X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fdecoder.h;h=2a3b56c637be9f5135d1aa933369e077f7ea30a6;hb=13aae5d8ff27886656ab7ea3ef1194987954bb3f;hp=0ec73ba91f47147af16b057dcef31004a0b75c47;hpb=1dcfb3a26085ebb3703f40e2f51e43ce3d98be50;p=dcpomatic.git

diff --git a/src/lib/decoder.h b/src/lib/decoder.h
index 0ec73ba91..2a3b56c63 100644
--- a/src/lib/decoder.h
+++ b/src/lib/decoder.h
@@ -1,19 +1,20 @@
 /*
-    Copyright (C) 2012-2013 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
+    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/>.
 
 */
 
@@ -24,14 +25,14 @@
 #ifndef DCPOMATIC_DECODER_H
 #define DCPOMATIC_DECODER_H
 
-#include <boost/shared_ptr.hpp>
-#include <boost/weak_ptr.hpp>
-#include <boost/utility.hpp>
 #include "types.h"
 #include "dcpomatic_time.h"
+#include <boost/utility.hpp>
 
 class Decoded;
-class Film;
+class VideoDecoder;
+class AudioDecoder;
+class SubtitleDecoder;
 
 /** @class Decoder.
  *  @brief Parent class for decoders of content.
@@ -41,16 +42,28 @@ class Decoder : public boost::noncopyable
 public:
 	virtual ~Decoder () {}
 
-protected:	
+	boost::shared_ptr<VideoDecoder> video;
+	boost::shared_ptr<AudioDecoder> audio;
+	boost::shared_ptr<SubtitleDecoder> subtitle;
+
+	enum PassReason {
+		PASS_REASON_VIDEO,
+		PASS_REASON_AUDIO,
+		PASS_REASON_SUBTITLE
+	};
+
 	/** 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 get close to
-	 *  the request.  Note that seeking to time t may mean that
-	 *  the next pass() yields, for example, audio at time t and then
-	 *  video before it.
+	 *  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;
-	virtual bool pass () = 0;
+
+	/** @return true if this decoder has already returned all its data and will give no more */
+	virtual bool pass (PassReason, bool accurate) = 0;
 };
 
 #endif