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 // Fill a PictureDescriptor struct with the values from the file's codestream.
1146 // Returns RESULT_INIT if the file is not open.
1147 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1150 // Parses the data in the frame buffer to fill in the picture descriptor. Copies
1151 // the offset of the image data into start_of_data. Returns error if the parser fails.
1152 Result_t ParseMetadataIntoDesc(const FrameBuffer&, PictureDescriptor&, byte_t* start_of_data = 0);
1154 // An object which reads a sequence of files containing JPEG 2000 pictures.
1155 class SequenceParser
1157 class h__SequenceParser;
1158 mem_ptr<h__SequenceParser> m_Parser;
1159 ASDCP_NO_COPY_CONSTRUCT(SequenceParser);
1163 virtual ~SequenceParser();
1165 // Opens a directory for reading. The directory is expected to contain one or
1166 // more files, each containing the codestream for exactly one picture. The
1167 // files must be named such that the frames are in temporal order when sorted
1168 // alphabetically by filename. The parser will automatically parse enough data
1169 // from the first file to provide a complete set of stream metadata for the
1170 // MXFWriter below. If the "pedantic" parameter is given and is true, the
1171 // parser will check the metadata for each codestream and fail if a
1172 // mismatch is detected.
1173 Result_t OpenRead(const std::string& filename, bool pedantic = false) const;
1175 // Opens a file sequence for reading. The sequence is expected to contain one or
1176 // more filenames, each naming a file containing the codestream for exactly one
1177 // picture. The parser will automatically parse enough data
1178 // from the first file to provide a complete set of stream metadata for the
1179 // MXFWriter below. If the "pedantic" parameter is given and is true, the
1180 // parser will check the metadata for each codestream and fail if a
1181 // mismatch is detected.
1182 Result_t OpenRead(const std::list<std::string>& file_list, bool pedantic = false) const;
1184 // Fill a PictureDescriptor struct with the values from the first file's codestream.
1185 // Returns RESULT_INIT if the directory is not open.
1186 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1188 // Rewind the directory to the beginning.
1189 Result_t Reset() const;
1191 // Reads the next sequential frame in the directory and places it in the
1192 // frame buffer. Fails if the buffer is too small or the direcdtory
1193 // contains no more files.
1194 // The frame buffer's PlaintextOffset parameter will be set to the first
1195 // byte of the data segment. Set this value to zero if you want
1196 // encrypted headers.
1197 Result_t ReadFrame(FrameBuffer&) const;
1205 mem_ptr<h__Writer> m_Writer;
1206 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1210 virtual ~MXFWriter();
1212 // Warning: direct manipulation of MXF structures can interfere
1213 // with the normal operation of the wrapper. Caveat emptor!
1214 virtual MXF::OP1aHeader& OP1aHeader();
1215 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1216 virtual MXF::RIP& RIP();
1218 // Open the file for writing. The file must not exist. Returns error if
1219 // the operation cannot be completed or if nonsensical data is discovered
1220 // in the essence descriptor.
1221 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1222 const PictureDescriptor&, ui32_t HeaderSize = 16384);
1224 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1225 // argument is present, the essence is encrypted prior to writing.
1226 // Fails if the file is not open, is finalized, or an operating system
1228 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1230 // Closes the MXF file, writing the index and revised header.
1231 Result_t Finalize();
1238 mem_ptr<h__Reader> m_Reader;
1239 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1243 virtual ~MXFReader();
1245 // Warning: direct manipulation of MXF structures can interfere
1246 // with the normal operation of the wrapper. Caveat emptor!
1247 virtual MXF::OP1aHeader& OP1aHeader();
1248 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1249 virtual MXF::RIP& RIP();
1251 // Open the file for reading. The file must exist. Returns error if the
1252 // operation cannot be completed.
1253 Result_t OpenRead(const std::string& filename) const;
1255 // Returns RESULT_INIT if the file is not open.
1256 Result_t Close() const;
1258 // Fill an AudioDescriptor struct with the values from the file's header.
1259 // Returns RESULT_INIT if the file is not open.
1260 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1262 // Fill a WriterInfo struct with the values from the file's header.
1263 // Returns RESULT_INIT if the file is not open.
1264 Result_t FillWriterInfo(WriterInfo&) const;
1266 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1267 // argument is present, the essence is decrypted after reading. If the MXF
1268 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1269 // will contain the ciphertext frame data. If the HMACContext argument is
1270 // not NULL, the HMAC will be calculated (if the file supports it).
1271 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1272 // out of range, or if optional decrypt or HAMC operations fail.
1273 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1275 // Using the index table read from the footer partition, lookup the frame number
1276 // and return the offset into the file at which to read that frame of essence.
1277 // Returns RESULT_INIT if the file is not open, and RESULT_FRAME if the frame number is
1279 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1281 // Print debugging information to stream
1282 void DumpHeaderMetadata(FILE* = 0) const;
1283 void DumpIndex(FILE* = 0) const;
1287 // Stereoscopic Image support
1290 enum StereoscopicPhase_t
1298 JP2K::FrameBuffer Left;
1299 JP2K::FrameBuffer Right;
1301 SFrameBuffer(ui32_t size) {
1302 Left.Capacity(size);
1303 Right.Capacity(size);
1310 mem_ptr<h__SWriter> m_Writer;
1311 ASDCP_NO_COPY_CONSTRUCT(MXFSWriter);
1315 virtual ~MXFSWriter();
1317 // Warning: direct manipulation of MXF structures can interfere
1318 // with the normal operation of the wrapper. Caveat emptor!
1319 virtual MXF::OP1aHeader& OP1aHeader();
1320 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1321 virtual MXF::RIP& RIP();
1323 // Open the file for writing. The file must not exist. Returns error if
1324 // the operation cannot be completed or if nonsensical data is discovered
1325 // in the essence descriptor.
1326 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1327 const PictureDescriptor&, ui32_t HeaderSize = 16384);
1329 // Writes a pair of frames of essence to the MXF file. If the optional AESEncContext
1330 // argument is present, the essence is encrypted prior to writing.
1331 // Fails if the file is not open, is finalized, or an operating system
1333 Result_t WriteFrame(const SFrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1335 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1336 // argument is present, the essence is encrypted prior to writing.
1337 // Fails if the file is not open, is finalized, or an operating system
1338 // error occurs. Frames must be written in the proper phase (L-R-L-R),
1339 // RESULT_SPHASE will be returned if phase is reversed. The first frame
1340 // written must be left eye.
1341 Result_t WriteFrame(const FrameBuffer&, StereoscopicPhase_t phase,
1342 AESEncContext* = 0, HMACContext* = 0);
1344 // Closes the MXF file, writing the index and revised header. Returns
1345 // RESULT_SPHASE if WriteFrame was called an odd number of times.
1346 Result_t Finalize();
1353 mem_ptr<h__SReader> m_Reader;
1354 ASDCP_NO_COPY_CONSTRUCT(MXFSReader);
1358 virtual ~MXFSReader();
1360 // Warning: direct manipulation of MXF structures can interfere
1361 // with the normal operation of the wrapper. Caveat emptor!
1362 virtual MXF::OP1aHeader& OP1aHeader();
1363 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1364 virtual MXF::RIP& RIP();
1366 // Open the file for reading. The file must exist. Returns error if the
1367 // operation cannot be completed.
1368 Result_t OpenRead(const std::string& filename) const;
1370 // Returns RESULT_INIT if the file is not open.
1371 Result_t Close() const;
1373 // Fill an AudioDescriptor struct with the values from the file's header.
1374 // Returns RESULT_INIT if the file is not open.
1375 Result_t FillPictureDescriptor(PictureDescriptor&) const;
1377 // Fill a WriterInfo struct with the values from the file's header.
1378 // Returns RESULT_INIT if the file is not open.
1379 Result_t FillWriterInfo(WriterInfo&) const;
1381 // Reads a pair of frames of essence from the MXF file. If the optional AESEncContext
1382 // argument is present, the essence is decrypted after reading. If the MXF
1383 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1384 // will contain the ciphertext frame data. If the HMACContext argument is
1385 // not NULL, the HMAC will be calculated (if the file supports it).
1386 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1387 // out of range, or if optional decrypt or HAMC operations fail.
1388 Result_t ReadFrame(ui32_t frame_number, SFrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1390 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1391 // argument is present, the essence is decrypted after reading. If the MXF
1392 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1393 // will contain the ciphertext frame data. If the HMACContext argument is
1394 // not NULL, the HMAC will be calculated (if the file supports it).
1395 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1396 // out of range, or if optional decrypt or HAMC operations fail.
1397 Result_t ReadFrame(ui32_t frame_number, StereoscopicPhase_t phase,
1398 FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1400 // Using the index table read from the footer partition, lookup the frame number
1401 // and return the offset into the file at which to read that frame of essence.
1402 // Returns RESULT_INIT if the file is not open, and RESULT_FRAME if the frame number is
1404 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1406 // Print debugging information to stream
1407 void DumpHeaderMetadata(FILE* = 0) const;
1408 void DumpIndex(FILE* = 0) const;
1412 //---------------------------------------------------------------------------------
1416 enum MIMEType_t { MT_BIN, MT_PNG, MT_OPENTYPE };
1418 struct TimedTextResourceDescriptor
1420 byte_t ResourceID[UUIDlen];
1423 TimedTextResourceDescriptor() : Type(MT_BIN) {}
1426 typedef std::list<TimedTextResourceDescriptor> ResourceList_t;
1428 struct TimedTextDescriptor
1430 Rational EditRate; //
1431 ui32_t ContainerDuration;
1432 byte_t AssetID[UUIDlen];
1433 std::string NamespaceName;
1434 std::string EncodingName;
1435 ResourceList_t ResourceList;
1437 TimedTextDescriptor() : ContainerDuration(0), EncodingName("UTF-8") {} // D-Cinema format is always UTF-8
1440 // Print debugging information to std::ostream
1441 std::ostream& operator << (std::ostream& strm, const TimedTextDescriptor& tinfo);
1442 // Print debugging information to stream (stderr default)
1443 void DescriptorDump(const TimedTextDescriptor&, FILE* = 0);
1446 class FrameBuffer : public ASDCP::FrameBuffer
1448 ASDCP_NO_COPY_CONSTRUCT(FrameBuffer); // TODO: should have copy construct
1451 byte_t m_AssetID[UUIDlen];
1452 std::string m_MIMEType;
1455 FrameBuffer() { memset(m_AssetID, 0, UUIDlen); }
1456 FrameBuffer(ui32_t size) { Capacity(size); memset(m_AssetID, 0, UUIDlen); }
1457 virtual ~FrameBuffer() {}
1459 inline const byte_t* AssetID() const { return m_AssetID; }
1460 inline void AssetID(const byte_t* buf) { memcpy(m_AssetID, buf, UUIDlen); }
1461 inline const char* MIMEType() const { return m_MIMEType.c_str(); }
1462 inline void MIMEType(const std::string& s) { m_MIMEType = s; }
1464 // Print debugging information to stream (stderr default)
1465 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1468 // An abstract base for a lookup service that returns the resource data
1469 // identified by the given ancillary resource id.
1471 class IResourceResolver
1474 virtual ~IResourceResolver() {}
1475 virtual Result_t ResolveRID(const byte_t* uuid, FrameBuffer&) const = 0; // return data for RID
1478 // Resolves resource references by testing the named directory for file names containing
1479 // the respective UUID.
1481 class LocalFilenameResolver : public ASDCP::TimedText::IResourceResolver
1483 std::string m_Dirname;
1484 ASDCP_NO_COPY_CONSTRUCT(LocalFilenameResolver);
1487 LocalFilenameResolver();
1488 virtual ~LocalFilenameResolver();
1489 Result_t OpenRead(const std::string& dirname);
1490 Result_t ResolveRID(const byte_t* uuid, FrameBuffer& FrameBuf) const;
1494 class DCSubtitleParser
1496 class h__SubtitleParser;
1497 mem_ptr<h__SubtitleParser> m_Parser;
1498 ASDCP_NO_COPY_CONSTRUCT(DCSubtitleParser);
1502 virtual ~DCSubtitleParser();
1504 // Opens an XML file for reading, parses data to provide a complete
1505 // set of stream metadata for the MXFWriter below.
1506 Result_t OpenRead(const std::string& filename) const;
1508 // Parses an XML document to provide a complete set of stream metadata
1509 // for the MXFWriter below. The optional filename argument is used to
1510 // initialize the default resource resolver (see ReadAncillaryResource).
1511 Result_t OpenRead(const std::string& xml_doc, const std::string& filename) const;
1513 // Fill a TimedTextDescriptor struct with the values from the file's contents.
1514 // Returns RESULT_INIT if the file is not open.
1515 Result_t FillTimedTextDescriptor(TimedTextDescriptor&) const;
1517 // Reads the complete Timed Text Resource into the given string.
1518 Result_t ReadTimedTextResource(std::string&) const;
1520 // Reads the Ancillary Resource having the given ID. Fails if the buffer
1521 // is too small or the resource does not exist. The optional Resolver
1522 // argument can be provided which will be used to retrieve the resource
1523 // having a particulat UUID. If a Resolver is not supplied, the default
1524 // internal resolver will return the contents of the file having the UUID
1525 // as the filename. The filename must exist in the same directory as the
1526 // XML file opened with OpenRead().
1527 Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&,
1528 const IResourceResolver* Resolver = 0) const;
1535 mem_ptr<h__Writer> m_Writer;
1536 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1540 virtual ~MXFWriter();
1542 // Warning: direct manipulation of MXF structures can interfere
1543 // with the normal operation of the wrapper. Caveat emptor!
1544 virtual MXF::OP1aHeader& OP1aHeader();
1545 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1546 virtual MXF::RIP& RIP();
1548 // Open the file for writing. The file must not exist. Returns error if
1549 // the operation cannot be completed or if nonsensical data is discovered
1550 // in the essence descriptor.
1551 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1552 const TimedTextDescriptor&, ui32_t HeaderSize = 16384);
1554 // Writes the Timed-Text Resource to the MXF file. The file must be UTF-8
1555 // encoded. If the optional AESEncContext argument is present, the essence
1556 // is encrypted prior to writing. Fails if the file is not open, is finalized,
1557 // or an operating system error occurs.
1558 // This method may only be called once, and it must be called before any
1559 // call to WriteAncillaryResource(). RESULT_STATE will be returned if these
1560 // conditions are not met.
1561 Result_t WriteTimedTextResource(const std::string& XMLDoc, AESEncContext* = 0, HMACContext* = 0);
1563 // Writes an Ancillary Resource to the MXF file. If the optional AESEncContext
1564 // argument is present, the essence is encrypted prior to writing.
1565 // Fails if the file is not open, is finalized, or an operating system
1566 // error occurs. RESULT_STATE will be returned if the method is called before
1567 // WriteTimedTextResource()
1568 Result_t WriteAncillaryResource(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1570 // Closes the MXF file, writing the index and revised header.
1571 Result_t Finalize();
1578 mem_ptr<h__Reader> m_Reader;
1579 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1583 virtual ~MXFReader();
1585 // Warning: direct manipulation of MXF structures can interfere
1586 // with the normal operation of the wrapper. Caveat emptor!
1587 virtual MXF::OP1aHeader& OP1aHeader();
1588 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1589 virtual MXF::RIP& RIP();
1591 // Open the file for reading. The file must exist. Returns error if the
1592 // operation cannot be completed.
1593 Result_t OpenRead(const std::string& filename) const;
1595 // Returns RESULT_INIT if the file is not open.
1596 Result_t Close() const;
1598 // Fill a TimedTextDescriptor struct with the values from the file's header.
1599 // Returns RESULT_INIT if the file is not open.
1600 Result_t FillTimedTextDescriptor(TimedTextDescriptor&) const;
1602 // Fill a WriterInfo struct with the values from the file's header.
1603 // Returns RESULT_INIT if the file is not open.
1604 Result_t FillWriterInfo(WriterInfo&) const;
1606 // Reads the complete Timed Text Resource into the given string. Fails if the resource
1607 // is encrypted and AESDecContext is NULL (use the following method to retrieve the
1608 // raw ciphertet block).
1609 Result_t ReadTimedTextResource(std::string&, AESDecContext* = 0, HMACContext* = 0) const;
1611 // Reads the complete Timed Text Resource from the MXF file. If the optional AESEncContext
1612 // argument is present, the resource is decrypted after reading. If the MXF
1613 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1614 // will contain the ciphertext frame data. If the HMACContext argument is
1615 // not NULL, the HMAC will be calculated (if the file supports it).
1616 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1617 // out of range, or if optional decrypt or HAMC operations fail.
1618 Result_t ReadTimedTextResource(FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1620 // Reads the timed-text resource having the given UUID from the MXF file. If the
1621 // optional AESEncContext argument is present, the resource is decrypted after
1622 // reading. If the MXF file is encrypted and the AESDecContext argument is NULL,
1623 // the frame buffer will contain the ciphertext frame data. If the HMACContext
1624 // argument is not NULL, the HMAC will be calculated (if the file supports it).
1625 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1626 // out of range, or if optional decrypt or HAMC operations fail.
1627 Result_t ReadAncillaryResource(const byte_t* uuid, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1629 // Print debugging information to stream
1630 void DumpHeaderMetadata(FILE* = 0) const;
1631 void DumpIndex(FILE* = 0) const;
1633 } // namespace TimedText
1635 //---------------------------------------------------------------------------------
1639 struct DCDataDescriptor
1641 Rational EditRate; // Sample rate
1642 ui32_t ContainerDuration; // number of frames
1643 byte_t AssetID[UUIDlen]; // The UUID for the DCData track
1644 byte_t DataEssenceCoding[UUIDlen]; // The coding for the data carried
1647 // Print DCDataDescriptor to std::ostream
1648 std::ostream& operator << (std::ostream& strm, const DCDataDescriptor& ddesc);
1649 // Print debugging information to stream (stderr default)
1650 void DCDataDescriptorDump(const DCDataDescriptor&, FILE* = 0);
1653 class FrameBuffer : public ASDCP::FrameBuffer
1657 FrameBuffer(ui32_t size) { Capacity(size); }
1658 virtual ~FrameBuffer() {}
1660 // Print debugging information to stream (stderr default)
1661 void Dump(FILE* = 0, ui32_t dump_bytes = 0) const;
1664 // An object which opens and reads a DC Data file. The file is expected
1665 // to contain exactly one complete frame of DC data essence as an unwrapped (raw)
1667 class BytestreamParser
1669 class h__BytestreamParser;
1670 mem_ptr<h__BytestreamParser> m_Parser;
1671 ASDCP_NO_COPY_CONSTRUCT(BytestreamParser);
1675 virtual ~BytestreamParser();
1677 // Opens a file for reading, parses enough data to provide a complete
1678 // set of stream metadata for the MXFWriter below.
1679 // The frame buffer's PlaintextOffset parameter will be set to the first
1680 // byte of the data segment. Set this value to zero if you want
1681 // encrypted headers.
1682 Result_t OpenReadFrame(const std::string& filename, FrameBuffer&) const;
1684 // Fill a DCDataDescriptor struct with the values from the file's bytestream.
1685 // Returns RESULT_INIT if the file is not open.
1686 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1689 // An object which reads a sequence of files containing DC Data.
1690 class SequenceParser
1692 class h__SequenceParser;
1693 mem_ptr<h__SequenceParser> m_Parser;
1694 ASDCP_NO_COPY_CONSTRUCT(SequenceParser);
1698 virtual ~SequenceParser();
1700 // Opens a directory for reading. The directory is expected to contain one or
1701 // more files, each containing the bytestream for exactly one frame. The files
1702 // must be named such that the frames are in temporal order when sorted
1703 // alphabetically by filename.
1704 Result_t OpenRead(const std::string& filename) const;
1706 // Opens a file sequence for reading. The sequence is expected to contain one or
1707 // more filenames, each naming a file containing the bytestream for exactly one
1709 Result_t OpenRead(const std::list<std::string>& file_list) const;
1711 // Fill a DCDataDescriptor struct with default values.
1712 // Returns RESULT_INIT if the directory is not open.
1713 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1715 // Rewind the directory to the beginning.
1716 Result_t Reset() const;
1718 // Reads the next sequential frame in the directory and places it in the
1719 // frame buffer. Fails if the buffer is too small or the direcdtory
1720 // contains no more files.
1721 // The frame buffer's PlaintextOffset parameter will be set to the first
1722 // byte of the data segment. Set this value to zero if you want
1723 // encrypted headers.
1724 Result_t ReadFrame(FrameBuffer&) const;
1731 mem_ptr<h__Writer> m_Writer;
1732 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1736 virtual ~MXFWriter();
1738 // Warning: direct manipulation of MXF structures can interfere
1739 // with the normal operation of the wrapper. Caveat emptor!
1740 virtual MXF::OP1aHeader& OP1aHeader();
1741 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1742 virtual MXF::RIP& RIP();
1744 // Open the file for writing. The file must not exist. Returns error if
1745 // the operation cannot be completed or if nonsensical data is discovered
1746 // in the essence descriptor.
1747 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1748 const DCDataDescriptor&, ui32_t HeaderSize = 16384);
1750 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1751 // argument is present, the essence is encrypted prior to writing.
1752 // Fails if the file is not open, is finalized, or an operating system
1754 Result_t WriteFrame(const FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1756 // Closes the MXF file, writing the index and revised header.
1757 Result_t Finalize();
1764 mem_ptr<h__Reader> m_Reader;
1765 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1769 virtual ~MXFReader();
1771 // Warning: direct manipulation of MXF structures can interfere
1772 // with the normal operation of the wrapper. Caveat emptor!
1773 virtual MXF::OP1aHeader& OP1aHeader();
1774 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1775 virtual MXF::RIP& RIP();
1777 // Open the file for reading. The file must exist. Returns error if the
1778 // operation cannot be completed.
1779 Result_t OpenRead(const std::string& filename) const;
1781 // Returns RESULT_INIT if the file is not open.
1782 Result_t Close() const;
1784 // Fill a DCDataDescriptor struct with the values from the file's header.
1785 // Returns RESULT_INIT if the file is not open.
1786 Result_t FillDCDataDescriptor(DCDataDescriptor&) const;
1788 // Fill a WriterInfo struct with the values from the file's header.
1789 // Returns RESULT_INIT if the file is not open.
1790 Result_t FillWriterInfo(WriterInfo&) const;
1792 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1793 // argument is present, the essence is decrypted after reading. If the MXF
1794 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1795 // will contain the ciphertext frame data. If the HMACContext argument is
1796 // not NULL, the HMAC will be calculated (if the file supports it).
1797 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1798 // out of range, or if optional decrypt or HAMC operations fail.
1799 Result_t ReadFrame(ui32_t frame_number, FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1801 // Using the index table read from the footer partition, lookup the frame number
1802 // and return the offset into the file at which to read that frame of essence.
1803 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1805 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1807 // Print debugging information to stream
1808 void DumpHeaderMetadata(FILE* = 0) const;
1809 void DumpIndex(FILE* = 0) const;
1812 } // namespace DCData
1814 //---------------------------------------------------------------------------------
1818 struct AtmosDescriptor : public DCData::DCDataDescriptor
1820 ui32_t FirstFrame; // Frame number of the frame to align with the FFOA of the picture track
1821 ui16_t MaxChannelCount; // Max number of channels in bitstream
1822 ui16_t MaxObjectCount; // Max number of objects in bitstream
1823 byte_t AtmosID[UUIDlen]; // UUID of Atmos Project
1824 ui8_t AtmosVersion; // ATMOS Coder Version used to create bitstream
1827 // Print AtmosDescriptor to std::ostream
1828 std::ostream& operator << (std::ostream& strm, const AtmosDescriptor& adesc);
1829 // Print debugging information to stream (stderr default)
1830 void AtmosDescriptorDump(const AtmosDescriptor&, FILE* = 0);
1831 // Determine if a file is a raw atmos file
1832 bool IsDolbyAtmos(const std::string& filename);
1839 mem_ptr<h__Writer> m_Writer;
1840 ASDCP_NO_COPY_CONSTRUCT(MXFWriter);
1844 virtual ~MXFWriter();
1846 // Warning: direct manipulation of MXF structures can interfere
1847 // with the normal operation of the wrapper. Caveat emptor!
1848 virtual MXF::OP1aHeader& OP1aHeader();
1849 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1850 virtual MXF::RIP& RIP();
1852 // Open the file for writing. The file must not exist. Returns error if
1853 // the operation cannot be completed or if nonsensical data is discovered
1854 // in the essence descriptor.
1855 Result_t OpenWrite(const std::string& filename, const WriterInfo&,
1856 const AtmosDescriptor&, ui32_t HeaderSize = 16384);
1858 // Writes a frame of essence to the MXF file. If the optional AESEncContext
1859 // argument is present, the essence is encrypted prior to writing.
1860 // Fails if the file is not open, is finalized, or an operating system
1862 Result_t WriteFrame(const DCData::FrameBuffer&, AESEncContext* = 0, HMACContext* = 0);
1864 // Closes the MXF file, writing the index and revised header.
1865 Result_t Finalize();
1872 mem_ptr<h__Reader> m_Reader;
1873 ASDCP_NO_COPY_CONSTRUCT(MXFReader);
1877 virtual ~MXFReader();
1879 // Warning: direct manipulation of MXF structures can interfere
1880 // with the normal operation of the wrapper. Caveat emptor!
1881 virtual MXF::OP1aHeader& OP1aHeader();
1882 virtual MXF::OPAtomIndexFooter& OPAtomIndexFooter();
1883 virtual MXF::RIP& RIP();
1885 // Open the file for reading. The file must exist. Returns error if the
1886 // operation cannot be completed.
1887 Result_t OpenRead(const std::string& filename) const;
1889 // Returns RESULT_INIT if the file is not open.
1890 Result_t Close() const;
1892 // Fill an AtmosDescriptor struct with the values from the file's header.
1893 // Returns RESULT_INIT if the file is not open.
1894 Result_t FillAtmosDescriptor(AtmosDescriptor&) const;
1896 // Fill a WriterInfo struct with the values from the file's header.
1897 // Returns RESULT_INIT if the file is not open.
1898 Result_t FillWriterInfo(WriterInfo&) const;
1900 // Reads a frame of essence from the MXF file. If the optional AESEncContext
1901 // argument is present, the essence is decrypted after reading. If the MXF
1902 // file is encrypted and the AESDecContext argument is NULL, the frame buffer
1903 // will contain the ciphertext frame data. If the HMACContext argument is
1904 // not NULL, the HMAC will be calculated (if the file supports it).
1905 // Returns RESULT_INIT if the file is not open, failure if the frame number is
1906 // out of range, or if optional decrypt or HAMC operations fail.
1907 Result_t ReadFrame(ui32_t frame_number, DCData::FrameBuffer&, AESDecContext* = 0, HMACContext* = 0) const;
1909 // Using the index table read from the footer partition, lookup the frame number
1910 // and return the offset into the file at which to read that frame of essence.
1911 // Returns RESULT_INIT if the file is not open, and RESULT_RANGE if the frame number is
1913 Result_t LocateFrame(ui32_t FrameNum, Kumu::fpos_t& streamOffset, i8_t& temporalOffset, i8_t& keyFrameOffset) const;
1915 // Print debugging information to stream
1916 void DumpHeaderMetadata(FILE* = 0) const;
1917 void DumpIndex(FILE* = 0) const;
1920 } // namespace ATMOS
1924 } // namespace ASDCP
1927 #endif // _AS_DCP_H_