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gdaljp2metadata.cpp
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/******************************************************************************
*
* Project: GDAL
* Purpose: GDALJP2Metadata - Read GeoTIFF and/or GML georef info.
* Author: Frank Warmerdam, [email protected]
* Even Rouault <even dot rouault at spatialys dot com>
*
******************************************************************************
* Copyright (c) 2005, Frank Warmerdam <[email protected]>
* Copyright (c) 2010-2015, Even Rouault <even dot rouault at spatialys dot com>
* Copyright (c) 2015, European Union Satellite Centre
*
* Permission is hereby granted, free of charge, to any person 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, sublicense,
* 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:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "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. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "cpl_port.h"
#include "gdaljp2metadata.h"
#include "gdaljp2metadatagenerator.h"
#include <cmath>
#include <cstddef>
#include <cstdlib>
#include <cstring>
#if HAVE_FCNTL_H
# include <fcntl.h>
#endif
#include <algorithm>
#include <memory>
#include <set>
#include <string>
#include <vector>
#include "cpl_error.h"
#include "cpl_string.h"
#include "cpl_minixml.h"
#include "gdaljp2metadatagenerator.h"
#include "gt_wkt_srs_for_gdal.h"
#include "ogr_api.h"
#include "ogr_core.h"
#include "ogr_geometry.h"
#include "ogr_spatialref.h"
#include "ogrgeojsonreader.h"
/*! @cond Doxygen_Suppress */
CPL_CVSID("$Id$")
static const unsigned char msi_uuid2[16] = {
0xb1,0x4b,0xf8,0xbd,0x08,0x3d,0x4b,0x43,
0xa5,0xae,0x8c,0xd7,0xd5,0xa6,0xce,0x03 };
static const unsigned char msig_uuid[16] = {
0x96,0xA9,0xF1,0xF1,0xDC,0x98,0x40,0x2D,
0xA7,0xAE,0xD6,0x8E,0x34,0x45,0x18,0x09 };
static const unsigned char xmp_uuid[16] = {
0xBE,0x7A,0xCF,0xCB,0x97,0xA9,0x42,0xE8,
0x9C,0x71,0x99,0x94,0x91,0xE3,0xAF,0xAC };
struct _GDALJP2GeoTIFFBox
{
int nGeoTIFFSize;
GByte *pabyGeoTIFFData;
};
constexpr int MAX_JP2GEOTIFF_BOXES = 2;
/************************************************************************/
/* GDALJP2Metadata() */
/************************************************************************/
GDALJP2Metadata::GDALJP2Metadata() :
nGeoTIFFBoxesCount(0),
pasGeoTIFFBoxes(nullptr),
nMSIGSize(0),
pabyMSIGData(nullptr),
papszGMLMetadata(nullptr),
bHaveGeoTransform(false),
adfGeoTransform{0.0, 1.0, 0.0, 0.0, 0.0, 1.0},
bPixelIsPoint(false),
nGCPCount(0),
pasGCPList(nullptr),
papszRPCMD(nullptr),
papszMetadata(nullptr),
pszXMPMetadata(nullptr),
pszGDALMultiDomainMetadata(nullptr),
pszXMLIPR(nullptr)
{
}
/************************************************************************/
/* ~GDALJP2Metadata() */
/************************************************************************/
GDALJP2Metadata::~GDALJP2Metadata()
{
if( nGCPCount > 0 )
{
GDALDeinitGCPs( nGCPCount, pasGCPList );
CPLFree( pasGCPList );
}
CSLDestroy(papszRPCMD);
for( int i = 0; i < nGeoTIFFBoxesCount; ++i )
{
CPLFree( pasGeoTIFFBoxes[i].pabyGeoTIFFData );
}
CPLFree( pasGeoTIFFBoxes );
CPLFree( pabyMSIGData );
CSLDestroy( papszGMLMetadata );
CSLDestroy( papszMetadata );
CPLFree( pszXMPMetadata );
CPLFree( pszGDALMultiDomainMetadata );
CPLFree( pszXMLIPR );
}
/************************************************************************/
/* ReadAndParse() */
/* */
/* Read a JP2 file and try to collect georeferencing */
/* information from the various available forms. Returns TRUE */
/* if anything useful is found. */
/************************************************************************/
int GDALJP2Metadata::ReadAndParse( const char *pszFilename, int nGEOJP2Index,
int nGMLJP2Index, int nMSIGIndex,
int nWorldFileIndex, int *pnIndexUsed )
{
VSILFILE *fpLL = VSIFOpenL( pszFilename, "rb" );
if( fpLL == nullptr )
{
CPLDebug( "GDALJP2Metadata", "Could not even open %s.",
pszFilename );
return FALSE;
}
int nIndexUsed = -1;
bool bRet = CPL_TO_BOOL(ReadAndParse( fpLL, nGEOJP2Index, nGMLJP2Index,
nMSIGIndex, &nIndexUsed ));
CPL_IGNORE_RET_VAL(VSIFCloseL( fpLL ));
/* -------------------------------------------------------------------- */
/* If we still don't have a geotransform, look for a world */
/* file. */
/* -------------------------------------------------------------------- */
if( nWorldFileIndex >= 0 &&
((bHaveGeoTransform && nWorldFileIndex < nIndexUsed) ||
!bHaveGeoTransform) )
{
bHaveGeoTransform = CPL_TO_BOOL(
GDALReadWorldFile( pszFilename, nullptr, adfGeoTransform )
|| GDALReadWorldFile( pszFilename, ".wld", adfGeoTransform ) );
bRet |= bHaveGeoTransform;
}
if( pnIndexUsed )
*pnIndexUsed = nIndexUsed;
return bRet;
}
int GDALJP2Metadata::ReadAndParse( VSILFILE *fpLL, int nGEOJP2Index,
int nGMLJP2Index, int nMSIGIndex,
int *pnIndexUsed )
{
ReadBoxes( fpLL );
/* -------------------------------------------------------------------- */
/* Try JP2GeoTIFF, GML and finally MSIG in specified order. */
/* -------------------------------------------------------------------- */
std::set<int> aoSetPriorities;
if( nGEOJP2Index >= 0 ) aoSetPriorities.insert(nGEOJP2Index);
if( nGMLJP2Index >= 0 ) aoSetPriorities.insert(nGMLJP2Index);
if( nMSIGIndex >= 0 ) aoSetPriorities.insert(nMSIGIndex);
std::set<int>::iterator oIter = aoSetPriorities.begin();
for( ; oIter != aoSetPriorities.end(); ++oIter )
{
int nIndex = *oIter;
if( (nIndex == nGEOJP2Index && ParseJP2GeoTIFF()) ||
(nIndex == nGMLJP2Index && ParseGMLCoverageDesc()) ||
(nIndex == nMSIGIndex && ParseMSIG() ) )
{
if( pnIndexUsed )
*pnIndexUsed = nIndex;
break;
}
}
/* -------------------------------------------------------------------- */
/* Return success either either of projection or geotransform */
/* or gcps. */
/* -------------------------------------------------------------------- */
return bHaveGeoTransform
|| nGCPCount > 0
|| !m_oSRS.IsEmpty()
|| papszRPCMD != nullptr;
}
/************************************************************************/
/* CollectGMLData() */
/* */
/* Read all the asoc boxes after this node, and store the */
/* contain xml documents along with the name from the label. */
/************************************************************************/
void GDALJP2Metadata::CollectGMLData( GDALJP2Box *poGMLData )
{
GDALJP2Box oChildBox( poGMLData->GetFILE() );
if( !oChildBox.ReadFirstChild( poGMLData ) )
return;
while( strlen(oChildBox.GetType()) > 0 )
{
if( EQUAL(oChildBox.GetType(),"asoc") )
{
GDALJP2Box oSubChildBox( oChildBox.GetFILE() );
if( !oSubChildBox.ReadFirstChild( &oChildBox ) )
break;
char *pszLabel = nullptr;
char *pszXML = nullptr;
while( strlen(oSubChildBox.GetType()) > 0 )
{
if( EQUAL(oSubChildBox.GetType(),"lbl ") )
pszLabel = reinterpret_cast<char *>(oSubChildBox.ReadBoxData());
else if( EQUAL(oSubChildBox.GetType(),"xml ") )
{
pszXML =
reinterpret_cast<char *>( oSubChildBox.ReadBoxData() );
GIntBig nXMLLength = oSubChildBox.GetDataLength();
// Some GML data contains \0 instead of \n.
// See http://trac.osgeo.org/gdal/ticket/5760
// TODO(schwehr): Explain the numbers in the next line.
if( pszXML != nullptr && nXMLLength < 100 * 1024 * 1024 )
{
// coverity[tainted_data].
for( GIntBig i = nXMLLength - 1; i >= 0; --i )
{
if( pszXML[i] == '\0' )
--nXMLLength;
else
break;
}
// coverity[tainted_data]
GIntBig i = 0; // Used after for.
for( ; i < nXMLLength; ++i )
{
if( pszXML[i] == '\0' )
break;
}
if( i < nXMLLength )
{
CPLPushErrorHandler(CPLQuietErrorHandler);
CPLXMLTreeCloser psNode(CPLParseXMLString(pszXML));
CPLPopErrorHandler();
if( psNode == nullptr )
{
CPLDebug(
"GMLJP2",
"GMLJP2 data contains nul characters "
"inside content. Replacing them by \\n");
// coverity[tainted_data]
for( GIntBig j = 0; j < nXMLLength; ++j )
{
if( pszXML[j] == '\0' )
pszXML[j] = '\n';
}
}
}
}
}
if( !oSubChildBox.ReadNextChild( &oChildBox ) )
break;
}
if( pszLabel != nullptr && pszXML != nullptr )
{
papszGMLMetadata = CSLSetNameValue( papszGMLMetadata,
pszLabel, pszXML );
if( strcmp(pszLabel, "gml.root-instance") == 0 &&
pszGDALMultiDomainMetadata == nullptr &&
strstr(pszXML, "GDALMultiDomainMetadata") != nullptr )
{
CPLXMLTreeCloser psTree(CPLParseXMLString(pszXML));
if( psTree != nullptr )
{
CPLXMLNode* psGDALMDMD =
CPLSearchXMLNode(psTree.get(), "GDALMultiDomainMetadata");
if( psGDALMDMD )
pszGDALMultiDomainMetadata =
CPLSerializeXMLTree(psGDALMDMD);
}
}
}
CPLFree( pszLabel );
CPLFree( pszXML );
}
if( !oChildBox.ReadNextChild( poGMLData ) )
break;
}
}
/************************************************************************/
/* ReadBoxes() */
/************************************************************************/
int GDALJP2Metadata::ReadBoxes( VSILFILE *fpVSIL )
{
GDALJP2Box oBox( fpVSIL );
if (!oBox.ReadFirst())
return FALSE;
int iBox = 0;
while( strlen(oBox.GetType()) > 0 )
{
#ifdef DEBUG
if (CPLTestBool(CPLGetConfigOption("DUMP_JP2_BOXES", "NO")))
oBox.DumpReadable(stderr);
#endif
/* -------------------------------------------------------------------- */
/* Collect geotiff box. */
/* -------------------------------------------------------------------- */
if( EQUAL(oBox.GetType(),"uuid")
&& memcmp( oBox.GetUUID(), msi_uuid2, 16 ) == 0 )
{
// Erdas JPEG2000 files sometimes contain 2 GeoTIFF UUID boxes. One
// that is correct, another one that does not contain correct
// georeferencing. Fetch at most 2 of them for later analysis.
if( nGeoTIFFBoxesCount == MAX_JP2GEOTIFF_BOXES )
{
CPLDebug( "GDALJP2",
"Too many UUID GeoTIFF boxes. Ignoring this one" );
}
else
{
const int nGeoTIFFSize =
static_cast<int>( oBox.GetDataLength() );
GByte* pabyGeoTIFFData = oBox.ReadBoxData();
if( pabyGeoTIFFData == nullptr )
{
CPLDebug( "GDALJP2",
"Cannot read data for UUID GeoTIFF box" );
}
else
{
pasGeoTIFFBoxes = static_cast<GDALJP2GeoTIFFBox *>(
CPLRealloc(
pasGeoTIFFBoxes,
sizeof(GDALJP2GeoTIFFBox) *
(nGeoTIFFBoxesCount + 1) ) );
pasGeoTIFFBoxes[nGeoTIFFBoxesCount].nGeoTIFFSize =
nGeoTIFFSize;
pasGeoTIFFBoxes[nGeoTIFFBoxesCount].pabyGeoTIFFData =
pabyGeoTIFFData;
++nGeoTIFFBoxesCount;
}
}
}
/* -------------------------------------------------------------------- */
/* Collect MSIG box. */
/* -------------------------------------------------------------------- */
if( EQUAL(oBox.GetType(),"uuid")
&& memcmp( oBox.GetUUID(), msig_uuid, 16 ) == 0 )
{
if( nMSIGSize == 0 )
{
nMSIGSize = static_cast<int>( oBox.GetDataLength() );
pabyMSIGData = oBox.ReadBoxData();
if( nMSIGSize < 70
|| pabyMSIGData == nullptr
|| memcmp( pabyMSIGData, "MSIG/", 5 ) != 0 )
{
CPLFree( pabyMSIGData );
pabyMSIGData = nullptr;
nMSIGSize = 0;
}
}
else
{
CPLDebug("GDALJP2", "Too many UUID MSIG boxes. Ignoring this one");
}
}
/* -------------------------------------------------------------------- */
/* Collect XMP box. */
/* -------------------------------------------------------------------- */
if( EQUAL(oBox.GetType(),"uuid")
&& memcmp( oBox.GetUUID(), xmp_uuid, 16 ) == 0 )
{
if( pszXMPMetadata == nullptr )
{
pszXMPMetadata = reinterpret_cast<char *>(oBox.ReadBoxData());
}
else
{
CPLDebug("GDALJP2", "Too many UUID XMP boxes. Ignoring this one");
}
}
/* -------------------------------------------------------------------- */
/* Process asoc box looking for Labelled GML data. */
/* -------------------------------------------------------------------- */
if( EQUAL(oBox.GetType(),"asoc") )
{
GDALJP2Box oSubBox( fpVSIL );
if( oSubBox.ReadFirstChild( &oBox ) &&
EQUAL(oSubBox.GetType(),"lbl ") )
{
char *pszLabel = reinterpret_cast<char *>(oSubBox.ReadBoxData());
if( pszLabel != nullptr && EQUAL(pszLabel,"gml.data") )
{
CollectGMLData( &oBox );
}
CPLFree( pszLabel );
}
}
/* -------------------------------------------------------------------- */
/* Process simple xml boxes. */
/* -------------------------------------------------------------------- */
if( EQUAL(oBox.GetType(),"xml ") )
{
CPLString osBoxName;
char *pszXML = reinterpret_cast<char *>(oBox.ReadBoxData());
if( pszXML != nullptr &&
STARTS_WITH(pszXML, "<GDALMultiDomainMetadata>") )
{
if( pszGDALMultiDomainMetadata == nullptr )
{
pszGDALMultiDomainMetadata = pszXML;
pszXML = nullptr;
}
else
{
CPLDebug(
"GDALJP2",
"Too many GDAL metadata boxes. Ignoring this one");
}
}
else if( pszXML != nullptr )
{
osBoxName.Printf( "BOX_%d", iBox++ );
papszGMLMetadata = CSLSetNameValue( papszGMLMetadata,
osBoxName, pszXML );
}
CPLFree( pszXML );
}
/* -------------------------------------------------------------------- */
/* Check for a resd box in jp2h. */
/* -------------------------------------------------------------------- */
if( EQUAL(oBox.GetType(),"jp2h") )
{
GDALJP2Box oSubBox( fpVSIL );
for( oSubBox.ReadFirstChild( &oBox );
strlen(oSubBox.GetType()) > 0;
oSubBox.ReadNextChild( &oBox ) )
{
if( EQUAL(oSubBox.GetType(),"res ") )
{
GDALJP2Box oResBox( fpVSIL );
oResBox.ReadFirstChild( &oSubBox );
// We will use either the resd or resc box, which ever
// happens to be first. Should we prefer resd?
unsigned char *pabyResData = nullptr;
if( oResBox.GetDataLength() == 10 &&
(pabyResData = oResBox.ReadBoxData()) != nullptr )
{
int nVertNum, nVertDen, nVertExp;
int nHorzNum, nHorzDen, nHorzExp;
nVertNum = pabyResData[0] * 256 + pabyResData[1];
nVertDen = pabyResData[2] * 256 + pabyResData[3];
nHorzNum = pabyResData[4] * 256 + pabyResData[5];
nHorzDen = pabyResData[6] * 256 + pabyResData[7];
nVertExp = pabyResData[8];
nHorzExp = pabyResData[9];
// compute in pixels/cm
const double dfVertRes =
(nVertNum / static_cast<double>(nVertDen)) *
pow(10.0, nVertExp) / 100;
const double dfHorzRes =
(nHorzNum / static_cast<double>(nHorzDen)) *
pow(10.0,nHorzExp)/100;
CPLString osFormatter;
papszMetadata = CSLSetNameValue(
papszMetadata,
"TIFFTAG_XRESOLUTION",
osFormatter.Printf("%g",dfHorzRes) );
papszMetadata = CSLSetNameValue(
papszMetadata,
"TIFFTAG_YRESOLUTION",
osFormatter.Printf("%g",dfVertRes) );
papszMetadata = CSLSetNameValue(
papszMetadata,
"TIFFTAG_RESOLUTIONUNIT",
"3 (pixels/cm)" );
CPLFree( pabyResData );
}
}
}
}
/* -------------------------------------------------------------------- */
/* Collect IPR box. */
/* -------------------------------------------------------------------- */
if( EQUAL(oBox.GetType(),"jp2i") )
{
if( pszXMLIPR == nullptr )
{
pszXMLIPR = reinterpret_cast<char*>(oBox.ReadBoxData());
CPLXMLTreeCloser psNode(CPLParseXMLString(pszXMLIPR));
if( psNode == nullptr )
{
CPLFree(pszXMLIPR);
pszXMLIPR = nullptr;
}
}
else
{
CPLDebug("GDALJP2", "Too many IPR boxes. Ignoring this one");
}
}
if (!oBox.ReadNext())
break;
}
return TRUE;
}
/************************************************************************/
/* ParseJP2GeoTIFF() */
/************************************************************************/
int GDALJP2Metadata::ParseJP2GeoTIFF()
{
if(! CPLTestBool(CPLGetConfigOption("GDAL_USE_GEOJP2", "TRUE")) )
return FALSE;
bool abValidProjInfo[MAX_JP2GEOTIFF_BOXES] = { false };
OGRSpatialReferenceH ahSRS[MAX_JP2GEOTIFF_BOXES] = { nullptr };
double aadfGeoTransform[MAX_JP2GEOTIFF_BOXES][6];
int anGCPCount[MAX_JP2GEOTIFF_BOXES] = { 0 };
GDAL_GCP *apasGCPList[MAX_JP2GEOTIFF_BOXES] = { nullptr };
int abPixelIsPoint[MAX_JP2GEOTIFF_BOXES] = { 0 };
char** apapszRPCMD[MAX_JP2GEOTIFF_BOXES] = { nullptr };
const int nMax = std::min(nGeoTIFFBoxesCount, MAX_JP2GEOTIFF_BOXES);
for( int i = 0; i < nMax; ++i )
{
/* -------------------------------------------------------------------- */
/* Convert raw data into projection and geotransform. */
/* -------------------------------------------------------------------- */
aadfGeoTransform[i][0] = 0;
aadfGeoTransform[i][1] = 1;
aadfGeoTransform[i][2] = 0;
aadfGeoTransform[i][3] = 0;
aadfGeoTransform[i][4] = 0;
aadfGeoTransform[i][5] = 1;
if( GTIFWktFromMemBufEx( pasGeoTIFFBoxes[i].nGeoTIFFSize,
pasGeoTIFFBoxes[i].pabyGeoTIFFData,
&ahSRS[i], aadfGeoTransform[i],
&anGCPCount[i], &apasGCPList[i],
&abPixelIsPoint[i], &apapszRPCMD[i] ) == CE_None )
{
if( ahSRS[i] != nullptr )
abValidProjInfo[i] = true;
}
}
// Detect which box is the better one.
int iBestIndex = -1;
for( int i = 0; i < nMax; ++i )
{
if( abValidProjInfo[i] && iBestIndex < 0 )
{
iBestIndex = i;
}
else if( abValidProjInfo[i] && ahSRS[i] != nullptr )
{
// Anything else than a LOCAL_CS will probably be better.
if( OSRIsLocal(ahSRS[iBestIndex]) )
iBestIndex = i;
}
}
if( iBestIndex < 0 )
{
for( int i = 0; i < nMax; ++i )
{
if( aadfGeoTransform[i][0] != 0
|| aadfGeoTransform[i][1] != 1
|| aadfGeoTransform[i][2] != 0
|| aadfGeoTransform[i][3] != 0
|| aadfGeoTransform[i][4] != 0
|| aadfGeoTransform[i][5] != 1
|| anGCPCount[i] > 0
|| apapszRPCMD[i] != nullptr )
{
iBestIndex = i;
}
}
}
if( iBestIndex >= 0 )
{
m_oSRS.Clear();
if( ahSRS[iBestIndex] )
m_oSRS = *(OGRSpatialReference::FromHandle(ahSRS[iBestIndex]));
m_oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
memcpy(adfGeoTransform, aadfGeoTransform[iBestIndex], 6 * sizeof(double));
nGCPCount = anGCPCount[iBestIndex];
pasGCPList = apasGCPList[iBestIndex];
bPixelIsPoint = CPL_TO_BOOL(abPixelIsPoint[iBestIndex]);
papszRPCMD = apapszRPCMD[iBestIndex];
if( adfGeoTransform[0] != 0
|| adfGeoTransform[1] != 1
|| adfGeoTransform[2] != 0
|| adfGeoTransform[3] != 0
|| adfGeoTransform[4] != 0
|| adfGeoTransform[5] != 1 )
bHaveGeoTransform = true;
if( ahSRS[iBestIndex] )
{
char* pszWKT = nullptr;
m_oSRS.exportToWkt(&pszWKT);
CPLDebug( "GDALJP2Metadata",
"Got projection from GeoJP2 (geotiff) box (%d): %s",
iBestIndex, pszWKT ? pszWKT : "(null)" );
CPLFree(pszWKT);
}
}
// Cleanup unused boxes.
for( int i = 0; i < nMax; ++i )
{
if( i != iBestIndex )
{
if( anGCPCount[i] > 0 )
{
GDALDeinitGCPs( anGCPCount[i], apasGCPList[i] );
CPLFree( apasGCPList[i] );
}
CSLDestroy( apapszRPCMD[i] );
}
OSRDestroySpatialReference( ahSRS[i] );
}
return iBestIndex >= 0;
}
/************************************************************************/
/* ParseMSIG() */
/************************************************************************/
int GDALJP2Metadata::ParseMSIG()
{
if( nMSIGSize < 70 )
return FALSE;
/* -------------------------------------------------------------------- */
/* Try and extract worldfile parameters and adjust. */
/* -------------------------------------------------------------------- */
memcpy( adfGeoTransform + 0, pabyMSIGData + 22 + 8 * 4, 8 );
memcpy( adfGeoTransform + 1, pabyMSIGData + 22 + 8 * 0, 8 );
memcpy( adfGeoTransform + 2, pabyMSIGData + 22 + 8 * 2, 8 );
memcpy( adfGeoTransform + 3, pabyMSIGData + 22 + 8 * 5, 8 );
memcpy( adfGeoTransform + 4, pabyMSIGData + 22 + 8 * 1, 8 );
memcpy( adfGeoTransform + 5, pabyMSIGData + 22 + 8 * 3, 8 );
// data is in LSB (little endian) order in file.
CPL_LSBPTR64( adfGeoTransform + 0 );
CPL_LSBPTR64( adfGeoTransform + 1 );
CPL_LSBPTR64( adfGeoTransform + 2 );
CPL_LSBPTR64( adfGeoTransform + 3 );
CPL_LSBPTR64( adfGeoTransform + 4 );
CPL_LSBPTR64( adfGeoTransform + 5 );
// correct for center of pixel vs. top left of pixel
adfGeoTransform[0] -= 0.5 * adfGeoTransform[1];
adfGeoTransform[0] -= 0.5 * adfGeoTransform[2];
adfGeoTransform[3] -= 0.5 * adfGeoTransform[4];
adfGeoTransform[3] -= 0.5 * adfGeoTransform[5];
bHaveGeoTransform = true;
return TRUE;
}
/************************************************************************/
/* GetDictionaryItem() */
/************************************************************************/
static CPLXMLNode *
GetDictionaryItem( char **papszGMLMetadata, const char *pszURN )
{
char *pszLabel = nullptr;
if( STARTS_WITH_CI(pszURN, "urn:jp2k:xml:") )
pszLabel = CPLStrdup( pszURN + 13 );
else if( STARTS_WITH_CI(pszURN, "urn:ogc:tc:gmljp2:xml:") )
pszLabel = CPLStrdup( pszURN + 22 );
else if( STARTS_WITH_CI(pszURN, "gmljp2://xml/") )
pszLabel = CPLStrdup( pszURN + 13 );
else
pszLabel = CPLStrdup( pszURN );
/* -------------------------------------------------------------------- */
/* Split out label and fragment id. */
/* -------------------------------------------------------------------- */
const char *pszFragmentId = nullptr;
{
int i = 0; // Used after for.
for( ; pszLabel[i] != '#'; ++i )
{
if( pszLabel[i] == '\0' )
{
CPLFree(pszLabel);
return nullptr;
}
}
pszFragmentId = pszLabel + i + 1;
pszLabel[i] = '\0';
}
/* -------------------------------------------------------------------- */
/* Can we find an XML box with the desired label? */
/* -------------------------------------------------------------------- */
const char *pszDictionary =
CSLFetchNameValue( papszGMLMetadata, pszLabel );
if( pszDictionary == nullptr )
{
CPLFree(pszLabel);
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Try and parse the dictionary. */
/* -------------------------------------------------------------------- */
CPLXMLTreeCloser psDictTree(CPLParseXMLString( pszDictionary ));
if( psDictTree == nullptr )
{
CPLFree(pszLabel);
return nullptr;
}
CPLStripXMLNamespace( psDictTree.get(), nullptr, TRUE );
CPLXMLNode *psDictRoot = CPLSearchXMLNode( psDictTree.get(), "=Dictionary" );
if( psDictRoot == nullptr )
{
CPLFree(pszLabel);
return nullptr;
}
/* -------------------------------------------------------------------- */
/* Search for matching id. */
/* -------------------------------------------------------------------- */
CPLXMLNode *psEntry, *psHit = nullptr;
for( psEntry = psDictRoot->psChild;
psEntry != nullptr && psHit == nullptr;
psEntry = psEntry->psNext )
{
const char *pszId;
if( psEntry->eType != CXT_Element )
continue;
if( !EQUAL(psEntry->pszValue,"dictionaryEntry") )
continue;
if( psEntry->psChild == nullptr )
continue;
pszId = CPLGetXMLValue( psEntry->psChild, "id", "" );
if( EQUAL(pszId, pszFragmentId) )
psHit = CPLCloneXMLTree( psEntry->psChild );
}
/* -------------------------------------------------------------------- */
/* Cleanup */
/* -------------------------------------------------------------------- */
CPLFree( pszLabel );
return psHit;
}
/************************************************************************/
/* GMLSRSLookup() */
/* */
/* Lookup an SRS in a dictionary inside this file. We will get */
/* something like: */
/* urn:jp2k:xml:CRSDictionary.xml#crs1112 */
/* */
/* We need to split the filename from the fragment id, and */
/* lookup the fragment in the file if we can find it our */
/* list of labelled xml boxes. */
/************************************************************************/
int GDALJP2Metadata::GMLSRSLookup( const char *pszURN )
{
CPLXMLTreeCloser psDictEntry(GetDictionaryItem( papszGMLMetadata, pszURN ));
if( psDictEntry == nullptr )
return FALSE;
/* -------------------------------------------------------------------- */
/* Reserialize this fragment. */
/* -------------------------------------------------------------------- */
char *pszDictEntryXML = CPLSerializeXMLTree( psDictEntry.get() );
psDictEntry.reset();
/* -------------------------------------------------------------------- */
/* Try to convert into an OGRSpatialReference. */
/* -------------------------------------------------------------------- */
OGRSpatialReference oSRS;
bool bSuccess = false;
if( oSRS.importFromXML( pszDictEntryXML ) == OGRERR_NONE )
{
m_oSRS = oSRS;
m_oSRS.SetAxisMappingStrategy(OAMS_TRADITIONAL_GIS_ORDER);
bSuccess = true;
}
CPLFree( pszDictEntryXML );
return bSuccess;
}
/************************************************************************/
/* ParseGMLCoverageDesc() */
/************************************************************************/
int GDALJP2Metadata::ParseGMLCoverageDesc()
{
if(! CPLTestBool(CPLGetConfigOption("GDAL_USE_GMLJP2", "TRUE")) )
return FALSE;
/* -------------------------------------------------------------------- */
/* Do we have an XML doc that is apparently a coverage */
/* description? */
/* -------------------------------------------------------------------- */
const char *pszCoverage = CSLFetchNameValue( papszGMLMetadata,
"gml.root-instance" );
if( pszCoverage == nullptr )
return FALSE;
CPLDebug( "GDALJP2Metadata", "Found GML Box:\n%s", pszCoverage );
/* -------------------------------------------------------------------- */
/* Try parsing the XML. Wipe any namespace prefixes. */
/* -------------------------------------------------------------------- */
CPLXMLTreeCloser psXML(CPLParseXMLString( pszCoverage ));
if( psXML == nullptr )
return FALSE;
CPLStripXMLNamespace( psXML.get(), nullptr, TRUE );
/* -------------------------------------------------------------------- */
/* Isolate RectifiedGrid. Eventually we will need to support */
/* other georeferencing objects. */
/* -------------------------------------------------------------------- */
CPLXMLNode *psRG = CPLSearchXMLNode( psXML.get(), "=RectifiedGrid" );
CPLXMLNode *psOriginPoint = nullptr;
const char *pszOffset1 = nullptr;
const char *pszOffset2 = nullptr;
if( psRG != nullptr )
{
psOriginPoint = CPLGetXMLNode( psRG, "origin.Point" );
CPLXMLNode *psOffset1 = CPLGetXMLNode( psRG, "offsetVector" );
if( psOffset1 != nullptr )
{
pszOffset1 = CPLGetXMLValue( psOffset1, "", nullptr );
pszOffset2 = CPLGetXMLValue( psOffset1->psNext, "=offsetVector",
nullptr );
}
}
/* -------------------------------------------------------------------- */
/* If we are missing any of the origin or 2 offsets then give up. */
/* -------------------------------------------------------------------- */
if( psOriginPoint == nullptr || pszOffset1 == nullptr || pszOffset2 == nullptr )
{
return FALSE;
}
/* -------------------------------------------------------------------- */
/* Extract origin location. */
/* -------------------------------------------------------------------- */
OGRPoint *poOriginGeometry = nullptr;
OGRGeometry* poGeom = reinterpret_cast<OGRGeometry*>(
OGR_G_CreateFromGMLTree( psOriginPoint ));
if( poGeom != nullptr
&& wkbFlatten(poGeom->getGeometryType()) == wkbPoint )
{
poOriginGeometry = poGeom->toPoint();
}
else
{
delete poGeom;
}
// SRS?
const char* pszSRSName = CPLGetXMLValue( psOriginPoint, "srsName", nullptr );
/* -------------------------------------------------------------------- */
/* Extract offset(s) */
/* -------------------------------------------------------------------- */
bool bSuccess = false;
char** papszOffset1Tokens =
CSLTokenizeStringComplex( pszOffset1, " ,", FALSE, FALSE );
char** papszOffset2Tokens =
CSLTokenizeStringComplex( pszOffset2, " ,", FALSE, FALSE );
if( CSLCount(papszOffset1Tokens) >= 2
&& CSLCount(papszOffset2Tokens) >= 2
&& poOriginGeometry != nullptr )
{
adfGeoTransform[0] = poOriginGeometry->getX();
adfGeoTransform[1] = CPLAtof(papszOffset1Tokens[0]);
adfGeoTransform[2] = CPLAtof(papszOffset2Tokens[0]);
adfGeoTransform[3] = poOriginGeometry->getY();
adfGeoTransform[4] = CPLAtof(papszOffset1Tokens[1]);
adfGeoTransform[5] = CPLAtof(papszOffset2Tokens[1]);
// offset from center of pixel.
adfGeoTransform[0] -= adfGeoTransform[1]*0.5;
adfGeoTransform[0] -= adfGeoTransform[2]*0.5;
adfGeoTransform[3] -= adfGeoTransform[4]*0.5;
adfGeoTransform[3] -= adfGeoTransform[5]*0.5;
bSuccess = true;