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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
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "opj_includes.h"
/** @defgroup T1 T1 - Implementation of the tier-1 coding */
/*@{*/
/** @name Local static functions */
/*@{*/
static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient);
static int t1_getctxno_sc(opj_t1_t *t1, int f);
static int t1_getctxno_mag(opj_t1_t *t1, int f);
static int t1_getspb(opj_t1_t *t1, int f);
static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos);
static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos);
static void t1_updateflags(int *fp, int s);
/**
Encode significant pass
*/
static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc);
/**
Decode significant pass
*/
static void t1_dec_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc);
/**
Encode significant pass
*/
static void t1_enc_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, char type, int cblksty);
/**
Decode significant pass
*/
static void t1_dec_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, char type, int cblksty);
/**
Encode refinement pass
*/
static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc);
/**
Decode refinement pass
*/
static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc);
/**
Encode refinement pass
*/
static void t1_enc_refpass(opj_t1_t *t1, int w, int h, int bpno, int *nmsedec, char type, int cblksty);
/**
Decode refinement pass
*/
static void t1_dec_refpass(opj_t1_t *t1, int w, int h, int bpno, char type, int cblksty);
/**
Encode clean-up pass
*/
static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc);
/**
Decode clean-up pass
*/
static void t1_dec_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc);
/**
Encode clean-up pass
*/
static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, int cblksty);
/**
Decode clean-up pass
*/
static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int cblksty);
static double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps);
/**
Encode 1 code-block
@param t1 T1 handle
@param cblk Code-block coding parameters
@param orient
@param compno Component number
@param level
@param qmfbid
@param stepsize
@param cblksty Code-block style
@param numcomps
@param tile
*/
static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile);
/**
Decode 1 code-block
@param t1 T1 handle
@param cblk Code-block coding parameters
@param orient
@param roishift Region of interest shifting value
@param cblksty Code-block style
*/
static void t1_decode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int roishift, int cblksty);
static int t1_init_ctxno_zc(int f, int orient);
static int t1_init_ctxno_sc(int f);
static int t1_init_ctxno_mag(int f);
static int t1_init_spb(int f);
/**
Initialize the look-up tables of the Tier-1 coder/decoder
@param t1 T1 handle
*/
static void t1_init_luts(opj_t1_t *t1);
/*@}*/
/*@}*/
/* ----------------------------------------------------------------------- */
static int t1_getctxno_zc(opj_t1_t *t1, int f, int orient) {
return t1->lut_ctxno_zc[(orient << 8) | (f & T1_SIG_OTH)];
}
static int t1_getctxno_sc(opj_t1_t *t1, int f) {
return t1->lut_ctxno_sc[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}
static int t1_getctxno_mag(opj_t1_t *t1, int f) {
return t1->lut_ctxno_mag[(f & T1_SIG_OTH) | (((f & T1_REFINE) != 0) << 11)];
}
static int t1_getspb(opj_t1_t *t1, int f) {
return t1->lut_spb[(f & (T1_SIG_PRIM | T1_SGN)) >> 4];
}
static int t1_getnmsedec_sig(opj_t1_t *t1, int x, int bitpos) {
if (bitpos > T1_NMSEDEC_FRACBITS) {
return t1->lut_nmsedec_sig[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
}
return t1->lut_nmsedec_sig0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}
static int t1_getnmsedec_ref(opj_t1_t *t1, int x, int bitpos) {
if (bitpos > T1_NMSEDEC_FRACBITS) {
return t1->lut_nmsedec_ref[(x >> (bitpos - T1_NMSEDEC_FRACBITS)) & ((1 << T1_NMSEDEC_BITS) - 1)];
}
return t1->lut_nmsedec_ref0[x & ((1 << T1_NMSEDEC_BITS) - 1)];
}
static void t1_updateflags(int *fp, int s) {
int *np = fp - (T1_MAXCBLKW + 2);
int *sp = fp + (T1_MAXCBLKW + 2);
np[-1] |= T1_SIG_SE;
np[1] |= T1_SIG_SW;
sp[-1] |= T1_SIG_NE;
sp[1] |= T1_SIG_NW;
*np |= T1_SIG_S;
*sp |= T1_SIG_N;
fp[-1] |= T1_SIG_E;
fp[1] |= T1_SIG_W;
if (s) {
*np |= T1_SGN_S;
*sp |= T1_SGN_N;
fp[-1] |= T1_SGN_E;
fp[1] |= T1_SGN_W;
}
}
static void t1_enc_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, char type, int vsc) {
int v, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
v = int_abs(*dp) & one ? 1 : 0;
if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient)); /* ESSAI */
mqc_bypass_enc(mqc, v);
} else {
mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
mqc_encode(mqc, v);
}
if (v) {
v = *dp < 0 ? 1 : 0;
*nmsedec += t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag)); /* ESSAI */
mqc_bypass_enc(mqc, v);
} else {
mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
mqc_encode(mqc, v ^ t1_getspb(t1, flag));
}
t1_updateflags(fp, v);
*fp |= T1_SIG;
}
*fp |= T1_VISIT;
}
}
static void t1_dec_sigpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, char type, int vsc) {
int v, flag;
opj_raw_t *raw = t1->raw; /* RAW component */
opj_mqc_t *mqc = t1->mqc; /* MQC component */
flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
if ((flag & T1_SIG_OTH) && !(flag & (T1_SIG | T1_VISIT))) {
if (type == T1_TYPE_RAW) {
if (raw_decode(raw)) {
v = raw_decode(raw); /* ESSAI */
*dp = v ? -oneplushalf : oneplushalf;
t1_updateflags(fp, v);
*fp |= T1_SIG;
}
} else {
mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
if (mqc_decode(mqc)) {
mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
*dp = v ? -oneplushalf : oneplushalf;
t1_updateflags(fp, v);
*fp |= T1_SIG;
}
}
*fp |= T1_VISIT;
}
} /* VSC and BYPASS by Antonin */
static void t1_enc_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, char type, int cblksty) {
int i, j, k, one, vsc;
*nmsedec = 0;
one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
for (k = 0; k < h; k += 4) {
for (i = 0; i < w; i++) {
for (j = k; j < k + 4 && j < h; j++) {
vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
t1_enc_sigpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, bpno, one, nmsedec, type, vsc);
}
}
}
}
static void t1_dec_sigpass(opj_t1_t *t1, int w, int h, int bpno, int orient, char type, int cblksty) {
int i, j, k, one, half, oneplushalf, vsc;
one = 1 << bpno;
half = one >> 1;
oneplushalf = one | half;
for (k = 0; k < h; k += 4) {
for (i = 0; i < w; i++) {
for (j = k; j < k + 4 && j < h; j++) {
vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
t1_dec_sigpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, oneplushalf, type, vsc);
}
}
}
} /* VSC and BYPASS by Antonin */
static void t1_enc_refpass_step(opj_t1_t *t1, int *fp, int *dp, int bpno, int one, int *nmsedec, char type, int vsc) {
int v, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
*nmsedec += t1_getnmsedec_ref(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
v = int_abs(*dp) & one ? 1 : 0;
if (type == T1_TYPE_RAW) { /* BYPASS/LAZY MODE */
mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag)); /* ESSAI */
mqc_bypass_enc(mqc, v);
} else {
mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
mqc_encode(mqc, v);
}
*fp |= T1_REFINE;
}
}
static void t1_dec_refpass_step(opj_t1_t *t1, int *fp, int *dp, int poshalf, int neghalf, char type, int vsc) {
int v, t, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
opj_raw_t *raw = t1->raw; /* RAW component */
flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
if ((flag & (T1_SIG | T1_VISIT)) == T1_SIG) {
if (type == T1_TYPE_RAW) {
mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag)); /* ESSAI */
v = raw_decode(raw);
} else {
mqc_setcurctx(mqc, t1_getctxno_mag(t1, flag));
v = mqc_decode(mqc);
}
t = v ? poshalf : neghalf;
*dp += *dp < 0 ? -t : t;
*fp |= T1_REFINE;
}
} /* VSC and BYPASS by Antonin */
static void t1_enc_refpass(opj_t1_t *t1, int w, int h, int bpno, int *nmsedec, char type, int cblksty) {
int i, j, k, one, vsc;
*nmsedec = 0;
one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
for (k = 0; k < h; k += 4) {
for (i = 0; i < w; i++) {
for (j = k; j < k + 4 && j < h; j++) {
vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
t1_enc_refpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], bpno, one, nmsedec, type, vsc);
}
}
}
}
static void t1_dec_refpass(opj_t1_t *t1, int w, int h, int bpno, char type, int cblksty) {
int i, j, k, one, poshalf, neghalf;
int vsc;
one = 1 << bpno;
poshalf = one >> 1;
neghalf = bpno > 0 ? -poshalf : -1;
for (k = 0; k < h; k += 4) {
for (i = 0; i < w; i++) {
for (j = k; j < k + 4 && j < h; j++) {
vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
t1_dec_refpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], poshalf, neghalf, type, vsc);
}
}
}
} /* VSC and BYPASS by Antonin */
static void t1_enc_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int bpno, int one, int *nmsedec, int partial, int vsc) {
int v, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
if (partial) {
goto LABEL_PARTIAL;
}
if (!(*fp & (T1_SIG | T1_VISIT))) {
mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
v = int_abs(*dp) & one ? 1 : 0;
mqc_encode(mqc, v);
if (v) {
LABEL_PARTIAL:
*nmsedec += t1_getnmsedec_sig(t1, int_abs(*dp), bpno + T1_NMSEDEC_FRACBITS);
mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
v = *dp < 0 ? 1 : 0;
mqc_encode(mqc, v ^ t1_getspb(t1, flag));
t1_updateflags(fp, v);
*fp |= T1_SIG;
}
}
*fp &= ~T1_VISIT;
}
static void t1_dec_clnpass_step(opj_t1_t *t1, int *fp, int *dp, int orient, int oneplushalf, int partial, int vsc) {
int v, flag;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
flag = vsc ? ((*fp) & (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) : (*fp);
if (partial) {
goto LABEL_PARTIAL;
}
if (!(flag & (T1_SIG | T1_VISIT))) {
mqc_setcurctx(mqc, t1_getctxno_zc(t1, flag, orient));
if (mqc_decode(mqc)) {
LABEL_PARTIAL:
mqc_setcurctx(mqc, t1_getctxno_sc(t1, flag));
v = mqc_decode(mqc) ^ t1_getspb(t1, flag);
*dp = v ? -oneplushalf : oneplushalf;
t1_updateflags(fp, v);
*fp |= T1_SIG;
}
}
*fp &= ~T1_VISIT;
} /* VSC and BYPASS by Antonin */
static void t1_enc_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int *nmsedec, int cblksty) {
int i, j, k, one, agg, runlen, vsc;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
*nmsedec = 0;
one = 1 << (bpno + T1_NMSEDEC_FRACBITS);
for (k = 0; k < h; k += 4) {
for (i = 0; i < w; i++) {
if (k + 3 < h) {
if (cblksty & J2K_CCP_CBLKSTY_VSC) {
agg = !(t1->flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 1][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 2][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| (t1->flags[1 + k + 3][1 + i]
& (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
} else {
agg = !(t1->flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 1][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 2][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 3][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH));
}
} else {
agg = 0;
}
if (agg) {
for (runlen = 0; runlen < 4; runlen++) {
if (int_abs(t1->data[k + runlen][i]) & one)
break;
}
mqc_setcurctx(mqc, T1_CTXNO_AGG);
mqc_encode(mqc, runlen != 4);
if (runlen == 4) {
continue;
}
mqc_setcurctx(mqc, T1_CTXNO_UNI);
mqc_encode(mqc, runlen >> 1);
mqc_encode(mqc, runlen & 1);
} else {
runlen = 0;
}
for (j = k + runlen; j < k + 4 && j < h; j++) {
vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
t1_enc_clnpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, bpno, one, nmsedec, agg && (j == k + runlen), vsc);
}
}
}
}
static void t1_dec_clnpass(opj_t1_t *t1, int w, int h, int bpno, int orient, int cblksty) {
int i, j, k, one, half, oneplushalf, agg, runlen, vsc;
int segsym = cblksty & J2K_CCP_CBLKSTY_SEGSYM;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
one = 1 << bpno;
half = one >> 1;
oneplushalf = one | half;
for (k = 0; k < h; k += 4) {
for (i = 0; i < w; i++) {
if (k + 3 < h) {
if (cblksty & J2K_CCP_CBLKSTY_VSC) {
agg = !(t1->flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 1][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 2][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| (t1->flags[1 + k + 3][1 + i]
& (~(T1_SIG_S | T1_SIG_SE | T1_SIG_SW | T1_SGN_S))) & (T1_SIG | T1_VISIT | T1_SIG_OTH));
} else {
agg = !(t1->flags[1 + k][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 1][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 2][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH)
|| t1->flags[1 + k + 3][1 + i] & (T1_SIG | T1_VISIT | T1_SIG_OTH));
}
} else {
agg = 0;
}
if (agg) {
mqc_setcurctx(mqc, T1_CTXNO_AGG);
if (!mqc_decode(mqc)) {
continue;
}
mqc_setcurctx(mqc, T1_CTXNO_UNI);
runlen = mqc_decode(mqc);
runlen = (runlen << 1) | mqc_decode(mqc);
} else {
runlen = 0;
}
for (j = k + runlen; j < k + 4 && j < h; j++) {
vsc = ((cblksty & J2K_CCP_CBLKSTY_VSC) && (j == k + 3 || j == h - 1)) ? 1 : 0;
t1_dec_clnpass_step(t1, &t1->flags[1 + j][1 + i], &t1->data[j][i], orient, oneplushalf, agg && (j == k + runlen), vsc);
}
}
}
if (segsym) {
int v = 0;
mqc_setcurctx(mqc, T1_CTXNO_UNI);
v = mqc_decode(mqc);
v = (v << 1) | mqc_decode(mqc);
v = (v << 1) | mqc_decode(mqc);
v = (v << 1) | mqc_decode(mqc);
/*
if (v!=0xa) {
opj_event_msg(t1->cinfo, EVT_WARNING, "Bad segmentation symbol %x\n", v);
}
*/
}
} /* VSC and BYPASS by Antonin */
/** mod fixed_quality */
static double t1_getwmsedec(int nmsedec, int compno, int level, int orient, int bpno, int qmfbid, double stepsize, int numcomps) {
double w1, w2, wmsedec;
if (qmfbid == 1) {
w1 = (numcomps > 1) ? mct_getnorm(compno) : 1;
w2 = dwt_getnorm(level, orient);
} else { /* if (qmfbid == 0) */
w1 = (numcomps > 1) ? mct_getnorm_real(compno) : 1;
w2 = dwt_getnorm_real(level, orient);
}
wmsedec = w1 * w2 * stepsize * (1 << bpno);
wmsedec *= wmsedec * nmsedec / 8192.0;
return wmsedec;
}
/** mod fixed_quality */
static void t1_encode_cblk(opj_t1_t *t1, opj_tcd_cblk_t * cblk, int orient, int compno, int level, int qmfbid, double stepsize, int cblksty, int numcomps, opj_tcd_tile_t * tile) {
int i, j;
int w, h;
int passno;
int bpno, passtype;
int max;
int nmsedec = 0;
double cumwmsedec = 0;
char type = T1_TYPE_MQ;
opj_mqc_t *mqc = t1->mqc; /* MQC component */
w = cblk->x1 - cblk->x0;
h = cblk->y1 - cblk->y0;
max = 0;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
max = int_max(max, int_abs(t1->data[j][i]));
}
}
cblk->numbps = max ? (int_floorlog2(max) + 1) - T1_NMSEDEC_FRACBITS : 0;
/* Changed by Dmitry Kolyadin */
for (i = 0; i <= w; i++) {
for (j = 0; j <= h; j++) {
t1->flags[j][i] = 0;
}
}
bpno = cblk->numbps - 1;
passtype = 2;
mqc_resetstates(mqc);
mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
mqc_init_enc(mqc, cblk->data);
for (passno = 0; bpno >= 0; passno++) {
opj_tcd_pass_t *pass = &cblk->passes[passno];
int correction = 3;
type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
switch (passtype) {
case 0:
t1_enc_sigpass(t1, w, h, bpno, orient, &nmsedec, type, cblksty);
break;
case 1:
t1_enc_refpass(t1, w, h, bpno, &nmsedec, type, cblksty);
break;
case 2:
t1_enc_clnpass(t1, w, h, bpno, orient, &nmsedec, cblksty);
/* code switch SEGMARK (i.e. SEGSYM) */
if (cblksty & J2K_CCP_CBLKSTY_SEGSYM)
mqc_segmark_enc(mqc);
break;
}
/* fixed_quality */
cumwmsedec += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
tile->distotile += t1_getwmsedec(nmsedec, compno, level, orient, bpno, qmfbid, stepsize, numcomps);
/* Code switch "RESTART" (i.e. TERMALL) */
if ((cblksty & J2K_CCP_CBLKSTY_TERMALL) && !((passtype == 2) && (bpno - 1 < 0))) {
if (type == T1_TYPE_RAW) {
mqc_flush(mqc);
correction = 1;
/* correction = mqc_bypass_flush_enc(); */
} else { /* correction = mqc_restart_enc(); */
mqc_flush(mqc);
correction = 1;
}
pass->term = 1;
} else {
if (((bpno < (cblk->numbps - 4) && (passtype > 0))
|| ((bpno == (cblk->numbps - 4)) && (passtype == 2))) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) {
if (type == T1_TYPE_RAW) {
mqc_flush(mqc);
correction = 1;
/* correction = mqc_bypass_flush_enc(); */
} else { /* correction = mqc_restart_enc(); */
mqc_flush(mqc);
correction = 1;
}
pass->term = 1;
} else {
pass->term = 0;
}
}
if (++passtype == 3) {
passtype = 0;
bpno--;
}
if (pass->term && bpno > 0) {
type = ((bpno < (cblk->numbps - 4)) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
if (type == T1_TYPE_RAW)
mqc_bypass_init_enc(mqc);
else
mqc_restart_init_enc(mqc);
}
pass->distortiondec = cumwmsedec;
pass->rate = mqc_numbytes(mqc) + correction; /* FIXME */
/* 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_t * cblk, int orient, int roishift, int cblksty) {
int i, j, w, h;
int bpno, passtype;
int segno, passno;
char type = T1_TYPE_MQ; /* BYPASS mode */
opj_raw_t *raw = t1->raw; /* RAW component */
opj_mqc_t *mqc = t1->mqc; /* MQC component */
w = cblk->x1 - cblk->x0;
h = cblk->y1 - cblk->y0;
/* Changed by Dmitry Kolyadin */
for (j = 0; j <= h; j++) {
for (i = 0; i <= w; i++) {
t1->flags[j][i] = 0;
}
}
/* Changed by Dmitry Kolyadin */
for (i = 0; i < w; i++) {
for (j = 0; j < h; j++){
t1->data[j][i] = 0;
}
}
bpno = roishift + cblk->numbps - 1;
passtype = 2;
mqc_resetstates(mqc);
mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
for (segno = 0; segno < cblk->numsegs; segno++) {
opj_tcd_seg_t *seg = &cblk->segs[segno];
/* BYPASS mode */
type = ((bpno <= (cblk->numbps - 1) - 4) && (passtype < 2) && (cblksty & J2K_CCP_CBLKSTY_LAZY)) ? T1_TYPE_RAW : T1_TYPE_MQ;
if (type == T1_TYPE_RAW) {
raw_init_dec(raw, seg->data, seg->len);
} else {
mqc_init_dec(mqc, seg->data, seg->len);
}
for (passno = 0; passno < seg->numpasses; passno++) {
switch (passtype) {
case 0:
t1_dec_sigpass(t1, w, h, bpno+1, orient, type, cblksty);
break;
case 1:
t1_dec_refpass(t1, w, h, bpno+1, type, cblksty);
break;
case 2:
t1_dec_clnpass(t1, w, h, bpno+1, orient, cblksty);
break;
}
if ((cblksty & J2K_CCP_CBLKSTY_RESET) && type == T1_TYPE_MQ) {
mqc_resetstates(mqc);
mqc_setstate(mqc, T1_CTXNO_UNI, 0, 46);
mqc_setstate(mqc, T1_CTXNO_AGG, 0, 3);
mqc_setstate(mqc, T1_CTXNO_ZC, 0, 4);
}
if (++passtype == 3) {
passtype = 0;
bpno--;
}
}
}
}
static int t1_init_ctxno_zc(int f, int orient) {
int h, v, d, n, t, hv;
n = 0;
h = ((f & T1_SIG_W) != 0) + ((f & T1_SIG_E) != 0);
v = ((f & T1_SIG_N) != 0) + ((f & T1_SIG_S) != 0);
d = ((f & T1_SIG_NW) != 0) + ((f & T1_SIG_NE) != 0) + ((f & T1_SIG_SE) != 0) + ((f & T1_SIG_SW) != 0);
switch (orient) {
case 2:
t = h;
h = v;
v = t;
case 0:
case 1:
if (!h) {
if (!v) {
if (!d)
n = 0;
else if (d == 1)
n = 1;
else
n = 2;
} else if (v == 1) {
n = 3;
} else {
n = 4;
}
} else if (h == 1) {
if (!v) {
if (!d)
n = 5;
else
n = 6;
} else {
n = 7;
}
} else
n = 8;
break;
case 3:
hv = h + v;
if (!d) {
if (!hv) {
n = 0;
} else if (hv == 1) {
n = 1;
} else {
n = 2;
}
} else if (d == 1) {
if (!hv) {
n = 3;
} else if (hv == 1) {
n = 4;
} else {
n = 5;
}
} else if (d == 2) {
if (!hv) {
n = 6;
} else {
n = 7;
}
} else {
n = 8;
}
break;
}
return (T1_CTXNO_ZC + n);
}
static int t1_init_ctxno_sc(int f) {
int hc, vc, n;
n = 0;
hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
(T1_SIG_E | T1_SGN_E)) +
((f & (T1_SIG_W | T1_SGN_W)) ==
(T1_SIG_W | T1_SGN_W)), 1);
vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
(T1_SIG_N | T1_SGN_N)) +
((f & (T1_SIG_S | T1_SGN_S)) ==
(T1_SIG_S | T1_SGN_S)), 1);
if (hc < 0) {
hc = -hc;
vc = -vc;
}
if (!hc) {
if (vc == -1)
n = 1;
else if (!vc)
n = 0;
else
n = 1;
} else if (hc == 1) {
if (vc == -1)
n = 2;
else if (!vc)
n = 3;
else
n = 4;
}
return (T1_CTXNO_SC + n);
}
static int t1_init_ctxno_mag(int f) {
int n;
if (!(f & T1_REFINE))
n = (f & (T1_SIG_OTH)) ? 1 : 0;
else
n = 2;
return (T1_CTXNO_MAG + n);
}
static int t1_init_spb(int f) {
int hc, vc, n;
hc = int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
T1_SIG_E) + ((f & (T1_SIG_W | T1_SGN_W)) == T1_SIG_W),
1) - int_min(((f & (T1_SIG_E | T1_SGN_E)) ==
(T1_SIG_E | T1_SGN_E)) +
((f & (T1_SIG_W | T1_SGN_W)) ==
(T1_SIG_W | T1_SGN_W)), 1);
vc = int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
T1_SIG_N) + ((f & (T1_SIG_S | T1_SGN_S)) == T1_SIG_S),
1) - int_min(((f & (T1_SIG_N | T1_SGN_N)) ==
(T1_SIG_N | T1_SGN_N)) +
((f & (T1_SIG_S | T1_SGN_S)) ==
(T1_SIG_S | T1_SGN_S)), 1);
if (!hc && !vc)
n = 0;
else
n = (!(hc > 0 || (!hc && vc > 0)));
return n;
}
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;
}
void t1_destroy(opj_t1_t *t1) {
if(t1) {
/* destroy MQC and RAW handles */
mqc_destroy(t1->mqc);
raw_destroy(t1->raw);
opj_free(t1);
}
}
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 (resno = 0; resno < tilec->numresolutions; resno++) {
opj_tcd_resolution_t *res = &tilec->resolutions[resno];
for (bandno = 0; bandno < res->numbands; bandno++) {
opj_tcd_band_t *band = &res->bands[bandno];
for (precno = 0; precno < res->pw * res->ph; precno++) {
opj_tcd_precinct_t *prc = &band->precincts[precno];
for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
int x, y, 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;
}
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;
}
}
} else { /* if (tcp->tccps[compno].qmfbid == 0) */
for (j = 0; j < cblk->y1 - cblk->y0; j++) {
for (i = 0; i < cblk->x1 - cblk->x0; i++) {
t1->data[j][i] =
fix_mul(
tilec->data[x + i + (y + j) * w],
8192 * 8192 / ((int) floor(band->stepsize * 8192))) >> (13 - T1_NMSEDEC_FRACBITS);
}
}
}
orient = band->bandno; /* FIXME */
if (orient == 2) {
orient = 1;
} else if (orient == 1) {
orient = 2;
}
t1_encode_cblk(t1, cblk, orient, compno, tilec->numresolutions - 1 - resno, tcp->tccps[compno].qmfbid, band->stepsize, tcp->tccps[compno].cblksty, tile->numcomps, tile);
} /* cblkno */
} /* precno */
} /* bandno */
} /* resno */
} /* compno */
}
void t1_decode_cblks(opj_t1_t *t1, opj_tcd_tile_t *tile, opj_tcp_t *tcp) {
int compno, resno, bandno, precno, cblkno;
for (compno = 0; compno < tile->numcomps; compno++) {
opj_tcd_tilecomp_t *tilec = &tile->comps[compno];
for (resno = 0; resno < tilec->numresolutions; resno++) {
opj_tcd_resolution_t *res = &tilec->resolutions[resno];
for (bandno = 0; bandno < res->numbands; bandno++) {
opj_tcd_band_t *band = &res->bands[bandno];
for (precno = 0; precno < res->pw * res->ph; precno++) {
opj_tcd_precinct_t *prc = &band->precincts[precno];
for (cblkno = 0; cblkno < prc->cw * prc->ch; cblkno++) {
int x, y, w, i, j, orient;
opj_tcd_cblk_t *cblk = &prc->cblks[cblkno];
orient = band->bandno; /* FIXME */
if (orient == 2) {
orient = 1;
} else if (orient == 1) {
orient = 2;
}
t1_decode_cblk(t1, cblk, orient, tcp->tccps[compno].roishift, tcp->tccps[compno].cblksty);
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;
}
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;
}
}
}
}
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;
}
}
} 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);
}
}
}
}
} /* cblkno */
} /* precno */
} /* bandno */
} /* resno */
} /* compno */
}
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