/*
- 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
it under the terms of the GNU General Public License as published by
* @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
-{
-public:
- virtual ~FilterGraph () {}
- virtual bool can_process (libdcp::Size, AVPixelFormat) const = 0;
- virtual std::list<boost::shared_ptr<Image> > process (AVFrame *) = 0;
-};
-
-class EmptyFilterGraph : public FilterGraph
-{
-public:
- bool can_process (libdcp::Size, AVPixelFormat) const {
- return true;
- }
-
- std::list<boost::shared_ptr<Image> > process (AVFrame *);
-};
-
-/** @class FFmpegFilterGraph
+/** @class FilterGraph
* @brief A graph of FFmpeg filters.
*/
-class FFmpegFilterGraph : public FilterGraph
+class FilterGraph : public boost::noncopyable
{
public:
- FFmpegFilterGraph (boost::shared_ptr<Film> film, FFmpegDecoder* decoder, libdcp::Size s, AVPixelFormat p);
- ~FFmpegFilterGraph ();
+ FilterGraph ();
+ virtual ~FilterGraph ();
- bool can_process (libdcp::Size s, AVPixelFormat p) const;
- std::list<boost::shared_ptr<Image> > process (AVFrame * frame);
+ void setup (std::vector<Filter const *>);
+ AVFilterContext* get (std::string name);
-private:
+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;
+
+ 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;
- libdcp::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;
};
-boost::shared_ptr<FilterGraph> filter_graph_factory (boost::shared_ptr<Film>, FFmpegDecoder *, libdcp::Size, AVPixelFormat);
-
#endif