jas_image.c

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/*
 * Copyright (c) 1999-2000 Image Power, Inc. and the University of
 *   British Columbia.
 * Copyright (c) 2001-2003 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__
 */

/*
 * Image Library
 *
 * $Id$
 */

/******************************************************************************\
* Includes.
\******************************************************************************/

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

#include "jasper/jas_math.h"
#include "jasper/jas_image.h"
#include "jasper/jas_malloc.h"
#include "jasper/jas_string.h"

/******************************************************************************\
* Types.
\******************************************************************************/

#define	FLOORDIV(x, y) ((x) / (y))

/******************************************************************************\
* Local prototypes.
\******************************************************************************/

static jas_image_cmpt_t *jas_image_cmpt_create0(void);
static void jas_image_cmpt_destroy(jas_image_cmpt_t *cmpt);
static jas_image_cmpt_t *jas_image_cmpt_create(uint_fast32_t tlx, uint_fast32_t tly,
  uint_fast32_t hstep, uint_fast32_t vstep, uint_fast32_t width, uint_fast32_t
  height, uint_fast16_t depth, bool sgnd, uint_fast32_t inmem);
static void jas_image_setbbox(jas_image_t *image);
static jas_image_cmpt_t *jas_image_cmpt_copy(jas_image_cmpt_t *cmpt);
static int jas_image_growcmpts(jas_image_t *image, int maxcmpts);
static uint_fast32_t inttobits(jas_seqent_t v, int prec, bool sgnd);
static jas_seqent_t bitstoint(uint_fast32_t v, int prec, bool sgnd);
static int putint(jas_stream_t *out, int sgnd, int prec, long val);
static int getint(jas_stream_t *in, int sgnd, int prec, long *val);
static void jas_image_calcbbox2(jas_image_t *image, jas_image_coord_t *tlx,
  jas_image_coord_t *tly, jas_image_coord_t *brx, jas_image_coord_t *bry);
static long uptomult(long x, long y);
static long downtomult(long x, long y);
static long convert(long val, int oldsgnd, int oldprec, int newsgnd,
  int newprec);
static void jas_image_calcbbox2(jas_image_t *image, jas_image_coord_t *tlx,
  jas_image_coord_t *tly, jas_image_coord_t *brx, jas_image_coord_t *bry);

/******************************************************************************\
* Global data.
\******************************************************************************/

static int jas_image_numfmts = 0;
static jas_image_fmtinfo_t jas_image_fmtinfos[JAS_IMAGE_MAXFMTS];

/******************************************************************************\
* Create and destroy operations.
\******************************************************************************/

jas_image_t *jas_image_create(int numcmpts, jas_image_cmptparm_t *cmptparms,
  int clrspc)
{
	jas_image_t *image;
	uint_fast32_t rawsize;
	uint_fast32_t inmem;
	int cmptno;
	jas_image_cmptparm_t *cmptparm;

	if (!(image = jas_image_create0())) {
		return 0;
	}

	image->clrspc_ = clrspc;
	image->maxcmpts_ = numcmpts;
	image->inmem_ = true;

	/* Allocate memory for the per-component information. */
	if (!(image->cmpts_ = jas_malloc(image->maxcmpts_ *
	  sizeof(jas_image_cmpt_t *)))) {
		jas_image_destroy(image);
		return 0;
	}
	/* Initialize in case of failure. */
	for (cmptno = 0; cmptno < image->maxcmpts_; ++cmptno) {
		image->cmpts_[cmptno] = 0;
	}

	/* Compute the approximate raw size of the image. */
	rawsize = 0;
	for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno,
	  ++cmptparm) {
		rawsize += cmptparm->width * cmptparm->height *
		  (cmptparm->prec + 7) / 8;
	}
	/* Decide whether to buffer the image data in memory, based on the
	  raw size of the image. */
	inmem = (rawsize < JAS_IMAGE_INMEMTHRESH);

	/* Create the individual image components. */
	for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno,
	  ++cmptparm) {
		if (!(image->cmpts_[cmptno] = jas_image_cmpt_create(cmptparm->tlx,
		  cmptparm->tly, cmptparm->hstep, cmptparm->vstep,
		  cmptparm->width, cmptparm->height, cmptparm->prec,
		  cmptparm->sgnd, inmem))) {
			jas_image_destroy(image);
			return 0;
		}
		++image->numcmpts_;
	}

	/* Determine the bounding box for all of the components on the
	  reference grid (i.e., the image area) */
	jas_image_setbbox(image);

	return image;
}

jas_image_t *jas_image_create0()
{
	jas_image_t *image;

	if (!(image = jas_malloc(sizeof(jas_image_t)))) {
		return 0;
	}

	image->tlx_ = 0;
	image->tly_ = 0;
	image->brx_ = 0;
	image->bry_ = 0;
	image->clrspc_ = JAS_CLRSPC_UNKNOWN;
	image->numcmpts_ = 0;
	image->maxcmpts_ = 0;
	image->cmpts_ = 0;
	image->inmem_ = true;
	image->cmprof_ = 0;

	return image;
}

jas_image_t *jas_image_copy(jas_image_t *image)
{
	jas_image_t *newimage;
	int cmptno;

	newimage = jas_image_create0();
	if (jas_image_growcmpts(newimage, image->numcmpts_)) {
		goto error;
	}
	for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) {
		if (!(newimage->cmpts_[cmptno] = jas_image_cmpt_copy(image->cmpts_[cmptno]))) {
			goto error;
		}
		++newimage->numcmpts_;
	}

	jas_image_setbbox(newimage);

	if (image->cmprof_) {
		if (!(newimage->cmprof_ = jas_cmprof_copy(image->cmprof_)))
			goto error;
	}

	return newimage;
error:
	if (newimage) {
		jas_image_destroy(newimage);
	}
	return 0;
}

static jas_image_cmpt_t *jas_image_cmpt_create0()
{
	jas_image_cmpt_t *cmpt;
	if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) {
		return 0;
	}
	memset(cmpt, 0, sizeof(jas_image_cmpt_t));
	cmpt->type_ = JAS_IMAGE_CT_UNKNOWN;
	return cmpt;
}

static jas_image_cmpt_t *jas_image_cmpt_copy(jas_image_cmpt_t *cmpt)
{
	jas_image_cmpt_t *newcmpt;

	if (!(newcmpt = jas_image_cmpt_create0())) {
		return 0;
	}
	newcmpt->tlx_ = cmpt->tlx_;
	newcmpt->tly_ = cmpt->tly_;
	newcmpt->hstep_ = cmpt->hstep_;
	newcmpt->vstep_ = cmpt->vstep_;
	newcmpt->width_ = cmpt->width_;
	newcmpt->height_ = cmpt->height_;
	newcmpt->prec_ = cmpt->prec_;
	newcmpt->sgnd_ = cmpt->sgnd_;
	newcmpt->cps_ = cmpt->cps_;
	newcmpt->type_ = cmpt->type_;
	if (!(newcmpt->stream_ = jas_stream_memopen(0, 0))) {
		return 0;
	}
	if (jas_stream_seek(cmpt->stream_, 0, SEEK_SET)) {
		return 0;
	}
	if (jas_stream_copy(newcmpt->stream_, cmpt->stream_, -1)) {
		return 0;
	}
	if (jas_stream_seek(newcmpt->stream_, 0, SEEK_SET)) {
		return 0;
	}
	return newcmpt;
}

void jas_image_destroy(jas_image_t *image)
{
	int i;

	if (image->cmpts_) {
		for (i = 0; i < image->numcmpts_; ++i) {
			jas_image_cmpt_destroy(image->cmpts_[i]);
			image->cmpts_[i] = 0;
		}
		jas_free(image->cmpts_);
	}
	if (image->cmprof_)
		jas_cmprof_destroy(image->cmprof_);
	jas_free(image);
}

static jas_image_cmpt_t *jas_image_cmpt_create(uint_fast32_t tlx, uint_fast32_t tly,
  uint_fast32_t hstep, uint_fast32_t vstep, uint_fast32_t width, uint_fast32_t
  height, uint_fast16_t depth, bool sgnd, uint_fast32_t inmem)
{
	jas_image_cmpt_t *cmpt;
	long size;

	if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) {
		return 0;
	}

	cmpt->type_ = JAS_IMAGE_CT_UNKNOWN;
	cmpt->tlx_ = tlx;
	cmpt->tly_ = tly;
	cmpt->hstep_ = hstep;
	cmpt->vstep_ = vstep;
	cmpt->width_ = width;
	cmpt->height_ = height;
	cmpt->prec_ = depth;
	cmpt->sgnd_ = sgnd;
	cmpt->stream_ = 0;
	cmpt->cps_ = (depth + 7) / 8;

	size = cmpt->width_ * cmpt->height_ * cmpt->cps_;
	cmpt->stream_ = (inmem) ? jas_stream_memopen(0, size) : jas_stream_tmpfile();
	if (!cmpt->stream_) {
		jas_image_cmpt_destroy(cmpt);
		return 0;
	}

	/* Zero the component data.  This isn't necessary, but it is
	convenient for debugging purposes. */
	if (jas_stream_seek(cmpt->stream_, size - 1, SEEK_SET) < 0 ||
	  jas_stream_putc(cmpt->stream_, 0) == EOF ||
	  jas_stream_seek(cmpt->stream_, 0, SEEK_SET) < 0) {
		jas_image_cmpt_destroy(cmpt);
		return 0;
	}

	return cmpt;
}

static void jas_image_cmpt_destroy(jas_image_cmpt_t *cmpt)
{
	if (cmpt->stream_) {
		jas_stream_close(cmpt->stream_);
	}
	jas_free(cmpt);
}

/******************************************************************************\
* Load and save operations.
\******************************************************************************/

jas_image_t *jas_image_decode(jas_stream_t *in, int fmt, char *optstr)
{
	jas_image_fmtinfo_t *fmtinfo;
	jas_image_t *image;

	image = 0;

	/* If possible, try to determine the format of the input data. */
	if (fmt < 0) {
		if ((fmt = jas_image_getfmt(in)) < 0)
			goto error;
	}

	/* Is it possible to decode an image represented in this format? */
	if (!(fmtinfo = jas_image_lookupfmtbyid(fmt)))
		goto error;
	if (!fmtinfo->ops.decode)
		goto error;

	/* Decode the image. */
	if (!(image = (*fmtinfo->ops.decode)(in, optstr)))
		goto error;

	/* Create a color profile if needed. */
	if (!jas_clrspc_isunknown(image->clrspc_) &&
	  !jas_clrspc_isgeneric(image->clrspc_) && !image->cmprof_) {
		if (!(image->cmprof_ =
		  jas_cmprof_createfromclrspc(jas_image_clrspc(image))))
			goto error;
	}

	return image;
error:
	if (image)
		jas_image_destroy(image);
	return 0;
}

int jas_image_encode(jas_image_t *image, jas_stream_t *out, int fmt, char *optstr)
{
	jas_image_fmtinfo_t *fmtinfo;
	if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) {
		return -1;
	}
	return (fmtinfo->ops.encode) ? (*fmtinfo->ops.encode)(image, out,
	  optstr) : (-1);
}

/******************************************************************************\
* Component read and write operations.
\******************************************************************************/

int jas_image_readcmpt(jas_image_t *image, int cmptno, jas_image_coord_t x,
  jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
  jas_matrix_t *data)
{
	jas_image_cmpt_t *cmpt;
	jas_image_coord_t i;
	jas_image_coord_t j;
	int k;
	jas_seqent_t v;
	int c;
	jas_seqent_t *dr;
	jas_seqent_t *d;
	int drs;

	if (cmptno < 0 || cmptno >= image->numcmpts_) {
		return -1;
	}

	cmpt = image->cmpts_[cmptno];
	if (x >= cmpt->width_ || y >= cmpt->height_ ||
	  x + width > cmpt->width_ ||
	  y + height > cmpt->height_) {
		return -1;
	}

	if (jas_matrix_numrows(data) != height || jas_matrix_numcols(data) != width) {
		if (jas_matrix_resize(data, height, width)) {
			return -1;
		}
	}

	dr = jas_matrix_getref(data, 0, 0);
	drs = jas_matrix_rowstep(data);
	for (i = 0; i < height; ++i, dr += drs) {
		d = dr;
		if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * (y + i) + x)
		  * cmpt->cps_, SEEK_SET) < 0) {
			return -1;
		}
		for (j = width; j > 0; --j, ++d) {
			v = 0;
			for (k = cmpt->cps_; k > 0; --k) {
				if ((c = jas_stream_getc(cmpt->stream_)) == EOF) {
					return -1;
				}
				v = (v << 8) | (c & 0xff);
			}
			*d = bitstoint(v, cmpt->prec_, cmpt->sgnd_);
		}
	}

	return 0;
}

int jas_image_writecmpt(jas_image_t *image, int cmptno, jas_image_coord_t x, jas_image_coord_t y, jas_image_coord_t width,
  jas_image_coord_t height, jas_matrix_t *data)
{
	jas_image_cmpt_t *cmpt;
	jas_image_coord_t i;
	jas_image_coord_t j;
	jas_seqent_t *d;
	jas_seqent_t *dr;
	int drs;
	jas_seqent_t v;
	int k;
	int c;

	if (cmptno < 0 || cmptno >= image->numcmpts_) {
		return -1;
	}

	cmpt = image->cmpts_[cmptno];
	if (x >= cmpt->width_ || y >= cmpt->height_ ||
	  x + width > cmpt->width_ ||
	  y + height > cmpt->height_) {
		return -1;
	}

	if (jas_matrix_numrows(data) != height || jas_matrix_numcols(data) != width) {