[svn-r8781]

Purpose:
HDF5 now supports SZIP with no encoder.

Description:
SZIP can be configured to have both encoder and decoder or just to have the decoder.  HDF5 can now query the configuration of any filter, and will throw errors if users try to write using a filter with encoding disabled.

Solution:
Added H5Zget_filter_info function, changed API for H5Pget_filter and H5P_get_filter_by_id.  See SZIP RFC.

Platforms tested:
Copper (fortran, C++, parallel), Sleipnir (C++), Arabica (fortran, C++), Verbena (fortran, C++)

Misc. update:

1 files changed, 80 insertions, 0 deletions

diff --git a/test/createnoenc.c b/test/createnoenc.c
new file mode 100644
index 0000000..f444df6
--- /dev/null
+++ b/test/createnoenc.c
@@ -0,0 +1,80 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by the Board of Trustees of the University of Illinois.         *
+ * All rights reserved.                                                      *
+ *                                                                           *
+ * This file is part of HDF5.  The full HDF5 copyright notice, including     *
+ * terms governing use, modification, and redistribution, is contained in    *
+ * the files COPYING and Copyright.html.  COPYING can be found at the root   *
+ * of the source code distribution tree; Copyright.html can be found at the  *
+ * root level of an installed copy of the electronic HDF5 document set and   *
+ * is linked from the top-level documents page.  It can also be found at     *
+ * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
+ * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+#include "hdf5.h"
+
+/*-------------------------------------------------------------------------
+ * Function:    main
+ *
+ * Purpose:     Generates the noencoder.h5 file used to test SZIP without
+ *              an encoder present.
+ *
+ * Return:      Success:        zero
+ *
+ *              Failure:        non-zero
+ *
+ * Programmer:  James Laird and Nat Furrer
+ *              Thursday, July 1, 2004
+ *
+ * Modifications:
+ *
+ *-------------------------------------------------------------------------
+ */
+main()
+{
+	hid_t file_id;
+	hid_t dset_id;
+	hid_t dcpl_id;
+	hid_t space_id;
+	hsize_t dims, maxdims;
+	int fill = 0;
+	int write_buf[10] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+
+	file_id = H5Fcreate("noencoder.h5", H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
+
+	dims = 10;
+	maxdims = H5S_UNLIMITED;
+	space_id = H5Screate_simple(1, &dims, &maxdims);
+
+	dcpl_id = H5Pcreate(H5P_DATASET_CREATE);
+	H5Pset_chunk(dcpl_id, 1, &dims);
+	H5Pset_szip(dcpl_id, H5_SZIP_NN_OPTION_MASK, 4);
+	H5Pset_fill_value(dcpl_id, H5T_NATIVE_INT, &fill);
+	H5Pset_fill_time(dcpl_id, H5D_FILL_TIME_ALLOC);
+
+    /* Create dataset noencoder_szip_dset.h5 */
+	dset_id = H5Dcreate(file_id, "noencoder_szip_dset.h5", H5T_NATIVE_INT, space_id, dcpl_id);
+
+	H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, write_buf);
+
+	H5Pclose(dcpl_id);
+	H5Dclose(dset_id);
+
+	dcpl_id = H5Pcreate(H5P_DATASET_CREATE);
+	H5Pset_chunk(dcpl_id, 1, &dims);
+	H5Pset_szip(dcpl_id, H5_SZIP_NN_OPTION_MASK, 4);
+	H5Pset_shuffle(dcpl_id);
+	H5Pset_fletcher32(dcpl_id);
+	H5Pset_fill_value(dcpl_id, H5T_NATIVE_INT, &fill);
+	H5Pset_fill_time(dcpl_id, H5D_FILL_TIME_ALLOC);
+
+    /* Create dataset noencoder_szip_shuffle_fletcher_dset.h5 */
+	dset_id = H5Dcreate(file_id, "noencoder_szip_shuffle_fletcher_dset.h5", H5T_NATIVE_INT, space_id, dcpl_id);
+
+	H5Dwrite(dset_id, H5T_NATIVE_INT, H5S_ALL, H5S_ALL, H5P_DEFAULT, write_buf);
+
+	H5Pclose(dcpl_id);
+	H5Dclose(dset_id);
+	H5Sclose(space_id);
+	H5Fclose(file_id);
+}
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