1 files changed, 67 insertions, 0 deletions
diff --git a/src/filter/FilterPlugin.hxx b/src/filter/FilterPlugin.hxx
new file mode 100644
index 000000000..443d29881
--- /dev/null
+++ b/src/filter/FilterPlugin.hxx
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 2 of the License, or
+ * (at your option) 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/** \file
+ *
+ * This header declares the filter_plugin class.  It describes a
+ * plugin API for objects which filter raw PCM data.
+ */
+
+#ifndef MPD_FILTER_PLUGIN_HXX
+#define MPD_FILTER_PLUGIN_HXX
+
+struct config_param;
+class Filter;
+class Error;
+
+struct filter_plugin {
+	const char *name;
+
+	/**
+         * Allocates and configures a filter.
+	 */
+	Filter *(*init)(const config_param &param, Error &error);
+};
+
+/**
+ * Creates a new instance of the specified filter plugin.
+ *
+ * @param plugin the filter plugin
+ * @param param optional configuration section
+ * @param error location to store the error occurring, or nullptr to
+ * ignore errors.
+ * @return a new filter object, or nullptr on error
+ */
+Filter *
+filter_new(const struct filter_plugin *plugin,
+	   const config_param &param, Error &error);
+
+/**
+ * Creates a new filter, loads configuration and the plugin name from
+ * the specified configuration section.
+ *
+ * @param param the configuration section
+ * @param error location to store the error occurring, or nullptr to
+ * ignore errors.
+ * @return a new filter object, or nullptr on error
+ */
+Filter *
+filter_configured_new(const config_param &param, Error &error);
+
+#endif