DataAccessorImpl* createDataAccessor(DataElement* pElement, DataAccessorArgs* pArgs)
{
RasterElement* pRasterElement = dynamic_cast<RasterElement*>(pElement);
if (pRasterElement == NULL)
{
setLastError(SIMPLE_BAD_PARAMS);
return NULL;
}
FactoryResource<DataRequest> pRequest;
RasterDataDescriptor* pDescriptor = dynamic_cast<RasterDataDescriptor*>(pRasterElement->getDataDescriptor());
if (pArgs != NULL)
{
pRequest->setRows(pDescriptor->getActiveRow(pArgs->rowStart),
pDescriptor->getActiveRow(pArgs->rowEnd),pArgs->concurrentRows);
pRequest->setColumns(pDescriptor->getActiveColumn(pArgs->columnStart),
pDescriptor->getActiveColumn(pArgs->columnEnd),pArgs->concurrentColumns);
pRequest->setBands(pDescriptor->getActiveBand(pArgs->bandStart),
pDescriptor->getActiveBand(pArgs->bandEnd),pArgs->concurrentBands);
pRequest->setInterleaveFormat(static_cast<InterleaveFormatTypeEnum>(pArgs->interleaveFormat));
pRequest->setWritable(pArgs->writable != 0);
}
DataAccessor dataAccessor(pRasterElement->getDataAccessor(pRequest.release()));
if (!dataAccessor.isValid())
{
setLastError(SIMPLE_BAD_PARAMS);
return NULL;
}
DataAccessorImpl* pRval = dataAccessor.operator->();
pRval->incrementRefCount();
setLastError(SIMPLE_NO_ERROR);
return pRval;
}
DataAccessor getAccessor(int band, bool writable = false) {
FactoryResource<DataRequest> pRequest = FactoryResource<DataRequest>();
pRequest->setRows(pDataDescriptor->getActiveRow(0), pDataDescriptor->getActiveRow(getRowCount() - 1));
pRequest->setColumns(pDataDescriptor->getActiveColumn(0), pDataDescriptor->getActiveColumn(getColumnCount() - 1));
pRequest->setBands(pDataDescriptor->getActiveBand(band), pDataDescriptor->getActiveBand(band));
pRequest->setWritable(writable);
return pRaster->getDataAccessor(pRequest.release());
}
