From c372c3756b24d2ecd879f1f857ccdbf421f3be33 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Mon, 6 Jul 2009 10:01:02 +0200 Subject: filter/chain: new library for creating a chain of filters --- src/filter/chain_filter_plugin.h | 48 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 src/filter/chain_filter_plugin.h (limited to 'src/filter/chain_filter_plugin.h') diff --git a/src/filter/chain_filter_plugin.h b/src/filter/chain_filter_plugin.h new file mode 100644 index 00000000..f8462b22 --- /dev/null +++ b/src/filter/chain_filter_plugin.h @@ -0,0 +1,48 @@ +/* + * 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., + * 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_H +#define MPD_FILTER_CHAIN_H + +struct filter; + +/** + * Creates a new filter chain. + */ +struct filter * +filter_chain_new(void); + +/** + * 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(struct filter *chain, struct filter *filter); + +#endif -- cgit v1.2.3