double msen(jas_matrix_t *x, jas_matrix_t *y, int n)
{
double s;
double d;
int i;
int j;
s = 0.0;
for (i = 0; i < jas_matrix_numrows(x); i++) {
for (j = 0; j < jas_matrix_numcols(x); j++) {
d = jas_matrix_get(y, i, j) - jas_matrix_get(x, i, j);
if (n == 1) {
s += fabs(d);
} else if (n == 2) {
s += d * d;
} else {
abort();
}
}
}
return s / ((double) jas_matrix_numrows(x) * jas_matrix_numcols(x));
}
double pae(jas_matrix_t *x, jas_matrix_t *y)
{
double s;
double d;
int i;
int j;
s = 0.0;
for (i = 0; i < jas_matrix_numrows(x); i++) {
for (j = 0; j < jas_matrix_numcols(x); j++) {
d = abs(jas_matrix_get(y, i, j) - jas_matrix_get(x, i, j));
if (d > s) {
s = d;
}
}
}
return s;
}
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);
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;
}
/* 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_malloc(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;
}
/* 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;
}
/* 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 *endcblks;
int k;
int bmx;
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) {
int error = 0;
if (!prc->cblks) {
continue;
}
bmx = 0;
endcblks = &prc->cblks[prc->numcblks];
#pragma omp parallel for reduction(|:error)
for (k=0; k<prc->numcblks; ++k) {
//OMP: for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
int v, mx, i, j;
jpc_enc_cblk_t *cblk = &(prc->cblks[k]);
//printf("Thread %d working on k %d (numcblks = %d)\n", omp_get_thread_num(), k, prc->numcblks);
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);
//OMP: }
//OMP: for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
cblk->numimsbs = band->numbps - cblk->numbps;
assert(cblk->numimsbs >= 0);
//OMP: }
//OMP: for (cblk = prc->cblks; cblk != endcblks; ++cblk) {
if (jpc_enc_enccblk(enc, cblk->stream, tcmpt, band, cblk)) {
error |= 1;
//OMP: return -1;
}
}
//printf("Exiting\n");
if(error)
return -1;
}
}
}
}
return 0;
}
static int dec_clnpass(jpc_dec_t *dec, register jpc_mqdec_t *mqdec, int bitpos, int orient,
int vcausalflag, int segsymflag, jas_matrix_t *flags, jas_matrix_t *data)
{
int i;
int j;
int k;
int vscanlen;
int v;
int half;
int runlen;
int f;
int width;
int height;
int one;
int oneplushalf;
jpc_fix_t *fp;
int frowstep;
int fstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *fvscanstart;
jpc_fix_t *dp;
int drowstep;
int dstripestep;
jpc_fix_t *dstripestart;
jpc_fix_t *dvscanstart;
/* Avoid compiler warning about unused parameters. */
dec = 0;
one = 1 << bitpos;
half = one >> 1;
oneplushalf = one | half;
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;
fstripestart = jas_matrix_getref(flags, 1, 1);
dstripestart = jas_matrix_getref(data, 0, 0);
for (i = 0; i < height; i += 4, fstripestart += fstripestep,
dstripestart += dstripestep) {
fvscanstart = fstripestart;
dvscanstart = dstripestart;
vscanlen = JAS_MIN(4, height - i);
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)))) {
jpc_mqdec_setcurctx(mqdec, JPC_AGGCTXNO);
JPC_T1D_GETBIT(mqdec, v, "CLN", "AGG");
if (!v) {
continue;
}
jpc_mqdec_setcurctx(mqdec, JPC_UCTXNO);
JPC_T1D_GETBITNOSKEW(mqdec, v, "CLN", "RL");
runlen = v;
JPC_T1D_GETBITNOSKEW(mqdec, v, "CLN", "RL");
runlen = (runlen << 1) | v;
f = *(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 {
f = *(fp = fvscanstart);
dp = dvscanstart;
k = vscanlen;
goto clnpass_full0;
}
/* Process first sample in vertical scan. */
jpc_clnpass_step(f, fp, frowstep, dp, oneplushalf, orient,
mqdec, clnpass_full0:, clnpass_partial0:,
vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process second sample in vertical scan. */
f = *fp;
jpc_clnpass_step(f, fp, frowstep, dp, oneplushalf, orient,
mqdec, ;, clnpass_partial1:, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process third sample in vertical scan. */
f = *fp;
jpc_clnpass_step(f, fp, frowstep, dp, oneplushalf, orient,
mqdec, ;, clnpass_partial2:, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process fourth sample in vertical scan. */
f = *fp;
jpc_clnpass_step(f, fp, frowstep, dp, oneplushalf, orient,
mqdec, ;, clnpass_partial3:, 0);
static int dec_rawrefpass(jpc_dec_t *dec, jpc_bitstream_t *in, int bitpos, int vcausalflag,
jas_matrix_t *flags, jas_matrix_t *data)
{
int i;
int j;
int k;
int vscanlen;
int width;
int height;
int one;
int poshalf;
int neghalf;
jpc_fix_t *fp;
int frowstep;
int fstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *fvscanstart;
jpc_fix_t *dp;
int drowstep;
int dstripestep;
jpc_fix_t *dstripestart;
jpc_fix_t *dvscanstart;
/* Avoid compiler warning about unused parameters. */
dec = 0;
vcausalflag = 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;
poshalf = one >> 1;
neghalf = (bitpos > 0) ? (-poshalf) : (-1);
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;
/* Process first sample in vertical scan. */
jpc_rawrefpass_step(fp, dp, poshalf, neghalf, in,
vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process second sample in vertical scan. */
jpc_rawrefpass_step(fp, dp, poshalf, neghalf, in, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process third sample in vertical scan. */
jpc_rawrefpass_step(fp, dp, poshalf, neghalf, in, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process fourth sample in vertical scan. */
jpc_rawrefpass_step(fp, dp, poshalf, neghalf, in, 0);
}
}
return 0;
}
static int jpc_dec_decodecblk(jpc_dec_t *dec, jpc_dec_tile_t *tile, jpc_dec_tcomp_t *tcomp, jpc_dec_band_t *band,
jpc_dec_cblk_t *cblk, int dopartial, int maxlyrs)
{
jpc_dec_seg_t *seg;
int i;
int bpno;
int passtype;
int ret;
int compno;
int filldata;
int fillmask;
jpc_dec_ccp_t *ccp;
compno = tcomp - tile->tcomps;
if (!cblk->flags) {
/* Note: matrix is assumed to be zeroed */
if (!(cblk->flags = jas_matrix_create(jas_matrix_numrows(cblk->data) +
2, jas_matrix_numcols(cblk->data) + 2))) {
return -1;
}
}
seg = cblk->segs.head;
while (seg && (seg != cblk->curseg || dopartial) && (maxlyrs < 0 ||
seg->lyrno < maxlyrs)) {
assert(seg->numpasses >= seg->maxpasses || dopartial);
assert(seg->stream);
jas_stream_rewind(seg->stream);
jas_stream_setrwcount(seg->stream, 0);
if (seg->type == JPC_SEG_MQ) {
if (!cblk->mqdec) {
if (!(cblk->mqdec = jpc_mqdec_create(JPC_NUMCTXS, 0))) {
return -1;
}
jpc_mqdec_setctxs(cblk->mqdec, JPC_NUMCTXS, jpc_mqctxs);
}
jpc_mqdec_setinput(cblk->mqdec, seg->stream);
jpc_mqdec_init(cblk->mqdec);
} else {
assert(seg->type == JPC_SEG_RAW);
if (!cblk->nulldec) {
if (!(cblk->nulldec = jpc_bitstream_sopen(seg->stream, "r"))) {
assert(0);
}
}
}
for (i = 0; i < seg->numpasses; ++i) {
if (cblk->numimsbs > band->numbps) {
ccp = &tile->cp->ccps[compno];
if (ccp->roishift <= 0) {
jas_eprintf("warning: corrupt code stream\n");
} else {
if (cblk->numimsbs < ccp->roishift - band->numbps) {
jas_eprintf("warning: corrupt code stream\n");
}
}
}
bpno = band->roishift + band->numbps - 1 - (cblk->numimsbs +
(seg->passno + i - cblk->firstpassno + 2) / 3);
if (bpno < 0) {
goto premature_exit;
}
#if 1
passtype = (seg->passno + i + 2) % 3;
#else
passtype = JPC_PASSTYPE(seg->passno + i + 2);
#endif
assert(bpno >= 0 && bpno < 31);
switch (passtype) {
case JPC_SIGPASS:
ret = (seg->type == JPC_SEG_MQ) ? dec_sigpass(dec,
cblk->mqdec, bpno, band->orient,
(tile->cp->ccps[compno].cblkctx & JPC_COX_VSC) != 0,
cblk->flags, cblk->data) :
dec_rawsigpass(dec, cblk->nulldec, bpno,
(tile->cp->ccps[compno].cblkctx & JPC_COX_VSC) != 0,
cblk->flags, cblk->data);
break;
case JPC_REFPASS:
ret = (seg->type == JPC_SEG_MQ) ?
dec_refpass(dec, cblk->mqdec, bpno,
(tile->cp->ccps[compno].cblkctx & JPC_COX_VSC) != 0,
cblk->flags, cblk->data) :
dec_rawrefpass(dec, cblk->nulldec, bpno,
(tile->cp->ccps[compno].cblkctx & JPC_COX_VSC) != 0,
cblk->flags, cblk->data);
break;
case JPC_CLNPASS:
assert(seg->type == JPC_SEG_MQ);
ret = dec_clnpass(dec, cblk->mqdec, bpno,
band->orient, (tile->cp->ccps[compno].cblkctx &
JPC_COX_VSC) != 0, (tile->cp->ccps[compno].cblkctx &
JPC_COX_SEGSYM) != 0, cblk->flags,
cblk->data);
break;
default:
ret = -1;
break;
}
/* Do we need to reset after each coding pass? */
if (tile->cp->ccps[compno].cblkctx & JPC_COX_RESET) {
jpc_mqdec_setctxs(cblk->mqdec, JPC_NUMCTXS, jpc_mqctxs);
}
if (ret) {
jas_eprintf("coding pass failed passtype=%d segtype=%d\n", passtype, seg->type);
return -1;
}
}
if (seg->type == JPC_SEG_MQ) {
/* Note: dont destroy mq decoder because context info will be lost */
} else {
assert(seg->type == JPC_SEG_RAW);
if (tile->cp->ccps[compno].cblkctx & JPC_COX_PTERM) {
fillmask = 0x7f;
filldata = 0x2a;
} else {
fillmask = 0;
filldata = 0;
}
if ((ret = jpc_bitstream_inalign(cblk->nulldec, fillmask,
filldata)) < 0) {
return -1;
} else if (ret > 0) {
jas_eprintf("warning: bad termination pattern detected\n");
}
jpc_bitstream_close(cblk->nulldec);
cblk->nulldec = 0;
}
cblk->curseg = seg->next;
jpc_seglist_remove(&cblk->segs, seg);
jpc_seg_destroy(seg);
seg = cblk->curseg;
}
assert(dopartial ? (!cblk->curseg) : 1);
premature_exit:
return 0;
}
jas_image_t *makediffimage(jas_matrix_t *origdata, jas_matrix_t *recondata)
{
jas_image_t *diffimage;
jas_matrix_t *diffdata[3];
int width;
int height;
int i;
int j;
int k;
jas_image_cmptparm_t compparms[3];
jas_seqent_t a;
jas_seqent_t b;
width = jas_matrix_numcols(origdata);
height = jas_matrix_numrows(origdata);
for (i = 0; i < 3; ++i) {
compparms[i].tlx = 0;
compparms[i].tly = 0;
compparms[i].hstep = 1;
compparms[i].vstep = 1;
compparms[i].width = width;
compparms[i].height = height;
compparms[i].prec = 8;
compparms[i].sgnd = jas_false;
}
if (!(diffimage = jas_image_create(3, compparms, JAS_CLRSPC_SRGB))) {
abort();
}
for (i = 0; i < 3; ++i) {
if (!(diffdata[i] = jas_matrix_create(height, width))) {
jas_eprintf("internal error\n");
return 0;
}
}
for (j = 0; j < height; ++j) {
for (k = 0; k < width; ++k) {
a = jas_matrix_get(origdata, j, k);
b = jas_matrix_get(recondata, j, k);
if (a > b) {
jas_matrix_set(diffdata[0], j, k, 255);
jas_matrix_set(diffdata[1], j, k, 0);
jas_matrix_set(diffdata[2], j, k, 0);
} else if (a < b) {
jas_matrix_set(diffdata[0], j, k, 0);
jas_matrix_set(diffdata[1], j, k, 255);
jas_matrix_set(diffdata[2], j, k, 0);
} else {
jas_matrix_set(diffdata[0], j, k, a);
jas_matrix_set(diffdata[1], j, k, a);
jas_matrix_set(diffdata[2], j, k, a);
}
}
}
for (i = 0; i < 3; ++i) {
if (jas_image_writecmpt(diffimage, i, 0, 0, width, height, diffdata[i])) {
return 0;
}
}
return diffimage;
}
static int dec_rawsigpass(jpc_dec_t *dec, jpc_bitstream_t *in, int bitpos, int vcausalflag,
jas_matrix_t *flags, jas_matrix_t *data)
{
int i;
int j;
int k;
int one;
int half;
int oneplushalf;
int vscanlen;
int width;
int height;
jpc_fix_t *fp;
int frowstep;
int fstripestep;
jpc_fix_t *fstripestart;
jpc_fix_t *fvscanstart;
jpc_fix_t *dp;
int drowstep;
int dstripestep;
jpc_fix_t *dstripestart;
jpc_fix_t *dvscanstart;
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;
half = one >> 1;
oneplushalf = one | half;
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;
/* Process first sample in vertical scan. */
jpc_rawsigpass_step(fp, frowstep, dp, oneplushalf,
in, vcausalflag);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process second sample in vertical scan. */
jpc_rawsigpass_step(fp, frowstep, dp, oneplushalf,
in, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process third sample in vertical scan. */
jpc_rawsigpass_step(fp, frowstep, dp, oneplushalf,
in, 0);
if (--k <= 0) {
continue;
}
fp += frowstep;
dp += drowstep;
/* Process fourth sample in vertical scan. */
jpc_rawsigpass_step(fp, frowstep, dp, oneplushalf,
in, 0);
}
}
return 0;
}