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Diffstat (limited to 'src/libjasper/jpc/jpc_t1enc.c')
| -rw-r--r-- | src/libjasper/jpc/jpc_t1enc.c | 964 |
1 files changed, 964 insertions, 0 deletions
diff --git a/src/libjasper/jpc/jpc_t1enc.c b/src/libjasper/jpc/jpc_t1enc.c new file mode 100644 index 0000000..b7cc171 --- /dev/null +++ b/src/libjasper/jpc/jpc_t1enc.c @@ -0,0 +1,964 @@ +/* + * 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 1.1 2008/10/17 06:15:00 scuri 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) { + + // GeoJasper: dima - progress + jas_do_progress( (int) lvl, (int) (endlvls-1), "jpc: encode" ); + if (jas_test_abort() == 1) return -1; + + 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_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; +} + +/******************************************************************************\ +* 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; +} |