/*
- Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2013-2015 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 <boost/lexical_cast.hpp>
-#include <libxml++/libxml++.h>
-#include <libcxml/cxml.h>
#include "audio_mapping.h"
#include "util.h"
+#include "md5_digester.h"
+#include "raw_convert.h"
+#include <libcxml/cxml.h>
+#include <libxml++/libxml++.h>
using std::list;
using std::cout;
using std::make_pair;
using std::pair;
using std::string;
+using std::min;
+using std::vector;
using boost::shared_ptr;
-using boost::lexical_cast;
using boost::dynamic_pointer_cast;
AudioMapping::AudioMapping ()
}
-/** Create a default AudioMapping for a given channel count.
- * @param c Number of channels.
+/** Create an empty AudioMapping for a given channel count.
+ * @param channels Number of channels.
*/
-AudioMapping::AudioMapping (int c)
+AudioMapping::AudioMapping (int channels)
{
- setup (c);
+ setup (channels);
}
void
_gain.resize (_content_channels);
for (int i = 0; i < _content_channels; ++i) {
- _gain[i].resize (MAX_AUDIO_CHANNELS);
+ _gain[i].resize (MAX_DCP_AUDIO_CHANNELS);
}
}
AudioMapping::make_default ()
{
for (int i = 0; i < _content_channels; ++i) {
- for (int j = 0; j < MAX_AUDIO_CHANNELS; ++j) {
+ for (int j = 0; j < MAX_DCP_AUDIO_CHANNELS; ++j) {
_gain[i][j] = 0;
}
}
if (_content_channels == 1) {
/* Mono -> Centre */
- set (0, libdcp::CENTRE, 1);
+ set (0, dcp::CENTRE, 1);
} else {
/* 1:1 mapping */
- for (int i = 0; i < _content_channels; ++i) {
- set (i, static_cast<libdcp::Channel> (i), 1);
+ for (int i = 0; i < min (_content_channels, MAX_DCP_AUDIO_CHANNELS); ++i) {
+ set (i, static_cast<dcp::Channel> (i), 1);
}
}
}
-AudioMapping::AudioMapping (shared_ptr<const cxml::Node> node, int state_version)
+AudioMapping::AudioMapping (cxml::ConstNodePtr node, int state_version)
{
setup (node->number_child<int> ("ContentChannels"));
/* Old-style: on/off mapping */
list<cxml::NodePtr> const c = node->node_children ("Map");
for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
- set ((*i)->number_child<int> ("ContentIndex"), static_cast<libdcp::Channel> ((*i)->number_child<int> ("DCP")), 1);
+ set ((*i)->number_child<int> ("ContentIndex"), static_cast<dcp::Channel> ((*i)->number_child<int> ("DCP")), 1);
}
} else {
list<cxml::NodePtr> const c = node->node_children ("Gain");
for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
set (
(*i)->number_attribute<int> ("Content"),
- static_cast<libdcp::Channel> ((*i)->number_attribute<int> ("DCP")),
- lexical_cast<float> ((*i)->content ())
+ static_cast<dcp::Channel> ((*i)->number_attribute<int> ("DCP")),
+ raw_convert<float> ((*i)->content ())
);
}
}
}
void
-AudioMapping::set (int c, libdcp::Channel d, float g)
+AudioMapping::set (int c, dcp::Channel d, float g)
{
_gain[c][d] = g;
}
float
-AudioMapping::get (int c, libdcp::Channel d) const
+AudioMapping::get (int c, dcp::Channel d) const
{
return _gain[c][d];
}
void
AudioMapping::as_xml (xmlpp::Node* node) const
{
- node->add_child ("ContentChannels")->add_child_text (lexical_cast<string> (_content_channels));
+ node->add_child ("ContentChannels")->add_child_text (raw_convert<string> (_content_channels));
for (int c = 0; c < _content_channels; ++c) {
- for (int d = 0; d < MAX_AUDIO_CHANNELS; ++d) {
+ for (int d = 0; d < MAX_DCP_AUDIO_CHANNELS; ++d) {
xmlpp::Element* t = node->add_child ("Gain");
- t->set_attribute ("Content", lexical_cast<string> (c));
- t->set_attribute ("DCP", lexical_cast<string> (d));
- t->add_child_text (lexical_cast<string> (get (c, static_cast<libdcp::Channel> (d))));
+ t->set_attribute ("Content", raw_convert<string> (c));
+ t->set_attribute ("DCP", raw_convert<string> (d));
+ t->add_child_text (raw_convert<string> (get (c, static_cast<dcp::Channel> (d))));
+ }
+ }
+}
+
+/** @return a string which is unique for a given AudioMapping configuration, for
+ * differentiation between different AudioMappings.
+ */
+string
+AudioMapping::digest () const
+{
+ MD5Digester digester;
+ digester.add (_content_channels);
+ for (int i = 0; i < _content_channels; ++i) {
+ for (int j = 0; j < MAX_DCP_AUDIO_CHANNELS; ++j) {
+ digester.add (_gain[i][j]);
+ }
+ }
+
+ return digester.get ();
+}
+
+list<dcp::Channel>
+AudioMapping::mapped_dcp_channels () const
+{
+ static float const minus_96_db = 0.000015849;
+
+ list<dcp::Channel> mapped;
+
+ for (vector<vector<float> >::const_iterator i = _gain.begin(); i != _gain.end(); ++i) {
+ for (size_t j = 0; j < i->size(); ++j) {
+ if (abs ((*i)[j]) > minus_96_db) {
+ mapped.push_back ((dcp::Channel) j);
+ }
+ }
+ }
+
+ mapped.sort ();
+ mapped.unique ();
+
+ return mapped;
+}
+
+void
+AudioMapping::unmap_all ()
+{
+ for (vector<vector<float> >::iterator i = _gain.begin(); i != _gain.end(); ++i) {
+ for (vector<float>::iterator j = i->begin(); j != i->end(); ++j) {
+ *j = 0;
}
}
}
+