2 Copyright (c) 2003-2014, John Hurst
5 Redistribution and use in source and binary forms, with or without
6 modification, are permitted provided that the following conditions
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9 notice, this list of conditions and the following disclaimer.
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28 \version $Id: AS_DCP.h,v 1.52 2015/04/21 03:55:31 jhurst Exp $
29 \brief AS-DCP library, public interface
31 The asdcplib library is a set of file access objects that offer simplified
32 access to files conforming to the standards published by the SMPTE
33 D-Cinema Technology Committee 21DC. The file format, labeled AS-DCP,
34 is described in a series of documents which includes but may not
37 o SMPTE ST 429-2:2011 DCP Operational Constraints
38 o SMPTE ST 429-3:2006 Sound and Picture Track File
39 o SMPTE ST 429-4:2006 MXF JPEG 2000 Application
40 o SMPTE ST 429-5:2009 Timed Text Track File
41 o SMPTE ST 429-6:2006 MXF Track File Essence Encryption
42 o SMPTE ST 429-10:2008 Stereoscopic Picture Track File
43 o SMPTE ST 429-14:2008 Aux Data Track File
44 o SMPTE ST 330:2004 - UMID
45 o SMPTE ST 336:2001 - KLV
46 o SMPTE ST 377:2004 - MXF (old version, required)
47 o SMPTE ST 377-1:2011 - MXF
48 o SMPTE ST 377-4:2012 - MXF Multichannel Audio Labeling Framework
49 o SMPTE ST 390:2011 - MXF OP-Atom
50 o SMPTE ST 379-1:2009 - MXF Generic Container (GC)
51 o SMPTE ST 381-1:2005 - MPEG2 picture in GC
52 o SMPTE ST 422:2006 - JPEG 2000 picture in GC
53 o SMPTE ST 382:2007 - WAV/PCM sound in GC
54 o IETF RFC 2104 - HMAC/SHA1
55 o NIST FIPS 197 - AES (Rijndael) (via OpenSSL)
57 o MXF Interop Track File Specification
58 o MXF Interop Track File Essence Encryption Specification
59 o MXF Interop Operational Constraints Specification
60 - Note: the MXF Interop documents are not formally published.
61 Contact the asdcplib support address to get copies.
63 The following use cases are supported by the library:
65 o Write essence to a plaintext or ciphertext AS-DCP file:
66 o Read essence from a plaintext or ciphertext AS-DCP file:
67 MPEG2 Video Elementary Stream
69 JPEG 2000 stereoscopic codestream pairs
71 SMPTE 429-7 Timed Text XML with font and image resources
72 Aux Data (frame-wrapped synchronous blob)
73 Proposed Dolby (TM) Atmos track file
75 o Read header metadata from an AS-DCP file
77 This project depends upon the following libraries:
78 - OpenSSL http://www.openssl.org/
79 - Expat http://expat.sourceforge.net/ or
80 Xerces-C http://xerces.apache.org/xerces-c/
81 An XML library is not needed if you don't need support for SMPTE ST 429-5:2009.
88 #include <KM_fileio.h>
97 //--------------------------------------------------------------------------------
98 // common integer types
99 // supply your own by defining ASDCP_NO_BASE_TYPES
101 #ifndef ASDCP_NO_BASE_TYPES
102 typedef unsigned char byte_t;
104 typedef unsigned char ui8_t;
106 typedef unsigned short ui16_t;
108 typedef unsigned int ui32_t;
112 //--------------------------------------------------------------------------------
113 // convenience macros
115 // Convenience macros for managing return values in predicates
116 #define ASDCP_SUCCESS(v) (((v) < 0) ? 0 : 1)
117 #define ASDCP_FAILURE(v) (((v) < 0) ? 1 : 0)
120 // Returns RESULT_PTR if the given argument is NULL.
121 // See Result_t below for an explanation of RESULT_* symbols.
122 #define ASDCP_TEST_NULL(p) \
124 return ASDCP::RESULT_PTR; \
127 // Returns RESULT_PTR if the given argument is NULL. See Result_t
128 // below for an explanation of RESULT_* symbols. It then assumes
129 // that the argument is a pointer to a string and returns
130 // RESULT_NULL_STR if the first character is '\0'.
132 #define ASDCP_TEST_NULL_STR(p) \
133 ASDCP_TEST_NULL(p); \
134 if ( (p)[0] == '\0' ) { \
135 return ASDCP::RESULT_NULL_STR; \
138 // Produces copy constructor boilerplate. Allows convenient private
139 // declatarion of copy constructors to prevent the compiler from
140 // silently manufacturing default methods.
141 #define ASDCP_NO_COPY_CONSTRUCT(T) \
143 T& operator=(const T&)
145 //--------------------------------------------------------------------------------
146 // All library components are defined in the namespace ASDCP
150 // The version number declaration and explanation have moved to ../configure.ac
151 const char* Version();
153 // UUIDs are passed around as strings of UUIDlen bytes
154 const ui32_t UUIDlen = 16;
156 // Encryption keys are passed around as strings of KeyLen bytes
157 const ui32_t KeyLen = 16;
159 //---------------------------------------------------------------------------------
162 using Kumu::Result_t;
164 using Kumu::RESULT_FALSE;
165 using Kumu::RESULT_OK;
166 using Kumu::RESULT_FAIL;
167 using Kumu::RESULT_PTR;
168 using Kumu::RESULT_NULL_STR;
169 using Kumu::RESULT_ALLOC;
170 using Kumu::RESULT_PARAM;
171 using Kumu::RESULT_SMALLBUF;
172 using Kumu::RESULT_INIT;
173 using Kumu::RESULT_NOT_FOUND;
174 using Kumu::RESULT_NO_PERM;
175 using Kumu::RESULT_FILEOPEN;
176 using Kumu::RESULT_BADSEEK;
177 using Kumu::RESULT_READFAIL;
178 using Kumu::RESULT_WRITEFAIL;
179 using Kumu::RESULT_STATE;
180 using Kumu::RESULT_ENDOFFILE;
181 using Kumu::RESULT_CONFIG;
183 KM_DECLARE_RESULT(FORMAT, -101, "The file format is not proper OP-Atom/AS-DCP.");
184 KM_DECLARE_RESULT(RAW_ESS, -102, "Unknown raw essence file type.");
185 KM_DECLARE_RESULT(RAW_FORMAT, -103, "Raw essence format invalid.");
186 KM_DECLARE_RESULT(RANGE, -104, "Frame number out of range.");
187 KM_DECLARE_RESULT(CRYPT_CTX, -105, "AESEncContext required when writing to encrypted file.");
188 KM_DECLARE_RESULT(LARGE_PTO, -106, "Plaintext offset exceeds frame buffer size.");
189 KM_DECLARE_RESULT(CAPEXTMEM, -107, "Cannot resize externally allocated memory.");
190 KM_DECLARE_RESULT(CHECKFAIL, -108, "The check value did not decrypt correctly.");
191 KM_DECLARE_RESULT(HMACFAIL, -109, "HMAC authentication failure.");
192 KM_DECLARE_RESULT(HMAC_CTX, -110, "HMAC context required.");
193 KM_DECLARE_RESULT(CRYPT_INIT, -111, "Error initializing block cipher context.");
194 KM_DECLARE_RESULT(EMPTY_FB, -112, "Empty frame buffer.");
195 KM_DECLARE_RESULT(KLV_CODING, -113, "KLV coding error.");
196 KM_DECLARE_RESULT(SPHASE, -114, "Stereoscopic phase mismatch.");
197 KM_DECLARE_RESULT(SFORMAT, -115, "Rate mismatch, file may contain stereoscopic essence.");
199 //---------------------------------------------------------------------------------
200 // file identification
202 // The file accessors in this library implement a bounded set of essence types.
203 // This list will be expanded when support for new types is added to the library.
205 ESS_UNKNOWN, // the file is not a supported AS-DCP of AS-02 essence container
208 ESS_MPEG2_VES, // the file contains an MPEG-2 video elementary stream
210 // d-cinema essence types
211 ESS_JPEG_2000, // the file contains one or more JPEG 2000 codestreams
212 ESS_PCM_24b_48k, // the file contains one or more PCM audio pairs
213 ESS_PCM_24b_96k, // the file contains one or more PCM audio pairs
214 ESS_TIMED_TEXT, // the file contains an XML timed text document and one or more resources
215 ESS_JPEG_2000_S, // the file contains one or more JPEG 2000 codestream pairs (stereoscopic)
216 ESS_DCDATA_UNKNOWN, // the file contains one or more D-Cinema Data bytestreams
217 ESS_DCDATA_DOLBY_ATMOS, // the file contains one or more DolbyATMOS bytestreams
220 ESS_AS02_JPEG_2000, // the file contains one or more JPEG 2000 codestreams
221 ESS_AS02_PCM_24b_48k, // the file contains one or more PCM audio pairs, clip wrapped
222 ESS_AS02_PCM_24b_96k, // the file contains one or more PCM audio pairs, clip wrapped
223 ESS_AS02_TIMED_TEXT, // the file contains a TTML document and zero or more resources
228 // Determine the type of essence contained in the given MXF file. RESULT_OK
229 // is returned if the file is successfully opened and contains a valid MXF
230 // stream. If there is an error, the result code will indicate the reason.
231 Result_t EssenceType(const std::string& filename, EssenceType_t& type);
233 // Determine the type of essence contained in the given raw file. RESULT_OK
234 // is returned if the file is successfully opened and contains a known
235 // stream type. If there is an error, the result code will indicate the reason.
236 Result_t RawEssenceType(const std::string& filename, EssenceType_t& type);
239 //---------------------------------------------------------------------------------
242 // A simple container for rational numbers.
249 Rational() : Numerator(0), Denominator(0) {}
250 Rational(i32_t n, i32_t d) : Numerator(n), Denominator(d) {}
252 inline double Quotient() const {
253 return (double)Numerator / (double)Denominator;
256 inline bool operator==(const Rational& rhs) const {
257 return ( rhs.Numerator == Numerator && rhs.Denominator == Denominator );
260 inline bool operator!=(const Rational& rhs) const {
261 return ( rhs.Numerator != Numerator || rhs.Denominator != Denominator );
264 inline bool operator<(const Rational& rhs) {
265 if ( Numerator < rhs.Numerator ) return true;
266 if ( Numerator == rhs.Numerator && Denominator < rhs.Denominator ) return true;
270 inline bool operator>(const Rational& rhs) {
271 if ( Numerator > rhs.Numerator ) return true;
272 if ( Numerator == rhs.Numerator && Denominator > rhs.Denominator ) return true;
277 // Encodes a rational number as a string having a single delimiter character between
278 // numerator and denominator. Retuns the buffer pointer to allow convenient in-line use.
279 const char* EncodeRational(const Rational&, char* str_buf, ui32_t buf_len, char delimiter = ' ');
281 // Decodes a rational number havng a single non-digit delimiter character between
282 // the numerator and denominator. Returns false if the string does not contain
283 // the expected syntax.
284 bool DecodeRational(const char* str_rat, Rational&);
287 // common edit rates, use these instead of hard coded constants
288 const Rational EditRate_24 = Rational(24,1);
289 const Rational EditRate_23_98 = Rational(24000,1001); // Not a DCI-compliant value!
290 const Rational EditRate_48 = Rational(48,1);
291 const Rational SampleRate_48k = Rational(48000,1);
292 const Rational SampleRate_96k = Rational(96000,1);
294 // Additional frame rates, see ST 428-11, ST 429-13
295 // These rates are new and not supported by all systems. Do not assume that
296 // a package made using one of these rates will work just anywhere!
297 const Rational EditRate_25 = Rational(25,1);
298 const Rational EditRate_30 = Rational(30,1);
299 const Rational EditRate_50 = Rational(50,1);
300 const Rational EditRate_60 = Rational(60,1);
301 const Rational EditRate_96 = Rational(96,1);
302 const Rational EditRate_100 = Rational(100,1);
303 const Rational EditRate_120 = Rational(120,1);
305 // Archival frame rates, see ST 428-21
306 // These rates are new and not supported by all systems. Do not assume that
307 // a package made using one of these rates will work just anywhere!
308 const Rational EditRate_16 = Rational(16,1);
309 const Rational EditRate_18 = Rational(200,11); // 18.182
310 const Rational EditRate_20 = Rational(20,1);
311 const Rational EditRate_22 = Rational(240,11); // 21.818
314 // Non-reference counting container for internal member objects.
315 // Please do not use this class for any other purpose.
319 T* m_p; // the thing we point to
323 mem_ptr() : m_p(0) {}
324 mem_ptr(T* p) : m_p(p) {}
325 ~mem_ptr() { delete m_p; }
327 inline T& operator*() const { return *m_p; }
328 inline T* operator->() const { return m_p; }
329 inline operator T*()const { return m_p; }
330 inline const mem_ptr<T>& operator=(T* p) { set(p); return *this; }
331 inline T* set(T* p) { delete m_p; m_p = p; return m_p; }
332 inline T* get() const { return m_p; }
333 inline void release() { m_p = 0; }
334 inline bool empty() const { return m_p == 0; }
338 //---------------------------------------------------------------------------------
339 // WriterInfo class - encapsulates writer identification details used for
340 // OpenWrite() calls. Replace these values at runtime to identify your product.
342 // MXF files use SMPTE Universal Labels to identify data items. The set of Labels
343 // in a file is determined by the MXF Operational Pattern and any constraining
344 // documentation. There are currently two flavors of AS-DCP file in use: MXF Interop
345 // (AKA JPEG Interop) and SMPTE. The two differ in the values of three labels:
348 // Interop : 06 0e 2b 34 04 01 01 01 0d 01 02 01 10 00 00 00
349 // SMPTE : 06 0e 2b 34 04 01 01 02 0d 01 02 01 10 00 00 00
352 // Interop : 06 0e 2b 34 02 04 01 07 0d 01 03 01 02 7e 01 00
353 // SMPTE : 06 0e 2b 34 02 04 01 01 0d 01 03 01 02 7e 01 00
355 // GenericDescriptor/SubDescriptors:
356 // Interop : 06 0e 2b 34 01 01 01 02 06 01 01 04 06 10 00 00
357 // SMPTE : 06 0e 2b 34 01 01 01 09 06 01 01 04 06 10 00 00
359 // asdcplib will read any (otherwise valid) file which has any combination of the
360 // above values. When writing files, MXF Interop labels are used by default. To
361 // write a file containing SMPTE labels, replace the default label set value in
362 // the WriterInfo before calling OpenWrite()
376 byte_t ProductUUID[UUIDlen];
377 byte_t AssetUUID[UUIDlen];
378 byte_t ContextID[UUIDlen];
379 byte_t CryptographicKeyID[UUIDlen];
380 bool EncryptedEssence; // true if essence data is (or is going to be) encrypted
381 bool UsesHMAC; // true if HMAC exists or is to be calculated
382 std::string ProductVersion;
383 std::string CompanyName;
384 std::string ProductName;
385 LabelSet_t LabelSetType;
387 WriterInfo() : EncryptedEssence(false), UsesHMAC(false), LabelSetType(LS_MXF_INTEROP)
389 static byte_t default_ProductUUID_Data[UUIDlen] = {
390 0x43, 0x05, 0x9a, 0x1d, 0x04, 0x32, 0x41, 0x01,
391 0xb8, 0x3f, 0x73, 0x68, 0x15, 0xac, 0xf3, 0x1d };
393 memcpy(ProductUUID, default_ProductUUID_Data, UUIDlen);
394 memset(AssetUUID, 0, UUIDlen);
395 memset(ContextID, 0, UUIDlen);
396 memset(CryptographicKeyID, 0, UUIDlen);
398 ProductVersion = "Unreleased ";
399 ProductVersion += Version();
401 ProductName = "asdcplib";
405 // Print WriterInfo to std::ostream
406 std::ostream& operator << (std::ostream& strm, const WriterInfo& winfo);
407 // Print WriterInfo to stream, stderr by default.
408 void WriterInfoDump(const WriterInfo&, FILE* = 0);
410 //---------------------------------------------------------------------------------
411 // cryptographic support
413 // The following classes define interfaces to Rijndael contexts having the following properties:
415 // o CBC mode with 16 byte block size
416 const ui32_t CBC_KEY_SIZE = 16;
417 const ui32_t CBC_BLOCK_SIZE = 16;
418 const ui32_t HMAC_SIZE = 20;
424 mem_ptr<h__AESContext> m_Context;
425 ASDCP_NO_COPY_CONSTRUCT(AESEncContext);
431 // Initializes Rijndael CBC encryption context.
432 // Returns error if the key argument is NULL.
433 Result_t InitKey(const byte_t* key);
435 // Initializes 16 byte CBC Initialization Vector. This operation may be performed
436 // any number of times for a given key.
437 // Returns error if the i_vec argument is NULL.
438 Result_t SetIVec(const byte_t* i_vec);
439 Result_t GetIVec(byte_t* i_vec) const;
441 // Encrypt a block of data. The block size must be a multiple of CBC_BLOCK_SIZE.
442 // Returns error if either argument is NULL.
443 Result_t EncryptBlock(const byte_t* pt_buf, byte_t* ct_buf, ui32_t block_size);
450 mem_ptr<h__AESContext> m_Context;
451 ASDCP_NO_COPY_CONSTRUCT(AESDecContext);
457 // Initializes Rijndael CBC decryption context.
458 // Returns error if the key argument is NULL.
459 Result_t InitKey(const byte_t* key);
461 // Initializes 16 byte CBC Initialization Vector. This operation may be performed
462 // any number of times for a given key.
463 // Returns error if the i_vec argument is NULL.
464 Result_t SetIVec(const byte_t* i_vec);
466 // Decrypt a block of data. The block size must be a multiple of CBC_BLOCK_SIZE.
467 // Returns error if either argument is NULL.
468 Result_t DecryptBlock(const byte_t* ct_buf, byte_t* pt_buf, ui32_t block_size);
474 class h__HMACContext;
475 mem_ptr<h__HMACContext> m_Context;
476 ASDCP_NO_COPY_CONSTRUCT(HMACContext);
482 // Initializes HMAC context. The key argument must point to a binary
483 // key that is CBC_KEY_SIZE bytes in length. Returns error if the key
485 Result_t InitKey(const byte_t* key, LabelSet_t);
487 // Reset internal state, allows repeated cycles of Update -> Finalize
490 // Add data to the digest. Returns error if the key argument is NULL or
491 // if the digest has been finalized.
492 Result_t Update(const byte_t* buf, ui32_t buf_len);
494 // Finalize digest. Returns error if the digest has already been finalized.
497 // Writes HMAC value to given buffer. buf must point to a writable area of
498 // memory that is at least HMAC_SIZE bytes in length. Returns error if the
499 // buf argument is NULL or if the digest has not been finalized.
500 Result_t GetHMACValue(byte_t* buf) const;
502 // Tests the given value against the finalized value in the object. buf must
503 // point to a readable area of memory that is at least HMAC_SIZE bytes in length.
504 // Returns error if the buf argument is NULL or if the values do ot match.
505 Result_t TestHMACValue(const byte_t* buf) const;
508 //---------------------------------------------------------------------------------
509 // frame buffer base class
511 // The supported essence types are stored using per-frame KLV packetization. The
512 // following class implements essence-neutral functionality for managing a buffer
513 // containing a frame of essence.
517 ASDCP_NO_COPY_CONSTRUCT(FrameBuffer);
520 byte_t* m_Data; // pointer to memory area containing frame data
521 ui32_t m_Capacity; // size of memory area pointed to by m_Data
522 bool m_OwnMem; // if false, m_Data points to externally allocated memory
523 ui32_t m_Size; // size of frame data in memory area pointed to by m_Data
524 ui32_t m_FrameNumber; // delivery-order frame number
526 // It is possible to read raw ciphertext from an encrypted AS-DCP file.
527 // After reading an encrypted AS-DCP file in raw mode, the frame buffer will
528 // contain the encrypted source value portion of the Encrypted Triplet, followed
529 // by the integrity pack, if it exists.
530 // The buffer will begin with the IV and CheckValue, followed by encrypted essence
531 // and optional integrity pack
532 // The SourceLength and PlaintextOffset values from the packet will be held in the
533 // following variables:
534 ui32_t m_SourceLength; // plaintext length (delivered plaintext+decrypted ciphertext)
535 ui32_t m_PlaintextOffset; // offset to first byte of ciphertext
539 virtual ~FrameBuffer();
541 // Instructs the object to use an externally allocated buffer. The external
542 // buffer will not be cleaned up by the frame buffer when it exits.
543 // Call with (0,0) to revert to internally allocated buffer.
544 // Returns error if the buf_addr argument is NULL and buf_size is non-zero.
545 Result_t SetData(byte_t* buf_addr, ui32_t buf_size);
547 // Sets the size of the internally allocate buffer. Returns RESULT_CAPEXTMEM
548 // if the object is using an externally allocated buffer via SetData();
549 // Resets content size to zero.
550 Result_t Capacity(ui32_t cap);
552 // returns the size of the buffer
553 inline ui32_t Capacity() const { return m_Capacity; }
555 // returns a const pointer to the essence data
556 inline const byte_t* RoData() const { return m_Data; }
558 // returns a non-const pointer to the essence data
559 inline byte_t* Data() { return m_Data; }
561 // set the size of the buffer's contents
562 inline ui32_t Size(ui32_t size) { return m_Size = size; }
564 // returns the size of the buffer's contents
565 inline ui32_t Size() const { return m_Size; }
567 // Sets the absolute frame number of this frame in the file in delivery order.
568 inline void FrameNumber(ui32_t num) { m_FrameNumber = num; }
570 // Returns the absolute frame number of this frame in the file in delivery order.
571 inline ui32_t FrameNumber() const { return m_FrameNumber; }
573 // Sets the length of the plaintext essence data
574 inline void SourceLength(ui32_t len) { m_SourceLength = len; }
576 // When this value is 0 (zero), the buffer contains only plaintext. When it is
577 // non-zero, the buffer contains raw ciphertext and the return value is the length
578 // of the original plaintext.
579 inline ui32_t SourceLength() const { return m_SourceLength; }
581 // Sets the offset into the buffer at which encrypted data begins
582 inline void PlaintextOffset(ui32_t ofst) { m_PlaintextOffset = ofst; }
584 // Returns offset into buffer of first byte of ciphertext.
585 inline ui32_t PlaintextOffset() const { return m_PlaintextOffset; }
588 //---------------------------------------------------------------------------------
589 // Accessors in the MXFReader and MXFWriter classes below return these types to
590 // provide direct access to MXF metadata structures declared in MXF.h and Metadata.h
593 // #include<Metadata.h> to use these
595 class OPAtomIndexFooter;
599 //---------------------------------------------------------------------------------
600 // MPEG2 video elementary stream support
605 // MPEG picture coding type
607 FRAME_U = 0x00, // Unknown
608 FRAME_I = 0x01, // I-Frame
609 FRAME_P = 0x02, // P-Frame
610 FRAME_B = 0x03 // B-Frame
613 // convert FrameType_t to char
614 inline char FrameTypeChar(FrameType_t type)
618 case FRAME_I: return 'I';
619 case FRAME_B: return 'B';
620 case FRAME_P: return 'P';
625 // Structure represents the metadata elements in the file header's
626 // MPEG2VideoDescriptor object.
627 struct VideoDescriptor
629 Rational EditRate; //
631 Rational SampleRate; //
632 ui8_t FrameLayout; //
633 ui32_t StoredWidth; //
634 ui32_t StoredHeight; //
635 Rational AspectRatio; //
636 ui32_t ComponentDepth; //
637 ui32_t HorizontalSubsampling; //
638 ui32_t VerticalSubsampling; //
639 ui8_t ColorSiting; //
640 ui8_t CodedContentType; //
643 ui8_t ProfileAndLevel; //
644 ui32_t ContainerDuration; //
647 // Print VideoDescriptor to std::ostream
648 std::ostream& operator << (std::ostream& strm, const VideoDescriptor& vdesc);
649 // Print VideoDescriptor to stream, stderr by default.
650 void VideoDescriptorDump(const VideoDescriptor&, FILE* = 0);
652 // A container for MPEG frame data.
653 class FrameBuffer : public ASDCP::FrameBuffer
655 ASDCP_NO_COPY_CONSTRUCT(FrameBuffer); // TODO: should have copy construct
658 FrameType_t m_FrameType;
659 ui8_t m_TemporalOffset;
665 m_FrameType(FRAME_U), m_TemporalOffset(0),
666 m_ClosedGOP(false), m_GOPStart(false) {}
668 FrameBuffer(ui32_t size) :
669 m_FrameType(FRAME_U), m_TemporalOffset(0),
670 m_ClosedGOP(false), m_GOPStart(false)
675 virtual ~FrameBuffer() {}
677 // Sets the MPEG frame type of the picture data in the frame buffer.
678 inline void FrameType(FrameType_t type) { m_FrameType = type; }
680 // Returns the MPEG frame type of the picture data in the frame buffer.
681 inline FrameType_t FrameType() const { return m_FrameType; }
683 // Sets the MPEG temporal offset of the picture data in the frame buffer.
684 inline void TemporalOffset(ui8_t offset) { m_TemporalOffset = offset; }
686 // Returns the MPEG temporal offset of the picture data in the frame buffer.
687 inline ui8_t TemporalOffset() const { return m_TemporalOffset; }
689 // Sets the MPEG GOP 'start' attribute for the frame buffer.
690 inline void GOPStart(bool start) { m_GOPStart = start; }
692 // True if the frame in the buffer is the first in the GOP (in transport order)
693 inline bool GOPStart() const { return m_GOPStart; }
695 // Sets the MPEG GOP 'closed' attribute for the frame buffer.
696 inline void ClosedGOP(bool closed) { m_ClosedGOP = closed; }
698 // Returns true if the frame in the buffer is from a closed GOP, false if
699 // the frame is from an open GOP. Always returns false unless GOPStart()
701 inline bool ClosedGOP() const { return m_ClosedGOP; }
703 // Print object state to stream, include n bytes of frame data if indicated.
704 // Default stream is stderr.
705 void Dump(FILE* = 0, ui32_t dump_len = 0) const;
709 // An object which opens and reads an MPEG2 Video Elementary Stream file. The call to
710 // OpenRead() reads metadata from the file and populates an internal VideoDescriptor object.
711 // Each subsequent call to ReadFrame() reads exactly one frame from the stream into the
712 // given FrameBuffer object.
716 mem_ptr<h__Parser> m_Parser;
717 ASDCP_NO_COPY_CONSTRUCT(Parser);
723 // Opens the stream for reading, parses enough data to provide a complete
724 // set of stream metadata for the MXFWriter below.
725 Result_t OpenRead(const std::string& filename) const;
727 // Fill a VideoDescriptor struct with the values from the file's header.
728 // Returns RESULT_INIT if the file is not open.
729 Result_t FillVideoDescriptor(VideoDescriptor&) const;
731 // Rewind the stream to the beginning.
732 Result_t Reset() const;
734 // Reads the next sequential frame in the input file and places it in the
735 // frame buffer. Fails if the buffer is too small or the stream is empty.
736 // The frame buffer's PlaintextOffset parameter will be set to the first
737 // data byte of the first slice. Set this value to zero if you want
738 // encrypted headers.
739 Result_t ReadFrame(FrameBuffer&) const;
742 // A class which creates and writes MPEG frame data to an AS-DCP format MXF file.
743 // Not yet implemented
747 mem_ptr<h__Writer> m_Writer;
748 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
752 virtual ~MXFWriter();
754 // Warning: direct manipulation of MXF structures can interfere
755 // with the normal operation of the wrapper. Caveat emptor!
756 virtual MXF::OP1aHeader& OP1aHeader();
757 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
758 virtual MXF::RIP& RIP();
760 // Open the file for writing. The file must not exist. Returns error if
761 // the operation cannot be completed or if nonsensical data is discovered
762 // in the essence descriptor.
763 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
764 const VideoDescriptor&, ui32_t HeaderSize = 16384);
766 // Writes a frame of essence to the MXF file. If the optional AESEncContext
767 // argument is present, the essence is encrypted prior to writing.
768 // Fails if the file is not open, is finalized, or an operating system
770 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
772 // Closes the MXF file, writing the index and revised header.
776 // A class which reads MPEG frame data from an AS-DCP format MXF file.
780 mem_ptr<h__Reader> m_Reader;
781 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
785 virtual ~MXFReader();
787 // Warning: direct manipulation of MXF structures can interfere
788 // with the normal operation of the wrapper. Caveat emptor!
789 virtual MXF::OP1aHeader& OP1aHeader();
790 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
791 virtual MXF::RIP& RIP();
793 // Open the file for reading. The file must exist. Returns error if the
794 // operation cannot be completed.
795 Result_t OpenRead(const std::string& filename) const;
797 // Returns RESULT_INIT if the file is not open.
798 Result_t Close() const;
800 // Fill a VideoDescriptor struct with the values from the file's header.
801 // Returns RESULT_INIT if the file is not open.
802 Result_t FillVideoDescriptor(VideoDescriptor&) const;
804 // Fill a WriterInfo struct with the values from the file's header.
805 // Returns RESULT_INIT if the file is not open.
806 Result_t FillWriterInfo(WriterInfo&) const;
808 // Reads a frame of essence from the MXF file. If the optional AESEncContext
809 // argument is present, the essence is decrypted after reading. If the MXF
810 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
811 // will contain the ciphertext frame data. If the HMACContext argument is
812 // not NULL, the HMAC will be calculated (if the file supports it).
813 // Returns RESULT_INIT if the file is not open, failure if the frame number is
814 // out of range, or if optional decrypt or HAMC operations fail.
815 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
817 // Using the index table read from the footer partition, lookup the frame number
818 // and return the offset into the file at which to read that frame of essence.
819 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
821 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
823 // Calculates the first frame in transport order of the GOP in which the requested
824 // frame is located. Calls ReadFrame() to fetch the frame at the calculated position.
825 // Returns RESULT_INIT if the file is not open.
826 Result_t ReadFrameGOPStart(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
828 // Calculates the first frame in transport order of the GOP in which the requested
829 // frame is located. Sets key_frame_number to the number of the frame at the calculated position.
830 // Returns RESULT_INIT if the file is not open.
831 Result_t FindFrameGOPStart(ui32_t frame_number, ui32_t& key_frame_number) const;
833 // Returns the type of the frame at the given position.
834 // Returns RESULT_INIT if the file is not open or RESULT_RANGE if the index is out of range.
835 Result_t FrameType(ui32_t frame_number, FrameType_t&) const;
837 // Print debugging information to stream
838 void DumpHeaderMetadata(FILE* = 0) const;
839 void DumpIndex(FILE* = 0) const;
843 //---------------------------------------------------------------------------------
850 // The default value of the ChannelFormat element of the AudioDescriptor struct
851 // is CF_NONE. If the value is set to one of the other ChannelFormat_t enum
852 // values, the file's Wave Audio Descriptor will contain a Channel Assignment
855 // The channel format should be one of (CF_CFG_1, CF_CFG_2, or CF_CFG_3) for
856 // SMPTE 429-2 files. It should normally be CF_NONE for JPEG Interop files, but
857 // the 429-2 may also be used.
859 enum ChannelFormat_t {
861 CF_CFG_1, // 5.1 with optional HI/VI
862 CF_CFG_2, // 6.1 (5.1 + center surround) with optional HI/VI
863 CF_CFG_3, // 7.1 (SDDS) with optional HI/VI
864 CF_CFG_4, // Wild Track Format
865 CF_CFG_5, // 7.1 DS with optional HI/VI
866 CF_CFG_6, // ST 377-4 (MCA) labels (see also ASDCP::MXF::decode_mca_string)
870 struct AudioDescriptor
872 Rational EditRate; // rate of frame wrapping
873 Rational AudioSamplingRate; // rate of audio sample
875 ui32_t ChannelCount; // number of channels
876 ui32_t QuantizationBits; // number of bits per single-channel sample
877 ui32_t BlockAlign; // number of bytes ber sample, all channels
879 ui32_t LinkedTrackID; //
880 ui32_t ContainerDuration; // number of frames
881 ChannelFormat_t ChannelFormat; // audio channel arrangement
884 // Print AudioDescriptor to std::ostream
885 std::ostream& operator << (std::ostream& strm, const AudioDescriptor& adesc);
886 // Print debugging information to stream (stderr default)
887 void AudioDescriptorDump(const AudioDescriptor&, FILE* = 0);
889 // Returns size in bytes of a single sample of data described by ADesc
890 inline ui32_t CalcSampleSize(const AudioDescriptor& ADesc)
892 return (ADesc.QuantizationBits / 8) * ADesc.ChannelCount;
895 // Returns number of samples per frame of data described by ADesc
896 inline ui32_t CalcSamplesPerFrame(const AudioDescriptor& ADesc)
898 double tmpd = ADesc.AudioSamplingRate.Quotient() / ADesc.EditRate.Quotient();
899 return (ui32_t)ceil(tmpd);
902 // Returns the size in bytes of a frame of data described by ADesc
903 inline ui32_t CalcFrameBufferSize(const AudioDescriptor& ADesc)
905 return CalcSampleSize(ADesc) * CalcSamplesPerFrame(ADesc);
909 class FrameBuffer : public ASDCP::FrameBuffer
913 FrameBuffer(ui32_t size) { Capacity(size); }
914 virtual ~FrameBuffer() {}
916 // Print debugging information to stream (stderr default)
917 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
920 // An object which opens and reads a WAV file. The call to OpenRead() reads metadata from
921 // the file and populates an internal AudioDescriptor object. Each subsequent call to
922 // ReadFrame() reads exactly one frame from the stream into the given FrameBuffer object.
923 // A "frame" is either 2000 or 2002 samples, depending upon the value of PictureRate.
927 mem_ptr<h__WAVParser> m_Parser;
928 ASDCP_NO_COPY_CONSTRUCT(WAVParser);
932 virtual ~WAVParser();
934 // Opens the stream for reading, parses enough data to provide a complete
935 // set of stream metadata for the MXFWriter below. PictureRate controls
936 // ther frame rate for the MXF frame wrapping option.
937 Result_t OpenRead(const std::string& filename, const Rational& PictureRate) const;
939 // Fill an AudioDescriptor struct with the values from the file's header.
940 // Returns RESULT_INIT if the file is not open.
941 Result_t FillAudioDescriptor(AudioDescriptor&) const;
943 // Rewind the stream to the beginning.
944 Result_t Reset() const;
946 // Reads the next sequential frame in the input file and places it in the
947 // frame buffer. Fails if the buffer is too small or the stream is empty.
948 Result_t ReadFrame(FrameBuffer&) const;
956 mem_ptr<h__Writer> m_Writer;
957 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
961 virtual ~MXFWriter();
963 // Warning: direct manipulation of MXF structures can interfere
964 // with the normal operation of the wrapper. Caveat emptor!
965 virtual MXF::OP1aHeader& OP1aHeader();
966 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
967 virtual MXF::RIP& RIP();
969 // Open the file for writing. The file must not exist. Returns error if
970 // the operation cannot be completed or if nonsensical data is discovered
971 // in the essence descriptor.
972 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
973 const AudioDescriptor&, ui32_t HeaderSize = 16384);
975 // Writes a frame of essence to the MXF file. If the optional AESEncContext
976 // argument is present, the essence is encrypted prior to writing.
977 // Fails if the file is not open, is finalized, or an operating system
979 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
981 // Closes the MXF file, writing the index and revised header.
989 mem_ptr<h__Reader> m_Reader;
990 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
994 virtual ~MXFReader();
996 // Warning: direct manipulation of MXF structures can interfere
997 // with the normal operation of the wrapper. Caveat emptor!
998 virtual MXF::OP1aHeader& OP1aHeader();
999 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1000 virtual MXF::RIP& RIP();
1002 // Open the file for reading. The file must exist. Returns error if the
1003 // operation cannot be completed.
1004 Result_t OpenRead(const std::string& filename) const;
1006 // Returns RESULT_INIT if the file is not open.
1007 Result_t Close() const;
1009 // Fill an AudioDescriptor struct with the values from the file's header.
1010 // Returns RESULT_INIT if the file is not open.
1011 Result_t FillAudioDescriptor(AudioDescriptor&) const;
1013 // Fill a WriterInfo struct with the values from the file's header.
1014 // Returns RESULT_INIT if the file is not open.
1015 Result_t FillWriterInfo(WriterInfo&) const;
1017 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1018 // argument is present, the essence is decrypted after reading. If the MXF
1019 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1020 // will contain the ciphertext frame data. If the HMACContext argument is
1021 // not NULL, the HMAC will be calculated (if the file supports it).
1022 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1023 // out of range, or if optional decrypt or HAMC operations fail.
1024 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1026 // Using the index table read from the footer partition, lookup the frame number
1027 // and return the offset into the file at which to read that frame of essence.
1028 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1030 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1032 // Print debugging information to stream
1033 void DumpHeaderMetadata(FILE* = 0) const;
1034 void DumpIndex(FILE* = 0) const;
1038 //---------------------------------------------------------------------------------
1042 const ui32_t MaxComponents = 3;
1043 const ui32_t MaxPrecincts = 32; // ISO 15444-1 Annex A.6.1
1044 const ui32_t MaxDefaults = 256; // made up
1047 struct ImageComponent_t // ISO 15444-1 Annex A.5.1
1054 struct CodingStyleDefault_t // ISO 15444-1 Annex A.6.1
1060 ui8_t ProgressionOrder;
1061 ui8_t NumberOfLayers[sizeof(ui16_t)];
1062 ui8_t MultiCompTransform;
1067 ui8_t DecompositionLevels;
1068 ui8_t CodeblockWidth;
1069 ui8_t CodeblockHeight;
1070 ui8_t CodeblockStyle;
1071 ui8_t Transformation;
1072 ui8_t PrecinctSize[MaxPrecincts];
1076 struct QuantizationDefault_t // ISO 15444-1 Annex A.6.4
1079 ui8_t SPqcd[MaxDefaults];
1084 struct PictureDescriptor
1087 ui32_t ContainerDuration;
1088 Rational SampleRate;
1090 ui32_t StoredHeight;
1091 Rational AspectRatio;
1102 ImageComponent_t ImageComponents[MaxComponents];
1103 CodingStyleDefault_t CodingStyleDefault;
1104 QuantizationDefault_t QuantizationDefault;
1107 // Print debugging information to std::ostream
1108 std::ostream& operator << (std::ostream& strm, const PictureDescriptor& pdesc);
1109 // Print debugging information to stream (stderr default)
1110 void PictureDescriptorDump(const PictureDescriptor&, FILE* = 0);
1113 class FrameBuffer : public ASDCP::FrameBuffer
1117 FrameBuffer(ui32_t size) { Capacity(size); }
1118 virtual ~FrameBuffer() {}
1120 // Print debugging information to stream (stderr default)
1121 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1125 // An object which opens and reads a JPEG 2000 codestream file. The file is expected
1126 // to contain exactly one complete frame of picture essence as an unwrapped (raw)
1127 // ISO/IEC 15444 codestream.
1128 class CodestreamParser
1130 class h__CodestreamParser;
1131 mem_ptr<h__CodestreamParser> m_Parser;
1132 ASDCP_NO_COPY_CONSTRUCT(CodestreamParser);
1136 virtual ~CodestreamParser();
1138 // Opens a file for reading, parses enough data to provide a complete
1139 // set of stream metadata for the MXFWriter below.
1140 // The frame buffer's PlaintextOffset parameter will be set to the first
1141 // byte of the data segment. Set this value to zero if you want
1142 // encrypted headers.
1143 Result_t OpenReadFrame(const std::string& filename, FrameBuffer&) const;
1145 Result_t OpenReadFrame(const unsigned char * data, unsigned int size, FrameBuffer&) const;
1147 // Fill a PictureDescriptor struct with the values from the file's codestream.
1148 // Returns RESULT_INIT if the file is not open.
1149 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1152 // Parses the data in the frame buffer to fill in the picture descriptor. Copies
1153 // the offset of the image data into start_of_data. Returns error if the parser fails.
1154 Result_t ParseMetadataIntoDesc(const FrameBuffer&, PictureDescriptor&, byte_t* start_of_data = 0);
1156 // An object which reads a sequence of files containing JPEG 2000 pictures.
1157 class SequenceParser
1159 class h__SequenceParser;
1160 mem_ptr<h__SequenceParser> m_Parser;
1161 ASDCP_NO_COPY_CONSTRUCT(SequenceParser);
1165 virtual ~SequenceParser();
1167 // Opens a directory for reading. The directory is expected to contain one or
1168 // more files, each containing the codestream for exactly one picture. The
1169 // files must be named such that the frames are in temporal order when sorted
1170 // alphabetically by filename. The parser will automatically parse enough data
1171 // from the first file to provide a complete set of stream metadata for the
1172 // MXFWriter below. If the "pedantic" parameter is given and is true, the
1173 // parser will check the metadata for each codestream and fail if a
1174 // mismatch is detected.
1175 Result_t OpenRead(const std::string& filename, bool pedantic = false) const;
1177 // Opens a file sequence for reading. The sequence is expected to contain one or
1178 // more filenames, each naming a file containing the codestream for exactly one
1179 // picture. The parser will automatically parse enough data
1180 // from the first file to provide a complete set of stream metadata for the
1181 // MXFWriter below. If the "pedantic" parameter is given and is true, the
1182 // parser will check the metadata for each codestream and fail if a
1183 // mismatch is detected.
1184 Result_t OpenRead(const std::list<std::string>& file_list, bool pedantic = false) const;
1186 // Fill a PictureDescriptor struct with the values from the first file's codestream.
1187 // Returns RESULT_INIT if the directory is not open.
1188 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1190 // Rewind the directory to the beginning.
1191 Result_t Reset() const;
1193 // Reads the next sequential frame in the directory and places it in the
1194 // frame buffer. Fails if the buffer is too small or the direcdtory
1195 // contains no more files.
1196 // The frame buffer's PlaintextOffset parameter will be set to the first
1197 // byte of the data segment. Set this value to zero if you want
1198 // encrypted headers.
1199 Result_t ReadFrame(FrameBuffer&) const;
1207 mem_ptr<h__Writer> m_Writer;
1208 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1212 virtual ~MXFWriter();
1214 // Warning: direct manipulation of MXF structures can interfere
1215 // with the normal operation of the wrapper. Caveat emptor!
1216 virtual MXF::OP1aHeader& OP1aHeader();
1217 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1218 virtual MXF::RIP& RIP();
1220 // Open the file for writing. The file must not exist. Returns error if
1221 // the operation cannot be completed or if nonsensical data is discovered
1222 // in the essence descriptor.
1223 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1224 const PictureDescriptor&, ui32_t HeaderSize = 16384);
1226 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1227 // argument is present, the essence is encrypted prior to writing.
1228 // Fails if the file is not open, is finalized, or an operating system
1230 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1232 // Closes the MXF file, writing the index and revised header.
1233 Result_t Finalize();
1240 mem_ptr<h__Reader> m_Reader;
1241 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1245 virtual ~MXFReader();
1247 // Warning: direct manipulation of MXF structures can interfere
1248 // with the normal operation of the wrapper. Caveat emptor!
1249 virtual MXF::OP1aHeader& OP1aHeader();
1250 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1251 virtual MXF::RIP& RIP();
1253 // Open the file for reading. The file must exist. Returns error if the
1254 // operation cannot be completed.
1255 Result_t OpenRead(const std::string& filename) const;
1257 // Returns RESULT_INIT if the file is not open.
1258 Result_t Close() const;
1260 // Fill an AudioDescriptor struct with the values from the file's header.
1261 // Returns RESULT_INIT if the file is not open.
1262 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1264 // Fill a WriterInfo struct with the values from the file's header.
1265 // Returns RESULT_INIT if the file is not open.
1266 Result_t FillWriterInfo(WriterInfo&) const;
1268 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1269 // argument is present, the essence is decrypted after reading. If the MXF
1270 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1271 // will contain the ciphertext frame data. If the HMACContext argument is
1272 // not NULL, the HMAC will be calculated (if the file supports it).
1273 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1274 // out of range, or if optional decrypt or HAMC operations fail.
1275 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1277 // Using the index table read from the footer partition, lookup the frame number
1278 // and return the offset into the file at which to read that frame of essence.
1279 // Returns RESULT_INIT if the file is not open, and RESULT_FRAME if the frame number is
1281 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1283 // Print debugging information to stream
1284 void DumpHeaderMetadata(FILE* = 0) const;
1285 void DumpIndex(FILE* = 0) const;
1289 // Stereoscopic Image support
1292 enum StereoscopicPhase_t
1300 JP2K::FrameBuffer Left;
1301 JP2K::FrameBuffer Right;
1303 SFrameBuffer(ui32_t size) {
1304 Left.Capacity(size);
1305 Right.Capacity(size);
1312 mem_ptr<h__SWriter> m_Writer;
1313 ASDCP_NO_COPY_CONSTRUCT(MXFSWriter);
1317 virtual ~MXFSWriter();
1319 // Warning: direct manipulation of MXF structures can interfere
1320 // with the normal operation of the wrapper. Caveat emptor!
1321 virtual MXF::OP1aHeader& OP1aHeader();
1322 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1323 virtual MXF::RIP& RIP();
1325 // Open the file for writing. The file must not exist. Returns error if
1326 // the operation cannot be completed or if nonsensical data is discovered
1327 // in the essence descriptor.
1328 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1329 const PictureDescriptor&, ui32_t HeaderSize = 16384);
1331 // Writes a pair of frames of essence to the MXF file. If the optional AESEncContext
1332 // argument is present, the essence is encrypted prior to writing.
1333 // Fails if the file is not open, is finalized, or an operating system
1335 Result_t WriteFrame(const SFrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1337 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1338 // argument is present, the essence is encrypted prior to writing.
1339 // Fails if the file is not open, is finalized, or an operating system
1340 // error occurs. Frames must be written in the proper phase (L-R-L-R),
1341 // RESULT_SPHASE will be returned if phase is reversed. The first frame
1342 // written must be left eye.
1343 Result_t WriteFrame(const FrameBuffer&, StereoscopicPhase_t phase,
1344 AESEncContext* = 0, HMACContext* = 0);
1346 // Closes the MXF file, writing the index and revised header. Returns
1347 // RESULT_SPHASE if WriteFrame was called an odd number of times.
1348 Result_t Finalize();
1355 mem_ptr<h__SReader> m_Reader;
1356 ASDCP_NO_COPY_CONSTRUCT(MXFSReader);
1360 virtual ~MXFSReader();
1362 // Warning: direct manipulation of MXF structures can interfere
1363 // with the normal operation of the wrapper. Caveat emptor!
1364 virtual MXF::OP1aHeader& OP1aHeader();
1365 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1366 virtual MXF::RIP& RIP();
1368 // Open the file for reading. The file must exist. Returns error if the
1369 // operation cannot be completed.
1370 Result_t OpenRead(const std::string& filename) const;
1372 // Returns RESULT_INIT if the file is not open.
1373 Result_t Close() const;
1375 // Fill an AudioDescriptor struct with the values from the file's header.
1376 // Returns RESULT_INIT if the file is not open.
1377 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1379 // Fill a WriterInfo struct with the values from the file's header.
1380 // Returns RESULT_INIT if the file is not open.
1381 Result_t FillWriterInfo(WriterInfo&) const;
1383 // Reads a pair of frames of essence from the MXF file. If the optional AESEncContext
1384 // argument is present, the essence is decrypted after reading. If the MXF
1385 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1386 // will contain the ciphertext frame data. If the HMACContext argument is
1387 // not NULL, the HMAC will be calculated (if the file supports it).
1388 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1389 // out of range, or if optional decrypt or HAMC operations fail.
1390 Result_t ReadFrame(ui32_t frame_number, SFrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1392 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1393 // argument is present, the essence is decrypted after reading. If the MXF
1394 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1395 // will contain the ciphertext frame data. If the HMACContext argument is
1396 // not NULL, the HMAC will be calculated (if the file supports it).
1397 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1398 // out of range, or if optional decrypt or HAMC operations fail.
1399 Result_t ReadFrame(ui32_t frame_number, StereoscopicPhase_t phase,
1400 FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1402 // Using the index table read from the footer partition, lookup the frame number
1403 // and return the offset into the file at which to read that frame of essence.
1404 // Returns RESULT_INIT if the file is not open, and RESULT_FRAME if the frame number is
1406 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1408 // Print debugging information to stream
1409 void DumpHeaderMetadata(FILE* = 0) const;
1410 void DumpIndex(FILE* = 0) const;
1414 //---------------------------------------------------------------------------------
1418 enum MIMEType_t { MT_BIN, MT_PNG, MT_OPENTYPE };
1420 struct TimedTextResourceDescriptor
1422 byte_t ResourceID[UUIDlen];
1425 TimedTextResourceDescriptor() : Type(MT_BIN) {}
1428 typedef std::list<TimedTextResourceDescriptor> ResourceList_t;
1430 struct TimedTextDescriptor
1432 Rational EditRate; //
1433 ui32_t ContainerDuration;
1434 byte_t AssetID[UUIDlen];
1435 std::string NamespaceName;
1436 std::string EncodingName;
1437 ResourceList_t ResourceList;
1439 TimedTextDescriptor() : ContainerDuration(0), EncodingName("UTF-8") {} // D-Cinema format is always UTF-8
1442 // Print debugging information to std::ostream
1443 std::ostream& operator << (std::ostream& strm, const TimedTextDescriptor& tinfo);
1444 // Print debugging information to stream (stderr default)
1445 void DescriptorDump(const TimedTextDescriptor&, FILE* = 0);
1448 class FrameBuffer : public ASDCP::FrameBuffer
1450 ASDCP_NO_COPY_CONSTRUCT(FrameBuffer); // TODO: should have copy construct
1453 byte_t m_AssetID[UUIDlen];
1454 std::string m_MIMEType;
1457 FrameBuffer() { memset(m_AssetID, 0, UUIDlen); }
1458 FrameBuffer(ui32_t size) { Capacity(size); memset(m_AssetID, 0, UUIDlen); }
1459 virtual ~FrameBuffer() {}
1461 inline const byte_t* AssetID() const { return m_AssetID; }
1462 inline void AssetID(const byte_t* buf) { memcpy(m_AssetID, buf, UUIDlen); }
1463 inline const char* MIMEType() const { return m_MIMEType.c_str(); }
1464 inline void MIMEType(const std::string& s) { m_MIMEType = s; }
1466 // Print debugging information to stream (stderr default)
1467 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1470 // An abstract base for a lookup service that returns the resource data
1471 // identified by the given ancillary resource id.
1473 class IResourceResolver
1476 virtual ~IResourceResolver() {}
1477 virtual Result_t ResolveRID(const byte_t* uuid, FrameBuffer&) const = 0; // return data for RID
1480 // Resolves resource references by testing the named directory for file names containing
1481 // the respective UUID.
1483 class LocalFilenameResolver : public ASDCP::TimedText::IResourceResolver
1485 std::string m_Dirname;
1486 ASDCP_NO_COPY_CONSTRUCT(LocalFilenameResolver);
1489 LocalFilenameResolver();
1490 virtual ~LocalFilenameResolver();
1491 Result_t OpenRead(const std::string& dirname);
1492 Result_t ResolveRID(const byte_t* uuid, FrameBuffer& FrameBuf) const;
1496 class DCSubtitleParser
1498 class h__SubtitleParser;
1499 mem_ptr<h__SubtitleParser> m_Parser;
1500 ASDCP_NO_COPY_CONSTRUCT(DCSubtitleParser);
1504 virtual ~DCSubtitleParser();
1506 // Opens an XML file for reading, parses data to provide a complete
1507 // set of stream metadata for the MXFWriter below.
1508 Result_t OpenRead(const std::string& filename) const;
1510 // Parses an XML document to provide a complete set of stream metadata
1511 // for the MXFWriter below. The optional filename argument is used to
1512 // initialize the default resource resolver (see ReadAncillaryResource).
1513 Result_t OpenRead(const std::string& xml_doc, const std::string& filename) const;
1515 // Fill a TimedTextDescriptor struct with the values from the file's contents.
1516 // Returns RESULT_INIT if the file is not open.
1517 Result_t FillTimedTextDescriptor(TimedTextDescriptor&) const;
1519 // Reads the complete Timed Text Resource into the given string.
1520 Result_t ReadTimedTextResource(std::string&) const;
1522 // Reads the Ancillary Resource having the given ID. Fails if the buffer
1523 // is too small or the resource does not exist. The optional Resolver
1524 // argument can be provided which will be used to retrieve the resource
1525 // having a particulat UUID. If a Resolver is not supplied, the default
1526 // internal resolver will return the contents of the file having the UUID
1527 // as the filename. The filename must exist in the same directory as the
1528 // XML file opened with OpenRead().
1529 Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&,
1530 const IResourceResolver* Resolver = 0) const;
1537 mem_ptr<h__Writer> m_Writer;
1538 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1542 virtual ~MXFWriter();
1544 // Warning: direct manipulation of MXF structures can interfere
1545 // with the normal operation of the wrapper. Caveat emptor!
1546 virtual MXF::OP1aHeader& OP1aHeader();
1547 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1548 virtual MXF::RIP& RIP();
1550 // Open the file for writing. The file must not exist. Returns error if
1551 // the operation cannot be completed or if nonsensical data is discovered
1552 // in the essence descriptor.
1553 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1554 const TimedTextDescriptor&, ui32_t HeaderSize = 16384);
1556 // Writes the Timed-Text Resource to the MXF file. The file must be UTF-8
1557 // encoded. If the optional AESEncContext argument is present, the essence
1558 // is encrypted prior to writing. Fails if the file is not open, is finalized,
1559 // or an operating system error occurs.
1560 // This method may only be called once, and it must be called before any
1561 // call to WriteAncillaryResource(). RESULT_STATE will be returned if these
1562 // conditions are not met.
1563 Result_t WriteTimedTextResource(const std::string& XMLDoc, AESEncContext* = 0, HMACContext* = 0);
1565 // Writes an Ancillary Resource to the MXF file. If the optional AESEncContext
1566 // argument is present, the essence is encrypted prior to writing.
1567 // Fails if the file is not open, is finalized, or an operating system
1568 // error occurs. RESULT_STATE will be returned if the method is called before
1569 // WriteTimedTextResource()
1570 Result_t WriteAncillaryResource(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1572 // Closes the MXF file, writing the index and revised header.
1573 Result_t Finalize();
1580 mem_ptr<h__Reader> m_Reader;
1581 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1585 virtual ~MXFReader();
1587 // Warning: direct manipulation of MXF structures can interfere
1588 // with the normal operation of the wrapper. Caveat emptor!
1589 virtual MXF::OP1aHeader& OP1aHeader();
1590 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1591 virtual MXF::RIP& RIP();
1593 // Open the file for reading. The file must exist. Returns error if the
1594 // operation cannot be completed.
1595 Result_t OpenRead(const std::string& filename) const;
1597 // Returns RESULT_INIT if the file is not open.
1598 Result_t Close() const;
1600 // Fill a TimedTextDescriptor struct with the values from the file's header.
1601 // Returns RESULT_INIT if the file is not open.
1602 Result_t FillTimedTextDescriptor(TimedTextDescriptor&) const;
1604 // Fill a WriterInfo struct with the values from the file's header.
1605 // Returns RESULT_INIT if the file is not open.
1606 Result_t FillWriterInfo(WriterInfo&) const;
1608 // Reads the complete Timed Text Resource into the given string. Fails if the resource
1609 // is encrypted and AESDecContext is NULL (use the following method to retrieve the
1610 // raw ciphertet block).
1611 Result_t ReadTimedTextResource(std::string&, AESDecContext* = 0, HMACContext* = 0) const;
1613 // Reads the complete Timed Text Resource from the MXF file. If the optional AESEncContext
1614 // argument is present, the resource is decrypted after reading. If the MXF
1615 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1616 // will contain the ciphertext frame data. If the HMACContext argument is
1617 // not NULL, the HMAC will be calculated (if the file supports it).
1618 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1619 // out of range, or if optional decrypt or HAMC operations fail.
1620 Result_t ReadTimedTextResource(FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1622 // Reads the timed-text resource having the given UUID from the MXF file. If the
1623 // optional AESEncContext argument is present, the resource is decrypted after
1624 // reading. If the MXF file is encrypted and the AESDecContext argument is NULL,
1625 // the frame buffer will contain the ciphertext frame data. If the HMACContext
1626 // argument is not NULL, the HMAC will be calculated (if the file supports it).
1627 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1628 // out of range, or if optional decrypt or HAMC operations fail.
1629 Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1631 // Print debugging information to stream
1632 void DumpHeaderMetadata(FILE* = 0) const;
1633 void DumpIndex(FILE* = 0) const;
1635 } // namespace TimedText
1637 //---------------------------------------------------------------------------------
1641 struct DCDataDescriptor
1643 Rational EditRate; // Sample rate
1644 ui32_t ContainerDuration; // number of frames
1645 byte_t AssetID[UUIDlen]; // The UUID for the DCData track
1646 byte_t DataEssenceCoding[UUIDlen]; // The coding for the data carried
1649 // Print DCDataDescriptor to std::ostream
1650 std::ostream& operator << (std::ostream& strm, const DCDataDescriptor& ddesc);
1651 // Print debugging information to stream (stderr default)
1652 void DCDataDescriptorDump(const DCDataDescriptor&, FILE* = 0);
1655 class FrameBuffer : public ASDCP::FrameBuffer
1659 FrameBuffer(ui32_t size) { Capacity(size); }
1660 virtual ~FrameBuffer() {}
1662 // Print debugging information to stream (stderr default)
1663 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1666 // An object which opens and reads a DC Data file. The file is expected
1667 // to contain exactly one complete frame of DC data essence as an unwrapped (raw)
1669 class BytestreamParser
1671 class h__BytestreamParser;
1672 mem_ptr<h__BytestreamParser> m_Parser;
1673 ASDCP_NO_COPY_CONSTRUCT(BytestreamParser);
1677 virtual ~BytestreamParser();
1679 // Opens a file for reading, parses enough data to provide a complete
1680 // set of stream metadata for the MXFWriter below.
1681 // The frame buffer's PlaintextOffset parameter will be set to the first
1682 // byte of the data segment. Set this value to zero if you want
1683 // encrypted headers.
1684 Result_t OpenReadFrame(const std::string& filename, FrameBuffer&) const;
1686 // Fill a DCDataDescriptor struct with the values from the file's bytestream.
1687 // Returns RESULT_INIT if the file is not open.
1688 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1691 // An object which reads a sequence of files containing DC Data.
1692 class SequenceParser
1694 class h__SequenceParser;
1695 mem_ptr<h__SequenceParser> m_Parser;
1696 ASDCP_NO_COPY_CONSTRUCT(SequenceParser);
1700 virtual ~SequenceParser();
1702 // Opens a directory for reading. The directory is expected to contain one or
1703 // more files, each containing the bytestream for exactly one frame. The files
1704 // must be named such that the frames are in temporal order when sorted
1705 // alphabetically by filename.
1706 Result_t OpenRead(const std::string& filename) const;
1708 // Opens a file sequence for reading. The sequence is expected to contain one or
1709 // more filenames, each naming a file containing the bytestream for exactly one
1711 Result_t OpenRead(const std::list<std::string>& file_list) const;
1713 // Fill a DCDataDescriptor struct with default values.
1714 // Returns RESULT_INIT if the directory is not open.
1715 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1717 // Rewind the directory to the beginning.
1718 Result_t Reset() const;
1720 // Reads the next sequential frame in the directory and places it in the
1721 // frame buffer. Fails if the buffer is too small or the direcdtory
1722 // contains no more files.
1723 // The frame buffer's PlaintextOffset parameter will be set to the first
1724 // byte of the data segment. Set this value to zero if you want
1725 // encrypted headers.
1726 Result_t ReadFrame(FrameBuffer&) const;
1733 mem_ptr<h__Writer> m_Writer;
1734 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1738 virtual ~MXFWriter();
1740 // Warning: direct manipulation of MXF structures can interfere
1741 // with the normal operation of the wrapper. Caveat emptor!
1742 virtual MXF::OP1aHeader& OP1aHeader();
1743 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1744 virtual MXF::RIP& RIP();
1746 // Open the file for writing. The file must not exist. Returns error if
1747 // the operation cannot be completed or if nonsensical data is discovered
1748 // in the essence descriptor.
1749 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1750 const DCDataDescriptor&, ui32_t HeaderSize = 16384);
1752 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1753 // argument is present, the essence is encrypted prior to writing.
1754 // Fails if the file is not open, is finalized, or an operating system
1756 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1758 // Closes the MXF file, writing the index and revised header.
1759 Result_t Finalize();
1766 mem_ptr<h__Reader> m_Reader;
1767 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1771 virtual ~MXFReader();
1773 // Warning: direct manipulation of MXF structures can interfere
1774 // with the normal operation of the wrapper. Caveat emptor!
1775 virtual MXF::OP1aHeader& OP1aHeader();
1776 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1777 virtual MXF::RIP& RIP();
1779 // Open the file for reading. The file must exist. Returns error if the
1780 // operation cannot be completed.
1781 Result_t OpenRead(const std::string& filename) const;
1783 // Returns RESULT_INIT if the file is not open.
1784 Result_t Close() const;
1786 // Fill a DCDataDescriptor struct with the values from the file's header.
1787 // Returns RESULT_INIT if the file is not open.
1788 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1790 // Fill a WriterInfo struct with the values from the file's header.
1791 // Returns RESULT_INIT if the file is not open.
1792 Result_t FillWriterInfo(WriterInfo&) const;
1794 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1795 // argument is present, the essence is decrypted after reading. If the MXF
1796 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1797 // will contain the ciphertext frame data. If the HMACContext argument is
1798 // not NULL, the HMAC will be calculated (if the file supports it).
1799 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1800 // out of range, or if optional decrypt or HAMC operations fail.
1801 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1803 // Using the index table read from the footer partition, lookup the frame number
1804 // and return the offset into the file at which to read that frame of essence.
1805 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1807 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1809 // Print debugging information to stream
1810 void DumpHeaderMetadata(FILE* = 0) const;
1811 void DumpIndex(FILE* = 0) const;
1814 } // namespace DCData
1816 //---------------------------------------------------------------------------------
1820 struct AtmosDescriptor : public DCData::DCDataDescriptor
1822 ui32_t FirstFrame; // Frame number of the frame to align with the FFOA of the picture track
1823 ui16_t MaxChannelCount; // Max number of channels in bitstream
1824 ui16_t MaxObjectCount; // Max number of objects in bitstream
1825 byte_t AtmosID[UUIDlen]; // UUID of Atmos Project
1826 ui8_t AtmosVersion; // ATMOS Coder Version used to create bitstream
1829 // Print AtmosDescriptor to std::ostream
1830 std::ostream& operator << (std::ostream& strm, const AtmosDescriptor& adesc);
1831 // Print debugging information to stream (stderr default)
1832 void AtmosDescriptorDump(const AtmosDescriptor&, FILE* = 0);
1833 // Determine if a file is a raw atmos file
1834 bool IsDolbyAtmos(const std::string& filename);
1841 mem_ptr<h__Writer> m_Writer;
1842 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1846 virtual ~MXFWriter();
1848 // Warning: direct manipulation of MXF structures can interfere
1849 // with the normal operation of the wrapper. Caveat emptor!
1850 virtual MXF::OP1aHeader& OP1aHeader();
1851 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1852 virtual MXF::RIP& RIP();
1854 // Open the file for writing. The file must not exist. Returns error if
1855 // the operation cannot be completed or if nonsensical data is discovered
1856 // in the essence descriptor.
1857 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1858 const AtmosDescriptor&, ui32_t HeaderSize = 16384);
1860 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1861 // argument is present, the essence is encrypted prior to writing.
1862 // Fails if the file is not open, is finalized, or an operating system
1864 Result_t WriteFrame(const DCData::FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1866 // Closes the MXF file, writing the index and revised header.
1867 Result_t Finalize();
1874 mem_ptr<h__Reader> m_Reader;
1875 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1879 virtual ~MXFReader();
1881 // Warning: direct manipulation of MXF structures can interfere
1882 // with the normal operation of the wrapper. Caveat emptor!
1883 virtual MXF::OP1aHeader& OP1aHeader();
1884 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1885 virtual MXF::RIP& RIP();
1887 // Open the file for reading. The file must exist. Returns error if the
1888 // operation cannot be completed.
1889 Result_t OpenRead(const std::string& filename) const;
1891 // Returns RESULT_INIT if the file is not open.
1892 Result_t Close() const;
1894 // Fill an AtmosDescriptor struct with the values from the file's header.
1895 // Returns RESULT_INIT if the file is not open.
1896 Result_t FillAtmosDescriptor(AtmosDescriptor&) const;
1898 // Fill a WriterInfo struct with the values from the file's header.
1899 // Returns RESULT_INIT if the file is not open.
1900 Result_t FillWriterInfo(WriterInfo&) const;
1902 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1903 // argument is present, the essence is decrypted after reading. If the MXF
1904 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1905 // will contain the ciphertext frame data. If the HMACContext argument is
1906 // not NULL, the HMAC will be calculated (if the file supports it).
1907 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1908 // out of range, or if optional decrypt or HAMC operations fail.
1909 Result_t ReadFrame(ui32_t frame_number, DCData::FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1911 // Using the index table read from the footer partition, lookup the frame number
1912 // and return the offset into the file at which to read that frame of essence.
1913 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1915 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1917 // Print debugging information to stream
1918 void DumpHeaderMetadata(FILE* = 0) const;
1919 void DumpIndex(FILE* = 0) const;
1922 } // namespace ATMOS
1926 } // namespace ASDCP
1929 #endif // _AS_DCP_H_