+++ /dev/null
-/*
- * 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__
- */
-
-/*
- * JP2 Library
- *
- * $Id: jp2_dec.c,v 1.2 2008/05/26 09:40:52 vp153 Exp $
- */
-
-/******************************************************************************\
-* Includes.
-\******************************************************************************/
-
-#include "jasper/jas_image.h"
-#include "jasper/jas_stream.h"
-#include "jasper/jas_math.h"
-#include "jasper/jas_debug.h"
-#include "jasper/jas_malloc.h"
-#include "jasper/jas_version.h"
-
-#include "jp2_cod.h"
-#include "jp2_dec.h"
-
-#define JP2_VALIDATELEN (JAS_MIN(JP2_JP_LEN + 16, JAS_STREAM_MAXPUTBACK))
-
-static jp2_dec_t *jp2_dec_create(void);
-static void jp2_dec_destroy(jp2_dec_t *dec);
-static int jp2_getcs(jp2_colr_t *colr);
-static int fromiccpcs(int cs);
-static int jp2_getct(int colorspace, int type, int assoc);
-
-/******************************************************************************\
-* Functions.
-\******************************************************************************/
-
-jas_image_t *jp2_decode(jas_stream_t *in, char *optstr)
-{
- jp2_box_t *box;
- int found;
- jas_image_t *image;
- jp2_dec_t *dec;
- bool samedtype;
- int dtype;
- unsigned int i;
- jp2_cmap_t *cmapd;
- jp2_pclr_t *pclrd;
- jp2_cdef_t *cdefd;
- unsigned int channo;
- int newcmptno;
- int_fast32_t *lutents;
-#if 0
- jp2_cdefchan_t *cdefent;
- int cmptno;
-#endif
- jp2_cmapent_t *cmapent;
- jas_icchdr_t icchdr;
- jas_iccprof_t *iccprof;
-
- dec = 0;
- box = 0;
- image = 0;
-
- if (!(dec = jp2_dec_create())) {
- goto error;
- }
-
- /* Get the first box. This should be a JP box. */
- if (!(box = jp2_box_get(in))) {
- jas_eprintf("error: cannot get box\n");
- goto error;
- }
- if (box->type != JP2_BOX_JP) {
- jas_eprintf("error: expecting signature box\n");
- goto error;
- }
- if (box->data.jp.magic != JP2_JP_MAGIC) {
- jas_eprintf("incorrect magic number\n");
- goto error;
- }
- jp2_box_destroy(box);
- box = 0;
-
- /* Get the second box. This should be a FTYP box. */
- if (!(box = jp2_box_get(in))) {
- goto error;
- }
- if (box->type != JP2_BOX_FTYP) {
- jas_eprintf("expecting file type box\n");
- goto error;
- }
- jp2_box_destroy(box);
- box = 0;
-
- /* Get more boxes... */
- found = 0;
- while ((box = jp2_box_get(in))) {
- if (jas_getdbglevel() >= 1) {
- jas_eprintf("box type %s\n", box->info->name);
- }
- switch (box->type) {
- case JP2_BOX_JP2C:
- found = 1;
- break;
- case JP2_BOX_IHDR:
- if (!dec->ihdr) {
- dec->ihdr = box;
- box = 0;
- }
- break;
- case JP2_BOX_BPCC:
- if (!dec->bpcc) {
- dec->bpcc = box;
- box = 0;
- }
- break;
- case JP2_BOX_CDEF:
- if (!dec->cdef) {
- dec->cdef = box;
- box = 0;
- }
- break;
- case JP2_BOX_PCLR:
- if (!dec->pclr) {
- dec->pclr = box;
- box = 0;
- }
- break;
- case JP2_BOX_CMAP:
- if (!dec->cmap) {
- dec->cmap = box;
- box = 0;
- }
- break;
- case JP2_BOX_COLR:
- if (!dec->colr) {
- dec->colr = box;
- box = 0;
- }
- break;
- }
- if (box) {
- jp2_box_destroy(box);
- box = 0;
- }
- if (found) {
- break;
- }
- }
-
- if (!found) {
- jas_eprintf("error: no code stream found\n");
- goto error;
- }
-
- if (!(dec->image = jpc_decode(in, optstr))) {
- jas_eprintf("error: cannot decode code stream\n");
- goto error;
- }
-
- /* An IHDR box must be present. */
- if (!dec->ihdr) {
- jas_eprintf("error: missing IHDR box\n");
- goto error;
- }
-
- /* Does the number of components indicated in the IHDR box match
- the value specified in the code stream? */
- if (dec->ihdr->data.ihdr.numcmpts != JAS_CAST(uint, jas_image_numcmpts(dec->image))) {
- jas_eprintf("warning: number of components mismatch\n");
- }
-
- /* At least one component must be present. */
- if (!jas_image_numcmpts(dec->image)) {
- jas_eprintf("error: no components\n");
- goto error;
- }
-
- /* Determine if all components have the same data type. */
- samedtype = true;
- dtype = jas_image_cmptdtype(dec->image, 0);
- for (i = 1; i < JAS_CAST(uint, jas_image_numcmpts(dec->image)); ++i) {
- if (jas_image_cmptdtype(dec->image, i) != dtype) {
- samedtype = false;
- break;
- }
- }
-
- /* Is the component data type indicated in the IHDR box consistent
- with the data in the code stream? */
- if ((samedtype && dec->ihdr->data.ihdr.bpc != JP2_DTYPETOBPC(dtype)) ||
- (!samedtype && dec->ihdr->data.ihdr.bpc != JP2_IHDR_BPCNULL)) {
- jas_eprintf("warning: component data type mismatch\n");
- }
-
- /* Is the compression type supported? */
- if (dec->ihdr->data.ihdr.comptype != JP2_IHDR_COMPTYPE) {
- jas_eprintf("error: unsupported compression type\n");
- goto error;
- }
-
- if (dec->bpcc) {
- /* Is the number of components indicated in the BPCC box
- consistent with the code stream data? */
- if (dec->bpcc->data.bpcc.numcmpts != JAS_CAST(uint, jas_image_numcmpts(
- dec->image))) {
- jas_eprintf("warning: number of components mismatch\n");
- }
- /* Is the component data type information indicated in the BPCC
- box consistent with the code stream data? */
- if (!samedtype) {
- for (i = 0; i < JAS_CAST(uint, jas_image_numcmpts(dec->image)); ++i) {
- if (jas_image_cmptdtype(dec->image, i) != JP2_BPCTODTYPE(dec->bpcc->data.bpcc.bpcs[i])) {
- jas_eprintf("warning: component data type mismatch\n");
- }
- }
- } else {
- jas_eprintf("warning: superfluous BPCC box\n");
- }
- }
-
- /* A COLR box must be present. */
- if (!dec->colr) {
- jas_eprintf("error: no COLR box\n");
- goto error;
- }
-
- switch (dec->colr->data.colr.method) {
- case JP2_COLR_ENUM:
- jas_image_setclrspc(dec->image, jp2_getcs(&dec->colr->data.colr));
- break;
- case JP2_COLR_ICC:
- iccprof = jas_iccprof_createfrombuf(dec->colr->data.colr.iccp,
- dec->colr->data.colr.iccplen);
- assert(iccprof);
- jas_iccprof_gethdr(iccprof, &icchdr);
- jas_eprintf("ICC Profile CS %08x\n", icchdr.colorspc);
- jas_image_setclrspc(dec->image, fromiccpcs(icchdr.colorspc));
- dec->image->cmprof_ = jas_cmprof_createfromiccprof(iccprof);
- assert(dec->image->cmprof_);
- jas_iccprof_destroy(iccprof);
- break;
- }
-
- /* If a CMAP box is present, a PCLR box must also be present. */
- if (dec->cmap && !dec->pclr) {
- jas_eprintf("warning: missing PCLR box or superfluous CMAP box\n");
- jp2_box_destroy(dec->cmap);
- dec->cmap = 0;
- }
-
- /* If a CMAP box is not present, a PCLR box must not be present. */
- if (!dec->cmap && dec->pclr) {
- jas_eprintf("warning: missing CMAP box or superfluous PCLR box\n");
- jp2_box_destroy(dec->pclr);
- dec->pclr = 0;
- }
-
- /* Determine the number of channels (which is essentially the number
- of components after any palette mappings have been applied). */
- dec->numchans = dec->cmap ? dec->cmap->data.cmap.numchans : JAS_CAST(uint, jas_image_numcmpts(dec->image));
-
- /* Perform a basic sanity check on the CMAP box if present. */
- if (dec->cmap) {
- for (i = 0; i < dec->numchans; ++i) {
- /* Is the component number reasonable? */
- if (dec->cmap->data.cmap.ents[i].cmptno >= JAS_CAST(uint, jas_image_numcmpts(dec->image))) {
- jas_eprintf("error: invalid component number in CMAP box\n");
- goto error;
- }
- /* Is the LUT index reasonable? */
- if (dec->cmap->data.cmap.ents[i].pcol >= dec->pclr->data.pclr.numchans) {
- jas_eprintf("error: invalid CMAP LUT index\n");
- goto error;
- }
- }
- }
-
- /* Allocate space for the channel-number to component-number LUT. */
- if (!(dec->chantocmptlut = jas_malloc(dec->numchans * sizeof(uint_fast16_t)))) {
- jas_eprintf("error: no memory\n");
- goto error;
- }
-
- if (!dec->cmap) {
- for (i = 0; i < dec->numchans; ++i) {
- dec->chantocmptlut[i] = i;
- }
- } else {
- cmapd = &dec->cmap->data.cmap;
- pclrd = &dec->pclr->data.pclr;
- cdefd = &dec->cdef->data.cdef;
- for (channo = 0; channo < cmapd->numchans; ++channo) {
- cmapent = &cmapd->ents[channo];
- if (cmapent->map == JP2_CMAP_DIRECT) {
- dec->chantocmptlut[channo] = channo;
- } else if (cmapent->map == JP2_CMAP_PALETTE) {
- lutents = jas_malloc(pclrd->numlutents * sizeof(int_fast32_t));
- for (i = 0; i < pclrd->numlutents; ++i) {
- lutents[i] = pclrd->lutdata[cmapent->pcol + i * pclrd->numchans];
- }
- newcmptno = jas_image_numcmpts(dec->image);
- jas_image_depalettize(dec->image, cmapent->cmptno, pclrd->numlutents, lutents, JP2_BPCTODTYPE(pclrd->bpc[cmapent->pcol]), newcmptno);
- dec->chantocmptlut[channo] = newcmptno;
- jas_free(lutents);
-#if 0
- if (dec->cdef) {
- cdefent = jp2_cdef_lookup(cdefd, channo);
- if (!cdefent) {
- abort();
- }
- jas_image_setcmpttype(dec->image, newcmptno, jp2_getct(jas_image_clrspc(dec->image), cdefent->type, cdefent->assoc));
- } else {
- jas_image_setcmpttype(dec->image, newcmptno, jp2_getct(jas_image_clrspc(dec->image), 0, channo + 1));
- }
-#endif
- }
- }
- }
-
- /* Mark all components as being of unknown type. */
-
- for (i = 0; i < JAS_CAST(uint, jas_image_numcmpts(dec->image)); ++i) {
- jas_image_setcmpttype(dec->image, i, JAS_IMAGE_CT_UNKNOWN);
- }
-
- /* Determine the type of each component. */
- if (dec->cdef) {
- for (i = 0; i < dec->numchans; ++i) {
- jas_image_setcmpttype(dec->image,
- dec->chantocmptlut[dec->cdef->data.cdef.ents[i].channo],
- jp2_getct(jas_image_clrspc(dec->image),
- dec->cdef->data.cdef.ents[i].type, dec->cdef->data.cdef.ents[i].assoc));
- }
- } else {
- for (i = 0; i < dec->numchans; ++i) {
- jas_image_setcmpttype(dec->image, dec->chantocmptlut[i],
- jp2_getct(jas_image_clrspc(dec->image), 0, i + 1));
- }
- }
-
- /* Delete any components that are not of interest. */
- for (i = jas_image_numcmpts(dec->image); i > 0; --i) {
- if (jas_image_cmpttype(dec->image, i - 1) == JAS_IMAGE_CT_UNKNOWN) {
- jas_image_delcmpt(dec->image, i - 1);
- }
- }
-
- /* Ensure that some components survived. */
- if (!jas_image_numcmpts(dec->image)) {
- jas_eprintf("error: no components\n");
- goto error;
- }
-#if 0
-jas_eprintf("no of components is %d\n", jas_image_numcmpts(dec->image));
-#endif
-
- /* Prevent the image from being destroyed later. */
- image = dec->image;
- dec->image = 0;
-
- jp2_dec_destroy(dec);
-
- return image;
-
-error:
- if (box) {
- jp2_box_destroy(box);
- }
- if (dec) {
- jp2_dec_destroy(dec);
- }
- return 0;
-}
-
-int jp2_validate(jas_stream_t *in)
-{
- char buf[JP2_VALIDATELEN];
- int i;
- int n;
-#if 0
- jas_stream_t *tmpstream;
- jp2_box_t *box;
-#endif
-
- assert(JAS_STREAM_MAXPUTBACK >= JP2_VALIDATELEN);
-
- /* Read the validation data (i.e., the data used for detecting
- the format). */
- if ((n = jas_stream_read(in, buf, JP2_VALIDATELEN)) < 0) {
- return -1;
- }
-
- /* Put the validation data back onto the stream, so that the
- stream position will not be changed. */
- for (i = n - 1; i >= 0; --i) {
- if (jas_stream_ungetc(in, buf[i]) == EOF) {
- return -1;
- }
- }
-
- /* Did we read enough data? */
- if (n < JP2_VALIDATELEN) {
- return -1;
- }
-
- /* Is the box type correct? */
- if (((buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7]) !=
- JP2_BOX_JP)
- {
- return -1;
- }
-
- return 0;
-}
-
-static jp2_dec_t *jp2_dec_create(void)
-{
- jp2_dec_t *dec;
-
- if (!(dec = jas_malloc(sizeof(jp2_dec_t)))) {
- return 0;
- }
- dec->ihdr = 0;
- dec->bpcc = 0;
- dec->cdef = 0;
- dec->pclr = 0;
- dec->image = 0;
- dec->chantocmptlut = 0;
- dec->cmap = 0;
- dec->colr = 0;
- return dec;
-}
-
-static void jp2_dec_destroy(jp2_dec_t *dec)
-{
- if (dec->ihdr) {
- jp2_box_destroy(dec->ihdr);
- }
- if (dec->bpcc) {
- jp2_box_destroy(dec->bpcc);
- }
- if (dec->cdef) {
- jp2_box_destroy(dec->cdef);
- }
- if (dec->pclr) {
- jp2_box_destroy(dec->pclr);
- }
- if (dec->image) {
- jas_image_destroy(dec->image);
- }
- if (dec->cmap) {
- jp2_box_destroy(dec->cmap);
- }
- if (dec->colr) {
- jp2_box_destroy(dec->colr);
- }
- if (dec->chantocmptlut) {
- jas_free(dec->chantocmptlut);
- }
- jas_free(dec);
-}
-
-static int jp2_getct(int colorspace, int type, int assoc)
-{
- if (type == 1 && assoc == 0) {
- return JAS_IMAGE_CT_OPACITY;
- }
- if (type == 0 && assoc >= 1 && assoc <= 65534) {
- switch (colorspace) {
- case JAS_CLRSPC_FAM_RGB:
- switch (assoc) {
- case JP2_CDEF_RGB_R:
- return JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R);
- break;
- case JP2_CDEF_RGB_G:
- return JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G);
- break;
- case JP2_CDEF_RGB_B:
- return JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B);
- break;
- }
- break;
- case JAS_CLRSPC_FAM_YCBCR:
- switch (assoc) {
- case JP2_CDEF_YCBCR_Y:
- return JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_YCBCR_Y);
- break;
- case JP2_CDEF_YCBCR_CB:
- return JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_YCBCR_CB);
- break;
- case JP2_CDEF_YCBCR_CR:
- return JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_YCBCR_CR);
- break;
- }
- break;
- case JAS_CLRSPC_FAM_GRAY:
- switch (assoc) {
- case JP2_CDEF_GRAY_Y:
- return JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y);
- break;
- }
- break;
- default:
- return JAS_IMAGE_CT_COLOR(assoc - 1);
- break;
- }
- }
- return JAS_IMAGE_CT_UNKNOWN;
-}
-
-static int jp2_getcs(jp2_colr_t *colr)
-{
- if (colr->method == JP2_COLR_ENUM) {
- switch (colr->csid) {
- case JP2_COLR_SRGB:
- return JAS_CLRSPC_SRGB;
- break;
- case JP2_COLR_SYCC:
- return JAS_CLRSPC_SYCBCR;
- break;
- case JP2_COLR_SGRAY:
- return JAS_CLRSPC_SGRAY;
- break;
- }
- }
- return JAS_CLRSPC_UNKNOWN;
-}
-
-static int fromiccpcs(int cs)
-{
- switch (cs) {
- case ICC_CS_RGB:
- return JAS_CLRSPC_GENRGB;
- break;
- case ICC_CS_YCBCR:
- return JAS_CLRSPC_GENYCBCR;
- break;
- case ICC_CS_GRAY:
- return JAS_CLRSPC_GENGRAY;
- break;
- }
- return JAS_CLRSPC_UNKNOWN;
-}
projects / opencv / blobdiff