summaryrefslogtreecommitdiffstats
path: root/src/H5Pdcpl.c
diff options
context:
space:
mode:
authorXiaowen Wu <wuxiaowe@ncsa.uiuc.edu>2005-02-17 02:59:12 (GMT)
committerXiaowen Wu <wuxiaowe@ncsa.uiuc.edu>2005-02-17 02:59:12 (GMT)
commit92173d4496ef45c01a25e74ee95d6274085ac5bf (patch)
treeac91c730b69dd692b6421c2e645a1ba27c8a818f /src/H5Pdcpl.c
parent065fe7bb713761c65e0ceed6c647b1be1739ee43 (diff)
downloadhdf5-92173d4496ef45c01a25e74ee95d6274085ac5bf.zip
hdf5-92173d4496ef45c01a25e74ee95d6274085ac5bf.tar.gz
hdf5-92173d4496ef45c01a25e74ee95d6274085ac5bf.tar.bz2
[svn-r10024] Purpose:
New feature. Description: Add H5Zset_scaleoffset function for setting up the scaleoffset filter. Solution: Platforms tested: heping, copper, arabica Misc. update:
Diffstat (limited to 'src/H5Pdcpl.c')
-rw-r--r--src/H5Pdcpl.c62
1 files changed, 59 insertions, 3 deletions
diff --git a/src/H5Pdcpl.c b/src/H5Pdcpl.c
index bbdddde..33de459 100644
--- a/src/H5Pdcpl.c
+++ b/src/H5Pdcpl.c
@@ -1222,11 +1222,11 @@ done:
*
* Return: Non-negative on success/Negative on failure
*
- * Programmer: Kent Yang
- * Wednesday, November 13, 2002
+ * Programmer: Xiaowen Wu
+ * Wednesday, December 22, 2004
*
* Modifications:
- * Xiaowen Wu
+ *
*
*-------------------------------------------------------------------------
*/
@@ -1259,8 +1259,64 @@ H5Pset_nbit(hid_t plist_id)
done:
FUNC_LEAVE_API(ret_value);
} /* end H5Pset_nbit() */
+
+/*-------------------------------------------------------------------------
+ * Function: H5Pset_scaleoffset
+ *
+ * Purpose: Sets scaleoffset filter for a dataset creation property list
+ * and user-supplied minimum number of bits
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: Xiaowen Wu
+ * Wednesday, February 9, 2005
+ *
+ * Modifications:
+ *
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Pset_scaleoffset(hid_t plist_id, unsigned min_bits)
+{
+ H5O_pline_t pline;
+ H5P_genplist_t *plist; /* Property list pointer */
+ unsigned cd_values[1]; /* Filter parameters */
+ unsigned int config_flags;
+ herr_t ret_value=SUCCEED; /* return value */
+ FUNC_ENTER_API(H5Pset_scaleoffset, FAIL);
+ H5TRACE2("e","iIu",plist_id,min_bits);
+
+ /* Check arguments */
+ if(TRUE != H5P_isa_class(plist_id, H5P_DATASET_CREATE))
+ HGOTO_ERROR (H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataset creation property list");
+
+ /* Get the plist structure */
+ if(NULL == (plist = H5I_object(plist_id)))
+ HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID");
+
+ if(min_bits < 0)
+ HGOTO_ERROR (H5E_ARGS, H5E_BADVALUE, FAIL, "minimum number of bits can't be positive");
+
+ /* Set the parameter for the filter */
+ /* if min_bits is zero, the scaleoffset filter will automatically calculate min_bits */
+ cd_values[0] = min_bits;
+
+ /* Add the scaleoffset filter */
+ if(H5P_get(plist, H5D_CRT_DATA_PIPELINE_NAME, &pline) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get pipeline");
+ if(H5Z_append(&pline, H5Z_FILTER_SCALEOFFSET, H5Z_FLAG_OPTIONAL, 1, cd_values)<0)
+ HGOTO_ERROR(H5E_PLINE, H5E_CANTINIT, FAIL, "unable to add scaleoffset filter to pipeline");
+ if(H5P_set(plist, H5D_CRT_DATA_PIPELINE_NAME, &pline) < 0)
+ HGOTO_ERROR(H5E_PLINE, H5E_CANTINIT, FAIL, "unable to set pipeline");
+
+done:
+ FUNC_LEAVE_API(ret_value);
+} /* end H5Pset_scaleoffset() */
+
+
/*-------------------------------------------------------------------------
* Function: H5Pset_fletcher32
*