/*
- Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 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 "playlist.h"
+#include "audio_content.h"
+#include "warnings.h"
+#include <dcp/raw_convert.h>
+DCPOMATIC_DISABLE_WARNINGS
+#include <libxml++/libxml++.h>
+DCPOMATIC_ENABLE_WARNINGS
+#include <boost/filesystem.hpp>
#include <stdint.h>
#include <cmath>
-#include <cassert>
-#include <fstream>
-#include <boost/filesystem.hpp>
-#include "audio_analysis.h"
+#include <cstdio>
+#include <iostream>
+#include <inttypes.h>
-using std::ostream;
+
+using std::cout;
+using std::dynamic_pointer_cast;
using std::istream;
+using std::list;
+using std::make_pair;
+using std::make_shared;
+using std::max;
+using std::ostream;
+using std::pair;
+using std::shared_ptr;
using std::string;
-using std::ofstream;
-using std::ifstream;
using std::vector;
-using std::cout;
-using std::max;
-using std::list;
-
-AudioPoint::AudioPoint ()
-{
- for (int i = 0; i < COUNT; ++i) {
- _data[i] = 0;
- }
-}
-
-AudioPoint::AudioPoint (istream& s)
-{
- for (int i = 0; i < COUNT; ++i) {
- s >> _data[i];
- }
-}
+using boost::optional;
+using dcp::raw_convert;
+using namespace dcpomatic;
-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;
-}
+int const AudioAnalysis::_current_state_version = 3;
-void
-AudioPoint::write (ostream& s) const
-{
- for (int i = 0; i < COUNT; ++i) {
- s << _data[i] << "\n";
- }
-}
-
AudioAnalysis::AudioAnalysis (int channels)
{
_data.resize (channels);
}
+
AudioAnalysis::AudioAnalysis (boost::filesystem::path filename)
{
- ifstream f (filename.string().c_str ());
+ cxml::Document f ("AudioAnalysis");
+ f.read_file (filename);
- int channels;
- f >> channels;
- _data.resize (channels);
+ 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");
+ }
- for (int i = 0; i < channels; ++i) {
- int points;
- f >> points;
- for (int j = 0; j < points; ++j) {
- _data[i].push_back (AudioPoint (f));
+ for (auto i: f.node_children("Channel")) {
+ vector<AudioPoint> channel;
+
+ for (auto j: i->node_children("Point")) {
+ channel.push_back (AudioPoint(j));
}
+
+ _data.push_back (channel);
}
+
+ for (auto i: f.node_children ("SamplePeak")) {
+ _sample_peak.push_back (
+ PeakTime(
+ dcp::raw_convert<float>(i->content()), DCPTime(i->number_attribute<Frame>("Time"))
+ )
+ );
+ }
+
+ for (auto 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");
+
+ _leqm = f.optional_number_child<double>("Leqm");
}
+
void
AudioAnalysis::add_point (int c, AudioPoint const & p)
{
- assert (c < channels ());
+ DCPOMATIC_ASSERT (c < channels ());
_data[c].push_back (p);
}
+
AudioPoint
AudioAnalysis::get_point (int c, int p) const
{
- assert (p < points (c));
+ DCPOMATIC_ASSERT (p < points(c));
return _data[c][p];
}
+
int
AudioAnalysis::channels () const
{
return _data.size ();
}
+
int
AudioAnalysis::points (int c) const
{
- assert (c < channels ());
+ DCPOMATIC_ASSERT (c < channels());
return _data[c].size ();
}
+
void
AudioAnalysis::write (boost::filesystem::path filename)
{
- string tmp = filename.string() + ".tmp";
-
- ofstream f (tmp.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);
+ auto doc = make_shared<xmlpp::Document>();
+ xmlpp::Element* root = doc->create_root_node ("AudioAnalysis");
+
+ root->add_child("Version")->add_child_text(raw_convert<string>(_current_state_version));
+
+ for (auto& i: _data) {
+ auto channel = root->add_child ("Channel");
+ for (auto& j: i) {
+ j.as_xml (channel->add_child ("Point"));
}
}
- f.close ();
- boost::filesystem::rename (tmp, filename);
+ for (size_t i = 0; i < _sample_peak.size(); ++i) {
+ auto 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()));
+ }
+
+ for (auto 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));
+
+ if (_leqm) {
+ root->add_child("Leqm")->add_child_text(raw_convert<string>(*_leqm));
+ }
+
+ 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;
+
+ for (auto i: _true_peak) {
+ if (!p || i > *p) {
+ p = i;
+ }
+ }
+
+ return p;
+}
+
projects / dcpomatic.git / blobdiff