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/*
Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file src/dcp_video_frame.cc
* @brief A single frame of video destined for a DCP.
*
* Given an Image and some settings, this class knows how to encode
* the image to J2K either on the local host or on a remote server.
*
* Objects of this class are used for the queue that we keep
* of images that require encoding.
*/
#include "dcp_video.h"
#include "config.h"
#include "exceptions.h"
#include "encode_server_description.h"
#include "image.h"
#include "log.h"
#include "dcpomatic_log.h"
#include "cross.h"
#include "player_video.h"
#include "compose.hpp"
#include "warnings.h"
#include <libcxml/cxml.h>
#include <dcp/raw_convert.h>
#include <dcp/openjpeg_image.h>
#include <dcp/rgb_xyz.h>
#include <dcp/j2k.h>
DCPOMATIC_DISABLE_WARNINGS
#include <libxml++/libxml++.h>
DCPOMATIC_ENABLE_WARNINGS
#include <boost/thread.hpp>
#include <stdint.h>
#include <iomanip>
#include <iostream>
#include "i18n.h"
using std::string;
using std::cout;
using boost::shared_ptr;
using dcp::Size;
using dcp::Data;
using dcp::raw_convert;
#if BOOST_VERSION >= 106100
using namespace boost::placeholders;
#endif
using namespace dcpomatic;
#define DCI_COEFFICENT (48.0 / 52.37)
/** Construct a DCP video frame.
* @param frame Input frame.
* @param index Index of the frame within the DCP.
* @param bw J2K bandwidth to use (see Config::j2k_bandwidth ())
*/
DCPVideo::DCPVideo (
shared_ptr<const PlayerVideo> frame, int index, int dcp_fps, int bw, Resolution r
)
: _frame (frame)
, _index (index)
, _frames_per_second (dcp_fps)
, _j2k_bandwidth (bw)
, _resolution (r)
{
}
DCPVideo::DCPVideo (shared_ptr<const PlayerVideo> frame, shared_ptr<const cxml::Node> node)
: _frame (frame)
{
_index = node->number_child<int> ("Index");
_frames_per_second = node->number_child<int> ("FramesPerSecond");
_j2k_bandwidth = node->number_child<int> ("J2KBandwidth");
_resolution = Resolution (node->optional_number_child<int>("Resolution").get_value_or (RESOLUTION_2K));
}
shared_ptr<dcp::OpenJPEGImage>
DCPVideo::convert_to_xyz (shared_ptr<const PlayerVideo> frame, dcp::NoteHandler note)
{
shared_ptr<dcp::OpenJPEGImage> xyz;
shared_ptr<Image> image = frame->image (bind (&PlayerVideo::keep_xyz_or_rgb, _1), true, false);
if (frame->colour_conversion()) {
xyz = dcp::rgb_to_xyz (
image->data()[0],
image->size(),
image->stride()[0],
frame->colour_conversion().get(),
note
);
} else {
xyz.reset (new dcp::OpenJPEGImage (image->data()[0], image->size(), image->stride()[0]));
}
return xyz;
}
void
DCPVideo::add_metadata (xmlpp::Element* el) const
{
el->add_child("Index")->add_child_text (raw_convert<string> (_index));
el->add_child("FramesPerSecond")->add_child_text (raw_convert<string> (_frames_per_second));
el->add_child("J2KBandwidth")->add_child_text (raw_convert<string> (_j2k_bandwidth));
el->add_child("Resolution")->add_child_text (raw_convert<string> (int (_resolution)));
_frame->add_metadata (el);
}
/** @return true if this DCPVideo is definitely the same as another;
* (apart from the frame index), false if it is probably not.
*/
bool
DCPVideo::same (shared_ptr<const DCPVideo> other) const
{
if (_frames_per_second != other->_frames_per_second ||
_j2k_bandwidth != other->_j2k_bandwidth ||
_resolution != other->_resolution) {
return false;
}
return _frame->same (other->_frame);
}
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