X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=src%2Flib%2Faudio_analysis.cc;h=41591b062c0f610ef5aa1e0c45db90fa54b620e4;hp=7e1dc6e7884f619765c4a927bb31af85ddde9871;hb=dd9be86db6cde0afa5da0d1d1ac43b42e05dca26;hpb=e60bb3e51bd1508b149e6b8f6608f09b5196ae26 diff --git a/src/lib/audio_analysis.cc b/src/lib/audio_analysis.cc index 7e1dc6e78..41591b062 100644 --- a/src/lib/audio_analysis.cc +++ b/src/lib/audio_analysis.cc @@ -1,27 +1,33 @@ /* - Copyright (C) 2012-2015 Carl Hetherington + Copyright (C) 2012-2018 Carl Hetherington - 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 . */ #include "audio_analysis.h" #include "cross.h" #include "util.h" -#include "raw_convert.h" +#include "playlist.h" +#include "audio_content.h" +#include "warnings.h" +#include +DCPOMATIC_DISABLE_WARNINGS #include +DCPOMATIC_ENABLE_WARNINGS #include #include #include @@ -36,49 +42,16 @@ using std::string; using std::vector; using std::cout; using std::max; +using std::pair; +using std::make_pair; 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 ("Peak"); - _data[RMS] = node->number_child ("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; -} +using std::shared_ptr; +using boost::optional; +using std::dynamic_pointer_cast; +using dcp::raw_convert; +using namespace dcpomatic; -void -AudioPoint::as_xml (xmlpp::Element* parent) const -{ - parent->add_child ("Peak")->add_child_text (raw_convert (_data[PEAK])); - parent->add_child ("RMS")->add_child_text (raw_convert (_data[RMS])); -} +int const AudioAnalysis::_current_state_version = 3; AudioAnalysis::AudioAnalysis (int channels) { @@ -90,6 +63,11 @@ AudioAnalysis::AudioAnalysis (boost::filesystem::path filename) cxml::Document f ("AudioAnalysis"); f.read_file (filename); + if (f.optional_number_child("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 channel; @@ -100,8 +78,26 @@ AudioAnalysis::AudioAnalysis (boost::filesystem::path filename) _data.push_back (channel); } - _peak = f.number_child ("Peak"); - _peak_time = DCPTime (f.number_child ("PeakTime")); + BOOST_FOREACH (cxml::ConstNodePtr i, f.node_children ("SamplePeak")) { + _sample_peak.push_back ( + PeakTime ( + dcp::raw_convert(i->content()), DCPTime(i->number_attribute("Time")) + ) + ); + } + + BOOST_FOREACH (cxml::ConstNodePtr i, f.node_children ("TruePeak")) { + _true_peak.push_back (dcp::raw_convert (i->content ())); + } + + _integrated_loudness = f.optional_number_child ("IntegratedLoudness"); + _loudness_range = f.optional_number_child ("LoudnessRange"); + + _analysis_gain = f.optional_number_child ("AnalysisGain"); + _samples_per_point = f.number_child ("SamplesPerPoint"); + _sample_rate = f.number_child ("SampleRate"); + + _leqm = f.optional_number_child("Leqm"); } void @@ -137,6 +133,8 @@ AudioAnalysis::write (boost::filesystem::path filename) shared_ptr doc (new xmlpp::Document); xmlpp::Element* root = doc->create_root_node ("AudioAnalysis"); + root->add_child("Version")->add_child_text (raw_convert (_current_state_version)); + BOOST_FOREACH (vector& i, _data) { xmlpp::Element* channel = root->add_child ("Channel"); BOOST_FOREACH (AudioPoint& j, i) { @@ -144,10 +142,83 @@ AudioAnalysis::write (boost::filesystem::path filename) } } - if (_peak) { - root->add_child("Peak")->add_child_text (raw_convert (_peak.get ())); - root->add_child("PeakTime")->add_child_text (raw_convert (_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 (_sample_peak[i].peak)); + n->set_attribute ("Time", raw_convert (_sample_peak[i].time.get())); + } + + BOOST_FOREACH (float i, _true_peak) { + root->add_child("TruePeak")->add_child_text (raw_convert (i)); + } + + if (_integrated_loudness) { + root->add_child("IntegratedLoudness")->add_child_text (raw_convert (_integrated_loudness.get ())); + } + + if (_loudness_range) { + root->add_child("LoudnessRange")->add_child_text (raw_convert (_loudness_range.get ())); + } + + if (_analysis_gain) { + root->add_child("AnalysisGain")->add_child_text (raw_convert (_analysis_gain.get ())); + } + + root->add_child("SamplesPerPoint")->add_child_text (raw_convert (_samples_per_point)); + root->add_child("SampleRate")->add_child_text (raw_convert (_sample_rate)); + + if (_leqm) { + root->add_child("Leqm")->add_child_text(raw_convert(*_leqm)); } doc->write_to_file_formatted (filename.string ()); } + +float +AudioAnalysis::gain_correction (shared_ptr 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::overall_sample_peak () const +{ + DCPOMATIC_ASSERT (!_sample_peak.empty ()); + + optional 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 +AudioAnalysis::overall_true_peak () const +{ + optional p; + + BOOST_FOREACH (float i, _true_peak) { + if (!p || i > *p) { + p = i; + } + } + + return p; +} +