forked from mirror/unalz
Use system bz2
This commit is contained in:
parent
e18b706bb9
commit
8fd5540542
9 changed files with 5 additions and 2463 deletions
23
Makefile
23
Makefile
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@ -1,6 +1,6 @@
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CPP = g++
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CC = gcc
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OBJ = main.o UnAlz.o UnAlzUtils.o UnAlzBz2decompress.o UnAlzBzip2.o UnAlzbzlib.o bzip2/blocksort.o bzip2/compress.o bzip2/crctable.o bzip2/huffman.o bzip2/randtable.o
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OBJ = main.o UnAlz.o UnAlzUtils.o UnAlzBz2decompress.o UnAlzBzip2.o UnAlzbzlib.o
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BIN = unalz
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LDFLAGS =
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CFLAGS = -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64
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@ -27,7 +27,7 @@ posix: unalz
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posix-utf8: unalz
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$(CPP) -c UnAlz.cpp -c UnAlzUtils.cpp -c main.cpp -D_UNALZ_ICONV -D_UNALZ_UTF8 $(CFLAGS)
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$(CPP) $(OBJ) $(LDFLAGS) -liconv -lz -o $(BIN)
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$(CPP) $(OBJ) $(LDFLAGS) -liconv -lz -lbz2 -o $(BIN)
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posix-noiconv: unalz
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$(CPP) -c UnAlz.cpp -c UnAlzUtils.cpp -c main.cpp $(CFLAGS)
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@ -35,7 +35,7 @@ posix-noiconv: unalz
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linux-utf8: unalz
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$(CPP) -c UnAlz.cpp -c UnAlzUtils.cpp -c main.cpp -D_UNALZ_ICONV -D_UNALZ_UTF8 $(CFLAGS)
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$(CPP) $(OBJ) $(LDFLAGS) -lz -o $(BIN)
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$(CPP) $(OBJ) $(LDFLAGS) -lz -lbz2 -o $(BIN)
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install:
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cp unalz /usr/local/bin/
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@ -44,20 +44,3 @@ clean:
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rm -f $(OBJ) $(BIN)
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$(BIN): $(OBJ)
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bzip2/blocksort.o: bzip2/blocksort.c
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$(CC) -c bzip2/blocksort.c -o bzip2/blocksort.o $(CFLAGS)
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bzip2/compress.o: bzip2/compress.c
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$(CC) -c bzip2/compress.c -o bzip2/compress.o $(CFLAGS)
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bzip2/crctable.o: bzip2/crctable.c
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$(CC) -c bzip2/crctable.c -o bzip2/crctable.o $(CFLAGS)
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bzip2/huffman.o: bzip2/huffman.c
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$(CC) -c bzip2/huffman.c -o bzip2/huffman.o $(CFLAGS)
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bzip2/randtable.o: bzip2/randtable.c
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$(CC) -c bzip2/randtable.c -o bzip2/randtable.o $(CFLAGS)
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@ -1,4 +1,4 @@
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#include "bzip2/bzlib.h"
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#include "bzlib.h"
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#include "UnAlz.h"
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#ifdef _WIN32
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@ -11,7 +11,7 @@
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//#include "stdafx.h"
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#include "zlib.h"
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#include "bzip2/bzlib.h"
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#include "bzlib.h"
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#include "bzip2/bzlib_private.h"
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#include "UnAlz.h"
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1094
bzip2/blocksort.c
1094
bzip2/blocksort.c
File diff suppressed because it is too large
Load diff
282
bzip2/bzlib.h
282
bzip2/bzlib.h
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@ -1,282 +0,0 @@
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/*-------------------------------------------------------------*/
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/*--- Public header file for the library. ---*/
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/*--- bzlib.h ---*/
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/*-------------------------------------------------------------*/
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/* ------------------------------------------------------------------
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This file is part of bzip2/libbzip2, a program and library for
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lossless, block-sorting data compression.
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bzip2/libbzip2 version 1.0.5 of 10 December 2007
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Copyright (C) 1996-2007 Julian Seward <jseward@bzip.org>
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Please read the WARNING, DISCLAIMER and PATENTS sections in the
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README file.
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This program is released under the terms of the license contained
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in the file LICENSE.
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------------------------------------------------------------------ */
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#ifndef _BZLIB_H
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#define _BZLIB_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define BZ_RUN 0
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#define BZ_FLUSH 1
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#define BZ_FINISH 2
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#define BZ_OK 0
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#define BZ_RUN_OK 1
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#define BZ_FLUSH_OK 2
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#define BZ_FINISH_OK 3
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#define BZ_STREAM_END 4
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#define BZ_SEQUENCE_ERROR (-1)
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#define BZ_PARAM_ERROR (-2)
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#define BZ_MEM_ERROR (-3)
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#define BZ_DATA_ERROR (-4)
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#define BZ_DATA_ERROR_MAGIC (-5)
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#define BZ_IO_ERROR (-6)
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#define BZ_UNEXPECTED_EOF (-7)
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#define BZ_OUTBUFF_FULL (-8)
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#define BZ_CONFIG_ERROR (-9)
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typedef
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struct {
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char *next_in;
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unsigned int avail_in;
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unsigned int total_in_lo32;
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unsigned int total_in_hi32;
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char *next_out;
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unsigned int avail_out;
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unsigned int total_out_lo32;
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unsigned int total_out_hi32;
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void *state;
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void *(*bzalloc)(void *,int,int);
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void (*bzfree)(void *,void *);
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void *opaque;
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}
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bz_stream;
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#ifndef BZ_IMPORT
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#define BZ_EXPORT
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#endif
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#ifndef BZ_NO_STDIO
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/* Need a definitition for FILE */
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#include <stdio.h>
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#endif
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#ifdef _WIN32
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# include <windows.h>
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# ifdef small
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/* windows.h define small to char */
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# undef small
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# endif
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# ifdef BZ_EXPORT
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# define BZ_API(func) WINAPI func
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# define BZ_EXTERN extern
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# else
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/* import windows dll dynamically */
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# define BZ_API(func) (WINAPI * func)
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# define BZ_EXTERN
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# endif
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#else
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# define BZ_API(func) func
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# define BZ_EXTERN extern
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#endif
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/*-- Core (low-level) library functions --*/
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BZ_EXTERN int BZ_API(BZ2_bzCompressInit) (
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bz_stream* strm,
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int blockSize100k,
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int verbosity,
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int workFactor
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);
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BZ_EXTERN int BZ_API(BZ2_bzCompress) (
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bz_stream* strm,
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int action
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);
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BZ_EXTERN int BZ_API(BZ2_bzCompressEnd) (
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bz_stream* strm
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);
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BZ_EXTERN int BZ_API(BZ2_bzDecompressInit) (
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bz_stream *strm,
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int verbosity,
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int small
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);
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BZ_EXTERN int BZ_API(BZ2_bzDecompress) (
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bz_stream* strm
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);
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BZ_EXTERN int BZ_API(BZ2_bzDecompressEnd) (
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bz_stream *strm
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);
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/*-- High(er) level library functions --*/
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#ifndef BZ_NO_STDIO
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#define BZ_MAX_UNUSED 5000
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typedef void BZFILE;
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BZ_EXTERN BZFILE* BZ_API(BZ2_bzReadOpen) (
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int* bzerror,
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FILE* f,
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int verbosity,
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int small,
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void* unused,
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int nUnused
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);
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BZ_EXTERN void BZ_API(BZ2_bzReadClose) (
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int* bzerror,
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BZFILE* b
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);
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BZ_EXTERN void BZ_API(BZ2_bzReadGetUnused) (
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int* bzerror,
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BZFILE* b,
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void** unused,
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int* nUnused
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);
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BZ_EXTERN int BZ_API(BZ2_bzRead) (
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int* bzerror,
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BZFILE* b,
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void* buf,
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int len
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);
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BZ_EXTERN BZFILE* BZ_API(BZ2_bzWriteOpen) (
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int* bzerror,
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FILE* f,
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int blockSize100k,
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int verbosity,
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int workFactor
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);
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BZ_EXTERN void BZ_API(BZ2_bzWrite) (
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int* bzerror,
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BZFILE* b,
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void* buf,
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int len
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);
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BZ_EXTERN void BZ_API(BZ2_bzWriteClose) (
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int* bzerror,
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BZFILE* b,
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int abandon,
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unsigned int* nbytes_in,
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unsigned int* nbytes_out
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);
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BZ_EXTERN void BZ_API(BZ2_bzWriteClose64) (
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int* bzerror,
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BZFILE* b,
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int abandon,
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unsigned int* nbytes_in_lo32,
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unsigned int* nbytes_in_hi32,
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unsigned int* nbytes_out_lo32,
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unsigned int* nbytes_out_hi32
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);
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#endif
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/*-- Utility functions --*/
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BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffCompress) (
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char* dest,
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unsigned int* destLen,
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char* source,
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unsigned int sourceLen,
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int blockSize100k,
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int verbosity,
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int workFactor
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);
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BZ_EXTERN int BZ_API(BZ2_bzBuffToBuffDecompress) (
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char* dest,
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unsigned int* destLen,
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char* source,
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unsigned int sourceLen,
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int small,
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int verbosity
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);
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/*--
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Code contributed by Yoshioka Tsuneo (tsuneo@rr.iij4u.or.jp)
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to support better zlib compatibility.
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This code is not _officially_ part of libbzip2 (yet);
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I haven't tested it, documented it, or considered the
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threading-safeness of it.
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If this code breaks, please contact both Yoshioka and me.
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--*/
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BZ_EXTERN const char * BZ_API(BZ2_bzlibVersion) (
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void
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);
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#ifndef BZ_NO_STDIO
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BZ_EXTERN BZFILE * BZ_API(BZ2_bzopen) (
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const char *path,
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const char *mode
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);
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BZ_EXTERN BZFILE * BZ_API(BZ2_bzdopen) (
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int fd,
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const char *mode
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);
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BZ_EXTERN int BZ_API(BZ2_bzread) (
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BZFILE* b,
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void* buf,
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int len
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);
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BZ_EXTERN int BZ_API(BZ2_bzwrite) (
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BZFILE* b,
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void* buf,
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int len
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);
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BZ_EXTERN int BZ_API(BZ2_bzflush) (
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BZFILE* b
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);
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BZ_EXTERN void BZ_API(BZ2_bzclose) (
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BZFILE* b
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);
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BZ_EXTERN const char * BZ_API(BZ2_bzerror) (
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BZFILE *b,
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int *errnum
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);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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/*-------------------------------------------------------------*/
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/*--- end bzlib.h ---*/
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/*-------------------------------------------------------------*/
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672
bzip2/compress.c
672
bzip2/compress.c
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@ -1,672 +0,0 @@
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/*-------------------------------------------------------------*/
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/*--- Compression machinery (not incl block sorting) ---*/
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/*--- compress.c ---*/
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/*-------------------------------------------------------------*/
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/* ------------------------------------------------------------------
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This file is part of bzip2/libbzip2, a program and library for
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lossless, block-sorting data compression.
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bzip2/libbzip2 version 1.0.5 of 10 December 2007
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Copyright (C) 1996-2007 Julian Seward <jseward@bzip.org>
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|
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Please read the WARNING, DISCLAIMER and PATENTS sections in the
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README file.
|
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|
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This program is released under the terms of the license contained
|
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in the file LICENSE.
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------------------------------------------------------------------ */
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/* CHANGES
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0.9.0 -- original version.
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0.9.0a/b -- no changes in this file.
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0.9.0c -- changed setting of nGroups in sendMTFValues()
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so as to do a bit better on small files
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*/
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#include "bzlib_private.h"
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/*---------------------------------------------------*/
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/*--- Bit stream I/O ---*/
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/*---------------------------------------------------*/
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/*---------------------------------------------------*/
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void BZ2_bsInitWrite ( EState* s )
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{
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s->bsLive = 0;
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s->bsBuff = 0;
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}
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/*---------------------------------------------------*/
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static
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void bsFinishWrite ( EState* s )
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{
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while (s->bsLive > 0) {
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s->zbits[s->numZ] = (UChar)(s->bsBuff >> 24);
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s->numZ++;
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s->bsBuff <<= 8;
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s->bsLive -= 8;
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}
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}
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/*---------------------------------------------------*/
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#define bsNEEDW(nz) \
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{ \
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while (s->bsLive >= 8) { \
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s->zbits[s->numZ] \
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= (UChar)(s->bsBuff >> 24); \
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s->numZ++; \
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s->bsBuff <<= 8; \
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s->bsLive -= 8; \
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} \
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}
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/*---------------------------------------------------*/
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static
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__inline__
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void bsW ( EState* s, Int32 n, UInt32 v )
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{
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bsNEEDW ( n );
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s->bsBuff |= (v << (32 - s->bsLive - n));
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s->bsLive += n;
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}
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/*---------------------------------------------------*/
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static
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void bsPutUInt32 ( EState* s, UInt32 u )
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{
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bsW ( s, 8, (u >> 24) & 0xffL );
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bsW ( s, 8, (u >> 16) & 0xffL );
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bsW ( s, 8, (u >> 8) & 0xffL );
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bsW ( s, 8, u & 0xffL );
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}
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|
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|
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/*---------------------------------------------------*/
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static
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void bsPutUChar ( EState* s, UChar c )
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{
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bsW( s, 8, (UInt32)c );
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}
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|
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|
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/*---------------------------------------------------*/
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/*--- The back end proper ---*/
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/*---------------------------------------------------*/
|
||||
|
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/*---------------------------------------------------*/
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static
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void makeMaps_e ( EState* s )
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{
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Int32 i;
|
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s->nInUse = 0;
|
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for (i = 0; i < 256; i++)
|
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if (s->inUse[i]) {
|
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s->unseqToSeq[i] = s->nInUse;
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s->nInUse++;
|
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}
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}
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||||
|
||||
|
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/*---------------------------------------------------*/
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static
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void generateMTFValues ( EState* s )
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{
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UChar yy[256];
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Int32 i, j;
|
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Int32 zPend;
|
||||
Int32 wr;
|
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Int32 EOB;
|
||||
|
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/*
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After sorting (eg, here),
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s->arr1 [ 0 .. s->nblock-1 ] holds sorted order,
|
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and
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((UChar*)s->arr2) [ 0 .. s->nblock-1 ]
|
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holds the original block data.
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||||
|
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The first thing to do is generate the MTF values,
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and put them in
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((UInt16*)s->arr1) [ 0 .. s->nblock-1 ].
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Because there are strictly fewer or equal MTF values
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than block values, ptr values in this area are overwritten
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with MTF values only when they are no longer needed.
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||||
|
||||
The final compressed bitstream is generated into the
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area starting at
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(UChar*) (&((UChar*)s->arr2)[s->nblock])
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||||
|
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These storage aliases are set up in bzCompressInit(),
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except for the last one, which is arranged in
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compressBlock().
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||||
*/
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||||
UInt32* ptr = s->ptr;
|
||||
UChar* block = s->block;
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UInt16* mtfv = s->mtfv;
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|
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makeMaps_e ( s );
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EOB = s->nInUse+1;
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||||
|
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for (i = 0; i <= EOB; i++) s->mtfFreq[i] = 0;
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||||
|
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wr = 0;
|
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zPend = 0;
|
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for (i = 0; i < s->nInUse; i++) yy[i] = (UChar) i;
|
||||
|
||||
for (i = 0; i < s->nblock; i++) {
|
||||
UChar ll_i;
|
||||
AssertD ( wr <= i, "generateMTFValues(1)" );
|
||||
j = ptr[i]-1; if (j < 0) j += s->nblock;
|
||||
ll_i = s->unseqToSeq[block[j]];
|
||||
AssertD ( ll_i < s->nInUse, "generateMTFValues(2a)" );
|
||||
|
||||
if (yy[0] == ll_i) {
|
||||
zPend++;
|
||||
} else {
|
||||
|
||||
if (zPend > 0) {
|
||||
zPend--;
|
||||
while (True) {
|
||||
if (zPend & 1) {
|
||||
mtfv[wr] = BZ_RUNB; wr++;
|
||||
s->mtfFreq[BZ_RUNB]++;
|
||||
} else {
|
||||
mtfv[wr] = BZ_RUNA; wr++;
|
||||
s->mtfFreq[BZ_RUNA]++;
|
||||
}
|
||||
if (zPend < 2) break;
|
||||
zPend = (zPend - 2) / 2;
|
||||
};
|
||||
zPend = 0;
|
||||
}
|
||||
{
|
||||
register UChar rtmp;
|
||||
register UChar* ryy_j;
|
||||
register UChar rll_i;
|
||||
rtmp = yy[1];
|
||||
yy[1] = yy[0];
|
||||
ryy_j = &(yy[1]);
|
||||
rll_i = ll_i;
|
||||
while ( rll_i != rtmp ) {
|
||||
register UChar rtmp2;
|
||||
ryy_j++;
|
||||
rtmp2 = rtmp;
|
||||
rtmp = *ryy_j;
|
||||
*ryy_j = rtmp2;
|
||||
};
|
||||
yy[0] = rtmp;
|
||||
j = ryy_j - &(yy[0]);
|
||||
mtfv[wr] = j+1; wr++; s->mtfFreq[j+1]++;
|
||||
}
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
if (zPend > 0) {
|
||||
zPend--;
|
||||
while (True) {
|
||||
if (zPend & 1) {
|
||||
mtfv[wr] = BZ_RUNB; wr++;
|
||||
s->mtfFreq[BZ_RUNB]++;
|
||||
} else {
|
||||
mtfv[wr] = BZ_RUNA; wr++;
|
||||
s->mtfFreq[BZ_RUNA]++;
|
||||
}
|
||||
if (zPend < 2) break;
|
||||
zPend = (zPend - 2) / 2;
|
||||
};
|
||||
zPend = 0;
|
||||
}
|
||||
|
||||
mtfv[wr] = EOB; wr++; s->mtfFreq[EOB]++;
|
||||
|
||||
s->nMTF = wr;
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define BZ_LESSER_ICOST 0
|
||||
#define BZ_GREATER_ICOST 15
|
||||
|
||||
static
|
||||
void sendMTFValues ( EState* s )
|
||||
{
|
||||
Int32 v, t, i, j, gs, ge, totc, bt, bc, iter;
|
||||
Int32 nSelectors, alphaSize, minLen, maxLen, selCtr;
|
||||
Int32 nGroups, nBytes;
|
||||
|
||||
/*--
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
is a global since the decoder also needs it.
|
||||
|
||||
Int32 code[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 rfreq[BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
are also globals only used in this proc.
|
||||
Made global to keep stack frame size small.
|
||||
--*/
|
||||
|
||||
|
||||
UInt16 cost[BZ_N_GROUPS];
|
||||
Int32 fave[BZ_N_GROUPS];
|
||||
|
||||
UInt16* mtfv = s->mtfv;
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf3( " %d in block, %d after MTF & 1-2 coding, "
|
||||
"%d+2 syms in use\n",
|
||||
s->nblock, s->nMTF, s->nInUse );
|
||||
|
||||
alphaSize = s->nInUse+2;
|
||||
for (t = 0; t < BZ_N_GROUPS; t++)
|
||||
for (v = 0; v < alphaSize; v++)
|
||||
s->len[t][v] = BZ_GREATER_ICOST;
|
||||
|
||||
/*--- Decide how many coding tables to use ---*/
|
||||
AssertH ( s->nMTF > 0, 3001 );
|
||||
if (s->nMTF < 200) nGroups = 2; else
|
||||
if (s->nMTF < 600) nGroups = 3; else
|
||||
if (s->nMTF < 1200) nGroups = 4; else
|
||||
if (s->nMTF < 2400) nGroups = 5; else
|
||||
nGroups = 6;
|
||||
|
||||
/*--- Generate an initial set of coding tables ---*/
|
||||
{
|
||||
Int32 nPart, remF, tFreq, aFreq;
|
||||
|
||||
nPart = nGroups;
|
||||
remF = s->nMTF;
|
||||
gs = 0;
|
||||
while (nPart > 0) {
|
||||
tFreq = remF / nPart;
|
||||
ge = gs-1;
|
||||
aFreq = 0;
|
||||
while (aFreq < tFreq && ge < alphaSize-1) {
|
||||
ge++;
|
||||
aFreq += s->mtfFreq[ge];
|
||||
}
|
||||
|
||||
if (ge > gs
|
||||
&& nPart != nGroups && nPart != 1
|
||||
&& ((nGroups-nPart) % 2 == 1)) {
|
||||
aFreq -= s->mtfFreq[ge];
|
||||
ge--;
|
||||
}
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf5( " initial group %d, [%d .. %d], "
|
||||
"has %d syms (%4.1f%%)\n",
|
||||
nPart, gs, ge, aFreq,
|
||||
(100.0 * (float)aFreq) / (float)(s->nMTF) );
|
||||
|
||||
for (v = 0; v < alphaSize; v++)
|
||||
if (v >= gs && v <= ge)
|
||||
s->len[nPart-1][v] = BZ_LESSER_ICOST; else
|
||||
s->len[nPart-1][v] = BZ_GREATER_ICOST;
|
||||
|
||||
nPart--;
|
||||
gs = ge+1;
|
||||
remF -= aFreq;
|
||||
}
|
||||
}
|
||||
|
||||
/*---
|
||||
Iterate up to BZ_N_ITERS times to improve the tables.
|
||||
---*/
|
||||
for (iter = 0; iter < BZ_N_ITERS; iter++) {
|
||||
|
||||
for (t = 0; t < nGroups; t++) fave[t] = 0;
|
||||
|
||||
for (t = 0; t < nGroups; t++)
|
||||
for (v = 0; v < alphaSize; v++)
|
||||
s->rfreq[t][v] = 0;
|
||||
|
||||
/*---
|
||||
Set up an auxiliary length table which is used to fast-track
|
||||
the common case (nGroups == 6).
|
||||
---*/
|
||||
if (nGroups == 6) {
|
||||
for (v = 0; v < alphaSize; v++) {
|
||||
s->len_pack[v][0] = (s->len[1][v] << 16) | s->len[0][v];
|
||||
s->len_pack[v][1] = (s->len[3][v] << 16) | s->len[2][v];
|
||||
s->len_pack[v][2] = (s->len[5][v] << 16) | s->len[4][v];
|
||||
}
|
||||
}
|
||||
|
||||
nSelectors = 0;
|
||||
totc = 0;
|
||||
gs = 0;
|
||||
while (True) {
|
||||
|
||||
/*--- Set group start & end marks. --*/
|
||||
if (gs >= s->nMTF) break;
|
||||
ge = gs + BZ_G_SIZE - 1;
|
||||
if (ge >= s->nMTF) ge = s->nMTF-1;
|
||||
|
||||
/*--
|
||||
Calculate the cost of this group as coded
|
||||
by each of the coding tables.
|
||||
--*/
|
||||
for (t = 0; t < nGroups; t++) cost[t] = 0;
|
||||
|
||||
if (nGroups == 6 && 50 == ge-gs+1) {
|
||||
/*--- fast track the common case ---*/
|
||||
register UInt32 cost01, cost23, cost45;
|
||||
register UInt16 icv;
|
||||
cost01 = cost23 = cost45 = 0;
|
||||
|
||||
# define BZ_ITER(nn) \
|
||||
icv = mtfv[gs+(nn)]; \
|
||||
cost01 += s->len_pack[icv][0]; \
|
||||
cost23 += s->len_pack[icv][1]; \
|
||||
cost45 += s->len_pack[icv][2]; \
|
||||
|
||||
BZ_ITER(0); BZ_ITER(1); BZ_ITER(2); BZ_ITER(3); BZ_ITER(4);
|
||||
BZ_ITER(5); BZ_ITER(6); BZ_ITER(7); BZ_ITER(8); BZ_ITER(9);
|
||||
BZ_ITER(10); BZ_ITER(11); BZ_ITER(12); BZ_ITER(13); BZ_ITER(14);
|
||||
BZ_ITER(15); BZ_ITER(16); BZ_ITER(17); BZ_ITER(18); BZ_ITER(19);
|
||||
BZ_ITER(20); BZ_ITER(21); BZ_ITER(22); BZ_ITER(23); BZ_ITER(24);
|
||||
BZ_ITER(25); BZ_ITER(26); BZ_ITER(27); BZ_ITER(28); BZ_ITER(29);
|
||||
BZ_ITER(30); BZ_ITER(31); BZ_ITER(32); BZ_ITER(33); BZ_ITER(34);
|
||||
BZ_ITER(35); BZ_ITER(36); BZ_ITER(37); BZ_ITER(38); BZ_ITER(39);
|
||||
BZ_ITER(40); BZ_ITER(41); BZ_ITER(42); BZ_ITER(43); BZ_ITER(44);
|
||||
BZ_ITER(45); BZ_ITER(46); BZ_ITER(47); BZ_ITER(48); BZ_ITER(49);
|
||||
|
||||
# undef BZ_ITER
|
||||
|
||||
cost[0] = cost01 & 0xffff; cost[1] = cost01 >> 16;
|
||||
cost[2] = cost23 & 0xffff; cost[3] = cost23 >> 16;
|
||||
cost[4] = cost45 & 0xffff; cost[5] = cost45 >> 16;
|
||||
|
||||
} else {
|
||||
/*--- slow version which correctly handles all situations ---*/
|
||||
for (i = gs; i <= ge; i++) {
|
||||
UInt16 icv = mtfv[i];
|
||||
for (t = 0; t < nGroups; t++) cost[t] += s->len[t][icv];
|
||||
}
|
||||
}
|
||||
|
||||
/*--
|
||||
Find the coding table which is best for this group,
|
||||
and record its identity in the selector table.
|
||||
--*/
|
||||
bc = 999999999; bt = -1;
|
||||
for (t = 0; t < nGroups; t++)
|
||||
if (cost[t] < bc) { bc = cost[t]; bt = t; };
|
||||
totc += bc;
|
||||
fave[bt]++;
|
||||
s->selector[nSelectors] = bt;
|
||||
nSelectors++;
|
||||
|
||||
/*--
|
||||
Increment the symbol frequencies for the selected table.
|
||||
--*/
|
||||
if (nGroups == 6 && 50 == ge-gs+1) {
|
||||
/*--- fast track the common case ---*/
|
||||
|
||||
# define BZ_ITUR(nn) s->rfreq[bt][ mtfv[gs+(nn)] ]++
|
||||
|
||||
BZ_ITUR(0); BZ_ITUR(1); BZ_ITUR(2); BZ_ITUR(3); BZ_ITUR(4);
|
||||
BZ_ITUR(5); BZ_ITUR(6); BZ_ITUR(7); BZ_ITUR(8); BZ_ITUR(9);
|
||||
BZ_ITUR(10); BZ_ITUR(11); BZ_ITUR(12); BZ_ITUR(13); BZ_ITUR(14);
|
||||
BZ_ITUR(15); BZ_ITUR(16); BZ_ITUR(17); BZ_ITUR(18); BZ_ITUR(19);
|
||||
BZ_ITUR(20); BZ_ITUR(21); BZ_ITUR(22); BZ_ITUR(23); BZ_ITUR(24);
|
||||
BZ_ITUR(25); BZ_ITUR(26); BZ_ITUR(27); BZ_ITUR(28); BZ_ITUR(29);
|
||||
BZ_ITUR(30); BZ_ITUR(31); BZ_ITUR(32); BZ_ITUR(33); BZ_ITUR(34);
|
||||
BZ_ITUR(35); BZ_ITUR(36); BZ_ITUR(37); BZ_ITUR(38); BZ_ITUR(39);
|
||||
BZ_ITUR(40); BZ_ITUR(41); BZ_ITUR(42); BZ_ITUR(43); BZ_ITUR(44);
|
||||
BZ_ITUR(45); BZ_ITUR(46); BZ_ITUR(47); BZ_ITUR(48); BZ_ITUR(49);
|
||||
|
||||
# undef BZ_ITUR
|
||||
|
||||
} else {
|
||||
/*--- slow version which correctly handles all situations ---*/
|
||||
for (i = gs; i <= ge; i++)
|
||||
s->rfreq[bt][ mtfv[i] ]++;
|
||||
}
|
||||
|
||||
gs = ge+1;
|
||||
}
|
||||
if (s->verbosity >= 3) {
|
||||
VPrintf2 ( " pass %d: size is %d, grp uses are ",
|
||||
iter+1, totc/8 );
|
||||
for (t = 0; t < nGroups; t++)
|
||||
VPrintf1 ( "%d ", fave[t] );
|
||||
VPrintf0 ( "\n" );
|
||||
}
|
||||
|
||||
/*--
|
||||
Recompute the tables based on the accumulated frequencies.
|
||||
--*/
|
||||
/* maxLen was changed from 20 to 17 in bzip2-1.0.3. See
|
||||
comment in huffman.c for details. */
|
||||
for (t = 0; t < nGroups; t++)
|
||||
BZ2_hbMakeCodeLengths ( &(s->len[t][0]), &(s->rfreq[t][0]),
|
||||
alphaSize, 17 /*20*/ );
|
||||
}
|
||||
|
||||
|
||||
AssertH( nGroups < 8, 3002 );
|
||||
AssertH( nSelectors < 32768 &&
|
||||
nSelectors <= (2 + (900000 / BZ_G_SIZE)),
|
||||
3003 );
|
||||
|
||||
|
||||
/*--- Compute MTF values for the selectors. ---*/
|
||||
{
|
||||
UChar pos[BZ_N_GROUPS], ll_i, tmp2, tmp;
|
||||
for (i = 0; i < nGroups; i++) pos[i] = i;
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
ll_i = s->selector[i];
|
||||
j = 0;
|
||||
tmp = pos[j];
|
||||
while ( ll_i != tmp ) {
|
||||
j++;
|
||||
tmp2 = tmp;
|
||||
tmp = pos[j];
|
||||
pos[j] = tmp2;
|
||||
};
|
||||
pos[0] = tmp;
|
||||
s->selectorMtf[i] = j;
|
||||
}
|
||||
};
|
||||
|
||||
/*--- Assign actual codes for the tables. --*/
|
||||
for (t = 0; t < nGroups; t++) {
|
||||
minLen = 32;
|
||||
maxLen = 0;
|
||||
for (i = 0; i < alphaSize; i++) {
|
||||
if (s->len[t][i] > maxLen) maxLen = s->len[t][i];
|
||||
if (s->len[t][i] < minLen) minLen = s->len[t][i];
|
||||
}
|
||||
AssertH ( !(maxLen > 17 /*20*/ ), 3004 );
|
||||
AssertH ( !(minLen < 1), 3005 );
|
||||
BZ2_hbAssignCodes ( &(s->code[t][0]), &(s->len[t][0]),
|
||||
minLen, maxLen, alphaSize );
|
||||
}
|
||||
|
||||
/*--- Transmit the mapping table. ---*/
|
||||
{
|
||||
Bool inUse16[16];
|
||||
for (i = 0; i < 16; i++) {
|
||||
inUse16[i] = False;
|
||||
for (j = 0; j < 16; j++)
|
||||
if (s->inUse[i * 16 + j]) inUse16[i] = True;
|
||||
}
|
||||
|
||||
nBytes = s->numZ;
|
||||
for (i = 0; i < 16; i++)
|
||||
if (inUse16[i]) bsW(s,1,1); else bsW(s,1,0);
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
if (inUse16[i])
|
||||
for (j = 0; j < 16; j++) {
|
||||
if (s->inUse[i * 16 + j]) bsW(s,1,1); else bsW(s,1,0);
|
||||
}
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1( " bytes: mapping %d, ", s->numZ-nBytes );
|
||||
}
|
||||
|
||||
/*--- Now the selectors. ---*/
|
||||
nBytes = s->numZ;
|
||||
bsW ( s, 3, nGroups );
|
||||
bsW ( s, 15, nSelectors );
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
for (j = 0; j < s->selectorMtf[i]; j++) bsW(s,1,1);
|
||||
bsW(s,1,0);
|
||||
}
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1( "selectors %d, ", s->numZ-nBytes );
|
||||
|
||||
/*--- Now the coding tables. ---*/
|
||||
nBytes = s->numZ;
|
||||
|
||||
for (t = 0; t < nGroups; t++) {
|
||||
Int32 curr = s->len[t][0];
|
||||
bsW ( s, 5, curr );
|
||||
for (i = 0; i < alphaSize; i++) {
|
||||
while (curr < s->len[t][i]) { bsW(s,2,2); curr++; /* 10 */ };
|
||||
while (curr > s->len[t][i]) { bsW(s,2,3); curr--; /* 11 */ };
|
||||
bsW ( s, 1, 0 );
|
||||
}
|
||||
}
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1 ( "code lengths %d, ", s->numZ-nBytes );
|
||||
|
||||
/*--- And finally, the block data proper ---*/
|
||||
nBytes = s->numZ;
|
||||
selCtr = 0;
|
||||
gs = 0;
|
||||
while (True) {
|
||||
if (gs >= s->nMTF) break;
|
||||
ge = gs + BZ_G_SIZE - 1;
|
||||
if (ge >= s->nMTF) ge = s->nMTF-1;
|
||||
AssertH ( s->selector[selCtr] < nGroups, 3006 );
|
||||
|
||||
if (nGroups == 6 && 50 == ge-gs+1) {
|
||||
/*--- fast track the common case ---*/
|
||||
UInt16 mtfv_i;
|
||||
UChar* s_len_sel_selCtr
|
||||
= &(s->len[s->selector[selCtr]][0]);
|
||||
Int32* s_code_sel_selCtr
|
||||
= &(s->code[s->selector[selCtr]][0]);
|
||||
|
||||
# define BZ_ITAH(nn) \
|
||||
mtfv_i = mtfv[gs+(nn)]; \
|
||||
bsW ( s, \
|
||||
s_len_sel_selCtr[mtfv_i], \
|
||||
s_code_sel_selCtr[mtfv_i] )
|
||||
|
||||
BZ_ITAH(0); BZ_ITAH(1); BZ_ITAH(2); BZ_ITAH(3); BZ_ITAH(4);
|
||||
BZ_ITAH(5); BZ_ITAH(6); BZ_ITAH(7); BZ_ITAH(8); BZ_ITAH(9);
|
||||
BZ_ITAH(10); BZ_ITAH(11); BZ_ITAH(12); BZ_ITAH(13); BZ_ITAH(14);
|
||||
BZ_ITAH(15); BZ_ITAH(16); BZ_ITAH(17); BZ_ITAH(18); BZ_ITAH(19);
|
||||
BZ_ITAH(20); BZ_ITAH(21); BZ_ITAH(22); BZ_ITAH(23); BZ_ITAH(24);
|
||||
BZ_ITAH(25); BZ_ITAH(26); BZ_ITAH(27); BZ_ITAH(28); BZ_ITAH(29);
|
||||
BZ_ITAH(30); BZ_ITAH(31); BZ_ITAH(32); BZ_ITAH(33); BZ_ITAH(34);
|
||||
BZ_ITAH(35); BZ_ITAH(36); BZ_ITAH(37); BZ_ITAH(38); BZ_ITAH(39);
|
||||
BZ_ITAH(40); BZ_ITAH(41); BZ_ITAH(42); BZ_ITAH(43); BZ_ITAH(44);
|
||||
BZ_ITAH(45); BZ_ITAH(46); BZ_ITAH(47); BZ_ITAH(48); BZ_ITAH(49);
|
||||
|
||||
# undef BZ_ITAH
|
||||
|
||||
} else {
|
||||
/*--- slow version which correctly handles all situations ---*/
|
||||
for (i = gs; i <= ge; i++) {
|
||||
bsW ( s,
|
||||
s->len [s->selector[selCtr]] [mtfv[i]],
|
||||
s->code [s->selector[selCtr]] [mtfv[i]] );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
gs = ge+1;
|
||||
selCtr++;
|
||||
}
|
||||
AssertH( selCtr == nSelectors, 3007 );
|
||||
|
||||
if (s->verbosity >= 3)
|
||||
VPrintf1( "codes %d\n", s->numZ-nBytes );
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_compressBlock ( EState* s, Bool is_last_block )
|
||||
{
|
||||
if (s->nblock > 0) {
|
||||
|
||||
BZ_FINALISE_CRC ( s->blockCRC );
|
||||
s->combinedCRC = (s->combinedCRC << 1) | (s->combinedCRC >> 31);
|
||||
s->combinedCRC ^= s->blockCRC;
|
||||
if (s->blockNo > 1) s->numZ = 0;
|
||||
|
||||
if (s->verbosity >= 2)
|
||||
VPrintf4( " block %d: crc = 0x%08x, "
|
||||
"combined CRC = 0x%08x, size = %d\n",
|
||||
s->blockNo, s->blockCRC, s->combinedCRC, s->nblock );
|
||||
|
||||
BZ2_blockSort ( s );
|
||||
}
|
||||
|
||||
s->zbits = (UChar*) (&((UChar*)s->arr2)[s->nblock]);
|
||||
|
||||
/*-- If this is the first block, create the stream header. --*/
|
||||
if (s->blockNo == 1) {
|
||||
BZ2_bsInitWrite ( s );
|
||||
bsPutUChar ( s, BZ_HDR_B );
|
||||
bsPutUChar ( s, BZ_HDR_Z );
|
||||
bsPutUChar ( s, BZ_HDR_h );
|
||||
bsPutUChar ( s, (UChar)(BZ_HDR_0 + s->blockSize100k) );
|
||||
}
|
||||
|
||||
if (s->nblock > 0) {
|
||||
|
||||
bsPutUChar ( s, 0x31 ); bsPutUChar ( s, 0x41 );
|
||||
bsPutUChar ( s, 0x59 ); bsPutUChar ( s, 0x26 );
|
||||
bsPutUChar ( s, 0x53 ); bsPutUChar ( s, 0x59 );
|
||||
|
||||
/*-- Now the block's CRC, so it is in a known place. --*/
|
||||
bsPutUInt32 ( s, s->blockCRC );
|
||||
|
||||
/*--
|
||||
Now a single bit indicating (non-)randomisation.
|
||||
As of version 0.9.5, we use a better sorting algorithm
|
||||
which makes randomisation unnecessary. So always set
|
||||
the randomised bit to 'no'. Of course, the decoder
|
||||
still needs to be able to handle randomised blocks
|
||||
so as to maintain backwards compatibility with
|
||||
older versions of bzip2.
|
||||
--*/
|
||||
bsW(s,1,0);
|
||||
|
||||
bsW ( s, 24, s->origPtr );
|
||||
generateMTFValues ( s );
|
||||
sendMTFValues ( s );
|
||||
}
|
||||
|
||||
|
||||
/*-- If this is the last block, add the stream trailer. --*/
|
||||
if (is_last_block) {
|
||||
|
||||
bsPutUChar ( s, 0x17 ); bsPutUChar ( s, 0x72 );
|
||||
bsPutUChar ( s, 0x45 ); bsPutUChar ( s, 0x38 );
|
||||
bsPutUChar ( s, 0x50 ); bsPutUChar ( s, 0x90 );
|
||||
bsPutUInt32 ( s, s->combinedCRC );
|
||||
if (s->verbosity >= 2)
|
||||
VPrintf1( " final combined CRC = 0x%08x\n ", s->combinedCRC );
|
||||
bsFinishWrite ( s );
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end compress.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
104
bzip2/crctable.c
104
bzip2/crctable.c
|
|
@ -1,104 +0,0 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Table for doing CRCs ---*/
|
||||
/*--- crctable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.5 of 10 December 2007
|
||||
Copyright (C) 1996-2007 Julian Seward <jseward@bzip.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
/*--
|
||||
I think this is an implementation of the AUTODIN-II,
|
||||
Ethernet & FDDI 32-bit CRC standard. Vaguely derived
|
||||
from code by Rob Warnock, in Section 51 of the
|
||||
comp.compression FAQ.
|
||||
--*/
|
||||
|
||||
UInt32 BZ2_crc32Table[256] = {
|
||||
|
||||
/*-- Ugly, innit? --*/
|
||||
|
||||
0x00000000L, 0x04c11db7L, 0x09823b6eL, 0x0d4326d9L,
|
||||
0x130476dcL, 0x17c56b6bL, 0x1a864db2L, 0x1e475005L,
|
||||
0x2608edb8L, 0x22c9f00fL, 0x2f8ad6d6L, 0x2b4bcb61L,
|
||||
0x350c9b64L, 0x31cd86d3L, 0x3c8ea00aL, 0x384fbdbdL,
|
||||
0x4c11db70L, 0x48d0c6c7L, 0x4593e01eL, 0x4152fda9L,
|
||||
0x5f15adacL, 0x5bd4b01bL, 0x569796c2L, 0x52568b75L,
|
||||
0x6a1936c8L, 0x6ed82b7fL, 0x639b0da6L, 0x675a1011L,
|
||||
0x791d4014L, 0x7ddc5da3L, 0x709f7b7aL, 0x745e66cdL,
|
||||
0x9823b6e0L, 0x9ce2ab57L, 0x91a18d8eL, 0x95609039L,
|
||||
0x8b27c03cL, 0x8fe6dd8bL, 0x82a5fb52L, 0x8664e6e5L,
|
||||
0xbe2b5b58L, 0xbaea46efL, 0xb7a96036L, 0xb3687d81L,
|
||||
0xad2f2d84L, 0xa9ee3033L, 0xa4ad16eaL, 0xa06c0b5dL,
|
||||
0xd4326d90L, 0xd0f37027L, 0xddb056feL, 0xd9714b49L,
|
||||
0xc7361b4cL, 0xc3f706fbL, 0xceb42022L, 0xca753d95L,
|
||||
0xf23a8028L, 0xf6fb9d9fL, 0xfbb8bb46L, 0xff79a6f1L,
|
||||
0xe13ef6f4L, 0xe5ffeb43L, 0xe8bccd9aL, 0xec7dd02dL,
|
||||
0x34867077L, 0x30476dc0L, 0x3d044b19L, 0x39c556aeL,
|
||||
0x278206abL, 0x23431b1cL, 0x2e003dc5L, 0x2ac12072L,
|
||||
0x128e9dcfL, 0x164f8078L, 0x1b0ca6a1L, 0x1fcdbb16L,
|
||||
0x018aeb13L, 0x054bf6a4L, 0x0808d07dL, 0x0cc9cdcaL,
|
||||
0x7897ab07L, 0x7c56b6b0L, 0x71159069L, 0x75d48ddeL,
|
||||
0x6b93dddbL, 0x6f52c06cL, 0x6211e6b5L, 0x66d0fb02L,
|
||||
0x5e9f46bfL, 0x5a5e5b08L, 0x571d7dd1L, 0x53dc6066L,
|
||||
0x4d9b3063L, 0x495a2dd4L, 0x44190b0dL, 0x40d816baL,
|
||||
0xaca5c697L, 0xa864db20L, 0xa527fdf9L, 0xa1e6e04eL,
|
||||
0xbfa1b04bL, 0xbb60adfcL, 0xb6238b25L, 0xb2e29692L,
|
||||
0x8aad2b2fL, 0x8e6c3698L, 0x832f1041L, 0x87ee0df6L,
|
||||
0x99a95df3L, 0x9d684044L, 0x902b669dL, 0x94ea7b2aL,
|
||||
0xe0b41de7L, 0xe4750050L, 0xe9362689L, 0xedf73b3eL,
|
||||
0xf3b06b3bL, 0xf771768cL, 0xfa325055L, 0xfef34de2L,
|
||||
0xc6bcf05fL, 0xc27dede8L, 0xcf3ecb31L, 0xcbffd686L,
|
||||
0xd5b88683L, 0xd1799b34L, 0xdc3abdedL, 0xd8fba05aL,
|
||||
0x690ce0eeL, 0x6dcdfd59L, 0x608edb80L, 0x644fc637L,
|
||||
0x7a089632L, 0x7ec98b85L, 0x738aad5cL, 0x774bb0ebL,
|
||||
0x4f040d56L, 0x4bc510e1L, 0x46863638L, 0x42472b8fL,
|
||||
0x5c007b8aL, 0x58c1663dL, 0x558240e4L, 0x51435d53L,
|
||||
0x251d3b9eL, 0x21dc2629L, 0x2c9f00f0L, 0x285e1d47L,
|
||||
0x36194d42L, 0x32d850f5L, 0x3f9b762cL, 0x3b5a6b9bL,
|
||||
0x0315d626L, 0x07d4cb91L, 0x0a97ed48L, 0x0e56f0ffL,
|
||||
0x1011a0faL, 0x14d0bd4dL, 0x19939b94L, 0x1d528623L,
|
||||
0xf12f560eL, 0xf5ee4bb9L, 0xf8ad6d60L, 0xfc6c70d7L,
|
||||
0xe22b20d2L, 0xe6ea3d65L, 0xeba91bbcL, 0xef68060bL,
|
||||
0xd727bbb6L, 0xd3e6a601L, 0xdea580d8L, 0xda649d6fL,
|
||||
0xc423cd6aL, 0xc0e2d0ddL, 0xcda1f604L, 0xc960ebb3L,
|
||||
0xbd3e8d7eL, 0xb9ff90c9L, 0xb4bcb610L, 0xb07daba7L,
|
||||
0xae3afba2L, 0xaafbe615L, 0xa7b8c0ccL, 0xa379dd7bL,
|
||||
0x9b3660c6L, 0x9ff77d71L, 0x92b45ba8L, 0x9675461fL,
|
||||
0x8832161aL, 0x8cf30badL, 0x81b02d74L, 0x857130c3L,
|
||||
0x5d8a9099L, 0x594b8d2eL, 0x5408abf7L, 0x50c9b640L,
|
||||
0x4e8ee645L, 0x4a4ffbf2L, 0x470cdd2bL, 0x43cdc09cL,
|
||||
0x7b827d21L, 0x7f436096L, 0x7200464fL, 0x76c15bf8L,
|
||||
0x68860bfdL, 0x6c47164aL, 0x61043093L, 0x65c52d24L,
|
||||
0x119b4be9L, 0x155a565eL, 0x18197087L, 0x1cd86d30L,
|
||||
0x029f3d35L, 0x065e2082L, 0x0b1d065bL, 0x0fdc1becL,
|
||||
0x3793a651L, 0x3352bbe6L, 0x3e119d3fL, 0x3ad08088L,
|
||||
0x2497d08dL, 0x2056cd3aL, 0x2d15ebe3L, 0x29d4f654L,
|
||||
0xc5a92679L, 0xc1683bceL, 0xcc2b1d17L, 0xc8ea00a0L,
|
||||
0xd6ad50a5L, 0xd26c4d12L, 0xdf2f6bcbL, 0xdbee767cL,
|
||||
0xe3a1cbc1L, 0xe760d676L, 0xea23f0afL, 0xeee2ed18L,
|
||||
0xf0a5bd1dL, 0xf464a0aaL, 0xf9278673L, 0xfde69bc4L,
|
||||
0x89b8fd09L, 0x8d79e0beL, 0x803ac667L, 0x84fbdbd0L,
|
||||
0x9abc8bd5L, 0x9e7d9662L, 0x933eb0bbL, 0x97ffad0cL,
|
||||
0xafb010b1L, 0xab710d06L, 0xa6322bdfL, 0xa2f33668L,
|
||||
0xbcb4666dL, 0xb8757bdaL, 0xb5365d03L, 0xb1f740b4L
|
||||
};
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end crctable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
205
bzip2/huffman.c
205
bzip2/huffman.c
|
|
@ -1,205 +0,0 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Huffman coding low-level stuff ---*/
|
||||
/*--- huffman.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.5 of 10 December 2007
|
||||
Copyright (C) 1996-2007 Julian Seward <jseward@bzip.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define WEIGHTOF(zz0) ((zz0) & 0xffffff00)
|
||||
#define DEPTHOF(zz1) ((zz1) & 0x000000ff)
|
||||
#define MYMAX(zz2,zz3) ((zz2) > (zz3) ? (zz2) : (zz3))
|
||||
|
||||
#define ADDWEIGHTS(zw1,zw2) \
|
||||
(WEIGHTOF(zw1)+WEIGHTOF(zw2)) | \
|
||||
(1 + MYMAX(DEPTHOF(zw1),DEPTHOF(zw2)))
|
||||
|
||||
#define UPHEAP(z) \
|
||||
{ \
|
||||
Int32 zz, tmp; \
|
||||
zz = z; tmp = heap[zz]; \
|
||||
while (weight[tmp] < weight[heap[zz >> 1]]) { \
|
||||
heap[zz] = heap[zz >> 1]; \
|
||||
zz >>= 1; \
|
||||
} \
|
||||
heap[zz] = tmp; \
|
||||
}
|
||||
|
||||
#define DOWNHEAP(z) \
|
||||
{ \
|
||||
Int32 zz, yy, tmp; \
|
||||
zz = z; tmp = heap[zz]; \
|
||||
while (True) { \
|
||||
yy = zz << 1; \
|
||||
if (yy > nHeap) break; \
|
||||
if (yy < nHeap && \
|
||||
weight[heap[yy+1]] < weight[heap[yy]]) \
|
||||
yy++; \
|
||||
if (weight[tmp] < weight[heap[yy]]) break; \
|
||||
heap[zz] = heap[yy]; \
|
||||
zz = yy; \
|
||||
} \
|
||||
heap[zz] = tmp; \
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_hbMakeCodeLengths ( UChar *len,
|
||||
Int32 *freq,
|
||||
Int32 alphaSize,
|
||||
Int32 maxLen )
|
||||
{
|
||||
/*--
|
||||
Nodes and heap entries run from 1. Entry 0
|
||||
for both the heap and nodes is a sentinel.
|
||||
--*/
|
||||
Int32 nNodes, nHeap, n1, n2, i, j, k;
|
||||
Bool tooLong;
|
||||
|
||||
Int32 heap [ BZ_MAX_ALPHA_SIZE + 2 ];
|
||||
Int32 weight [ BZ_MAX_ALPHA_SIZE * 2 ];
|
||||
Int32 parent [ BZ_MAX_ALPHA_SIZE * 2 ];
|
||||
|
||||
for (i = 0; i < alphaSize; i++)
|
||||
weight[i+1] = (freq[i] == 0 ? 1 : freq[i]) << 8;
|
||||
|
||||
while (True) {
|
||||
|
||||
nNodes = alphaSize;
|
||||
nHeap = 0;
|
||||
|
||||
heap[0] = 0;
|
||||
weight[0] = 0;
|
||||
parent[0] = -2;
|
||||
|
||||
for (i = 1; i <= alphaSize; i++) {
|
||||
parent[i] = -1;
|
||||
nHeap++;
|
||||
heap[nHeap] = i;
|
||||
UPHEAP(nHeap);
|
||||
}
|
||||
|
||||
AssertH( nHeap < (BZ_MAX_ALPHA_SIZE+2), 2001 );
|
||||
|
||||
while (nHeap > 1) {
|
||||
n1 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
|
||||
n2 = heap[1]; heap[1] = heap[nHeap]; nHeap--; DOWNHEAP(1);
|
||||
nNodes++;
|
||||
parent[n1] = parent[n2] = nNodes;
|
||||
weight[nNodes] = ADDWEIGHTS(weight[n1], weight[n2]);
|
||||
parent[nNodes] = -1;
|
||||
nHeap++;
|
||||
heap[nHeap] = nNodes;
|
||||
UPHEAP(nHeap);
|
||||
}
|
||||
|
||||
AssertH( nNodes < (BZ_MAX_ALPHA_SIZE * 2), 2002 );
|
||||
|
||||
tooLong = False;
|
||||
for (i = 1; i <= alphaSize; i++) {
|
||||
j = 0;
|
||||
k = i;
|
||||
while (parent[k] >= 0) { k = parent[k]; j++; }
|
||||
len[i-1] = j;
|
||||
if (j > maxLen) tooLong = True;
|
||||
}
|
||||
|
||||
if (! tooLong) break;
|
||||
|
||||
/* 17 Oct 04: keep-going condition for the following loop used
|
||||
to be 'i < alphaSize', which missed the last element,
|
||||
theoretically leading to the possibility of the compressor
|
||||
looping. However, this count-scaling step is only needed if
|
||||
one of the generated Huffman code words is longer than
|
||||
maxLen, which up to and including version 1.0.2 was 20 bits,
|
||||
which is extremely unlikely. In version 1.0.3 maxLen was
|
||||
changed to 17 bits, which has minimal effect on compression
|
||||
ratio, but does mean this scaling step is used from time to
|
||||
time, enough to verify that it works.
|
||||
|
||||
This means that bzip2-1.0.3 and later will only produce
|
||||
Huffman codes with a maximum length of 17 bits. However, in
|
||||
order to preserve backwards compatibility with bitstreams
|
||||
produced by versions pre-1.0.3, the decompressor must still
|
||||
handle lengths of up to 20. */
|
||||
|
||||
for (i = 1; i <= alphaSize; i++) {
|
||||
j = weight[i] >> 8;
|
||||
j = 1 + (j / 2);
|
||||
weight[i] = j << 8;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_hbAssignCodes ( Int32 *code,
|
||||
UChar *length,
|
||||
Int32 minLen,
|
||||
Int32 maxLen,
|
||||
Int32 alphaSize )
|
||||
{
|
||||
Int32 n, vec, i;
|
||||
|
||||
vec = 0;
|
||||
for (n = minLen; n <= maxLen; n++) {
|
||||
for (i = 0; i < alphaSize; i++)
|
||||
if (length[i] == n) { code[i] = vec; vec++; };
|
||||
vec <<= 1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
void BZ2_hbCreateDecodeTables ( Int32 *limit,
|
||||
Int32 *base,
|
||||
Int32 *perm,
|
||||
UChar *length,
|
||||
Int32 minLen,
|
||||
Int32 maxLen,
|
||||
Int32 alphaSize )
|
||||
{
|
||||
Int32 pp, i, j, vec;
|
||||
|
||||
pp = 0;
|
||||
for (i = minLen; i <= maxLen; i++)
|
||||
for (j = 0; j < alphaSize; j++)
|
||||
if (length[j] == i) { perm[pp] = j; pp++; };
|
||||
|
||||
for (i = 0; i < BZ_MAX_CODE_LEN; i++) base[i] = 0;
|
||||
for (i = 0; i < alphaSize; i++) base[length[i]+1]++;
|
||||
|
||||
for (i = 1; i < BZ_MAX_CODE_LEN; i++) base[i] += base[i-1];
|
||||
|
||||
for (i = 0; i < BZ_MAX_CODE_LEN; i++) limit[i] = 0;
|
||||
vec = 0;
|
||||
|
||||
for (i = minLen; i <= maxLen; i++) {
|
||||
vec += (base[i+1] - base[i]);
|
||||
limit[i] = vec-1;
|
||||
vec <<= 1;
|
||||
}
|
||||
for (i = minLen + 1; i <= maxLen; i++)
|
||||
base[i] = ((limit[i-1] + 1) << 1) - base[i];
|
||||
}
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end huffman.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
|
@ -1,84 +0,0 @@
|
|||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Table for randomising repetitive blocks ---*/
|
||||
/*--- randtable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/* ------------------------------------------------------------------
|
||||
This file is part of bzip2/libbzip2, a program and library for
|
||||
lossless, block-sorting data compression.
|
||||
|
||||
bzip2/libbzip2 version 1.0.5 of 10 December 2007
|
||||
Copyright (C) 1996-2007 Julian Seward <jseward@bzip.org>
|
||||
|
||||
Please read the WARNING, DISCLAIMER and PATENTS sections in the
|
||||
README file.
|
||||
|
||||
This program is released under the terms of the license contained
|
||||
in the file LICENSE.
|
||||
------------------------------------------------------------------ */
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
|
||||
/*---------------------------------------------*/
|
||||
Int32 BZ2_rNums[512] = {
|
||||
619, 720, 127, 481, 931, 816, 813, 233, 566, 247,
|
||||
985, 724, 205, 454, 863, 491, 741, 242, 949, 214,
|
||||
733, 859, 335, 708, 621, 574, 73, 654, 730, 472,
|
||||
419, 436, 278, 496, 867, 210, 399, 680, 480, 51,
|
||||
878, 465, 811, 169, 869, 675, 611, 697, 867, 561,
|
||||
862, 687, 507, 283, 482, 129, 807, 591, 733, 623,
|
||||
150, 238, 59, 379, 684, 877, 625, 169, 643, 105,
|
||||
170, 607, 520, 932, 727, 476, 693, 425, 174, 647,
|
||||
73, 122, 335, 530, 442, 853, 695, 249, 445, 515,
|
||||
909, 545, 703, 919, 874, 474, 882, 500, 594, 612,
|
||||
641, 801, 220, 162, 819, 984, 589, 513, 495, 799,
|
||||
161, 604, 958, 533, 221, 400, 386, 867, 600, 782,
|
||||
382, 596, 414, 171, 516, 375, 682, 485, 911, 276,
|
||||
98, 553, 163, 354, 666, 933, 424, 341, 533, 870,
|
||||
227, 730, 475, 186, 263, 647, 537, 686, 600, 224,
|
||||
469, 68, 770, 919, 190, 373, 294, 822, 808, 206,
|
||||
184, 943, 795, 384, 383, 461, 404, 758, 839, 887,
|
||||
715, 67, 618, 276, 204, 918, 873, 777, 604, 560,
|
||||
951, 160, 578, 722, 79, 804, 96, 409, 713, 940,
|
||||
652, 934, 970, 447, 318, 353, 859, 672, 112, 785,
|
||||
645, 863, 803, 350, 139, 93, 354, 99, 820, 908,
|
||||
609, 772, 154, 274, 580, 184, 79, 626, 630, 742,
|
||||
653, 282, 762, 623, 680, 81, 927, 626, 789, 125,
|
||||
411, 521, 938, 300, 821, 78, 343, 175, 128, 250,
|
||||
170, 774, 972, 275, 999, 639, 495, 78, 352, 126,
|
||||
857, 956, 358, 619, 580, 124, 737, 594, 701, 612,
|
||||
669, 112, 134, 694, 363, 992, 809, 743, 168, 974,
|
||||
944, 375, 748, 52, 600, 747, 642, 182, 862, 81,
|
||||
344, 805, 988, 739, 511, 655, 814, 334, 249, 515,
|
||||
897, 955, 664, 981, 649, 113, 974, 459, 893, 228,
|
||||
433, 837, 553, 268, 926, 240, 102, 654, 459, 51,
|
||||
686, 754, 806, 760, 493, 403, 415, 394, 687, 700,
|
||||
946, 670, 656, 610, 738, 392, 760, 799, 887, 653,
|
||||
978, 321, 576, 617, 626, 502, 894, 679, 243, 440,
|
||||
680, 879, 194, 572, 640, 724, 926, 56, 204, 700,
|
||||
707, 151, 457, 449, 797, 195, 791, 558, 945, 679,
|
||||
297, 59, 87, 824, 713, 663, 412, 693, 342, 606,
|
||||
134, 108, 571, 364, 631, 212, 174, 643, 304, 329,
|
||||
343, 97, 430, 751, 497, 314, 983, 374, 822, 928,
|
||||
140, 206, 73, 263, 980, 736, 876, 478, 430, 305,
|
||||
170, 514, 364, 692, 829, 82, 855, 953, 676, 246,
|
||||
369, 970, 294, 750, 807, 827, 150, 790, 288, 923,
|
||||
804, 378, 215, 828, 592, 281, 565, 555, 710, 82,
|
||||
896, 831, 547, 261, 524, 462, 293, 465, 502, 56,
|
||||
661, 821, 976, 991, 658, 869, 905, 758, 745, 193,
|
||||
768, 550, 608, 933, 378, 286, 215, 979, 792, 961,
|
||||
61, 688, 793, 644, 986, 403, 106, 366, 905, 644,
|
||||
372, 567, 466, 434, 645, 210, 389, 550, 919, 135,
|
||||
780, 773, 635, 389, 707, 100, 626, 958, 165, 504,
|
||||
920, 176, 193, 713, 857, 265, 203, 50, 668, 108,
|
||||
645, 990, 626, 197, 510, 357, 358, 850, 858, 364,
|
||||
936, 638
|
||||
};
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end randtable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
Loading…
Reference in a new issue