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.
21 #include <boost/shared_ptr.hpp>
22 #include "video_content.h"
23 #include "audio_content.h"
25 class NullContent : public VideoContent, public AudioContent
28 NullContent (boost::shared_ptr<const Film>, Time, Time);
30 std::string summary () const {
34 std::string information () const {
38 void as_xml (xmlpp::Node *) const {}
40 boost::shared_ptr<Content> clone () const {
41 return boost::shared_ptr<Content> ();
44 int audio_channels () const;
46 ContentAudioFrame audio_length () const {
50 int content_audio_frame_rate () const;
52 int output_audio_frame_rate () const;
54 AudioMapping audio_mapping () const {
55 return AudioMapping ();
58 void set_audio_mapping (AudioMapping) {}
60 Time length () const {
65 ContentAudioFrame _audio_length;