ebm: added skeleton for new hook

lib/hooks/CMakeLists.txt

@@ -21,22 +21,23 @@
 ###################################################################################
 
 set(HOOK_SRC
+    average.c
+    cast.c
     decimate.c
+    dp.c
     drop.c
+    dump.c
+    ebm.c
+    fix.c
     jitter_calc.c
+    limit_rate.c
     restart.c
+    scale.c
     shift_seq.c
     shift_ts.c
     skip_first.c
     stats.c
     ts.c
-    limit_rate.c
-    scale.c
-    fix.c
-    cast.c
-    average.c
-    dump.c
-    dp.c
 )
 
 if(WITH_IO)

lib/hooks/ebm.c

@@ -0,0 +1,105 @@
+/** Energy-based Metric hook.
+ *
+ * @author Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
+ * @copyright 2014-2019, Institute for Automation of Complex Power Systems, EONERC
+ * @license GNU General Public License (version 3)
+ *
+ * VILLASnode
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *********************************************************************************/
+
+/** @addtogroup hooks Hook functions
+ * @{
+ */
+
+#include <villas/hook.h>
+#include <villas/plugin.h>
+#include <villas/sample.h>
+
+struct ebm {
+
+};
+
+static int ebm_init(struct hook *h)
+{
+	__attribute__((unused)) struct ebm *e = (struct ebm *) h->_vd;
+
+	return 0;
+}
+
+static int ebm_destroy(struct hook *h)
+{
+	__attribute__((unused)) struct ebm *e = (struct ebm *) h->_vd;
+
+	return 0;
+}
+
+static int ebm_start(struct hook *h)
+{
+	__attribute__((unused)) struct ebm *e = (struct ebm *) h->_vd;
+
+	return 0;
+}
+
+static int ebm_stop(struct hook *h)
+{
+	__attribute__((unused)) struct ebm *e = (struct ebm *) h->_vd;
+
+	return 0;
+}
+
+static int ebm_parse(struct hook *h, json_t *cfg)
+{
+	__attribute__((unused)) struct ebm *e = (struct ebm *) h->_vd;
+
+	return 0;
+}
+
+static int ebm_prepare(struct hook *h)
+{
+	__attribute__((unused)) struct ebm *e = (struct ebm *) h->_vd;
+
+	return 0;
+}
+
+
+static int ebm_process(struct hook *h, struct sample *smps[], unsigned *cnt)
+{
+	__attribute__((unused)) struct ebm *e = (struct ebm *) h->_vd;
+
+	return 0;
+}
+
+static struct plugin p = {
+	.name		= "ebm",
+	.description	= "Energy-based Metric",
+	.type		= PLUGIN_TYPE_HOOK,
+	.hook		= {
+		.flags		= HOOK_PATH | HOOK_NODE_READ | HOOK_NODE_WRITE,
+		.priority	= 99,
+		.init		= ebm_init,
+		.init_signals	= ebm_prepare,
+		.destroy	= ebm_destroy,
+		.start		= ebm_start,
+		.stop		= ebm_stop,
+		.parse		= ebm_parse,
+		.process	= ebm_process,
+		.size		= sizeof(struct ebm)
+	}
+};
+
+REGISTER_PLUGIN(&p)
+
+/** @} */