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>
30 class MonoPictureAsset;
31 class MonoPictureAssetWriter;
33 class SoundAssetWriter;
40 /** a normal frame with some JPEG200 data */
42 /** a frame whose data already exists in the MXF,
43 and we fake-write it; i.e. we update the writer's
44 state but we use the data that is already on disk.
47 /** this is a repeat of the last frame to be written */
51 /** encoded data for FULL */
52 boost::shared_ptr<const EncodedData> encoded;
53 /** size of data for FAKE */
59 bool operator< (QueueItem const & a, QueueItem const & b);
60 bool operator== (QueueItem const & a, QueueItem const & b);
65 Writer (boost::shared_ptr<Film>);
67 bool can_fake_write (int) const;
69 void write (boost::shared_ptr<const EncodedData>, int);
70 void fake_write (int);
71 void write (boost::shared_ptr<const AudioBuffers>);
78 void check_existing_picture_mxf ();
81 boost::shared_ptr<Film> _film;
82 /** the first frame index that does not already exist in our MXF */
83 int _first_nonexistant_frame;
85 /** our thread, or 0 */
86 boost::thread* _thread;
87 /** true if our thread should finish */
89 /** queue of things to write to disk */
90 std::list<QueueItem> _queue;
91 /** number of FULL frames whose JPEG200 data is currently held in RAM */
92 int _queued_full_in_memory;
93 /** mutex for thread state */
94 mutable boost::mutex _mutex;
95 /** condition to manage thread wakeups */
96 boost::condition _condition;
97 /** the data of the last written frame, or 0 if there isn't one */
98 boost::shared_ptr<const EncodedData> _last_written;
99 /** the index of the last written frame */
100 int _last_written_frame;
101 /** maximum number of frames to hold in memory, for when we are managing
104 static const int _maximum_frames_in_memory;
106 /** number of FULL written frames */
108 /** number of FAKE written frames */
110 /** number of REPEAT written frames */
112 /** number of frames pushed to disk and then recovered
113 due to the limit of frames to be held in memory.
117 boost::shared_ptr<libdcp::MonoPictureAsset> _picture_asset;
118 boost::shared_ptr<libdcp::MonoPictureAssetWriter> _picture_asset_writer;
119 boost::shared_ptr<libdcp::SoundAsset> _sound_asset;
120 boost::shared_ptr<libdcp::SoundAssetWriter> _sound_asset_writer;