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/*
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 "video_content.h"
#include "video_decoder.h"
#include "i18n.h"
int const VideoContentProperty::VIDEO_LENGTH = 0;
int const VideoContentProperty::VIDEO_SIZE = 1;
int const VideoContentProperty::VIDEO_FRAME_RATE = 2;
using std::string;
using std::stringstream;
using std::setprecision;
using boost::shared_ptr;
using boost::lexical_cast;
VideoContent::VideoContent (boost::filesystem::path f)
: Content (f)
, _video_length (0)
{
}
VideoContent::VideoContent (shared_ptr<const cxml::Node> node)
: Content (node)
{
_video_length = node->number_child<ContentVideoFrame> ("VideoLength");
_video_size.width = node->number_child<int> ("VideoWidth");
_video_size.height = node->number_child<int> ("VideoHeight");
_video_frame_rate = node->number_child<float> ("VideoFrameRate");
}
VideoContent::VideoContent (VideoContent const & o)
: Content (o)
, _video_length (o._video_length)
, _video_size (o._video_size)
, _video_frame_rate (o._video_frame_rate)
{
}
void
VideoContent::as_xml (xmlpp::Node* node) const
{
boost::mutex::scoped_lock lm (_mutex);
node->add_child("VideoLength")->add_child_text (lexical_cast<string> (_video_length));
node->add_child("VideoWidth")->add_child_text (lexical_cast<string> (_video_size.width));
node->add_child("VideoHeight")->add_child_text (lexical_cast<string> (_video_size.height));
node->add_child("VideoFrameRate")->add_child_text (lexical_cast<string> (_video_frame_rate));
}
void
VideoContent::take_from_video_decoder (shared_ptr<VideoDecoder> d)
{
/* These decoder calls could call other content methods which take a lock on the mutex */
libdcp::Size const vs = d->native_size ();
float const vfr = d->video_frame_rate ();
{
boost::mutex::scoped_lock lm (_mutex);
_video_size = vs;
_video_frame_rate = vfr;
}
signal_changed (VideoContentProperty::VIDEO_SIZE);
signal_changed (VideoContentProperty::VIDEO_FRAME_RATE);
}
string
VideoContent::information () const
{
if (video_size().width == 0 || video_size().height == 0) {
return "";
}
stringstream s;
s << String::compose (
_("%1x%2 pixels (%3:1)"),
video_size().width,
video_size().height,
setprecision (3), float (video_size().width) / video_size().height
);
return s.str ();
}
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