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opencv/3rdparty/libjasper/jpc_t1enc.c
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2012-10-17 15:32:23 +04:00

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/*
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2002 Michael David Adams.
* All rights reserved.
*/
/* __START_OF_JASPER_LICENSE__
*
* JasPer License Version 2.0
*
* Copyright (c) 2001-2006 Michael David Adams
* Copyright (c) 1999-2000 Image Power, Inc.
* Copyright (c) 1999-2000 The University of British Columbia
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person (the
* "User") obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* 1. The above copyright notices and this permission notice (which
* includes the disclaimer below) shall be included in all copies or
* substantial portions of the Software.
*
* 2. The name of a copyright holder shall not be used to endorse or
* promote products derived from the Software without specific prior
* written permission.
*
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
*
* __END_OF_JASPER_LICENSE__
*/
/*
* Tier 1 Encoder
*
* $Id: jpc_t1enc.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
*/
/******************************************************************************\
* Includes.
\******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "jasper/jas_fix.h"
#include "jasper/jas_malloc.h"
#include "jasper/jas_math.h"
#include "jpc_t1enc.h"
#include "jpc_t1cod.h"
#include "jpc_enc.h"
#include "jpc_cod.h"
#include "jpc_math.h"
static int jpc_encsigpass(jpc_mqenc_t *mqenc, int bitpos, int orient, int,
jas_matrix_t *flags, jas_matrix_t *data, int term, long *nmsedec);
static int jpc_encrefpass(jpc_mqenc_t *mqenc, int bitpos, int, jas_matrix_t *flags,
jas_matrix_t *data, int term, long *nmsedec);
static int jpc_encclnpass(jpc_mqenc_t *mqenc, int bitpos, int orient, int,
int, jas_matrix_t *flags, jas_matrix_t *data, int term, long *nmsedec);
static int jpc_encrawsigpass(jpc_bitstream_t *out, int bitpos, int,
jas_matrix_t *flags, jas_matrix_t *data, int term, long *nmsedec);
static int jpc_encrawrefpass(jpc_bitstream_t *out, int bitpos, int,
jas_matrix_t *flags, jas_matrix_t *data, int term, long *nmsedec);
/******************************************************************************\
* Code for encoding code blocks.
\******************************************************************************/
/* Encode all of the code blocks associated with the current tile. */
int jpc_enc_enccblks(jpc_enc_t *enc)
{
jpc_enc_tcmpt_t *tcmpt;
jpc_enc_tcmpt_t *endcomps;
jpc_enc_rlvl_t *lvl;
jpc_enc_rlvl_t *endlvls;
jpc_enc_band_t *band;
jpc_enc_band_t *endbands;
jpc_enc_cblk_t *cblk;
jpc_enc_cblk_t *endcblks;
int i;
int j;
int mx;
int bmx;
int v;
jpc_enc_tile_t *tile;
uint_fast32_t prcno;
jpc_enc_prc_t *prc;
tile = enc->curtile;
endcomps = &tile->tcmpts[tile->numtcmpts];
for (tcmpt = tile->tcmpts; tcmpt != endcomps; ++tcmpt) {
endlvls = &tcmpt->rlvls[tcmpt->numrlvls];
for (lvl = tcmpt->rlvls; lvl != endlvls; ++lvl) {
if (!lvl->bands) {
continue;
}
endbands = &lvl->bands[lvl->numbands];
for (band = lvl->bands; band != endbands; ++band) {
if (!band->data) {
continue;
}
for (prcno = 0, prc = band->prcs; prcno < lvl->numprcs; ++prcno, ++prc) {
if (!prc->cblks) {
continue;
}
bmx = 0;
endcblks = &prc->cblks[prc->numcblks];
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
mx = 0;
for (i = 0; i < jas_matrix_numrows(cblk->data); ++i) {
for (j = 0; j < jas_matrix_numcols(cblk->data); ++j) {
v = abs(jas_matrix_get(cblk->data, i, j));
if (v > mx) {
mx = v;
}
}
}
if (mx > bmx) {
bmx = mx;
}
cblk->numbps = JAS_MAX(jpc_firstone(mx) + 1 - JPC_NUMEXTRABITS, 0);
}
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
cblk->numimsbs = band->numbps - cblk->numbps;
assert(cblk->numimsbs >= 0);
}
for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
if (jpc_enc_enccblk(enc, cblk->stream, tcmpt, band, cblk)) {
return -1;
}
}
}
}
}
}
return 0;
}
int getthebyte(jas_stream_t *in, long off)
{
int c;
long oldpos;
oldpos = jas_stream_tell(in);
assert(oldpos >= 0);
jas_stream_seek(in, off, SEEK_SET);
c = jas_stream_peekc(in);
jas_stream_seek(in, oldpos, SEEK_SET);
return c;
}
/* Encode a single code block. */
int jpc_enc_enccblk(jpc_enc_t *enc, jas_stream_t *out, jpc_enc_tcmpt_t *tcmpt, jpc_enc_band_t *band, jpc_enc_cblk_t *cblk)
{
jpc_enc_pass_t *pass;
jpc_enc_pass_t *endpasses;
int bitpos;
int n;
int adjust;
int ret;
int passtype;
int t;
jpc_bitstream_t *bout;
jpc_enc_pass_t *termpass;
jpc_enc_rlvl_t *rlvl;
int vcausal;
int segsym;
int termmode;
int c;
bout = 0;
rlvl = band->rlvl;
cblk->stream = jas_stream_memopen(0, 0);
assert(cblk->stream);
cblk->mqenc = jpc_mqenc_create(JPC_NUMCTXS, cblk->stream);
assert(cblk->mqenc);
jpc_mqenc_setctxs(cblk->mqenc, JPC_NUMCTXS, jpc_mqctxs);
cblk->numpasses = (cblk->numbps > 0) ? (3 * cblk->numbps - 2) : 0;
if (cblk->numpasses > 0) {
cblk->passes = jas_alloc2(cblk->numpasses, sizeof(jpc_enc_pass_t));
assert(cblk->passes);
} else {
cblk->passes = 0;
}
endpasses = &cblk->passes[cblk->numpasses];
for (pass = cblk->passes; pass != endpasses; ++pass) {
pass->start = 0;
pass->end = 0;
pass->term = JPC_ISTERMINATED(pass - cblk->passes, 0, cblk->numpasses, (tcmpt->cblksty & JPC_COX_TERMALL) != 0, (tcmpt->cblksty & JPC_COX_LAZY) != 0);
pass->type = JPC_SEGTYPE(pass - cblk->passes, 0, (tcmpt->cblksty & JPC_COX_LAZY) != 0);
pass->lyrno = -1;
if (pass == endpasses - 1) {
assert(pass->term == 1);
pass->term = 1;
}
}
cblk->flags = jas_matrix_create(jas_matrix_numrows(cblk->data) + 2,
jas_matrix_numcols(cblk->data) + 2);
assert(cblk->flags);
bitpos = cblk->numbps - 1;
pass = cblk->passes;
n = cblk->numpasses;
while (--n >= 0) {
if (pass->type == JPC_SEG_MQ) {
/* NOP */
} else {
assert(pass->type == JPC_SEG_RAW);
if (!bout) {
bout = jpc_bitstream_sopen(cblk->stream, "w");
assert(bout);
}
}
#if 1
passtype = (pass - cblk->passes + 2) % 3;
#else
passtype = JPC_PASSTYPE(pass - cblk->passes + 2);
#endif
pass->start = jas_stream_tell(cblk->stream);
#if 0
assert(jas_stream_tell(cblk->stream) == jas_stream_getrwcount(cblk->stream));
#endif
assert(bitpos >= 0);
vcausal = (tcmpt->cblksty & JPC_COX_VSC) != 0;
segsym = (tcmpt->cblksty & JPC_COX_SEGSYM) != 0;
if (pass->term) {
termmode = ((tcmpt->cblksty & JPC_COX_PTERM) ?
JPC_MQENC_PTERM : JPC_MQENC_DEFTERM) + 1;
} else {
termmode = 0;
}
switch (passtype) {
case JPC_SIGPASS:
ret = (pass->type == JPC_SEG_MQ) ? jpc_encsigpass(cblk->mqenc,
bitpos, band->orient, vcausal, cblk->flags,
cblk->data, termmode, &pass->nmsedec) :
jpc_encrawsigpass(bout, bitpos, vcausal, cblk->flags,
cblk->data, termmode, &pass->nmsedec);
break;
case JPC_REFPASS:
ret = (pass->type == JPC_SEG_MQ) ? jpc_encrefpass(cblk->mqenc,
bitpos, vcausal, cblk->flags, cblk->data, termmode,
&pass->nmsedec) : jpc_encrawrefpass(bout, bitpos,
vcausal, cblk->flags, cblk->data, termmode,
&pass->nmsedec);
break;
case JPC_CLNPASS:
assert(pass->type == JPC_SEG_MQ);
ret = jpc_encclnpass(cblk->mqenc, bitpos, band->orient,
vcausal, segsym, cblk->flags, cblk->data, termmode,
&pass->nmsedec);
break;
default:
assert(0);
break;
}
if (pass->type == JPC_SEG_MQ) {
if (pass->term) {
jpc_mqenc_init(cblk->mqenc);
}
jpc_mqenc_getstate(cblk->mqenc, &pass->mqencstate);
pass->end = jas_stream_tell(cblk->stream);
if (tcmpt->cblksty & JPC_COX_RESET) {
jpc_mqenc_setctxs(cblk->mqenc, JPC_NUMCTXS, jpc_mqctxs);
}
} else {
if (pass->term) {
if (jpc_bitstream_pending(bout)) {
jpc_bitstream_outalign(bout, 0x2a);
}
jpc_bitstream_close(bout);
bout = 0;
pass->end = jas_stream_tell(cblk->stream);
} else {
pass->end = jas_stream_tell(cblk->stream) +
jpc_bitstream_pending(bout);
/* NOTE - This will not work. need to adjust by # of pending output bytes */
}
}
#if 0
/* XXX - This assertion fails sometimes when various coding modes are used.
This seems to be harmless, but why does it happen at all? */
assert(jas_stream_tell(cblk->stream) == jas_stream_getrwcount(cblk->stream));
#endif
pass->wmsedec = jpc_fixtodbl(band->rlvl->tcmpt->synweight) *
jpc_fixtodbl(band->rlvl->tcmpt->synweight) *
jpc_fixtodbl(band->synweight) *
jpc_fixtodbl(band->synweight) *
jpc_fixtodbl(band->absstepsize) * jpc_fixtodbl(band->absstepsize) *
((double) (1 << bitpos)) * ((double)(1 << bitpos)) *
jpc_fixtodbl(pass->nmsedec);
pass->cumwmsedec = pass->wmsedec;
if (pass != cblk->passes) {
pass->cumwmsedec += pass[-1].cumwmsedec;
}
if (passtype == JPC_CLNPASS) {
--bitpos;
}
++pass;
}
#if 0
dump_passes(cblk->passes, cblk->numpasses, cblk);
#endif
n = 0;
endpasses = &cblk->passes[cblk->numpasses];
for (pass = cblk->passes; pass != endpasses; ++pass) {
if (pass->start < n) {
pass->start = n;
}
if (pass->end < n) {
pass->end = n;
}
if (!pass->term) {
termpass = pass;
while (termpass - pass < cblk->numpasses &&
!termpass->term) {
++termpass;
}
if (pass->type == JPC_SEG_MQ) {
t = (pass->mqencstate.lastbyte == 0xff) ? 1 : 0;
if (pass->mqencstate.ctreg >= 5) {
adjust = 4 + t;
} else {
adjust = 5 + t;
}
pass->end += adjust;
}
if (pass->end > termpass->end) {
pass->end = termpass->end;
}
if ((c = getthebyte(cblk->stream, pass->end - 1)) == EOF) {
abort();
}
if (c == 0xff) {
++pass->end;
}
n = JAS_MAX(n, pass->end);
} else {
n = JAS_MAX(n, pass->end);
}
}
#if 0
dump_passes(cblk->passes, cblk->numpasses, cblk);
#endif
if (bout) {
jpc_bitstream_close(bout);
}
return 0;
}
/******************************************************************************\
* Code for significance pass.
\******************************************************************************/
#define sigpass_step(fp, frowstep, dp, bitpos, one, nmsedec, orient, mqenc, vcausalflag) \
{ \
int f; \
int v; \
f = *(fp); \
if ((f & JPC_OTHSIGMSK) && !(f & (JPC_SIG | JPC_VISIT))) { \
v = (abs(*(dp)) & (one)) ? 1 : 0; \
jpc_mqenc_setcurctx(mqenc, JPC_GETZCCTXNO(f, (orient))); \
jpc_mqenc_putbit(mqenc, v); \
if (v) { \
*(nmsedec) += JPC_GETSIGNMSEDEC(abs(*(dp)), (bitpos) + JPC_NUMEXTRABITS); \
v = ((*(dp) < 0) ? 1 : 0); \
jpc_mqenc_setcurctx(mqenc, JPC_GETSCCTXNO(f)); \
jpc_mqenc_putbit(mqenc, v ^ JPC_GETSPB(f)); \
JPC_UPDATEFLAGS4(fp, frowstep, v, vcausalflag); \
*(fp) |= JPC_SIG; \
} \
*(fp) |= JPC_VISIT; \
} \
}
static int jpc_encsigpass(jpc_mqenc_t *mqenc, int bitpos, int orient, int vcausalflag,
jas_matrix_t *flags, jas_matrix_t *data, int term, long *nmsedec)
{
int i;
int j;
int one;
int vscanlen;
int width;
int height;
int frowstep;
int drowstep;
int fstripestep;
int dstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *dstripestart;
jpc_fix_t *fp;
jpc_fix_t *dp;
jpc_fix_t *fvscanstart;
jpc_fix_t *dvscanstart;
int k;
*nmsedec = 0;
width = jas_matrix_numcols(data);
height = jas_matrix_numrows(data);
frowstep = jas_matrix_rowstep(flags);
drowstep = jas_matrix_rowstep(data);
fstripestep = frowstep << 2;
dstripestep = drowstep << 2;
one = 1 << (bitpos + JPC_NUMEXTRABITS);
fstripestart = jas_matrix_getref(flags, 1, 1);
dstripestart = jas_matrix_getref(data, 0, 0);
for (i = height; i > 0; i -= 4, fstripestart += fstripestep,
dstripestart += dstripestep) {
fvscanstart = fstripestart;
dvscanstart = dstripestart;
vscanlen = JAS_MIN(i, 4);
for (j = width; j > 0; --j, ++fvscanstart, ++dvscanstart) {
fp = fvscanstart;
dp = dvscanstart;
k = vscanlen;
sigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, orient, mqenc, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
sigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, orient, mqenc, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
sigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, orient, mqenc, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
sigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, orient, mqenc, 0);
}
}
if (term) {
jpc_mqenc_flush(mqenc, term - 1);
}
return jpc_mqenc_error(mqenc) ? (-1) : 0;
}
#define rawsigpass_step(fp, frowstep, dp, bitpos, one, nmsedec, out, vcausalflag) \
{ \
jpc_fix_t f = *(fp); \
jpc_fix_t v; \
if ((f & JPC_OTHSIGMSK) && !(f & (JPC_SIG | JPC_VISIT))) { \
v = (abs(*(dp)) & (one)) ? 1 : 0; \
if ((jpc_bitstream_putbit((out), v)) == EOF) { \
return -1; \
} \
if (v) { \
*(nmsedec) += JPC_GETSIGNMSEDEC(abs(*(dp)), (bitpos) + JPC_NUMEXTRABITS); \
v = ((*(dp) < 0) ? 1 : 0); \
if (jpc_bitstream_putbit(out, v) == EOF) { \
return -1; \
} \
JPC_UPDATEFLAGS4(fp, frowstep, v, vcausalflag); \
*(fp) |= JPC_SIG; \
} \
*(fp) |= JPC_VISIT; \
} \
}
static int jpc_encrawsigpass(jpc_bitstream_t *out, int bitpos, int vcausalflag, jas_matrix_t *flags,
jas_matrix_t *data, int term, long *nmsedec)
{
int i;
int j;
int k;
int one;
int vscanlen;
int width;
int height;
int frowstep;
int drowstep;
int fstripestep;
int dstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *dstripestart;
jpc_fix_t *fp;
jpc_fix_t *dp;
jpc_fix_t *fvscanstart;
jpc_fix_t *dvscanstart;
*nmsedec = 0;
width = jas_matrix_numcols(data);
height = jas_matrix_numrows(data);
frowstep = jas_matrix_rowstep(flags);
drowstep = jas_matrix_rowstep(data);
fstripestep = frowstep << 2;
dstripestep = drowstep << 2;
one = 1 << (bitpos + JPC_NUMEXTRABITS);
fstripestart = jas_matrix_getref(flags, 1, 1);
dstripestart = jas_matrix_getref(data, 0, 0);
for (i = height; i > 0; i -= 4, fstripestart += fstripestep,
dstripestart += dstripestep) {
fvscanstart = fstripestart;
dvscanstart = dstripestart;
vscanlen = JAS_MIN(i, 4);
for (j = width; j > 0; --j, ++fvscanstart, ++dvscanstart) {
fp = fvscanstart;
dp = dvscanstart;
k = vscanlen;
rawsigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, out, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
rawsigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, out, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
rawsigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, out, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
rawsigpass_step(fp, frowstep, dp, bitpos, one,
nmsedec, out, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
}
}
if (term) {
jpc_bitstream_outalign(out, 0x2a);
}
return 0;
}
/******************************************************************************\
* Code for refinement pass.
\******************************************************************************/
#define refpass_step(fp, dp, bitpos, one, nmsedec, mqenc, vcausalflag) \
{ \
int v; \
if (((*(fp)) & (JPC_SIG | JPC_VISIT)) == JPC_SIG) { \
(d) = *(dp); \
*(nmsedec) += JPC_GETREFNMSEDEC(abs(d), (bitpos) + JPC_NUMEXTRABITS); \
jpc_mqenc_setcurctx((mqenc), JPC_GETMAGCTXNO(*(fp))); \
v = (abs(d) & (one)) ? 1 : 0; \
jpc_mqenc_putbit((mqenc), v); \
*(fp) |= JPC_REFINE; \
} \
}
static int jpc_encrefpass(jpc_mqenc_t *mqenc, int bitpos, int vcausalflag, jas_matrix_t *flags, jas_matrix_t *data,
int term, long *nmsedec)
{
int i;
int j;
int one;
int vscanlen;
int d;
int width;
int height;
int frowstep;
int drowstep;
int fstripestep;
int dstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *dstripestart;
jpc_fix_t *fvscanstart;
jpc_fix_t *dvscanstart;
jpc_fix_t *dp;
jpc_fix_t *fp;
int k;
*nmsedec = 0;
width = jas_matrix_numcols(data);
height = jas_matrix_numrows(data);
frowstep = jas_matrix_rowstep(flags);
drowstep = jas_matrix_rowstep(data);
fstripestep = frowstep << 2;
dstripestep = drowstep << 2;
one = 1 << (bitpos + JPC_NUMEXTRABITS);
fstripestart = jas_matrix_getref(flags, 1, 1);
dstripestart = jas_matrix_getref(data, 0, 0);
for (i = height; i > 0; i -= 4, fstripestart += fstripestep,
dstripestart += dstripestep) {
fvscanstart = fstripestart;
dvscanstart = dstripestart;
vscanlen = JAS_MIN(i, 4);
for (j = width; j > 0; --j, ++fvscanstart, ++dvscanstart) {
fp = fvscanstart;
dp = dvscanstart;
k = vscanlen;
refpass_step(fp, dp, bitpos, one, nmsedec,
mqenc, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
refpass_step(fp, dp, bitpos, one, nmsedec,
mqenc, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
refpass_step(fp, dp, bitpos, one, nmsedec,
mqenc, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
refpass_step(fp, dp, bitpos, one, nmsedec,
mqenc, 0);
}
}
if (term) {
jpc_mqenc_flush(mqenc, term - 1);
}
return jpc_mqenc_error(mqenc) ? (-1) : 0;
}
#define rawrefpass_step(fp, dp, bitpos, one, nmsedec, out, vcausalflag) \
{ \
jpc_fix_t d; \
jpc_fix_t v; \
if (((*(fp)) & (JPC_SIG | JPC_VISIT)) == JPC_SIG) { \
d = *(dp); \
*(nmsedec) += JPC_GETREFNMSEDEC(abs(d), (bitpos) + JPC_NUMEXTRABITS); \
v = (abs(d) & (one)) ? 1 : 0; \
if (jpc_bitstream_putbit((out), v) == EOF) { \
return -1; \
} \
*(fp) |= JPC_REFINE; \
} \
}
static int jpc_encrawrefpass(jpc_bitstream_t *out, int bitpos, int vcausalflag, jas_matrix_t *flags,
jas_matrix_t *data, int term, long *nmsedec)
{
int i;
int j;
int k;
int one;
int vscanlen;
int width;
int height;
int frowstep;
int drowstep;
int fstripestep;
int dstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *dstripestart;
jpc_fix_t *fvscanstart;
jpc_fix_t *dvscanstart;
jpc_fix_t *dp;
jpc_fix_t *fp;
*nmsedec = 0;
width = jas_matrix_numcols(data);
height = jas_matrix_numrows(data);
frowstep = jas_matrix_rowstep(flags);
drowstep = jas_matrix_rowstep(data);
fstripestep = frowstep << 2;
dstripestep = drowstep << 2;
one = 1 << (bitpos + JPC_NUMEXTRABITS);
fstripestart = jas_matrix_getref(flags, 1, 1);
dstripestart = jas_matrix_getref(data, 0, 0);
for (i = height; i > 0; i -= 4, fstripestart += fstripestep,
dstripestart += dstripestep) {
fvscanstart = fstripestart;
dvscanstart = dstripestart;
vscanlen = JAS_MIN(i, 4);
for (j = width; j > 0; --j, ++fvscanstart, ++dvscanstart) {
fp = fvscanstart;
dp = dvscanstart;
k = vscanlen;
rawrefpass_step(fp, dp, bitpos, one, nmsedec,
out, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
rawrefpass_step(fp, dp, bitpos, one, nmsedec,
out, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
rawrefpass_step(fp, dp, bitpos, one, nmsedec,
out, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
rawrefpass_step(fp, dp, bitpos, one, nmsedec,
out, vcausalflag);
}
}
if (term) {
jpc_bitstream_outalign(out, 0x2a);
}
return 0;
}
/******************************************************************************\
* Code for cleanup pass.
\******************************************************************************/
#define clnpass_step(fp, frowstep, dp, bitpos, one, orient, nmsedec, mqenc, label1, label2, vcausalflag) \
{ \
int f; \
int v; \
label1 \
f = *(fp); \
if (!(f & (JPC_SIG | JPC_VISIT))) { \
jpc_mqenc_setcurctx(mqenc, JPC_GETZCCTXNO(f, (orient))); \
v = (abs(*(dp)) & (one)) ? 1 : 0; \
jpc_mqenc_putbit((mqenc), v); \
if (v) { \
label2 \
f = *(fp); \
/* Coefficient is significant. */ \
*(nmsedec) += JPC_GETSIGNMSEDEC(abs(*(dp)), (bitpos) + JPC_NUMEXTRABITS); \
jpc_mqenc_setcurctx((mqenc), JPC_GETSCCTXNO(f)); \
v = ((*(dp) < 0) ? 1 : 0); \
jpc_mqenc_putbit((mqenc), v ^ JPC_GETSPB(f)); \
JPC_UPDATEFLAGS4((fp), (frowstep), v, vcausalflag); \
*(fp) |= JPC_SIG; \
} \
} \
*(fp) &= ~JPC_VISIT; \
}
static int jpc_encclnpass(jpc_mqenc_t *mqenc, int bitpos, int orient, int vcausalflag, int segsymflag, jas_matrix_t *flags,
jas_matrix_t *data, int term, long *nmsedec)
{
int i;
int j;
int k;
int vscanlen;
int v;
int runlen;
jpc_fix_t *fp;
int width;
int height;
jpc_fix_t *dp;
int one;
int frowstep;
int drowstep;
int fstripestep;
int dstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *dstripestart;
jpc_fix_t *fvscanstart;
jpc_fix_t *dvscanstart;
*nmsedec = 0;
width = jas_matrix_numcols(data);
height = jas_matrix_numrows(data);
frowstep = jas_matrix_rowstep(flags);
drowstep = jas_matrix_rowstep(data);
fstripestep = frowstep << 2;
dstripestep = drowstep << 2;
one = 1 << (bitpos + JPC_NUMEXTRABITS);
fstripestart = jas_matrix_getref(flags, 1, 1);
dstripestart = jas_matrix_getref(data, 0, 0);
for (i = height; i > 0; i -= 4, fstripestart += fstripestep,
dstripestart += dstripestep) {
fvscanstart = fstripestart;
dvscanstart = dstripestart;
vscanlen = JAS_MIN(i, 4);
for (j = width; j > 0; --j, ++fvscanstart, ++dvscanstart) {
fp = fvscanstart;
if (vscanlen >= 4 && !((*fp) & (JPC_SIG | JPC_VISIT |
JPC_OTHSIGMSK)) && (fp += frowstep, !((*fp) & (JPC_SIG |
JPC_VISIT | JPC_OTHSIGMSK))) && (fp += frowstep, !((*fp) &
(JPC_SIG | JPC_VISIT | JPC_OTHSIGMSK))) && (fp += frowstep,
!((*fp) & (JPC_SIG | JPC_VISIT | JPC_OTHSIGMSK)))) {
dp = dvscanstart;
for (k = 0; k < vscanlen; ++k) {
v = (abs(*dp) & one) ? 1 : 0;
if (v) {
break;
}
dp += drowstep;
}
runlen = k;
if (runlen >= 4) {
jpc_mqenc_setcurctx(mqenc, JPC_AGGCTXNO);
jpc_mqenc_putbit(mqenc, 0);
continue;
}
jpc_mqenc_setcurctx(mqenc, JPC_AGGCTXNO);
jpc_mqenc_putbit(mqenc, 1);
jpc_mqenc_setcurctx(mqenc, JPC_UCTXNO);
jpc_mqenc_putbit(mqenc, runlen >> 1);
jpc_mqenc_putbit(mqenc, runlen & 1);
fp = fvscanstart + frowstep * runlen;
dp = dvscanstart + drowstep * runlen;
k = vscanlen - runlen;
switch (runlen) {
case 0:
goto clnpass_partial0;
break;
case 1:
goto clnpass_partial1;
break;
case 2:
goto clnpass_partial2;
break;
case 3:
goto clnpass_partial3;
break;
}
} else {
runlen = 0;
fp = fvscanstart;
dp = dvscanstart;
k = vscanlen;
goto clnpass_full0;
}
clnpass_step(fp, frowstep, dp, bitpos, one,
orient, nmsedec, mqenc, clnpass_full0:, clnpass_partial0:, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
clnpass_step(fp, frowstep, dp, bitpos, one,
orient, nmsedec, mqenc, ;, clnpass_partial1:, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
clnpass_step(fp, frowstep, dp, bitpos, one,
orient, nmsedec, mqenc, ;, clnpass_partial2:, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
clnpass_step(fp, frowstep, dp, bitpos, one,
orient, nmsedec, mqenc, ;, clnpass_partial3:, 0);
}
}
if (segsymflag) {
jpc_mqenc_setcurctx(mqenc, JPC_UCTXNO);
jpc_mqenc_putbit(mqenc, 1);
jpc_mqenc_putbit(mqenc, 0);
jpc_mqenc_putbit(mqenc, 1);
jpc_mqenc_putbit(mqenc, 0);
}
if (term) {
jpc_mqenc_flush(mqenc, term - 1);
}
return jpc_mqenc_error(mqenc) ? (-1) : 0;
}
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