Various work on better seeking (and seeking of audio).

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

diff --git a/src/lib/decoder.h b/src/lib/decoder.h
index e4693fb6df76fa8db8558460c2963d7c5916be96..908d3aae51c3948803199af980ae4f7bb1e1f157 100644 (file)
--- a/src/lib/decoder.h
+++ b/src/lib/decoder.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2013 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
@@ -21,55 +21,45 @@
  *  @brief Parent class for decoders of content.
  */
 
-#ifndef DVDOMATIC_DECODER_H
-#define DVDOMATIC_DECODER_H
+#ifndef DCPOMATIC_DECODER_H
+#define DCPOMATIC_DECODER_H
 
-#include <vector>
-#include <string>
-#include <stdint.h>
 #include <boost/shared_ptr.hpp>
-#include <boost/signals2.hpp>
-#include "util.h"
-#include "stream.h"
-#include "video_source.h"
-#include "audio_source.h"
+#include <boost/weak_ptr.hpp>
+#include <boost/utility.hpp>
+#include "types.h"
 
-class Job;
-class Options;
-class Image;
-class Log;
-class DelayLine;
-class TimedSubtitle;
-class Subtitle;
 class Film;
-class FilterGraph;
 
 /** @class Decoder.
  *  @brief Parent class for decoders of content.
- *
- *  These classes can be instructed run through their content (by
- *  calling ::go), and they emit signals when video or audio data is
- *  ready for something else to process.
  */
-class Decoder
+class Decoder : public boost::noncopyable
 {
 public:
-       Decoder (boost::shared_ptr<Film>, boost::shared_ptr<const Options>, Job *);
+       Decoder (boost::shared_ptr<const Film>);
        virtual ~Decoder () {}
 
-       virtual bool pass () = 0;
-       /** Seek.
-        *  @return true on error.
+       /** Perform one decode pass of the content, which may or may not
+        *  cause the object to emit some data.
         */
-       virtual bool seek (SourceFrame);
+       virtual void pass () = 0;
+
+       /** 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.
+        */
+       virtual void seek (Time time, bool accurate) = 0;
+
+       virtual bool done () const = 0;
 
 protected:
-       /** our Film */
-       boost::shared_ptr<Film> _film;
-       /** our options */
-       boost::shared_ptr<const Options> _opt;
-       /** associated Job, or 0 */
-       Job* _job;
+
+       virtual void flush () {};
+       
+       /** The Film that we are decoding in */
+       boost::weak_ptr<const Film> _film;
 };
 
 #endif