added the encoder API

The new generic encoder API will replace shout's custom encoder API.

src/encoder_list.c

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2003-2009 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "encoder_list.h"
+#include "encoder_plugin.h"
+#include "config.h"
+
+#include <string.h>
+
+static const struct encoder_plugin *encoder_plugins[] = {
+	NULL
+};
+
+const struct encoder_plugin *
+encoder_plugin_get(const char *name)
+{
+	for (unsigned i = 0; encoder_plugins[i] != NULL; ++i)
+		if (strcmp(encoder_plugins[i]->name, name) == 0)
+			return encoder_plugins[i];
+
+	return NULL;
+}