1 /* -*- c-basic-offset: 8; default-tab-width: 8; -*- */
4 Copyright (C) 2013 Carl Hetherington <cth@carlh.net>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include <libcxml/cxml.h>
23 #include "sndfile_content.h"
24 #include "sndfile_decoder.h"
25 #include "compose.hpp"
31 using std::stringstream;
33 using boost::shared_ptr;
34 using boost::lexical_cast;
36 SndfileContent::SndfileContent (boost::filesystem::path f)
41 , _audio_frame_rate (0)
46 SndfileContent::SndfileContent (shared_ptr<const cxml::Node> node)
50 _audio_channels = node->number_child<int> ("AudioChannels");
51 _audio_length = node->number_child<ContentAudioFrame> ("AudioLength");
52 _audio_frame_rate = node->number_child<int> ("AudioFrameRate");
53 _mapping = AudioMapping (node->node_child ("Mapping"));
57 SndfileContent::summary () const
59 return String::compose (_("Sound file: %1"), file().filename().string());
63 SndfileContent::information () const
65 if (_audio_frame_rate == 0) {
71 s << String::compose (
72 _("%1 channels, %2kHz, %3 samples"),
74 content_audio_frame_rate() / 1000.0,
82 SndfileContent::valid_file (boost::filesystem::path f)
84 /* XXX: more extensions */
85 string ext = f.extension().string();
86 transform (ext.begin(), ext.end(), ext.begin(), ::tolower);
87 return (ext == ".wav" || ext == ".aif" || ext == ".aiff");
91 SndfileContent::clone () const
93 return shared_ptr<Content> (new SndfileContent (*this));
97 SndfileContent::examine (shared_ptr<Film> film, shared_ptr<Job> job, bool quick)
99 job->set_progress_unknown ();
100 Content::examine (film, job, quick);
102 SndfileDecoder dec (film, shared_from_this());
105 boost::mutex::scoped_lock lm (_mutex);
106 _audio_channels = dec.audio_channels ();
107 _audio_length = dec.audio_length ();
108 _audio_frame_rate = dec.audio_frame_rate ();
109 _mapping = AudioMapping (_audio_channels);
112 signal_changed (AudioContentProperty::AUDIO_CHANNELS);
113 signal_changed (AudioContentProperty::AUDIO_LENGTH);
114 signal_changed (AudioContentProperty::AUDIO_FRAME_RATE);
118 SndfileContent::as_xml (xmlpp::Node* node) const
120 node->add_child("Type")->add_child_text ("Sndfile");
121 Content::as_xml (node);
122 node->add_child("AudioChannels")->add_child_text (lexical_cast<string> (_audio_channels));
123 node->add_child("AudioLength")->add_child_text (lexical_cast<string> (_audio_length));
124 node->add_child("AudioFrameRate")->add_child_text (lexical_cast<string> (_audio_frame_rate));
125 _mapping.as_xml (node->add_child("Mapping"));
129 SndfileContent::output_audio_frame_rate (shared_ptr<const Film>) const
131 /* Resample to a DCI-approved sample rate */
132 return dcp_audio_frame_rate (content_audio_frame_rate ());
136 SndfileContent::length (shared_ptr<const Film> film) const
138 return film->audio_frames_to_time (audio_length ());