playlist/*: move to playlist/plugins/

1 files changed, 109 insertions, 0 deletions

diff --git a/src/playlist/PlaylistPlugin.hxx b/src/playlist/PlaylistPlugin.hxx
new file mode 100644
index 000000000..d3c44f1f4
--- /dev/null
+++ b/src/playlist/PlaylistPlugin.hxx
@@ -0,0 +1,109 @@
+/*
+ * 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.
+ */
+
+#ifndef MPD_PLAYLIST_PLUGIN_HXX
+#define MPD_PLAYLIST_PLUGIN_HXX
+
+struct config_param;
+struct InputStream;
+struct Tag;
+class Mutex;
+class Cond;
+class SongEnumerator;
+
+struct playlist_plugin {
+	const char *name;
+
+	/**
+	 * Initialize the plugin.  Optional method.
+	 *
+	 * @param param a configuration block for this plugin, or nullptr
+	 * if none is configured
+	 * @return true if the plugin was initialized successfully,
+	 * false if the plugin is not available
+	 */
+	bool (*init)(const config_param &param);
+
+	/**
+	 * Deinitialize a plugin which was initialized successfully.
+	 * Optional method.
+	 */
+	void (*finish)(void);
+
+	/**
+	 * Opens the playlist on the specified URI.  This URI has
+	 * either matched one of the schemes or one of the suffixes.
+	 */
+	SongEnumerator *(*open_uri)(const char *uri,
+				    Mutex &mutex, Cond &cond);
+
+	/**
+	 * Opens the playlist in the specified input stream.  It has
+	 * either matched one of the suffixes or one of the MIME
+	 * types.
+	 */
+	SongEnumerator *(*open_stream)(InputStream &is);
+
+	const char *const*schemes;
+	const char *const*suffixes;
+	const char *const*mime_types;
+};
+
+/**
+ * Initialize a plugin.
+ *
+ * @param param a configuration block for this plugin, or nullptr if none
+ * is configured
+ * @return true if the plugin was initialized successfully, false if
+ * the plugin is not available
+ */
+static inline bool
+playlist_plugin_init(const struct playlist_plugin *plugin,
+		     const config_param &param)
+{
+	return plugin->init != nullptr
+		? plugin->init(param)
+		: true;
+}
+
+/**
+ * Deinitialize a plugin which was initialized successfully.
+ */
+static inline void
+playlist_plugin_finish(const struct playlist_plugin *plugin)
+{
+	if (plugin->finish != nullptr)
+		plugin->finish();
+}
+
+static inline SongEnumerator *
+playlist_plugin_open_uri(const struct playlist_plugin *plugin, const char *uri,
+			 Mutex &mutex, Cond &cond)
+{
+	return plugin->open_uri(uri, mutex, cond);
+}
+
+static inline SongEnumerator *
+playlist_plugin_open_stream(const struct playlist_plugin *plugin,
+			    InputStream &is)
+{
+	return plugin->open_stream(is);
+}
+
+#endif