2 Copyright (c) 2003-2018, 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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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
224 ESS_AS02_ISXD, // the file contains an ISXD document stream (per SMPTE RDD 47)
225 ESS_AS02_ACES, // the file contains two or more ACES codestreams (per SMPTE ST 2067-50)
229 // Determine the type of essence contained in the given MXF file. RESULT_OK
230 // is returned if the file is successfully opened and contains a valid MXF
231 // stream. If there is an error, the result code will indicate the reason.
232 Result_t EssenceType(const std::string& filename, EssenceType_t& type);
234 // Determine the type of essence contained in the given raw file. RESULT_OK
235 // is returned if the file is successfully opened and contains a known
236 // stream type. If there is an error, the result code will indicate the reason.
237 Result_t RawEssenceType(const std::string& filename, EssenceType_t& type);
240 //---------------------------------------------------------------------------------
243 // A simple container for rational numbers.
250 Rational() : Numerator(0), Denominator(0) {}
251 Rational(i32_t n, i32_t d) : Numerator(n), Denominator(d) {}
253 inline double Quotient() const {
254 return (double)Numerator / (double)Denominator;
257 inline bool operator==(const Rational& rhs) const {
258 return ( rhs.Numerator == Numerator && rhs.Denominator == Denominator );
261 inline bool operator!=(const Rational& rhs) const {
262 return ( rhs.Numerator != Numerator || rhs.Denominator != Denominator );
265 inline bool operator<(const Rational& rhs) {
266 if ( Numerator < rhs.Numerator ) return true;
267 if ( Numerator == rhs.Numerator && Denominator < rhs.Denominator ) return true;
271 inline bool operator>(const Rational& rhs) {
272 if ( Numerator > rhs.Numerator ) return true;
273 if ( Numerator == rhs.Numerator && Denominator > rhs.Denominator ) return true;
278 // Encodes a rational number as a string having a single delimiter character between
279 // numerator and denominator. Retuns the buffer pointer to allow convenient in-line use.
280 const char* EncodeRational(const Rational&, char* str_buf, ui32_t buf_len, char delimiter = ' ');
282 // Decodes a rational number havng a single non-digit delimiter character between
283 // the numerator and denominator. Returns false if the string does not contain
284 // the expected syntax.
285 bool DecodeRational(const char* str_rat, Rational&);
288 // common edit rates, use these instead of hard coded constants
289 const Rational EditRate_24 = Rational(24,1);
290 const Rational EditRate_23_98 = Rational(24000,1001); // Not a DCI-compliant value!
291 const Rational EditRate_48 = Rational(48,1);
292 const Rational SampleRate_48k = Rational(48000,1);
293 const Rational SampleRate_96k = Rational(96000,1);
295 // Additional frame rates, see ST 428-11, ST 429-13
296 // These rates are new and not supported by all systems. Do not assume that
297 // a package made using one of these rates will work just anywhere!
298 const Rational EditRate_25 = Rational(25,1);
299 const Rational EditRate_30 = Rational(30,1);
300 const Rational EditRate_50 = Rational(50,1);
301 const Rational EditRate_60 = Rational(60,1);
302 const Rational EditRate_96 = Rational(96,1);
303 const Rational EditRate_100 = Rational(100,1);
304 const Rational EditRate_120 = Rational(120,1);
305 const Rational EditRate_192 = Rational(192,1);
306 const Rational EditRate_200 = Rational(200,1);
307 const Rational EditRate_240 = Rational(240,1);
309 // Archival frame rates, see ST 428-21
310 // These rates are new and not supported by all systems. Do not assume that
311 // a package made using one of these rates will work just anywhere!
312 const Rational EditRate_16 = Rational(16,1);
313 const Rational EditRate_18 = Rational(200,11); // 18.182
314 const Rational EditRate_20 = Rational(20,1);
315 const Rational EditRate_22 = Rational(240,11); // 21.818
318 // Non-reference counting container for internal member objects.
319 // Please do not use this class for any other purpose.
323 T* m_p; // the thing we point to
327 mem_ptr() : m_p(0) {}
328 mem_ptr(T* p) : m_p(p) {}
329 ~mem_ptr() { delete m_p; }
331 inline T& operator*() const { return *m_p; }
332 inline T* operator->() const { return m_p; }
333 inline operator T*()const { return m_p; }
334 inline const mem_ptr<T>& operator=(T* p) { set(p); return *this; }
335 inline T* set(T* p) { delete m_p; m_p = p; return m_p; }
336 inline T* get() const { return m_p; }
337 inline void release() { m_p = 0; }
338 inline bool empty() const { return m_p == 0; }
342 //---------------------------------------------------------------------------------
343 // WriterInfo class - encapsulates writer identification details used for
344 // OpenWrite() calls. Replace these values at runtime to identify your product.
346 // MXF files use SMPTE Universal Labels to identify data items. The set of Labels
347 // in a file is determined by the MXF Operational Pattern and any constraining
348 // documentation. There are currently two flavors of AS-DCP file in use: MXF Interop
349 // (AKA JPEG Interop) and SMPTE. The two differ in the values of three labels:
352 // Interop : 06 0e 2b 34 04 01 01 01 0d 01 02 01 10 00 00 00
353 // SMPTE : 06 0e 2b 34 04 01 01 02 0d 01 02 01 10 00 00 00
356 // Interop : 06 0e 2b 34 02 04 01 07 0d 01 03 01 02 7e 01 00
357 // SMPTE : 06 0e 2b 34 02 04 01 01 0d 01 03 01 02 7e 01 00
359 // GenericDescriptor/SubDescriptors:
360 // Interop : 06 0e 2b 34 01 01 01 02 06 01 01 04 06 10 00 00
361 // SMPTE : 06 0e 2b 34 01 01 01 09 06 01 01 04 06 10 00 00
363 // asdcplib will read any (otherwise valid) file which has any combination of the
364 // above values. When writing files, MXF Interop labels are used by default. To
365 // write a file containing SMPTE labels, replace the default label set value in
366 // the WriterInfo before calling OpenWrite()
380 byte_t ProductUUID[UUIDlen];
381 byte_t AssetUUID[UUIDlen];
382 byte_t ContextID[UUIDlen];
383 byte_t CryptographicKeyID[UUIDlen];
384 bool EncryptedEssence; // true if essence data is (or is going to be) encrypted
385 bool UsesHMAC; // true if HMAC exists or is to be calculated
386 std::string ProductVersion;
387 std::string CompanyName;
388 std::string ProductName;
389 LabelSet_t LabelSetType;
391 WriterInfo() : EncryptedEssence(false), UsesHMAC(false), LabelSetType(LS_MXF_INTEROP)
393 static byte_t default_ProductUUID_Data[UUIDlen] = {
394 0x43, 0x05, 0x9a, 0x1d, 0x04, 0x32, 0x41, 0x01,
395 0xb8, 0x3f, 0x73, 0x68, 0x15, 0xac, 0xf3, 0x1d };
397 memcpy(ProductUUID, default_ProductUUID_Data, UUIDlen);
398 memset(AssetUUID, 0, UUIDlen);
399 memset(ContextID, 0, UUIDlen);
400 memset(CryptographicKeyID, 0, UUIDlen);
402 ProductVersion = "Unreleased ";
403 ProductVersion += Version();
405 ProductName = "asdcplib";
409 // Print WriterInfo to std::ostream
410 std::ostream& operator << (std::ostream& strm, const WriterInfo& winfo);
411 // Print WriterInfo to stream, stderr by default.
412 void WriterInfoDump(const WriterInfo&, FILE* = 0);
414 //---------------------------------------------------------------------------------
415 // cryptographic support
417 // The following classes define interfaces to Rijndael contexts having the following properties:
419 // o CBC mode with 16 byte block size
420 const ui32_t CBC_KEY_SIZE = 16;
421 const ui32_t CBC_BLOCK_SIZE = 16;
422 const ui32_t HMAC_SIZE = 20;
428 mem_ptr<h__AESContext> m_Context;
429 ASDCP_NO_COPY_CONSTRUCT(AESEncContext);
435 // Initializes Rijndael CBC encryption context.
436 // Returns error if the key argument is NULL.
437 Result_t InitKey(const byte_t* key);
439 // Initializes 16 byte CBC Initialization Vector. This operation may be performed
440 // any number of times for a given key.
441 // Returns error if the i_vec argument is NULL.
442 Result_t SetIVec(const byte_t* i_vec);
443 Result_t GetIVec(byte_t* i_vec) const;
445 // Encrypt a block of data. The block size must be a multiple of CBC_BLOCK_SIZE.
446 // Returns error if either argument is NULL.
447 Result_t EncryptBlock(const byte_t* pt_buf, byte_t* ct_buf, ui32_t block_size);
454 mem_ptr<h__AESContext> m_Context;
455 ASDCP_NO_COPY_CONSTRUCT(AESDecContext);
461 // Initializes Rijndael CBC decryption context.
462 // Returns error if the key argument is NULL.
463 Result_t InitKey(const byte_t* key);
465 // Initializes 16 byte CBC Initialization Vector. This operation may be performed
466 // any number of times for a given key.
467 // Returns error if the i_vec argument is NULL.
468 Result_t SetIVec(const byte_t* i_vec);
470 // Decrypt a block of data. The block size must be a multiple of CBC_BLOCK_SIZE.
471 // Returns error if either argument is NULL.
472 Result_t DecryptBlock(const byte_t* ct_buf, byte_t* pt_buf, ui32_t block_size);
478 class h__HMACContext;
479 mem_ptr<h__HMACContext> m_Context;
480 ASDCP_NO_COPY_CONSTRUCT(HMACContext);
486 // Initializes HMAC context. The key argument must point to a binary
487 // key that is CBC_KEY_SIZE bytes in length. Returns error if the key
489 Result_t InitKey(const byte_t* key, LabelSet_t);
491 // Reset internal state, allows repeated cycles of Update -> Finalize
494 // Add data to the digest. Returns error if the key argument is NULL or
495 // if the digest has been finalized.
496 Result_t Update(const byte_t* buf, ui32_t buf_len);
498 // Finalize digest. Returns error if the digest has already been finalized.
501 // Writes HMAC value to given buffer. buf must point to a writable area of
502 // memory that is at least HMAC_SIZE bytes in length. Returns error if the
503 // buf argument is NULL or if the digest has not been finalized.
504 Result_t GetHMACValue(byte_t* buf) const;
506 // Tests the given value against the finalized value in the object. buf must
507 // point to a readable area of memory that is at least HMAC_SIZE bytes in length.
508 // Returns error if the buf argument is NULL or if the values do ot match.
509 Result_t TestHMACValue(const byte_t* buf) const;
512 //---------------------------------------------------------------------------------
513 // frame buffer base class
515 // The supported essence types are stored using per-frame KLV packetization. The
516 // following class implements essence-neutral functionality for managing a buffer
517 // containing a frame of essence.
521 ASDCP_NO_COPY_CONSTRUCT(FrameBuffer);
524 byte_t* m_Data; // pointer to memory area containing frame data
525 ui32_t m_Capacity; // size of memory area pointed to by m_Data
526 bool m_OwnMem; // if false, m_Data points to externally allocated memory
527 ui32_t m_Size; // size of frame data in memory area pointed to by m_Data
528 ui32_t m_FrameNumber; // delivery-order frame number
530 // It is possible to read raw ciphertext from an encrypted AS-DCP file.
531 // After reading an encrypted AS-DCP file in raw mode, the frame buffer will
532 // contain the encrypted source value portion of the Encrypted Triplet, followed
533 // by the integrity pack, if it exists.
534 // The buffer will begin with the IV and CheckValue, followed by encrypted essence
535 // and optional integrity pack
536 // The SourceLength and PlaintextOffset values from the packet will be held in the
537 // following variables:
538 ui32_t m_SourceLength; // plaintext length (delivered plaintext+decrypted ciphertext)
539 ui32_t m_PlaintextOffset; // offset to first byte of ciphertext
543 virtual ~FrameBuffer();
545 // Instructs the object to use an externally allocated buffer. The external
546 // buffer will not be cleaned up by the frame buffer when it exits.
547 // Call with (0,0) to revert to internally allocated buffer.
548 // Returns error if the buf_addr argument is NULL and buf_size is non-zero.
549 Result_t SetData(byte_t* buf_addr, ui32_t buf_size);
551 // Sets the size of the internally allocate buffer. Returns RESULT_CAPEXTMEM
552 // if the object is using an externally allocated buffer via SetData();
553 // Resets content size to zero.
554 Result_t Capacity(ui32_t cap);
556 // returns the size of the buffer
557 inline ui32_t Capacity() const { return m_Capacity; }
559 // returns a const pointer to the essence data
560 inline const byte_t* RoData() const { return m_Data; }
562 // returns a non-const pointer to the essence data
563 inline byte_t* Data() { return m_Data; }
565 // set the size of the buffer's contents
566 inline ui32_t Size(ui32_t size) { return m_Size = size; }
568 // returns the size of the buffer's contents
569 inline ui32_t Size() const { return m_Size; }
571 // Sets the absolute frame number of this frame in the file in delivery order.
572 inline void FrameNumber(ui32_t num) { m_FrameNumber = num; }
574 // Returns the absolute frame number of this frame in the file in delivery order.
575 inline ui32_t FrameNumber() const { return m_FrameNumber; }
577 // Sets the length of the plaintext essence data
578 inline void SourceLength(ui32_t len) { m_SourceLength = len; }
580 // When this value is 0 (zero), the buffer contains only plaintext. When it is
581 // non-zero, the buffer contains raw ciphertext and the return value is the length
582 // of the original plaintext.
583 inline ui32_t SourceLength() const { return m_SourceLength; }
585 // Sets the offset into the buffer at which encrypted data begins
586 inline void PlaintextOffset(ui32_t ofst) { m_PlaintextOffset = ofst; }
588 // Returns offset into buffer of first byte of ciphertext.
589 inline ui32_t PlaintextOffset() const { return m_PlaintextOffset; }
592 //---------------------------------------------------------------------------------
593 // Accessors in the MXFReader and MXFWriter classes below return these types to
594 // provide direct access to MXF metadata structures declared in MXF.h and Metadata.h
597 // #include<Metadata.h> to use these
599 class OPAtomIndexFooter;
603 //---------------------------------------------------------------------------------
604 // MPEG2 video elementary stream support
609 // MPEG picture coding type
611 FRAME_U = 0x00, // Unknown
612 FRAME_I = 0x01, // I-Frame
613 FRAME_P = 0x02, // P-Frame
614 FRAME_B = 0x03 // B-Frame
617 // convert FrameType_t to char
618 inline char FrameTypeChar(FrameType_t type)
622 case FRAME_I: return 'I';
623 case FRAME_B: return 'B';
624 case FRAME_P: return 'P';
629 // Structure represents the metadata elements in the file header's
630 // MPEG2VideoDescriptor object.
631 struct VideoDescriptor
633 Rational EditRate; //
635 Rational SampleRate; //
636 ui8_t FrameLayout; //
637 ui32_t StoredWidth; //
638 ui32_t StoredHeight; //
639 Rational AspectRatio; //
640 ui32_t ComponentDepth; //
641 ui32_t HorizontalSubsampling; //
642 ui32_t VerticalSubsampling; //
643 ui8_t ColorSiting; //
644 ui8_t CodedContentType; //
647 ui8_t ProfileAndLevel; //
648 ui32_t ContainerDuration; //
651 // Print VideoDescriptor to std::ostream
652 std::ostream& operator << (std::ostream& strm, const VideoDescriptor& vdesc);
653 // Print VideoDescriptor to stream, stderr by default.
654 void VideoDescriptorDump(const VideoDescriptor&, FILE* = 0);
656 // A container for MPEG frame data.
657 class FrameBuffer : public ASDCP::FrameBuffer
659 ASDCP_NO_COPY_CONSTRUCT(FrameBuffer); // TODO: should have copy construct
662 FrameType_t m_FrameType;
663 ui8_t m_TemporalOffset;
669 m_FrameType(FRAME_U), m_TemporalOffset(0),
670 m_ClosedGOP(false), m_GOPStart(false) {}
672 FrameBuffer(ui32_t size) :
673 m_FrameType(FRAME_U), m_TemporalOffset(0),
674 m_ClosedGOP(false), m_GOPStart(false)
679 virtual ~FrameBuffer() {}
681 // Sets the MPEG frame type of the picture data in the frame buffer.
682 inline void FrameType(FrameType_t type) { m_FrameType = type; }
684 // Returns the MPEG frame type of the picture data in the frame buffer.
685 inline FrameType_t FrameType() const { return m_FrameType; }
687 // Sets the MPEG temporal offset of the picture data in the frame buffer.
688 inline void TemporalOffset(ui8_t offset) { m_TemporalOffset = offset; }
690 // Returns the MPEG temporal offset of the picture data in the frame buffer.
691 inline ui8_t TemporalOffset() const { return m_TemporalOffset; }
693 // Sets the MPEG GOP 'start' attribute for the frame buffer.
694 inline void GOPStart(bool start) { m_GOPStart = start; }
696 // True if the frame in the buffer is the first in the GOP (in transport order)
697 inline bool GOPStart() const { return m_GOPStart; }
699 // Sets the MPEG GOP 'closed' attribute for the frame buffer.
700 inline void ClosedGOP(bool closed) { m_ClosedGOP = closed; }
702 // Returns true if the frame in the buffer is from a closed GOP, false if
703 // the frame is from an open GOP. Always returns false unless GOPStart()
705 inline bool ClosedGOP() const { return m_ClosedGOP; }
707 // Print object state to stream, include n bytes of frame data if indicated.
708 // Default stream is stderr.
709 void Dump(FILE* = 0, ui32_t dump_len = 0) const;
713 // An object which opens and reads an MPEG2 Video Elementary Stream file. The call to
714 // OpenRead() reads metadata from the file and populates an internal VideoDescriptor object.
715 // Each subsequent call to ReadFrame() reads exactly one frame from the stream into the
716 // given FrameBuffer object.
720 mem_ptr<h__Parser> m_Parser;
721 ASDCP_NO_COPY_CONSTRUCT(Parser);
727 // Opens the stream for reading, parses enough data to provide a complete
728 // set of stream metadata for the MXFWriter below.
729 Result_t OpenRead(const std::string& filename) const;
731 // Fill a VideoDescriptor struct with the values from the file's header.
732 // Returns RESULT_INIT if the file is not open.
733 Result_t FillVideoDescriptor(VideoDescriptor&) const;
735 // Rewind the stream to the beginning.
736 Result_t Reset() const;
738 // Reads the next sequential frame in the input file and places it in the
739 // frame buffer. Fails if the buffer is too small or the stream is empty.
740 // The frame buffer's PlaintextOffset parameter will be set to the first
741 // data byte of the first slice. Set this value to zero if you want
742 // encrypted headers.
743 Result_t ReadFrame(FrameBuffer&) const;
746 // A class which creates and writes MPEG frame data to an AS-DCP format MXF file.
747 // Not yet implemented
751 mem_ptr<h__Writer> m_Writer;
752 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
756 virtual ~MXFWriter();
758 // Warning: direct manipulation of MXF structures can interfere
759 // with the normal operation of the wrapper. Caveat emptor!
760 virtual MXF::OP1aHeader& OP1aHeader();
761 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
762 virtual MXF::RIP& RIP();
764 // Open the file for writing. The file must not exist. Returns error if
765 // the operation cannot be completed or if nonsensical data is discovered
766 // in the essence descriptor.
767 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
768 const VideoDescriptor&, ui32_t HeaderSize = 16384);
770 // Writes a frame of essence to the MXF file. If the optional AESEncContext
771 // argument is present, the essence is encrypted prior to writing.
772 // Fails if the file is not open, is finalized, or an operating system
774 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
776 // Closes the MXF file, writing the index and revised header.
780 // A class which reads MPEG frame data from an AS-DCP format MXF file.
784 mem_ptr<h__Reader> m_Reader;
785 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
789 virtual ~MXFReader();
791 // Warning: direct manipulation of MXF structures can interfere
792 // with the normal operation of the wrapper. Caveat emptor!
793 virtual MXF::OP1aHeader& OP1aHeader();
794 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
795 virtual MXF::RIP& RIP();
797 // Open the file for reading. The file must exist. Returns error if the
798 // operation cannot be completed.
799 Result_t OpenRead(const std::string& filename) const;
801 // Returns RESULT_INIT if the file is not open.
802 Result_t Close() const;
804 // Fill a VideoDescriptor struct with the values from the file's header.
805 // Returns RESULT_INIT if the file is not open.
806 Result_t FillVideoDescriptor(VideoDescriptor&) const;
808 // Fill a WriterInfo struct with the values from the file's header.
809 // Returns RESULT_INIT if the file is not open.
810 Result_t FillWriterInfo(WriterInfo&) const;
812 // Reads a frame of essence from the MXF file. If the optional AESEncContext
813 // argument is present, the essence is decrypted after reading. If the MXF
814 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
815 // will contain the ciphertext frame data. If the HMACContext argument is
816 // not NULL, the HMAC will be calculated (if the file supports it).
817 // Returns RESULT_INIT if the file is not open, failure if the frame number is
818 // out of range, or if optional decrypt or HAMC operations fail.
819 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
821 // Using the index table read from the footer partition, lookup the frame number
822 // and return the offset into the file at which to read that frame of essence.
823 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
825 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
827 // Calculates the first frame in transport order of the GOP in which the requested
828 // frame is located. Calls ReadFrame() to fetch the frame at the calculated position.
829 // Returns RESULT_INIT if the file is not open.
830 Result_t ReadFrameGOPStart(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
832 // Calculates the first frame in transport order of the GOP in which the requested
833 // frame is located. Sets key_frame_number to the number of the frame at the calculated position.
834 // Returns RESULT_INIT if the file is not open.
835 Result_t FindFrameGOPStart(ui32_t frame_number, ui32_t& key_frame_number) const;
837 // Returns the type of the frame at the given position.
838 // Returns RESULT_INIT if the file is not open or RESULT_RANGE if the index is out of range.
839 Result_t FrameType(ui32_t frame_number, FrameType_t&) const;
841 // Print debugging information to stream
842 void DumpHeaderMetadata(FILE* = 0) const;
843 void DumpIndex(FILE* = 0) const;
847 //---------------------------------------------------------------------------------
854 // The default value of the ChannelFormat element of the AudioDescriptor struct
855 // is CF_NONE. If the value is set to one of the other ChannelFormat_t enum
856 // values, the file's Wave Audio Descriptor will contain a Channel Assignment
859 // The channel format should be one of (CF_CFG_1, CF_CFG_2, or CF_CFG_3) for
860 // SMPTE 429-2 files. It should normally be CF_NONE for JPEG Interop files, but
861 // the 429-2 may also be used.
863 enum ChannelFormat_t {
865 CF_CFG_1, // 5.1 with optional HI/VI
866 CF_CFG_2, // 6.1 (5.1 + center surround) with optional HI/VI
867 CF_CFG_3, // 7.1 (SDDS) with optional HI/VI
868 CF_CFG_4, // Wild Track Format
869 CF_CFG_5, // 7.1 DS with optional HI/VI
870 CF_CFG_6, // ST 377-4 (MCA) labels (see also ASDCP::MXF::decode_mca_string)
874 struct AudioDescriptor
876 Rational EditRate; // rate of frame wrapping
877 Rational AudioSamplingRate; // rate of audio sample
879 ui32_t ChannelCount; // number of channels
880 ui32_t QuantizationBits; // number of bits per single-channel sample
881 ui32_t BlockAlign; // number of bytes ber sample, all channels
883 ui32_t LinkedTrackID; //
884 ui32_t ContainerDuration; // number of frames
885 ChannelFormat_t ChannelFormat; // audio channel arrangement
888 // Print AudioDescriptor to std::ostream
889 std::ostream& operator << (std::ostream& strm, const AudioDescriptor& adesc);
890 // Print debugging information to stream (stderr default)
891 void AudioDescriptorDump(const AudioDescriptor&, FILE* = 0);
893 // Returns size in bytes of a single sample of data described by ADesc
894 inline ui32_t CalcSampleSize(const AudioDescriptor& ADesc)
896 return (ADesc.QuantizationBits / 8) * ADesc.ChannelCount;
899 // Returns number of samples per frame of data described by ADesc
900 inline ui32_t CalcSamplesPerFrame(const AudioDescriptor& ADesc)
902 double tmpd = ADesc.AudioSamplingRate.Quotient() / ADesc.EditRate.Quotient();
903 return (ui32_t)ceil(tmpd);
906 // Returns the size in bytes of a frame of data described by ADesc
907 inline ui32_t CalcFrameBufferSize(const AudioDescriptor& ADesc)
909 return CalcSampleSize(ADesc) * CalcSamplesPerFrame(ADesc);
913 class FrameBuffer : public ASDCP::FrameBuffer
917 FrameBuffer(ui32_t size) { Capacity(size); }
918 virtual ~FrameBuffer() {}
920 // Print debugging information to stream (stderr default)
921 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
924 // An object which opens and reads a WAV file. The call to OpenRead() reads metadata from
925 // the file and populates an internal AudioDescriptor object. Each subsequent call to
926 // ReadFrame() reads exactly one frame from the stream into the given FrameBuffer object.
927 // A "frame" is either 2000 or 2002 samples, depending upon the value of PictureRate.
931 mem_ptr<h__WAVParser> m_Parser;
932 ASDCP_NO_COPY_CONSTRUCT(WAVParser);
936 virtual ~WAVParser();
938 // Opens the stream for reading, parses enough data to provide a complete
939 // set of stream metadata for the MXFWriter below. PictureRate controls
940 // ther frame rate for the MXF frame wrapping option.
941 Result_t OpenRead(const std::string& filename, const Rational& PictureRate) const;
943 // Fill an AudioDescriptor struct with the values from the file's header.
944 // Returns RESULT_INIT if the file is not open.
945 Result_t FillAudioDescriptor(AudioDescriptor&) const;
947 // Rewind the stream to the beginning.
948 Result_t Reset() const;
950 // Reads the next sequential frame in the input file and places it in the
951 // frame buffer. Fails if the buffer is too small or the stream is empty.
952 Result_t ReadFrame(FrameBuffer&) const;
954 Result_t Seek(ui32_t frame_number) const;
962 mem_ptr<h__Writer> m_Writer;
963 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
967 virtual ~MXFWriter();
969 // Warning: direct manipulation of MXF structures can interfere
970 // with the normal operation of the wrapper. Caveat emptor!
971 virtual MXF::OP1aHeader& OP1aHeader();
972 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
973 virtual MXF::RIP& RIP();
975 // Open the file for writing. The file must not exist. Returns error if
976 // the operation cannot be completed or if nonsensical data is discovered
977 // in the essence descriptor.
978 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
979 const AudioDescriptor&, ui32_t HeaderSize = 16384);
981 // Writes a frame of essence to the MXF file. If the optional AESEncContext
982 // argument is present, the essence is encrypted prior to writing.
983 // Fails if the file is not open, is finalized, or an operating system
985 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
987 // Closes the MXF file, writing the index and revised header.
995 mem_ptr<h__Reader> m_Reader;
996 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1000 virtual ~MXFReader();
1002 // Warning: direct manipulation of MXF structures can interfere
1003 // with the normal operation of the wrapper. Caveat emptor!
1004 virtual MXF::OP1aHeader& OP1aHeader();
1005 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1006 virtual MXF::RIP& RIP();
1008 // Open the file for reading. The file must exist. Returns error if the
1009 // operation cannot be completed.
1010 Result_t OpenRead(const std::string& filename) const;
1012 // Returns RESULT_INIT if the file is not open.
1013 Result_t Close() const;
1015 // Fill an AudioDescriptor struct with the values from the file's header.
1016 // Returns RESULT_INIT if the file is not open.
1017 Result_t FillAudioDescriptor(AudioDescriptor&) const;
1019 // Fill a WriterInfo struct with the values from the file's header.
1020 // Returns RESULT_INIT if the file is not open.
1021 Result_t FillWriterInfo(WriterInfo&) const;
1023 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1024 // argument is present, the essence is decrypted after reading. If the MXF
1025 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1026 // will contain the ciphertext frame data. If the HMACContext argument is
1027 // not NULL, the HMAC will be calculated (if the file supports it).
1028 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1029 // out of range, or if optional decrypt or HAMC operations fail.
1030 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1032 // Using the index table read from the footer partition, lookup the frame number
1033 // and return the offset into the file at which to read that frame of essence.
1034 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1036 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1038 // Print debugging information to stream
1039 void DumpHeaderMetadata(FILE* = 0) const;
1040 void DumpIndex(FILE* = 0) const;
1044 //---------------------------------------------------------------------------------
1048 const ui32_t MaxComponents = 3;
1049 const ui32_t MaxPrecincts = 32; // ISO 15444-1 Annex A.6.1
1050 const ui32_t MaxDefaults = 256; // made up
1051 const ui8_t MaxCapabilities = 32;
1052 const ui16_t MaxPRFN = 4;
1053 const ui16_t MaxCPFN = 4;
1054 const i8_t NoExtendedCapabilitiesSignaled = -1;
1055 const ui16_t NoPRFSignaled = 0;
1056 const ui16_t NoCPFSignaled = 0;
1059 struct ImageComponent_t // ISO 15444-1 Annex A.5.1
1066 struct CodingStyleDefault_t // ISO 15444-1 Annex A.6.1
1072 ui8_t ProgressionOrder;
1073 ui8_t NumberOfLayers[sizeof(ui16_t)];
1074 ui8_t MultiCompTransform;
1079 ui8_t DecompositionLevels;
1080 ui8_t CodeblockWidth;
1081 ui8_t CodeblockHeight;
1082 ui8_t CodeblockStyle;
1083 ui8_t Transformation;
1084 ui8_t PrecinctSize[MaxPrecincts];
1088 struct QuantizationDefault_t // ISO 15444-1 Annex A.6.4
1091 ui8_t SPqcd[MaxDefaults];
1095 struct ExtendedCapabilities_t // ISO 15444-1 Annex A.5.2
1097 ui32_t Pcap; // Pcap = 0 means that no extended capabilities are required
1098 i8_t N; // Number of Ccap elements, or NoExtendedCapabilitiesSignaled if no Extended Capabilities are signaled
1099 ui16_t Ccap[MaxCapabilities];
1102 struct Profile_t // ISO 15444-1
1104 ui16_t N; // N = NoPRFSignaled means that Profile is signaled through Rsiz exclusively
1105 ui16_t Pprf[MaxPRFN]; // Pprf^i in ISO/IEC 15444-1 corresponds to Pprf[i -1]
1108 struct CorrespondingProfile_t // ISO 15444-1
1110 ui16_t N; // N = NoCPFSignaled means that no corresponding profile is signaled
1111 ui16_t Pcpf[MaxCPFN]; // Pcpf^i in ISO/IEC 15444-1 corresponds to Pcpf[i -1]
1116 struct PictureDescriptor
1119 ui32_t ContainerDuration;
1120 Rational SampleRate;
1122 ui32_t StoredHeight;
1123 Rational AspectRatio;
1134 ImageComponent_t ImageComponents[MaxComponents];
1135 CodingStyleDefault_t CodingStyleDefault;
1136 QuantizationDefault_t QuantizationDefault;
1137 ExtendedCapabilities_t ExtendedCapabilities;
1139 CorrespondingProfile_t CorrespondingProfile;
1142 // Print debugging information to std::ostream
1143 std::ostream& operator << (std::ostream& strm, const PictureDescriptor& pdesc);
1144 // Print debugging information to stream (stderr default)
1145 void PictureDescriptorDump(const PictureDescriptor&, FILE* = 0);
1148 class FrameBuffer : public ASDCP::FrameBuffer
1152 FrameBuffer(ui32_t size) { Capacity(size); }
1153 virtual ~FrameBuffer() {}
1155 // Print debugging information to stream (stderr default)
1156 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1160 // An object which opens and reads a JPEG 2000 codestream file. The file is expected
1161 // to contain exactly one complete frame of picture essence as an unwrapped (raw)
1162 // ISO/IEC 15444 codestream.
1163 class CodestreamParser
1165 class h__CodestreamParser;
1166 mem_ptr<h__CodestreamParser> m_Parser;
1167 ASDCP_NO_COPY_CONSTRUCT(CodestreamParser);
1171 virtual ~CodestreamParser();
1173 // Opens a file for reading, parses enough data to provide a complete
1174 // set of stream metadata for the MXFWriter below.
1175 // The frame buffer's PlaintextOffset parameter will be set to the first
1176 // byte of the data segment. Set this value to zero if you want
1177 // encrypted headers.
1178 Result_t OpenReadFrame(const std::string& filename, FrameBuffer&) const;
1180 // Fill a PictureDescriptor struct with the values from the file's codestream.
1181 // Returns RESULT_INIT if the file is not open.
1182 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1185 // Parses the data in the frame buffer to fill in the picture descriptor. Copies
1186 // the offset of the image data into start_of_data. Returns error if the parser fails.
1187 Result_t ParseMetadataIntoDesc(const FrameBuffer&, PictureDescriptor&, byte_t* start_of_data = 0);
1189 // An object which reads a sequence of files containing JPEG 2000 pictures.
1190 class SequenceParser
1192 class h__SequenceParser;
1193 mem_ptr<h__SequenceParser> m_Parser;
1194 ASDCP_NO_COPY_CONSTRUCT(SequenceParser);
1198 virtual ~SequenceParser();
1200 // Opens a directory for reading. The directory is expected to contain one or
1201 // more files, each containing the codestream for exactly one picture. The
1202 // files must be named such that the frames are in temporal order when sorted
1203 // alphabetically by filename. The parser will automatically parse enough data
1204 // from the first file to provide a complete set of stream metadata for the
1205 // MXFWriter below. If the "pedantic" parameter is given and is true, the
1206 // parser will check the metadata for each codestream and fail if a
1207 // mismatch is detected.
1208 Result_t OpenRead(const std::string& filename, bool pedantic = false) const;
1210 // Opens a file sequence for reading. The sequence is expected to contain one or
1211 // more filenames, each naming a file containing the codestream for exactly one
1212 // picture. The parser will automatically parse enough data
1213 // from the first file to provide a complete set of stream metadata for the
1214 // MXFWriter below. If the "pedantic" parameter is given and is true, the
1215 // parser will check the metadata for each codestream and fail if a
1216 // mismatch is detected.
1217 Result_t OpenRead(const std::list<std::string>& file_list, bool pedantic = false) const;
1219 // Fill a PictureDescriptor struct with the values from the first file's codestream.
1220 // Returns RESULT_INIT if the directory is not open.
1221 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1223 // Rewind the directory to the beginning.
1224 Result_t Reset() const;
1226 // Reads the next sequential frame in the directory and places it in the
1227 // frame buffer. Fails if the buffer is too small or the direcdtory
1228 // contains no more files.
1229 // The frame buffer's PlaintextOffset parameter will be set to the first
1230 // byte of the data segment. Set this value to zero if you want
1231 // encrypted headers.
1232 Result_t ReadFrame(FrameBuffer&) const;
1240 mem_ptr<h__Writer> m_Writer;
1241 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1245 virtual ~MXFWriter();
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 writing. The file must not exist. Returns error if
1254 // the operation cannot be completed or if nonsensical data is discovered
1255 // in the essence descriptor.
1256 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1257 const PictureDescriptor&, ui32_t HeaderSize = 16384);
1259 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1260 // argument is present, the essence is encrypted prior to writing.
1261 // Fails if the file is not open, is finalized, or an operating system
1263 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1265 // Closes the MXF file, writing the index and revised header.
1266 Result_t Finalize();
1273 mem_ptr<h__Reader> m_Reader;
1274 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1278 virtual ~MXFReader();
1280 // Warning: direct manipulation of MXF structures can interfere
1281 // with the normal operation of the wrapper. Caveat emptor!
1282 virtual MXF::OP1aHeader& OP1aHeader();
1283 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1284 virtual MXF::RIP& RIP();
1286 // Open the file for reading. The file must exist. Returns error if the
1287 // operation cannot be completed.
1288 Result_t OpenRead(const std::string& filename) const;
1290 // Returns RESULT_INIT if the file is not open.
1291 Result_t Close() const;
1293 // Fill an AudioDescriptor struct with the values from the file's header.
1294 // Returns RESULT_INIT if the file is not open.
1295 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1297 // Fill a WriterInfo struct with the values from the file's header.
1298 // Returns RESULT_INIT if the file is not open.
1299 Result_t FillWriterInfo(WriterInfo&) const;
1301 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1302 // argument is present, the essence is decrypted after reading. If the MXF
1303 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1304 // will contain the ciphertext frame data. If the HMACContext argument is
1305 // not NULL, the HMAC will be calculated (if the file supports it).
1306 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1307 // out of range, or if optional decrypt or HAMC operations fail.
1308 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1310 // Using the index table read from the footer partition, lookup the frame number
1311 // and return the offset into the file at which to read that frame of essence.
1312 // Returns RESULT_INIT if the file is not open, and RESULT_FRAME if the frame number is
1314 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1316 // Print debugging information to stream
1317 void DumpHeaderMetadata(FILE* = 0) const;
1318 void DumpIndex(FILE* = 0) const;
1322 // Stereoscopic Image support
1325 enum StereoscopicPhase_t
1333 JP2K::FrameBuffer Left;
1334 JP2K::FrameBuffer Right;
1336 SFrameBuffer(ui32_t size) {
1337 Left.Capacity(size);
1338 Right.Capacity(size);
1345 mem_ptr<h__SWriter> m_Writer;
1346 ASDCP_NO_COPY_CONSTRUCT(MXFSWriter);
1350 virtual ~MXFSWriter();
1352 // Warning: direct manipulation of MXF structures can interfere
1353 // with the normal operation of the wrapper. Caveat emptor!
1354 virtual MXF::OP1aHeader& OP1aHeader();
1355 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1356 virtual MXF::RIP& RIP();
1358 // Open the file for writing. The file must not exist. Returns error if
1359 // the operation cannot be completed or if nonsensical data is discovered
1360 // in the essence descriptor.
1361 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1362 const PictureDescriptor&, ui32_t HeaderSize = 16384);
1364 // Writes a pair of frames of essence to the MXF file. If the optional AESEncContext
1365 // argument is present, the essence is encrypted prior to writing.
1366 // Fails if the file is not open, is finalized, or an operating system
1368 Result_t WriteFrame(const SFrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1370 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1371 // argument is present, the essence is encrypted prior to writing.
1372 // Fails if the file is not open, is finalized, or an operating system
1373 // error occurs. Frames must be written in the proper phase (L-R-L-R),
1374 // RESULT_SPHASE will be returned if phase is reversed. The first frame
1375 // written must be left eye.
1376 Result_t WriteFrame(const FrameBuffer&, StereoscopicPhase_t phase,
1377 AESEncContext* = 0, HMACContext* = 0);
1379 // Closes the MXF file, writing the index and revised header. Returns
1380 // RESULT_SPHASE if WriteFrame was called an odd number of times.
1381 Result_t Finalize();
1388 mem_ptr<h__SReader> m_Reader;
1389 ASDCP_NO_COPY_CONSTRUCT(MXFSReader);
1393 virtual ~MXFSReader();
1395 // Warning: direct manipulation of MXF structures can interfere
1396 // with the normal operation of the wrapper. Caveat emptor!
1397 virtual MXF::OP1aHeader& OP1aHeader();
1398 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1399 virtual MXF::RIP& RIP();
1401 // Open the file for reading. The file must exist. Returns error if the
1402 // operation cannot be completed.
1403 Result_t OpenRead(const std::string& filename) const;
1405 // Returns RESULT_INIT if the file is not open.
1406 Result_t Close() const;
1408 // Fill an AudioDescriptor struct with the values from the file's header.
1409 // Returns RESULT_INIT if the file is not open.
1410 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1412 // Fill a WriterInfo struct with the values from the file's header.
1413 // Returns RESULT_INIT if the file is not open.
1414 Result_t FillWriterInfo(WriterInfo&) const;
1416 // Reads a pair of frames of essence from the MXF file. If the optional AESEncContext
1417 // argument is present, the essence is decrypted after reading. If the MXF
1418 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1419 // will contain the ciphertext frame data. If the HMACContext argument is
1420 // not NULL, the HMAC will be calculated (if the file supports it).
1421 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1422 // out of range, or if optional decrypt or HAMC operations fail.
1423 Result_t ReadFrame(ui32_t frame_number, SFrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1425 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1426 // argument is present, the essence is decrypted after reading. If the MXF
1427 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1428 // will contain the ciphertext frame data. If the HMACContext argument is
1429 // not NULL, the HMAC will be calculated (if the file supports it).
1430 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1431 // out of range, or if optional decrypt or HAMC operations fail.
1432 Result_t ReadFrame(ui32_t frame_number, StereoscopicPhase_t phase,
1433 FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1435 // Using the index table read from the footer partition, lookup the frame number
1436 // and return the offset into the file at which to read that frame of essence.
1437 // Returns RESULT_INIT if the file is not open, and RESULT_FRAME if the frame number is
1439 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1441 // Print debugging information to stream
1442 void DumpHeaderMetadata(FILE* = 0) const;
1443 void DumpIndex(FILE* = 0) const;
1447 //---------------------------------------------------------------------------------
1451 enum MIMEType_t { MT_BIN, MT_PNG, MT_OPENTYPE };
1453 struct TimedTextResourceDescriptor
1455 byte_t ResourceID[UUIDlen];
1458 TimedTextResourceDescriptor() : Type(MT_BIN) {}
1461 typedef std::list<TimedTextResourceDescriptor> ResourceList_t;
1463 struct TimedTextDescriptor
1465 Rational EditRate; //
1466 ui32_t ContainerDuration;
1467 byte_t AssetID[UUIDlen];
1468 std::string NamespaceName;
1469 std::string EncodingName;
1470 ResourceList_t ResourceList;
1472 TimedTextDescriptor() : ContainerDuration(0), EncodingName("UTF-8") {} // D-Cinema format is always UTF-8
1475 // Print debugging information to std::ostream
1476 std::ostream& operator << (std::ostream& strm, const TimedTextDescriptor& tinfo);
1477 // Print debugging information to stream (stderr default)
1478 void DescriptorDump(const TimedTextDescriptor&, FILE* = 0);
1481 class FrameBuffer : public ASDCP::FrameBuffer
1483 ASDCP_NO_COPY_CONSTRUCT(FrameBuffer); // TODO: should have copy construct
1486 byte_t m_AssetID[UUIDlen];
1487 std::string m_MIMEType;
1490 FrameBuffer() { memset(m_AssetID, 0, UUIDlen); }
1491 FrameBuffer(ui32_t size) { Capacity(size); memset(m_AssetID, 0, UUIDlen); }
1492 virtual ~FrameBuffer() {}
1494 inline const byte_t* AssetID() const { return m_AssetID; }
1495 inline void AssetID(const byte_t* buf) { memcpy(m_AssetID, buf, UUIDlen); }
1496 inline const char* MIMEType() const { return m_MIMEType.c_str(); }
1497 inline void MIMEType(const std::string& s) { m_MIMEType = s; }
1499 // Print debugging information to stream (stderr default)
1500 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1503 // An abstract base for a lookup service that returns the resource data
1504 // identified by the given ancillary resource id.
1506 class IResourceResolver
1509 virtual ~IResourceResolver() {}
1510 virtual Result_t ResolveRID(const byte_t* uuid, FrameBuffer&) const = 0; // return data for RID
1513 // Resolves resource references by testing the named directory for file names containing
1514 // the respective UUID.
1516 class LocalFilenameResolver : public ASDCP::TimedText::IResourceResolver
1518 std::string m_Dirname;
1519 ASDCP_NO_COPY_CONSTRUCT(LocalFilenameResolver);
1522 LocalFilenameResolver();
1523 virtual ~LocalFilenameResolver();
1524 Result_t OpenRead(const std::string& dirname);
1525 Result_t ResolveRID(const byte_t* uuid, FrameBuffer& FrameBuf) const;
1529 class DCSubtitleParser
1531 class h__SubtitleParser;
1532 mem_ptr<h__SubtitleParser> m_Parser;
1533 ASDCP_NO_COPY_CONSTRUCT(DCSubtitleParser);
1537 virtual ~DCSubtitleParser();
1539 // Opens an XML file for reading, parses data to provide a complete
1540 // set of stream metadata for the MXFWriter below.
1541 Result_t OpenRead(const std::string& filename) const;
1543 // Parses an XML document to provide a complete set of stream metadata
1544 // for the MXFWriter below. The optional filename argument is used to
1545 // initialize the default resource resolver (see ReadAncillaryResource).
1546 Result_t OpenRead(const std::string& xml_doc, const std::string& filename) const;
1548 // Fill a TimedTextDescriptor struct with the values from the file's contents.
1549 // Returns RESULT_INIT if the file is not open.
1550 Result_t FillTimedTextDescriptor(TimedTextDescriptor&) const;
1552 // Reads the complete Timed Text Resource into the given string.
1553 Result_t ReadTimedTextResource(std::string&) const;
1555 // Reads the Ancillary Resource having the given ID. Fails if the buffer
1556 // is too small or the resource does not exist. The optional Resolver
1557 // argument can be provided which will be used to retrieve the resource
1558 // having a particulat UUID. If a Resolver is not supplied, the default
1559 // internal resolver will return the contents of the file having the UUID
1560 // as the filename. The filename must exist in the same directory as the
1561 // XML file opened with OpenRead().
1562 Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&,
1563 const IResourceResolver* Resolver = 0) const;
1570 mem_ptr<h__Writer> m_Writer;
1571 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1575 virtual ~MXFWriter();
1577 // Warning: direct manipulation of MXF structures can interfere
1578 // with the normal operation of the wrapper. Caveat emptor!
1579 virtual MXF::OP1aHeader& OP1aHeader();
1580 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1581 virtual MXF::RIP& RIP();
1583 // Open the file for writing. The file must not exist. Returns error if
1584 // the operation cannot be completed or if nonsensical data is discovered
1585 // in the essence descriptor.
1586 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1587 const TimedTextDescriptor&, ui32_t HeaderSize = 16384);
1589 // Writes the Timed-Text Resource to the MXF file. The file must be UTF-8
1590 // encoded. If the optional AESEncContext argument is present, the essence
1591 // is encrypted prior to writing. Fails if the file is not open, is finalized,
1592 // or an operating system error occurs.
1593 // This method may only be called once, and it must be called before any
1594 // call to WriteAncillaryResource(). RESULT_STATE will be returned if these
1595 // conditions are not met.
1596 Result_t WriteTimedTextResource(const std::string& XMLDoc, AESEncContext* = 0, HMACContext* = 0);
1598 // Writes an Ancillary Resource to the MXF file. If the optional AESEncContext
1599 // argument is present, the essence is encrypted prior to writing.
1600 // Fails if the file is not open, is finalized, or an operating system
1601 // error occurs. RESULT_STATE will be returned if the method is called before
1602 // WriteTimedTextResource()
1603 Result_t WriteAncillaryResource(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1605 // Closes the MXF file, writing the index and revised header.
1606 Result_t Finalize();
1613 mem_ptr<h__Reader> m_Reader;
1614 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1618 virtual ~MXFReader();
1620 // Warning: direct manipulation of MXF structures can interfere
1621 // with the normal operation of the wrapper. Caveat emptor!
1622 virtual MXF::OP1aHeader& OP1aHeader();
1623 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1624 virtual MXF::RIP& RIP();
1626 // Open the file for reading. The file must exist. Returns error if the
1627 // operation cannot be completed.
1628 Result_t OpenRead(const std::string& filename) const;
1630 // Returns RESULT_INIT if the file is not open.
1631 Result_t Close() const;
1633 // Fill a TimedTextDescriptor struct with the values from the file's header.
1634 // Returns RESULT_INIT if the file is not open.
1635 Result_t FillTimedTextDescriptor(TimedTextDescriptor&) const;
1637 // Fill a WriterInfo struct with the values from the file's header.
1638 // Returns RESULT_INIT if the file is not open.
1639 Result_t FillWriterInfo(WriterInfo&) const;
1641 // Reads the complete Timed Text Resource into the given string. Fails if the resource
1642 // is encrypted and AESDecContext is NULL (use the following method to retrieve the
1643 // raw ciphertet block).
1644 Result_t ReadTimedTextResource(std::string&, AESDecContext* = 0, HMACContext* = 0) const;
1646 // Reads the complete Timed Text Resource from the MXF file. If the optional AESEncContext
1647 // argument is present, the resource is decrypted after reading. If the MXF
1648 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1649 // will contain the ciphertext frame data. If the HMACContext argument is
1650 // not NULL, the HMAC will be calculated (if the file supports it).
1651 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1652 // out of range, or if optional decrypt or HAMC operations fail.
1653 Result_t ReadTimedTextResource(FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1655 // Reads the timed-text resource having the given UUID from the MXF file. If the
1656 // optional AESEncContext argument is present, the resource is decrypted after
1657 // reading. If the MXF file is encrypted and the AESDecContext argument is NULL,
1658 // the frame buffer will contain the ciphertext frame data. If the HMACContext
1659 // argument is not NULL, the HMAC will be calculated (if the file supports it).
1660 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1661 // out of range, or if optional decrypt or HAMC operations fail.
1662 Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1664 // Print debugging information to stream
1665 void DumpHeaderMetadata(FILE* = 0) const;
1666 void DumpIndex(FILE* = 0) const;
1668 } // namespace TimedText
1670 //---------------------------------------------------------------------------------
1674 struct DCDataDescriptor
1676 Rational EditRate; // Sample rate
1677 ui32_t ContainerDuration; // number of frames
1678 byte_t AssetID[UUIDlen]; // The UUID for the DCData track
1679 byte_t DataEssenceCoding[UUIDlen]; // The coding for the data carried
1682 // Print DCDataDescriptor to std::ostream
1683 std::ostream& operator << (std::ostream& strm, const DCDataDescriptor& ddesc);
1684 // Print debugging information to stream (stderr default)
1685 void DCDataDescriptorDump(const DCDataDescriptor&, FILE* = 0);
1688 class FrameBuffer : public ASDCP::FrameBuffer
1692 FrameBuffer(ui32_t size) { Capacity(size); }
1693 virtual ~FrameBuffer() {}
1695 // Print debugging information to stream (stderr default)
1696 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1699 // An object which opens and reads a DC Data file. The file is expected
1700 // to contain exactly one complete frame of DC data essence as an unwrapped (raw)
1702 class BytestreamParser
1704 class h__BytestreamParser;
1705 mem_ptr<h__BytestreamParser> m_Parser;
1706 ASDCP_NO_COPY_CONSTRUCT(BytestreamParser);
1710 virtual ~BytestreamParser();
1712 // Opens a file for reading, parses enough data to provide a complete
1713 // set of stream metadata for the MXFWriter below.
1714 // The frame buffer's PlaintextOffset parameter will be set to the first
1715 // byte of the data segment. Set this value to zero if you want
1716 // encrypted headers.
1717 Result_t OpenReadFrame(const std::string& filename, FrameBuffer&) const;
1719 // Fill a DCDataDescriptor struct with the values from the file's bytestream.
1720 // Returns RESULT_INIT if the file is not open.
1721 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1724 // An object which reads a sequence of files containing DC Data.
1725 class SequenceParser
1727 class h__SequenceParser;
1728 mem_ptr<h__SequenceParser> m_Parser;
1729 ASDCP_NO_COPY_CONSTRUCT(SequenceParser);
1733 virtual ~SequenceParser();
1735 // Opens a directory for reading. The directory is expected to contain one or
1736 // more files, each containing the bytestream for exactly one frame. The files
1737 // must be named such that the frames are in temporal order when sorted
1738 // alphabetically by filename.
1739 Result_t OpenRead(const std::string& filename) const;
1741 // Opens a file sequence for reading. The sequence is expected to contain one or
1742 // more filenames, each naming a file containing the bytestream for exactly one
1744 Result_t OpenRead(const std::list<std::string>& file_list) const;
1746 // Fill a DCDataDescriptor struct with default values.
1747 // Returns RESULT_INIT if the directory is not open.
1748 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1750 // Rewind the directory to the beginning.
1751 Result_t Reset() const;
1753 // Reads the next sequential frame in the directory and places it in the
1754 // frame buffer. Fails if the buffer is too small or the direcdtory
1755 // contains no more files.
1756 // The frame buffer's PlaintextOffset parameter will be set to the first
1757 // byte of the data segment. Set this value to zero if you want
1758 // encrypted headers.
1759 Result_t ReadFrame(FrameBuffer&) const;
1766 mem_ptr<h__Writer> m_Writer;
1767 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1771 virtual ~MXFWriter();
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 writing. The file must not exist. Returns error if
1780 // the operation cannot be completed or if nonsensical data is discovered
1781 // in the essence descriptor.
1782 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1783 const DCDataDescriptor&, ui32_t HeaderSize = 16384);
1785 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1786 // argument is present, the essence is encrypted prior to writing.
1787 // Fails if the file is not open, is finalized, or an operating system
1789 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1791 // Closes the MXF file, writing the index and revised header.
1792 Result_t Finalize();
1799 mem_ptr<h__Reader> m_Reader;
1800 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1804 virtual ~MXFReader();
1806 // Warning: direct manipulation of MXF structures can interfere
1807 // with the normal operation of the wrapper. Caveat emptor!
1808 virtual MXF::OP1aHeader& OP1aHeader();
1809 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1810 virtual MXF::RIP& RIP();
1812 // Open the file for reading. The file must exist. Returns error if the
1813 // operation cannot be completed.
1814 Result_t OpenRead(const std::string& filename) const;
1816 // Returns RESULT_INIT if the file is not open.
1817 Result_t Close() const;
1819 // Fill a DCDataDescriptor struct with the values from the file's header.
1820 // Returns RESULT_INIT if the file is not open.
1821 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1823 // Fill a WriterInfo struct with the values from the file's header.
1824 // Returns RESULT_INIT if the file is not open.
1825 Result_t FillWriterInfo(WriterInfo&) const;
1827 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1828 // argument is present, the essence is decrypted after reading. If the MXF
1829 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1830 // will contain the ciphertext frame data. If the HMACContext argument is
1831 // not NULL, the HMAC will be calculated (if the file supports it).
1832 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1833 // out of range, or if optional decrypt or HAMC operations fail.
1834 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1836 // Using the index table read from the footer partition, lookup the frame number
1837 // and return the offset into the file at which to read that frame of essence.
1838 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1840 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1842 // Print debugging information to stream
1843 void DumpHeaderMetadata(FILE* = 0) const;
1844 void DumpIndex(FILE* = 0) const;
1847 } // namespace DCData
1849 //---------------------------------------------------------------------------------
1853 struct AtmosDescriptor : public DCData::DCDataDescriptor
1855 ui32_t FirstFrame; // Frame number of the frame to align with the FFOA of the picture track
1856 ui16_t MaxChannelCount; // Max number of channels in bitstream
1857 ui16_t MaxObjectCount; // Max number of objects in bitstream
1858 byte_t AtmosID[UUIDlen]; // UUID of Atmos Project
1859 ui8_t AtmosVersion; // ATMOS Coder Version used to create bitstream
1862 // Print AtmosDescriptor to std::ostream
1863 std::ostream& operator << (std::ostream& strm, const AtmosDescriptor& adesc);
1864 // Print debugging information to stream (stderr default)
1865 void AtmosDescriptorDump(const AtmosDescriptor&, FILE* = 0);
1866 // Determine if a file is a raw atmos file
1867 bool IsDolbyAtmos(const std::string& filename);
1874 mem_ptr<h__Writer> m_Writer;
1875 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1879 virtual ~MXFWriter();
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 writing. The file must not exist. Returns error if
1888 // the operation cannot be completed or if nonsensical data is discovered
1889 // in the essence descriptor.
1890 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1891 const AtmosDescriptor&, ui32_t HeaderSize = 16384);
1893 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1894 // argument is present, the essence is encrypted prior to writing.
1895 // Fails if the file is not open, is finalized, or an operating system
1897 Result_t WriteFrame(const DCData::FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1899 // Closes the MXF file, writing the index and revised header.
1900 Result_t Finalize();
1907 mem_ptr<h__Reader> m_Reader;
1908 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1912 virtual ~MXFReader();
1914 // Warning: direct manipulation of MXF structures can interfere
1915 // with the normal operation of the wrapper. Caveat emptor!
1916 virtual MXF::OP1aHeader& OP1aHeader();
1917 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1918 virtual MXF::RIP& RIP();
1920 // Open the file for reading. The file must exist. Returns error if the
1921 // operation cannot be completed.
1922 Result_t OpenRead(const std::string& filename) const;
1924 // Returns RESULT_INIT if the file is not open.
1925 Result_t Close() const;
1927 // Fill an AtmosDescriptor struct with the values from the file's header.
1928 // Returns RESULT_INIT if the file is not open.
1929 Result_t FillAtmosDescriptor(AtmosDescriptor&) const;
1931 // Fill a WriterInfo struct with the values from the file's header.
1932 // Returns RESULT_INIT if the file is not open.
1933 Result_t FillWriterInfo(WriterInfo&) const;
1935 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1936 // argument is present, the essence is decrypted after reading. If the MXF
1937 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1938 // will contain the ciphertext frame data. If the HMACContext argument is
1939 // not NULL, the HMAC will be calculated (if the file supports it).
1940 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1941 // out of range, or if optional decrypt or HAMC operations fail.
1942 Result_t ReadFrame(ui32_t frame_number, DCData::FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1944 // Using the index table read from the footer partition, lookup the frame number
1945 // and return the offset into the file at which to read that frame of essence.
1946 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1948 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1950 // Print debugging information to stream
1951 void DumpHeaderMetadata(FILE* = 0) const;
1952 void DumpIndex(FILE* = 0) const;
1955 } // namespace ATMOS
1959 } // namespace ASDCP
1962 #endif // _AS_DCP_H_