diff options
Diffstat (limited to 'osframework/source/ImageLib/jpeg2000/jpc_dec.c')
| -rw-r--r-- | osframework/source/ImageLib/jpeg2000/jpc_dec.c | 2361 |
1 files changed, 2361 insertions, 0 deletions
diff --git a/osframework/source/ImageLib/jpeg2000/jpc_dec.c b/osframework/source/ImageLib/jpeg2000/jpc_dec.c new file mode 100644 index 0000000..ff8a468 --- /dev/null +++ b/osframework/source/ImageLib/jpeg2000/jpc_dec.c @@ -0,0 +1,2361 @@ +/*
+ * 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 Software License
+ *
+ * IMAGE POWER JPEG-2000 PUBLIC LICENSE
+ * ************************************
+ *
+ * GRANT:
+ *
+ * Permission is hereby granted, free of charge, to any person (the "User")
+ * obtaining a copy of this software and associated documentation, to deal
+ * in the JasPer Software without restriction, including without limitation
+ * the right to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the JasPer Software (in source and binary forms),
+ * and to permit persons to whom the JasPer Software is furnished to do so,
+ * provided further that the License Conditions below are met.
+ *
+ * License Conditions
+ * ******************
+ *
+ * A. Redistributions of source code must retain the above copyright notice,
+ * and this list of conditions, and the following disclaimer.
+ *
+ * B. Redistributions in binary form must reproduce the above copyright
+ * notice, and this list of conditions, and the following disclaimer in
+ * the documentation and/or other materials provided with the distribution.
+ *
+ * C. Neither the name of Image Power, Inc. nor any other contributor
+ * (including, but not limited to, the University of British Columbia and
+ * Michael David Adams) may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * D. User agrees that it shall not commence any action against Image Power,
+ * Inc., the University of British Columbia, Michael David Adams, or any
+ * other contributors (collectively "Licensors") for infringement of any
+ * intellectual property rights ("IPR") held by the User in respect of any
+ * technology that User owns or has a right to license or sublicense and
+ * which is an element required in order to claim compliance with ISO/IEC
+ * 15444-1 (i.e., JPEG-2000 Part 1). "IPR" means all intellectual property
+ * rights worldwide arising under statutory or common law, and whether
+ * or not perfected, including, without limitation, all (i) patents and
+ * patent applications owned or licensable by User; (ii) rights associated
+ * with works of authorship including copyrights, copyright applications,
+ * copyright registrations, mask work rights, mask work applications,
+ * mask work registrations; (iii) rights relating to the protection of
+ * trade secrets and confidential information; (iv) any right analogous
+ * to those set forth in subsections (i), (ii), or (iii) and any other
+ * proprietary rights relating to intangible property (other than trademark,
+ * trade dress, or service mark rights); and (v) divisions, continuations,
+ * renewals, reissues and extensions of the foregoing (as and to the extent
+ * applicable) now existing, hereafter filed, issued or acquired.
+ *
+ * E. If User commences an infringement action against any Licensor(s) then
+ * such Licensor(s) shall have the right to terminate User's license and
+ * all sublicenses that have been granted hereunder by User to other parties.
+ *
+ * F. This software is for use only in hardware or software products that
+ * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1). No license
+ * or right to this Software is granted for products that do not comply
+ * with ISO/IEC 15444-1. The JPEG-2000 Part 1 standard can be purchased
+ * from the ISO.
+ *
+ * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
+ * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+ * THIS DISCLAIMER. THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND
+ * CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY
+ * OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
+ * WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE,
+ * IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING. THOSE INTENDING
+ * TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE
+ * OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING
+ * PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS.
+ * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE
+ * IS WITH THE USER. SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE
+ * IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY
+ * OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY
+ * OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING,
+ * REPAIR OR CORRECTION. UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY,
+ * WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE
+ * INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC.,
+ * MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE
+ * JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO
+ * THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR
+ * CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION,
+ * DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR
+ * MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF
+ * SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY
+ * OF SUCH DAMAGES. THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT
+ * FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR
+ * RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING
+ * FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES,
+ * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT
+ * LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
+ * JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY
+ * TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE
+ * ("HIGH RISK ACTIVITIES"). LICENSOR SPECIFICALLY DISCLAIMS ANY EXPRESS
+ * OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. USER WILL NOT
+ * KNOWINGLY USE, DISTRIBUTE OR RESELL THE JASPER SOFTWARE OR UNDERLYING
+ * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS
+ * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE
+ * NOTICE SPECIFIED IN THIS SECTION.
+ *
+ * __END_OF_JASPER_LICENSE__
+ */
+
+/*
+ * $Id: jpc_dec.c,v 1.1 2003/05/15 01:30:32 ace Exp $
+ */
+
+/******************************************************************************\
+* Includes.
+\******************************************************************************/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include "jas_types.h"
+#include "jas_math.h"
+#include "jas_tvp.h"
+#include "jas_malloc.h"
+#include "jas_debug.h"
+
+#include "jpc_fix.h"
+#include "jpc_dec.h"
+#include "jpc_cs.h"
+#include "jpc_mct.h"
+#include "jpc_t2dec.h"
+#include "jpc_t1dec.h"
+#include "jpc_math.h"
+
+/******************************************************************************\
+*
+\******************************************************************************/
+
+#define JPC_MHSOC 0x0001
+ /* In the main header, expecting a SOC marker segment. */
+#define JPC_MHSIZ 0x0002
+ /* In the main header, expecting a SIZ marker segment. */
+#define JPC_MH 0x0004
+ /* In the main header, expecting "other" marker segments. */
+#define JPC_TPHSOT 0x0008
+ /* In a tile-part header, expecting a SOT marker segment. */
+#define JPC_TPH 0x0010
+ /* In a tile-part header, expecting "other" marker segments. */
+#define JPC_MT 0x0020
+ /* In the main trailer. */
+
+typedef struct {
+
+ uint_fast16_t id;
+ /* The marker segment type. */
+
+ int validstates;
+ /* The states in which this type of marker segment can be
+ validly encountered. */
+
+ int (*action)(jpc_dec_t *dec, jpc_ms_t *ms);
+ /* The action to take upon encountering this type of marker segment. */
+
+} jpc_dec_mstabent_t;
+
+/******************************************************************************\
+*
+\******************************************************************************/
+
+/* COD/COC parameters have been specified. */
+#define JPC_CSET 0x0001
+/* QCD/QCC parameters have been specified. */
+#define JPC_QSET 0x0002
+/* COD/COC parameters set from a COC marker segment. */
+#define JPC_COC 0x0004
+/* QCD/QCC parameters set from a QCC marker segment. */
+#define JPC_QCC 0x0008
+
+/******************************************************************************\
+* Local function prototypes.
+\******************************************************************************/
+
+static int jpc_dec_dump(jpc_dec_t *dec, FILE *out);
+
+jpc_ppxstab_t *jpc_ppxstab_create(void);
+void jpc_ppxstab_destroy(jpc_ppxstab_t *tab);
+int jpc_ppxstab_grow(jpc_ppxstab_t *tab, int maxents);
+int jpc_ppxstab_insert(jpc_ppxstab_t *tab, jpc_ppxstabent_t *ent);
+jpc_streamlist_t *jpc_ppmstabtostreams(jpc_ppxstab_t *tab);
+int jpc_pptstabwrite(jas_stream_t *out, jpc_ppxstab_t *tab);
+jpc_ppxstabent_t *jpc_ppxstabent_create(void);
+void jpc_ppxstabent_destroy(jpc_ppxstabent_t *ent);
+
+int jpc_streamlist_numstreams(jpc_streamlist_t *streamlist);
+jpc_streamlist_t *jpc_streamlist_create(void);
+int jpc_streamlist_insert(jpc_streamlist_t *streamlist, int streamno,
+ jas_stream_t *stream);
+jas_stream_t *jpc_streamlist_remove(jpc_streamlist_t *streamlist, int streamno);
+void jpc_streamlist_destroy(jpc_streamlist_t *streamlist);
+jas_stream_t *jpc_streamlist_get(jpc_streamlist_t *streamlist, int streamno);
+
+static void jpc_dec_cp_resetflags(jpc_dec_cp_t *cp);
+static jpc_dec_cp_t *jpc_dec_cp_create(uint_fast16_t numcomps);
+static int jpc_dec_cp_isvalid(jpc_dec_cp_t *cp);
+static jpc_dec_cp_t *jpc_dec_cp_copy(jpc_dec_cp_t *cp);
+static int jpc_dec_cp_setfromcod(jpc_dec_cp_t *cp, jpc_cod_t *cod);
+static int jpc_dec_cp_setfromcoc(jpc_dec_cp_t *cp, jpc_coc_t *coc);
+static int jpc_dec_cp_setfromcox(jpc_dec_cp_t *cp, jpc_dec_ccp_t *ccp,
+ jpc_coxcp_t *compparms, int flags);
+static int jpc_dec_cp_setfromqcd(jpc_dec_cp_t *cp, jpc_qcd_t *qcd);
+static int jpc_dec_cp_setfromqcc(jpc_dec_cp_t *cp, jpc_qcc_t *qcc);
+static int jpc_dec_cp_setfromqcx(jpc_dec_cp_t *cp, jpc_dec_ccp_t *ccp,
+ jpc_qcxcp_t *compparms, int flags);
+static int jpc_dec_cp_setfromrgn(jpc_dec_cp_t *cp, jpc_rgn_t *rgn);
+static int jpc_dec_cp_prepare(jpc_dec_cp_t *cp);
+static void jpc_dec_cp_destroy(jpc_dec_cp_t *cp);
+static int jpc_dec_cp_setfrompoc(jpc_dec_cp_t *cp, jpc_poc_t *poc, int reset);
+static int jpc_pi_addpchgfrompoc(jpc_pi_t *pi, jpc_poc_t *poc);
+
+static int jpc_dec_decode(jpc_dec_t *dec);
+static jpc_dec_t *jpc_dec_create(jpc_dec_importopts_t *impopts, jas_stream_t *in);
+static void jpc_dec_destroy(jpc_dec_t *dec);
+static void jpc_dequantize(jas_matrix_t *x, jpc_fix_t absstepsize);
+static void jpc_undo_roi(jas_matrix_t *x, int roishift, int bgshift, int numbps);
+static jpc_fix_t jpc_calcabsstepsize(int stepsize, int numbits);
+static int jpc_dec_tiledecode(jpc_dec_t *dec, jpc_dec_tile_t *tile);
+static int jpc_dec_tileinit(jpc_dec_t *dec, jpc_dec_tile_t *tile);
+static int jpc_dec_tilefini(jpc_dec_t *dec, jpc_dec_tile_t *tile);
+static int jpc_dec_process_soc(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_sot(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_sod(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_eoc(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_siz(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_cod(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_coc(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_rgn(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_qcd(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_qcc(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_poc(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_ppm(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_ppt(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_com(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_unk(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_process_crg(jpc_dec_t *dec, jpc_ms_t *ms);
+static int jpc_dec_parseopts(char *optstr, jpc_dec_importopts_t *opts);
+
+static jpc_dec_mstabent_t *jpc_dec_mstab_lookup(uint_fast16_t id);
+
+/******************************************************************************\
+* Global data.
+\******************************************************************************/
+
+jpc_dec_mstabent_t jpc_dec_mstab[] = {
+ {JPC_MS_SOC, JPC_MHSOC, jpc_dec_process_soc},
+ {JPC_MS_SOT, JPC_MH | JPC_TPHSOT, jpc_dec_process_sot},
+ {JPC_MS_SOD, JPC_TPH, jpc_dec_process_sod},
+ {JPC_MS_EOC, JPC_TPHSOT, jpc_dec_process_eoc},
+ {JPC_MS_SIZ, JPC_MHSIZ, jpc_dec_process_siz},
+ {JPC_MS_COD, JPC_MH | JPC_TPH, jpc_dec_process_cod},
+ {JPC_MS_COC, JPC_MH | JPC_TPH, jpc_dec_process_coc},
+ {JPC_MS_RGN, JPC_MH | JPC_TPH, jpc_dec_process_rgn},
+ {JPC_MS_QCD, JPC_MH | JPC_TPH, jpc_dec_process_qcd},
+ {JPC_MS_QCC, JPC_MH | JPC_TPH, jpc_dec_process_qcc},
+ {JPC_MS_POC, JPC_MH | JPC_TPH, jpc_dec_process_poc},
+ {JPC_MS_TLM, JPC_MH, 0},
+ {JPC_MS_PLM, JPC_MH, 0},
+ {JPC_MS_PLT, JPC_TPH, 0},
+ {JPC_MS_PPM, JPC_MH, jpc_dec_process_ppm},
+ {JPC_MS_PPT, JPC_TPH, jpc_dec_process_ppt},
+ {JPC_MS_SOP, 0, 0},
+ {JPC_MS_CRG, JPC_MH, jpc_dec_process_crg},
+ {JPC_MS_COM, JPC_MH | JPC_TPH, jpc_dec_process_com},
+ {0, JPC_MH | JPC_TPH, jpc_dec_process_unk}
+};
+
+/******************************************************************************\
+* The main entry point for the JPEG-2000 decoder.
+\******************************************************************************/
+
+jas_image_t *jpc_decode(jas_stream_t *in, char *optstr)
+{
+ jpc_dec_importopts_t opts;
+ jpc_dec_t *dec;
+ jas_image_t *image;
+
+ dec = 0;
+
+ if (jpc_dec_parseopts(optstr, &opts)) {
+ goto error;
+ }
+
+ jpc_initluts();
+
+ if (!(dec = jpc_dec_create(&opts, in))) {
+ goto error;
+ }
+
+ /* Do most of the work. */
+ if (jpc_dec_decode(dec)) {
+ goto error;
+ }
+
+ if (jas_image_numcmpts(dec->image) >= 3) {
+ jas_image_setclrspc(dec->image, JAS_CLRSPC_SRGB);
+ jas_image_setcmpttype(dec->image, 0,
+ JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R));
+ jas_image_setcmpttype(dec->image, 1,
+ JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G));
+ jas_image_setcmpttype(dec->image, 2,
+ JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B));
+ } else {
+ jas_image_setclrspc(dec->image, JAS_CLRSPC_SGRAY);
+ jas_image_setcmpttype(dec->image, 0,
+ JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y));
+ }
+
+ /* Save the return value. */
+ image = dec->image;
+
+ /* Stop the image from being discarded. */
+ dec->image = 0;
+
+ /* Destroy decoder. */
+ jpc_dec_destroy(dec);
+
+ return image;
+
+error:
+ if (dec) {
+ jpc_dec_destroy(dec);
+ }
+ return 0;
+}
+
+typedef enum {
+ OPT_MAXLYRS,
+ OPT_MAXPKTS,
+ OPT_DEBUG
+} optid_t;
+
+jas_taginfo_t decopts[] = {
+ {OPT_MAXLYRS, "maxlyrs"},
+ {OPT_MAXPKTS, "maxpkts"},
+ {OPT_DEBUG, "debug"},
+ {-1, 0}
+};
+
+static int jpc_dec_parseopts(char *optstr, jpc_dec_importopts_t *opts)
+{
+ jas_tvparser_t *tvp;
+
+ opts->debug = 0;
+ opts->maxlyrs = JPC_MAXLYRS;
+ opts->maxpkts = -1;
+
+ if (!(tvp = jas_tvparser_create(optstr ? optstr : ""))) {
+ return -1;
+ }
+
+ while (!jas_tvparser_next(tvp)) {
+ switch (jas_taginfo_nonull(jas_taginfos_lookup(decopts,
+ jas_tvparser_gettag(tvp)))->id) {
+ case OPT_MAXLYRS:
+ opts->maxlyrs = atoi(jas_tvparser_getval(tvp));
+ break;
+ case OPT_DEBUG:
+ opts->debug = atoi(jas_tvparser_getval(tvp));
+ break;
+ case OPT_MAXPKTS:
+ opts->maxpkts = atoi(jas_tvparser_getval(tvp));
+ break;
+ default:
+ fprintf(stderr, "warning: ignoring invalid option %s\n",
+ jas_tvparser_gettag(tvp));
+ break;
+ }
+ }
+
+ jas_tvparser_destroy(tvp);
+
+ return 0;
+}
+
+/******************************************************************************\
+* Code for table-driven code stream decoder.
+\******************************************************************************/
+
+static jpc_dec_mstabent_t *jpc_dec_mstab_lookup(uint_fast16_t id)
+{
+ jpc_dec_mstabent_t *mstabent;
+ for (mstabent = jpc_dec_mstab; mstabent->id != 0; ++mstabent) {
+ if (mstabent->id == id) {
+ break;
+ }
+ }
+ return mstabent;
+}
+
+static int jpc_dec_decode(jpc_dec_t *dec)
+{
+ jpc_ms_t *ms;
+ jpc_dec_mstabent_t *mstabent;
+ int ret;
+ jpc_cstate_t *cstate;
+
+ if (!(cstate = jpc_cstate_create())) {
+ return -1;
+ }
+ dec->cstate = cstate;
+
+ /* Initially, we should expect to encounter a SOC marker segment. */
+ dec->state = JPC_MHSOC;
+
+ for (;;) {
+
+ /* Get the next marker segment in the code stream. */
+ if (!(ms = jpc_getms(dec->in, cstate))) {
+ fprintf(stderr, "cannot get marker segment\n");
+ return -1;
+ }
+
+ mstabent = jpc_dec_mstab_lookup(ms->id);
+ assert(mstabent);
+
+ /* Ensure that this type of marker segment is permitted
+ at this point in the code stream. */
+ if (!(dec->state & mstabent->validstates)) {
+ fprintf(stderr, "unexpected marker segment type\n");
+ jpc_ms_destroy(ms);
+ return -1;
+ }
+
+ /* Process the marker segment. */
+ if (mstabent->action) {
+ ret = (*mstabent->action)(dec, ms);
+ } else {
+ /* No explicit action is required. */
+ ret = 0;
+ }
+
+ /* Destroy the marker segment. */
+ jpc_ms_destroy(ms);
+
+ if (ret < 0) {
+ return -1;
+ } else if (ret > 0) {
+ break;
+ }
+
+ }
+
+ return 0;
+}
+
+static int jpc_dec_process_crg(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ int cmptno;
+ jpc_dec_cmpt_t *cmpt;
+ jpc_crg_t *crg;
+
+ crg = &ms->parms.crg;
+ for (cmptno = 0, cmpt = dec->cmpts; cmptno < dec->numcomps; ++cmptno,
+ ++cmpt) {
+ /* Ignore the information in the CRG marker segment for now.
+ This information serves no useful purpose for decoding anyhow.
+ Some other parts of the code need to be changed if these lines
+ are uncommented.
+ cmpt->hsubstep = crg->comps[cmptno].hoff;
+ cmpt->vsubstep = crg->comps[cmptno].voff;
+ */
+ }
+ return 0;
+}
+
+static int jpc_dec_process_soc(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ /* Eliminate warnings about unused variables. */
+ ms = 0;
+
+ /* We should expect to encounter a SIZ marker segment next. */
+ dec->state = JPC_MHSIZ;
+
+ return 0;
+}
+
+static int jpc_dec_process_sot(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_dec_tile_t *tile;
+ jpc_sot_t *sot = &ms->parms.sot;
+ jas_image_cmptparm_t *compinfos;
+ jas_image_cmptparm_t *compinfo;
+ jpc_dec_cmpt_t *cmpt;
+ int cmptno;
+
+ if (dec->state == JPC_MH) {
+
+ compinfos = jas_malloc(dec->numcomps * sizeof(jas_image_cmptparm_t));
+ assert(compinfos);
+ for (cmptno = 0, cmpt = dec->cmpts, compinfo = compinfos;
+ cmptno < dec->numcomps; ++cmptno, ++cmpt, ++compinfo) {
+ compinfo->tlx = 0;
+ compinfo->tly = 0;
+ compinfo->prec = cmpt->prec;
+ compinfo->sgnd = cmpt->sgnd;
+ compinfo->width = cmpt->width;
+ compinfo->height = cmpt->height;
+ compinfo->hstep = cmpt->hstep;
+ compinfo->vstep = cmpt->vstep;
+ }
+
+ if (!(dec->image = jas_image_create(dec->numcomps, compinfos,
+ JAS_CLRSPC_UNKNOWN))) {
+ return -1;
+ }
+ jas_free(compinfos);
+
+ /* Is the packet header information stored in PPM marker segments in
+ the main header? */
+ if (dec->ppmstab) {
+ /* Convert the PPM marker segment data into a collection of streams
+ (one stream per tile-part). */
+ if (!(dec->pkthdrstreams = jpc_ppmstabtostreams(dec->ppmstab))) {
+ abort();
+ }
+ jpc_ppxstab_destroy(dec->ppmstab);
+ dec->ppmstab = 0;
+ }
+ }
+
+ if (sot->len > 0) {
+ dec->curtileendoff = jas_stream_getrwcount(dec->in) - ms->len -
+ 4 + sot->len;
+ } else {
+ dec->curtileendoff = 0;
+ }
+
+ if (JAS_CAST(int, sot->tileno) > dec->numtiles) {
+ fprintf(stderr, "invalid tile number in SOT marker segment\n");
+ return -1;
+ }
+ /* Set the current tile. */
+ dec->curtile = &dec->tiles[sot->tileno];
+ tile = dec->curtile;
+ /* Ensure that this is the expected part number. */
+ if (sot->partno != tile->partno) {
+ return -1;
+ }
+ if (tile->numparts > 0 && sot->partno >= tile->numparts) {
+ return -1;
+ }
+ if (!tile->numparts && sot->numparts > 0) {
+ tile->numparts = sot->numparts;
+ }
+
+ tile->pptstab = 0;
+
+ switch (tile->state) {
+ case JPC_TILE_INIT:
+ /* This is the first tile-part for this tile. */
+ tile->state = JPC_TILE_ACTIVE;
+ assert(!tile->cp);
+ if (!(tile->cp = jpc_dec_cp_copy(dec->cp))) {
+ return -1;
+ }
+ jpc_dec_cp_resetflags(dec->cp);
+ break;
+ default:
+ if (sot->numparts == sot->partno - 1) {
+ tile->state = JPC_TILE_ACTIVELAST;
+ }
+ break;
+ }
+
+ /* Note: We do not increment the expected tile-part number until
+ all processing for this tile-part is complete. */
+
+ /* We should expect to encounter other tile-part header marker
+ segments next. */
+ dec->state = JPC_TPH;
+
+ return 0;
+}
+
+static int jpc_dec_process_sod(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_dec_tile_t *tile;
+ int pos;
+
+ /* Eliminate compiler warnings about unused variables. */
+ ms = 0;
+
+ if (!(tile = dec->curtile)) {
+ return -1;
+ }
+
+ if (!tile->partno) {
+ if (!jpc_dec_cp_isvalid(tile->cp)) {
+ return -1;
+ }
+ jpc_dec_cp_prepare(tile->cp);
+ if (jpc_dec_tileinit(dec, tile)) {
+ return -1;
+ }
+ }
+
+ /* Are packet headers stored in the main header or tile-part header? */
+ if (dec->pkthdrstreams) {
+ /* Get the stream containing the packet header data for this
+ tile-part. */
+ if (!(tile->pkthdrstream = jpc_streamlist_remove(dec->pkthdrstreams, 0))) {
+ return -1;
+ }
+ }
+
+ if (tile->pptstab) {
+ if (!tile->pkthdrstream) {
+ if (!(tile->pkthdrstream = jas_stream_memopen(0, 0))) {
+ return -1;
+ }
+ }
+ pos = jas_stream_tell(tile->pkthdrstream);
+ jas_stream_seek(tile->pkthdrstream, 0, SEEK_END);
+ if (jpc_pptstabwrite(tile->pkthdrstream, tile->pptstab)) {
+ return -1;
+ }
+ jas_stream_seek(tile->pkthdrstream, pos, SEEK_SET);
+ jpc_ppxstab_destroy(tile->pptstab);
+ tile->pptstab = 0;
+ }
+
+ if (jas_getdbglevel() >= 10) {
+ jpc_dec_dump(dec, stderr);
+ }
+
+ if (jpc_dec_decodepkts(dec, (tile->pkthdrstream) ? tile->pkthdrstream :
+ dec->in, dec->in)) {
+ fprintf(stderr, "jpc_dec_decodepkts failed\n");
+ return -1;
+ }
+
+ /* Gobble any unconsumed tile data. */
+ if (dec->curtileendoff > 0) {
+ long curoff;
+ uint_fast32_t n;
+ curoff = jas_stream_getrwcount(dec->in);
+ if (curoff < dec->curtileendoff) {
+ n = dec->curtileendoff - curoff;
+ fprintf(stderr,
+ "warning: ignoring trailing garbage (%lu bytes)\n",
+ (unsigned long) n);
+
+ while (n-- > 0) {
+ if (jas_stream_getc(dec->in) == EOF) {
+ fprintf(stderr, "read error\n");
+ return -1;
+ }
+ }
+ } else if (curoff > dec->curtileendoff) {
+ fprintf(stderr,
+ "warning: not enough tile data (%lu bytes)\n",
+ (unsigned long) curoff - dec->curtileendoff);
+ }
+
+ }
+
+ if (tile->numparts > 0 && tile->partno == tile->numparts - 1) {
+ if (jpc_dec_tiledecode(dec, tile)) {
+ return -1;
+ }
+ jpc_dec_tilefini(dec, tile);
+ }
+
+ dec->curtile = 0;
+
+ /* Increment the expected tile-part number. */
+ ++tile->partno;
+
+ /* We should expect to encounter a SOT marker segment next. */
+ dec->state = JPC_TPHSOT;
+
+ return 0;
+}
+
+static int jpc_dec_tileinit(jpc_dec_t *dec, jpc_dec_tile_t *tile)
+{
+ jpc_dec_tcomp_t *tcomp;
+ int compno;
+ int rlvlno;
+ jpc_dec_rlvl_t *rlvl;
+ jpc_dec_band_t *band;
+ jpc_dec_prc_t *prc;
+ int bndno;
+ jpc_tsfb_band_t *bnd;
+ int bandno;
+ jpc_dec_ccp_t *ccp;
+ int prccnt;
+ jpc_dec_cblk_t *cblk;
+ int cblkcnt;
+ uint_fast32_t tlprcxstart;
+ uint_fast32_t tlprcystart;
+ uint_fast32_t brprcxend;
+ uint_fast32_t brprcyend;
+ uint_fast32_t tlcbgxstart;
+ uint_fast32_t tlcbgystart;
+ uint_fast32_t brcbgxend;
+ uint_fast32_t brcbgyend;
+ uint_fast32_t cbgxstart;
+ uint_fast32_t cbgystart;
+ uint_fast32_t cbgxend;
+ uint_fast32_t cbgyend;
+ uint_fast32_t tlcblkxstart;
+ uint_fast32_t tlcblkystart;
+ uint_fast32_t brcblkxend;
+ uint_fast32_t brcblkyend;
+ uint_fast32_t cblkxstart;
+ uint_fast32_t cblkystart;
+ uint_fast32_t cblkxend;
+ uint_fast32_t cblkyend;
+ uint_fast32_t tmpxstart;
+ uint_fast32_t tmpystart;
+ uint_fast32_t tmpxend;
+ uint_fast32_t tmpyend;
+ jpc_dec_cp_t *cp;
+ jpc_tsfb_band_t bnds[64];
+ jpc_pchg_t *pchg;
+ int pchgno;
+ jpc_dec_cmpt_t *cmpt;
+
+ cp = tile->cp;
+ tile->realmode = 0;
+ if (cp->mctid == JPC_MCT_ICT) {
+ tile->realmode = 1;
+ }
+
+ for (compno = 0, tcomp = tile->tcomps, cmpt = dec->cmpts; compno <
+ dec->numcomps; ++compno, ++tcomp, ++cmpt) {
+ ccp = &tile->cp->ccps[compno];
+ if (ccp->qmfbid == JPC_COX_INS) {
+ tile->realmode = 1;
+ }
+ tcomp->numrlvls = ccp->numrlvls;
+ if (!(tcomp->rlvls = jas_malloc(tcomp->numrlvls *
+ sizeof(jpc_dec_rlvl_t)))) {
+ return -1;
+ }
+ if (!(tcomp->data = jas_seq2d_create(JPC_CEILDIV(tile->xstart,
+ cmpt->hstep), JPC_CEILDIV(tile->ystart, cmpt->vstep),
+ JPC_CEILDIV(tile->xend, cmpt->hstep), JPC_CEILDIV(tile->yend,
+ cmpt->vstep)))) {
+ return -1;
+ }
+ if (!(tcomp->tsfb = jpc_cod_gettsfb(ccp->qmfbid,
+ tcomp->numrlvls - 1))) {
+ return -1;
+ }
+{
+ jpc_tsfb_getbands(tcomp->tsfb, jas_seq2d_xstart(tcomp->data), jas_seq2d_ystart(tcomp->data), jas_seq2d_xend(tcomp->data), jas_seq2d_yend(tcomp->data), bnds);
+}
+ for (rlvlno = 0, rlvl = tcomp->rlvls; rlvlno < tcomp->numrlvls;
+ ++rlvlno, ++rlvl) {
+rlvl->bands = 0;
+ rlvl->xstart = JPC_CEILDIVPOW2(tcomp->xstart,
+ tcomp->numrlvls - 1 - rlvlno);
+ rlvl->ystart = JPC_CEILDIVPOW2(tcomp->ystart,
+ tcomp->numrlvls - 1 - rlvlno);
+ rlvl->xend = JPC_CEILDIVPOW2(tcomp->xend,
+ tcomp->numrlvls - 1 - rlvlno);
+ rlvl->yend = JPC_CEILDIVPOW2(tcomp->yend,
+ tcomp->numrlvls - 1 - rlvlno);
+ rlvl->prcwidthexpn = ccp->prcwidthexpns[rlvlno];
+ rlvl->prcheightexpn = ccp->prcheightexpns[rlvlno];
+ tlprcxstart = JPC_FLOORDIVPOW2(rlvl->xstart,
+ rlvl->prcwidthexpn) << rlvl->prcwidthexpn;
+ tlprcystart = JPC_FLOORDIVPOW2(rlvl->ystart,
+ rlvl->prcheightexpn) << rlvl->prcheightexpn;
+ brprcxend = JPC_CEILDIVPOW2(rlvl->xend,
+ rlvl->prcwidthexpn) << rlvl->prcwidthexpn;
+ brprcyend = JPC_CEILDIVPOW2(rlvl->yend,
+ rlvl->prcheightexpn) << rlvl->prcheightexpn;
+ rlvl->numhprcs = (brprcxend - tlprcxstart) >>
+ rlvl->prcwidthexpn;
+ rlvl->numvprcs = (brprcyend - tlprcystart) >>
+ rlvl->prcheightexpn;
+ rlvl->numprcs = rlvl->numhprcs * rlvl->numvprcs;
+
+ if (rlvl->xstart >= rlvl->xend || rlvl->ystart >= rlvl->yend) {
+ rlvl->bands = 0;
+ rlvl->numprcs = 0;
+ rlvl->numhprcs = 0;
+ rlvl->numvprcs = 0;
+ continue;
+ }
+ if (!rlvlno) {
+ tlcbgxstart = tlprcxstart;
+ tlcbgystart = tlprcystart;
+ brcbgxend = brprcxend;
+ brcbgyend = brprcyend;
+ rlvl->cbgwidthexpn = rlvl->prcwidthexpn;
+ rlvl->cbgheightexpn = rlvl->prcheightexpn;
+ } else {
+ tlcbgxstart = JPC_CEILDIVPOW2(tlprcxstart, 1);
+ tlcbgystart = JPC_CEILDIVPOW2(tlprcystart, 1);
+ brcbgxend = JPC_CEILDIVPOW2(brprcxend, 1);
+ brcbgyend = JPC_CEILDIVPOW2(brprcyend, 1);
+ rlvl->cbgwidthexpn = rlvl->prcwidthexpn - 1;
+ rlvl->cbgheightexpn = rlvl->prcheightexpn - 1;
+ }
+ rlvl->cblkwidthexpn = JAS_MIN(ccp->cblkwidthexpn,
+ rlvl->cbgwidthexpn);
+ rlvl->cblkheightexpn = JAS_MIN(ccp->cblkheightexpn,
+ rlvl->cbgheightexpn);
+
+ rlvl->numbands = (!rlvlno) ? 1 : 3;
+ if (!(rlvl->bands = jas_malloc(rlvl->numbands *
+ sizeof(jpc_dec_band_t)))) {
+ return -1;
+ }
+ for (bandno = 0, band = rlvl->bands;
+ bandno < rlvl->numbands; ++bandno, ++band) {
+ bndno = (!rlvlno) ? 0 : (3 * (rlvlno - 1) +
+ bandno + 1);
+ bnd = &bnds[bndno];
+
+ band->orient = bnd->orient;
+ band->stepsize = ccp->stepsizes[bndno];
+ band->analgain = JPC_NOMINALGAIN(ccp->qmfbid,
+ tcomp->numrlvls - 1, rlvlno, band->orient);
+ band->absstepsize = jpc_calcabsstepsize(band->stepsize,
+ cmpt->prec + band->analgain);
+ band->numbps = ccp->numguardbits +
+ JPC_QCX_GETEXPN(band->stepsize) - 1;
+ band->roishift = (ccp->roishift + band->numbps >= JPC_PREC) ?
+ (JPC_PREC - 1 - band->numbps) : ccp->roishift;
+ band->data = 0;
+ band->prcs = 0;
+ if (bnd->xstart == bnd->xend || bnd->ystart == bnd->yend) {
+ continue;
+ }
+ if (!(band->data = jas_seq2d_create(0, 0, 0, 0))) {
+ return -1;
+ }
+ jas_seq2d_bindsub(band->data, tcomp->data, bnd->locxstart, bnd->locystart, bnd->locxend, bnd->locyend);
+ jas_seq2d_setshift(band->data, bnd->xstart, bnd->ystart);
+
+ assert(rlvl->numprcs);
+
+ if (!(band->prcs = jas_malloc(rlvl->numprcs * sizeof(jpc_dec_prc_t)))) {
+ return -1;
+ }
+
+/************************************************/
+ cbgxstart = tlcbgxstart;
+ cbgystart = tlcbgystart;
+ for (prccnt = rlvl->numprcs, prc = band->prcs;
+ prccnt > 0; --prccnt, ++prc) {
+ cbgxend = cbgxstart + (1 << rlvl->cbgwidthexpn);
+ cbgyend = cbgystart + (1 << rlvl->cbgheightexpn);
+ prc->xstart = JAS_MAX(cbgxstart, JAS_CAST(uint_fast32_t, jas_seq2d_xstart(band->data)));
+ prc->ystart = JAS_MAX(cbgystart, JAS_CAST(uint_fast32_t, jas_seq2d_ystart(band->data)));
+ prc->xend = JAS_MIN(cbgxend, JAS_CAST(uint_fast32_t, jas_seq2d_xend(band->data)));
+ prc->yend = JAS_MIN(cbgyend, JAS_CAST(uint_fast32_t, jas_seq2d_yend(band->data)));
+ if (prc->xend > prc->xstart && prc->yend > prc->ystart) {
+ tlcblkxstart = JPC_FLOORDIVPOW2(prc->xstart,
+ rlvl->cblkwidthexpn) << rlvl->cblkwidthexpn;
+ tlcblkystart = JPC_FLOORDIVPOW2(prc->ystart,
+ rlvl->cblkheightexpn) << rlvl->cblkheightexpn;
+ brcblkxend = JPC_CEILDIVPOW2(prc->xend,
+ rlvl->cblkwidthexpn) << rlvl->cblkwidthexpn;
+ brcblkyend = JPC_CEILDIVPOW2(prc->yend,
+ rlvl->cblkheightexpn) << rlvl->cblkheightexpn;
+ prc->numhcblks = (brcblkxend - tlcblkxstart) >>
+ rlvl->cblkwidthexpn;
+ prc->numvcblks = (brcblkyend - tlcblkystart) >>
+ rlvl->cblkheightexpn;
+ prc->numcblks = prc->numhcblks * prc->numvcblks;
+ assert(prc->numcblks > 0);
+
+ if (!(prc->incltagtree = jpc_tagtree_create(prc->numhcblks, prc->numvcblks))) {
+ return -1;
+ }
+ if (!(prc->numimsbstagtree = jpc_tagtree_create(prc->numhcblks, prc->numvcblks))) {
+ return -1;
+ }
+ if (!(prc->cblks = jas_malloc(prc->numcblks * sizeof(jpc_dec_cblk_t)))) {
+ return -1;
+ }
+
+ cblkxstart = cbgxstart;
+ cblkystart = cbgystart;
+ for (cblkcnt = prc->numcblks, cblk = prc->cblks; cblkcnt > 0;) {
+ cblkxend = cblkxstart + (1 << rlvl->cblkwidthexpn);
+ cblkyend = cblkystart + (1 << rlvl->cblkheightexpn);
+ tmpxstart = JAS_MAX(cblkxstart, prc->xstart);
+ tmpystart = JAS_MAX(cblkystart, prc->ystart);
+ tmpxend = JAS_MIN(cblkxend, prc->xend);
+ tmpyend = JAS_MIN(cblkyend, prc->yend);
+ if (tmpxend > tmpxstart && tmpyend > tmpystart) {
+ cblk->firstpassno = -1;
+ cblk->mqdec = 0;
+ cblk->nulldec = 0;
+ cblk->flags = 0;
+ cblk->numpasses = 0;
+ cblk->segs.head = 0;
+ cblk->segs.tail = 0;
+ cblk->curseg = 0;
+ cblk->numimsbs = 0;
+ cblk->numlenbits = 3;
+ cblk->flags = 0;
+ if (!(cblk->data = jas_seq2d_create(0, 0, 0, 0))) {
+ return -1;
+ }
+ jas_seq2d_bindsub(cblk->data, band->data, tmpxstart, tmpystart, tmpxend, tmpyend);
+ ++cblk;
+ --cblkcnt;
+ }
+ cblkxstart += 1 << rlvl->cblkwidthexpn;
+ if (cblkxstart >= cbgxend) {
+ cblkxstart = cbgxstart;
+ cblkystart += 1 << rlvl->cblkheightexpn;
+ }
+ }
+
+ } else {
+ prc->cblks = 0;
+ prc->incltagtree = 0;
+ prc->numimsbstagtree = 0;
+ }
+ cbgxstart += 1 << rlvl->cbgwidthexpn;
+ if (cbgxstart >= brcbgxend) {
+ cbgxstart = tlcbgxstart;
+ cbgystart += 1 << rlvl->cbgheightexpn;
+ }
+
+ }
+/********************************************/
+ }
+ }
+ }
+
+if (!(tile->pi = jpc_dec_pi_create(dec, tile)))
+{
+ return -1;
+}
+
+ for (pchgno = 0; pchgno < jpc_pchglist_numpchgs(tile->cp->pchglist);
+ ++pchgno) {
+ pchg = jpc_pchg_copy(jpc_pchglist_get(tile->cp->pchglist, pchgno));
+ assert(pchg);
+ jpc_pi_addpchg(tile->pi, pchg);
+ }
+ jpc_pi_init(tile->pi);
+
+ return 0;
+}
+
+static int jpc_dec_tilefini(jpc_dec_t *dec, jpc_dec_tile_t *tile)
+{
+ jpc_dec_tcomp_t *tcomp;
+ int compno;
+ int bandno;
+ int rlvlno;
+ jpc_dec_band_t *band;
+ jpc_dec_rlvl_t *rlvl;
+ int prcno;
+ jpc_dec_prc_t *prc;
+ jpc_dec_seg_t *seg;
+ jpc_dec_cblk_t *cblk;
+ int cblkno;
+
+if (tile->tcomps) {
+
+ for (compno = 0, tcomp = tile->tcomps; compno < dec->numcomps;
+ ++compno, ++tcomp) {
+ for (rlvlno = 0, rlvl = tcomp->rlvls; rlvlno < tcomp->numrlvls;
+ ++rlvlno, ++rlvl) {
+if (!rlvl->bands) {
+ continue;
+}
+ for (bandno = 0, band = rlvl->bands; bandno < rlvl->numbands; ++bandno, ++band) {
+if (band->prcs) {
+ for (prcno = 0, prc = band->prcs; prcno <
+ rlvl->numprcs; ++prcno, ++prc) {
+if (!prc->cblks) {
+ continue;
+}
+ for (cblkno = 0, cblk = prc->cblks; cblkno < prc->numcblks; ++cblkno, ++cblk) {
+
+ while (cblk->segs.head) {
+ seg = cblk->segs.head;
+ jpc_seglist_remove(&cblk->segs, seg);
+ jpc_seg_destroy(seg);
+ }
+ jas_matrix_destroy(cblk->data);
+ if (cblk->mqdec) {
+ jpc_mqdec_destroy(cblk->mqdec);
+ }
+ if (cblk->nulldec) {
+ jpc_bitstream_close(cblk->nulldec);
+ }
+ if (cblk->flags) {
+ jas_matrix_destroy(cblk->flags);
+ }
+ }
+ if (prc->incltagtree) {
+ jpc_tagtree_destroy(prc->incltagtree);
+ }
+ if (prc->numimsbstagtree) {
+ jpc_tagtree_destroy(prc->numimsbstagtree);
+ }
+ if (prc->cblks) {
+ jas_free(prc->cblks);
+ }
+ }
+}
+ if (band->data) {
+ jas_matrix_destroy(band->data);
+ }
+ if (band->prcs) {
+ jas_free(band->prcs);
+ }
+ }
+ if (rlvl->bands) {
+ jas_free(rlvl->bands);
+ }
+ }
+ if (tcomp->rlvls) {
+ jas_free(tcomp->rlvls);
+ }
+ if (tcomp->data) {
+ jas_matrix_destroy(tcomp->data);
+ }
+ if (tcomp->tsfb) {
+ jpc_tsfb_destroy(tcomp->tsfb);
+ }
+ }
+}
+ if (tile->cp) {
+ jpc_dec_cp_destroy(tile->cp);
+ tile->cp = 0;
+ }
+ if (tile->tcomps) {
+ jas_free(tile->tcomps);
+ tile->tcomps = 0;
+ }
+ if (tile->pi) {
+ jpc_pi_destroy(tile->pi);
+ tile->pi = 0;
+ }
+ if (tile->pkthdrstream) {
+ jas_stream_close(tile->pkthdrstream);
+ tile->pkthdrstream = 0;
+ }
+ if (tile->pptstab) {
+ jpc_ppxstab_destroy(tile->pptstab);
+ tile->pptstab = 0;
+ }
+
+ tile->state = JPC_TILE_DONE;
+
+ return 0;
+}
+
+static int jpc_dec_tiledecode(jpc_dec_t *dec, jpc_dec_tile_t *tile)
+{
+ int i;
+ int j;
+ jpc_dec_tcomp_t *tcomp;
+ jpc_dec_rlvl_t *rlvl;
+ jpc_dec_band_t *band;
+ int compno;
+ int rlvlno;
+ int bandno;
+ int adjust;
+ int v;
+ jpc_dec_ccp_t *ccp;
+ jpc_dec_cmpt_t *cmpt;
+
+ if (jpc_dec_decodecblks(dec, tile)) {
+ fprintf(stderr, "jpc_dec_decodecblks failed\n");
+ return -1;
+ }
+
+ /* Perform dequantization. */
+ for (compno = 0, tcomp = tile->tcomps; compno < dec->numcomps;
+ ++compno, ++tcomp) {
+ ccp = &tile->cp->ccps[compno];
+ for (rlvlno = 0, rlvl = tcomp->rlvls; rlvlno < tcomp->numrlvls;
+ ++rlvlno, ++rlvl) {
+ if (!rlvl->bands) {
+ continue;
+ }
+ for (bandno = 0, band = rlvl->bands;
+ bandno < rlvl->numbands; ++bandno, ++band) {
+ if (!band->data) {
+ continue;
+ }
+ jpc_undo_roi(band->data, band->roishift, ccp->roishift -
+ band->roishift, band->numbps);
+ if (tile->realmode) {
+ jas_matrix_asl(band->data, JPC_FIX_FRACBITS);
+ jpc_dequantize(band->data, band->absstepsize);
+ }
+
+ }
+ }
+ }
+
+ /* Apply an inverse wavelet transform if necessary. */
+ for (compno = 0, tcomp = tile->tcomps; compno < dec->numcomps;
+ ++compno, ++tcomp) {
+ ccp = &tile->cp->ccps[compno];
+ jpc_tsfb_synthesize(tcomp->tsfb, ((ccp->qmfbid ==
+ JPC_COX_RFT) ? JPC_TSFB_RITIMODE : 0), tcomp->data);
+ }
+
+
+ /* Apply an inverse intercomponent transform if necessary. */
+ switch (tile->cp->mctid) {
+ case JPC_MCT_RCT:
+ assert(dec->numcomps == 3);
+ jpc_irct(tile->tcomps[0].data, tile->tcomps[1].data,
+ tile->tcomps[2].data);
+ break;
+ case JPC_MCT_ICT:
+ assert(dec->numcomps == 3);
+ jpc_iict(tile->tcomps[0].data, tile->tcomps[1].data,
+ tile->tcomps[2].data);
+ break;
+ }
+
+ /* Perform rounding and convert to integer values. */
+ if (tile->realmode) {
+ for (compno = 0, tcomp = tile->tcomps; compno < dec->numcomps;
+ ++compno, ++tcomp) {
+ for (i = 0; i < jas_matrix_numrows(tcomp->data); ++i) {
+ for (j = 0; j < jas_matrix_numcols(tcomp->data); ++j) {
+ v = jas_matrix_get(tcomp->data, i, j);
+ v = jpc_fix_round(v);
+ jas_matrix_set(tcomp->data, i, j, jpc_fixtoint(v));
+ }
+ }
+ }
+ }
+
+ /* Perform level shift. */
+ for (compno = 0, tcomp = tile->tcomps, cmpt = dec->cmpts; compno <
+ dec->numcomps; ++compno, ++tcomp, ++cmpt) {
+ adjust = cmpt->sgnd ? 0 : (1 << (cmpt->prec - 1));
+ for (i = 0; i < jas_matrix_numrows(tcomp->data); ++i) {
+ for (j = 0; j < jas_matrix_numcols(tcomp->data); ++j) {
+ *jas_matrix_getref(tcomp->data, i, j) += adjust;
+ }
+ }
+ }
+
+ /* Perform clipping. */
+ for (compno = 0, tcomp = tile->tcomps, cmpt = dec->cmpts; compno <
+ dec->numcomps; ++compno, ++tcomp, ++cmpt) {
+ jpc_fix_t mn;
+ jpc_fix_t mx;
+ mn = cmpt->sgnd ? (-(1 << (cmpt->prec - 1))) : (0);
+ mx = cmpt->sgnd ? ((1 << (cmpt->prec - 1)) - 1) : ((1 <<
+ cmpt->prec) - 1);
+ jas_matrix_clip(tcomp->data, mn, mx);
+ }
+
+ /* XXX need to free tsfb struct */
+
+ /* Write the data for each component of the image. */
+ for (compno = 0, tcomp = tile->tcomps, cmpt = dec->cmpts; compno <
+ dec->numcomps; ++compno, ++tcomp, ++cmpt) {
+ if (jas_image_writecmpt(dec->image, compno, tcomp->xstart -
+ JPC_CEILDIV(dec->xstart, cmpt->hstep), tcomp->ystart -
+ JPC_CEILDIV(dec->ystart, cmpt->vstep), jas_matrix_numcols(
+ tcomp->data), jas_matrix_numrows(tcomp->data), tcomp->data)) {
+ fprintf(stderr, "write component failed\n");
+ return -4;
+ }
+ }
+
+ return 0;
+}
+
+static int jpc_dec_process_eoc(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ int tileno;
+ jpc_dec_tile_t *tile;
+
+ /* Eliminate compiler warnings about unused variables. */
+ ms = 0;
+
+ for (tileno = 0, tile = dec->tiles; tileno < dec->numtiles; ++tileno,
+ ++tile) {
+ if (tile->state == JPC_TILE_ACTIVE) {
+ if (jpc_dec_tiledecode(dec, tile)) {
+ return -1;
+ }
+ }
+ jpc_dec_tilefini(dec, tile);
+ }
+
+ /* We are done processing the code stream. */
+ dec->state = JPC_MT;
+
+ return 1;
+}
+
+static int jpc_dec_process_siz(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_siz_t *siz = &ms->parms.siz;
+ int compno;
+ int tileno;
+ jpc_dec_tile_t *tile;
+ jpc_dec_tcomp_t *tcomp;
+ int htileno;
+ int vtileno;
+ jpc_dec_cmpt_t *cmpt;
+
+ dec->xstart = siz->xoff;
+ dec->ystart = siz->yoff;
+ dec->xend = siz->width;
+ dec->yend = siz->height;
+ dec->tilewidth = siz->tilewidth;
+ dec->tileheight = siz->tileheight;
+ dec->tilexoff = siz->tilexoff;
+ dec->tileyoff = siz->tileyoff;
+ dec->numcomps = siz->numcomps;
+ if (!(dec->cp = jpc_dec_cp_create(dec->numcomps))) {
+ return -1;
+ }
+
+ if (!(dec->cmpts = jas_malloc(dec->numcomps * sizeof(jpc_dec_cmpt_t)))) {
+ return -1;
+ }
+
+ for (compno = 0, cmpt = dec->cmpts; compno < dec->numcomps; ++compno,
+ ++cmpt) {
+ cmpt->prec = siz->comps[compno].prec;
+ cmpt->sgnd = siz->comps[compno].sgnd;
+ cmpt->hstep = siz->comps[compno].hsamp;
+ cmpt->vstep = siz->comps[compno].vsamp;
+ cmpt->width = JPC_CEILDIV(dec->xend, cmpt->hstep) -
+ JPC_CEILDIV(dec->xstart, cmpt->hstep);
+ cmpt->height = JPC_CEILDIV(dec->yend, cmpt->vstep) -
+ JPC_CEILDIV(dec->ystart, cmpt->vstep);
+ cmpt->hsubstep = 0;
+ cmpt->vsubstep = 0;
+ }
+
+ dec->image = 0;
+
+ dec->numhtiles = JPC_CEILDIV(dec->xend - dec->tilexoff, dec->tilewidth);
+ dec->numvtiles = JPC_CEILDIV(dec->yend - dec->tileyoff, dec->tileheight);
+ dec->numtiles = dec->numhtiles * dec->numvtiles;
+ if (!(dec->tiles = jas_malloc(dec->numtiles * sizeof(jpc_dec_tile_t)))) {
+ return -1;
+ }
+
+ for (tileno = 0, tile = dec->tiles; tileno < dec->numtiles; ++tileno,
+ ++tile) {
+ htileno = tileno % dec->numhtiles;
+ vtileno = tileno / dec->numhtiles;
+ tile->realmode = 0;
+ tile->state = JPC_TILE_INIT;
+ tile->xstart = JAS_MAX(dec->tilexoff + htileno * dec->tilewidth,
+ dec->xstart);
+ tile->ystart = JAS_MAX(dec->tileyoff + vtileno * dec->tileheight,
+ dec->ystart);
+ tile->xend = JAS_MIN(dec->tilexoff + (htileno + 1) *
+ dec->tilewidth, dec->xend);
+ tile->yend = JAS_MIN(dec->tileyoff + (vtileno + 1) *
+ dec->tileheight, dec->yend);
+ tile->numparts = 0;
+ tile->partno = 0;
+ tile->pkthdrstream = 0;
+ tile->pkthdrstreampos = 0;
+ tile->pptstab = 0;
+ tile->cp = 0;
+ if (!(tile->tcomps = jas_malloc(dec->numcomps *
+ sizeof(jpc_dec_tcomp_t)))) {
+ return -1;
+ }
+ for (compno = 0, cmpt = dec->cmpts, tcomp = tile->tcomps;
+ compno < dec->numcomps; ++compno, ++cmpt, ++tcomp) {
+ tcomp->rlvls = 0;
+ tcomp->data = 0;
+ tcomp->xstart = JPC_CEILDIV(tile->xstart, cmpt->hstep);
+ tcomp->ystart = JPC_CEILDIV(tile->ystart, cmpt->vstep);
+ tcomp->xend = JPC_CEILDIV(tile->xend, cmpt->hstep);
+ tcomp->yend = JPC_CEILDIV(tile->yend, cmpt->vstep);
+ tcomp->tsfb = 0;
+ }
+ }
+
+ dec->pkthdrstreams = 0;
+
+ /* We should expect to encounter other main header marker segments
+ or an SOT marker segment next. */
+ dec->state = JPC_MH;
+
+ return 0;
+}
+
+static int jpc_dec_process_cod(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_cod_t *cod = &ms->parms.cod;
+ jpc_dec_tile_t *tile;
+
+ switch (dec->state) {
+ case JPC_MH:
+ jpc_dec_cp_setfromcod(dec->cp, cod);
+ break;
+ case JPC_TPH:
+ if (!(tile = dec->curtile)) {
+ return -1;
+ }
+ if (tile->partno != 0) {
+ return -1;
+ }
+ jpc_dec_cp_setfromcod(tile->cp, cod);
+ break;
+ }
+ return 0;
+}
+
+static int jpc_dec_process_coc(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_coc_t *coc = &ms->parms.coc;
+ jpc_dec_tile_t *tile;
+
+ if (JAS_CAST(int, coc->compno) > dec->numcomps) {
+ fprintf(stderr,
+ "invalid component number in COC marker segment\n");
+ return -1;
+ }
+ switch (dec->state) {
+ case JPC_MH:
+ jpc_dec_cp_setfromcoc(dec->cp, coc);
+ break;
+ case JPC_TPH:
+ if (!(tile = dec->curtile)) {
+ return -1;
+ }
+ if (tile->partno > 0) {
+ return -1;
+ }
+ jpc_dec_cp_setfromcoc(tile->cp, coc);
+ break;
+ }
+ return 0;
+}
+
+static int jpc_dec_process_rgn(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_rgn_t *rgn = &ms->parms.rgn;
+ jpc_dec_tile_t *tile;
+
+ if (JAS_CAST(int, rgn->compno) > dec->numcomps) {
+ fprintf(stderr,
+ "invalid component number in RGN marker segment\n");
+ return -1;
+ }
+ switch (dec->state) {
+ case JPC_MH:
+ jpc_dec_cp_setfromrgn(dec->cp, rgn);
+ break;
+ case JPC_TPH:
+ if (!(tile = dec->curtile)) {
+ return -1;
+ }
+ if (tile->partno > 0) {
+ return -1;
+ }
+ jpc_dec_cp_setfromrgn(tile->cp, rgn);
+ break;
+ }
+
+ return 0;
+}
+
+static int jpc_dec_process_qcd(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_qcd_t *qcd = &ms->parms.qcd;
+ jpc_dec_tile_t *tile;
+
+ switch (dec->state) {
+ case JPC_MH:
+ jpc_dec_cp_setfromqcd(dec->cp, qcd);
+ break;
+ case JPC_TPH:
+ if (!(tile = dec->curtile)) {
+ return -1;
+ }
+ if (tile->partno > 0) {
+ return -1;
+ }
+ jpc_dec_cp_setfromqcd(tile->cp, qcd);
+ break;
+ }
+ return 0;
+}
+
+static int jpc_dec_process_qcc(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_qcc_t *qcc = &ms->parms.qcc;
+ jpc_dec_tile_t *tile;
+
+ if (JAS_CAST(int, qcc->compno) > dec->numcomps) {
+ fprintf(stderr,
+ "invalid component number in QCC marker segment\n");
+ return -1;
+ }
+ switch (dec->state) {
+ case JPC_MH:
+ jpc_dec_cp_setfromqcc(dec->cp, qcc);
+ break;
+ case JPC_TPH:
+ if (!(tile = dec->curtile)) {
+ return -1;
+ }
+ if (tile->partno > 0) {
+ return -1;
+ }
+ jpc_dec_cp_setfromqcc(tile->cp, qcc);
+ break;
+ }
+ return 0;
+}
+
+static int jpc_dec_process_poc(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_poc_t *poc = &ms->parms.poc;
+ jpc_dec_tile_t *tile;
+ switch (dec->state) {
+ case JPC_MH:
+ if (jpc_dec_cp_setfrompoc(dec->cp, poc, 1)) {
+ return -1;
+ }
+ break;
+ case JPC_TPH:
+ if (!(tile = dec->curtile)) {
+ return -1;
+ }
+ if (!tile->partno) {
+ if (jpc_dec_cp_setfrompoc(tile->cp, poc, (!tile->partno))) {
+ return -1;
+ }
+ } else {
+ jpc_pi_addpchgfrompoc(tile->pi, poc);
+ }
+ break;
+ }
+ return 0;
+}
+
+static int jpc_dec_process_ppm(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_ppm_t *ppm = &ms->parms.ppm;
+ jpc_ppxstabent_t *ppmstabent;
+
+ if (!dec->ppmstab) {
+ if (!(dec->ppmstab = jpc_ppxstab_create())) {
+ return -1;
+ }
+ }
+
+ if (!(ppmstabent = jpc_ppxstabent_create())) {
+ return -1;
+ }
+ ppmstabent->ind = ppm->ind;
+ ppmstabent->data = ppm->data;
+ ppm->data = 0;
+ ppmstabent->len = ppm->len;
+ if (jpc_ppxstab_insert(dec->ppmstab, ppmstabent)) {
+ return -1;
+ }
+ return 0;
+}
+
+static int jpc_dec_process_ppt(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ jpc_ppt_t *ppt = &ms->parms.ppt;
+ jpc_dec_tile_t *tile;
+ jpc_ppxstabent_t *pptstabent;
+
+ tile = dec->curtile;
+ if (!tile->pptstab) {
+ if (!(tile->pptstab = jpc_ppxstab_create())) {
+ return -1;
+ }
+ }
+ if (!(pptstabent = jpc_ppxstabent_create())) {
+ return -1;
+ }
+ pptstabent->ind = ppt->ind;
+ pptstabent->data = ppt->data;
+ ppt->data = 0;
+ pptstabent->len = ppt->len;
+ if (jpc_ppxstab_insert(tile->pptstab, pptstabent)) {
+ return -1;
+ }
+ return 0;
+}
+
+static int jpc_dec_process_com(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ /* Eliminate compiler warnings about unused variables. */
+ dec = 0;
+ ms = 0;
+
+ return 0;
+}
+
+static int jpc_dec_process_unk(jpc_dec_t *dec, jpc_ms_t *ms)
+{
+ /* Eliminate compiler warnings about unused variables. */
+ dec = 0;
+
+ fprintf(stderr, "warning: ignoring unknown marker segment\n");
+ jpc_ms_dump(ms, stderr);
+ return 0;
+}
+
+/******************************************************************************\
+*
+\******************************************************************************/
+
+static jpc_dec_cp_t *jpc_dec_cp_create(uint_fast16_t numcomps)
+{
+ jpc_dec_cp_t *cp;
+ jpc_dec_ccp_t *ccp;
+ int compno;
+
+ if (!(cp = jas_malloc(sizeof(jpc_dec_cp_t)))) {
+ return 0;
+ }
+ cp->flags = 0;
+ cp->numcomps = numcomps;
+ cp->prgord = 0;
+ cp->numlyrs = 0;
+ cp->mctid = 0;
+ cp->csty = 0;
+ if (!(cp->ccps = jas_malloc(cp->numcomps * sizeof(jpc_dec_ccp_t)))) {
+ return 0;
+ }
+ if (!(cp->pchglist = jpc_pchglist_create())) {
+ jas_free(cp->ccps);
+ return 0;
+ }
+ for (compno = 0, ccp = cp->ccps; compno < cp->numcomps;
+ ++compno, ++ccp) {
+ ccp->flags = 0;
+ ccp->numrlvls = 0;
+ ccp->cblkwidthexpn = 0;
+ ccp->cblkheightexpn = 0;
+ ccp->qmfbid = 0;
+ ccp->numstepsizes = 0;
+ ccp->numguardbits = 0;
+ ccp->roishift = 0;
+ ccp->cblkctx = 0;
+ }
+ return cp;
+}
+
+static jpc_dec_cp_t *jpc_dec_cp_copy(jpc_dec_cp_t *cp)
+{
+ jpc_dec_cp_t *newcp;
+ jpc_dec_ccp_t *newccp;
+ jpc_dec_ccp_t *ccp;
+ int compno;
+
+ if (!(newcp = jpc_dec_cp_create(cp->numcomps))) {
+ return 0;
+ }
+ newcp->flags = cp->flags;
+ newcp->prgord = cp->prgord;
+ newcp->numlyrs = cp->numlyrs;
+ newcp->mctid = cp->mctid;
+ newcp->csty = cp->csty;
+ jpc_pchglist_destroy(newcp->pchglist);
+ newcp->pchglist = 0;
+ if (!(newcp->pchglist = jpc_pchglist_copy(cp->pchglist))) {
+ jas_free(newcp);
+ return 0;
+ }
+ for (compno = 0, newccp = newcp->ccps, ccp = cp->ccps;
+ compno < cp->numcomps;
+ ++compno, ++newccp, ++ccp) {
+ *newccp = *ccp;
+ }
+ return newcp;
+}
+
+static void jpc_dec_cp_resetflags(jpc_dec_cp_t *cp)
+{
+ int compno;
+ jpc_dec_ccp_t *ccp;
+ cp->flags &= (JPC_CSET | JPC_QSET);
+ for (compno = 0, ccp = cp->ccps; compno < cp->numcomps;
+ ++compno, ++ccp) {
+ ccp->flags = 0;
+ }
+}
+
+static void jpc_dec_cp_destroy(jpc_dec_cp_t *cp)
+{
+ if (cp->ccps) {
+ jas_free(cp->ccps);
+ }
+ if (cp->pchglist) {
+ jpc_pchglist_destroy(cp->pchglist);
+ }
+ jas_free(cp);
+}
+
+static int jpc_dec_cp_isvalid(jpc_dec_cp_t *cp)
+{
+ uint_fast16_t compcnt;
+ jpc_dec_ccp_t *ccp;
+
+ if (!(cp->flags & JPC_CSET) || !(cp->flags & JPC_QSET)) {
+ return 0;
+ }
+ for (compcnt = cp->numcomps, ccp = cp->ccps; compcnt > 0; --compcnt,
+ ++ccp) {
+ /* Is there enough step sizes for the number of bands? */
+ if ((ccp->qsty != JPC_QCX_SIQNT && JAS_CAST(int, ccp->numstepsizes) < 3 *
+ ccp->numrlvls - 2) || (ccp->qsty == JPC_QCX_SIQNT &&
+ ccp->numstepsizes != 1)) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static void calcstepsizes(uint_fast16_t refstepsize, int numrlvls,
+ uint_fast16_t *stepsizes)
+{
+ int bandno;
+ int numbands;
+ uint_fast16_t expn;
+ uint_fast16_t mant;
+ expn = JPC_QCX_GETEXPN(refstepsize);
+ mant = JPC_QCX_GETMANT(refstepsize);
+ numbands = 3 * numrlvls - 2;
+ for (bandno = 0; bandno < numbands; ++bandno) {
+ stepsizes[bandno] = JPC_QCX_MANT(mant) | JPC_QCX_EXPN(expn +
+ (numrlvls - 1) - (numrlvls - 1 - ((bandno > 0) ? ((bandno + 2) / 3) : (0))));
+ }
+}
+
+static int jpc_dec_cp_prepare(jpc_dec_cp_t *cp)
+{
+ jpc_dec_ccp_t *ccp;
+ int compno;
+ int i;
+ for (compno = 0, ccp = cp->ccps; compno < cp->numcomps;
+ ++compno, ++ccp) {
+ if (!(ccp->csty & JPC_COX_PRT)) {
+ for (i = 0; i < JPC_MAXRLVLS; ++i) {
+ ccp->prcwidthexpns[i] = 15;
+ ccp->prcheightexpns[i] = 15;
+ }
+ }
+ if (ccp->qsty == JPC_QCX_SIQNT) {
+ calcstepsizes(ccp->stepsizes[0], ccp->numrlvls, ccp->stepsizes);
+ }
+ }
+ return 0;
+}
+
+static int jpc_dec_cp_setfromcod(jpc_dec_cp_t *cp, jpc_cod_t *cod)
+{
+ jpc_dec_ccp_t *ccp;
+ int compno;
+ cp->flags |= JPC_CSET;
+ cp->prgord = cod->prg;
+ if (cod->mctrans) {
+ cp->mctid = (cod->compparms.qmfbid == JPC_COX_INS) ? (JPC_MCT_ICT) : (JPC_MCT_RCT);
+ } else {
+ cp->mctid = JPC_MCT_NONE;
+ }
+ cp->numlyrs = cod->numlyrs;
+ cp->csty = cod->csty & (JPC_COD_SOP | JPC_COD_EPH);
+ for (compno = 0, ccp = cp->ccps; compno < cp->numcomps;
+ ++compno, ++ccp) {
+ jpc_dec_cp_setfromcox(cp, ccp, &cod->compparms, 0);
+ }
+ cp->flags |= JPC_CSET;
+ return 0;
+}
+
+static int jpc_dec_cp_setfromcoc(jpc_dec_cp_t *cp, jpc_coc_t *coc)
+{
+ jpc_dec_cp_setfromcox(cp, &cp->ccps[coc->compno], &coc->compparms, JPC_COC);
+ return 0;
+}
+
+static int jpc_dec_cp_setfromcox(jpc_dec_cp_t *cp, jpc_dec_ccp_t *ccp,
+ jpc_coxcp_t *compparms, int flags)
+{
+ int rlvlno;
+
+ /* Eliminate compiler warnings about unused variables. */
+ cp = 0;
+
+ if ((flags & JPC_COC) || !(ccp->flags & JPC_COC)) {
+ ccp->numrlvls = compparms->numdlvls + 1;
+ ccp->cblkwidthexpn = JPC_COX_GETCBLKSIZEEXPN(
+ compparms->cblkwidthval);
+ ccp->cblkheightexpn = JPC_COX_GETCBLKSIZEEXPN(
+ compparms->cblkheightval);
+ ccp->qmfbid = compparms->qmfbid;
+ ccp->cblkctx = compparms->cblksty;
+ ccp->csty = compparms->csty & JPC_COX_PRT;
+ for (rlvlno = 0; rlvlno < compparms->numrlvls; ++rlvlno) {
+ ccp->prcwidthexpns[rlvlno] =
+ compparms->rlvls[rlvlno].parwidthval;
+ ccp->prcheightexpns[rlvlno] =
+ compparms->rlvls[rlvlno].parheightval;
+ }
+ ccp->flags |= flags | JPC_CSET;
+ }
+ return 0;
+}
+
+static int jpc_dec_cp_setfromqcd(jpc_dec_cp_t *cp, jpc_qcd_t *qcd)
+{
+ int compno;
+ jpc_dec_ccp_t *ccp;
+ for (compno = 0, ccp = cp->ccps; compno < cp->numcomps;
+ ++compno, ++ccp) {
+ jpc_dec_cp_setfromqcx(cp, ccp, &qcd->compparms, 0);
+ }
+ cp->flags |= JPC_QSET;
+ return 0;
+}
+
+static int jpc_dec_cp_setfromqcc(jpc_dec_cp_t *cp, jpc_qcc_t *qcc)
+{
+ return jpc_dec_cp_setfromqcx(cp, &cp->ccps[qcc->compno], &qcc->compparms, JPC_QCC);
+}
+
+static int jpc_dec_cp_setfromqcx(jpc_dec_cp_t *cp, jpc_dec_ccp_t *ccp,
+ jpc_qcxcp_t *compparms, int flags)
+{
+ int bandno;
+
+ /* Eliminate compiler warnings about unused variables. */
+ cp = 0;
+
+ if ((flags & JPC_QCC) || !(ccp->flags & JPC_QCC)) {
+ ccp->flags |= flags | JPC_QSET;
+ for (bandno = 0; bandno < compparms->numstepsizes; ++bandno) {
+ ccp->stepsizes[bandno] = compparms->stepsizes[bandno];
+ }
+ ccp->numstepsizes = compparms->numstepsizes;
+ ccp->numguardbits = compparms->numguard;
+ ccp->qsty = compparms->qntsty;
+ }
+ return 0;
+}
+
+static int jpc_dec_cp_setfromrgn(jpc_dec_cp_t *cp, jpc_rgn_t *rgn)
+{
+ jpc_dec_ccp_t *ccp;
+ ccp = &cp->ccps[rgn->compno];
+ ccp->roishift = rgn->roishift;
+ return 0;
+}
+
+static int jpc_pi_addpchgfrompoc(jpc_pi_t *pi, jpc_poc_t *poc)
+{
+ int pchgno;
+ jpc_pchg_t *pchg;
+ for (pchgno = 0; pchgno < poc->numpchgs; ++pchgno) {
+ if (!(pchg = jpc_pchg_copy(&poc->pchgs[pchgno]))) {
+ return -1;
+ }
+ if (jpc_pchglist_insert(pi->pchglist, -1, pchg)) {
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int jpc_dec_cp_setfrompoc(jpc_dec_cp_t *cp, jpc_poc_t *poc, int reset)
+{
+ int pchgno;
+ jpc_pchg_t *pchg;
+ if (reset) {
+ while (jpc_pchglist_numpchgs(cp->pchglist) > 0) {
+ pchg = jpc_pchglist_remove(cp->pchglist, 0);
+ jpc_pchg_destroy(pchg);
+ }
+ }
+ for (pchgno = 0; pchgno < poc->numpchgs; ++pchgno) {
+ if (!(pchg = jpc_pchg_copy(&poc->pchgs[pchgno]))) {
+ return -1;
+ }
+ if (jpc_pchglist_insert(cp->pchglist, -1, pchg)) {
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static jpc_fix_t jpc_calcabsstepsize(int stepsize, int numbits)
+{
+ jpc_fix_t absstepsize;
+ int n;
+
+ absstepsize = jpc_inttofix(1);
+ n = JPC_FIX_FRACBITS - 11;
+ absstepsize |= (n >= 0) ? (JPC_QCX_GETMANT(stepsize) << n) :
+ (JPC_QCX_GETMANT(stepsize) >> (-n));
+ n = numbits - JPC_QCX_GETEXPN(stepsize);
+ absstepsize = (n >= 0) ? (absstepsize << n) : (absstepsize >> (-n));
+ return absstepsize;
+}
+
+static void jpc_dequantize(jas_matrix_t *x, jpc_fix_t absstepsize)
+{
+ int i;
+ int j;
+ int t;
+
+ assert(absstepsize >= 0);
+ if (absstepsize == jpc_inttofix(1)) {
+ return;
+ }
+
+ for (i = 0; i < jas_matrix_numrows(x); ++i) {
+ for (j = 0; j < jas_matrix_numcols(x); ++j) {
+ t = jas_matrix_get(x, i, j);
+ if (t) {
+ t = jpc_fix_mul(t, absstepsize);
+ } else {
+ t = 0;
+ }
+ jas_matrix_set(x, i, j, t);
+ }
+ }
+
+}
+
+static void jpc_undo_roi(jas_matrix_t *x, int roishift, int bgshift, int numbps)
+{
+ int i;
+ int j;
+ int thresh;
+ jpc_fix_t val;
+ jpc_fix_t mag;
+ bool warn;
+ uint_fast32_t mask;
+
+ if (roishift == 0 && bgshift == 0) {
+ return;
+ }
+ thresh = 1 << roishift;
+
+ warn = false;
+ for (i = 0; i < jas_matrix_numrows(x); ++i) {
+ for (j = 0; j < jas_matrix_numcols(x); ++j) {
+ val = jas_matrix_get(x, i, j);
+ mag = JAS_ABS(val);
+ if (mag >= thresh) {
+ /* We are dealing with ROI data. */
+ mag >>= roishift;
+ val = (val < 0) ? (-mag) : mag;
+ jas_matrix_set(x, i, j, val);
+ } else {
+ /* We are dealing with non-ROI (i.e., background) data. */
+ mag <<= bgshift;
+ mask = (1 << numbps) - 1;
+ /* Perform a basic sanity check on the sample value. */
+ /* Some implementations write garbage in the unused
+ most-significant bit planes introduced by ROI shifting.
+ Here we ensure that any such bits are masked off. */
+ if (mag & (~mask)) {
+ if (!warn) {
+ fprintf(stderr,
+ "warning: possibly corrupt code stream\n");
+ warn = true;
+ }
+ mag &= mask;
+ }
+ val = (val < 0) ? (-mag) : mag;
+ jas_matrix_set(x, i, j, val);
+ }
+ }
+ }
+}
+
+static jpc_dec_t *jpc_dec_create(jpc_dec_importopts_t *impopts, jas_stream_t *in)
+{
+ jpc_dec_t *dec;
+
+ if (!(dec = jas_malloc(sizeof(jpc_dec_t)))) {
+ return 0;
+ }
+
+ dec->image = 0;
+ dec->xstart = 0;
+ dec->ystart = 0;
+ dec->xend = 0;
+ dec->yend = 0;
+ dec->tilewidth = 0;
+ dec->tileheight = 0;
+ dec->tilexoff = 0;
+ dec->tileyoff = 0;
+ dec->numhtiles = 0;
+ dec->numvtiles = 0;
+ dec->numtiles = 0;
+ dec->tiles = 0;
+ dec->curtile = 0;
+ dec->numcomps = 0;
+ dec->in = in;
+ dec->cp = 0;
+ dec->maxlyrs = impopts->maxlyrs;
+ dec->maxpkts = impopts->maxpkts;
+dec->numpkts = 0;
+ dec->ppmseqno = 0;
+ dec->state = 0;
+ dec->cmpts = 0;
+ dec->pkthdrstreams = 0;
+ dec->ppmstab = 0;
+ dec->curtileendoff = 0;
+
+ return dec;
+}
+
+static void jpc_dec_destroy(jpc_dec_t *dec)
+{
+ if (dec->cstate) {
+ jpc_cstate_destroy(dec->cstate);
+ }
+ if (dec->pkthdrstreams) {
+ jpc_streamlist_destroy(dec->pkthdrstreams);
+ }
+ if (dec->image) {
+ jas_image_destroy(dec->image);
+ }
+
+ if (dec->cp) {
+ jpc_dec_cp_destroy(dec->cp);
+ }
+
+ if (dec->cmpts) {
+ jas_free(dec->cmpts);
+ }
+
+ if (dec->tiles) {
+ jas_free(dec->tiles);
+ }
+
+ jas_free(dec);
+}
+
+/******************************************************************************\
+*
+\******************************************************************************/
+
+void jpc_seglist_insert(jpc_dec_seglist_t *list, jpc_dec_seg_t *ins, jpc_dec_seg_t *node)
+{
+ jpc_dec_seg_t *prev;
+ jpc_dec_seg_t *next;
+
+ prev = ins;
+ node->prev = prev;
+ next = prev ? (prev->next) : 0;
+ node->prev = prev;
+ node->next = next;
+ if (prev) {
+ prev->next = node;
+ } else {
+ list->head = node;
+ }
+ if (next) {
+ next->prev = node;
+ } else {
+ list->tail = node;
+ }
+}
+
+void jpc_seglist_remove(jpc_dec_seglist_t *list, jpc_dec_seg_t *seg)
+{
+ jpc_dec_seg_t *prev;
+ jpc_dec_seg_t *next;
+
+ prev = seg->prev;
+ next = seg->next;
+ if (prev) {
+ prev->next = next;
+ } else {
+ list->head = next;
+ }
+ if (next) {
+ next->prev = prev;
+ } else {
+ list->tail = prev;
+ }
+ seg->prev = 0;
+ seg->next = 0;
+}
+
+jpc_dec_seg_t *jpc_seg_alloc()
+{
+ jpc_dec_seg_t *seg;
+
+ if (!(seg = jas_malloc(sizeof(jpc_dec_seg_t)))) {
+ return 0;
+ }
+ seg->prev = 0;
+ seg->next = 0;
+ seg->passno = -1;
+ seg->numpasses = 0;
+ seg->maxpasses = 0;
+ seg->type = JPC_SEG_INVALID;
+ seg->stream = 0;
+ seg->cnt = 0;
+ seg->complete = 0;
+ seg->lyrno = -1;
+ return seg;
+}
+
+void jpc_seg_destroy(jpc_dec_seg_t *seg)
+{
+ if (seg->stream) {
+ jas_stream_close(seg->stream);
+ }
+ jas_free(seg);
+}
+
+static int jpc_dec_dump(jpc_dec_t *dec, FILE *out)
+{
+ jpc_dec_tile_t *tile;
+ int tileno;
+ jpc_dec_tcomp_t *tcomp;
+ int compno;
+ jpc_dec_rlvl_t *rlvl;
+ int rlvlno;
+ jpc_dec_band_t *band;
+ int bandno;
+ jpc_dec_prc_t *prc;
+ int prcno;
+ jpc_dec_cblk_t *cblk;
+ int cblkno;
+
+ for (tileno = 0, tile = dec->tiles; tileno < dec->numtiles;
+ ++tileno, ++tile) {
+ for (compno = 0, tcomp = tile->tcomps; compno < dec->numcomps;
+ ++compno, ++tcomp) {
+ for (rlvlno = 0, rlvl = tcomp->rlvls; rlvlno <
+ tcomp->numrlvls; ++rlvlno, ++rlvl) {
+fprintf(out, "RESOLUTION LEVEL %d\n", rlvlno);
+fprintf(out, "xs =%d, ys = %d, xe = %d, ye = %d, w = %d, h = %d\n",
+ rlvl->xstart, rlvl->ystart, rlvl->xend, rlvl->yend, rlvl->xend -
+ rlvl->xstart, rlvl->yend - rlvl->ystart);
+ for (bandno = 0, band = rlvl->bands;
+ bandno < rlvl->numbands; ++bandno, ++band) {
+fprintf(out, "BAND %d\n", bandno);
+fprintf(out, "xs =%d, ys = %d, xe = %d, ye = %d, w = %d, h = %d\n",
+ jas_seq2d_xstart(band->data), jas_seq2d_ystart(band->data), jas_seq2d_xend(band->data),
+ jas_seq2d_yend(band->data), jas_seq2d_xend(band->data) - jas_seq2d_xstart(band->data),
+ jas_seq2d_yend(band->data) - jas_seq2d_ystart(band->data));
+ for (prcno = 0, prc = band->prcs;
+ prcno < rlvl->numprcs; ++prcno,
+ ++prc) {
+fprintf(out, "CODE BLOCK GROUP %d\n", prcno);
+fprintf(out, "xs =%d, ys = %d, xe = %d, ye = %d, w = %d, h = %d\n",
+ prc->xstart, prc->ystart, prc->xend, prc->yend, prc->xend -
+ prc->xstart, prc->yend - prc->ystart);
+ for (cblkno = 0, cblk =
+ prc->cblks; cblkno <
+ prc->numcblks; ++cblkno,
+ ++cblk) {
+fprintf(out, "CODE BLOCK %d\n", cblkno);
+fprintf(out, "xs =%d, ys = %d, xe = %d, ye = %d, w = %d, h = %d\n",
+ jas_seq2d_xstart(cblk->data), jas_seq2d_ystart(cblk->data), jas_seq2d_xend(cblk->data),
+ jas_seq2d_yend(cblk->data), jas_seq2d_xend(cblk->data) - jas_seq2d_xstart(cblk->data),
+ jas_seq2d_yend(cblk->data) - jas_seq2d_ystart(cblk->data));
+ }
+ }
+ }
+ }
+ }
+ }
+
+ return 0;
+}
+
+jpc_streamlist_t *jpc_streamlist_create()
+{
+ jpc_streamlist_t *streamlist;
+ int i;
+
+ if (!(streamlist = jas_malloc(sizeof(jpc_streamlist_t)))) {
+ return 0;
+ }
+ streamlist->numstreams = 0;
+ streamlist->maxstreams = 100;
+ if (!(streamlist->streams = jas_malloc(streamlist->maxstreams *
+ sizeof(jas_stream_t *)))) {
+ jas_free(streamlist);
+ return 0;
+ }
+ for (i = 0; i < streamlist->maxstreams; ++i) {
+ streamlist->streams[i] = 0;
+ }
+ return streamlist;
+}
+
+int jpc_streamlist_insert(jpc_streamlist_t *streamlist, int streamno,
+ jas_stream_t *stream)
+{
+ jas_stream_t **newstreams;
+ int newmaxstreams;
+ int i;
+ /* Grow the array of streams if necessary. */
+ if (streamlist->numstreams >= streamlist->maxstreams) {
+ newmaxstreams = streamlist->maxstreams + 1024;
+ if (!(newstreams = jas_realloc(streamlist->streams,
+ (newmaxstreams + 1024) * sizeof(jas_stream_t *)))) {
+ return -1;
+ }
+ for (i = streamlist->numstreams; i < streamlist->maxstreams; ++i) {
+ streamlist->streams[i] = 0;
+ }
+ streamlist->maxstreams = newmaxstreams;
+ streamlist->streams = newstreams;
+ }
+ if (streamno != streamlist->numstreams) {
+ /* Can only handle insertion at start of list. */
+ return -1;
+ }
+ streamlist->streams[streamno] = stream;
+ ++streamlist->numstreams;
+ return 0;
+}
+
+jas_stream_t *jpc_streamlist_remove(jpc_streamlist_t *streamlist, int streamno)
+{
+ jas_stream_t *stream;
+ int i;
+ if (streamno >= streamlist->numstreams) {
+ abort();
+ }
+ stream = streamlist->streams[streamno];
+ for (i = streamno + 1; i < streamlist->numstreams; ++i) {
+ streamlist->streams[i - 1] = streamlist->streams[i];
+ }
+ --streamlist->numstreams;
+ return stream;
+}
+
+void jpc_streamlist_destroy(jpc_streamlist_t *streamlist)
+{
+ int streamno;
+ if (streamlist->streams) {
+ for (streamno = 0; streamno < streamlist->numstreams;
+ ++streamno) {
+ jas_stream_close(streamlist->streams[streamno]);
+ }
+ jas_free(streamlist->streams);
+ }
+ jas_free(streamlist);
+}
+
+jas_stream_t *jpc_streamlist_get(jpc_streamlist_t *streamlist, int streamno)
+{
+ assert(streamno < streamlist->numstreams);
+ return streamlist->streams[streamno];
+}
+
+int jpc_streamlist_numstreams(jpc_streamlist_t *streamlist)
+{
+ return streamlist->numstreams;
+}
+
+jpc_ppxstab_t *jpc_ppxstab_create()
+{
+ jpc_ppxstab_t *tab;
+
+ if (!(tab = jas_malloc(sizeof(jpc_ppxstab_t)))) {
+ return 0;
+ }
+ tab->numents = 0;
+ tab->maxents = 0;
+ tab->ents = 0;
+ return tab;
+}
+
+void jpc_ppxstab_destroy(jpc_ppxstab_t *tab)
+{
+ int i;
+ for (i = 0; i < tab->numents; ++i) {
+ jpc_ppxstabent_destroy(tab->ents[i]);
+ }
+ if (tab->ents) {
+ jas_free(tab->ents);
+ }
+ jas_free(tab);
+}
+
+int jpc_ppxstab_grow(jpc_ppxstab_t *tab, int maxents)
+{
+ jpc_ppxstabent_t **newents;
+ if (tab->maxents < maxents) {
+ newents = (tab->ents) ? jas_realloc(tab->ents, maxents *
+ sizeof(jpc_ppxstabent_t *)) : jas_malloc(maxents * sizeof(jpc_ppxstabent_t *));
+ if (!newents) {
+ return -1;
+ }
+ tab->ents = newents;
+ tab->maxents = maxents;
+ }
+ return 0;
+}
+
+int jpc_ppxstab_insert(jpc_ppxstab_t *tab, jpc_ppxstabent_t *ent)
+{
+ int inspt;
+ int i;
+
+ for (i = 0; i < tab->numents; ++i) {
+ if (tab->ents[i]->ind > ent->ind) {
+ break;
+ }
+ }
+ inspt = i;
+
+ if (tab->numents >= tab->maxents) {
+ if (jpc_ppxstab_grow(tab, tab->maxents + 128)) {
+ return -1;
+ }
+ }
+
+ for (i = tab->numents; i > inspt; --i) {
+ tab->ents[i] = tab->ents[i - 1];
+ }
+ tab->ents[i] = ent;
+ ++tab->numents;
+
+ return 0;
+}
+
+jpc_streamlist_t *jpc_ppmstabtostreams(jpc_ppxstab_t *tab)
+{
+ jpc_streamlist_t *streams;
+ uchar *dataptr;
+ uint_fast32_t datacnt;
+ uint_fast32_t tpcnt;
+ jpc_ppxstabent_t *ent;
+ int entno;
+ jas_stream_t *stream;
+ int n;
+
+ if (!(streams = jpc_streamlist_create())) {
+ goto error;
+ }
+
+ if (!tab->numents) {
+ return streams;
+ }
+
+ entno = 0;
+ ent = tab->ents[entno];
+ dataptr = ent->data;
+ datacnt = ent->len;
+ for (;;) {
+
+ /* Get the length of the packet header data for the current
+ tile-part. */
+ if (datacnt < 4) {
+ goto error;
+ }
+ if (!(stream = jas_stream_memopen(0, 0))) {
+ goto error;
+ }
+ if (jpc_streamlist_insert(streams, jpc_streamlist_numstreams(streams),
+ stream)) {
+ goto error;
+ }
+ tpcnt = (dataptr[0] << 24) | (dataptr[1] << 16) | (dataptr[2] << 8)
+ | dataptr[3];
+ datacnt -= 4;
+ dataptr += 4;
+
+ /* Get the packet header data for the current tile-part. */
+ while (tpcnt) {
+ if (!datacnt) {
+ if (++entno >= tab->numents) {
+ goto error;
+ }
+ ent = tab->ents[entno];
+ dataptr = ent->data;
+ datacnt = ent->len;
+ }
+ n = JAS_MIN(tpcnt, datacnt);
+ if (jas_stream_write(stream, dataptr, n) != n) {
+ goto error;
+ }
+ tpcnt -= n;
+ dataptr += n;
+ datacnt -= n;
+ }
+ jas_stream_rewind(stream);
+ if (!datacnt) {
+ if (++entno >= tab->numents) {
+ break;
+ }
+ ent = tab->ents[entno];
+ dataptr = ent->data;
+ datacnt = ent->len;
+ }
+ }
+
+ return streams;
+
+error:
+ jpc_streamlist_destroy(streams);
+ return 0;
+}
+
+int jpc_pptstabwrite(jas_stream_t *out, jpc_ppxstab_t *tab)
+{
+ int i;
+ jpc_ppxstabent_t *ent;
+ for (i = 0; i < tab->numents; ++i) {
+ ent = tab->ents[i];
+ if (jas_stream_write(out, ent->data, ent->len) != JAS_CAST(int, ent->len)) {
+ return -1;
+ }
+ }
+ return 0;
+}
+
+jpc_ppxstabent_t *jpc_ppxstabent_create()
+{
+ jpc_ppxstabent_t *ent;
+ if (!(ent = jas_malloc(sizeof(jpc_ppxstabent_t)))) {
+ return 0;
+ }
+ ent->data = 0;
+ ent->len = 0;
+ ent->ind = 0;
+ return ent;
+}
+
+void jpc_ppxstabent_destroy(jpc_ppxstabent_t *ent)
+{
+ if (ent->data) {
+ jas_free(ent->data);
+ }
+ jas_free(ent);
+}
|