X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Faudio_analysis.cc;h=1e5d089257d86c4f4aed253f2616c67af2d6b00b;hb=73654117144c6de0ec4efe39ddc88485df546cc9;hp=7e1dc6e7884f619765c4a927bb31af85ddde9871;hpb=e60bb3e51bd1508b149e6b8f6608f09b5196ae26;p=dcpomatic.git

diff --git a/src/lib/audio_analysis.cc b/src/lib/audio_analysis.cc
index 7e1dc6e78..1e5d08925 100644
--- a/src/lib/audio_analysis.cc
+++ b/src/lib/audio_analysis.cc
@@ -1,26 +1,29 @@
 /*
     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 "audio_analysis.h"
 #include "cross.h"
 #include "util.h"
-#include "raw_convert.h"
+#include "playlist.h"
+#include "audio_content.h"
+#include <dcp/raw_convert.h>
 #include <libxml++/libxml++.h>
 #include <boost/filesystem.hpp>
 #include <boost/foreach.hpp>
@@ -38,47 +41,8 @@ using std::cout;
 using std::max;
 using std::list;
 using boost::shared_ptr;
-
-AudioPoint::AudioPoint ()
-{
-	for (int i = 0; i < COUNT; ++i) {
-		_data[i] = 0;
-	}
-}
-
-AudioPoint::AudioPoint (cxml::ConstNodePtr node)
-{
-	_data[PEAK] = node->number_child<float> ("Peak");
-	_data[RMS] = node->number_child<float> ("RMS");
-}
-
-AudioPoint::AudioPoint (AudioPoint const & other)
-{
-	for (int i = 0; i < COUNT; ++i) {
-		_data[i] = other._data[i];
-	}
-}
-
-AudioPoint &
-AudioPoint::operator= (AudioPoint const & other)
-{
-	if (this == &other) {
-		return *this;
-	}
-
-	for (int i = 0; i < COUNT; ++i) {
-		_data[i] = other._data[i];
-	}
-
-	return *this;
-}
-
-void
-AudioPoint::as_xml (xmlpp::Element* parent) const
-{
-	parent->add_child ("Peak")->add_child_text (raw_convert<string> (_data[PEAK]));
-	parent->add_child ("RMS")->add_child_text (raw_convert<string> (_data[RMS]));
-}
+using boost::dynamic_pointer_cast;
+using dcp::raw_convert;
 
 AudioAnalysis::AudioAnalysis (int channels)
 {
@@ -100,8 +64,23 @@ AudioAnalysis::AudioAnalysis (boost::filesystem::path filename)
 		_data.push_back (channel);
 	}
 
-	_peak = f.number_child<float> ("Peak");
-	_peak_time = DCPTime (f.number_child<DCPTime::Type> ("PeakTime"));
+	_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
@@ -144,10 +123,41 @@ AudioAnalysis::write (boost::filesystem::path filename)
 		}
 	}
 
-	if (_peak) {
-		root->add_child("Peak")->add_child_text (raw_convert<string> (_peak.get ()));
-		root->add_child("PeakTime")->add_child_text (raw_convert<string> (_peak_time.get().get ()));
+	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;
+}