From: Spacy <sp...@us...> - 2006-05-12 21:26:41
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Update of /cvsroot/vba/VisualBoyAdvance/win32/dependencies/libjasper/jp2 In directory sc8-pr-cvs9.sourceforge.net:/tmp/cvs-serv20508/win32/dependencies/libjasper/jp2 Added Files: jp2_cod.c jp2_cod.h jp2_dec.c jp2_dec.h jp2_enc.c Log Message: --- NEW FILE: jp2_cod.c --- /* * 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) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * Copyright (c) 2001-2003 Michael David Adams * * 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__ */ /* * JP2 Library * * $Id: jp2_cod.c,v 1.1 2006/05/12 21:26:38 spacy51 Exp $ */ /******************************************************************************\ * Includes. \******************************************************************************/ #include <assert.h> #include <stdlib.h> #include "jasper/jas_stream.h" #include "jasper/jas_malloc.h" #include "jasper/jas_debug.h" #include "jp2_cod.h" /******************************************************************************\ * Function prototypes. \******************************************************************************/ #define ONES(n) ((1 << (n)) - 1) jp2_boxinfo_t *jp2_boxinfolookup(int type); static int jp2_getuint8(jas_stream_t *in, uint_fast8_t *val); static int jp2_getuint16(jas_stream_t *in, uint_fast16_t *val); static int jp2_getuint32(jas_stream_t *in, uint_fast32_t *val); static int jp2_getuint64(jas_stream_t *in, uint_fast64_t *val); static int jp2_putuint8(jas_stream_t *out, uint_fast8_t val); static int jp2_putuint16(jas_stream_t *out, uint_fast16_t val); static int jp2_putuint32(jas_stream_t *out, uint_fast32_t val); static int jp2_putuint64(jas_stream_t *out, uint_fast64_t val); static int jp2_getint(jas_stream_t *in, int s, int n, int_fast32_t *val); jp2_box_t *jp2_box_get(jas_stream_t *in); void jp2_box_dump(jp2_box_t *box, FILE *out); static int jp2_jp_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_jp_putdata(jp2_box_t *box, jas_stream_t *out); static int jp2_ftyp_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_ftyp_putdata(jp2_box_t *box, jas_stream_t *out); static int jp2_ihdr_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_ihdr_putdata(jp2_box_t *box, jas_stream_t *out); static void jp2_bpcc_destroy(jp2_box_t *box); static int jp2_bpcc_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_bpcc_putdata(jp2_box_t *box, jas_stream_t *out); static int jp2_colr_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_colr_putdata(jp2_box_t *box, jas_stream_t *out); static void jp2_colr_dumpdata(jp2_box_t *box, FILE *out); static void jp2_colr_destroy(jp2_box_t *box); static void jp2_cdef_destroy(jp2_box_t *box); static int jp2_cdef_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_cdef_putdata(jp2_box_t *box, jas_stream_t *out); static void jp2_cdef_dumpdata(jp2_box_t *box, FILE *out); static void jp2_cmap_destroy(jp2_box_t *box); static int jp2_cmap_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_cmap_putdata(jp2_box_t *box, jas_stream_t *out); static void jp2_cmap_dumpdata(jp2_box_t *box, FILE *out); static void jp2_pclr_destroy(jp2_box_t *box); static int jp2_pclr_getdata(jp2_box_t *box, jas_stream_t *in); static int jp2_pclr_putdata(jp2_box_t *box, jas_stream_t *out); static void jp2_pclr_dumpdata(jp2_box_t *box, FILE *out); /******************************************************************************\ * Local data. \******************************************************************************/ jp2_boxinfo_t jp2_boxinfos[] = { {JP2_BOX_JP, "JP", 0, {0, 0, jp2_jp_getdata, jp2_jp_putdata, 0}}, {JP2_BOX_FTYP, "FTYP", 0, {0, 0, jp2_ftyp_getdata, jp2_ftyp_putdata, 0}}, {JP2_BOX_JP2H, "JP2H", JP2_BOX_SUPER, {0, 0, 0, 0, 0}}, {JP2_BOX_IHDR, "IHDR", 0, {0, 0, jp2_ihdr_getdata, jp2_ihdr_putdata, 0}}, {JP2_BOX_BPCC, "BPCC", 0, {0, jp2_bpcc_destroy, jp2_bpcc_getdata, jp2_bpcc_putdata, 0}}, {JP2_BOX_COLR, "COLR", 0, {0, jp2_colr_destroy, jp2_colr_getdata, jp2_colr_putdata, jp2_colr_dumpdata}}, {JP2_BOX_PCLR, "PCLR", 0, {0, jp2_pclr_destroy, jp2_pclr_getdata, jp2_pclr_putdata, jp2_pclr_dumpdata}}, {JP2_BOX_CMAP, "CMAP", 0, {0, jp2_cmap_destroy, jp2_cmap_getdata, jp2_cmap_putdata, jp2_cmap_dumpdata}}, {JP2_BOX_CDEF, "CDEF", 0, {0, jp2_cdef_destroy, jp2_cdef_getdata, jp2_cdef_putdata, jp2_cdef_dumpdata}}, {JP2_BOX_RES, "RES", JP2_BOX_SUPER, {0, 0, 0, 0, 0}}, {JP2_BOX_RESC, "RESC", 0, {0, 0, 0, 0, 0}}, {JP2_BOX_RESD, "RESD", 0, {0, 0, 0, 0, 0}}, {JP2_BOX_JP2C, "JP2C", JP2_BOX_NODATA, {0, 0, 0, 0, 0}}, {JP2_BOX_JP2I, "JP2I", 0, {0, 0, 0, 0, 0}}, {JP2_BOX_XML, "XML", 0, {0, 0, 0, 0, 0}}, {JP2_BOX_UUID, "UUID", 0, {0, 0, 0, 0, 0}}, {JP2_BOX_UINF, "UINF", JP2_BOX_SUPER, {0, 0, 0, 0, 0}}, {JP2_BOX_ULST, "ULST", 0, {0, 0, 0, 0, 0}}, {JP2_BOX_URL, "URL", 0, {0, 0, 0, 0, 0}}, {0, 0, 0, {0, 0, 0, 0, 0}}, }; jp2_boxinfo_t jp2_boxinfo_unk = { 0, "Unknown", 0, {0, 0, 0, 0, 0} }; /******************************************************************************\ * Box constructor. \******************************************************************************/ jp2_box_t *jp2_box_create(int type) { jp2_box_t *box; jp2_boxinfo_t *boxinfo; if (!(box = jas_malloc(sizeof(jp2_box_t)))) { return 0; } memset(box, 0, sizeof(jp2_box_t)); box->type = type; box->len = 0; if (!(boxinfo = jp2_boxinfolookup(type))) { return 0; } box->info = boxinfo; box->ops = &boxinfo->ops; return box; } /******************************************************************************\ * Box destructor. \******************************************************************************/ void jp2_box_destroy(jp2_box_t *box) { if (box->ops->destroy) { (*box->ops->destroy)(box); } jas_free(box); } static void jp2_bpcc_destroy(jp2_box_t *box) { jp2_bpcc_t *bpcc = &box->data.bpcc; if (bpcc->bpcs) { jas_free(bpcc->bpcs); bpcc->bpcs = 0; } } static void jp2_cdef_destroy(jp2_box_t *box) { jp2_cdef_t *cdef = &box->data.cdef; if (cdef->ents) { jas_free(cdef->ents); cdef->ents = 0; } } /******************************************************************************\ * Box input. \******************************************************************************/ jp2_box_t *jp2_box_get(jas_stream_t *in) { jp2_box_t *box; jp2_boxinfo_t *boxinfo; jas_stream_t *tmpstream; uint_fast32_t len; uint_fast64_t extlen; bool dataflag; box = 0; tmpstream = 0; if (!(box = jas_malloc(sizeof(jp2_box_t)))) { goto error; } box->ops = &jp2_boxinfo_unk.ops; if (jp2_getuint32(in, &len) || jp2_getuint32(in, &box->type)) { goto error; } boxinfo = jp2_boxinfolookup(box->type); box->info = boxinfo; box->ops = &boxinfo->ops; box->len = len; if (box->len == 1) { if (jp2_getuint64(in, &extlen)) { goto error; } box->len = extlen; } if (box->len != 0 && box->len < 8) { goto error; } dataflag = !(box->info->flags & (JP2_BOX_SUPER | JP2_BOX_NODATA)); if (dataflag) { if (!(tmpstream = jas_stream_memopen(0, 0))) { goto error; } if (jas_stream_copy(tmpstream, in, box->len - JP2_BOX_HDRLEN)) { goto error; } jas_stream_rewind(tmpstream); if (box->ops->getdata) { if ((*box->ops->getdata)(box, tmpstream)) { goto error; } } jas_stream_close(tmpstream); } #if 0 jp2_box_dump(box, stderr); #endif return box; abort(); error: if (box) { jp2_box_destroy(box); } if (tmpstream) { jas_stream_close(tmpstream); } return 0; } void jp2_box_dump(jp2_box_t *box, FILE *out) { jp2_boxinfo_t *boxinfo; boxinfo = jp2_boxinfolookup(box->type); assert(boxinfo); fprintf(out, "JP2 box: "); fprintf(out, "type=%c%s%c (0x%08x); length=%d\n", '"', boxinfo->name, '"', box->type, box->len); if (box->ops->dumpdata) { (*box->ops->dumpdata)(box, out); } } static int jp2_jp_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_jp_t *jp = &box->data.jp; if (jp2_getuint32(in, &jp->magic)) { return -1; } return 0; } static int jp2_ftyp_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_ftyp_t *ftyp = &box->data.ftyp; unsigned int i; if (jp2_getuint32(in, &ftyp->majver) || jp2_getuint32(in, &ftyp->minver)) { return -1; } ftyp->numcompatcodes = ((box->len - JP2_BOX_HDRLEN) - 8) / 4; if (ftyp->numcompatcodes > JP2_FTYP_MAXCOMPATCODES) { return -1; } for (i = 0; i < ftyp->numcompatcodes; ++i) { if (jp2_getuint32(in, &ftyp->compatcodes[i])) { return -1; } } return 0; } static int jp2_ihdr_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_ihdr_t *ihdr = &box->data.ihdr; if (jp2_getuint32(in, &ihdr->height) || jp2_getuint32(in, &ihdr->width) || jp2_getuint16(in, &ihdr->numcmpts) || jp2_getuint8(in, &ihdr->bpc) || jp2_getuint8(in, &ihdr->comptype) || jp2_getuint8(in, &ihdr->csunk) || jp2_getuint8(in, &ihdr->ipr)) { return -1; } return 0; } static int jp2_bpcc_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_bpcc_t *bpcc = &box->data.bpcc; unsigned int i; bpcc->numcmpts = box->len - JP2_BOX_HDRLEN; if (!(bpcc->bpcs = jas_malloc(bpcc->numcmpts * sizeof(uint_fast8_t)))) { return -1; } for (i = 0; i < bpcc->numcmpts; ++i) { if (jp2_getuint8(in, &bpcc->bpcs[i])) { return -1; } } return 0; } static void jp2_colr_dumpdata(jp2_box_t *box, FILE *out) { jp2_colr_t *colr = &box->data.colr; fprintf(out, "method=%d; pri=%d; approx=%d\n", (int)colr->method, (int)colr->pri, (int)colr->approx); switch (colr->method) { case JP2_COLR_ENUM: fprintf(out, "csid=%d\n", (int)colr->csid); break; case JP2_COLR_ICC: jas_memdump(out, colr->iccp, colr->iccplen); break; } } static int jp2_colr_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_colr_t *colr = &box->data.colr; colr->csid = 0; colr->iccp = 0; colr->iccplen = 0; if (jp2_getuint8(in, &colr->method) || jp2_getuint8(in, &colr->pri) || jp2_getuint8(in, &colr->approx)) { return -1; } switch (colr->method) { case JP2_COLR_ENUM: if (jp2_getuint32(in, &colr->csid)) { return -1; } break; case JP2_COLR_ICC: colr->iccplen = box->len - JP2_BOX_HDRLEN - 3; if (!(colr->iccp = jas_malloc(colr->iccplen * sizeof(uint_fast8_t)))) { return -1; } if (jas_stream_read(in, colr->iccp, colr->iccplen) != colr->iccplen) { return -1; } break; } return 0; } static void jp2_cdef_dumpdata(jp2_box_t *box, FILE *out) { jp2_cdef_t *cdef = &box->data.cdef; unsigned int i; for (i = 0; i < cdef->numchans; ++i) { fprintf(out, "channo=%d; type=%d; assoc=%d\n", cdef->ents[i].channo, cdef->ents[i].type, cdef->ents[i].assoc); } } static void jp2_colr_destroy(jp2_box_t *box) { jp2_colr_t *colr = &box->data.colr; if (colr->iccp) { jas_free(colr->iccp); } } static int jp2_cdef_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_cdef_t *cdef = &box->data.cdef; jp2_cdefchan_t *chan; unsigned int channo; if (jp2_getuint16(in, &cdef->numchans)) { return -1; } if (!(cdef->ents = jas_malloc(cdef->numchans * sizeof(jp2_cdefchan_t)))) { return -1; } for (channo = 0; channo < cdef->numchans; ++channo) { chan = &cdef->ents[channo]; if (jp2_getuint16(in, &chan->channo) || jp2_getuint16(in, &chan->type) || jp2_getuint16(in, &chan->assoc)) { return -1; } } return 0; } /******************************************************************************\ * Box output. \******************************************************************************/ int jp2_box_put(jp2_box_t *box, jas_stream_t *out) { jas_stream_t *tmpstream; bool extlen; bool dataflag; tmpstream = 0; dataflag = !(box->info->flags & (JP2_BOX_SUPER | JP2_BOX_NODATA)); if (dataflag) { tmpstream = jas_stream_memopen(0, 0); if (box->ops->putdata) { if ((*box->ops->putdata)(box, tmpstream)) { goto error; } } box->len = jas_stream_tell(tmpstream) + JP2_BOX_HDRLEN; jas_stream_rewind(tmpstream); } extlen = (box->len >= (((uint_fast64_t)1) << 32)) != 0; if (jp2_putuint32(out, extlen ? 1 : box->len)) { goto error; } if (jp2_putuint32(out, box->type)) { goto error; } if (extlen) { if (jp2_putuint64(out, box->len)) { goto error; } } if (dataflag) { if (jas_stream_copy(out, tmpstream, box->len - JP2_BOX_HDRLEN)) { goto error; } jas_stream_close(tmpstream); } return 0; abort(); error: if (tmpstream) { jas_stream_close(tmpstream); } return -1; } static int jp2_jp_putdata(jp2_box_t *box, jas_stream_t *out) { jp2_jp_t *jp = &box->data.jp; if (jp2_putuint32(out, jp->magic)) { return -1; } return 0; } static int jp2_ftyp_putdata(jp2_box_t *box, jas_stream_t *out) { jp2_ftyp_t *ftyp = &box->data.ftyp; unsigned int i; if (jp2_putuint32(out, ftyp->majver) || jp2_putuint32(out, ftyp->minver)) { return -1; } for (i = 0; i < ftyp->numcompatcodes; ++i) { if (jp2_putuint32(out, ftyp->compatcodes[i])) { return -1; } } return 0; } static int jp2_ihdr_putdata(jp2_box_t *box, jas_stream_t *out) { jp2_ihdr_t *ihdr = &box->data.ihdr; if (jp2_putuint32(out, ihdr->height) || jp2_putuint32(out, ihdr->width) || jp2_putuint16(out, ihdr->numcmpts) || jp2_putuint8(out, ihdr->bpc) || jp2_putuint8(out, ihdr->comptype) || jp2_putuint8(out, ihdr->csunk) || jp2_putuint8(out, ihdr->ipr)) { return -1; } return 0; } static int jp2_bpcc_putdata(jp2_box_t *box, jas_stream_t *out) { jp2_bpcc_t *bpcc = &box->data.bpcc; unsigned int i; for (i = 0; i < bpcc->numcmpts; ++i) { if (jp2_putuint8(out, bpcc->bpcs[i])) { return -1; } } return 0; } static int jp2_colr_putdata(jp2_box_t *box, jas_stream_t *out) { jp2_colr_t *colr = &box->data.colr; if (jp2_putuint8(out, colr->method) || jp2_putuint8(out, colr->pri) || jp2_putuint8(out, colr->approx)) { return -1; } switch (colr->method) { case JP2_COLR_ENUM: if (jp2_putuint32(out, colr->csid)) { return -1; } break; case JP2_COLR_ICC: if (jas_stream_write(out, colr->iccp, JAS_CAST(int, colr->iccplen)) != JAS_CAST(int, colr->iccplen)) return -1; break; } return 0; } static int jp2_cdef_putdata(jp2_box_t *box, jas_stream_t *out) { jp2_cdef_t *cdef = &box->data.cdef; unsigned int i; jp2_cdefchan_t *ent; if (jp2_putuint16(out, cdef->numchans)) { return -1; } for (i = 0; i < cdef->numchans; ++i) { ent = &cdef->ents[i]; if (jp2_putuint16(out, ent->channo) || jp2_putuint16(out, ent->type) || jp2_putuint16(out, ent->assoc)) { return -1; } } return 0; } /******************************************************************************\ * Input operations for primitive types. \******************************************************************************/ static int jp2_getuint8(jas_stream_t *in, uint_fast8_t *val) { int c; if ((c = jas_stream_getc(in)) == EOF) { return -1; } if (val) { *val = c; } return 0; } static int jp2_getuint16(jas_stream_t *in, uint_fast16_t *val) { uint_fast16_t v; int c; if ((c = jas_stream_getc(in)) == EOF) { return -1; } v = c; if ((c = jas_stream_getc(in)) == EOF) { return -1; } v = (v << 8) | c; if (val) { *val = v; } return 0; } static int jp2_getuint32(jas_stream_t *in, uint_fast32_t *val) { uint_fast32_t v; int c; if ((c = jas_stream_getc(in)) == EOF) { return -1; } v = c; if ((c = jas_stream_getc(in)) == EOF) { return -1; } v = (v << 8) | c; if ((c = jas_stream_getc(in)) == EOF) { return -1; } v = (v << 8) | c; if ((c = jas_stream_getc(in)) == EOF) { return -1; } v = (v << 8) | c; if (val) { *val = v; } return 0; } static int jp2_getuint64(jas_stream_t *in, uint_fast64_t *val) { in = 0; val = 0; abort(); } /******************************************************************************\ * Output operations for primitive types. \******************************************************************************/ static int jp2_putuint8(jas_stream_t *out, uint_fast8_t val) { if (jas_stream_putc(out, val & 0xff) == EOF) { return -1; } return 0; } static int jp2_putuint16(jas_stream_t *out, uint_fast16_t val) { if (jas_stream_putc(out, (val >> 8) & 0xff) == EOF || jas_stream_putc(out, val & 0xff) == EOF) { return -1; } return 0; } static int jp2_putuint32(jas_stream_t *out, uint_fast32_t val) { if (jas_stream_putc(out, (val >> 24) & 0xff) == EOF || jas_stream_putc(out, (val >> 16) & 0xff) == EOF || jas_stream_putc(out, (val >> 8) & 0xff) == EOF || jas_stream_putc(out, val & 0xff) == EOF) { return -1; } return 0; } static int jp2_putuint64(jas_stream_t *out, uint_fast64_t val) { if (jp2_putuint32(out, (val >> 32) & 0xffffffffUL) || jp2_putuint32(out, val & 0xffffffffUL)) { return -1; } return 0; } /******************************************************************************\ * Miscellaneous code. \******************************************************************************/ jp2_boxinfo_t *jp2_boxinfolookup(int type) { jp2_boxinfo_t *boxinfo; for (boxinfo = jp2_boxinfos; boxinfo->name; ++boxinfo) { if (boxinfo->type == type) { return boxinfo; } } return &jp2_boxinfo_unk; } static void jp2_cmap_destroy(jp2_box_t *box) { jp2_cmap_t *cmap = &box->data.cmap; if (cmap->ents) { jas_free(cmap->ents); } } static int jp2_cmap_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_cmap_t *cmap = &box->data.cmap; jp2_cmapent_t *ent; unsigned int i; cmap->numchans = (box->len - JP2_BOX_HDRLEN) / 4; if (!(cmap->ents = jas_malloc(cmap->numchans * sizeof(jp2_cmapent_t)))) { return -1; } for (i = 0; i < cmap->numchans; ++i) { ent = &cmap->ents[i]; if (jp2_getuint16(in, &ent->cmptno) || jp2_getuint8(in, &ent->map) || jp2_getuint8(in, &ent->pcol)) { return -1; } } return 0; } static int jp2_cmap_putdata(jp2_box_t *box, jas_stream_t *out) { /* Eliminate compiler warning about unused variables. */ box = 0; out = 0; return -1; } static void jp2_cmap_dumpdata(jp2_box_t *box, FILE *out) { jp2_cmap_t *cmap = &box->data.cmap; unsigned int i; jp2_cmapent_t *ent; fprintf(out, "numchans = %d\n", (int) cmap->numchans); for (i = 0; i < cmap->numchans; ++i) { ent = &cmap->ents[i]; fprintf(out, "cmptno=%d; map=%d; pcol=%d\n", (int) ent->cmptno, (int) ent->map, (int) ent->pcol); } } static void jp2_pclr_destroy(jp2_box_t *box) { jp2_pclr_t *pclr = &box->data.pclr; if (pclr->lutdata) { jas_free(pclr->lutdata); } if (pclr->bpc) jas_free(pclr->bpc); } static int jp2_pclr_getdata(jp2_box_t *box, jas_stream_t *in) { jp2_pclr_t *pclr = &box->data.pclr; int lutsize; unsigned int i; unsigned int j; int_fast32_t x; pclr->lutdata = 0; if (jp2_getuint16(in, &pclr->numlutents) || jp2_getuint8(in, &pclr->numchans)) { return -1; } lutsize = pclr->numlutents * pclr->numchans; if (!(pclr->lutdata = jas_malloc(lutsize * sizeof(int_fast32_t)))) { return -1; } if (!(pclr->bpc = jas_malloc(pclr->numchans * sizeof(uint_fast8_t)))) { return -1; } for (i = 0; i < pclr->numchans; ++i) { if (jp2_getuint8(in, &pclr->bpc[i])) { return -1; } } for (i = 0; i < pclr->numlutents; ++i) { for (j = 0; j < pclr->numchans; ++j) { if (jp2_getint(in, (pclr->bpc[j] & 0x80) != 0, (pclr->bpc[j] & 0x7f) + 1, &x)) { return -1; } pclr->lutdata[i * pclr->numchans + j] = x; } } return 0; } static int jp2_pclr_putdata(jp2_box_t *box, jas_stream_t *out) { #if 0 jp2_pclr_t *pclr = &box->data.pclr; #endif /* Eliminate warning about unused variable. */ box = 0; out = 0; return -1; } static void jp2_pclr_dumpdata(jp2_box_t *box, FILE *out) { jp2_pclr_t *pclr = &box->data.pclr; unsigned int i; int j; fprintf(out, "numents=%d; numchans=%d\n", (int) pclr->numlutents, (int) pclr->numchans); for (i = 0; i < pclr->numlutents; ++i) { for (j = 0; j < pclr->numchans; ++j) { fprintf(out, "LUT[%d][%d]=%d\n", i, j, pclr->lutdata[i * pclr->numchans + j]); } } } static int jp2_getint(jas_stream_t *in, int s, int n, int_fast32_t *val) { int c; int i; uint_fast32_t v; int m; m = (n + 7) / 8; v = 0; for (i = 0; i < m; ++i) { if ((c = jas_stream_getc(in)) == EOF) { return -1; } v = (v << 8) | c; } v &= ONES(n); if (s) { int sb; sb = v & (1 << (8 * m - 1)); *val = ((~v) + 1) & ONES(8 * m); if (sb) { *val = -*val; } } else { *val = v; } return 0; } jp2_cdefchan_t *jp2_cdef_lookup(jp2_cdef_t *cdef, int channo) { unsigned int i; jp2_cdefchan_t *cdefent; for (i = 0; i < cdef->numchans; ++i) { cdefent = &cdef->ents[i]; if (cdefent->channo == JAS_CAST(unsigned int, channo)) { return cdefent; } } return 0; } --- NEW FILE: jp2_cod.h --- /* * 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) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * Copyright (c) 2001-2003 Michael David Adams * * 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__ */ /* * JP2 Library * * $Id: jp2_cod.h,v 1.1 2006/05/12 21:26:38 spacy51 Exp $ */ #ifndef JP2_COD_H #define JP2_COD_H /******************************************************************************\ * Includes. \******************************************************************************/ #include "jasper/jas_types.h" /******************************************************************************\ * Macros. \******************************************************************************/ #define JP2_SPTOBPC(s, p) \ ((((p) - 1) & 0x7f) | (((s) & 1) << 7)) /******************************************************************************\ * Box class. \******************************************************************************/ #define JP2_BOX_HDRLEN 8 /* Box types. */ #define JP2_BOX_JP 0x6a502020 /* Signature */ #define JP2_BOX_FTYP 0x66747970 /* File Type */ #define JP2_BOX_JP2H 0x6a703268 /* JP2 Header */ #define JP2_BOX_IHDR 0x69686472 /* Image Header */ #define JP2_BOX_BPCC 0x62706363 /* Bits Per Component */ #define JP2_BOX_COLR 0x636f6c72 /* Color Specification */ #define JP2_BOX_PCLR 0x70636c72 /* Palette */ #define JP2_BOX_CMAP 0x636d6170 /* Component Mapping */ #define JP2_BOX_CDEF 0x63646566 /* Channel Definition */ #define JP2_BOX_RES 0x72657320 /* Resolution */ #define JP2_BOX_RESC 0x72657363 /* Capture Resolution */ #define JP2_BOX_RESD 0x72657364 /* Default Display Resolution */ #define JP2_BOX_JP2C 0x6a703263 /* Contiguous Code Stream */ #define JP2_BOX_JP2I 0x6a703269 /* Intellectual Property */ #define JP2_BOX_XML 0x786d6c20 /* XML */ #define JP2_BOX_UUID 0x75756964 /* UUID */ #define JP2_BOX_UINF 0x75696e66 /* UUID Info */ #define JP2_BOX_ULST 0x75637374 /* UUID List */ #define JP2_BOX_URL 0x75726c20 /* URL */ #define JP2_BOX_SUPER 0x01 #define JP2_BOX_NODATA 0x02 /* JP box data. */ #define JP2_JP_MAGIC 0x0d0a870a #define JP2_JP_LEN 12 typedef struct { uint_fast32_t magic; } jp2_jp_t; /* FTYP box data. */ #define JP2_FTYP_MAXCOMPATCODES 32 #define JP2_FTYP_MAJVER 0x6a703220 #define JP2_FTYP_MINVER 0 #define JP2_FTYP_COMPATCODE JP2_FTYP_MAJVER typedef struct { uint_fast32_t majver; uint_fast32_t minver; uint_fast32_t numcompatcodes; uint_fast32_t compatcodes[JP2_FTYP_MAXCOMPATCODES]; } jp2_ftyp_t; /* IHDR box data. */ #define JP2_IHDR_COMPTYPE 7 #define JP2_IHDR_BPCNULL 255 typedef struct { uint_fast32_t width; uint_fast32_t height; uint_fast16_t numcmpts; uint_fast8_t bpc; uint_fast8_t comptype; uint_fast8_t csunk; uint_fast8_t ipr; } jp2_ihdr_t; /* BPCC box data. */ typedef struct { uint_fast16_t numcmpts; uint_fast8_t *bpcs; } jp2_bpcc_t; /* COLR box data. */ #define JP2_COLR_ENUM 1 #define JP2_COLR_ICC 2 #define JP2_COLR_PRI 0 #define JP2_COLR_SRGB 16 #define JP2_COLR_SGRAY 17 #define JP2_COLR_SYCC 18 typedef struct { uint_fast8_t method; uint_fast8_t pri; uint_fast8_t approx; uint_fast32_t csid; uint_fast8_t *iccp; int iccplen; /* XXX - Someday we ought to add ICC profile data here. */ } jp2_colr_t; /* PCLR box data. */ typedef struct { uint_fast16_t numlutents; uint_fast8_t numchans; int_fast32_t *lutdata; uint_fast8_t *bpc; } jp2_pclr_t; /* CDEF box per-channel data. */ #define JP2_CDEF_RGB_R 1 #define JP2_CDEF_RGB_G 2 #define JP2_CDEF_RGB_B 3 #define JP2_CDEF_YCBCR_Y 1 #define JP2_CDEF_YCBCR_CB 2 #define JP2_CDEF_YCBCR_CR 3 #define JP2_CDEF_GRAY_Y 1 #define JP2_CDEF_TYPE_COLOR 0 #define JP2_CDEF_TYPE_OPACITY 1 #define JP2_CDEF_TYPE_UNSPEC 65535 #define JP2_CDEF_ASOC_ALL 0 #define JP2_CDEF_ASOC_NONE 65535 typedef struct { uint_fast16_t channo; uint_fast16_t type; uint_fast16_t assoc; } jp2_cdefchan_t; /* CDEF box data. */ typedef struct { uint_fast16_t numchans; jp2_cdefchan_t *ents; } jp2_cdef_t; typedef struct { uint_fast16_t cmptno; uint_fast8_t map; uint_fast8_t pcol; } jp2_cmapent_t; typedef struct { uint_fast16_t numchans; jp2_cmapent_t *ents; } jp2_cmap_t; #define JP2_CMAP_DIRECT 0 #define JP2_CMAP_PALETTE 1 /* Generic box. */ struct jp2_boxops_s; typedef struct { struct jp2_boxops_s *ops; struct jp2_boxinfo_s *info; uint_fast32_t type; uint_fast32_t len; union { jp2_jp_t jp; jp2_ftyp_t ftyp; jp2_ihdr_t ihdr; jp2_bpcc_t bpcc; jp2_colr_t colr; jp2_pclr_t pclr; jp2_cdef_t cdef; jp2_cmap_t cmap; } data; } jp2_box_t; typedef struct jp2_boxops_s { void (*init)(jp2_box_t *box); void (*destroy)(jp2_box_t *box); int (*getdata)(jp2_box_t *box, jas_stream_t *in); int (*putdata)(jp2_box_t *box, jas_stream_t *out); void (*dumpdata)(jp2_box_t *box, FILE *out); } jp2_boxops_t; /******************************************************************************\ * \******************************************************************************/ typedef struct jp2_boxinfo_s { int type; char *name; int flags; jp2_boxops_t ops; } jp2_boxinfo_t; /******************************************************************************\ * Box class. \******************************************************************************/ jp2_box_t *jp2_box_create(int type); void jp2_box_destroy(jp2_box_t *box); jp2_box_t *jp2_box_get(jas_stream_t *in); int jp2_box_put(jp2_box_t *box, jas_stream_t *out); #define JP2_DTYPETOBPC(dtype) \ ((JAS_IMAGE_CDT_GETSGND(dtype) << 7) | (JAS_IMAGE_CDT_GETPREC(dtype) - 1)) #define JP2_BPCTODTYPE(bpc) \ (JAS_IMAGE_CDT_SETSGND(bpc >> 7) | JAS_IMAGE_CDT_SETPREC((bpc & 0x7f) + 1)) #define ICC_CS_RGB 0x52474220 #define ICC_CS_YCBCR 0x59436272 #define ICC_CS_GRAY 0x47524159 jp2_cdefchan_t *jp2_cdef_lookup(jp2_cdef_t *cdef, int channo); #endif --- NEW FILE: jp2_enc.c --- /* * 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) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * Copyright (c) 2001-2003 Michael David Adams * * 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__ */ /* * JP2 Library * * $Id: jp2_enc.c,v 1.1 2006/05/12 21:26:38 spacy51 Exp $ */ /******************************************************************************\ * Includes. \******************************************************************************/ #include <assert.h> #include "jasper/jas_malloc.h" #include "jasper/jas_image.h" #include "jasper/jas_stream.h" #include "jasper/jas_cm.h" #include "jasper/jas_icc.h" #include "jp2_cod.h" static uint_fast32_t jp2_gettypeasoc(int colorspace, int ctype); static int clrspctojp2(jas_clrspc_t clrspc); /******************************************************************************\ * Functions. \******************************************************************************/ int jp2_encode(jas_image_t *image, jas_stream_t *out, char *optstr) { jp2_box_t *box; jp2_ftyp_t *ftyp; jp2_ihdr_t *ihdr; jas_stream_t *tmpstream; int allcmptssame; jp2_bpcc_t *bpcc; long len; uint_fast16_t cmptno; jp2_colr_t *colr; char buf[4096]; uint_fast32_t overhead; jp2_cdefchan_t *cdefchanent; jp2_cdef_t *cdef; int i; uint_fast32_t typeasoc; jas_iccprof_t *iccprof; jas_stream_t *iccstream; int pos; int needcdef; int prec; int sgnd; box = 0; tmpstream = 0; allcmptssame = 1; sgnd = jas_image_cmptsgnd(image, 0); prec = jas_image_cmptprec(image, 0); for (i = 1; i < jas_image_numcmpts(image); ++i) { if (jas_image_cmptsgnd(image, i) != sgnd || jas_image_cmptprec(image, i) != prec) { allcmptssame = 0; break; } } /* Output the signature box. */ if (!(box = jp2_box_create(JP2_BOX_JP))) { goto error; } box->data.jp.magic = JP2_JP_MAGIC; if (jp2_box_put(box, out)) { goto error; } jp2_box_destroy(box); box = 0; /* Output the file type box. */ if (!(box = jp2_box_create(JP2_BOX_FTYP))) { goto error; } ftyp = &box->data.ftyp; ftyp->majver = JP2_FTYP_MAJVER; ftyp->minver = JP2_FTYP_MINVER; ftyp->numcompatcodes = 1; ftyp->compatcodes[0] = JP2_FTYP_COMPATCODE; if (jp2_box_put(box, out)) { goto error; } jp2_box_destroy(box); box = 0; /* * Generate the data portion of the JP2 header box. * We cannot simply output the header for this box * since we do not yet know the correct value for the length * field. */ if (!(tmpstream = jas_stream_memopen(0, 0))) { goto error; } /* Generate image header box. */ if (!(box = jp2_box_create(JP2_BOX_IHDR))) { goto error; } ihdr = &box->data.ihdr; ihdr->width = jas_image_width(image); ihdr->height = jas_image_height(image); ihdr->numcmpts = jas_image_numcmpts(image); ihdr->bpc = allcmptssame ? JP2_SPTOBPC(jas_image_cmptsgnd(image, 0), jas_image_cmptprec(image, 0)) : JP2_IHDR_BPCNULL; ihdr->comptype = JP2_IHDR_COMPTYPE; ihdr->csunk = 0; ihdr->ipr = 0; if (jp2_box_put(box, tmpstream)) { goto error; } jp2_box_destroy(box); box = 0; /* Generate bits per component box. */ if (!allcmptssame) { if (!(box = jp2_box_create(JP2_BOX_BPCC))) { goto error; } bpcc = &box->data.bpcc; bpcc->numcmpts = jas_image_numcmpts(image); if (!(bpcc->bpcs = jas_malloc(bpcc->numcmpts * sizeof(uint_fast8_t)))) { goto error; } for (cmptno = 0; cmptno < bpcc->numcmpts; ++cmptno) { bpcc->bpcs[cmptno] = JP2_SPTOBPC(jas_image_cmptsgnd(image, cmptno), jas_image_cmptprec(image, cmptno)); } if (jp2_box_put(box, tmpstream)) { goto error; } jp2_box_destroy(box); box = 0; } /* Generate color specification box. */ if (!(box = jp2_box_create(JP2_BOX_COLR))) { goto error; } colr = &box->data.colr; switch (jas_image_clrspc(image)) { case JAS_CLRSPC_SRGB: case JAS_CLRSPC_SYCBCR: case JAS_CLRSPC_SGRAY: colr->method = JP2_COLR_ENUM; colr->csid = clrspctojp2(jas_image_clrspc(image)); colr->pri = JP2_COLR_PRI; colr->approx = 0; break; default: colr->method = JP2_COLR_ICC; colr->pri = JP2_COLR_PRI; colr->approx = 0; iccprof = jas_iccprof_createfromcmprof(jas_image_cmprof(image)); assert(iccprof); iccstream = jas_stream_memopen(0, 0); assert(iccstream); if (jas_iccprof_save(iccprof, iccstream)) abort(); if ((pos = jas_stream_tell(iccstream)) < 0) abort(); colr->iccplen = pos; colr->iccp = jas_malloc(pos); assert(colr->iccp); jas_stream_rewind(iccstream); if (jas_stream_read(iccstream, colr->iccp, colr->iccplen) != colr->iccplen) abort(); jas_stream_close(iccstream); jas_iccprof_destroy(iccprof); break; } if (jp2_box_put(box, tmpstream)) { goto error; } jp2_box_destroy(box); box = 0; needcdef = 1; switch (jas_clrspc_fam(jas_image_clrspc(image))) { case JAS_CLRSPC_FAM_RGB: if (jas_image_cmpttype(image, 0) == JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R) && jas_image_cmpttype(image, 1) == JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G) && jas_image_cmpttype(image, 2) == JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B)) needcdef = 0; break; case JAS_CLRSPC_FAM_YCBCR: if (jas_image_cmpttype(image, 0) == JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_YCBCR_Y) && jas_image_cmpttype(image, 1) == JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_YCBCR_CB) && jas_image_cmpttype(image, 2) == JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_YCBCR_CR)) needcdef = 0; break; case JAS_CLRSPC_FAM_GRAY: if (jas_image_cmpttype(image, 0) == JAS_IMAGE_CT_COLOR(JAS_IMAGE_CT_GRAY_Y)) needcdef = 0; break; default: abort(); break; } if (needcdef) { if (!(box = jp2_box_create(JP2_BOX_CDEF))) { goto error; } cdef = &box->data.cdef; cdef->numchans = jas_image_numcmpts(image); cdef->ents = jas_malloc(cdef->numchans * sizeof(jp2_cdefchan_t)); for (i = 0; i < jas_image_numcmpts(image); ++i) { cdefchanent = &cdef->ents[i]; cdefchanent->channo = i; typeasoc = jp2_gettypeasoc(jas_image_clrspc(image), jas_image_cmpttype(image, i)); cdefchanent->type = typeasoc >> 16; cdefchanent->assoc = typeasoc & 0x7fff; } if (jp2_box_put(box, tmpstream)) { goto error; } jp2_box_destroy(box); box = 0; } /* Determine the total length of the JP2 header box. */ len = jas_stream_tell(tmpstream); jas_stream_rewind(tmpstream); /* * Output the JP2 header box and all of the boxes which it contains. */ if (!(box = jp2_box_create(JP2_BOX_JP2H))) { goto error; } box->len = len + JP2_BOX_HDRLEN; if (jp2_box_put(box, out)) { goto error; } jp2_box_destroy(box); box = 0; if (jas_stream_copy(out, tmpstream, len)) { goto error; } jas_stream_close(tmpstream); tmpstream = 0; /* * Output the contiguous code stream box. */ if (!(box = jp2_box_create(JP2_BOX_JP2C))) { goto error; } box->len = 0; if (jp2_box_put(box, out)) { goto error; } jp2_box_destroy(box); box = 0; /* Output the JPEG-2000 code stream. */ overhead = jas_stream_getrwcount(out); sprintf(buf, "%s\n_jp2overhead=%lu\n", (optstr ? optstr : ""), (unsigned long) overhead); if (jpc_encode(image, out, buf)) { goto error; } return 0; abort(); error: if (box) { jp2_box_destroy(box); } if (tmpstream) { jas_stream_close(tmpstream); } return -1; } static uint_fast32_t jp2_gettypeasoc(int colorspace, int ctype) { int type; int asoc; if (ctype & JAS_IMAGE_CT_OPACITY) { type = JP2_CDEF_TYPE_OPACITY; asoc = JP2_CDEF_ASOC_ALL; goto done; } type = JP2_CDEF_TYPE_UNSPEC; asoc = JP2_CDEF_ASOC_NONE; switch (jas_clrspc_fam(colorspace)) { case JAS_CLRSPC_FAM_RGB: switch (JAS_IMAGE_CT_COLOR(ctype)) { case JAS_IMAGE_CT_RGB_R: type = JP2_CDEF_TYPE_COLOR; asoc = JP2_CDEF_RGB_R; break; case JAS_IMAGE_CT_RGB_G: type = JP2_CDEF_TYPE_COLOR; asoc = JP2_CDEF_RGB_G; break; case JAS_IMAGE_CT_RGB_B: type = JP2_CDEF_TYPE_COLOR; asoc = JP2_CDEF_RGB_B; break; } break; case JAS_CLRSPC_FAM_YCBCR: switch (JAS_IMAGE_CT_COLOR(ctype)) { case JAS_IMAGE_CT_YCBCR_Y: type = JP2_CDEF_TYPE_COLOR; asoc = JP2_CDEF_YCBCR_Y; break; case JAS_IMAGE_CT_YCBCR_CB: type = JP2_CDEF_TYPE_COLOR; asoc = JP2_CDEF_YCBCR_CB; break; case JAS_IMAGE_CT_YCBCR_CR: type = JP2_CDEF_TYPE_COLOR; asoc = JP2_CDEF_YCBCR_CR; break; } break; case JAS_CLRSPC_FAM_GRAY: type = JP2_CDEF_TYPE_COLOR; asoc = JP2_CDEF_GRAY_Y; break; } done: return (type << 16) | asoc; } static int clrspctojp2(jas_clrspc_t clrspc) { switch (clrspc) { case JAS_CLRSPC_SRGB: return JP2_COLR_SRGB; case JAS_CLRSPC_SYCBCR: return JP2_COLR_SYCC; case JAS_CLRSPC_SGRAY: return JP2_COLR_SGRAY; default: abort(); break; } } --- NEW FILE: jp2_dec.h --- /* * 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) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * Copyright (c) 2001-2003 Michael David Adams * * 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__ */ #ifndef JP2_DEC_H #define JP2_DEC_H #include "jasper/jas_image.h" #include "jasper/jas_stream.h" #include "jp2_cod.h" typedef struct { jp2_box_t *pclr; jp2_box_t *cdef; jp2_box_t *ihdr; jp2_box_t *bpcc; jp2_box_t *cmap; jp2_box_t *colr; jas_image_t *image; uint_fast16_t numchans; uint_fast16_t *chantocmptlut; } jp2_dec_t; #endif --- NEW FILE: jp2_dec.c --- /* * 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) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * Copyright (c) 2001-2003 Michael David Adams * * 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__ */ /* * JP2 Library * * $Id: jp2_dec.c,v 1.1 2006/05/12 21:26:38 spacy51 Exp $ */ /******************************************************************************\ * Includes. \******************************************************************************/ #include "jasper/jas_image.h" #include "jasper/jas_stream.h" #include "jasper/jas_math.h" #include "jasper/jas_debug.h" #include "jasper/jas_malloc.h" #include "jasper/jas_version.h" #include "jp2_cod.h" #include "jp2_dec.h" #define JP2_VALIDATELEN (JAS_MIN(JP2_JP_LEN + 16, JAS_STREAM_MAXPUTBACK)) static jp2_dec_t *jp2_dec_create(void); static void jp2_dec_destroy(jp2_dec_t *dec); static int jp2_getcs(jp2_colr_t *colr); static int fromiccpcs(int cs); static int jp2_getct(int colorspace, int type, int assoc); /******************************************************************************\ * Functions. \******************************************************************************/ jas_image_t *jp2_decode(jas_stream_t *in, char *optstr) { jp2_box_t *box; int found; jas_image_t *image; jp2_dec_t *dec; bool samedtype; int dtype; unsigned int i; jp2_cmap_t *cmapd; jp2_pclr_t *pclrd; jp2_cdef_t *cdefd; unsigned int channo; int newcmptno; int_fast32_t *lutents; #if 0 jp2_cdefchan_t *cdefent; int cmptno; #endif jp2_cmapent_t *cmapent; jas_icchdr_t icchdr; jas_iccprof_t *iccprof; dec = 0; box = 0; image = 0; if (!(dec = jp2_dec_create())) { goto error; } /* Get the first box. This should be a JP box. */ if (!(box = jp2_box_get(in))) { jas_eprintf("error: cannot get box\n"); goto error; } if (box->type != JP2_BOX_JP) { jas_eprintf("error: expecting signature box\n"); goto error; } if (box->data.jp.magic != JP2_JP_MAGIC) { jas_eprintf("incorrect magic number\n"); goto error; } jp2_box_destroy(box); box = 0; /* Get the second box. This should be a FTYP box. */ if (!(box = jp2_box_get(in))) { goto error; } if (box->type != JP2_BOX_FTYP) { jas_eprintf("expecting file type box\n"); goto error; } jp2_box_destroy(box); box = 0; /* Get more boxes... */ found = 0; while ((box = jp2_box_get(in))) { if (jas_getdbglevel() >= 1) { fprintf(stderr, "box type %s\n", box->info->name); } switch (box->type) { case JP2_BOX_JP2C: found = 1; break; case JP2_BOX_IHDR: if (!dec->ihdr) { dec->ihdr = box; box = 0; } break; case JP2_BOX_BPCC: if (!dec->bpcc) { dec->bpcc = box; box = 0; } break; case JP2_BOX_CDEF: if (!dec->cdef) { dec->cdef = box; box = 0; } break; case JP2_BOX_PCLR: if (!dec->pclr) { dec->pclr = box; box = 0; } break; case JP2_BOX_CMAP: if (!dec->cmap) { dec->cmap = box; box = 0; } break; case JP2_BOX_COLR: if (!dec->colr) { dec->colr = box; box = 0; } break; } if (box) { jp2_box_destroy(box); box = 0; } if (found) { break; } } if (!found) { jas_eprintf("error: no code stream found\n"); goto error; } if (!(dec->image = jpc_decode(in, optstr))) { jas_eprintf("error: cannot decode code stream\n"); goto error; } /* An IHDR box must be present. */ if (!dec->ihdr) { jas_eprintf("error: missing IHDR box\n"); goto error; } /* Does the number of components indicated in the IHDR box match the value specified in the code stream? */ if (dec->ihdr->data.ihdr.numcmpts != JAS_CAST(uint, jas_image_numcmpts(dec->image))) { jas_eprintf("warning: number of components mismatch\n"); } /* At least one component must be present. */ if (!jas_image_numcmpts(dec->image)) { jas_eprintf("error: no components\n"); goto error; } /* Determine if all components have the same data type. */ samedtype = true; dtype = jas_image_cmptdtype(dec->image, 0); for (i = 1; i < JAS_CAST(uint, jas_image_numcmpts(dec->image)); ++i) { if (jas_image_cmptdtype(dec->image, i) != dtype) { samedtype = false; break; } } /* Is the component data type indicated in the IHDR box consistent with the data in the code stream? */ if ((samedtype && dec->ihdr->data.ihdr.bpc != JP2_DTYPETOBPC(dtype)) || (!samedtype && dec->ihdr->data.ihdr.bpc != JP2_IHDR_BPCNULL)) { jas_eprintf("warning: component data type mismatch\n"); } /* Is the compression type supported? */ if (dec->ihdr->data.ihdr.comptype != JP2_IHDR_COMPTYPE) { jas_eprintf("error: unsupported compression type\n"); goto error; } if (dec->bpcc) { /* Is the number of components indicated in the BPCC box consistent with the code stream data? */ if (dec->bpcc->data.bpcc.numcmpts != JAS_CAST(uint, jas_image_numcmpts( dec->image))) { jas_eprintf("warning: number of components mismatch\n"); } /* Is the component data type information indicated in the BPCC box consistent with the code stream data? */ if (!samedtype) { for (i = 0; i < JAS_CAST(uint, jas_image_numcmpts(dec->image)); ++i) { if (jas_image_cmptdtype(dec->image, i) != JP2_BPCTODTYPE(dec->bpcc->data.bpcc.bpcs[i])) { jas_eprintf("warning: component data type mismatch\n"); } } } else { jas_eprintf("warning: superfluous BPCC box\n"); } } /* A COLR box must be present. */ if (!dec->colr) { jas_eprintf("error: no COLR box\n"); goto error; } switch (dec->colr->data.colr.method) { case JP2_COLR_ENUM: jas_image_setclrspc(dec->image, jp2_getcs(&dec->colr->data.colr)); break; case JP2_COLR_ICC: iccprof = jas_iccprof_createfrombuf(dec->colr->data.colr.iccp, dec->colr->data.colr.iccplen); assert(iccprof); jas_iccprof_gethdr(iccprof, &icchdr); jas_eprintf("ICC Profile CS %08x\n", icchdr.colorspc); jas_image_setclrspc(dec->image, fromiccpcs(icchdr.colorspc)); dec->image->cmprof_ = jas_cmprof_createfromiccprof(iccprof); assert(dec->image->cmprof_); jas_iccprof_destroy(iccprof); break; } /* If a CMAP box is present, a PCLR box must also be present. */ if (dec->cmap && !dec->pclr) { jas_eprintf("warning: missing PCLR box or superfluous CMAP box\n"); jp2_box_destroy(dec->cmap); dec->cmap = 0; } /* If a CMAP box is not present, a PCLR box must not be present. */ if (!dec->cmap && dec->pclr) { jas_eprintf("warning: missing CMAP box or superfluous PCLR box\n"); jp2_box_destroy(dec->pclr); dec->pclr = 0; } /* Determine the number of channels (which is essentially the number of components after any palette mappings have been applied). */ dec->numchans = dec->cmap ? dec->cmap->data.cmap.numchans : JAS_CAST(uint, jas_image_numcmpts(dec->image)); /* Perform a basic sanity check on the CMAP box if present. */ if (dec->cmap) { for (i = 0; i < dec->numchans; ++i) { /* Is the component number reasonable? */ if (dec->cmap->data.cmap.ents[i].cmptno >= JAS_CAST(uint, jas_image_numcmpts(dec->image))) { jas_eprintf("error: invalid component number in CMAP box\n"); goto error; } /* Is the LUT index reasonable? */ if (dec->cmap->data.cmap.ents[i].pcol >= dec->pclr->data.pclr.numchans) { jas_eprintf("error: invalid CMAP LUT index\n"); goto error; } } } /* Allocate space for the channel-number to component-number LUT. */ if (!(dec->chantocmptlut = jas_malloc(dec->numchans * sizeof(uint_fast16_t)))) { jas_eprintf("error: no memory\n"); goto error; } if (!dec->cmap) { for (i = 0; i < dec->numchans; ++i) { dec->chantocmptlut[i] = i; } } else { cmapd = &dec->cmap->data.cmap; pclrd = &dec->pclr->data.pclr; cdefd = &dec->cdef->data.cdef; for (channo = 0; channo < cmapd->numchans; ++channo) { cmapent = &cmapd->ents[channo]; if (cmapent->map == JP2_CMAP_DIRECT) { dec->chantocmptlut[channo] = channo; } else if (cmapent->map == JP2_CMAP_PALETTE) { lutents = jas_malloc(pclrd->numlutents * sizeof(int_fast32_t)); for (i = 0; i < pclrd->numlutents; ++i) { lutents[i] = pclrd->lutdata[cmapent->pcol + i * pclrd->numchans]; } newcmptno = jas_image_numcmpts(dec->image); jas_image_depalettize(dec->image, cmapent->cmptno, pclrd->numlutents, lutents, JP2_BPCTODTYPE(pclrd->bpc[cmapent->pcol]), newcmptno); dec->chantocmptlut[channo] = newcmptno; jas_free(lutents); #if 0 if (dec->cdef) { cdefent = jp2_cdef_lookup(cdefd, channo); if (!cdefent) { abort(); } jas_image_setcmpttype(dec->image, newcmptno, jp2_getct(jas_image_clrspc(dec->image), cdefent->type, cdefent->assoc)); } else { jas_image_setcmpttype(dec->image, newcmptno, jp2_getct(jas_image_clrspc(dec->image), 0, channo + 1)); } #endif } } } /* Mark all components as being of unknown type. */ for (i = 0; i < JAS_CAST(uint, jas_image_numcmpts(dec->image)); ++i) { jas_image_setcmpttype(dec->image, i, JAS_IMAGE_CT_UNKNOWN); } /* Determine the type of each component. */ if (dec->cdef) { for (i = 0; i < dec->numchans; ++i) { jas_image_setcmpttype(dec->image, dec->chantocmptlut[dec->cdef->data.cdef.ents[i].channo], jp2_getct(jas_image_clrspc(dec->image), dec->cdef->data.cdef.ents[i].type, dec->cdef->data.cdef.ents[i].assoc)); } } else { for (i = 0; i < dec->numchans; ++i) { jas_image_setcmpttype(dec->image, dec->chantocmptlut[i], jp2_getct(jas_image_clrspc(dec->image), 0, i + 1)); } } /* Delete any components that are not of interest. */ for (i = jas_image_numcmpts(dec->image); i > 0; --i) { if (jas_image_cmpttype(dec->image, i - 1) == JAS_IMAGE_CT_UNKNOWN) { jas_image_delcmpt(dec->image, i - 1); } } /* Ensure that some components survived. */ if (!jas_image_numcmpts(dec->image)) { jas_eprintf("error: no components\n"); goto error; } #if 0 fprintf(stderr, "no of components is %d\n", jas_image_numcmpts(dec->image)); #endif /* Prevent the image from being destroyed later. */ image = dec->image; dec->image = 0; jp2_dec_destroy(dec); return image; error: if (box) { jp2_box_destroy(box); } if (dec) { jp2_dec_destroy(dec); } return 0; } int jp2_validate(jas_stream_t *in) { char buf[JP2_VALIDATELEN]; int i; int n; #if 0 jas_stream_t *tmpstream; jp2_box_t *box; #endif assert(JAS_STREAM_MAXPUTBACK >= JP2_VALIDATELEN); /* Read the validation data (i.e., the data used for detecting the format). */ if ((n = jas_stream_read(in, buf, JP2_VALIDATELEN)) < 0) { ... 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