Basic stuff to analyse audio (job).

1 files changed, 59 insertions, 0 deletions

diff --git a/src/lib/audio_analysis.h b/src/lib/audio_analysis.h
new file mode 100644
index 000000000..1c668b9c2
--- /dev/null
+++ b/src/lib/audio_analysis.h
@@ -0,0 +1,59 @@
+/*
+    Copyright (C) 2012 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
+    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,
+    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.
+
+*/
+
+#ifndef DVDOMATIC_AUDIO_ANALYSIS_H
+#define DVDOMATIC_AUDIO_ANALYSIS_H
+
+#include <iostream>
+#include <vector>
+
+class AudioPoint
+{
+public:
+	enum Type {
+		PEAK,
+		RMS,
+		COUNT
+	};
+
+	AudioPoint ();
+
+	void write (std::ostream &) const;
+	
+	float& operator[] (Type t) {
+		return _data[t];
+	}
+
+private:
+	float _data[COUNT];
+};
+
+class AudioAnalysis
+{
+public:
+	AudioAnalysis (int c);
+
+	void add_point (int c, AudioPoint const & p);
+	void write (std::string);
+
+private:
+	std::vector<std::vector<AudioPoint> > _data;
+};
+
+#endif