Basic stuff to analyse audio (job).

1 files changed, 69 insertions, 0 deletions

diff --git a/src/lib/audio_analysis.cc b/src/lib/audio_analysis.cc
new file mode 100644
index 000000000..4a710f4c1
--- /dev/null
+++ b/src/lib/audio_analysis.cc
@@ -0,0 +1,69 @@
+/*
+    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.
+
+*/
+
+#include <stdint.h>
+#include <cassert>
+#include <fstream>
+#include "audio_analysis.h"
+
+using std::ostream;
+using std::string;
+using std::ofstream;
+using std::vector;
+
+AudioPoint::AudioPoint ()
+{
+	for (int i = 0; i < COUNT; ++i) {
+		_data[i] = 0;
+	}
+}
+
+void
+AudioPoint::write (ostream& s) const
+{
+	for (int i = 0; i < COUNT; ++i) {
+		s << _data[i] << "\n";
+	}
+}
+	
+
+AudioAnalysis::AudioAnalysis (int channels)
+{
+	_data.resize (channels);
+}
+
+void
+AudioAnalysis::add_point (int c, AudioPoint const & p)
+{
+	assert (c < int (_data.size ()));
+	_data[c].push_back (p);
+}
+
+void
+AudioAnalysis::write (string filename)
+{
+	ofstream f (filename.c_str ());
+	f << _data.size() << "\n";
+	for (vector<vector<AudioPoint> >::iterator i = _data.begin(); i != _data.end(); ++i) {
+		f << i->size () << "\n";
+		for (vector<AudioPoint>::iterator j = i->begin(); j != i->end(); ++j) {
+			j->write (f);
+		}
+	}
+}