Merge master.
[dcpomatic.git] / src / lib / server.cc
index f8c4425d991f42b4a538e2593b198514ddcd491c..bf7541c3379f1f294f735f4c130b06994b0311d8 100644 (file)
 #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 description from a string of metadata returned from as_metadata().
- *  @param v Metadata.
- *  @return ServerDescription, or 0.
- */
-ServerDescription *
-ServerDescription::create_from_metadata (string v)
-{
-       vector<string> b;
-       split (b, v, is_any_of (" "));
-
-       if (b.size() != 2) {
-               return 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 dcp::Size;
 
-       return new ServerDescription (b[0], atoi (b[1].c_str ()));
-}
-
-/** @return Description of this server as text */
-string
-ServerDescription::as_metadata () const
-{
-       stringstream s;
-       s << _host_name << " " << _threads;
-       return s.str ();
-}
-
-Server::Server (Log* log)
+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.
+ */
 int
-Server::process (shared_ptr<Socket> socket)
+Server::process (shared_ptr<Socket> socket, struct timeval& after_read, struct timeval& after_encode)
 {
-       char buffer[128];
-       socket->read_indefinite ((uint8_t *) buffer, sizeof (buffer), 30);
-       socket->consume (strlen (buffer) + 1);
+       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);
-       
-       string command;
-       s >> command;
-       if (command != "encode") {
+       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;
        }
+
+       dcp::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);
        
-       Size in_size;
-       int pixel_format_int;
-       Size out_size;
-       int padding;
-       string scaler_id;
-       int frame;
-       float frames_per_second;
-       string post_process;
-       int colour_lut_index;
-       int j2k_bandwidth;
-       
-       s >> in_size.width >> in_size.height
-         >> pixel_format_int
-         >> out_size.width >> out_size.height
-         >> padding
-         >> scaler_id
-         >> frame
-         >> frames_per_second
-         >> post_process
-         >> colour_lut_index
-         >> j2k_bandwidth;
-       
-       PixelFormat pixel_format = (PixelFormat) pixel_format_int;
-       Scaler const * scaler = Scaler::from_id (scaler_id);
-       if (post_process == "none") {
-               post_process = "";
-       }
-       
-       shared_ptr<SimpleImage> image (new SimpleImage (pixel_format, in_size));
-       
-       for (int i = 0; i < image->components(); ++i) {
-               int line_size;
-               s >> line_size;
-               image->set_line_size (i, line_size);
-       }
-       
-       for (int i = 0; i < image->components(); ++i) {
-               socket->read_definite_and_consume (image->data()[i], image->line_size()[i] * image->lines(i), 30);
-       }
-       
-       DCPVideoFrame dcp_video_frame (image, out_size, padding, scaler, frame, frames_per_second, post_process, colour_lut_index, j2k_bandwidth, _log);
        shared_ptr<EncodedData> encoded = dcp_video_frame.encode_locally ();
-       encoded->send (socket);
+
+       gettimeofday (&after_encode, 0);
        
-       return frame;
+       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) {
-               mutex::scoped_lock lock (_worker_mutex);
+               boost::mutex::scoped_lock lock (_worker_mutex);
                while (_queue.empty ()) {
                        _worker_condition.wait (lock);
                }
@@ -146,16 +129,24 @@ Server::worker_thread ()
                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);
+                       frame = process (socket, after_read, after_encode);
+                       ip = socket->socket().remote_endpoint().address().to_string();
                } catch (std::exception& e) {
-                       cerr << "Error: " << e.what() << "\n";
+                       _log->log (String::compose ("Error: %1", e.what()));
                }
-               
+
+               gettimeofday (&end, 0);
+
                socket.reset ();
                
                lock.lock ();
@@ -163,9 +154,20 @@ Server::worker_thread ()
                if (frame >= 0) {
                        struct timeval end;
                        gettimeofday (&end, 0);
-                       stringstream s;
-                       s << "Encoded frame " << frame << " in " << (seconds (end) - seconds (start));
-                       _log->log (s.str ());
+
+                       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 ();
@@ -175,21 +177,29 @@ Server::worker_thread ()
 void
 Server::run (int num_threads)
 {
-       stringstream s;
-       s << "Server starting with " << num_threads << " threads.";
-       _log->log (s.str ());
+       _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)));
        }
 
-       asio::io_service io_service;
-       asio::ip::tcp::acceptor acceptor (io_service, asio::ip::tcp::endpoint (asio::ip::tcp::v4(), Config::instance()->server_port ()));
+       _broadcast.thread = new thread (bind (&Server::broadcast_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_base ())
+               );
+       
        while (1) {
                shared_ptr<Socket> socket (new Socket);
                acceptor.accept (socket->socket ());
 
-               mutex::scoped_lock lock (_worker_mutex);
+               boost::mutex::scoped_lock lock (_worker_mutex);
                
                /* Wait until the queue has gone down a bit */
                while (int (_queue.size()) >= num_threads * 2) {
@@ -200,3 +210,58 @@ Server::run (int num_threads)
                _worker_condition.notify_all ();
        }
 }
+
+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 ();
+}
+
+void
+Server::broadcast_received ()
+{
+       _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)
+               );
+}