diff options
Diffstat (limited to 'src/lib/sndfile_content.cc')
| -rw-r--r-- | src/lib/sndfile_content.cc | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/lib/sndfile_content.cc b/src/lib/sndfile_content.cc new file mode 100644 index 000000000..d57cf04e3 --- /dev/null +++ b/src/lib/sndfile_content.cc @@ -0,0 +1,170 @@ +/* + Copyright (C) 2013 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 + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#include <libcxml/cxml.h> +#include "sndfile_content.h" +#include "sndfile_decoder.h" +#include "film.h" +#include "compose.hpp" +#include "job.h" + +#include "i18n.h" + +using std::string; +using std::stringstream; +using std::cout; +using boost::shared_ptr; +using boost::lexical_cast; + +SndfileContent::SndfileContent (shared_ptr<const Film> f, boost::filesystem::path p) + : Content (f, p) + , AudioContent (f, p) + , _audio_channels (0) + , _audio_length (0) + , _audio_frame_rate (0) +{ + +} + +SndfileContent::SndfileContent (shared_ptr<const Film> f, shared_ptr<const cxml::Node> node) + : Content (f, node) + , AudioContent (f, node) + , _audio_mapping (node->node_child ("AudioMapping")) +{ + _audio_channels = node->number_child<int> ("AudioChannels"); + _audio_length = node->number_child<AudioContent::Frame> ("AudioLength"); + _audio_frame_rate = node->number_child<int> ("AudioFrameRate"); +} + +string +SndfileContent::summary () const +{ + /* Get the string() here so that the name does not have quotes around it */ + return String::compose (_("%1 [audio]"), path().filename().string()); +} + +string +SndfileContent::technical_summary () const +{ + return Content::technical_summary() + " - " + + AudioContent::technical_summary () + + " - sndfile"; +} + +string +SndfileContent::information () const +{ + if (_audio_frame_rate == 0) { + return ""; + } + + stringstream s; + + s << String::compose ( + _("%1 channels, %2kHz, %3 samples"), + audio_channels(), + content_audio_frame_rate() / 1000.0, + audio_length() + ); + + return s.str (); +} + +bool +SndfileContent::valid_file (boost::filesystem::path f) +{ + /* XXX: more extensions */ + string ext = f.extension().string(); + transform (ext.begin(), ext.end(), ext.begin(), ::tolower); + return (ext == ".wav" || ext == ".aif" || ext == ".aiff"); +} + +void +SndfileContent::examine (shared_ptr<Job> job) +{ + job->set_progress_unknown (); + Content::examine (job); + + shared_ptr<const Film> film = _film.lock (); + assert (film); + + SndfileDecoder dec (film, shared_from_this()); + + { + boost::mutex::scoped_lock lm (_mutex); + _audio_channels = dec.audio_channels (); + _audio_length = dec.audio_length (); + _audio_frame_rate = dec.audio_frame_rate (); + } + + signal_changed (AudioContentProperty::AUDIO_CHANNELS); + signal_changed (AudioContentProperty::AUDIO_LENGTH); + signal_changed (AudioContentProperty::AUDIO_FRAME_RATE); + + { + boost::mutex::scoped_lock lm (_mutex); + /* XXX: do this in signal_changed...? */ + _audio_mapping = AudioMapping (_audio_channels); + _audio_mapping.make_default (); + } + + signal_changed (AudioContentProperty::AUDIO_MAPPING); +} + +void +SndfileContent::as_xml (xmlpp::Node* node) const +{ + node->add_child("Type")->add_child_text ("Sndfile"); + Content::as_xml (node); + AudioContent::as_xml (node); + + node->add_child("AudioChannels")->add_child_text (lexical_cast<string> (audio_channels ())); + node->add_child("AudioLength")->add_child_text (lexical_cast<string> (audio_length ())); + node->add_child("AudioFrameRate")->add_child_text (lexical_cast<string> (content_audio_frame_rate ())); + _audio_mapping.as_xml (node->add_child("AudioMapping")); +} + +Time +SndfileContent::full_length () const +{ + shared_ptr<const Film> film = _film.lock (); + assert (film); + + return film->audio_frames_to_time (audio_length ()); +} + +int +SndfileContent::output_audio_frame_rate () const +{ + shared_ptr<const Film> film = _film.lock (); + assert (film); + + return film->audio_frame_rate (); +} + +void +SndfileContent::set_audio_mapping (AudioMapping m) +{ + { + boost::mutex::scoped_lock lm (_mutex); + _audio_mapping = m; + } + + signal_changed (AudioContentProperty::AUDIO_MAPPING); +} |