X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_merger.h;h=d5a6ec43ad80ecd233049a971b813f8295785e33;hb=591ccb82d75070d7cba55995bab23513741ff5cf;hp=c9026b93eb99aedf131f0e68db54b148c839ee9f;hpb=e11276a822289d7d7d91a4f431f386ad28ef16dd;p=dcpomatic.git

diff --git a/src/lib/audio_merger.h b/src/lib/audio_merger.h
index c9026b93e..d5a6ec43a 100644
--- a/src/lib/audio_merger.h
+++ b/src/lib/audio_merger.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2013-2016 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2013-2017 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
@@ -17,23 +17,67 @@
 
 */
 
+/** @file  src/audio_merger.h
+ *  @brief AudioMerger class.
+ */
+
 #include "audio_buffers.h"
 #include "dcpomatic_time.h"
 #include "util.h"
 
+/** @class AudioMerger.
+ *  @brief A class that can merge audio data from many sources.
+ */
 class AudioMerger
 {
 public:
-	AudioMerger (int channels, int frame_rate);
+	explicit AudioMerger (int frame_rate);
 
-	/** Pull audio up to a given time; after this call, no more data can be pushed
-	 *  before the specified time.
-	 */
-	std::pair<boost::shared_ptr<AudioBuffers>, DCPTime> pull (DCPTime time);
-	void push (boost::shared_ptr<const AudioBuffers> audio, DCPTime time);
+	std::list<std::pair<boost::shared_ptr<AudioBuffers>, dcpomatic::DCPTime> > pull (dcpomatic::DCPTime time);
+	void push (boost::shared_ptr<const AudioBuffers> audio, dcpomatic::DCPTime time);
+	void clear ();
 
 private:
-	boost::shared_ptr<AudioBuffers> _buffers;
-	DCPTime _last_pull;
+	Frame frames (dcpomatic::DCPTime t) const;
+
+	class Buffer
+	{
+	public:
+		/** @param c Channels
+		 *  @param f Frames
+		 *  @param t Time
+		 *  @param r Frame rate.
+		 */
+		Buffer (int c, int32_t f, dcpomatic::DCPTime t, int r)
+			: audio (new AudioBuffers (c, f))
+			, time (t)
+			, frame_rate (r)
+		{}
+
+		Buffer (boost::shared_ptr<AudioBuffers> a, dcpomatic::DCPTime t, int r)
+			: audio (a)
+			, time (t)
+			, frame_rate (r)
+		{}
+
+		boost::shared_ptr<AudioBuffers> audio;
+		dcpomatic::DCPTime time;
+		int frame_rate;
+
+		dcpomatic::DCPTimePeriod period () const {
+			return dcpomatic::DCPTimePeriod (time, time + dcpomatic::DCPTime::from_frames (audio->frames(), frame_rate));
+		}
+	};
+
+	class BufferComparator
+	{
+	public:
+		bool operator() (AudioMerger::Buffer const & a, AudioMerger::Buffer const & b)
+		{
+			return a.time < b.time;
+		}
+	};
+
+	std::list<Buffer> _buffers;
 	int _frame_rate;
 };