// static function- pointer set in driver
GDALDataset *KEADataset::Create( const char * pszFilename,
int nXSize, int nYSize, int nBands,
GDALDataType eType,
char ** papszParmList )
{
H5::H5File *keaImgH5File = CreateLL( pszFilename, nXSize, nYSize, nBands,
eType, papszParmList );
if( keaImgH5File == NULL )
return NULL;
bool bThematic =
CPLTestBool(CSLFetchNameValueDef( papszParmList, "THEMATIC", "FALSE" ));
try
{
// create our dataset object
KEADataset *pDataset = new KEADataset( keaImgH5File, GA_Update );
pDataset->SetDescription( pszFilename );
// set all to thematic if asked
if( bThematic )
{
for( int nCount = 0; nCount < nBands; nCount++ )
{
GDALRasterBand *pBand = pDataset->GetRasterBand(nCount+1);
pBand->SetMetadataItem("LAYER_TYPE", "thematic");
}
}
return pDataset;
}
catch (kealib::KEAIOException &e)
{
CPLError( CE_Failure, CPLE_OpenFailed,
"Attempt to create file `%s' failed. Error: %s\n",
pszFilename, e.what() );
return NULL;
}
}
// static function - pointer set in driver
GDALDataset *KEADataset::Open( GDALOpenInfo * poOpenInfo )
{
if( Identify( poOpenInfo ) )
{
try
{
// try and open it in the appropriate mode
H5::H5File *pH5File;
if( poOpenInfo->eAccess == GA_ReadOnly )
{
pH5File = kealib::KEAImageIO::openKeaH5RDOnly( poOpenInfo->pszFilename );
}
else
{
pH5File = kealib::KEAImageIO::openKeaH5RW( poOpenInfo->pszFilename );
}
// create the KEADataset object
KEADataset *pDataset = new KEADataset( pH5File, poOpenInfo->eAccess );
// set the description as the name
pDataset->SetDescription( poOpenInfo->pszFilename );
return pDataset;
}
catch (kealib::KEAIOException &e)
{
// was a problem - can't be a valid file
return NULL;
}
}
else
{
// not a KEA file
return NULL;
}
}
GDALDataset *KEADataset::CreateCopy( const char * pszFilename, GDALDataset *pSrcDs,
CPL_UNUSED int bStrict, char ** papszParmList,
GDALProgressFunc pfnProgress, void *pProgressData )
{
// get the data out of the input dataset
int nXSize = pSrcDs->GetRasterXSize();
int nYSize = pSrcDs->GetRasterYSize();
int nBands = pSrcDs->GetRasterCount();
GDALDataType eType = (nBands == 0) ? GDT_Unknown : pSrcDs->GetRasterBand(1)->GetRasterDataType();
H5::H5File *keaImgH5File = CreateLL( pszFilename, nXSize, nYSize, nBands,
eType, papszParmList );
if( keaImgH5File == NULL )
return NULL;
bool bThematic = CSLTestBoolean(CSLFetchNameValueDef( papszParmList, "THEMATIC", "FALSE" ));
try
{
// create the imageio
kealib::KEAImageIO *pImageIO = new kealib::KEAImageIO();
// open the file
pImageIO->openKEAImageHeader( keaImgH5File );
// copy file
if( !KEACopyFile( pSrcDs, pImageIO, pfnProgress, pProgressData) )
{
delete pImageIO;
return NULL;
}
// close it
try
{
pImageIO->close();
}
catch (kealib::KEAIOException &e)
{
}
delete pImageIO;
// now open it again - because the constructor loads all the info
// in we need to copy the data first....
keaImgH5File = kealib::KEAImageIO::openKeaH5RW( pszFilename );
// and wrap it in a dataset
KEADataset *pDataset = new KEADataset( keaImgH5File, GA_Update );
pDataset->SetDescription( pszFilename );
// set all to thematic if asked - overrides whatever set by CopyFile
if( bThematic )
{
for( int nCount = 0; nCount < nBands; nCount++ )
{
GDALRasterBand *pBand = pDataset->GetRasterBand(nCount+1);
pBand->SetMetadataItem("LAYER_TYPE", "thematic");
}
}
for( int nCount = 0; nCount < nBands; nCount++ )
{
pDataset->GetRasterBand(nCount+1)->SetColorInterpretation(
pSrcDs->GetRasterBand(nCount+1)->GetColorInterpretation());
}
// KEA has no concept of per-dataset mask band for now.
for( int nCount = 0; nCount < nBands; nCount++ )
{
if( pSrcDs->GetRasterBand(nCount+1)->GetMaskFlags() == 0 ) // Per-band mask
{
pDataset->GetRasterBand(nCount+1)->CreateMaskBand(0);
GDALRasterBandCopyWholeRaster(
(GDALRasterBandH)pSrcDs->GetRasterBand(nCount+1)->GetMaskBand(),
(GDALRasterBandH)pDataset->GetRasterBand(nCount+1)->GetMaskBand(),
NULL, NULL, NULL);
}
}
return pDataset;
}
catch (kealib::KEAException &e)
{
CPLError( CE_Failure, CPLE_OpenFailed,
"Attempt to create file `%s' failed. Error: %s\n",
pszFilename, e.what() );
return NULL;
}
}