X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fencoder.cc;h=5268d8620f65377fef796df3613e834ab4e98deb;hb=1671e097a24cd169f1ad4ea89b0cb3ae105b1e70;hp=a442e64d07fffdea9efbb8320d537a3f4a8908e6;hpb=f8678dcae5f90eb946ad6e51d9a62e0c02bc63e3;p=dcpomatic.git diff --git a/src/lib/encoder.cc b/src/lib/encoder.cc index a442e64d0..5268d8620 100644 --- a/src/lib/encoder.cc +++ b/src/lib/encoder.cc @@ -1,439 +1,47 @@ /* - Copyright (C) 2012 Carl Hetherington + Copyright (C) 2012-2017 Carl Hetherington - This program is free software; you can redistribute it and/or modify + This file is part of DCP-o-matic. + + DCP-o-matic is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. - This program is distributed in the hope that it will be useful, + DCP-o-matic is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + along with DCP-o-matic. If not, see . */ -/** @file src/encoder.h - * @brief Parent class for classes which can encode video and audio frames. - */ - -#include -#include -#include -#include "encoder.h" -#include "util.h" -#include "film.h" -#include "log.h" -#include "config.h" -#include "dcp_video_frame.h" -#include "server.h" -#include "cross.h" -#include "writer.h" - -#include "i18n.h" - -using std::pair; -using std::string; -using std::stringstream; -using std::vector; -using std::list; -using std::cout; -using std::min; -using std::make_pair; -using boost::shared_ptr; -using boost::optional; -using boost::scoped_array; - -int const Encoder::_history_size = 25; - -/** @param f Film that we are encoding */ -Encoder::Encoder (shared_ptr f, shared_ptr j) - : _film (f) - , _job (j) - , _video_frames_out (0) - , _terminate (false) - , _broadcast_thread (0) - , _listen_thread (0) -{ - _have_a_real_frame[EYES_BOTH] = false; - _have_a_real_frame[EYES_LEFT] = false; - _have_a_real_frame[EYES_RIGHT] = false; -} -Encoder::~Encoder () -{ - terminate_threads (); - if (_writer) { - _writer->finish (); - } -} - -/** Add a worker thread for a each thread on a remote server. Caller must hold - * a lock on _mutex, or know that one is not currently required to - * safely modify _threads. +/** @file src/encoder.cc + * @brief A class which takes a Film and some Options, then uses those to encode the film + * into some output format. + * + * A decoder is selected according to the content type, and the encoder can be specified + * as a parameter to the constructor. */ -void -Encoder::add_worker_threads (ServerDescription d) -{ - for (int i = 0; i < d.threads(); ++i) { - _threads.push_back ( - make_pair (d, new boost::thread (boost::bind (&Encoder::encoder_thread, this, d))) - ); - } -} - -void -Encoder::process_begin () -{ - for (int i = 0; i < Config::instance()->num_local_encoding_threads (); ++i) { - _threads.push_back ( - make_pair ( - optional (), - new boost::thread (boost::bind (&Encoder::encoder_thread, this, optional ())) - ) - ); - } - - vector servers = Config::instance()->servers (); - - for (vector::iterator i = servers.begin(); i != servers.end(); ++i) { - add_worker_threads (*i); - } - - _broadcast_thread = new boost::thread (boost::bind (&Encoder::broadcast_thread, this)); - _listen_thread = new boost::thread (boost::bind (&Encoder::listen_thread, this)); - _writer.reset (new Writer (_film, _job)); -} - - -void -Encoder::process_end () -{ - boost::mutex::scoped_lock lock (_mutex); - - _film->log()->log (String::compose (N_("Clearing queue of %1"), _queue.size ())); - - /* Keep waking workers until the queue is empty */ - while (!_queue.empty ()) { - _film->log()->log (String::compose (N_("Waking with %1"), _queue.size ()), Log::VERBOSE); - _condition.notify_all (); - _condition.wait (lock); - } - - lock.unlock (); - - terminate_threads (); - - _film->log()->log (String::compose (N_("Mopping up %1"), _queue.size())); - - /* The following sequence of events can occur in the above code: - 1. a remote worker takes the last image off the queue - 2. the loop above terminates - 3. the remote worker fails to encode the image and puts it back on the queue - 4. the remote worker is then terminated by terminate_threads - - So just mop up anything left in the queue here. - */ - - for (list >::iterator i = _queue.begin(); i != _queue.end(); ++i) { - _film->log()->log (String::compose (N_("Encode left-over frame %1"), (*i)->frame ())); - try { - _writer->write ((*i)->encode_locally(), (*i)->frame (), (*i)->eyes ()); - frame_done (); - } catch (std::exception& e) { - _film->log()->log (String::compose (N_("Local encode failed (%1)"), e.what ())); - } - } - - _writer->finish (); - _writer.reset (); -} -/** @return an estimate of the current number of frames we are encoding per second, - * or 0 if not known. - */ -float -Encoder::current_encoding_rate () const -{ - boost::mutex::scoped_lock lock (_state_mutex); - if (int (_time_history.size()) < _history_size) { - return 0; - } - - struct timeval now; - gettimeofday (&now, 0); +#include "encoder.h" +#include "player.h" - return _history_size / (seconds (now) - seconds (_time_history.back ())); -} +#include "i18n.h" -/** @return Number of video frames that have been sent out */ -int -Encoder::video_frames_out () const -{ - boost::mutex::scoped_lock (_state_mutex); - return _video_frames_out; -} -/** Should be called when a frame has been encoded successfully. - * @param n Source frame index. +/** Construct an encoder. + * @param film Film that we are encoding. + * @param job Job that this encoder is being used in. */ -void -Encoder::frame_done () +Encoder::Encoder (std::shared_ptr film, std::weak_ptr job) + : _film (film) + , _job (job) + , _player(film, Image::Alignment::PADDED) { - boost::mutex::scoped_lock lock (_state_mutex); - - struct timeval tv; - gettimeofday (&tv, 0); - _time_history.push_front (tv); - if (int (_time_history.size()) > _history_size) { - _time_history.pop_back (); - } -} - -void -Encoder::process_video (shared_ptr image, Eyes eyes, ColourConversion conversion, bool same) -{ - boost::mutex::scoped_lock lock (_mutex); - - /* XXX: discard 3D here if required */ - - /* Wait until the queue has gone down a bit */ - while (_queue.size() >= _threads.size() * 2 && !_terminate) { - TIMING ("decoder sleeps with queue of %1", _queue.size()); - _condition.wait (lock); - TIMING ("decoder wakes with queue of %1", _queue.size()); - } - - if (_terminate) { - return; - } - - if (_writer->thrown ()) { - _writer->rethrow (); - } - - if (_writer->can_fake_write (_video_frames_out)) { - _writer->fake_write (_video_frames_out, eyes); - _have_a_real_frame[eyes] = false; - frame_done (); - } else if (same && _have_a_real_frame[eyes]) { - /* Use the last frame that we encoded. */ - _writer->repeat (_video_frames_out, eyes); - frame_done (); - } else { - /* Queue this new frame for encoding */ - TIMING ("adding to queue of %1", _queue.size ()); - _queue.push_back (shared_ptr ( - new DCPVideoFrame ( - image, _video_frames_out, eyes, conversion, _film->video_frame_rate(), - _film->j2k_bandwidth(), _film->log() - ) - )); - - _condition.notify_all (); - _have_a_real_frame[eyes] = true; - } - - if (eyes != EYES_LEFT) { - ++_video_frames_out; - } -} - -void -Encoder::process_audio (shared_ptr data) -{ - _writer->write (data); -} - -void -Encoder::terminate_threads () -{ - { - boost::mutex::scoped_lock lock (_mutex); - _terminate = true; - _condition.notify_all (); - } - - for (ThreadList::iterator i = _threads.begin(); i != _threads.end(); ++i) { - if (i->second->joinable ()) { - i->second->join (); - } - delete i->second; - } - - _threads.clear (); - - if (_broadcast_thread && _broadcast_thread->joinable ()) { - _broadcast_thread->join (); - } - delete _broadcast_thread; - - if (_listen_thread && _listen_thread->joinable ()) { - _listen_thread->join (); - } - delete _listen_thread; -} - -void -Encoder::encoder_thread (optional server) -{ - /* Number of seconds that we currently wait between attempts - to connect to the server; not relevant for localhost - encodings. - */ - int remote_backoff = 0; - - while (1) { - - TIMING ("encoder thread %1 sleeps", boost::this_thread::get_id()); - boost::mutex::scoped_lock lock (_mutex); - while (_queue.empty () && !_terminate) { - _condition.wait (lock); - } - - if (_terminate) { - return; - } - - TIMING ("encoder thread %1 wakes with queue of %2", boost::this_thread::get_id(), _queue.size()); - shared_ptr vf = _queue.front (); - _film->log()->log (String::compose (N_("Encoder thread %1 pops frame %2 (%3) from queue"), boost::this_thread::get_id(), vf->frame(), vf->eyes ())); - _queue.pop_front (); - - lock.unlock (); - - shared_ptr encoded; - - if (server) { - try { - encoded = vf->encode_remotely (server.get ()); - - if (remote_backoff > 0) { - _film->log()->log (String::compose (N_("%1 was lost, but now she is found; removing backoff"), server->host_name ())); - } - - /* This job succeeded, so remove any backoff */ - remote_backoff = 0; - - } catch (std::exception& e) { - if (remote_backoff < 60) { - /* back off more */ - remote_backoff += 10; - } - _film->log()->log ( - String::compose ( - N_("Remote encode of %1 on %2 failed (%3); thread sleeping for %4s"), - vf->frame(), server->host_name(), e.what(), remote_backoff) - ); - } - - } else { - try { - TIMING ("encoder thread %1 begins local encode of %2", boost::this_thread::get_id(), vf->frame()); - encoded = vf->encode_locally (); - TIMING ("encoder thread %1 finishes local encode of %2", boost::this_thread::get_id(), vf->frame()); - } catch (std::exception& e) { - _film->log()->log (String::compose (N_("Local encode failed (%1)"), e.what ())); - } - } - - if (encoded) { - _writer->write (encoded, vf->frame (), vf->eyes ()); - frame_done (); - } else { - lock.lock (); - _film->log()->log ( - String::compose (N_("Encoder thread %1 pushes frame %2 back onto queue after failure"), boost::this_thread::get_id(), vf->frame()) - ); - _queue.push_front (vf); - lock.unlock (); - } - - if (remote_backoff > 0) { - dcpomatic_sleep (remote_backoff); - } - - lock.lock (); - _condition.notify_all (); - } -} - -void -Encoder::broadcast_thread () -{ - boost::system::error_code error; - boost::asio::io_service io_service; - boost::asio::ip::udp::socket socket (io_service); - socket.open (boost::asio::ip::udp::v4(), error); - if (error) { - throw NetworkError ("failed to set up broadcast socket"); - } - - socket.set_option (boost::asio::ip::udp::socket::reuse_address (true)); - socket.set_option (boost::asio::socket_base::broadcast (true)); - - boost::asio::ip::udp::endpoint end_point (boost::asio::ip::address_v4::broadcast(), Config::instance()->server_port_base() + 1); - - while (1) { - boost::mutex::scoped_lock lm (_mutex); - if (_terminate) { - socket.close (error); - return; - } - - string data = DCPOMATIC_HELLO; - socket.send_to (boost::asio::buffer (data.c_str(), data.size() + 1), end_point); - - lm.unlock (); - dcpomatic_sleep (10); - } -} - -void -Encoder::listen_thread () -{ - while (1) { - { - /* See if we need to stop */ - boost::mutex::scoped_lock lm (_mutex); - if (_terminate) { - return; - } - } - - shared_ptr sock (new Socket (10)); - - try { - sock->accept (Config::instance()->server_port_base() + 1); - } catch (std::exception& e) { - continue; - } - - uint32_t length = sock->read_uint32 (); - scoped_array buffer (new char[length]); - sock->read (reinterpret_cast (buffer.get()), length); - - stringstream s (buffer.get()); - shared_ptr xml (new cxml::Document ("ServerAvailable")); - xml->read_stream (s); - - { - /* See if we already know about this server */ - string const ip = sock->socket().remote_endpoint().address().to_string (); - boost::mutex::scoped_lock lm (_mutex); - ThreadList::iterator i = _threads.begin(); - while (i != _threads.end() && (!i->first || i->first->host_name() != ip)) { - ++i; - } - if (i == _threads.end ()) { - add_worker_threads (ServerDescription (ip, xml->number_child ("Threads"))); - } - } - } }