/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ 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.
- This program is distributed in the hope that it will be useful,
+ 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 this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
* @brief A graph of FFmpeg filters.
*/
-#ifndef DVDOMATIC_FILTER_GRAPH_H
-#define DVDOMATIC_FILTER_GRAPH_H
+#ifndef DCPOMATIC_FILTER_GRAPH_H
+#define DCPOMATIC_FILTER_GRAPH_H
#include "util.h"
+extern "C" {
+#include <libavfilter/buffersink.h>
+}
+struct AVFilterContext;
+struct AVFrame;
class Image;
-class VideoFilter;
-class FFmpegDecoder;
+class Filter;
/** @class FilterGraph
* @brief A graph of FFmpeg filters.
*/
-class FilterGraph
+class FilterGraph : public boost::noncopyable
{
public:
- FilterGraph (boost::shared_ptr<Film> film, FFmpegDecoder* 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 const * 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; ///< size of the images that this chain can process
- AVPixelFormat _pixel_format; ///< pixel format of the images that this chain can process
+ AVFrame* _frame;
};
#endif