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-rw-r--r--tools/test/h5copy/dynlib_copy.c89
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diff --git a/tools/test/h5copy/dynlib_copy.c b/tools/test/h5copy/dynlib_copy.c
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+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * Copyright by The HDF Group. *
+ * 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 COPYING file, which can be found at the root of the source code *
+ * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. *
+ * If you do not have access to either file, you may request a copy from *
+ * help@hdfgroup.org. *
+ * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/*
+ * Purpose: Tests the plugin module (H5PL)
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include "H5PLextern.h"
+
+#define H5Z_FILTER_DYNLIBUD 300
+#define MULTIPLIER 3
+
+static size_t H5Z_filter_dynlibud(unsigned int flags, size_t cd_nelmts,
+ const unsigned int *cd_values, size_t nbytes, size_t *buf_size, void **buf);
+
+/* This message derives from H5Z */
+const H5Z_class2_t H5Z_DYNLIBUD[1] = {{
+ H5Z_CLASS_T_VERS, /* H5Z_class_t version */
+ H5Z_FILTER_DYNLIBUD, /* Filter id number */
+ 1, 1, /* Encoding and decoding enabled */
+ "dynlibud", /* Filter name for debugging */
+ NULL, /* The "can apply" callback */
+ NULL, /* The "set local" callback */
+ (H5Z_func_t)H5Z_filter_dynlibud, /* The actual filter function */
+}};
+
+H5PL_type_t H5PLget_plugin_type(void) {return H5PL_TYPE_FILTER;}
+const void *H5PLget_plugin_info(void) {return H5Z_DYNLIBUD;}
+
+/*-------------------------------------------------------------------------
+ * Function: H5Z_filter_dynlibud
+ *
+ * Purpose: A dynlib2 filter method that multiplies the original value
+ * during write and divide the original value during read. It
+ * will be built as a shared library. plugin.c test will load
+ * and use this filter library.
+ *
+ * Return: Success: Data chunk size
+ *
+ * Failure: 0
+ *-------------------------------------------------------------------------
+ */
+static size_t
+H5Z_filter_dynlibud(unsigned int flags, size_t cd_nelmts,
+ const unsigned int *cd_values, size_t nbytes,
+ size_t *buf_size, void **buf)
+{
+ char *int_ptr = (char *)*buf; /* Pointer to the data values */
+ size_t buf_left = *buf_size; /* Amount of data buffer left to process */
+
+ /* Check for the correct number of parameters */
+ if(cd_nelmts > 0)
+ return(0);
+
+ /* Assignment to eliminate unused parameter warning. */
+ cd_values = cd_values;
+
+ if(flags & H5Z_FLAG_REVERSE) { /*read*/
+ /* Subtract the original value with MULTIPLIER */
+ while(buf_left > 0) {
+ char temp = *int_ptr;
+ *int_ptr = temp - MULTIPLIER;
+ int_ptr++;
+ buf_left -= sizeof(*int_ptr);
+ } /* end while */
+ } /* end if */
+ else { /*write*/
+ /* Add the original value with MULTIPLIER */
+ while(buf_left > 0) {
+ char temp = *int_ptr;
+ *int_ptr = temp + MULTIPLIER;
+ int_ptr++;
+ buf_left -= sizeof(*int_ptr);
+ } /* end while */
+ } /* end else */
+
+ return nbytes;
+} /* end H5Z_filter_dynlibud() */
+