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/>.
21 #include "audio_mapping.h"
22 #include "audio_ring_buffers.h"
23 #include "change_signaller.h"
24 #include "exception_store.h"
25 #include "text_ring_buffers.h"
26 #include "video_ring_buffers.h"
27 #include <boost/asio.hpp>
28 #include <boost/signals2.hpp>
29 #include <boost/thread.hpp>
30 #include <boost/thread/condition.hpp>
35 class Butler : public ExceptionStore, public boost::noncopyable
39 std::weak_ptr<const Film> film,
40 std::shared_ptr<Player> player,
43 boost::function<AVPixelFormat (AVPixelFormat)> pixel_format,
44 VideoRange video_range,
51 void seek (dcpomatic::DCPTime position, bool accurate);
69 std::string summary () const;
72 std::pair<std::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> get_video (bool blocking, Error* e = 0);
73 boost::optional<dcpomatic::DCPTime> get_audio (float* out, Frame frames);
74 boost::optional<TextRingBuffers::Data> get_closed_caption ();
76 void disable_audio ();
78 std::pair<size_t, std::string> memory_used () const;
82 void video (std::shared_ptr<PlayerVideo> video, dcpomatic::DCPTime time);
83 void audio (std::shared_ptr<AudioBuffers> audio, dcpomatic::DCPTime time, int frame_rate);
84 void text (PlayerText pt, TextType type, boost::optional<DCPTextTrack> track, dcpomatic::DCPTimePeriod period);
85 bool should_run () const;
86 void prepare (std::weak_ptr<PlayerVideo> video);
87 void player_change (ChangeType type, int property);
88 void seek_unlocked (dcpomatic::DCPTime position, bool accurate);
90 std::weak_ptr<const Film> _film;
91 std::shared_ptr<Player> _player;
92 boost::thread _thread;
94 VideoRingBuffers _video;
95 AudioRingBuffers _audio;
96 TextRingBuffers _closed_caption;
98 boost::thread_group _prepare_pool;
99 boost::asio::io_service _prepare_service;
100 std::shared_ptr<boost::asio::io_service::work> _prepare_work;
102 /** mutex to protect _pending_seek_position, _pending_seek_accurate, _finished, _died, _stop_thread */
104 boost::condition _summon;
105 boost::condition _arrived;
106 boost::optional<dcpomatic::DCPTime> _pending_seek_position;
107 bool _pending_seek_accurate;
111 std::string _died_message;
114 AudioMapping _audio_mapping;
119 boost::function<AVPixelFormat (AVPixelFormat)> _pixel_format;
120 VideoRange _video_range;
124 /** If we are waiting to be refilled following a seek, this is the time we were
127 boost::optional<dcpomatic::DCPTime> _awaiting;
129 boost::signals2::scoped_connection _player_video_connection;
130 boost::signals2::scoped_connection _player_audio_connection;
131 boost::signals2::scoped_connection _player_text_connection;
132 boost::signals2::scoped_connection _player_change_connection;