*/
+#ifndef LIBDCP_PICTURE_ASSET_H
+#define LIBDCP_PICTURE_ASSET_H
+
/** @file src/picture_asset.h
* @brief An asset made up of JPEG2000 files
*/
#include <openjpeg.h>
-#include "AS_DCP.h"
#include "mxf_asset.h"
#include "util.h"
class PictureAsset : public MXFAsset
{
public:
+ /** Construct a PictureAsset.
+ * This class will not write anything to disk in this constructor, but subclasses may.
+ *
+ * @param directory Directory where MXF file is.
+ * @param mxf_name Name of MXF file.
+ */
+ PictureAsset (std::string directory, std::string mxf_name);
+
+ /** Construct a PictureAsset.
+ * This class will not write anything to disk in this constructor, but subclasses may.
+ *
+ * @param directory Directory where MXF file is.
+ * @param mxf_name Name of MXF file.
+ * @param progress Signal to use to inform of progres, or 0.
+ * @param fps Video Frames per second.
+ * @param intrinsic_duration Duration of all the frames in the asset.
+ * @param size Size of video frame images in pixels.
+ */
PictureAsset (std::string directory, std::string mxf_name, boost::signals2::signal<void (float)>* progress, int fps, int intrinsic_duration, Size size);
/** Write details of this asset to a CPL stream.
class MonoPictureAsset;
+struct 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;
+ std::string hash;
+};
+
+/** 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 .j2 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:
~MonoPictureAssetWriter ();
- void write (uint8_t* data, int size);
+ FrameInfo write (uint8_t* data, int size);
+ void fake_write (int size);
void finalize ();
private:
friend class MonoPictureAsset;
-
- MonoPictureAssetWriter (MonoPictureAsset *);
- ASDCP::JP2K::CodestreamParser _j2k_parser;
- ASDCP::JP2K::FrameBuffer _frame_buffer;
- ASDCP::JP2K::MXFWriter _mxf_writer;
- ASDCP::WriterInfo _writer_info;
- ASDCP::JP2K::PictureDescriptor _picture_descriptor;
+ MonoPictureAssetWriter (MonoPictureAsset *, bool);
+ void start (uint8_t *, int);
+
+ /* no copy construction */
+ MonoPictureAssetWriter (MonoPictureAssetWriter const &);
+ MonoPictureAssetWriter& operator= (MonoPictureAssetWriter const &);
+
+ /* do this with an opaque pointer so we don't have to include
+ ASDCP headers
+ */
+
+ struct ASDCPState;
+ boost::shared_ptr<ASDCPState> _state;
+
MonoPictureAsset* _asset;
+ /** Number of picture frames written to the asset so far */
int _frames_written;
+ bool _started;
+ /** true if finalize() has been called */
bool _finalized;
+ bool _overwrite;
};
/** A 2D (monoscopic) picture asset */
class MonoPictureAsset : public PictureAsset
{
public:
- /** Construct a PictureAsset, generating the MXF from the JPEG2000 files.
+ /** Construct a MonoPictureAsset, generating the MXF from the JPEG2000 files.
* This may take some time; progress is indicated by emission of the Progress signal.
+ *
* @param files Pathnames of JPEG2000 files, in frame order.
* @param directory Directory in which to create MXF file.
* @param mxf_name Name of MXF file to create.
* @param progress Signal to inform of progress.
- * @param fps Frames per second.
+ * @param fps Video frames per second.
* @param intrinsic_duration Length of the whole asset in frames.
* @param size Size of images in pixels.
*/
Size size
);
- /** Construct a PictureAsset, generating the MXF from the JPEG2000 files.
+ /** Construct a MonoPictureAsset, generating the MXF from the JPEG2000 files.
* This may take some time; progress is indicated by emission of the Progress signal.
+ *
* @param get_path Functor which returns a JPEG2000 file path for a given frame (frames counted from 0).
* @param directory Directory in which to create MXF file.
* @param mxf_name Name of MXF file to create.
* @param progress Signal to inform of progress.
- * @param fps Frames per second.
+ * @param fps Video frames per second.
* @param intrinsic_duration Length of the whole asset in frames.
* @param size Size of images in pixels.
*/
Size size
);
- MonoPictureAsset (
- std::string directory,
- std::string mxf_name,
- int fps,
- Size size
- );
+ /** Construct a MonoPictureAsset, reading the MXF from disk.
+ * @param directory Directory that the MXF is in.
+ * @param mxf_name The filename of the MXF within `directory'.
+ */
+ MonoPictureAsset (std::string directory, std::string mxf_name);
+
+ /** Construct a MonoPictureAsset for progressive writing using
+ * start_write() and a MonoPictureAssetWriter.
+ *
+ * @param directory Directory to put the MXF in.
+ * @param mxf_name Filename of the MXF within this directory.
+ * @param fps Video frames per second.
+ * @param size Size in pixels that the picture frames will be.
+ */
+ MonoPictureAsset (std::string directory, std::string mxf_name, int fps, Size size);
- boost::shared_ptr<MonoPictureAssetWriter> start_write ();
+ /** Start a progressive write to a MonoPictureAsset */
+ boost::shared_ptr<MonoPictureAssetWriter> start_write (bool);
- MonoPictureAsset (std::string directory, std::string mxf_name, int fps, int intrinsic_duration);
-
boost::shared_ptr<const MonoPictureFrame> get_frame (int n) const;
bool equals (boost::shared_ptr<const Asset> other, EqualityOptions opt, std::list<std::string>& notes) const;
}
+
+#endif
projects / libdcp.git / blobdiff