Add LEQ(m) when analysing audio (#1382).

[dcpomatic.git] / src / lib / filter_graph.h

diff --git a/src/lib/filter_graph.h b/src/lib/filter_graph.h
index c6ae15e48486b9c759099ead2bc437b65a045985..10298cb74297babfebcb03d0ddc377d77591d482 100644 (file)
--- a/src/lib/filter_graph.h
+++ b/src/lib/filter_graph.h
@@ -1,25 +1,64 @@
-#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