/** @file src/server.cc
* @brief Class to describe a server to which we can send
- * encoding work.
+ * encoding work, and a class to implement such a server.
*/
#include <string>
#include <vector>
#include <sstream>
+#include <iostream>
#include <boost/algorithm/string.hpp>
+#include <boost/lexical_cast.hpp>
+#include <boost/scoped_array.hpp>
+#include <libcxml/cxml.h>
#include "server.h"
+#include "util.h"
+#include "scaler.h"
+#include "image.h"
+#include "dcp_video_frame.h"
+#include "config.h"
+#include "cross.h"
-using namespace std;
-using namespace boost;
+#include "i18n.h"
-/** Create a server from a string of metadata returned from as_metadata().
- * @param v Metadata.
- * @return Server, or 0.
+using std::string;
+using std::stringstream;
+using std::multimap;
+using std::vector;
+using std::list;
+using std::cout;
+using std::cerr;
+using std::setprecision;
+using std::fixed;
+using boost::shared_ptr;
+using boost::algorithm::is_any_of;
+using boost::algorithm::split;
+using boost::thread;
+using boost::bind;
+using boost::scoped_array;
+using boost::optional;
+using boost::lexical_cast;
+using libdcp::Size;
+
+Server::Server (shared_ptr<Log> log, bool verbose)
+ : _log (log)
+ , _verbose (verbose)
+{
+
+}
+
+/** @param after_read Filled in with gettimeofday() after reading the input from the network.
+ * @param after_encode Filled in with gettimeofday() after encoding the image.
*/
-Server *
-Server::create_from_metadata (string v)
+int
+Server::process (shared_ptr<Socket> socket, struct timeval& after_read, struct timeval& after_encode)
+{
+ uint32_t length = socket->read_uint32 ();
+ scoped_array<char> buffer (new char[length]);
+ socket->read (reinterpret_cast<uint8_t*> (buffer.get()), length);
+
+ stringstream s (buffer.get());
+ shared_ptr<cxml::Document> xml (new cxml::Document ("EncodingRequest"));
+ xml->read_stream (s);
+ if (xml->number_child<int> ("Version") != SERVER_LINK_VERSION) {
+ cerr << "Mismatched server/client versions\n";
+ _log->log ("Mismatched server/client versions");
+ return -1;
+ }
+
+ libdcp::Size size (
+ xml->number_child<int> ("Width"), xml->number_child<int> ("Height")
+ );
+
+ shared_ptr<Image> image (new Image (PIX_FMT_RGB24, size, true));
+
+ image->read_from_socket (socket);
+ DCPVideoFrame dcp_video_frame (image, xml, _log);
+
+ gettimeofday (&after_read, 0);
+
+ shared_ptr<EncodedData> encoded = dcp_video_frame.encode_locally ();
+
+ gettimeofday (&after_encode, 0);
+
+ try {
+ encoded->send (socket);
+ } catch (std::exception& e) {
+ _log->log (String::compose (
+ "Send failed; frame %1, data size %2, pixel format %3, image size %4x%5, %6 components",
+ dcp_video_frame.frame(), encoded->size(), image->pixel_format(), image->size().width, image->size().height, image->components()
+ )
+ );
+ throw;
+ }
+
+ return dcp_video_frame.frame ();
+}
+
+void
+Server::worker_thread ()
+{
+ while (1) {
+ boost::mutex::scoped_lock lock (_worker_mutex);
+ while (_queue.empty ()) {
+ _worker_condition.wait (lock);
+ }
+
+ shared_ptr<Socket> socket = _queue.front ();
+ _queue.pop_front ();
+
+ lock.unlock ();
+
+ int frame = -1;
+ string ip;
+
+ struct timeval start;
+ struct timeval after_read;
+ struct timeval after_encode;
+ struct timeval end;
+
+ gettimeofday (&start, 0);
+
+ try {
+ frame = process (socket, after_read, after_encode);
+ ip = socket->socket().remote_endpoint().address().to_string();
+ } catch (std::exception& e) {
+ _log->log (String::compose ("Error: %1", e.what()));
+ }
+
+ gettimeofday (&end, 0);
+
+ socket.reset ();
+
+ lock.lock ();
+
+ if (frame >= 0) {
+ struct timeval end;
+ gettimeofday (&end, 0);
+
+ stringstream message;
+ message.precision (2);
+ message << fixed
+ << "Encoded frame " << frame << " from " << ip << ": "
+ << "receive " << (seconds(after_read) - seconds(start)) << "s "
+ << "encode " << (seconds(after_encode) - seconds(after_read)) << "s "
+ << "send " << (seconds(end) - seconds(after_encode)) << "s.";
+
+ if (_verbose) {
+ cout << message.str() << "\n";
+ }
+
+ _log->log (message.str ());
+ }
+
+ _worker_condition.notify_all ();
+ }
+}
+
+void
+Server::run (int num_threads)
{
- vector<string> b;
- split (b, v, is_any_of (" "));
+ _log->log (String::compose ("Server starting with %1 threads", num_threads));
+ if (_verbose) {
+ cout << "DCP-o-matic server starting with " << num_threads << " threads.\n";
+ }
+
+ for (int i = 0; i < num_threads; ++i) {
+ _worker_threads.push_back (new thread (bind (&Server::worker_thread, this)));
+ }
+
+ _broadcast.thread = new thread (bind (&Server::broadcast_thread, this));
+
+ boost::asio::io_service io_service;
- if (b.size() != 2) {
- return 0;
+ boost::asio::ip::tcp::acceptor acceptor (
+ io_service,
+ boost::asio::ip::tcp::endpoint (boost::asio::ip::tcp::v4(), Config::instance()->server_port_base ())
+ );
+
+ while (1) {
+ shared_ptr<Socket> socket (new Socket);
+ acceptor.accept (socket->socket ());
+
+ boost::mutex::scoped_lock lock (_worker_mutex);
+
+ /* Wait until the queue has gone down a bit */
+ while (int (_queue.size()) >= num_threads * 2) {
+ _worker_condition.wait (lock);
+ }
+
+ _queue.push_back (socket);
+ _worker_condition.notify_all ();
}
+}
- return new Server (b[0], atoi (b[1].c_str ()));
+void
+Server::broadcast_thread ()
+try
+{
+ boost::asio::io_service io_service;
+
+ boost::asio::ip::address address = boost::asio::ip::address_v4::any ();
+ boost::asio::ip::udp::endpoint listen_endpoint (address, Config::instance()->server_port_base() + 1);
+
+ _broadcast.socket = new boost::asio::ip::udp::socket (io_service);
+ _broadcast.socket->open (listen_endpoint.protocol ());
+ _broadcast.socket->bind (listen_endpoint);
+
+ _broadcast.socket->async_receive_from (
+ boost::asio::buffer (_broadcast.buffer, sizeof (_broadcast.buffer)),
+ _broadcast.send_endpoint,
+ boost::bind (&Server::broadcast_received, this)
+ );
+
+ io_service.run ();
+}
+catch (...)
+{
+ store_current ();
}
-/** @return Description of this server as text */
-string
-Server::as_metadata () const
+void
+Server::broadcast_received ()
{
- stringstream s;
- s << _host_name << " " << _threads;
- return s.str ();
+ _broadcast.buffer[sizeof(_broadcast.buffer) - 1] = '\0';
+
+ if (strcmp (_broadcast.buffer, DCPOMATIC_HELLO) == 0) {
+ /* Reply to the client saying what we can do */
+ xmlpp::Document doc;
+ xmlpp::Element* root = doc.create_root_node ("ServerAvailable");
+ root->add_child("Threads")->add_child_text (lexical_cast<string> (_worker_threads.size ()));
+ stringstream xml;
+ doc.write_to_stream (xml, "UTF-8");
+
+ shared_ptr<Socket> socket (new Socket);
+ try {
+ socket->connect (boost::asio::ip::tcp::endpoint (_broadcast.send_endpoint.address(), Config::instance()->server_port_base() + 1));
+ socket->write (xml.str().length() + 1);
+ socket->write ((uint8_t *) xml.str().c_str(), xml.str().length() + 1);
+ } catch (...) {
+
+ }
+ }
+
+ _broadcast.socket->async_receive_from (
+ boost::asio::buffer (_broadcast.buffer, sizeof (_broadcast.buffer)),
+ _broadcast.send_endpoint, boost::bind (&Server::broadcast_received, this)
+ );
}
projects / dcpomatic.git / blobdiff