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.
20 /** @file src/picture_asset.h
21 * @brief An asset made up of JPEG2000 files
25 #include "mxf_asset.h"
31 class MonoPictureFrame;
32 class StereoPictureFrame;
34 /** @brief An asset made up of JPEG2000 files */
35 class PictureAsset : public MXFAsset
38 /** Construct a PictureAsset.
39 * This class will not write anything to disk in this constructor, but subclasses may.
41 * @param directory Directory where MXF file is.
42 * @param mxf_name Name of MXF file.
44 PictureAsset (std::string directory, std::string mxf_name);
46 /** Construct a PictureAsset.
47 * This class will not write anything to disk in this constructor, but subclasses may.
49 * @param directory Directory where MXF file is.
50 * @param mxf_name Name of MXF file.
51 * @param progress Signal to use to inform of progres, or 0.
52 * @param fps Video Frames per second.
53 * @param intrinsic_duration Duration of all the frames in the asset.
54 * @param size Size of video frame images in pixels.
56 PictureAsset (std::string directory, std::string mxf_name, boost::signals2::signal<void (float)>* progress, int fps, int intrinsic_duration, Size size);
58 /** Write details of this asset to a CPL stream.
61 void write_to_cpl (std::ostream& s) const;
63 bool equals (boost::shared_ptr<const Asset> other, EqualityOptions opt, std::list<std::string>& notes) const;
71 bool frame_buffer_equals (
72 int frame, EqualityOptions opt, std::list<std::string>& notes,
73 uint8_t const * data_A, unsigned int size_A, uint8_t const * data_B, unsigned int size_B
76 /** picture size in pixels */
80 class MonoPictureAsset;
82 /** A helper class for writing to MonoPictureAssets progressively (i.e. writing frame-by-frame,
83 * rather than giving libdcp all the frames in one go).
85 * Objects of this class can only be created with MonoPictureAsset::start_write().
87 * Frames can be written to the MonoPictureAsset by calling write() with a JPEG2000 image
88 * (a verbatim .j2 file). finalize() must be called after the last frame has been written.
89 * The action of finalize() can't be done in MonoPictureAssetWriter's destructor as it may
92 class MonoPictureAssetWriter
95 ~MonoPictureAssetWriter ();
97 void write (uint8_t* data, int size);
101 friend class MonoPictureAsset;
103 MonoPictureAssetWriter (MonoPictureAsset *);
105 /* no copy construction */
106 MonoPictureAssetWriter (MonoPictureAssetWriter const &);
107 MonoPictureAssetWriter& operator= (MonoPictureAssetWriter const &);
109 /* do this with an opaque pointer so we don't have to include
114 boost::shared_ptr<ASDCPState> _state;
116 MonoPictureAsset* _asset;
117 /** Number of picture frames written to the asset so far */
119 /** true if finalize() has been called */
123 /** A 2D (monoscopic) picture asset */
124 class MonoPictureAsset : public PictureAsset
127 /** Construct a MonoPictureAsset, generating the MXF from the JPEG2000 files.
128 * This may take some time; progress is indicated by emission of the Progress signal.
130 * @param files Pathnames of JPEG2000 files, in frame order.
131 * @param directory Directory in which to create MXF file.
132 * @param mxf_name Name of MXF file to create.
133 * @param progress Signal to inform of progress.
134 * @param fps Video frames per second.
135 * @param intrinsic_duration Length of the whole asset in frames.
136 * @param size Size of images in pixels.
139 std::vector<std::string> const & files,
140 std::string directory,
141 std::string mxf_name,
142 boost::signals2::signal<void (float)>* progress,
144 int intrinsic_duration,
148 /** Construct a MonoPictureAsset, generating the MXF from the JPEG2000 files.
149 * This may take some time; progress is indicated by emission of the Progress signal.
151 * @param get_path Functor which returns a JPEG2000 file path for a given frame (frames counted from 0).
152 * @param directory Directory in which to create MXF file.
153 * @param mxf_name Name of MXF file to create.
154 * @param progress Signal to inform of progress.
155 * @param fps Video frames per second.
156 * @param intrinsic_duration Length of the whole asset in frames.
157 * @param size Size of images in pixels.
160 boost::function<std::string (int)> get_path,
161 std::string directory,
162 std::string mxf_name,
163 boost::signals2::signal<void (float)>* progress,
165 int intrinsic_duration,
169 /** Construct a MonoPictureAsset, reading the MXF from disk.
170 * @param directory Directory that the MXF is in.
171 * @param mxf_name The filename of the MXF within `directory'.
173 MonoPictureAsset (std::string directory, std::string mxf_name);
175 /** Construct a MonoPictureAsset for progressive writing using
176 * start_write() and a MonoPictureAssetWriter.
178 * @param directory Directory to put the MXF in.
179 * @param mxf_name Filename of the MXF within this directory.
180 * @param fps Video frames per second.
181 * @param size Size in pixels that the picture frames will be.
183 MonoPictureAsset (std::string directory, std::string mxf_name, int fps, Size size);
185 /** Start a progressive write to a MonoPictureAsset */
186 boost::shared_ptr<MonoPictureAssetWriter> start_write ();
188 boost::shared_ptr<const MonoPictureFrame> get_frame (int n) const;
189 bool equals (boost::shared_ptr<const Asset> other, EqualityOptions opt, std::list<std::string>& notes) const;
192 std::string path_from_list (int f, std::vector<std::string> const & files) const;
193 void construct (boost::function<std::string (int)>);
196 /** A 3D (stereoscopic) picture asset */
197 class StereoPictureAsset : public PictureAsset
200 StereoPictureAsset (std::string directory, std::string mxf_name, int fps, int intrinsic_duration);
202 boost::shared_ptr<const StereoPictureFrame> get_frame (int n) const;
203 bool equals (boost::shared_ptr<const Asset> other, EqualityOptions opt, std::list<std::string>& notes) const;