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/*
Copyright (C) 2021 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 "j2k_encoder_remote_backend.h"
#include "player_video.h"
#include "warnings.h"
#include <dcp/raw_convert.h>
DCPOMATIC_DISABLE_WARNINGS
#include <libxml++/libxml++.h>
DCPOMATIC_ENABLE_WARNINGS
#include <boost/asio.hpp>
#include "i18n.h"
using std::make_shared;
using std::string;
using std::vector;
using dcp::raw_convert;
vector<dcp::ArrayData>
J2KEncoderRemoteBackend::encode (vector<DCPVideo> const& all_video)
{
DCPOMATIC_ASSERT (all_video.size() == 1);
auto video = all_video.front();
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(), 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(raw_convert<string>(SERVER_LINK_VERSION));
video.add_metadata (root);
LOG_DEBUG_ENCODE (N_("Sending frame %1 to remote"), video.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());
video.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());
dcp::ArrayData enc(socket->read_uint32());
LOG_TIMING("start-remote-receive thread=%1", thread_id());
socket->read (enc.data(), enc.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"), video.index());
_backoff = 0;
return { enc };
} catch (std::exception& e) {
if (_backoff < 60) {
/* back off more */
_backoff += 10;
}
LOG_ERROR (
N_("Remote encode of %1 on %2 failed (%3); thread sleeping for %4s"),
video.index(), _server.host_name(), e.what(), _backoff
);
return {};
}
}
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