2 Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 /** @file src/lib/filter_graph.h
22 * @brief A graph of FFmpeg filters.
25 #ifndef DCPOMATIC_FILTER_GRAPH_H
26 #define DCPOMATIC_FILTER_GRAPH_H
30 #include <libavfilter/buffersink.h>
33 struct AVFilterContext;
38 /** @class FilterGraph
39 * @brief A graph of FFmpeg filters.
41 class FilterGraph : public boost::noncopyable
45 virtual ~FilterGraph ();
47 void setup (std::vector<Filter const *>);
48 AVFilterContext* get (std::string name);
51 virtual std::string src_parameters () const = 0;
52 virtual std::string src_name () const = 0;
53 virtual void* sink_parameters () const = 0;
54 virtual std::string sink_name () const = 0;
56 AVFilterGraph* _graph;
57 /** true if this graph has no filters in, so it just copies stuff straight through */
59 AVFilterContext* _buffer_src_context;
60 AVFilterContext* _buffer_sink_context;