decoder/*: move to decoder/plugins/

src/decoder/DecoderList.hxx

@@ -0,0 +1,89 @@
+/*
+ * 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_DECODER_LIST_HXX
+#define MPD_DECODER_LIST_HXX
+
+#include "Compiler.h"
+
+struct DecoderPlugin;
+
+extern const struct DecoderPlugin *const decoder_plugins[];
+extern bool decoder_plugins_enabled[];
+
+/* interface for using plugins */
+
+gcc_pure
+const struct DecoderPlugin *
+decoder_plugin_from_name(const char *name);
+
+/* this is where we "load" all the "plugins" ;-) */
+void decoder_plugin_init_all(void);
+
+/* this is where we "unload" all the "plugins" */
+void decoder_plugin_deinit_all(void);
+
+template<typename F>
+static inline const DecoderPlugin *
+decoder_plugins_find(F f)
+{
+	for (unsigned i = 0; decoder_plugins[i] != nullptr; ++i)
+		if (decoder_plugins_enabled[i] && f(*decoder_plugins[i]))
+			return decoder_plugins[i];
+
+	return nullptr;
+}
+
+template<typename F>
+static inline bool
+decoder_plugins_try(F f)
+{
+	for (unsigned i = 0; decoder_plugins[i] != nullptr; ++i)
+		if (decoder_plugins_enabled[i] && f(*decoder_plugins[i]))
+			return true;
+
+	return false;
+}
+
+template<typename F>
+static inline void
+decoder_plugins_for_each(F f)
+{
+	for (auto i = decoder_plugins; *i != nullptr; ++i)
+		f(**i);
+}
+
+template<typename F>
+static inline void
+decoder_plugins_for_each_enabled(F f)
+{
+	for (unsigned i = 0; decoder_plugins[i] != nullptr; ++i)
+		if (decoder_plugins_enabled[i])
+			f(*decoder_plugins[i]);
+}
+
+/**
+ * Is there at least once #DecoderPlugin that supports the specified
+ * file name suffix?
+ */
+gcc_pure gcc_nonnull_all
+bool
+decoder_plugins_supports_suffix(const char *suffix);
+
+#endif