/*
- Copyright (C) 2012-2014 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2015 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
*/
-/** @file src/lib/audio_analysis.h
- * @brief AudioAnalysis and AudioPoint classes.
- */
-
#ifndef DCPOMATIC_AUDIO_ANALYSIS_H
#define DCPOMATIC_AUDIO_ANALYSIS_H
-#include <vector>
-#include <list>
+#include "dcpomatic_time.h"
+#include "audio_point.h"
+#include <libcxml/cxml.h>
+#include <boost/optional.hpp>
#include <boost/filesystem.hpp>
+#include <vector>
-/** @class AudioPoint
- * @brief A single point of an audio analysis for one portion of one channel.
- */
-class AudioPoint
-{
-public:
- enum Type {
- PEAK,
- RMS,
- COUNT
- };
-
- AudioPoint ();
- AudioPoint (FILE *);
- AudioPoint (AudioPoint const &);
- AudioPoint& operator= (AudioPoint const &);
-
- void write (FILE *) const;
-
- float& operator[] (int t) {
- return _data[t];
- }
+namespace xmlpp {
+ class Element;
+}
-private:
- float _data[COUNT];
-};
+class Playlist;
-/** @class AudioAnalysis
- * @brief An analysis of the audio data in a piece of AudioContent.
- *
- * This is a set of AudioPoints for each channel. The AudioPoints
- * each represent some measurement of the audio over a portion of the
- * content. For example each AudioPoint may give the RMS level of
- * a 1-minute portion of the audio.
- */
class AudioAnalysis : public boost::noncopyable
{
public:
AudioAnalysis (boost::filesystem::path);
void add_point (int c, AudioPoint const & p);
-
+ void set_peak (float peak, DCPTime time) {
+ _peak = peak;
+ _peak_time = time;
+ }
+
AudioPoint get_point (int c, int p) const;
int points (int c) const;
int channels () const;
+ boost::optional<float> peak () const {
+ return _peak;
+ }
+
+ boost::optional<DCPTime> peak_time () const {
+ return _peak_time;
+ }
+
+ boost::optional<double> analysis_gain () const {
+ return _analysis_gain;
+ }
+
+ void set_analysis_gain (double gain) {
+ _analysis_gain = gain;
+ }
+
void write (boost::filesystem::path);
+ float gain_correction (boost::shared_ptr<const Playlist> playlist);
+
private:
std::vector<std::vector<AudioPoint> > _data;
+ boost::optional<float> _peak;
+ boost::optional<DCPTime> _peak_time;
+ /** If this analysis was run on a single piece of
+ * content we store its gain in dB when the analysis
+ * happened.
+ */
+ boost::optional<double> _analysis_gain;
};
#endif