/* * Copyright (c) 1999-2000 Image Power, Inc. and the University of * British Columbia. * Copyright (c) 2001-2002 Michael David Adams. * All rights reserved. */ /* __START_OF_JASPER_LICENSE__ * * JasPer License Version 2.0 * * Copyright (c) 2001-2006 Michael David Adams * Copyright (c) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia * * All rights reserved. * * Permission is hereby granted, free of charge, to any person (the * "User") obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, and/or sell copies of the Software, and to permit * persons to whom the Software is furnished to do so, subject to the * following conditions: * * 1. The above copyright notices and this permission notice (which * includes the disclaimer below) shall be included in all copies or * substantial portions of the Software. * * 2. The name of a copyright holder shall not be used to endorse or * promote products derived from the Software without specific prior * written permission. * * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. * * __END_OF_JASPER_LICENSE__ */ /* * JP2 Library * * $Id: jp2_cod.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $ */ /******************************************************************************\ * Includes. \******************************************************************************/ #include #include #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; } if (extlen > 0xffffffffUL) { jas_eprintf("warning: cannot handle large 64-bit box length\n"); extlen = 0xffffffffUL; } box->len = extlen; box->datalen = extlen - JP2_BOX_HDRLEN(true); } else { box->datalen = box->len - JP2_BOX_HDRLEN(false); } 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->datalen)) { jas_eprintf("cannot copy box data\n"); goto error; } jas_stream_rewind(tmpstream); if (box->ops->getdata) { if ((*box->ops->getdata)(box, tmpstream)) { jas_eprintf("cannot parse box data\n"); goto error; } } jas_stream_close(tmpstream); } if (jas_getdbglevel() >= 1) { jp2_box_dump(box, stderr); } 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->datalen - 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->datalen; 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->datalen - 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(false); 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(false))) { 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) { uint_fast64_t tmpval; int i; int c; tmpval = 0; for (i = 0; i < 8; ++i) { tmpval <<= 8; if ((c = jas_stream_getc(in)) == EOF) { return -1; } tmpval |= (c & 0xff); } *val = tmpval; return 0; } /******************************************************************************\ * 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->datalen) / 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; }