/*
 * Copyright (c) 2002-2003 Michael David Adams.
 * All rights reserved.
 */

/* __START_OF_JASPER_LICENSE__
 *
 * JasPer License Version 2.0
 *
 * Copyright (c) 2001-2006 Michael David Adams
 * Copyright (c) 1999-2000 Image Power, Inc.
 * Copyright (c) 1999-2000 The University of British Columbia
 *
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person (the
 * "User") obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so, subject to the
 * following conditions:
 *
 * 1.  The above copyright notices and this permission notice (which
 * includes the disclaimer below) shall be included in all copies or
 * substantial portions of the Software.
 *
 * 2.  The name of a copyright holder shall not be used to endorse or
 * promote products derived from the Software without specific prior
 * written permission.
 *
 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
 * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
 * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
 * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
 * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
 *
 * __END_OF_JASPER_LICENSE__
 */

#include <assert.h>
#include <jasper/jas_config.h>
#include <jasper/jas_types.h>
#include <jasper/jas_malloc.h>
#include <jasper/jas_debug.h>
#include <jasper/jas_icc.h>
#include <jasper/jas_cm.h>
#include <jasper/jas_stream.h>
#include <jasper/jas_string.h>

#include <stdlib.h>
#include <ctype.h>

#define	jas_iccputuint8(out, val)	jas_iccputuint(out, 1, val)
#define	jas_iccputuint16(out, val)	jas_iccputuint(out, 2, val)
#define	jas_iccputsint32(out, val)	jas_iccputsint(out, 4, val)
#define	jas_iccputuint32(out, val)	jas_iccputuint(out, 4, val)
#define	jas_iccputuint64(out, val)	jas_iccputuint(out, 8, val)

static jas_iccattrval_t* jas_iccattrval_create0(void);

static int jas_iccgetuint(jas_stream_t* in, int n, ulonglong* val);
static int jas_iccgetuint8(jas_stream_t* in, jas_iccuint8_t* val);
static int jas_iccgetuint16(jas_stream_t* in, jas_iccuint16_t* val);
static int jas_iccgetsint32(jas_stream_t* in, jas_iccsint32_t* val);
static int jas_iccgetuint32(jas_stream_t* in, jas_iccuint32_t* val);
static int jas_iccgetuint64(jas_stream_t* in, jas_iccuint64_t* val);
static int jas_iccputuint(jas_stream_t* out, int n, ulonglong val);
static int jas_iccputsint(jas_stream_t* out, int n, longlong val);
static jas_iccprof_t* jas_iccprof_create(void);
static int jas_iccprof_readhdr(jas_stream_t* in, jas_icchdr_t* hdr);
static int jas_iccprof_writehdr(jas_stream_t* out, jas_icchdr_t* hdr);
static int jas_iccprof_gettagtab(jas_stream_t* in, jas_icctagtab_t* tagtab);
static void jas_iccprof_sorttagtab(jas_icctagtab_t* tagtab);
static int jas_iccattrtab_lookup(jas_iccattrtab_t* attrtab, jas_iccuint32_t name);
static jas_iccattrtab_t* jas_iccattrtab_copy(jas_iccattrtab_t* attrtab);
static jas_iccattrvalinfo_t* jas_iccattrvalinfo_lookup(jas_iccsig_t name);
static int jas_iccgettime(jas_stream_t* in, jas_icctime_t* time);
static int jas_iccgetxyz(jas_stream_t* in, jas_iccxyz_t* xyz);
static int jas_icctagtabent_cmp(const void* src, const void* dst);

static void jas_icccurv_destroy(jas_iccattrval_t* attrval);
static int jas_icccurv_copy(jas_iccattrval_t* attrval,
                            jas_iccattrval_t* othattrval);
static int jas_icccurv_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                             int cnt);
static int jas_icccurv_getsize(jas_iccattrval_t* attrval);
static int jas_icccurv_output(jas_iccattrval_t* attrval, jas_stream_t* out);
static void jas_icccurv_dump(jas_iccattrval_t* attrval, FILE* out);

static void jas_icctxtdesc_destroy(jas_iccattrval_t* attrval);
static int jas_icctxtdesc_copy(jas_iccattrval_t* attrval,
                               jas_iccattrval_t* othattrval);
static int jas_icctxtdesc_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                                int cnt);
static int jas_icctxtdesc_getsize(jas_iccattrval_t* attrval);
static int jas_icctxtdesc_output(jas_iccattrval_t* attrval, jas_stream_t* out);
static void jas_icctxtdesc_dump(jas_iccattrval_t* attrval, FILE* out);

static void jas_icctxt_destroy(jas_iccattrval_t* attrval);
static int jas_icctxt_copy(jas_iccattrval_t* attrval,
                           jas_iccattrval_t* othattrval);
static int jas_icctxt_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                            int cnt);
static int jas_icctxt_getsize(jas_iccattrval_t* attrval);
static int jas_icctxt_output(jas_iccattrval_t* attrval, jas_stream_t* out);
static void jas_icctxt_dump(jas_iccattrval_t* attrval, FILE* out);

static int jas_iccxyz_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                            int cnt);
static int jas_iccxyz_getsize(jas_iccattrval_t* attrval);
static int jas_iccxyz_output(jas_iccattrval_t* attrval, jas_stream_t* out);
static void jas_iccxyz_dump(jas_iccattrval_t* attrval, FILE* out);

static jas_iccattrtab_t* jas_iccattrtab_create(void);
static void jas_iccattrtab_destroy(jas_iccattrtab_t* tab);
static int jas_iccattrtab_resize(jas_iccattrtab_t* tab, int maxents);
static int jas_iccattrtab_add(jas_iccattrtab_t* attrtab, int i,
                              jas_iccuint32_t name, jas_iccattrval_t* val);
static int jas_iccattrtab_replace(jas_iccattrtab_t* attrtab, int i,
                                  jas_iccuint32_t name, jas_iccattrval_t* val);
static void jas_iccattrtab_delete(jas_iccattrtab_t* attrtab, int i);
static long jas_iccpadtomult(long x, long y);
static int jas_iccattrtab_get(jas_iccattrtab_t* attrtab, int i,
                              jas_iccattrname_t* name, jas_iccattrval_t** val);
static int jas_iccprof_puttagtab(jas_stream_t* out, jas_icctagtab_t* tagtab);

static void jas_icclut16_destroy(jas_iccattrval_t* attrval);
static int jas_icclut16_copy(jas_iccattrval_t* attrval,
                             jas_iccattrval_t* othattrval);
static int jas_icclut16_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                              int cnt);
static int jas_icclut16_getsize(jas_iccattrval_t* attrval);
static int jas_icclut16_output(jas_iccattrval_t* attrval, jas_stream_t* out);
static void jas_icclut16_dump(jas_iccattrval_t* attrval, FILE* out);

static void jas_icclut8_destroy(jas_iccattrval_t* attrval);
static int jas_icclut8_copy(jas_iccattrval_t* attrval,
                            jas_iccattrval_t* othattrval);
static int jas_icclut8_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                             int cnt);
static int jas_icclut8_getsize(jas_iccattrval_t* attrval);
static int jas_icclut8_output(jas_iccattrval_t* attrval, jas_stream_t* out);
static void jas_icclut8_dump(jas_iccattrval_t* attrval, FILE* out);

static int jas_iccputtime(jas_stream_t* out, jas_icctime_t* ctime);
static int jas_iccputxyz(jas_stream_t* out, jas_iccxyz_t* xyz);

static long jas_iccpowi(int x, int n);

static char* jas_iccsigtostr(int sig, char* buf);


jas_iccattrvalinfo_t jas_iccattrvalinfos[] = {
    {
        JAS_ICC_TYPE_CURV, {
            jas_icccurv_destroy, jas_icccurv_copy,
            jas_icccurv_input, jas_icccurv_output, jas_icccurv_getsize,
            jas_icccurv_dump
        }
    },
    {
        JAS_ICC_TYPE_XYZ, {
            0, 0, jas_iccxyz_input, jas_iccxyz_output,
            jas_iccxyz_getsize, jas_iccxyz_dump
        }
    },
    {
        JAS_ICC_TYPE_TXTDESC, {
            jas_icctxtdesc_destroy,
            jas_icctxtdesc_copy, jas_icctxtdesc_input, jas_icctxtdesc_output,
            jas_icctxtdesc_getsize, jas_icctxtdesc_dump
        }
    },
    {
        JAS_ICC_TYPE_TXT, {
            jas_icctxt_destroy, jas_icctxt_copy,
            jas_icctxt_input, jas_icctxt_output, jas_icctxt_getsize,
            jas_icctxt_dump
        }
    },
    {
        JAS_ICC_TYPE_LUT8, {
            jas_icclut8_destroy, jas_icclut8_copy,
            jas_icclut8_input, jas_icclut8_output, jas_icclut8_getsize,
            jas_icclut8_dump
        }
    },
    {
        JAS_ICC_TYPE_LUT16, {
            jas_icclut16_destroy, jas_icclut16_copy,
            jas_icclut16_input, jas_icclut16_output, jas_icclut16_getsize,
            jas_icclut16_dump
        }
    },
    {0, {0, 0, 0, 0, 0, 0}}
};

typedef struct {
    jas_iccuint32_t tag;
    char* name;
} jas_icctaginfo_t;

/******************************************************************************\
* profile class
\******************************************************************************/

static jas_iccprof_t* jas_iccprof_create() {
    jas_iccprof_t* prof;
    prof = 0;
    if (!(prof = jas_malloc(sizeof(jas_iccprof_t)))) {
        goto error;
    }
    if (!(prof->attrtab = jas_iccattrtab_create())) {
        goto error;
    }
    memset(&prof->hdr, 0, sizeof(jas_icchdr_t));
    prof->tagtab.numents = 0;
    prof->tagtab.ents = 0;
    return prof;
error:
    if (prof) {
        jas_iccprof_destroy(prof);
    }
    return 0;
}

jas_iccprof_t* jas_iccprof_copy(jas_iccprof_t* prof) {
    jas_iccprof_t* newprof;
    newprof = 0;
    if (!(newprof = jas_iccprof_create())) {
        goto error;
    }
    newprof->hdr = prof->hdr;
    newprof->tagtab.numents = 0;
    newprof->tagtab.ents = 0;
    assert(newprof->attrtab);
    jas_iccattrtab_destroy(newprof->attrtab);
    if (!(newprof->attrtab = jas_iccattrtab_copy(prof->attrtab))) {
        goto error;
    }
    return newprof;
error:
    if (newprof) {
        jas_iccprof_destroy(newprof);
    }
    return 0;
}

void jas_iccprof_destroy(jas_iccprof_t* prof) {
    if (prof->attrtab) {
        jas_iccattrtab_destroy(prof->attrtab);
    }
    if (prof->tagtab.ents) {
        jas_free(prof->tagtab.ents);
    }
    jas_free(prof);
}

void jas_iccprof_dump(jas_iccprof_t* prof, FILE* out) {
    jas_iccattrtab_dump(prof->attrtab, out);
}

jas_iccprof_t* jas_iccprof_load(jas_stream_t* in) {
    jas_iccprof_t* prof;
    int numtags;
    long curoff;
    long reloff;
    long prevoff;
    jas_iccsig_t type;
    jas_iccattrval_t* attrval;
    jas_iccattrval_t* prevattrval;
    jas_icctagtabent_t* tagtabent;
    jas_iccattrvalinfo_t* attrvalinfo;
    int i;
    int len;

    prof = 0;
    attrval = 0;

    if (!(prof = jas_iccprof_create())) {
        goto error;
    }

    if (jas_iccprof_readhdr(in, &prof->hdr)) {
        jas_eprintf("cannot get header\n");
        goto error;
    }
    if (jas_iccprof_gettagtab(in, &prof->tagtab)) {
        jas_eprintf("cannot get tab table\n");
        goto error;
    }
    jas_iccprof_sorttagtab(&prof->tagtab);

    numtags = prof->tagtab.numents;
    curoff = JAS_ICC_HDRLEN + 4 + 12 * numtags;
    prevoff = 0;
    prevattrval = 0;
    for (i = 0; i < numtags; ++i) {
        tagtabent = &prof->tagtab.ents[i];
        if (tagtabent->off == JAS_CAST(jas_iccuint32_t, prevoff)) {
            if (prevattrval) {
                if (!(attrval = jas_iccattrval_clone(prevattrval))) {
                    goto error;
                }
                if (jas_iccprof_setattr(prof, tagtabent->tag, attrval)) {
                    goto error;
                }
                jas_iccattrval_destroy(attrval);
            } else {
#if 0
                jas_eprintf("warning: skipping unknown tag type\n");
#endif
            }
            continue;
        }
        reloff = tagtabent->off - curoff;
        if (reloff > 0) {
            if (jas_stream_gobble(in, reloff) != reloff) {
                goto error;
            }
            curoff += reloff;
        } else if (reloff < 0) {
            /* This should never happen since we read the tagged
            element data in a single pass. */
            abort();
        }
        prevoff = curoff;
        if (jas_iccgetuint32(in, &type)) {
            goto error;
        }
        if (jas_stream_gobble(in, 4) != 4) {
            goto error;
        }
        curoff += 8;
        if (!(attrvalinfo = jas_iccattrvalinfo_lookup(type))) {
#if 0
            jas_eprintf("warning: skipping unknown tag type\n");
#endif
            prevattrval = 0;
            continue;
        }
        if (!(attrval = jas_iccattrval_create(type))) {
            goto error;
        }
        len = tagtabent->len - 8;
        if ((*attrval->ops->input)(attrval, in, len)) {
            goto error;
        }
        curoff += len;
        if (jas_iccprof_setattr(prof, tagtabent->tag, attrval)) {
            goto error;
        }
        prevattrval = attrval; /* This is correct, but slimey. */
        jas_iccattrval_destroy(attrval);
        attrval = 0;
    }

    return prof;

error:
    if (prof) {
        jas_iccprof_destroy(prof);
    }
    if (attrval) {
        jas_iccattrval_destroy(attrval);
    }
    return 0;
}

int jas_iccprof_save(jas_iccprof_t* prof, jas_stream_t* out) {
    long curoff;
    long reloff;
    long newoff;
    int i;
    int j;
    jas_icctagtabent_t* tagtabent;
    jas_icctagtabent_t* sharedtagtabent;
    jas_icctagtabent_t* tmptagtabent;
    jas_iccuint32_t attrname;
    jas_iccattrval_t* attrval;
    jas_icctagtab_t* tagtab;

    tagtab = &prof->tagtab;
    if (!(tagtab->ents = jas_malloc(prof->attrtab->numattrs *
                                    sizeof(jas_icctagtabent_t)))) {
        goto error;
    }
    tagtab->numents = prof->attrtab->numattrs;
    curoff = JAS_ICC_HDRLEN + 4 + 12 * tagtab->numents;
    for (i = 0; i < JAS_CAST(int, tagtab->numents); ++i) {
        tagtabent = &tagtab->ents[i];
        if (jas_iccattrtab_get(prof->attrtab, i, &attrname, &attrval)) {
            goto error;
        }
        assert(attrval->ops->output);
        tagtabent->tag = attrname;
        tagtabent->data = &attrval->data;
        sharedtagtabent = 0;
        for (j = 0; j < i; ++j) {
            tmptagtabent = &tagtab->ents[j];
            if (tagtabent->data == tmptagtabent->data) {
                sharedtagtabent = tmptagtabent;
                break;
            }
        }
        if (sharedtagtabent) {
            tagtabent->off = sharedtagtabent->off;
            tagtabent->len = sharedtagtabent->len;
            tagtabent->first = sharedtagtabent;
        } else {
            tagtabent->off = curoff;
            tagtabent->len = (*attrval->ops->getsize)(attrval) + 8;
            tagtabent->first = 0;
            if (i < JAS_CAST(int, tagtab->numents - 1)) {
                curoff = jas_iccpadtomult(curoff + tagtabent->len, 4);
            } else {
                curoff += tagtabent->len;
            }
        }
        jas_iccattrval_destroy(attrval);
    }
    prof->hdr.size = curoff;
    if (jas_iccprof_writehdr(out, &prof->hdr)) {
        goto error;
    }
    if (jas_iccprof_puttagtab(out, &prof->tagtab)) {
        goto error;
    }
    curoff = JAS_ICC_HDRLEN + 4 + 12 * tagtab->numents;
    for (i = 0; i < JAS_CAST(int, tagtab->numents);) {
        tagtabent = &tagtab->ents[i];
        assert(curoff == JAS_CAST(long, tagtabent->off));
        if (jas_iccattrtab_get(prof->attrtab, i, &attrname, &attrval)) {
            goto error;
        }
        if (jas_iccputuint32(out, attrval->type) || jas_stream_pad(out,
                4, 0) != 4) {
            goto error;
        }
        if ((*attrval->ops->output)(attrval, out)) {
            goto error;
        }
        jas_iccattrval_destroy(attrval);
        curoff += tagtabent->len;
        ++i;
        while (i < JAS_CAST(int, tagtab->numents) &&
                tagtab->ents[i].first) {
            ++i;
        }
        newoff = (i < JAS_CAST(int, tagtab->numents)) ?
                 tagtab->ents[i].off : prof->hdr.size;
        reloff = newoff - curoff;
        assert(reloff >= 0);
        if (reloff > 0) {
            if (jas_stream_pad(out, reloff, 0) != reloff) {
                goto error;
            }
            curoff += reloff;
        }
    }
    return 0;
error:
    /* XXX - need to free some resources here */
    return -1;
}

static int jas_iccprof_writehdr(jas_stream_t* out, jas_icchdr_t* hdr) {
    if (jas_iccputuint32(out, hdr->size) ||
            jas_iccputuint32(out, hdr->cmmtype) ||
            jas_iccputuint32(out, hdr->version) ||
            jas_iccputuint32(out, hdr->clas) ||
            jas_iccputuint32(out, hdr->colorspc) ||
            jas_iccputuint32(out, hdr->refcolorspc) ||
            jas_iccputtime(out, &hdr->ctime) ||
            jas_iccputuint32(out, hdr->magic) ||
            jas_iccputuint32(out, hdr->platform) ||
            jas_iccputuint32(out, hdr->flags) ||
            jas_iccputuint32(out, hdr->maker) ||
            jas_iccputuint32(out, hdr->model) ||
            jas_iccputuint64(out, hdr->attr) ||
            jas_iccputuint32(out, hdr->intent) ||
            jas_iccputxyz(out, &hdr->illum) ||
            jas_iccputuint32(out, hdr->creator) ||
            jas_stream_pad(out, 44, 0) != 44) {
        return -1;
    }
    return 0;
}

static int jas_iccprof_puttagtab(jas_stream_t* out, jas_icctagtab_t* tagtab) {
    int i;
    jas_icctagtabent_t* tagtabent;
    if (jas_iccputuint32(out, tagtab->numents)) {
        goto error;
    }
    for (i = 0; i < JAS_CAST(int, tagtab->numents); ++i) {
        tagtabent = &tagtab->ents[i];
        if (jas_iccputuint32(out, tagtabent->tag) ||
                jas_iccputuint32(out, tagtabent->off) ||
                jas_iccputuint32(out, tagtabent->len)) {
            goto error;
        }
    }
    return 0;
error:
    return -1;
}

static int jas_iccprof_readhdr(jas_stream_t* in, jas_icchdr_t* hdr) {
    if (jas_iccgetuint32(in, &hdr->size) ||
            jas_iccgetuint32(in, &hdr->cmmtype) ||
            jas_iccgetuint32(in, &hdr->version) ||
            jas_iccgetuint32(in, &hdr->clas) ||
            jas_iccgetuint32(in, &hdr->colorspc) ||
            jas_iccgetuint32(in, &hdr->refcolorspc) ||
            jas_iccgettime(in, &hdr->ctime) ||
            jas_iccgetuint32(in, &hdr->magic) ||
            jas_iccgetuint32(in, &hdr->platform) ||
            jas_iccgetuint32(in, &hdr->flags) ||
            jas_iccgetuint32(in, &hdr->maker) ||
            jas_iccgetuint32(in, &hdr->model) ||
            jas_iccgetuint64(in, &hdr->attr) ||
            jas_iccgetuint32(in, &hdr->intent) ||
            jas_iccgetxyz(in, &hdr->illum) ||
            jas_iccgetuint32(in, &hdr->creator) ||
            jas_stream_gobble(in, 44) != 44) {
        return -1;
    }
    return 0;
}

static int jas_iccprof_gettagtab(jas_stream_t* in, jas_icctagtab_t* tagtab) {
    int i;
    jas_icctagtabent_t* tagtabent;

    if (tagtab->ents) {
        jas_free(tagtab->ents);
        tagtab->ents = 0;
    }
    if (jas_iccgetuint32(in, &tagtab->numents)) {
        goto error;
    }
    if (!(tagtab->ents = jas_malloc(tagtab->numents *
                                    sizeof(jas_icctagtabent_t)))) {
        goto error;
    }
    tagtabent = tagtab->ents;
    for (i = 0; i < JAS_CAST(long, tagtab->numents); ++i) {
        if (jas_iccgetuint32(in, &tagtabent->tag) ||
                jas_iccgetuint32(in, &tagtabent->off) ||
                jas_iccgetuint32(in, &tagtabent->len)) {
            goto error;
        }
        ++tagtabent;
    }
    return 0;
error:
    if (tagtab->ents) {
        jas_free(tagtab->ents);
        tagtab->ents = 0;
    }
    return -1;
}

jas_iccattrval_t* jas_iccprof_getattr(jas_iccprof_t* prof,
                                      jas_iccattrname_t name) {
    int i;
    jas_iccattrval_t* attrval;
    if ((i = jas_iccattrtab_lookup(prof->attrtab, name)) < 0) {
        goto error;
    }
    if (!(attrval = jas_iccattrval_clone(prof->attrtab->attrs[i].val))) {
        goto error;
    }
    return attrval;
error:
    return 0;
}

int jas_iccprof_setattr(jas_iccprof_t* prof, jas_iccattrname_t name,
                        jas_iccattrval_t* val) {
    int i;
    if ((i = jas_iccattrtab_lookup(prof->attrtab, name)) >= 0) {
        if (val) {
            if (jas_iccattrtab_replace(prof->attrtab, i, name, val)) {
                goto error;
            }
        } else {
            jas_iccattrtab_delete(prof->attrtab, i);
        }
    } else {
        if (val) {
            if (jas_iccattrtab_add(prof->attrtab, -1, name, val)) {
                goto error;
            }
        } else {
            /* NOP */
        }
    }
    return 0;
error:
    return -1;
}

int jas_iccprof_gethdr(jas_iccprof_t* prof, jas_icchdr_t* hdr) {
    *hdr = prof->hdr;
    return 0;
}

int jas_iccprof_sethdr(jas_iccprof_t* prof, jas_icchdr_t* hdr) {
    prof->hdr = *hdr;
    return 0;
}

static void jas_iccprof_sorttagtab(jas_icctagtab_t* tagtab) {
    qsort(tagtab->ents, tagtab->numents, sizeof(jas_icctagtabent_t),
          jas_icctagtabent_cmp);
}

static int jas_icctagtabent_cmp(const void* src, const void* dst) {
    jas_icctagtabent_t* srctagtabent = JAS_CAST(jas_icctagtabent_t*, src);
    jas_icctagtabent_t* dsttagtabent = JAS_CAST(jas_icctagtabent_t*, dst);
    if (srctagtabent->off > dsttagtabent->off) {
        return 1;
    } else if (srctagtabent->off < dsttagtabent->off) {
        return -1;
    }
    return 0;
}

static jas_iccattrvalinfo_t* jas_iccattrvalinfo_lookup(jas_iccsig_t type) {
    jas_iccattrvalinfo_t* info;
    info = jas_iccattrvalinfos;
    for (info = jas_iccattrvalinfos; info->type; ++info) {
        if (info->type == type) {
            return info;
        }
    }
    return 0;
}

static int jas_iccgettime(jas_stream_t* in, jas_icctime_t* time) {
    if (jas_iccgetuint16(in, &time->year) ||
            jas_iccgetuint16(in, &time->month) ||
            jas_iccgetuint16(in, &time->day) ||
            jas_iccgetuint16(in, &time->hour) ||
            jas_iccgetuint16(in, &time->min) ||
            jas_iccgetuint16(in, &time->sec)) {
        return -1;
    }
    return 0;
}

static int jas_iccgetxyz(jas_stream_t* in, jas_iccxyz_t* xyz) {
    if (jas_iccgetsint32(in, &xyz->x) ||
            jas_iccgetsint32(in, &xyz->y) ||
            jas_iccgetsint32(in, &xyz->z)) {
        return -1;
    }
    return 0;
}

static int jas_iccputtime(jas_stream_t* out, jas_icctime_t* time) {
    jas_iccputuint16(out, time->year);
    jas_iccputuint16(out, time->month);
    jas_iccputuint16(out, time->day);
    jas_iccputuint16(out, time->hour);
    jas_iccputuint16(out, time->min);
    jas_iccputuint16(out, time->sec);
    return 0;
}

static int jas_iccputxyz(jas_stream_t* out, jas_iccxyz_t* xyz) {
    jas_iccputuint32(out, xyz->x);
    jas_iccputuint32(out, xyz->y);
    jas_iccputuint32(out, xyz->z);
    return 0;
}

/******************************************************************************\
* attribute table class
\******************************************************************************/

static jas_iccattrtab_t* jas_iccattrtab_create() {
    jas_iccattrtab_t* tab;
    tab = 0;
    if (!(tab = jas_malloc(sizeof(jas_iccattrtab_t)))) {
        goto error;
    }
    tab->maxattrs = 0;
    tab->numattrs = 0;
    tab->attrs = 0;
    if (jas_iccattrtab_resize(tab, 32)) {
        goto error;
    }
    return tab;
error:
    if (tab) {
        jas_iccattrtab_destroy(tab);
    }
    return 0;
}

static jas_iccattrtab_t* jas_iccattrtab_copy(jas_iccattrtab_t* attrtab) {
    jas_iccattrtab_t* newattrtab;
    int i;
    if (!(newattrtab = jas_iccattrtab_create())) {
        goto error;
    }
    for (i = 0; i < attrtab->numattrs; ++i) {
        if (jas_iccattrtab_add(newattrtab, i, attrtab->attrs[i].name,
                               attrtab->attrs[i].val)) {
            goto error;
        }
    }
    return newattrtab;
error:
    return 0;
}

static void jas_iccattrtab_destroy(jas_iccattrtab_t* tab) {
    if (tab->attrs) {
        while (tab->numattrs > 0) {
            jas_iccattrtab_delete(tab, 0);
        }
        jas_free(tab->attrs);
    }
    jas_free(tab);
}

void jas_iccattrtab_dump(jas_iccattrtab_t* attrtab, FILE* out) {
    int i;
    jas_iccattr_t* attr;
    jas_iccattrval_t* attrval;
    jas_iccattrvalinfo_t* info;
    char buf[16];
    fprintf(out, "numattrs=%d\n", attrtab->numattrs);
    fprintf(out, "---\n");
    for (i = 0; i < attrtab->numattrs; ++i) {
        attr = &attrtab->attrs[i];
        attrval = attr->val;
        info = jas_iccattrvalinfo_lookup(attrval->type);
        if (!info) { abort(); }
        fprintf(out, "attrno=%d; attrname=\"%s\"(0x%08x); attrtype=\"%s\"(0x%08x)\n",
                i,
                jas_iccsigtostr(attr->name, &buf[0]),
                attr->name,
                jas_iccsigtostr(attrval->type, &buf[8]),
                attrval->type
               );
        jas_iccattrval_dump(attrval, out);
        fprintf(out, "---\n");
    }
}

static int jas_iccattrtab_resize(jas_iccattrtab_t* tab, int maxents) {
    jas_iccattr_t* newattrs;
    assert(maxents >= tab->numattrs);
    newattrs = tab->attrs ? jas_realloc(tab->attrs, maxents *
                                        sizeof(jas_iccattr_t)) : jas_malloc(maxents * sizeof(jas_iccattr_t));
    if (!newattrs) {
        return -1;
    }
    tab->attrs = newattrs;
    tab->maxattrs = maxents;
    return 0;
}

static int jas_iccattrtab_add(jas_iccattrtab_t* attrtab, int i,
                              jas_iccuint32_t name, jas_iccattrval_t* val) {
    int n;
    jas_iccattr_t* attr;
    jas_iccattrval_t* tmpattrval;
    tmpattrval = 0;
    if (i < 0) {
        i = attrtab->numattrs;
    }
    assert(i >= 0 && i <= attrtab->numattrs);
    if (attrtab->numattrs >= attrtab->maxattrs) {
        if (jas_iccattrtab_resize(attrtab, attrtab->numattrs + 32)) {
            goto error;
        }
    }
    if (!(tmpattrval = jas_iccattrval_clone(val))) {
        goto error;
    }
    n = attrtab->numattrs - i;
    if (n > 0)
        memmove(&attrtab->attrs[i + 1], &attrtab->attrs[i],
                n * sizeof(jas_iccattr_t));
    attr = &attrtab->attrs[i];
    attr->name = name;
    attr->val = tmpattrval;
    ++attrtab->numattrs;
    return 0;
error:
    if (tmpattrval) {
        jas_iccattrval_destroy(tmpattrval);
    }
    return -1;
}

static int jas_iccattrtab_replace(jas_iccattrtab_t* attrtab, int i,
                                  jas_iccuint32_t name, jas_iccattrval_t* val) {
    jas_iccattrval_t* newval;
    jas_iccattr_t* attr;
    if (!(newval = jas_iccattrval_clone(val))) {
        goto error;
    }
    attr = &attrtab->attrs[i];
    jas_iccattrval_destroy(attr->val);
    attr->name = name;
    attr->val = newval;
    return 0;
error:
    return -1;
}

static void jas_iccattrtab_delete(jas_iccattrtab_t* attrtab, int i) {
    int n;
    jas_iccattrval_destroy(attrtab->attrs[i].val);
    if ((n = attrtab->numattrs - i - 1) > 0)
        memmove(&attrtab->attrs[i], &attrtab->attrs[i + 1],
                n * sizeof(jas_iccattr_t));
    --attrtab->numattrs;
}

static int jas_iccattrtab_get(jas_iccattrtab_t* attrtab, int i,
                              jas_iccattrname_t* name, jas_iccattrval_t** val) {
    jas_iccattr_t* attr;
    if (i < 0 || i >= attrtab->numattrs) {
        goto error;
    }
    attr = &attrtab->attrs[i];
    *name = attr->name;
    if (!(*val = jas_iccattrval_clone(attr->val))) {
        goto error;
    }
    return 0;
error:
    return -1;
}

static int jas_iccattrtab_lookup(jas_iccattrtab_t* attrtab,
                                 jas_iccuint32_t name) {
    int i;
    jas_iccattr_t* attr;
    for (i = 0; i < attrtab->numattrs; ++i) {
        attr = &attrtab->attrs[i];
        if (attr->name == name) {
            return i;
        }
    }
    return -1;
}

/******************************************************************************\
* attribute value class
\******************************************************************************/

jas_iccattrval_t* jas_iccattrval_create(jas_iccuint32_t type) {
    jas_iccattrval_t* attrval;
    jas_iccattrvalinfo_t* info;

    if (!(info = jas_iccattrvalinfo_lookup(type))) {
        goto error;
    }
    if (!(attrval = jas_iccattrval_create0())) {
        goto error;
    }
    attrval->ops = &info->ops;
    attrval->type = type;
    ++attrval->refcnt;
    memset(&attrval->data, 0, sizeof(attrval->data));
    return attrval;
error:
    return 0;
}

jas_iccattrval_t* jas_iccattrval_clone(jas_iccattrval_t* attrval) {
    ++attrval->refcnt;
    return attrval;
}

void jas_iccattrval_destroy(jas_iccattrval_t* attrval) {
#if 0
    jas_eprintf("refcnt=%d\n", attrval->refcnt);
#endif
    if (--attrval->refcnt <= 0) {
        if (attrval->ops->destroy) {
            (*attrval->ops->destroy)(attrval);
        }
        jas_free(attrval);
    }
}

void jas_iccattrval_dump(jas_iccattrval_t* attrval, FILE* out) {
    char buf[8];
    jas_iccsigtostr(attrval->type, buf);
    fprintf(out, "refcnt = %d; type = 0x%08x %s\n", attrval->refcnt,
            attrval->type, jas_iccsigtostr(attrval->type, &buf[0]));
    if (attrval->ops->dump) {
        (*attrval->ops->dump)(attrval, out);
    }
}

int jas_iccattrval_allowmodify(jas_iccattrval_t** attrvalx) {
    jas_iccattrval_t* newattrval;
    jas_iccattrval_t* attrval = *attrvalx;
    newattrval = 0;
    if (attrval->refcnt > 1) {
        if (!(newattrval = jas_iccattrval_create0())) {
            goto error;
        }
        newattrval->ops = attrval->ops;
        newattrval->type = attrval->type;
        ++newattrval->refcnt;
        if (newattrval->ops->copy) {
            if ((*newattrval->ops->copy)(newattrval, attrval)) {
                goto error;
            }
        } else {
            memcpy(&newattrval->data, &attrval->data,
                   sizeof(newattrval->data));
        }
        *attrvalx = newattrval;
    }
    return 0;
error:
    if (newattrval) {
        jas_free(newattrval);
    }
    return -1;
}

static jas_iccattrval_t* jas_iccattrval_create0() {
    jas_iccattrval_t* attrval;
    if (!(attrval = jas_malloc(sizeof(jas_iccattrval_t)))) {
        return 0;
    }
    memset(attrval, 0, sizeof(jas_iccattrval_t));
    attrval->refcnt = 0;
    attrval->ops = 0;
    attrval->type = 0;
    return attrval;
}

/******************************************************************************\
*
\******************************************************************************/

static int jas_iccxyz_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                            int len) {
    if (len != 4 * 3) { abort(); }
    return jas_iccgetxyz(in, &attrval->data.xyz);
}

static int jas_iccxyz_output(jas_iccattrval_t* attrval, jas_stream_t* out) {
    jas_iccxyz_t* xyz = &attrval->data.xyz;
    if (jas_iccputuint32(out, xyz->x) ||
            jas_iccputuint32(out, xyz->y) ||
            jas_iccputuint32(out, xyz->z)) {
        return -1;
    }
    return 0;
}

static int jas_iccxyz_getsize(jas_iccattrval_t* attrval) {
    /* Avoid compiler warnings about unused parameters. */
    attrval = 0;

    return 12;
}

static void jas_iccxyz_dump(jas_iccattrval_t* attrval, FILE* out) {
    jas_iccxyz_t* xyz = &attrval->data.xyz;
    fprintf(out, "(%f, %f, %f)\n", xyz->x / 65536.0, xyz->y / 65536.0, xyz->z / 65536.0);
}

/******************************************************************************\
* attribute table class
\******************************************************************************/

static void jas_icccurv_destroy(jas_iccattrval_t* attrval) {
    jas_icccurv_t* curv = &attrval->data.curv;
    if (curv->ents) {
        jas_free(curv->ents);
    }
}

static int jas_icccurv_copy(jas_iccattrval_t* attrval,
                            jas_iccattrval_t* othattrval) {
    /* Avoid compiler warnings about unused parameters. */
    attrval = 0;
    othattrval = 0;

    /* Not yet implemented. */
    abort();
    return -1;
}

static int jas_icccurv_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                             int cnt) {
    jas_icccurv_t* curv = &attrval->data.curv;
    unsigned int i;

    curv->numents = 0;
    curv->ents = 0;

    if (jas_iccgetuint32(in, &curv->numents)) {
        goto error;
    }
    if (!(curv->ents = jas_malloc(curv->numents * sizeof(jas_iccuint16_t)))) {
        goto error;
    }
    for (i = 0; i < curv->numents; ++i) {
        if (jas_iccgetuint16(in, &curv->ents[i])) {
            goto error;
        }
    }

    if (JAS_CAST(int, 4 + 2 * curv->numents) != cnt) {
        goto error;
    }
    return 0;

error:
    jas_icccurv_destroy(attrval);
    return -1;
}

static int jas_icccurv_getsize(jas_iccattrval_t* attrval) {
    jas_icccurv_t* curv = &attrval->data.curv;
    return 4 + 2 * curv->numents;
}

static int jas_icccurv_output(jas_iccattrval_t* attrval, jas_stream_t* out) {
    jas_icccurv_t* curv = &attrval->data.curv;
    unsigned int i;

    if (jas_iccputuint32(out, curv->numents)) {
        goto error;
    }
    for (i = 0; i < curv->numents; ++i) {
        if (jas_iccputuint16(out, curv->ents[i])) {
            goto error;
        }
    }
    return 0;
error:
    return -1;
}

static void jas_icccurv_dump(jas_iccattrval_t* attrval, FILE* out) {
    int i;
    jas_icccurv_t* curv = &attrval->data.curv;
    fprintf(out, "number of entires = %d\n", curv->numents);
    if (curv->numents == 1) {
        fprintf(out, "gamma = %f\n", curv->ents[0] / 256.0);
    } else {
        for (i = 0; i < JAS_CAST(int, curv->numents); ++i) {
            if (i < 3 || i >= JAS_CAST(int, curv->numents) - 3) {
                fprintf(out, "entry[%d] = %f\n", i, curv->ents[i] / 65535.0);
            }
        }
    }
}

/******************************************************************************\
*
\******************************************************************************/

static void jas_icctxtdesc_destroy(jas_iccattrval_t* attrval) {
    jas_icctxtdesc_t* txtdesc = &attrval->data.txtdesc;
    if (txtdesc->ascdata) {
        jas_free(txtdesc->ascdata);
    }
    if (txtdesc->ucdata) {
        jas_free(txtdesc->ucdata);
    }
}

static int jas_icctxtdesc_copy(jas_iccattrval_t* attrval,
                               jas_iccattrval_t* othattrval) {
    jas_icctxtdesc_t* txtdesc = &attrval->data.txtdesc;

    /* Avoid compiler warnings about unused parameters. */
    attrval = 0;
    othattrval = 0;
    txtdesc = 0;

    /* Not yet implemented. */
    abort();
    return -1;
}

static int jas_icctxtdesc_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                                int cnt) {
    int n;
    int c;
    jas_icctxtdesc_t* txtdesc = &attrval->data.txtdesc;
    txtdesc->ascdata = 0;
    txtdesc->ucdata = 0;
    if (jas_iccgetuint32(in, &txtdesc->asclen)) {
        goto error;
    }
    if (!(txtdesc->ascdata = jas_malloc(txtdesc->asclen))) {
        goto error;
    }
    if (jas_stream_read(in, txtdesc->ascdata, txtdesc->asclen) !=
            JAS_CAST(int, txtdesc->asclen)) {
        goto error;
    }
    txtdesc->ascdata[txtdesc->asclen - 1] = '\0';
    if (jas_iccgetuint32(in, &txtdesc->uclangcode) ||
            jas_iccgetuint32(in, &txtdesc->uclen)) {
        goto error;
    }
    if (!(txtdesc->ucdata = jas_malloc(txtdesc->uclen * 2))) {
        goto error;
    }
    if (jas_stream_read(in, txtdesc->ucdata, txtdesc->uclen * 2) !=
            JAS_CAST(int, txtdesc->uclen * 2)) {
        goto error;
    }
    if (jas_iccgetuint16(in, &txtdesc->sccode)) {
        goto error;
    }
    if ((c = jas_stream_getc(in)) == EOF) {
        goto error;
    }
    txtdesc->maclen = c;
    if (jas_stream_read(in, txtdesc->macdata, 67) != 67) {
        goto error;
    }
    txtdesc->asclen = strlen(txtdesc->ascdata) + 1;
#define WORKAROUND_BAD_PROFILES
#ifdef WORKAROUND_BAD_PROFILES
    n = txtdesc->asclen + txtdesc->uclen * 2 + 15 + 67;
    if (n > cnt) {
        return -1;
    }
    if (n < cnt) {
        if (jas_stream_gobble(in, cnt - n) != cnt - n) {
            goto error;
        }
    }
#else
    if (txtdesc->asclen + txtdesc->uclen * 2 + 15 + 67 != cnt) {
        return -1;
    }
#endif
    return 0;
error:
    jas_icctxtdesc_destroy(attrval);
    return -1;
}

static int jas_icctxtdesc_getsize(jas_iccattrval_t* attrval) {
    jas_icctxtdesc_t* txtdesc = &attrval->data.txtdesc;
    return strlen(txtdesc->ascdata) + 1 + txtdesc->uclen * 2 + 15 + 67;
}

static int jas_icctxtdesc_output(jas_iccattrval_t* attrval, jas_stream_t* out) {
    jas_icctxtdesc_t* txtdesc = &attrval->data.txtdesc;
    if (jas_iccputuint32(out, txtdesc->asclen) ||
            jas_stream_puts(out, txtdesc->ascdata) ||
            jas_stream_putc(out, 0) == EOF ||
            jas_iccputuint32(out, txtdesc->uclangcode) ||
            jas_iccputuint32(out, txtdesc->uclen) ||
            jas_stream_write(out, txtdesc->ucdata, txtdesc->uclen * 2) != JAS_CAST(int, txtdesc->uclen * 2) ||
            jas_iccputuint16(out, txtdesc->sccode) ||
            jas_stream_putc(out, txtdesc->maclen) == EOF) {
        goto error;
    }
    if (txtdesc->maclen > 0) {
        if (jas_stream_write(out, txtdesc->macdata, 67) != 67) {
            goto error;
        }
    } else {
        if (jas_stream_pad(out, 67, 0) != 67) {
            goto error;
        }
    }
    return 0;
error:
    return -1;
}

static void jas_icctxtdesc_dump(jas_iccattrval_t* attrval, FILE* out) {
    jas_icctxtdesc_t* txtdesc = &attrval->data.txtdesc;
    fprintf(out, "ascii = \"%s\"\n", txtdesc->ascdata);
    fprintf(out, "uclangcode = %d; uclen = %d\n", txtdesc->uclangcode,
            txtdesc->uclen);
    fprintf(out, "sccode = %d\n", txtdesc->sccode);
    fprintf(out, "maclen = %d\n", txtdesc->maclen);
}

/******************************************************************************\
*
\******************************************************************************/

static void jas_icctxt_destroy(jas_iccattrval_t* attrval) {
    jas_icctxt_t* txt = &attrval->data.txt;
    if (txt->string) {
        jas_free(txt->string);
    }
}

static int jas_icctxt_copy(jas_iccattrval_t* attrval,
                           jas_iccattrval_t* othattrval) {
    jas_icctxt_t* txt = &attrval->data.txt;
    jas_icctxt_t* othtxt = &othattrval->data.txt;
    if (!(txt->string = jas_strdup(othtxt->string))) {
        return -1;
    }
    return 0;
}

static int jas_icctxt_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                            int cnt) {
    jas_icctxt_t* txt = &attrval->data.txt;
    txt->string = 0;
    if (!(txt->string = jas_malloc(cnt))) {
        goto error;
    }
    if (jas_stream_read(in, txt->string, cnt) != cnt) {
        goto error;
    }
    txt->string[cnt - 1] = '\0';
    if (JAS_CAST(int, strlen(txt->string)) + 1 != cnt) {
        goto error;
    }
    return 0;
error:
    if (txt->string) {
        jas_free(txt->string);
    }
    return -1;
}

static int jas_icctxt_getsize(jas_iccattrval_t* attrval) {
    jas_icctxt_t* txt = &attrval->data.txt;
    return strlen(txt->string) + 1;
}

static int jas_icctxt_output(jas_iccattrval_t* attrval, jas_stream_t* out) {
    jas_icctxt_t* txt = &attrval->data.txt;
    if (jas_stream_puts(out, txt->string) ||
            jas_stream_putc(out, 0) == EOF) {
        return -1;
    }
    return 0;
}

static void jas_icctxt_dump(jas_iccattrval_t* attrval, FILE* out) {
    jas_icctxt_t* txt = &attrval->data.txt;
    fprintf(out, "string = \"%s\"\n", txt->string);
}

/******************************************************************************\
*
\******************************************************************************/

static void jas_icclut8_destroy(jas_iccattrval_t* attrval) {
    jas_icclut8_t* lut8 = &attrval->data.lut8;
    if (lut8->clut) {
        jas_free(lut8->clut);
    }
    if (lut8->intabs) {
        jas_free(lut8->intabs);
    }
    if (lut8->intabsbuf) {
        jas_free(lut8->intabsbuf);
    }
    if (lut8->outtabs) {
        jas_free(lut8->outtabs);
    }
    if (lut8->outtabsbuf) {
        jas_free(lut8->outtabsbuf);
    }
}

static int jas_icclut8_copy(jas_iccattrval_t* attrval,
                            jas_iccattrval_t* othattrval) {
    jas_icclut8_t* lut8 = &attrval->data.lut8;
    /* Avoid compiler warnings about unused parameters. */
    attrval = 0;
    othattrval = 0;
    lut8 = 0;
    abort();
    return -1;
}

static int jas_icclut8_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                             int cnt) {
    int i;
    int j;
    int clutsize;
    jas_icclut8_t* lut8 = &attrval->data.lut8;
    lut8->clut = 0;
    lut8->intabs = 0;
    lut8->intabsbuf = 0;
    lut8->outtabs = 0;
    lut8->outtabsbuf = 0;
    if (jas_iccgetuint8(in, &lut8->numinchans) ||
            jas_iccgetuint8(in, &lut8->numoutchans) ||
            jas_iccgetuint8(in, &lut8->clutlen) ||
            jas_stream_getc(in) == EOF) {
        goto error;
    }
    for (i = 0; i < 3; ++i) {
        for (j = 0; j < 3; ++j) {
            if (jas_iccgetsint32(in, &lut8->e[i][j])) {
                goto error;
            }
        }
    }
    if (jas_iccgetuint16(in, &lut8->numintabents) ||
            jas_iccgetuint16(in, &lut8->numouttabents)) {
        goto error;
    }
    clutsize = jas_iccpowi(lut8->clutlen, lut8->numinchans) * lut8->numoutchans;
    if (!(lut8->clut = jas_malloc(clutsize * sizeof(jas_iccuint8_t))) ||
            !(lut8->intabsbuf = jas_malloc(lut8->numinchans *
                                           lut8->numintabents * sizeof(jas_iccuint8_t))) ||
            !(lut8->intabs = jas_malloc(lut8->numinchans *
                                        sizeof(jas_iccuint8_t*)))) {
        goto error;
    }
    for (i = 0; i < lut8->numinchans; ++i) {
        lut8->intabs[i] = &lut8->intabsbuf[i * lut8->numintabents];
    }
    if (!(lut8->outtabsbuf = jas_malloc(lut8->numoutchans *
                                        lut8->numouttabents * sizeof(jas_iccuint8_t))) ||
            !(lut8->outtabs = jas_malloc(lut8->numoutchans *
                                         sizeof(jas_iccuint8_t*)))) {
        goto error;
    }
    for (i = 0; i < lut8->numoutchans; ++i) {
        lut8->outtabs[i] = &lut8->outtabsbuf[i * lut8->numouttabents];
    }
    for (i = 0; i < lut8->numinchans; ++i) {
        for (j = 0; j < JAS_CAST(int, lut8->numintabents); ++j) {
            if (jas_iccgetuint8(in, &lut8->intabs[i][j])) {
                goto error;
            }
        }
    }
    for (i = 0; i < lut8->numoutchans; ++i) {
        for (j = 0; j < JAS_CAST(int, lut8->numouttabents); ++j) {
            if (jas_iccgetuint8(in, &lut8->outtabs[i][j])) {
                goto error;
            }
        }
    }
    for (i = 0; i < clutsize; ++i) {
        if (jas_iccgetuint8(in, &lut8->clut[i])) {
            goto error;
        }
    }
    if (JAS_CAST(int, 44 + lut8->numinchans * lut8->numintabents +
                 lut8->numoutchans * lut8->numouttabents +
                 jas_iccpowi(lut8->clutlen, lut8->numinchans) * lut8->numoutchans) !=
            cnt) {
        goto error;
    }
    return 0;
error:
    jas_icclut8_destroy(attrval);
    return -1;
}

static int jas_icclut8_getsize(jas_iccattrval_t* attrval) {
    jas_icclut8_t* lut8 = &attrval->data.lut8;
    return 44 + lut8->numinchans * lut8->numintabents +
           lut8->numoutchans * lut8->numouttabents +
           jas_iccpowi(lut8->clutlen, lut8->numinchans) * lut8->numoutchans;
}

static int jas_icclut8_output(jas_iccattrval_t* attrval, jas_stream_t* out) {
    jas_icclut8_t* lut8 = &attrval->data.lut8;
    int i;
    int j;
    int n;
    lut8->clut = 0;
    lut8->intabs = 0;
    lut8->intabsbuf = 0;
    lut8->outtabs = 0;
    lut8->outtabsbuf = 0;
    if (jas_stream_putc(out, lut8->numinchans) == EOF ||
            jas_stream_putc(out, lut8->numoutchans) == EOF ||
            jas_stream_putc(out, lut8->clutlen) == EOF ||
            jas_stream_putc(out, 0) == EOF) {
        goto error;
    }
    for (i = 0; i < 3; ++i) {
        for (j = 0; j < 3; ++j) {
            if (jas_iccputsint32(out, lut8->e[i][j])) {
                goto error;
            }
        }
    }
    if (jas_iccputuint16(out, lut8->numintabents) ||
            jas_iccputuint16(out, lut8->numouttabents)) {
        goto error;
    }
    n = lut8->numinchans * lut8->numintabents;
    for (i = 0; i < n; ++i) {
        if (jas_iccputuint8(out, lut8->intabsbuf[i])) {
            goto error;
        }
    }
    n = lut8->numoutchans * lut8->numouttabents;
    for (i = 0; i < n; ++i) {
        if (jas_iccputuint8(out, lut8->outtabsbuf[i])) {
            goto error;
        }
    }
    n = jas_iccpowi(lut8->clutlen, lut8->numinchans) * lut8->numoutchans;
    for (i = 0; i < n; ++i) {
        if (jas_iccputuint8(out, lut8->clut[i])) {
            goto error;
        }
    }
    return 0;
error:
    return -1;
}

static void jas_icclut8_dump(jas_iccattrval_t* attrval, FILE* out) {
    jas_icclut8_t* lut8 = &attrval->data.lut8;
    int i;
    int j;
    fprintf(out, "numinchans=%d, numoutchans=%d, clutlen=%d\n",
            lut8->numinchans, lut8->numoutchans, lut8->clutlen);
    for (i = 0; i < 3; ++i) {
        for (j = 0; j < 3; ++j) {
            fprintf(out, "e[%d][%d]=%f ", i, j, lut8->e[i][j] / 65536.0);
        }
        fprintf(out, "\n");
    }
    fprintf(out, "numintabents=%d, numouttabents=%d\n",
            lut8->numintabents, lut8->numouttabents);
}

/******************************************************************************\
*
\******************************************************************************/

static void jas_icclut16_destroy(jas_iccattrval_t* attrval) {
    jas_icclut16_t* lut16 = &attrval->data.lut16;
    if (lut16->clut) {
        jas_free(lut16->clut);
    }
    if (lut16->intabs) {
        jas_free(lut16->intabs);
    }
    if (lut16->intabsbuf) {
        jas_free(lut16->intabsbuf);
    }
    if (lut16->outtabs) {
        jas_free(lut16->outtabs);
    }
    if (lut16->outtabsbuf) {
        jas_free(lut16->outtabsbuf);
    }
}

static int jas_icclut16_copy(jas_iccattrval_t* attrval,
                             jas_iccattrval_t* othattrval) {
    /* Avoid compiler warnings about unused parameters. */
    attrval = 0;
    othattrval = 0;
    /* Not yet implemented. */
    abort();
    return -1;
}

static int jas_icclut16_input(jas_iccattrval_t* attrval, jas_stream_t* in,
                              int cnt) {
    int i;
    int j;
    int clutsize;
    jas_icclut16_t* lut16 = &attrval->data.lut16;
    lut16->clut = 0;
    lut16->intabs = 0;
    lut16->intabsbuf = 0;
    lut16->outtabs = 0;
    lut16->outtabsbuf = 0;
    if (jas_iccgetuint8(in, &lut16->numinchans) ||
            jas_iccgetuint8(in, &lut16->numoutchans) ||
            jas_iccgetuint8(in, &lut16->clutlen) ||
            jas_stream_getc(in) == EOF) {
        goto error;
    }
    for (i = 0; i < 3; ++i) {
        for (j = 0; j < 3; ++j) {
            if (jas_iccgetsint32(in, &lut16->e[i][j])) {
                goto error;
            }
        }
    }
    if (jas_iccgetuint16(in, &lut16->numintabents) ||
            jas_iccgetuint16(in, &lut16->numouttabents)) {
        goto error;
    }
    clutsize = jas_iccpowi(lut16->clutlen, lut16->numinchans) * lut16->numoutchans;
    if (!(lut16->clut = jas_malloc(clutsize * sizeof(jas_iccuint16_t))) ||
            !(lut16->intabsbuf = jas_malloc(lut16->numinchans *
                                            lut16->numintabents * sizeof(jas_iccuint16_t))) ||
            !(lut16->intabs = jas_malloc(lut16->numinchans *
                                         sizeof(jas_iccuint16_t*)))) {
        goto error;
    }
    for (i = 0; i < lut16->numinchans; ++i) {
        lut16->intabs[i] = &lut16->intabsbuf[i * lut16->numintabents];
    }
    if (!(lut16->outtabsbuf = jas_malloc(lut16->numoutchans *
                                         lut16->numouttabents * sizeof(jas_iccuint16_t))) ||
            !(lut16->outtabs = jas_malloc(lut16->numoutchans *
                                          sizeof(jas_iccuint16_t*)))) {
        goto error;
    }
    for (i = 0; i < lut16->numoutchans; ++i) {
        lut16->outtabs[i] = &lut16->outtabsbuf[i * lut16->numouttabents];
    }
    for (i = 0; i < lut16->numinchans; ++i) {
        for (j = 0; j < JAS_CAST(int, lut16->numintabents); ++j) {
            if (jas_iccgetuint16(in, &lut16->intabs[i][j])) {
                goto error;
            }
        }
    }
    for (i = 0; i < lut16->numoutchans; ++i) {
        for (j = 0; j < JAS_CAST(int, lut16->numouttabents); ++j) {
            if (jas_iccgetuint16(in, &lut16->outtabs[i][j])) {
                goto error;
            }
        }
    }
    for (i = 0; i < clutsize; ++i) {
        if (jas_iccgetuint16(in, &lut16->clut[i])) {
            goto error;
        }
    }
    if (JAS_CAST(int, 44 + 2 *(lut16->numinchans * lut16->numintabents +
                               lut16->numoutchans * lut16->numouttabents +
                               jas_iccpowi(lut16->clutlen, lut16->numinchans) *
                               lut16->numoutchans)) != cnt) {
        goto error;
    }
    return 0;
error:
    jas_icclut16_destroy(attrval);
    return -1;
}

static int jas_icclut16_getsize(jas_iccattrval_t* attrval) {
    jas_icclut16_t* lut16 = &attrval->data.lut16;
    return 44 + 2 * (lut16->numinchans * lut16->numintabents +
                     lut16->numoutchans * lut16->numouttabents +
                     jas_iccpowi(lut16->clutlen, lut16->numinchans) * lut16->numoutchans);
}

static int jas_icclut16_output(jas_iccattrval_t* attrval, jas_stream_t* out) {
    jas_icclut16_t* lut16 = &attrval->data.lut16;
    int i;
    int j;
    int n;
    if (jas_stream_putc(out, lut16->numinchans) == EOF ||
            jas_stream_putc(out, lut16->numoutchans) == EOF ||
            jas_stream_putc(out, lut16->clutlen) == EOF ||
            jas_stream_putc(out, 0) == EOF) {
        goto error;
    }
    for (i = 0; i < 3; ++i) {
        for (j = 0; j < 3; ++j) {
            if (jas_iccputsint32(out, lut16->e[i][j])) {
                goto error;
            }
        }
    }
    if (jas_iccputuint16(out, lut16->numintabents) ||
            jas_iccputuint16(out, lut16->numouttabents)) {
        goto error;
    }
    n = lut16->numinchans * lut16->numintabents;
    for (i = 0; i < n; ++i) {
        if (jas_iccputuint16(out, lut16->intabsbuf[i])) {
            goto error;
        }
    }
    n = lut16->numoutchans * lut16->numouttabents;
    for (i = 0; i < n; ++i) {
        if (jas_iccputuint16(out, lut16->outtabsbuf[i])) {
            goto error;
        }
    }
    n = jas_iccpowi(lut16->clutlen, lut16->numinchans) * lut16->numoutchans;
    for (i = 0; i < n; ++i) {
        if (jas_iccputuint16(out, lut16->clut[i])) {
            goto error;
        }
    }
    return 0;
error:
    return -1;
}

static void jas_icclut16_dump(jas_iccattrval_t* attrval, FILE* out) {
    jas_icclut16_t* lut16 = &attrval->data.lut16;
    int i;
    int j;
    fprintf(out, "numinchans=%d, numoutchans=%d, clutlen=%d\n",
            lut16->numinchans, lut16->numoutchans, lut16->clutlen);
    for (i = 0; i < 3; ++i) {
        for (j = 0; j < 3; ++j) {
            fprintf(out, "e[%d][%d]=%f ", i, j, lut16->e[i][j] / 65536.0);
        }
        fprintf(out, "\n");
    }
    fprintf(out, "numintabents=%d, numouttabents=%d\n",
            lut16->numintabents, lut16->numouttabents);
}

/******************************************************************************\
*
\******************************************************************************/

static int jas_iccgetuint(jas_stream_t* in, int n, ulonglong* val) {
    int i;
    int c;
    ulonglong v;
    v = 0;
    for (i = n; i > 0; --i) {
        if ((c = jas_stream_getc(in)) == EOF) {
            return -1;
        }
        v = (v << 8) | c;
    }
    *val = v;
    return 0;
}

static int jas_iccgetuint8(jas_stream_t* in, jas_iccuint8_t* val) {
    int c;
    if ((c = jas_stream_getc(in)) == EOF) {
        return -1;
    }
    *val = c;
    return 0;
}

static int jas_iccgetuint16(jas_stream_t* in, jas_iccuint16_t* val) {
    ulonglong tmp;
    if (jas_iccgetuint(in, 2, &tmp)) {
        return -1;
    }
    *val = tmp;
    return 0;
}

static int jas_iccgetsint32(jas_stream_t* in, jas_iccsint32_t* val) {
    ulonglong tmp;
    if (jas_iccgetuint(in, 4, &tmp)) {
        return -1;
    }
    *val = (tmp & 0x80000000) ? (-JAS_CAST(longlong, (((~tmp) &
                                           0x7fffffff) + 1))) : JAS_CAST(longlong, tmp);
    return 0;
}

static int jas_iccgetuint32(jas_stream_t* in, jas_iccuint32_t* val) {
    ulonglong tmp;
    if (jas_iccgetuint(in, 4, &tmp)) {
        return -1;
    }
    *val = tmp;
    return 0;
}

static int jas_iccgetuint64(jas_stream_t* in, jas_iccuint64_t* val) {
    ulonglong tmp;
    if (jas_iccgetuint(in, 8, &tmp)) {
        return -1;
    }
    *val = tmp;
    return 0;
}

static int jas_iccputuint(jas_stream_t* out, int n, ulonglong val) {
    int i;
    int c;
    for (i = n; i > 0; --i) {
        c = (val >> (8 * (i - 1))) & 0xff;
        if (jas_stream_putc(out, c) == EOF) {
            return -1;
        }
    }
    return 0;
}

static int jas_iccputsint(jas_stream_t* out, int n, longlong val) {
    ulonglong tmp;
    tmp = (val < 0) ? (abort(), 0) : val;
    return jas_iccputuint(out, n, tmp);
}

/******************************************************************************\
*
\******************************************************************************/

static char* jas_iccsigtostr(int sig, char* buf) {
    int n;
    int c;
    char* bufptr;
    bufptr = buf;
    for (n = 4; n > 0; --n) {
        c = (sig >> 24) & 0xff;
        if (isalpha(c) || isdigit(c)) {
            *bufptr++ = c;
        }
        sig <<= 8;
    }
    *bufptr = '\0';
    return buf;
}

static long jas_iccpadtomult(long x, long y) {
    return ((x + y - 1) / y) * y;
}

static long jas_iccpowi(int x, int n) {
    long y;
    y = 1;
    while (--n >= 0) {
        y *= x;
    }
    return y;
}


jas_iccprof_t* jas_iccprof_createfrombuf(uchar* buf, int len) {
    jas_stream_t* in;
    jas_iccprof_t* prof;
    if (!(in = jas_stream_memopen(JAS_CAST(char*, buf), len))) {
        goto error;
    }
    if (!(prof = jas_iccprof_load(in))) {
        goto error;
    }
    jas_stream_close(in);
    return prof;
error:
    return 0;
}

jas_iccprof_t* jas_iccprof_createfromclrspc(int clrspc) {
    jas_iccprof_t* prof;
    switch (clrspc) {
    case JAS_CLRSPC_SRGB:
        prof = jas_iccprof_createfrombuf(jas_iccprofdata_srgb,
                                         jas_iccprofdata_srgblen);
        break;
    case JAS_CLRSPC_SGRAY:
        prof = jas_iccprof_createfrombuf(jas_iccprofdata_sgray,
                                         jas_iccprofdata_sgraylen);
        break;
    default:
        prof = 0;
        break;
    }
    return prof;
}
