1444 lines
42 KiB
C
1444 lines
42 KiB
C
/*
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* Copyright (c) 1999-2000 Image Power, Inc. and the University of
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* British Columbia.
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* Copyright (c) 2001-2003 Michael David Adams.
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* All rights reserved.
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*/
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/* __START_OF_JASPER_LICENSE__
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*
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* JasPer License Version 2.0
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*
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* Copyright (c) 2001-2006 Michael David Adams
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* Copyright (c) 1999-2000 Image Power, Inc.
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* Copyright (c) 1999-2000 The University of British Columbia
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*
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person (the
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* "User") obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, and/or sell copies of the Software, and to permit
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* persons to whom the Software is furnished to do so, subject to the
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* following conditions:
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*
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* 1. The above copyright notices and this permission notice (which
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* includes the disclaimer below) shall be included in all copies or
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* substantial portions of the Software.
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*
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* 2. The name of a copyright holder shall not be used to endorse or
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* promote products derived from the Software without specific prior
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* written permission.
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*
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* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
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* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
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* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
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* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
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* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
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* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
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* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
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* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
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* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
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* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
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* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
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* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
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* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
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* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
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* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
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* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
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* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
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* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
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* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
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* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
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* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
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*
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* __END_OF_JASPER_LICENSE__
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*/
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/*
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* Image Library
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*
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* $Id: jas_image.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
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*/
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/******************************************************************************\
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* Includes.
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\******************************************************************************/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <ctype.h>
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#include "jasper/jas_math.h"
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#include "jasper/jas_image.h"
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#include "jasper/jas_malloc.h"
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#include "jasper/jas_string.h"
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/******************************************************************************\
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* Types.
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\******************************************************************************/
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#define FLOORDIV(x, y) ((x) / (y))
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/******************************************************************************\
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* Local prototypes.
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\******************************************************************************/
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static jas_image_cmpt_t *jas_image_cmpt_create0(void);
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static void jas_image_cmpt_destroy(jas_image_cmpt_t *cmpt);
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static jas_image_cmpt_t *jas_image_cmpt_create(uint_fast32_t tlx, uint_fast32_t tly,
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uint_fast32_t hstep, uint_fast32_t vstep, uint_fast32_t width, uint_fast32_t
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height, uint_fast16_t depth, bool sgnd, uint_fast32_t inmem);
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static void jas_image_setbbox(jas_image_t *image);
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static jas_image_cmpt_t *jas_image_cmpt_copy(jas_image_cmpt_t *cmpt);
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static int jas_image_growcmpts(jas_image_t *image, int maxcmpts);
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static uint_fast32_t inttobits(jas_seqent_t v, int prec, bool sgnd);
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static jas_seqent_t bitstoint(uint_fast32_t v, int prec, bool sgnd);
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static int putint(jas_stream_t *out, int sgnd, int prec, long val);
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static int getint(jas_stream_t *in, int sgnd, int prec, long *val);
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static void jas_image_calcbbox2(jas_image_t *image, jas_image_coord_t *tlx,
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jas_image_coord_t *tly, jas_image_coord_t *brx, jas_image_coord_t *bry);
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static long uptomult(long x, long y);
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static long downtomult(long x, long y);
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static long convert(long val, int oldsgnd, int oldprec, int newsgnd,
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int newprec);
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static void jas_image_calcbbox2(jas_image_t *image, jas_image_coord_t *tlx,
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jas_image_coord_t *tly, jas_image_coord_t *brx, jas_image_coord_t *bry);
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/******************************************************************************\
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* Global data.
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\******************************************************************************/
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static int jas_image_numfmts = 0;
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static jas_image_fmtinfo_t jas_image_fmtinfos[JAS_IMAGE_MAXFMTS];
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/******************************************************************************\
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* Create and destroy operations.
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\******************************************************************************/
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jas_image_t *jas_image_create(int numcmpts, jas_image_cmptparm_t *cmptparms,
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int clrspc)
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{
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jas_image_t *image;
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uint_fast32_t rawsize;
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uint_fast32_t inmem;
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int cmptno;
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jas_image_cmptparm_t *cmptparm;
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if (!(image = jas_image_create0())) {
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return 0;
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}
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image->clrspc_ = clrspc;
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image->maxcmpts_ = numcmpts;
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image->inmem_ = true;
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/* Allocate memory for the per-component information. */
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if (!(image->cmpts_ = jas_alloc2(image->maxcmpts_,
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sizeof(jas_image_cmpt_t *)))) {
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jas_image_destroy(image);
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return 0;
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}
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/* Initialize in case of failure. */
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for (cmptno = 0; cmptno < image->maxcmpts_; ++cmptno) {
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image->cmpts_[cmptno] = 0;
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}
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/* Compute the approximate raw size of the image. */
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rawsize = 0;
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for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno,
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++cmptparm) {
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rawsize += cmptparm->width * cmptparm->height *
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(cmptparm->prec + 7) / 8;
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}
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/* Decide whether to buffer the image data in memory, based on the
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raw size of the image. */
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inmem = (rawsize < JAS_IMAGE_INMEMTHRESH);
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/* Create the individual image components. */
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for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno,
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++cmptparm) {
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if (!(image->cmpts_[cmptno] = jas_image_cmpt_create(cmptparm->tlx,
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cmptparm->tly, cmptparm->hstep, cmptparm->vstep,
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cmptparm->width, cmptparm->height, cmptparm->prec,
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cmptparm->sgnd, inmem))) {
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jas_image_destroy(image);
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return 0;
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}
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++image->numcmpts_;
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}
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/* Determine the bounding box for all of the components on the
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reference grid (i.e., the image area) */
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jas_image_setbbox(image);
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return image;
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}
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jas_image_t *jas_image_create0()
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{
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jas_image_t *image;
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if (!(image = jas_malloc(sizeof(jas_image_t)))) {
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return 0;
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}
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image->tlx_ = 0;
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image->tly_ = 0;
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image->brx_ = 0;
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image->bry_ = 0;
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image->clrspc_ = JAS_CLRSPC_UNKNOWN;
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image->numcmpts_ = 0;
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image->maxcmpts_ = 0;
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image->cmpts_ = 0;
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image->inmem_ = true;
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image->cmprof_ = 0;
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return image;
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}
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jas_image_t *jas_image_copy(jas_image_t *image)
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{
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jas_image_t *newimage;
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int cmptno;
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newimage = jas_image_create0();
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if (jas_image_growcmpts(newimage, image->numcmpts_)) {
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goto error;
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}
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for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) {
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if (!(newimage->cmpts_[cmptno] = jas_image_cmpt_copy(image->cmpts_[cmptno]))) {
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goto error;
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}
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++newimage->numcmpts_;
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}
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jas_image_setbbox(newimage);
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if (image->cmprof_) {
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if (!(newimage->cmprof_ = jas_cmprof_copy(image->cmprof_)))
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goto error;
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}
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return newimage;
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error:
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if (newimage) {
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jas_image_destroy(newimage);
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}
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return 0;
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}
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static jas_image_cmpt_t *jas_image_cmpt_create0()
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{
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jas_image_cmpt_t *cmpt;
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if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) {
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return 0;
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}
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memset(cmpt, 0, sizeof(jas_image_cmpt_t));
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cmpt->type_ = JAS_IMAGE_CT_UNKNOWN;
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return cmpt;
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}
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static jas_image_cmpt_t *jas_image_cmpt_copy(jas_image_cmpt_t *cmpt)
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{
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jas_image_cmpt_t *newcmpt;
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if (!(newcmpt = jas_image_cmpt_create0())) {
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return 0;
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}
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newcmpt->tlx_ = cmpt->tlx_;
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newcmpt->tly_ = cmpt->tly_;
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newcmpt->hstep_ = cmpt->hstep_;
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newcmpt->vstep_ = cmpt->vstep_;
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newcmpt->width_ = cmpt->width_;
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newcmpt->height_ = cmpt->height_;
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newcmpt->prec_ = cmpt->prec_;
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newcmpt->sgnd_ = cmpt->sgnd_;
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newcmpt->cps_ = cmpt->cps_;
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newcmpt->type_ = cmpt->type_;
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if (!(newcmpt->stream_ = jas_stream_memopen(0, 0))) {
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return 0;
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}
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if (jas_stream_seek(cmpt->stream_, 0, SEEK_SET)) {
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return 0;
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}
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if (jas_stream_copy(newcmpt->stream_, cmpt->stream_, -1)) {
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return 0;
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}
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if (jas_stream_seek(newcmpt->stream_, 0, SEEK_SET)) {
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return 0;
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}
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return newcmpt;
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}
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void jas_image_destroy(jas_image_t *image)
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{
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int i;
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if (image->cmpts_) {
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for (i = 0; i < image->numcmpts_; ++i) {
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jas_image_cmpt_destroy(image->cmpts_[i]);
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image->cmpts_[i] = 0;
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}
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jas_free(image->cmpts_);
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}
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if (image->cmprof_)
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jas_cmprof_destroy(image->cmprof_);
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jas_free(image);
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}
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static jas_image_cmpt_t *jas_image_cmpt_create(uint_fast32_t tlx, uint_fast32_t tly,
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uint_fast32_t hstep, uint_fast32_t vstep, uint_fast32_t width, uint_fast32_t
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height, uint_fast16_t depth, bool sgnd, uint_fast32_t inmem)
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{
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jas_image_cmpt_t *cmpt;
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long size;
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if (!(cmpt = jas_malloc(sizeof(jas_image_cmpt_t)))) {
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return 0;
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}
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cmpt->type_ = JAS_IMAGE_CT_UNKNOWN;
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cmpt->tlx_ = tlx;
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cmpt->tly_ = tly;
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cmpt->hstep_ = hstep;
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cmpt->vstep_ = vstep;
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cmpt->width_ = width;
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cmpt->height_ = height;
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cmpt->prec_ = depth;
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cmpt->sgnd_ = sgnd;
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cmpt->stream_ = 0;
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cmpt->cps_ = (depth + 7) / 8;
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size = cmpt->width_ * cmpt->height_ * cmpt->cps_;
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cmpt->stream_ = (inmem) ? jas_stream_memopen(0, size) : jas_stream_tmpfile();
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if (!cmpt->stream_) {
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jas_image_cmpt_destroy(cmpt);
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return 0;
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}
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/* Zero the component data. This isn't necessary, but it is
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convenient for debugging purposes. */
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if (jas_stream_seek(cmpt->stream_, size - 1, SEEK_SET) < 0 ||
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jas_stream_putc(cmpt->stream_, 0) == EOF ||
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jas_stream_seek(cmpt->stream_, 0, SEEK_SET) < 0) {
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jas_image_cmpt_destroy(cmpt);
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return 0;
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}
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return cmpt;
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}
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static void jas_image_cmpt_destroy(jas_image_cmpt_t *cmpt)
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{
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if (cmpt->stream_) {
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jas_stream_close(cmpt->stream_);
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}
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jas_free(cmpt);
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}
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/******************************************************************************\
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* Load and save operations.
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\******************************************************************************/
|
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jas_image_t *jas_image_decode(jas_stream_t *in, int fmt, char *optstr)
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{
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jas_image_fmtinfo_t *fmtinfo;
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jas_image_t *image;
|
|
|
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image = 0;
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|
|
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/* If possible, try to determine the format of the input data. */
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if (fmt < 0) {
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if ((fmt = jas_image_getfmt(in)) < 0)
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goto error;
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}
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|
|
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/* Is it possible to decode an image represented in this format? */
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if (!(fmtinfo = jas_image_lookupfmtbyid(fmt)))
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goto error;
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if (!fmtinfo->ops.decode)
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goto error;
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|
|
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/* Decode the image. */
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if (!(image = (*fmtinfo->ops.decode)(in, optstr)))
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goto error;
|
|
|
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/* Create a color profile if needed. */
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if (!jas_clrspc_isunknown(image->clrspc_) &&
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!jas_clrspc_isgeneric(image->clrspc_) && !image->cmprof_) {
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if (!(image->cmprof_ =
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jas_cmprof_createfromclrspc(jas_image_clrspc(image))))
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goto error;
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}
|
|
|
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return image;
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error:
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if (image)
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jas_image_destroy(image);
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return 0;
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}
|
|
|
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int jas_image_encode(jas_image_t *image, jas_stream_t *out, int fmt, char *optstr)
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{
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jas_image_fmtinfo_t *fmtinfo;
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if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) {
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return -1;
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}
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return (fmtinfo->ops.encode) ? (*fmtinfo->ops.encode)(image, out,
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optstr) : (-1);
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}
|
|
|
|
/******************************************************************************\
|
|
* Component read and write operations.
|
|
\******************************************************************************/
|
|
|
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int jas_image_readcmpt(jas_image_t *image, int cmptno, jas_image_coord_t x,
|
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jas_image_coord_t y, jas_image_coord_t width, jas_image_coord_t height,
|
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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_) {
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|
return -1;
|
|
}
|
|
|
|
cmpt = image->cmpts_[cmptno];
|
|
if (x >= cmpt->width_ || y >= cmpt->height_ ||
|
|
x + width > cmpt->width_ ||
|
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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;
|
|
}
|