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/*
Copyright (C) 2014-2015 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 "font.h"
#include "dcp_subtitle_content.h"
#include "raw_convert.h"
#include "film.h"
#include <dcp/interop_subtitle_asset.h>
#include <dcp/smpte_subtitle_asset.h>
#include <dcp/interop_load_font_node.h>
#include <libxml++/libxml++.h>
#include <boost/foreach.hpp>
#include "i18n.h"
using std::string;
using std::list;
using boost::shared_ptr;
using boost::dynamic_pointer_cast;
DCPSubtitleContent::DCPSubtitleContent (shared_ptr<const Film> film, boost::filesystem::path path)
: Content (film, path)
, SubtitleContent (film, path)
{
}
DCPSubtitleContent::DCPSubtitleContent (shared_ptr<const Film> film, cxml::ConstNodePtr node, int version)
: Content (film, node)
, SubtitleContent (film, node, version)
, _length (node->number_child<ContentTime::Type> ("Length"))
, _frame_rate (node->optional_number_child<int>("SubtitleFrameRate"))
{
}
void
DCPSubtitleContent::examine (shared_ptr<Job> job)
{
Content::examine (job);
shared_ptr<dcp::SubtitleAsset> sc = load (path (0));
/* Default to turning these subtitles on */
set_use_subtitles (true);
boost::mutex::scoped_lock lm (_mutex);
shared_ptr<dcp::InteropSubtitleAsset> iop = dynamic_pointer_cast<dcp::InteropSubtitleAsset> (sc);
if (iop) {
_subtitle_language = iop->language ();
}
shared_ptr<dcp::SMPTESubtitleAsset> smpte = dynamic_pointer_cast<dcp::SMPTESubtitleAsset> (sc);
if (smpte) {
_subtitle_language = smpte->language().get_value_or ("");
_frame_rate = smpte->edit_rate().numerator;
}
_length = ContentTime::from_seconds (sc->latest_subtitle_out().as_seconds ());
BOOST_FOREACH (shared_ptr<dcp::LoadFontNode> i, sc->load_font_nodes ()) {
add_font (shared_ptr<Font> (new Font (i->id)));
}
}
DCPTime
DCPSubtitleContent::full_length () const
{
FrameRateChange const frc (subtitle_video_frame_rate(), film()->video_frame_rate());
return DCPTime (_length, frc);
}
string
DCPSubtitleContent::summary () const
{
return path_summary() + " " + _("[subtitles]");
}
string
DCPSubtitleContent::technical_summary () const
{
return Content::technical_summary() + " - " + _("DCP XML subtitles");
}
void
DCPSubtitleContent::as_xml (xmlpp::Node* node) const
{
node->add_child("Type")->add_child_text ("DCPSubtitle");
Content::as_xml (node);
SubtitleContent::as_xml (node);
node->add_child("Length")->add_child_text (raw_convert<string> (_length.get ()));
}
void
DCPSubtitleContent::set_subtitle_video_frame_rate (int r)
{
{
boost::mutex::scoped_lock lm (_mutex);
_frame_rate = r;
}
signal_changed (SubtitleContentProperty::SUBTITLE_VIDEO_FRAME_RATE);
}
double
DCPSubtitleContent::subtitle_video_frame_rate () const
{
{
boost::mutex::scoped_lock lm (_mutex);
if (_frame_rate) {
return _frame_rate.get ();
}
}
/* No frame rate specified, so assume this content has been
prepared for any concurrent video content.
*/
return film()->active_frame_rate_change(position()).source;
}
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