Make Atmos content work more like other content. Now its MXFs
[dcpomatic.git] / src / lib / player.h
1 /*
2     Copyright (C) 2013-2020 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 #ifndef DCPOMATIC_PLAYER_H
22 #define DCPOMATIC_PLAYER_H
23
24 #include "atmos_metadata.h"
25 #include "player_text.h"
26 #include "active_text.h"
27 #include "content_text.h"
28 #include "film.h"
29 #include "content.h"
30 #include "content_atmos.h"
31 #include "position_image.h"
32 #include "piece.h"
33 #include "content_video.h"
34 #include "content_audio.h"
35 #include "audio_stream.h"
36 #include "audio_merger.h"
37 #include "empty.h"
38 #include <boost/shared_ptr.hpp>
39 #include <boost/enable_shared_from_this.hpp>
40 #include <boost/atomic.hpp>
41 #include <list>
42
43 namespace dcp {
44         class ReelAsset;
45 }
46
47 namespace dcpomatic {
48         class Font;
49 }
50
51 class AtmosContent;
52 class PlayerVideo;
53 class Playlist;
54 class AudioBuffers;
55 class ReferencedReelAsset;
56 class Shuffler;
57
58 class PlayerProperty
59 {
60 public:
61         static int const VIDEO_CONTAINER_SIZE;
62         static int const PLAYLIST;
63         static int const FILM_CONTAINER;
64         static int const FILM_VIDEO_FRAME_RATE;
65         static int const DCP_DECODE_REDUCTION;
66         static int const PLAYBACK_LENGTH;
67 };
68
69 /** @class Player
70  *  @brief A class which can play a Playlist.
71  */
72 class Player : public boost::enable_shared_from_this<Player>, public boost::noncopyable
73 {
74 public:
75         Player (boost::shared_ptr<const Film>);
76         Player (boost::shared_ptr<const Film>, boost::shared_ptr<const Playlist> playlist);
77         ~Player ();
78
79         bool pass ();
80         void seek (dcpomatic::DCPTime time, bool accurate);
81
82         std::list<boost::shared_ptr<dcpomatic::Font> > get_subtitle_fonts ();
83         std::list<ReferencedReelAsset> get_reel_assets ();
84         dcp::Size video_container_size () const {
85                 boost::mutex::scoped_lock lm (_mutex);
86                 return _video_container_size;
87         }
88
89         void set_video_container_size (dcp::Size);
90         void set_ignore_video ();
91         void set_ignore_audio ();
92         void set_ignore_text ();
93         void set_always_burn_open_subtitles ();
94         void set_fast ();
95         void set_play_referenced ();
96         void set_dcp_decode_reduction (boost::optional<int> reduction);
97
98         boost::optional<dcpomatic::DCPTime> content_time_to_dcp (boost::shared_ptr<Content> content, dcpomatic::ContentTime t);
99
100         boost::signals2::signal<void (ChangeType, int, bool)> Change;
101
102         /** Emitted when a video frame is ready.  These emissions happen in the correct order. */
103         boost::signals2::signal<void (boost::shared_ptr<PlayerVideo>, dcpomatic::DCPTime)> Video;
104         boost::signals2::signal<void (boost::shared_ptr<AudioBuffers>, dcpomatic::DCPTime, int)> Audio;
105         /** Emitted when a text is ready.  This signal may be emitted considerably
106          *  after the corresponding Video.
107          */
108         boost::signals2::signal<void (PlayerText, TextType, boost::optional<DCPTextTrack>, dcpomatic::DCPTimePeriod)> Text;
109         boost::signals2::signal<void (boost::shared_ptr<const dcp::AtmosFrame>, dcpomatic::DCPTime, AtmosMetadata)> Atmos;
110
111 private:
112         friend class PlayerWrapper;
113         friend class Piece;
114         friend struct player_time_calculation_test1;
115         friend struct player_time_calculation_test2;
116         friend struct player_time_calculation_test3;
117         friend struct player_subframe_test;
118         friend struct empty_test1;
119         friend struct empty_test2;
120         friend struct check_reuse_old_data_test;
121
122         void construct ();
123         void setup_pieces ();
124         void setup_pieces_unlocked ();
125         void flush ();
126         void film_change (ChangeType, Film::Property);
127         void playlist_change (ChangeType);
128         void playlist_content_change (ChangeType, int, bool);
129         Frame dcp_to_content_video (boost::shared_ptr<const Piece> piece, dcpomatic::DCPTime t) const;
130         dcpomatic::DCPTime content_video_to_dcp (boost::shared_ptr<const Piece> piece, Frame f) const;
131         Frame dcp_to_resampled_audio (boost::shared_ptr<const Piece> piece, dcpomatic::DCPTime t) const;
132         dcpomatic::DCPTime resampled_audio_to_dcp (boost::shared_ptr<const Piece> piece, Frame f) const;
133         dcpomatic::ContentTime dcp_to_content_time (boost::shared_ptr<const Piece> piece, dcpomatic::DCPTime t) const;
134         dcpomatic::DCPTime content_time_to_dcp (boost::shared_ptr<const Piece> piece, dcpomatic::ContentTime t) const;
135         boost::shared_ptr<PlayerVideo> black_player_video_frame (Eyes eyes) const;
136
137         void video (boost::weak_ptr<Piece>, ContentVideo);
138         void audio (boost::weak_ptr<Piece>, AudioStreamPtr, ContentAudio);
139         void bitmap_text_start (boost::weak_ptr<Piece>, boost::weak_ptr<const TextContent>, ContentBitmapText);
140         void plain_text_start (boost::weak_ptr<Piece>, boost::weak_ptr<const TextContent>, ContentStringText);
141         void subtitle_stop (boost::weak_ptr<Piece>, boost::weak_ptr<const TextContent>, dcpomatic::ContentTime);
142         void atmos (boost::weak_ptr<Piece>, ContentAtmos);
143
144         dcpomatic::DCPTime one_video_frame () const;
145         void fill_audio (dcpomatic::DCPTimePeriod period);
146         std::pair<boost::shared_ptr<AudioBuffers>, dcpomatic::DCPTime> discard_audio (
147                 boost::shared_ptr<const AudioBuffers> audio, dcpomatic::DCPTime time, dcpomatic::DCPTime discard_to
148                 ) const;
149         boost::optional<PositionImage> open_subtitles_for_frame (dcpomatic::DCPTime time) const;
150         void emit_video (boost::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
151         void do_emit_video (boost::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
152         void emit_audio (boost::shared_ptr<AudioBuffers> data, dcpomatic::DCPTime time);
153         boost::shared_ptr<const Playlist> playlist () const;
154
155         /** Mutex to protect the whole Player state.  When it's used for the preview we have
156             seek() and pass() called from the Butler thread and lots of other stuff called
157             from the GUI thread.
158         */
159         mutable boost::mutex _mutex;
160
161         boost::shared_ptr<const Film> _film;
162         /** Playlist, or 0 if we are using the one from the _film */
163         boost::shared_ptr<const Playlist> _playlist;
164
165         /** > 0 if we are suspended (i.e. pass() and seek() do nothing) */
166         boost::atomic<int> _suspended;
167         std::list<boost::shared_ptr<Piece> > _pieces;
168
169         /** Size of the image we are rendering to; this may be the DCP frame size, or
170          *  the size of preview in a window.
171          */
172         dcp::Size _video_container_size;
173         boost::shared_ptr<Image> _black_image;
174
175         /** true if the player should ignore all video; i.e. never produce any */
176         bool _ignore_video;
177         bool _ignore_audio;
178         /** true if the player should ignore all text; i.e. never produce any */
179         bool _ignore_text;
180         bool _always_burn_open_subtitles;
181         /** true if we should try to be fast rather than high quality */
182         bool _fast;
183         /** true if we should keep going in the face of `survivable' errors */
184         bool _tolerant;
185         /** true if we should `play' (i.e output) referenced DCP data (e.g. for preview) */
186         bool _play_referenced;
187
188         /** Time just after the last video frame we emitted, or the time of the last accurate seek */
189         boost::optional<dcpomatic::DCPTime> _last_video_time;
190         boost::optional<Eyes> _last_video_eyes;
191         /** Time just after the last audio frame we emitted, or the time of the last accurate seek */
192         boost::optional<dcpomatic::DCPTime> _last_audio_time;
193
194         boost::optional<int> _dcp_decode_reduction;
195
196         typedef std::map<boost::weak_ptr<Piece>, boost::shared_ptr<PlayerVideo> > LastVideoMap;
197         LastVideoMap _last_video;
198
199         AudioMerger _audio_merger;
200         Shuffler* _shuffler;
201         std::list<std::pair<boost::shared_ptr<PlayerVideo>, dcpomatic::DCPTime> > _delay;
202
203         class StreamState
204         {
205         public:
206                 StreamState () {}
207
208                 StreamState (boost::shared_ptr<Piece> p, dcpomatic::DCPTime l)
209                         : piece(p)
210                         , last_push_end(l)
211                 {}
212
213                 boost::shared_ptr<Piece> piece;
214                 dcpomatic::DCPTime last_push_end;
215         };
216         std::map<AudioStreamPtr, StreamState> _stream_states;
217
218         Empty _black;
219         Empty _silent;
220
221         ActiveText _active_texts[TEXT_COUNT];
222         boost::shared_ptr<AudioProcessor> _audio_processor;
223
224         dcpomatic::DCPTime _playback_length;
225
226         boost::signals2::scoped_connection _film_changed_connection;
227         boost::signals2::scoped_connection _playlist_change_connection;
228         boost::signals2::scoped_connection _playlist_content_change_connection;
229 };
230
231 #endif