/*
-Copyright (c) 2011-2013, Robert Scheler, Heiko Sparenberg Fraunhofer IIS,
+Copyright (c) 2011-2014, Robert Scheler, Heiko Sparenberg Fraunhofer IIS,
John Hurst
All rights reserved.
Result_t Lookup(ui32_t frame_num, ASDCP::MXF::IndexTableSegment::IndexEntry&) const;
};
-
// Returns size in bytes of a single sample of data described by ADesc
inline ui32_t CalcSampleSize(const ASDCP::MXF::WaveAudioDescriptor& d)
}
// Returns number of frames for data described by ADesc, given a duration in samples and an edit rate
- inline ui32_t CalcFramesFromDurationInSamples(const ui32_t durationInSamples, const ASDCP::MXF::WaveAudioDescriptor& d, const ASDCP::Rational& edit_rate)
+ inline ui32_t CalcFramesFromDurationInSamples(const ui32_t duration_samples, const ASDCP::MXF::WaveAudioDescriptor& d,
+ const ASDCP::Rational& edit_rate)
{
- return static_cast<ui32_t>(static_cast<ui64_t>(durationInSamples) *
- static_cast<ui64_t>(d.AudioSamplingRate.Denominator * edit_rate.Numerator) /
- static_cast<ui64_t>(d.AudioSamplingRate.Numerator * edit_rate.Denominator));
+ ui32_t spf = CalcSamplesPerFrame(d, edit_rate);
+ ui32_t frames = duration_samples / spf;
+
+ if ( duration_samples % spf != 0 )
+ {
+ ++frames;
+ }
+
+ return frames;
}
} // namespace MXF
+
+ // IMF App 2 edit rates not already exposed in namespace ASDCP
+ const ASDCP::Rational EditRate_29_97 = ASDCP::Rational(30000, 1001);
+ const ASDCP::Rational EditRate_59_94 = ASDCP::Rational(60000, 1001);
+
//---------------------------------------------------------------------------------
// Accessors in the MXFReader and MXFWriter classes below return these types to
// provide direct access to MXF metadata structures declared in MXF.h and Metadata.h
};
namespace JP2K
- {
+ {
//
class MXFWriter
{
ASDCP::MXF::InterchangeObject_list_t& essence_sub_descriptor_list,
const ASDCP::Rational& edit_rate, const ui32_t& header_size = 16384,
const IndexStrategy_t& strategy = IS_FOLLOW, const ui32_t& partition_space = 10);
-
+
// Writes a frame of essence 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
// the reader to signal the number of samples to be read by each call to ReadFrame();
//
- class MXFWriter
+ class MXFWriter
{
class h__Writer;
ASDCP::mem_ptr<h__Writer> m_Writer;
};
} // namespace PCM
+ //---------------------------------------------------------------------------------
+ //
+ namespace TimedText
+ {
+ using ASDCP::TimedText::TimedTextDescriptor;
+ using ASDCP::TimedText::TimedTextResourceDescriptor;
+ using ASDCP::TimedText::ResourceList_t;
+
+ //
+ class Type5UUIDFilenameResolver : public ASDCP::TimedText::IResourceResolver
+ {
+ typedef std::map<Kumu::UUID, std::string> ResourceMap;
+
+ ResourceMap m_ResourceMap;
+ std::string m_Dirname;
+ KM_NO_COPY_CONSTRUCT(Type5UUIDFilenameResolver);
+
+ public:
+ Type5UUIDFilenameResolver();
+ virtual ~Type5UUIDFilenameResolver();
+ Result_t OpenRead(const std::string& dirname);
+ Result_t ResolveRID(const byte_t* uuid, ASDCP::TimedText::FrameBuffer& FrameBuf) const;
+ };
+
+ //
+ class ST2052_TextParser
+ {
+ class h__TextParser;
+ ASDCP::mem_ptr<h__TextParser> m_Parser;
+ ASDCP_NO_COPY_CONSTRUCT(ST2052_TextParser);
+
+ public:
+ ST2052_TextParser();
+ virtual ~ST2052_TextParser();
+
+ // Opens an XML file for reading, parses data to provide a complete
+ // set of stream metadata for the MXFWriter below.
+ Result_t OpenRead(const std::string& filename) const;
+
+ // Parse an XML string
+ Result_t OpenRead(const std::string& xml_doc, const std::string& 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 FillTimedTextDescriptor(ASDCP::TimedText::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 Kumu::UUID&, ASDCP::TimedText::FrameBuffer&,
+ const ASDCP::TimedText::IResourceResolver* Resolver = 0) const;
+ };
+
+ //
+ class MXFWriter
+ {
+ class h__Writer;
+ ASDCP::mem_ptr<h__Writer> m_Writer;
+ ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
+
+ public:
+ MXFWriter();
+ virtual ~MXFWriter();
+
+ // Warning: direct manipulation of MXF structures can interfere
+ // with the normal operation of the wrapper. Caveat emptor!
+ virtual ASDCP::MXF::OP1aHeader& OP1aHeader();
+ virtual ASDCP::MXF::RIP& RIP();
+
+ // 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 std::string& filename, const ASDCP::WriterInfo&,
+ const ASDCP::TimedText::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, ASDCP::AESEncContext* = 0, ASDCP::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 ASDCP::TimedText::FrameBuffer&, ASDCP::AESEncContext* = 0, ASDCP::HMACContext* = 0);
+
+ // Closes the MXF file, writing the index and revised header.
+ Result_t Finalize();
+ };
+
+ //
+ class MXFReader
+ {
+ class h__Reader;
+ ASDCP::mem_ptr<h__Reader> m_Reader;
+ ASDCP_NO_COPY_CONSTRUCT(MXFReader);
+
+ public:
+ MXFReader();
+ virtual ~MXFReader();
+
+ // Warning: direct manipulation of MXF structures can interfere
+ // with the normal operation of the wrapper. Caveat emptor!
+ virtual ASDCP::MXF::OP1aHeader& OP1aHeader();
+ virtual AS_02::MXF::AS02IndexReader& AS02IndexReader();
+ virtual ASDCP::MXF::RIP& RIP();
+
+ // Open the file for reading. The file must exist. Returns error if the
+ // operation cannot be completed.
+ Result_t OpenRead(const std::string& 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 FillTimedTextDescriptor(ASDCP::TimedText::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(ASDCP::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&, ASDCP::AESDecContext* = 0, ASDCP::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(ASDCP::TimedText::FrameBuffer&, ASDCP::AESDecContext* = 0, ASDCP::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 Kumu::UUID&, ASDCP::TimedText::FrameBuffer&, ASDCP::AESDecContext* = 0, ASDCP::HMACContext* = 0) const;
+
+ // Print debugging information to stream
+ void DumpHeaderMetadata(FILE* = 0) const;
+ void DumpIndex(FILE* = 0) const;
+ };
+ } // namespace TimedText
} // namespace AS_02
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