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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 "dcpomatic_socket.h"
#include "image.h"
#include "log.h"
#include "dcpomatic_log.h"
#include "cross.h"
#include "player_video.h"
#include "compose.hpp"
#include <libcxml/cxml.h>
#include <dcp/raw_convert.h>
#include <dcp/openjpeg_image.h>
#include <dcp/rgb_xyz.h>
#include <dcp/j2k.h>
#include <libxml++/libxml++.h>
#include <boost/asio.hpp>
#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
#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;
}
/** J2K-encode this frame on the local host.
* @return Encoded data.
*/
Data
DCPVideo::encode_locally ()
{
Data enc = dcp::compress_j2k (
convert_to_xyz (_frame, boost::bind(&Log::dcp_log, dcpomatic_log.get(), _1, _2)),
_j2k_bandwidth,
_frames_per_second,
_frame->eyes() == EYES_LEFT || _frame->eyes() == EYES_RIGHT,
_resolution == RESOLUTION_4K
);
switch (_frame->eyes()) {
case EYES_BOTH:
LOG_DEBUG_ENCODE (N_("Finished locally-encoded frame %1 for mono"), _index);
break;
case EYES_LEFT:
LOG_DEBUG_ENCODE (N_("Finished locally-encoded frame %1 for L"), _index);
break;
case EYES_RIGHT:
LOG_DEBUG_ENCODE (N_("Finished locally-encoded frame %1 for R"), _index);
break;
default:
break;
}
return enc;
}
/** Send this frame to a remote server for J2K encoding, then read the result.
* @param serv Server to send to.
* @param timeout timeout in seconds.
* @return Encoded data.
*/
Data
DCPVideo::encode_remotely (EncodeServerDescription serv, int timeout)
{
boost::asio::io_service io_service;
boost::asio::ip::tcp::resolver resolver (io_service);
boost::asio::ip::tcp::resolver::query query (serv.host_name(), raw_convert<string> (ENCODE_FRAME_PORT));
boost::asio::ip::tcp::resolver::iterator endpoint_iterator = resolver.resolve (query);
shared_ptr<Socket> socket (new Socket (timeout));
socket->connect (*endpoint_iterator);
/* Collect all XML metadata */
xmlpp::Document doc;
xmlpp::Element* root = doc.create_root_node ("EncodingRequest");
root->add_child("Version")->add_child_text (raw_convert<string> (SERVER_LINK_VERSION));
add_metadata (root);
LOG_DEBUG_ENCODE (N_("Sending frame %1 to remote"), _index);
/* Send XML metadata */
string xml = doc.write_to_string ("UTF-8");
socket->write (xml.length() + 1);
socket->write ((uint8_t *) xml.c_str(), xml.length() + 1);
/* Send binary data */
LOG_TIMING("start-remote-send thread=%1", thread_id ());
_frame->send_binary (socket);
/* Read the response (JPEG2000-encoded data); this blocks until the data
is ready and sent back.
*/
LOG_TIMING("start-remote-encode thread=%1", thread_id ());
Data e (socket->read_uint32 ());
LOG_TIMING("start-remote-receive thread=%1", thread_id ());
socket->read (e.data().get(), e.size());
LOG_TIMING("finish-remote-receive thread=%1", thread_id ());
LOG_DEBUG_ENCODE (N_("Finished remotely-encoded frame %1"), _index);
return e;
}
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);
}
Eyes
DCPVideo::eyes () const
{
return _frame->eyes ();
}
/** @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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