/*
* 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: jas_image.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
*/
/******************************************************************************\
* 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_alloc2(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) {
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 = inttobits(*d, cmpt->prec_, cmpt->sgnd_);
for (k = cmpt->cps_; k > 0; --k) {
c = (v >> (8 * (cmpt->cps_ - 1))) & 0xff;
if (jas_stream_putc(cmpt->stream_,
(unsigned char) c) == EOF) {
return -1;
}
v <<= 8;
}
}
}
return 0;
}
/******************************************************************************\
* File format operations.
\******************************************************************************/
void jas_image_clearfmts()
{
int i;
jas_image_fmtinfo_t *fmtinfo;
for (i = 0; i < jas_image_numfmts; ++i) {
fmtinfo = &jas_image_fmtinfos[i];
if (fmtinfo->name) {
jas_free(fmtinfo->name);
fmtinfo->name = 0;
}
if (fmtinfo->ext) {
jas_free(fmtinfo->ext);
fmtinfo->ext = 0;
}
if (fmtinfo->desc) {
jas_free(fmtinfo->desc);
fmtinfo->desc = 0;
}
}
jas_image_numfmts = 0;
}
int jas_image_addfmt(int id, char *name, char *ext, char *desc,
jas_image_fmtops_t *ops)
{
jas_image_fmtinfo_t *fmtinfo;
assert(id >= 0 && name && ext && ops);
if (jas_image_numfmts >= JAS_IMAGE_MAXFMTS) {
return -1;
}
fmtinfo = &jas_image_fmtinfos[jas_image_numfmts];
fmtinfo->id = id;
if (!(fmtinfo->name = jas_strdup(name))) {
return -1;
}
if (!(fmtinfo->ext = jas_strdup(ext))) {
jas_free(fmtinfo->name);
return -1;
}
if (!(fmtinfo->desc = jas_strdup(desc))) {
jas_free(fmtinfo->name);
jas_free(fmtinfo->ext);
return -1;
}
fmtinfo->ops = *ops;
++jas_image_numfmts;
return 0;
}
int jas_image_strtofmt(char *name)
{
jas_image_fmtinfo_t *fmtinfo;
if (!(fmtinfo = jas_image_lookupfmtbyname(name))) {
return -1;
}
return fmtinfo->id;
}
char *jas_image_fmttostr(int fmt)
{
jas_image_fmtinfo_t *fmtinfo;
if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) {
return 0;
}
return fmtinfo->name;
}
int jas_image_getfmt(jas_stream_t *in)
{
jas_image_fmtinfo_t *fmtinfo;
int found;
int i;
/* Check for data in each of the supported formats. */
found = 0;
for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i,
++fmtinfo) {
if (fmtinfo->ops.validate) {
/* Is the input data valid for this format? */
if (!(*fmtinfo->ops.validate)(in)) {
found = 1;
break;
}
}
}
return found ? fmtinfo->id : (-1);
}
int jas_image_fmtfromname(char *name)
{
int i;
char *ext;
jas_image_fmtinfo_t *fmtinfo;
/* Get the file name extension. */
if (!(ext = strrchr(name, '.'))) {
return -1;
}
++ext;
/* Try to find a format that uses this extension. */
for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i,
++fmtinfo) {
/* Do we have a match? */
if (!strcmp(ext, fmtinfo->ext)) {
return fmtinfo->id;
}
}
return -1;
}
/******************************************************************************\
* Miscellaneous operations.
\******************************************************************************/
uint_fast32_t jas_image_rawsize(jas_image_t *image)
{
uint_fast32_t rawsize;
int cmptno;
jas_image_cmpt_t *cmpt;
rawsize = 0;
for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) {
cmpt = image->cmpts_[cmptno];
rawsize += (cmpt->width_ * cmpt->height_ * cmpt->prec_ +
7) / 8;
}
return rawsize;
}
void jas_image_delcmpt(jas_image_t *image, int cmptno)
{
if (cmptno >= image->numcmpts_) {
return;
}
jas_image_cmpt_destroy(image->cmpts_[cmptno]);
if (cmptno < image->numcmpts_) {
memmove(&image->cmpts_[cmptno], &image->cmpts_[cmptno + 1],
(image->numcmpts_ - 1 - cmptno) * sizeof(jas_image_cmpt_t *));
}
--image->numcmpts_;
jas_image_setbbox(image);
}
int jas_image_addcmpt(jas_image_t *image, int cmptno,
jas_image_cmptparm_t *cmptparm)
{
jas_image_cmpt_t *newcmpt;
if (cmptno < 0)
cmptno = image->numcmpts_;
assert(cmptno >= 0 && cmptno <= image->numcmpts_);
if (image->numcmpts_ >= image->maxcmpts_) {
if (jas_image_growcmpts(image, image->maxcmpts_ + 128)) {
return -1;
}
}
if (!(newcmpt = jas_image_cmpt_create(cmptparm->tlx,
cmptparm->tly, cmptparm->hstep, cmptparm->vstep,
cmptparm->width, cmptparm->height, cmptparm->prec,
cmptparm->sgnd, 1))) {
return -1;
}
if (cmptno < image->numcmpts_) {
memmove(&image->cmpts_[cmptno + 1], &image->cmpts_[cmptno],
(image->numcmpts_ - cmptno) * sizeof(jas_image_cmpt_t *));
}
image->cmpts_[cmptno] = newcmpt;
++image->numcmpts_;
jas_image_setbbox(image);
return 0;
}
jas_image_fmtinfo_t *jas_image_lookupfmtbyid(int id)
{
int i;
jas_image_fmtinfo_t *fmtinfo;
for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, ++fmtinfo) {
if (fmtinfo->id == id) {
return fmtinfo;
}
}
return 0;
}
jas_image_fmtinfo_t *jas_image_lookupfmtbyname(const char *name)
{
int i;
jas_image_fmtinfo_t *fmtinfo;
for (i = 0, fmtinfo = jas_image_fmtinfos; i < jas_image_numfmts; ++i, ++fmtinfo) {
if (!strcmp(fmtinfo->name, name)) {
return fmtinfo;
}
}
return 0;
}
static uint_fast32_t inttobits(jas_seqent_t v, int prec, bool sgnd)
{
uint_fast32_t ret;
ret = ((sgnd && v < 0) ? ((1 << prec) + v) : v) & JAS_ONES(prec);
return ret;
}
static jas_seqent_t bitstoint(uint_fast32_t v, int prec, bool sgnd)
{
jas_seqent_t ret;
v &= JAS_ONES(prec);
ret = (sgnd && (v & (1 << (prec - 1)))) ? (v - (1 << prec)) : v;
return ret;
}
static void jas_image_setbbox(jas_image_t *image)
{
jas_image_cmpt_t *cmpt;
int cmptno;
int_fast32_t x;
int_fast32_t y;
if (image->numcmpts_ > 0) {
/* Determine the bounding box for all of the components on the
reference grid (i.e., the image area) */
cmpt = image->cmpts_[0];
image->tlx_ = cmpt->tlx_;
image->tly_ = cmpt->tly_;
image->brx_ = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1) + 1;
image->bry_ = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1) + 1;
for (cmptno = 1; cmptno < image->numcmpts_; ++cmptno) {
cmpt = image->cmpts_[cmptno];
if (image->tlx_ > cmpt->tlx_) {
image->tlx_ = cmpt->tlx_;
}
if (image->tly_ > cmpt->tly_) {
image->tly_ = cmpt->tly_;
}
x = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1) + 1;
if (image->brx_ < x) {
image->brx_ = x;
}
y = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1) + 1;
if (image->bry_ < y) {
image->bry_ = y;
}
}
} else {
image->tlx_ = 0;
image->tly_ = 0;
image->brx_ = 0;
image->bry_ = 0;
}
}
static int jas_image_growcmpts(jas_image_t *image, int maxcmpts)
{
jas_image_cmpt_t **newcmpts;
int cmptno;
newcmpts = jas_realloc2(image->cmpts_, maxcmpts, sizeof(jas_image_cmpt_t *));
if (!newcmpts) {
return -1;
}
image->cmpts_ = newcmpts;
image->maxcmpts_ = maxcmpts;
for (cmptno = image->numcmpts_; cmptno < image->maxcmpts_; ++cmptno) {
image->cmpts_[cmptno] = 0;
}
return 0;
}
int jas_image_copycmpt(jas_image_t *dstimage, int dstcmptno, jas_image_t *srcimage,
int srccmptno)
{
jas_image_cmpt_t *newcmpt;
if (dstimage->numcmpts_ >= dstimage->maxcmpts_) {
if (jas_image_growcmpts(dstimage, dstimage->maxcmpts_ + 128)) {
return -1;
}
}
if (!(newcmpt = jas_image_cmpt_copy(srcimage->cmpts_[srccmptno]))) {
return -1;
}
if (dstcmptno < dstimage->numcmpts_) {
memmove(&dstimage->cmpts_[dstcmptno + 1], &dstimage->cmpts_[dstcmptno],
(dstimage->numcmpts_ - dstcmptno) * sizeof(jas_image_cmpt_t *));
}
dstimage->cmpts_[dstcmptno] = newcmpt;
++dstimage->numcmpts_;
jas_image_setbbox(dstimage);
return 0;
}
void jas_image_dump(jas_image_t *image, FILE *out)
{
long buf[1024];
int cmptno;
int n;
int i;
int width;
int height;
jas_image_cmpt_t *cmpt;
for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) {
cmpt = image->cmpts_[cmptno];
fprintf(out, "prec=%d, sgnd=%d, cmpttype=%d\n", cmpt->prec_,
cmpt->sgnd_, (int)cmpt->type_);
width = jas_image_cmptwidth(image, cmptno);
height = jas_image_cmptheight(image, cmptno);
n = JAS_MIN(16, width);
if (jas_image_readcmpt2(image, cmptno, 0, 0, n, 1, buf)) {
abort();
}
for (i = 0; i < n; ++i) {
fprintf(out, " f(%d,%d)=%ld", i, 0, buf[i]);
}
fprintf(out, "\n");
if (jas_image_readcmpt2(image, cmptno, width - n, height - 1, n, 1, buf)) {
abort();
}
for (i = 0; i < n; ++i) {
fprintf(out, " f(%d,%d)=%ld", width - n + i, height - 1, buf[i]);
}
fprintf(out, "\n");
}
}
int jas_image_depalettize(jas_image_t *image, int cmptno, int numlutents,
int_fast32_t *lutents, int dtype, int newcmptno)
{
jas_image_cmptparm_t cmptparms;
int_fast32_t v;
int i;
int j;
jas_image_cmpt_t *cmpt;
cmpt = image->cmpts_[cmptno];
cmptparms.tlx = cmpt->tlx_;
cmptparms.tly = cmpt->tly_;
cmptparms.hstep = cmpt->hstep_;
cmptparms.vstep = cmpt->vstep_;
cmptparms.width = cmpt->width_;
cmptparms.height = cmpt->height_;
cmptparms.prec = JAS_IMAGE_CDT_GETPREC(dtype);
cmptparms.sgnd = JAS_IMAGE_CDT_GETSGND(dtype);
if (jas_image_addcmpt(image, newcmptno, &cmptparms)) {
return -1;
}
if (newcmptno <= cmptno) {
++cmptno;
cmpt = image->cmpts_[cmptno];
}
for (j = 0; j < cmpt->height_; ++j) {
for (i = 0; i < cmpt->width_; ++i) {
v = jas_image_readcmptsample(image, cmptno, i, j);
if (v < 0) {
v = 0;
} else if (v >= numlutents) {
v = numlutents - 1;
}
jas_image_writecmptsample(image, newcmptno, i, j,
lutents[v]);
}
}
return 0;
}
int jas_image_readcmptsample(jas_image_t *image, int cmptno, int x, int y)
{
jas_image_cmpt_t *cmpt;
uint_fast32_t v;
int k;
int c;
cmpt = image->cmpts_[cmptno];
if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_,
SEEK_SET) < 0) {
return -1;
}
v = 0;
for (k = cmpt->cps_; k > 0; --k) {
if ((c = jas_stream_getc(cmpt->stream_)) == EOF) {
return -1;
}
v = (v << 8) | (c & 0xff);
}
return bitstoint(v, cmpt->prec_, cmpt->sgnd_);
}
void jas_image_writecmptsample(jas_image_t *image, int cmptno, int x, int y,
int_fast32_t v)
{
jas_image_cmpt_t *cmpt;
uint_fast32_t t;
int k;
int c;
cmpt = image->cmpts_[cmptno];
if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_,
SEEK_SET) < 0) {
return;
}
t = inttobits(v, cmpt->prec_, cmpt->sgnd_);
for (k = cmpt->cps_; k > 0; --k) {
c = (t >> (8 * (cmpt->cps_ - 1))) & 0xff;
if (jas_stream_putc(cmpt->stream_, (unsigned char) c) == EOF) {
return;
}
t <<= 8;
}
}
int jas_image_getcmptbytype(jas_image_t *image, int ctype)
{
int cmptno;
for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) {
if (image->cmpts_[cmptno]->type_ == ctype) {
return cmptno;
}
}
return -1;
}
/***********************************************/
/***********************************************/
/***********************************************/
/***********************************************/
int jas_image_readcmpt2(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,
long *buf)
{
jas_image_cmpt_t *cmpt;
jas_image_coord_t i;
jas_image_coord_t j;
long v;
long *bufptr;
if (cmptno < 0 || cmptno >= image->numcmpts_)
goto error;
cmpt = image->cmpts_[cmptno];
if (x < 0 || x >= cmpt->width_ || y < 0 || y >= cmpt->height_ ||
width < 0 || height < 0 || x + width > cmpt->width_ ||
y + height > cmpt->height_)
goto error;
bufptr = buf;
for (i = 0; i < height; ++i) {
if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * (y + i) + x)
* cmpt->cps_, SEEK_SET) < 0)
goto error;
for (j = 0; j < width; ++j) {
if (getint(cmpt->stream_, cmpt->sgnd_, cmpt->prec_, &v))
goto error;
*bufptr++ = v;
}
}
return 0;
error:
return -1;
}
int jas_image_writecmpt2(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,
long *buf)
{
jas_image_cmpt_t *cmpt;
jas_image_coord_t i;
jas_image_coord_t j;
long v;
long *bufptr;
if (cmptno < 0 || cmptno >= image->numcmpts_)
goto error;
cmpt = image->cmpts_[cmptno];
if (x < 0 || x >= cmpt->width_ || y < 0 || y >= cmpt->height_ ||
width < 0 || height < 0 || x + width > cmpt->width_ ||
y + height > cmpt->height_)
goto error;
bufptr = buf;
for (i = 0; i < height; ++i) {
if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * (y + i) + x)
* cmpt->cps_, SEEK_SET) < 0)
goto error;
for (j = 0; j < width; ++j) {
v = *bufptr++;
if (putint(cmpt->stream_, cmpt->sgnd_, cmpt->prec_, v))
goto error;
}
}
return 0;
error:
return -1;
}
int jas_image_sampcmpt(jas_image_t *image, int cmptno, int newcmptno,
jas_image_coord_t ho, jas_image_coord_t vo, jas_image_coord_t hs,
jas_image_coord_t vs, int sgnd, int prec)
{
jas_image_cmpt_t *oldcmpt;
jas_image_cmpt_t *newcmpt;
int width;
int height;
jas_image_coord_t tlx;
jas_image_coord_t tly;
jas_image_coord_t brx;
jas_image_coord_t bry;
int i;
int j;
jas_image_cmptparm_t cmptparm;
jas_image_coord_t ax;
jas_image_coord_t ay;
jas_image_coord_t bx;
jas_image_coord_t by;
jas_image_coord_t d0;
jas_image_coord_t d1;
jas_image_coord_t d2;
jas_image_coord_t d3;
jas_image_coord_t oldx;
jas_image_coord_t oldy;
jas_image_coord_t x;
jas_image_coord_t y;
long v;
jas_image_coord_t cmptbrx;
jas_image_coord_t cmptbry;
assert(cmptno >= 0 && cmptno < image->numcmpts_);
oldcmpt = image->cmpts_[cmptno];
assert(oldcmpt->tlx_ == 0 && oldcmpt->tly_ == 0);
jas_image_calcbbox2(image, &tlx, &tly, &brx, &bry);
width = FLOORDIV(brx - ho + hs, hs);
height = FLOORDIV(bry - vo + vs, vs);
cmptparm.tlx = ho;
cmptparm.tly = vo;
cmptparm.hstep = hs;
cmptparm.vstep = vs;
cmptparm.width = width;
cmptparm.height = height;
cmptparm.prec = prec;
cmptparm.sgnd = sgnd;
if (jas_image_addcmpt(image, newcmptno, &cmptparm))
goto error;
cmptbrx = oldcmpt->tlx_ + (oldcmpt->width_ - 1) * oldcmpt->hstep_;
cmptbry = oldcmpt->tly_ + (oldcmpt->height_ - 1) * oldcmpt->vstep_;
newcmpt = image->cmpts_[newcmptno];
jas_stream_rewind(newcmpt->stream_);
for (i = 0; i < height; ++i) {
y = newcmpt->tly_ + newcmpt->vstep_ * i;
for (j = 0; j < width; ++j) {
x = newcmpt->tlx_ + newcmpt->hstep_ * j;
ax = downtomult(x - oldcmpt->tlx_, oldcmpt->hstep_) + oldcmpt->tlx_;
ay = downtomult(y - oldcmpt->tly_, oldcmpt->vstep_) + oldcmpt->tly_;
bx = uptomult(x - oldcmpt->tlx_, oldcmpt->hstep_) + oldcmpt->tlx_;
if (bx > cmptbrx)
bx = cmptbrx;
by = uptomult(y - oldcmpt->tly_, oldcmpt->vstep_) + oldcmpt->tly_;
if (by > cmptbry)
by = cmptbry;
d0 = (ax - x) * (ax - x) + (ay - y) * (ay - y);
d1 = (bx - x) * (bx - x) + (ay - y) * (ay - y);
d2 = (bx - x) * (bx - x) + (by - y) * (by - y);
d3 = (ax - x) * (ax - x) + (by - y) * (by - y);
if (d0 <= d1 && d0 <= d2 && d0 <= d3) {
oldx = (ax - oldcmpt->tlx_) / oldcmpt->hstep_;
oldy = (ay - oldcmpt->tly_) / oldcmpt->vstep_;
} else if (d1 <= d0 && d1 <= d2 && d1 <= d3) {
oldx = (bx - oldcmpt->tlx_) / oldcmpt->hstep_;
oldy = (ay - oldcmpt->tly_) / oldcmpt->vstep_;
} else if (d2 <= d0 && d2 <= d1 && d1 <= d3) {
oldx = (bx - oldcmpt->tlx_) / oldcmpt->hstep_;
oldy = (by - oldcmpt->tly_) / oldcmpt->vstep_;
} else {
oldx = (ax - oldcmpt->tlx_) / oldcmpt->hstep_;
oldy = (by - oldcmpt->tly_) / oldcmpt->vstep_;
}
assert(oldx >= 0 && oldx < oldcmpt->width_ &&
oldy >= 0 && oldy < oldcmpt->height_);
if (jas_stream_seek(oldcmpt->stream_, oldcmpt->cps_ *
(oldy * oldcmpt->width_ + oldx), SEEK_SET) < 0)
goto error;
if (getint(oldcmpt->stream_, oldcmpt->sgnd_,
oldcmpt->prec_, &v))
goto error;
if (newcmpt->prec_ != oldcmpt->prec_ ||
newcmpt->sgnd_ != oldcmpt->sgnd_) {
v = convert(v, oldcmpt->sgnd_, oldcmpt->prec_,
newcmpt->sgnd_, newcmpt->prec_);
}
if (putint(newcmpt->stream_, newcmpt->sgnd_,
newcmpt->prec_, v))
goto error;
}
}
return 0;
error:
return -1;
}
int jas_image_ishomosamp(jas_image_t *image)
{
jas_image_coord_t hstep;
jas_image_coord_t vstep;
int result;
int i;
hstep = jas_image_cmpthstep(image, 0);
vstep = jas_image_cmptvstep(image, 0);
result = 1;
for (i = 0; i < image->numcmpts_; ++i) {
if (jas_image_cmpthstep(image, i) != hstep ||
jas_image_cmptvstep(image, i) != vstep) {
result = 0;
break;
}
}
return result;
}
/* Note: This function defines a bounding box differently. */
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)
{
jas_image_cmpt_t *cmpt;
jas_image_coord_t tmptlx;
jas_image_coord_t tmptly;
jas_image_coord_t tmpbrx;
jas_image_coord_t tmpbry;
jas_image_coord_t t;
int i;
if (image->numcmpts_ > 0) {
cmpt = image->cmpts_[0];
tmptlx = cmpt->tlx_;
tmptly = cmpt->tly_;
tmpbrx = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1);
tmpbry = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1);
for (i = 0; i < image->numcmpts_; ++i) {
cmpt = image->cmpts_[i];
if (cmpt->tlx_ < tmptlx)
tmptlx = cmpt->tlx_;
if (cmpt->tly_ < tmptly)
tmptly = cmpt->tly_;
t = cmpt->tlx_ + cmpt->hstep_ * (cmpt->width_ - 1);
if (t > tmpbrx)
tmpbrx = t;
t = cmpt->tly_ + cmpt->vstep_ * (cmpt->height_ - 1);
if (t > tmpbry)
tmpbry = t;
}
} else {
tmptlx = 0;
tmptly = 0;
tmpbrx = -1;
tmpbry = -1;
}
*tlx = tmptlx;
*tly = tmptly;
*brx = tmpbrx;
*bry = tmpbry;
}
static int getint(jas_stream_t *in, int sgnd, int prec, long *val)
{
long v;
int n;
int c;
n = (prec + 7) / 8;
v = 0;
while (--n >= 0) {
if ((c = jas_stream_getc(in)) == EOF)
return -1;
v = (v << 8) | c;
}
v &= ((1 << prec) - 1);
if (sgnd) {
/* XXX - Do something here. */
abort();
} else {
*val = v;
}
return 0;
}
static int putint(jas_stream_t *out, int sgnd, int prec, long val)
{
int n;
int c;
if (sgnd) {
/* XXX - Do something here. */
abort();
}
val &= (1 << prec) - 1;
n = (prec + 7) / 8;
while (--n >= 0) {
c = (val >> (n * 8)) & 0xff;
if (jas_stream_putc(out, c) != c)
return -1;
}
return 0;
}
static long convert(long val, int oldsgnd, int oldprec, int newsgnd,
int newprec)
{
if (newsgnd != oldsgnd) {
}
if (newprec != oldprec) {
if (newprec > oldprec) {
val <<= newprec - oldprec;
} else if (oldprec > newprec) {
val >>= oldprec - newprec;
}
}
return val;
}
static long downtomult(long x, long y)
{
assert(x >= 0);
return (x / y) * y;
}
static long uptomult(long x, long y)
{
assert(x >= 0);
return ((x + y - 1) / y) * y;
}
jas_image_t *jas_image_chclrspc(jas_image_t *image, jas_cmprof_t *outprof,
int intent)
{
jas_image_t *inimage;
int minhstep;
int minvstep;
int i;
int j;
int k;
int n;
int hstep;
int vstep;
int numinauxchans;
int numoutauxchans;
int numinclrchans;
int numoutclrchans;
int prec;
jas_image_t *outimage;
int cmpttype;
int numoutchans;
jas_cmprof_t *inprof;
jas_cmprof_t *tmpprof;
jas_image_cmptparm_t cmptparm;
int width;
int height;
jas_cmxform_t *xform;
jas_cmpixmap_t inpixmap;
jas_cmpixmap_t outpixmap;
jas_cmcmptfmt_t *incmptfmts;
jas_cmcmptfmt_t *outcmptfmts;
#if 0
jas_eprintf("IMAGE\n");
jas_image_dump(image, stderr);
#endif
if (!(inimage = jas_image_copy(image)))
goto error;
image = 0;
if (!jas_image_ishomosamp(inimage)) {
minhstep = jas_image_cmpthstep(inimage, 0);
minvstep = jas_image_cmptvstep(inimage, 0);
for (i = 1; i < jas_image_numcmpts(inimage); ++i) {
hstep = jas_image_cmpthstep(inimage, i);
vstep = jas_image_cmptvstep(inimage, i);
if (hstep < minhstep)
minhstep = hstep;
if (vstep < minvstep)
minvstep = vstep;
}
n = jas_image_numcmpts(inimage);
for (i = 0; i < n; ++i) {
cmpttype = jas_image_cmpttype(inimage, i);
if (jas_image_sampcmpt(inimage, i, i + 1, 0, 0, minhstep, minvstep, jas_image_cmptsgnd(inimage, i), jas_image_cmptprec(inimage, i)))
goto error;
jas_image_setcmpttype(inimage, i + 1, cmpttype);
jas_image_delcmpt(inimage, i);
}
}
width = jas_image_cmptwidth(inimage, 0);
height = jas_image_cmptheight(inimage, 0);
hstep = jas_image_cmpthstep(inimage, 0);
vstep = jas_image_cmptvstep(inimage, 0);
inprof = jas_image_cmprof(inimage);
assert(inprof);
numinclrchans = jas_clrspc_numchans(jas_cmprof_clrspc(inprof));
numinauxchans = jas_image_numcmpts(inimage) - numinclrchans;
numoutclrchans = jas_clrspc_numchans(jas_cmprof_clrspc(outprof));
numoutauxchans = 0;
numoutchans = numoutclrchans + numoutauxchans;
prec = 8;
if (!(outimage = jas_image_create0()))
goto error;
/* Create a component for each of the colorants. */
for (i = 0; i < numoutclrchans; ++i) {
cmptparm.tlx = 0;
cmptparm.tly = 0;
cmptparm.hstep = hstep;
cmptparm.vstep = vstep;
cmptparm.width = width;
cmptparm.height = height;
cmptparm.prec = prec;
cmptparm.sgnd = 0;
if (jas_image_addcmpt(outimage, -1, &cmptparm))
goto error;
jas_image_setcmpttype(outimage, i, JAS_IMAGE_CT_COLOR(i));
}
#if 0
/* Copy the auxiliary components without modification. */
for (i = 0; i < jas_image_numcmpts(inimage); ++i) {
if (!ISCOLOR(jas_image_cmpttype(inimage, i))) {
jas_image_copycmpt(outimage, -1, inimage, i);
/* XXX - need to specify laydown of component on ref. grid */
}
}
#endif
if (!(tmpprof = jas_cmprof_copy(outprof)))
goto error;
assert(!jas_image_cmprof(outimage));
jas_image_setcmprof(outimage, tmpprof);
tmpprof = 0;
jas_image_setclrspc(outimage, jas_cmprof_clrspc(outprof));
if (!(xform = jas_cmxform_create(inprof, outprof, 0, JAS_CMXFORM_OP_FWD, intent, 0)))
goto error;
inpixmap.numcmpts = numinclrchans;
incmptfmts = malloc(numinclrchans * sizeof(jas_cmcmptfmt_t));
assert(incmptfmts);
inpixmap.cmptfmts = incmptfmts;
for (i = 0; i < numinclrchans; ++i) {
j = jas_image_getcmptbytype(inimage, JAS_IMAGE_CT_COLOR(i));
assert(j >= 0);
if (!(incmptfmts[i].buf = malloc(width * sizeof(long))))
goto error;
incmptfmts[i].prec = jas_image_cmptprec(inimage, j);
incmptfmts[i].sgnd = jas_image_cmptsgnd(inimage, j);
incmptfmts[i].width = width;
incmptfmts[i].height = 1;
}
outpixmap.numcmpts = numoutclrchans;
outcmptfmts = malloc(numoutclrchans * sizeof(jas_cmcmptfmt_t));
assert(outcmptfmts);
outpixmap.cmptfmts = outcmptfmts;
for (i = 0; i < numoutclrchans; ++i) {
j = jas_image_getcmptbytype(outimage, JAS_IMAGE_CT_COLOR(i));
assert(j >= 0);
if (!(outcmptfmts[i].buf = malloc(width * sizeof(long))))
goto error;
outcmptfmts[i].prec = jas_image_cmptprec(outimage, j);
outcmptfmts[i].sgnd = jas_image_cmptsgnd(outimage, j);
outcmptfmts[i].width = width;
outcmptfmts[i].height = 1;
}
for (i = 0; i < height; ++i) {
for (j = 0; j < numinclrchans; ++j) {
k = jas_image_getcmptbytype(inimage, JAS_IMAGE_CT_COLOR(j));
if (jas_image_readcmpt2(inimage, k, 0, i, width, 1, incmptfmts[j].buf))
goto error;
}
jas_cmxform_apply(xform, &inpixmap, &outpixmap);
for (j = 0; j < numoutclrchans; ++j) {
k = jas_image_getcmptbytype(outimage, JAS_IMAGE_CT_COLOR(j));
if (jas_image_writecmpt2(outimage, k, 0, i, width, 1, outcmptfmts[j].buf))
goto error;
}
}
for (i = 0; i < numoutclrchans; ++i)
jas_free(outcmptfmts[i].buf);
jas_free(outcmptfmts);
for (i = 0; i < numinclrchans; ++i)
jas_free(incmptfmts[i].buf);
jas_free(incmptfmts);
jas_cmxform_destroy(xform);
jas_image_destroy(inimage);
#if 0
jas_eprintf("INIMAGE\n");
jas_image_dump(inimage, stderr);
jas_eprintf("OUTIMAGE\n");
jas_image_dump(outimage, stderr);
#endif
return outimage;
error:
return 0;
}