Clean up grok's presence in the config file and make sure it's optional.
[dcpomatic.git] / src / lib / j2k_encoder.h
1 /*
2     Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
3
4     This file is part of DCP-o-matic.
5
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.
10
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.
15
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/>.
18
19 */
20
21
22 #ifndef DCPOMATIC_J2K_ENCODER_H
23 #define DCPOMATIC_J2K_ENCODER_H
24
25
26 /** @file  src/j2k_encoder.h
27  *  @brief J2KEncoder class.
28  */
29
30
31 #include "cross.h"
32 #include "enum_indexed_vector.h"
33 #include "event_history.h"
34 #include "exception_store.h"
35 #include "j2k_encoder_thread.h"
36 #include "writer.h"
37 #include <boost/optional.hpp>
38 #include <boost/signals2.hpp>
39 #include <boost/thread.hpp>
40 #include <boost/thread/condition.hpp>
41 #include <boost/thread/mutex.hpp>
42 #include <list>
43 #include <stdint.h>
44
45
46 class DCPVideo;
47 class EncodeServerDescription;
48 class Film;
49 class Job;
50 class PlayerVideo;
51
52 namespace grk_plugin {
53         struct DcpomaticContext;
54         struct GrokContext;
55 }
56
57 struct local_threads_created_and_destroyed;
58 struct remote_threads_created_and_destroyed;
59 struct frames_not_lost_when_threads_disappear;
60
61
62 /** @class J2KEncoder
63  *  @brief Class to manage encoding to J2K.
64  *
65  *  This class keeps a queue of frames to be encoded and distributes
66  *  the work around threads and encoding servers.
67  */
68 class J2KEncoder : public ExceptionStore
69 {
70 public:
71         J2KEncoder(std::shared_ptr<const Film> film, Writer& writer);
72         ~J2KEncoder ();
73
74         J2KEncoder (J2KEncoder const&) = delete;
75         J2KEncoder& operator= (J2KEncoder const&) = delete;
76
77         /** Called to indicate that a processing run is about to begin */
78         void begin ();
79
80         /** Called to pass a bit of video to be encoded as the next DCP frame */
81         void encode (std::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
82
83         void pause();
84         void resume();
85
86         /** Called when a processing run has finished */
87         void end();
88
89         boost::optional<float> current_encoding_rate () const;
90         int video_frames_enqueued () const;
91
92         DCPVideo pop();
93         void retry(DCPVideo frame);
94         void write(std::shared_ptr<const dcp::Data> data, int index, Eyes eyes);
95
96 private:
97         friend struct ::local_threads_created_and_destroyed;
98         friend struct ::remote_threads_created_and_destroyed;
99         friend struct ::frames_not_lost_when_threads_disappear;
100
101         void frame_done ();
102         void servers_list_changed ();
103         void remake_threads(int cpu, int gpu, std::list<EncodeServerDescription> servers);
104         void terminate_threads ();
105
106         /** Film that we are encoding */
107         std::shared_ptr<const Film> _film;
108
109         EventHistory _history;
110
111         boost::mutex _threads_mutex;
112         std::vector<std::shared_ptr<J2KEncoderThread>> _threads;
113
114         mutable boost::mutex _queue_mutex;
115         std::list<DCPVideo> _queue;
116         /** condition to manage thread wakeups when we have nothing to do */
117         boost::condition _empty_condition;
118         /** condition to manage thread wakeups when we have too much to do */
119         boost::condition _full_condition;
120
121         Writer& _writer;
122         Waker _waker;
123
124         EnumIndexedVector<std::shared_ptr<PlayerVideo>, Eyes> _last_player_video;
125         boost::optional<dcpomatic::DCPTime> _last_player_video_time;
126
127         boost::signals2::scoped_connection _server_found_connection;
128
129 #ifdef DCPOMATIC_GROK
130         grk_plugin::DcpomaticContext* _dcpomatic_context = nullptr;
131         grk_plugin::GrokContext *_context = nullptr;
132 #endif
133
134         bool _ending = false;
135 };
136
137
138 #endif