X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=src%2Flib%2Fdecoder.h;h=1b330316ecc7c5c8812720ba4c8f1835f12fda9c;hp=d2302d7a20d3057bcfde04fd9df1b11934f45420;hb=df17bbd25da69fc38eb2dcd8b4a2531cf0bab0bc;hpb=24e890682b3f2aa211277ad8b6b3591f2026d4be

diff --git a/src/lib/decoder.h b/src/lib/decoder.h
index d2302d7a2..1b330316e 100644
--- a/src/lib/decoder.h
+++ b/src/lib/decoder.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
 
     This file is part of DCP-o-matic.
 
@@ -32,7 +32,8 @@
 class Decoded;
 class VideoDecoder;
 class AudioDecoder;
-class SubtitleDecoder;
+class TextDecoder;
+class DecoderPart;
 
 /** @class Decoder.
  *  @brief Parent class for decoders of content.
@@ -44,42 +45,17 @@ public:
 
 	boost::shared_ptr<VideoDecoder> video;
 	boost::shared_ptr<AudioDecoder> audio;
-	boost::shared_ptr<SubtitleDecoder> subtitle;
+	std::list<boost::shared_ptr<TextDecoder> > caption;
 
-	enum PassReason {
-		PASS_REASON_VIDEO,
-		PASS_REASON_AUDIO,
-		PASS_REASON_SUBTITLE
-	};
+	boost::shared_ptr<TextDecoder> only_caption () const;
 
-	void maybe_seek_video (ContentTime time, bool accurate);
-	void maybe_seek_audio (ContentTime time, bool accurate);
-	void maybe_seek_subtitle (ContentTime time, bool accurate);
-
-	/** @return true if this decoder has already returned all its data and will give no more */
-	virtual bool pass (PassReason, bool accurate) = 0;
-
-	/** Ensure that any future get() calls return data that reflect
-	 *  changes in our content's settings.
+	/** 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 void reset () {}
+	virtual bool pass () = 0;
+	virtual void seek (ContentTime time, bool accurate);
 
-protected:
-	boost::optional<ContentTime> _video_position;
-	boost::optional<ContentTime> _audio_position;
-	boost::optional<ContentTime> _subtitle_position;
-
-private:
-	/** 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;
-	void maybe_seek (boost::optional<ContentTime>& position, ContentTime time, bool accurate);
+	ContentTime position () const;
 };
 
 #endif