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Add forked and optimized copy of LGPL version of Libbsc.

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Strip out Sort Transform from Libbsc copy.
Reduce Libbsc memory use.
Avoid redundant adler32 of data block in Libbsc.
This commit is contained in:
Moinak Ghosh 2013-11-30 22:13:33 +05:30
parent c4c4b47138
commit fb25e53b4f
37 changed files with 12401 additions and 20 deletions
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18
Makefile.in
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@ -323,10 +323,7 @@ $(KECCAK_OBJS): $(KECCAK_SRCS) $(KECCAK_HDRS)
$(KECCAK_OBJS_ASM): $(KECCAK_SRCS_ASM) $(KECCAK_HDRS)
$(COMPILE) $(KECCAK_FLAGS) $(@:.o=.s) -o $@
$(LIBBSCLIB):
(cd $(LIBBSCDIR); make)
$(LIBBSCWRAPOBJ): $(LIBBSCWRAP) $(LIBBSCLIB)
$(LIBBSCWRAPOBJ): $(LIBBSCWRAP)
$(COMPILE) $(GEN_OPT) $(VEC_FLAGS) $(CPPFLAGS) $(@:.o=.c) -o $@
$(TRANSP_OBJS): $(TRANSP_SRCS) $(TRANSP_HDRS)
@ -367,14 +364,18 @@ $(MAINOBJS): $(MAINSRCS) $(MAINHDRS)
$(PROGOBJS): $(PROGSRCS) $(PROGHDRS)
$(COMPILE) $(GEN_OPT) $(LOOP_OPTFLAGS) $(CPPFLAGS) $(@:.o=.c) -o $@
$(LIB): $(OBJS)
$(LIBBSCLIB):
(cd $(LIBBSCDIR); make)
$(LIB): $(OBJS) $(LIBBSCLIB)
$(LINK.LIB) -Wl,-soname,$(LIB).$(LIBVER) -o $(LIB).$(LIBVER) $(OBJS) $(LDLIBS)
ln -sf $(LIB).$(LIBVER) $(LIB)
$(PROG): $(LIB) $(PROGOBJS)
$(LINK.PROG) -o $@ $(PROGOBJS) $(LDLIBS) -L. -l$(LINKLIB)
./buildtmp/$(PROG):
mkdir -p buildtmp
cp $@ buildtmp
$(LINK.PROG) -o $@ $(PROGOBJS) $(LDLIBS) -L. -l$(LINKLIB)
$(PROG): $(LIB) $(PROGOBJS) ./buildtmp/$(PROG)
cat utils/pcompress.sh | sed "s#<PC_PATH>#`pwd`#" > pcompress
chmod +x pcompress
@ -389,6 +390,7 @@ clean:
distclean: clean
$(RM) Makefile
(cd $(LIBBSCDIR); make clean)
install: $(PROG)
@mkdir -p $(DESTDIR)$(PREFIX)/bin

13
bsc/AUTHORS Normal file
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@ -0,0 +1,13 @@
-- Authors of bsc and libbsc
Ilya Grebnov <Ilya.Grebnov@gmail.com>
-- This program is based on (at least) the work of
Yuta Mori, Charles Bloom, Julian Seward, Mike Burrows, Matt Mahoney,
David Wheeler, Sebastian Deorowicz, Florin Ghido, Peter Fenwick,
Michael Schindler, Bulat Ziganshin, Eugene Shelwien, Yann Collet,
Dmitry Shkarin, Mark Adler, Przemyslaw Skibinski, Duane Merrill.

64
bsc/CHANGES Normal file
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@ -0,0 +1,64 @@
Changes in 3.1.0 (July 8, 2012)
- Added Kepler GPU support with CUDA Toolkit 4.2
Changes in 3.0.0 (August 26, 2011)
- NVIDIA GPU acceleration of forward ST algorithms
- Added Sort Transform of order 7 & 8 (GPU only)
Changes in 2.8.0 (August 8, 2011)
- Added parallel version of LZP algorithm
- Large RAM pages (2 MB) support for Windows
- Improved performance of ST and BWT algorithms
Changes in 2.7.0 (June 5, 2011)
- Improved performance of LZP algorithm
Changes in 2.6.1 (May 4, 2011)
- Fixed bug in segmentation algorithm
Changes in 2.6.0 (April 30, 2011)
- Added Sort Transform of order 6
Changes in 2.5.0 (March 20, 2011)
- Some minor performance improvments
- CRC32 replaced with Adler32
Changes in 2.4.5 (January 3, 2011)
- Improved performance of reverse BWT and ST algorithms
Changes in 2.4.0 (October 18, 2010)
- Improved performance of reverse BWT and ST algorithms
Changes in 2.3.0 (August 9, 2010)
- Improved performance of QLFC algorithm
Changes in 2.2.5 (July 5, 2010)
- Added parallel version of segmentation algorithm
Changes in 2.2.0 (June 15, 2010)
- Added parallel version of reverse BWT transform
- Added parallel version of forward ST transform
Changes in 2.1.5 (June 1, 2010)
- Improved multi-core systems support
- Improved segmentation algorithm
Changes in 2.1.0 (May 17, 2010)
- Added GNU C++ compiler support
- Added makefile
Changes in 2.0.0 (May 3, 2010)
- Released source code under LGPL license
- Added multi-core systems support
- Added fast "-f" compression mode
- Added Sort Transform of order 3
Changes in 1.0.3 (April 11, 2010)
- Fixed bug in block-sorting algorithm
- Added support for large files(>2Gb long)
Changes in 1.0.1 (April 8, 2010)
- Decreased memory usage from 6 to 5 times per block size
Changes in 1.0.0 (April 7, 2010)
- First public version for community technology preview

674
bsc/COPYING Normal file
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@ -0,0 +1,674 @@
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but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.
14. Revised Versions of this License.
The Free Software Foundation may publish revised and/or new versions of
the GNU 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
Program specifies that a certain numbered version of the GNU General
Public License "or any later version" applies to it, you have the
option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the
GNU General Public License, you may choose any version ever published
by the Free Software Foundation.
If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "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 PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM 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 PROGRAM (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 PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
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 3 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, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
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a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from
a header file that is part of the Library. You may convey such object
code under terms of your choice, provided that, if the incorporated
material is not limited to numerical parameters, data structure
layouts and accessors, or small macros, inline functions and templates
(ten or fewer lines in length), you do both of the following:
a) Give prominent notice with each copy of the object code that the
Library is used in it and that the Library and its use are
covered by this License.
b) Accompany the object code with a copy of the GNU GPL and this license
document.
4. Combined Works.
You may convey a Combined Work under terms of your choice that,
taken together, effectively do not restrict modification of the
portions of the Library contained in the Combined Work and reverse
engineering for debugging such modifications, if you also do each of
the following:
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the Library is used in it and that the Library and its use are
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b) Accompany the Combined Work with a copy of the GNU GPL and this license
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c) For a Combined Work that displays copyright notices during
execution, include the copyright notice for the Library among
these notices, as well as a reference directing the user to the
copies of the GNU GPL and this license document.
d) Do one of the following:
0) Convey the Minimal Corresponding Source under the terms of this
License, and the Corresponding Application Code in a form
suitable for, and under terms that permit, the user to
recombine or relink the Application with a modified version of
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Corresponding Source.
1) Use a suitable shared library mechanism for linking with the
Library. A suitable mechanism is one that (a) uses at run time
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e) Provide Installation Information, but only if you would otherwise
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GNU GPL, and only to the extent that such information is
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Combined Work produced by recombining or relinking the
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you use option 4d0, the Installation Information must accompany
the Minimal Corresponding Source and Corresponding Application
Code. If you use option 4d1, you must provide the Installation
Information in the manner specified by section 6 of the GNU GPL
for conveying Corresponding Source.)
5. Combined Libraries.
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 that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:
a) Accompany the combined library with a copy of the same work based
on the Library, uncombined with any other library facilities,
conveyed under the terms of this License.
b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
6. Revised Versions of the GNU Lesser General Public License.
The Free Software Foundation may publish revised and/or new versions
of the GNU 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 as you received it specifies that a certain numbered version
of the GNU Lesser General Public License "or any later version"
applies to it, you have the option of following the terms and
conditions either of that published version or of any later version
published by the Free Software Foundation. If the Library as you
received it does not specify a version number of the GNU Lesser
General Public License, you may choose any version of the GNU Lesser
General Public License ever published by the Free Software Foundation.
If the Library as you received it specifies that a proxy can decide
whether future versions of the GNU Lesser General Public License shall
apply, that proxy's public statement of acceptance of any version is
permanent authorization for you to choose that version for the
Library.

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Introduction:
-------------
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
bsc is a high performance file compressor based on lossless,
block-sorting data compression algorithms.
libbsc is a library based on bsc, it uses the same algorithms
as bsc and enables you to compress memory blocks.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
See the bsc and libbsc web site:
http://libbsc.com/ for more information.
Software License:
-----------------
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
Memory usage:
-------------
bsc compresses large files in blocks. Multiple blocks can be processed in
parallel on multiple-core CPU. At decompression time, the block size used
for compression is read from the header of the compressed file. The block
size and number of blocks processed in parallel affects both the compression
ratio achieved, and the amount of memory needed for compression and decompression.
Compression and decompression requirements are the same and in bytes, can
be estimated as 16Mb + 5 x block size x number of blocks processed in parallel.
GPU memory usage for NVIDIA CUDA technology is different from CPU memory usage
and can be estimated as 20 x block size.
NVIDIA GPU acceleration:
------------------------
1. libbsc uses NVIDIA CUDA technology, resulting in a performance boost on computers
with NVIDIA GPU of compute capability 1.1 or higher. Lists of supported GPUs
can be found on the NVIDIA website http://developer.nvidia.com/cuda-gpus.
You also need to install latest graphics drivers that support CUDA.
2. Individual kernels are limited to a 2-second runtime by Windows. Kernels that run for
longer than 2 seconds will trigger the Timeout Detection and Recovery (TDR) mechanism.
Detailed information on disabling the Windows TDR is available at:
http://msdn.microsoft.com/en-us/windows/hardware/gg487368.aspx#E2
Sort Transform:
---------------
Sort Transform is patented by Michael Schindler under US patent 6,199,064.
However for research purposes this algorithm is included in this software.
So if you are of the type who should worry about this (making money) worry away.
The author shall have no liability with respect to the infringement of
copyrights, trade secrets or any patents by this software. In no event will
the author be liable for any lost revenue or profits or other special,
indirect and consequential damages.
Sort Transform is disabled by default and can be enabled by defining the
preprocessor macro LIBBSC_SORT_TRANSFORM_SUPPORT at compile time.
Back 40 Computing:
------------------
The Back 40 Computing project is a collection of fast, efficient GPU
primitives. This project implements a very fast, efficient radix sorting
method for CUDA-capable devices. libbsc uses the Back 40 Computing
primitives for constructing Sort Transform for CUDA-capable devices.
The Back 40 Computing copyright is as follows:
Copyright 2010-2011 Duane Merrill
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
See also the Back 40 Computing web site:
http://code.google.com/p/back40computing/ for more information.
libdivsufsort:
--------------
The libdivsufsort project provides a fast, lightweight, and robust
C API library to construct the suffix array and the Burrows-Wheeler
transformed string for any input string of a constant-size alphabet.
libbsc uses libdivsufsort for constructing Burrows-Wheeler transform.
The libdivsufsort copyright is as follows:
Copyright (c) 2003-2008 Yuta Mori All Rights Reserved.
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
See also the libdivsufsort web site:
http://libdivsufsort.googlecode.com/ for more information.

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bsc/VERSION Normal file
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3.1.0

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Block Sorting Compressor */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
/*--
Sort Transform is patented by Michael Schindler under US patent 6,199,064.
However for research purposes this algorithm is included in this software.
So if you are of the type who should worry about this (making money) worry away.
The author shall have no liability with respect to the infringement of
copyrights, trade secrets or any patents by this software. In no event will
the author be liable for any lost revenue or profits or other special,
indirect and consequential damages.
Sort Transform is disabled by default and can be enabled by defining the
preprocessor macro LIBBSC_SORT_TRANSFORM_SUPPORT at compile time.
--*/
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <math.h>
#include <memory.h>
#include "libbsc/libbsc.h"
#include "libbsc/filters.h"
#include "libbsc/platform/platform.h"
#pragma pack(push, 1)
#define LIBBSC_CONTEXTS_AUTODETECT 3
unsigned char bscFileSign[4] = {'b', 's', 'c', 0x31};
typedef struct BSC_BLOCK_HEADER
{
long long blockOffset;
signed char recordSize;
signed char sortingContexts;
} BSC_BLOCK_HEADER;
#pragma pack(pop)
int paramBlockSize = 25 * 1024 * 1024;
int paramBlockSorter = LIBBSC_BLOCKSORTER_BWT;
int paramCoder = LIBBSC_CODER_QLFC_STATIC;
int paramSortingContexts = LIBBSC_CONTEXTS_FOLLOWING;
int paramEnableParallelProcessing = 1;
int paramEnableMultiThreading = 1;
int paramEnableFastMode = 1;
int paramEnableLargePages = 0;
int paramEnableCUDA = 0;
int paramEnableSegmentation = 0;
int paramEnableReordering = 0;
int paramEnableLZP = 1;
int paramLZPHashSize = 16;
int paramLZPMinLen = 128;
int paramFeatures()
{
int features =
(paramEnableFastMode ? LIBBSC_FEATURE_FASTMODE : LIBBSC_FEATURE_NONE) |
(paramEnableMultiThreading ? LIBBSC_FEATURE_MULTITHREADING : LIBBSC_FEATURE_NONE) |
(paramEnableLargePages ? LIBBSC_FEATURE_LARGEPAGES : LIBBSC_FEATURE_NONE) |
(paramEnableCUDA ? LIBBSC_FEATURE_CUDA : LIBBSC_FEATURE_NONE)
;
return features;
}
#if defined(__GNUC__) && (defined(_GLIBCXX_USE_LFS) || defined(__MINGW32__))
#define BSC_FSEEK fseeko64
#define BSC_FTELL ftello64
#define BSC_FILEOFFSET off64_t
#elif defined(_MSC_VER) && _MSC_VER >= 1400
#define BSC_FSEEK _fseeki64
#define BSC_FTELL _ftelli64
#define BSC_FILEOFFSET __int64
#else
#define BSC_FSEEK fseek
#define BSC_FTELL ftell
#define BSC_FILEOFFSET long
#endif
#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) || defined(__BORLANDC__) || defined(_MSC_VER)
#include <windows.h>
double BSC_CLOCK() { return 0.001 * GetTickCount(); }
#elif defined (__unix) || defined (__linux__) || defined (__QNX__) || defined (_AIX) || defined (__NetBSD__) || defined(macintosh) || defined (_MAC)
#include <sys/time.h>
double BSC_CLOCK() { timeval tv; gettimeofday(&tv, 0); return tv.tv_sec + tv.tv_usec * 0.000001; }
#else
double BSC_CLOCK() { return (double)clock() / CLOCKS_PER_SEC; }
#endif
int segmentedBlock[256];
void Compression(char * argv[])
{
if (!paramEnableLZP)
{
paramLZPHashSize = 0;
paramLZPMinLen = 0;
}
FILE * fInput = fopen(argv[2], "rb");
if (fInput == NULL)
{
fprintf(stderr, "Can't open input file: %s!\n", argv[2]);
exit(1);
}
FILE * fOutput = fopen(argv[3], "wb");
if (fOutput == NULL)
{
fprintf(stderr, "Can't create output file: %s!\n", argv[3]);
exit(1);
}
if (BSC_FSEEK(fInput, 0, SEEK_END))
{
fprintf(stderr, "IO error on file: %s!\n", argv[2]);
exit(1);
}
BSC_FILEOFFSET fileSize = BSC_FTELL(fInput);
if (fileSize < 0)
{
fprintf(stderr, "IO error on file: %s!\n", argv[2]);
exit(1);
}
if (BSC_FSEEK(fInput, 0, SEEK_SET))
{
fprintf(stderr, "IO error on file: %s!\n", argv[2]);
exit(1);
}
if (paramBlockSize > fileSize)
{
paramBlockSize = (int)fileSize;
}
if (fwrite(bscFileSign, sizeof(bscFileSign), 1, fOutput) != 1)
{
fprintf(stderr, "IO error on file: %s!\n", argv[3]);
exit(1);
}
int nBlocks = paramBlockSize > 0 ? (int)((fileSize + paramBlockSize - 1) / paramBlockSize) : 0;
if (fwrite(&nBlocks, sizeof(nBlocks), 1, fOutput) != 1)
{
fprintf(stderr, "IO error on file: %s!\n", argv[3]);
exit(1);
}
double startTime = BSC_CLOCK();
#ifdef LIBBSC_OPENMP
int numThreads = 1;
if (paramEnableParallelProcessing)
{
numThreads = omp_get_max_threads();
if (numThreads <= nBlocks) paramEnableMultiThreading = 0;
if (numThreads >= nBlocks) numThreads = nBlocks;
}
#endif
int segmentationStart = 0, segmentationEnd = 0;
#ifdef LIBBSC_OPENMP
#pragma omp parallel num_threads(numThreads) if(numThreads > 1)
#endif
{
unsigned char * buffer = (unsigned char *)bsc_malloc(paramBlockSize + LIBBSC_HEADER_SIZE);
if (buffer == NULL)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
fprintf(stderr, "Not enough memory! Please check README file for more information.\n");
exit(2);
}
}
while (true)
{
BSC_FILEOFFSET blockOffset = 0;
int dataSize = 0;
#ifdef LIBBSC_OPENMP
#pragma omp critical(input)
#endif
{
if ((feof(fInput) == 0) && (BSC_FTELL(fInput) != fileSize))
{
#ifdef LIBBSC_OPENMP
#pragma omp master
#endif
{
double progress = (100.0 * (double)BSC_FTELL(fInput)) / fileSize;
fprintf(stdout, "\rCompressing %.55s(%02d%%)", argv[2], (int)progress);
fflush(stdout);
}
blockOffset = BSC_FTELL(fInput);
int currentBlockSize = paramBlockSize;
if (paramEnableSegmentation)
{
if (segmentationEnd - segmentationStart > 1) currentBlockSize = segmentedBlock[segmentationStart];
}
dataSize = (int)fread(buffer, 1, currentBlockSize, fInput);
if (dataSize <= 0)
{
fprintf(stderr, "\nIO error on file: %s!\n", argv[2]);
exit(1);
}
if (paramEnableSegmentation)
{
bool bSegmentation = false;
if (segmentationStart == segmentationEnd) bSegmentation = true;
if ((segmentationEnd - segmentationStart == 1) && (dataSize != segmentedBlock[segmentationStart])) bSegmentation = true;
if (bSegmentation)
{
segmentationStart = 0; segmentationEnd = bsc_detect_segments(buffer, dataSize, segmentedBlock, 256, paramFeatures());
if (segmentationEnd <= LIBBSC_NO_ERROR)
{
switch (segmentationEnd)
{
case LIBBSC_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough memory! Please check README file for more information.\n"); break;
default : fprintf(stderr, "\nInternal program error, please contact the author!\n");
}
exit(2);
}
}
int newDataSize = segmentedBlock[segmentationStart++];
if (dataSize != newDataSize)
{
BSC_FILEOFFSET pos = BSC_FTELL(fInput) - dataSize + newDataSize;
BSC_FSEEK(fInput, pos, SEEK_SET);
dataSize = newDataSize;
}
}
}
}
if (dataSize == 0) break;
signed char recordSize = 1;
if (paramEnableReordering)
{
recordSize = bsc_detect_recordsize(buffer, dataSize, paramFeatures());
if (recordSize < LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
switch (recordSize)
{
case LIBBSC_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough memory! Please check README file for more information.\n"); break;
default : fprintf(stderr, "\nInternal program error, please contact the author!\n");
}
exit(2);
}
}
if (recordSize > 1)
{
int result = bsc_reorder_forward(buffer, dataSize, recordSize, paramFeatures());
if (result != LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
switch (result)
{
case LIBBSC_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough memory! Please check README file for more information.\n"); break;
default : fprintf(stderr, "\nInternal program error, please contact the author!\n");
}
exit(2);
}
}
}
}
signed char sortingContexts = paramSortingContexts;
if (paramSortingContexts == LIBBSC_CONTEXTS_AUTODETECT)
{
sortingContexts = bsc_detect_contextsorder(buffer, dataSize, paramFeatures());
if (sortingContexts < LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
switch (sortingContexts)
{
case LIBBSC_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough memory!\n"); break;
default : fprintf(stderr, "\nInternal program error, please contact the author!\n");
}
exit(2);
}
}
}
if (sortingContexts == LIBBSC_CONTEXTS_PRECEDING)
{
int result = bsc_reverse_block(buffer, dataSize, paramFeatures());
if (result != LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
fprintf(stderr, "\nInternal program error, please contact the author!\n");
exit(2);
}
}
}
int blockSize = bsc_compress(buffer, buffer, dataSize, paramLZPHashSize, paramLZPMinLen, paramBlockSorter, paramCoder, paramFeatures());
if (blockSize == LIBBSC_NOT_COMPRESSIBLE)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(input)
#endif
{
sortingContexts = LIBBSC_CONTEXTS_FOLLOWING; recordSize = 1;
BSC_FILEOFFSET pos = BSC_FTELL(fInput);
{
BSC_FSEEK(fInput, blockOffset, SEEK_SET);
if (dataSize != (int)fread(buffer, 1, dataSize, fInput))
{
fprintf(stderr, "\nInternal program error, please contact the author!\n");
exit(2);
}
}
BSC_FSEEK(fInput, pos, SEEK_SET);
}
blockSize = bsc_store(buffer, buffer, dataSize, paramFeatures());
}
if (blockSize < LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
switch (blockSize)
{
case LIBBSC_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough memory! Please check README file for more information.\n"); break;
case LIBBSC_NOT_SUPPORTED : fprintf(stderr, "\nSpecified compression method is not supported on this platform!\n"); break;
case LIBBSC_GPU_ERROR : fprintf(stderr, "\nGeneral GPU failure! Please check README file for more information.\n"); break;
case LIBBSC_GPU_NOT_SUPPORTED : fprintf(stderr, "\nYour GPU is not supported! Please check README file for more information.\n"); break;
case LIBBSC_GPU_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough GPU memory! Please check README file for more information.\n"); break;
default : fprintf(stderr, "\nInternal program error, please contact the author!\n");
}
exit(2);
}
}
#ifdef LIBBSC_OPENMP
#pragma omp critical(output)
#endif
{
BSC_BLOCK_HEADER header = {blockOffset, recordSize, sortingContexts};
if (fwrite(&header, sizeof(BSC_BLOCK_HEADER), 1, fOutput) != 1)
{
fprintf(stderr, "\nIO error on file: %s!\n", argv[3]);
exit(1);
}
if ((int)fwrite(buffer, 1, blockSize, fOutput) != blockSize)
{
fprintf(stderr, "\nIO error on file: %s!\n", argv[3]);
exit(1);
}
}
}
bsc_free(buffer);
}
fprintf(stdout, "\r%.55s compressed %.0f into %.0f in %.3f seconds.\n", argv[2], (double)fileSize, (double)BSC_FTELL(fOutput), BSC_CLOCK() - startTime);
fclose(fInput); fclose(fOutput);
}
void Decompression(char * argv[])
{
FILE * fInput = fopen(argv[2], "rb");
if (fInput == NULL)
{
fprintf(stderr, "Can't open input file: %s!\n", argv[2]);
exit(1);
}
FILE * fOutput = fopen(argv[3], "wb");
if (fOutput == NULL)
{
fprintf(stderr, "Can't create output file: %s!\n", argv[3]);
exit(1);
}
if (BSC_FSEEK(fInput, 0, SEEK_END))
{
fprintf(stderr, "IO error on file: %s!\n", argv[2]);
exit(1);
}
BSC_FILEOFFSET fileSize = BSC_FTELL(fInput);
if (fileSize < 0)
{
fprintf(stderr, "IO error on file: %s!\n", argv[2]);
exit(1);
}
if (BSC_FSEEK(fInput, 0, SEEK_SET))
{
fprintf(stderr, "IO error on file: %s!\n", argv[2]);
exit(1);
}
unsigned char inputFileSign[sizeof(bscFileSign)];
if (fread(inputFileSign, sizeof(bscFileSign), 1, fInput) != 1)
{
fprintf(stderr, "This is not bsc archive!\n");
exit(1);
}
if (memcmp(inputFileSign, bscFileSign, sizeof(bscFileSign)) != 0)
{
fprintf(stderr, "This is not bsc archive or invalid compression method!\n");
exit(2);
}
int nBlocks = 0;
if (fread(&nBlocks, sizeof(nBlocks), 1, fInput) != 1)
{
fprintf(stderr, "This is not bsc archive!\n");
exit(1);
}
double startTime = BSC_CLOCK();
#ifdef LIBBSC_OPENMP
int numThreads = 1;
if (paramEnableParallelProcessing)
{
numThreads = omp_get_max_threads();
if (numThreads <= nBlocks) paramEnableMultiThreading = 0;
if (numThreads >= nBlocks) numThreads = nBlocks;
}
#pragma omp parallel num_threads(numThreads) if(numThreads > 1)
#endif
{
int bufferSize = -1; unsigned char * buffer = NULL;
while (true)
{
BSC_FILEOFFSET blockOffset = 0;
signed char sortingContexts = 0;
signed char recordSize = 0;
int blockSize = 0;
int dataSize = 0;
#ifdef LIBBSC_OPENMP
#pragma omp critical(input)
#endif
{
if ((feof(fInput) == 0) && (BSC_FTELL(fInput) != fileSize))
{
#ifdef LIBBSC_OPENMP
#pragma omp master
#endif
{
double progress = (100.0 * (double)BSC_FTELL(fInput)) / fileSize;
fprintf(stdout, "\rDecompressing %.55s(%02d%%)", argv[2], (int)progress);
fflush(stdout);
}
BSC_BLOCK_HEADER header = {0, 0, 0};
if (fread(&header, sizeof(BSC_BLOCK_HEADER), 1, fInput) != 1)
{
fprintf(stderr, "\nUnexpected end of file: %s!\n", argv[2]);
exit(1);
}
recordSize = header.recordSize;
if (recordSize < 1)
{
fprintf(stderr, "\nThis is not bsc archive or invalid compression method!\n");
exit(2);
}
sortingContexts = header.sortingContexts;
if ((sortingContexts != LIBBSC_CONTEXTS_FOLLOWING) && (sortingContexts != LIBBSC_CONTEXTS_PRECEDING))
{
fprintf(stderr, "\nThis is not bsc archive or invalid compression method!\n");
exit(2);
}
blockOffset = (BSC_FILEOFFSET)header.blockOffset;
unsigned char bscBlockHeader[LIBBSC_HEADER_SIZE];
if (fread(bscBlockHeader, LIBBSC_HEADER_SIZE, 1, fInput) != 1)
{
fprintf(stderr, "\nUnexpected end of file: %s!\n", argv[2]);
exit(1);
}
if (bsc_block_info(bscBlockHeader, LIBBSC_HEADER_SIZE, &blockSize, &dataSize, paramFeatures()) != LIBBSC_NO_ERROR)
{
fprintf(stderr, "\nThis is not bsc archive or invalid compression method!\n");
exit(2);
}
if ((blockSize > bufferSize) || (dataSize > bufferSize))
{
if (blockSize > bufferSize) bufferSize = blockSize;
if (dataSize > bufferSize) bufferSize = dataSize;
if (buffer != NULL) bsc_free(buffer); buffer = (unsigned char *)bsc_malloc(bufferSize);
}
if (buffer == NULL)
{
fprintf(stderr, "\nNot enough memory! Please check README file for more information.\n");
exit(2);
}
memcpy(buffer, bscBlockHeader, LIBBSC_HEADER_SIZE);
if (fread(buffer + LIBBSC_HEADER_SIZE, blockSize - LIBBSC_HEADER_SIZE, 1, fInput) != 1)
{
fprintf(stderr, "\nUnexpected end of file: %s!\n", argv[2]);
exit(1);
}
}
}
if (dataSize == 0) break;
int result = bsc_decompress(buffer, blockSize, buffer, dataSize, paramFeatures());
if (result < LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
switch (result)
{
case LIBBSC_DATA_CORRUPT : fprintf(stderr, "\nThe compressed data is corrupted!\n"); break;
case LIBBSC_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough memory! Please check README file for more information.\n"); break;
case LIBBSC_GPU_ERROR : fprintf(stderr, "\nGeneral GPU failure! Please check README file for more information.\n"); break;
case LIBBSC_GPU_NOT_SUPPORTED : fprintf(stderr, "\nYour GPU is not supported! Please check README file for more information.\n"); break;
case LIBBSC_GPU_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough GPU memory! Please check README file for more information.\n"); break;
default : fprintf(stderr, "\nInternal program error, please contact the author!\n");
}
exit(2);
}
}
if (sortingContexts == LIBBSC_CONTEXTS_PRECEDING)
{
result = bsc_reverse_block(buffer, dataSize, paramFeatures());
if (result != LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
fprintf(stderr, "\nInternal program error, please contact the author!\n");
exit(2);
}
}
}
if (recordSize > 1)
{
result = bsc_reorder_reverse(buffer, dataSize, recordSize, paramFeatures());
if (result != LIBBSC_NO_ERROR)
{
#ifdef LIBBSC_OPENMP
#pragma omp critical(print)
#endif
{
switch (result)
{
case LIBBSC_NOT_ENOUGH_MEMORY : fprintf(stderr, "\nNot enough memory! Please check README file for more information.\n"); break;
default : fprintf(stderr, "\nInternal program error, please contact the author!\n");
}
exit(2);
}
}
}
#ifdef LIBBSC_OPENMP
#pragma omp critical(output)
#endif
{
if (BSC_FSEEK(fOutput, blockOffset, SEEK_SET))
{
fprintf(stderr, "\nIO error on file: %s!\n", argv[3]);
exit(1);
}
if ((int)fwrite(buffer, 1, dataSize, fOutput) != dataSize)
{
fprintf(stderr, "\nIO error on file: %s!\n", argv[3]);
exit(1);
}
}
}
if (buffer != NULL) bsc_free(buffer);
}
if (BSC_FSEEK(fOutput, 0, SEEK_END))
{
fprintf(stderr, "IO error on file: %s!\n", argv[3]);
exit(1);
}
fprintf(stdout, "\r%.55s decompressed %.0f into %.0f in %.3f seconds.\n", argv[2], (double)fileSize, (double)BSC_FTELL(fOutput), BSC_CLOCK() - startTime);
fclose(fInput); fclose(fOutput);
}
void ShowUsage(void)
{
fprintf(stdout, "Usage: bsc <e|d> inputfile outputfile <options>\n\n");
fprintf(stdout, "Block sorting options:\n");
fprintf(stdout, " -b<size> Block size in megabytes, default: -b25\n");
fprintf(stdout, " minimum: -b1, maximum: -b1024\n");
fprintf(stdout, " -m<algo> Block sorting algorithm, default: -m0\n");
fprintf(stdout, " -m0 Burrows Wheeler Transform (default)\n");
#ifdef LIBBSC_SORT_TRANSFORM_SUPPORT
fprintf(stdout, " -m3..8 Sort Transform of order n\n");
#endif
fprintf(stdout, " -c<ctx> Contexts for sorting, default: -cf\n");
fprintf(stdout, " -cf Following contexts (default)\n");
fprintf(stdout, " -cp Preceding contexts\n");
fprintf(stdout, " -ca Autodetect (experimental)\n");
fprintf(stdout, " -e<algo> Entropy encoding algorithm, default: -e1\n");
fprintf(stdout, " -e1 Static Quantized Local Frequency Coding (default)\n");
fprintf(stdout, " -e2 Adaptive Quantized Local Frequency Coding (best compression)\n");
fprintf(stdout, "\nPreprocessing options:\n");
fprintf(stdout, " -p Disable all preprocessing techniques\n");
fprintf(stdout, " -s Enable segmentation (adaptive block size), default: disable\n");
fprintf(stdout, " -r Enable structured data reordering, default: disable\n");
fprintf(stdout, " -l Enable Lempel-Ziv preprocessing, default: enable\n");
fprintf(stdout, " -H<size> LZP dictionary size in bits, default: -H16\n");
fprintf(stdout, " minimum: -H10, maximum: -H28\n");
fprintf(stdout, " -M<size> LZP minimum match length, default: -M128\n");
fprintf(stdout, " minimum: -M4, maximum: -M255\n");
fprintf(stdout, "\nPlatform specific options:\n");
#ifdef LIBBSC_CUDA_SUPPORT
fprintf(stdout, " -G Enable Sort Transform acceleration on NVIDIA GPU, default: disable\n");
#endif
#ifdef _WIN32
fprintf(stdout, " -P Enable large 2MB RAM pages, default: disable\n");
#endif
#ifdef LIBBSC_OPENMP
fprintf(stdout, " -t Disable parallel blocks processing, default: enable\n");
fprintf(stdout, " -T Disable multi-core systems support, default: enable\n");
#endif
fprintf(stdout,"\nOptions may be combined into one, like -b128p -m5e1\n");
exit(0);
}
void ProcessSwitch(char * s)
{
if (*s == 0)
{
ShowUsage();
}
for (; *s != 0; )
{
switch (*s++)
{
case 'b':
{
char * strNum = s; while ((*s >= '0') && (*s <= '9')) s++;
paramBlockSize = atoi(strNum) * 1024 * 1024;
if ((paramBlockSize < 1024 * 1024) || (paramBlockSize > 1024 * 1024 * 1024)) ShowUsage();
break;
}
case 'm':
{
char * strNum = s; while ((*s >= '0') && (*s <= '9')) s++;
switch (atoi(strNum))
{
case 0 : paramBlockSorter = LIBBSC_BLOCKSORTER_BWT; break;
#ifdef LIBBSC_SORT_TRANSFORM_SUPPORT
case 3 : paramBlockSorter = LIBBSC_BLOCKSORTER_ST3; break;
case 4 : paramBlockSorter = LIBBSC_BLOCKSORTER_ST4; break;
case 5 : paramBlockSorter = LIBBSC_BLOCKSORTER_ST5; break;
case 6 : paramBlockSorter = LIBBSC_BLOCKSORTER_ST6; break;
case 7 : paramBlockSorter = LIBBSC_BLOCKSORTER_ST7; paramEnableCUDA = 1; break;
case 8 : paramBlockSorter = LIBBSC_BLOCKSORTER_ST8; paramEnableCUDA = 1; break;
#endif
default : ShowUsage();
}
break;
}
case 'c':
{
switch (*s++)
{
case 'f' : paramSortingContexts = LIBBSC_CONTEXTS_FOLLOWING; break;
case 'p' : paramSortingContexts = LIBBSC_CONTEXTS_PRECEDING; break;
case 'a' : paramSortingContexts = LIBBSC_CONTEXTS_AUTODETECT; break;
default : ShowUsage();
}
break;
}
case 'e':
{
switch (*s++)
{
case '1' : paramCoder = LIBBSC_CODER_QLFC_STATIC; break;
case '2' : paramCoder = LIBBSC_CODER_QLFC_ADAPTIVE; break;
default : ShowUsage();
}
break;
}
case 'H':
{
char * strNum = s; while ((*s >= '0') && (*s <= '9')) s++;
paramLZPHashSize = atoi(strNum);
if ((paramLZPHashSize < 10) || (paramLZPHashSize > 28)) ShowUsage();
break;
}
case 'M':
{
char * strNum = s; while ((*s >= '0') && (*s <= '9')) s++;
paramLZPMinLen = atoi(strNum);
if ((paramLZPMinLen < 4) || (paramLZPMinLen > 255)) ShowUsage();
break;
}
case 'l': paramEnableLZP = 1; break;
case 's': paramEnableSegmentation = 1; break;
case 'r': paramEnableReordering = 1; break;
case 'p': paramEnableLZP = paramEnableSegmentation = paramEnableReordering = 0; break;
#ifdef LIBBSC_OPENMP
case 't': paramEnableParallelProcessing = 0; break;
case 'T': paramEnableParallelProcessing = paramEnableMultiThreading = 0; break;
#endif
#ifdef LIBBSC_CUDA_SUPPORT
case 'G': paramEnableCUDA = 1; break;
#endif
#ifdef _WIN32
case 'P': paramEnableLargePages = 1; break;
#endif
default : ShowUsage();
}
}
}
void ProcessCommandline(int argc, char * argv[])
{
if (argc < 4 || strlen(argv[1]) != 1)
{
ShowUsage();
}
for (int i = 4; i < argc; ++i)
{
if (argv[i][0] == '-')
{
ProcessSwitch(&argv[i][1]);
}
else
{
ShowUsage();
}
}
}
int main(int argc, char * argv[])
{
fprintf(stdout, "This is bsc, Block Sorting Compressor. Version 3.1.0. 8 July 2012.\n");
fprintf(stdout, "Copyright (c) 2009-2012 Ilya Grebnov <Ilya.Grebnov@gmail.com>.\n\n");
#if defined(_OPENMP) && defined(__INTEL_COMPILER)
kmp_set_warnings_off();
#endif
ProcessCommandline(argc, argv);
if (bsc_init(paramFeatures()) != LIBBSC_NO_ERROR)
{
fprintf(stderr, "\nInternal program error, please contact the author!\n");
exit(2);
}
switch (*argv[1])
{
case 'e' : case 'E' : Compression(argv); break;
case 'd' : case 'D' : Decompression(argv); break;
default : ShowUsage();
}
return 0;
}
/*-----------------------------------------------------------*/
/* End bsc.cpp */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Adler-32 checksum functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <memory.h>
#include <string.h>
#include "adler32.h"
#include "../platform/platform.h"
#include "../libbsc.h"
#define BASE 65521UL
#define NMAX 5552
#define DO1(buf, i) { sum1 += (buf)[i]; sum2 += sum1; }
#define DO2(buf, i) DO1(buf, i); DO1(buf, i + 1);
#define DO4(buf, i) DO2(buf, i); DO2(buf, i + 2);
#define DO8(buf, i) DO4(buf, i); DO4(buf, i + 4);
#define DO16(buf) DO8(buf, 0); DO8(buf, 8);
#define MOD(a) a %= BASE
unsigned int bsc_adler32(const unsigned char * T, int n, int features)
{
unsigned int sum1 = 1;
unsigned int sum2 = 0;
while (n >= NMAX)
{
for (int i = 0; i < NMAX / 16; ++i)
{
DO16(T); T += 16;
}
MOD(sum1); MOD(sum2); n -= NMAX;
}
while (n >= 16)
{
DO16(T); T += 16; n -= 16;
}
while (n > 0)
{
DO1(T, 0); T += 1; n -= 1;
}
MOD(sum1); MOD(sum2);
return sum1 | (sum2 << 16);
}
/*-----------------------------------------------------------*/
/* End adler32.cpp */
/*-----------------------------------------------------------*/

59
bsc/libbsc/adler32/adler32.h Normal file
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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to Adler-32 checksum functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_ADLER32_H
#define _LIBBSC_ADLER32_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* Calculates Adler-32 checksum for input memory block.
* @param T - the input memory block of n bytes.
* @param n - the length of the input memory block.
* @param features - the set of additional features.
* @return the value of cyclic redundancy check.
*/
unsigned int bsc_adler32(const unsigned char * T, int n, int features);
#ifdef __cplusplus
}
#endif
#endif
/*-----------------------------------------------------------*/
/* End adler32.h */
/*-----------------------------------------------------------*/

404
bsc/libbsc/bwt/bwt.cpp Normal file
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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Burrows Wheeler Transform */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <memory.h>
#include "bwt.h"
#include "../platform/platform.h"
#include "../libbsc.h"
#include "divsufsort/divsufsort.h"
int bsc_bwt_encode(unsigned char * T, int n, unsigned char * num_indexes, int * indexes, int features)
{
int index = divbwt(T, T, NULL, n, num_indexes, indexes, features & LIBBSC_FEATURE_MULTITHREADING);
switch (index)
{
case -1 : return LIBBSC_BAD_PARAMETER;
case -2 : return LIBBSC_NOT_ENOUGH_MEMORY;
}
return index;
}
static int bsc_unbwt_mergedTL_serial(unsigned char * RESTRICT T, unsigned int * RESTRICT P, int n, int index)
{
unsigned int bucket[ALPHABET_SIZE];
memset(bucket, 0, ALPHABET_SIZE * sizeof(unsigned int));
for (int i = 0; i < index; ++i)
{
unsigned char c = T[i];
P[i] = ((bucket[c]++) << 8) | c;
}
for (int i = index; i < n; ++i)
{
unsigned char c = T[i];
P[i + 1] = ((bucket[c]++) << 8) | c;
}
for (int sum = 1, i = 0; i < ALPHABET_SIZE; ++i)
{
int tmp = sum; sum += bucket[i]; bucket[i] = tmp;
}
for (int p = 0, i = n - 1; i >= 0; --i)
{
unsigned int u = P[p];
unsigned char c = u & 0xff;
T[i] = c; p = (u >> 8) + bucket[c];
}
return LIBBSC_NO_ERROR;
}
#define BWT_NUM_FASTBITS (17)
static int bsc_unbwt_biPSI_serial(unsigned char * RESTRICT T, unsigned int * RESTRICT P, int n, int index)
{
if (int * RESTRICT bucket = (int *)bsc_zero_malloc(ALPHABET_SIZE * ALPHABET_SIZE * sizeof(int)))
{
if (unsigned short * RESTRICT fastbits = (unsigned short *)bsc_malloc((1 + (1 << BWT_NUM_FASTBITS)) * sizeof(unsigned short)))
{
int count[ALPHABET_SIZE]; memset(count, 0, ALPHABET_SIZE * sizeof(int));
int shift = 0; while ((n >> shift) > (1 << BWT_NUM_FASTBITS)) shift++;
for (int i = 0; i < n; ++i) count[T[i]]++;
for (int sum = 1, c = 0; c < ALPHABET_SIZE; ++c)
{
int tmp = sum; sum += count[c]; count[c] = tmp;
if (count[c] != sum)
{
int * RESTRICT bucket_p = &bucket[c << 8];
int hi = index; if (sum < hi) hi = sum;
for (int i = count[c]; i < hi; ++i) bucket_p[T[i]]++;
int lo = index + 1; if (count[c] > lo) lo = count[c];
for (int i = lo; i < sum; ++i) bucket_p[T[i - 1]]++;
}
}
int lastc = T[0];
for (int v = 0, sum = 1, c = 0; c < ALPHABET_SIZE; ++c)
{
if (c == lastc) sum++;
int * RESTRICT bucket_p = &bucket[c];
for (int d = 0; d < ALPHABET_SIZE; ++d)
{
int tmp = sum; sum += bucket_p[d << 8]; bucket_p[d << 8] = tmp;
if (bucket_p[d << 8] != sum)
{
for (; v <= ((sum - 1) >> shift); ++v) fastbits[v] = (c << 8) | d;
}
}
}
for (int i = 0; i < index; ++i)
{
unsigned char c = T[i];
int p = count[c]++;
if (p < index) P[bucket[(c << 8) | T[p ]]++] = i; else
if (p > index) P[bucket[(c << 8) | T[p - 1]]++] = i;
}
for (int i = index; i < n; ++i)
{
unsigned char c = T[i];
int p = count[c]++;
if (p < index) P[bucket[(c << 8) | T[p ]]++] = i + 1; else
if (p > index) P[bucket[(c << 8) | T[p - 1]]++] = i + 1;
}
for (int c = 0; c < ALPHABET_SIZE; ++c)
{
for (int d = 0; d < c; ++d)
{
int tmp = bucket[(d << 8) | c]; bucket[(d << 8) | c] = bucket[(c << 8) | d]; bucket[(c << 8) | d] = tmp;
}
}
for (int p = index, i = 1; i < n; i += 2)
{
int c = fastbits[p >> shift]; while (bucket[c] <= p) c++;
T[i - 1] = (unsigned char)(c >> 8); T[i] = (unsigned char)(c & 0xff);
p = P[p];
}
T[n - 1] = (unsigned char)lastc;
bsc_free(fastbits); bsc_free(bucket);
return LIBBSC_NO_ERROR;
}
bsc_free(bucket);
};
return LIBBSC_NOT_ENOUGH_MEMORY;
}
static int bsc_unbwt_reconstruct_serial(unsigned char * T, unsigned int * P, int n, int index)
{
if (n < 3 * 1024 * 1024) return bsc_unbwt_mergedTL_serial(T, P, n, index);
return bsc_unbwt_biPSI_serial(T, P, n, index);
}
#ifdef LIBBSC_OPENMP
static int bsc_unbwt_mergedTL_parallel(unsigned char * RESTRICT T, unsigned int * RESTRICT P, int n, int index, int * RESTRICT indexes)
{
unsigned int bucket[ALPHABET_SIZE];
memset(bucket, 0, ALPHABET_SIZE * sizeof(unsigned int));
for (int i = 0; i < index; ++i)
{
unsigned char c = T[i];
P[i] = ((bucket[c]++) << 8) | c;
}
for (int i = index; i < n; ++i)
{
unsigned char c = T[i];
P[i + 1] = ((bucket[c]++) << 8) | c;
}
for (int sum = 1, i = 0; i < ALPHABET_SIZE; ++i)
{
int tmp = sum; sum += bucket[i]; bucket[i] = tmp;
}
int mod = n / 8;
{
mod |= mod >> 1; mod |= mod >> 2;
mod |= mod >> 4; mod |= mod >> 8;
mod |= mod >> 16; mod >>= 1; mod++;
}
int nBlocks = 1 + (n - 1) / mod;
#pragma omp parallel for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int p = (blockId < nBlocks - 1) ? indexes[blockId] + 1 : 0;
int blockStart = (blockId < nBlocks - 1) ? mod * blockId + mod - 1 : n - 1;
int blockEnd = mod * blockId;
for (int i = blockStart; i >= blockEnd; --i)
{
unsigned int u = P[p];
unsigned char c = u & 0xff;
T[i] = c; p = (u >> 8) + bucket[c];
}
}
return LIBBSC_NO_ERROR;
}
static int bsc_unbwt_biPSI_parallel(unsigned char * RESTRICT T, unsigned int * RESTRICT P, int n, int index, int * RESTRICT indexes)
{
if (int * RESTRICT bucket = (int *)bsc_zero_malloc(ALPHABET_SIZE * ALPHABET_SIZE * sizeof(int)))
{
if (unsigned short * RESTRICT fastbits = (unsigned short *)bsc_malloc((1 + (1 << BWT_NUM_FASTBITS)) * sizeof(unsigned short)))
{
int count[ALPHABET_SIZE]; memset(count, 0, ALPHABET_SIZE * sizeof(int));
int shift = 0; while ((n >> shift) > (1 << BWT_NUM_FASTBITS)) shift++;
#pragma omp parallel
{
unsigned int count_local[ALPHABET_SIZE];
memset(count_local, 0, ALPHABET_SIZE * sizeof(unsigned int));
#pragma omp for schedule(static) nowait
for (int i = 0; i < n; ++i) count_local[T[i]]++;
#pragma omp critical
for (int c = 0; c < ALPHABET_SIZE; ++c) count[c] += count_local[c];
}
for (int sum = 1, c = 0; c < ALPHABET_SIZE; ++c)
{
int tmp = sum; sum += count[c]; count[c] = tmp;
}
#pragma omp parallel for schedule(static, 1)
for (int c = 0; c < ALPHABET_SIZE; ++c)
{
int start = count[c], end = (c + 1 < ALPHABET_SIZE) ? count[c + 1] : n + 1;
if (start != end)
{
int * RESTRICT bucket_p = &bucket[c << 8];
int hi = index; if (end < hi) hi = end;
for (int i = start; i < hi; ++i) bucket_p[T[i]]++;
int lo = index + 1; if (start > lo) lo = start;
for (int i = lo; i < end; ++i) bucket_p[T[i - 1]]++;
}
}
int lastc = T[0];
for (int v = 0, sum = 1, c = 0; c < ALPHABET_SIZE; ++c)
{
if (c == lastc) sum++;
int * RESTRICT bucket_p = &bucket[c];
for (int d = 0; d < ALPHABET_SIZE; ++d)
{
int tmp = sum; sum += bucket_p[d << 8]; bucket_p[d << 8] = tmp;
if (bucket_p[d << 8] != sum)
{
for (; v <= ((sum - 1) >> shift); ++v) fastbits[v] = (c << 8) | d;
}
}
}
for (int i = 0; i < index; ++i)
{
unsigned char c = T[i];
int p = count[c]++;
if (p < index) P[bucket[(c << 8) | T[p ]]++] = i; else
if (p > index) P[bucket[(c << 8) | T[p - 1]]++] = i;
}
for (int i = index; i < n; ++i)
{
unsigned char c = T[i];
int p = count[c]++;
if (p < index) P[bucket[(c << 8) | T[p ]]++] = i + 1; else
if (p > index) P[bucket[(c << 8) | T[p - 1]]++] = i + 1;
}
for (int c = 0; c < ALPHABET_SIZE; ++c)
{
for (int d = 0; d < c; ++d)
{
int tmp = bucket[(d << 8) | c]; bucket[(d << 8) | c] = bucket[(c << 8) | d]; bucket[(c << 8) | d] = tmp;
}
}
int mod = n / 8;
{
mod |= mod >> 1; mod |= mod >> 2;
mod |= mod >> 4; mod |= mod >> 8;
mod |= mod >> 16; mod >>= 1; mod++;
}
int nBlocks = 1 + (n - 1) / mod;
#pragma omp parallel for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int p = (blockId > 0 ) ? indexes[blockId - 1] + 1 : index;
int blockEnd = (blockId < nBlocks - 1) ? mod * blockId + mod : n;
int blockStart = mod * blockId;
if (blockEnd != n) blockEnd++; else T[n - 1] = (unsigned char)lastc;
for (int i = blockStart + 1; i < blockEnd; i += 2)
{
int c = fastbits[p >> shift]; while (bucket[c] <= p) c++;
T[i - 1] = (unsigned char)(c >> 8); T[i] = (unsigned char)(c & 0xff);
p = P[p];
}
}
bsc_free(fastbits); bsc_free(bucket);
return LIBBSC_NO_ERROR;
}
bsc_free(bucket);
};
return LIBBSC_NOT_ENOUGH_MEMORY;
}
static int bsc_unbwt_reconstruct_parallel(unsigned char * T, unsigned int * P, int n, int index, int * indexes)
{
if (n < 3 * 1024 * 1024) return bsc_unbwt_mergedTL_parallel(T, P, n, index, indexes);
return bsc_unbwt_biPSI_parallel(T, P, n, index, indexes);
}
#endif
int bsc_bwt_decode(unsigned char * T, int n, int index, unsigned char num_indexes, int * indexes, int features)
{
if ((T == NULL) || (n < 0) || (index <= 0) || (index > n))
{
return LIBBSC_BAD_PARAMETER;
}
if (n <= 1)
{
return LIBBSC_NO_ERROR;
}
if (unsigned int * P = (unsigned int *)bsc_malloc((n + 1) * sizeof(unsigned int)))
{
int result = LIBBSC_NO_ERROR;
#ifdef LIBBSC_OPENMP
int mod = n / 8;
{
mod |= mod >> 1; mod |= mod >> 2;
mod |= mod >> 4; mod |= mod >> 8;
mod |= mod >> 16; mod >>= 1;
}
if ((features & LIBBSC_FEATURE_MULTITHREADING) && (n >= 64 * 1024) && (num_indexes == (unsigned char)((n - 1) / (mod + 1))) && (indexes != NULL))
{
result = bsc_unbwt_reconstruct_parallel(T, P, n, index, indexes);
}
else
#endif
{
result = bsc_unbwt_reconstruct_serial(T, P, n, index);
}
bsc_free(P);
return result;
};
return LIBBSC_NOT_ENOUGH_MEMORY;
}
/*-----------------------------------------------------------*/
/* End bwt.cpp */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to Burrows Wheeler Transform */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_BWT_H
#define _LIBBSC_BWT_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* Constructs the burrows wheeler transformed string of a given string.
* @param T - the input/output string of n chars.
* @param n - the length of the given string.
* @param num_indexes - the length of secondary indexes array, can be NULL.
* @param indexes - the secondary indexes array, can be NULL.
* @param features - the set of additional features.
* @return the primary index if no error occurred, error code otherwise.
*/
int bsc_bwt_encode(unsigned char * T, int n, unsigned char * num_indexes, int * indexes, int features);
/**
* Reconstructs the original string from burrows wheeler transformed string.
* @param T - the input/output string of n chars.
* @param n - the length of the given string.
* @param index - the primary index.
* @param num_indexes - the length of secondary indexes array, can be 0.
* @param indexes - the secondary indexes array, can be NULL.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_bwt_decode(unsigned char * T, int n, int index, unsigned char num_indexes, int * indexes, int features);
#ifdef __cplusplus
}
#endif
#endif
/*-----------------------------------------------------------*/
/* End bwt.h */
/*-----------------------------------------------------------*/

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/*
* divsufsort.h for libdivsufsort-lite
* Copyright (c) 2003-2008 Yuta Mori All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef _DIVSUFSORT_H
#define _DIVSUFSORT_H 1
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/*- Prototypes -*/
/**
* Constructs the suffix array of a given string.
* @param T[0..n-1] The input string.
* @param SA[0..n-1] The output array of suffixes.
* @param n The length of the given string.
* @param openMP enables OpenMP optimization.
* @return 0 if no error occurred, -1 or -2 otherwise.
*/
int
divsufsort(const unsigned char *T, int *SA, int n, int openMP);
/**
* Constructs the burrows-wheeler transformed string of a given string.
* @param T[0..n-1] The input string.
* @param U[0..n-1] The output string. (can be T)
* @param A[0..n-1] The temporary array. (can be NULL)
* @param n The length of the given string.
* @param num_indexes The length of secondary indexes array. (can be NULL)
* @param indexes The secondary indexes array. (can be NULL)
* @param openMP enables OpenMP optimization.
* @return The primary index if no error occurred, -1 or -2 otherwise.
*/
int
divbwt(const unsigned char *T, unsigned char *U, int *A, int n, unsigned char * num_indexes, int * indexes, int openMP);
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif /* _DIVSUFSORT_H */

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Second stage encoding functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <memory.h>
#include "coder.h"
#include "../libbsc.h"
#include "../platform/platform.h"
#include "qlfc/qlfc.h"
int bsc_coder_init(int features)
{
int result = LIBBSC_NO_ERROR;
if (result == LIBBSC_NO_ERROR) result = bsc_qlfc_init(features);
return result;
}
static INLINE int bsc_coder_num_blocks(int n)
{
if (n < 256 * 1024) return 1;
if (n < 4 * 1024 * 1024) return 2;
if (n < 16 * 1024 * 1024) return 4;
return 8;
}
int bsc_coder_encode_block(const unsigned char * input, unsigned char * output, int inputSize, int outputSize, int coder)
{
if (coder == LIBBSC_CODER_QLFC_STATIC) return bsc_qlfc_static_encode_block (input, output, inputSize, outputSize);
if (coder == LIBBSC_CODER_QLFC_ADAPTIVE) return bsc_qlfc_adaptive_encode_block(input, output, inputSize, outputSize);
return LIBBSC_BAD_PARAMETER;
}
void bsc_coder_split_blocks(const unsigned char * input, int n, int nBlocks, int * blockStart, int * blockSize)
{
int rankSize = 0;
for (int i = 1; i < n; i += 32)
{
if (input[i] != input[i - 1]) rankSize++;
}
if (rankSize > nBlocks)
{
int blockRankSize = rankSize / nBlocks;
blockStart[0] = 0; rankSize = 0;
for (int id = 0, i = 1; i < n; i += 32)
{
if (input[i] != input[i - 1])
{
rankSize++;
if (rankSize == blockRankSize)
{
rankSize = 0;
blockSize[id] = i - blockStart[id];
id++; blockStart[id] = i;
if (id == nBlocks - 1) break;
}
}
}
blockSize[nBlocks - 1] = n - blockStart[nBlocks - 1];
}
else
{
for (int p = 0; p < nBlocks; ++p)
{
blockStart[p] = (n / nBlocks) * p;
blockSize[p] = (p != nBlocks - 1) ? n / nBlocks : n - (n / nBlocks) * (nBlocks - 1);
}
}
}
int bsc_coder_compress_serial(const unsigned char * input, unsigned char * output, int n, int coder)
{
if (bsc_coder_num_blocks(n) == 1)
{
int result = bsc_coder_encode_block(input, output + 1, n, n - 1, coder);
if (result >= LIBBSC_NO_ERROR) result = (output[0] = 1, result + 1);
return result;
}
int compressedStart[ALPHABET_SIZE];
int compressedSize[ALPHABET_SIZE];
int nBlocks = bsc_coder_num_blocks(n);
int outputPtr = 1 + 8 * nBlocks;
bsc_coder_split_blocks(input, n, nBlocks, compressedStart, compressedSize);
output[0] = nBlocks;
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int inputStart = compressedStart[blockId];
int inputSize = compressedSize[blockId];
int outputSize = inputSize; if (outputSize > n - outputPtr) outputSize = n - outputPtr;
int result = bsc_coder_encode_block(input + inputStart, output + outputPtr, inputSize, outputSize, coder);
if (result < LIBBSC_NO_ERROR)
{
if (outputPtr + inputSize >= n) return LIBBSC_NOT_COMPRESSIBLE;
result = inputSize; memcpy(output + outputPtr, input + inputStart, inputSize);
}
*(int *)(output + 1 + 8 * blockId + 0) = inputSize;
*(int *)(output + 1 + 8 * blockId + 4) = result;
outputPtr += result;
}
return outputPtr;
}
#ifdef LIBBSC_OPENMP
int bsc_coder_compress_parallel(const unsigned char * input, unsigned char * output, int n, int coder)
{
if (unsigned char * buffer = (unsigned char *)bsc_malloc(n * sizeof(unsigned char)))
{
int compressionResult[ALPHABET_SIZE];
int compressedStart[ALPHABET_SIZE];
int compressedSize[ALPHABET_SIZE];
int nBlocks = bsc_coder_num_blocks(n);
int result = LIBBSC_NO_ERROR;
int numThreads = omp_get_max_threads();
if (numThreads > nBlocks) numThreads = nBlocks;
output[0] = nBlocks;
#pragma omp parallel num_threads(numThreads) if(numThreads > 1)
{
if (omp_get_num_threads() == 1)
{
result = bsc_coder_compress_serial(input, output, n, coder);
}
else
{
#pragma omp single
{
bsc_coder_split_blocks(input, n, nBlocks, compressedStart, compressedSize);
}
#pragma omp for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int blockStart = compressedStart[blockId];
int blockSize = compressedSize[blockId];
compressionResult[blockId] = bsc_coder_encode_block(input + blockStart, buffer + blockStart, blockSize, blockSize, coder);
if (compressionResult[blockId] < LIBBSC_NO_ERROR) compressionResult[blockId] = blockSize;
*(int *)(output + 1 + 8 * blockId + 0) = blockSize;
*(int *)(output + 1 + 8 * blockId + 4) = compressionResult[blockId];
}
#pragma omp single
{
result = 1 + 8 * nBlocks;
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
result += compressionResult[blockId];
}
if (result >= n) result = LIBBSC_NOT_COMPRESSIBLE;
}
if (result >= LIBBSC_NO_ERROR)
{
#pragma omp for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int blockStart = compressedStart[blockId];
int blockSize = compressedSize[blockId];
int outputPtr = 1 + 8 * nBlocks;
for (int p = 0; p < blockId; ++p) outputPtr += compressionResult[p];
if (compressionResult[blockId] != blockSize)
{
memcpy(output + outputPtr, buffer + blockStart, compressionResult[blockId]);
}
else
{
memcpy(output + outputPtr, input + blockStart, compressionResult[blockId]);
}
}
}
}
}
bsc_free(buffer);
return result;
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
#endif
int bsc_coder_compress(const unsigned char * input, unsigned char * output, int n, int coder, int features)
{
if ((coder != LIBBSC_CODER_QLFC_STATIC) && (coder != LIBBSC_CODER_QLFC_ADAPTIVE))
{
return LIBBSC_BAD_PARAMETER;
}
#ifdef LIBBSC_OPENMP
if ((bsc_coder_num_blocks(n) != 1) && (features & LIBBSC_FEATURE_MULTITHREADING))
{
return bsc_coder_compress_parallel(input, output, n, coder);
}
#endif
return bsc_coder_compress_serial(input, output, n, coder);
}
int bsc_coder_decode_block(const unsigned char * input, unsigned char * output, int coder)
{
if (coder == LIBBSC_CODER_QLFC_STATIC) return bsc_qlfc_static_decode_block (input, output);
if (coder == LIBBSC_CODER_QLFC_ADAPTIVE) return bsc_qlfc_adaptive_decode_block(input, output);
return LIBBSC_BAD_PARAMETER;
}
int bsc_coder_decompress(const unsigned char * input, unsigned char * output, int coder, int features)
{
if ((coder != LIBBSC_CODER_QLFC_STATIC) && (coder != LIBBSC_CODER_QLFC_ADAPTIVE))
{
return LIBBSC_BAD_PARAMETER;
}
int nBlocks = input[0];
if (nBlocks == 1)
{
return bsc_coder_decode_block(input + 1, output, coder);
}
int decompressionResult[ALPHABET_SIZE];
#ifdef LIBBSC_OPENMP
if (features & LIBBSC_FEATURE_MULTITHREADING)
{
#pragma omp parallel for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int inputPtr = 0; for (int p = 0; p < blockId; ++p) inputPtr += *(int *)(input + 1 + 8 * p + 4);
int outputPtr = 0; for (int p = 0; p < blockId; ++p) outputPtr += *(int *)(input + 1 + 8 * p + 0);
inputPtr += 1 + 8 * nBlocks;
int inputSize = *(int *)(input + 1 + 8 * blockId + 4);
int outputSize = *(int *)(input + 1 + 8 * blockId + 0);
if (inputSize != outputSize)
{
decompressionResult[blockId] = bsc_coder_decode_block(input + inputPtr, output + outputPtr, coder);
}
else
{
decompressionResult[blockId] = inputSize; memcpy(output + outputPtr, input + inputPtr, inputSize);
}
}
}
else
#endif
{
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int inputPtr = 0; for (int p = 0; p < blockId; ++p) inputPtr += *(int *)(input + 1 + 8 * p + 4);
int outputPtr = 0; for (int p = 0; p < blockId; ++p) outputPtr += *(int *)(input + 1 + 8 * p + 0);
inputPtr += 1 + 8 * nBlocks;
int inputSize = *(int *)(input + 1 + 8 * blockId + 4);
int outputSize = *(int *)(input + 1 + 8 * blockId + 0);
if (inputSize != outputSize)
{
decompressionResult[blockId] = bsc_coder_decode_block(input + inputPtr, output + outputPtr, coder);
}
else
{
decompressionResult[blockId] = inputSize; memcpy(output + outputPtr, input + inputPtr, inputSize);
}
}
}
int dataSize = 0, result = LIBBSC_NO_ERROR;
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
if (decompressionResult[blockId] < LIBBSC_NO_ERROR) result = decompressionResult[blockId];
dataSize += decompressionResult[blockId];
}
return (result == LIBBSC_NO_ERROR) ? dataSize : result;
}
/*-----------------------------------------------------------*/
/* End coder.cpp */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to second stage encoding functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_CODER_H
#define _LIBBSC_CODER_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* You should call this function before you call any of the other functions in coder.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_coder_init(int features);
/**
* Compress a memory block using Quantized Local Frequency Coding.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n bytes.
* @param n - the length of the input memory block.
* @param coder - the entropy coding algorithm.
* @param features - the set of additional features.
* @return the length of compressed memory block if no error occurred, error code otherwise.
*/
int bsc_coder_compress(const unsigned char * input, unsigned char * output, int n, int coder, int features);
/**
* Decompress a memory block using Quantized Local Frequency Coding.
* @param input - the input memory block.
* @param output - the output memory block.
* @param coder - the entropy coding algorithm.
* @param features - the set of additional features.
* @return the length of decompressed memory block if no error occurred, error code otherwise.
*/
int bsc_coder_decompress(const unsigned char * input, unsigned char * output, int coder, int features);
#ifdef __cplusplus
}
#endif
#endif
/*-----------------------------------------------------------*/
/* End coder.h */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Probability counter and logistic mixer */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_CODER_PREDICTOR_H
#define _LIBBSC_CODER_PREDICTOR_H
#include "../../platform/platform.h"
#include "tables.h"
struct ProbabilityCounter
{
public:
static INLINE void UpdateBit0(short & probability, const int threshold, const int adaptationRate)
{
probability = probability + (((4096 - threshold - probability) * adaptationRate) >> 12);
};
static INLINE void UpdateBit1(short & probability, const int threshold, const int adaptationRate)
{
probability = probability - (((probability - threshold) * adaptationRate) >> 12);
};
};
struct ProbabilityMixer
{
private:
short stretchedProbability0;
short stretchedProbability1;
short stretchedProbability2;
int mixedProbability;
int index;
short probabilityMap[17];
int weight0;
int weight1;
int weight2;
public:
INLINE void Init()
{
weight0 = weight1 = 2048 << 5; weight2 = 0;
for (int p = 0; p < 17; ++p)
{
probabilityMap[p] = bsc_squash((p - 8) * 256);
}
}
INLINE int Mixup(const int probability0, const int probability1, const int probability2)
{
stretchedProbability0 = bsc_stretch(probability0);
stretchedProbability1 = bsc_stretch(probability1);
stretchedProbability2 = bsc_stretch(probability2);
short stretchedProbability = (stretchedProbability0 * weight0 + stretchedProbability1 * weight1 + stretchedProbability2 * weight2) >> 17;
if (stretchedProbability < -2047) stretchedProbability = -2047;
if (stretchedProbability > 2047) stretchedProbability = 2047;
index = (stretchedProbability + 2048) >> 8;
const int weight = stretchedProbability & 255;
const int probability = bsc_squash(stretchedProbability);
const int mappedProbability = probabilityMap[index] + (((probabilityMap[index + 1] - probabilityMap[index]) * weight) >> 8);
return mixedProbability = (3 * probability + mappedProbability) >> 2;
};
INLINE int MixupAndUpdateBit0(const int probability0, const int probability1, const int probability2,
const int learningRate0, const int learningRate1, const int learningRate2,
const int threshold, const int adaptationRate
)
{
const short stretchedProbability0 = bsc_stretch(probability0);
const short stretchedProbability1 = bsc_stretch(probability1);
const short stretchedProbability2 = bsc_stretch(probability2);
short stretchedProbability = (stretchedProbability0 * weight0 + stretchedProbability1 * weight1 + stretchedProbability2 * weight2) >> 17;
if (stretchedProbability < -2047) stretchedProbability = -2047;
if (stretchedProbability > 2047) stretchedProbability = 2047;
const int weight = stretchedProbability & 255;
const int index = (stretchedProbability + 2048) >> 8;
const int probability = bsc_squash(stretchedProbability);
const int mappedProbability = probabilityMap[index] + (((probabilityMap[index + 1] - probabilityMap[index]) * weight) >> 8);
const int mixedProbability = (3 * probability + mappedProbability) >> 2;
ProbabilityCounter::UpdateBit0(probabilityMap[index], threshold, adaptationRate);
ProbabilityCounter::UpdateBit0(probabilityMap[index + 1], threshold, adaptationRate);
const int eps = mixedProbability - 4095;
weight0 -= (learningRate0 * eps * stretchedProbability0) >> 16;
weight1 -= (learningRate1 * eps * stretchedProbability1) >> 16;
weight2 -= (learningRate2 * eps * stretchedProbability2) >> 16;
return mixedProbability;
};
INLINE int MixupAndUpdateBit1(const int probability0, const int probability1, const int probability2,
const int learningRate0, const int learningRate1, const int learningRate2,
const int threshold, const int adaptationRate
)
{
const short stretchedProbability0 = bsc_stretch(probability0);
const short stretchedProbability1 = bsc_stretch(probability1);
const short stretchedProbability2 = bsc_stretch(probability2);
short stretchedProbability = (stretchedProbability0 * weight0 + stretchedProbability1 * weight1 + stretchedProbability2 * weight2) >> 17;
if (stretchedProbability < -2047) stretchedProbability = -2047;
if (stretchedProbability > 2047) stretchedProbability = 2047;
const int weight = stretchedProbability & 255;
const int index = (stretchedProbability + 2048) >> 8;
const int probability = bsc_squash(stretchedProbability);
const int mappedProbability = probabilityMap[index] + (((probabilityMap[index + 1] - probabilityMap[index]) * weight) >> 8);
const int mixedProbability = (3 * probability + mappedProbability) >> 2;
ProbabilityCounter::UpdateBit1(probabilityMap[index], threshold, adaptationRate);
ProbabilityCounter::UpdateBit1(probabilityMap[index + 1], threshold, adaptationRate);
const int eps = mixedProbability - 1;
weight0 -= (learningRate0 * eps * stretchedProbability0) >> 16;
weight1 -= (learningRate1 * eps * stretchedProbability1) >> 16;
weight2 -= (learningRate2 * eps * stretchedProbability2) >> 16;
return mixedProbability;
};
INLINE void UpdateBit0(const int learningRate0, const int learningRate1, const int learningRate2,
const int threshold, const int adaptationRate
)
{
ProbabilityCounter::UpdateBit0(probabilityMap[index], threshold, adaptationRate);
ProbabilityCounter::UpdateBit0(probabilityMap[index + 1], threshold, adaptationRate);
const int eps = mixedProbability - 4095;
weight0 -= (learningRate0 * eps * stretchedProbability0) >> 16;
weight1 -= (learningRate1 * eps * stretchedProbability1) >> 16;
weight2 -= (learningRate2 * eps * stretchedProbability2) >> 16;
};
INLINE void UpdateBit1(const int learningRate0, const int learningRate1, const int learningRate2,
const int threshold, const int adaptationRate
)
{
ProbabilityCounter::UpdateBit1(probabilityMap[index], threshold, adaptationRate);
ProbabilityCounter::UpdateBit1(probabilityMap[index + 1], threshold, adaptationRate);
const int eps = mixedProbability - 1;
weight0 -= (learningRate0 * eps * stretchedProbability0) >> 16;
weight1 -= (learningRate1 * eps * stretchedProbability1) >> 16;
weight2 -= (learningRate2 * eps * stretchedProbability2) >> 16;
};
};
#endif
/*-----------------------------------------------------------*/
/* End predictor.h */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Range coder */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_CODER_RANGECODER_H
#define _LIBBSC_CODER_RANGECODER_H
#include "../../platform/platform.h"
class RangeCoder
{
private:
union ari
{
struct u
{
unsigned int low32;
unsigned int carry;
} u;
unsigned long long low;
} ari;
unsigned int ari_code;
unsigned int ari_ffnum;
unsigned int ari_cache;
unsigned int ari_range;
const unsigned short * RESTRICT ari_input;
unsigned short * RESTRICT ari_output;
unsigned short * RESTRICT ari_outputEOB;
unsigned short * RESTRICT ari_outputStart;
INLINE void OutputShort(unsigned short s)
{
*ari_output++ = s;
};
INLINE unsigned short InputShort()
{
return *ari_input++;
};
INLINE void ShiftLow()
{
if (ari.u.low32 < 0xffff0000U || ari.u.carry)
{
OutputShort(ari_cache + ari.u.carry);
if (ari_ffnum)
{
unsigned short s = ari.u.carry - 1;
do { OutputShort(s); } while (--ari_ffnum);
}
ari_cache = ari.u.low32 >> 16; ari.u.carry = 0;
} else ari_ffnum++;
ari.u.low32 <<= 16;
}
public:
INLINE bool CheckEOB()
{
return ari_output >= ari_outputEOB;
}
INLINE void InitEncoder(unsigned char * output, int outputSize)
{
ari_outputStart = (unsigned short *)output;
ari_output = (unsigned short *)output;
ari_outputEOB = (unsigned short *)(output + outputSize - 16);
ari.low = 0;
ari_ffnum = 0;
ari_cache = 0;
ari_range = 0xffffffff;
};
INLINE int FinishEncoder()
{
ShiftLow(); ShiftLow(); ShiftLow();
return (int)(ari_output - ari_outputStart) * sizeof(ari_output[0]);
}
INLINE void EncodeBit0(int probability)
{
ari_range = (ari_range >> 12) * probability;
if (ari_range < 0x10000)
{
ari_range <<= 16; ShiftLow();
}
}
INLINE void EncodeBit1(int probability)
{
unsigned int range = (ari_range >> 12) * probability;
ari.low += range; ari_range -= range;
if (ari_range < 0x10000)
{
ari_range <<= 16; ShiftLow();
}
}
INLINE void EncodeBit(unsigned int bit)
{
if (bit) EncodeBit1(2048); else EncodeBit0(2048);
};
INLINE void EncodeByte(unsigned int byte)
{
for (int bit = 7; bit >= 0; --bit)
{
EncodeBit(byte & (1 << bit));
}
};
INLINE void EncodeWord(unsigned int word)
{
for (int bit = 31; bit >= 0; --bit)
{
EncodeBit(word & (1 << bit));
}
};
INLINE void InitDecoder(const unsigned char * input)
{
ari_input = (unsigned short *)input;
ari_code = 0;
ari_range = 0xffffffff;
ari_code = (ari_code << 16) | InputShort();
ari_code = (ari_code << 16) | InputShort();
ari_code = (ari_code << 16) | InputShort();
};
INLINE int DecodeBit(int probability)
{
unsigned int range = (ari_range >> 12) * probability;
if (ari_code >= range)
{
ari_code -= range; ari_range -= range;
if (ari_range < 0x10000)
{
ari_range <<= 16; ari_code = (ari_code << 16) | InputShort();
}
return 1;
}
ari_range = range;
if (ari_range < 0x10000)
{
ari_range <<= 16; ari_code = (ari_code << 16) | InputShort();
}
return 0;
}
INLINE unsigned int DecodeBit()
{
return DecodeBit(2048);
}
INLINE unsigned int DecodeByte()
{
unsigned int byte = 0;
for (int bit = 7; bit >= 0; --bit)
{
byte += byte + DecodeBit();
}
return byte;
}
INLINE unsigned int DecodeWord()
{
unsigned int word = 0;
for (int bit = 31; bit >= 0; --bit)
{
word += word + DecodeBit();
}
return word;
}
};
#endif
/*-----------------------------------------------------------*/
/* End rangecoder.h */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to Quantized Local Frequency Coding functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_QLFC_H
#define _LIBBSC_QLFC_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* You should call this function before you call any of the other functions in qlfc.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_qlfc_init(int features);
/**
* Compress a memory block using Quantized Local Frequency Coding algorithm.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n bytes.
* @param inputSize - the length of the input memory block.
* @param outputSize - the length of the output memory block.
* @return the length of compressed memory block if no error occurred, error code otherwise.
*/
int bsc_qlfc_static_encode_block(const unsigned char * input, unsigned char * output, int inputSize, int outputSize);
/**
* Decompress a memory block using Quantized Local Frequency Coding algorithm.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n bytes.
* @param inputSize - the length of the input memory block.
* @param outputSize - the length of the output memory block.
* @return the length of decompressed memory block if no error occurred, error code otherwise.
*/
int bsc_qlfc_adaptive_encode_block(const unsigned char * input, unsigned char * output, int inputSize, int outputSize);
/**
* Compress a memory block using Quantized Local Frequency Coding algorithm.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n bytes.
* @return the length of compressed memory block if no error occurred, error code otherwise.
*/
int bsc_qlfc_static_decode_block(const unsigned char * input, unsigned char * output);
/**
* Decompress a memory block using Quantized Local Frequency Coding algorithm.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n bytes.
* @return the length of decompressed memory block if no error occurred, error code otherwise.
*/
int bsc_qlfc_adaptive_decode_block(const unsigned char * input, unsigned char * output);
#ifdef __cplusplus
}
#endif
#endif
/*-----------------------------------------------------------*/
/* End qlfc.h */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Statistical data compression model for QLFC */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <memory.h>
#include "qlfc_model.h"
#include "../../libbsc.h"
#include "../../platform/platform.h"
QlfcStatisticalModel g_QlfcStatisticalModel;
void bsc_qlfc_memset_2048(void * dst, int size)
{
for (int i = 0; i < size / 2; ++i) ((short *)dst)[i] = 2048;
}
int bsc_qlfc_init_static_model()
{
for (int mixer = 0; mixer < ALPHABET_SIZE; ++mixer)
{
g_QlfcStatisticalModel.mixerOfRank[mixer].Init();
g_QlfcStatisticalModel.mixerOfRankEscape[mixer].Init();
g_QlfcStatisticalModel.mixerOfRun[mixer].Init();
}
for (int bit = 0; bit < 8; ++bit)
{
g_QlfcStatisticalModel.mixerOfRankMantissa[bit].Init();
for (int context = 0; context < 8; ++context)
g_QlfcStatisticalModel.mixerOfRankExponent[context][bit].Init();
}
for (int bit = 0; bit < 32; ++bit)
{
g_QlfcStatisticalModel.mixerOfRunMantissa[bit].Init();
for (int context = 0; context < 32; ++context)
g_QlfcStatisticalModel.mixerOfRunExponent[context][bit].Init();
}
bsc_qlfc_memset_2048(&g_QlfcStatisticalModel.Rank, sizeof(g_QlfcStatisticalModel.Rank));
bsc_qlfc_memset_2048(&g_QlfcStatisticalModel.Run, sizeof(g_QlfcStatisticalModel.Run));
return LIBBSC_NO_ERROR;
}
void bsc_qlfc_init_model(QlfcStatisticalModel * model)
{
memcpy(model, &g_QlfcStatisticalModel, sizeof(QlfcStatisticalModel));
}
/*-----------------------------------------------------------*/
/* End qlfc_model.cpp */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Statistical data compression model for QLFC */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_QLFC_MODEL_H
#define _LIBBSC_QLFC_MODEL_H
#include "../common/predictor.h"
const int M_RANK_TS_TH0 = 1; const int M_RANK_TS_AR0 = 57;
const int M_RANK_TS_TH1 = -111; const int M_RANK_TS_AR1 = 31;
const int M_RANK_TC_TH0 = 291; const int M_RANK_TC_AR0 = 250;
const int M_RANK_TC_TH1 = 154; const int M_RANK_TC_AR1 = 528;
const int M_RANK_TP_TH0 = 375; const int M_RANK_TP_AR0 = 163;
const int M_RANK_TP_TH1 = 313; const int M_RANK_TP_AR1 = 639;
const int M_RANK_TM_TH0 = -41; const int M_RANK_TM_AR0 = 96;
const int M_RANK_TM_TH1 = 53; const int M_RANK_TM_AR1 = 49;
const int M_RANK_TM_LR0 = 20; const int M_RANK_TM_LR1 = 47;
const int M_RANK_TM_LR2 = 27;
const int M_RANK_ES_TH0 = -137; const int M_RANK_ES_AR0 = 17;
const int M_RANK_ES_TH1 = 482; const int M_RANK_ES_AR1 = 40;
const int M_RANK_EC_TH0 = 61; const int M_RANK_EC_AR0 = 192;
const int M_RANK_EC_TH1 = 200; const int M_RANK_EC_AR1 = 133;
const int M_RANK_EP_TH0 = 54; const int M_RANK_EP_AR0 = 1342;
const int M_RANK_EP_TH1 = 578; const int M_RANK_EP_AR1 = 1067;
const int M_RANK_EM_TH0 = -11; const int M_RANK_EM_AR0 = 318;
const int M_RANK_EM_TH1 = 144; const int M_RANK_EM_AR1 = 848;
const int M_RANK_EM_LR0 = 49; const int M_RANK_EM_LR1 = 41;
const int M_RANK_EM_LR2 = 40;
const int M_RANK_MS_TH0 = -145; const int M_RANK_MS_AR0 = 18;
const int M_RANK_MS_TH1 = 114; const int M_RANK_MS_AR1 = 24;
const int M_RANK_MC_TH0 = -43; const int M_RANK_MC_AR0 = 69;
const int M_RANK_MC_TH1 = -36; const int M_RANK_MC_AR1 = 78;
const int M_RANK_MP_TH0 = -2; const int M_RANK_MP_AR0 = 1119;
const int M_RANK_MP_TH1 = 11; const int M_RANK_MP_AR1 = 1181;
const int M_RANK_MM_TH0 = -203; const int M_RANK_MM_AR0 = 20;
const int M_RANK_MM_TH1 = -271; const int M_RANK_MM_AR1 = 15;
const int M_RANK_MM_LR0 = 263; const int M_RANK_MM_LR1 = 175;
const int M_RANK_MM_LR2 = 17;
const int M_RANK_PS_TH0 = -99; const int M_RANK_PS_AR0 = 32;
const int M_RANK_PS_TH1 = 318; const int M_RANK_PS_AR1 = 42;
const int M_RANK_PC_TH0 = 17; const int M_RANK_PC_AR0 = 101;
const int M_RANK_PC_TH1 = 1116; const int M_RANK_PC_AR1 = 246;
const int M_RANK_PP_TH0 = 22; const int M_RANK_PP_AR0 = 964;
const int M_RANK_PP_TH1 = -2; const int M_RANK_PP_AR1 = 1110;
const int M_RANK_PM_TH0 = -194; const int M_RANK_PM_AR0 = 21;
const int M_RANK_PM_TH1 = -129; const int M_RANK_PM_AR1 = 20;
const int M_RANK_PM_LR0 = 480; const int M_RANK_PM_LR1 = 202;
const int M_RANK_PM_LR2 = 17;
const int M_RUN_TS_TH0 = -93; const int M_RUN_TS_AR0 = 34;
const int M_RUN_TS_TH1 = -4; const int M_RUN_TS_AR1 = 51;
const int M_RUN_TC_TH0 = 139; const int M_RUN_TC_AR0 = 423;
const int M_RUN_TC_TH1 = 244; const int M_RUN_TC_AR1 = 162;
const int M_RUN_TP_TH0 = 275; const int M_RUN_TP_AR0 = 450;
const int M_RUN_TP_TH1 = -6; const int M_RUN_TP_AR1 = 579;
const int M_RUN_TM_TH0 = -68; const int M_RUN_TM_AR0 = 25;
const int M_RUN_TM_TH1 = 1; const int M_RUN_TM_AR1 = 64;
const int M_RUN_TM_LR0 = 15; const int M_RUN_TM_LR1 = 50;
const int M_RUN_TM_LR2 = 78;
const int M_RUN_ES_TH0 = -116; const int M_RUN_ES_AR0 = 31;
const int M_RUN_ES_TH1 = 43; const int M_RUN_ES_AR1 = 45;
const int M_RUN_EC_TH0 = 165; const int M_RUN_EC_AR0 = 222;
const int M_RUN_EC_TH1 = 30; const int M_RUN_EC_AR1 = 324;
const int M_RUN_EP_TH0 = 315; const int M_RUN_EP_AR0 = 857;
const int M_RUN_EP_TH1 = 109; const int M_RUN_EP_AR1 = 867;
const int M_RUN_EM_TH0 = -14; const int M_RUN_EM_AR0 = 215;
const int M_RUN_EM_TH1 = 61; const int M_RUN_EM_AR1 = 73;
const int M_RUN_EM_LR0 = 35; const int M_RUN_EM_LR1 = 37;
const int M_RUN_EM_LR2 = 42;
const int M_RUN_MS_TH0 = -176; const int M_RUN_MS_AR0 = 14;
const int M_RUN_MS_TH1 = -141; const int M_RUN_MS_AR1 = 21;
const int M_RUN_MC_TH0 = 84; const int M_RUN_MC_AR0 = 172;
const int M_RUN_MC_TH1 = 37; const int M_RUN_MC_AR1 = 263;
const int M_RUN_MP_TH0 = 2; const int M_RUN_MP_AR0 = 15;
const int M_RUN_MP_TH1 = -197; const int M_RUN_MP_AR1 = 20;
const int M_RUN_MM_TH0 = -27; const int M_RUN_MM_AR0 = 142;
const int M_RUN_MM_TH1 = -146; const int M_RUN_MM_AR1 = 27;
const int M_RUN_MM_LR0 = 51; const int M_RUN_MM_LR1 = 44;
const int M_RUN_MM_LR2 = 80;
const int F_RANK_TS_TH0 = -116; const int F_RANK_TS_AR0 = 33;
const int F_RANK_TS_TH1 = -78; const int F_RANK_TS_AR1 = 34;
const int F_RANK_TC_TH0 = -2; const int F_RANK_TC_AR0 = 282;
const int F_RANK_TC_TH1 = 12; const int F_RANK_TC_AR1 = 274;
const int F_RANK_TP_TH0 = 4; const int F_RANK_TP_AR0 = 697;
const int F_RANK_TP_TH1 = 55; const int F_RANK_TP_AR1 = 1185;
const int F_RANK_TM_LR0 = 17; const int F_RANK_TM_LR1 = 14;
const int F_RANK_TM_LR2 = 1;
const int F_RANK_ES_TH0 = -177; const int F_RANK_ES_AR0 = 23;
const int F_RANK_ES_TH1 = -370; const int F_RANK_ES_AR1 = 11;
const int F_RANK_EC_TH0 = -14; const int F_RANK_EC_AR0 = 271;
const int F_RANK_EC_TH1 = 3; const int F_RANK_EC_AR1 = 308;
const int F_RANK_EP_TH0 = -3; const int F_RANK_EP_AR0 = 788;
const int F_RANK_EP_TH1 = 135; const int F_RANK_EP_AR1 = 1364;
const int F_RANK_EM_LR0 = 22; const int F_RANK_EM_LR1 = 6;
const int F_RANK_EM_LR2 = 4;
const int F_RANK_MS_TH0 = -254; const int F_RANK_MS_AR0 = 16;
const int F_RANK_MS_TH1 = -177; const int F_RANK_MS_AR1 = 20;
const int F_RANK_MC_TH0 = -55; const int F_RANK_MC_AR0 = 73;
const int F_RANK_MC_TH1 = -54; const int F_RANK_MC_AR1 = 74;
const int F_RANK_MP_TH0 = -6; const int F_RANK_MP_AR0 = 575;
const int F_RANK_MP_TH1 = 1670; const int F_RANK_MP_AR1 = 1173;
const int F_RANK_MM_LR0 = 15; const int F_RANK_MM_LR1 = 10;
const int F_RANK_MM_LR2 = 7;
const int F_RANK_PS_TH0 = -126; const int F_RANK_PS_AR0 = 32;
const int F_RANK_PS_TH1 = -126; const int F_RANK_PS_AR1 = 32;
const int F_RANK_PC_TH0 = -33; const int F_RANK_PC_AR0 = 120;
const int F_RANK_PC_TH1 = -25; const int F_RANK_PC_AR1 = 157;
const int F_RANK_PP_TH0 = -6; const int F_RANK_PP_AR0 = 585;
const int F_RANK_PP_TH1 = 150; const int F_RANK_PP_AR1 = 275;
const int F_RANK_PM_LR0 = 16; const int F_RANK_PM_LR1 = 11;
const int F_RANK_PM_LR2 = 5;
const int F_RUN_TS_TH0 = -68; const int F_RUN_TS_AR0 = 38;
const int F_RUN_TS_TH1 = -112; const int F_RUN_TS_AR1 = 36;
const int F_RUN_TC_TH0 = -4; const int F_RUN_TC_AR0 = 221;
const int F_RUN_TC_TH1 = -13; const int F_RUN_TC_AR1 = 231;
const int F_RUN_TP_TH0 = 0; const int F_RUN_TP_AR0 = 0;
const int F_RUN_TP_TH1 = 0; const int F_RUN_TP_AR1 = 0;
const int F_RUN_TM_LR0 = 14; const int F_RUN_TM_LR1 = 18;
const int F_RUN_TM_LR2 = 0;
const int F_RUN_ES_TH0 = -90; const int F_RUN_ES_AR0 = 45;
const int F_RUN_ES_TH1 = -92; const int F_RUN_ES_AR1 = 44;
const int F_RUN_EC_TH0 = -3; const int F_RUN_EC_AR0 = 325;
const int F_RUN_EC_TH1 = -11; const int F_RUN_EC_AR1 = 341;
const int F_RUN_EP_TH0 = 24; const int F_RUN_EP_AR0 = 887;
const int F_RUN_EP_TH1 = -4; const int F_RUN_EP_AR1 = 765;
const int F_RUN_EM_LR0 = 14; const int F_RUN_EM_LR1 = 15;
const int F_RUN_EM_LR2 = 3;
const int F_RUN_MS_TH0 = -275; const int F_RUN_MS_AR0 = 14;
const int F_RUN_MS_TH1 = -185; const int F_RUN_MS_AR1 = 22;
const int F_RUN_MC_TH0 = -18; const int F_RUN_MC_AR0 = 191;
const int F_RUN_MC_TH1 = -15; const int F_RUN_MC_AR1 = 241;
const int F_RUN_MP_TH0 = -73; const int F_RUN_MP_AR0 = 54;
const int F_RUN_MP_TH1 = -214; const int F_RUN_MP_AR1 = 19;
const int F_RUN_MM_LR0 = 7; const int F_RUN_MM_LR1 = 15;
const int F_RUN_MM_LR2 = 10;
struct QlfcStatisticalModel
{
public:
ProbabilityMixer mixerOfRank[ALPHABET_SIZE];
ProbabilityMixer mixerOfRankExponent[8][8];
ProbabilityMixer mixerOfRankMantissa[8];
ProbabilityMixer mixerOfRankEscape[ALPHABET_SIZE];
ProbabilityMixer mixerOfRun[ALPHABET_SIZE];
ProbabilityMixer mixerOfRunExponent[32][32];
ProbabilityMixer mixerOfRunMantissa[32];
struct Rank
{
short StaticModel;
short StateModel[ALPHABET_SIZE];
short CharModel[ALPHABET_SIZE];
struct Exponent
{
short StaticModel[8];
short StateModel[ALPHABET_SIZE][8];
short CharModel[ALPHABET_SIZE][8];
} Exponent;
struct Mantissa
{
short StaticModel[ALPHABET_SIZE];
short StateModel[ALPHABET_SIZE][ALPHABET_SIZE];
short CharModel[ALPHABET_SIZE][ALPHABET_SIZE];
} Mantissa[8];
struct Escape
{
short StaticModel[ALPHABET_SIZE];
short StateModel[ALPHABET_SIZE][ALPHABET_SIZE];
short CharModel[ALPHABET_SIZE][ALPHABET_SIZE];
} Escape;
} Rank;
struct Run
{
short StaticModel;
short StateModel[ALPHABET_SIZE];
short CharModel[ALPHABET_SIZE];
struct Exponent
{
short StaticModel[32];
short StateModel[ALPHABET_SIZE][32];
short CharModel[ALPHABET_SIZE][32];
} Exponent;
struct Mantissa
{
short StaticModel[32];
short StateModel[ALPHABET_SIZE][32];
short CharModel[ALPHABET_SIZE][32];
} Mantissa[32];
} Run;
};
int bsc_qlfc_init_static_model();
void bsc_qlfc_init_model(QlfcStatisticalModel * model);
#endif
/*-----------------------------------------------------------*/
/* End qlfc_model.h */
/*-----------------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to data preprocessing filters */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_FILTERS_H
#define _LIBBSC_FILTERS_H
#define LIBBSC_CONTEXTS_FOLLOWING 1
#define LIBBSC_CONTEXTS_PRECEDING 2
#ifdef __cplusplus
extern "C" {
#endif
/**
* Autodetects segments for better compression of heterogeneous files.
* @param input - the input memory block of n bytes.
* @param n - the length of the input memory block.
* @param segments - the output array of segments of k elements size.
* @param k - the size of the output segments array.
* @param features - the set of additional features.
* @return The number of segments if no error occurred, error code otherwise.
*/
int bsc_detect_segments(const unsigned char * input, int n, int * segments, int k, int features);
/**
* Autodetects order of contexts for better compression of binary files.
* @param input - the input memory block of n bytes.
* @param n - the length of the input memory block.
* @param features - the set of additional features.
* @return The detected contexts order if no error occurred, error code otherwise.
*/
int bsc_detect_contextsorder(const unsigned char * input, int n, int features);
/**
* Reverses memory block to change order of contexts.
* @param T - the input/output memory block of n bytes.
* @param n - the length of the memory block.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_reverse_block(unsigned char * T, int n, int features);
/**
* Autodetects record size for better compression of multimedia files.
* @param input - the input memory block of n bytes.
* @param n - the length of the input memory block.
* @param features - the set of additional features.
* @return The size of record if no error occurred, error code otherwise.
*/
int bsc_detect_recordsize(const unsigned char * input, int n, int features);
/**
* Reorders memory block for specific size of record (Forward transform).
* @param T - the input/output memory block of n bytes.
* @param n - the length of the memory block.
* @param recordSize - the size of record.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_reorder_forward(unsigned char * T, int n, int recordSize, int features);
/**
* Reorders memory block for specific size of record (Reverse transform).
* @param T - the input/output memory block of n bytes.
* @param n - the length of the memory block.
* @param recordSize - the size of record.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_reorder_reverse(unsigned char * T, int n, int recordSize, int features);
#ifdef __cplusplus
}
#endif
#endif
/*-------------------------------------------------*/
/* End filters.h */
/*-------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Detectors of blocksize, recordsize and contexts reorder. */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <memory.h>
#include "../filters.h"
#include "../platform/platform.h"
#include "../libbsc.h"
#include "tables.h"
#define DETECTORS_MAX_RECORD_SIZE 4
#define DETECTORS_NUM_BLOCKS 48
#define DETECTORS_BLOCK_SIZE 24576
struct BscSegmentationModel
{
struct
{
int left, right;
} contextsCount[ALPHABET_SIZE];
struct
{
struct
{
int left, right;
} Frequencies[ALPHABET_SIZE];
} contexts[ALPHABET_SIZE];
};
struct BscReorderingModel
{
struct
{
int frequencies[ALPHABET_SIZE];
} contexts[DETECTORS_MAX_RECORD_SIZE][ALPHABET_SIZE];
};
int bsc_detect_segments_serial(BscSegmentationModel * RESTRICT model, const unsigned char * RESTRICT input, int n)
{
memset(model, 0, sizeof(BscSegmentationModel));
for (int context = 0, i = 0; i < n; ++i)
{
unsigned char symbol = input[i];
model->contexts[context].Frequencies[symbol].right++;
context = (unsigned char)((context << 5) ^ symbol);
}
long long entropy = 0;
for (int context = 0; context < ALPHABET_SIZE; ++context)
{
int count = 0;
for (int symbol = 0; symbol < ALPHABET_SIZE; ++symbol)
{
int frequency = model->contexts[context].Frequencies[symbol].right;
count += frequency; entropy -= bsc_entropy(frequency);
}
model->contextsCount[context].right = count; entropy += bsc_entropy(count);
}
int blockSize = n;
long long localEntropy = entropy, bestEntropy = entropy - (entropy >> 5) - (65536LL * 12 * 1024);
for (int context = 0, i = 0; i < n; ++i)
{
if (localEntropy < bestEntropy)
{
bestEntropy = localEntropy;
blockSize = i;
}
unsigned char symbol = input[i];
localEntropy += bsc_delta(--model->contexts[context].Frequencies[symbol].right);
localEntropy -= bsc_delta(model->contexts[context].Frequencies[symbol].left++);
localEntropy -= bsc_delta(--model->contextsCount[context].right);
localEntropy += bsc_delta(model->contextsCount[context].left++);
context = (unsigned char)((context << 5) ^ symbol);
}
return blockSize;
}
#ifdef LIBBSC_OPENMP
int bsc_detect_segments_parallel(BscSegmentationModel * RESTRICT model0, BscSegmentationModel * RESTRICT model1, const unsigned char * RESTRICT input, int n)
{
int globalBlockSize = n; long long globalEntropy, globalBestEntropy;
#pragma omp parallel num_threads(2)
{
int nThreads = omp_get_num_threads();
int threadId = omp_get_thread_num();
if (nThreads == 1)
{
globalBlockSize = bsc_detect_segments_serial(model0, input, n);
}
else
{
int median = n / 2;
{
if (threadId == 0)
{
memset(model0, 0, sizeof(BscSegmentationModel));
int context = 0;
for (int i = 0; i < median; ++i)
{
unsigned char symbol = input[i];
model0->contexts[context].Frequencies[symbol].right++;
context = (unsigned char)((context << 5) ^ symbol);
}
}
else
{
memset(model1, 0, sizeof(BscSegmentationModel));
int context = (unsigned char)((input[median - 2] << 5) ^ input[median - 1]);
for (int i = median; i < n; ++i)
{
unsigned char symbol = input[i];
model1->contexts[context].Frequencies[symbol].left++;
context = (unsigned char)((context << 5) ^ symbol);
}
}
#pragma omp barrier
}
{
#pragma omp single
{
long long entropy = 0;
for (int context = 0; context < ALPHABET_SIZE; ++context)
{
int count = 0;
for (int symbol = 0; symbol < ALPHABET_SIZE; ++symbol)
{
int frequency = model0->contexts[context].Frequencies[symbol].right + model1->contexts[context].Frequencies[symbol].left;
model0->contexts[context].Frequencies[symbol].right = model1->contexts[context].Frequencies[symbol].left = frequency;
count += frequency; entropy -= bsc_entropy(frequency);
}
model0->contextsCount[context].right = model1->contextsCount[context].left = count; entropy += bsc_entropy(count);
}
globalEntropy = entropy; globalBestEntropy = entropy - (entropy >> 5) - (65536LL * 12 * 1024);
}
}
{
int localBlockSize = n; long long localBestEntropy = globalEntropy - (globalEntropy >> 5) - (65536LL * 12 * 1024);
if (threadId == 0)
{
long long localEntropy = globalEntropy;
for (int context = 0, i = 0; i < median; ++i)
{
if (localEntropy < localBestEntropy)
{
localBestEntropy = localEntropy;
localBlockSize = i;
}
unsigned char symbol = input[i];
localEntropy += bsc_delta(--model0->contexts[context].Frequencies[symbol].right);
localEntropy -= bsc_delta(model0->contexts[context].Frequencies[symbol].left++);
localEntropy -= bsc_delta(--model0->contextsCount[context].right);
localEntropy += bsc_delta(model0->contextsCount[context].left++);
context = (unsigned char)((context << 5) ^ symbol);
}
}
else
{
long long localEntropy = globalEntropy;
for (int i = n - 1; i >= median; --i)
{
unsigned char symbol = input[i];
int context = (unsigned char)((input[i - 2] << 5) ^ input[i - 1]);
localEntropy -= bsc_delta(model1->contexts[context].Frequencies[symbol].right++);
localEntropy += bsc_delta(--model1->contexts[context].Frequencies[symbol].left);
localEntropy += bsc_delta(model1->contextsCount[context].right++);
localEntropy -= bsc_delta(--model1->contextsCount[context].left);
if (localEntropy <= localBestEntropy)
{
localBestEntropy = localEntropy;
localBlockSize = i;
}
}
}
if (globalBestEntropy > localBestEntropy)
{
#pragma omp critical
{
if (globalBestEntropy > localBestEntropy)
{
globalBlockSize = localBlockSize; globalBestEntropy = localBestEntropy;
}
}
}
}
}
}
return globalBlockSize;
}
#endif
int bsc_detect_segments_recursive(BscSegmentationModel * model0, BscSegmentationModel * model1, const unsigned char * input, int n, int * segments, int k, int features)
{
if (n < DETECTORS_BLOCK_SIZE || k == 1)
{
segments[0] = n;
return 1;
}
int blockSize = n;
#ifdef LIBBSC_OPENMP
if (features & LIBBSC_FEATURE_MULTITHREADING)
{
blockSize = bsc_detect_segments_parallel(model0, model1, input, n);
}
else
#endif
{
blockSize = bsc_detect_segments_serial(model0, input, n);
}
if (blockSize == n)
{
segments[0] = n;
return 1;
}
int leftResult = bsc_detect_segments_recursive(model0, model1, input, blockSize, segments, k - 1, features);
if (leftResult < LIBBSC_NO_ERROR) return leftResult;
int rightResult = bsc_detect_segments_recursive(model0, model1, input + blockSize, n - blockSize, segments + leftResult, k - leftResult, features);
if (rightResult < LIBBSC_NO_ERROR) return rightResult;
return leftResult + rightResult;
}
int bsc_detect_segments(const unsigned char * input, int n, int * segments, int k, int features)
{
if (n < DETECTORS_BLOCK_SIZE || k == 1)
{
segments[0] = n;
return 1;
}
if (BscSegmentationModel * model0 = (BscSegmentationModel *)bsc_malloc(sizeof(BscSegmentationModel)))
{
if (BscSegmentationModel * model1 = (BscSegmentationModel *)bsc_malloc(sizeof(BscSegmentationModel)))
{
int result = bsc_detect_segments_recursive(model0, model1, input, n, segments, k, features);
bsc_free(model1); bsc_free(model0);
return result;
}
bsc_free(model0);
};
return LIBBSC_NOT_ENOUGH_MEMORY;
}
static long long bsc_estimate_contextsorder(const unsigned char * input, int n)
{
int frequencies[ALPHABET_SIZE][3];
memset(frequencies, 0, sizeof(frequencies));
unsigned char MTF0 = 0;
unsigned char MTF1 = 1;
unsigned char MTFC = 0;
for (int i = 0; i < n; ++i)
{
unsigned char C = input[i];
if (C == MTF0)
{
frequencies[MTFC][0]++; MTFC = MTFC << 2;
}
else
{
if (C == MTF1)
{
frequencies[MTFC][1]++; MTFC = (MTFC << 2) | 1;
}
else
{
frequencies[MTFC][2]++; MTFC = (MTFC << 2) | 2;
}
MTF1 = MTF0; MTF0 = C;
}
}
long long entropy = 0;
for (int context = 0; context < ALPHABET_SIZE; ++context)
{
int count = 0;
for (int rank = 0; rank < 3; ++rank)
{
count += frequencies[context][rank];
entropy -= bsc_entropy(frequencies[context][rank]);
}
entropy += bsc_entropy(count);
}
return entropy;
}
int bsc_detect_contextsorder(const unsigned char * RESTRICT input, int n, int features)
{
int sortingContexts = LIBBSC_NOT_ENOUGH_MEMORY;
if ((n > DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE) && (features & LIBBSC_FEATURE_FASTMODE))
{
if (unsigned char * buffer = (unsigned char *)bsc_malloc(DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE * sizeof(unsigned char)))
{
int blockStride = (((n - DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE) / DETECTORS_NUM_BLOCKS) / 48) * 48;
for (int block = 0; block < DETECTORS_NUM_BLOCKS; ++block)
{
memcpy(buffer + block * DETECTORS_BLOCK_SIZE, input + block * (DETECTORS_BLOCK_SIZE + blockStride), DETECTORS_BLOCK_SIZE);
}
sortingContexts = bsc_detect_contextsorder(buffer, DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE, features);
bsc_free(buffer);
}
return sortingContexts;
}
if (unsigned char * RESTRICT buffer = (unsigned char *)bsc_malloc(n * sizeof(unsigned char)))
{
if (int * RESTRICT bucket0 = (int *)bsc_zero_malloc(ALPHABET_SIZE * ALPHABET_SIZE * sizeof(int)))
{
if (int * RESTRICT bucket1 = (int *)bsc_zero_malloc(ALPHABET_SIZE * ALPHABET_SIZE * sizeof(int)))
{
unsigned char C0 = input[n - 1];
for (int i = 0; i < n; ++i)
{
unsigned char C1 = input[i];
bucket0[(C0 << 8) | C1]++;
bucket1[(C1 << 8) | C0]++;
C0 = C1;
}
for (int sum = 0, i = 0; i < ALPHABET_SIZE * ALPHABET_SIZE; ++i)
{
int tmp = sum; sum += bucket0[i]; bucket0[i] = tmp;
}
unsigned char F0 = input[n - 2];
unsigned char F1 = input[n - 1];
for (int i = 0; i < n; ++i)
{
unsigned char F2 = input[i];
buffer[bucket0[(F1 << 8) | F2]++] = F0;
F0 = F1; F1 = F2;
}
long long following = bsc_estimate_contextsorder(buffer, n);
for (int sum = 0, i = 0; i < ALPHABET_SIZE * ALPHABET_SIZE; ++i)
{
int tmp = sum; sum += bucket1[i]; bucket1[i] = tmp;
}
unsigned char P0 = input[1];
unsigned char P1 = input[0];
for (int i = n - 1; i >= 0; --i)
{
unsigned char P2 = input[i];
buffer[bucket1[(P1 << 8) | P2]++] = P0;
P0 = P1; P1 = P2;
}
long long preceding = bsc_estimate_contextsorder(buffer, n);
sortingContexts = (preceding < following) ? LIBBSC_CONTEXTS_PRECEDING : LIBBSC_CONTEXTS_FOLLOWING;
bsc_free(bucket1);
}
bsc_free(bucket0);
};
bsc_free(buffer);
}
return sortingContexts;
}
long long bsc_estimate_reordering(BscReorderingModel * model, int recordSize)
{
long long entropy = 0;
for (int record = 0; record < recordSize; ++record)
{
for (int context = 0; context < ALPHABET_SIZE; ++context)
{
int count = 0;
for (int symbol = 0; symbol < ALPHABET_SIZE; ++symbol)
{
int frequency = model->contexts[record][context].frequencies[symbol];
count += frequency; entropy -= bsc_entropy(frequency);
}
entropy += (65536LL * 8 * (count < 256 ? count : 256)) + bsc_entropy(count);
}
}
return entropy;
}
int bsc_detect_recordsize(const unsigned char * RESTRICT input, int n, int features)
{
int result = LIBBSC_NOT_ENOUGH_MEMORY;
if ((n > DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE) && (features & LIBBSC_FEATURE_FASTMODE))
{
if (unsigned char * buffer = (unsigned char *)bsc_malloc(DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE * sizeof(unsigned char)))
{
int blockStride = (((n - DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE) / DETECTORS_NUM_BLOCKS) / 48) * 48;
for (int block = 0; block < DETECTORS_NUM_BLOCKS; ++block)
{
memcpy(buffer + block * DETECTORS_BLOCK_SIZE, input + block * (DETECTORS_BLOCK_SIZE + blockStride), DETECTORS_BLOCK_SIZE);
}
result = bsc_detect_recordsize(buffer, DETECTORS_NUM_BLOCKS * DETECTORS_BLOCK_SIZE, features);
bsc_free(buffer);
}
return result;
}
if (BscReorderingModel * RESTRICT model = (BscReorderingModel *)bsc_malloc(sizeof(BscReorderingModel)))
{
long long Entropy[DETECTORS_MAX_RECORD_SIZE];
if ((n % 48) != 0) n = n - (n % 48);
for (int recordSize = 1; recordSize <= DETECTORS_MAX_RECORD_SIZE; ++recordSize)
{
memset(model, 0, sizeof(BscReorderingModel));
if (recordSize == 1)
{
int ctx0 = 0;
for (int i = 0; i < n; i += 8)
{
unsigned char c0 = input[i + 0]; model->contexts[0][ctx0].frequencies[c0]++; ctx0 = c0;
unsigned char c1 = input[i + 1]; model->contexts[0][ctx0].frequencies[c1]++; ctx0 = c1;
unsigned char c2 = input[i + 2]; model->contexts[0][ctx0].frequencies[c2]++; ctx0 = c2;
unsigned char c3 = input[i + 3]; model->contexts[0][ctx0].frequencies[c3]++; ctx0 = c3;
unsigned char c4 = input[i + 4]; model->contexts[0][ctx0].frequencies[c4]++; ctx0 = c4;
unsigned char c5 = input[i + 5]; model->contexts[0][ctx0].frequencies[c5]++; ctx0 = c5;
unsigned char c6 = input[i + 6]; model->contexts[0][ctx0].frequencies[c6]++; ctx0 = c6;
unsigned char c7 = input[i + 7]; model->contexts[0][ctx0].frequencies[c7]++; ctx0 = c7;
}
}
if (recordSize == 2)
{
int ctx0 = 0, ctx1 = 0;
for (int i = 0; i < n; i += 8)
{
unsigned char c0 = input[i + 0]; model->contexts[0][ctx0].frequencies[c0]++; ctx0 = c0;
unsigned char c1 = input[i + 1]; model->contexts[1][ctx1].frequencies[c1]++; ctx1 = c1;
unsigned char c2 = input[i + 2]; model->contexts[0][ctx0].frequencies[c2]++; ctx0 = c2;
unsigned char c3 = input[i + 3]; model->contexts[1][ctx1].frequencies[c3]++; ctx1 = c3;
unsigned char c4 = input[i + 4]; model->contexts[0][ctx0].frequencies[c4]++; ctx0 = c4;
unsigned char c5 = input[i + 5]; model->contexts[1][ctx1].frequencies[c5]++; ctx1 = c5;
unsigned char c6 = input[i + 6]; model->contexts[0][ctx0].frequencies[c6]++; ctx0 = c6;
unsigned char c7 = input[i + 7]; model->contexts[1][ctx1].frequencies[c7]++; ctx1 = c7;
}
}
if (recordSize == 3)
{
int ctx0 = 0, ctx1 = 0, ctx2 = 0;
for (int i = 0; i < n; i += 6)
{
unsigned char c0 = input[i + 0]; model->contexts[0][ctx0].frequencies[c0]++; ctx0 = c0;
unsigned char c1 = input[i + 1]; model->contexts[1][ctx1].frequencies[c1]++; ctx1 = c1;
unsigned char c2 = input[i + 2]; model->contexts[2][ctx2].frequencies[c2]++; ctx2 = c2;
unsigned char c3 = input[i + 3]; model->contexts[0][ctx0].frequencies[c3]++; ctx0 = c3;
unsigned char c4 = input[i + 4]; model->contexts[1][ctx1].frequencies[c4]++; ctx1 = c4;
unsigned char c5 = input[i + 5]; model->contexts[2][ctx2].frequencies[c5]++; ctx2 = c5;
}
}
if (recordSize == 4)
{
int ctx0 = 0, ctx1 = 0, ctx2 = 0, ctx3 = 0;
for (int i = 0; i < n; i += 8)
{
unsigned char c0 = input[i + 0]; model->contexts[0][ctx0].frequencies[c0]++; ctx0 = c0;
unsigned char c1 = input[i + 1]; model->contexts[1][ctx1].frequencies[c1]++; ctx1 = c1;
unsigned char c2 = input[i + 2]; model->contexts[2][ctx2].frequencies[c2]++; ctx2 = c2;
unsigned char c3 = input[i + 3]; model->contexts[3][ctx3].frequencies[c3]++; ctx3 = c3;
unsigned char c4 = input[i + 4]; model->contexts[0][ctx0].frequencies[c4]++; ctx0 = c4;
unsigned char c5 = input[i + 5]; model->contexts[1][ctx1].frequencies[c5]++; ctx1 = c5;
unsigned char c6 = input[i + 6]; model->contexts[2][ctx2].frequencies[c6]++; ctx2 = c6;
unsigned char c7 = input[i + 7]; model->contexts[3][ctx3].frequencies[c7]++; ctx3 = c7;
}
}
if (recordSize > 4)
{
int Context[DETECTORS_MAX_RECORD_SIZE] = { 0 };
for (int record = 0, i = 0; i < n; ++i)
{
model->contexts[record][Context[record]].frequencies[input[i]]++;
Context[record] = input[i]; record++; if (record == recordSize) record = 0;
}
}
Entropy[recordSize - 1] = bsc_estimate_reordering(model, recordSize);
}
long long bestSize = Entropy[0] - (Entropy[0] >> 4) - (65536LL * 8 * 1024);
result = 1;
for (int recordSize = 1; recordSize <= DETECTORS_MAX_RECORD_SIZE; ++recordSize)
{
if (bestSize > Entropy[recordSize - 1]) { bestSize = Entropy[recordSize - 1]; result = recordSize; }
}
bsc_free(model);
};
return result;
}
/*-------------------------------------------------*/
/* End detectors.cpp */
/*-------------------------------------------------*/

182
bsc/libbsc/filters/preprocessing.cpp Normal file
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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Data preprocessing functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <memory.h>
#include "../filters.h"
#include "../platform/platform.h"
#include "../libbsc.h"
int bsc_reverse_block(unsigned char * T, int n, int features)
{
#ifdef LIBBSC_OPENMP
if (features & LIBBSC_FEATURE_MULTITHREADING)
{
#pragma omp parallel for
for (int i = 0; i < n / 2; ++i)
{
unsigned char tmp = T[i]; T[i] = T[n - 1 - i]; T[n - 1 - i] = tmp;
}
}
else
#endif
{
for (int i = 0, j = n - 1; i < j; ++i, --j)
{
unsigned char tmp = T[i]; T[i] = T[j]; T[j] = tmp;
}
}
return LIBBSC_NO_ERROR;
}
int bsc_reorder_forward(unsigned char * T, int n, int recordSize, int features)
{
if (recordSize <= 0) return LIBBSC_BAD_PARAMETER;
if (recordSize == 1) return LIBBSC_NO_ERROR;
if (unsigned char * buffer = (unsigned char *)bsc_malloc(n))
{
memcpy(buffer, T, n);
unsigned char * RESTRICT S = buffer;
unsigned char * RESTRICT D = T;
int chunk = (n / recordSize);
#ifdef LIBBSC_OPENMP
if (features & LIBBSC_FEATURE_MULTITHREADING)
{
switch (recordSize)
{
case 2:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { D[i] = S[2 * i]; D[chunk + i] = S[2 * i + 1]; } break;
case 3:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { D[i] = S[3 * i]; D[chunk + i] = S[3 * i + 1]; D[chunk * 2 + i] = S[3 * i + 2]; } break;
case 4:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { D[i] = S[4 * i]; D[chunk + i] = S[4 * i + 1]; D[chunk * 2 + i] = S[4 * i + 2]; D[chunk * 3 + i] = S[4 * i + 3]; } break;
default:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { for (int j = 0; j < recordSize; ++j) D[j * chunk + i] = S[recordSize * i + j]; }
}
}
else
#endif
{
switch (recordSize)
{
case 2: for (int i = 0; i < chunk; ++i) { D[0] = S[0]; D[chunk] = S[1]; D++; S += 2; } break;
case 3: for (int i = 0; i < chunk; ++i) { D[0] = S[0]; D[chunk] = S[1]; D[chunk * 2] = S[2]; D++; S += 3; } break;
case 4: for (int i = 0; i < chunk; ++i) { D[0] = S[0]; D[chunk] = S[1]; D[chunk * 2] = S[2]; D[chunk * 3] = S[3]; D++; S += 4; } break;
default:
for (int i = 0; i < chunk; ++i) { for (int j = 0; j < recordSize; ++j) D[j * chunk] = S[j]; D++; S += recordSize; }
}
}
bsc_free(buffer); return LIBBSC_NO_ERROR;
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
int bsc_reorder_reverse(unsigned char * T, int n, int recordSize, int features)
{
if (recordSize <= 0) return LIBBSC_BAD_PARAMETER;
if (recordSize == 1) return LIBBSC_NO_ERROR;
if (unsigned char * buffer = (unsigned char *)bsc_malloc(n))
{
memcpy(buffer, T, n);
unsigned char * RESTRICT S = buffer;
unsigned char * RESTRICT D = T;
int chunk = (n / recordSize);
#ifdef LIBBSC_OPENMP
if (features & LIBBSC_FEATURE_MULTITHREADING)
{
switch (recordSize)
{
case 2:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { D[2 * i] = S[i]; D[2 * i + 1] = S[chunk + i]; } break;
case 3:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { D[3 * i] = S[i]; D[3 * i + 1] = S[chunk + i]; D[3 * i + 2] = S[chunk * 2 + i]; } break;
case 4:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { D[4 * i] = S[i]; D[4 * i + 1] = S[chunk + i]; D[4 * i + 2] = S[chunk * 2 + i]; D[4 * i + 3] = S[chunk * 3 + i]; } break;
default:
#pragma omp parallel for
for (int i = 0; i < chunk; ++i) { for (int j = 0; j < recordSize; ++j) D[recordSize * i + j] = S[j * chunk + i]; }
}
}
else
#endif
{
switch (recordSize)
{
case 2: for (int i = 0; i < chunk; ++i) { D[0] = S[0]; D[1] = S[chunk]; D += 2; S++; } break;
case 3: for (int i = 0; i < chunk; ++i) { D[0] = S[0]; D[1] = S[chunk]; D[2] = S[chunk * 2]; D += 3; S++; } break;
case 4: for (int i = 0; i < chunk; ++i) { D[0] = S[0]; D[1] = S[chunk]; D[2] = S[chunk * 2]; D[3] = S[chunk * 3]; D += 4; S++; } break;
default:
for (int i = 0; i < chunk; ++i) { for (int j = 0; j < recordSize; ++j) D[j] = S[j * chunk]; D += recordSize; S++; }
}
}
bsc_free(buffer); return LIBBSC_NO_ERROR;
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
/*-------------------------------------------------*/
/* End preprocessing.cpp */
/*-------------------------------------------------*/

756
bsc/libbsc/filters/tables.h Normal file
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@ -0,0 +1,756 @@
/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Static tables of constant values */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_FILTERS_TABLES_H
#define _LIBBSC_FILTERS_TABLES_H
#include "../platform/platform.h"
static const unsigned int bsc_code_table[4096] =
{
0, 0, 65536, 103872, 131072, 152169, 169408, 183982, 196608, 207744, 217705, 226717,
234944, 242512, 249518, 256041, 262144, 267875, 273280, 278392, 283241, 287854, 292253, 296456,
300480, 304339, 308048, 311616, 315054, 318372, 321577, 324678, 327680, 330589, 333411, 336152,
338816, 341406, 343928, 346384, 348777, 351112, 353390, 355615, 357789, 359914, 361992, 364025,
366016, 367965, 369875, 371748, 373584, 375384, 377152, 378887, 380590, 382264, 383908, 385524,
387113, 388676, 390214, 391727, 393216, 394681, 396125, 397547, 398947, 400328, 401688, 403029,
404352, 405656, 406942, 408211, 409464, 410700, 411920, 413124, 414313, 415488, 416648, 417794,
418926, 420045, 421151, 422244, 423325, 424393, 425450, 426494, 427528, 428550, 429561, 430562,
431552, 432531, 433501, 434461, 435411, 436352, 437284, 438206, 439120, 440024, 440920, 441808,
442688, 443559, 444423, 445278, 446126, 446967, 447800, 448626, 449444, 450256, 451060, 451858,
452649, 453434, 454212, 454984, 455750, 456509, 457263, 458010, 458752, 459487, 460217, 460942,
461661, 462374, 463083, 463786, 464483, 465176, 465864, 466546, 467224, 467897, 468565, 469229,
469888, 470542, 471192, 471837, 472478, 473115, 473747, 474376, 475000, 475620, 476236, 476848,
477456, 478060, 478660, 479257, 479849, 480438, 481024, 481606, 482184, 482759, 483330, 483898,
484462, 485024, 485581, 486136, 486687, 487235, 487780, 488322, 488861, 489396, 489929, 490459,
490986, 491509, 492030, 492548, 493064, 493576, 494086, 494593, 495097, 495599, 496098, 496594,
497088, 497579, 498067, 498553, 499037, 499518, 499997, 500473, 500947, 501419, 501888, 502355,
502820, 503282, 503742, 504200, 504656, 505109, 505560, 506009, 506456, 506901, 507344, 507785,
508224, 508661, 509095, 509528, 509959, 510387, 510814, 511239, 511662, 512083, 512503, 512920,
513336, 513750, 514162, 514572, 514980, 515387, 515792, 516195, 516596, 516996, 517394, 517791,
518185, 518579, 518970, 519360, 519748, 520135, 520520, 520904, 521286, 521666, 522045, 522423,
522799, 523173, 523546, 523917, 524288, 524656, 525023, 525389, 525753, 526116, 526478, 526838,
527197, 527554, 527910, 528265, 528619, 528971, 529322, 529671, 530019, 530366, 530712, 531057,
531400, 531742, 532082, 532422, 532760, 533097, 533433, 533768, 534101, 534434, 534765, 535095,
535424, 535751, 536078, 536403, 536728, 537051, 537373, 537694, 538014, 538333, 538651, 538968,
539283, 539598, 539912, 540224, 540536, 540846, 541156, 541464, 541772, 542078, 542384, 542688,
542992, 543294, 543596, 543896, 544196, 544495, 544793, 545089, 545385, 545680, 545974, 546268,
546560, 546851, 547142, 547431, 547720, 548008, 548295, 548581, 548866, 549150, 549434, 549717,
549998, 550279, 550560, 550839, 551117, 551395, 551672, 551948, 552223, 552498, 552771, 553044,
553316, 553588, 553858, 554128, 554397, 554665, 554932, 555199, 555465, 555730, 555995, 556259,
556522, 556784, 557045, 557306, 557566, 557826, 558084, 558342, 558600, 558856, 559112, 559367,
559622, 559876, 560129, 560381, 560633, 560884, 561135, 561384, 561634, 561882, 562130, 562377,
562624, 562870, 563115, 563359, 563603, 563847, 564089, 564332, 564573, 564814, 565054, 565294,
565533, 565771, 566009, 566247, 566483, 566719, 566955, 567190, 567424, 567658, 567891, 568124,
568356, 568587, 568818, 569048, 569278, 569507, 569736, 569964, 570192, 570419, 570645, 570871,
571096, 571321, 571545, 571769, 571992, 572215, 572437, 572659, 572880, 573101, 573321, 573541,
573760, 573978, 574197, 574414, 574631, 574848, 575064, 575280, 575495, 575709, 575923, 576137,
576350, 576563, 576775, 576987, 577198, 577409, 577619, 577829, 578039, 578248, 578456, 578664,
578872, 579079, 579286, 579492, 579698, 579903, 580108, 580312, 580516, 580720, 580923, 581125,
581328, 581530, 581731, 581932, 582132, 582332, 582532, 582731, 582930, 583129, 583327, 583524,
583721, 583918, 584115, 584311, 584506, 584701, 584896, 585090, 585284, 585478, 585671, 585864,
586056, 586248, 586440, 586631, 586822, 587012, 587202, 587392, 587581, 587770, 587959, 588147,
588335, 588522, 588709, 588896, 589082, 589268, 589453, 589639, 589824, 590008, 590192, 590376,
590559, 590742, 590925, 591107, 591289, 591471, 591652, 591833, 592014, 592194, 592374, 592554,
592733, 592912, 593090, 593269, 593446, 593624, 593801, 593978, 594155, 594331, 594507, 594682,
594858, 595033, 595207, 595382, 595555, 595729, 595902, 596075, 596248, 596421, 596593, 596764,
596936, 597107, 597278, 597448, 597618, 597788, 597958, 598127, 598296, 598465, 598633, 598801,
598969, 599137, 599304, 599471, 599637, 599804, 599970, 600135, 600301, 600466, 600631, 600795,
600960, 601124, 601287, 601451, 601614, 601777, 601939, 602102, 602264, 602426, 602587, 602748,
602909, 603070, 603230, 603390, 603550, 603710, 603869, 604028, 604187, 604345, 604504, 604662,
604819, 604977, 605134, 605291, 605448, 605604, 605760, 605916, 606072, 606227, 606382, 606537,
606692, 606846, 607000, 607154, 607308, 607461, 607614, 607767, 607920, 608072, 608224, 608376,
608528, 608679, 608830, 608981, 609132, 609282, 609432, 609582, 609732, 609882, 610031, 610180,
610329, 610477, 610625, 610774, 610921, 611069, 611216, 611364, 611510, 611657, 611804, 611950,
612096, 612242, 612387, 612533, 612678, 612823, 612967, 613112, 613256, 613400, 613544, 613687,
613831, 613974, 614117, 614260, 614402, 614544, 614686, 614828, 614970, 615111, 615253, 615394,
615534, 615675, 615815, 615956, 616096, 616235, 616375, 616514, 616653, 616792, 616931, 617070,
617208, 617346, 617484, 617622, 617759, 617897, 618034, 618171, 618307, 618444, 618580, 618716,
618852, 618988, 619124, 619259, 619394, 619529, 619664, 619798, 619933, 620067, 620201, 620335,
620468, 620602, 620735, 620868, 621001, 621134, 621266, 621399, 621531, 621663, 621795, 621926,
622058, 622189, 622320, 622451, 622581, 622712, 622842, 622972, 623102, 623232, 623362, 623491,
623620, 623749, 623878, 624007, 624136, 624264, 624392, 624520, 624648, 624776, 624903, 625031,
625158, 625285, 625412, 625538, 625665, 625791, 625917, 626043, 626169, 626295, 626420, 626545,
626671, 626796, 626920, 627045, 627170, 627294, 627418, 627542, 627666, 627790, 627913, 628036,
628160, 628283, 628406, 628528, 628651, 628773, 628895, 629017, 629139, 629261, 629383, 629504,
629625, 629747, 629868, 629988, 630109, 630230, 630350, 630470, 630590, 630710, 630830, 630950,
631069, 631188, 631307, 631426, 631545, 631664, 631783, 631901, 632019, 632137, 632255, 632373,
632491, 632608, 632726, 632843, 632960, 633077, 633194, 633310, 633427, 633543, 633660, 633776,
633892, 634007, 634123, 634239, 634354, 634469, 634584, 634699, 634814, 634929, 635043, 635158,
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749106, 749140, 749174, 749208, 749243, 749277, 749311, 749345, 749379, 749413, 749448, 749482,
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749924, 749958, 749992, 750026, 750060, 750094, 750128, 750162, 750196, 750229, 750263, 750297,
750331, 750365, 750399, 750432, 750466, 750500, 750534, 750567, 750601, 750635, 750668, 750702,
750736, 750769, 750803, 750837, 750870, 750904, 750938, 750971, 751005, 751038, 751072, 751105,
751139, 751173, 751206, 751240, 751273, 751307, 751340, 751373, 751407, 751440, 751474, 751507,
751540, 751574, 751607, 751641, 751674, 751707, 751741, 751774, 751807, 751840, 751874, 751907,
751940, 751974, 752007, 752040, 752073, 752106, 752140, 752173, 752206, 752239, 752272, 752305,
752338, 752371, 752405, 752438, 752471, 752504, 752537, 752570, 752603, 752636, 752669, 752702,
752735, 752768, 752801, 752834, 752867, 752899, 752932, 752965, 752998, 753031, 753064, 753097,
753130, 753162, 753195, 753228, 753261, 753294, 753326, 753359, 753392, 753425, 753457, 753490,
753523, 753555, 753588, 753621, 753653, 753686, 753719, 753751, 753784, 753816, 753849, 753882,
753914, 753947, 753979, 754012, 754044, 754077, 754109, 754142, 754174, 754207, 754239, 754272,
754304, 754337, 754369, 754401, 754434, 754466, 754498, 754531, 754563, 754595, 754628, 754660,
754692, 754725, 754757, 754789, 754821, 754854, 754886, 754918, 754950, 754983, 755015, 755047,
755079, 755111, 755143, 755176, 755208, 755240, 755272, 755304, 755336, 755368, 755400, 755432,
755464, 755496, 755528, 755560, 755592, 755624, 755656, 755688, 755720, 755752, 755784, 755816,
755848, 755880, 755912, 755943, 755975, 756007, 756039, 756071, 756103, 756134, 756166, 756198,
756230, 756262, 756293, 756325, 756357, 756389, 756420, 756452, 756484, 756515, 756547, 756579,
756610, 756642, 756674, 756705, 756737, 756768, 756800, 756832, 756863, 756895, 756926, 756958,
756989, 757021, 757052, 757084, 757115, 757147, 757178, 757210, 757241, 757272, 757304, 757335,
757367, 757398, 757429, 757461, 757492, 757524, 757555, 757586, 757617, 757649, 757680, 757711,
757743, 757774, 757805, 757836, 757868, 757899, 757930, 757961, 757992, 758024, 758055, 758086,
758117, 758148, 758179, 758210, 758242, 758273, 758304, 758335, 758366, 758397, 758428, 758459,
758490, 758521, 758552, 758583, 758614, 758645, 758676, 758707, 758738, 758769, 758800, 758831,
758862, 758892, 758923, 758954, 758985, 759016, 759047, 759078, 759108, 759139, 759170, 759201,
759232, 759262, 759293, 759324, 759355, 759385, 759416, 759447, 759478, 759508, 759539, 759570,
759600, 759631, 759662, 759692, 759723, 759753, 759784, 759815, 759845, 759876, 759906, 759937,
759967, 759998, 760028, 760059, 760089, 760120, 760150, 760181, 760211, 760242, 760272, 760303,
760333, 760364, 760394, 760424, 760455, 760485, 760516, 760546, 760576, 760607, 760637, 760667,
760697, 760728, 760758, 760788, 760819, 760849, 760879, 760909, 760940, 760970, 761000, 761030,
761060, 761091, 761121, 761151, 761181, 761211, 761241, 761272, 761302, 761332, 761362, 761392,
761422, 761452, 761482, 761512, 761542, 761572, 761602, 761632, 761662, 761692, 761722, 761752,
761782, 761812, 761842, 761872, 761902, 761932, 761962, 761992, 762022, 762051, 762081, 762111,
762141, 762171, 762201, 762231, 762260, 762290, 762320, 762350, 762379, 762409, 762439, 762469,
762498, 762528, 762558, 762588, 762617, 762647, 762677, 762706, 762736, 762766, 762795, 762825,
762855, 762884, 762914, 762943, 762973, 763003, 763032, 763062, 763091, 763121, 763150, 763180,
763209, 763239, 763268, 763298, 763327, 763357, 763386, 763416, 763445, 763475, 763504, 763533,
763563, 763592, 763622, 763651, 763680, 763710, 763739, 763768, 763798, 763827, 763856, 763886,
763915, 763944, 763974, 764003, 764032, 764061, 764091, 764120, 764149, 764178, 764207, 764237,
764266, 764295, 764324, 764353, 764382, 764412, 764441, 764470, 764499, 764528, 764557, 764586,
764615, 764644, 764673, 764703, 764732, 764761, 764790, 764819, 764848, 764877, 764906, 764935,
764964, 764993, 765021, 765050, 765079, 765108, 765137, 765166, 765195, 765224, 765253, 765282,
765311, 765339, 765368, 765397, 765426, 765455, 765484, 765512, 765541, 765570, 765599, 765627,
765656, 765685, 765714, 765742, 765771, 765800, 765829, 765857, 765886, 765915, 765943, 765972,
766001, 766029, 766058, 766087, 766115, 766144, 766172, 766201, 766230, 766258, 766287, 766315,
766344, 766372, 766401, 766429, 766458, 766486, 766515, 766543, 766572, 766600, 766629, 766657,
766686, 766714, 766743, 766771, 766800, 766828, 766856, 766885, 766913, 766941, 766970, 766998,
767027, 767055, 767083, 767112, 767140, 767168, 767196, 767225, 767253, 767281, 767310, 767338,
767366, 767394, 767422, 767451, 767479, 767507, 767535, 767563, 767592, 767620, 767648, 767676,
767704, 767732, 767761, 767789, 767817, 767845, 767873, 767901, 767929, 767957, 767985, 768013,
768041, 768069, 768097, 768125, 768153, 768181, 768209, 768237, 768265, 768293, 768321, 768349,
768377, 768405, 768433, 768461, 768489, 768517, 768545, 768573, 768600, 768628, 768656, 768684,
768712, 768740, 768768, 768795, 768823, 768851, 768879, 768907, 768934, 768962, 768990, 769018,
769045, 769073, 769101, 769129, 769156, 769184, 769212, 769239, 769267, 769295, 769322, 769350,
769378, 769405, 769433, 769461, 769488, 769516, 769543, 769571, 769599, 769626, 769654, 769681,
769709, 769736, 769764, 769792, 769819, 769847, 769874, 769902, 769929, 769957, 769984, 770011,
770039, 770066, 770094, 770121, 770149, 770176, 770204, 770231, 770258, 770286, 770313, 770340,
770368, 770395, 770423, 770450, 770477, 770504, 770532, 770559, 770586, 770614, 770641, 770668,
770696, 770723, 770750, 770777, 770805, 770832, 770859, 770886, 770913, 770941, 770968, 770995,
771022, 771049, 771076, 771104, 771131, 771158, 771185, 771212, 771239, 771266, 771293, 771321,
771348, 771375, 771402, 771429, 771456, 771483, 771510, 771537, 771564, 771591, 771618, 771645,
771672, 771699, 771726, 771753, 771780, 771807, 771834, 771861, 771888, 771914, 771941, 771968,
771995, 772022, 772049, 772076, 772103, 772130, 772156, 772183, 772210, 772237, 772264, 772291,
772317, 772344, 772371, 772398, 772424, 772451, 772478, 772505, 772531, 772558, 772585, 772612,
772638, 772665, 772692, 772718, 772745, 772772, 772798, 772825, 772852, 772878, 772905, 772932,
772958, 772985, 773012, 773038, 773065, 773091, 773118, 773144, 773171, 773198, 773224, 773251,
773277, 773304, 773330, 773357, 773383, 773410, 773436, 773463, 773489, 773516, 773542, 773569,
773595, 773621, 773648, 773674, 773701, 773727, 773754, 773780, 773806, 773833, 773859, 773885,
773912, 773938, 773964, 773991, 774017, 774043, 774070, 774096, 774122, 774149, 774175, 774201,
774227, 774254, 774280, 774306, 774332, 774359, 774385, 774411, 774437, 774464, 774490, 774516,
774542, 774568, 774594, 774621, 774647, 774673, 774699, 774725, 774751, 774777, 774804, 774830,
774856, 774882, 774908, 774934, 774960, 774986, 775012, 775038, 775064, 775090, 775116, 775142,
775168, 775194, 775220, 775246, 775272, 775298, 775324, 775350, 775376, 775402, 775428, 775454,
775480, 775506, 775532, 775558, 775583, 775609, 775635, 775661, 775687, 775713, 775739, 775764,
775790, 775816, 775842, 775868, 775894, 775919, 775945, 775971, 775997, 776022, 776048, 776074,
776100, 776126, 776151, 776177, 776203, 776228, 776254, 776280, 776306, 776331, 776357, 776383,
776408, 776434, 776460, 776485, 776511, 776536, 776562, 776588, 776613, 776639, 776665, 776690,
776716, 776741, 776767, 776792, 776818, 776844, 776869, 776895, 776920, 776946, 776971, 776997,
777022, 777048, 777073, 777099, 777124, 777150, 777175, 777201, 777226, 777251, 777277, 777302,
777328, 777353, 777379, 777404, 777429, 777455, 777480, 777505, 777531, 777556, 777582, 777607,
777632, 777658, 777683, 777708, 777733, 777759, 777784, 777809, 777835, 777860, 777885, 777910,
777936, 777961, 777986, 778011, 778037, 778062, 778087, 778112, 778138, 778163, 778188, 778213,
778238, 778263, 778289, 778314, 778339, 778364, 778389, 778414, 778439, 778465, 778490, 778515,
778540, 778565, 778590, 778615, 778640, 778665, 778690, 778715, 778740, 778765, 778790, 778815,
778840, 778866, 778891, 778916, 778940, 778965, 778990, 779015, 779040, 779065, 779090, 779115,
779140, 779165, 779190, 779215, 779240, 779265, 779290, 779315, 779339, 779364, 779389, 779414,
779439, 779464, 779489, 779513, 779538, 779563, 779588, 779613, 779638, 779662, 779687, 779712,
779737, 779761, 779786, 779811, 779836, 779861, 779885, 779910, 779935, 779959, 779984, 780009,
780034, 780058, 780083, 780108, 780132, 780157, 780182, 780206, 780231, 780256, 780280, 780305,
780329, 780354, 780379, 780403, 780428, 780453, 780477, 780502, 780526, 780551, 780575, 780600,
780624, 780649, 780674, 780698, 780723, 780747, 780772, 780796, 780821, 780845, 780870, 780894,
780919, 780943, 780967, 780992, 781016, 781041, 781065, 781090, 781114, 781139, 781163, 781187,
781212, 781236, 781261, 781285, 781309, 781334, 781358, 781382, 781407, 781431, 781455, 781480,
781504, 781528, 781553, 781577, 781601, 781626, 781650, 781674, 781698, 781723, 781747, 781771,
781795, 781820, 781844, 781868, 781892, 781917, 781941, 781965, 781989, 782013, 782038, 782062,
782086, 782110, 782134, 782158, 782182, 782207, 782231, 782255, 782279, 782303, 782327, 782351,
782375, 782400, 782424, 782448, 782472, 782496, 782520, 782544, 782568, 782592, 782616, 782640,
782664, 782688, 782712, 782736, 782760, 782784, 782808, 782832, 782856, 782880, 782904, 782928,
782952, 782976, 783000, 783024, 783048, 783072, 783096, 783119, 783143, 783167, 783191, 783215,
783239, 783263, 783287, 783310, 783334, 783358, 783382, 783406, 783430, 783454, 783477, 783501,
783525, 783549, 783573, 783596, 783620, 783644, 783668, 783691, 783715, 783739, 783763, 783786,
783810, 783834, 783858, 783881, 783905, 783929, 783952, 783976, 784000, 784024, 784047, 784071,
784095, 784118, 784142, 784165, 784189, 784213, 784236, 784260, 784284, 784307, 784331, 784354,
784378, 784402, 784425, 784449, 784472, 784496, 784519, 784543, 784567, 784590, 784614, 784637,
784661, 784684, 784708, 784731, 784755, 784778, 784802, 784825, 784849, 784872, 784896, 784919,
784943, 784966, 784989, 785013, 785036, 785060, 785083, 785107, 785130, 785153, 785177, 785200,
785223, 785247, 785270, 785294, 785317, 785340, 785364, 785387, 785410, 785434, 785457, 785480,
785504, 785527, 785550, 785574, 785597, 785620, 785643, 785667, 785690, 785713, 785736, 785760,
785783, 785806, 785829, 785853, 785876, 785899, 785922, 785946, 785969, 785992, 786015, 786038,
786061, 786085, 786108, 786131, 786154, 786177, 786200, 786224, 786247, 786270, 786293, 786316,
786339, 786362, 786385, 786408
};
static const unsigned int bsc_delta_table[4096] =
{
0, 131072, 180544, 212672, 236557, 255603, 271426, 284990, 296832, 307354, 316837, 325441,
333328, 340596, 347363, 353689, 359571, 365165, 370408, 375372, 380114, 384632, 388922, 393032,
396955, 400773, 404384, 407880, 411276, 414522, 417708, 420742, 423677, 426537, 429346, 432056,
434646, 437242, 439712, 442104, 444512, 446788, 449065, 451271, 453414, 455502, 457543, 459593,
461517, 463465, 465398, 467220, 468984, 470856, 472577, 474255, 476008, 477616, 479252, 480864,
482456, 484032, 485533, 487023, 488441, 489985, 491399, 492747, 494236, 495528, 496899, 498285,
499544, 500820, 502117, 503439, 504636, 505860, 507036, 508244, 509488, 510608, 511766, 512882,
514041, 515161, 516242, 517372, 518377, 519523, 520454, 521622, 522574, 523584, 524656, 525602,
526515, 527591, 528541, 529461, 530452, 531416, 532250, 533262, 534040, 535000, 535936, 536848,
537627, 538599, 539328, 540254, 541159, 541929, 542790, 543514, 544448, 545128, 546022, 546778,
547634, 548350, 549168, 549968, 550625, 551513, 552132, 552986, 553567, 554387, 555192, 555850,
556490, 557380, 557988, 558578, 559424, 560120, 560662, 561466, 562117, 562753, 563517, 564125,
564718, 565442, 566007, 566705, 567391, 567915, 568726, 569224, 569860, 570484, 571096, 571696,
572284, 572860, 573583, 573977, 574678, 575370, 575890, 576398, 577059, 577545, 578186, 578650,
579440, 579714, 580486, 580908, 581491, 582065, 582630, 583186, 583556, 584270, 584799, 585319,
585649, 586331, 586824, 587492, 587784, 588436, 588895, 589345, 589975, 590409, 590834, 591442,
591851, 592251, 592837, 593417, 593794, 594360, 594721, 595273, 595819, 596157, 596689, 597215,
597530, 598042, 598548, 599048, 599333, 599819, 600299, 600773, 601241, 601703, 602159, 602609,
603053, 603273, 603922, 604348, 604547, 605181, 605589, 605991, 606387, 607003, 607162, 607768,
608142, 608510, 608872, 609228, 609811, 610157, 610497, 610831, 611396, 611720, 612277, 612351,
613139, 613201, 613740, 614032, 614563, 614845, 615368, 615640, 615906, 616416, 616923, 617175,
617421, 617915, 618151, 618893, 618864, 619342, 619817, 620029, 620496, 620960, 621158, 621614,
621802, 622250, 622695, 623137, 623307, 623741, 623901, 624327, 624750, 625170, 625587, 625725,
626134, 626262, 626942, 627062, 627457, 627849, 628238, 628340, 629006, 629100, 629475, 629847,
629927, 630581, 630653, 631303, 631367, 631719, 632068, 632414, 632757, 633097, 633434, 633468,
634098, 634426, 634448, 635072, 635086, 635706, 635712, 636328, 636326, 636938, 636928, 637536,
637518, 638122, 638096, 638696, 638979, 639259, 639217, 639809, 640080, 640348, 640936, 640876,
641135, 641717, 641645, 642223, 642472, 642718, 642961, 643201, 643438, 644006, 644239, 644133,
644695, 645257, 645141, 645359, 645915, 646129, 646340, 646548, 647098, 646956, 647502, 647700,
648244, 648088, 648628, 648816, 649001, 649183, 649717, 649895, 650070, 650600, 650771, 650939,
651104, 651266, 651788, 651946, 652466, 652254, 652770, 653286, 653064, 653576, 653717, 654227,
654364, 654498, 654629, 655133, 655260, 655762, 655506, 656384, 656122, 656618, 656731, 657225,
657334, 657440, 657543, 658031, 658519, 658227, 659102, 658804, 659286, 659374, 659854, 659938,
660019, 660495, 660971, 660647, 661119, 661591, 661660, 661726, 662194, 662256, 662722, 662780,
662835, 663297, 663348, 663808, 663855, 664313, 664356, 664812, 664851, 664887, 665339, 665371,
665821, 665849, 666297, 666321, 666767, 666787, 667231, 667247, 667689, 667701, 668141, 668149,
668154, 669024, 668592, 669026, 669460, 669456, 669888, 669880, 669869, 670297, 670725, 670709,
671135, 671115, 671539, 671515, 671937, 671909, 672329, 672749, 672716, 672680, 673096, 673512,
673471, 673885, 673840, 674252, 674203, 674613, 674560, 674968, 675376, 675318, 675257, 676129,
676066, 676000, 676402, 676332, 676732, 677132, 677057, 677455, 677853, 677773, 677690, 678084,
678478, 678872, 678783, 678691, 679081, 679471, 679374, 679762, 680150, 680048, 680434, 680328,
680712, 681096, 680985, 681367, 681252, 681632, 682012, 681892, 682270, 682648, 682523, 682899,
682770, 683144, 683518, 683384, 683756, 683618, 684499, 684359, 684216, 684584, 684952, 684804,
685170, 685536, 685383, 685747, 686111, 685953, 686315, 686677, 686514, 686874, 687234, 687066,
687424, 687252, 688139, 687433, 688320, 688142, 688496, 688850, 688667, 689019, 688832, 689722,
689533, 689341, 690232, 689494, 690385, 690187, 690533, 690879, 691225, 691021, 690814, 691708,
691499, 691841, 691628, 691968, 692308, 692648, 692429, 692767, 693105, 692881, 693217, 693553,
693889, 693659, 693993, 693759, 694660, 694424, 694185, 695087, 694846, 695176, 694931, 695835,
695588, 695338, 696243, 695991, 696317, 696061, 696968, 696710, 697034, 696772, 697094, 697416,
697738, 697470, 697790, 698110, 698430, 698156, 698474, 698792, 698513, 699427, 699146, 698862,
699777, 699491, 699805, 700119, 699828, 700140, 700452, 700764, 700467, 700777, 701087, 701397,
701094, 701402, 701710, 702018, 701709, 702015, 702321, 702627, 702312, 702616, 702920, 703224,
702903, 703205, 703507, 703809, 703482, 703782, 704082, 704382, 704682, 704348, 704646, 704944,
704605, 704901, 705836, 704854, 705789, 705443, 706380, 705388, 706325, 706619, 706266, 706558,
706850, 706492, 707433, 707073, 707363, 706999, 707942, 707576, 707864, 708152, 707781, 708727,
708354, 708640, 708926, 708548, 708832, 709116, 709400, 709684, 709299, 710251, 709864, 709474,
710427, 710035, 710990, 710596, 710199, 711155, 710756, 711034, 711312, 711590, 711868, 711462,
711738, 712014, 712290, 711878, 712841, 712427, 712701, 712283, 713248, 712828, 713100, 713372,
713644, 713916, 713489, 713759, 714029, 714299, 713866, 714838, 714403, 714671, 714939, 714499,
715474, 715032, 715298, 715564, 715830, 715382, 716361, 715911, 716175, 716439, 715984, 716966,
716509, 716771, 717033, 716571, 717556, 717092, 717352, 717612, 717872, 718132, 717661, 717919,
718177, 718435, 718693, 718951, 718472, 718728, 718984, 719240, 719496, 719010, 720007, 719519,
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824563, 826927, 824728, 824810, 827177, 824975, 825057, 827427, 825222, 825304, 827677, 825469,
825551, 825633, 828010, 825798, 825880, 825962, 826044, 826126, 828509, 826291, 826373, 826455,
826537, 826619, 826701, 826783, 826865, 826947, 827029, 824799, 827192, 827274, 827356, 827438,
827520, 825284, 827683, 827765, 827847, 825607, 828010, 828092, 828174, 825930, 828337, 826091,
828500, 828582, 826333, 828745, 826494, 828908, 826655, 829071, 826816, 829234, 826977, 829397,
827138, 827218, 829641, 827379, 827459, 829885, 827620, 827700, 830129, 827861, 827941, 828021,
828101, 830535, 828262, 828342, 828422, 828502, 828582, 828662, 828742, 828822, 828902, 828982,
829062, 829142, 829222, 829302, 829382, 829462, 829542, 829622, 829702, 827408, 829861, 829941,
830021, 830101, 827802, 830260, 830340, 830420, 828117, 830579, 830659, 828353, 830818, 828510,
830977, 831057, 828746, 831216, 828903, 831375, 829060, 831534, 829217, 831693, 829374, 829452,
831931, 829609, 829687, 832169, 829844, 829922, 832407, 830079, 830157, 830235, 832724, 830392,
830470, 830548, 830626, 833120, 830783, 830861, 830939, 831017, 831095, 831173, 831251, 831329,
831407, 831485, 831563, 831641, 831719, 831797, 831875, 831953, 832031, 829675, 832186, 832264,
832342, 832420, 830059, 832575, 832653, 832731, 830366, 832886, 832964, 830596, 833119, 833197,
830826, 833352, 830979, 833507, 833585, 831209, 833740, 831362, 833895, 831515, 834050, 831668,
831744, 834282, 831897, 834437, 832050, 832126, 834669, 832279, 832355, 834901, 832508, 832584,
832660, 835210, 832813, 832889, 832965, 833041, 833117, 835673, 833270, 833346, 833422, 833498,
833574, 833650, 833726, 833802, 833878, 833954, 834030, 834106, 834182, 834258, 834334, 834410,
831989, 834561, 834637, 834713, 834789, 834865, 832438, 835016, 835092, 835168, 832737, 835319,
835395, 832961, 835546, 835622, 833185, 835773, 835849, 833409, 836000, 833558, 836151, 833707,
836302, 833856, 836453, 834005, 836604, 834154, 836755, 834303, 834377, 836981, 834526, 837132,
834675, 834749, 837358, 834898, 834972, 835046, 837659, 835195, 835269, 835343, 835417, 838035,
835566, 835640, 835714, 835788, 835862, 835936, 836010, 836084, 836158, 838786, 836307, 836381,
836455, 833971, 836602, 836676, 836750, 836824, 836898, 836972, 837046, 837120, 837194, 834700,
837341, 837415, 837489, 837563, 835064, 837710, 837784, 835282, 837931, 838005, 838079, 835573,
838226, 835718, 838373, 838447, 835936, 838594, 836081, 838741, 836226, 838888, 836371, 839035,
836516, 839182, 836661, 839329, 836806, 839476, 836951, 837023, 839696, 837168, 837240, 839916,
837385, 837457, 837529, 840209, 837674, 837746, 837818, 840502, 837963, 838035, 838107, 838179,
838251, 840941, 838396, 838468, 838540, 838612, 838684, 838756, 838828, 838900, 838972, 839044,
839116, 839188, 839260, 839332, 839404, 839476, 839548, 836984, 839691, 839763, 839835, 839907,
839979, 837409, 840122, 840194, 840266, 837692, 840409, 840481, 840553, 837975, 840696, 840768,
838187, 840911, 838328, 841054, 841126, 838540, 841269, 838681, 841412, 838822, 841555, 838963,
841698, 839104, 841841, 839245, 841984, 839386, 842127, 839527, 839597, 842341, 839738, 839808,
842555, 839949, 840019, 842769, 840160, 840230, 840300, 843054, 840441, 840511, 840581, 840651,
843410, 840792, 840862, 840932, 841002, 841072, 841142, 841212, 841282, 844050, 841423, 841493,
841563, 841633, 841703, 841773, 839138, 841912, 841982, 842052, 842122, 842192, 842262, 842332,
842402, 842472, 839827, 842611, 842681, 842751, 842821, 840171, 842960, 843030, 843100, 840446,
843239, 843309, 840652, 843448, 843518, 840858, 843657, 843727, 841064, 843866, 841201, 844005,
841338, 844144, 841475, 844283, 844353, 841681, 841749, 844561, 841886, 844700, 842023, 844839,
842160, 842228, 845047, 842365, 845186, 842502, 842570, 845394, 842707, 842775, 842843, 845671,
842980, 843048, 843116, 845948, 843253, 843321, 843389, 843457, 843525, 846363, 843662, 843730,
843798, 843866, 843934, 844002, 844070, 844138, 844206, 844274, 844342, 844410, 844478, 844546,
844614, 844682, 844750, 844818, 844886, 844954, 845022, 845090, 842365, 845225, 845293, 845361,
845429, 845497, 842766, 845632, 845700, 845768, 843033, 845903, 845971, 843233, 846106, 846174,
843433, 846309, 846377, 843633, 846512, 846580, 843833, 846715, 843966, 846850, 844099, 846985,
847053, 844299, 847188, 844432, 847323, 844565, 844631, 847525, 844764, 847660, 844897, 844963,
847862, 845096, 847997, 845229, 845295, 848199, 845428, 845494, 845560, 848468, 845693, 845759,
848670, 845892, 845958, 846024, 846090, 849006, 846223, 846289, 846355, 846421, 846487, 846553,
846619, 849543, 846752, 846818, 846884, 846950, 847016, 847082, 847148, 847214, 847280, 847346,
847412, 847478, 847544, 847610, 844803, 847741, 847807, 847873, 847939, 848005, 848071, 848137,
845322, 848268, 848334, 848400, 848466, 845646, 848597, 848663, 848729, 845905, 848860, 848926,
846099, 849057, 849123, 846293, 849254, 849320, 846487, 849451, 846616, 849582, 849648, 846810,
849779, 846939, 849910, 847068, 850041, 847197, 850172, 847326, 850303, 847455, 850434, 847584,
850565, 847713, 847777, 850761, 847906, 847970, 850957, 848099, 848163, 851153, 848292, 848356,
851349, 848485, 848549, 848613, 851610, 848742, 848806, 848870, 851871, 848999, 849063, 849127,
849191, 849255, 852262, 849384, 849448, 849512, 849576, 849640, 849704, 849768, 849832, 849896,
849960, 850024, 850088, 850152, 850216, 850280, 850344, 850408, 850472, 850536, 850600, 850664,
850728, 850792, 847889, 850919, 850983, 851047, 851111, 851175, 848266, 851302, 851366, 851430,
851494, 848580, 851621, 851685, 851749, 848831, 851876, 851940, 849019, 852067, 852131, 849207,
852258, 852322, 849395, 852449, 849520, 852576, 852640, 849708, 852767, 849833, 852894, 849958,
853021, 850083, 853148, 850208, 853275, 850333, 853402, 850458, 850520, 853592, 850645, 853719,
850770, 850832, 853909, 850957, 854036, 851082, 851144, 851206, 854289, 851331, 851393, 854479,
851518, 851580, 851642, 854732, 851767, 851829, 851891, 851953, 855048, 852078, 852140, 852202,
852264, 852326, 852388, 855490, 852513, 852575, 852637, 852699, 852761, 852823, 852885, 852947,
853009, 853071, 853133, 853195, 853257, 853319, 853381, 853443, 853505, 853567, 853629, 853691,
850692, 853814, 853876, 853938, 854000, 854062, 854124, 851118, 854247, 854309, 854371, 854433,
851422, 854556, 854618, 854680, 851665, 854803, 854865, 854927, 851908, 855050, 855112, 852090,
855235, 855297, 852272, 855420, 852393, 855543, 855605, 852575, 855728, 852696, 855851, 852817,
855974, 852938, 856097, 853059, 856220, 853180, 856343, 853301, 856466, 853422, 856589, 853543,
856712, 853664, 853724, 856896, 853845, 857019, 853966, 854026, 857203, 854147, 854207, 854267,
857448, 854388, 854448, 857632, 854569, 854629, 854689, 857877, 854810, 854870, 854930, 854990,
858183, 855111, 855171, 855231, 855291, 855351, 858550, 855472, 855532, 855592, 855652, 855712,
855772, 855832, 855892, 855952, 856012, 856072, 856132, 856192, 856252, 856312, 856372, 856432,
856492, 856552, 856612, 856672, 856732, 856792, 856852, 856912, 853807, 857031, 857091, 857151,
857211, 857271, 857331, 854219, 857450, 857510, 857570, 854454, 857689, 857749, 857809, 854689,
857928, 857988, 858048, 854924, 858167, 858227, 855100, 858346, 858406, 855276, 858525, 858585,
855452, 858704, 855569, 858823, 858883, 855745, 859002, 855862, 859121, 855979, 859240, 856096,
859359, 856213, 859478, 856330, 859597, 856447, 859716, 856564, 859835, 856681, 856739, 860013,
856856, 860132, 856973, 857031, 860310, 857148, 857206, 860488, 857323, 857381, 860666, 857498,
857556, 860844, 857673, 857731, 857789, 861081, 857906, 857964, 858022, 858080, 861377, 858197,
858255, 858313, 858371, 858429, 861732, 858546, 858604, 858662, 858720, 858778, 858836, 858894,
858952, 859010, 862323, 859127, 859185, 859243, 859301, 859359, 859417, 859475, 859533, 859591,
859649, 856441, 859764, 859822, 859880, 859938, 859996, 860054, 860112, 860170, 860228, 860286,
857067, 860401, 860459, 860517, 860575, 860633, 857408, 860748, 860806, 860864, 857635, 860979,
861037, 861095, 857862, 861210, 861268, 861326, 858089, 861441, 861499, 858259, 861614, 861672,
858429, 861787, 861845, 858599, 861960, 858712, 862075, 862133, 858882, 862248, 858995, 862363,
859108, 862478, 859221, 862593, 859334, 862708, 859447, 862823, 859560, 862938, 859673, 863053,
859786, 863168, 859899, 863283, 860012, 860068, 863455, 860181, 860237, 863627, 860350, 863742,
860463, 860519, 863914, 860632, 860688, 860744, 864143, 860857, 860913, 864315, 861026, 861082,
861138, 861194, 864601, 861307, 861363, 861419, 861475, 864887, 861588, 861644, 861700, 861756,
861812, 865230, 861925, 861981, 862037, 862093, 862149, 862205, 862261, 862317, 862373, 862429,
862485, 862541, 862597, 862653, 862709, 862765, 862821, 862877, 862933, 862989, 863045, 863101,
863157, 863213, 863269, 863325, 863381, 863437, 863493, 860157, 863604, 863660, 863716, 863772,
863828, 863884, 860541, 863995, 864051, 864107, 864163, 860815, 864274, 864330, 864386, 861034,
864497, 864553, 864609, 861253, 864720, 864776, 861417, 864887, 864943, 861581, 865054, 865110,
861745, 865221, 865277, 861909, 865388, 862018, 865499, 865555, 862182, 865666, 862291, 865777,
862400, 865888, 865944, 862564, 866055, 862673, 866166, 862782, 866277, 862891, 862945, 866443,
863054, 866554, 863163, 866665, 863272, 866776, 863381, 863435, 866942, 863544, 863598, 867108,
863707, 867219, 863816, 863870, 863924, 867440, 864033, 864087, 867606, 864196, 864250, 867772,
864359, 864413, 864467, 867993, 864576, 864630, 864684, 864738, 868269, 864847, 864901, 864955,
865009, 865063, 868600, 865172, 865226, 865280, 865334, 865388, 865442, 865496, 869041, 865605,
865659, 865713, 865767, 865821, 865875, 865929, 865983, 866037, 866091, 866145, 866199, 866253,
866307, 866361, 866415, 866469, 866523, 866577, 866631, 866685, 863226, 866792, 866846, 866900,
866954, 867008, 867062, 867116, 867170, 863702, 867277, 867331, 867385, 867439, 867493, 864019,
867600, 867654, 867708, 864230, 867815, 867869, 867923, 864441, 868030, 868084, 868138, 864652,
868245, 868299, 864810, 868406, 868460, 864968, 868567, 868621, 865126, 868728, 868782, 865284,
868889, 868943, 865442, 869050, 865547, 869157, 865652, 869264, 869318, 865810, 869425, 865915,
869532, 866020, 869639, 866125, 869746, 866230, 869853, 866335, 869960, 866440, 870067, 866545,
866597, 870227, 866702, 870334, 866807, 870441, 866912, 866964, 870601, 867069, 867121, 870761,
867226, 867278, 870921, 867383, 867435, 871081, 867540, 867592, 871241, 867697, 867749, 867801,
871454, 867906, 867958, 868010, 871667, 868115, 868167, 868219, 871880, 868324, 868376, 868428,
868480, 868532, 872199, 868637, 868689, 868741, 868793, 868845, 868897, 872571, 869002, 869054,
869106, 869158, 869210, 869262, 869314, 869366, 869418, 869470, 869522, 869574, 869626, 869678,
869730, 869782, 869834, 869886, 869938, 869990, 870042, 870094, 870146, 870198, 870250, 870302,
870354, 870406, 870458, 866858, 870561, 870613, 870665, 870717, 870769, 870821, 867214, 870924,
870976, 871028, 871080, 871132, 867519, 871235, 871287, 871339, 867722, 871442, 871494, 871546,
871598, 867976, 871701, 871753, 868128, 871856, 871908, 871960, 868331, 872063, 872115, 868483,
872218, 872270, 868635, 872373, 868736, 872476, 872528, 868888, 872631, 872683, 869040, 872786,
869141, 872889, 869242, 872992, 873044, 869394, 873147, 869495, 873250, 869596, 873353, 869697,
873456, 869798, 873559, 869899, 873662, 870000, 873765, 870101, 870151, 873919, 870252, 874022,
870353, 874125, 870454, 870504, 874279, 870605, 870655, 874433, 870756, 874536, 870857, 870907,
874690, 871008, 871058, 871108, 874895, 871209, 871259, 875049, 871360, 871410, 871460, 875254,
871561, 871611, 871661, 875459, 871762, 871812, 871862, 875664, 871963, 872013, 872063, 872113,
872163, 875971, 872264, 872314, 872364, 872414, 872464, 872514, 876329, 872615, 872665, 872715,
872765, 872815, 872865, 872915, 872965, 873015, 873065, 873115, 873165, 873215, 873265, 873315,
877146, 873416, 873466, 869732, 873565, 873615, 873665, 873715, 873765, 873815, 873865, 873915,
873965, 874015, 874065, 874115, 874165, 874215, 874265, 870515, 874364, 874414, 874464, 874514,
874564, 874614, 870857, 874713, 874763, 874813, 874863, 874913, 871150, 875012, 875062, 875112,
871345, 875211, 875261, 875311, 875361, 871589, 875460, 875510, 871735, 875609, 875659, 875709,
871930, 875808, 875858, 872076, 875957, 876007, 872222, 876106, 876156, 872368, 876255, 872465,
876354, 876404, 872611, 876503, 876553, 872757, 876652, 872854, 876751, 872951, 876850, 873048,
876949, 876999, 873194, 877098, 873291, 877197, 873388, 877296, 873485, 877395, 873582, 877494,
873679, 873727, 877642, 873824, 877741, 873921, 877840, 874018, 877939, 874115, 874163, 878087,
874260, 878186, 874357, 874405, 878334, 874502, 874550, 878482, 874647, 874695, 878630, 874792,
874840, 878778, 874937, 874985, 878926, 875082, 875130, 875178, 879123, 875275, 875323, 875371,
879320, 875468, 875516, 875564, 879517, 875661, 875709, 875757, 875805, 879763, 875902, 875950,
875998, 876046, 876094, 876142, 880107, 876239, 876287, 876335, 876383, 876431, 876479, 876527,
880500, 876624, 876672, 876720, 876768, 876816, 876864, 876912, 876960, 877008, 877056, 877104,
877152, 877200, 877248, 877296, 877344, 877392, 877440, 877488, 877536, 877584, 877632, 877680,
877728, 877776, 877824, 877872, 877920, 877968, 874061, 878063, 878111, 878159, 878207, 878255,
878303, 878351, 874436, 878446, 878494, 878542, 878590, 878638, 878686, 874764, 878781, 878829,
878877, 878925, 874998, 879020, 879068, 879116, 875185, 879211, 879259, 879307, 875372, 879402,
879450, 879498, 875559, 879593, 879641, 875699, 879736, 879784, 879832, 875886, 879927, 879975,
876026, 880070, 876119, 880165, 880213, 876259, 880308, 880356, 876399, 880451, 876492, 880546,
880594, 876632, 880689, 876725, 880784, 876818, 880879, 880927, 876958, 881022, 877051, 881117,
877144, 881212, 877237, 881307, 877330, 881402, 877423, 881497, 877516, 881592, 877609, 881687,
877702, 877748, 881829, 877841, 881924, 877934, 882019, 878027, 878073, 882161, 878166, 878212,
882303, 878305, 882398, 878398, 878444, 882540, 878537, 878583, 882682, 878676, 878722, 882824,
878815, 878861, 882966, 878954, 879000, 879046, 883155, 879139, 879185, 879231, 883344, 879324,
879370, 879416, 883533, 879509, 879555, 879601, 883722, 879694, 879740, 879786, 879832, 879878,
884005, 879971, 880017, 880063, 880109, 880155, 884288, 880248, 880294, 880340, 880386, 880432,
880478, 880524, 880570, 884712
};
static INLINE long long bsc_entropy(int n)
{
if (n < 0x1000) return (long long) n * bsc_code_table[n];
if (n < 0x100000) return (long long) n * (8 * 65536 + bsc_code_table[n >> 8]);
if (n < 0x10000000) return (long long) n * (16 * 65536 + bsc_code_table[n >> 16]);
return (long long) n * (20 * 65536 + bsc_code_table[n >> 20]);
}
static INLINE long long bsc_delta(int n)
{
if (n < 0x1000) return (long long) bsc_delta_table[n];
if ((n & 0xff) != 0xff)
{
if (n < 0x100000) return (long long)(bsc_code_table[n >> 8] + 8 * 65536);
if (n < 0x10000000) return (long long)(bsc_code_table[n >> 16] + 16 * 65536);
return (long long)(bsc_code_table[n >> 20] + 20 * 65536);
}
return bsc_entropy(n + 1) - bsc_entropy(n);
}
#endif
/*-----------------------------------------------------------*/
/* End tables.h */
/*-----------------------------------------------------------*/

165
bsc/libbsc/libbsc.h Normal file
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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to compression/decompression functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
/*--
Sort Transform is patented by Michael Schindler under US patent 6,199,064.
However for research purposes this algorithm is included in this software.
So if you are of the type who should worry about this (making money) worry away.
The author shall have no liability with respect to the infringement of
copyrights, trade secrets or any patents by this software. In no event will
the author be liable for any lost revenue or profits or other special,
indirect and consequential damages.
Sort Transform is disabled by default and can be enabled by defining the
preprocessor macro LIBBSC_SORT_TRANSFORM_SUPPORT at compile time.
--*/
#ifndef _LIBBSC_LIBBSC_H
#define _LIBBSC_LIBBSC_H
#define LIBBSC_NO_ERROR 0
#define LIBBSC_BAD_PARAMETER -1
#define LIBBSC_NOT_ENOUGH_MEMORY -2
#define LIBBSC_NOT_COMPRESSIBLE -3
#define LIBBSC_NOT_SUPPORTED -4
#define LIBBSC_UNEXPECTED_EOB -5
#define LIBBSC_DATA_CORRUPT -6
#define LIBBSC_GPU_ERROR -7
#define LIBBSC_GPU_NOT_SUPPORTED -8
#define LIBBSC_GPU_NOT_ENOUGH_MEMORY -9
#define LIBBSC_SKIP_DATA -10
#define LIBBSC_BLOCKSORTER_NONE 0
#define LIBBSC_BLOCKSORTER_BWT 1
#ifdef LIBBSC_SORT_TRANSFORM_SUPPORT
#define LIBBSC_BLOCKSORTER_ST3 3
#define LIBBSC_BLOCKSORTER_ST4 4
#define LIBBSC_BLOCKSORTER_ST5 5
#define LIBBSC_BLOCKSORTER_ST6 6
#define LIBBSC_BLOCKSORTER_ST7 7
#define LIBBSC_BLOCKSORTER_ST8 8
#endif
#define LIBBSC_CODER_NONE 0
#define LIBBSC_CODER_QLFC_STATIC 1
#define LIBBSC_CODER_QLFC_ADAPTIVE 2
#define LIBBSC_FEATURE_NONE 0
#define LIBBSC_FEATURE_FASTMODE 1
#define LIBBSC_FEATURE_MULTITHREADING 2
#define LIBBSC_FEATURE_LARGEPAGES 4
#define LIBBSC_FEATURE_CUDA 8
#define LIBBSC_DEFAULT_LZPHASHSIZE 16
#define LIBBSC_DEFAULT_LZPMINLEN 128
#define LIBBSC_DEFAULT_BLOCKSORTER LIBBSC_BLOCKSORTER_BWT
#define LIBBSC_DEFAULT_CODER LIBBSC_CODER_QLFC_STATIC
#define LIBBSC_DEFAULT_FEATURES LIBBSC_FEATURE_FASTMODE | LIBBSC_FEATURE_MULTITHREADING
#define LIBBSC_HEADER_SIZE 28
#ifdef __cplusplus
extern "C" {
#endif
/**
* You should call this function before you call any of the other functions in libbsc.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_init(int features);
/**
* Compress a memory block.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n + LIBBSC_HEADER_SIZE bytes.
* @param n - the length of the input memory block.
* @param lzpHashSize[0, 10..28] - the hash table size if LZP enabled, 0 otherwise.
* @param lzpMinLen[0, 4..255] - the minimum match length if LZP enabled, 0 otherwise.
* @param blockSorter[ST3..ST8, BWT] - the block sorting algorithm.
* @param coder[MTF or QLFC] - the entropy coding algorithm.
* @param features - the set of additional features.
* @return the length of compressed memory block if no error occurred, error code otherwise.
*/
int bsc_compress(unsigned char * input, unsigned char * output, int n, int lzpHashSize, int lzpMinLen, int blockSorter, int coder, int features);
/**
* Store a memory block.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n + LIBBSC_HEADER_SIZE bytes.
* @param n - the length of the input memory block.
* @param features - the set of additional features.
* @return the length of stored memory block if no error occurred, error code otherwise.
*/
int bsc_store(const unsigned char * input, unsigned char * output, int n, int features);
/**
* Determinate the sizes of input and output memory blocks for bsc_decompress function.
* @param blockHeader - the header of input(compressed) memory block of headerSize bytes.
* @param headerSize - the length of header, should be at least LIBBSC_HEADER_SIZE bytes.
* @param pBlockSize[out] - the length of the input memory block for bsc_decompress function.
* @param pDataSize[out] - the length of the output memory block for bsc_decompress function.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_block_info(unsigned char * blockHeader, int headerSize, int * pBlockSize, int * pDataSize, int features);
/**
* Decompress a memory block.
* Note : You should call bsc_block_info function to determinate the sizes of input and output memory blocks.
* @param input - the input memory block of inputSize bytes.
* @param inputSize - the length of the input memory block.
* @param output - the output memory block of outputSize bytes.
* @param outputSize - the length of the output memory block.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_decompress(unsigned char * input, int inputSize, unsigned char * output, int outputSize, int features);
int bsc_decompress_old(const unsigned char * input, int inputSize, unsigned char * output, int outputSize, int features);
#ifdef __cplusplus
}
#endif
#endif
/*-------------------------------------------------*/
/* End libbsc.h */
/*-------------------------------------------------*/

632
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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Compression/decompression functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <stdio.h>
#include "../platform/platform.h"
#include "../libbsc.h"
#include "../adler32/adler32.h"
#include "../bwt/bwt.h"
#include "../lzp/lzp.h"
#include "../coder/coder.h"
int bsc_init(int features)
{
int result = LIBBSC_NO_ERROR;
if (result == LIBBSC_NO_ERROR) result = bsc_platform_init(features);
if (result == LIBBSC_NO_ERROR) result = bsc_coder_init(features);
return result;
}
int bsc_store(const unsigned char * input, unsigned char * output, int n, int features)
{
unsigned int adler32_data = bsc_adler32(input, n, features);
memmove(output + LIBBSC_HEADER_SIZE, input, n);
*(int *)(output + 0) = n + LIBBSC_HEADER_SIZE;
*(int *)(output + 4) = n;
*(int *)(output + 8) = 0;
*(int *)(output + 12) = 0;
*(int *)(output + 16) = adler32_data;
*(int *)(output + 20) = adler32_data;
*(int *)(output + 24) = bsc_adler32(output, 24, features);
return n + LIBBSC_HEADER_SIZE;
}
int bsc_compress_inplace(unsigned char * data, int n, int lzpHashSize, int lzpMinLen, int blockSorter, int coder, int features)
{
int indexes[256];
unsigned char num_indexes;
int mode = 0;
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : mode = LIBBSC_BLOCKSORTER_BWT; break;
default : return LIBBSC_BAD_PARAMETER;
}
switch (coder)
{
case LIBBSC_CODER_QLFC_STATIC: mode += (LIBBSC_CODER_QLFC_STATIC << 5); break;
case LIBBSC_CODER_QLFC_ADAPTIVE: mode += (LIBBSC_CODER_QLFC_ADAPTIVE << 5); break;
default : return LIBBSC_BAD_PARAMETER;
}
if (lzpMinLen != 0 || lzpHashSize != 0)
{
if (lzpMinLen < 4 || lzpMinLen > 255) return LIBBSC_BAD_PARAMETER;
if (lzpHashSize < 10 || lzpHashSize > 28) return LIBBSC_BAD_PARAMETER;
mode += (lzpMinLen << 8);
mode += (lzpHashSize << 16);
}
if (n < 0 || n > 1073741824) return LIBBSC_BAD_PARAMETER;
if (n <= LIBBSC_HEADER_SIZE)
{
return bsc_store(data, data, n, features);
}
unsigned int adler32_data = bsc_adler32(data, n, features);
int lzSize = n;
if (mode != (mode & 0xff))
{
unsigned char * buffer = (unsigned char *)bsc_malloc(n);
if (buffer == NULL) return LIBBSC_NOT_ENOUGH_MEMORY;
lzSize = bsc_lzp_compress(data, buffer, n, lzpHashSize, lzpMinLen, features);
if (lzSize < LIBBSC_NO_ERROR)
{
lzSize = n; mode &= 0xff;
}
else
{
memcpy(data, buffer, lzSize);
}
bsc_free(buffer);
}
if (lzSize <= LIBBSC_HEADER_SIZE)
{
blockSorter = LIBBSC_BLOCKSORTER_BWT;
mode = (mode & 0xffffffe0) | LIBBSC_BLOCKSORTER_BWT;
}
int index = LIBBSC_BAD_PARAMETER; num_indexes = 0;
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : index = bsc_bwt_encode(data, lzSize, &num_indexes, indexes, features); break;
default : return LIBBSC_BAD_PARAMETER;
}
if (n < 64 * 1024) num_indexes = 0;
if (index < LIBBSC_NO_ERROR)
{
return index;
}
if (unsigned char * buffer = (unsigned char *)bsc_malloc(lzSize + 4096))
{
int result = bsc_coder_compress(data, buffer, lzSize, coder, features);
if (result >= LIBBSC_NO_ERROR) memcpy(data + LIBBSC_HEADER_SIZE, buffer, result);
bsc_free(buffer);
if ((result < LIBBSC_NO_ERROR) || (result + 1 + 4 * num_indexes >= n))
{
return LIBBSC_NOT_COMPRESSIBLE;
}
{
if (num_indexes > 0)
{
memcpy(data + LIBBSC_HEADER_SIZE + result, indexes, 4 * num_indexes);
}
data[LIBBSC_HEADER_SIZE + result + 4 * num_indexes] = num_indexes;
result += 1 + 4 * num_indexes;
}
*(int *)(data + 0) = result + LIBBSC_HEADER_SIZE;
*(int *)(data + 4) = n;
*(int *)(data + 8) = mode;
*(int *)(data + 12) = index;
*(int *)(data + 16) = adler32_data;
*(int *)(data + 20) = bsc_adler32(data + LIBBSC_HEADER_SIZE, result, features);
*(int *)(data + 24) = bsc_adler32(data, 24, features);
return result + LIBBSC_HEADER_SIZE;
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
int bsc_compress(unsigned char * input, unsigned char * output, int n, int lzpHashSize, int lzpMinLen, int blockSorter, int coder, int features)
{
if (input == output)
{
return bsc_compress_inplace(output, n, lzpHashSize, lzpMinLen, blockSorter, coder, features);
}
int indexes[256];
unsigned char num_indexes;
int mode = 0;
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : mode = LIBBSC_BLOCKSORTER_BWT; break;
default : return LIBBSC_BAD_PARAMETER;
}
switch (coder)
{
case LIBBSC_CODER_QLFC_STATIC: mode += (LIBBSC_CODER_QLFC_STATIC << 5); break;
case LIBBSC_CODER_QLFC_ADAPTIVE: mode += (LIBBSC_CODER_QLFC_ADAPTIVE << 5); break;
default : return LIBBSC_BAD_PARAMETER;
}
if (lzpMinLen != 0 || lzpHashSize != 0)
{
if (lzpMinLen < 4 || lzpMinLen > 255) return LIBBSC_BAD_PARAMETER;
if (lzpHashSize < 10 || lzpHashSize > 28) return LIBBSC_BAD_PARAMETER;
mode += (lzpMinLen << 8);
mode += (lzpHashSize << 16);
}
if (n < 0 || n > 1073741824) return LIBBSC_BAD_PARAMETER;
if (n <= LIBBSC_HEADER_SIZE)
{
return (LIBBSC_SKIP_DATA);
}
int lzSize = 0;
if (mode != (mode & 0xff))
{
lzSize = bsc_lzp_compress(input, output, n, lzpHashSize, lzpMinLen, features);
if (lzSize < LIBBSC_NO_ERROR || n - lzSize <= LIBBSC_HEADER_SIZE)
{
mode &= 0xff;
}
}
if (mode == (mode & 0xff))
{
lzSize = n; memcpy(output, input, n);
}
if (lzSize <= LIBBSC_HEADER_SIZE)
{
blockSorter = LIBBSC_BLOCKSORTER_BWT;
mode = (mode & 0xffffffe0) | LIBBSC_BLOCKSORTER_BWT;
}
int index = LIBBSC_BAD_PARAMETER; num_indexes = 0;
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : index = bsc_bwt_encode(output, lzSize, &num_indexes, indexes, features); break;
default : return LIBBSC_BAD_PARAMETER;
}
if (n < 64 * 1024) num_indexes = 0;
if (index < LIBBSC_NO_ERROR)
{
return index;
}
int coded = 1;
int result = bsc_coder_compress(output, input, lzSize, coder, features);
if ((result < LIBBSC_NO_ERROR) || (result + 1 + 4 * num_indexes >= n)) {
coded = 0;
result = lzSize;
/*
* Original input has been destroyed so we have to decode BWT.
*/
bsc_bwt_decode(output, lzSize, index, num_indexes, indexes, features);
coded = 0;
if (mode == (mode & 0xff)) {
/*
* No coding, no LZP. No compression whatsoever.
*/
memcpy(input, output, n);
return (LIBBSC_SKIP_DATA);
}
/*
* At least LZP is successful.
*/
memmove(output + LIBBSC_HEADER_SIZE, output, result);
} else {
memcpy(output + LIBBSC_HEADER_SIZE, input, result);
}
if (coded > 0) {
if (num_indexes > 0)
{
memcpy(output + LIBBSC_HEADER_SIZE + result, indexes, 4 * num_indexes);
}
output[LIBBSC_HEADER_SIZE + result + 4 * num_indexes] = num_indexes;
result += 1 + 4 * num_indexes;
}
*(int *)(output + 0) = result + LIBBSC_HEADER_SIZE;
*(int *)(output + 4) = n;
*(int *)(output + 8) = mode;
*(int *)(output + 12) = index;
*(int *)(output + 16) = features;
*(int *)(output + 20) = coded;
*(int *)(output + 24) = bsc_adler32(output, 24, features);
return result + LIBBSC_HEADER_SIZE;
return LIBBSC_NOT_ENOUGH_MEMORY;
}
int bsc_block_info(unsigned char * blockHeader, int headerSize, int * pBlockSize, int * pDataSize, int features)
{
if (headerSize < LIBBSC_HEADER_SIZE)
{
return LIBBSC_UNEXPECTED_EOB;
}
if (*(unsigned int *)(blockHeader + 24) != bsc_adler32(blockHeader, 24, features))
{
return LIBBSC_DATA_CORRUPT;
}
int blockSize = *(int *)(blockHeader + 0);
int dataSize = *(int *)(blockHeader + 4);
int mode = *(int *)(blockHeader + 8);
int index = *(int *)(blockHeader + 12);
int lzpHashSize = (mode >> 16) & 0xff;
int lzpMinLen = (mode >> 8) & 0xff;
int coder = (mode >> 5) & 0x7;
int blockSorter = (mode >> 0) & 0x1f;
int test_mode = 0;
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : test_mode = LIBBSC_BLOCKSORTER_BWT; break;
default : if (blockSorter > 0) return LIBBSC_DATA_CORRUPT;
}
switch (coder)
{
case LIBBSC_CODER_QLFC_STATIC: test_mode += (LIBBSC_CODER_QLFC_STATIC << 5); break;
case LIBBSC_CODER_QLFC_ADAPTIVE: test_mode += (LIBBSC_CODER_QLFC_ADAPTIVE << 5); break;
default : return LIBBSC_BAD_PARAMETER;
}
if (lzpMinLen != 0 || lzpHashSize != 0)
{
if (lzpMinLen < 4 || lzpMinLen > 255) return LIBBSC_DATA_CORRUPT;
if (lzpHashSize < 10 || lzpHashSize > 28) return LIBBSC_DATA_CORRUPT;
test_mode += (lzpMinLen << 8);
test_mode += (lzpHashSize << 16);
}
if (test_mode != mode)
{
return LIBBSC_DATA_CORRUPT;
}
if (blockSize < LIBBSC_HEADER_SIZE || blockSize > LIBBSC_HEADER_SIZE + dataSize)
{
return LIBBSC_DATA_CORRUPT;
}
if (index < 0 || index > dataSize)
{
return LIBBSC_DATA_CORRUPT;
}
if (pBlockSize != NULL) *pBlockSize = blockSize;
if (pDataSize != NULL) *pDataSize = dataSize;
return LIBBSC_NO_ERROR;
}
int bsc_decompress_inplace(unsigned char * data, int inputSize, int outputSize, int features)
{
int indexes[256];
unsigned char num_indexes;
int blockSize = 0, dataSize = 0;
int info = bsc_block_info(data, inputSize, &blockSize, &dataSize, features);
if (info != LIBBSC_NO_ERROR)
{
return info;
}
if (inputSize < blockSize || outputSize < dataSize)
{
return LIBBSC_UNEXPECTED_EOB;
}
if (*(unsigned int *)(data + 20) != bsc_adler32(data + LIBBSC_HEADER_SIZE, blockSize - LIBBSC_HEADER_SIZE, features))
{
return LIBBSC_DATA_CORRUPT;
}
int mode = *(int *)(data + 8);
if (mode == 0)
{
memmove(data, data + LIBBSC_HEADER_SIZE, dataSize);
return LIBBSC_NO_ERROR;
}
int index = *(int *)(data + 12);
unsigned int adler32_data = *(int *)(data + 16);
num_indexes = data[blockSize - 1];
if (num_indexes > 0)
{
memcpy(indexes, data + blockSize - 1 - 4 * num_indexes, 4 * num_indexes);
}
int lzpHashSize = (mode >> 16) & 0xff;
int lzpMinLen = (mode >> 8) & 0xff;
int coder = (mode >> 5) & 0x7;
int blockSorter = (mode >> 0) & 0x1f;
int lzSize = LIBBSC_NO_ERROR;
{
unsigned char * buffer = (unsigned char *)bsc_malloc(blockSize);
if (buffer == NULL) return LIBBSC_NOT_ENOUGH_MEMORY;
memcpy(buffer, data, blockSize);
lzSize = bsc_coder_decompress(buffer + LIBBSC_HEADER_SIZE, data, coder, features);
bsc_free(buffer);
}
if (lzSize < LIBBSC_NO_ERROR)
{
return lzSize;
}
int result;
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : result = bsc_bwt_decode(data, lzSize, index, num_indexes, indexes, features); break;
default : return LIBBSC_DATA_CORRUPT;
}
if (result < LIBBSC_NO_ERROR)
{
return result;
}
if (mode != (mode & 0xff))
{
if (unsigned char * buffer = (unsigned char *)bsc_malloc(lzSize))
{
memcpy(buffer, data, lzSize);
result = bsc_lzp_decompress(buffer, data, lzSize, lzpHashSize, lzpMinLen, features);
bsc_free(buffer);
if (result < LIBBSC_NO_ERROR)
{
return result;
}
return result == dataSize ? (adler32_data == bsc_adler32(data, dataSize, features) ? LIBBSC_NO_ERROR : LIBBSC_DATA_CORRUPT) : LIBBSC_DATA_CORRUPT;
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
return lzSize == dataSize ? (adler32_data == bsc_adler32(data, dataSize, features) ? LIBBSC_NO_ERROR : LIBBSC_DATA_CORRUPT) : LIBBSC_DATA_CORRUPT;
}
int bsc_decompress(unsigned char * input, int inputSize, unsigned char * output, int outputSize, int features)
{
int indexes[256];
unsigned char num_indexes;
if (input == output)
{
return bsc_decompress_inplace(output, inputSize, outputSize, features);
}
int blockSize = 0, dataSize = 0;
int info = bsc_block_info(input, inputSize, &blockSize, &dataSize, features);
if (info != LIBBSC_NO_ERROR)
{
return info;
}
if (inputSize < blockSize || outputSize < dataSize)
{
return LIBBSC_UNEXPECTED_EOB;
}
int coded = *(int *)(input + 20);
int mode = *(int *)(input + 8);
if (mode == 0)
{
memcpy(output, input + LIBBSC_HEADER_SIZE, dataSize);
return LIBBSC_NO_ERROR;
}
int index = *(int *)(input + 12);
int features_stored = *(int *)(input + 16);
if (features_stored != features) return LIBBSC_DATA_CORRUPT;
num_indexes = input[blockSize - 1];
if (num_indexes > 0)
{
memcpy(indexes, input + blockSize - 1 - 4 * num_indexes, 4 * num_indexes);
}
int lzpHashSize = (mode >> 16) & 0xff;
int lzpMinLen = (mode >> 8) & 0xff;
int coder = (mode >> 5) & 0x7;
int blockSorter = (mode >> 0) & 0x1f;
int result, lzSize;
if (coded) {
lzSize = bsc_coder_decompress(input + LIBBSC_HEADER_SIZE, output, coder, features);
if (lzSize < LIBBSC_NO_ERROR)
{
return lzSize;
}
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : result = bsc_bwt_decode(output, lzSize, index, num_indexes, indexes, features); break;
default : return LIBBSC_DATA_CORRUPT;
}
if (result < LIBBSC_NO_ERROR)
{
return result;
}
} else {
memcpy(output, input + LIBBSC_HEADER_SIZE, blockSize - LIBBSC_HEADER_SIZE);
lzSize = blockSize - LIBBSC_HEADER_SIZE;
}
result = lzSize;
if (mode != (mode & 0xff))
{
memcpy(input, output, lzSize);
result = bsc_lzp_decompress(input, output, lzSize, lzpHashSize, lzpMinLen, features);
if (result < LIBBSC_NO_ERROR)
{
return result;
}
return result == dataSize ? LIBBSC_NO_ERROR : LIBBSC_DATA_CORRUPT;
}
return result == dataSize ? LIBBSC_NO_ERROR : LIBBSC_DATA_CORRUPT;
}
/*
* Compatibility to decompress older archive versions.
*/
int bsc_decompress_old(const unsigned char * input, int inputSize, unsigned char * output, int outputSize, int features)
{
int indexes[256];
unsigned char num_indexes;
if (input == output)
{
return bsc_decompress_inplace(output, inputSize, outputSize, features);
}
int blockSize = 0, dataSize = 0;
int info = bsc_block_info((unsigned char *)input, inputSize, &blockSize, &dataSize, features);
if (info != LIBBSC_NO_ERROR)
{
return info;
}
if (inputSize < blockSize || outputSize < dataSize)
{
return LIBBSC_UNEXPECTED_EOB;
}
if (*(unsigned int *)(input + 20) != bsc_adler32(input + LIBBSC_HEADER_SIZE, blockSize - LIBBSC_HEADER_SIZE, features))
{
return LIBBSC_DATA_CORRUPT;
}
int mode = *(int *)(input + 8);
if (mode == 0)
{
memcpy(output, input + LIBBSC_HEADER_SIZE, dataSize);
return LIBBSC_NO_ERROR;
}
int index = *(int *)(input + 12);
unsigned int adler32_data = *(int *)(input + 16);
num_indexes = input[blockSize - 1];
if (num_indexes > 0)
{
memcpy(indexes, input + blockSize - 1 - 4 * num_indexes, 4 * num_indexes);
}
int lzpHashSize = (mode >> 16) & 0xff;
int lzpMinLen = (mode >> 8) & 0xff;
int coder = (mode >> 5) & 0x7;
int blockSorter = (mode >> 0) & 0x1f;
int lzSize = bsc_coder_decompress(input + LIBBSC_HEADER_SIZE, output, coder, features);
if (lzSize < LIBBSC_NO_ERROR)
{
return lzSize;
}
int result;
switch (blockSorter)
{
case LIBBSC_BLOCKSORTER_BWT : result = bsc_bwt_decode(output, lzSize, index, num_indexes, indexes, features); break;
default : return LIBBSC_DATA_CORRUPT;
}
if (result < LIBBSC_NO_ERROR)
{
return result;
}
if (mode != (mode & 0xff))
{
if (unsigned char * buffer = (unsigned char *)bsc_malloc(lzSize))
{
memcpy(buffer, output, lzSize);
result = bsc_lzp_decompress(buffer, output, lzSize, lzpHashSize, lzpMinLen, features);
bsc_free(buffer);
if (result < LIBBSC_NO_ERROR)
{
return result;
}
return result == dataSize ? (adler32_data == bsc_adler32(output, dataSize, features) ? LIBBSC_NO_ERROR : LIBBSC_DATA_CORRUPT) : LIBBSC_DATA_CORRUPT;
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
return lzSize == dataSize ? (adler32_data == bsc_adler32(output, dataSize, features) ? LIBBSC_NO_ERROR : LIBBSC_DATA_CORRUPT) : LIBBSC_DATA_CORRUPT;
}
/*-------------------------------------------------*/
/* End libbsc.cpp */
/*-------------------------------------------------*/

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/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Lempel Ziv Prediction */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <memory.h>
#include <string.h>
#include "lzp.h"
#include "../platform/platform.h"
#include "../libbsc.h"
#define LIBBSC_LZP_MATCH_FLAG 0xf2
static INLINE int bsc_lzp_num_blocks(int n)
{
if (n < 256 * 1024) return 1;
if (n < 4 * 1024 * 1024) return 2;
if (n < 16 * 1024 * 1024) return 4;
return 8;
}
int bsc_lzp_encode_block(const unsigned char * input, const unsigned char * inputEnd, unsigned char * output, unsigned char * outputEnd, int hashSize, int minLen)
{
if (inputEnd - input < 16)
{
return LIBBSC_NOT_COMPRESSIBLE;
}
if (int * lookup = (int *)bsc_zero_malloc((int)(1 << hashSize) * sizeof(int)))
{
unsigned int mask = (int)(1 << hashSize) - 1;
const unsigned char * inputStart = input;
const unsigned char * outputStart = output;
const unsigned char * outputEOB = outputEnd - 4;
unsigned int context = 0;
for (int i = 0; i < 4; ++i)
{
context = (context << 8) | (*output++ = *input++);
}
const unsigned char * heuristic = input;
const unsigned char * inputMinLenEnd = inputEnd - minLen - 8;
while ((input < inputMinLenEnd) && (output < outputEOB))
{
unsigned int index = ((context >> 15) ^ context ^ (context >> 3)) & mask;
int value = lookup[index]; lookup[index] = (int)(input - inputStart);
if (value > 0)
{
const unsigned char * reference = inputStart + value;
if ((*(unsigned int *)(input + minLen - 4) == *(unsigned int *)(reference + minLen - 4)) && (*(unsigned int *)(input) == *(unsigned int *)(reference)))
{
if ((heuristic > input) && (*(unsigned int *)heuristic != *(unsigned int *)(reference + (heuristic - input))))
{
goto LIBBSC_LZP_MATCH_NOT_FOUND;
}
int len = 4;
for (; input + len < inputMinLenEnd; len += 4)
{
if (*(unsigned int *)(input + len) != *(unsigned int *)(reference + len)) break;
}
if (len < minLen)
{
if (heuristic < input + len) heuristic = input + len;
goto LIBBSC_LZP_MATCH_NOT_FOUND;
}
if (input[len] == reference[len]) len++;
if (input[len] == reference[len]) len++;
if (input[len] == reference[len]) len++;
input += len; context = input[-1] | (input[-2] << 8) | (input[-3] << 16) | (input[-4] << 24);
*output++ = LIBBSC_LZP_MATCH_FLAG;
len -= minLen; while (len >= 254) { len -= 254; *output++ = 254; if (output >= outputEOB) break; }
*output++ = (unsigned char)(len);
}
else
{
LIBBSC_LZP_MATCH_NOT_FOUND:
unsigned char next = *output++ = *input++; context = (context << 8) | next;
if (next == LIBBSC_LZP_MATCH_FLAG) *output++ = 255;
}
}
else
{
context = (context << 8) | (*output++ = *input++);
}
}
while ((input < inputEnd) && (output < outputEOB))
{
unsigned int index = ((context >> 15) ^ context ^ (context >> 3)) & mask;
int value = lookup[index]; lookup[index] = (int)(input - inputStart);
if (value > 0)
{
unsigned char next = *output++ = *input++; context = (context << 8) | next;
if (next == LIBBSC_LZP_MATCH_FLAG) *output++ = 255;
}
else
{
context = (context << 8) | (*output++ = *input++);
}
}
bsc_free(lookup);
return (output >= outputEOB) ? LIBBSC_NOT_COMPRESSIBLE : (int)(output - outputStart);
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
int bsc_lzp_decode_block(const unsigned char * input, const unsigned char * inputEnd, unsigned char * output, int hashSize, int minLen)
{
if (inputEnd - input < 4)
{
return LIBBSC_UNEXPECTED_EOB;
}
if (int * lookup = (int *)bsc_zero_malloc((int)(1 << hashSize) * sizeof(int)))
{
unsigned int mask = (int)(1 << hashSize) - 1;
const unsigned char * outputStart = output;
unsigned int context = 0;
for (int i = 0; i < 4; ++i)
{
context = (context << 8) | (*output++ = *input++);
}
while (input < inputEnd)
{
unsigned int index = ((context >> 15) ^ context ^ (context >> 3)) & mask;
int value = lookup[index]; lookup[index] = (int)(output - outputStart);
if (*input == LIBBSC_LZP_MATCH_FLAG && value > 0)
{
input++;
if (*input != 255)
{
int len = minLen; while (true) { len += *input; if (*input++ != 254) break; }
const unsigned char * reference = outputStart + value;
unsigned char * outputEnd = output + len;
if (output - reference < 4)
{
int offset[4] = {0, 3, 2, 3};
*output++ = *reference++;
*output++ = *reference++;
*output++ = *reference++;
*output++ = *reference++;
reference -= offset[output - reference];
}
while (output < outputEnd) { *(unsigned int *)output = *(unsigned int*)reference; output += 4; reference += 4; }
output = outputEnd; context = output[-1] | (output[-2] << 8) | (output[-3] << 16) | (output[-4] << 24);
}
else
{
input++; context = (context << 8) | (*output++ = LIBBSC_LZP_MATCH_FLAG);
}
}
else
{
context = (context << 8) | (*output++ = *input++);
}
}
bsc_free(lookup);
return (int)(output - outputStart);
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
int bsc_lzp_compress_serial(const unsigned char * input, unsigned char * output, int n, int hashSize, int minLen)
{
if (bsc_lzp_num_blocks(n) == 1)
{
int result = bsc_lzp_encode_block(input, input + n, output + 1, output + n - 1, hashSize, minLen);
if (result >= LIBBSC_NO_ERROR) result = (output[0] = 1, result + 1);
return result;
}
int nBlocks = bsc_lzp_num_blocks(n);
int chunkSize = n / nBlocks;
int outputPtr = 1 + 8 * nBlocks;
output[0] = nBlocks;
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int inputStart = blockId * chunkSize;
int inputSize = blockId != nBlocks - 1 ? chunkSize : n - inputStart;
int outputSize = inputSize; if (outputSize > n - outputPtr) outputSize = n - outputPtr;
int result = bsc_lzp_encode_block(input + inputStart, input + inputStart + inputSize, output + outputPtr, output + outputPtr + outputSize, hashSize, minLen);
if (result < LIBBSC_NO_ERROR)
{
if (outputPtr + inputSize >= n) return LIBBSC_NOT_COMPRESSIBLE;
result = inputSize; memcpy(output + outputPtr, input + inputStart, inputSize);
}
*(int *)(output + 1 + 8 * blockId + 0) = inputSize;
*(int *)(output + 1 + 8 * blockId + 4) = result;
outputPtr += result;
}
return outputPtr;
}
#ifdef LIBBSC_OPENMP
int bsc_lzp_compress_parallel(const unsigned char * input, unsigned char * output, int n, int hashSize, int minLen)
{
if (unsigned char * buffer = (unsigned char *)bsc_malloc(n * sizeof(unsigned char)))
{
int compressionResult[ALPHABET_SIZE];
int nBlocks = bsc_lzp_num_blocks(n);
int result = LIBBSC_NO_ERROR;
int chunkSize = n / nBlocks;
int numThreads = omp_get_max_threads();
if (numThreads > nBlocks) numThreads = nBlocks;
output[0] = nBlocks;
#pragma omp parallel num_threads(numThreads) if(numThreads > 1)
{
if (omp_get_num_threads() == 1)
{
result = bsc_lzp_compress_serial(input, output, n, hashSize, minLen);
}
else
{
#pragma omp for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int blockStart = blockId * chunkSize;
int blockSize = blockId != nBlocks - 1 ? chunkSize : n - blockStart;
compressionResult[blockId] = bsc_lzp_encode_block(input + blockStart, input + blockStart + blockSize, buffer + blockStart, buffer + blockStart + blockSize, hashSize, minLen);
if (compressionResult[blockId] < LIBBSC_NO_ERROR) compressionResult[blockId] = blockSize;
*(int *)(output + 1 + 8 * blockId + 0) = blockSize;
*(int *)(output + 1 + 8 * blockId + 4) = compressionResult[blockId];
}
#pragma omp single
{
result = 1 + 8 * nBlocks;
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
result += compressionResult[blockId];
}
if (result >= n) result = LIBBSC_NOT_COMPRESSIBLE;
}
if (result >= LIBBSC_NO_ERROR)
{
#pragma omp for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int blockStart = blockId * chunkSize;
int blockSize = blockId != nBlocks - 1 ? chunkSize : n - blockStart;
int outputPtr = 1 + 8 * nBlocks;
for (int p = 0; p < blockId; ++p) outputPtr += compressionResult[p];
if (compressionResult[blockId] != blockSize)
{
memcpy(output + outputPtr, buffer + blockStart, compressionResult[blockId]);
}
else
{
memcpy(output + outputPtr, input + blockStart, compressionResult[blockId]);
}
}
}
}
}
bsc_free(buffer);
return result;
}
return LIBBSC_NOT_ENOUGH_MEMORY;
}
#endif
int bsc_lzp_compress(const unsigned char * input, unsigned char * output, int n, int hashSize, int minLen, int features)
{
#ifdef LIBBSC_OPENMP
if ((bsc_lzp_num_blocks(n) != 1) && (features & LIBBSC_FEATURE_MULTITHREADING))
{
return bsc_lzp_compress_parallel(input, output, n, hashSize, minLen);
}
#endif
return bsc_lzp_compress_serial(input, output, n, hashSize, minLen);
}
int bsc_lzp_decompress(const unsigned char * input, unsigned char * output, int n, int hashSize, int minLen, int features)
{
int nBlocks = input[0];
if (nBlocks == 1)
{
return bsc_lzp_decode_block(input + 1, input + n, output, hashSize, minLen);
}
int decompressionResult[ALPHABET_SIZE];
#ifdef LIBBSC_OPENMP
if (features & LIBBSC_FEATURE_MULTITHREADING)
{
#pragma omp parallel for schedule(dynamic)
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int inputPtr = 0; for (int p = 0; p < blockId; ++p) inputPtr += *(int *)(input + 1 + 8 * p + 4);
int outputPtr = 0; for (int p = 0; p < blockId; ++p) outputPtr += *(int *)(input + 1 + 8 * p + 0);
inputPtr += 1 + 8 * nBlocks;
int inputSize = *(int *)(input + 1 + 8 * blockId + 4);
int outputSize = *(int *)(input + 1 + 8 * blockId + 0);
if (inputSize != outputSize)
{
decompressionResult[blockId] = bsc_lzp_decode_block(input + inputPtr, input + inputPtr + inputSize, output + outputPtr, hashSize, minLen);
}
else
{
decompressionResult[blockId] = inputSize; memcpy(output + outputPtr, input + inputPtr, inputSize);
}
}
}
else
#endif
{
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
int inputPtr = 0; for (int p = 0; p < blockId; ++p) inputPtr += *(int *)(input + 1 + 8 * p + 4);
int outputPtr = 0; for (int p = 0; p < blockId; ++p) outputPtr += *(int *)(input + 1 + 8 * p + 0);
inputPtr += 1 + 8 * nBlocks;
int inputSize = *(int *)(input + 1 + 8 * blockId + 4);
int outputSize = *(int *)(input + 1 + 8 * blockId + 0);
if (inputSize != outputSize)
{
decompressionResult[blockId] = bsc_lzp_decode_block(input + inputPtr, input + inputPtr + inputSize, output + outputPtr, hashSize, minLen);
}
else
{
decompressionResult[blockId] = inputSize; memcpy(output + outputPtr, input + inputPtr, inputSize);
}
}
}
int dataSize = 0, result = LIBBSC_NO_ERROR;
for (int blockId = 0; blockId < nBlocks; ++blockId)
{
if (decompressionResult[blockId] < LIBBSC_NO_ERROR) result = decompressionResult[blockId];
dataSize += decompressionResult[blockId];
}
return (result == LIBBSC_NO_ERROR) ? dataSize : result;
}
/*-----------------------------------------------------------*/
/* End lzp.cpp */
/*-----------------------------------------------------------*/

74
bsc/libbsc/lzp/lzp.h Normal file
View file

@ -0,0 +1,74 @@
/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to Lempel Ziv Prediction functions */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_LZP_H
#define _LIBBSC_LZP_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* Preprocess a memory block by LZP algorithm.
* @param input - the input memory block of n bytes.
* @param output - the output memory block of n bytes.
* @param n - the length of the input/output memory blocks.
* @param hashSize - the hash table size.
* @param minLen - the minimum match length.
* @param features - the set of additional features.
* @return The length of preprocessed memory block if no error occurred, error code otherwise.
*/
int bsc_lzp_compress(const unsigned char * input, unsigned char * output, int n, int hashSize, int minLen, int features);
/**
* Reconstructs the original memory block after LZP algorithm.
* @param input - the input memory block of n bytes.
* @param output - the output memory block.
* @param n - the length of the input memory block.
* @param hashSize - the hash table size.
* @param minLen - the minimum match length.
* @param features - the set of additional features.
* @return The length of original memory block if no error occurred, error code otherwise.
*/
int bsc_lzp_decompress(const unsigned char * input, unsigned char * output, int n, int hashSize, int minLen, int features);
#ifdef __cplusplus
}
#endif
#endif
/*-----------------------------------------------------------*/
/* End lzp.h */
/*-----------------------------------------------------------*/

135
bsc/libbsc/platform/platform.cpp Normal file
View file

@ -0,0 +1,135 @@
/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Platform specific functions and constants */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include "platform.h"
#include "../libbsc.h"
#if defined(_WIN32)
#include <windows.h>
SIZE_T g_LargePageSize = 0;
#endif
int bsc_platform_init(int features)
{
#if defined(_WIN32)
if (features & LIBBSC_FEATURE_LARGEPAGES)
{
HANDLE hToken = 0;
if (OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES, &hToken))
{
LUID luid;
if (LookupPrivilegeValue(NULL, TEXT("SeLockMemoryPrivilege"), &luid))
{
TOKEN_PRIVILEGES tp;
tp.PrivilegeCount = 1;
tp.Privileges[0].Luid = luid;
tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(tp), 0, 0);
}
CloseHandle(hToken);
}
{
if (HMODULE hKernel = GetModuleHandle(TEXT("kernel32.dll")))
{
typedef SIZE_T (WINAPI * GetLargePageMinimumProcT)();
GetLargePageMinimumProcT largePageMinimumProc = (GetLargePageMinimumProcT)GetProcAddress(hKernel, "GetLargePageMinimum");
if (largePageMinimumProc != NULL)
{
SIZE_T largePageSize = largePageMinimumProc();
if ((largePageSize & (largePageSize - 1)) != 0) largePageSize = 0;
g_LargePageSize = largePageSize;
}
}
}
}
#endif
return LIBBSC_NO_ERROR;
}
void * bsc_malloc(size_t size)
{
#if defined(_WIN32)
if ((g_LargePageSize != 0) && (size >= 256 * 1024))
{
void * address = VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSize - 1)), MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
if (address != NULL) return address;
}
return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
#else
return malloc(size);
#endif
}
void * bsc_zero_malloc(size_t size)
{
#if defined(_WIN32)
if ((g_LargePageSize != 0) && (size >= 256 * 1024))
{
void * address = VirtualAlloc(0, (size + g_LargePageSize - 1) & (~(g_LargePageSize - 1)), MEM_COMMIT | MEM_LARGE_PAGES, PAGE_READWRITE);
if (address != NULL) return address;
}
return VirtualAlloc(0, size, MEM_COMMIT, PAGE_READWRITE);
#else
return calloc(1, size);
#endif
}
void bsc_free(void * address)
{
#if defined(_WIN32)
VirtualFree(address, 0, MEM_RELEASE);
#else
free(address);
#endif
}
/*-----------------------------------------------------------*/
/* End platform.cpp */
/*-----------------------------------------------------------*/

108
bsc/libbsc/platform/platform.h Normal file
View file

@ -0,0 +1,108 @@
/*-----------------------------------------------------------*/
/* Block Sorting, Lossless Data Compression Library. */
/* Interface to platform specific functions and constants */
/*-----------------------------------------------------------*/
/*--
This file is a part of bsc and/or libbsc, a program and a library for
lossless, block-sorting data compression.
Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
See file AUTHORS for a full list of contributors.
The bsc and libbsc 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 3 of the License, or (at your
option) any later version.
The bsc and libbsc 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 the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
Please see the files COPYING and COPYING.LIB for full copyright information.
See also the bsc and libbsc web site:
http://libbsc.com/ for more information.
--*/
#ifndef _LIBBSC_PLATFORM_H
#define _LIBBSC_PLATFORM_H
#if defined(_OPENMP) && defined(LIBBSC_OPENMP_SUPPORT)
#include <omp.h>
#define LIBBSC_OPENMP
#endif
#if defined(__GNUC__)
#define INLINE __inline__
#elif defined(_MSC_VER)
#define INLINE __forceinline
#elif defined(__IBMC__)
#define INLINE _Inline
#elif defined(__cplusplus)
#define INLINE inline
#else
#define INLINE /* */
#endif
#if defined(__GNUC__) && (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
#define RESTRICT __restrict__
#elif defined(__INTEL_COMPILER) && (__INTEL_COMPILER >= 600)
#define RESTRICT __restrict
#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
#define RESTRICT __restrict
#elif defined(__CUDACC__) && (CUDA_VERSION >= 3000)
#define RESTRICT __restrict__
#else
#define RESTRICT /* */
#endif
#define ALPHABET_SIZE (256)
#ifdef __cplusplus
extern "C" {
#endif
/**
* You should call this function before you call any of the other platform specific functions.
* @param features - the set of additional features.
* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
*/
int bsc_platform_init(int features);
/**
* Allocates memory blocks.
* @param size - bytes to allocate.
* @return a pointer to allocated space or NULL if there is insufficient memory available.
*/
void * bsc_malloc(size_t size);
/**
* Allocates memory blocks and initializes all its bits to zero.
* @param size - bytes to allocate.
* @return a pointer to allocated space or NULL if there is insufficient memory available.
*/
void * bsc_zero_malloc(size_t size);
/**
* Deallocates or frees a memory block.
* @param address - previously allocated memory block to be freed.
*/
void bsc_free(void * address);
#ifdef __cplusplus
}
#endif
#endif
/*-----------------------------------------------------------*/
/* End platform.h */
/*-----------------------------------------------------------*/

111
bsc/makefile Normal file
View file

@ -0,0 +1,111 @@
SHELL = /bin/sh
CC = g++
AR = ar
RANLIB = ranlib
CFLAGS = -g -Wall -fPIC
# Sort Transform is patented by Michael Schindler under US patent 6,199,064.
# However for research purposes this algorithm is included in this software.
# So if you are of the type who should worry about this (making money) worry away.
# The author shall have no liability with respect to the infringement of
# copyrights, trade secrets or any patents by this software. In no event will
# the author be liable for any lost revenue or profits or other special,
# indirect and consequential damages.
# Sort Transform is disabled by default and can be enabled by defining the
# preprocessor macro LIBBSC_SORT_TRANSFORM_SUPPORT at compile time.
#CFLAGS += -DLIBBSC_SORT_TRANSFORM_SUPPORT
# Comment out CFLAGS line below for compatability mode for 32bit file sizes
# (less than 2GB) and systems that have compilers that treat int as 64bit
# natively (ie: modern AIX)
CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
# Comment out CFLAGS line below to disable optimizations
CFLAGS += -O3 -fomit-frame-pointer -fstrict-aliasing
# Comment out CFLAGS line below to disable OpenMP optimizations
CFLAGS += -fopenmp -DLIBBSC_OPENMP_SUPPORT
# Comment out CFLAGS line below to enable debug output
CFLAGS += -DNDEBUG
# Where you want bsc installed when you do 'make install'
PREFIX = /usr
OBJS = \
adler32.o \
divsufsort.o \
bwt.o \
coder.o \
qlfc.o \
qlfc_model.o \
detectors.o \
preprocessing.o \
libbsc.o \
lzp.o \
platform.o \
all: libbsc.a bsc
bsc: libbsc.a bsc.cpp
$(CC) $(CFLAGS) bsc.cpp -o bsc -L. -lbsc
libbsc.a: $(OBJS)
rm -f libbsc.a
$(AR) cq libbsc.a $(OBJS)
@if ( test -f $(RANLIB) -o -f /usr/bin/ranlib -o \
-f /bin/ranlib -o -f /usr/ccs/bin/ranlib ) ; then \
echo $(RANLIB) libbsc.a ; \
$(RANLIB) libbsc.a ; \
fi
install: libbsc.a bsc
if ( test ! -d $(PREFIX)/bin ) ; then mkdir -p $(PREFIX)/bin ; fi
if ( test ! -d $(PREFIX)/lib ) ; then mkdir -p $(PREFIX)/lib ; fi
if ( test ! -d $(PREFIX)/include ) ; then mkdir -p $(PREFIX)/include ; fi
cp -f bsc $(PREFIX)/bin/bsc
chmod a+x $(PREFIX)/bin/bsc
cp -f libbsc/libbsc.h $(PREFIX)/include
chmod a+r $(PREFIX)/include/libbsc.h
cp -f libbsc.a $(PREFIX)/lib
chmod a+r $(PREFIX)/lib/libbsc.a
clean:
rm -f *.o libbsc.a bsc
adler32.o: libbsc/adler32/adler32.cpp
$(CC) $(CFLAGS) -c libbsc/adler32/adler32.cpp
divsufsort.o: libbsc/bwt/divsufsort/divsufsort.c
$(CC) $(CFLAGS) -c libbsc/bwt/divsufsort/divsufsort.c
bwt.o: libbsc/bwt/bwt.cpp
$(CC) $(CFLAGS) -c libbsc/bwt/bwt.cpp
coder.o: libbsc/coder/coder.cpp
$(CC) $(CFLAGS) -c libbsc/coder/coder.cpp
qlfc.o: libbsc/coder/qlfc/qlfc.cpp
$(CC) $(CFLAGS) -c libbsc/coder/qlfc/qlfc.cpp
qlfc_model.o: libbsc/coder/qlfc/qlfc_model.cpp
$(CC) $(CFLAGS) -c libbsc/coder/qlfc/qlfc_model.cpp
detectors.o: libbsc/filters/detectors.cpp
$(CC) $(CFLAGS) -c libbsc/filters/detectors.cpp
preprocessing.o: libbsc/filters/preprocessing.cpp
$(CC) $(CFLAGS) -c libbsc/filters/preprocessing.cpp
libbsc.o: libbsc/libbsc/libbsc.cpp
$(CC) $(CFLAGS) -c libbsc/libbsc/libbsc.cpp
lzp.o: libbsc/lzp/lzp.cpp
$(CC) $(CFLAGS) -c libbsc/lzp/lzp.cpp
platform.o: libbsc/platform/platform.cpp
$(CC) $(CFLAGS) -c libbsc/platform/platform.cpp

21
config
View file

@ -31,9 +31,9 @@ ${prog} [<options>]
--enable-debug Enable debug mode compilation (default: disabled).
--disable-allocator Disable use of internal memory allocator mechanism (default: enabled).
--enable-debug-stats Enable printing of some verbose debug info (default: disabled).
--with-libbsc=<path to libbsc source>
Enable support for libbsc (See: libbsc.com). Full path to the libbsc
source tree must be provided. It links the library statically.
--with-libbsc=<path to libbsc source> (Default: Internal copy)
Full path to external libbsc source tree can be provided. It links the
library statically.
--with-openssl=<path to OpenSSL installation tree> (Default: System)
This defaults to the system's OpenSSL library. You can use this option
if you want to use an alternate OpenSSL installation.
@ -60,12 +60,12 @@ debug=0
allocator=1
debug_stats=0
prefix=/usr
libbsc_dir=
libbsc_lib=
libbsclflags=
libbscwrapobj=
libbscgenopt=
libbsccppflags=
libbsc_dir=./bsc
libbsc_lib=${libbsc_dir}/libbsc.a
libbsclflags='\$\(LIBBSCLFLAGS\)'
libbscwrapobj='\$\(LIBBSCWRAPOBJ\)'
libbscgenopt='\$\(LIBBSCGEN_OPT\)'
libbsccppflags='\$\(LIBBSCCPPFLAGS\)'
openssl_prefix=
openssl_libdir=
openssl_incdir=
@ -162,7 +162,8 @@ do
libbscgenopt='\$\(LIBBSCGEN_OPT\)'
libbsccppflags='\$\(LIBBSCCPPFLAGS\)'
else
echo "Libbsc not found in ${path}, not enabling libbsc support.\n"
echo "Libbsc not found in ${path}.\n"
exit 1
fi
;;
--with-openssl=*)

15
libbsc_compress.c
View file

@ -40,6 +40,7 @@ struct libbsc_params {
int lzpMinLen;
int bscCoder;
int features;
int oldversion;
};
static void
@ -68,6 +69,13 @@ libbsc_stats(int show)
{
}
int
libbsc_buf_extra(uint64_t buflen)
{
return (4096);
}
/*
* BSC uses OpenMP where it does not control thread count
* deterministically. We only use multithread capability in BSC
@ -124,6 +132,10 @@ libbsc_init(void **data, int *level, int nthreads, uint64_t chunksize,
bscdat->lzpMinLen = 200;
bscdat->bscCoder = LIBBSC_CODER_QLFC_ADAPTIVE;
}
if (file_version < 9) {
bscdat->oldversion = 1;
}
*data = bscdat;
rv = bsc_init(bscdat->features);
if (rv != LIBBSC_NO_ERROR) {
@ -176,6 +188,9 @@ libbsc_decompress(void *src, uint64_t srclen, void *dst, uint64_t *dstlen,
int rv;
struct libbsc_params *bscdat = (struct libbsc_params *)data;
if (bscdat->oldversion)
rv = bsc_decompress_old(src, srclen, dst, *dstlen, bscdat->features);
else
rv = bsc_decompress(src, srclen, dst, *dstlen, bscdat->features);
if (rv != LIBBSC_NO_ERROR) {
libbsc_err(rv);

2
pcompress.h
View file

@ -40,7 +40,7 @@ extern "C" {
#define CHUNK_FLAG_SZ 1
#define ALGO_SZ 8
#define MIN_CHUNK 2048
#define VERSION 8
#define VERSION 9
#define FLAG_DEDUP 1
#define FLAG_DEDUP_FIXED 2
#define FLAG_SINGLE_CHUNK 4