+
+ //
+ namespace TimedText
+ {
+ enum MIMEType_t { MT_BIN, MT_PNG, MT_OPENTYPE };
+
+ struct TimedTextResourceDescriptor
+ {
+ byte_t ResourceID[UUIDlen];
+ MIMEType_t Type;
+
+ TimedTextResourceDescriptor() : Type(MT_BIN) {}
+ };
+
+ typedef std::list<TimedTextResourceDescriptor> ResourceList_t;
+
+ struct TimedTextDescriptor
+ {
+ Rational EditRate; //
+ ui32_t ContainerDuration;
+ byte_t AssetID[UUIDlen];
+ std::string NamespaceName;
+ std::string EncodingName;
+ ResourceList_t ResourceList;
+
+ TimedTextDescriptor() : ContainerDuration(0), EncodingName("UTF-8") {} // D-Cinema format is always UTF-8
+ };
+
+ // Print debugging information to stream (stderr default)
+ void DescriptorDump(const TimedTextDescriptor&, FILE* = 0);
+
+ //
+ class FrameBuffer : public ASDCP::FrameBuffer
+ {
+ ASDCP_NO_COPY_CONSTRUCT(FrameBuffer); // TODO: should have copy construct
+
+ protected:
+ byte_t m_AssetID[UUIDlen];
+ std::string m_MIMEType;
+
+ public:
+ FrameBuffer() { memset(m_AssetID, 0, UUIDlen); }
+ FrameBuffer(ui32_t size) { Capacity(size); memset(m_AssetID, 0, UUIDlen); }
+ virtual ~FrameBuffer() {}
+
+ inline const byte_t* AssetID() const { return m_AssetID; }
+ inline void AssetID(const byte_t* buf) { memcpy(m_AssetID, buf, UUIDlen); }
+ inline const char* MIMEType() const { return m_MIMEType.c_str(); }
+ inline void MIMEType(const std::string& s) { m_MIMEType = s; }
+
+ // Print debugging information to stream (stderr default)
+ void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
+ };
+
+ //
+ class IResourceResolver
+ {
+ public:
+ virtual ~IResourceResolver() {}
+ virtual Result_t ResolveRID(const byte_t* uuid, FrameBuffer&) const = 0; // return data for RID
+ };
+
+ //
+ class DCSubtitleParser
+ {
+ class h__SubtitleParser;
+ mem_ptr<h__SubtitleParser> m_Parser;
+ ASDCP_NO_COPY_CONSTRUCT(DCSubtitleParser);
+
+ public:
+ DCSubtitleParser();
+ virtual ~DCSubtitleParser();
+
+ // Opens the XML file for reading, parse data to provide a complete
+ // set of stream metadata for the MXFWriter below.
+ Result_t OpenRead(const char* filename) const;
+
+ // Fill a TimedTextDescriptor struct with the values from the file's contents.
+ // Returns RESULT_INIT if the file is not open.
+ Result_t FillDescriptor(TimedTextDescriptor&) const;
+
+ // Reads the complete Timed Text Resource into the given string.
+ Result_t ReadTimedTextResource(std::string&) const;
+
+ // Reads the Ancillary Resource having the given ID. Fails if the buffer
+ // is too small or the resource does not exist. The optional Resolver
+ // argument can be provided which will be used to retrieve the resource
+ // having a particulat UUID. If a Resolver is not supplied, the default
+ // internal resolver will return the contents of the file having the UUID
+ // as the filename. The filename must exist in the same directory as the
+ // XML file opened with OpenRead().
+ Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&,
+ const IResourceResolver* Resolver = 0) const;
+ };
+
+ //
+ class MXFWriter
+ {
+ class h__Writer;
+ mem_ptr<h__Writer> m_Writer;
+ ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
+
+ public:
+ MXFWriter();
+ virtual ~MXFWriter();
+
+ // Open the file for writing. The file must not exist. Returns error if
+ // the operation cannot be completed or if nonsensical data is discovered
+ // in the essence descriptor.
+ Result_t OpenWrite(const char* filename, const WriterInfo&,
+ const TimedTextDescriptor&, ui32_t HeaderSize = 16384);
+
+ // Writes the Timed-Text Resource to the MXF file. The file must be UTF-8
+ // encoded. If the optional AESEncContext argument is present, the essence
+ // is encrypted prior to writing. Fails if the file is not open, is finalized,
+ // or an operating system error occurs.
+ // This method may only be called once, and it must be called before any
+ // call to WriteAncillaryResource(). RESULT_STATE will be returned if these
+ // conditions are not met.
+ Result_t WriteTimedTextResource(const std::string& XMLDoc, AESEncContext* = 0, HMACContext* = 0);
+
+ // Writes an Ancillary Resource to the MXF file. If the optional AESEncContext
+ // argument is present, the essence is encrypted prior to writing.
+ // Fails if the file is not open, is finalized, or an operating system
+ // error occurs. RESULT_STATE will be returned if the method is called before
+ // WriteTimedTextResource()
+ Result_t WriteAncillaryResource(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
+
+ // Closes the MXF file, writing the index and revised header.
+ Result_t Finalize();
+ };
+
+ //
+ class MXFReader
+ {
+ class h__Reader;
+ mem_ptr<h__Reader> m_Reader;
+ ASDCP_NO_COPY_CONSTRUCT(MXFReader);
+
+ public:
+ MXFReader();
+ virtual ~MXFReader();
+
+ // Open the file for reading. The file must exist. Returns error if the
+ // operation cannot be completed.
+ Result_t OpenRead(const char* filename) const;
+
+ // Returns RESULT_INIT if the file is not open.
+ Result_t Close() const;
+
+ // Fill a TimedTextDescriptor struct with the values from the file's header.
+ // Returns RESULT_INIT if the file is not open.
+ Result_t FillDescriptor(TimedTextDescriptor&) const;
+
+ // Fill a WriterInfo struct with the values from the file's header.
+ // Returns RESULT_INIT if the file is not open.
+ Result_t FillWriterInfo(WriterInfo&) const;
+
+ // Reads the complete Timed Text Resource into the given string. Fails if the resource
+ // is encrypted and AESDecContext is NULL (use the following method to retrieve the
+ // raw ciphertet block).
+ Result_t ReadTimedTextResource(std::string&, AESDecContext* = 0, HMACContext* = 0) const;
+
+ // Reads the complete Timed Text Resource from the MXF file. If the optional AESEncContext
+ // argument is present, the resource is decrypted after reading. If the MXF
+ // file is encrypted and the AESDecContext argument is NULL, the frame buffer
+ // will contain the ciphertext frame data. If the HMACContext argument is
+ // not NULL, the HMAC will be calculated (if the file supports it).
+ // Returns RESULT_INIT if the file is not open, failure if the frame number is
+ // out of range, or if optional decrypt or HAMC operations fail.
+ Result_t ReadTimedTextResource(FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
+
+ // Reads the timed-text resource having the given UUID from the MXF file. If the
+ // optional AESEncContext argument is present, the resource is decrypted after
+ // reading. If the MXF file is encrypted and the AESDecContext argument is NULL,
+ // the frame buffer will contain the ciphertext frame data. If the HMACContext
+ // argument is not NULL, the HMAC will be calculated (if the file supports it).
+ // Returns RESULT_INIT if the file is not open, failure if the frame number is
+ // out of range, or if optional decrypt or HAMC operations fail.
+ Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
+
+ // Print debugging information to stream
+ void DumpHeaderMetadata(FILE* = 0) const;
+ void DumpIndex(FILE* = 0) const;
+ };
+ } // namespace TimedText
+
+