int OGRGeoconceptDataSource::LoadFile( const char *pszMode )
{
OGRGeoconceptLayer *poFile;
if( _pszExt == NULL)
{
const char* pszExtension = CPLGetExtension(_pszName);
if( !EQUAL(pszExtension,"gxt") && !EQUAL(pszExtension,"txt") )
{
return FALSE;
}
_pszExt = CPLStrdup(pszExtension);
}
CPLStrlwr( _pszExt );
if( !_pszDirectory )
_pszDirectory = CPLStrdup( CPLGetPath(_pszName) );
if( (_hGXT= Open_GCIO(_pszName,_pszExt,pszMode,_pszGCT))==NULL )
{
return FALSE;
}
/* Collect layers : */
GCExportFileMetadata* Meta= GetGCMeta_GCIO(_hGXT);
if( Meta )
{
int nC, iC, nS, iS;
if( (nC= CountMetaTypes_GCIO(Meta))>0 )
{
GCType* aClass;
GCSubType* aSubclass;
for( iC= 0; iC<nC; iC++ )
{
if( (aClass= GetMetaType_GCIO(Meta,iC)) )
{
if( (nS= CountTypeSubtypes_GCIO(aClass)) )
{
for( iS= 0; iS<nS; iS++ )
{
if( (aSubclass= GetTypeSubtype_GCIO(aClass,iS)) )
{
poFile = new OGRGeoconceptLayer;
if( poFile->Open(aSubclass) != OGRERR_NONE )
{
delete poFile;
return FALSE;
}
/* Add layer to data source layers list */
_papoLayers = (OGRGeoconceptLayer **)
CPLRealloc( _papoLayers, sizeof(OGRGeoconceptLayer *) * (_nLayers+1) );
_papoLayers[_nLayers++] = poFile;
CPLDebug("GEOCONCEPT",
"nLayers=%d - last=[%s]",
_nLayers, poFile->GetLayerDefn()->GetName());
}
}
}
}
}
}
}
return TRUE;
}
GDALDataset *IntergraphDataset::Create( const char *pszFilename,
int nXSize,
int nYSize,
int nBands,
GDALDataType eType,
char **papszOptions )
{
int nDeviceResolution = 1;
const char *pszValue;
const char *pszCompression = NULL;
pszValue = CSLFetchNameValue(papszOptions, "RESOLUTION");
if( pszValue != NULL )
nDeviceResolution = -atoi( pszValue );
char *pszExtension = CPLStrlwr(CPLStrdup(CPLGetExtension(pszFilename)));
if ( EQUAL( pszExtension, "rle" ) )
pszCompression = INGR_GetFormatName(RunLengthEncoded);
CPLFree(pszExtension);
if( eType != GDT_Byte &&
eType != GDT_Int16 &&
eType != GDT_Int32 &&
eType != GDT_UInt16 &&
eType != GDT_UInt32 &&
eType != GDT_Float32&&
eType != GDT_Float64 )
{
CPLError( CE_Failure, CPLE_AppDefined, "Data type not supported (%s)",
GDALGetDataTypeName( eType ) );
return NULL;
}
// --------------------------------------------------------------------
// Fill headers with minimun information
// --------------------------------------------------------------------
INGR_HeaderOne hHdr1;
INGR_HeaderTwoA hHdr2;
INGR_ColorTable256 hCTab;
int i;
memset(&hHdr1, 0, SIZEOF_HDR1);
memset(&hHdr2, 0, SIZEOF_HDR2_A);
memset(&hCTab, 0, SIZEOF_CTAB);
hHdr1.HeaderType.Version = INGR_HEADER_VERSION;
hHdr1.HeaderType.Type = INGR_HEADER_TYPE;
hHdr1.HeaderType.Is2Dor3D = INGR_HEADER_2D;
hHdr1.DataTypeCode = (uint16) INGR_GetFormat( eType, (pszCompression!=NULL)?pszCompression:"None" );
hHdr1.WordsToFollow = ( ( SIZEOF_HDR1 * 3 ) / 2 ) - 2;
hHdr1.ApplicationType = GenericRasterImageFile;
hHdr1.XViewOrigin = 0.0;
hHdr1.YViewOrigin = 0.0;
hHdr1.ZViewOrigin = 0.0;
hHdr1.XViewExtent = 0.0;
hHdr1.YViewExtent = 0.0;
hHdr1.ZViewExtent = 0.0;
for( i = 0; i < 15; i++ )
hHdr1.TransformationMatrix[i] = 0.0;
hHdr1.TransformationMatrix[15] = 1.0;
hHdr1.PixelsPerLine = nXSize;
hHdr1.NumberOfLines = nYSize;
hHdr1.DeviceResolution = nDeviceResolution;
hHdr1.ScanlineOrientation = UpperLeftHorizontal;
hHdr1.ScannableFlag = NoLineHeader;
hHdr1.RotationAngle = 0.0;
hHdr1.SkewAngle = 0.0;
hHdr1.DataTypeModifier = 0;
hHdr1.DesignFileName[0] = '\0';
hHdr1.DataBaseFileName[0] = '\0';
hHdr1.ParentGridFileName[0] = '\0';
hHdr1.FileDescription[0] = '\0';
hHdr1.Minimum = INGR_SetMinMax( eType, 0.0 );
hHdr1.Maximum = INGR_SetMinMax( eType, 0.0 );
hHdr1.GridFileVersion = 3;
hHdr1.Reserved[0] = 0;
hHdr1.Reserved[1] = 0;
hHdr1.Reserved[2] = 0;
hHdr2.Gain = 0;
hHdr2.OffsetThreshold = 0;
hHdr2.View1 = 0;
hHdr2.View2 = 0;
hHdr2.ViewNumber = 0;
hHdr2.Reserved2 = 0;
hHdr2.Reserved3 = 0;
hHdr2.AspectRatio = nXSize / nYSize;
hHdr2.CatenatedFilePointer = 0;
hHdr2.ColorTableType = NoColorTable;
hHdr2.NumberOfCTEntries = 0;
hHdr2.Reserved8 = 0;
for( i = 0; i < 110; i++ )
hHdr2.Reserved[i] = 0;
hHdr2.ApplicationPacketLength = 0;
hHdr2.ApplicationPacketPointer = 0;
// --------------------------------------------------------------------
// RGB Composite assumption
// --------------------------------------------------------------------
if( eType == GDT_Byte &&
nBands == 3 )
{
hHdr1.DataTypeCode = Uncompressed24bit;
}
// --------------------------------------------------------------------
// Create output file with minimum header info
// --------------------------------------------------------------------
VSILFILE *fp = VSIFOpenL( pszFilename, "wb+" );
if( fp == NULL )
{
CPLError( CE_Failure, CPLE_OpenFailed,
"Attempt to create file %s' failed.\n", pszFilename );
return NULL;
}
GByte abyBuf[MAX(SIZEOF_HDR1,SIZEOF_CTAB)];
INGR_HeaderOneMemToDisk( &hHdr1, abyBuf );
VSIFWriteL( abyBuf, 1, SIZEOF_HDR1, fp );
INGR_HeaderTwoAMemToDisk( &hHdr2, abyBuf );
VSIFWriteL( abyBuf, 1, SIZEOF_HDR2_A, fp );
unsigned int n = 0;
for( i = 0; i < 256; i++ )
{
STRC2BUF( abyBuf, n, hCTab.Entry[i].v_red );
STRC2BUF( abyBuf, n, hCTab.Entry[i].v_green );
STRC2BUF( abyBuf, n, hCTab.Entry[i].v_blue );
}
VSIFWriteL( abyBuf, 1, SIZEOF_CTAB, fp );
VSIFCloseL( fp );
// --------------------------------------------------------------------
// Returns a new IntergraphDataset from the created file
// --------------------------------------------------------------------
return ( IntergraphDataset * ) GDALOpen( pszFilename, GA_Update );
}