jas_cm.c

自主研发的一种电子文档格式。也算是多年技术的积累吧。 系统主要包含虚拟驱动和浏览器

/*
 * 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__
 */

/*
 * Color Management
 *
 * $Id$
 */

#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;
		jas_iccprof_destroy(iccprof);
		iccprof = 0;
		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;

	prof = 0;
	fwdpxformseq = 0;
	revpxformseq = 0;

	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:
	if (fwdpxformseq) {
		jas_cmpxformseq_destroy(fwdpxformseq);
	}
	if (revpxformseq) {
		jas_cmpxformseq_destroy(revpxformseq);
	}
	if (prof) {
		jas_cmprof_destroy(prof);
	}

	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))