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/*
* Copyright 2003-2017 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
*
* A filter chain is a container for several filters. They are
* chained together, i.e. called in a row, one filter passing its
* output to the next one.
*/
#ifndef MPD_FILTER_CHAIN_HXX
#define MPD_FILTER_CHAIN_HXX
#include <memory>
class PreparedFilter;
/**
* Creates a new filter chain.
*/
std::unique_ptr<PreparedFilter>
filter_chain_new() noexcept;
/**
* Appends a new filter at the end of the filter chain. You must call
* this function before the first filter_open() call.
*
* @param chain the filter chain created with filter_chain_new()
* @param filter the filter to be appended to #chain
*/
void
filter_chain_append(PreparedFilter &chain, const char *name,
std::unique_ptr<PreparedFilter> filter) noexcept;
#endif
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