/*
 * The copyright in this software is being made available under the 2-clauses
 * BSD License, included below. This software may be subject to other third
 * party and contributor rights, including patent rights, and no such rights
 * are granted under this license.
 *
 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2014, Professor Benoit Macq
 * Copyright (c) 2001-2003, David Janssens
 * Copyright (c) 2002-2003, Yannick Verschueren
 * Copyright (c) 2003-2007, Francois-Olivier Devaux
 * Copyright (c) 2003-2014, Antonin Descampe
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <assert.h>

#include "opj_apps_config.h"
#include "openjpeg.h"
#include "color.h"

#ifdef OPJ_HAVE_LIBLCMS2
#include <lcms2.h>
#endif
#ifdef OPJ_HAVE_LIBLCMS1
#include <lcms.h>
#endif

#ifdef OPJ_USE_LEGACY
#define OPJ_CLRSPC_GRAY CLRSPC_GRAY
#define OPJ_CLRSPC_SRGB CLRSPC_SRGB
#endif

/*--------------------------------------------------------
Matrix for sYCC, Amendment 1 to IEC 61966-2-1

Y :   0.299   0.587    0.114   :R
Cb:  -0.1687 -0.3312   0.5     :G
Cr:   0.5    -0.4187  -0.0812  :B

Inverse:

R: 1        -3.68213e-05    1.40199      :Y
G: 1.00003  -0.344125      -0.714128     :Cb - 2^(prec - 1)
B: 0.999823  1.77204       -8.04142e-06  :Cr - 2^(prec - 1)

-----------------------------------------------------------*/
static void sycc_to_rgb(int offset, int upb, int y, int cb, int cr,
                        int *out_r, int *out_g, int *out_b)
{
    int r, g, b;

    cb -= offset;
    cr -= offset;
    r = y + (int)(1.402 * (float)cr);
    if (r < 0) {
        r = 0;
    } else if (r > upb) {
        r = upb;
    }
    *out_r = r;

    g = y - (int)(0.344 * (float)cb + 0.714 * (float)cr);
    if (g < 0) {
        g = 0;
    } else if (g > upb) {
        g = upb;
    }
    *out_g = g;

    b = y + (int)(1.772 * (float)cb);
    if (b < 0) {
        b = 0;
    } else if (b > upb) {
        b = upb;
    }
    *out_b = b;
}

static void sycc444_to_rgb(opj_image_t *img)
{
    int *d0, *d1, *d2, *r, *g, *b;
    const int *y, *cb, *cr;
    size_t maxw, maxh, max, i;
    int offset, upb;

    upb = (int)img->comps[0].prec;
    offset = 1 << (upb - 1);
    upb = (1 << upb) - 1;

    maxw = (size_t)img->comps[0].w;
    maxh = (size_t)img->comps[0].h;
    max = maxw * maxh;

    y = img->comps[0].data;
    cb = img->comps[1].data;
    cr = img->comps[2].data;

    d0 = r = (int*)opj_image_data_alloc(sizeof(int) * max);
    d1 = g = (int*)opj_image_data_alloc(sizeof(int) * max);
    d2 = b = (int*)opj_image_data_alloc(sizeof(int) * max);

    if (r == NULL || g == NULL || b == NULL) {
        goto fails;
    }

    for (i = 0U; i < max; ++i) {
        sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
        ++y;
        ++cb;
        ++cr;
        ++r;
        ++g;
        ++b;
    }
    opj_image_data_free(img->comps[0].data);
    img->comps[0].data = d0;
    opj_image_data_free(img->comps[1].data);
    img->comps[1].data = d1;
    opj_image_data_free(img->comps[2].data);
    img->comps[2].data = d2;
    img->color_space = OPJ_CLRSPC_SRGB;
    return;

fails:
    opj_image_data_free(r);
    opj_image_data_free(g);
    opj_image_data_free(b);
}/* sycc444_to_rgb() */

static void sycc422_to_rgb(opj_image_t *img)
{
    int *d0, *d1, *d2, *r, *g, *b;
    const int *y, *cb, *cr;
    size_t maxw, maxh, max, offx, loopmaxw;
    int offset, upb;
    size_t i;

    upb = (int)img->comps[0].prec;
    offset = 1 << (upb - 1);
    upb = (1 << upb) - 1;

    maxw = (size_t)img->comps[0].w;
    maxh = (size_t)img->comps[0].h;
    max = maxw * maxh;

    y = img->comps[0].data;
    cb = img->comps[1].data;
    cr = img->comps[2].data;

    d0 = r = (int*)opj_image_data_alloc(sizeof(int) * max);
    d1 = g = (int*)opj_image_data_alloc(sizeof(int) * max);
    d2 = b = (int*)opj_image_data_alloc(sizeof(int) * max);

    if (r == NULL || g == NULL || b == NULL) {
        goto fails;
    }

    /* if img->x0 is odd, then first column shall use Cb/Cr = 0 */
    offx = img->x0 & 1U;
    loopmaxw = maxw - offx;

    for (i = 0U; i < maxh; ++i) {
        size_t j;

        if (offx > 0U) {
            sycc_to_rgb(offset, upb, *y, 0, 0, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;
        }

        for (j = 0U; j < (loopmaxw & ~(size_t)1U); j += 2U) {
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;
            ++cb;
            ++cr;
        }
        if (j < loopmaxw) {
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;
            ++cb;
            ++cr;
        }
    }

    opj_image_data_free(img->comps[0].data);
    img->comps[0].data = d0;
    opj_image_data_free(img->comps[1].data);
    img->comps[1].data = d1;
    opj_image_data_free(img->comps[2].data);
    img->comps[2].data = d2;

    img->comps[1].w = img->comps[2].w = img->comps[0].w;
    img->comps[1].h = img->comps[2].h = img->comps[0].h;
    img->comps[1].dx = img->comps[2].dx = img->comps[0].dx;
    img->comps[1].dy = img->comps[2].dy = img->comps[0].dy;
    img->color_space = OPJ_CLRSPC_SRGB;
    return;

fails:
    opj_image_data_free(r);
    opj_image_data_free(g);
    opj_image_data_free(b);
}/* sycc422_to_rgb() */

static void sycc420_to_rgb(opj_image_t *img)
{
    int *d0, *d1, *d2, *r, *g, *b, *nr, *ng, *nb;
    const int *y, *cb, *cr, *ny;
    size_t maxw, maxh, max, offx, loopmaxw, offy, loopmaxh;
    int offset, upb;
    size_t i;

    upb = (int)img->comps[0].prec;
    offset = 1 << (upb - 1);
    upb = (1 << upb) - 1;

    maxw = (size_t)img->comps[0].w;
    maxh = (size_t)img->comps[0].h;
    max = maxw * maxh;

    y = img->comps[0].data;
    cb = img->comps[1].data;
    cr = img->comps[2].data;

    d0 = r = (int*)opj_image_data_alloc(sizeof(int) * max);
    d1 = g = (int*)opj_image_data_alloc(sizeof(int) * max);
    d2 = b = (int*)opj_image_data_alloc(sizeof(int) * max);

    if (r == NULL || g == NULL || b == NULL) {
        goto fails;
    }

    /* if img->x0 is odd, then first column shall use Cb/Cr = 0 */
    offx = img->x0 & 1U;
    loopmaxw = maxw - offx;
    /* if img->y0 is odd, then first line shall use Cb/Cr = 0 */
    offy = img->y0 & 1U;
    loopmaxh = maxh - offy;

    if (offy > 0U) {
        size_t j;

        for (j = 0; j < maxw; ++j) {
            sycc_to_rgb(offset, upb, *y, 0, 0, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;
        }
    }

    for (i = 0U; i < (loopmaxh & ~(size_t)1U); i += 2U) {
        size_t j;

        ny = y + maxw;
        nr = r + maxw;
        ng = g + maxw;
        nb = b + maxw;

        if (offx > 0U) {
            sycc_to_rgb(offset, upb, *y, 0, 0, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;
            sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
            ++ny;
            ++nr;
            ++ng;
            ++nb;
        }

        for (j = 0; j < (loopmaxw & ~(size_t)1U); j += 2U) {
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;

            sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
            ++ny;
            ++nr;
            ++ng;
            ++nb;
            sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
            ++ny;
            ++nr;
            ++ng;
            ++nb;
            ++cb;
            ++cr;
        }
        if (j < loopmaxw) {
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
            ++y;
            ++r;
            ++g;
            ++b;

            sycc_to_rgb(offset, upb, *ny, *cb, *cr, nr, ng, nb);
            ++ny;
            ++nr;
            ++ng;
            ++nb;
            ++cb;
            ++cr;
        }
        y += maxw;
        r += maxw;
        g += maxw;
        b += maxw;
    }
    if (i < loopmaxh) {
        size_t j;

        for (j = 0U; j < (maxw & ~(size_t)1U); j += 2U) {
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);

            ++y;
            ++r;
            ++g;
            ++b;

            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);

            ++y;
            ++r;
            ++g;
            ++b;
            ++cb;
            ++cr;
        }
        if (j < maxw) {
            sycc_to_rgb(offset, upb, *y, *cb, *cr, r, g, b);
        }
    }

    opj_image_data_free(img->comps[0].data);
    img->comps[0].data = d0;
    opj_image_data_free(img->comps[1].data);
    img->comps[1].data = d1;
    opj_image_data_free(img->comps[2].data);
    img->comps[2].data = d2;

    img->comps[1].w = img->comps[2].w = img->comps[0].w;
    img->comps[1].h = img->comps[2].h = img->comps[0].h;
    img->comps[1].dx = img->comps[2].dx = img->comps[0].dx;
    img->comps[1].dy = img->comps[2].dy = img->comps[0].dy;
    img->color_space = OPJ_CLRSPC_SRGB;
    return;

fails:
    opj_image_data_free(r);
    opj_image_data_free(g);
    opj_image_data_free(b);
}/* sycc420_to_rgb() */

void color_sycc_to_rgb(opj_image_t *img)
{
    if (img->numcomps < 3) {
        img->color_space = OPJ_CLRSPC_GRAY;
        return;
    }

    if ((img->comps[0].dx == 1)
            && (img->comps[1].dx == 2)
            && (img->comps[2].dx == 2)
            && (img->comps[0].dy == 1)
            && (img->comps[1].dy == 2)
            && (img->comps[2].dy == 2)) { /* horizontal and vertical sub-sample */
        sycc420_to_rgb(img);
    } else if ((img->comps[0].dx == 1)
               && (img->comps[1].dx == 2)
               && (img->comps[2].dx == 2)
               && (img->comps[0].dy == 1)
               && (img->comps[1].dy == 1)
               && (img->comps[2].dy == 1)) { /* horizontal sub-sample only */
        sycc422_to_rgb(img);
    } else if ((img->comps[0].dx == 1)
               && (img->comps[1].dx == 1)
               && (img->comps[2].dx == 1)
               && (img->comps[0].dy == 1)
               && (img->comps[1].dy == 1)
               && (img->comps[2].dy == 1)) { /* no sub-sample */
        sycc444_to_rgb(img);
    } else {
        fprintf(stderr, "%s:%d:color_sycc_to_rgb\n\tCAN NOT CONVERT\n", __FILE__,
                __LINE__);
        return;
    }
}/* color_sycc_to_rgb() */

#if defined(OPJ_HAVE_LIBLCMS2) || defined(OPJ_HAVE_LIBLCMS1)

#ifdef OPJ_HAVE_LIBLCMS1
/* Bob Friesenhahn proposed:*/
#define cmsSigXYZData   icSigXYZData
#define cmsSigLabData   icSigLabData
#define cmsSigCmykData  icSigCmykData
#define cmsSigYCbCrData icSigYCbCrData
#define cmsSigLuvData   icSigLuvData
#define cmsSigGrayData  icSigGrayData
#define cmsSigRgbData   icSigRgbData
#define cmsUInt32Number DWORD

#define cmsColorSpaceSignature icColorSpaceSignature
#define cmsGetHeaderRenderingIntent cmsTakeRenderingIntent

#endif /* OPJ_HAVE_LIBLCMS1 */

/*#define DEBUG_PROFILE*/
void color_apply_icc_profile(opj_image_t *image)
{
    cmsHPROFILE in_prof, out_prof;
    cmsHTRANSFORM transform;
    cmsColorSpaceSignature in_space, out_space;
    cmsUInt32Number intent, in_type, out_type;
    int *r, *g, *b;
    size_t nr_samples, i, max, max_w, max_h;
    int prec, ok = 0;
    OPJ_COLOR_SPACE new_space;

    in_prof = cmsOpenProfileFromMem(image->icc_profile_buf, image->icc_profile_len);
#ifdef DEBUG_PROFILE
    FILE *icm = fopen("debug.icm", "wb");
    fwrite(image->icc_profile_buf, 1, image->icc_profile_len, icm);
    fclose(icm);
#endif

    if (in_prof == NULL) {
        return;
    }

    in_space = cmsGetPCS(in_prof);
    out_space = cmsGetColorSpace(in_prof);
    intent = cmsGetHeaderRenderingIntent(in_prof);


    max_w = image->comps[0].w;
    max_h = image->comps[0].h;
    prec = (int)image->comps[0].prec;

    if (out_space == cmsSigRgbData) { /* enumCS 16 */
        unsigned int i, nr_comp = image->numcomps;

        if (nr_comp < 3) { /* GRAY or GRAYA, not RGB or RGBA */
            cmsCloseProfile(in_prof);
            return;
        }
        if (nr_comp > 4) {
            nr_comp = 4;
        }
        for (i = 1; i < nr_comp; ++i) { /* AFL test */
            if (image->comps[0].dx != image->comps[i].dx) {
                break;
            }

            if (image->comps[0].dy != image->comps[i].dy) {
                break;
            }

            if (image->comps[0].prec != image->comps[i].prec) {
                break;
            }

            if (image->comps[0].sgnd != image->comps[i].sgnd) {
                break;
            }

        }
        if (i != nr_comp) {
            cmsCloseProfile(in_prof);
            return;
        }

        if (prec <= 8) {
            in_type = TYPE_RGB_8;
            out_type = TYPE_RGB_8;
        } else {
            in_type = TYPE_RGB_16;
            out_type = TYPE_RGB_16;
        }
        out_prof = cmsCreate_sRGBProfile();
        new_space = OPJ_CLRSPC_SRGB;
    } else if (out_space == cmsSigGrayData) { /* enumCS 17 */
        in_type = TYPE_GRAY_8;
        out_type = TYPE_RGB_8;
        out_prof = cmsCreate_sRGBProfile();
        new_space = OPJ_CLRSPC_SRGB;
    } else if (out_space == cmsSigYCbCrData) { /* enumCS 18 */
        if (image->numcomps < 3) {
            cmsCloseProfile(in_prof);
            return;
        }
        in_type = TYPE_YCbCr_16;
        out_type = TYPE_RGB_16;
        out_prof = cmsCreate_sRGBProfile();
        new_space = OPJ_CLRSPC_SRGB;
    } else {
#ifdef DEBUG_PROFILE
        fprintf(stderr, "%s:%d: color_apply_icc_profile\n\tICC Profile has unknown "
                "output colorspace(%#x)(%c%c%c%c)\n\tICC Profile ignored.\n",
                __FILE__, __LINE__, out_space,
                (out_space >> 24) & 0xff, (out_space >> 16) & 0xff,
                (out_space >> 8) & 0xff, out_space & 0xff);
#endif
        cmsCloseProfile(in_prof);

        return;
    }
    if (out_prof == NULL) {
        cmsCloseProfile(in_prof);
        return;
    }

#ifdef DEBUG_PROFILE
    fprintf(stderr,
            "%s:%d:color_apply_icc_profile\n\tchannels(%d) prec(%d) w(%d) h(%d)"
            "\n\tprofile: in(%p) out(%p)\n", __FILE__, __LINE__, image->numcomps, prec,
            max_w, max_h, (void*)in_prof, (void*)out_prof);

    fprintf(stderr, "\trender_intent (%u)\n\t"
            "color_space: in(%#x)(%c%c%c%c)   out:(%#x)(%c%c%c%c)\n\t"
            "       type: in(%u)              out:(%u)\n",
            intent,
            in_space,
            (in_space >> 24) & 0xff, (in_space >> 16) & 0xff,
            (in_space >> 8) & 0xff, in_space & 0xff,

            out_space,
            (out_space >> 24) & 0xff, (out_space >> 16) & 0xff,
            (out_space >> 8) & 0xff, out_space & 0xff,

            in_type, out_type
           );
#else
    (void)prec;
    (void)in_space;
#endif /* DEBUG_PROFILE */

    transform = cmsCreateTransform(in_prof, in_type, out_prof, out_type, intent, 0);

#ifdef OPJ_HAVE_LIBLCMS2
    /* Possible for: LCMS_VERSION >= 2000 :*/
    cmsCloseProfile(in_prof);
    cmsCloseProfile(out_prof);
#endif

    if (transform == NULL) {
#ifdef DEBUG_PROFILE
        fprintf(stderr, "%s:%d:color_apply_icc_profile\n\tcmsCreateTransform failed. "
                "ICC Profile ignored.\n", __FILE__, __LINE__);
#endif

#ifdef OPJ_HAVE_LIBLCMS1
        cmsCloseProfile(in_prof);
        cmsCloseProfile(out_prof);
#endif
        return;
    }

    if (image->numcomps > 2) { /* RGB, RGBA */
        if ((image->comps[0].w == image->comps[1].w &&
                image->comps[0].w == image->comps[2].w) &&
                (image->comps[0].h == image->comps[1].h &&
                 image->comps[0].h == image->comps[2].h)) {
            if (prec <= 8) {
                unsigned char *inbuf, *outbuf, *in, *out;

                max = max_w * max_h;
                nr_samples = (size_t)(max * 3U * sizeof(unsigned char));
                in = inbuf = (unsigned char*)opj_image_data_alloc(nr_samples);
                out = outbuf = (unsigned char*)opj_image_data_alloc(nr_samples);

                if (inbuf == NULL || outbuf == NULL) {
                    goto fails0;
                }

                r = image->comps[0].data;
                g = image->comps[1].data;
                b = image->comps[2].data;

                for (i = 0U; i < max; ++i) {
                    *in++ = (unsigned char) * r++;
                    *in++ = (unsigned char) * g++;
                    *in++ = (unsigned char) * b++;
                }

                cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max);

                r = image->comps[0].data;
                g = image->comps[1].data;
                b = image->comps[2].data;

                for (i = 0U; i < max; ++i) {
                    *r++ = (int) * out++;
                    *g++ = (int) * out++;
                    *b++ = (int) * out++;
                }
                ok = 1;

fails0:
                opj_image_data_free(inbuf);
                opj_image_data_free(outbuf);
            } else { /* prec > 8 */
                unsigned short *inbuf, *outbuf, *in, *out;

                max = max_w * max_h;
                nr_samples = (size_t)(max * 3U * sizeof(unsigned short));
                in = inbuf = (unsigned short*)opj_image_data_alloc(nr_samples);
                out = outbuf = (unsigned short*)opj_image_data_alloc(nr_samples);

                if (inbuf == NULL || outbuf == NULL) {
                    goto fails1;
                }

                r = image->comps[0].data;
                g = image->comps[1].data;
                b = image->comps[2].data;

                for (i = 0U  ; i < max; ++i) {
                    *in++ = (unsigned short) * r++;
                    *in++ = (unsigned short) * g++;
                    *in++ = (unsigned short) * b++;
                }

                cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max);

                r = image->comps[0].data;
                g = image->comps[1].data;
                b = image->comps[2].data;

                for (i = 0; i < max; ++i) {
                    *r++ = (int) * out++;
                    *g++ = (int) * out++;
                    *b++ = (int) * out++;
                }
                ok = 1;

fails1:
                opj_image_data_free(inbuf);
                opj_image_data_free(outbuf);
            }
        } else {
            fprintf(stderr,
                    "[ERROR] Image components should have the same width and height\n");
            cmsDeleteTransform(transform);
            return;
        }
    } else { /* image->numcomps <= 2 : GRAY, GRAYA */
        if (prec <= 8) {
            unsigned char *in, *inbuf, *out, *outbuf;
            opj_image_comp_t *new_comps;

            max = max_w * max_h;
            nr_samples = (size_t)(max * 3 * sizeof(unsigned char));
            in = inbuf = (unsigned char*)opj_image_data_alloc(nr_samples);
            out = outbuf = (unsigned char*)opj_image_data_alloc(nr_samples);
            g = (int*)opj_image_data_alloc((size_t)max * sizeof(int));
            b = (int*)opj_image_data_alloc((size_t)max * sizeof(int));

            if (inbuf == NULL || outbuf == NULL || g == NULL || b == NULL) {
                goto fails2;
            }

            new_comps = (opj_image_comp_t*)realloc(image->comps,
                                                   (image->numcomps + 2) * sizeof(opj_image_comp_t));

            if (new_comps == NULL) {
                goto fails2;
            }

            image->comps = new_comps;

            if (image->numcomps == 2) {
                image->comps[3] = image->comps[1];
            }

            image->comps[1] = image->comps[0];
            image->comps[2] = image->comps[0];

            image->comps[1].data = g;
            image->comps[2].data = b;

            image->numcomps += 2;

            r = image->comps[0].data;

            for (i = 0U; i < max; ++i) {
                *in++ = (unsigned char) * r++;
            }
            cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max);

            r = image->comps[0].data;
            g = image->comps[1].data;
            b = image->comps[2].data;

            for (i = 0U; i < max; ++i) {
                *r++ = (int) * out++;
                *g++ = (int) * out++;
                *b++ = (int) * out++;
            }
            r = g = b = NULL;
            ok = 1;

fails2:
            opj_image_data_free(inbuf);
            opj_image_data_free(outbuf);
            opj_image_data_free(g);
            opj_image_data_free(b);
        } else { /* prec > 8 */
            unsigned short *in, *inbuf, *out, *outbuf;
            opj_image_comp_t *new_comps;

            max = max_w * max_h;
            nr_samples = (size_t)(max * 3U * sizeof(unsigned short));
            in = inbuf = (unsigned short*)opj_image_data_alloc(nr_samples);
            out = outbuf = (unsigned short*)opj_image_data_alloc(nr_samples);
            g = (int*)opj_image_data_alloc((size_t)max * sizeof(int));
            b = (int*)opj_image_data_alloc((size_t)max * sizeof(int));

            if (inbuf == NULL || outbuf == NULL || g == NULL || b == NULL) {
                goto fails3;
            }

            new_comps = (opj_image_comp_t*)realloc(image->comps,
                                                   (image->numcomps + 2) * sizeof(opj_image_comp_t));

            if (new_comps == NULL) {
                goto fails3;
            }

            image->comps = new_comps;

            if (image->numcomps == 2) {
                image->comps[3] = image->comps[1];
            }

            image->comps[1] = image->comps[0];
            image->comps[2] = image->comps[0];

            image->comps[1].data = g;
            image->comps[2].data = b;

            image->numcomps += 2;

            r = image->comps[0].data;

            for (i = 0U; i < max; ++i) {
                *in++ = (unsigned short) * r++;
            }
            cmsDoTransform(transform, inbuf, outbuf, (cmsUInt32Number)max);

            r = image->comps[0].data;
            g = image->comps[1].data;
            b = image->comps[2].data;

            for (i = 0; i < max; ++i) {
                *r++ = (int) * out++;
                *g++ = (int) * out++;
                *b++ = (int) * out++;
            }
            r = g = b = NULL;
            ok = 1;

fails3:
            opj_image_data_free(inbuf);
            opj_image_data_free(outbuf);
            opj_image_data_free(g);
            opj_image_data_free(b);
        }
    }/* if(image->numcomps > 2) */

    cmsDeleteTransform(transform);

#ifdef OPJ_HAVE_LIBLCMS1
    cmsCloseProfile(in_prof);
    cmsCloseProfile(out_prof);
#endif
    if (ok) {
        image->color_space = new_space;
    }
}/* color_apply_icc_profile() */

static int are_comps_same_dimensions(opj_image_t * image)
{
    unsigned int i;
    for (i = 1; i < image->numcomps; i++) {
        if (image->comps[0].dx != image->comps[i].dx ||
                image->comps[0].dy != image->comps[i].dy) {
            return OPJ_FALSE;
        }
    }
    return OPJ_TRUE;
}

void color_cielab_to_rgb(opj_image_t *image)
{
    int *row;
    int enumcs, numcomps;
    OPJ_COLOR_SPACE new_space;

    numcomps = (int)image->numcomps;

    if (numcomps != 3) {
        fprintf(stderr, "%s:%d:\n\tnumcomps %d not handled. Quitting.\n",
                __FILE__, __LINE__, numcomps);
        return;
    }
    if (!are_comps_same_dimensions(image)) {
        fprintf(stderr,
                "%s:%d:\n\tcomponents are not all of the same dimension. Quitting.\n",
                __FILE__, __LINE__);
        return;
    }

    row = (int*)image->icc_profile_buf;
    enumcs = row[0];

    if (enumcs == 14) { /* CIELab */
        int *L, *a, *b, *red, *green, *blue;
        int *src0, *src1, *src2, *dst0, *dst1, *dst2;
        double rl, ol, ra, oa, rb, ob, prec0, prec1, prec2;
        double minL, maxL, mina, maxa, minb, maxb;
        unsigned int default_type;
        unsigned int i, max;
        cmsHPROFILE in, out;
        cmsHTRANSFORM transform;
        cmsUInt16Number RGB[3];
        cmsCIELab Lab;

        in = cmsCreateLab4Profile(NULL);
        if (in == NULL) {
            return;
        }
        out = cmsCreate_sRGBProfile();
        if (out == NULL) {
            cmsCloseProfile(in);
            return;
        }
        transform = cmsCreateTransform(in, TYPE_Lab_DBL, out, TYPE_RGB_16,
                                       INTENT_PERCEPTUAL, 0);

#ifdef OPJ_HAVE_LIBLCMS2
        cmsCloseProfile(in);
        cmsCloseProfile(out);
#endif
        if (transform == NULL) {
#ifdef OPJ_HAVE_LIBLCMS1
            cmsCloseProfile(in);
            cmsCloseProfile(out);
#endif
            return;
        }
        new_space = OPJ_CLRSPC_SRGB;

        prec0 = (double)image->comps[0].prec;
        prec1 = (double)image->comps[1].prec;
        prec2 = (double)image->comps[2].prec;

        default_type = (unsigned int)row[1];

        if (default_type == 0x44454600) { /* DEF : default */
            rl = 100;
            ra = 170;
            rb = 200;
            ol = 0;
            oa = pow(2, prec1 - 1);
            ob = pow(2, prec2 - 2) +  pow(2, prec2 - 3);
        } else {
            rl = row[2];
            ra = row[4];
            rb = row[6];
            ol = row[3];
            oa = row[5];
            ob = row[7];
        }

        L = src0 = image->comps[0].data;
        a = src1 = image->comps[1].data;
        b = src2 = image->comps[2].data;

        max = image->comps[0].w * image->comps[0].h;

        red = dst0 = (int*)opj_image_data_alloc(max * sizeof(int));
        green = dst1 = (int*)opj_image_data_alloc(max * sizeof(int));
        blue = dst2 = (int*)opj_image_data_alloc(max * sizeof(int));

        if (red == NULL || green == NULL || blue == NULL) {
            goto fails;
        }

        minL = -(rl * ol) / (pow(2, prec0) - 1);
        maxL = minL + rl;

        mina = -(ra * oa) / (pow(2, prec1) - 1);
        maxa = mina + ra;

        minb = -(rb * ob) / (pow(2, prec2) - 1);
        maxb = minb + rb;

        for (i = 0; i < max; ++i) {
            Lab.L = minL + (double)(*L) * (maxL - minL) / (pow(2, prec0) - 1);
            ++L;
            Lab.a = mina + (double)(*a) * (maxa - mina) / (pow(2, prec1) - 1);
            ++a;
            Lab.b = minb + (double)(*b) * (maxb - minb) / (pow(2, prec2) - 1);
            ++b;

            cmsDoTransform(transform, &Lab, RGB, 1);

            *red++ = RGB[0];
            *green++ = RGB[1];
            *blue++ = RGB[2];
        }
        cmsDeleteTransform(transform);
#ifdef OPJ_HAVE_LIBLCMS1
        cmsCloseProfile(in);
        cmsCloseProfile(out);
#endif
        opj_image_data_free(src0);
        image->comps[0].data = dst0;
        opj_image_data_free(src1);
        image->comps[1].data = dst1;
        opj_image_data_free(src2);
        image->comps[2].data = dst2;

        image->color_space = new_space;
        image->comps[0].prec = 16;
        image->comps[1].prec = 16;
        image->comps[2].prec = 16;

        return;

fails:
        cmsDeleteTransform(transform);
#ifdef OPJ_HAVE_LIBLCMS1
        cmsCloseProfile(in);
        cmsCloseProfile(out);
#endif
        if (red) {
            opj_image_data_free(red);
        }
        if (green) {
            opj_image_data_free(green);
        }
        if (blue) {
            opj_image_data_free(blue);
        }
        return;
    }

    fprintf(stderr, "%s:%d:\n\tenumCS %d not handled. Ignoring.\n", __FILE__,
            __LINE__, enumcs);
}/* color_cielab_to_rgb() */

#endif /* OPJ_HAVE_LIBLCMS2 || OPJ_HAVE_LIBLCMS1 */

void color_cmyk_to_rgb(opj_image_t *image)
{
    float C, M, Y, K;
    float sC, sM, sY, sK;
    unsigned int w, h, max, i;

    w = image->comps[0].w;
    h = image->comps[0].h;

    if (
        (image->numcomps < 4)
        || (image->comps[0].dx != image->comps[1].dx) ||
        (image->comps[0].dx != image->comps[2].dx) ||
        (image->comps[0].dx != image->comps[3].dx)
        || (image->comps[0].dy != image->comps[1].dy) ||
        (image->comps[0].dy != image->comps[2].dy) ||
        (image->comps[0].dy != image->comps[3].dy)
    ) {
        fprintf(stderr, "%s:%d:color_cmyk_to_rgb\n\tCAN NOT CONVERT\n", __FILE__,
                __LINE__);
        return;
    }

    max = w * h;

    sC = 1.0F / (float)((1 << image->comps[0].prec) - 1);
    sM = 1.0F / (float)((1 << image->comps[1].prec) - 1);
    sY = 1.0F / (float)((1 << image->comps[2].prec) - 1);
    sK = 1.0F / (float)((1 << image->comps[3].prec) - 1);

    for (i = 0; i < max; ++i) {
        /* CMYK values from 0 to 1 */
        C = (float)(image->comps[0].data[i]) * sC;
        M = (float)(image->comps[1].data[i]) * sM;
        Y = (float)(image->comps[2].data[i]) * sY;
        K = (float)(image->comps[3].data[i]) * sK;

        /* Invert all CMYK values */
        C = 1.0F - C;
        M = 1.0F - M;
        Y = 1.0F - Y;
        K = 1.0F - K;

        /* CMYK -> RGB : RGB results from 0 to 255 */
        image->comps[0].data[i] = (int)(255.0F * C * K); /* R */
        image->comps[1].data[i] = (int)(255.0F * M * K); /* G */
        image->comps[2].data[i] = (int)(255.0F * Y * K); /* B */
    }

    opj_image_data_free(image->comps[3].data);
    image->comps[3].data = NULL;
    image->comps[0].prec = 8;
    image->comps[1].prec = 8;
    image->comps[2].prec = 8;
    image->numcomps -= 1;
    image->color_space = OPJ_CLRSPC_SRGB;

    for (i = 3; i < image->numcomps; ++i) {
        memcpy(&(image->comps[i]), &(image->comps[i + 1]), sizeof(image->comps[i]));
    }

}/* color_cmyk_to_rgb() */

/*
 * This code has been adopted from sjpx_openjpeg.c of ghostscript
 */
void color_esycc_to_rgb(opj_image_t *image)
{
    int y, cb, cr, sign1, sign2, val;
    unsigned int w, h, max, i;
    int flip_value = (1 << (image->comps[0].prec - 1));
    int max_value = (1 << image->comps[0].prec) - 1;

    if (
        (image->numcomps < 3)
        || (image->comps[0].dx != image->comps[1].dx) ||
        (image->comps[0].dx != image->comps[2].dx)
        || (image->comps[0].dy != image->comps[1].dy) ||
        (image->comps[0].dy != image->comps[2].dy)
    ) {
        fprintf(stderr, "%s:%d:color_esycc_to_rgb\n\tCAN NOT CONVERT\n", __FILE__,
                __LINE__);
        return;
    }

    w = image->comps[0].w;
    h = image->comps[0].h;

    sign1 = (int)image->comps[1].sgnd;
    sign2 = (int)image->comps[2].sgnd;

    max = w * h;

    for (i = 0; i < max; ++i) {

        y = image->comps[0].data[i];
        cb = image->comps[1].data[i];
        cr = image->comps[2].data[i];

        if (!sign1) {
            cb -= flip_value;
        }
        if (!sign2) {
            cr -= flip_value;
        }

        val = (int)
              ((float)y - (float)0.0000368 * (float)cb
               + (float)1.40199 * (float)cr + (float)0.5);

        if (val > max_value) {
            val = max_value;
        } else if (val < 0) {
            val = 0;
        }
        image->comps[0].data[i] = val;

        val = (int)
              ((float)1.0003 * (float)y - (float)0.344125 * (float)cb
               - (float)0.7141128 * (float)cr + (float)0.5);

        if (val > max_value) {
            val = max_value;
        } else if (val < 0) {
            val = 0;
        }
        image->comps[1].data[i] = val;

        val = (int)
              ((float)0.999823 * (float)y + (float)1.77204 * (float)cb
               - (float)0.000008 * (float)cr + (float)0.5);

        if (val > max_value) {
            val = max_value;
        } else if (val < 0) {
            val = 0;
        }
        image->comps[2].data[i] = val;
    }
    image->color_space = OPJ_CLRSPC_SRGB;

}/* color_esycc_to_rgb() */
