/*
- 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
it under the terms of the GNU General Public License as published by
*/
+#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 <cassert>
#include <cstdio>
-#include <boost/filesystem.hpp>
-#include "audio_analysis.h"
-#include "cross.h"
+#include <iostream>
+#include <inttypes.h>
using std::ostream;
using std::istream;
using std::cout;
using std::max;
using std::list;
-
-AudioPoint::AudioPoint ()
-{
- for (int i = 0; i < COUNT; ++i) {
- _data[i] = 0;
- }
-}
-
-AudioPoint::AudioPoint (FILE* f)
-{
- for (int i = 0; i < COUNT; ++i) {
- fscanf (f, "%f", &_data[i]);
- }
-}
-
-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::write (FILE* f) const
-{
- for (int i = 0; i < COUNT; ++i) {
- fprintf (f, "%f\n", _data[i]);
- }
-}
-
+using boost::shared_ptr;
+using boost::dynamic_pointer_cast;
AudioAnalysis::AudioAnalysis (int channels)
{
AudioAnalysis::AudioAnalysis (boost::filesystem::path filename)
{
- FILE* f = fopen_boost (filename, "r");
+ cxml::Document f ("AudioAnalysis");
+ f.read_file (filename);
- int channels;
- fscanf (f, "%d", &channels);
- _data.resize (channels);
+ BOOST_FOREACH (cxml::NodePtr i, f.node_children ("Channel")) {
+ vector<AudioPoint> channel;
- for (int i = 0; i < channels; ++i) {
- int points;
- fscanf (f, "%d", &points);
- if (feof (f)) {
- fclose (f);
- return;
- }
-
- for (int j = 0; j < points; ++j) {
- _data[i].push_back (AudioPoint (f));
- if (feof (f)) {
- fclose (f);
- return;
- }
+ BOOST_FOREACH (cxml::NodePtr j, i->node_children ("Point")) {
+ channel.push_back (AudioPoint (j));
}
+
+ _data.push_back (channel);
}
- fclose (f);
+ _peak = f.number_child<float> ("Peak");
+ _peak_time = DCPTime (f.number_child<DCPTime::Type> ("PeakTime"));
+ _analysis_gain = f.optional_number_child<double> ("AnalysisGain");
}
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::points (int c) const
{
- assert (c < channels ());
+ DCPOMATIC_ASSERT (c < channels ());
return _data[c].size ();
}
void
AudioAnalysis::write (boost::filesystem::path filename)
{
- boost::filesystem::path tmp = filename;
- tmp.replace_extension (".tmp");
+ shared_ptr<xmlpp::Document> doc (new xmlpp::Document);
+ xmlpp::Element* root = doc->create_root_node ("AudioAnalysis");
- FILE* f = fopen_boost (tmp, "w");
-
- fprintf (f, "%ld\n", _data.size ());
- for (vector<vector<AudioPoint> >::iterator i = _data.begin(); i != _data.end(); ++i) {
- fprintf (f, "%ld\n", i->size ());
- for (vector<AudioPoint>::iterator j = i->begin(); j != i->end(); ++j) {
- j->write (f);
+ 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"));
}
}
- fclose (f);
- boost::filesystem::rename (tmp, 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 (_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'.
+ */
+ shared_ptr<const AudioContent> ac = dynamic_pointer_cast<const AudioContent> (playlist->content().front ());
+ DCPOMATIC_ASSERT (ac);
+ return ac->audio_gain() - analysis_gain().get ();
+ }
+
+ return 0.0f;
}
projects / dcpomatic.git / blobdiff