diff options
Diffstat (limited to 'c++/examples/h5tutr_cmprss.cpp')
| -rw-r--r-- | c++/examples/h5tutr_cmprss.cpp | 98 |
1 files changed, 47 insertions, 51 deletions
diff --git a/c++/examples/h5tutr_cmprss.cpp b/c++/examples/h5tutr_cmprss.cpp index 9531bdd..7c55709 100644 --- a/c++/examples/h5tutr_cmprss.cpp +++ b/c++/examples/h5tutr_cmprss.cpp @@ -6,7 +6,7 @@ * This file is part of HDF5. The full HDF5 copyright notice, including * * terms governing use, modification, and redistribution, is contained in * * the COPYING file, which can be found at the root of the source code * - * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * + * distribution tree, or in https://www.hdfgroup.org/licenses. * * If you do not have access to either file, you may request a copy from * * help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ @@ -24,32 +24,32 @@ using std::endl; #include "H5Cpp.h" using namespace H5; -const H5std_string FILE_NAME("h5tutr_cmprss.h5"); -const H5std_string DATASET_NAME("Compressed_Data"); -const int DIM0 = 100; -const int DIM1 = 20; +const H5std_string FILE_NAME("h5tutr_cmprss.h5"); +const H5std_string DATASET_NAME("Compressed_Data"); +const int DIM0 = 100; +const int DIM1 = 20; -int main (void) +int +main(void) { - hsize_t dims[2] = { DIM0, DIM1 }; // dataset dimensions - hsize_t chunk_dims[2] = { 20, 20 }; // chunk dimensions - int i,j, buf[DIM0][DIM1]; + hsize_t dims[2] = {DIM0, DIM1}; // dataset dimensions + hsize_t chunk_dims[2] = {20, 20}; // chunk dimensions + int i, j, buf[DIM0][DIM1]; // Try block to detect exceptions raised by any of the calls inside it - try - { + try { // Turn off the auto-printing when failure occurs so that we can // handle the errors appropriately Exception::dontPrint(); - // Create a new file using the default property lists. + // Create a new file using the default property lists. H5File file(FILE_NAME, H5F_ACC_TRUNC); // Create the data space for the dataset. DataSpace *dataspace = new DataSpace(2, dims); // Modify dataset creation property to enable chunking - DSetCreatPropList *plist = new DSetCreatPropList; + DSetCreatPropList *plist = new DSetCreatPropList; plist->setChunk(2, chunk_dims); // Set ZLIB (DEFLATE) Compression using level 6. @@ -60,14 +60,14 @@ int main (void) // unsigned szip_options_mask = H5_SZIP_NN_OPTION_MASK; // unsigned szip_pixels_per_block = 16; // plist->setSzip(szip_options_mask, szip_pixels_per_block); - - // Create the dataset. - DataSet *dataset = new DataSet(file.createDataSet( DATASET_NAME, - PredType::STD_I32BE, *dataspace, *plist) ); - for (i = 0; i< DIM0; i++) - for (j=0; j<DIM1; j++) - buf[i][j] = i+j; + // Create the dataset. + DataSet *dataset = + new DataSet(file.createDataSet(DATASET_NAME, PredType::STD_I32BE, *dataspace, *plist)); + + for (i = 0; i < DIM0; i++) + for (j = 0; j < DIM1; j++) + buf[i][j] = i + j; // Write data to dataset. dataset->write(buf, PredType::NATIVE_INT); @@ -79,77 +79,73 @@ int main (void) file.close(); // ----------------------------------------------- - // Re-open the file and dataset, retrieve filter + // Re-open the file and dataset, retrieve filter // information for dataset and read the data back. // ----------------------------------------------- - - int rbuf[DIM0][DIM1]; - int numfilt; - size_t nelmts={1}, namelen={1}; - unsigned flags, filter_info, cd_values[1], idx; - char name[1]; + + int rbuf[DIM0][DIM1]; + int numfilt; + size_t nelmts = {1}, namelen = {1}; + unsigned flags, filter_info, cd_values[1], idx; + char name[1]; H5Z_filter_t filter_type; // Open the file and the dataset in the file. file.openFile(FILE_NAME, H5F_ACC_RDONLY); - dataset = new DataSet(file.openDataSet( DATASET_NAME)); + dataset = new DataSet(file.openDataSet(DATASET_NAME)); // Get the create property list of the dataset. - plist = new DSetCreatPropList(dataset->getCreatePlist ()); + plist = new DSetCreatPropList(dataset->getCreatePlist()); // Get the number of filters associated with the dataset. numfilt = plist->getNfilters(); cout << "Number of filters associated with dataset: " << numfilt << endl; - for (idx=0; idx < numfilt; idx++) { + for (idx = 0; idx < numfilt; idx++) { nelmts = 0; - filter_type = plist->getFilter(idx, flags, nelmts, cd_values, namelen, name , filter_info); + filter_type = plist->getFilter(idx, flags, nelmts, cd_values, namelen, name, filter_info); cout << "Filter Type: "; switch (filter_type) { - case H5Z_FILTER_DEFLATE: - cout << "H5Z_FILTER_DEFLATE" << endl; - break; - case H5Z_FILTER_SZIP: - cout << "H5Z_FILTER_SZIP" << endl; - break; - default: - cout << "Other filter type included." << endl; - } + case H5Z_FILTER_DEFLATE: + cout << "H5Z_FILTER_DEFLATE" << endl; + break; + case H5Z_FILTER_SZIP: + cout << "H5Z_FILTER_SZIP" << endl; + break; + default: + cout << "Other filter type included." << endl; + } } // Read data. dataset->read(rbuf, PredType::NATIVE_INT); - delete plist; + delete plist; delete dataset; - file.close(); // can be skipped + file.close(); // can be skipped - } // end of try block + } // end of try block // catch failure caused by the H5File operations - catch(FileIException error) - { + catch (FileIException error) { error.printErrorStack(); return -1; } // catch failure caused by the DataSet operations - catch(DataSetIException error) - { + catch (DataSetIException error) { error.printErrorStack(); return -1; } // catch failure caused by the DataSpace operations - catch(DataSpaceIException error) - { + catch (DataSpaceIException error) { error.printErrorStack(); return -1; } - return 0; // successfully terminated + return 0; // successfully terminated } - |