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 AudioPoint::AudioPoint ()
44 for (int i = 0; i < COUNT; ++i) {
49 AudioPoint::AudioPoint (cxml::ConstNodePtr node)
51 _data[PEAK] = node->number_child<float> ("Peak");
52 _data[RMS] = node->number_child<float> ("RMS");
55 AudioPoint::AudioPoint (AudioPoint const & other)
57 for (int i = 0; i < COUNT; ++i) {
58 _data[i] = other._data[i];
63 AudioPoint::operator= (AudioPoint const & other)
69 for (int i = 0; i < COUNT; ++i) {
70 _data[i] = other._data[i];
77 AudioPoint::as_xml (xmlpp::Element* parent) const
79 parent->add_child ("Peak")->add_child_text (raw_convert<string> (_data[PEAK]));
80 parent->add_child ("RMS")->add_child_text (raw_convert<string> (_data[RMS]));
83 AudioAnalysis::AudioAnalysis (int channels)
85 _data.resize (channels);
88 AudioAnalysis::AudioAnalysis (boost::filesystem::path filename)
90 cxml::Document f ("AudioAnalysis");
91 f.read_file (filename);
93 BOOST_FOREACH (cxml::NodePtr i, f.node_children ("Channel")) {
94 vector<AudioPoint> channel;
96 BOOST_FOREACH (cxml::NodePtr j, i->node_children ("Point")) {
97 channel.push_back (AudioPoint (j));
100 _data.push_back (channel);
103 _peak = f.number_child<float> ("Peak");
104 _peak_time = DCPTime (f.number_child<DCPTime::Type> ("PeakTime"));
108 AudioAnalysis::add_point (int c, AudioPoint const & p)
110 DCPOMATIC_ASSERT (c < channels ());
111 _data[c].push_back (p);
115 AudioAnalysis::get_point (int c, int p) const
117 DCPOMATIC_ASSERT (p < points (c));
122 AudioAnalysis::channels () const
124 return _data.size ();
128 AudioAnalysis::points (int c) const
130 DCPOMATIC_ASSERT (c < channels ());
131 return _data[c].size ();
135 AudioAnalysis::write (boost::filesystem::path filename)
137 shared_ptr<xmlpp::Document> doc (new xmlpp::Document);
138 xmlpp::Element* root = doc->create_root_node ("AudioAnalysis");
140 BOOST_FOREACH (vector<AudioPoint>& i, _data) {
141 xmlpp::Element* channel = root->add_child ("Channel");
142 BOOST_FOREACH (AudioPoint& j, i) {
143 j.as_xml (channel->add_child ("Point"));
148 root->add_child("Peak")->add_child_text (raw_convert<string> (_peak.get ()));
149 root->add_child("PeakTime")->add_child_text (raw_convert<string> (_peak_time.get().get ()));
152 doc->write_to_file_formatted (filename.string ());