/** @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"
-using namespace std;
-using namespace boost;
+#include "i18n.h"
-/** Create a server from a string of metadata returned from as_metadata().
+using std::string;
+using std::stringstream;
+using std::multimap;
+using std::vector;
+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 libdcp::Size;
+
+ServerDescription::ServerDescription (shared_ptr<const cxml::Node> node)
+{
+ _host_name = node->string_child ("HostName");
+ _threads = node->number_child<int> ("Threads");
+}
+
+void
+ServerDescription::as_xml (xmlpp::Node* root) const
+{
+ root->add_child("HostName")->add_child_text (_host_name);
+ root->add_child("Threads")->add_child_text (boost::lexical_cast<string> (_threads));
+}
+
+/** Create a server description from a string of metadata returned from as_metadata().
* @param v Metadata.
- * @return Server, or 0.
+ * @return ServerDescription, or 0.
*/
-Server *
-Server::create_from_metadata (string v)
+optional<ServerDescription>
+ServerDescription::create_from_metadata (string v)
{
vector<string> b;
- split (b, v, is_any_of (" "));
+ split (b, v, is_any_of (N_(" ")));
if (b.size() != 2) {
- return 0;
+ return optional<ServerDescription> ();
+ }
+
+ return ServerDescription (b[0], atoi (b[1].c_str ()));
+}
+
+Server::Server (shared_ptr<Log> log)
+ : _log (log)
+{
+
+}
+
+int
+Server::process (shared_ptr<Socket> socket)
+{
+ 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) {
+ _log->log ("Mismatched server/client versions");
+ return -1;
}
- return new Server (b[0], atoi (b[1].c_str ()));
+ 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);
+
+ shared_ptr<EncodedData> encoded = dcp_video_frame.encode_locally ();
+ 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;
+
+ struct timeval start;
+ gettimeofday (&start, 0);
+
+ try {
+ frame = process (socket);
+ } catch (std::exception& e) {
+ _log->log (String::compose (N_("Error: %1"), e.what()));
+ }
+
+ socket.reset ();
+
+ lock.lock ();
+
+ if (frame >= 0) {
+ struct timeval end;
+ gettimeofday (&end, 0);
+ _log->log (String::compose (N_("Encoded frame %1 in %2"), frame, seconds (end) - seconds (start)));
+ }
+
+ _worker_condition.notify_all ();
+ }
}
-/** @return Description of this server as text */
-string
-Server::as_metadata () const
+void
+Server::run (int num_threads)
{
- stringstream s;
- s << _host_name << " " << _threads;
- return s.str ();
+ _log->log (String::compose (N_("Server starting with %1 threads"), num_threads));
+
+ for (int i = 0; i < num_threads; ++i) {
+ _worker_threads.push_back (new thread (bind (&Server::worker_thread, this)));
+ }
+
+ boost::asio::io_service io_service;
+ boost::asio::ip::tcp::acceptor acceptor (io_service, boost::asio::ip::tcp::endpoint (boost::asio::ip::tcp::v4(), Config::instance()->server_port ()));
+ 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 ();
+ }
}
projects / dcpomatic.git / blobdiff