2 Copyright (C) 2012-2013 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.
23 #include <boost/shared_ptr.hpp>
24 #include <boost/utility.hpp>
34 FrameInfo (uint64_t o, uint64_t s, std::string h)
40 FrameInfo (std::istream& s);
42 void write (std::ostream& s);
49 class PictureAssetWriter : public boost::noncopyable
52 virtual ~PictureAssetWriter () {}
53 virtual FrameInfo write (uint8_t *, int) = 0;
54 virtual void finalize () = 0;
55 virtual void fake_write (int) = 0;
58 template <class P, class Q>
59 friend void start (PictureAssetWriter *, boost::shared_ptr<P>, Q *, uint8_t *, int);
61 PictureAssetWriter (PictureAsset *, bool, MXFMetadata const &);
65 /** Number of picture frames written to the asset so far. For stereo assets
66 * this will be incremented for each eye (i.e. there will be twice the number
67 * of frames as in a mono asset).
71 /** true if finalize() has been called */
74 MXFMetadata _metadata;
77 /** A helper class for writing to MonoPictureAssets progressively (i.e. writing frame-by-frame,
78 * rather than giving libdcp all the frames in one go).
80 * Objects of this class can only be created with MonoPictureAsset::start_write().
82 * Frames can be written to the MonoPictureAsset by calling write() with a JPEG2000 image
83 * (a verbatim .j2c file). finalize() must be called after the last frame has been written.
84 * The action of finalize() can't be done in MonoPictureAssetWriter's destructor as it may
87 class MonoPictureAssetWriter : public PictureAssetWriter
90 FrameInfo write (uint8_t *, int);
91 void fake_write (int size);
95 friend class MonoPictureAsset;
97 MonoPictureAssetWriter (PictureAsset *, bool, MXFMetadata const &);
98 void start (uint8_t *, int);
100 /* do this with an opaque pointer so we don't have to include
105 boost::shared_ptr<ASDCPState> _state;
108 /** A helper class for writing to StereoPictureAssets progressively (i.e. writing frame-by-frame,
109 * rather than giving libdcp all the frames in one go).
111 * Objects of this class can only be created with StereoPictureAsset::start_write().
113 * Frames can be written to the MonoPictureAsset by calling write() with a JPEG2000 image
114 * (a verbatim .j2c file). finalize() must be called after the last frame has been written.
115 * The action of finalize() can't be done in MonoPictureAssetWriter's destructor as it may
116 * throw an exception.
118 class StereoPictureAssetWriter : public PictureAssetWriter
121 FrameInfo write (uint8_t *, int);
122 void fake_write (int size);
126 friend class StereoPictureAsset;
128 StereoPictureAssetWriter (PictureAsset *, bool, MXFMetadata const &);
129 void start (uint8_t *, int);
131 /* do this with an opaque pointer so we don't have to include
136 boost::shared_ptr<ASDCPState> _state;
138 libdcp::Eye _next_eye;