/*
- Copyright (C) 2012-2015 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2018 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>
using std::vector;
using std::cout;
using std::max;
+using std::pair;
+using std::make_pair;
using std::list;
using boost::shared_ptr;
+using boost::optional;
+using boost::dynamic_pointer_cast;
+using dcp::raw_convert;
+using namespace dcpomatic;
-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]));
-}
+int const AudioAnalysis::_current_state_version = 3;
AudioAnalysis::AudioAnalysis (int channels)
{
cxml::Document f ("AudioAnalysis");
f.read_file (filename);
+ if (f.optional_number_child<int>("Version").get_value_or(1) < _current_state_version) {
+ /* Too old. Throw an exception so that this analysis is re-run. */
+ throw OldFormatError ("Audio analysis file is too old");
+ }
+
BOOST_FOREACH (cxml::NodePtr i, f.node_children ("Channel")) {
vector<AudioPoint> channel;
_data.push_back (channel);
}
- _peak = f.number_child<float> ("Peak");
- _peak_time = DCPTime (f.number_child<DCPTime::Type> ("PeakTime"));
+ BOOST_FOREACH (cxml::ConstNodePtr i, f.node_children ("SamplePeak")) {
+ _sample_peak.push_back (
+ PeakTime (
+ dcp::raw_convert<float>(i->content()), DCPTime(i->number_attribute<Frame>("Time"))
+ )
+ );
+ }
+
+ BOOST_FOREACH (cxml::ConstNodePtr i, f.node_children ("TruePeak")) {
+ _true_peak.push_back (dcp::raw_convert<float> (i->content ()));
+ }
+
+ _integrated_loudness = f.optional_number_child<float> ("IntegratedLoudness");
+ _loudness_range = f.optional_number_child<float> ("LoudnessRange");
+
+ _analysis_gain = f.optional_number_child<double> ("AnalysisGain");
+ _samples_per_point = f.number_child<int64_t> ("SamplesPerPoint");
+ _sample_rate = f.number_child<int64_t> ("SampleRate");
}
void
shared_ptr<xmlpp::Document> doc (new xmlpp::Document);
xmlpp::Element* root = doc->create_root_node ("AudioAnalysis");
+ root->add_child("Version")->add_child_text (raw_convert<string> (_current_state_version));
+
BOOST_FOREACH (vector<AudioPoint>& i, _data) {
xmlpp::Element* channel = root->add_child ("Channel");
BOOST_FOREACH (AudioPoint& j, i) {
}
}
- 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 ()));
+ for (size_t i = 0; i < _sample_peak.size(); ++i) {
+ xmlpp::Element* n = root->add_child("SamplePeak");
+ n->add_child_text (raw_convert<string> (_sample_peak[i].peak));
+ n->set_attribute ("Time", raw_convert<string> (_sample_peak[i].time.get()));
}
+ BOOST_FOREACH (float i, _true_peak) {
+ root->add_child("TruePeak")->add_child_text (raw_convert<string> (i));
+ }
+
+ 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 ()));
+ }
+
+ root->add_child("SamplesPerPoint")->add_child_text (raw_convert<string> (_samples_per_point));
+ root->add_child("SampleRate")->add_child_text (raw_convert<string> (_sample_rate));
+
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;
+}
+
+/** @return Peak across all channels, and the channel number it is on */
+pair<AudioAnalysis::PeakTime, int>
+AudioAnalysis::overall_sample_peak () const
+{
+ DCPOMATIC_ASSERT (!_sample_peak.empty ());
+
+ optional<PeakTime> pt;
+ int c = 0;
+
+ for (size_t i = 0; i < _sample_peak.size(); ++i) {
+ if (!pt || _sample_peak[i].peak > pt->peak) {
+ pt = _sample_peak[i];
+ c = i;
+ }
+ }
+
+ return make_pair (pt.get(), c);
+}
+
+optional<float>
+AudioAnalysis::overall_true_peak () const
+{
+ optional<float> p;
+
+ BOOST_FOREACH (float i, _true_peak) {
+ if (!p || i > *p) {
+ p = i;
+ }
+ }
+
+ return p;
+}
projects / dcpomatic.git / blobdiff