X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=src%2Flib%2Ffilter_graph.h;h=9ee628d4cd097fa9b2bae97e08ac793986be4261;hp=e294812c2baa9836f5aeff99711057bae611148e;hb=2d4e8c5f69cc694625ad95dcee554499605f823b;hpb=996b0c06e23bcb6b300d7b8799df94993692e07d

diff --git a/src/lib/filter_graph.h b/src/lib/filter_graph.h
index e294812c2..9ee628d4c 100644
--- a/src/lib/filter_graph.h
+++ b/src/lib/filter_graph.h
@@ -1,33 +1,47 @@
 /*
-    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2021 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/>.
 
 */
 
+
 /** @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"
+#include "warnings.h"
+DCPOMATIC_DISABLE_WARNINGS
+extern "C" {
+#include <libavfilter/buffersink.h>
+}
+DCPOMATIC_ENABLE_WARNINGS
+
 
+struct AVFilterContext;
+struct AVFrame;
 class Image;
-class VideoFilter;
+class Filter;
+
 
 /** @class FilterGraph
  *  @brief A graph of FFmpeg filters.
@@ -35,18 +49,28 @@ class VideoFilter;
 class FilterGraph
 {
 public:
-	FilterGraph (boost::shared_ptr<const FFmpegContent> content, libdcp::Size s, AVPixelFormat p);
-	~FilterGraph ();
-
-	bool can_process (libdcp::Size s, AVPixelFormat p) const;
-	std::list<boost::shared_ptr<Image> > process (AVFrame * frame);
-
-private:
-	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;
+	FilterGraph() = default;
+	virtual ~FilterGraph ();
+
+	FilterGraph (FilterGraph const&) = delete;
+	FilterGraph& operator== (FilterGraph const&) = delete;
+
+	void setup (std::vector<Filter const *>);
+	AVFilterContext* get (std::string name);
+
+protected:
+	virtual std::string src_parameters () const = 0;
+	virtual std::string src_name () const = 0;
+	virtual void set_parameters (AVFilterContext* context) const = 0;
+	virtual std::string sink_name () const = 0;
+
+	AVFilterGraph* _graph = nullptr;
+	/** true if this graph has no filters in, so it just copies stuff straight through */
+	bool _copy = false;
+	AVFilterContext* _buffer_src_context = nullptr;
+	AVFilterContext* _buffer_sink_context = nullptr;
+	AVFrame* _frame = nullptr;
 };
 
+
 #endif