GDALDataset *DTEDDataset::Open( GDALOpenInfo * poOpenInfo )
{
int i;
DTEDInfo *psDTED;
if (!Identify(poOpenInfo) || poOpenInfo->fpL == NULL )
return NULL;
/* -------------------------------------------------------------------- */
/* Try opening the dataset. */
/* -------------------------------------------------------------------- */
VSILFILE* fp = poOpenInfo->fpL;
poOpenInfo->fpL = NULL;
psDTED = DTEDOpenEx( fp, poOpenInfo->pszFilename,
(poOpenInfo->eAccess == GA_Update) ? "rb+" : "rb", TRUE );
if( psDTED == NULL )
return( NULL );
/* -------------------------------------------------------------------- */
/* Create a corresponding GDALDataset. */
/* -------------------------------------------------------------------- */
DTEDDataset *poDS;
poDS = new DTEDDataset();
poDS->SetFileName(poOpenInfo->pszFilename);
poDS->eAccess = poOpenInfo->eAccess;
poDS->psDTED = psDTED;
/* -------------------------------------------------------------------- */
/* Capture some information from the file that is of interest. */
/* -------------------------------------------------------------------- */
poDS->nRasterXSize = psDTED->nXSize;
poDS->nRasterYSize = psDTED->nYSize;
if (!GDALCheckDatasetDimensions(poDS->nRasterXSize, poDS->nRasterYSize))
{
delete poDS;
return NULL;
}
/* -------------------------------------------------------------------- */
/* Create band information objects. */
/* -------------------------------------------------------------------- */
poDS->nBands = 1;
for( i = 0; i < poDS->nBands; i++ )
poDS->SetBand( i+1, new DTEDRasterBand( poDS, i+1 ) );
/* -------------------------------------------------------------------- */
/* Collect any metadata available. */
/* -------------------------------------------------------------------- */
char *pszValue;
pszValue = DTEDGetMetadata( psDTED, DTEDMD_VERTACCURACY_UHL );
poDS->SetMetadataItem( "DTED_VerticalAccuracy_UHL", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_VERTACCURACY_ACC );
poDS->SetMetadataItem( "DTED_VerticalAccuracy_ACC", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_SECURITYCODE_UHL );
poDS->SetMetadataItem( "DTED_SecurityCode_UHL", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_SECURITYCODE_DSI );
poDS->SetMetadataItem( "DTED_SecurityCode_DSI", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_UNIQUEREF_UHL );
poDS->SetMetadataItem( "DTED_UniqueRef_UHL", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_UNIQUEREF_DSI );
poDS->SetMetadataItem( "DTED_UniqueRef_DSI", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_DATA_EDITION );
poDS->SetMetadataItem( "DTED_DataEdition", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_MATCHMERGE_VERSION );
poDS->SetMetadataItem( "DTED_MatchMergeVersion", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_MAINT_DATE );
poDS->SetMetadataItem( "DTED_MaintenanceDate", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_MATCHMERGE_DATE );
poDS->SetMetadataItem( "DTED_MatchMergeDate", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_MAINT_DESCRIPTION );
poDS->SetMetadataItem( "DTED_MaintenanceDescription", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_PRODUCER );
poDS->SetMetadataItem( "DTED_Producer", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_VERTDATUM );
poDS->SetMetadataItem( "DTED_VerticalDatum", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_HORIZDATUM );
poDS->SetMetadataItem( "DTED_HorizontalDatum", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_DIGITIZING_SYS );
poDS->SetMetadataItem( "DTED_DigitizingSystem", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_COMPILATION_DATE );
poDS->SetMetadataItem( "DTED_CompilationDate", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_HORIZACCURACY );
poDS->SetMetadataItem( "DTED_HorizontalAccuracy", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_REL_HORIZACCURACY );
poDS->SetMetadataItem( "DTED_RelHorizontalAccuracy", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_REL_VERTACCURACY );
poDS->SetMetadataItem( "DTED_RelVerticalAccuracy", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_ORIGINLAT );
poDS->SetMetadataItem( "DTED_OriginLatitude", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_ORIGINLONG );
poDS->SetMetadataItem( "DTED_OriginLongitude", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_NIMA_DESIGNATOR );
poDS->SetMetadataItem( "DTED_NimaDesignator", pszValue );
CPLFree( pszValue );
pszValue = DTEDGetMetadata( psDTED, DTEDMD_PARTIALCELL_DSI );
poDS->SetMetadataItem( "DTED_PartialCellIndicator", pszValue );
CPLFree( pszValue );
poDS->SetMetadataItem( GDALMD_AREA_OR_POINT, GDALMD_AOP_POINT );
/* -------------------------------------------------------------------- */
/* Initialize any PAM information. */
/* -------------------------------------------------------------------- */
poDS->SetDescription( poOpenInfo->pszFilename );
poDS->TryLoadXML( poOpenInfo->GetSiblingFiles() );
// if no SR in xml, try aux
const char* pszPrj = poDS->GDALPamDataset::GetProjectionRef();
if( !pszPrj || strlen(pszPrj) == 0 )
{
int bTryAux = TRUE;
if( poOpenInfo->GetSiblingFiles() != NULL &&
CSLFindString(poOpenInfo->GetSiblingFiles(), CPLResetExtension(CPLGetFilename(poOpenInfo->pszFilename), "aux")) < 0 &&
CSLFindString(poOpenInfo->GetSiblingFiles(), CPLSPrintf("%s.aux", CPLGetFilename(poOpenInfo->pszFilename))) < 0 )
bTryAux = FALSE;
if( bTryAux )
{
GDALDataset* poAuxDS = GDALFindAssociatedAuxFile( poOpenInfo->pszFilename, GA_ReadOnly, poDS );
if( poAuxDS )
{
pszPrj = poAuxDS->GetProjectionRef();
if( pszPrj && strlen(pszPrj) > 0 )
{
CPLFree( poDS->pszProjection );
poDS->pszProjection = CPLStrdup(pszPrj);
}
GDALClose( poAuxDS );
}
}
}
/* -------------------------------------------------------------------- */
/* Support overviews. */
/* -------------------------------------------------------------------- */
poDS->oOvManager.Initialize( poDS, poOpenInfo->pszFilename,
poOpenInfo->GetSiblingFiles() );
return( poDS );
}
void GDALDefaultOverviews::OverviewScan()
{
if( bCheckedForOverviews || poDS == NULL )
return;
bCheckedForOverviews = true;
CPLDebug( "GDAL", "GDALDefaultOverviews::OverviewScan()" );
/* -------------------------------------------------------------------- */
/* Open overview dataset if it exists. */
/* -------------------------------------------------------------------- */
if( pszInitName == NULL )
pszInitName = CPLStrdup(poDS->GetDescription());
if( !EQUAL(pszInitName,":::VIRTUAL:::") &&
GDALCanFileAcceptSidecarFile(pszInitName) )
{
if( bInitNameIsOVR )
osOvrFilename = pszInitName;
else
osOvrFilename.Printf( "%s.ovr", pszInitName );
std::vector<char> achOvrFilename;
achOvrFilename.resize(osOvrFilename.size() + 1);
memcpy(&(achOvrFilename[0]),
osOvrFilename.c_str(),
osOvrFilename.size() + 1);
bool bExists = CPL_TO_BOOL(
CPLCheckForFile( &achOvrFilename[0], papszInitSiblingFiles ) );
osOvrFilename = &achOvrFilename[0];
#if !defined(WIN32)
if( !bInitNameIsOVR && !bExists && !papszInitSiblingFiles )
{
osOvrFilename.Printf( "%s.OVR", pszInitName );
memcpy(&(achOvrFilename[0]),
osOvrFilename.c_str(),
osOvrFilename.size() + 1);
bExists = CPL_TO_BOOL(
CPLCheckForFile( &achOvrFilename[0], papszInitSiblingFiles ) );
osOvrFilename = &achOvrFilename[0];
if( !bExists )
osOvrFilename.Printf( "%s.ovr", pszInitName );
}
#endif
if( bExists )
{
poODS = static_cast<GDALDataset *>( GDALOpenEx(
osOvrFilename,
GDAL_OF_RASTER |
(poDS->GetAccess() == GA_Update ? GDAL_OF_UPDATE : 0),
NULL, NULL, papszInitSiblingFiles ) );
}
}
/* -------------------------------------------------------------------- */
/* We didn't find that, so try and find a corresponding aux */
/* file. Check that we are the dependent file of the aux */
/* file. */
/* */
/* We only use the .aux file for overviews if they already have */
/* overviews existing, or if USE_RRD is set true. */
/* -------------------------------------------------------------------- */
if( !poODS && !EQUAL(pszInitName,":::VIRTUAL:::") &&
GDALCanFileAcceptSidecarFile(pszInitName) )
{
bool bTryFindAssociatedAuxFile = true;
if( papszInitSiblingFiles )
{
CPLString osAuxFilename = CPLResetExtension( pszInitName, "aux");
int iSibling = CSLFindString( papszInitSiblingFiles,
CPLGetFilename(osAuxFilename) );
if( iSibling < 0 )
{
osAuxFilename = pszInitName;
osAuxFilename += ".aux";
iSibling = CSLFindString( papszInitSiblingFiles,
CPLGetFilename(osAuxFilename) );
if( iSibling < 0 )
bTryFindAssociatedAuxFile = false;
}
}
if( bTryFindAssociatedAuxFile )
{
poODS = GDALFindAssociatedAuxFile( pszInitName, poDS->GetAccess(),
poDS );
}
if( poODS )
{
const bool bUseRRD = CPLTestBool(CPLGetConfigOption("USE_RRD","NO"));
bOvrIsAux = true;
if( GetOverviewCount(1) == 0 && !bUseRRD )
{
bOvrIsAux = false;
GDALClose( poODS );
poODS = NULL;
}
else
{
osOvrFilename = poODS->GetDescription();
}
}
}
/* -------------------------------------------------------------------- */
/* If we still don't have an overview, check to see if we have */
/* overview metadata referencing a remote (i.e. proxy) or local */
/* subdataset overview dataset. */
/* -------------------------------------------------------------------- */
if( poODS == NULL )
{
const char *pszProxyOvrFilename =
poDS->GetMetadataItem( "OVERVIEW_FILE", "OVERVIEWS" );
if( pszProxyOvrFilename != NULL )
{
if( STARTS_WITH_CI(pszProxyOvrFilename, ":::BASE:::") )
{
const CPLString osPath = CPLGetPath(poDS->GetDescription());
osOvrFilename =
CPLFormFilename( osPath, pszProxyOvrFilename+10, NULL );
}
else
{
osOvrFilename = pszProxyOvrFilename;
}
CPLPushErrorHandler(CPLQuietErrorHandler);
poODS = static_cast<GDALDataset *>(GDALOpen(osOvrFilename, poDS->GetAccess()));
CPLPopErrorHandler();
}
}
/* -------------------------------------------------------------------- */
/* If we have an overview dataset, then mark all the overviews */
/* with the base dataset Used later for finding overviews */
/* masks. Uggg. */
/* -------------------------------------------------------------------- */
if( poODS )
{
const int nOverviewCount = GetOverviewCount(1);
for( int iOver = 0; iOver < nOverviewCount; iOver++ )
{
GDALRasterBand * const poBand = GetOverview( 1, iOver );
GDALDataset * const poOverDS = poBand != NULL ?
poBand->GetDataset() : NULL;
if( poOverDS != NULL )
{
poOverDS->oOvManager.poBaseDS = poDS;
poOverDS->oOvManager.poDS = poOverDS;
}
}
}
}
void GDALDefaultOverviews::OverviewScan()
{
if( bCheckedForOverviews || poDS == NULL )
return;
bCheckedForOverviews = true;
CPLDebug( "GDAL", "GDALDefaultOverviews::OverviewScan()" );
/* -------------------------------------------------------------------- */
/* Open overview dataset if it exists. */
/* -------------------------------------------------------------------- */
int bExists;
if( pszInitName == NULL )
pszInitName = CPLStrdup(poDS->GetDescription());
if( !EQUAL(pszInitName,":::VIRTUAL:::") )
{
if( bInitNameIsOVR )
osOvrFilename = pszInitName;
else
osOvrFilename.Printf( "%s.ovr", pszInitName );
bExists = CPLCheckForFile( (char *) osOvrFilename.c_str(),
papszInitSiblingFiles );
#if !defined(WIN32)
if( !bInitNameIsOVR && !bExists && !papszInitSiblingFiles )
{
osOvrFilename.Printf( "%s.OVR", pszInitName );
bExists = CPLCheckForFile( (char *) osOvrFilename.c_str(),
papszInitSiblingFiles );
if( !bExists )
osOvrFilename.Printf( "%s.ovr", pszInitName );
}
#endif
if( bExists )
{
GDALOpenInfo oOpenInfo(osOvrFilename, poDS->GetAccess(),
papszInitSiblingFiles);
poODS = (GDALDataset*) GDALOpenInternal( oOpenInfo, NULL );
}
}
/* -------------------------------------------------------------------- */
/* We didn't find that, so try and find a corresponding aux */
/* file. Check that we are the dependent file of the aux */
/* file. */
/* */
/* We only use the .aux file for overviews if they already have */
/* overviews existing, or if USE_RRD is set true. */
/* -------------------------------------------------------------------- */
if( !poODS && !EQUAL(pszInitName,":::VIRTUAL:::") )
{
int bTryFindAssociatedAuxFile = TRUE;
if( papszInitSiblingFiles )
{
CPLString osAuxFilename = CPLResetExtension( pszInitName, "aux");
int iSibling = CSLFindString( papszInitSiblingFiles,
CPLGetFilename(osAuxFilename) );
if( iSibling < 0 )
{
osAuxFilename = pszInitName;
osAuxFilename += ".aux";
iSibling = CSLFindString( papszInitSiblingFiles,
CPLGetFilename(osAuxFilename) );
if( iSibling < 0 )
bTryFindAssociatedAuxFile = FALSE;
}
}
if (bTryFindAssociatedAuxFile)
{
poODS = GDALFindAssociatedAuxFile( pszInitName, poDS->GetAccess(),
poDS );
}
if( poODS )
{
int bUseRRD = CSLTestBoolean(CPLGetConfigOption("USE_RRD","NO"));
bOvrIsAux = TRUE;
if( GetOverviewCount(1) == 0 && !bUseRRD )
{
bOvrIsAux = FALSE;
GDALClose( poODS );
poODS = NULL;
}
else
{
osOvrFilename = poODS->GetDescription();
}
}
}
/* -------------------------------------------------------------------- */
/* If we still don't have an overview, check to see if we have */
/* overview metadata referencing a remote (ie. proxy) or local */
/* subdataset overview dataset. */
/* -------------------------------------------------------------------- */
if( poODS == NULL )
{
const char *pszProxyOvrFilename =
poDS->GetMetadataItem( "OVERVIEW_FILE", "OVERVIEWS" );
if( pszProxyOvrFilename != NULL )
{
if( EQUALN(pszProxyOvrFilename,":::BASE:::",10) )
{
CPLString osPath = CPLGetPath(poDS->GetDescription());
osOvrFilename =
CPLFormFilename( osPath, pszProxyOvrFilename+10, NULL );
}
else
osOvrFilename = pszProxyOvrFilename;
CPLPushErrorHandler(CPLQuietErrorHandler);
poODS = (GDALDataset *) GDALOpen(osOvrFilename,poDS->GetAccess());
CPLPopErrorHandler();
}
}
/* -------------------------------------------------------------------- */
/* If we have an overview dataset, then mark all the overviews */
/* with the base dataset Used later for finding overviews */
/* masks. Uggg. */
/* -------------------------------------------------------------------- */
if( poODS )
{
int nOverviewCount = GetOverviewCount(1);
int iOver;
for( iOver = 0; iOver < nOverviewCount; iOver++ )
{
GDALRasterBand *poBand = GetOverview( 1, iOver );
GDALDataset *poOverDS = NULL;
if( poBand != NULL )
poOverDS = poBand->GetDataset();
if( poOverDS != NULL )
{
poOverDS->oOvManager.poBaseDS = poDS;
poOverDS->oOvManager.poDS = poOverDS;
}
}
}
}
GDALDataset *ERSDataset::Open( GDALOpenInfo * poOpenInfo )
{
/* -------------------------------------------------------------------- */
/* We assume the user selects the .ers file. */
/* -------------------------------------------------------------------- */
if( poOpenInfo->nHeaderBytes > 15
&& EQUALN((const char *) poOpenInfo->pabyHeader,"Algorithm Begin",15) )
{
CPLError( CE_Failure, CPLE_OpenFailed,
"%s appears to be an algorithm ERS file, which is not currently supported.",
poOpenInfo->pszFilename );
return NULL;
}
/* -------------------------------------------------------------------- */
/* We assume the user selects the .ers file. */
/* -------------------------------------------------------------------- */
if( poOpenInfo->nHeaderBytes < 15
|| !EQUALN((const char *) poOpenInfo->pabyHeader,"DatasetHeader ",14) )
return NULL;
/* -------------------------------------------------------------------- */
/* Open the .ers file, and read the first line. */
/* -------------------------------------------------------------------- */
VSILFILE *fpERS = VSIFOpenL( poOpenInfo->pszFilename, "rb" );
if( fpERS == NULL )
return NULL;
CPLReadLineL( fpERS );
/* -------------------------------------------------------------------- */
/* Now ingest the rest of the file as a tree of header nodes. */
/* -------------------------------------------------------------------- */
ERSHdrNode *poHeader = new ERSHdrNode();
if( !poHeader->ParseChildren( fpERS ) )
{
delete poHeader;
VSIFCloseL( fpERS );
return NULL;
}
VSIFCloseL( fpERS );
/* -------------------------------------------------------------------- */
/* Do we have the minimum required information from this header? */
/* -------------------------------------------------------------------- */
if( poHeader->Find( "RasterInfo.NrOfLines" ) == NULL
|| poHeader->Find( "RasterInfo.NrOfCellsPerLine" ) == NULL
|| poHeader->Find( "RasterInfo.NrOfBands" ) == NULL )
{
if( poHeader->FindNode( "Algorithm" ) != NULL )
{
CPLError( CE_Failure, CPLE_OpenFailed,
"%s appears to be an algorithm ERS file, which is not currently supported.",
poOpenInfo->pszFilename );
}
delete poHeader;
return NULL;
}
/* -------------------------------------------------------------------- */
/* Create a corresponding GDALDataset. */
/* -------------------------------------------------------------------- */
ERSDataset *poDS;
poDS = new ERSDataset();
poDS->poHeader = poHeader;
poDS->eAccess = poOpenInfo->eAccess;
/* -------------------------------------------------------------------- */
/* Capture some information from the file that is of interest. */
/* -------------------------------------------------------------------- */
int nBands = atoi(poHeader->Find( "RasterInfo.NrOfBands" ));
poDS->nRasterXSize = atoi(poHeader->Find( "RasterInfo.NrOfCellsPerLine" ));
poDS->nRasterYSize = atoi(poHeader->Find( "RasterInfo.NrOfLines" ));
if (!GDALCheckDatasetDimensions(poDS->nRasterXSize, poDS->nRasterYSize) ||
!GDALCheckBandCount(nBands, FALSE))
{
delete poDS;
return NULL;
}
/* -------------------------------------------------------------------- */
/* Get the HeaderOffset if it exists in the header */
/* -------------------------------------------------------------------- */
GIntBig nHeaderOffset = 0;
if( poHeader->Find( "HeaderOffset" ) != NULL )
{
nHeaderOffset = atoi(poHeader->Find( "HeaderOffset" ));
}
/* -------------------------------------------------------------------- */
/* Establish the data type. */
/* -------------------------------------------------------------------- */
GDALDataType eType;
CPLString osCellType = poHeader->Find( "RasterInfo.CellType",
"Unsigned8BitInteger" );
if( EQUAL(osCellType,"Unsigned8BitInteger") )
eType = GDT_Byte;
else if( EQUAL(osCellType,"Signed8BitInteger") )
eType = GDT_Byte;
else if( EQUAL(osCellType,"Unsigned16BitInteger") )
eType = GDT_UInt16;
else if( EQUAL(osCellType,"Signed16BitInteger") )
eType = GDT_Int16;
else if( EQUAL(osCellType,"Unsigned32BitInteger") )
eType = GDT_UInt32;
else if( EQUAL(osCellType,"Signed32BitInteger") )
eType = GDT_Int32;
else if( EQUAL(osCellType,"IEEE4ByteReal") )
eType = GDT_Float32;
else if( EQUAL(osCellType,"IEEE8ByteReal") )
eType = GDT_Float64;
else
{
CPLDebug( "ERS", "Unknown CellType '%s'", osCellType.c_str() );
eType = GDT_Byte;
}
/* -------------------------------------------------------------------- */
/* Pick up the word order. */
/* -------------------------------------------------------------------- */
int bNative;
#ifdef CPL_LSB
bNative = EQUAL(poHeader->Find( "ByteOrder", "LSBFirst" ),
"LSBFirst");
#else
bNative = EQUAL(poHeader->Find( "ByteOrder", "MSBFirst" ),
"MSBFirst");
#endif
/* -------------------------------------------------------------------- */
/* Figure out the name of the target file. */
/* -------------------------------------------------------------------- */
CPLString osPath = CPLGetPath( poOpenInfo->pszFilename );
CPLString osDataFile = poHeader->Find( "DataFile", "" );
CPLString osDataFilePath;
if( osDataFile.length() == 0 ) // just strip off extension.
{
osDataFile = CPLGetFilename( poOpenInfo->pszFilename );
osDataFile = osDataFile.substr( 0, osDataFile.find_last_of('.') );
}
osDataFilePath = CPLFormFilename( osPath, osDataFile, NULL );
/* -------------------------------------------------------------------- */
/* DataSetType = Translated files are links to things like ecw */
/* files. */
/* -------------------------------------------------------------------- */
if( EQUAL(poHeader->Find("DataSetType",""),"Translated") )
{
poDS->poDepFile = (GDALDataset *)
GDALOpenShared( osDataFilePath, poOpenInfo->eAccess );
if( poDS->poDepFile != NULL
&& poDS->poDepFile->GetRasterCount() >= nBands )
{
int iBand;
for( iBand = 0; iBand < nBands; iBand++ )
{
// Assume pixel interleaved.
poDS->SetBand( iBand+1,
poDS->poDepFile->GetRasterBand( iBand+1 ) );
}
}
}
/* ==================================================================== */
/* While ERStorage indicates a raw file. */
/* ==================================================================== */
else if( EQUAL(poHeader->Find("DataSetType",""),"ERStorage") )
{
// Open data file.
if( poOpenInfo->eAccess == GA_Update )
poDS->fpImage = VSIFOpenL( osDataFilePath, "r+" );
else
poDS->fpImage = VSIFOpenL( osDataFilePath, "r" );
poDS->osRawFilename = osDataFilePath;
if( poDS->fpImage != NULL )
{
int iWordSize = GDALGetDataTypeSize(eType) / 8;
int iBand;
for( iBand = 0; iBand < nBands; iBand++ )
{
// Assume pixel interleaved.
poDS->SetBand(
iBand+1,
new RawRasterBand( poDS, iBand+1, poDS->fpImage,
nHeaderOffset
+ iWordSize * iBand * poDS->nRasterXSize,
iWordSize,
iWordSize * nBands * poDS->nRasterXSize,
eType, bNative, TRUE ));
if( EQUAL(osCellType,"Signed8BitInteger") )
poDS->GetRasterBand(iBand+1)->
SetMetadataItem( "PIXELTYPE", "SIGNEDBYTE",
"IMAGE_STRUCTURE" );
}
}
}
/* -------------------------------------------------------------------- */
/* Otherwise we have an error! */
/* -------------------------------------------------------------------- */
if( poDS->nBands == 0 )
{
delete poDS;
return NULL;
}
/* -------------------------------------------------------------------- */
/* Look for band descriptions. */
/* -------------------------------------------------------------------- */
int iChild, iBand = 0;
ERSHdrNode *poRI = poHeader->FindNode( "RasterInfo" );
for( iChild = 0;
poRI != NULL && iChild < poRI->nItemCount && iBand < poDS->nBands;
iChild++ )
{
if( poRI->papoItemChild[iChild] != NULL
&& EQUAL(poRI->papszItemName[iChild],"BandId") )
{
const char *pszValue =
poRI->papoItemChild[iChild]->Find( "Value", NULL );
iBand++;
if( pszValue )
{
CPLPushErrorHandler( CPLQuietErrorHandler );
poDS->GetRasterBand( iBand )->SetDescription( pszValue );
CPLPopErrorHandler();
}
pszValue = poRI->papoItemChild[iChild]->Find( "Units", NULL );
if ( pszValue )
{
CPLPushErrorHandler( CPLQuietErrorHandler );
poDS->GetRasterBand( iBand )->SetUnitType( pszValue );
CPLPopErrorHandler();
}
}
}
/* -------------------------------------------------------------------- */
/* Look for projection. */
/* -------------------------------------------------------------------- */
OGRSpatialReference oSRS;
CPLString osProjection = poHeader->Find( "CoordinateSpace.Projection",
"RAW" );
CPLString osDatum = poHeader->Find( "CoordinateSpace.Datum", "WGS84" );
CPLString osUnits = poHeader->Find( "CoordinateSpace.Units", "METERS" );
oSRS.importFromERM( osProjection, osDatum, osUnits );
CPLFree( poDS->pszProjection );
oSRS.exportToWkt( &(poDS->pszProjection) );
/* -------------------------------------------------------------------- */
/* Look for the geotransform. */
/* -------------------------------------------------------------------- */
if( poHeader->Find( "RasterInfo.RegistrationCoord.Eastings", NULL )
&& poHeader->Find( "RasterInfo.CellInfo.Xdimension", NULL ) )
{
poDS->bGotTransform = TRUE;
poDS->adfGeoTransform[0] = CPLAtof(
poHeader->Find( "RasterInfo.RegistrationCoord.Eastings", "" ));
poDS->adfGeoTransform[1] = CPLAtof(
poHeader->Find( "RasterInfo.CellInfo.Xdimension", "" ));
poDS->adfGeoTransform[2] = 0.0;
poDS->adfGeoTransform[3] = CPLAtof(
poHeader->Find( "RasterInfo.RegistrationCoord.Northings", "" ));
poDS->adfGeoTransform[4] = 0.0;
poDS->adfGeoTransform[5] = -CPLAtof(
poHeader->Find( "RasterInfo.CellInfo.Ydimension", "" ));
}
else if( poHeader->Find( "RasterInfo.RegistrationCoord.Latitude", NULL )
&& poHeader->Find( "RasterInfo.CellInfo.Xdimension", NULL ) )
{
poDS->bGotTransform = TRUE;
poDS->adfGeoTransform[0] = ERSDMS2Dec(
poHeader->Find( "RasterInfo.RegistrationCoord.Longitude", "" ));
poDS->adfGeoTransform[1] = CPLAtof(
poHeader->Find( "RasterInfo.CellInfo.Xdimension", "" ));
poDS->adfGeoTransform[2] = 0.0;
poDS->adfGeoTransform[3] = ERSDMS2Dec(
poHeader->Find( "RasterInfo.RegistrationCoord.Latitude", "" ));
poDS->adfGeoTransform[4] = 0.0;
poDS->adfGeoTransform[5] = -CPLAtof(
poHeader->Find( "RasterInfo.CellInfo.Ydimension", "" ));
}
/* -------------------------------------------------------------------- */
/* Adjust if we have a registration cell. */
/* -------------------------------------------------------------------- */
int iCellX = atoi(poHeader->Find("RasterInfo.RegistrationCellX", "1"));
int iCellY = atoi(poHeader->Find("RasterInfo.RegistrationCellY", "1"));
if( poDS->bGotTransform )
{
poDS->adfGeoTransform[0] -=
(iCellX-1) * poDS->adfGeoTransform[1]
+ (iCellY-1) * poDS->adfGeoTransform[2];
poDS->adfGeoTransform[3] -=
(iCellX-1) * poDS->adfGeoTransform[4]
+ (iCellY-1) * poDS->adfGeoTransform[5];
}
/* -------------------------------------------------------------------- */
/* Check for null values. */
/* -------------------------------------------------------------------- */
if( poHeader->Find( "RasterInfo.NullCellValue", NULL ) )
{
CPLPushErrorHandler( CPLQuietErrorHandler );
for( iBand = 1; iBand <= poDS->nBands; iBand++ )
poDS->GetRasterBand(iBand)->SetNoDataValue(
CPLAtofM(poHeader->Find( "RasterInfo.NullCellValue" )) );
CPLPopErrorHandler();
}
/* -------------------------------------------------------------------- */
/* Do we have an "All" region? */
/* -------------------------------------------------------------------- */
ERSHdrNode *poAll = NULL;
for( iChild = 0;
poRI != NULL && iChild < poRI->nItemCount;
iChild++ )
{
if( poRI->papoItemChild[iChild] != NULL
&& EQUAL(poRI->papszItemName[iChild],"RegionInfo") )
{
if( EQUAL(poRI->papoItemChild[iChild]->Find("RegionName",""),
"All") )
poAll = poRI->papoItemChild[iChild];
}
}
/* -------------------------------------------------------------------- */
/* Do we have statistics? */
/* -------------------------------------------------------------------- */
if( poAll && poAll->FindNode( "Stats" ) )
{
CPLPushErrorHandler( CPLQuietErrorHandler );
for( iBand = 1; iBand <= poDS->nBands; iBand++ )
{
const char *pszValue =
poAll->FindElem( "Stats.MinimumValue", iBand-1 );
if( pszValue )
poDS->GetRasterBand(iBand)->SetMetadataItem(
"STATISTICS_MINIMUM", pszValue );
pszValue = poAll->FindElem( "Stats.MaximumValue", iBand-1 );
if( pszValue )
poDS->GetRasterBand(iBand)->SetMetadataItem(
"STATISTICS_MAXIMUM", pszValue );
pszValue = poAll->FindElem( "Stats.MeanValue", iBand-1 );
if( pszValue )
poDS->GetRasterBand(iBand)->SetMetadataItem(
"STATISTICS_MEAN", pszValue );
pszValue = poAll->FindElem( "Stats.MedianValue", iBand-1 );
if( pszValue )
poDS->GetRasterBand(iBand)->SetMetadataItem(
"STATISTICS_MEDIAN", pszValue );
}
CPLPopErrorHandler();
}
/* -------------------------------------------------------------------- */
/* Do we have GCPs. */
/* -------------------------------------------------------------------- */
if( poHeader->FindNode( "RasterInfo.WarpControl" ) )
poDS->ReadGCPs();
/* -------------------------------------------------------------------- */
/* Initialize any PAM information. */
/* -------------------------------------------------------------------- */
poDS->SetDescription( poOpenInfo->pszFilename );
poDS->TryLoadXML();
// if no SR in xml, try aux
const char* pszPrj = poDS->GDALPamDataset::GetProjectionRef();
if( !pszPrj || strlen(pszPrj) == 0 )
{
// try aux
GDALDataset* poAuxDS = GDALFindAssociatedAuxFile( poOpenInfo->pszFilename, GA_ReadOnly, poDS );
if( poAuxDS )
{
pszPrj = poAuxDS->GetProjectionRef();
if( pszPrj && strlen(pszPrj) > 0 )
{
CPLFree( poDS->pszProjection );
poDS->pszProjection = CPLStrdup(pszPrj);
}
GDALClose( poAuxDS );
}
}
/* -------------------------------------------------------------------- */
/* Check for overviews. */
/* -------------------------------------------------------------------- */
poDS->oOvManager.Initialize( poDS, poOpenInfo->pszFilename );
return( poDS );
}
CPLErr GDALPamDataset::TryLoadAux()
{
/* -------------------------------------------------------------------- */
/* Initialize PAM. */
/* -------------------------------------------------------------------- */
PamInitialize();
if( psPam == NULL )
return CE_None;
/* -------------------------------------------------------------------- */
/* What is the name of the physical file we are referencing? */
/* We allow an override via the psPam->pszPhysicalFile item. */
/* -------------------------------------------------------------------- */
const char *pszPhysicalFile = psPam->osPhysicalFilename;
if( strlen(pszPhysicalFile) == 0 && GetDescription() != NULL )
pszPhysicalFile = GetDescription();
if( strlen(pszPhysicalFile) == 0 )
return CE_None;
/* -------------------------------------------------------------------- */
/* Try to open .aux file. */
/* -------------------------------------------------------------------- */
GDALDataset *poAuxDS = GDALFindAssociatedAuxFile( pszPhysicalFile,
GA_ReadOnly, this );
if( poAuxDS == NULL )
return CE_None;
/* -------------------------------------------------------------------- */
/* Do we have an SRS on the aux file? */
/* -------------------------------------------------------------------- */
if( strlen(poAuxDS->GetProjectionRef()) > 0 )
GDALPamDataset::SetProjection( poAuxDS->GetProjectionRef() );
/* -------------------------------------------------------------------- */
/* Geotransform. */
/* -------------------------------------------------------------------- */
if( poAuxDS->GetGeoTransform( psPam->adfGeoTransform ) == CE_None )
psPam->bHaveGeoTransform = TRUE;
/* -------------------------------------------------------------------- */
/* GCPs */
/* -------------------------------------------------------------------- */
if( poAuxDS->GetGCPCount() > 0 )
{
psPam->nGCPCount = poAuxDS->GetGCPCount();
psPam->pasGCPList = GDALDuplicateGCPs( psPam->nGCPCount,
poAuxDS->GetGCPs() );
}
/* -------------------------------------------------------------------- */
/* Apply metadata. We likely ought to be merging this in rather */
/* than overwriting everything that was there. */
/* -------------------------------------------------------------------- */
char **papszMD = poAuxDS->GetMetadata();
if( CSLCount(papszMD) > 0 )
{
char **papszMerged =
CSLMerge( CSLDuplicate(GetMetadata()), papszMD );
GDALPamDataset::SetMetadata( papszMerged );
CSLDestroy( papszMerged );
}
papszMD = poAuxDS->GetMetadata("XFORMS");
if( CSLCount(papszMD) > 0 )
{
char **papszMerged =
CSLMerge( CSLDuplicate(GetMetadata("XFORMS")), papszMD );
GDALPamDataset::SetMetadata( papszMerged, "XFORMS" );
CSLDestroy( papszMerged );
}
/* ==================================================================== */
/* Process bands. */
/* ==================================================================== */
int iBand;
for( iBand = 0; iBand < poAuxDS->GetRasterCount(); iBand++ )
{
if( iBand >= GetRasterCount() )
break;
GDALRasterBand *poAuxBand = poAuxDS->GetRasterBand( iBand+1 );
GDALRasterBand *poBand = GetRasterBand( iBand+1 );
papszMD = poAuxBand->GetMetadata();
if( CSLCount(papszMD) > 0 )
{
char **papszMerged =
CSLMerge( CSLDuplicate(poBand->GetMetadata()), papszMD );
poBand->SetMetadata( papszMerged );
CSLDestroy( papszMerged );
}
if( poAuxBand->GetCategoryNames() != NULL )
poBand->SetCategoryNames( poAuxBand->GetCategoryNames() );
if( poAuxBand->GetColorTable() != NULL
&& poBand->GetColorTable() == NULL )
poBand->SetColorTable( poAuxBand->GetColorTable() );
// histograms?
double dfMin, dfMax;
int nBuckets, *panHistogram=NULL;
if( poAuxBand->GetDefaultHistogram( &dfMin, &dfMax,
&nBuckets, &panHistogram,
FALSE, NULL, NULL ) == CE_None )
{
poBand->SetDefaultHistogram( dfMin, dfMax, nBuckets,
panHistogram );
CPLFree( panHistogram );
}
// RAT
if( poAuxBand->GetDefaultRAT() != NULL )
poBand->SetDefaultRAT( poAuxBand->GetDefaultRAT() );
// NoData
int bSuccess = FALSE;
double dfNoDataValue = poAuxBand->GetNoDataValue( &bSuccess );
if( bSuccess )
poBand->SetNoDataValue( dfNoDataValue );
}
GDALClose( poAuxDS );
/* -------------------------------------------------------------------- */
/* Mark PAM info as clean. */
/* -------------------------------------------------------------------- */
nPamFlags &= ~GPF_DIRTY;
return CE_Failure;
}