/*
- Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
+ Copyright (C) 2012-2021 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of libdcp.
+
+ libdcp is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ libdcp is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
+ along with libdcp. If not, see <http://www.gnu.org/licenses/>.
+
+ In addition, as a special exception, the copyright holders give
+ permission to link the code of portions of this program with the
+ OpenSSL library under certain conditions as described in each
+ individual source file, and distribute linked combinations
+ including the two.
+
+ You must obey the GNU General Public License in all respects
+ for all of the code used other than OpenSSL. If you modify
+ file(s) with this exception, you may extend this exception to your
+ version of the file(s), but you are not obligated to do so. If you
+ do not wish to do so, delete this exception statement from your
+ version. If you delete this exception statement from all source
+ files in the program, then also delete it here.
*/
-#include <stdint.h>
-#include <string>
-#include <fstream>
-#include <boost/shared_ptr.hpp>
-#include <boost/utility.hpp>
+
+/** @file src/picture_asset_writer.h
+ * @brief PictureAssetWriter and FrameInfo classes.
+ */
+
+
+#ifndef LIBDCP_PICTURE_ASSET_WRITER_H
+#define LIBDCP_PICTURE_ASSET_WRITER_H
+
+
#include "metadata.h"
#include "types.h"
+#include "asset_writer.h"
+#include <memory>
+#include <boost/utility.hpp>
+#include <stdint.h>
+#include <string>
-namespace libdcp {
-class PictureAsset;
+namespace dcp {
+
+class PictureAsset;
+
+
+/** @class FrameInfo
+ * @brief Information about a single frame (either a monoscopic frame or a left *or* right eye stereoscopic frame)
+ */
struct FrameInfo
{
+ FrameInfo () {}
+
FrameInfo (uint64_t o, uint64_t s, std::string h)
: offset (o)
, size (s)
, hash (h)
{}
- FrameInfo (std::istream& s);
-
- void write (std::ostream& s);
-
- uint64_t offset;
- uint64_t size;
+ uint64_t offset = 0;
+ uint64_t size = 0;
std::string hash;
};
-class PictureAssetWriter : public boost::noncopyable
+
+/** @class PictureAssetWriter
+ * @brief Parent class for classes which write picture assets.
+ */
+class PictureAssetWriter : public AssetWriter
{
public:
- virtual ~PictureAssetWriter () {}
- virtual FrameInfo write (uint8_t *, int) = 0;
- virtual void finalize () = 0;
+ virtual FrameInfo write (uint8_t const *, int) = 0;
virtual void fake_write (int) = 0;
-
+
protected:
template <class P, class Q>
- friend void start (PictureAssetWriter *, boost::shared_ptr<P>, Q *, uint8_t *, int);
-
- PictureAssetWriter (PictureAsset *, bool, MXFMetadata const &);
-
- PictureAsset* _asset;
-
- /** Number of picture frames written to the asset so far. For stereo assets
- * this will be incremented for each eye (i.e. there will be twice the number
- * of frames as in a mono asset).
- */
- int _frames_written;
- bool _started;
- /** true if finalize() has been called */
- bool _finalized;
- bool _overwrite;
- MXFMetadata _metadata;
-};
-
-/** A helper class for writing to MonoPictureAssets progressively (i.e. writing frame-by-frame,
- * rather than giving libdcp all the frames in one go).
- *
- * Objects of this class can only be created with MonoPictureAsset::start_write().
- *
- * Frames can be written to the MonoPictureAsset by calling write() with a JPEG2000 image
- * (a verbatim .j2c file). finalize() must be called after the last frame has been written.
- * The action of finalize() can't be done in MonoPictureAssetWriter's destructor as it may
- * throw an exception.
- */
-class MonoPictureAssetWriter : public PictureAssetWriter
-{
-public:
- FrameInfo write (uint8_t *, int);
- void fake_write (int size);
- void finalize ();
-
-private:
- friend class MonoPictureAsset;
-
- MonoPictureAssetWriter (PictureAsset *, bool, MXFMetadata const &);
- void start (uint8_t *, int);
-
- /* do this with an opaque pointer so we don't have to include
- ASDCP headers
- */
-
- struct MonoASDCPState;
- boost::shared_ptr<MonoASDCPState> _state;
-};
+ friend void start (PictureAssetWriter *, std::shared_ptr<P>, Q *, uint8_t const *, int);
-/** A helper class for writing to StereoPictureAssets progressively (i.e. writing frame-by-frame,
- * rather than giving libdcp all the frames in one go).
- *
- * Objects of this class can only be created with StereoPictureAsset::start_write().
- *
- * Frames can be written to the MonoPictureAsset by calling write() with a JPEG2000 image
- * (a verbatim .j2c file). finalize() must be called after the last frame has been written.
- * The action of finalize() can't be done in MonoPictureAssetWriter's destructor as it may
- * throw an exception.
- */
-class StereoPictureAssetWriter : public PictureAssetWriter
-{
-public:
- FrameInfo write (uint8_t *, int);
- void fake_write (int size);
- void finalize ();
+ PictureAssetWriter (PictureAsset *, boost::filesystem::path, bool);
-private:
- friend class StereoPictureAsset;
+ PictureAsset* _picture_asset;
+ bool _overwrite = false;
+};
- StereoPictureAssetWriter (PictureAsset *, bool, MXFMetadata const &);
- void start (uint8_t *, int);
- /* do this with an opaque pointer so we don't have to include
- ASDCP headers
- */
-
- struct StereoASDCPState;
- boost::shared_ptr<StereoASDCPState> _state;
+}
- libdcp::Eye _next_eye;
-};
-}
+#endif
projects / libdcp.git / blobdiff