[svn-r6551] Purpose:

To support szip compression in HDF5

Description:
szip compression support is required by NASA ESDIS. The compression algorithm
is good for scientific data. In HDF5, we add another filter
function to make szip as a default compression package as we did for gzip(or zlib).

In this check-in, a new function called H5Pset_szip was added into H5Pdcpl.c, this
function is very similar to H5Pset_deflate. The only difference is SZIP needs
four parameters from the user to get the compression done while gzip needs only one.
So we pass a pointer to this function instead of an integer number.

The description of the four parameters of szip should be in different
documents.

H5Z.c and other header files were simply modified to have HDF5 know szip.

Solution:
See the decription

Platforms tested:
Since there are changes of configure.in and configure,I didn't use h5committest.
I tested with four platforms.
1) Linux 2.4 (eirene)
2) Solaris 2.7(arabica)
3) windows 2000(VS 6.0)
4) SGI IRIX6.5-64(modi4)
For test 1)-3), only basic C tests were done
For modi4 test, I tested 64-bit C,parallel and fortran.
All tests passed, except a warning message from szip library when checksum is used in some order, which doesn't cause any real problems.

Misc. update:

1 files changed, 12 insertions, 13 deletions

diff --git a/src/H5Ppublic.h b/src/H5Ppublic.h
index e4760e5..7b3fc38 100644
--- a/src/H5Ppublic.h
+++ b/src/H5Ppublic.h
@@ -1,16 +1,14 @@
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
- * 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. *
- * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/****************************************************************************
+ * NCSA HDF                                                                 *
+ * Software Development Group                                               *
+ * National Center for Supercomputing Applications                          *
+ * University of Illinois at Urbana-Champaign                               *
+ * 605 E. Springfield, Champaign IL 61820                                   *
+ *                                                                          *
+ * For conditions of distribution and use, see the accompanying             *
+ * COPYING file.                                                            *
+ *                                                                          *
+ ****************************************************************************/
 
 /*
  * This file contains function prototypes for each exported function in the
@@ -220,6 +218,7 @@ H5_DLL H5Z_filter_t H5Pget_filter(hid_t plist_id, int filter,
        unsigned cd_values[]/*out*/,
        size_t namelen, char name[]);
 H5_DLL herr_t H5Pset_deflate(hid_t plist_id, unsigned aggression);
+H5_DLL herr_t H5Pset_szip(hid_t plist_id,const unsigned cd_values[]);
 H5_DLL herr_t H5Pset_shuffle(hid_t plist_id, unsigned bytespertype);
 H5_DLL herr_t H5Pset_fletcher32(hid_t plist_id);
 H5_DLL herr_t H5Pset_edc_check(hid_t plist_id, H5Z_EDC_t check);