1 files changed, 95 insertions, 0 deletions
diff --git a/tools/test/h5dump/dynlib_dump.c b/tools/test/h5dump/dynlib_dump.c
new file mode 100644
index 0000000..fd675b0
--- /dev/null
+++ b/tools/test/h5dump/dynlib_dump.c
@@ -0,0 +1,95 @@
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
+ * 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://www.hdfgroup.org/licenses.               *
+ * 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_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. */
+    (void)cd_values;
+
+    if (flags & H5Z_FLAG_REVERSE) { /*read*/
+        /* Subtract the original value with MULTIPLIER */
+        while (buf_left > 0) {
+            char temp = *int_ptr;
+            *int_ptr  = (int8_t)(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  = (int8_t)(temp + MULTIPLIER);
+            int_ptr++;
+            buf_left -= sizeof(*int_ptr);
+        } /* end while */
+    }     /* end else */
+
+    return nbytes;
+} /* end H5Z_filter_dynlibud() */