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 #include "audio_analysis.h"
23 #include "raw_convert.h"
24 #include <libxml++/libxml++.h>
25 #include <boost/filesystem.hpp>
26 #include <boost/foreach.hpp>
40 using boost::shared_ptr;
42 AudioAnalysis::AudioAnalysis (int channels)
44 _data.resize (channels);
47 AudioAnalysis::AudioAnalysis (boost::filesystem::path filename)
49 cxml::Document f ("AudioAnalysis");
50 f.read_file (filename);
52 BOOST_FOREACH (cxml::NodePtr i, f.node_children ("Channel")) {
53 vector<AudioPoint> channel;
55 BOOST_FOREACH (cxml::NodePtr j, i->node_children ("Point")) {
56 channel.push_back (AudioPoint (j));
59 _data.push_back (channel);
62 _peak = f.number_child<float> ("Peak");
63 _peak_time = DCPTime (f.number_child<DCPTime::Type> ("PeakTime"));
64 _analysis_gain = f.optional_number_child<double> ("AnalysisGain");
68 AudioAnalysis::add_point (int c, AudioPoint const & p)
70 DCPOMATIC_ASSERT (c < channels ());
71 _data[c].push_back (p);
75 AudioAnalysis::get_point (int c, int p) const
77 DCPOMATIC_ASSERT (p < points (c));
82 AudioAnalysis::channels () const
88 AudioAnalysis::points (int c) const
90 DCPOMATIC_ASSERT (c < channels ());
91 return _data[c].size ();
95 AudioAnalysis::write (boost::filesystem::path filename)
97 shared_ptr<xmlpp::Document> doc (new xmlpp::Document);
98 xmlpp::Element* root = doc->create_root_node ("AudioAnalysis");
100 BOOST_FOREACH (vector<AudioPoint>& i, _data) {
101 xmlpp::Element* channel = root->add_child ("Channel");
102 BOOST_FOREACH (AudioPoint& j, i) {
103 j.as_xml (channel->add_child ("Point"));
108 root->add_child("Peak")->add_child_text (raw_convert<string> (_peak.get ()));
109 root->add_child("PeakTime")->add_child_text (raw_convert<string> (_peak_time.get().get ()));
112 if (_analysis_gain) {
113 root->add_child("AnalysisGain")->add_child_text (raw_convert<string> (_analysis_gain.get ()));
116 doc->write_to_file_formatted (filename.string ());