/*
* Copyright (c) 1999-2000 Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2003 Michael David Adams.
* All rights reserved.
GeoJasper revision: Dima (11/07/2003 17:29 - UUID and additional args)
*/
/* __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 1.1 2008/10/17 06:14:59 scuri 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"
// GeoJasper: dima
#if !defined( JAS_GEO_OMIT_PRINTING_CODE )
#include "../tiff/geotiff_buffer.h"
#endif
// end: dima
#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;
// GeoJasper: dima - begin - temporary metadata buffers
//jas_aux_buffer_t aux_buf;
//aux_buf.id = 0;
jas_metadata_boxes_t tmp_metadata;
tmp_metadata.count = JAS_IMAGE_NUM_BOXES;
for (i=0; i<tmp_metadata.count; ++i)
tmp_metadata.boxes[i] = jas_box_init();
// GeoJasper: dima - end - temporary metadata buffers
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;
//-------------------------------------------------------
case JP2_BOX_UUID: // GeoJasper: dima - begin extract uuid
{
int box_id = -1;
if ( memcmp( box->data.uuid.uuid, msi_uuid, sizeof(msi_uuid) ) == 0 ) box_id = JAS_IMAGE_BOX_GEO;
if ( memcmp( box->data.uuid.uuid, xmp_uuid, sizeof(xmp_uuid) ) == 0 ) box_id = JAS_IMAGE_BOX_XMP;
if( box_id >= 0 ) {
jas_metadata_box_t *metabox = &tmp_metadata.boxes[box_id];
if ( jas_box_alloc( metabox, box->data.uuid.data_len ) ) {
memcpy( metabox->id, box->data.uuid.uuid, sizeof(msi_uuid) );
memcpy( metabox->buf, box->data.uuid.data, metabox->size );
} // if box allocated
} // if uuid box contains info to copy
}
break; // GeoJasper: end - begin extract uuid
//-------------------------------------------------------
}
if (box) {
jp2_box_destroy(box);
box = 0;
}
if (found) {
break;
}
}
//-------------------------------------------------------
// GeoJasper: dima - begin - print geojpeg2000 if needed
#if !defined( JAS_GEO_OMIT_PRINTING_CODE )
if ( (optstr) && ( strstr(optstr, "listgeo") != NULL ) ) {
jas_metadata_box_t *metabox = &tmp_metadata.boxes[JAS_IMAGE_BOX_GEO];
long w=1, h=1;
if (dec->ihdr) {
w = dec->ihdr->data.ihdr.width;
h = dec->ihdr->data.ihdr.height;
}
if ( (memcmp(metabox->id, msi_uuid, sizeof(msi_uuid))==0) && metabox->buf != NULL )
printGTIFFromMemBufA( metabox->buf, metabox->size, w, h );
else
jas_eprintf("geojasper info: GeoJp2 info not found!\n");
exit(0);
}
if ( (optstr) && ( strstr(optstr, "listxmp") != NULL ) ) {
jas_metadata_box_t *metabox = &tmp_metadata.boxes[JAS_IMAGE_BOX_XMP];
if ( (memcmp(metabox->id, xmp_uuid, sizeof(xmp_uuid))==0) && metabox->buf != NULL ) {
// xmp buffer in is not guaranteed to be null terminated...
char *strbuf = (char *) jas_malloc(metabox->size+1);
strncpy(strbuf, metabox->buf, metabox->size);
strbuf[metabox->size] = 0;
fprintf( stdout, "%s\n", strbuf );
jas_free(strbuf);
} else
jas_eprintf("geojasper info: Adobe XMP info not found!\n");
exit(0);
}
// simple check if we have boxes
if ( (memcmp(tmp_metadata.boxes[JAS_IMAGE_BOX_GEO].id, msi_uuid, sizeof(msi_uuid))==0) &&
tmp_metadata.boxes[JAS_IMAGE_BOX_GEO].buf != NULL )
jas_eprintf("geojasper info: GeoJp2 found, size: %d\n", tmp_metadata.boxes[JAS_IMAGE_BOX_GEO].size);
if ( (memcmp(tmp_metadata.boxes[JAS_IMAGE_BOX_XMP].id, xmp_uuid, sizeof(xmp_uuid))==0) &&
tmp_metadata.boxes[JAS_IMAGE_BOX_XMP].buf != NULL )
jas_eprintf("geojasper info: Adobe XMP found, size: %d\n", tmp_metadata.boxes[JAS_IMAGE_BOX_XMP].size);
#endif // #if !defined( JAS_GEO_OMIT_PRINTING_CODE )
// GeoJasper: dima - end - print geojpeg2000 if needed
//-------------------------------------------------------
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(unsigned int, jas_image_numcmpts(dec->image))) { /* IMLIB - changed unit to unsigned int */
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(unsigned int, jas_image_numcmpts(dec->image)); ++i) { /* IMLIB - changed unit to unsigned int */
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(unsigned int, jas_image_numcmpts( /* IMLIB - changed unit to unsigned int */
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(unsigned int, jas_image_numcmpts(dec->image)); ++i) { /* IMLIB - changed unit to unsigned int */
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(unsigned int, jas_image_numcmpts(dec->image)); /* IMLIB - changed unit to unsigned int */
/* 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(unsigned int, jas_image_numcmpts(dec->image))) { /* IMLIB - changed unit to unsigned int */
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(unsigned int, jas_image_numcmpts(dec->image)); ++i) { /* IMLIB - changed unit to unsigned int */
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));
}
}
// GeoJasper: dima - let's preserve the actual image data by marking unknown components as gray
/* 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);
}
}
*/
// GeoJasper: dima - let's preserve the actual image data by marking unknown components as gray
for (i = jas_image_numcmpts(dec->image); i > 0; --i) {
if (jas_image_cmpttype(dec->image, i-1) == JAS_IMAGE_CT_UNKNOWN) {
jas_image_setcmpttype(dec->image, i-1, JAS_IMAGE_CT_GRAY_Y);
}
}
/* 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. */
// GeoJasper: begin - dima - copy buffers to the output image
for (i=0; i<tmp_metadata.count; ++i) {
dec->image->metadata.boxes[i] = tmp_metadata.boxes[i];
tmp_metadata.boxes[i] = jas_box_init();
}
// GeoJasper: end - dima - copy buffers to the output image
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;
}