OPJ_FLOAT32* OPJ_RESTRICT tiledp2 = tiledp;
            for (i = 0; i < cblk_w; ++i) {
                OPJ_FLOAT32 tmp = (OPJ_FLOAT32)*datap * band->stepsize;
                *tiledp2 = tmp;
                datap++;
                tiledp2++;
            }
            tiledp += tile_w;
        }
    }

    opj_free(job);
}


void opj_t1_decode_cblks( opj_thread_pool_t* tp,
                          volatile OPJ_BOOL* pret,
                          opj_tcd_tilecomp_t* tilec,
                          opj_tccp_t* tccp
                         )
{
	OPJ_UINT32 resno, bandno, precno, cblkno;

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

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

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

				for (cblkno = 0; cblkno < precinct->cw * precinct->ch; ++cblkno) {
					opj_tcd_cblk_dec_t* cblk = &precinct->cblks.dec[cblkno];
                    opj_t1_cblk_decode_processing_job_t* job;

                    job = (opj_t1_cblk_decode_processing_job_t*) opj_calloc(1, sizeof(opj_t1_cblk_decode_processing_job_t));
                    if( !job )
                    {
                        *pret = OPJ_FALSE;
                        return;
                    }
                    job->resno = resno;
                    job->cblk = cblk;
                    job->band = band;
                    job->tilec = tilec;
                    job->tccp = tccp;
                    job->pret = pret;
                    opj_thread_pool_submit_job( tp, opj_t1_clbl_decode_processor, job );
                    if( !(*pret) )
                        return;
				} /* cblkno */
			} /* precno */
		} /* bandno */
	} /* resno */

    return;
}


static OPJ_BOOL opj_t1_decode_cblk(opj_t1_t *t1,
                            opj_tcd_cblk_dec_t* cblk,
                            OPJ_UINT32 orient,
                            OPJ_UINT32 roishift,
                            OPJ_UINT32 cblksty)
{
	opj_raw_t *raw = t1->raw;	/* RAW component */
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	
	OPJ_INT32 bpno_plus_one;
	OPJ_UINT32 passtype;
	OPJ_UINT32 segno, passno;
	OPJ_BYTE type = T1_TYPE_MQ; /* BYPASS mode */

	mqc->lut_ctxno_zc_orient = lut_ctxno_zc + orient * 256;

	if(!opj_t1_allocate_buffers(
				t1,
				(OPJ_UINT32)(cblk->x1 - cblk->x0),
				(OPJ_UINT32)(cblk->y1 - cblk->y0)))
	{
		return OPJ_FALSE;
	}

	bpno_plus_one = (OPJ_INT32)(roishift + cblk->numbps);
	passtype = 2;

	opj_mqc_resetstates(mqc);
	opj_mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
	opj_mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
	opj_mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);

	for (segno = 0; segno < cblk->real_num_segs; ++segno) {
		opj_tcd_seg_t *seg = &cblk->segs[segno];

		/* BYPASS mode */
		type = ((bpno_plus_one <= ((OPJ_INT32) (cblk->numbps)) - 4) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
		/* FIXME: slviewer gets here with a null pointer. Why? Partially downloaded and/or corrupt textures? */
		if(seg->data == 00){
			continue;
		}
		if (type == T1_TYPE_RAW) {
			opj_raw_init_dec(raw, (*seg->data) + seg->dataindex, seg->len);
		} else {
            if (OPJ_FALSE == opj_mqc_init_dec(mqc, (*seg->data) + seg->dataindex, seg->len)) {
                    return OPJ_FALSE;
            }
		}

		if( t1->w == 64 && t1->h == 64 )
		{
		  for (passno = 0; (passno < seg->real_num_passes) && (bpno_plus_one >= 1); ++passno) {
			  switch (passtype) {
				  case 0:
					  if (type == T1_TYPE_RAW) {
						  opj_t1_dec_sigpass_raw(t1, bpno_plus_one, (OPJ_INT32)cblksty);
					  } else {
						  if (cblksty & J2K_CCP_CBLKSTY_VSC) {
							  opj_t1_dec_sigpass_mqc_vsc(t1, bpno_plus_one);
						  } else {
							  opj_t1_dec_sigpass_mqc_64x64(t1, bpno_plus_one);
						  }
					  }
					  break;
				  case 1:
					  if (type == T1_TYPE_RAW) {
							  opj_t1_dec_refpass_raw(t1, bpno_plus_one);
					  } else {
						  if (cblksty & J2K_CCP_CBLKSTY_VSC) {
							  opj_t1_dec_refpass_mqc_vsc(t1, bpno_plus_one);
						  } else {
							  opj_t1_dec_refpass_mqc_64x64(t1, bpno_plus_one);
						  }
					  }
					  break;
				  case 2:
					  opj_t1_dec_clnpass_64x64(t1, bpno_plus_one, (OPJ_INT32)cblksty);
					  break;
			  }

			  if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) {
				  opj_mqc_resetstates(mqc);
				  opj_mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
				  opj_mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
				  opj_mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
			  }
			  if (++passtype == 3) {
				  passtype = 0;
				  bpno_plus_one--;
			  }
		  }
		}
		else
		{
		  for (passno = 0; (passno < seg->real_num_passes) && (bpno_plus_one >= 1); ++passno) {
			  switch (passtype) {
				  case 0:
					  if (type == T1_TYPE_RAW) {
						  opj_t1_dec_sigpass_raw(t1, bpno_plus_one, (OPJ_INT32)cblksty);
					  } else {
						  if (cblksty & J2K_CCP_CBLKSTY_VSC) {
							  opj_t1_dec_sigpass_mqc_vsc(t1, bpno_plus_one);
						  } else {
							  opj_t1_dec_sigpass_mqc_generic(t1, bpno_plus_one);
						  }
					  }
					  break;
				  case 1:
					  if (type == T1_TYPE_RAW) {
							  opj_t1_dec_refpass_raw(t1, bpno_plus_one);
					  } else {
						  if (cblksty & J2K_CCP_CBLKSTY_VSC) {
							  opj_t1_dec_refpass_mqc_vsc(t1, bpno_plus_one);
						  } else {
							  opj_t1_dec_refpass_mqc_generic(t1, bpno_plus_one);
						  }
					  }
					  break;
				  case 2:
					  opj_t1_dec_clnpass_generic(t1, bpno_plus_one, (OPJ_INT32)cblksty);
					  break;
			  }

			  if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) {
				  opj_mqc_resetstates(mqc);
				  opj_mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
				  opj_mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
				  opj_mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
			  }
			  if (++passtype == 3) {
				  passtype = 0;
				  bpno_plus_one--;
			  }
		  }
		}
	}
    return OPJ_TRUE;
}




OPJ_BOOL opj_t1_encode_cblks(   opj_t1_t *t1,
                                opj_tcd_tile_t *tile,
                                opj_tcp_t *tcp,
                                const OPJ_FLOAT64 * mct_norms,
                                OPJ_UINT32 mct_numcomps
                                )
{
	OPJ_UINT32 compno, resno, bandno, precno, cblkno;

	tile->distotile = 0;		/* fixed_quality */

	for (compno = 0; compno < tile->numcomps; ++compno) {
		opj_tcd_tilecomp_t* tilec = &tile->comps[compno];
		opj_tccp_t* tccp = &tcp->tccps[compno];
		OPJ_UINT32 tile_w = (OPJ_UINT32)(tilec->x1 - tilec->x0);

		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* OPJ_RESTRICT band = &res->bands[bandno];
                OPJ_INT32 bandconst = 8192 * 8192 / ((OPJ_INT32) floor(band->stepsize * 8192));

				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_enc_t* cblk = &prc->cblks.enc[cblkno];
						OPJ_INT32* OPJ_RESTRICT tiledp;
						OPJ_UINT32 cblk_w;
						OPJ_UINT32 cblk_h;
						OPJ_UINT32 i, j, tileIndex=0, tileLineAdvance;

						OPJ_INT32 x = cblk->x0 - band->x0;
						OPJ_INT32 y = cblk->y0 - band->y0;
						if (band->bandno & 1) {
							opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
							x += pres->x1 - pres->x0;
						}
						if (band->bandno & 2) {
							opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
							y += pres->y1 - pres->y0;
						}

						if(!opj_t1_allocate_buffers(
									t1,
									(OPJ_UINT32)(cblk->x1 - cblk->x0),
									(OPJ_UINT32)(cblk->y1 - cblk->y0)))
						{
							return OPJ_FALSE;
						}

						cblk_w = t1->w;
						cblk_h = t1->h;
						tileLineAdvance = tile_w - cblk_w;

						tiledp=&tilec->data[(OPJ_UINT32)y * tile_w + (OPJ_UINT32)x];
						t1->data = tiledp;
						t1->data_stride = tile_w;
						if (tccp->qmfbid == 1) {
							for (j = 0; j < cblk_h; ++j) {
								for (i = 0; i < cblk_w; ++i) {
									tiledp[tileIndex] *= (1 << T1_NMSEDEC_FRACBITS);
									tileIndex++;
								}
								tileIndex += tileLineAdvance;
							}
						} else {		/* if (tccp->qmfbid == 0) */
							for (j = 0; j < cblk_h; ++j) {
								for (i = 0; i < cblk_w; ++i) {
									OPJ_INT32 tmp = tiledp[tileIndex];
									tiledp[tileIndex] =
										opj_int_fix_mul_t1(
										tmp,
										bandconst);
									tileIndex++;
								}
								tileIndex += tileLineAdvance;
							}
						}

						opj_t1_encode_cblk(
								t1,
								cblk,
								band->bandno,
								compno,
								tilec->numresolutions - 1 - resno,
								tccp->qmfbid,
								band->stepsize,
								tccp->cblksty,
								tile->numcomps,
								tile,
								mct_norms,
								mct_numcomps);

					} /* cblkno */
				} /* precno */
			} /* bandno */
		} /* resno  */
	} /* compno  */
	return OPJ_TRUE;
}

/** mod fixed_quality */
static void opj_t1_encode_cblk(opj_t1_t *t1,
                        opj_tcd_cblk_enc_t* cblk,
                        OPJ_UINT32 orient,
                        OPJ_UINT32 compno,
                        OPJ_UINT32 level,
                        OPJ_UINT32 qmfbid,
                        OPJ_FLOAT64 stepsize,
                        OPJ_UINT32 cblksty,
                        OPJ_UINT32 numcomps,
                        opj_tcd_tile_t * tile,
                        const OPJ_FLOAT64 * mct_norms,
                        OPJ_UINT32 mct_numcomps)
{
	OPJ_FLOAT64 cumwmsedec = 0.0;

	opj_mqc_t *mqc = t1->mqc;	/* MQC component */

	OPJ_UINT32 passno;
	OPJ_INT32 bpno;
	OPJ_UINT32 passtype;
	OPJ_INT32 nmsedec = 0;
	OPJ_INT32 max;
	OPJ_UINT32 i, j;
	OPJ_BYTE type = T1_TYPE_MQ;
	OPJ_FLOAT64 tempwmsedec;

	mqc->lut_ctxno_zc_orient = lut_ctxno_zc + orient * 256;

	max = 0;
	for (i = 0; i < t1->w; ++i) {
		for (j = 0; j < t1->h; ++j) {
			OPJ_INT32 tmp = abs(t1->data[i + j*t1->data_stride]);
			max = opj_int_max(max, tmp);
		}
	}

	cblk->numbps = max ? (OPJ_UINT32)((opj_int_floorlog2(max) + 1) - T1_NMSEDEC_FRACBITS) : 0;

	bpno = (OPJ_INT32)(cblk->numbps - 1);
	passtype = 2;

	opj_mqc_resetstates(mqc);
	opj_mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
	opj_mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
	opj_mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
	opj_mqc_init_enc(mqc, cblk->data);

	for (passno = 0; bpno >= 0; ++passno) {
		opj_tcd_pass_t *pass = &cblk->passes[passno];
		OPJ_UINT32 correction = 3;
		type = ((bpno < ((OPJ_INT32) (cblk->numbps) - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;

		switch (passtype) {
			case 0:
				opj_t1_enc_sigpass(t1, bpno, &nmsedec, type, cblksty);
				break;
			case 1:
				opj_t1_enc_refpass(t1, bpno, &nmsedec, type, cblksty);
				break;
			case 2:
				opj_t1_enc_clnpass(t1, bpno, &nmsedec, cblksty);
				/* code switch SEGMARK (i.e. SEGSYM) */
				if (cblksty & J2K_CCP_CBLKSTY_SEGSYM)
					opj_mqc_segmark_enc(mqc);
				break;
		}

		/* fixed_quality */
		tempwmsedec = opj_t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps,mct_norms, mct_numcomps) ;
		cumwmsedec += tempwmsedec;
		tile->distotile += tempwmsedec;

		/* Code switch "RESTART" (i.e. TERMALL) */
		if ((cblksty & J2K_CCP_CBLKSTY_TERMALL)	&& !((passtype == 2) && (bpno - 1 < 0))) {
			if (type == T1_TYPE_RAW) {
				opj_mqc_flush(mqc);
				correction = 1;
				/* correction = mqc_bypass_flush_enc(); */
			} else {			/* correction = mqc_restart_enc(); */
				opj_mqc_flush(mqc);
				correction = 1;
			}
			pass->term = 1;
		} else {
			if (((bpno < ((OPJ_INT32) (cblk->numbps) - 4) && (passtype > 0))
				|| ((bpno == ((OPJ_INT32)cblk->numbps - 4)) && (passtype == 2))) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) {
				if (type == T1_TYPE_RAW) {
					opj_mqc_flush(mqc);
					correction = 1;
					/* correction = mqc_bypass_flush_enc(); */
				} else {		/* correction = mqc_restart_enc(); */
					opj_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 < ((OPJ_INT32) (cblk->numbps) - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
			if (type == T1_TYPE_RAW)
				opj_mqc_bypass_init_enc(mqc);
			else
				opj_mqc_restart_init_enc(mqc);
		}

		pass->distortiondec = cumwmsedec;
		pass->rate = opj_mqc_numbytes(mqc) + correction;	/* FIXME */

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

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

	cblk->totalpasses = passno;

	for (passno = 0; passno<cblk->totalpasses; passno++) {
		opj_tcd_pass_t *pass = &cblk->passes[passno];
		if (pass->rate > opj_mqc_numbytes(mqc))
			pass->rate = opj_mqc_numbytes(mqc);
		/*Preventing generation of FF as last data byte of a pass*/
		if((pass->rate>1) && (cblk->data[pass->rate - 1] == 0xFF)){
			pass->rate--;
		}
		pass->len = pass->rate - (passno == 0 ? 0 : cblk->passes[passno - 1].rate);
	}
}

#if 0
static void opj_t1_dec_refpass_step(   opj_t1_t *t1,
                                opj_flag_t *flagsp,
                                OPJ_INT32 *datap,
                                OPJ_INT32 poshalf,
                                OPJ_INT32 neghalf,
                                OPJ_BYTE type,
                                OPJ_UINT32 vsc)
{
	OPJ_INT32  t;
	OPJ_UINT32 v,flag;

	opj_mqc_t *mqc = t1->mqc;	/* MQC component */
	opj_raw_t *raw = t1->raw;	/* RAW component */

	flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
	if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
		opj_mqc_setcurctx(mqc, opj_t1_getctxno_mag(flag));	/* ESSAI */
		if (type == T1_TYPE_RAW) {
			v = opj_raw_decode(raw);
		} else {
			v = opj_mqc_decode(mqc);
		}
		t = v ? poshalf : neghalf;
		*datap += *datap < 0 ? -t : t;
		*flagsp |= T1_REFINE;
	}
}				/* VSC and  BYPASS by Antonin  */
#endif



#if 0
static void opj_t1_dec_sigpass_step(   opj_t1_t *t1,
                                opj_flag_t *flagsp,
                                OPJ_INT32 *datap,
                                OPJ_UINT32 orient,
                                OPJ_INT32 oneplushalf,
                                OPJ_BYTE type,
                                OPJ_UINT32 vsc)
{
	OPJ_UINT32 v, flag;

	opj_raw_t *raw = t1->raw;	/* RAW component */
	opj_mqc_t *mqc = t1->mqc;	/* MQC component */

	flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
	if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
		if (type == T1_TYPE_RAW) {
			if (opj_raw_decode(raw)) {
				v = opj_raw_decode(raw);	/* ESSAI */
				*datap = v ? -oneplushalf : oneplushalf;
				opj_t1_updateflags(flagsp, v, t1->flags_stride);
			}
		} else {
			opj_mqc_setcurctx(mqc, opj_t1_getctxno_zc(flag, orient));
			if (opj_mqc_decode(mqc)) {
				opj_mqc_setcurctx(mqc, opj_t1_getctxno_sc(flag));
				v = opj_mqc_decode(mqc) ^ opj_t1_getspb(flag);
				*datap = v ? -oneplushalf : oneplushalf;
				opj_t1_updateflags(flagsp, v, t1->flags_stride);
			}
		}
		*flagsp |= T1_VISIT;
	}
}				/* VSC and  BYPASS by Antonin */
#endif