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openjpeg/libopenjpeg/t1.c

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/*
* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
* Copyright (c) 2002-2007, Professor Benoit Macq
* Copyright (c) 2001-2003, David Janssens
* 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
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "opj_includes.h"
#include "t1_luts.h"
/** @defgroup T1 T1 - Implementation of the tier-1 coding */
/*@{*/
/** @name Local static functions */
/*@{*/
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,
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,
int *datap,
int orient,
int oneplushalf,
char type,
int vsc);
/**
Encode significant pass
*/
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,
int bpno,
int orient,
char type,
int cblksty);
/**
Encode refinement pass
*/
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,
flag_t *flagsp,
int *datap,
int poshalf,
int neghalf,
char type,
int vsc);
/**
Encode refinement pass
*/
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,
int bpno,
char type,
int cblksty);
/**
Encode clean-up pass
*/
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,
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 bpno,
int orient,
int *nmsedec,
int cblksty);
/**
Decode clean-up pass
*/
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);
/**
Encode 1 code-block
@param t1 T1 handle
@param cblk Code-block coding parameters
@param orient
@param compno Component number
@param level
@param qmfbid
@param stepsize
@param cblksty Code-block style
@param numcomps
@param tile
*/
static void t1_encode_cblk(
opj_t1_t *t1,
opj_tcd_cblk_enc_t* cblk,
int orient,
int compno,
int level,
int qmfbid,
double stepsize,
int cblksty,
int numcomps,
opj_tcd_tile_t * tile);
/**
Decode 1 code-block
@param t1 T1 handle
@param cblk Code-block coding parameters
@param orient
@param roishift Region of interest shifting value
@param cblksty Code-block style
*/
static void t1_decode_cblk(
opj_t1_t *t1,
opj_tcd_cblk_dec_t* cblk,
int orient,
int roishift,
int cblksty);
/*@}*/
/*@}*/
/* ----------------------------------------------------------------------- */
static char t1_getctxno_zc(int f, int orient) {
return lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
}
static char t1_getctxno_sc(int f) {
return lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}
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 char t1_getspb(int f) {
return lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}
static short t1_getnmsedec_sig(int x, int bitpos) {
if (bitpos > T1_NMSEDEC_FRACBITS) {
return lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
}
return lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}
static short t1_getnmsedec_ref(int x, int bitpos) {
if (bitpos > T1_NMSEDEC_FRACBITS) {
return lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
}
return lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}
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[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[0] |= mod[s+6];
sp[1] |= T1_SIG_NW;
}
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 ? ((*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(*datap) & one ? 1 : 0;
mqc_setcurctx(mqc, t1_getctxno_zc(flag, orient)); /* ESSAI */
if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
mqc_bypass_enc(mqc, v);
} else {
mqc_encode(mqc, v);
}
if (v) {
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_bypass_enc(mqc, v);
} else {
mqc_encode(mqc, v ^ t1_getspb(flag));
}
t1_updateflags(flagsp, v, t1->flags_stride);
}
*flagsp |= T1_VISIT;
}
}
static void t1_dec_sigpass_step(
opj_t1_t *t1,
flag_t *flagsp,
int *datap,
int orient,
int oneplushalf,
char type,
int vsc)
{
int v, flag;
opj_raw_t *raw = t1->raw; /* RAW component */
opj_mqc_t *mqc = t1->mqc; /* MQC component */
flag = vsc ? ((*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 */
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 < 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 bpno,
int orient,
char type,
int cblksty)
{
int i, j, k, one, half, oneplushalf, vsc;
one = 1 << bpno;
half = one >> 1;
oneplushalf = one | half;
for (k = 0; k < 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_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 ? ((*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(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_bypass_enc(mqc, v);
} else {
mqc_encode(mqc, v);
}
*flagsp |= T1_REFINE;
}
}
static void t1_dec_refpass_step(
opj_t1_t *t1,
flag_t *flagsp,
int *datap,
int poshalf,
int neghalf,
char type,
int vsc)
{
int v, t, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
opj_raw_t *raw = t1->raw; /* RAW component */
flag = vsc ? ((*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_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 < 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 bpno,
char type,
int cblksty)
{
int i, j, k, one, poshalf, neghalf;
int vsc;
one = 1 << bpno;
poshalf = one >> 1;
neghalf = bpno > 0 ? -poshalf : -1;
for (k = 0; k < 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_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 ? ((*flagsp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*flagsp);
if (partial) {
goto LABEL_PARTIAL;
}
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(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);
}
}
*flagsp &= ~T1_VISIT;
}
static void t1_dec_clnpass_step(
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(flag, orient));
if (mqc_decode(mqc)) {
LABEL_PARTIAL:
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_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 < t1->h; k += 4) {
for (i = 0; i < t1->w; ++i) {
if (k + 3 < t1->h) {
if (cblksty & J2K_CCP_CBLKSTY_VSC) {
agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| (MACRO_t1_flags(1 + k + 3,1 + i)
& (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
} else {
agg = !(MACRO_t1_flags(1 + k,1 + i) & (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)*t1->w) + i]) & one)
break;
}
mqc_setcurctx(mqc, T1_CTXNO_AGG);
mqc_encode(mqc, runlen != 4);
if (runlen == 4) {
continue;
}
mqc_setcurctx(mqc, T1_CTXNO_UNI);
mqc_encode(mqc, runlen >> 1);
mqc_encode(mqc, runlen & 1);
} else {
runlen = 0;
}
for (j = k + runlen; j < k + 4 && j < 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 bpno,
int orient,
int cblksty)
{
int i, j, k, one, half, oneplushalf, agg, runlen, vsc;
int segsym = cblksty & J2K_CCP_CBLKSTY_SEGSYM;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
one = 1 << bpno;
half = one >> 1;
oneplushalf = one | half;
for (k = 0; k < t1->h; k += 4) {
for (i = 0; i < t1->w; ++i) {
if (k + 3 < t1->h) {
if (cblksty & J2K_CCP_CBLKSTY_VSC) {
agg = !(MACRO_t1_flags(1 + k,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| MACRO_t1_flags(1 + k + 1,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| MACRO_t1_flags(1 + k + 2,1 + i) & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| (MACRO_t1_flags(1 + k + 3,1 + i)
& (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
} else {
agg = !(MACRO_t1_flags(1 + k,1 + i) & (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) {
mqc_setcurctx(mqc, T1_CTXNO_AGG);
if (!mqc_decode(mqc)) {
continue;
}
mqc_setcurctx(mqc, T1_CTXNO_UNI);
runlen = mqc_decode(mqc);
runlen = (runlen << 1) | mqc_decode(mqc);
} else {
runlen = 0;
}
for (j = k + runlen; j < k + 4 && j < t1->h; ++j) {
vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == t1->h - 1)) ? 1 : 0;
t1_dec_clnpass_step(
t1,
&t1->flags[((j+1) * t1->flags_stride) + i + 1],
&t1->data[(j * t1->w) + i],
orient,
oneplushalf,
agg && (j == k + runlen),
vsc);
}
}
}
if (segsym) {
int v = 0;
mqc_setcurctx(mqc, T1_CTXNO_UNI);
v = mqc_decode(mqc);
v = (v << 1) | mqc_decode(mqc);
v = (v << 1) | mqc_decode(mqc);
v = (v << 1) | mqc_decode(mqc);
/*
if (v!=0xa) {
opj_event_msg(t1->cinfo, EVT_WARNING, "Bad segmentation symbol %x\n", v);
}
*/
}
} /* VSC and BYPASS by Antonin */
/** mod fixed_quality */
static double t1_getwmsedec(
int nmsedec,
int compno,
int level,
int orient,
int bpno,
int qmfbid,
double stepsize,
int numcomps)
{
double w1, w2, wmsedec;
if (qmfbid == 1) {
w1 = (numcomps > 1) ? mct_getnorm(compno) : 1.0;
w2 = dwt_getnorm(level, orient);
} else { /* if (qmfbid == 0) */
w1 = (numcomps > 1) ? mct_getnorm_real(compno) : 1.0;
w2 = dwt_getnorm_real(level, orient);
}
wmsedec = w1 * w2 * stepsize * (1 << bpno);
wmsedec *= wmsedec * nmsedec / 8192.0;
return wmsedec;
}
static 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 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 false;
}
t1->flagssize=flagssize;
}
memset(t1->flags,0,flagssize * sizeof(flag_t));
t1->w=w;
t1->h=h;
return true;
}
/** mod fixed_quality */
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,
opj_tcd_tile_t * tile)
{
double cumwmsedec = 0.0;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
int passno, bpno, passtype;
int nmsedec = 0;
int i, max;
char type = T1_TYPE_MQ;
double tempwmsedec;
max = 0;
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;
bpno = cblk->numbps - 1;
passtype = 2;
mqc_resetstates(mqc);
mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
mqc_init_enc(mqc, cblk->data);
for (passno = 0; bpno >= 0; ++passno) {
opj_tcd_pass_t *pass = &cblk->passes[passno];
int correction = 3;
type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
switch (passtype) {
case 0:
t1_enc_sigpass(t1, bpno, orient, &nmsedec, type, cblksty);
break;
case 1:
t1_enc_refpass(t1, bpno, &nmsedec, type, cblksty);
break;
case 2:
t1_enc_clnpass(t1, bpno, orient, &nmsedec, cblksty);
/* code switch SEGMARK (i.e. SEGSYM) */
if (cblksty & J2K_CCP_CBLKSTY_SEGSYM)
mqc_segmark_enc(mqc);
break;
}
/* fixed_quality */
tempwmsedec = t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
cumwmsedec += tempwmsedec;
tile->distotile += tempwmsedec;
/* Code switch "RESTART" (i.e. TERMALL) */
if ((cblksty & J2K_CCP_CBLKSTY_TERMALL) && !((passtype == 2) && (bpno - 1 < 0))) {
if (type == T1_TYPE_RAW) {
mqc_flush(mqc);
correction = 1;
/* correction = mqc_bypass_flush_enc(); */
} else { /* correction = mqc_restart_enc(); */
mqc_flush(mqc);
correction = 1;
}
pass->term = 1;
} else {
if (((bpno < (cblk->numbps - 4) && (passtype > 0))
|| ((bpno == (cblk->numbps - 4)) && (passtype == 2))) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) {
if (type == T1_TYPE_RAW) {
mqc_flush(mqc);
correction = 1;
/* correction = mqc_bypass_flush_enc(); */
} else { /* correction = mqc_restart_enc(); */
mqc_flush(mqc);
correction = 1;
}
pass->term = 1;
} else {
pass->term = 0;
}
}
if (++passtype == 3) {
passtype = 0;
bpno--;
}
if (pass->term && bpno > 0) {
type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
if (type == T1_TYPE_RAW)
mqc_bypass_init_enc(mqc);
else
mqc_restart_init_enc(mqc);
}
pass->distortiondec = cumwmsedec;
pass->rate = mqc_numbytes(mqc) + correction; /* FIXME */
/* Code-switch "RESET" */
if (cblksty & J2K_CCP_CBLKSTY_RESET)
mqc_reset_enc(mqc);
}
/* Code switch "ERTERM" (i.e. PTERM) */
if (cblksty & J2K_CCP_CBLKSTY_PTERM)
mqc_erterm_enc(mqc);
else /* Default coding */ if (!(cblksty & J2K_CCP_CBLKSTY_LAZY))
mqc_flush(mqc);
cblk->totalpasses = passno;
for (passno = 0; passno<cblk->totalpasses; passno++) {
opj_tcd_pass_t *pass = &cblk->passes[passno];
if (pass->rate > mqc_numbytes(mqc))
pass->rate = mqc_numbytes(mqc);
/*Preventing generation of FF as last data byte of a pass*/
if((pass->rate>1) && (cblk->data[pass->rate - 1] == 0xFF)){
pass->rate--;
}
pass->len = pass->rate - (passno == 0 ? 0 : cblk->passes[passno - 1].rate);
}
}
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 */
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->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->dataindex, seg->len);
} else {
mqc_init_dec(mqc, (*seg->data) + seg->dataindex, seg->len);
}
for (passno = 0; passno < seg->numpasses; ++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--;
}
}
}
}
/* ----------------------------------------------------------------------- */
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;
t1->cinfo = cinfo;
/* create MQC and RAW handles */
t1->mqc = mqc_create();
t1->raw = raw_create();
t1->data=NULL;
t1->flags=NULL;
t1->datasize=0;
t1->flagssize=0;
return t1;
}
void t1_destroy(opj_t1_t *t1) {
if(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)
{
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];
opj_tccp_t* tccp = &tcp->tccps[compno];
int tile_w = tilec->x1 - tilec->x0;
for (resno = 0; resno < tilec->numresolutions; ++resno) {
opj_tcd_resolution_t *res = &tilec->resolutions[resno];
for (bandno = 0; bandno < res->numbands; ++bandno) {
opj_tcd_band_t* restrict band = &res->bands[bandno];
for (precno = 0; precno < res->pw * res->ph; ++precno) {
opj_tcd_precinct_t *prc = &band->precincts[precno];
for (cblkno = 0; cblkno < prc->cw * prc->ch; ++cblkno) {
opj_tcd_cblk_enc_t* cblk = &prc->cblks.enc[cblkno];
int* restrict datap;
int* restrict tiledp;
int cblk_w;
int cblk_h;
int i, j;
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;
}
if (band->bandno & 2) {
opj_tcd_resolution_t *pres = &tilec->resolutions[resno - 1];
y += pres->y1 - pres->y0;
}
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 (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(
tmp,
8192 * 8192 / ((int) floor(band->stepsize * 8192))) >> (11 - T1_NMSEDEC_FRACBITS);
}
}
}
t1_encode_cblk(
t1,
cblk,
band->bandno,
compno,
tilec->numresolutions - 1 - resno,
tccp->qmfbid,
band->stepsize,
tccp->cblksty,
tile->numcomps,
tile);
} /* cblkno */
} /* precno */
} /* bandno */
} /* resno */
} /* compno */
}
void t1_decode_cblks(
opj_t1_t* t1,
opj_tcd_tilecomp_t* tilec,
opj_tccp_t* tccp)
{
int resno, bandno, precno, cblkno;
int tile_w = tilec->x1 - tilec->x0;
for (resno = 0; resno < tilec->numresolutions; ++resno) {
opj_tcd_resolution_t* res = &tilec->resolutions[resno];
for (bandno = 0; bandno < res->numbands; ++bandno) {
opj_tcd_band_t* restrict band = &res->bands[bandno];
for (precno = 0; precno < res->pw * res->ph; ++precno) {
opj_tcd_precinct_t* precinct = &band->precincts[precno];
for (cblkno = 0; cblkno < precinct->cw * precinct->ch; ++cblkno) {
opj_tcd_cblk_dec_t* cblk = &precinct->cblks.dec[cblkno];
int* restrict datap;
void* restrict tiledp;
int cblk_w, cblk_h;
int x, y;
int i, j;
t1_decode_cblk(
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_t* pres = &tilec->resolutions[resno - 1];
x += pres->x1 - pres->x0;
}
if (band->bandno & 2) {
opj_tcd_resolution_t* pres = &tilec->resolutions[resno - 1];
y += pres->y1 - pres->y0;
}
datap=t1->data;
cblk_w = t1->w;
cblk_h = t1->h;
if (tccp->roishift) {
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;
}
}
}
}
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) {
int tmp = datap[(j * cblk_w) + i];
((int*)tiledp)[(j * tile_w) + i] = tmp / 2;
}
}
} 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;
}
}
}
opj_free(cblk->data);
opj_free(cblk->segs);
} /* cblkno */
opj_free(precinct->cblks.dec);
} /* precno */
} /* bandno */
} /* resno */
}
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