Give DCPDecoder its own ::position which just returns its internal

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

diff --git a/src/lib/decoder.h b/src/lib/decoder.h
index 8378373c6e0e29c8c4ed45943a30a6817651ed2e..93c212b344c97c2b9277e4be45a6a2d0d8209115 100644 (file)
--- a/src/lib/decoder.h
+++ b/src/lib/decoder.h
@@ -1,19 +1,20 @@
 /*
-    Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2018 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/>.
 
 */
 
@@ -25,10 +26,15 @@
 #define DCPOMATIC_DECODER_H
 
 #include "types.h"
+#include "film.h"
 #include "dcpomatic_time.h"
 #include <boost/utility.hpp>
 
 class Decoded;
+class VideoDecoder;
+class AudioDecoder;
+class TextDecoder;
+class DecoderPart;
 
 /** @class Decoder.
  *  @brief Parent class for decoders of content.
@@ -36,22 +42,28 @@ class Decoded;
 class Decoder : public boost::noncopyable
 {
 public:
+       Decoder (boost::weak_ptr<const Film> film);
        virtual ~Decoder () {}
 
-protected:
-       friend class AudioDecoderStream;
-
-       /** Seek so that the next pass() will yield the next thing
-        *  (video/sound frame, subtitle etc.) at or after the requested
-        *  time.  Pass accurate = true to try harder to ensure that, at worst,
-        *  the next thing we yield comes before `time'.  This may entail
-        *  seeking some way before `time' to be on the safe side.
-        *  Alternatively, if seeking is 100% accurate for this decoder,
-        *  it may seek to just the right spot.
-        */
-       virtual void seek (ContentTime time, bool accurate) = 0;
+       boost::shared_ptr<VideoDecoder> video;
+       boost::shared_ptr<AudioDecoder> audio;
+       std::list<boost::shared_ptr<TextDecoder> > text;
 
+       boost::shared_ptr<TextDecoder> only_text () const;
+
+       /** Do some decoding and perhaps emit video, audio or subtitle data.
+        *  @return true if this decoder will emit no more data unless a seek() happens.
+        */
        virtual bool pass () = 0;
+       virtual void seek (ContentTime time, bool accurate);
+
+       virtual ContentTime position () const;
+
+protected:
+       boost::shared_ptr<const Film> film () const;
+
+private:
+       boost::weak_ptr<const Film> _film;
 };
 
 #endif