logger: add loadable logger

spa/plugins/logger/plugin.c

@@ -0,0 +1,38 @@
+/* Spa Video Test Source plugin
+ * Copyright (C) 2016 Axis Communications AB
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include <spa/plugin.h>
+#include <spa/node.h>
+
+extern const struct spa_handle_factory spa_logger_factory;
+
+int
+spa_handle_factory_enum(const struct spa_handle_factory **factory, uint32_t index)
+{
+	spa_return_val_if_fail(factory != NULL, SPA_RESULT_INVALID_ARGUMENTS);
+
+	switch (index) {
+	case 0:
+		*factory = &spa_logger_factory;
+		break;
+	default:
+		return SPA_RESULT_ENUM_END;
+	}
+	return SPA_RESULT_OK;
+}