X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fserver.cc;h=38f9834ff3be354a74361fc60cd6b787fe119748;hb=a605b22381ee47d2737307e0b61e3423b020547b;hp=8a5b5cfca604564aadaf5abe0531060d052800f3;hpb=bb767c7e338414beee132af3e96829c1448e214b;p=dcpomatic.git diff --git a/src/lib/server.cc b/src/lib/server.cc index 8a5b5cfca..38f9834ff 100644 --- a/src/lib/server.cc +++ b/src/lib/server.cc @@ -19,24 +19,39 @@ /** @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 #include #include +#include #include +#include #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; +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; -/** 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 b; split (b, v, is_any_of (" ")); @@ -45,14 +60,152 @@ Server::create_from_metadata (string v) 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) +{ + char buffer[512]; + socket->read_indefinite ((uint8_t *) buffer, sizeof (buffer), 30); + socket->consume (strlen (buffer) + 1); + + stringstream s (buffer); + multimap 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 (new AlignedImage (pixel_format, in_size)); + + image->read_from_socket (socket); + + shared_ptr sub; + if (subtitle_size.width && subtitle_size.height) { + shared_ptr 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 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", + frame, encoded->size(), image->pixel_format(), image->size().width, image->size().height, image->components() + ) + ); + throw; + } + + return frame; +} + +void +Server::worker_thread () +{ + while (1) { + boost::mutex::scoped_lock lock (_worker_mutex); + while (_queue.empty ()) { + _worker_condition.wait (lock); + } + + shared_ptr 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 ("Error: %1", e.what())); + } + + 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))); + } + + 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 (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 (); + } +}