/* * Copyright (c) 1999-2000 Image Power, Inc. and the University of * British Columbia. * Copyright (c) 2001-2002 Michael David Adams. * All rights reserved. */ /* __START_OF_JASPER_LICENSE__ * * JasPer Software License * * IMAGE POWER JPEG-2000 PUBLIC LICENSE * ************************************ * * GRANT: * * Permission is hereby granted, free of charge, to any person (the "User") * obtaining a copy of this software and associated documentation, to deal * in the JasPer Software without restriction, including without limitation * the right to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the JasPer Software (in source and binary forms), * and to permit persons to whom the JasPer Software is furnished to do so, * provided further that the License Conditions below are met. * * License Conditions * ****************** * * A. Redistributions of source code must retain the above copyright notice, * and this list of conditions, and the following disclaimer. * * B. Redistributions in binary form must reproduce the above copyright * notice, and this list of conditions, and the following disclaimer in * the documentation and/or other materials provided with the distribution. * * C. Neither the name of Image Power, Inc. nor any other contributor * (including, but not limited to, the University of British Columbia and * Michael David Adams) may be used to endorse or promote products derived * from this software without specific prior written permission. * * D. User agrees that it shall not commence any action against Image Power, * Inc., the University of British Columbia, Michael David Adams, or any * other contributors (collectively "Licensors") for infringement of any * intellectual property rights ("IPR") held by the User in respect of any * technology that User owns or has a right to license or sublicense and * which is an element required in order to claim compliance with ISO/IEC * 15444-1 (i.e., JPEG-2000 Part 1). "IPR" means all intellectual property * rights worldwide arising under statutory or common law, and whether * or not perfected, including, without limitation, all (i) patents and * patent applications owned or licensable by User; (ii) rights associated * with works of authorship including copyrights, copyright applications, * copyright registrations, mask work rights, mask work applications, * mask work registrations; (iii) rights relating to the protection of * trade secrets and confidential information; (iv) any right analogous * to those set forth in subsections (i), (ii), or (iii) and any other * proprietary rights relating to intangible property (other than trademark, * trade dress, or service mark rights); and (v) divisions, continuations, * renewals, reissues and extensions of the foregoing (as and to the extent * applicable) now existing, hereafter filed, issued or acquired. * * E. If User commences an infringement action against any Licensor(s) then * such Licensor(s) shall have the right to terminate User's license and * all sublicenses that have been granted hereunder by User to other parties. * * F. This software is for use only in hardware or software products that * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1). No license * or right to this Software is granted for products that do not comply * with ISO/IEC 15444-1. The JPEG-2000 Part 1 standard can be purchased * from the ISO. * * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER. THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND * CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY * OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, * WARRANTIES THAT THE JASPER SOFTWARE IS FREE OF DEFECTS, IS MERCHANTABLE, * IS FIT FOR A PARTICULAR PURPOSE OR IS NON-INFRINGING. THOSE INTENDING * TO USE THE JASPER SOFTWARE OR MODIFICATIONS THEREOF FOR USE IN HARDWARE * OR SOFTWARE PRODUCTS ARE ADVISED THAT THEIR USE MAY INFRINGE EXISTING * PATENTS, COPYRIGHTS, TRADEMARKS, OR OTHER INTELLECTUAL PROPERTY RIGHTS. * THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE JASPER SOFTWARE * IS WITH THE USER. SHOULD ANY PART OF THE JASPER SOFTWARE PROVE DEFECTIVE * IN ANY RESPECT, THE USER (AND NOT THE INITIAL DEVELOPERS, THE UNIVERSITY * OF BRITISH COLUMBIA, IMAGE POWER, INC., MICHAEL DAVID ADAMS, OR ANY * OTHER CONTRIBUTOR) SHALL ASSUME THE COST OF ANY NECESSARY SERVICING, * REPAIR OR CORRECTION. UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, * WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE * INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC., * MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE * JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO * THE USER OR ANY OTHER PERSON FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR * CONSEQUENTIAL DAMAGES OF ANY CHARACTER INCLUDING, WITHOUT LIMITATION, * DAMAGES FOR LOSS OF GOODWILL, WORK STOPPAGE, COMPUTER FAILURE OR * MALFUNCTION, OR ANY AND ALL OTHER COMMERCIAL DAMAGES OR LOSSES, EVEN IF * SUCH PARTY HAD BEEN INFORMED, OR OUGHT TO HAVE KNOWN, OF THE POSSIBILITY * OF SUCH DAMAGES. THE JASPER SOFTWARE AND UNDERLYING TECHNOLOGY ARE NOT * FAULT-TOLERANT AND ARE NOT DESIGNED, MANUFACTURED OR INTENDED FOR USE OR * RESALE AS ON-LINE CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING * FAIL-SAFE PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT * LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE * JASPER SOFTWARE OR UNDERLYING TECHNOLOGY OR PRODUCT COULD LEAD DIRECTLY * TO DEATH, PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE * ("HIGH RISK ACTIVITIES"). LICENSOR SPECIFICALLY DISCLAIMS ANY EXPRESS * OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. USER WILL NOT * KNOWINGLY USE, DISTRIBUTE OR RESELL THE JASPER SOFTWARE OR UNDERLYING * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE * NOTICE SPECIFIED IN THIS SECTION. * * __END_OF_JASPER_LICENSE__ */ /* * Image Library * * $Id: jas_image.c 14449 2005-10-20 12:15:56Z stippi $ */ /******************************************************************************\ * Includes. \******************************************************************************/ #include #include #include #include #include #include "jasper/jas_math.h" #include "jasper/jas_image.h" #include "jasper/jas_malloc.h" #include "jasper/jas_string.h" /******************************************************************************\ * Types. \******************************************************************************/ /******************************************************************************\ * Local prototypes. \******************************************************************************/ 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, JPR_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 jas_image_cmpt_t *jas_image_cmpt_create0(); static int jas_image_growcmpts(jas_image_t *image, int maxcmpts); static uint_fast32_t inttobits(jas_seqent_t v, int prec, JPR_BOOL sgnd); static jas_seqent_t bitstoint(uint_fast32_t v, int prec, JPR_BOOL sgnd); /******************************************************************************\ * 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(uint_fast16_t numcmpts, jas_image_cmptparm_t *cmptparms, int colorspace) { jas_image_t *image; uint_fast32_t rawsize; uint_fast32_t inmem; uint_fast16_t cmptno; jas_image_cmptparm_t *cmptparm; if (!(image = jas_image_create0())) { return 0; } image->colorspace_ = colorspace; image->maxcmpts_ = numcmpts; image->inmem_ = JPR_TRUE; /* Allocate memory for the per-component information. */ if (!(image->cmpts_ = jas_malloc(image->maxcmpts_ * sizeof(jas_image_cmpt_t *)))) { jas_image_destroy(image); return 0; } /* Initialize in case of failure. */ for (cmptno = 0; cmptno < image->maxcmpts_; ++cmptno) { image->cmpts_[cmptno] = 0; } /* Compute the approximate raw size of the image. */ rawsize = 0; for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno, ++cmptparm) { rawsize += cmptparm->width * cmptparm->height * (cmptparm->prec + 7) / 8; } /* Decide whether to buffer the image data in memory, based on the raw size of the image. */ inmem = (rawsize < JAS_IMAGE_INMEMTHRESH); /* Create the individual image components. */ for (cmptno = 0, cmptparm = cmptparms; cmptno < numcmpts; ++cmptno, ++cmptparm) { if (!(image->cmpts_[cmptno] = jas_image_cmpt_create(cmptparm->tlx, cmptparm->tly, cmptparm->hstep, cmptparm->vstep, cmptparm->width, cmptparm->height, cmptparm->prec, cmptparm->sgnd, inmem))) { jas_image_destroy(image); return 0; } ++image->numcmpts_; } /* Determine the bounding box for all of the components on the reference grid (i.e., the image area) */ jas_image_setbbox(image); return image; } jas_image_t *jas_image_create0() { jas_image_t *image; if (!(image = jas_malloc(sizeof(jas_image_t)))) { return 0; } image->tlx_ = 0; image->tly_ = 0; image->brx_ = 0; image->bry_ = 0; image->colorspace_ = JAS_IMAGE_CS_UNKNOWN; image->numcmpts_ = 0; image->maxcmpts_ = 0; image->cmpts_ = 0; image->inmem_ = JPR_TRUE; image->iccp_ = 0; image->iccplen_ = 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); 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_); } 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, JPR_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->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; /* If possible, try to determine the format of the input data. */ if (fmt < 0) { if ((fmt = jas_image_getfmt(in)) < 0) { return 0; } } if (!(fmtinfo = jas_image_lookupfmtbyid(fmt))) { return 0; } return (fmtinfo->ops.decode) ? (*fmtinfo->ops.decode)(in, optstr) : 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, uint_fast16_t cmptno, uint_fast32_t x, uint_fast32_t y, uint_fast32_t width, uint_fast32_t height, jas_matrix_t *data) { jas_image_cmpt_t *cmpt; uint_fast32_t i; uint_fast32_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; } #if 0 int_fast64_t jas_image_readcmpt1(jas_image_t *image, uint_fast16_t cmptno, uint_fast32_t x, uint_fast32_t y) { jas_image_cmpt_t *cmpt; int k; int c; int_fast64_t v; cmpt = image->cmpts_[cmptno]; if (jas_stream_seek(cmpt->stream_, (cmpt->width_ * y + x) * cmpt->cps_, SEEK_SET) < 0) { goto error; } v = 0; for (k = cmpt->cps_; k > 0; --k) { if ((c = jas_stream_getc(cmpt->stream_)) == EOF) { goto error; } v = (v << 8) | (c & 0xff); } if (cmpt->sgnd_) { abort(); } return v; error: return 0; } #endif int jas_image_writecmpt(jas_image_t *image, uint_fast16_t cmptno, uint_fast32_t x, uint_fast32_t y, uint_fast32_t width, uint_fast32_t height, jas_matrix_t *data) { jas_image_cmpt_t *cmpt; uint_fast32_t i; uint_fast32_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; uint_fast32_t 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, uint_fast16_t 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, uint_fast16_t cmptno, jas_image_cmptparm_t *cmptparm) { jas_image_cmpt_t *newcmpt; 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, JPR_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, JPR_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 = (!image->cmpts_) ? jas_malloc(maxcmpts * sizeof(jas_image_cmpt_t *)) : jas_realloc(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) { int cmptno; jas_seq2d_t *data; jas_image_cmpt_t *cmpt; if (!(data = jas_seq2d_create(0, 0, 1, 1))) { abort(); } for (cmptno = 0; cmptno < image->numcmpts_; ++cmptno) { cmpt = image->cmpts_[cmptno]; fprintf(out, "prec=%d sgnd=%d\n", cmpt->prec_, cmpt->sgnd_); if (jas_image_readcmpt(image, cmptno, 0, 0, 1, 1, data)) { abort(); } fprintf(out, "tlsample %ld\n", (long) jas_seq2d_get(data, 0, 0)); } jas_seq2d_destroy(data); } 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; } } }