4 The asdcplib library is a set of objects that offer
5 simplified access to files conforming to the sound and
6 picture track file formats developed by the SMPTE Working
9 This work was originally funded by Digital Cinema
10 Initiatives, LLC (DCI). Subsequent efforts have been funded
11 by Deluxe Laboratories, Doremi Labs, CineCert LLC, Avica
12 Technology and others.
14 **The asdcplib project was housed on SourceForge. The project
15 has moved to http://www.cinecert.com/asdcplib/
17 The project formerly depended upon the mxflib project. Because
18 of its focus on covering the whole of the MXF specifications,
19 mxflib is considerably larger and more complex that what I
20 require for this application. For this reason I have created
21 a dedicated MXF implementation that is now part of this
22 library. Special thanks to Matt Beard and Oliver Morgan for
23 their great work and support.
25 Thanks also to the members of the SMPTE DC28.20 packaging
26 ad-hoc group and the members of the MXF Interop Initiative
27 for their encouragement and support. Special thanks to
28 Jim Whittlesey and Howard Lukk at DCI for proposing and
29 supporting this project.
34 This library is intended (but of course not limited) for
35 use by developers of commercial D-Cinema products. It is
36 designed to be easily integrated into a wide variety of
37 development environments. Commercial users are strongly
38 urged to use static linking (at least where you use this
39 library) to prevent malicious in-field replacement of
40 critical system modules. This recommendation should be
41 considered wherever Open Source or Free software is being
42 used for applications having non-trivial security
45 The author strives mightily to provide an API that is
46 completely independent of operating system and other
47 library dependencies, and which allows selective replacement
48 of some modules for local needs. Specifically, the essence
49 parsers and OpenSSL crypto functions can be replaced by
50 linking to alternative implementations of the ASDCP::
51 objects which provide those services.
53 AS_DCP.h contains the entire API. You do not need to read
54 any of the other files, except maybe asdcp-test.cpp which
55 contains detailed usage examples of each of the API's
56 services. The KM_* files may be of interest for general
57 development support, but may be ignored if all you want
58 is simple AS-DCP support.
63 GNU make is required to build asdcplib. The makefile will work
64 on win32 systems that have Cygwin and MSVC. Other win32 gmake
65 packages may or may not work depending upon the availability
66 of standard POSIX shell commands. You will need gcc to rebuild
69 OpenSSL is also required. See http://www.openssl.org/
71 If you are building on win32 or a unix with no OpenSSL library
72 support, you will have to also obtain and build OpenSSL. Unpack
73 it into the same parent directory as asdcplib/, and rename (or make
74 a symlink to) the directory as 'openssl':
78 drwxr-xr-x 1 jhurst None 0 Feb 3 16:37 asdcplib
79 drwxr-xr-x 56 jhurst None 0 Feb 2 16:35 openssl
81 To build, type 'make'. There are several test targets but you
82 need to assemble a set of test files to use them.
84 I have tested this build on win32, Linux, OpenBSD and Darwin
85 platforms. Others may work as well.
92 asdcp-test - Writes, reads and verifies AS-DCP (MXF) track files.
94 kmfilegen - Writes and verifies large files using a platform-
95 independent format. Use it to test issues related to large files.
97 kmuuidgen, kmrandgen - generate UUID values and random numbers.
99 wavesplit - Splits a WAVE file into two or more output files. Used
100 to untangle incorrectly-paired DCDM sound files.
102 blackwave - Write a WAVE file full of zeros, Used to make filler
103 tracks (though you would be better off modifying asdcp-test if
104 this is a common use case).
109 Currently, the API documentation is mostly in AS_DCP.h. Read
110 that file for a detailed description of the library's capabilities.
111 Read asdcp-test.cpp for library usage examples. The command-line
112 utilities all respond to -h.
116 2007.03.31 - Bug fixes v.1.1.14
117 o Fixed KeyFrameOffset value in MPEG wrapping to have negative
118 value. This is probably not yet complete for handling all
119 types of GOPs. Please send chunks of MPEG-2 VES that you
120 find which break this. Thanks to Doremi.
121 ** no other file format changes in this release **
122 o Fixed error in RIP interpretation when reading arbitrary (i.e.,
124 o Fixed a memory leak in ASDCP::MXF::OPAtomHeader when used
125 in read mode. Thanks to Mahesh Bajaj for pointing out this
126 bug and the one above.
127 o Removed asserts from KM_fileio, replaced with RESULT_WRITEFAIL
128 return value statements.
129 o Added -s and -p to the makefile install target.
130 o Altered ByteString behavior to use target Length() in copy
131 operations (instead of Capacity()).
132 o Added new Set() method to ByteString.
133 o Fixed a bug in ByteString::Unarchive() that caused the operation
134 to fail when the buffer was smaller than the read (i.e., when
135 Capacity() was called).
136 o Added IdentifierList class to KM_util.
137 o Changed some Error() messages to Debug() in Wav.cpp
138 o Revived jp2k-test.cpp and asdcp-mem-test.cpp (they both had
142 2007.02.15 - Bug fixes v1.1.13
143 o Removed 'VDescObj->SampleRate.Numerator = VDesc.FrameRate;'
144 from MPEG2_VDesc_to_MD() in AS_DCP_MPEG2.cpp, was line 76.
145 o Added KM_TEST_NULL_STR_L() and KM_TEST_NULL_L() macros to
146 KM_log.h. These versions log the location of the null value.
147 Macros are now used in any module that includes KM_log.h.
148 o MPEG2 VES with run of zero values at the head is now OK.
149 o Increased VESHeaderBufSize to 16K.
150 o Added makefile support for local OpenSSL in ../openssl, if
152 o The Kumu::PathIs*() functions now return false if a null or
153 empty string is given (used to be an assert).
154 o Cleaned up the install target in the makefile.
155 o Fixed SMPTE 429-6 HMAC -- FIPS 186-2 implementation was
156 laughably incorrect. Thanks to Doremi for pointing this out.
157 o Removed default parameter to HMACContext::InitKey().
158 o Cleaned up messages and CLI arg handling in asdcp-test.
161 2006.11.19 - Mo better stuff v1.1.12
162 o Changed read-only Result_t accessor methods to const.
163 o Added Base64 (-B) option to kmrandgen.
164 o Removed 16-bit alignment restriction from kmrandgen.
165 o Improved WAV file extraction speed (Thanks to Jim Radford
166 for pointing this out).
167 o Added single-channel split for WAV extraction (asdcp-test -1).
168 o Fixed remainder bug in h__RNG::fill_rand().
171 2006.11.03 - Bug fixes v1.1.11
172 o Increased index table entry list size to 5000.
173 o Added length checking to TLV writer (returns error if TLV
174 payload exceeds 64kB).
175 o Fixed partition header and RIP errors related to 2-partition
176 files (MXF Interop mode).
177 o Added -t option to asdcp-test (SHA-1 digest with Base64 output
179 o Fixed Sub Descriptor reference bug (Thanks to Denis Leconte
180 for dogged determination).
181 o Added directory-of-wav detection to RawEssenceType()
182 o Modified MXF::Partition::AddChildObject() to only generate
183 a UUID if the InstanceID is unset.
184 o Added ComponentMaxRef & ComponentMinRef to RGBAEssenceDescriptor.
186 o Added detection of 2K/4K jp2c, writing correct 4K metadata.
189 2006.10.05 - Bug fixes v1.1.10
190 o Changed RM_RELEASE to RL_RELEASE in MXFTypes.h.
191 o Changed the MXF writer to use RL_RELEASE (was RL_DEVELOPMENT).
192 o Really fixed source reference chain.
193 o Updated JP2K file package label.
194 o Changed location of JPEG2000PictureSubDescriptor in the
195 header (was erroneously before Preface).
196 o Altered LS_MXF_INTEROP to produce 2-partition files.
199 2006.09.25 - Bug fixes v1.1.9
200 o Fixed SourcePackageID value. All files will be 'original',
201 i.e. SourcePackageID will be all zeros. Let me know if you
202 want to set SourcePackageID.
203 o Fixed compiler warnings on some Linux platforms
204 o Fixed the build so that BUILD_DIR is no longer created
206 o Added duration detection to the raw essence parsers. The
207 MPEG parser uses a nasty approximation so don't use it
208 without paying close attention to the result.
209 o Modified PCMParserList to make it more useful as a base
211 o Fixed bugs and re-organized command-line help in asdcp-test
213 o Fixed two-partition file reads.
214 o Fixed Win32 PRNG initialization.
215 o Renamed asdcp-lf-test as kmfilegen.
216 o Added kmrandgen and kmuuidgen.
217 o Added string retrieval mechanism to Result_t.
218 o Refactored Kumu::Identifier and its sub-classes.
219 o Altered Kumu::PathIsFile to return true when the path
220 is a symbolic link (unix only).
221 o Altered Kumu::FileWriter::OpenWrite to use file creation
222 mode 0664 (was 0644) (unix only).
223 o Added Kumu::WriteStringIntoFile() subroutine.
226 2006.04.05 - Bug fixes and new stuff v1.1.7
227 o Fixed a bug in the MPEG parser that caused it to fail when
228 handling start codes spanning buffer boundaries
229 o Added wavesplit and blackwave utility programs
230 o Added support for revised SMPTE HMAC key derivation when
232 o Refactored platform compatibility and general utilities
233 into a new sub-library "Kumu". There are no new build
234 steps or dependencies, but some important things have
236 + Result_t is no longer an enum, it is now a class.
237 Library result codes are now declared as const objects
240 const Kumu::Result_t RESULT_FORMAT (-101, "The file...");
242 The macros ASDCP_SUCCESS and ASDCP_FAILURE still work
243 the same way thanks to an operator overload for type long.
244 See KM_error.h for more information.
245 + The logging interface has been moved out of AS_DCP.h
247 o Some of the command line utilities that were using headers
248 other than AS_DCP.h have been changed to use the Kumu
249 equivalents. If you have code based on those utilities, you
250 will have to update by hand.
251 o Added new types to the EssenceType_t enum.
252 o The guard macro for Win32 code has changed from WIN32 to
256 2006.03.2x - new stuff
257 o Proper handling of stream-id byte of essence UL values
258 o writes 3-partition files, reads 2-part or 3-part
261 2006.03.16 - bug fixes plus
262 o Removed SMPTE_LABELS compile-time option. The reader will now
263 silently accept either SMPTE or MXF Interop labels, the writer
264 can be instructed which to use at runtime. Default is Interop.
265 o Added an AIFF reader. Support is preliminary, it works with the
266 AIFF files I have on hand.
267 o More code refactoring. More to come.
270 2006.03.09 - full read-write
271 o Removed ASDCP_WITHOUT_OPENSSL compile-time option.
272 o Full read/write now working on new MXF library
275 2005.00.00 - A New Hope
276 o The temporary mxf-lite has been removed. MXF files are now
277 managed via the objects in KLV.h, MXFTypes.h MXF.h and
278 Metadata.h. This release does not support writing MXF files.
279 o Fixed a header interpretation error in the Wav parser.
282 2005.00.00 - The Reformation
283 o Removed mxflib as a dependency by forking the necessary
284 functions and placing them in the mxf-lite subdirectory.
285 Please note that the very heavy modifications done here
286 render all comparisson to mxflib code a substantial task.
287 All errors are now mine and users are warned not to bug
288 Oliver or Matt for help with this code. The version of
289 mxflib at the time of the fork was: 0.5.1.3.
292 2005.06.03 - bug fixes v0.10.18
293 o Updated UL batch to include GC UL.
296 2005.05.27 - bug fixes v0.10.17
297 o Un-did essence container and compression descriptor changes.
298 The default build reflects MXF Interop decisions as of 26 May.
299 o Added note about build versions to README (see above).
300 o Added warnings to SMPTE_LABELS builds.
301 o Fixed JP2K essence container label.
304 2005.05.02 - bug fixes v0.10.16
305 o Reorganized internal files, added file reader object, added OS
306 portability header, removed and renamed some files. If you have a
307 patch against previous versions of the source, you should check
309 o Added RGBA attributes to JP2K descriptor.
310 o Changed interface to CodestreamParser.
311 o Added JP2K parser implementation. It is parsing each frame but is
312 not yet being used to populate the descriptor.
313 o Added 48fps option for `asdcp-test -p`.
314 o Added picture rate constants to AS_DCP.h (23.976, 24, 48).
315 o Added sample rate constant to AS_DCP.h (48k).
316 o Changed asdcp-test to encrypt picture headers by default
317 (plaintext offset will be 0), added -E option to allow
321 2005.04.28 - bug fixes v0.9.15
322 o The XML descriptors for the crypto DMS have moved in mxflib to
323 the file DMS_Crypto.xml (they were in DMS_DCPENC.xml). Older
324 installations should update the file from mxflib.
325 o Added Close() and Seek() to ~MyFileWriter(), cleaned up headers
326 o Added UUID generator output mode (-u).
327 o Added -S option to extract PCM essence into stereo wav files
328 o Added more UL testing and conformance checking.
329 o Added macro SMPTE_LABELS which causes the library to be built
330 with SMPTE (as opposed to MXF Interop) labels. This is not
331 set by default, and currently only affects the PCM container
332 label and encrypted element label.
333 o Cleaned up the GNUmakefile test targets, the source files
334 are now named with the TEST_FILE_PREFIX macro.
335 o enabled 23.976-framed PCM (2002 samples per frame)
336 o The size of the asdcp-test frame buffer for picture essence
337 may now be set from the command line (-b). The default is 4MB.
338 o h__Reader::ReadEKLVPacket() now tests the UL (duh) and switches
339 on the value, allowing plaintext and ciphertext frames to
340 be mixed in the file.
341 o Fixed error in UUID generator format.
342 o JP2K files now use the GenericPictureDescriptor to store
343 ContainerDuration and SampleRate. SampleRate is mapped
344 to EditRate in the PictureDescriptor struct. This fixes
345 the second caveat from the 0.8.13 release.
346 o Fxed bug in PCMParserList that was miscalculating the extent
347 of a PCM sample. This bug did not affect API users, it was
348 only present in asdcp-test.
349 o Fixed EditRate on PCM files (was showing sample rate)
350 o Fixed Encrypted Essence Container UL
351 o Fixed BlockAlign value for PCM essence
353 - The following changes were provided by Jeff Loewenguth
355 o Moved the DMS CryptographicFramework entry from the material
356 package to the source package
357 o Fixed erroneous Source Essence Container Label value
358 o Fixed broken sort of JP2K frames in JP2K parser
359 o Added FindFrameGOPStart() method to the MPEG2 MXFReader
360 o Added missing length values for EKLV packets without HMAC
361 o -x with JP2K essence writes to files with 6 digit names
363 o The Key ID may now be specified as an argument to asdcp-test
367 2004.12.30 - bug fixes + wav files v0.8.14
368 o Added WAV file write to asdcp-test (uses mxflib::waveheader_t).
369 o Three-partition files reading properly. adscplib still writes
371 o Changes in the mxflib WAV essence parser API had broken
372 asdcplib's ability to read essence from a WAV file. I have
373 fixed this bug, but at the expense of breaking compatibility
374 with older versions of mxflib. Beware!
375 o Removed redundant (but working) bin-text-bin conversions.
378 2004.12.23 - JPEG 2000 support v0.8.13
379 o Reads/writes JPEG 2000 essence in plaintext and ciphertext
380 with the following caveats:
381 - The Picture Essence Descriptor is empty.
382 - Because there is no essence descriptor, the reader code
383 in asdcp-test has no idea how many frames are in the file
384 and ends with an out-of-bounds frame error. This error
385 is being suppressed in asdcp-test for the current release.
386 o Still broken when reading three-partition files.
389 2004.10.22 - fixes and UL updates v0.7.11
390 WARNING: COMPATIBILITY BREAKPOINT
391 Files created with this and future versions of this library are
392 not compatible with previous versions of this library. As you
393 might suspect, files created with previous versions of this
394 library are not compatible with this and future versions.
396 o h__Reader will now open a three-partitition file (untested)
397 o Moved DMS from Material partition to File partition
398 o Added length fields to appropriate places in EKLV packet
401 2004.10.22 - fixes and UL updates v0.7.10
402 o fixed frame buffer handling of externally allocated buffer,
403 created unit test (asdcp-mem-test)
404 o added operator==() and operator!=() to Rational type
405 o fixed some type-related compiler warnings
406 o asdcp-test -p now works on unwrap
407 o updated some ULs to match documentation (thanks to Arun
409 o canonicalized line endings
412 2004.07.02 - full plaintext + ciphertext read/write v0.6.9
413 o HMAC, plaintext offest and raw ciphertext read supported
414 o back to proper CBR index
415 o MPEG temporal offset working
418 2004.07.01 - plaintext + ciphertext read/write v0.5.8
419 o encryption of MPEG and PCM essence supported with the
422 - no plaintext offest support
423 - no raw ciphertext read support
424 o moved to reflecting the whole KLV triplet in the CBR
425 index (now incompatible with mxflib, still searching
426 for info about what's "right")
427 o awaitng the following fixes/features:
428 - retrieve Temporal Offset from index in MPEG2::Reader
429 - test for correct ULs when reading frame triplets
430 - fix header metadata items for encrypted files
432 - plaintext offest support
433 - raw ciphertext read support
436 2004.06.14 - plaintext read/write w/key generator v0.4.5
437 o Project now uses OpenSSL (tested with 0.9.7d on win32, Linux, Darwin)
438 Use `make ASDCP_WITHOUT_OPENSSL=1` to make plaintext-only version
439 o Accepts interior I frames when parsing MPEG2 VES
440 o Improved error reporting on format errors
441 o Added support for encryption to asdcp-test
442 o Added RNG for asdcp-test (non-production use only, see notes in FortunaRNG.h)
443 o Implemented CBC encrypt, decrypt module
444 o Added partial TemporalOffset retrieval from MPEG2 parser
445 o Fixed win32 binmode bug
448 2004.05.12 - plaintext read/write v0.3.4
449 o Full read/write of plaintext MPEG-2 VES and WAV files
450 (does not yet support mux from or demux to 2 channel pairs)
451 o Builds with autoconf-based mxflib
452 o Added ASDCP_ prefix to macros
453 o Updated documentation, fixed documentation errors
454 o Simplified API for MXF writer setup
455 o Decoupled essence parsers from MXF writers
456 o added raw ciphertext support to FrameBuffer
457 o Cleaned up Get/Set naming confusion
458 o Added missing const qualifiers
461 2004.04.27 - preview release v0.2.1
462 o hasty release for quick review
463 o this release may not build with mxflib using autoconf.
464 o writes plaintext AS-DCP MPEG2 essence files
465 o tested under win32 and linux. FreeBSD and Darwin do not work
468 2004.02.04 - First release (v0.1.1):
469 o asdcp-test is mostly complete. It should correctly provide
470 access to the read and info capabilities of the library.
471 o The MPEG2 reader is functional but not fully tested.
472 o Some file format integrity tests remain to be coded.
473 o The PCM reader is mostly complete, I am having difficulty
474 getting a suitable test file from mxfwrap.
475 o The makefile creates a static library module. The API
476 will cleanly support a DSO (or DLL). Let me know if DSO
477 support is important to you.
478 o Nothing is thread safe. Thread safety was not a requirement
479 in the initial project definition. Thread safety may be added
480 above the mxflib/klvlib level. Let me know if it is important
482 o The files xmldict.xml and types.xml must be in the current
483 directory when the program is run. The files are supplied
484 with mxflib. Runtime location of the files is not currently
485 a project goal. Comments on how best to handle this situation
486 would be appreciated. See AS_DCP.cpp at init_mxf_types()
487 for a more detailed discussion.