2 Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 /** @file src/lib/audio_analysis.h
21 * @brief AudioAnalysis and AudioPoint classes.
24 #ifndef DCPOMATIC_AUDIO_ANALYSIS_H
25 #define DCPOMATIC_AUDIO_ANALYSIS_H
27 #include <boost/filesystem.hpp>
31 * @brief A single point of an audio analysis for one portion of one channel.
44 AudioPoint (AudioPoint const &);
45 AudioPoint& operator= (AudioPoint const &);
47 void write (FILE *) const;
49 float& operator[] (int t) {
57 /** @class AudioAnalysis
58 * @brief An analysis of the audio data in a piece of AudioContent.
60 * This is a set of AudioPoints for each channel. The AudioPoints
61 * each represent some measurement of the audio over a portion of the
62 * content. For example each AudioPoint may give the RMS level of
63 * a 1-minute portion of the audio.
65 class AudioAnalysis : public boost::noncopyable
68 AudioAnalysis (int c);
69 AudioAnalysis (boost::filesystem::path);
71 void add_point (int c, AudioPoint const & p);
73 AudioPoint get_point (int c, int p) const;
74 int points (int c) const;
75 int channels () const;
77 void write (boost::filesystem::path);
80 std::vector<std::vector<AudioPoint> > _data;