WIP: update t1, t2, tcd to use same strut as in V2
[openjpeg.git] / libopenjpeg / t1.c
index 2fbdd54a52a2d32c514e7d0aec648660849ff947..2fb19776a88003b64be5f18f665e47c782277873 100644 (file)
@@ -5,6 +5,7 @@
  * Copyright (c) 2002-2003, Yannick Verschueren
  * Copyright (c) 2003-2007, Francois-Olivier Devaux and 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
@@ -30,6 +31,7 @@
  */
 
 #include "opj_includes.h"
+#include "t1_luts.h"
 
 /** @defgroup T1 T1 - Implementation of the tier-1 coding */
 /*@{*/
 /** @name Local static functions */
 /*@{*/
 
-static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient);
-static int t1_getctxno_sc(opj_t1_t *t1, int f);
-static int t1_getctxno_mag(opj_t1_t *t1, int f);
-static int t1_getspb(opj_t1_t *t1, int f);
-static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos);
-static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos);
-static void t1_updateflags(int *fp, int s);
+static INLINE char t1_getctxno_zc(int f, int orient);
+static char t1_getctxno_sc(int f);
+static INLINE int t1_getctxno_mag(int f);
+static char t1_getspb(int f);
+static short t1_getnmsedec_sig(int x, int bitpos);
+static short t1_getnmsedec_ref(int x, int bitpos);
+static void t1_updateflags(flag_t *flagsp, int s, int stride);
 /**
 Encode significant pass
 */
-static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc);
+static void t1_enc_sigpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int bpno,
+               int one,
+               int *nmsedec,
+               char type,
+               int vsc);
+
+/**
+Decode significant pass
+*/
+static void t1_dec_sigpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               OPJ_INT32 *datap,
+               OPJ_UINT32 orient,
+               OPJ_INT32 oneplushalf,
+               OPJ_BYTE type,
+               OPJ_UINT32 vsc);
 /**
 Decode significant pass
 */
-static void t1_dec_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc);
+static INLINE void t1_dec_sigpass_step_raw(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf,
+               int vsc);
+static INLINE void t1_dec_sigpass_step_mqc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf);
+static INLINE void t1_dec_sigpass_step_mqc_vsc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf,
+               int vsc);
 /**
 Encode significant pass
 */
-static void t1_enc_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, char type, int cblksty);
+static void t1_enc_sigpass(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int *nmsedec,
+               char type,
+               int cblksty);
+
+/**
+Decode significant pass
+*/
+static void t1_dec_sigpass(
+               opj_t1_t *t1,
+               OPJ_INT32 bpno,
+               OPJ_UINT32 orient,
+               OPJ_BYTE type,
+               OPJ_UINT32 cblksty);
+
 /**
 Decode significant pass
 */
-static void t1_dec_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, char type, int cblksty);
+static void t1_dec_sigpass_raw(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int cblksty);
+static void t1_dec_sigpass_mqc(
+               opj_t1_t *t1,
+               int bpno,
+               int orient);
+static void t1_dec_sigpass_mqc_vsc(
+               opj_t1_t *t1,
+               int bpno,
+               int orient);
 /**
 Encode refinement pass
 */
-static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc);
+static void t1_enc_refpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int bpno,
+               int one,
+               int *nmsedec,
+               char type,
+               int vsc);
 /**
 Decode refinement pass
 */
-static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc);
+static void INLINE t1_dec_refpass_step_raw(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int poshalf,
+               int neghalf,
+               int vsc);
+static void INLINE t1_dec_refpass_step_mqc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int poshalf,
+               int neghalf);
+static void INLINE t1_dec_refpass_step_mqc_vsc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int poshalf,
+               int neghalf,
+               int vsc);
+
 /**
 Encode refinement pass
 */
-static void t1_enc_refpass(opj_t1_t *t1, int w, int h, int bpno, int *nmsedec, char type, int cblksty);
+static void t1_enc_refpass(
+               opj_t1_t *t1,
+               int bpno,
+               int *nmsedec,
+               char type,
+               int cblksty);
+
+/**
+Decode refinement pass
+*/
+static void t1_dec_refpass(
+               opj_t1_t *t1,
+               OPJ_INT32 bpno,
+               OPJ_BYTE type,
+               OPJ_UINT32 cblksty);
+
+/**
+Decode refinement pass
+*/
+static void t1_dec_refpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               OPJ_INT32 *datap,
+               OPJ_INT32 poshalf,
+               OPJ_INT32 neghalf,
+               OPJ_BYTE type,
+               OPJ_UINT32 vsc);
+
 /**
 Decode refinement pass
 */
-static void t1_dec_refpass(opj_t1_t *t1, int w, int h, int bpno, char type, int cblksty);
+static void t1_dec_refpass_raw(
+               opj_t1_t *t1,
+               int bpno,
+               int cblksty);
+static void t1_dec_refpass_mqc(
+               opj_t1_t *t1,
+               int bpno);
+static void t1_dec_refpass_mqc_vsc(
+               opj_t1_t *t1,
+               int bpno);
 /**
 Encode clean-up pass
 */
-static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc);
+static void t1_enc_clnpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int bpno,
+               int one,
+               int *nmsedec,
+               int partial,
+               int vsc);
 /**
 Decode clean-up pass
 */
-static void t1_dec_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc);
+static void t1_dec_clnpass_step_partial(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf);
+static void t1_dec_clnpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf);
+static void t1_dec_clnpass_step_vsc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf,
+               int partial,
+               int vsc);
 /**
 Encode clean-up pass
 */
-static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, int cblksty);
+static void t1_enc_clnpass(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int *nmsedec,
+               int cblksty);
 /**
 Decode clean-up pass
 */
-static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int cblksty);
-static double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps);
+static void t1_dec_clnpass(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int cblksty);
+static double t1_getwmsedec(
+               int nmsedec,
+               int compno,
+               int level,
+               int orient,
+               int bpno,
+               int qmfbid,
+               double stepsize,
+               int numcomps,
+               int mct);
 /**
 Encode 1 code-block
 @param t1 T1 handle
@@ -104,9 +285,21 @@ Encode 1 code-block
 @param stepsize
 @param cblksty Code-block style
 @param numcomps
+@param mct
 @param tile
 */
-static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile);
+static void t1_encode_cblk(
+               opj_t1_t *t1,
+               opj_tcd_cblk_enc_t* cblk,
+               int orient,
+               int compno,
+               int level,
+               int qmfbid,
+               double stepsize,
+               int cblksty,
+               int numcomps,
+               int mct,
+               opj_tcd_tile_t * tile);
 /**
 Decode 1 code-block
 @param t1 T1 handle
@@ -115,16 +308,12 @@ Decode 1 code-block
 @param roishift Region of interest shifting value
 @param cblksty Code-block style
 */
-static void t1_decode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int roishift, int cblksty);
-static int t1_init_ctxno_zc(int f, int orient);
-static int t1_init_ctxno_sc(int f);
-static int t1_init_ctxno_mag(int f);
-static int t1_init_spb(int f);
-/**
-Initialize the look-up tables of the Tier-1 coder/decoder
-@param t1 T1 handle
-*/
-static void t1_init_luts(opj_t1_t *t1);
+static void t1_decode_cblk(
+               opj_t1_t *t1,
+               opj_tcd_cblk_dec_t* cblk,
+               int orient,
+               int roishift,
+               int cblksty);
 
 /*@}*/
 
@@ -132,295 +321,654 @@ static void t1_init_luts(opj_t1_t *t1);
 
 /* ----------------------------------------------------------------------- */
 
-static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient) {
-       return t1->lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
+static char t1_getctxno_zc(int f, int orient) {
+       return lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
 }
 
-static int t1_getctxno_sc(opj_t1_t *t1, int f) {
-       return t1->lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
+static char t1_getctxno_sc(int f) {
+       return lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
 }
 
-static int t1_getctxno_mag(opj_t1_t *t1, int f) {
-       return t1->lut_ctxno_mag[(f & T1_SIG_OTH) | (((f & T1_REFINE) != 0) << 11)];
+static int t1_getctxno_mag(int f) {
+       int tmp1 = (f & T1_SIG_OTH) ? T1_CTXNO_MAG + 1 : T1_CTXNO_MAG;
+       int tmp2 = (f & T1_REFINE) ? T1_CTXNO_MAG + 2 : tmp1;
+       return (tmp2);
 }
 
-static int t1_getspb(opj_t1_t *t1, int f) {
-       return t1->lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
+static char t1_getspb(int f) {
+       return lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
 }
 
-static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos) {
+static short 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)];
+               return lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
        }
        
-       return t1->lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
+       return lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
 }
 
-static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos) {
+static short 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)];
+               return lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
        }
 
-    return t1->lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
+    return lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
 }
 
-static void t1_updateflags(int *fp, int s) {
-       int *np = fp - (T1_MAXCBLKW + 2);
-       int *sp = fp + (T1_MAXCBLKW + 2);
+static void t1_updateflags(flag_t *flagsp, int s, int stride) {
+       flag_t *np = flagsp - stride;
+       flag_t *sp = flagsp + stride;
+
+       static const flag_t mod[] = {
+               T1_SIG_S, T1_SIG_S|T1_SGN_S,
+               T1_SIG_E, T1_SIG_E|T1_SGN_E,
+               T1_SIG_W, T1_SIG_W|T1_SGN_W,
+               T1_SIG_N, T1_SIG_N|T1_SGN_N
+       };
+
        np[-1] |= T1_SIG_SE;
-       np[1] |= T1_SIG_SW;
+       np[0]  |= mod[s];
+       np[1]  |= T1_SIG_SW;
+
+       flagsp[-1] |= mod[s+2];
+       flagsp[0]  |= T1_SIG;
+       flagsp[1]  |= mod[s+4];
+
        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;
-       }
+       sp[0]  |= mod[s+6];
+       sp[1]  |= T1_SIG_NW;
 }
 
-static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc) {
+static void t1_enc_sigpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int bpno,
+               int one,
+               int *nmsedec,
+               char type,
+               int vsc)
+{
        int v, flag;
        
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
        
-       flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+       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))) {
-               v = int_abs(*dp) & one ? 1 : 0;
+               v = int_abs(*datap) & one ? 1 : 0;
+               mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));       /* ESSAI */
                if (type == T1_TYPE_RAW) {      /* BYPASS/LAZY MODE */
-                       mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));   /* ESSAI */
                        mqc_bypass_enc(mqc, v);
                } else {
-                       mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
                        mqc_encode(mqc, v);
                }
                if (v) {
-                       v = *dp < 0 ? 1 : 0;
-                       *nmsedec +=     t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
+                       v = *datap < 0 ? 1 : 0;
+                       *nmsedec +=     t1_getnmsedec_sig(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS);
+                       mqc_setcurctx(mqc, t1_getctxno_sc(flag));       /* ESSAI */
                        if (type == T1_TYPE_RAW) {      /* BYPASS/LAZY MODE */
-                               mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));   /* ESSAI */
                                mqc_bypass_enc(mqc, v);
                        } else {
-                               mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
-                               mqc_encode(mqc, v ^ t1_getspb(t1, flag));
+                               mqc_encode(mqc, v ^ t1_getspb(flag));
                        }
-                       t1_updateflags(fp, v);
-                       *fp |= T1_SIG;
+                       t1_updateflags(flagsp, v, t1->flags_stride);
                }
-               *fp |= T1_VISIT;
+               *flagsp |= T1_VISIT;
        }
 }
 
-static void t1_dec_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc) {
+static INLINE void t1_dec_sigpass_step_raw(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf,
+               int vsc)
+{
        int v, flag;
-       
        opj_raw_t *raw = t1->raw;       /* RAW component */
-       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
        
-       flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+       OPJ_ARG_NOT_USED(orient);
+       
+       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 (raw_decode(raw)) {
                                v = raw_decode(raw);    /* ESSAI */
-                               *dp = v ? -oneplushalf : oneplushalf;
-                               t1_updateflags(fp, v);
-                               *fp |= T1_SIG;
+                               *datap = v ? -oneplushalf : oneplushalf;
+                               t1_updateflags(flagsp, v, t1->flags_stride);
                        }
-               } else {
-                       mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
+               *flagsp |= T1_VISIT;
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+static INLINE void t1_dec_sigpass_step_mqc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf)
+{
+       int v, flag;
+       
+       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
+       
+       flag = *flagsp;
+       if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
+                       mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
                        if (mqc_decode(mqc)) {
-                               mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
-                               v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
-                               *dp = v ? -oneplushalf : oneplushalf;
-                               t1_updateflags(fp, v);
-                               *fp |= T1_SIG;
+                               mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+                               v = mqc_decode(mqc) ^ t1_getspb(flag);
+                               *datap = v ? -oneplushalf : oneplushalf;
+                               t1_updateflags(flagsp, v, t1->flags_stride);
                        }
+               *flagsp |= T1_VISIT;
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+static INLINE void t1_dec_sigpass_step_mqc_vsc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf,
+               int vsc)
+{
+       int 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) && !(flag & (T1_SIG | T1_VISIT))) {
+               mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
+               if (mqc_decode(mqc)) {
+                       mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+                       v = mqc_decode(mqc) ^ t1_getspb(flag);
+                       *datap = v ? -oneplushalf : oneplushalf;
+                       t1_updateflags(flagsp, v, t1->flags_stride);
                }
-               *fp |= T1_VISIT;
+               *flagsp |= T1_VISIT;
        }
 }                              /* VSC and  BYPASS by Antonin */
 
-static void t1_enc_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, char type, int cblksty) {
+static void t1_enc_sigpass(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int *nmsedec,
+               char type,
+               int cblksty)
+{
        int i, j, k, one, vsc;
        *nmsedec = 0;
        one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
-       for (k = 0; k < h; k += 4) {
-               for (i = 0; i < w; i++) {
-                       for (j = k; j < k + 4 && j < h; j++) {
-                               vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
-                               t1_enc_sigpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, bpno, one, nmsedec, type, vsc);
+       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;
+                               t1_enc_sigpass_step(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               orient,
+                                               bpno,
+                                               one,
+                                               nmsedec,
+                                               type,
+                                               vsc);
                        }
                }
        }
 }
 
-static void t1_dec_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, char type, int cblksty) {
+static void t1_dec_sigpass_raw(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int cblksty)
+{
+       int i, j, k, one, half, oneplushalf, vsc;
+       one = 1 << bpno;
+       half = one >> 1;
+       oneplushalf = one | half;
+       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;
+                               t1_dec_sigpass_step_raw(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               orient,
+                                               oneplushalf,
+                                               vsc);
+                       }
+               }
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+static void t1_dec_sigpass_mqc(
+               opj_t1_t *t1,
+               int bpno,
+               int orient)
+{
+       int i, j, k, one, half, oneplushalf;
+       int *data1 = t1->data;
+       flag_t *flags1 = &t1->flags[1];
+       one = 1 << bpno;
+       half = one >> 1;
+       oneplushalf = one | half;
+       for (k = 0; k < (t1->h & ~3); k += 4) {
+               for (i = 0; i < t1->w; ++i) {
+                       int *data2 = data1 + i;
+                       flag_t *flags2 = flags1 + i;
+                       flags2 += t1->flags_stride;
+                       t1_dec_sigpass_step_mqc(t1, flags2, data2, orient, oneplushalf);
+                       data2 += t1->w;
+                       flags2 += t1->flags_stride;
+                       t1_dec_sigpass_step_mqc(t1, flags2, data2, orient, oneplushalf);
+                       data2 += t1->w;
+                       flags2 += t1->flags_stride;
+                       t1_dec_sigpass_step_mqc(t1, flags2, data2, orient, oneplushalf);
+                       data2 += t1->w;
+                       flags2 += t1->flags_stride;
+                       t1_dec_sigpass_step_mqc(t1, flags2, data2, orient, oneplushalf);
+                       data2 += t1->w;
+               }
+               data1 += t1->w << 2;
+               flags1 += t1->flags_stride << 2;
+       }
+       for (i = 0; i < t1->w; ++i) {
+               int *data2 = data1 + i;
+               flag_t *flags2 = flags1 + i;
+               for (j = k; j < t1->h; ++j) {
+                       flags2 += t1->flags_stride;
+                       t1_dec_sigpass_step_mqc(t1, flags2, data2, orient, oneplushalf);
+                       data2 += t1->w;
+               }
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+static void t1_dec_sigpass_mqc_vsc(
+               opj_t1_t *t1,
+               int bpno,
+               int orient)
+{
        int i, j, k, one, half, oneplushalf, vsc;
        one = 1 << bpno;
        half = one >> 1;
        oneplushalf = one | half;
-       for (k = 0; k < h; k += 4) {
-               for (i = 0; i < w; i++) {
-                       for (j = k; j < k + 4 && j < h; j++) {
-                               vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
-                               t1_dec_sigpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, oneplushalf, type, vsc);
+       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 = (j == k + 3 || j == t1->h - 1) ? 1 : 0;
+                               t1_dec_sigpass_step_mqc_vsc(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               orient,
+                                               oneplushalf,
+                                               vsc);
                        }
                }
        }
 }                              /* VSC and  BYPASS by Antonin */
 
-static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc) {
+static void t1_enc_refpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int bpno,
+               int one,
+               int *nmsedec,
+               char type,
+               int vsc)
+{
        int v, flag;
        
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
        
-       flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+       flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
        if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
-               *nmsedec += t1_getnmsedec_ref(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
-               v = int_abs(*dp) & one ? 1 : 0;
+               *nmsedec += t1_getnmsedec_ref(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS);
+               v = int_abs(*datap) & one ? 1 : 0;
+               mqc_setcurctx(mqc, t1_getctxno_mag(flag));      /* ESSAI */
                if (type == T1_TYPE_RAW) {      /* BYPASS/LAZY MODE */
-                       mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));  /* ESSAI */
                        mqc_bypass_enc(mqc, v);
                } else {
-                       mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
                        mqc_encode(mqc, v);
                }
-               *fp |= T1_REFINE;
+               *flagsp |= T1_REFINE;
        }
 }
 
-static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc) {
+static INLINE void t1_dec_refpass_step_raw(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int poshalf,
+               int neghalf,
+               int vsc)
+{
        int v, t, flag;
        
-       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
        opj_raw_t *raw = t1->raw;       /* RAW component */
        
-       flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+       flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
        if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
-               if (type == T1_TYPE_RAW) {
-                       mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));  /* ESSAI */
                        v = raw_decode(raw);
-               } else {
-                       mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
+               t = v ? poshalf : neghalf;
+               *datap += *datap < 0 ? -t : t;
+               *flagsp |= T1_REFINE;
+       }
+}                              /* VSC and  BYPASS by Antonin  */
+
+static INLINE void t1_dec_refpass_step_mqc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int poshalf,
+               int neghalf)
+{
+       int v, t, flag;
+       
+       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
+       
+       flag = *flagsp;
+       if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
+               mqc_setcurctx(mqc, t1_getctxno_mag(flag));      /* ESSAI */
                        v = mqc_decode(mqc);
+               t = v ? poshalf : neghalf;
+               *datap += *datap < 0 ? -t : t;
+               *flagsp |= T1_REFINE;
                }
+}                              /* VSC and  BYPASS by Antonin  */
+
+static INLINE void t1_dec_refpass_step_mqc_vsc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int poshalf,
+               int neghalf,
+               int vsc)
+{
+       int v, t, 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 | T1_VISIT)) == T1_SIG) {
+               mqc_setcurctx(mqc, t1_getctxno_mag(flag));      /* ESSAI */
+               v = mqc_decode(mqc);
                t = v ? poshalf : neghalf;
-               *dp += *dp < 0 ? -t : t;
-               *fp |= T1_REFINE;
+               *datap += *datap < 0 ? -t : t;
+               *flagsp |= T1_REFINE;
        }
 }                              /* VSC and  BYPASS by Antonin  */
 
-static void t1_enc_refpass(opj_t1_t *t1, int w, int h, int bpno, int *nmsedec, char type, int cblksty) {
+static void t1_enc_refpass(
+               opj_t1_t *t1,
+               int bpno,
+               int *nmsedec,
+               char type,
+               int cblksty)
+{
        int i, j, k, one, vsc;
        *nmsedec = 0;
        one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
-       for (k = 0; k < h; k += 4) {
-               for (i = 0; i < w; i++) {
-                       for (j = k; j < k + 4 && j < h; j++) {
-                               vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
-                               t1_enc_refpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], bpno, one, nmsedec, type, vsc);
+       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;
+                               t1_enc_refpass_step(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               bpno,
+                                               one,
+                                               nmsedec,
+                                               type,
+                                               vsc);
                        }
                }
        }
 }
 
-static void t1_dec_refpass(opj_t1_t *t1, int w, int h, int bpno, char type, int cblksty) {
+static void t1_dec_refpass_raw(
+               opj_t1_t *t1,
+               int bpno,
+               int cblksty)
+{
        int i, j, k, one, poshalf, neghalf;
        int vsc;
        one = 1 << bpno;
        poshalf = one >> 1;
        neghalf = bpno > 0 ? -poshalf : -1;
-       for (k = 0; k < h; k += 4) {
-               for (i = 0; i < w; i++) {
-                       for (j = k; j < k + 4 && j < h; j++) {
-                               vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
-                               t1_dec_refpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], poshalf, neghalf, type, vsc);
+       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;
+                               t1_dec_refpass_step_raw(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               poshalf,
+                                               neghalf,
+                                               vsc);
                        }
                }
        }
 }                              /* VSC and  BYPASS by Antonin */
 
-static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc) {
+static void t1_dec_refpass_mqc(
+               opj_t1_t *t1,
+               int bpno)
+{
+       int i, j, k, one, poshalf, neghalf;
+       int *data1 = t1->data;
+       flag_t *flags1 = &t1->flags[1];
+       one = 1 << bpno;
+       poshalf = one >> 1;
+       neghalf = bpno > 0 ? -poshalf : -1;
+       for (k = 0; k < (t1->h & ~3); k += 4) {
+               for (i = 0; i < t1->w; ++i) {
+                       int *data2 = data1 + i;
+                       flag_t *flags2 = flags1 + i;
+                       flags2 += t1->flags_stride;
+                       t1_dec_refpass_step_mqc(t1, flags2, data2, poshalf, neghalf);
+                       data2 += t1->w;
+                       flags2 += t1->flags_stride;
+                       t1_dec_refpass_step_mqc(t1, flags2, data2, poshalf, neghalf);
+                       data2 += t1->w;
+                       flags2 += t1->flags_stride;
+                       t1_dec_refpass_step_mqc(t1, flags2, data2, poshalf, neghalf);
+                       data2 += t1->w;
+                       flags2 += t1->flags_stride;
+                       t1_dec_refpass_step_mqc(t1, flags2, data2, poshalf, neghalf);
+                       data2 += t1->w;
+               }
+               data1 += t1->w << 2;
+               flags1 += t1->flags_stride << 2;
+       }
+       for (i = 0; i < t1->w; ++i) {
+               int *data2 = data1 + i;
+               flag_t *flags2 = flags1 + i;
+               for (j = k; j < t1->h; ++j) {
+                       flags2 += t1->flags_stride;
+                       t1_dec_refpass_step_mqc(t1, flags2, data2, poshalf, neghalf);
+                       data2 += t1->w;
+               }
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+static void t1_dec_refpass_mqc_vsc(
+               opj_t1_t *t1,
+               int bpno)
+{
+       int i, j, k, one, poshalf, neghalf;
+       int vsc;
+       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) {
+                       for (j = k; j < k + 4 && j < t1->h; ++j) {
+                               vsc = ((j == k + 3 || j == t1->h - 1)) ? 1 : 0;
+                               t1_dec_refpass_step_mqc_vsc(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               poshalf,
+                                               neghalf,
+                                               vsc);
+                       }
+               }
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+static void t1_enc_clnpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int bpno,
+               int one,
+               int *nmsedec,
+               int partial,
+               int vsc)
+{
        int v, flag;
        
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
        
-       flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+       flag = vsc ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
        if (partial) {
                goto LABEL_PARTIAL;
        }
-       if (!(*fp & (T1_SIG | T1_VISIT))) {
-               mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
-               v = int_abs(*dp) & one ? 1 : 0;
+       if (!(*flagsp & (T1_SIG | T1_VISIT))) {
+               mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
+               v = int_abs(*datap) & one ? 1 : 0;
                mqc_encode(mqc, v);
                if (v) {
 LABEL_PARTIAL:
-                       *nmsedec += t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
-                       mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
-                       v = *dp < 0 ? 1 : 0;
-                       mqc_encode(mqc, v ^ t1_getspb(t1, flag));
-                       t1_updateflags(fp, v);
-                       *fp |= T1_SIG;
+                       *nmsedec += t1_getnmsedec_sig(int_abs(*datap), bpno + T1_NMSEDEC_FRACBITS);
+                       mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+                       v = *datap < 0 ? 1 : 0;
+                       mqc_encode(mqc, v ^ t1_getspb(flag));
+                       t1_updateflags(flagsp, v, t1->flags_stride);
                }
        }
-       *fp &= ~T1_VISIT;
+       *flagsp &= ~T1_VISIT;
 }
 
-static void t1_dec_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc) {
+static void t1_dec_clnpass_step_partial(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf)
+{
+       int v, flag;
+       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
+       
+       OPJ_ARG_NOT_USED(orient);
+       
+       flag = *flagsp;
+       mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+       v = mqc_decode(mqc) ^ t1_getspb(flag);
+       *datap = v ? -oneplushalf : oneplushalf;
+       t1_updateflags(flagsp, v, t1->flags_stride);
+       *flagsp &= ~T1_VISIT;
+}                              /* VSC and  BYPASS by Antonin */
+
+static void t1_dec_clnpass_step(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf)
+{
        int v, flag;
        
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
        
-       flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
+       flag = *flagsp;
+       if (!(flag & (T1_SIG | T1_VISIT))) {
+               mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
+               if (mqc_decode(mqc)) {
+                       mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+                       v = mqc_decode(mqc) ^ t1_getspb(flag);
+                       *datap = v ? -oneplushalf : oneplushalf;
+                       t1_updateflags(flagsp, v, t1->flags_stride);
+               }
+       }
+       *flagsp &= ~T1_VISIT;
+}                              /* VSC and  BYPASS by Antonin */
+
+static void t1_dec_clnpass_step_vsc(
+               opj_t1_t *t1,
+               flag_t *flagsp,
+               int *datap,
+               int orient,
+               int oneplushalf,
+               int partial,
+               int vsc)
+{
+       int 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 (!(flag & (T1_SIG | T1_VISIT))) {
-               mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
+               mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
                if (mqc_decode(mqc)) {
 LABEL_PARTIAL:
-                       mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
-                       v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
-                       *dp = v ? -oneplushalf : oneplushalf;
-                       t1_updateflags(fp, v);
-                       *fp |= T1_SIG;
+                       mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+                       v = mqc_decode(mqc) ^ t1_getspb(flag);
+                       *datap = v ? -oneplushalf : oneplushalf;
+                       t1_updateflags(flagsp, v, t1->flags_stride);
                }
        }
-       *fp &= ~T1_VISIT;
-}                              /* VSC and  BYPASS by Antonin */
+       *flagsp &= ~T1_VISIT;
+}
 
-static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, int cblksty) {
+static void t1_enc_clnpass(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int *nmsedec,
+               int cblksty)
+{
        int i, j, k, one, agg, runlen, vsc;
        
        opj_mqc_t *mqc = t1->mqc;       /* MQC component */
        
        *nmsedec = 0;
        one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
-       for (k = 0; k < h; k += 4) {
-               for (i = 0; i < w; i++) {
-                       if (k + 3 < h) {
+       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 = !(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] 
+                                       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 = !(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));
+                                       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 | 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)
+                               for (runlen = 0; runlen < 4; ++runlen) {
+                                       if (int_abs(t1->data[((k + runlen)*t1->w) + i]) & one)
                                                break;
                                }
                                mqc_setcurctx(mqc, T1_CTXNO_AGG);
@@ -434,15 +982,29 @@ static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int
                        } else {
                                runlen = 0;
                        }
-                       for (j = k + runlen; j < k + 4 && j < h; j++) {
-                               vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
-                               t1_enc_clnpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, bpno, one, nmsedec, agg && (j == k + runlen), vsc);
+                       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;
+                               t1_enc_clnpass_step(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               orient,
+                                               bpno,
+                                               one,
+                                               nmsedec,
+                                               agg && (j == k + runlen),
+                                               vsc);
                        }
                }
        }
 }
 
-static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int cblksty) {
+static void t1_dec_clnpass(
+               opj_t1_t *t1,
+               int bpno,
+               int orient,
+               int cblksty)
+{
        int i, j, k, one, half, oneplushalf, agg, runlen, vsc;
        int segsym = cblksty & J2K_CCP_CBLKSTY_SEGSYM;
        
@@ -451,22 +1013,16 @@ static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int
        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] 
+       if (cblksty & J2K_CCP_CBLKSTY_VSC) {
+       for (k = 0; k < t1->h; k += 4) {
+               for (i = 0; i < t1->w; ++i) {
+                       if (k + 3 < t1->h) {
+                                       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 = !(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) {
@@ -480,12 +1036,78 @@ static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int
                        } else {
                                runlen = 0;
                        }
-                       for (j = k + runlen; j < k + 4 && j < h; j++) {
-                               vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
-                               t1_dec_clnpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, oneplushalf, agg && (j == k + runlen), vsc);
+                       for (j = k + runlen; j < k + 4 && j < t1->h; ++j) {
+                                       vsc = (j == k + 3 || j == t1->h - 1) ? 1 : 0;
+                                       t1_dec_clnpass_step_vsc(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               orient,
+                                               oneplushalf,
+                                               agg && (j == k + runlen),
+                                               vsc);
                        }
                }
        }
+       } else {
+               int *data1 = t1->data;
+               flag_t *flags1 = &t1->flags[1];
+               for (k = 0; k < (t1->h & ~3); k += 4) {
+                       for (i = 0; i < t1->w; ++i) {
+                               int *data2 = data1 + i;
+                               flag_t *flags2 = flags1 + i;
+                               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 | T1_VISIT | T1_SIG_OTH));
+                               if (agg) {
+                                       mqc_setcurctx(mqc, T1_CTXNO_AGG);
+                                       if (!mqc_decode(mqc)) {
+                                               continue;
+                                       }
+                                       mqc_setcurctx(mqc, T1_CTXNO_UNI);
+                                       runlen = mqc_decode(mqc);
+                                       runlen = (runlen << 1) | mqc_decode(mqc);
+                                       flags2 += runlen * t1->flags_stride;
+                                       data2 += runlen * t1->w;
+                                       for (j = k + runlen; j < k + 4 && j < t1->h; ++j) {
+                                               flags2 += t1->flags_stride;
+                                               if (agg && (j == k + runlen)) {
+                                                       t1_dec_clnpass_step_partial(t1, flags2, data2, orient, oneplushalf);
+                                               } else {
+                                                       t1_dec_clnpass_step(t1, flags2, data2, orient, oneplushalf);
+                                               }
+                                               data2 += t1->w;
+                                       }
+                               } else {
+                                       flags2 += t1->flags_stride;
+                                       t1_dec_clnpass_step(t1, flags2, data2, orient, oneplushalf);
+                                       data2 += t1->w;
+                                       flags2 += t1->flags_stride;
+                                       t1_dec_clnpass_step(t1, flags2, data2, orient, oneplushalf);
+                                       data2 += t1->w;
+                                       flags2 += t1->flags_stride;
+                                       t1_dec_clnpass_step(t1, flags2, data2, orient, oneplushalf);
+                                       data2 += t1->w;
+                                       flags2 += t1->flags_stride;
+                                       t1_dec_clnpass_step(t1, flags2, data2, orient, oneplushalf);
+                                       data2 += t1->w;
+                               }
+                       }
+                       data1 += t1->w << 2;
+                       flags1 += t1->flags_stride << 2;
+               }
+               for (i = 0; i < t1->w; ++i) {
+                       int *data2 = data1 + i;
+                       flag_t *flags2 = flags1 + i;
+                       for (j = k; j < t1->h; ++j) {
+                               flags2 += t1->flags_stride;
+                               t1_dec_clnpass_step(t1, flags2, data2, orient, oneplushalf);
+                               data2 += t1->w;
+                       }
+               }
+       }
+
        if (segsym) {
                int v = 0;
                mqc_setcurctx(mqc, T1_CTXNO_UNI);
@@ -503,13 +1125,23 @@ static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int
 
 
 /** mod fixed_quality */
-static double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps)       {
+static double t1_getwmsedec(
+               int nmsedec,
+               int compno,
+               int level,
+               int orient,
+               int bpno,
+               int qmfbid,
+               double stepsize,
+               int numcomps,
+               int mct)
+{
        double w1, w2, wmsedec;
        if (qmfbid == 1) {
-               w1 = (numcomps > 1) ? mct_getnorm(compno) : 1;
+               w1 = (mct && numcomps==3) ? mct_getnorm(compno) : 1.0;
                w2 = dwt_getnorm(level, orient);
        } else {                        /* if (qmfbid == 0) */
-               w1 = (numcomps > 1) ? mct_getnorm_real(compno) : 1;
+               w1 = (mct && numcomps==3) ? mct_getnorm_real(compno) : 1.0;
                w2 = dwt_getnorm_real(level, orient);
        }
        wmsedec = w1 * w2 * stepsize * (1 << bpno);
@@ -518,35 +1150,75 @@ static double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int
        return wmsedec;
 }
 
+static opj_bool allocate_buffers(
+               opj_t1_t *t1,
+               int w,
+               int h)
+{
+       int datasize=w * h;
+       int flagssize;
+
+       if(datasize > t1->datasize){
+               opj_aligned_free(t1->data);
+               t1->data = (int*) opj_aligned_malloc(datasize * sizeof(int));
+               if(!t1->data){
+                       return OPJ_FALSE;
+               }
+               t1->datasize=datasize;
+       }
+       memset(t1->data,0,datasize * sizeof(int));
+
+       t1->flags_stride=w+2;
+       flagssize=t1->flags_stride * (h+2);
+
+       if(flagssize > t1->flagssize){
+               opj_aligned_free(t1->flags);
+               t1->flags = (flag_t*) opj_aligned_malloc(flagssize * sizeof(flag_t));
+               if(!t1->flags){
+                       return OPJ_FALSE;
+               }
+               t1->flagssize=flagssize;
+       }
+       memset(t1->flags,0,flagssize * sizeof(flag_t));
+
+       t1->w=w;
+       t1->h=h;
+
+       return OPJ_TRUE;
+}
+
 /** mod fixed_quality */
-static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile) {
-       int i, j;
-       int w, h;
-       int passno;
-       int bpno, passtype;
-       int max;
+static void t1_encode_cblk(
+               opj_t1_t *t1,
+               opj_tcd_cblk_enc_t* cblk,
+               int orient,
+               int compno,
+               int level,
+               int qmfbid,
+               double stepsize,
+               int cblksty,
+               int numcomps,
+               int mct,
+               opj_tcd_tile_t * tile)
+{
+       double cumwmsedec = 0.0;
+
+       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
+
+       int passno, bpno, passtype;
        int nmsedec = 0;
-       double cumwmsedec = 0;
+       int i, max;
        char type = T1_TYPE_MQ;
-       
-       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
-       
-       w = cblk->x1 - cblk->x0;
-       h = cblk->y1 - cblk->y0;
-       
+       double tempwmsedec;
+
        max = 0;
-       for (j = 0; j < h; j++) {
-               for (i = 0; i < w; i++) {
-                       max = int_max(max, int_abs(t1->data[j][i]));
-               }
+       for (i = 0; i < t1->w * t1->h; ++i) {
+               int tmp = abs(t1->data[i]);
+               max = int_max(max, tmp);
        }
-       
+
        cblk->numbps = max ? (int_floorlog2(max) + 1) - T1_NMSEDEC_FRACBITS : 0;
        
-       for (i = 0; i <= h; ++i) {
-               memset(&t1->flags[i], 0, (w+1) * sizeof(int));
-       }
-       
        bpno = cblk->numbps - 1;
        passtype = 2;
        
@@ -556,20 +1228,20 @@ static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int
        mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
        mqc_init_enc(mqc, cblk->data);
        
-       for (passno = 0; bpno >= 0; passno++) {
+       for (passno = 0; bpno >= 0; ++passno) {
                opj_tcd_pass_t *pass = &cblk->passes[passno];
                int correction = 3;
                type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
                
                switch (passtype) {
                        case 0:
-                               t1_enc_sigpass(t1, w, h, bpno, orient, &nmsedec, type, cblksty);
+                               t1_enc_sigpass(t1, bpno, orient, &nmsedec, type, cblksty);
                                break;
                        case 1:
-                               t1_enc_refpass(t1, w, h, bpno, &nmsedec, type, cblksty);
+                               t1_enc_refpass(t1, bpno, &nmsedec, type, cblksty);
                                break;
                        case 2:
-                               t1_enc_clnpass(t1, w, h, bpno, orient, &nmsedec, cblksty);
+                               t1_enc_clnpass(t1, bpno, orient, &nmsedec, cblksty);
                                /* code switch SEGMARK (i.e. SEGSYM) */
                                if (cblksty & J2K_CCP_CBLKSTY_SEGSYM)
                                        mqc_segmark_enc(mqc);
@@ -577,8 +1249,9 @@ static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int
                }
                
                /* fixed_quality */
-               cumwmsedec += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
-               tile->distotile += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
+               tempwmsedec = t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps, mct);
+               cumwmsedec += tempwmsedec;
+               tile->distotile += tempwmsedec;
                
                /* Code switch "RESTART" (i.e. TERMALL) */
                if ((cblksty & J2K_CCP_CBLKSTY_TERMALL) && !((passtype == 2) && (bpno - 1 < 0))) {
@@ -649,26 +1322,28 @@ static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int
        }
 }
 
-static void t1_decode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int roishift, int cblksty) {
-       int i, w, h;
+static void t1_decode_cblk(
+               opj_t1_t *t1,
+               opj_tcd_cblk_dec_t* cblk,
+               int orient,
+               int roishift,
+               int cblksty)
+{
+       opj_raw_t *raw = t1->raw;       /* RAW component */
+       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
+
        int bpno, passtype;
        int segno, passno;
        char type = T1_TYPE_MQ; /* BYPASS mode */
-       
-       opj_raw_t *raw = t1->raw;       /* RAW component */
-       opj_mqc_t *mqc = t1->mqc;       /* MQC component */
-       
-       w = cblk->x1 - cblk->x0;
-       h = cblk->y1 - cblk->y0;
-       
-       for (i = 0; i <= h; ++i) {
-               memset(&t1->flags[i], 0, (w + 1) * sizeof(int));
-       }
-       
-       for (i = 0; i < h; ++i) {
-               memset(&t1->data[i], 0, w * sizeof(int));
-       }
-       
+
+       if(!allocate_buffers(
+                               t1,
+                               cblk->x1 - cblk->x0,
+                               cblk->y1 - cblk->y0))
+       {
+               return;
+       }
+
        bpno = roishift + cblk->numbps - 1;
        passtype = 2;
        
@@ -677,27 +1352,47 @@ static void t1_decode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int
        mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
        mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
        
-       for (segno = 0; segno < cblk->numsegs; segno++) {
+       for (segno = 0; segno < cblk->numsegs; ++segno) {
                opj_tcd_seg_t *seg = &cblk->segs[segno];
                
                /* BYPASS mode */
                type = ((bpno <= (cblk->numbps - 1) - 4) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
+               /* FIXME: slviewer gets here with a null pointer. Why? Partially downloaded and/or corrupt textures? */
+               if(seg->data == NULL){
+                       continue;
+               }
                if (type == T1_TYPE_RAW) {
-                       raw_init_dec(raw, seg->data, seg->len);
+                       raw_init_dec(raw, (*seg->data) + seg->dataindex, seg->len);
                } else {
-                       mqc_init_dec(mqc, seg->data, seg->len);
+                       mqc_init_dec(mqc, (*seg->data) + seg->dataindex, seg->len);
                }
                
-               for (passno = 0; passno < seg->numpasses; passno++) {
+               for (passno = 0; passno < seg->numpasses; ++passno) {
                        switch (passtype) {
                                case 0:
-                                       t1_dec_sigpass(t1, w, h, bpno+1, orient, type, cblksty);
+                                       if (type == T1_TYPE_RAW) {
+                                               t1_dec_sigpass_raw(t1, bpno+1, orient, cblksty);
+                                       } else {
+                                               if (cblksty & J2K_CCP_CBLKSTY_VSC) {
+                                                       t1_dec_sigpass_mqc_vsc(t1, bpno+1, orient);
+                                               } else {
+                                                       t1_dec_sigpass_mqc(t1, bpno+1, orient);
+                                               }
+                                       }
                                        break;
                                case 1:
-                                       t1_dec_refpass(t1, w, h, bpno+1, type, cblksty);
+                                       if (type == T1_TYPE_RAW) {
+                                               t1_dec_refpass_raw(t1, bpno+1, cblksty);
+                                       } else {
+                                               if (cblksty & J2K_CCP_CBLKSTY_VSC) {
+                                                       t1_dec_refpass_mqc_vsc(t1, bpno+1);
+                                               } else {
+                                                       t1_dec_refpass_mqc(t1, bpno+1);
+                                               }
+                                       }
                                        break;
                                case 2:
-                                       t1_dec_clnpass(t1, w, h, bpno+1, orient, cblksty);
+                                       t1_dec_clnpass(t1, bpno+1, orient, cblksty);
                                        break;
                        }
                        
@@ -715,212 +1410,23 @@ static void t1_decode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int
        }
 }
 
-static int t1_init_ctxno_zc(int f, int orient) {
-       int h, v, d, n, t, hv;
-       n = 0;
-       h = ((f & T1_SIG_W) != 0) + ((f & T1_SIG_E) != 0);
-       v = ((f & T1_SIG_N) != 0) + ((f & T1_SIG_S) != 0);
-       d = ((f & T1_SIG_NW) != 0) + ((f & T1_SIG_NE) != 0) + ((f & T1_SIG_SE) != 0) + ((f & T1_SIG_SW) != 0);
-       
-       switch (orient) {
-               case 2:
-                       t = h;
-                       h = v;
-                       v = t;
-               case 0:
-               case 1:
-                       if (!h) {
-                               if (!v) {
-                                       if (!d)
-                                               n = 0;
-                                       else if (d == 1)
-                                               n = 1;
-                                       else
-                                               n = 2;
-                               } else if (v == 1) {
-                                       n = 3;
-                               } else {
-                                       n = 4;
-                               }
-                       } else if (h == 1) {
-                               if (!v) {
-                                       if (!d)
-                                               n = 5;
-                                       else
-                                               n = 6;
-                               } else {
-                                       n = 7;
-                               }
-                       } else
-                               n = 8;
-                       break;
-               case 3:
-                       hv = h + v;
-                       if (!d) {
-                               if (!hv) {
-                                       n = 0;
-                               } else if (hv == 1) {
-                                       n = 1;
-                               } else {
-                                       n = 2;
-                               }
-                       } else if (d == 1) {
-                               if (!hv) {
-                                       n = 3;
-                               } else if (hv == 1) {
-                                       n = 4;
-                               } else {
-                                       n = 5;
-                               }
-                       } else if (d == 2) {
-                               if (!hv) {
-                                       n = 6;
-                               } else {
-                                       n = 7;
-                               }
-                       } else {
-                               n = 8;
-                       }
-                       break;
-       }
-       
-       return (T1_CTXNO_ZC + n);
-}
-
-static int t1_init_ctxno_sc(int f) {
-       int hc, vc, n;
-       n = 0;
+/* ----------------------------------------------------------------------- */
 
-       hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
-               T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
-              1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
-                  (T1_SIG_E | T1_SGN_E)) +
-                  ((f & (T1_SIG_W | T1_SGN_W)) ==
-                  (T1_SIG_W | T1_SGN_W)), 1);
-       
-       vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
-               T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
-              1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
-                  (T1_SIG_N | T1_SGN_N)) +
-                  ((f & (T1_SIG_S | T1_SGN_S)) ==
-                  (T1_SIG_S | T1_SGN_S)), 1);
-       
-       if (hc < 0) {
-               hc = -hc;
-               vc = -vc;
-       }
-       if (!hc) {
-               if (vc == -1)
-                       n = 1;
-               else if (!vc)
-                       n = 0;
-               else
-                       n = 1;
-       } else if (hc == 1) {
-               if (vc == -1)
-                       n = 2;
-               else if (!vc)
-                       n = 3;
-               else
-                       n = 4;
-       }
-       
-       return (T1_CTXNO_SC + n);
-}
+opj_t1_t* t1_create(opj_common_ptr cinfo) {
+       opj_t1_t *t1 = (opj_t1_t*) opj_malloc(sizeof(opj_t1_t));
+       if(!t1)
+               return NULL;
 
-static int t1_init_ctxno_mag(int f) {
-       int n;
-       if (!(f & T1_REFINE))
-               n = (f & (T1_SIG_OTH)) ? 1 : 0;
-       else
-               n = 2;
-       
-       return (T1_CTXNO_MAG + n);
-}
+       t1->cinfo = cinfo;
+       /* create MQC and RAW handles */
+       t1->mqc = mqc_create();
+       t1->raw = raw_create();
 
-static int t1_init_spb(int f) {
-       int hc, vc, n;
-       
-       hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
-               T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
-              1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
-                  (T1_SIG_E | T1_SGN_E)) +
-                  ((f & (T1_SIG_W | T1_SGN_W)) ==
-                  (T1_SIG_W | T1_SGN_W)), 1);
-       
-       vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
-               T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
-              1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
-                  (T1_SIG_N | T1_SGN_N)) +
-                  ((f & (T1_SIG_S | T1_SGN_S)) ==
-                  (T1_SIG_S | T1_SGN_S)), 1);
-       
-       if (!hc && !vc)
-               n = 0;
-       else
-               n = (!(hc > 0 || (!hc && vc > 0)));
-       
-       return n;
-}
+       t1->data=NULL;
+       t1->flags=NULL;
+       t1->datasize=0;
+       t1->flagssize=0;
 
-static void t1_init_luts(opj_t1_t *t1) {
-       int i, j;
-       double u, v, t;
-       for (j = 0; j < 4; j++) {
-               for (i = 0; i < 256; ++i) {
-                       t1->lut_ctxno_zc[(j << 8) | i] = t1_init_ctxno_zc(i, j);
-               }
-       }
-       for (i = 0; i < 256; i++) {
-               t1->lut_ctxno_sc[i] = t1_init_ctxno_sc(i << 4);
-       }
-       for (j = 0; j < 2; j++) {
-               for (i = 0; i < 2048; ++i) {
-                       t1->lut_ctxno_mag[(j << 11) + i] = t1_init_ctxno_mag((j ? T1_REFINE : 0) | i);
-               }
-       }
-       for (i = 0; i < 256; ++i) {
-               t1->lut_spb[i] = t1_init_spb(i << 4);
-       }
-       /* FIXME FIXME FIXME */
-       /* fprintf(stdout,"nmsedec luts:\n"); */
-       for (i = 0; i < (1 << T1_NMSEDEC_BITS); i++) {
-               t = i / pow(2, T1_NMSEDEC_FRACBITS);
-               u = t;
-               v = t - 1.5;
-               t1->lut_nmsedec_sig[i] = 
-                       int_max(0, 
-                       (int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
-               t1->lut_nmsedec_sig0[i] =
-                       int_max(0,
-                       (int) (floor((u * u) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
-               u = t - 1.0;
-               if (i & (1 << (T1_NMSEDEC_BITS - 1))) {
-                       v = t - 1.5;
-               } else {
-                       v = t - 0.5;
-               }
-               t1->lut_nmsedec_ref[i] =
-                       int_max(0,
-                       (int) (floor((u * u - v * v) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
-               t1->lut_nmsedec_ref0[i] =
-                       int_max(0,
-                       (int) (floor((u * u) * pow(2, T1_NMSEDEC_FRACBITS) + 0.5) / pow(2, T1_NMSEDEC_FRACBITS) * 8192.0));
-       }
-}
-
-/* ----------------------------------------------------------------------- */
-
-opj_t1_t* t1_create(opj_common_ptr cinfo) {
-       opj_t1_t *t1 = (opj_t1_t*)opj_malloc(sizeof(opj_t1_t));
-       if(t1) {
-               t1->cinfo = cinfo;
-               /* create MQC and RAW handles */
-               t1->mqc = mqc_create();
-               t1->raw = raw_create();
-               /* initialize the look-up tables of the Tier-1 coder/decoder */
-               t1_init_luts(t1);
-       }
        return t1;
 }
 
@@ -929,33 +1435,46 @@ void t1_destroy(opj_t1_t *t1) {
                /* destroy MQC and RAW handles */
                mqc_destroy(t1->mqc);
                raw_destroy(t1->raw);
+               opj_aligned_free(t1->data);
+               opj_aligned_free(t1->flags);
                opj_free(t1);
        }
 }
 
-void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) {
+void t1_encode_cblks(
+               opj_t1_t *t1,
+               opj_tcd_tile_t *tile,
+               opj_tcp_t *tcp)
+{
        int 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];
+       for (compno = 0; compno < tile->numcomps; ++compno) {
+               opj_tcd_tilecomp_t* tilec = &tile->comps[compno];
+               opj_tccp_t* tccp = &tcp->tccps[compno];
+               int tile_w = tilec->x1 - tilec->x0;
 
-               for (resno = 0; resno < tilec->numresolutions; resno++) {
+               for (resno = 0; resno < tilec->numresolutions; ++resno) {
                        opj_tcd_resolution_t *res = &tilec->resolutions[resno];
 
-                       for (bandno = 0; bandno < res->numbands; bandno++) {
-                               opj_tcd_band_t *band = &res->bands[bandno];
+                       for (bandno = 0; bandno < res->numbands; ++bandno) {
+                               opj_tcd_band_t* restrict band = &res->bands[bandno];
+        int bandconst = 8192 * 8192 / ((int) floor(band->stepsize * 8192));
 
-                               for (precno = 0; precno < res->pw * res->ph; precno++) {
+                               for (precno = 0; precno < res->pw * res->ph; ++precno) {
                                        opj_tcd_precinct_t *prc = &band->precincts[precno];
 
-                                       for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
-                                               int x, y, w, i, j, orient;
-                                               opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];
+                                       for (cblkno = 0; cblkno < prc->cw * prc->ch; ++cblkno) {
+                                               opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
+                                               int* restrict datap;
+                                               int* restrict tiledp;
+                                               int cblk_w;
+                                               int cblk_h;
+                                               int i, j;
 
-                                               x = cblk->x0 - band->x0;
-                                               y = cblk->y0 - band->y0;
+                                               int x = cblk->x0 - band->x0;
+                                               int y = cblk->y0 - band->y0;
                                                if (band->bandno & 1) {
                                                        opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
                                                        x += pres->x1 - pres->x0;
@@ -964,33 +1483,51 @@ void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) {
                                                        opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
                                                        y += pres->y1 - pres->y0;
                                                }
-                                               
-                                               w = tilec->x1 - tilec->x0;
-                                               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) * w] << T1_NMSEDEC_FRACBITS;
+
+                                               if(!allocate_buffers(
+                                                                       t1,
+                                                                       cblk->x1 - cblk->x0,
+                                                                       cblk->y1 - cblk->y0))
+                                               {
+                                                       return;
+                                               }
+
+                                               datap=t1->data;
+                                               cblk_w = t1->w;
+                                               cblk_h = t1->h;
+
+                                               tiledp=&tilec->data[(y * tile_w) + x];
+                                               if (tccp->qmfbid == 1) {
+                                                       for (j = 0; j < cblk_h; ++j) {
+                                                               for (i = 0; i < cblk_w; ++i) {
+                                                                       int tmp = tiledp[(j * tile_w) + i];
+                                                                       datap[(j * cblk_w) + i] = tmp << 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] = 
+                                               } else {                /* if (tccp->qmfbid == 0) */
+                                                       for (j = 0; j < cblk_h; ++j) {
+                                                               for (i = 0; i < cblk_w; ++i) {
+                                                                       int tmp = tiledp[(j * tile_w) + i];
+                                                                       datap[(j * cblk_w) + i] =
                                                                                fix_mul(
-                                                                               tilec->data[x + i + (y + j) * w],
-                                                                               8192 * 8192 / ((int) floor(band->stepsize * 8192))) >> (13 - T1_NMSEDEC_FRACBITS);
+                                                                               tmp,
+                                                                               bandconst) >> (11 - T1_NMSEDEC_FRACBITS);
                                                                }
                                                        }
                                                }
-                                               orient = band->bandno;  /* FIXME */
-                                               if (orient == 2) {
-                                                       orient = 1;
-                                               } else if (orient == 1) {
-                                                       orient = 2;
-                                               }
 
-                                               t1_encode_cblk(t1, cblk, orient, compno, tilec->numresolutions - 1 - resno, tcp->tccps[compno].qmfbid, band->stepsize, tcp->tccps[compno].cblksty, tile->numcomps, tile);
+                                               t1_encode_cblk(
+                                                               t1,
+                                                               cblk,
+                                                               band->bandno,
+                                                               compno,
+                                                               tilec->numresolutions - 1 - resno,
+                                                               tccp->qmfbid,
+                                                               band->stepsize,
+                                                               tccp->cblksty,
+                                                               tile->numcomps,
+                                                               tcp->mct,
+                                                               tile);
 
                                        } /* cblkno */
                                } /* precno */
@@ -999,84 +1536,448 @@ void t1_encode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) {
        } /* compno  */
 }
 
-void t1_decode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) {
-       int compno, resno, bandno, precno, cblkno;
+void t1_decode_cblks(
+               opj_t1_t* t1,
+               opj_tcd_tilecomp_t* tilec,
+               opj_tccp_t* tccp)
+{
+       int resno, bandno, precno, cblkno;
 
-       for (compno = 0; compno < tile->numcomps; compno++) {
-               opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
+       int tile_w = tilec->x1 - tilec->x0;
 
-               for (resno = 0; resno < tilec->numresolutions; resno++) {
-                       opj_tcd_resolution_t *res = &tilec->resolutions[resno];
+       for (resno = 0; resno < tilec->numresolutions; ++resno) {
+               opj_tcd_resolution_t* res = &tilec->resolutions[resno];
 
-                       for (bandno = 0; bandno < res->numbands; bandno++) {
-                               opj_tcd_band_t *band = &res->bands[bandno];
+               for (bandno = 0; bandno < res->numbands; ++bandno) {
+                       opj_tcd_band_t* restrict band = &res->bands[bandno];
 
-                               for (precno = 0; precno < res->pw * res->ph; precno++) {
-                                       opj_tcd_precinct_t *prc = &band->precincts[precno];
+                       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];
+                                       int* restrict datap;
+                                       int cblk_w, cblk_h;
+                                       int x, y;
+                                       int i, j;
+
+                                       t1_decode_cblk(
+                                                       t1,
+                                                       cblk,
+                                                       band->bandno,
+                                                       tccp->roishift,
+                                                       tccp->cblksty);
 
-                                       for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
-                                               int x, y, w, i, j, orient;
-                                               opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];
+                                       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;
+                                       }
 
-                                               orient = band->bandno;  /* FIXME */
-                                               if (orient == 2) {
-                                                       orient = 1;
-                                               } else if (orient == 1) {
-                                                       orient = 2;
+                                       datap=t1->data;
+                                       cblk_w = t1->w;
+                                       cblk_h = t1->h;
+
+                                       if (tccp->roishift) {
+                                               int thresh = 1 << tccp->roishift;
+                                               for (j = 0; j < cblk_h; ++j) {
+                                                       for (i = 0; i < cblk_w; ++i) {
+                                                               int val = datap[(j * cblk_w) + i];
+                                                               int mag = abs(val);
+                                                               if (mag >= thresh) {
+                                                                       mag >>= tccp->roishift;
+                                                                       datap[(j * cblk_w) + i] = val < 0 ? -mag : mag;
+                                                               }
+                                                       }
                                                }
-                                               
-                                               t1_decode_cblk(t1, cblk, orient, tcp->tccps[compno].roishift, tcp->tccps[compno].cblksty);
+                                       }
 
-                                               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 (tccp->qmfbid == 1) {
+                                               int* restrict tiledp = &tilec->data[(y * tile_w) + x];
+                                               for (j = 0; j < cblk_h; ++j) {
+                                                       for (i = 0; i < cblk_w; ++i) {
+                                                               int tmp = datap[(j * cblk_w) + i];
+                                                               ((int*)tiledp)[(j * tile_w) + i] = tmp / 2;
+                                                       }
                                                }
-                                               if (band->bandno & 2) {
-                                                       opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
-                                                       y += pres->y1 - pres->y0;
+                                       } else {                /* if (tccp->qmfbid == 0) */
+                                               float* restrict tiledp = (float*) &tilec->data[(y * tile_w) + x];
+                                               for (j = 0; j < cblk_h; ++j) {
+                                                       float* restrict tiledp2 = tiledp;
+                                                       for (i = 0; i < cblk_w; ++i) {
+                                                               float tmp = *datap * band->stepsize;
+                                                               *tiledp2 = tmp;
+                                                               datap++;
+                                                               tiledp2++;
+                                                       }
+                                                       tiledp += tile_w;
                                                }
-                                               
-                                               if (tcp->tccps[compno].roishift) {
-                                                       int thresh = 1 << tcp->tccps[compno].roishift;
-                                                       for (j = 0; j < cblk->y1 - cblk->y0; j++) {
-                                                               for (i = 0; i < cblk->x1 - cblk->x0; i++) {
-                                                                       int val = t1->data[j][i];
-                                                                       int mag = int_abs(val);
-                                                                       if (mag >= thresh) {
-                                                                               mag >>= tcp->tccps[compno].roishift;
-                                                                               t1->data[j][i] = val < 0 ? -mag : mag;
-                                                                       }
+                                       }
+                                       opj_free(cblk->data);
+                                       opj_free(cblk->segs);
+                               } /* cblkno */
+                               opj_free(precinct->cblks.dec);
+                       } /* precno */
+               } /* bandno */
+       } /* resno */
+}
+
+
+
+/* ----------------------------------------------------------------------- */
+/**
+ * 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* t1_create_v2()
+{
+       opj_t1_t *l_t1 = 00;
+
+       l_t1 = (opj_t1_t*) opj_malloc(sizeof(opj_t1_t));
+       if
+               (!l_t1)
+       {
+               return 00;
+       }
+       memset(l_t1,0,sizeof(opj_t1_t));
+
+       /* create MQC and RAW handles */
+       l_t1->mqc = mqc_create();
+       if
+               (! l_t1->mqc)
+       {
+               t1_destroy(l_t1);
+               return 00;
+       }
+       l_t1->raw = raw_create();
+       if
+               (! l_t1->raw)
+       {
+               t1_destroy(l_t1);
+               return 00;
+       }
+       return l_t1;
+}
+
+
+/**
+ * Destroys a previously created T1 handle
+ *
+ * @param p_t1 Tier 1 handle to destroy
+*/
+void t1_destroy_v2(opj_t1_t *p_t1)
+{
+       if
+               (! p_t1)
+       {
+               return;
+       }
+
+       /* destroy MQC and RAW handles */
+       mqc_destroy(p_t1->mqc);
+       p_t1->mqc = 00;
+       raw_destroy(p_t1->raw);
+       p_t1->raw = 00;
+       if
+               (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;
+       }
+       opj_free(p_t1);
+}
+
+void t1_decode_cblks_v2(
+               opj_t1_t* t1,
+               opj_tcd_tilecomp_v2_t* tilec,
+               opj_tccp_t* tccp)
+{
+       OPJ_UINT32 resno, bandno, precno, cblkno;
+       OPJ_UINT32 tile_w = tilec->x1 - tilec->x0;
+
+       for (resno = 0; resno < tilec->minimum_num_resolutions; ++resno) {
+               opj_tcd_resolution_v2_t* res = &tilec->resolutions[resno];
+
+               for (bandno = 0; bandno < res->numbands; ++bandno) {
+                       opj_tcd_band_v2_t* restrict band = &res->bands[bandno];
+
+                       for (precno = 0; precno < res->pw * res->ph; ++precno) {
+                               opj_tcd_precinct_v2_t* precinct = &band->precincts[precno];
+
+                               for (cblkno = 0; cblkno < precinct->cw * precinct->ch; ++cblkno) {
+                                       opj_tcd_cblk_dec_v2_t* cblk = &precinct->cblks.dec[cblkno];
+                                       OPJ_INT32* restrict datap;
+                                       void* restrict tiledp;
+                                       OPJ_UINT32 cblk_w, cblk_h;
+                                       OPJ_INT32 x, y;
+                                       OPJ_UINT32 i, j;
+
+                                       t1_decode_cblk_v2(
+                                                       t1,
+                                                       cblk,
+                                                       band->bandno,
+                                                       tccp->roishift,
+                                                       tccp->cblksty);
+
+                                       x = cblk->x0 - band->x0;
+                                       y = cblk->y0 - band->y0;
+                                       if (band->bandno & 1) {
+                                               opj_tcd_resolution_v2_t* pres = &tilec->resolutions[resno - 1];
+                                               x += pres->x1 - pres->x0;
+                                       }
+                                       if (band->bandno & 2) {
+                                               opj_tcd_resolution_v2_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;
                                                                }
                                                        }
                                                }
-                                               
-                                               w = tilec->x1 - tilec->x0;
-                                               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) * w] = t1->data[j][i]/2;
-                                                               }
+                                       }
+
+                                       tiledp=(void*)&tilec->data[(y * tile_w) + x];
+                                       if (tccp->qmfbid == 1) {
+                                               for (j = 0; j < cblk_h; ++j) {
+                                                       for (i = 0; i < cblk_w; ++i) {
+                                                               OPJ_INT32 tmp = datap[(j * cblk_w) + i];
+                                                               ((OPJ_INT32*)tiledp)[(j * tile_w) + i] = tmp / 2;
                                                        }
-                                               } else {                /* if (tcp->tccps[compno].qmfbid == 0) */
-                                                       for (j = 0; j < cblk->y1 - cblk->y0; j++) {
-                                                               for (i = 0; i < cblk->x1 - cblk->x0; i++) {
-                                                                       if (t1->data[j][i] >> 1 == 0) {
-                                                                               tilec->data[x + i + (y + j) * w] = 0;
-                                                                       } else {
-                                                                               double tmp = (double)(t1->data[j][i] * band->stepsize * 4096.0);
-                                                                               int tmp2 = ((int) (floor(fabs(tmp)))) + ((int) floor(fabs(tmp*2))%2);
-                                                                               tilec->data[x + i + (y + j) * w] = ((tmp<0)?-tmp2:tmp2);
-                                                                       }
-                                                               }
+                                               }
+                                       } else {                /* if (tccp->qmfbid == 0) */
+                                               for (j = 0; j < cblk_h; ++j) {
+                                                       for (i = 0; i < cblk_w; ++i) {
+                                                               float tmp = datap[(j * cblk_w) + i] * band->stepsize;
+                                                               ((float*)tiledp)[(j * tile_w) + i] = tmp;
                                                        }
                                                }
-                                       } /* cblkno */
-                               } /* precno */
-                       } /* bandno */
-               } /* resno */
-       } /* compno */
+                                       }
+                                       //opj_free(cblk->segs);
+                                       //cblk->segs = 00;
+                               } /* cblkno */
+                       } /* precno */
+               } /* bandno */
+       } /* resno */
+}
+
+
+static void t1_decode_cblk_v2(
+               opj_t1_t *t1,
+               opj_tcd_cblk_dec_v2_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;
+       OPJ_UINT32 passtype;
+       OPJ_UINT32 segno, passno;
+       OPJ_BYTE type = T1_TYPE_MQ; /* BYPASS mode */
+
+       if(!allocate_buffers(
+                               t1,
+                               cblk->x1 - cblk->x0,
+                               cblk->y1 - cblk->y0))
+       {
+               return;
+       }
+
+       bpno = roishift + cblk->numbps - 1;
+       passtype = 2;
+
+       mqc_resetstates(mqc);
+       mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
+       mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
+       mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
+
+       for (segno = 0; segno < cblk->real_num_segs; ++segno) {
+               opj_tcd_seg_t *seg = &cblk->segs[segno];
+
+               /* BYPASS mode */
+               type = ((bpno <= ((OPJ_INT32) (cblk->numbps) - 1) - 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) {
+                       raw_init_dec(raw, (*seg->data) + seg->dataindex, seg->len);
+               } else {
+                       mqc_init_dec(mqc, (*seg->data) + seg->dataindex, seg->len);
+               }
+
+               for (passno = 0; passno < seg->real_num_passes; ++passno) {
+                       switch (passtype) {
+                               case 0:
+                                       t1_dec_sigpass(t1, bpno+1, orient, type, cblksty);
+                                       break;
+                               case 1:
+                                       t1_dec_refpass(t1, bpno+1, type, cblksty);
+                                       break;
+                               case 2:
+                                       t1_dec_clnpass(t1, bpno+1, orient, cblksty);
+                                       break;
+                       }
+
+                       if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) {
+                               mqc_resetstates(mqc);
+                               mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
+                               mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
+                               mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
+                       }
+                       if (++passtype == 3) {
+                               passtype = 0;
+                               bpno--;
+                       }
+               }
+       }
 }
 
+static void t1_dec_refpass(
+               opj_t1_t *t1,
+               OPJ_INT32 bpno,
+               OPJ_BYTE type,
+               OPJ_UINT32 cblksty)
+{
+       OPJ_UINT32 i, j, k;
+       OPJ_INT32 one, poshalf, neghalf;
+       OPJ_UINT32 vsc;
+       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) {
+                       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;
+                               t1_dec_refpass_step(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               poshalf,
+                                               neghalf,
+                                               type,
+                                               vsc);
+                       }
+               }
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+
+static void t1_dec_refpass_step(
+               opj_t1_t *t1,
+               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) {
+               mqc_setcurctx(mqc, t1_getctxno_mag(flag));      /* ESSAI */
+               if (type == T1_TYPE_RAW) {
+                       v = raw_decode(raw);
+               } else {
+                       v = mqc_decode(mqc);
+               }
+               t = v ? poshalf : neghalf;
+               *datap += *datap < 0 ? -t : t;
+               *flagsp |= T1_REFINE;
+       }
+}                              /* VSC and  BYPASS by Antonin  */
+
+static void t1_dec_sigpass(
+               opj_t1_t *t1,
+               OPJ_INT32 bpno,
+               OPJ_UINT32 orient,
+               OPJ_BYTE type,
+               OPJ_UINT32 cblksty)
+{
+       OPJ_UINT32 i, j, k, vsc;
+       OPJ_INT32 one, half, oneplushalf;
+       one = 1 << bpno;
+       half = one >> 1;
+       oneplushalf = one | half;
+       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;
+                               t1_dec_sigpass_step(
+                                               t1,
+                                               &t1->flags[((j+1) * t1->flags_stride) + i + 1],
+                                               &t1->data[(j * t1->w) + i],
+                                               orient,
+                                               oneplushalf,
+                                               type,
+                                               vsc);
+                       }
+               }
+       }
+}                              /* VSC and  BYPASS by Antonin */
+
+static void t1_dec_sigpass_step(
+               opj_t1_t *t1,
+               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 (raw_decode(raw)) {
+                               v = raw_decode(raw);    /* ESSAI */
+                               *datap = v ? -oneplushalf : oneplushalf;
+                               t1_updateflags(flagsp, v, t1->flags_stride);
+                       }
+               } else {
+                       mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient));
+                       if (mqc_decode(mqc)) {
+                               mqc_setcurctx(mqc, t1_getctxno_sc(flag));
+                               v = mqc_decode(mqc) ^ t1_getspb(flag);
+                               *datap = v ? -oneplushalf : oneplushalf;
+                               t1_updateflags(flagsp, v, t1->flags_stride);
+                       }
+               }
+               *flagsp |= T1_VISIT;
+       }
+}                              /* VSC and  BYPASS by Antonin */