--- /dev/null
+/*
+ * Copyright (c) 2002-2003 Michael David Adams.
+ * All rights reserved.
+ */
+
+/* __START_OF_JASPER_LICENSE__
+ *
+ * JasPer License Version 2.0
+ *
+ * Copyright (c) 1999-2000 Image Power, Inc.
+ * Copyright (c) 1999-2000 The University of British Columbia
+ * Copyright (c) 2001-2003 Michael David Adams
+ *
+ * All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person (the
+ * "User") obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, and/or sell copies of the Software, and to permit
+ * persons to whom the Software is furnished to do so, subject to the
+ * following conditions:
+ *
+ * 1. The above copyright notices and this permission notice (which
+ * includes the disclaimer below) shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * 2. The name of a copyright holder shall not be used to endorse or
+ * promote products derived from the Software without specific prior
+ * written permission.
+ *
+ * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
+ * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
+ * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
+ * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
+ * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
+ * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
+ * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
+ * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
+ * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
+ * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
+ * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
+ * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
+ * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
+ * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
+ * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
+ * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
+ * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
+ * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
+ * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
+ * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
+ * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
+ * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
+ *
+ * __END_OF_JASPER_LICENSE__
+ */
+
+/*
+ * Color Management
+ *
+ * $Id: jas_cm.c,v 1.1 2005/05/22 18:32:58 malaterre Exp $
+ */
+
+#include <jasper/jas_config.h>
+#include <math.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <jasper/jas_cm.h>
+#include <jasper/jas_icc.h>
+#include <jasper/jas_init.h>
+#include <jasper/jas_stream.h>
+#include <jasper/jas_malloc.h>
+#include <jasper/jas_math.h>
+
+static jas_cmprof_t *jas_cmprof_create(void);
+static void jas_cmshapmatlut_cleanup(jas_cmshapmatlut_t *);
+static jas_cmreal_t jas_cmshapmatlut_lookup(jas_cmshapmatlut_t *lut, jas_cmreal_t x);
+
+static void jas_cmpxform_destroy(jas_cmpxform_t *pxform);
+static jas_cmpxform_t *jas_cmpxform_copy(jas_cmpxform_t *pxform);
+
+static void jas_cmshapmat_destroy(jas_cmpxform_t *pxform);
+static int jas_cmshapmat_apply(jas_cmpxform_t *pxform, jas_cmreal_t *in,
+ jas_cmreal_t *out, int cnt);
+
+static int jas_cmputint(long **bufptr, int sgnd, int prec, long val);
+static int jas_cmgetint(long **bufptr, int sgnd, int prec, long *val);
+static int jas_cmpxformseq_append(jas_cmpxformseq_t *pxformseq,
+ jas_cmpxformseq_t *othpxformseq);
+static int jas_cmpxformseq_appendcnvt(jas_cmpxformseq_t *pxformseq,
+ int, int);
+static int jas_cmpxformseq_resize(jas_cmpxformseq_t *pxformseq, int n);
+
+static int mono(jas_iccprof_t *prof, int op, jas_cmpxformseq_t **pxformseq);
+static int triclr(jas_iccprof_t *prof, int op, jas_cmpxformseq_t **retpxformseq);
+
+static void jas_cmpxformseq_destroy(jas_cmpxformseq_t *pxformseq);
+static int jas_cmpxformseq_delete(jas_cmpxformseq_t *pxformseq, int i);
+static jas_cmpxformseq_t *jas_cmpxformseq_create(void);
+static jas_cmpxformseq_t *jas_cmpxformseq_copy(jas_cmpxformseq_t *pxformseq);
+static int jas_cmshapmat_invmat(jas_cmreal_t out[3][4], jas_cmreal_t in[3][4]);
+static int jas_cmpxformseq_insertpxform(jas_cmpxformseq_t *pxformseq,
+ int i, jas_cmpxform_t *pxform);
+
+#define SEQFWD(intent) (intent)
+#define SEQREV(intent) (4 + (intent))
+#define SEQSIM(intent) (8 + (intent))
+#define SEQGAM 12
+
+#define fwdpxformseq(prof, intent) \
+ (((prof)->pxformseqs[SEQFWD(intent)]) ? \
+ ((prof)->pxformseqs[SEQFWD(intent)]) : \
+ ((prof)->pxformseqs[SEQFWD(0)]))
+
+#define revpxformseq(prof, intent) \
+ (((prof)->pxformseqs[SEQREV(intent)]) ? \
+ ((prof)->pxformseqs[SEQREV(intent)]) : \
+ ((prof)->pxformseqs[SEQREV(0)]))
+
+#define simpxformseq(prof, intent) \
+ (((prof)->pxformseqs[SEQSIM(intent)]) ? \
+ ((prof)->pxformseqs[SEQSIM(intent)]) : \
+ ((prof)->pxformseqs[SEQSIM(0)]))
+
+#define gampxformseq(prof) ((prof)->pxformseqs[SEQGAM])
+
+static int icctoclrspc(int iccclrspc, int refflag);
+static jas_cmpxform_t *jas_cmpxform_create0(void);
+static jas_cmpxform_t *jas_cmpxform_createshapmat(void);
+static void jas_cmshapmatlut_init(jas_cmshapmatlut_t *lut);
+static int jas_cmshapmatlut_set(jas_cmshapmatlut_t *lut, jas_icccurv_t *curv);
+
+static jas_cmpxformops_t shapmat_ops = {jas_cmshapmat_destroy, jas_cmshapmat_apply, 0};
+static jas_cmprof_t *jas_cmprof_createsycc(void);
+
+/******************************************************************************\
+* Color profile class.
+\******************************************************************************/
+
+jas_cmprof_t *jas_cmprof_createfromclrspc(int clrspc)
+{
+ jas_iccprof_t *iccprof;
+ jas_cmprof_t *prof;
+
+ iccprof = 0;
+ prof = 0;
+ switch (clrspc) {
+ case JAS_CLRSPC_SYCBCR:
+ if (!(prof = jas_cmprof_createsycc()))
+ goto error;
+ break;
+ default:
+ if (!(iccprof = jas_iccprof_createfromclrspc(clrspc)))
+ goto error;
+ if (!(prof = jas_cmprof_createfromiccprof(iccprof)))
+ goto error;
+#if 0
+ jas_iccprof_destroy(iccprof);
+#else
+ prof->iccprof = iccprof;
+#endif
+ if (!jas_clrspc_isgeneric(clrspc))
+ prof->clrspc = clrspc;
+ break;
+ }
+ return prof;
+error:
+ if (iccprof)
+ jas_iccprof_destroy(iccprof);
+ return 0;
+}
+
+static jas_cmprof_t *jas_cmprof_createsycc()
+{
+ jas_cmprof_t *prof;
+ jas_cmpxform_t *fwdpxform;
+ jas_cmpxform_t *revpxform;
+ jas_cmshapmat_t *fwdshapmat;
+ jas_cmshapmat_t *revshapmat;
+ int i;
+ int j;
+
+ if (!(prof = jas_cmprof_createfromclrspc(JAS_CLRSPC_SRGB)))
+ goto error;
+ prof->clrspc = JAS_CLRSPC_SYCBCR;
+ assert(prof->numchans == 3 && prof->numrefchans == 3);
+ assert(prof->refclrspc == JAS_CLRSPC_CIEXYZ);
+ if (!(fwdpxform = jas_cmpxform_createshapmat()))
+ goto error;
+ fwdpxform->numinchans = 3;
+ fwdpxform->numoutchans = 3;
+ fwdshapmat = &fwdpxform->data.shapmat;
+ fwdshapmat->mono = 0;
+ fwdshapmat->order = 0;
+ fwdshapmat->useluts = 0;
+ fwdshapmat->usemat = 1;
+ fwdshapmat->mat[0][0] = 1.0;
+ fwdshapmat->mat[0][1] = 0.0;
+ fwdshapmat->mat[0][2] = 1.402;
+ fwdshapmat->mat[1][0] = 1.0;
+ fwdshapmat->mat[1][1] = -0.34413;
+ fwdshapmat->mat[1][2] = -0.71414;
+ fwdshapmat->mat[2][0] = 1.0;
+ fwdshapmat->mat[2][1] = 1.772;
+ fwdshapmat->mat[2][2] = 0.0;
+ fwdshapmat->mat[0][3] = -0.5 * (1.402);
+ fwdshapmat->mat[1][3] = -0.5 * (-0.34413 - 0.71414);
+ fwdshapmat->mat[2][3] = -0.5 * (1.772);
+ if (!(revpxform = jas_cmpxform_createshapmat()))
+ goto error;
+ revpxform->numinchans = 3;
+ revpxform->numoutchans = 3;
+ revshapmat = &revpxform->data.shapmat;
+ revshapmat->mono = 0;
+ revshapmat->order = 1;
+ revshapmat->useluts = 0;
+ revshapmat->usemat = 1;
+ jas_cmshapmat_invmat(revshapmat->mat, fwdshapmat->mat);
+
+ for (i = 0; i < JAS_CMXFORM_NUMINTENTS; ++i) {
+ j = SEQFWD(i);
+ if (prof->pxformseqs[j]) {
+ if (jas_cmpxformseq_insertpxform(prof->pxformseqs[j], 0,
+ fwdpxform))
+ goto error;
+ }
+ j = SEQREV(i);
+ if (prof->pxformseqs[j]) {
+ if (jas_cmpxformseq_insertpxform(prof->pxformseqs[j],
+ -1, revpxform))
+ goto error;
+ }
+ }
+
+ jas_cmpxform_destroy(fwdpxform);
+ jas_cmpxform_destroy(revpxform);
+ return prof;
+error:
+ return 0;
+}
+
+jas_cmprof_t *jas_cmprof_createfromiccprof(jas_iccprof_t *iccprof)
+{
+ jas_cmprof_t *prof;
+ jas_icchdr_t icchdr;
+ jas_cmpxformseq_t *fwdpxformseq;
+ jas_cmpxformseq_t *revpxformseq;
+
+ if (!(prof = jas_cmprof_create()))
+ goto error;
+ jas_iccprof_gethdr(iccprof, &icchdr);
+ if (!(prof->iccprof = jas_iccprof_copy(iccprof)))
+ goto error;
+ prof->clrspc = icctoclrspc(icchdr.colorspc, 0);
+ prof->refclrspc = icctoclrspc(icchdr.refcolorspc, 1);
+ prof->numchans = jas_clrspc_numchans(prof->clrspc);
+ prof->numrefchans = jas_clrspc_numchans(prof->refclrspc);
+
+ if (prof->numchans == 1) {
+ if (mono(prof->iccprof, 0, &fwdpxformseq))
+ goto error;
+ if (mono(prof->iccprof, 1, &revpxformseq))
+ goto error;
+ } else if (prof->numchans == 3) {
+ if (triclr(prof->iccprof, 0, &fwdpxformseq))
+ goto error;
+ if (triclr(prof->iccprof, 1, &revpxformseq))
+ goto error;
+ }
+ prof->pxformseqs[SEQFWD(0)] = fwdpxformseq;
+ prof->pxformseqs[SEQREV(0)] = revpxformseq;
+
+#if 0
+ if (prof->numchans > 1) {
+ lut(prof->iccprof, 0, PER, &pxformseq);
+ pxformseqs_set(prof, SEQFWD(PER), pxformseq);
+ lut(prof->iccprof, 1, PER, &pxformseq);
+ pxformseqs_set(prof, SEQREV(PER), pxformseq);
+ lut(prof->iccprof, 0, CLR, &pxformseq);
+ pxformseqs_set(prof, SEQREV(CLR), pxformseq);
+ lut(prof->iccprof, 1, CLR, &pxformseq);
+ pxformseqs_set(prof, SEQREV(CLR), pxformseq);
+ lut(prof->iccprof, 0, SAT, &pxformseq);
+ pxformseqs_set(prof, SEQREV(SAT), pxformseq);
+ lut(prof->iccprof, 1, SAT, &pxformseq);
+ pxformseqs_set(prof, SEQREV(SAT), pxformseq);
+ }
+#endif
+
+ return prof;
+error:
+ return 0;
+}
+
+static jas_cmprof_t *jas_cmprof_create()
+{
+ int i;
+ jas_cmprof_t *prof;
+ if (!(prof = jas_malloc(sizeof(jas_cmprof_t))))
+ return 0;
+ memset(prof, 0, sizeof(jas_cmprof_t));
+ prof->iccprof = 0;
+ for (i = 0; i < JAS_CMPROF_NUMPXFORMSEQS; ++i)
+ prof->pxformseqs[i] = 0;
+ return prof;
+}
+
+void jas_cmprof_destroy(jas_cmprof_t *prof)
+{
+ int i;
+ for (i = 0; i < JAS_CMPROF_NUMPXFORMSEQS; ++i) {
+ if (prof->pxformseqs[i]) {
+ jas_cmpxformseq_destroy(prof->pxformseqs[i]);
+ prof->pxformseqs[i] = 0;
+ }
+ }
+ if (prof->iccprof)
+ jas_iccprof_destroy(prof->iccprof);
+ jas_free(prof);
+}
+
+jas_cmprof_t *jas_cmprof_copy(jas_cmprof_t *prof)
+{
+ jas_cmprof_t *newprof;
+ int i;
+
+ if (!(newprof = jas_cmprof_create()))
+ goto error;
+ newprof->clrspc = prof->clrspc;
+ newprof->numchans = prof->numchans;
+ newprof->refclrspc = prof->refclrspc;
+ newprof->numrefchans = prof->numrefchans;
+ newprof->iccprof = jas_iccprof_copy(prof->iccprof);
+ for (i = 0; i < JAS_CMPROF_NUMPXFORMSEQS; ++i) {
+ if (prof->pxformseqs[i]) {
+ if (!(newprof->pxformseqs[i] = jas_cmpxformseq_copy(prof->pxformseqs[i])))
+ goto error;
+ }
+ }
+ return newprof;
+error:
+ return 0;
+}
+
+/******************************************************************************\
+* Transform class.
+\******************************************************************************/
+
+jas_cmxform_t *jas_cmxform_create(jas_cmprof_t *inprof, jas_cmprof_t *outprof,
+ jas_cmprof_t *prfprof, int op, int intent, int optimize)
+{
+ jas_cmxform_t *xform;
+ jas_cmpxformseq_t *inpxformseq;
+ jas_cmpxformseq_t *outpxformseq;
+ jas_cmpxformseq_t *altoutpxformseq;
+ jas_cmpxformseq_t *prfpxformseq;
+ int prfintent;
+
+ /* Avoid compiler warnings about unused parameters. */
+ optimize = 0;
+
+ prfintent = intent;
+
+ if (!(xform = jas_malloc(sizeof(jas_cmxform_t))))
+ goto error;
+ if (!(xform->pxformseq = jas_cmpxformseq_create()))
+ goto error;
+
+ switch (op) {
+ case JAS_CMXFORM_OP_FWD:
+ inpxformseq = fwdpxformseq(inprof, intent);
+ outpxformseq = revpxformseq(outprof, intent);
+ if (!inpxformseq || !outpxformseq)
+ goto error;
+ if (jas_cmpxformseq_append(xform->pxformseq, inpxformseq) ||
+ jas_cmpxformseq_appendcnvt(xform->pxformseq,
+ inprof->refclrspc, outprof->refclrspc) ||
+ jas_cmpxformseq_append(xform->pxformseq, outpxformseq))
+ goto error;
+ xform->numinchans = jas_clrspc_numchans(inprof->clrspc);
+ xform->numoutchans = jas_clrspc_numchans(outprof->clrspc);
+ break;
+ case JAS_CMXFORM_OP_REV:
+ outpxformseq = fwdpxformseq(outprof, intent);
+ inpxformseq = revpxformseq(inprof, intent);
+ if (!outpxformseq || !inpxformseq)
+ goto error;
+ if (jas_cmpxformseq_append(xform->pxformseq, outpxformseq) ||
+ jas_cmpxformseq_appendcnvt(xform->pxformseq,
+ outprof->refclrspc, inprof->refclrspc) ||
+ jas_cmpxformseq_append(xform->pxformseq, inpxformseq))
+ goto error;
+ xform->numinchans = jas_clrspc_numchans(outprof->clrspc);
+ xform->numoutchans = jas_clrspc_numchans(inprof->clrspc);
+ break;
+ case JAS_CMXFORM_OP_PROOF:
+ assert(prfprof);
+ inpxformseq = fwdpxformseq(inprof, intent);
+ prfpxformseq = fwdpxformseq(prfprof, prfintent);
+ if (!inpxformseq || !prfpxformseq)
+ goto error;
+ outpxformseq = simpxformseq(outprof, intent);
+ altoutpxformseq = 0;
+ if (!outpxformseq) {
+ outpxformseq = revpxformseq(outprof, intent);
+ altoutpxformseq = fwdpxformseq(outprof, intent);
+ if (!outpxformseq || !altoutpxformseq)
+ goto error;
+ }
+ if (jas_cmpxformseq_append(xform->pxformseq, inpxformseq) ||
+ jas_cmpxformseq_appendcnvt(xform->pxformseq,
+ inprof->refclrspc, outprof->refclrspc))
+ goto error;
+ if (altoutpxformseq) {
+ if (jas_cmpxformseq_append(xform->pxformseq, outpxformseq) ||
+ jas_cmpxformseq_append(xform->pxformseq, altoutpxformseq))
+ goto error;
+ } else {
+ if (jas_cmpxformseq_append(xform->pxformseq, outpxformseq))
+ goto error;
+ }
+ if (jas_cmpxformseq_appendcnvt(xform->pxformseq,
+ outprof->refclrspc, inprof->refclrspc) ||
+ jas_cmpxformseq_append(xform->pxformseq, prfpxformseq))
+ goto error;
+ xform->numinchans = jas_clrspc_numchans(inprof->clrspc);
+ xform->numoutchans = jas_clrspc_numchans(prfprof->clrspc);
+ break;
+ case JAS_CMXFORM_OP_GAMUT:
+ inpxformseq = fwdpxformseq(inprof, intent);
+ outpxformseq = gampxformseq(outprof);
+ if (!inpxformseq || !outpxformseq)
+ goto error;
+ if (jas_cmpxformseq_append(xform->pxformseq, inpxformseq) ||
+ jas_cmpxformseq_appendcnvt(xform->pxformseq,
+ inprof->refclrspc, outprof->refclrspc) ||
+ jas_cmpxformseq_append(xform->pxformseq, outpxformseq))
+ goto error;
+ xform->numinchans = jas_clrspc_numchans(inprof->clrspc);
+ xform->numoutchans = 1;
+ break;
+ }
+ return xform;
+error:
+ return 0;
+}
+
+#define APPLYBUFSIZ 2048
+int jas_cmxform_apply(jas_cmxform_t *xform, jas_cmpixmap_t *in, jas_cmpixmap_t *out)
+{
+ jas_cmcmptfmt_t *fmt;
+ jas_cmreal_t buf[2][APPLYBUFSIZ];
+ jas_cmpxformseq_t *pxformseq;
+ int i;
+ int j;
+ int width;
+ int height;
+ int total;
+ int n;
+ jas_cmreal_t *inbuf;
+ jas_cmreal_t *outbuf;
+ jas_cmpxform_t *pxform;
+ long *dataptr;
+ int maxchans;
+ int bufmax;
+ int m;
+ int bias;
+ jas_cmreal_t scale;
+ long v;
+ jas_cmreal_t *bufptr;
+
+ if (xform->numinchans > in->numcmpts || xform->numoutchans > out->numcmpts)
+ goto error;
+
+ fmt = &in->cmptfmts[0];
+ width = fmt->width;
+ height = fmt->height;
+ for (i = 1; i < xform->numinchans; ++i) {
+ fmt = &in->cmptfmts[i];
+ if (fmt->width != width || fmt->height != height) {
+ goto error;
+ }
+ }
+ for (i = 0; i < xform->numoutchans; ++i) {
+ fmt = &out->cmptfmts[i];
+ if (fmt->width != width || fmt->height != height) {
+ goto error;
+ }
+ }
+
+ maxchans = 0;
+ pxformseq = xform->pxformseq;
+ for (i = 0; i < pxformseq->numpxforms; ++i) {
+ pxform = pxformseq->pxforms[i];
+ if (pxform->numinchans > maxchans) {
+ maxchans = pxform->numinchans;
+ }
+ if (pxform->numoutchans > maxchans) {
+ maxchans = pxform->numoutchans;
+ }
+ }
+ bufmax = APPLYBUFSIZ / maxchans;
+ assert(bufmax > 0);
+
+ total = width * height;
+ n = 0;
+ while (n < total) {
+
+ inbuf = &buf[0][0];
+ m = JAS_MIN(total - n, bufmax);
+
+ for (i = 0; i < xform->numinchans; ++i) {
+ fmt = &in->cmptfmts[i];
+ scale = (double)((1 << fmt->prec) - 1);
+ bias = fmt->sgnd ? (1 << (fmt->prec - 1)) : 0;
+ dataptr = &fmt->buf[n];
+ bufptr = &inbuf[i];
+ for (j = 0; j < m; ++j) {
+ if (jas_cmgetint(&dataptr, fmt->sgnd, fmt->prec, &v))
+ goto error;
+ *bufptr = (v - bias) / scale;
+ bufptr += xform->numinchans;
+ }
+ }
+
+ inbuf = &buf[0][0];
+ outbuf = inbuf;
+ for (i = 0; i < pxformseq->numpxforms; ++i) {
+ pxform = pxformseq->pxforms[i];
+ if (pxform->numoutchans > pxform->numinchans) {
+ outbuf = (inbuf == &buf[0][0]) ? &buf[1][0] : &buf[0][0];
+ } else {
+ outbuf = inbuf;
+ }
+ if ((*pxform->ops->apply)(pxform, inbuf, outbuf, m))
+ goto error;
+ inbuf = outbuf;
+ }
+
+ for (i = 0; i < xform->numoutchans; ++i) {
+ fmt = &out->cmptfmts[i];
+ scale = (double)((1 << fmt->prec) - 1);
+ bias = fmt->sgnd ? (1 << (fmt->prec - 1)) : 0;
+ bufptr = &outbuf[i];
+ dataptr = &fmt->buf[n];
+ for (j = 0; j < m; ++j) {
+ v = (*bufptr) * scale + bias;
+ bufptr += xform->numoutchans;
+ if (jas_cmputint(&dataptr, fmt->sgnd, fmt->prec, v))
+ goto error;
+ }
+ }
+
+ n += m;
+ }
+
+ return 0;
+error:
+ return -1;
+}
+
+void jas_cmxform_destroy(jas_cmxform_t *xform)
+{
+ if (xform->pxformseq)
+ jas_cmpxformseq_destroy(xform->pxformseq);
+ jas_free(xform);
+}
+
+/******************************************************************************\
+* Primitive transform sequence class.
+\******************************************************************************/
+
+static jas_cmpxformseq_t *jas_cmpxformseq_create()
+{
+ jas_cmpxformseq_t *pxformseq;
+ pxformseq = 0;
+ if (!(pxformseq = jas_malloc(sizeof(jas_cmpxformseq_t))))
+ goto error;
+ pxformseq->pxforms = 0;
+ pxformseq->numpxforms = 0;
+ pxformseq->maxpxforms = 0;
+ if (jas_cmpxformseq_resize(pxformseq, 16))
+ goto error;
+ return pxformseq;
+error:
+ if (pxformseq)
+ jas_cmpxformseq_destroy(pxformseq);
+ return 0;
+}
+
+static jas_cmpxformseq_t *jas_cmpxformseq_copy(jas_cmpxformseq_t *pxformseq)
+{
+ jas_cmpxformseq_t *newpxformseq;
+
+ if (!(newpxformseq = jas_cmpxformseq_create()))
+ goto error;
+ if (jas_cmpxformseq_append(newpxformseq, pxformseq))
+ goto error;
+ return newpxformseq;
+error:
+ return 0;
+}
+
+static void jas_cmpxformseq_destroy(jas_cmpxformseq_t *pxformseq)
+{
+ while (pxformseq->numpxforms > 0)
+ jas_cmpxformseq_delete(pxformseq, pxformseq->numpxforms - 1);
+ if (pxformseq->pxforms)
+ jas_free(pxformseq->pxforms);
+ jas_free(pxformseq);
+}
+
+static int jas_cmpxformseq_delete(jas_cmpxformseq_t *pxformseq, int i)
+{
+ assert(i >= 0 && i < pxformseq->numpxforms);
+ if (i != pxformseq->numpxforms - 1)
+ abort();
+ jas_cmpxform_destroy(pxformseq->pxforms[i]);
+ pxformseq->pxforms[i] = 0;
+ --pxformseq->numpxforms;
+ return 0;
+}
+
+static int jas_cmpxformseq_appendcnvt(jas_cmpxformseq_t *pxformseq,
+ int dstclrspc, int srcclrspc)
+{
+ if (dstclrspc == srcclrspc)
+ return 0;
+ abort();
+ /* Avoid compiler warnings about unused parameters. */
+ pxformseq = 0;
+ return -1;
+}
+
+static int jas_cmpxformseq_insertpxform(jas_cmpxformseq_t *pxformseq,
+ int i, jas_cmpxform_t *pxform)
+{
+ jas_cmpxform_t *tmppxform;
+ int n;
+ if (i < 0)
+ i = pxformseq->numpxforms;
+ assert(i >= 0 && i <= pxformseq->numpxforms);
+ if (pxformseq->numpxforms >= pxformseq->maxpxforms) {
+ if (jas_cmpxformseq_resize(pxformseq, pxformseq->numpxforms +
+ 16))
+ goto error;
+ }
+ assert(pxformseq->numpxforms < pxformseq->maxpxforms);
+ if (!(tmppxform = jas_cmpxform_copy(pxform)))
+ goto error;
+ n = pxformseq->numpxforms - i;
+ if (n > 0) {
+ memmove(&pxformseq->pxforms[i + 1], &pxformseq->pxforms[i],
+ n * sizeof(jas_cmpxform_t *));
+ }
+ pxformseq->pxforms[i] = tmppxform;
+ ++pxformseq->numpxforms;
+ return 0;
+error:
+ return -1;
+}
+
+static int jas_cmpxformseq_append(jas_cmpxformseq_t *pxformseq,
+ jas_cmpxformseq_t *othpxformseq)
+{
+ int n;
+ int i;
+ jas_cmpxform_t *pxform;
+ jas_cmpxform_t *othpxform;
+ n = pxformseq->numpxforms + othpxformseq->numpxforms;
+ if (n > pxformseq->maxpxforms) {
+ if (jas_cmpxformseq_resize(pxformseq, n))
+ goto error;
+ }
+ for (i = 0; i < othpxformseq->numpxforms; ++i) {
+ othpxform = othpxformseq->pxforms[i];
+ if (!(pxform = jas_cmpxform_copy(othpxform)))
+ goto error;
+ pxformseq->pxforms[pxformseq->numpxforms] = pxform;
+ ++pxformseq->numpxforms;
+ }
+ return 0;
+error:
+ return -1;
+}
+
+static int jas_cmpxformseq_resize(jas_cmpxformseq_t *pxformseq, int n)
+{
+ jas_cmpxform_t **p;
+ assert(n >= pxformseq->numpxforms);
+ p = (!pxformseq->pxforms) ? jas_malloc(n * sizeof(jas_cmpxform_t *)) :
+ jas_realloc(pxformseq->pxforms, n * sizeof(jas_cmpxform_t *));
+ if (!p) {
+ return -1;
+ }
+ pxformseq->pxforms = p;
+ pxformseq->maxpxforms = n;
+ return 0;
+}
+
+/******************************************************************************\
+* Primitive transform class.
+\******************************************************************************/
+
+static jas_cmpxform_t *jas_cmpxform_create0()
+{
+ jas_cmpxform_t *pxform;
+ if (!(pxform = jas_malloc(sizeof(jas_cmpxform_t))))
+ return 0;
+ memset(pxform, 0, sizeof(jas_cmpxform_t));
+ pxform->refcnt = 0;
+ pxform->ops = 0;
+ return pxform;
+}
+
+static void jas_cmpxform_destroy(jas_cmpxform_t *pxform)
+{
+ if (--pxform->refcnt <= 0) {
+ (*pxform->ops->destroy)(pxform);
+ jas_free(pxform);
+ }
+}
+
+static jas_cmpxform_t *jas_cmpxform_copy(jas_cmpxform_t *pxform)
+{
+ ++pxform->refcnt;
+ return pxform;
+}
+
+/******************************************************************************\
+* Shaper matrix class.
+\******************************************************************************/
+
+static jas_cmpxform_t *jas_cmpxform_createshapmat()
+{
+ int i;
+ int j;
+ jas_cmpxform_t *pxform;
+ jas_cmshapmat_t *shapmat;
+ if (!(pxform = jas_cmpxform_create0()))
+ return 0;
+ pxform->ops = &shapmat_ops;
+ shapmat = &pxform->data.shapmat;
+ shapmat->mono = 0;
+ shapmat->order = 0;
+ shapmat->useluts = 0;
+ shapmat->usemat = 0;
+ for (i = 0; i < 3; ++i)
+ jas_cmshapmatlut_init(&shapmat->luts[i]);
+ for (i = 0; i < 3; ++i) {
+ for (j = 0; j < 4; ++j)
+ shapmat->mat[i][j] = 0.0;
+ }
+ ++pxform->refcnt;
+ return pxform;
+}
+
+static void jas_cmshapmat_destroy(jas_cmpxform_t *pxform)
+{
+ jas_cmshapmat_t *shapmat = &pxform->data.shapmat;
+ int i;
+ for (i = 0; i < 3; ++i)
+ jas_cmshapmatlut_cleanup(&shapmat->luts[i]);
+}
+
+static int jas_cmshapmat_apply(jas_cmpxform_t *pxform, jas_cmreal_t *in,
+ jas_cmreal_t *out, int cnt)
+{
+ jas_cmshapmat_t *shapmat = &pxform->data.shapmat;
+ jas_cmreal_t *src;
+ jas_cmreal_t *dst;
+ jas_cmreal_t a0;
+ jas_cmreal_t a1;
+ jas_cmreal_t a2;
+ jas_cmreal_t b0;
+ jas_cmreal_t b1;
+ jas_cmreal_t b2;
+ src = in;
+ dst = out;
+ if (!shapmat->mono) {
+ while (--cnt >= 0) {
+ a0 = *src++;
+ a1 = *src++;
+ a2 = *src++;
+ if (!shapmat->order && shapmat->useluts) {
+ a0 = jas_cmshapmatlut_lookup(&shapmat->luts[0], a0);
+ a1 = jas_cmshapmatlut_lookup(&shapmat->luts[1], a1);
+ a2 = jas_cmshapmatlut_lookup(&shapmat->luts[2], a2);
+ }
+ if (shapmat->usemat) {
+ b0 = shapmat->mat[0][0] * a0
+ + shapmat->mat[0][1] * a1
+ + shapmat->mat[0][2] * a2
+ + shapmat->mat[0][3];
+ b1 = shapmat->mat[1][0] * a0
+ + shapmat->mat[1][1] * a1
+ + shapmat->mat[1][2] * a2
+ + shapmat->mat[1][3];
+ b2 = shapmat->mat[2][0] * a0
+ + shapmat->mat[2][1] * a1
+ + shapmat->mat[2][2] * a2
+ + shapmat->mat[2][3];
+ a0 = b0;
+ a1 = b1;
+ a2 = b2;
+ }
+ if (shapmat->order && shapmat->useluts) {
+ a0 = jas_cmshapmatlut_lookup(&shapmat->luts[0], a0);
+ a1 = jas_cmshapmatlut_lookup(&shapmat->luts[1], a1);
+ a2 = jas_cmshapmatlut_lookup(&shapmat->luts[2], a2);
+ }
+ *dst++ = a0;
+ *dst++ = a1;
+ *dst++ = a2;
+ }
+ } else {
+ if (!shapmat->order) {
+ while (--cnt >= 0) {
+ a0 = *src++;
+ if (shapmat->useluts)
+ a0 = jas_cmshapmatlut_lookup(&shapmat->luts[0], a0);
+ a2 = a0 * shapmat->mat[2][0];
+ a1 = a0 * shapmat->mat[1][0];
+ a0 = a0 * shapmat->mat[0][0];
+ *dst++ = a0;
+ *dst++ = a1;
+ *dst++ = a2;
+ }
+ } else {
+assert(0);
+ while (--cnt >= 0) {
+ a0 = *src++;
+ src++;
+ src++;
+ a0 = a0 * shapmat->mat[0][0];
+ if (shapmat->useluts)
+ a0 = jas_cmshapmatlut_lookup(&shapmat->luts[0], a0);
+ *dst++ = a0;
+ }
+ }
+ }
+
+ return 0;
+}
+
+static void jas_cmshapmatlut_init(jas_cmshapmatlut_t *lut)
+{
+ lut->data = 0;
+ lut->size = 0;
+}
+
+static void jas_cmshapmatlut_cleanup(jas_cmshapmatlut_t *lut)
+{
+ if (lut->data) {
+ jas_free(lut->data);
+ lut->data = 0;
+ }
+ lut->size = 0;
+}
+
+static double gammafn(double x, double gamma)
+{
+ if (x == 0.0)
+ return 0.0;
+ return pow(x, gamma);
+}
+
+static int jas_cmshapmatlut_set(jas_cmshapmatlut_t *lut, jas_icccurv_t *curv)
+{
+ jas_cmreal_t gamma;
+ int i;
+ gamma = 0;
+ jas_cmshapmatlut_cleanup(lut);
+ if (curv->numents == 0) {
+ lut->size = 2;
+ if (!(lut->data = jas_malloc(lut->size * sizeof(jas_cmreal_t))))
+ goto error;
+ lut->data[0] = 0.0;
+ lut->data[1] = 1.0;
+ } else if (curv->numents == 1) {
+ lut->size = 256;
+ if (!(lut->data = jas_malloc(lut->size * sizeof(jas_cmreal_t))))
+ goto error;
+ gamma = curv->ents[0] / 256.0;
+ for (i = 0; i < lut->size; ++i) {
+ lut->data[i] = gammafn(i / (double) (lut->size - 1), gamma);
+ }
+ } else {
+ lut->size = curv->numents;
+ if (!(lut->data = jas_malloc(lut->size * sizeof(jas_cmreal_t))))
+ goto error;
+ for (i = 0; i < lut->size; ++i) {
+ lut->data[i] = curv->ents[i] / 65535.0;
+ }
+ }
+ return 0;
+error:
+ return -1;
+}
+
+static jas_cmreal_t jas_cmshapmatlut_lookup(jas_cmshapmatlut_t *lut, jas_cmreal_t x)
+{
+ jas_cmreal_t t;
+ int lo;
+ int hi;
+ t = x * (lut->size - 1);
+ lo = floor(t);
+ if (lo < 0)
+ return lut->data[0];
+ hi = ceil(t);
+ if (hi >= lut->size)
+ return lut->data[lut->size - 1];
+ return lut->data[lo] + (t - lo) * (lut->data[hi] - lut->data[lo]);
+}
+
+static int jas_cmshapmatlut_invert(jas_cmshapmatlut_t *invlut,
+ jas_cmshapmatlut_t *lut, int n)
+{
+ int i;
+ int j;
+ int k;
+ jas_cmreal_t ax;
+ jas_cmreal_t ay;
+ jas_cmreal_t bx;
+ jas_cmreal_t by;
+ jas_cmreal_t sx;
+ jas_cmreal_t sy;
+ assert(n >= 2);
+ if (invlut->data) {
+ jas_free(invlut->data);
+ invlut->data = 0;
+ }
+ /* The sample values should be nondecreasing. */
+ for (i = 1; i < lut->size; ++i) {
+ if (lut->data[i - 1] > lut->data[i]) {
+ assert(0);
+ return -1;
+ }
+ }
+ if (!(invlut->data = jas_malloc(n * sizeof(jas_cmreal_t))))
+ return -1;
+ invlut->size = n;
+ for (i = 0; i < invlut->size; ++i) {
+ sy = ((double) i) / (invlut->size - 1);
+ sx = 1.0;
+ for (j = 0; j < lut->size; ++j) {
+ ay = lut->data[j];
+ if (sy == ay) {
+ for (k = j + 1; k < lut->size; ++k) {
+ by = lut->data[k];
+ if (by != sy)
+ break;
+#if 0
+assert(0);
+#endif
+ }
+ if (k < lut->size) {
+ --k;
+ ax = ((double) j) / (lut->size - 1);
+ bx = ((double) k) / (lut->size - 1);
+ sx = (ax + bx) / 2.0;
+ }
+ break;
+ }
+ if (j < lut->size - 1) {
+ by = lut->data[j + 1];
+ if (sy > ay && sy < by) {
+ ax = ((double) j) / (lut->size - 1);
+ bx = ((double) j + 1) / (lut->size - 1);
+ sx = ax +
+ (sy - ay) / (by - ay) * (bx - ax);
+ break;
+ }
+ }
+ }
+ invlut->data[i] = sx;
+ }
+#if 0
+for (i=0;i<lut->size;++i)
+ fprintf(stderr, "lut[%d]=%f ", i, lut->data[i]);
+for (i=0;i<invlut->size;++i)
+ fprintf(stderr, "invlut[%d]=%f ", i, invlut->data[i]);
+#endif
+ return 0;
+}
+
+static int jas_cmshapmat_invmat(jas_cmreal_t out[3][4], jas_cmreal_t in[3][4])
+{
+ jas_cmreal_t d;
+ d = in[0][0] * (in[1][1] * in[2][2] - in[1][2] * in[2][1])
+ - in[0][1] * (in[1][0] * in[2][2] - in[1][2] * in[2][0])
+ + in[0][2] * (in[1][0] * in[2][1] - in[1][1] * in[2][0]);
+#if 0
+fprintf(stderr, "delta=%f\n", d);
+#endif
+ if (JAS_ABS(d) < 1e-6)
+ return -1;
+ out[0][0] = (in[1][1] * in[2][2] - in[1][2] * in[2][1]) / d;
+ out[1][0] = -(in[1][0] * in[2][2] - in[1][2] * in[2][0]) / d;
+ out[2][0] = (in[1][0] * in[2][1] - in[1][1] * in[2][0]) / d;
+ out[0][1] = -(in[0][1] * in[2][2] - in[0][2] * in[2][1]) / d;
+ out[1][1] = (in[0][0] * in[2][2] - in[0][2] * in[2][0]) / d;
+ out[2][1] = -(in[0][0] * in[2][1] - in[0][1] * in[2][0]) / d;
+ out[0][2] = (in[0][1] * in[1][2] - in[0][2] * in[1][1]) / d;
+ out[1][2] = -(in[0][0] * in[1][2] - in[1][0] * in[0][2]) / d;
+ out[2][2] = (in[0][0] * in[1][1] - in[0][1] * in[1][0]) / d;
+ out[0][3] = -in[0][3];
+ out[1][3] = -in[1][3];
+ out[2][3] = -in[2][3];
+#if 0
+fprintf(stderr, "[ %f %f %f %f ]\n[ %f %f %f %f ]\n[ %f %f %f %f ]\n",
+in[0][0], in[0][1], in[0][2], in[0][3],
+in[1][0], in[1][1], in[1][2], in[1][3],
+in[2][0], in[2][1], in[2][2], in[2][3]);
+fprintf(stderr, "[ %f %f %f %f ]\n[ %f %f %f %f ]\n[ %f %f %f %f ]\n",
+out[0][0], out[0][1], out[0][2], out[0][3],
+out[1][0], out[1][1], out[1][2], out[1][3],
+out[2][0], out[2][1], out[2][2], out[2][3]);
+#endif
+ return 0;
+}
+
+/******************************************************************************\
+*
+\******************************************************************************/
+
+static int icctoclrspc(int iccclrspc, int refflag)
+{
+ if (refflag) {
+ switch (iccclrspc) {
+ case JAS_ICC_COLORSPC_XYZ:
+ return JAS_CLRSPC_CIEXYZ;
+ case JAS_ICC_COLORSPC_LAB:
+ return JAS_CLRSPC_CIELAB;
+ default:
+ abort();
+ break;
+ }
+ } else {
+ switch (iccclrspc) {
+ case JAS_ICC_COLORSPC_YCBCR:
+ return JAS_CLRSPC_GENYCBCR;
+ case JAS_ICC_COLORSPC_RGB:
+ return JAS_CLRSPC_GENRGB;
+ case JAS_ICC_COLORSPC_GRAY:
+ return JAS_CLRSPC_GENGRAY;
+ default:
+ abort();
+ break;
+ }
+ }
+}
+
+static int mono(jas_iccprof_t *iccprof, int op, jas_cmpxformseq_t **retpxformseq)
+{
+ jas_iccattrval_t *graytrc;
+ jas_cmshapmat_t *shapmat;
+ jas_cmpxform_t *pxform;
+ jas_cmpxformseq_t *pxformseq;
+ jas_cmshapmatlut_t lut;
+
+ jas_cmshapmatlut_init(&lut);
+ if (!(graytrc = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_GRYTRC)) ||
+ graytrc->type != JAS_ICC_TYPE_CURV)
+ goto error;
+ if (!(pxform = jas_cmpxform_createshapmat()))
+ goto error;
+ shapmat = &pxform->data.shapmat;
+ if (!(pxformseq = jas_cmpxformseq_create()))
+ goto error;
+ if (jas_cmpxformseq_insertpxform(pxformseq, -1, pxform))
+ goto error;
+
+ pxform->numinchans = 1;
+ pxform->numoutchans = 3;
+
+ shapmat->mono = 1;
+ shapmat->useluts = 1;
+ shapmat->usemat = 1;
+ if (!op) {
+ shapmat->order = 0;
+ shapmat->mat[0][0] = 0.9642;
+ shapmat->mat[1][0] = 1.0;
+ shapmat->mat[2][0] = 0.8249;
+ if (jas_cmshapmatlut_set(&shapmat->luts[0], &graytrc->data.curv))
+ goto error;
+ } else {
+ shapmat->order = 1;
+ shapmat->mat[0][0] = 1.0 / 0.9642;
+ shapmat->mat[1][0] = 1.0;
+ shapmat->mat[2][0] = 1.0 / 0.8249;
+ jas_cmshapmatlut_init(&lut);
+ if (jas_cmshapmatlut_set(&lut, &graytrc->data.curv))
+ goto error;
+ if (jas_cmshapmatlut_invert(&shapmat->luts[0], &lut, lut.size))
+ goto error;
+ jas_cmshapmatlut_cleanup(&lut);
+ }
+ jas_iccattrval_destroy(graytrc);
+ jas_cmpxform_destroy(pxform);
+ *retpxformseq = pxformseq;
+ return 0;
+error:
+ return -1;
+}
+
+static int triclr(jas_iccprof_t *iccprof, int op, jas_cmpxformseq_t **retpxformseq)
+{
+ int i;
+ jas_iccattrval_t *trcs[3];
+ jas_iccattrval_t *cols[3];
+ jas_cmshapmat_t *shapmat;
+ jas_cmpxform_t *pxform;
+ jas_cmpxformseq_t *pxformseq;
+ jas_cmreal_t mat[3][4];
+ jas_cmshapmatlut_t lut;
+ jas_cmshapmatlut_init(&lut);
+ for (i = 0; i < 3; ++i) {
+ trcs[i] = 0;
+ cols[i] = 0;
+ }
+ if (!(trcs[0] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_REDTRC)) ||
+ !(trcs[1] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_GRNTRC)) ||
+ !(trcs[2] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_BLUTRC)) ||
+ !(cols[0] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_REDMATCOL)) ||
+ !(cols[1] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_GRNMATCOL)) ||
+ !(cols[2] = jas_iccprof_getattr(iccprof, JAS_ICC_TAG_BLUMATCOL)))
+ goto error;
+ for (i = 0; i < 3; ++i) {
+ if (trcs[i]->type != JAS_ICC_TYPE_CURV ||
+ cols[i]->type != JAS_ICC_TYPE_XYZ)
+ goto error;
+ }
+ if (!(pxform = jas_cmpxform_createshapmat()))
+ goto error;
+ pxform->numinchans = 3;
+ pxform->numoutchans = 3;
+ shapmat = &pxform->data.shapmat;
+ if (!(pxformseq = jas_cmpxformseq_create()))
+ goto error;
+ if (jas_cmpxformseq_insertpxform(pxformseq, -1, pxform))
+ goto error;
+ shapmat->mono = 0;
+ shapmat->useluts = 1;
+ shapmat->usemat = 1;
+ if (!op) {
+ shapmat->order = 0;
+ for (i = 0; i < 3; ++i) {
+ shapmat->mat[0][i] = cols[i]->data.xyz.x / 65536.0;
+ shapmat->mat[1][i] = cols[i]->data.xyz.y / 65536.0;
+ shapmat->mat[2][i] = cols[i]->data.xyz.z / 65536.0;
+ }
+ for (i = 0; i < 3; ++i)
+ shapmat->mat[i][3] = 0.0;
+ for (i = 0; i < 3; ++i) {
+ if (jas_cmshapmatlut_set(&shapmat->luts[i], &trcs[i]->data.curv))
+ goto error;
+ }
+ } else {
+ shapmat->order = 1;
+ for (i = 0; i < 3; ++i) {
+ mat[0][i] = cols[i]->data.xyz.x / 65536.0;
+ mat[1][i] = cols[i]->data.xyz.y / 65536.0;
+ mat[2][i] = cols[i]->data.xyz.z / 65536.0;
+ }
+ for (i = 0; i < 3; ++i)
+ mat[i][3] = 0.0;
+ if (jas_cmshapmat_invmat(shapmat->mat, mat))
+ goto error;
+ for (i = 0; i < 3; ++i) {
+ jas_cmshapmatlut_init(&lut);
+ if (jas_cmshapmatlut_set(&lut, &trcs[i]->data.curv))
+ goto error;
+ if (jas_cmshapmatlut_invert(&shapmat->luts[i], &lut, lut.size))
+ goto error;
+ jas_cmshapmatlut_cleanup(&lut);
+ }
+ }
+ for (i = 0; i < 3; ++i) {
+ jas_iccattrval_destroy(trcs[i]);
+ jas_iccattrval_destroy(cols[i]);
+ }
+ jas_cmpxform_destroy(pxform);
+ *retpxformseq = pxformseq;
+ return 0;
+error:
+ return -1;
+}
+
+static int jas_cmgetint(long **bufptr, int sgnd, int prec, long *val)
+{
+ long v;
+ int m;
+ v = **bufptr;
+ if (sgnd) {
+ m = (1 << (prec - 1));
+ if (v < -m || v >= m)
+ return -1;
+ } else {
+ if (v < 0 || v >= (1 << prec))
+ return -1;
+ }
+ ++(*bufptr);
+ *val = v;
+ return 0;
+}
+
+static int jas_cmputint(long **bufptr, int sgnd, int prec, long val)
+{
+ int m;
+ if (sgnd) {
+ m = (1 << (prec - 1));
+ if (val < -m || val >= m)
+ return -1;
+ } else {
+ if (val < 0 || val >= (1 << prec))
+ return -1;
+ }
+ **bufptr = val;
+ ++(*bufptr);
+ return 0;
+}
+
+int jas_clrspc_numchans(int clrspc)
+{
+ switch (jas_clrspc_fam(clrspc)) {
+ case JAS_CLRSPC_FAM_XYZ:
+ case JAS_CLRSPC_FAM_LAB:
+ case JAS_CLRSPC_FAM_RGB:
+ case JAS_CLRSPC_FAM_YCBCR:
+ return 3;
+ break;
+ case JAS_CLRSPC_FAM_GRAY:
+ return 1;
+ break;
+ default:
+ abort();
+ break;
+ }
+}
+
+jas_iccprof_t *jas_iccprof_createfromcmprof(jas_cmprof_t *prof)
+{
+ return jas_iccprof_copy(prof->iccprof);
+}
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff