2 Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
4 This file is part of DCP-o-matic.
6 DCP-o-matic is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 DCP-o-matic is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef DCPOMATIC_J2K_ENCODER_H
23 #define DCPOMATIC_J2K_ENCODER_H
26 /** @file src/j2k_encoder.h
27 * @brief J2KEncoder class.
32 #include "enum_indexed_vector.h"
33 #include "event_history.h"
34 #include "exception_store.h"
35 #include "j2k_encoder_thread.h"
37 #include "video_encoder.h"
38 #include <boost/optional.hpp>
39 #include <boost/signals2.hpp>
40 #include <boost/thread.hpp>
41 #include <boost/thread/condition.hpp>
42 #include <boost/thread/mutex.hpp>
48 class EncodeServerDescription;
53 namespace grk_plugin {
54 struct DcpomaticContext;
58 struct local_threads_created_and_destroyed;
59 struct remote_threads_created_and_destroyed;
60 struct frames_not_lost_when_threads_disappear;
64 * @brief Class to manage encoding to J2K.
66 * This class keeps a queue of frames to be encoded and distributes
67 * the work around threads and encoding servers.
69 class J2KEncoder : public VideoEncoder, public ExceptionStore
72 J2KEncoder(std::shared_ptr<const Film> film, Writer& writer);
75 J2KEncoder (J2KEncoder const&) = delete;
76 J2KEncoder& operator= (J2KEncoder const&) = delete;
78 /** Called to indicate that a processing run is about to begin */
79 void begin() override;
81 /** Called to pass a bit of video to be encoded as the next DCP frame */
82 void encode (std::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time) override;
84 void pause() override;
85 void resume() override;
87 /** Called when a processing run has finished */
91 void retry(DCPVideo frame);
92 void write(std::shared_ptr<const dcp::Data> data, int index, Eyes eyes);
95 friend struct ::local_threads_created_and_destroyed;
96 friend struct ::remote_threads_created_and_destroyed;
97 friend struct ::frames_not_lost_when_threads_disappear;
100 void servers_list_changed ();
101 void remake_threads(int cpu, int gpu, std::list<EncodeServerDescription> servers);
102 void terminate_threads ();
104 boost::mutex _threads_mutex;
105 std::vector<std::shared_ptr<J2KEncoderThread>> _threads;
107 mutable boost::mutex _queue_mutex;
108 std::list<DCPVideo> _queue;
109 /** condition to manage thread wakeups when we have nothing to do */
110 boost::condition _empty_condition;
111 /** condition to manage thread wakeups when we have too much to do */
112 boost::condition _full_condition;
116 EnumIndexedVector<std::shared_ptr<PlayerVideo>, Eyes> _last_player_video;
118 boost::signals2::scoped_connection _server_found_connection;
120 #ifdef DCPOMATIC_GROK
121 grk_plugin::DcpomaticContext* _dcpomatic_context = nullptr;
122 grk_plugin::GrokContext *_context = nullptr;
125 bool _ending = false;