mpd/src/filter/FilterPlugin.cxx

/*
 * Copyright 2003-2016 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.
 */

#include "config.h"
#include "FilterPlugin.hxx"
#include "FilterRegistry.hxx"
#include "config/Block.hxx"
#include "config/ConfigError.hxx"
#include "util/RuntimeError.hxx"

#include <assert.h>

PreparedFilter *
filter_new(const struct filter_plugin *plugin, const ConfigBlock &block)
{
	assert(plugin != nullptr);

	return plugin->init(block);
}

PreparedFilter *
filter_configured_new(const ConfigBlock &block)
{
	const char *plugin_name = block.GetBlockValue("plugin");
	if (plugin_name == nullptr)
		throw std::runtime_error("No filter plugin specified");

	const filter_plugin *plugin = filter_plugin_by_name(plugin_name);
	if (plugin == nullptr)
		throw FormatRuntimeError("No such filter plugin: %s",
					 plugin_name);

	return filter_new(plugin, block);
}