From fc9c1727b5b3483ce49c3cb668e8332fb001b8a7 Mon Sep 17 00:00:00 2001 From: Luigi 'Comio' Mantellini Date: Mon, 8 Sep 2008 02:46:13 +0200 Subject: Add support for LZMA uncompression algorithm. Signed-off-by: Luigi 'Comio' Mantellini Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- lib_generic/lzma/LGPL.txt | 502 ++++++++++++++++++++++++++++ lib_generic/lzma/LzmaDecode.c | 584 ++++++++++++++++++++++++++++++++ lib_generic/lzma/LzmaDecode.h | 113 +++++++ lib_generic/lzma/LzmaTools.c | 142 ++++++++ lib_generic/lzma/LzmaTools.h | 35 ++ lib_generic/lzma/LzmaTypes.h | 45 +++ lib_generic/lzma/Makefile | 49 +++ lib_generic/lzma/README.txt | 28 ++ lib_generic/lzma/history.txt | 198 +++++++++++ lib_generic/lzma/import_lzmasdk.sh | 38 +++ lib_generic/lzma/lzma.txt | 663 +++++++++++++++++++++++++++++++++++++ 11 files changed, 2397 insertions(+) create mode 100644 lib_generic/lzma/LGPL.txt create mode 100644 lib_generic/lzma/LzmaDecode.c create mode 100644 lib_generic/lzma/LzmaDecode.h create mode 100644 lib_generic/lzma/LzmaTools.c create mode 100644 lib_generic/lzma/LzmaTools.h create mode 100644 lib_generic/lzma/LzmaTypes.h create mode 100644 lib_generic/lzma/Makefile create mode 100644 lib_generic/lzma/README.txt create mode 100644 lib_generic/lzma/history.txt create mode 100644 lib_generic/lzma/import_lzmasdk.sh create mode 100644 lib_generic/lzma/lzma.txt (limited to 'lib_generic') diff --git a/lib_generic/lzma/LGPL.txt b/lib_generic/lzma/LGPL.txt new file mode 100644 index 0000000..c56f383 --- /dev/null +++ b/lib_generic/lzma/LGPL.txt @@ -0,0 +1,502 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. By contrast, the GNU General Public +Licenses are intended to guarantee your freedom to share and change +free software--to make sure the software is free for all its users. + + This license, the Lesser General Public License, applies to some +specially designated software packages--typically libraries--of the +Free Software Foundation and other authors who decide to use it. You +can use it too, but we suggest you first think carefully about whether +this license or the ordinary General Public License is the better +strategy to use in any particular case, based on the explanations below. + + When we speak of free software, we are referring to freedom of use, +not price. Our General Public Licenses are designed to make sure that +you have the freedom to distribute copies of free software (and charge +for this service if you wish); that you receive source code or can get +it if you want it; that you can change the software and use pieces of +it in new free programs; and that you are informed that you can do +these things. + + To protect your rights, we need to make restrictions that forbid +distributors to deny you these rights or to ask you to surrender these +rights. These restrictions translate to certain responsibilities for +you if you distribute copies of the library or if you modify it. + + For example, if you distribute copies of the library, whether gratis +or for a fee, you must give the recipients all the rights that we gave +you. You must make sure that they, too, receive or can get the source +code. If you link other code with the library, you must provide +complete object files to the recipients, so that they can relink them +with the library after making changes to the library and recompiling +it. And you must show them these terms so they know their rights. + + We protect your rights with a two-step method: (1) we copyright the +library, and (2) we offer you this license, which gives you legal +permission to copy, distribute and/or modify the library. + + To protect each distributor, we want to make it very clear that +there is no warranty for the free library. Also, if the library is +modified by someone else and passed on, the recipients should know +that what they have is not the original version, so that the original +author's reputation will not be affected by problems that might be +introduced by others. + + Finally, software patents pose a constant threat to the existence of +any free program. We wish to make sure that a company cannot +effectively restrict the users of a free program by obtaining a +restrictive license from a patent holder. Therefore, we insist that +any patent license obtained for a version of the library must be +consistent with the full freedom of use specified in this license. + + Most GNU software, including some libraries, is covered by the +ordinary GNU General Public License. This license, the GNU Lesser +General Public License, applies to certain designated libraries, and +is quite different from the ordinary General Public License. We use +this license for certain libraries in order to permit linking those +libraries into non-free programs. + + When a program is linked with a library, whether statically or using +a shared library, the combination of the two is legally speaking a +combined work, a derivative of the original library. The ordinary +General Public License therefore permits such linking only if the +entire combination fits its criteria of freedom. The Lesser General +Public License permits more lax criteria for linking other code with +the library. + + We call this license the "Lesser" General Public License because it +does Less to protect the user's freedom than the ordinary General +Public License. It also provides other free software developers Less +of an advantage over competing non-free programs. These disadvantages +are the reason we use the ordinary General Public License for many +libraries. However, the Lesser license provides advantages in certain +special circumstances. + + For example, on rare occasions, there may be a special need to +encourage the widest possible use of a certain library, so that it becomes +a de-facto standard. To achieve this, non-free programs must be +allowed to use the library. A more frequent case is that a free +library does the same job as widely used non-free libraries. In this +case, there is little to gain by limiting the free library to free +software only, so we use the Lesser General Public License. + + In other cases, permission to use a particular library in non-free +programs enables a greater number of people to use a large body of +free software. For example, permission to use the GNU C Library in +non-free programs enables many more people to use the whole GNU +operating system, as well as its variant, the GNU/Linux operating +system. + + Although the Lesser General Public License is Less protective of the +users' freedom, it does ensure that the user of a program that is +linked with the Library has the freedom and the wherewithal to run +that program using a modified version of the Library. + + The precise terms and conditions for copying, distribution and +modification follow. Pay close attention to the difference between a +"work based on the library" and a "work that uses the library". The +former contains code derived from the library, whereas the latter must +be combined with the library in order to run. + + GNU LESSER GENERAL PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. This License Agreement applies to any software library or other +program which contains a notice placed by the copyright holder or +other authorized party saying it may be distributed under the terms of +this Lesser General Public License (also called "this License"). +Each licensee is addressed as "you". + + A "library" means a collection of software functions and/or data +prepared so as to be conveniently linked with application programs +(which use some of those functions and data) to form executables. + + The "Library", below, refers to any such software library or work +which has been distributed under these terms. A "work based on the +Library" means either the Library or any derivative work under +copyright law: that is to say, a work containing the Library or a +portion of it, either verbatim or with modifications and/or translated +straightforwardly into another language. (Hereinafter, translation is +included without limitation in the term "modification".) + + "Source code" for a work means the preferred form of the work for +making modifications to it. For a library, complete source code means +all the source code for all modules it contains, plus any associated +interface definition files, plus the scripts used to control compilation +and installation of the library. + + Activities other than copying, distribution and modification are not +covered by this License; they are outside its scope. The act of +running a program using the Library is not restricted, and output from +such a program is covered only if its contents constitute a work based +on the Library (independent of the use of the Library in a tool for +writing it). Whether that is true depends on what the Library does +and what the program that uses the Library does. + + 1. You may copy and distribute verbatim copies of the Library's +complete source code as you receive it, in any medium, provided that +you conspicuously and appropriately publish on each copy an +appropriate copyright notice and disclaimer of warranty; keep intact +all the notices that refer to this License and to the absence of any +warranty; and distribute a copy of this License along with the +Library. + + You may charge a fee for the physical act of transferring a copy, +and you may at your option offer warranty protection in exchange for a +fee. + + 2. You may modify your copy or copies of the Library or any portion +of it, thus forming a work based on the Library, and copy and +distribute such modifications or work under the terms of Section 1 +above, provided that you also meet all of these conditions: + + a) The modified work must itself be a software library. + + b) You must cause the files modified to carry prominent notices + stating that you changed the files and the date of any change. + + c) You must cause the whole of the work to be licensed at no + charge to all third parties under the terms of this License. + + d) If a facility in the modified Library refers to a function or a + table of data to be supplied by an application program that uses + the facility, other than as an argument passed when the facility + is invoked, then you must make a good faith effort to ensure that, + in the event an application does not supply such function or + table, the facility still operates, and performs whatever part of + its purpose remains meaningful. + + (For example, a function in a library to compute square roots has + a purpose that is entirely well-defined independent of the + application. Therefore, Subsection 2d requires that any + application-supplied function or table used by this function must + be optional: if the application does not supply it, the square + root function must still compute square roots.) + +These requirements apply to the modified work as a whole. If +identifiable sections of that work are not derived from the Library, +and can be reasonably considered independent and separate works in +themselves, then this License, and its terms, do not apply to those +sections when you distribute them as separate works. But when you +distribute the same sections as part of a whole which is a work based +on the Library, the distribution of the whole must be on the terms of +this License, whose permissions for other licensees extend to the +entire whole, and thus to each and every part regardless of who wrote +it. + +Thus, it is not the intent of this section to claim rights or contest +your rights to work written entirely by you; rather, the intent is to +exercise the right to control the distribution of derivative or +collective works based on the Library. + +In addition, mere aggregation of another work not based on the Library +with the Library (or with a work based on the Library) on a volume of +a storage or distribution medium does not bring the other work under +the scope of this License. + + 3. You may opt to apply the terms of the ordinary GNU General Public +License instead of this License to a given copy of the Library. To do +this, you must alter all the notices that refer to this License, so +that they refer to the ordinary GNU General Public License, version 2, +instead of to this License. (If a newer version than version 2 of the +ordinary GNU General Public License has appeared, then you can specify +that version instead if you wish.) Do not make any other change in +these notices. + + Once this change is made in a given copy, it is irreversible for +that copy, so the ordinary GNU General Public License applies to all +subsequent copies and derivative works made from that copy. + + This option is useful when you wish to copy part of the code of +the Library into a program that is not a library. + + 4. You may copy and distribute the Library (or a portion or +derivative of it, under Section 2) in object code or executable form +under the terms of Sections 1 and 2 above provided that you accompany +it with the complete corresponding machine-readable source code, which +must be distributed under the terms of Sections 1 and 2 above on a +medium customarily used for software interchange. + + If distribution of object code is made by offering access to copy +from a designated place, then offering equivalent access to copy the +source code from the same place satisfies the requirement to +distribute the source code, even though third parties are not +compelled to copy the source along with the object code. + + 5. A program that contains no derivative of any portion of the +Library, but is designed to work with the Library by being compiled or +linked with it, is called a "work that uses the Library". Such a +work, in isolation, is not a derivative work of the Library, and +therefore falls outside the scope of this License. + + However, linking a "work that uses the Library" with the Library +creates an executable that is a derivative of the Library (because it +contains portions of the Library), rather than a "work that uses the +library". The executable is therefore covered by this License. +Section 6 states terms for distribution of such executables. + + When a "work that uses the Library" uses material from a header file +that is part of the Library, the object code for the work may be a +derivative work of the Library even though the source code is not. +Whether this is true is especially significant if the work can be +linked without the Library, or if the work is itself a library. The +threshold for this to be true is not precisely defined by law. + + If such an object file uses only numerical parameters, data +structure layouts and accessors, and small macros and small inline +functions (ten lines or less in length), then the use of the object +file is unrestricted, regardless of whether it is legally a derivative +work. (Executables containing this object code plus portions of the +Library will still fall under Section 6.) + + Otherwise, if the work is a derivative of the Library, you may +distribute the object code for the work under the terms of Section 6. +Any executables containing that work also fall under Section 6, +whether or not they are linked directly with the Library itself. + + 6. As an exception to the Sections above, you may also combine or +link a "work that uses the Library" with the Library to produce a +work containing portions of the Library, and distribute that work +under terms of your choice, provided that the terms permit +modification of the work for the customer's own use and reverse +engineering for debugging such modifications. + + You must give prominent notice with each copy of the work that the +Library is used in it and that the Library and its use are covered by +this License. You must supply a copy of this License. If the work +during execution displays copyright notices, you must include the +copyright notice for the Library among them, as well as a reference +directing the user to the copy of this License. Also, you must do one +of these things: + + a) Accompany the work with the complete corresponding + machine-readable source code for the Library including whatever + changes were used in the work (which must be distributed under + Sections 1 and 2 above); and, if the work is an executable linked + with the Library, with the complete machine-readable "work that + uses the Library", as object code and/or source code, so that the + user can modify the Library and then relink to produce a modified + executable containing the modified Library. (It is understood + that the user who changes the contents of definitions files in the + Library will not necessarily be able to recompile the application + to use the modified definitions.) + + b) Use a suitable shared library mechanism for linking with the + Library. A suitable mechanism is one that (1) uses at run time a + copy of the library already present on the user's computer system, + rather than copying library functions into the executable, and (2) + will operate properly with a modified version of the library, if + the user installs one, as long as the modified version is + interface-compatible with the version that the work was made with. + + c) Accompany the work with a written offer, valid for at + least three years, to give the same user the materials + specified in Subsection 6a, above, for a charge no more + than the cost of performing this distribution. + + d) If distribution of the work is made by offering access to copy + from a designated place, offer equivalent access to copy the above + specified materials from the same place. + + e) Verify that the user has already received a copy of these + materials or that you have already sent this user a copy. + + For an executable, the required form of the "work that uses the +Library" must include any data and utility programs needed for +reproducing the executable from it. However, as a special exception, +the materials to be distributed need not include anything that is +normally distributed (in either source or binary form) with the major +components (compiler, kernel, and so on) of the operating system on +which the executable runs, unless that component itself accompanies +the executable. + + It may happen that this requirement contradicts the license +restrictions of other proprietary libraries that do not normally +accompany the operating system. Such a contradiction means you cannot +use both them and the Library together in an executable that you +distribute. + + 7. You may place library facilities that are a work based on the +Library side-by-side in a single library together with other library +facilities not covered by this License, and distribute such a combined +library, provided that the separate distribution of the work based on +the Library and of the other library facilities is otherwise +permitted, and provided that you do these two things: + + a) Accompany the combined library with a copy of the same work + based on the Library, uncombined with any other library + facilities. This must be distributed under the terms of the + Sections above. + + b) Give prominent notice with the combined library of the fact + that part of it is a work based on the Library, and explaining + where to find the accompanying uncombined form of the same work. + + 8. You may not copy, modify, sublicense, link with, or distribute +the Library except as expressly provided under this License. Any +attempt otherwise to copy, modify, sublicense, link with, or +distribute the Library is void, and will automatically terminate your +rights under this License. However, parties who have received copies, +or rights, from you under this License will not have their licenses +terminated so long as such parties remain in full compliance. + + 9. You are not required to accept this License, since you have not +signed it. However, nothing else grants you permission to modify or +distribute the Library or its derivative works. These actions are +prohibited by law if you do not accept this License. Therefore, by +modifying or distributing the Library (or any work based on the +Library), you indicate your acceptance of this License to do so, and +all its terms and conditions for copying, distributing or modifying +the Library or works based on it. + + 10. Each time you redistribute the Library (or any work based on the +Library), the recipient automatically receives a license from the +original licensor to copy, distribute, link with or modify the Library +subject to these terms and conditions. You may not impose any further +restrictions on the recipients' exercise of the rights granted herein. +You are not responsible for enforcing compliance by third parties with +this License. + + 11. If, as a consequence of a court judgment or allegation of patent +infringement or for any other reason (not limited to patent issues), +conditions are imposed on you (whether by court order, agreement or +otherwise) that contradict the conditions of this License, they do not +excuse you from the conditions of this License. If you cannot +distribute so as to satisfy simultaneously your obligations under this +License and any other pertinent obligations, then as a consequence you +may not distribute the Library at all. For example, if a patent +license would not permit royalty-free redistribution of the Library by +all those who receive copies directly or indirectly through you, then +the only way you could satisfy both it and this License would be to +refrain entirely from distribution of the Library. + +If any portion of this section is held invalid or unenforceable under any +particular circumstance, the balance of the section is intended to apply, +and the section as a whole is intended to apply in other circumstances. + +It is not the purpose of this section to induce you to infringe any +patents or other property right claims or to contest validity of any +such claims; this section has the sole purpose of protecting the +integrity of the free software distribution system which is +implemented by public license practices. Many people have made +generous contributions to the wide range of software distributed +through that system in reliance on consistent application of that +system; it is up to the author/donor to decide if he or she is willing +to distribute software through any other system and a licensee cannot +impose that choice. + +This section is intended to make thoroughly clear what is believed to +be a consequence of the rest of this License. + + 12. If the distribution and/or use of the Library is restricted in +certain countries either by patents or by copyrighted interfaces, the +original copyright holder who places the Library under this License may add +an explicit geographical distribution limitation excluding those countries, +so that distribution is permitted only in or among countries not thus +excluded. In such case, this License incorporates the limitation as if +written in the body of this License. + + 13. The Free Software Foundation may publish revised and/or new +versions of the Lesser General Public License from time to time. +Such new versions will be similar in spirit to the present version, +but may differ in detail to address new problems or concerns. + +Each version is given a distinguishing version number. If the Library +specifies a version number of this License which applies to it and +"any later version", you have the option of following the terms and +conditions either of that version or of any later version published by +the Free Software Foundation. If the Library does not specify a +license version number, you may choose any version ever published by +the Free Software Foundation. + + 14. If you wish to incorporate parts of the Library into other free +programs whose distribution conditions are incompatible with these, +write to the author to ask for permission. For software which is +copyrighted by the Free Software Foundation, write to the Free +Software Foundation; we sometimes make exceptions for this. Our +decision will be guided by the two goals of preserving the free status +of all derivatives of our free software and of promoting the sharing +and reuse of software generally. + + NO WARRANTY + + 15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO +WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. +EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR +OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY +KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE +LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME +THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. + + 16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN +WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY +AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU +FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR +CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE +LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING +RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A +FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF +SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH +DAMAGES. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Libraries + + If you develop a new library, and you want it to be of the greatest +possible use to the public, we recommend making it free software that +everyone can redistribute and change. You can do so by permitting +redistribution under these terms (or, alternatively, under the terms of the +ordinary General Public License). + + To apply these terms, attach the following notices to the library. It is +safest to attach them to the start of each source file to most effectively +convey the exclusion of warranty; and each file should have at least the +"copyright" line and a pointer to where the full notice is found. + + + Copyright (C) + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +Also add information on how to contact you by electronic and paper mail. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the library, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/lib_generic/lzma/LzmaDecode.c b/lib_generic/lzma/LzmaDecode.c new file mode 100644 index 0000000..3470e55 --- /dev/null +++ b/lib_generic/lzma/LzmaDecode.c @@ -0,0 +1,584 @@ +/* + LzmaDecode.c + LZMA Decoder (optimized for Speed version) + + LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01) + http://www.7-zip.org/ + + LZMA SDK is licensed under two licenses: + 1) GNU Lesser General Public License (GNU LGPL) + 2) Common Public License (CPL) + It means that you can select one of these two licenses and + follow rules of that license. + + SPECIAL EXCEPTION: + Igor Pavlov, as the author of this Code, expressly permits you to + statically or dynamically link your Code (or bind by name) to the + interfaces of this file without subjecting your linked Code to the + terms of the CPL or GNU LGPL. Any modifications or additions + to this file, however, are subject to the LGPL or CPL terms. +*/ + +#include "LzmaDecode.h" + +#define kNumTopBits 24 +#define kTopValue ((UInt32)1 << kNumTopBits) + +#define kNumBitModelTotalBits 11 +#define kBitModelTotal (1 << kNumBitModelTotalBits) +#define kNumMoveBits 5 + +#define RC_READ_BYTE (*Buffer++) + +#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \ + { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }} + +#ifdef _LZMA_IN_CB + +#define RC_TEST { if (Buffer == BufferLim) \ + { SizeT size; int result = InCallback->Read(InCallback, &Buffer, &size); if (result != LZMA_RESULT_OK) return result; \ + BufferLim = Buffer + size; if (size == 0) return LZMA_RESULT_DATA_ERROR; }} + +#define RC_INIT Buffer = BufferLim = 0; RC_INIT2 + +#else + +#define RC_TEST { if (Buffer == BufferLim) return LZMA_RESULT_DATA_ERROR; } + +#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2 + +#endif + +#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; } + +#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound) +#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits; +#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits; + +#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \ + { UpdateBit0(p); mi <<= 1; A0; } else \ + { UpdateBit1(p); mi = (mi + mi) + 1; A1; } + +#define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;) + +#define RangeDecoderBitTreeDecode(probs, numLevels, res) \ + { int i = numLevels; res = 1; \ + do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); \ + res -= (1 << numLevels); } + + +#define kNumPosBitsMax 4 +#define kNumPosStatesMax (1 << kNumPosBitsMax) + +#define kLenNumLowBits 3 +#define kLenNumLowSymbols (1 << kLenNumLowBits) +#define kLenNumMidBits 3 +#define kLenNumMidSymbols (1 << kLenNumMidBits) +#define kLenNumHighBits 8 +#define kLenNumHighSymbols (1 << kLenNumHighBits) + +#define LenChoice 0 +#define LenChoice2 (LenChoice + 1) +#define LenLow (LenChoice2 + 1) +#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits)) +#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits)) +#define kNumLenProbs (LenHigh + kLenNumHighSymbols) + + +#define kNumStates 12 +#define kNumLitStates 7 + +#define kStartPosModelIndex 4 +#define kEndPosModelIndex 14 +#define kNumFullDistances (1 << (kEndPosModelIndex >> 1)) + +#define kNumPosSlotBits 6 +#define kNumLenToPosStates 4 + +#define kNumAlignBits 4 +#define kAlignTableSize (1 << kNumAlignBits) + +#define kMatchMinLen 2 + +#define IsMatch 0 +#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax)) +#define IsRepG0 (IsRep + kNumStates) +#define IsRepG1 (IsRepG0 + kNumStates) +#define IsRepG2 (IsRepG1 + kNumStates) +#define IsRep0Long (IsRepG2 + kNumStates) +#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax)) +#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits)) +#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex) +#define LenCoder (Align + kAlignTableSize) +#define RepLenCoder (LenCoder + kNumLenProbs) +#define Literal (RepLenCoder + kNumLenProbs) + +#if Literal != LZMA_BASE_SIZE +StopCompilingDueBUG +#endif + +int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size) +{ + unsigned char prop0; + if (size < LZMA_PROPERTIES_SIZE) + return LZMA_RESULT_DATA_ERROR; + prop0 = propsData[0]; + if (prop0 >= (9 * 5 * 5)) + return LZMA_RESULT_DATA_ERROR; + { + for (propsRes->pb = 0; prop0 >= (9 * 5); propsRes->pb++, prop0 -= (9 * 5)); + for (propsRes->lp = 0; prop0 >= 9; propsRes->lp++, prop0 -= 9); + propsRes->lc = prop0; + /* + unsigned char remainder = (unsigned char)(prop0 / 9); + propsRes->lc = prop0 % 9; + propsRes->pb = remainder / 5; + propsRes->lp = remainder % 5; + */ + } + + #ifdef _LZMA_OUT_READ + { + int i; + propsRes->DictionarySize = 0; + for (i = 0; i < 4; i++) + propsRes->DictionarySize += (UInt32)(propsData[1 + i]) << (i * 8); + if (propsRes->DictionarySize == 0) + propsRes->DictionarySize = 1; + } + #endif + return LZMA_RESULT_OK; +} + +#define kLzmaStreamWasFinishedId (-1) + +int LzmaDecode(CLzmaDecoderState *vs, + #ifdef _LZMA_IN_CB + ILzmaInCallback *InCallback, + #else + const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed, + #endif + unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed) +{ + CProb *p = vs->Probs; + SizeT nowPos = 0; + Byte previousByte = 0; + UInt32 posStateMask = (1 << (vs->Properties.pb)) - 1; + UInt32 literalPosMask = (1 << (vs->Properties.lp)) - 1; + int lc = vs->Properties.lc; + + #ifdef _LZMA_OUT_READ + + UInt32 Range = vs->Range; + UInt32 Code = vs->Code; + #ifdef _LZMA_IN_CB + const Byte *Buffer = vs->Buffer; + const Byte *BufferLim = vs->BufferLim; + #else + const Byte *Buffer = inStream; + const Byte *BufferLim = inStream + inSize; + #endif + int state = vs->State; + UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3]; + int len = vs->RemainLen; + UInt32 globalPos = vs->GlobalPos; + UInt32 distanceLimit = vs->DistanceLimit; + + Byte *dictionary = vs->Dictionary; + UInt32 dictionarySize = vs->Properties.DictionarySize; + UInt32 dictionaryPos = vs->DictionaryPos; + + Byte tempDictionary[4]; + + #ifndef _LZMA_IN_CB + *inSizeProcessed = 0; + #endif + *outSizeProcessed = 0; + if (len == kLzmaStreamWasFinishedId) + return LZMA_RESULT_OK; + + if (dictionarySize == 0) + { + dictionary = tempDictionary; + dictionarySize = 1; + tempDictionary[0] = vs->TempDictionary[0]; + } + + if (len == kLzmaNeedInitId) + { + { + UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp)); + UInt32 i; + for (i = 0; i < numProbs; i++) + p[i] = kBitModelTotal >> 1; + rep0 = rep1 = rep2 = rep3 = 1; + state = 0; + globalPos = 0; + distanceLimit = 0; + dictionaryPos = 0; + dictionary[dictionarySize - 1] = 0; + #ifdef _LZMA_IN_CB + RC_INIT; + #else + RC_INIT(inStream, inSize); + #endif + } + len = 0; + } + while(len != 0 && nowPos < outSize) + { + UInt32 pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos]; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + len--; + } + if (dictionaryPos == 0) + previousByte = dictionary[dictionarySize - 1]; + else + previousByte = dictionary[dictionaryPos - 1]; + + #else /* if !_LZMA_OUT_READ */ + + int state = 0; + UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1; + int len = 0; + const Byte *Buffer; + const Byte *BufferLim; + UInt32 Range; + UInt32 Code; + + #ifndef _LZMA_IN_CB + *inSizeProcessed = 0; + #endif + *outSizeProcessed = 0; + + { + UInt32 i; + UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp)); + for (i = 0; i < numProbs; i++) + p[i] = kBitModelTotal >> 1; + } + + #ifdef _LZMA_IN_CB + RC_INIT; + #else + RC_INIT(inStream, inSize); + #endif + + #endif /* _LZMA_OUT_READ */ + + while(nowPos < outSize) + { + CProb *prob; + UInt32 bound; + int posState = (int)( + (nowPos + #ifdef _LZMA_OUT_READ + + globalPos + #endif + ) + & posStateMask); + + prob = p + IsMatch + (state << kNumPosBitsMax) + posState; + IfBit0(prob) + { + int symbol = 1; + UpdateBit0(prob) + prob = p + Literal + (LZMA_LIT_SIZE * + ((( + (nowPos + #ifdef _LZMA_OUT_READ + + globalPos + #endif + ) + & literalPosMask) << lc) + (previousByte >> (8 - lc)))); + + if (state >= kNumLitStates) + { + int matchByte; + #ifdef _LZMA_OUT_READ + UInt32 pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + matchByte = dictionary[pos]; + #else + matchByte = outStream[nowPos - rep0]; + #endif + do + { + int bit; + CProb *probLit; + matchByte <<= 1; + bit = (matchByte & 0x100); + probLit = prob + 0x100 + bit + symbol; + RC_GET_BIT2(probLit, symbol, if (bit != 0) break, if (bit == 0) break) + } + while (symbol < 0x100); + } + while (symbol < 0x100) + { + CProb *probLit = prob + symbol; + RC_GET_BIT(probLit, symbol) + } + previousByte = (Byte)symbol; + + outStream[nowPos++] = previousByte; + #ifdef _LZMA_OUT_READ + if (distanceLimit < dictionarySize) + distanceLimit++; + + dictionary[dictionaryPos] = previousByte; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + #endif + if (state < 4) state = 0; + else if (state < 10) state -= 3; + else state -= 6; + } + else + { + UpdateBit1(prob); + prob = p + IsRep + state; + IfBit0(prob) + { + UpdateBit0(prob); + rep3 = rep2; + rep2 = rep1; + rep1 = rep0; + state = state < kNumLitStates ? 0 : 3; + prob = p + LenCoder; + } + else + { + UpdateBit1(prob); + prob = p + IsRepG0 + state; + IfBit0(prob) + { + UpdateBit0(prob); + prob = p + IsRep0Long + (state << kNumPosBitsMax) + posState; + IfBit0(prob) + { + #ifdef _LZMA_OUT_READ + UInt32 pos; + #endif + UpdateBit0(prob); + + #ifdef _LZMA_OUT_READ + if (distanceLimit == 0) + #else + if (nowPos == 0) + #endif + return LZMA_RESULT_DATA_ERROR; + + state = state < kNumLitStates ? 9 : 11; + #ifdef _LZMA_OUT_READ + pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + previousByte = dictionary[pos]; + dictionary[dictionaryPos] = previousByte; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + #else + previousByte = outStream[nowPos - rep0]; + #endif + outStream[nowPos++] = previousByte; + #ifdef _LZMA_OUT_READ + if (distanceLimit < dictionarySize) + distanceLimit++; + #endif + + continue; + } + else + { + UpdateBit1(prob); + } + } + else + { + UInt32 distance; + UpdateBit1(prob); + prob = p + IsRepG1 + state; + IfBit0(prob) + { + UpdateBit0(prob); + distance = rep1; + } + else + { + UpdateBit1(prob); + prob = p + IsRepG2 + state; + IfBit0(prob) + { + UpdateBit0(prob); + distance = rep2; + } + else + { + UpdateBit1(prob); + distance = rep3; + rep3 = rep2; + } + rep2 = rep1; + } + rep1 = rep0; + rep0 = distance; + } + state = state < kNumLitStates ? 8 : 11; + prob = p + RepLenCoder; + } + { + int numBits, offset; + CProb *probLen = prob + LenChoice; + IfBit0(probLen) + { + UpdateBit0(probLen); + probLen = prob + LenLow + (posState << kLenNumLowBits); + offset = 0; + numBits = kLenNumLowBits; + } + else + { + UpdateBit1(probLen); + probLen = prob + LenChoice2; + IfBit0(probLen) + { + UpdateBit0(probLen); + probLen = prob + LenMid + (posState << kLenNumMidBits); + offset = kLenNumLowSymbols; + numBits = kLenNumMidBits; + } + else + { + UpdateBit1(probLen); + probLen = prob + LenHigh; + offset = kLenNumLowSymbols + kLenNumMidSymbols; + numBits = kLenNumHighBits; + } + } + RangeDecoderBitTreeDecode(probLen, numBits, len); + len += offset; + } + + if (state < 4) + { + int posSlot; + state += kNumLitStates; + prob = p + PosSlot + + ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) << + kNumPosSlotBits); + RangeDecoderBitTreeDecode(prob, kNumPosSlotBits, posSlot); + if (posSlot >= kStartPosModelIndex) + { + int numDirectBits = ((posSlot >> 1) - 1); + rep0 = (2 | ((UInt32)posSlot & 1)); + if (posSlot < kEndPosModelIndex) + { + rep0 <<= numDirectBits; + prob = p + SpecPos + rep0 - posSlot - 1; + } + else + { + numDirectBits -= kNumAlignBits; + do + { + RC_NORMALIZE + Range >>= 1; + rep0 <<= 1; + if (Code >= Range) + { + Code -= Range; + rep0 |= 1; + } + } + while (--numDirectBits != 0); + prob = p + Align; + rep0 <<= kNumAlignBits; + numDirectBits = kNumAlignBits; + } + { + int i = 1; + int mi = 1; + do + { + CProb *prob3 = prob + mi; + RC_GET_BIT2(prob3, mi, ; , rep0 |= i); + i <<= 1; + } + while(--numDirectBits != 0); + } + } + else + rep0 = posSlot; + if (++rep0 == (UInt32)(0)) + { + /* it's for stream version */ + len = kLzmaStreamWasFinishedId; + break; + } + } + + len += kMatchMinLen; + #ifdef _LZMA_OUT_READ + if (rep0 > distanceLimit) + #else + if (rep0 > nowPos) + #endif + return LZMA_RESULT_DATA_ERROR; + + #ifdef _LZMA_OUT_READ + if (dictionarySize - distanceLimit > (UInt32)len) + distanceLimit += len; + else + distanceLimit = dictionarySize; + #endif + + do + { + #ifdef _LZMA_OUT_READ + UInt32 pos = dictionaryPos - rep0; + if (pos >= dictionarySize) + pos += dictionarySize; + previousByte = dictionary[pos]; + dictionary[dictionaryPos] = previousByte; + if (++dictionaryPos == dictionarySize) + dictionaryPos = 0; + #else + previousByte = outStream[nowPos - rep0]; + #endif + len--; + outStream[nowPos++] = previousByte; + } + while(len != 0 && nowPos < outSize); + } + } + RC_NORMALIZE; + + #ifdef _LZMA_OUT_READ + vs->Range = Range; + vs->Code = Code; + vs->DictionaryPos = dictionaryPos; + vs->GlobalPos = globalPos + (UInt32)nowPos; + vs->DistanceLimit = distanceLimit; + vs->Reps[0] = rep0; + vs->Reps[1] = rep1; + vs->Reps[2] = rep2; + vs->Reps[3] = rep3; + vs->State = state; + vs->RemainLen = len; + vs->TempDictionary[0] = tempDictionary[0]; + #endif + + #ifdef _LZMA_IN_CB + vs->Buffer = Buffer; + vs->BufferLim = BufferLim; + #else + *inSizeProcessed = (SizeT)(Buffer - inStream); + #endif + *outSizeProcessed = nowPos; + return LZMA_RESULT_OK; +} diff --git a/lib_generic/lzma/LzmaDecode.h b/lib_generic/lzma/LzmaDecode.h new file mode 100644 index 0000000..bd75525 --- /dev/null +++ b/lib_generic/lzma/LzmaDecode.h @@ -0,0 +1,113 @@ +/* + LzmaDecode.h + LZMA Decoder interface + + LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01) + http://www.7-zip.org/ + + LZMA SDK is licensed under two licenses: + 1) GNU Lesser General Public License (GNU LGPL) + 2) Common Public License (CPL) + It means that you can select one of these two licenses and + follow rules of that license. + + SPECIAL EXCEPTION: + Igor Pavlov, as the author of this code, expressly permits you to + statically or dynamically link your code (or bind by name) to the + interfaces of this file without subjecting your linked code to the + terms of the CPL or GNU LGPL. Any modifications or additions + to this file, however, are subject to the LGPL or CPL terms. +*/ + +#ifndef __LZMADECODE_H +#define __LZMADECODE_H + +#include "LzmaTypes.h" + +/* #define _LZMA_IN_CB */ +/* Use callback for input data */ + +/* #define _LZMA_OUT_READ */ +/* Use read function for output data */ + +/* #define _LZMA_PROB32 */ +/* It can increase speed on some 32-bit CPUs, + but memory usage will be doubled in that case */ + +/* #define _LZMA_LOC_OPT */ +/* Enable local speed optimizations inside code */ + +#ifdef _LZMA_PROB32 +#define CProb UInt32 +#else +#define CProb UInt16 +#endif + +#define LZMA_RESULT_OK 0 +#define LZMA_RESULT_DATA_ERROR 1 + +#ifdef _LZMA_IN_CB +typedef struct _ILzmaInCallback +{ + int (*Read)(void *object, const unsigned char **buffer, SizeT *bufferSize); +} ILzmaInCallback; +#endif + +#define LZMA_BASE_SIZE 1846 +#define LZMA_LIT_SIZE 768 + +#define LZMA_PROPERTIES_SIZE 5 + +typedef struct _CLzmaProperties +{ + int lc; + int lp; + int pb; + #ifdef _LZMA_OUT_READ + UInt32 DictionarySize; + #endif +}CLzmaProperties; + +int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size); + +#define LzmaGetNumProbs(Properties) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((Properties)->lc + (Properties)->lp))) + +#define kLzmaNeedInitId (-2) + +typedef struct _CLzmaDecoderState +{ + CLzmaProperties Properties; + CProb *Probs; + + #ifdef _LZMA_IN_CB + const unsigned char *Buffer; + const unsigned char *BufferLim; + #endif + + #ifdef _LZMA_OUT_READ + unsigned char *Dictionary; + UInt32 Range; + UInt32 Code; + UInt32 DictionaryPos; + UInt32 GlobalPos; + UInt32 DistanceLimit; + UInt32 Reps[4]; + int State; + int RemainLen; + unsigned char TempDictionary[4]; + #endif +} CLzmaDecoderState; + +#ifdef _LZMA_OUT_READ +#define LzmaDecoderInit(vs) { (vs)->RemainLen = kLzmaNeedInitId; } +#endif + +int LzmaDecode(CLzmaDecoderState *vs, + #ifdef _LZMA_IN_CB + ILzmaInCallback *inCallback, + #else + const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed, + #endif + unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed); + +#endif diff --git a/lib_generic/lzma/LzmaTools.c b/lib_generic/lzma/LzmaTools.c new file mode 100644 index 0000000..5ac42e5 --- /dev/null +++ b/lib_generic/lzma/LzmaTools.c @@ -0,0 +1,142 @@ +/* + * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.57 + * + * Copyright (C) 2007-2008 Industrie Dial Face S.p.A. + * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com) + * + * Copyright (C) 1999-2005 Igor Pavlov + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * LZMA_Alone stream format: + * + * uchar Properties[5] + * uint64 Uncompressed size + * uchar data[*] + * + */ + +#include +#include + +#ifdef CONFIG_LZMA + +#define LZMA_PROPERTIES_OFFSET 0 +#define LZMA_SIZE_OFFSET LZMA_PROPERTIES_SIZE +#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t) + +#include "LzmaTools.h" +#include "LzmaDecode.h" + +#include +#include + +int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize, + unsigned char *inStream, SizeT length) +{ + int res = LZMA_RESULT_DATA_ERROR; + int i; + + SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */ + SizeT inProcessed; + SizeT outProcessed; + SizeT outSize; + SizeT outSizeHigh; + CLzmaDecoderState state; /* it's about 24-80 bytes structure, if int is 32-bit */ + unsigned char properties[LZMA_PROPERTIES_SIZE]; + SizeT compressedSize = (SizeT)(length - LZMA_DATA_OFFSET); + + debug ("LZMA: Image address............... 0x%lx\n", inStream); + debug ("LZMA: Properties address.......... 0x%lx\n", inStream + LZMA_PROPERTIES_OFFSET); + debug ("LZMA: Uncompressed size address... 0x%lx\n", inStream + LZMA_SIZE_OFFSET); + debug ("LZMA: Compressed data address..... 0x%lx\n", inStream + LZMA_DATA_OFFSET); + debug ("LZMA: Destination address......... 0x%lx\n", outStream); + + memcpy(properties, inStream + LZMA_PROPERTIES_OFFSET, LZMA_PROPERTIES_SIZE); + + memset(&state, 0, sizeof(state)); + res = LzmaDecodeProperties(&state.Properties, + properties, + LZMA_PROPERTIES_SIZE); + if (res != LZMA_RESULT_OK) { + return res; + } + + outSize = 0; + outSizeHigh = 0; + /* Read the uncompressed size */ + for (i = 0; i < 8; i++) { + unsigned char b = inStream[LZMA_SIZE_OFFSET + i]; + if (i < 4) { + outSize += (UInt32)(b) << (i * 8); + } else { + outSizeHigh += (UInt32)(b) << ((i - 4) * 8); + } + } + + outSizeFull = (SizeT)outSize; + if (sizeof(SizeT) >= 8) { + /* + * SizeT is a 64 bit uint => We can manage files larger than 4GB! + * + */ + outSizeFull |= (((SizeT)outSizeHigh << 16) << 16); + } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) { + /* + * SizeT is a 32 bit uint => We cannot manage files larger than + * 4GB! + * + */ + debug ("LZMA: 64bit support not enabled.\n"); + return LZMA_RESULT_DATA_ERROR; + } + + debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull); + debug ("LZMA: Compresed size.............. 0x%lx\n", compressedSize); + debug ("LZMA: Dynamic memory needed....... 0x%lx", LzmaGetNumProbs(&state.Properties) * sizeof(CProb)); + + state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb)); + + if (state.Probs == 0 + || (outStream == 0 && outSizeFull != 0) + || (inStream == 0 && compressedSize != 0)) { + free(state.Probs); + debug ("\n"); + return LZMA_RESULT_DATA_ERROR; + } + + debug (" allocated.\n"); + + /* Decompress */ + + res = LzmaDecode(&state, + inStream + LZMA_DATA_OFFSET, compressedSize, &inProcessed, + outStream, outSizeFull, &outProcessed); + if (res != LZMA_RESULT_OK) { + return res; + } + + *uncompressedSize = outProcessed; + free(state.Probs); + return res; +} + +#endif diff --git a/lib_generic/lzma/LzmaTools.h b/lib_generic/lzma/LzmaTools.h new file mode 100644 index 0000000..c91fb89 --- /dev/null +++ b/lib_generic/lzma/LzmaTools.h @@ -0,0 +1,35 @@ +/* + * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.57 + * + * Copyright (C) 2007-2008 Industrie Dial Face S.p.A. + * Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com) + * + * Copyright (C) 1999-2005 Igor Pavlov + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef __LZMA_TOOL_H__ +#define __LZMA_TOOL_H__ + +#include "LzmaTypes.h" + +extern int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize, + unsigned char *inStream, SizeT length); +#endif diff --git a/lib_generic/lzma/LzmaTypes.h b/lib_generic/lzma/LzmaTypes.h new file mode 100644 index 0000000..83f96f4 --- /dev/null +++ b/lib_generic/lzma/LzmaTypes.h @@ -0,0 +1,45 @@ +/* +LzmaTypes.h + +Types for LZMA Decoder + +This file written and distributed to public domain by Igor Pavlov. +This file is part of LZMA SDK 4.40 (2006-05-01) +*/ + +#ifndef __LZMATYPES_H +#define __LZMATYPES_H + +#ifndef _7ZIP_BYTE_DEFINED +#define _7ZIP_BYTE_DEFINED +typedef unsigned char Byte; +#endif + +#ifndef _7ZIP_UINT16_DEFINED +#define _7ZIP_UINT16_DEFINED +typedef unsigned short UInt16; +#endif + +#ifndef _7ZIP_UINT32_DEFINED +#define _7ZIP_UINT32_DEFINED +#ifdef _LZMA_UINT32_IS_ULONG +typedef unsigned long UInt32; +#else +typedef unsigned int UInt32; +#endif +#endif + +/* #define _LZMA_NO_SYSTEM_SIZE_T */ +/* You can use it, if you don't want */ + +#ifndef _7ZIP_SIZET_DEFINED +#define _7ZIP_SIZET_DEFINED +#ifdef _LZMA_NO_SYSTEM_SIZE_T +typedef UInt32 SizeT; +#else +#include +typedef size_t SizeT; +#endif +#endif + +#endif diff --git a/lib_generic/lzma/Makefile b/lib_generic/lzma/Makefile new file mode 100644 index 0000000..3400cd9 --- /dev/null +++ b/lib_generic/lzma/Makefile @@ -0,0 +1,49 @@ +# +# Copyright (C) 2007-2008 Industrie Dial Face S.p.A. +# Luigi 'Comio' Mantellini (luigi.mantellini@idf-hit.com) +# +# (C) Copyright 2003-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2 of +# the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, +# MA 02111-1307 USA +# + +include $(TOPDIR)/config.mk + +LIB = $(obj)liblzma.a + +SOBJS = + +COBJS-$(CONFIG_LZMA) += LzmaDecode.o LzmaTools.o + +COBJS = $(COBJS-y) +SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) + +$(LIB): $(obj).depend $(OBJS) + $(AR) $(ARFLAGS) $@ $(OBJS) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/lib_generic/lzma/README.txt b/lib_generic/lzma/README.txt new file mode 100644 index 0000000..fdb3086 --- /dev/null +++ b/lib_generic/lzma/README.txt @@ -0,0 +1,28 @@ +The lib_lzma functionality was written by Igor Pavlov. +The original source cames from the LZMA SDK web page: + +URL: http://www.7-zip.org/sdk.html +Author: Igor Pavlov + +The import is made using the import_lzmasdk.sh script that: + +* untars the lzmaXYY.tar.bz2 file (from the download web page) +* copies the files LzmaDecode.h, LzmaTypes.h, LzmaDecode.c, history.txt, + LGPL.txt, and lzma.txt from source archive into the lib_lzma directory (pwd). + +Example: + + ./import_lzmasdk.sh ~/lzma457.tar.bz2 + +Notice: The files from lzma sdk are not _modified_ by this script! + +The files LzmaTools.{c,h} are provided to export the lzmaBuffToBuffDecompress() +function that wraps the complex LzmaDecode() function from the LZMA SDK. The +do_bootm() function uses the lzmaBuffToBuffDecopress() function to expand the +compressed image. + +The directory U-BOOT/include/lzma contains stubs files that permit to use the +library directly from U-BOOT code without touching the original LZMA SDK's +files. + +Luigi 'Comio' Mantellini diff --git a/lib_generic/lzma/history.txt b/lib_generic/lzma/history.txt new file mode 100644 index 0000000..4b5807f --- /dev/null +++ b/lib_generic/lzma/history.txt @@ -0,0 +1,198 @@ +HISTORY of the LZMA SDK +----------------------- + + 4.57 2007-12-12 + ------------------------- + - Speed optimizations in Ñ++ LZMA Decoder. + - Small changes for more compatibility with some C/C++ compilers. + + + 4.49 beta 2007-07-05 + ------------------------- + - .7z ANSI-C Decoder: + - now it supports BCJ and BCJ2 filters + - now it supports files larger than 4 GB. + - now it supports "Last Write Time" field for files. + - C++ code for .7z archives compressing/decompressing from 7-zip + was included to LZMA SDK. + + + 4.43 2006-06-04 + ------------------------- + - Small changes for more compatibility with some C/C++ compilers. + + + 4.42 2006-05-15 + ------------------------- + - Small changes in .h files in ANSI-C version. + + + 4.39 beta 2006-04-14 + ------------------------- + - Bug in versions 4.33b:4.38b was fixed: + C++ version of LZMA encoder could not correctly compress + files larger than 2 GB with HC4 match finder (-mfhc4). + + + 4.37 beta 2005-04-06 + ------------------------- + - Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. + + + 4.35 beta 2005-03-02 + ------------------------- + - Bug was fixed in C++ version of LZMA Decoder: + If encoded stream was corrupted, decoder could access memory + outside of allocated range. + + + 4.34 beta 2006-02-27 + ------------------------- + - Compressing speed and memory requirements for compressing were increased + - LZMA now can use only these match finders: HC4, BT2, BT3, BT4 + + + 4.32 2005-12-09 + ------------------------- + - Java version of LZMA SDK was included + + + 4.30 2005-11-20 + ------------------------- + - Compression ratio was improved in -a2 mode + - Speed optimizations for compressing in -a2 mode + - -fb switch now supports values up to 273 + - Bug in 7z_C (7zIn.c) was fixed: + It used Alloc/Free functions from different memory pools. + So if program used two memory pools, it worked incorrectly. + - 7z_C: .7z format supporting was improved + - LZMA# SDK (C#.NET version) was included + + + 4.27 (Updated) 2005-09-21 + ------------------------- + - Some GUIDs/interfaces in C++ were changed. + IStream.h: + ISequentialInStream::Read now works as old ReadPart + ISequentialOutStream::Write now works as old WritePart + + + 4.27 2005-08-07 + ------------------------- + - Bug in LzmaDecodeSize.c was fixed: + if _LZMA_IN_CB and _LZMA_OUT_READ were defined, + decompressing worked incorrectly. + + + 4.26 2005-08-05 + ------------------------- + - Fixes in 7z_C code and LzmaTest.c: + previous versions could work incorrectly, + if malloc(0) returns 0 + + + 4.23 2005-06-29 + ------------------------- + - Small fixes in C++ code + + + 4.22 2005-06-10 + ------------------------- + - Small fixes + + + 4.21 2005-06-08 + ------------------------- + - Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed + - New additional version of ANSI-C LZMA Decoder with zlib-like interface: + - LzmaStateDecode.h + - LzmaStateDecode.c + - LzmaStateTest.c + - ANSI-C LZMA Decoder now can decompress files larger than 4 GB + + + 4.17 2005-04-18 + ------------------------- + - New example for RAM->RAM compressing/decompressing: + LZMA + BCJ (filter for x86 code): + - LzmaRam.h + - LzmaRam.cpp + - LzmaRamDecode.h + - LzmaRamDecode.c + - -f86 switch for lzma.exe + + + 4.16 2005-03-29 + ------------------------- + - Bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder): + If _LZMA_OUT_READ was defined, and if encoded stream was corrupted, + decoder could access memory outside of allocated range. + - Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster). + Old version of LZMA Decoder now is in file LzmaDecodeSize.c. + LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c + - Small speed optimization in LZMA C++ code + - filter for SPARC's code was added + - Simplified version of .7z ANSI-C Decoder was included + + + 4.06 2004-09-05 + ------------------------- + - Bug in v4.05 was fixed: + LZMA-Encoder didn't release output stream in some cases. + + + 4.05 2004-08-25 + ------------------------- + - Source code of filters for x86, IA-64, ARM, ARM-Thumb + and PowerPC code was included to SDK + - Some internal minor changes + + + 4.04 2004-07-28 + ------------------------- + - More compatibility with some C++ compilers + + + 4.03 2004-06-18 + ------------------------- + - "Benchmark" command was added. It measures compressing + and decompressing speed and shows rating values. + Also it checks hardware errors. + + + 4.02 2004-06-10 + ------------------------- + - C++ LZMA Encoder/Decoder code now is more portable + and it can be compiled by GCC on Linux. + + + 4.01 2004-02-15 + ------------------------- + - Some detection of data corruption was enabled. + LzmaDecode.c / RangeDecoderReadByte + ..... + { + rd->ExtraBytes = 1; + return 0xFF; + } + + + 4.00 2004-02-13 + ------------------------- + - Original version of LZMA SDK + + + +HISTORY of the LZMA +------------------- + 2001-2007: Improvements to LZMA compressing/decompressing code, + keeping compatibility with original LZMA format + 1996-2001: Development of LZMA compression format + + Some milestones: + + 2001-08-30: LZMA compression was added to 7-Zip + 1999-01-02: First version of 7-Zip was released + + +End of document diff --git a/lib_generic/lzma/import_lzmasdk.sh b/lib_generic/lzma/import_lzmasdk.sh new file mode 100644 index 0000000..5212e48 --- /dev/null +++ b/lib_generic/lzma/import_lzmasdk.sh @@ -0,0 +1,38 @@ +#!/bin/sh + +usage() { + echo "Usage: $0 lzmaVERSION.tar.bz2" >&2 + echo >&2 + exit 1 +} + +if [ "$1" = "" ] ; then + usage +fi + +if [ ! -f $1 ] ; then + echo "$1 doesn't exist!" >&2 + exit 1 +fi + +BASENAME=`basename $1 .tar.bz2` +TMPDIR=/tmp/tmp_lib_$BASENAME +FILES="C/Compress/Lzma/LzmaDecode.h + C/Compress/Lzma/LzmaTypes.h + C/Compress/Lzma/LzmaDecode.c + history.txt + LGPL.txt + lzma.txt" + + +mkdir -p $TMPDIR +echo "Untar $1 -> $TMPDIR" +tar -jxf $1 -C $TMPDIR + +for i in $FILES; do + echo Copying $TMPDIR/$i \-\> `basename $i` + cp $TMPDIR/$i . + chmod -x `basename $i` +done + +echo "done!" diff --git a/lib_generic/lzma/lzma.txt b/lib_generic/lzma/lzma.txt new file mode 100644 index 0000000..c40d133 --- /dev/null +++ b/lib_generic/lzma/lzma.txt @@ -0,0 +1,663 @@ +LZMA SDK 4.57 +------------- + +LZMA SDK Copyright (C) 1999-2007 Igor Pavlov + +LZMA SDK provides the documentation, samples, header files, libraries, +and tools you need to develop applications that use LZMA compression. + +LZMA is default and general compression method of 7z format +in 7-Zip compression program (www.7-zip.org). LZMA provides high +compression ratio and very fast decompression. + +LZMA is an improved version of famous LZ77 compression algorithm. +It was improved in way of maximum increasing of compression ratio, +keeping high decompression speed and low memory requirements for +decompressing. + + + +LICENSE +------- + +LZMA SDK is available under any of the following licenses: + +1) GNU Lesser General Public License (GNU LGPL) +2) Common Public License (CPL) +3) Simplified license for unmodified code (read SPECIAL EXCEPTION) +4) Proprietary license + +It means that you can select one of these four options and follow rules of that license. + + +1,2) GNU LGPL and CPL licenses are pretty similar and both these +licenses are classified as + - "Free software licenses" at http://www.gnu.org/ + - "OSI-approved" at http://www.opensource.org/ + + +3) SPECIAL EXCEPTION + +Igor Pavlov, as the author of this code, expressly permits you +to statically or dynamically link your code (or bind by name) +to the files from LZMA SDK without subjecting your linked +code to the terms of the CPL or GNU LGPL. +Any modifications or additions to files from LZMA SDK, however, +are subject to the GNU LGPL or CPL terms. + +SPECIAL EXCEPTION allows you to use LZMA SDK in applications with closed code, +while you keep LZMA SDK code unmodified. + + +SPECIAL EXCEPTION #2: Igor Pavlov, as the author of this code, expressly permits +you to use this code under the same terms and conditions contained in the License +Agreement you have for any previous version of LZMA SDK developed by Igor Pavlov. + +SPECIAL EXCEPTION #2 allows owners of proprietary licenses to use latest version +of LZMA SDK as update for previous versions. + + +SPECIAL EXCEPTION #3: Igor Pavlov, as the author of this code, expressly permits +you to use code of the following files: +BranchTypes.h, LzmaTypes.h, LzmaTest.c, LzmaStateTest.c, LzmaAlone.cpp, +LzmaAlone.cs, LzmaAlone.java +as public domain code. + + +4) Proprietary license + +LZMA SDK also can be available under a proprietary license which +can include: + +1) Right to modify code without subjecting modified code to the +terms of the CPL or GNU LGPL +2) Technical support for code + +To request such proprietary license or any additional consultations, +send email message from that page: +http://www.7-zip.org/support.html + + +You should have received a copy of the GNU Lesser General Public +License along with this library; if not, write to the Free Software +Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +You should have received a copy of the Common Public License +along with this library. + + +LZMA SDK Contents +----------------- + +LZMA SDK includes: + + - C++ source code of LZMA compressing and decompressing + - ANSI-C compatible source code for LZMA decompressing + - C# source code for LZMA compressing and decompressing + - Java source code for LZMA compressing and decompressing + - Compiled file->file LZMA compressing/decompressing program for Windows system + +ANSI-C LZMA decompression code was ported from original C++ sources to C. +Also it was simplified and optimized for code size. +But it is fully compatible with LZMA from 7-Zip. + + +UNIX/Linux version +------------------ +To compile C++ version of file->file LZMA, go to directory +C/7zip/Compress/LZMA_Alone +and type "make" or "make clean all" to recompile all. + +In some UNIX/Linux versions you must compile LZMA with static libraries. +To compile with static libraries, change string in makefile +LIB = -lm +to string +LIB = -lm -static + + +Files +--------------------- +C - C source code +CPP - CPP source code +CS - C# source code +Java - Java source code +lzma.txt - LZMA SDK description (this file) +7zFormat.txt - 7z Format description +7zC.txt - 7z ANSI-C Decoder description (this file) +methods.txt - Compression method IDs for .7z +LGPL.txt - GNU Lesser General Public License +CPL.html - Common Public License +lzma.exe - Compiled file->file LZMA encoder/decoder for Windows +history.txt - history of the LZMA SDK + + +Source code structure +--------------------- + +C - C files + Compress - files related to compression/decompression + Lz - files related to LZ (Lempel-Ziv) compression algorithm + Lzma - ANSI-C compatible LZMA decompressor + + LzmaDecode.h - interface for LZMA decoding on ANSI-C + LzmaDecode.c - LZMA decoding on ANSI-C (new fastest version) + LzmaDecodeSize.c - LZMA decoding on ANSI-C (old size-optimized version) + LzmaTest.c - test application that decodes LZMA encoded file + LzmaTypes.h - basic types for LZMA Decoder + LzmaStateDecode.h - interface for LZMA decoding (State version) + LzmaStateDecode.c - LZMA decoding on ANSI-C (State version) + LzmaStateTest.c - test application (State version) + + Branch - Filters for x86, IA-64, ARM, ARM-Thumb, PowerPC and SPARC code + + Archive - files related to archiving + 7z_C - 7z ANSI-C Decoder + + +CPP -- CPP files + + Common - common files for C++ projects + Windows - common files for Windows related code + 7zip - files related to 7-Zip Project + + Common - common files for 7-Zip + + Compress - files related to compression/decompression + + LZ - files related to LZ (Lempel-Ziv) compression algorithm + + Copy - Copy coder + RangeCoder - Range Coder (special code of compression/decompression) + LZMA - LZMA compression/decompression on C++ + LZMA_Alone - file->file LZMA compression/decompression + + Branch - Filters for x86, IA-64, ARM, ARM-Thumb, PowerPC and SPARC code + + Archive - files related to archiving + + Common - common files for archive handling + 7z - 7z C++ Encoder/Decoder + + Bundles - Modules that are bundles of other modules + + Alone7z - 7zr.exe: Standalone version of 7z.exe that supports only 7z/LZMA/BCJ/BCJ2 + Format7zR - 7zr.dll: Reduced version of 7za.dll: extracting/compressing to 7z/LZMA/BCJ/BCJ2 + Format7zExtractR - 7zxr.dll: Reduced version of 7zxa.dll: extracting from 7z/LZMA/BCJ/BCJ2. + + UI - User Interface files + + Client7z - Test application for 7za.dll, 7zr.dll, 7zxr.dll + Common - Common UI files + Console - Code for console archiver + + + +CS - C# files + 7zip + Common - some common files for 7-Zip + Compress - files related to compression/decompression + LZ - files related to LZ (Lempel-Ziv) compression algorithm + LZMA - LZMA compression/decompression + LzmaAlone - file->file LZMA compression/decompression + RangeCoder - Range Coder (special code of compression/decompression) + +Java - Java files + SevenZip + Compression - files related to compression/decompression + LZ - files related to LZ (Lempel-Ziv) compression algorithm + LZMA - LZMA compression/decompression + RangeCoder - Range Coder (special code of compression/decompression) + +C/C++ source code of LZMA SDK is part of 7-Zip project. + +You can find ANSI-C LZMA decompressing code at folder + C/7zip/Compress/Lzma +7-Zip doesn't use that ANSI-C LZMA code and that code was developed +specially for this SDK. And files from C/7zip/Compress/Lzma do not need +files from other directories of SDK for compiling. + +7-Zip source code can be downloaded from 7-Zip's SourceForge page: + + http://sourceforge.net/projects/sevenzip/ + + +LZMA features +------------- + - Variable dictionary size (up to 1 GB) + - Estimated compressing speed: about 1 MB/s on 1 GHz CPU + - Estimated decompressing speed: + - 8-12 MB/s on 1 GHz Intel Pentium 3 or AMD Athlon + - 500-1000 KB/s on 100 MHz ARM, MIPS, PowerPC or other simple RISC + - Small memory requirements for decompressing (8-32 KB + DictionarySize) + - Small code size for decompressing: 2-8 KB (depending from + speed optimizations) + +LZMA decoder uses only integer operations and can be +implemented in any modern 32-bit CPU (or on 16-bit CPU with some conditions). + +Some critical operations that affect to speed of LZMA decompression: + 1) 32*16 bit integer multiply + 2) Misspredicted branches (penalty mostly depends from pipeline length) + 3) 32-bit shift and arithmetic operations + +Speed of LZMA decompressing mostly depends from CPU speed. +Memory speed has no big meaning. But if your CPU has small data cache, +overall weight of memory speed will slightly increase. + + +How To Use +---------- + +Using LZMA encoder/decoder executable +-------------------------------------- + +Usage: LZMA inputFile outputFile [...] + + e: encode file + + d: decode file + + b: Benchmark. There are two tests: compressing and decompressing + with LZMA method. Benchmark shows rating in MIPS (million + instructions per second). Rating value is calculated from + measured speed and it is normalized with AMD Athlon 64 X2 CPU + results. Also Benchmark checks possible hardware errors (RAM + errors in most cases). Benchmark uses these settings: + (-a1, -d21, -fb32, -mfbt4). You can change only -d. Also you + can change number of iterations. Example for 30 iterations: + LZMA b 30 + Default number of iterations is 10. + + + + + -a{N}: set compression mode 0 = fast, 1 = normal + default: 1 (normal) + + d{N}: Sets Dictionary size - [0, 30], default: 23 (8MB) + The maximum value for dictionary size is 1 GB = 2^30 bytes. + Dictionary size is calculated as DictionarySize = 2^N bytes. + For decompressing file compressed by LZMA method with dictionary + size D = 2^N you need about D bytes of memory (RAM). + + -fb{N}: set number of fast bytes - [5, 273], default: 128 + Usually big number gives a little bit better compression ratio + and slower compression process. + + -lc{N}: set number of literal context bits - [0, 8], default: 3 + Sometimes lc=4 gives gain for big files. + + -lp{N}: set number of literal pos bits - [0, 4], default: 0 + lp switch is intended for periodical data when period is + equal 2^N. For example, for 32-bit (4 bytes) + periodical data you can use lp=2. Often it's better to set lc0, + if you change lp switch. + + -pb{N}: set number of pos bits - [0, 4], default: 2 + pb switch is intended for periodical data + when period is equal 2^N. + + -mf{MF_ID}: set Match Finder. Default: bt4. + Algorithms from hc* group doesn't provide good compression + ratio, but they often works pretty fast in combination with + fast mode (-a0). + + Memory requirements depend from dictionary size + (parameter "d" in table below). + + MF_ID Memory Description + + bt2 d * 9.5 + 4MB Binary Tree with 2 bytes hashing. + bt3 d * 11.5 + 4MB Binary Tree with 3 bytes hashing. + bt4 d * 11.5 + 4MB Binary Tree with 4 bytes hashing. + hc4 d * 7.5 + 4MB Hash Chain with 4 bytes hashing. + + -eos: write End Of Stream marker. By default LZMA doesn't write + eos marker, since LZMA decoder knows uncompressed size + stored in .lzma file header. + + -si: Read data from stdin (it will write End Of Stream marker). + -so: Write data to stdout + + +Examples: + +1) LZMA e file.bin file.lzma -d16 -lc0 + +compresses file.bin to file.lzma with 64 KB dictionary (2^16=64K) +and 0 literal context bits. -lc0 allows to reduce memory requirements +for decompression. + + +2) LZMA e file.bin file.lzma -lc0 -lp2 + +compresses file.bin to file.lzma with settings suitable +for 32-bit periodical data (for example, ARM or MIPS code). + +3) LZMA d file.lzma file.bin + +decompresses file.lzma to file.bin. + + +Compression ratio hints +----------------------- + +Recommendations +--------------- + +To increase compression ratio for LZMA compressing it's desirable +to have aligned data (if it's possible) and also it's desirable to locate +data in such order, where code is grouped in one place and data is +grouped in other place (it's better than such mixing: code, data, code, +data, ...). + + +Using Filters +------------- +You can increase compression ratio for some data types, using +special filters before compressing. For example, it's possible to +increase compression ratio on 5-10% for code for those CPU ISAs: +x86, IA-64, ARM, ARM-Thumb, PowerPC, SPARC. + +You can find C/C++ source code of such filters in folder "7zip/Compress/Branch" + +You can check compression ratio gain of these filters with such +7-Zip commands (example for ARM code): +No filter: + 7z a a1.7z a.bin -m0=lzma + +With filter for little-endian ARM code: + 7z a a2.7z a.bin -m0=bc_arm -m1=lzma + +With filter for big-endian ARM code (using additional Swap4 filter): + 7z a a3.7z a.bin -m0=swap4 -m1=bc_arm -m2=lzma + +It works in such manner: +Compressing = Filter_encoding + LZMA_encoding +Decompressing = LZMA_decoding + Filter_decoding + +Compressing and decompressing speed of such filters is very high, +so it will not increase decompressing time too much. +Moreover, it reduces decompression time for LZMA_decoding, +since compression ratio with filtering is higher. + +These filters convert CALL (calling procedure) instructions +from relative offsets to absolute addresses, so such data becomes more +compressible. Source code of these CALL filters is pretty simple +(about 20 lines of C++), so you can convert it from C++ version yourself. + +For some ISAs (for example, for MIPS) it's impossible to get gain from such filter. + + +LZMA compressed file format +--------------------------- +Offset Size Description + 0 1 Special LZMA properties for compressed data + 1 4 Dictionary size (little endian) + 5 8 Uncompressed size (little endian). -1 means unknown size + 13 Compressed data + + +ANSI-C LZMA Decoder +~~~~~~~~~~~~~~~~~~~ + +To compile ANSI-C LZMA Decoder you can use one of the following files sets: +1) LzmaDecode.h + LzmaDecode.c + LzmaTest.c (fastest version) +2) LzmaDecode.h + LzmaDecodeSize.c + LzmaTest.c (old size-optimized version) +3) LzmaStateDecode.h + LzmaStateDecode.c + LzmaStateTest.c (zlib-like interface) + + +Memory requirements for LZMA decoding +------------------------------------- + +LZMA decoder doesn't allocate memory itself, so you must +allocate memory and send it to LZMA. + +Stack usage of LZMA decoding function for local variables is not +larger than 200 bytes. + +How To decompress data +---------------------- + +LZMA Decoder (ANSI-C version) now supports 5 interfaces: +1) Single-call Decompressing +2) Single-call Decompressing with input stream callback +3) Multi-call Decompressing with output buffer +4) Multi-call Decompressing with input callback and output buffer +5) Multi-call State Decompressing (zlib-like interface) + +Variant-5 is similar to Variant-4, but Variant-5 doesn't use callback functions. + +Decompressing steps +------------------- + +1) read LZMA properties (5 bytes): + unsigned char properties[LZMA_PROPERTIES_SIZE]; + +2) read uncompressed size (8 bytes, little-endian) + +3) Decode properties: + + CLzmaDecoderState state; /* it's 24-140 bytes structure, if int is 32-bit */ + + if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK) + return PrintError(rs, "Incorrect stream properties"); + +4) Allocate memory block for internal Structures: + + state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb)); + if (state.Probs == 0) + return PrintError(rs, kCantAllocateMessage); + + LZMA decoder uses array of CProb variables as internal structure. + By default, CProb is unsigned_short. But you can define _LZMA_PROB32 to make + it unsigned_int. It can increase speed on some 32-bit CPUs, but memory + usage will be doubled in that case. + + +5) Main Decompressing + +You must use one of the following interfaces: + +5.1 Single-call Decompressing +----------------------------- +When to use: RAM->RAM decompressing +Compile files: LzmaDecode.h, LzmaDecode.c +Compile defines: no defines +Memory Requirements: + - Input buffer: compressed size + - Output buffer: uncompressed size + - LZMA Internal Structures (~16 KB for default settings) + +Interface: + int res = LzmaDecode(&state, + inStream, compressedSize, &inProcessed, + outStream, outSize, &outProcessed); + + +5.2 Single-call Decompressing with input stream callback +-------------------------------------------------------- +When to use: File->RAM or Flash->RAM decompressing. +Compile files: LzmaDecode.h, LzmaDecode.c +Compile defines: _LZMA_IN_CB +Memory Requirements: + - Buffer for input stream: any size (for example, 16 KB) + - Output buffer: uncompressed size + - LZMA Internal Structures (~16 KB for default settings) + +Interface: + typedef struct _CBuffer + { + ILzmaInCallback InCallback; + FILE *File; + unsigned char Buffer[kInBufferSize]; + } CBuffer; + + int LzmaReadCompressed(void *object, const unsigned char **buffer, SizeT *size) + { + CBuffer *bo = (CBuffer *)object; + *buffer = bo->Buffer; + *size = MyReadFile(bo->File, bo->Buffer, kInBufferSize); + return LZMA_RESULT_OK; + } + + CBuffer g_InBuffer; + + g_InBuffer.File = inFile; + g_InBuffer.InCallback.Read = LzmaReadCompressed; + int res = LzmaDecode(&state, + &g_InBuffer.InCallback, + outStream, outSize, &outProcessed); + + +5.3 Multi-call decompressing with output buffer +----------------------------------------------- +When to use: RAM->File decompressing +Compile files: LzmaDecode.h, LzmaDecode.c +Compile defines: _LZMA_OUT_READ +Memory Requirements: + - Input buffer: compressed size + - Buffer for output stream: any size (for example, 16 KB) + - LZMA Internal Structures (~16 KB for default settings) + - LZMA dictionary (dictionary size is encoded in stream properties) + +Interface: + + state.Dictionary = (unsigned char *)malloc(state.Properties.DictionarySize); + + LzmaDecoderInit(&state); + do + { + LzmaDecode(&state, + inBuffer, inAvail, &inProcessed, + g_OutBuffer, outAvail, &outProcessed); + inAvail -= inProcessed; + inBuffer += inProcessed; + } + while you need more bytes + + see LzmaTest.c for more details. + + +5.4 Multi-call decompressing with input callback and output buffer +------------------------------------------------------------------ +When to use: File->File decompressing +Compile files: LzmaDecode.h, LzmaDecode.c +Compile defines: _LZMA_IN_CB, _LZMA_OUT_READ +Memory Requirements: + - Buffer for input stream: any size (for example, 16 KB) + - Buffer for output stream: any size (for example, 16 KB) + - LZMA Internal Structures (~16 KB for default settings) + - LZMA dictionary (dictionary size is encoded in stream properties) + +Interface: + + state.Dictionary = (unsigned char *)malloc(state.Properties.DictionarySize); + + LzmaDecoderInit(&state); + do + { + LzmaDecode(&state, + &bo.InCallback, + g_OutBuffer, outAvail, &outProcessed); + } + while you need more bytes + + see LzmaTest.c for more details: + + +5.5 Multi-call State Decompressing (zlib-like interface) +------------------------------------------------------------------ +When to use: file->file decompressing +Compile files: LzmaStateDecode.h, LzmaStateDecode.c +Compile defines: +Memory Requirements: + - Buffer for input stream: any size (for example, 16 KB) + - Buffer for output stream: any size (for example, 16 KB) + - LZMA Internal Structures (~16 KB for default settings) + - LZMA dictionary (dictionary size is encoded in stream properties) + +Interface: + + state.Dictionary = (unsigned char *)malloc(state.Properties.DictionarySize); + + + LzmaDecoderInit(&state); + do + { + res = LzmaDecode(&state, + inBuffer, inAvail, &inProcessed, + g_OutBuffer, outAvail, &outProcessed, + finishDecoding); + inAvail -= inProcessed; + inBuffer += inProcessed; + } + while you need more bytes + + see LzmaStateTest.c for more details: + + +6) Free all allocated blocks + + +Note +---- +LzmaDecodeSize.c is size-optimized version of LzmaDecode.c. +But compiled code of LzmaDecodeSize.c can be larger than +compiled code of LzmaDecode.c. So it's better to use +LzmaDecode.c in most cases. + + +EXIT codes +----------- + +LZMA decoder can return one of the following codes: + +#define LZMA_RESULT_OK 0 +#define LZMA_RESULT_DATA_ERROR 1 + +If you use callback function for input data and you return some +error code, LZMA Decoder also returns that code. + + + +LZMA Defines +------------ + +_LZMA_IN_CB - Use callback for input data + +_LZMA_OUT_READ - Use read function for output data + +_LZMA_LOC_OPT - Enable local speed optimizations inside code. + _LZMA_LOC_OPT is only for LzmaDecodeSize.c (size-optimized version). + _LZMA_LOC_OPT doesn't affect LzmaDecode.c (speed-optimized version) + and LzmaStateDecode.c + +_LZMA_PROB32 - It can increase speed on some 32-bit CPUs, + but memory usage will be doubled in that case + +_LZMA_UINT32_IS_ULONG - Define it if int is 16-bit on your compiler + and long is 32-bit. + +_LZMA_SYSTEM_SIZE_T - Define it if you want to use system's size_t. + You can use it to enable 64-bit sizes supporting + + + +C++ LZMA Encoder/Decoder +~~~~~~~~~~~~~~~~~~~~~~~~ +C++ LZMA code use COM-like interfaces. So if you want to use it, +you can study basics of COM/OLE. + +By default, LZMA Encoder contains all Match Finders. +But for compressing it's enough to have just one of them. +So for reducing size of compressing code you can define: + #define COMPRESS_MF_BT + #define COMPRESS_MF_BT4 +and it will use only bt4 match finder. + + +--- + +http://www.7-zip.org +http://www.7-zip.org/support.html -- cgit v1.1