X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_buffers.h;h=8cd67aaa729d52afc42a8ff5b11f3d42327de414;hb=04eebe07e2f64bd15f6887a10ab51fb92c52901a;hp=47b8145a1de2892e6126ca3cea8738a034514eff;hpb=883d885dc8690519d205c8baa275385af8a39f4b;p=dcpomatic.git

diff --git a/src/lib/audio_buffers.h b/src/lib/audio_buffers.h
index 47b8145a1..8cd67aaa7 100644
--- a/src/lib/audio_buffers.h
+++ b/src/lib/audio_buffers.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2014 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
@@ -17,6 +17,13 @@
 
 */
 
+/** @file  src/lib/audio_buffers.h
+ *  @brief AudioBuffers class.
+ */
+
+#ifndef DCPOMATIC_AUDIO_BUFFERS_H
+#define DCPOMATIC_AUDIO_BUFFERS_H
+
 #include <boost/shared_ptr.hpp>
 
 /** @class AudioBuffers
@@ -30,6 +37,11 @@ public:
 	AudioBuffers (boost::shared_ptr<const AudioBuffers>);
 	~AudioBuffers ();
 
+	AudioBuffers & operator= (AudioBuffers const &);
+
+	boost::shared_ptr<AudioBuffers> clone () const;
+	boost::shared_ptr<AudioBuffers> channel (int) const;
+
 	void ensure_size (int);
 
 	float** data () const {
@@ -50,13 +62,20 @@ public:
 
 	void make_silent ();
 	void make_silent (int c);
+	void make_silent (int from, int frames);
+
+	void apply_gain (float);
 
 	void copy_from (AudioBuffers const * from, int frames_to_copy, int read_offset, int write_offset);
+	void copy_channel_from (AudioBuffers const * from, int from_channel, int to_channel);
 	void move (int from, int to, int frames);
-	void accumulate_channel (AudioBuffers const *, int, int);
+	void accumulate_channel (AudioBuffers const * from, int from_channel, int to_channel, float gain = 1);
 	void accumulate_frames (AudioBuffers const *, int read_offset, int write_offset, int frames);
 
 private:
+	void allocate (int, int);
+	void deallocate ();
+	
 	/** Number of channels */
 	int _channels;
 	/** Number of frames (where a frame is one sample across all channels) */
@@ -66,3 +85,5 @@ private:
 	/** Audio data (so that, e.g. _data[2][6] is channel 2, sample 6) */
 	float** _data;
 };
+
+#endif