2 Copyright (C) 2012-2015 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 #ifndef DCPOMATIC_AUDIO_ANALYSIS_H
21 #define DCPOMATIC_AUDIO_ANALYSIS_H
23 #include "dcpomatic_time.h"
24 #include "audio_point.h"
25 #include <libcxml/cxml.h>
26 #include <boost/optional.hpp>
27 #include <boost/filesystem.hpp>
36 class AudioAnalysis : public boost::noncopyable
39 AudioAnalysis (int c);
40 AudioAnalysis (boost::filesystem::path);
42 void add_point (int c, AudioPoint const & p);
44 void set_sample_peak (float peak, DCPTime time) {
46 _sample_peak_time = time;
49 void set_true_peak (float peak) {
53 void set_integrated_loudness (float l) {
54 _integrated_loudness = l;
57 void set_loudness_range (float r) {
61 AudioPoint get_point (int c, int p) const;
62 int points (int c) const;
63 int channels () const;
65 boost::optional<float> sample_peak () const {
69 boost::optional<DCPTime> sample_peak_time () const {
70 return _sample_peak_time;
73 boost::optional<float> true_peak () const {
77 boost::optional<float> integrated_loudness () const {
78 return _integrated_loudness;
81 boost::optional<float> loudness_range () const {
82 return _loudness_range;
85 boost::optional<double> analysis_gain () const {
86 return _analysis_gain;
89 void set_analysis_gain (double gain) {
90 _analysis_gain = gain;
93 void write (boost::filesystem::path);
95 float gain_correction (boost::shared_ptr<const Playlist> playlist);
98 std::vector<std::vector<AudioPoint> > _data;
99 boost::optional<float> _sample_peak;
100 boost::optional<DCPTime> _sample_peak_time;
101 boost::optional<float> _true_peak;
102 boost::optional<float> _integrated_loudness;
103 boost::optional<float> _loudness_range;
104 /** If this analysis was run on a single piece of
105 * content we store its gain in dB when the analysis
108 boost::optional<double> _analysis_gain;