2 Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <boost/lexical_cast.hpp>
21 #include <libxml++/libxml++.h>
22 #include <libcxml/cxml.h>
23 #include "audio_mapping.h"
31 using boost::shared_ptr;
32 using boost::lexical_cast;
33 using boost::dynamic_pointer_cast;
35 AudioMapping::AudioMapping ()
36 : _content_channels (0)
41 /** Create a default AudioMapping for a given channel count.
42 * @param c Number of channels.
44 AudioMapping::AudioMapping (int c)
50 AudioMapping::setup (int c)
52 _content_channels = c;
54 _gain.resize (_content_channels);
55 for (int i = 0; i < _content_channels; ++i) {
56 _gain[i].resize (MAX_AUDIO_CHANNELS);
61 AudioMapping::make_default ()
63 for (int i = 0; i < _content_channels; ++i) {
64 for (int j = 0; j < MAX_AUDIO_CHANNELS; ++j) {
69 if (_content_channels == 1) {
71 set (0, dcp::CENTRE, 1);
74 for (int i = 0; i < _content_channels; ++i) {
75 set (i, static_cast<dcp::Channel> (i), 1);
80 AudioMapping::AudioMapping (shared_ptr<const cxml::Node> node, int state_version)
82 setup (node->number_child<int> ("ContentChannels"));
84 if (state_version <= 5) {
85 /* Old-style: on/off mapping */
86 list<cxml::NodePtr> const c = node->node_children ("Map");
87 for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
88 set ((*i)->number_child<int> ("ContentIndex"), static_cast<dcp::Channel> ((*i)->number_child<int> ("DCP")), 1);
91 list<cxml::NodePtr> const c = node->node_children ("Gain");
92 for (list<cxml::NodePtr>::const_iterator i = c.begin(); i != c.end(); ++i) {
94 (*i)->number_attribute<int> ("Content"),
95 static_cast<dcp::Channel> ((*i)->number_attribute<int> ("DCP")),
96 lexical_cast<float> ((*i)->content ())
103 AudioMapping::set (int c, dcp::Channel d, float g)
109 AudioMapping::get (int c, dcp::Channel d) const
115 AudioMapping::as_xml (xmlpp::Node* node) const
117 node->add_child ("ContentChannels")->add_child_text (lexical_cast<string> (_content_channels));
119 for (int c = 0; c < _content_channels; ++c) {
120 for (int d = 0; d < MAX_AUDIO_CHANNELS; ++d) {
121 xmlpp::Element* t = node->add_child ("Gain");
122 t->set_attribute ("Content", lexical_cast<string> (c));
123 t->set_attribute ("DCP", lexical_cast<string> (d));
124 t->add_child_text (lexical_cast<string> (get (c, static_cast<dcp::Channel> (d))));