2 Copyright (C) 2016-2021 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 #include "audio_mapping.h"
23 #include "audio_ring_buffers.h"
24 #include "change_signaller.h"
25 #include "exception_store.h"
26 #include "text_ring_buffers.h"
27 #include "video_ring_buffers.h"
28 #include <boost/asio.hpp>
29 #include <boost/signals2.hpp>
30 #include <boost/thread.hpp>
31 #include <boost/thread/condition.hpp>
38 class Butler : public ExceptionStore
42 std::weak_ptr<const Film> film,
43 std::shared_ptr<Player> player,
46 std::function<AVPixelFormat (AVPixelFormat)> pixel_format,
47 VideoRange video_range,
54 Butler (Butler const&) = delete;
55 Butler& operator= (Butler const&) = delete;
57 void seek (dcpomatic::DCPTime position, bool accurate);
75 std::string summary () const;
78 std::pair<std::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> get_video (bool blocking, Error* e = 0);
79 boost::optional<dcpomatic::DCPTime> get_audio (float* out, Frame frames);
80 boost::optional<TextRingBuffers::Data> get_closed_caption ();
82 void disable_audio ();
84 std::pair<size_t, std::string> memory_used () const;
88 void video (std::shared_ptr<PlayerVideo> video, dcpomatic::DCPTime time);
89 void audio (std::shared_ptr<AudioBuffers> audio, dcpomatic::DCPTime time, int frame_rate);
90 void text (PlayerText pt, TextType type, boost::optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period);
91 bool should_run () const;
92 void prepare (std::weak_ptr<PlayerVideo> video);
93 void player_change (ChangeType type, int property);
94 void seek_unlocked (dcpomatic::DCPTime position, bool accurate);
96 std::weak_ptr<const Film> _film;
97 std::shared_ptr<Player> _player;
98 boost::thread _thread;
100 VideoRingBuffers _video;
101 AudioRingBuffers _audio;
102 TextRingBuffers _closed_caption;
104 boost::thread_group _prepare_pool;
105 boost::asio::io_service _prepare_service;
106 std::shared_ptr<boost::asio::io_service::work> _prepare_work;
108 /** mutex to protect _pending_seek_position, _pending_seek_accurate, _finished, _died, _stop_thread */
110 boost::condition _summon;
111 boost::condition _arrived;
112 boost::optional<dcpomatic::DCPTime> _pending_seek_position;
113 bool _pending_seek_accurate;
117 std::string _died_message;
120 AudioMapping _audio_mapping;
125 std::function<AVPixelFormat (AVPixelFormat)> _pixel_format;
126 VideoRange _video_range;
130 /** If we are waiting to be refilled following a seek, this is the time we were
133 boost::optional<dcpomatic::DCPTime> _awaiting;
135 boost::signals2::scoped_connection _player_video_connection;
136 boost::signals2::scoped_connection _player_audio_connection;
137 boost::signals2::scoped_connection _player_text_connection;
138 boost::signals2::scoped_connection _player_change_connection;