-#ifndef DVDOMATIC_FILTER_GRAPH_H
-#define DVDOMATIC_FILTER_GRAPH_H
+/*
+ Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic 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.
+
+ DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+/** @file src/lib/filter_graph.h
+ * @brief A graph of FFmpeg filters.
+ */
+
+#ifndef DCPOMATIC_FILTER_GRAPH_H
+#define DCPOMATIC_FILTER_GRAPH_H
#include "util.h"
+extern "C" {
+#include <libavfilter/buffersink.h>
+}
-class Decoder;
+struct AVFilterContext;
+struct AVFrame;
class Image;
-class Film;
+class Filter;
-class FilterGraph
+/** @class FilterGraph
+ * @brief A graph of FFmpeg filters.
+ */
+class FilterGraph : public boost::noncopyable
{
public:
- FilterGraph (boost::shared_ptr<Film> film, Decoder* decoder, bool crop, Size s, AVPixelFormat p);
+ FilterGraph ();
+ virtual ~FilterGraph ();
+
+ void setup (std::vector<Filter const *>);
+ AVFilterContext* get (std::string name);
- bool can_process (Size s, AVPixelFormat p) const;
- std::list<boost::shared_ptr<Image> > process (AVFrame* frame);
+protected:
+ virtual std::string src_parameters () const = 0;
+ virtual std::string src_name () const = 0;
+ virtual void* sink_parameters () const = 0;
+ virtual std::string sink_name () const = 0;
-private:
+ AVFilterGraph* _graph;
+ /** true if this graph has no filters in, so it just copies stuff straight through */
+ bool _copy;
AVFilterContext* _buffer_src_context;
AVFilterContext* _buffer_sink_context;
- Size _size;
- AVPixelFormat _pixel_format;
+ AVFrame* _frame;
};
#endif