/** @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 "server.h"
+#include "util.h"
+#include "scaler.h"
+#include "image.h"
+#include "dcp_video_frame.h"
+#include "config.h"
+#include "subtitle.h"
using namespace std;
using namespace boost;
-/** Create a server from a string of metadata returned from as_metadata().
+/** 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)
+ServerDescription *
+ServerDescription::create_from_metadata (string v)
{
vector<string> b;
split (b, v, is_any_of (" "));
return 0;
}
- return new Server (b[0], atoi (b[1].c_str ()));
+ return new ServerDescription (b[0], atoi (b[1].c_str ()));
}
/** @return Description of this server as text */
string
-Server::as_metadata () const
+ServerDescription::as_metadata () const
{
stringstream s;
s << _host_name << " " << _threads;
return s.str ();
}
+
+Server::Server (Log* log)
+ : _log (log)
+{
+
+}
+
+int
+Server::process (shared_ptr<Socket> socket)
+{
+ char buffer[512];
+ socket->read_indefinite ((uint8_t *) buffer, sizeof (buffer), 30);
+ socket->consume (strlen (buffer) + 1);
+
+ stringstream s (buffer);
+ multimap<string, string> kv = read_key_value (s);
+
+ if (get_required_string (kv, "encode") != "please") {
+ return -1;
+ }
+
+ Size in_size (get_required_int (kv, "input_width"), get_required_int (kv, "input_height"));
+ int pixel_format_int = get_required_int (kv, "input_pixel_format");
+ Size out_size (get_required_int (kv, "output_width"), get_required_int (kv, "output_height"));
+ int padding = get_required_int (kv, "padding");
+ int subtitle_offset = get_required_int (kv, "subtitle_offset");
+ float subtitle_scale = get_required_float (kv, "subtitle_scale");
+ string scaler_id = get_required_string (kv, "scaler");
+ int frame = get_required_int (kv, "frame");
+ int frames_per_second = get_required_int (kv, "frames_per_second");
+ string post_process = get_optional_string (kv, "post_process");
+ int colour_lut_index = get_required_int (kv, "colour_lut");
+ int j2k_bandwidth = get_required_int (kv, "j2k_bandwidth");
+ Position subtitle_position (get_optional_int (kv, "subtitle_x"), get_optional_int (kv, "subtitle_y"));
+ Size subtitle_size (get_optional_int (kv, "subtitle_width"), get_optional_int (kv, "subtitle_height"));
+
+ /* This checks that colour_lut_index is within range */
+ colour_lut_index_to_name (colour_lut_index);
+
+ PixelFormat pixel_format = (PixelFormat) pixel_format_int;
+ Scaler const * scaler = Scaler::from_id (scaler_id);
+
+ shared_ptr<Image> image (new AlignedImage (pixel_format, in_size));
+
+ image->read_from_socket (socket);
+
+ shared_ptr<Subtitle> sub;
+ if (subtitle_size.width && subtitle_size.height) {
+ shared_ptr<Image> subtitle_image (new AlignedImage (PIX_FMT_RGBA, subtitle_size));
+ subtitle_image->read_from_socket (socket);
+ sub.reset (new Subtitle (subtitle_position, subtitle_image));
+ }
+
+ DCPVideoFrame dcp_video_frame (
+ image, sub, out_size, padding, subtitle_offset, subtitle_scale,
+ 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);
+
+ return frame;
+}
+
+void
+Server::worker_thread ()
+{
+ while (1) {
+ 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) {
+ cerr << "Error: " << e.what() << "\n";
+ }
+
+ socket.reset ();
+
+ lock.lock ();
+
+ if (frame >= 0) {
+ struct timeval end;
+ gettimeofday (&end, 0);
+ _log->log (String::compose ("Encoded frame %1 in %2", frame, seconds (end) - seconds (start)));
+ }
+
+ _worker_condition.notify_all ();
+ }
+}
+
+void
+Server::run (int num_threads)
+{
+ _log->log (String::compose ("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)));
+ }
+
+ asio::io_service io_service;
+ asio::ip::tcp::acceptor acceptor (io_service, asio::ip::tcp::endpoint (asio::ip::tcp::v4(), Config::instance()->server_port ()));
+ while (1) {
+ shared_ptr<Socket> socket (new Socket);
+ acceptor.accept (socket->socket ());
+
+ 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