2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <boost/shared_ptr.hpp>
22 #include <boost/thread.hpp>
23 #include <boost/thread/condition.hpp>
24 #include "exceptions.h"
33 class MonoPictureAsset;
34 class MonoPictureAssetWriter;
35 class StereoPictureAsset;
36 class StereoPictureAssetWriter;
38 class PictureAssetWriter;
40 class SoundAssetWriter;
47 /** a normal frame with some JPEG200 data */
49 /** a frame whose data already exists in the MXF,
50 and we fake-write it; i.e. we update the writer's
51 state but we use the data that is already on disk.
54 /** this is a repeat of the last frame to be written */
58 /** encoded data for FULL */
59 boost::shared_ptr<const EncodedData> encoded;
60 /** size of data for FAKE */
67 bool operator< (QueueItem const & a, QueueItem const & b);
68 bool operator== (QueueItem const & a, QueueItem const & b);
70 class Writer : public ExceptionStore, public boost::noncopyable
73 Writer (boost::shared_ptr<const Film>, boost::weak_ptr<Job>);
76 bool can_fake_write (int) const;
78 void write (boost::shared_ptr<const EncodedData>, int, Eyes);
79 void fake_write (int, Eyes);
80 void write (boost::shared_ptr<const AudioBuffers>);
81 void repeat (int f, Eyes);
87 void terminate_thread (bool);
88 void check_existing_picture_mxf ();
89 bool check_existing_picture_mxf_frame (FILE *, int, Eyes);
90 bool have_sequenced_image_at_queue_head ();
93 boost::shared_ptr<const Film> _film;
94 boost::weak_ptr<Job> _job;
95 /** the first frame index that does not already exist in our MXF */
96 int _first_nonexistant_frame;
98 /** our thread, or 0 */
99 boost::thread* _thread;
100 /** true if our thread should finish */
102 /** queue of things to write to disk */
103 std::list<QueueItem> _queue;
104 /** number of FULL frames whose JPEG200 data is currently held in RAM */
105 int _queued_full_in_memory;
106 /** mutex for thread state */
107 mutable boost::mutex _mutex;
108 /** condition to manage thread wakeups when we have nothing to do */
109 boost::condition _empty_condition;
110 /** condition to manage thread wakeups when we have too much to do */
111 boost::condition _full_condition;
112 /** the data of the last written frame, or 0 if there isn't one */
113 boost::shared_ptr<const EncodedData> _last_written[EYES_COUNT];
114 /** the index of the last written frame */
115 int _last_written_frame;
116 Eyes _last_written_eyes;
117 /** maximum number of frames to hold in memory, for when we are managing
120 static const int _maximum_frames_in_memory;
122 /** number of FULL written frames */
124 /** number of FAKE written frames */
126 /** number of REPEAT written frames */
128 /** number of frames pushed to disk and then recovered
129 due to the limit of frames to be held in memory.
133 boost::shared_ptr<libdcp::PictureAsset> _picture_asset;
134 boost::shared_ptr<libdcp::PictureAssetWriter> _picture_asset_writer;
135 boost::shared_ptr<libdcp::SoundAsset> _sound_asset;
136 boost::shared_ptr<libdcp::SoundAssetWriter> _sound_asset_writer;