2 Copyright (C) 2013-2014 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 <libcxml/cxml.h>
21 #include <libdcp/raw_convert.h>
22 #include "sndfile_content.h"
23 #include "sndfile_decoder.h"
25 #include "compose.hpp"
32 using std::stringstream;
34 using boost::shared_ptr;
35 using libdcp::raw_convert;
37 SndfileContent::SndfileContent (shared_ptr<const Film> f, boost::filesystem::path p)
42 , _audio_frame_rate (0)
47 SndfileContent::SndfileContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node, int version)
49 , AudioContent (f, node)
50 , _audio_mapping (node->node_child ("AudioMapping"), version)
52 _audio_channels = node->number_child<int> ("AudioChannels");
53 _audio_length = node->number_child<AudioContent::Frame> ("AudioLength");
54 _audio_frame_rate = node->number_child<int> ("AudioFrameRate");
58 SndfileContent::summary () const
60 /* Get the string() here so that the name does not have quotes around it */
61 return String::compose (_("%1 [audio]"), path_summary ());
65 SndfileContent::technical_summary () const
67 return Content::technical_summary() + " - "
68 + AudioContent::technical_summary ()
73 SndfileContent::information () const
75 if (_audio_frame_rate == 0) {
81 s << String::compose (
82 _("%1 channels, %2kHz, %3 samples"),
84 content_audio_frame_rate() / 1000.0,
92 SndfileContent::valid_file (boost::filesystem::path f)
94 /* XXX: more extensions */
95 string ext = f.extension().string();
96 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
97 return (ext == ".wav" || ext == ".aif" || ext == ".aiff");
101 SndfileContent::examine (shared_ptr<Job> job)
103 job->set_progress_unknown ();
104 Content::examine (job);
106 shared_ptr<const Film> film = _film.lock ();
109 SndfileDecoder dec (film, shared_from_this());
112 boost::mutex::scoped_lock lm (_mutex);
113 _audio_channels = dec.audio_channels ();
114 _audio_length = dec.audio_length ();
115 _audio_frame_rate = dec.audio_frame_rate ();
118 signal_changed (AudioContentProperty::AUDIO_CHANNELS);
119 signal_changed (AudioContentProperty::AUDIO_LENGTH);
120 signal_changed (AudioContentProperty::AUDIO_FRAME_RATE);
123 boost::mutex::scoped_lock lm (_mutex);
124 /* XXX: do this in signal_changed...? */
125 _audio_mapping = AudioMapping (_audio_channels);
126 _audio_mapping.make_default ();
129 signal_changed (AudioContentProperty::AUDIO_MAPPING);
133 SndfileContent::as_xml (xmlpp::Node* node) const
135 node->add_child("Type")->add_child_text ("Sndfile");
136 Content::as_xml (node);
137 AudioContent::as_xml (node);
139 node->add_child("AudioChannels")->add_child_text (raw_convert<string> (audio_channels ()));
140 node->add_child("AudioLength")->add_child_text (raw_convert<string> (audio_length ()));
141 node->add_child("AudioFrameRate")->add_child_text (raw_convert<string> (content_audio_frame_rate ()));
142 _audio_mapping.as_xml (node->add_child("AudioMapping"));
146 SndfileContent::full_length () const
148 shared_ptr<const Film> film = _film.lock ();
151 FrameRateChange frc = film->active_frame_rate_change (position ());
153 OutputAudioFrame const len = divide_with_round (
154 audio_length() * output_audio_frame_rate() * frc.source,
155 content_audio_frame_rate() * film->video_frame_rate()
158 return film->audio_frames_to_time (len);
162 SndfileContent::set_audio_mapping (AudioMapping m)
165 boost::mutex::scoped_lock lm (_mutex);
169 signal_changed (AudioContentProperty::AUDIO_MAPPING);