/*
- Copyright (C) 2012 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
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
-#include <stdint.h>
-#include <cassert>
-#include <fstream>
#include "audio_analysis.h"
+#include "cross.h"
+#include "util.h"
+#include "raw_convert.h"
+#include "playlist.h"
+#include "audio_content.h"
+#include <libxml++/libxml++.h>
+#include <boost/filesystem.hpp>
+#include <boost/foreach.hpp>
+#include <stdint.h>
+#include <cmath>
+#include <cstdio>
+#include <iostream>
+#include <inttypes.h>
using std::ostream;
+using std::istream;
using std::string;
-using std::ofstream;
using std::vector;
+using std::cout;
+using std::max;
+using std::list;
+using boost::shared_ptr;
+using boost::dynamic_pointer_cast;
-AudioPoint::AudioPoint ()
+AudioAnalysis::AudioAnalysis (int channels)
{
- for (int i = 0; i < COUNT; ++i) {
- _data[i] = 0;
- }
+ _data.resize (channels);
}
-void
-AudioPoint::write (ostream& s) const
+AudioAnalysis::AudioAnalysis (boost::filesystem::path filename)
{
- for (int i = 0; i < COUNT; ++i) {
- s << _data[i] << "\n";
+ cxml::Document f ("AudioAnalysis");
+ f.read_file (filename);
+
+ BOOST_FOREACH (cxml::NodePtr i, f.node_children ("Channel")) {
+ vector<AudioPoint> channel;
+
+ BOOST_FOREACH (cxml::NodePtr j, i->node_children ("Point")) {
+ channel.push_back (AudioPoint (j));
+ }
+
+ _data.push_back (channel);
}
-}
-
-AudioAnalysis::AudioAnalysis (int channels)
-{
- _data.resize (channels);
+ _sample_peak = f.optional_number_child<float> ("Peak");
+ if (!_sample_peak) {
+ /* New key */
+ _sample_peak = f.optional_number_child<float> ("SamplePeak");
+ }
+
+ if (f.optional_number_child<DCPTime::Type> ("PeakTime")) {
+ _sample_peak_time = DCPTime (f.number_child<DCPTime::Type> ("PeakTime"));
+ } else if (f.optional_number_child<DCPTime::Type> ("SamplePeakTime")) {
+ _sample_peak_time = DCPTime (f.number_child<DCPTime::Type> ("SamplePeakTime"));
+ }
+
+ _true_peak = f.optional_number_child<float> ("TruePeak");
+ _integrated_loudness = f.optional_number_child<float> ("IntegratedLoudness");
+ _loudness_range = f.optional_number_child<float> ("LoudnessRange");
+
+ _analysis_gain = f.optional_number_child<double> ("AnalysisGain");
}
void
AudioAnalysis::add_point (int c, AudioPoint const & p)
{
- assert (c < int (_data.size ()));
+ DCPOMATIC_ASSERT (c < channels ());
_data[c].push_back (p);
}
+AudioPoint
+AudioAnalysis::get_point (int c, int p) const
+{
+ DCPOMATIC_ASSERT (p < points (c));
+ return _data[c][p];
+}
+
+int
+AudioAnalysis::channels () const
+{
+ return _data.size ();
+}
+
+int
+AudioAnalysis::points (int c) const
+{
+ DCPOMATIC_ASSERT (c < channels ());
+ return _data[c].size ();
+}
+
void
-AudioAnalysis::write (string filename)
+AudioAnalysis::write (boost::filesystem::path filename)
{
- ofstream f (filename.c_str ());
- f << _data.size() << "\n";
- for (vector<vector<AudioPoint> >::iterator i = _data.begin(); i != _data.end(); ++i) {
- f << i->size () << "\n";
- for (vector<AudioPoint>::iterator j = i->begin(); j != i->end(); ++j) {
- j->write (f);
+ shared_ptr<xmlpp::Document> doc (new xmlpp::Document);
+ xmlpp::Element* root = doc->create_root_node ("AudioAnalysis");
+
+ BOOST_FOREACH (vector<AudioPoint>& i, _data) {
+ xmlpp::Element* channel = root->add_child ("Channel");
+ BOOST_FOREACH (AudioPoint& j, i) {
+ j.as_xml (channel->add_child ("Point"));
}
}
+
+ if (_sample_peak) {
+ root->add_child("SamplePeak")->add_child_text (raw_convert<string> (_sample_peak.get ()));
+ root->add_child("SamplePeakTime")->add_child_text (raw_convert<string> (_sample_peak_time.get().get ()));
+ }
+
+ if (_true_peak) {
+ root->add_child("TruePeak")->add_child_text (raw_convert<string> (_true_peak.get ()));
+ }
+
+ if (_integrated_loudness) {
+ root->add_child("IntegratedLoudness")->add_child_text (raw_convert<string> (_integrated_loudness.get ()));
+ }
+
+ if (_loudness_range) {
+ root->add_child("LoudnessRange")->add_child_text (raw_convert<string> (_loudness_range.get ()));
+ }
+
+ if (_analysis_gain) {
+ root->add_child("AnalysisGain")->add_child_text (raw_convert<string> (_analysis_gain.get ()));
+ }
+
+ doc->write_to_file_formatted (filename.string ());
+}
+
+float
+AudioAnalysis::gain_correction (shared_ptr<const Playlist> playlist)
+{
+ if (playlist->content().size() == 1 && analysis_gain ()) {
+ /* In this case we know that the analysis was of a single piece of content and
+ we know that content's gain when the analysis was run. Hence we can work out
+ what correction is now needed to make it look `right'.
+ */
+ DCPOMATIC_ASSERT (playlist->content().front()->audio);
+ return playlist->content().front()->audio->gain() - analysis_gain().get ();
+ }
+
+ return 0.0f;
}