Split FilterGraph into that and VideoFilterGraph.

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

diff --git a/src/lib/filter_graph.h b/src/lib/filter_graph.h
index 2138943e42b6e3e6ef11ba4967f0c85f0755d618..07334063780b31fff1dcfb054bf35dbe2f86a383 100644 (file)
--- a/src/lib/filter_graph.h
+++ b/src/lib/filter_graph.h
@@ -1,5 +1,5 @@
 /*
-    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
@@ -21,52 +21,39 @@
  *  @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 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 *>);
 
-private:
+protected:
+       virtual std::string src_parameters () const = 0;
+       virtual AVBufferSinkParams* sink_parameters () const = 0;
+
+       /** 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