2 Copyright (C) 2012-2018 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
21 /** @file src/encode_server.cc
22 * @brief Class to describe a server to which we can send
23 * encoding work, and a class to implement such a server.
26 #include "encode_server.h"
28 #include "dcpomatic_socket.h"
30 #include "dcp_video.h"
33 #include "player_video.h"
34 #include "compose.hpp"
36 #include "dcpomatic_log.h"
37 #include "encoded_log_entry.h"
39 #include <dcp/raw_convert.h>
40 #include <libcxml/cxml.h>
41 #include <libxml++/libxml++.h>
42 #include <boost/algorithm/string.hpp>
43 #include <boost/scoped_array.hpp>
44 #include <boost/foreach.hpp>
45 #ifdef HAVE_VALGRIND_H
46 #include <valgrind/memcheck.h>
60 using boost::shared_ptr;
63 using boost::scoped_array;
64 using boost::optional;
67 using dcp::raw_convert;
69 EncodeServer::EncodeServer (bool verbose, int num_threads)
70 #if !defined(RUNNING_ON_VALGRIND) || RUNNING_ON_VALGRIND == 0
71 : Server (ENCODE_FRAME_PORT)
73 : Server (ENCODE_FRAME_PORT, 2400)
76 , _num_threads (num_threads)
81 EncodeServer::~EncodeServer ()
84 boost::mutex::scoped_lock lm (_mutex);
86 _empty_condition.notify_all ();
87 _full_condition.notify_all ();
90 BOOST_FOREACH (boost::thread* i, _worker_threads) {
91 /* Ideally this would be a DCPOMATIC_ASSERT(i->joinable()) but we
92 can't throw exceptions from a destructor.
101 boost::mutex::scoped_lock lm (_broadcast.mutex);
102 if (_broadcast.socket) {
103 _broadcast.socket->close ();
104 delete _broadcast.socket;
105 _broadcast.socket = 0;
109 _broadcast.io_service.stop ();
110 if (_broadcast.thread) {
111 /* Ideally this would be a DCPOMATIC_ASSERT(_broadcast.thread->joinable()) but we
112 can't throw exceptions from a destructor.
114 if (_broadcast.thread->joinable ()) {
115 _broadcast.thread->join ();
117 delete _broadcast.thread;
121 /** @param after_read Filled in with gettimeofday() after reading the input from the network.
122 * @param after_encode Filled in with gettimeofday() after encoding the image.
125 EncodeServer::process (shared_ptr<Socket> socket, struct timeval& after_read, struct timeval& after_encode)
127 uint32_t length = socket->read_uint32 ();
128 scoped_array<char> buffer (new char[length]);
129 socket->read (reinterpret_cast<uint8_t*> (buffer.get()), length);
131 string s (buffer.get());
132 shared_ptr<cxml::Document> xml (new cxml::Document ("EncodingRequest"));
133 xml->read_string (s);
134 /* This is a double-check; the server shouldn't even be on the candidate list
135 if it is the wrong version, but it doesn't hurt to make sure here.
137 if (xml->number_child<int> ("Version") != SERVER_LINK_VERSION) {
138 cerr << "Mismatched server/client versions\n";
139 LOG_ERROR_NC ("Mismatched server/client versions");
143 shared_ptr<PlayerVideo> pvf (new PlayerVideo (xml, socket));
145 DCPVideo dcp_video_frame (pvf, xml);
147 gettimeofday (&after_read, 0);
149 Data encoded = dcp_video_frame.encode_locally ();
151 gettimeofday (&after_encode, 0);
154 socket->write (encoded.size());
155 socket->write (encoded.data().get(), encoded.size());
156 } catch (std::exception& e) {
157 cerr << "Send failed; frame " << dcp_video_frame.index() << "\n";
158 LOG_ERROR ("Send failed; frame %1", dcp_video_frame.index());
162 return dcp_video_frame.index ();
166 EncodeServer::worker_thread ()
169 boost::mutex::scoped_lock lock (_mutex);
170 while (_queue.empty () && !_terminate) {
171 _empty_condition.wait (lock);
178 shared_ptr<Socket> socket = _queue.front ();
186 struct timeval start;
187 struct timeval after_read;
188 struct timeval after_encode;
191 gettimeofday (&start, 0);
194 frame = process (socket, after_read, after_encode);
195 ip = socket->socket().remote_endpoint().address().to_string();
196 } catch (std::exception& e) {
197 cerr << "Error: " << e.what() << "\n";
198 LOG_ERROR ("Error: %1", e.what());
201 gettimeofday (&end, 0);
209 gettimeofday (&end, 0);
211 shared_ptr<EncodedLogEntry> e (
212 new EncodedLogEntry (
214 seconds(after_read) - seconds(start),
215 seconds(after_encode) - seconds(after_read),
216 seconds(end) - seconds(after_encode)
221 cout << e->get() << "\n";
224 dcpomatic_log->log (e);
227 _full_condition.notify_all ();
234 LOG_GENERAL ("Server %1 (%2) starting with %3 threads", dcpomatic_version, dcpomatic_git_commit, _num_threads);
236 cout << "DCP-o-matic server starting with " << _num_threads << " threads.\n";
239 for (int i = 0; i < _num_threads; ++i) {
240 thread* t = new thread (bind (&EncodeServer::worker_thread, this));
241 #ifdef DCPOMATIC_LINUX
242 pthread_setname_np (t->native_handle(), "encode-server-worker");
244 _worker_threads.push_back (t);
247 _broadcast.thread = new thread (bind (&EncodeServer::broadcast_thread, this));
248 #ifdef DCPOMATIC_LINUX
249 pthread_setname_np (_broadcast.thread->native_handle(), "encode-server-broadcast");
256 EncodeServer::broadcast_thread ()
259 boost::asio::ip::address address = boost::asio::ip::address_v4::any ();
260 boost::asio::ip::udp::endpoint listen_endpoint (address, HELLO_PORT);
262 _broadcast.socket = new boost::asio::ip::udp::socket (_broadcast.io_service);
263 _broadcast.socket->open (listen_endpoint.protocol ());
264 _broadcast.socket->bind (listen_endpoint);
266 _broadcast.socket->async_receive_from (
267 boost::asio::buffer (_broadcast.buffer, sizeof (_broadcast.buffer)),
268 _broadcast.send_endpoint,
269 boost::bind (&EncodeServer::broadcast_received, this)
272 _broadcast.io_service.run ();
280 EncodeServer::broadcast_received ()
282 _broadcast.buffer[sizeof(_broadcast.buffer) - 1] = '\0';
284 if (strcmp (_broadcast.buffer, DCPOMATIC_HELLO) == 0) {
285 /* Reply to the client saying what we can do */
287 xmlpp::Element* root = doc.create_root_node ("ServerAvailable");
288 root->add_child("Threads")->add_child_text (raw_convert<string> (_worker_threads.size ()));
289 root->add_child("Version")->add_child_text (raw_convert<string> (SERVER_LINK_VERSION));
290 string xml = doc.write_to_string ("UTF-8");
293 cout << "Offering services to master " << _broadcast.send_endpoint.address().to_string () << "\n";
297 shared_ptr<Socket> socket (new Socket);
298 socket->connect (boost::asio::ip::tcp::endpoint (_broadcast.send_endpoint.address(), MAIN_SERVER_PRESENCE_PORT));
299 socket->write (xml.length() + 1);
300 socket->write ((uint8_t *) xml.c_str(), xml.length() + 1);
306 shared_ptr<Socket> socket (new Socket);
307 socket->connect (boost::asio::ip::tcp::endpoint (_broadcast.send_endpoint.address(), BATCH_SERVER_PRESENCE_PORT));
308 socket->write (xml.length() + 1);
309 socket->write ((uint8_t *) xml.c_str(), xml.length() + 1);
315 boost::mutex::scoped_lock lm (_broadcast.mutex);
316 if (_broadcast.socket) {
317 _broadcast.socket->async_receive_from (
318 boost::asio::buffer (_broadcast.buffer, sizeof (_broadcast.buffer)),
319 _broadcast.send_endpoint, boost::bind (&EncodeServer::broadcast_received, this)
325 EncodeServer::handle (shared_ptr<Socket> socket)
327 boost::mutex::scoped_lock lock (_mutex);
329 /* Wait until the queue has gone down a bit */
330 while (_queue.size() >= _worker_threads.size() * 2 && !_terminate) {
331 _full_condition.wait (lock);
334 _queue.push_back (socket);
335 _empty_condition.notify_all ();