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authorPedro Vicente Nunes <pvn@hdfgroup.org>2008-04-29 19:15:53 (GMT)
committerPedro Vicente Nunes <pvn@hdfgroup.org>2008-04-29 19:15:53 (GMT)
commitb2a2c17c44bdf53a27b0f868752c9d6f6148e1ad (patch)
tree7a1496e5a192e5563f48d9dfdf179854af3eeebc /tools/h5dump/h5dump.c
parentc954ba63a4ccdd39353506e7f963cb3efce70461 (diff)
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[svn-r14895] RFC display compression ratio in h5dump
Here's the current behavior of h5dump regarding the printing of the dataset creation property list For example ./h5dump -H -p -d filters HDF5 "tfilters.h5" { DATASET "deflate" { DATATYPE H5T_STD_I32LE DATASPACE SIMPLE { ( 20, 10 ) / ( 20, 10 ) } STORAGE_LAYOUT { CHUNKED ( 10, 5 ) SIZE 385 } FILTERS { COMPRESSION DEFLATE { LEVEL 9 } } FILLVALUE { FILL_TIME H5D_FILL_TIME_IFSET VALUE 0 } ALLOCATION_TIME { H5D_ALLOC_TIME_INCR } } } The proposed behavior is to add this information after SIZE SIZE 385 (51.9%COMPRESSION) That percentage is obtained trough Per = (b-a) / a Where a = theoretical size obtained by multiplying datum size times number of elements b = size obtained with H5Dget_storage_size The final print would look like HDF5 "tfilters.h5" { DATASET "deflate" { DATATYPE H5T_STD_I32LE DATASPACE SIMPLE { ( 20, 10 ) / ( 20, 10 ) } STORAGE_LAYOUT { CHUNKED ( 10, 5 ) SIZE 385 (51.9%COMPRESSION) } FILTERS { COMPRESSION DEFLATE { LEVEL 9 } } FILLVALUE { FILL_TIME H5D_FILL_TIME_IFSET VALUE 0 } ALLOCATION_TIME { H5D_ALLOC_TIME_INCR } } } tested: windows, linux, solaris
Diffstat (limited to 'tools/h5dump/h5dump.c')
-rw-r--r--tools/h5dump/h5dump.c75
1 files changed, 72 insertions, 3 deletions
diff --git a/tools/h5dump/h5dump.c b/tools/h5dump/h5dump.c
index 70d889f..f951efc 100644
--- a/tools/h5dump/h5dump.c
+++ b/tools/h5dump/h5dump.c
@@ -2440,6 +2440,9 @@ static void dump_fill_value(hid_t dcpl,hid_t type_id, hid_t obj_id)
*
* Programmer: pvn
*
+ * Modifications: pvn, March 28, 2008
+ * Add a COMPRESSION ratio information for cases when filters are present
+ *
*-------------------------------------------------------------------------
*/
static void
@@ -2467,6 +2470,7 @@ dump_dcpl(hid_t dcpl_id,hid_t type_id, hid_t obj_id)
unsigned j;
storage_size=H5Dget_storage_size(obj_id);
+ nfilters = H5Pget_nfilters(dcpl_id);
ioffset=H5Dget_offset(obj_id);
next=H5Pget_external_count(dcpl_id);
strcpy(f_name,"\0");
@@ -2490,7 +2494,72 @@ dump_dcpl(hid_t dcpl_id,hid_t type_id, hid_t obj_id)
HDfprintf(stdout, ", %Hu", chsize[i]);
printf(" %s\n", dump_header_format->dataspacedimend);
indentation(indent + COL);
- HDfprintf(stdout, "SIZE %Hu\n ", storage_size);
+
+
+ /* if there are filters, print a compression ratio */
+ if ( nfilters )
+ {
+
+ hid_t sid = H5Dget_space( obj_id );
+ hid_t tid = H5Dget_type( obj_id );
+ size_t datum_size = H5Tget_size( tid );
+ hsize_t dims[H5S_MAX_RANK];
+ int ndims = H5Sget_simple_extent_dims( sid, dims, NULL);
+ hsize_t nelmts = 1;
+ hsize_t size;
+ double per = 0;
+ hssize_t a, b;
+ int ok = 0;
+
+ /* only print the compression ratio for these filters */
+ for ( i = 0; i < nfilters; i++)
+ {
+ cd_nelmts = NELMTS(cd_values);
+ filtn = H5Pget_filter2(dcpl_id, (unsigned)i, &filt_flags, &cd_nelmts,
+ cd_values, sizeof(f_name), f_name, NULL);
+
+ switch (filtn)
+ {
+ case H5Z_FILTER_DEFLATE:
+ case H5Z_FILTER_SZIP:
+ case H5Z_FILTER_NBIT:
+ case H5Z_FILTER_SCALEOFFSET:
+ ok = 1;
+ break;
+ }
+ }
+
+ if (ndims && ok )
+ {
+
+ for (i = 0; i < ndims; i++)
+ {
+ nelmts *= dims[i];
+ }
+ size = nelmts * datum_size;
+
+ a = size; b = storage_size;
+ if (a!=0)
+ per = (double) (b-a)/a;
+
+ per = -per;
+ per *=100;
+
+ HDfprintf(stdout, "SIZE %Hu (%.1f%%COMPRESSION)\n ", storage_size, per);
+
+ }
+ else
+ HDfprintf(stdout, "SIZE %Hu\n ", storage_size);
+
+
+ H5Sclose(sid);
+ H5Tclose(tid);
+
+ }
+ else
+ {
+ HDfprintf(stdout, "SIZE %Hu\n ", storage_size);
+ }
/*end indent */
indent -= COL;
@@ -2559,11 +2628,11 @@ dump_dcpl(hid_t dcpl_id,hid_t type_id, hid_t obj_id)
printf("%s\n",END);
}
}
- /*-------------------------------------------------------------------------
+ /*-------------------------------------------------------------------------
* FILTERS
*-------------------------------------------------------------------------
*/
- nfilters = H5Pget_nfilters(dcpl_id);
+
indentation(indent + COL);
printf("%s %s\n", FILTERS, BEGIN);