diff options
Diffstat (limited to 'src/3rdparty/jasper/src/libjasper/jpc/jpc_t1dec.c')
| -rw-r--r-- | src/3rdparty/jasper/src/libjasper/jpc/jpc_t1dec.c | 923 |
1 files changed, 0 insertions, 923 deletions
diff --git a/src/3rdparty/jasper/src/libjasper/jpc/jpc_t1dec.c b/src/3rdparty/jasper/src/libjasper/jpc/jpc_t1dec.c deleted file mode 100644 index 7c85407..0000000 --- a/src/3rdparty/jasper/src/libjasper/jpc/jpc_t1dec.c +++ /dev/null @@ -1,923 +0,0 @@ -/* - * Copyright (c) 1999-2000 Image Power, Inc. and the University of - * British Columbia. - * Copyright (c) 2001-2003 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 Decoder - * - * $Id$ - */ - -/******************************************************************************\ -* Includes. -\******************************************************************************/ - -#include <stdio.h> -#include <stdlib.h> -#include <assert.h> - -#include "jasper/jas_debug.h" -#include "jasper/jas_fix.h" -#include "jasper/jas_stream.h" -#include "jasper/jas_math.h" - -#include "jpc_bs.h" -#include "jpc_mqdec.h" -#include "jpc_t1dec.h" -#include "jpc_t1cod.h" -#include "jpc_dec.h" - -/******************************************************************************\ -* -\******************************************************************************/ - -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); -static int dec_sigpass(jpc_dec_t *dec, jpc_mqdec_t *mqdec, int bitpos, int orient, - int vcausalflag, jas_matrix_t *flags, jas_matrix_t *data); -static int dec_rawsigpass(jpc_dec_t *dec, jpc_bitstream_t *in, int bitpos, - int vcausalflag, jas_matrix_t *flags, jas_matrix_t *data); -static int dec_refpass(jpc_dec_t *dec, jpc_mqdec_t *mqdec, int bitpos, int vcausalflag, - jas_matrix_t *flags, jas_matrix_t *data); -static int dec_rawrefpass(jpc_dec_t *dec, jpc_bitstream_t *in, int bitpos, - int vcausalflag, jas_matrix_t *flags, jas_matrix_t *data); -static int dec_clnpass(jpc_dec_t *dec, jpc_mqdec_t *mqdec, int bitpos, int orient, - int vcausalflag, int segsymflag, jas_matrix_t *flags, jas_matrix_t *data); - -#if defined(DEBUG) -static long t1dec_cnt = 0; -#endif - -#if !defined(DEBUG) -#define JPC_T1D_GETBIT(mqdec, v, passtypename, symtypename) \ - ((v) = jpc_mqdec_getbit(mqdec)) -#else -#define JPC_T1D_GETBIT(mqdec, v, passtypename, symtypename) \ -{ \ - (v) = jpc_mqdec_getbit(mqdec); \ - if (jas_getdbglevel() >= 100) { \ - jas_eprintf("index = %ld; passtype = %s; symtype = %s; sym = %d\n", t1dec_cnt, passtypename, symtypename, v); \ - ++t1dec_cnt; \ - } \ -} -#endif -#define JPC_T1D_GETBITNOSKEW(mqdec, v, passtypename, symtypename) \ - JPC_T1D_GETBIT(mqdec, v, passtypename, symtypename) - -#if !defined(DEBUG) -#define JPC_T1D_RAWGETBIT(bitstream, v, passtypename, symtypename) \ - ((v) = jpc_bitstream_getbit(bitstream)) -#else -#define JPC_T1D_RAWGETBIT(bitstream, v, passtypename, symtypename) \ -{ \ - (v) = jpc_bitstream_getbit(bitstream); \ - if (jas_getdbglevel() >= 100) { \ - jas_eprintf("index = %ld; passtype = %s; symtype = %s; sym = %d\n", t1dec_cnt, passtypename, symtypename, v); \ - ++t1dec_cnt; \ - } \ -} -#endif - -/******************************************************************************\ -* Code. -\******************************************************************************/ - -int jpc_dec_decodecblks(jpc_dec_t *dec, jpc_dec_tile_t *tile) -{ - jpc_dec_tcomp_t *tcomp; - int compcnt; - jpc_dec_rlvl_t *rlvl; - int rlvlcnt; - jpc_dec_band_t *band; - int bandcnt; - jpc_dec_prc_t *prc; - int prccnt; - jpc_dec_cblk_t *cblk; - int cblkcnt; - - for (compcnt = dec->numcomps, tcomp = tile->tcomps; compcnt > 0; - --compcnt, ++tcomp) { - for (rlvlcnt = tcomp->numrlvls, rlvl = tcomp->rlvls; - rlvlcnt > 0; --rlvlcnt, ++rlvl) { - if (!rlvl->bands) { - continue; - } - for (bandcnt = rlvl->numbands, band = rlvl->bands; - bandcnt > 0; --bandcnt, ++band) { - if (!band->data) { - continue; - } - for (prccnt = rlvl->numprcs, prc = band->prcs; - prccnt > 0; --prccnt, ++prc) { - if (!prc->cblks) { - continue; - } - for (cblkcnt = prc->numcblks, - cblk = prc->cblks; cblkcnt > 0; - --cblkcnt, ++cblk) { - if (jpc_dec_decodecblk(dec, tile, tcomp, - band, cblk, 1, JPC_MAXLYRS)) { - return -1; - } - } - } - - } - } - } - - 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; -} - -/******************************************************************************\ -* Code for significance pass. -\******************************************************************************/ - -#define jpc_sigpass_step(fp, frowstep, dp, bitpos, oneplushalf, orient, mqdec, vcausalflag) \ -{ \ - int f; \ - int v; \ - f = *(fp); \ - if ((f & JPC_OTHSIGMSK) && !(f & (JPC_SIG | JPC_VISIT))) { \ - jpc_mqdec_setcurctx((mqdec), JPC_GETZCCTXNO(f, (orient))); \ - JPC_T1D_GETBIT((mqdec), v, "SIG", "ZC"); \ - if (v) { \ - jpc_mqdec_setcurctx((mqdec), JPC_GETSCCTXNO(f)); \ - JPC_T1D_GETBIT((mqdec), v, "SIG", "SC"); \ - v ^= JPC_GETSPB(f); \ - JPC_UPDATEFLAGS4((fp), (frowstep), v, (vcausalflag)); \ - *(fp) |= JPC_SIG; \ - *(dp) = (v) ? (-(oneplushalf)) : (oneplushalf); \ - } \ - *(fp) |= JPC_VISIT; \ - } \ -} - -static int dec_sigpass(jpc_dec_t *dec, register jpc_mqdec_t *mqdec, int bitpos, int orient, - int vcausalflag, jas_matrix_t *flags, jas_matrix_t *data) -{ - int i; - int j; - 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; - int k; - - /* Avoid compiler warning about unused parameters. */ - dec = 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; - 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_sigpass_step(fp, frowstep, dp, bitpos, oneplushalf, - orient, mqdec, vcausalflag); - if (--k <= 0) { - continue; - } - fp += frowstep; - dp += drowstep; - - /* Process second sample in vertical scan. */ - jpc_sigpass_step(fp, frowstep, dp, bitpos, oneplushalf, - orient, mqdec, 0); - if (--k <= 0) { - continue; - } - fp += frowstep; - dp += drowstep; - - /* Process third sample in vertical scan. */ - jpc_sigpass_step(fp, frowstep, dp, bitpos, oneplushalf, - orient, mqdec, 0); - if (--k <= 0) { - continue; - } - fp += frowstep; - dp += drowstep; - - /* Process fourth sample in vertical scan. */ - jpc_sigpass_step(fp, frowstep, dp, bitpos, oneplushalf, - orient, mqdec, 0); - } - } - return 0; -} - -#define jpc_rawsigpass_step(fp, frowstep, dp, oneplushalf, in, vcausalflag) \ -{ \ - jpc_fix_t f = *(fp); \ - jpc_fix_t v; \ - if ((f & JPC_OTHSIGMSK) && !(f & (JPC_SIG | JPC_VISIT))) { \ - JPC_T1D_RAWGETBIT(in, v, "SIG", "ZC"); \ - if (v < 0) { \ - return -1; \ - } \ - if (v) { \ - JPC_T1D_RAWGETBIT(in, v, "SIG", "SC"); \ - if (v < 0) { \ - return -1; \ - } \ - JPC_UPDATEFLAGS4((fp), (frowstep), v, (vcausalflag)); \ - *(fp) |= JPC_SIG; \ - *(dp) = v ? (-oneplushalf) : (oneplushalf); \ - } \ - *(fp) |= JPC_VISIT; \ - } \ -} - -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; - - /* Avoid compiler warning about unused parameters. */ - dec = 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; - 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; -} - -/******************************************************************************\ -* Code for refinement pass. -\******************************************************************************/ - -#define jpc_refpass_step(fp, dp, poshalf, neghalf, mqdec, vcausalflag) \ -{ \ - int v; \ - int t; \ - if (((*(fp)) & (JPC_SIG | JPC_VISIT)) == JPC_SIG) { \ - jpc_mqdec_setcurctx((mqdec), JPC_GETMAGCTXNO(*(fp))); \ - JPC_T1D_GETBITNOSKEW((mqdec), v, "REF", "MR"); \ - t = (v ? (poshalf) : (neghalf)); \ - *(dp) += (*(dp) < 0) ? (-t) : t; \ - *(fp) |= JPC_REFINE; \ - } \ -} - -static int dec_refpass(jpc_dec_t *dec, register jpc_mqdec_t *mqdec, int bitpos, - int vcausalflag, jas_matrix_t *flags, jas_matrix_t *data) -{ - int i; - int j; - 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; - int k; - - /* 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_refpass_step(fp, dp, poshalf, neghalf, mqdec, - vcausalflag); - if (--k <= 0) { - continue; - } - fp += frowstep; - dp += drowstep; - - /* Process second sample in vertical scan. */ - jpc_refpass_step(fp, dp, poshalf, neghalf, mqdec, 0); - if (--k <= 0) { - continue; - } - fp += frowstep; - dp += drowstep; - - /* Process third sample in vertical scan. */ - jpc_refpass_step(fp, dp, poshalf, neghalf, mqdec, 0); - if (--k <= 0) { - continue; - } - fp += frowstep; - dp += drowstep; - - /* Process fourth sample in vertical scan. */ - jpc_refpass_step(fp, dp, poshalf, neghalf, mqdec, 0); - } - } - - return 0; -} - -#define jpc_rawrefpass_step(fp, dp, poshalf, neghalf, in, vcausalflag) \ -{ \ - jpc_fix_t v; \ - jpc_fix_t t; \ - if (((*(fp)) & (JPC_SIG | JPC_VISIT)) == JPC_SIG) { \ - JPC_T1D_RAWGETBIT(in, v, "REF", "MAGREF"); \ - if (v < 0) { \ - return -1; \ - } \ - t = (v ? poshalf : neghalf); \ - *(dp) += (*(dp) < 0) ? (-t) : t; \ - *(fp) |= JPC_REFINE; \ - } \ -} - -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; -} - -/******************************************************************************\ -* Code for cleanup pass. -\******************************************************************************/ - -#define jpc_clnpass_step(f, fp, frowstep, dp, oneplushalf, orient, mqdec, flabel, plabel, vcausalflag) \ -{ \ - int v; \ -flabel \ - if (!((f) & (JPC_SIG | JPC_VISIT))) { \ - jpc_mqdec_setcurctx((mqdec), JPC_GETZCCTXNO((f), (orient))); \ - JPC_T1D_GETBIT((mqdec), v, "CLN", "ZC"); \ - if (v) { \ -plabel \ - /* Coefficient is significant. */ \ - jpc_mqdec_setcurctx((mqdec), JPC_GETSCCTXNO(f)); \ - JPC_T1D_GETBIT((mqdec), v, "CLN", "SC"); \ - v ^= JPC_GETSPB(f); \ - *(dp) = (v) ? (-(oneplushalf)) : (oneplushalf); \ - JPC_UPDATEFLAGS4((fp), (frowstep), v, (vcausalflag)); \ - *(fp) |= JPC_SIG; \ - } \ - } \ - /* XXX - Is this correct? Can aggregation cause some VISIT bits not to be reset? Check. */ \ - *(fp) &= ~JPC_VISIT; \ -} - -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); - } - } - - if (segsymflag) { - int segsymval; - segsymval = 0; - jpc_mqdec_setcurctx(mqdec, JPC_UCTXNO); - JPC_T1D_GETBITNOSKEW(mqdec, v, "CLN", "SEGSYM"); - segsymval = (segsymval << 1) | (v & 1); - JPC_T1D_GETBITNOSKEW(mqdec, v, "CLN", "SEGSYM"); - segsymval = (segsymval << 1) | (v & 1); - JPC_T1D_GETBITNOSKEW(mqdec, v, "CLN", "SEGSYM"); - segsymval = (segsymval << 1) | (v & 1); - JPC_T1D_GETBITNOSKEW(mqdec, v, "CLN", "SEGSYM"); - segsymval = (segsymval << 1) | (v & 1); - if (segsymval != 0xa) { - jas_eprintf("warning: bad segmentation symbol\n"); - } - } - - return 0; -} |