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/*
Copyright (C) 2022 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/>.
*/
#include "config.h"
#include "cross.h"
#include "dcp_video.h"
#include "dcpomatic_log.h"
#include "dcpomatic_socket.h"
#include "exceptions.h"
#include "player_video.h"
#include "remote_j2k_frame_encoder.h"
#include <dcp/raw_convert.h>
#include <dcp/warnings.h>
LIBDCP_DISABLE_WARNINGS
#include <libxml++/libxml++.h>
LIBDCP_ENABLE_WARNINGS
#include <boost/asio.hpp>
#include <boost/thread.hpp>
#include "i18n.h"
using std::make_shared;
using std::shared_ptr;
using std::string;
using boost::optional;
using dcp::ArrayData;
using dcp::Data;
optional<dcp::ArrayData>
RemoteJ2KFrameEncoder::encode(DCPVideo const& vf)
{
optional<dcp::ArrayData> encoded;
try {
boost::asio::io_service io_service;
boost::asio::ip::tcp::resolver resolver (io_service);
boost::asio::ip::tcp::resolver::query query (_server.host_name(), dcp::raw_convert<string>(ENCODE_FRAME_PORT));
auto endpoint_iterator = resolver.resolve (query);
auto socket = make_shared<Socket>(_timeout);
socket->connect (*endpoint_iterator);
/* Collect all XML metadata */
xmlpp::Document doc;
auto root = doc.create_root_node ("EncodingRequest");
root->add_child("Version")->add_child_text(dcp::raw_convert<string>(SERVER_LINK_VERSION));
root->add_child("Index")->add_child_text(dcp::raw_convert<string>(vf.index()));
root->add_child("FramesPerSecond")->add_child_text(dcp::raw_convert<string>(vf.frames_per_second()));
root->add_child("J2KBandwidth")->add_child_text(dcp::raw_convert<string>(vf.j2k_bandwidth()));
root->add_child("Resolution")->add_child_text(dcp::raw_convert<string>(int(vf.resolution())));
vf.frame()->add_metadata(root);
LOG_DEBUG_ENCODE(N_("Sending frame %1 to remote"), vf.index());
{
Socket::WriteDigestScope ds (socket);
/* Send XML metadata */
auto xml = doc.write_to_string ("UTF-8");
socket->write (xml.length() + 1);
socket->write (reinterpret_cast<uint8_t const *>(xml.c_str()), xml.bytes() + 1);
/* Send binary data */
LOG_TIMING("start-remote-send thread=%1", thread_id());
vf.frame()->write_to_socket(socket);
}
/* Read the response (JPEG2000-encoded data); this blocks until the data
is ready and sent back.
*/
Socket::ReadDigestScope ds (socket);
LOG_TIMING("start-remote-encode thread=%1", thread_id());
encoded = ArrayData(socket->read_uint32());
LOG_TIMING("start-remote-receive thread=%1", thread_id());
socket->read (encoded->data(), encoded->size());
LOG_TIMING("finish-remote-receive thread=%1", thread_id());
if (!ds.check()) {
throw NetworkError ("Checksums do not match");
}
LOG_DEBUG_ENCODE (N_("Finished remotely-encoded frame %1"), vf.index());
if (_remote_backoff > 0) {
LOG_GENERAL ("%1 was lost, but now she is found; removing backoff", _server.host_name());
}
/* This job succeeded, so remove any backoff */
_remote_backoff = 0;
} catch (std::exception& e) {
if (_remote_backoff < 60) {
/* back off more */
_remote_backoff += 10;
}
LOG_ERROR (
N_("Remote encode of %1 on %2 failed (%3); thread sleeping for %4s"),
vf.index(), _server.host_name(), e.what(), _remote_backoff
);
}
return encoded;
}
void
RemoteJ2KFrameEncoder::log_thread_start ()
{
LOG_TIMING("start-encoder-thread thread=%1 server=%2", thread_id(), _server.host_name());
}
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