Patch by Yuli Barcohen, 14 Aug 2003:
add support for bzip2 uncompression
This commit is contained in:
parent
ca75added1
commit
c29fdfc1d8
@ -2,6 +2,12 @@
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Changes for U-Boot 0.4.7:
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======================================================================
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* Patch by Yuli Barcohen, 14 Aug 2003:
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add support for bzip2 uncompression
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* Add GCC library to examples/Makefile so GCC utility functions will
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be resolved, too
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* Add I2C and RTC support for RMU board using software I2C driver
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(because of better response to iprobe command); fix problem with
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"reset" command
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13
README
13
README
@ -859,6 +859,16 @@ The following options need to be configured:
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allows for a "silent" boot where a splash screen is
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loaded very quickly after power-on.
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- Compression support:
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CONFIG_BZIP2
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If this option is set, support for bzip2 compressed
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images is included. If not, only uncompressed and gzip
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compressed images are supported.
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NOTE: the bzip2 algorithm requires a lot of RAM, so
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the malloc area (as defined by CFG_MALLOC_LEN) should
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be at least 4MB.
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- Ethernet address:
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CONFIG_ETHADDR
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@ -2263,8 +2273,7 @@ defines the following image properties:
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* Target CPU Architecture (Provisions for Alpha, ARM, Intel x86,
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IA64, MIPS, MIPS, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit;
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Currently supported: PowerPC).
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* Compression Type (Provisions for uncompressed, gzip, bzip2;
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Currently supported: uncompressed, gzip).
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* Compression Type (uncompressed, gzip, bzip2)
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* Load Address
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* Entry Point
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* Image Name
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@ -30,6 +30,7 @@
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#include <image.h>
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#include <malloc.h>
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#include <zlib.h>
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#include <bzlib.h>
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#include <environment.h>
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#include <asm/byteorder.h>
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@ -142,6 +143,7 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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ulong addr;
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ulong data, len, checksum;
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ulong *len_ptr;
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uint unc_len = 0x400000;
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int i, verify;
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char *name, *s;
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int (*appl)(cmd_tbl_t *, int, int, char *[]);
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@ -307,13 +309,26 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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break;
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case IH_COMP_GZIP:
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printf (" Uncompressing %s ... ", name);
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if (gunzip ((void *)ntohl(hdr->ih_load), 0x400000,
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if (gunzip ((void *)ntohl(hdr->ih_load), unc_len,
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(uchar *)data, (int *)&len) != 0) {
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printf ("GUNZIP ERROR - must RESET board to recover\n");
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SHOW_BOOT_PROGRESS (-6);
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do_reset (cmdtp, flag, argc, argv);
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}
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break;
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#ifdef CONFIG_BZIP2
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case IH_COMP_BZIP2:
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printf (" Uncompressing %s ... ", name);
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i = BZ2_bzBuffToBuffDecompress ((char*)ntohl(hdr->ih_load),
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&unc_len, (char *)data, len, 0, 0);
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if (i != BZ_OK) {
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printf ("BUNZIP2 ERROR %d - must RESET board to recover\n", i);
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SHOW_BOOT_PROGRESS (-6);
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udelay(100000);
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do_reset (cmdtp, flag, argc, argv);
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}
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break;
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#endif /* CONFIG_BZIP2 */
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default:
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if (iflag)
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enable_interrupts();
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@ -1206,6 +1221,13 @@ int gunzip(void *dst, int dstlen, unsigned char *src, int *lenp)
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return (0);
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}
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#ifdef CONFIG_BZIP2
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void bz_internal_error(int errcode)
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{
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printf ("BZIP2 internal error %d\n", errcode);
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}
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#endif /* CONFIG_BZIP2 */
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static void
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do_bootm_rtems (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
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ulong addr, ulong *len_ptr, int verify)
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@ -79,6 +79,8 @@ endif
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LIBCOBJS= stubs.o
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LIBOBJS = $(LIBAOBJS) $(LIBCOBJS)
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gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`)
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CPPFLAGS += -I..
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all: .depend $(LIB) $(SREC) $(BIN)
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@ -88,7 +90,8 @@ $(LIB): .depend $(LIBOBJS)
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$(AR) crv $@ $(LIBOBJS)
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%.srec: %.o $(LIB)
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$(LD) -g -Ttext $(LOAD_ADDR) -o $(<:.o=) -e $(<:.o=) $< $(LIB)
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$(LD) -g -Ttext $(LOAD_ADDR) -o $(<:.o=) -e $(<:.o=) $< $(LIB) \
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-L$(gcclibdir) -lgcc
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$(OBJCOPY) -O srec $(<:.o=) $@
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%.bin: %.srec
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330
include/bzlib.h
Normal file
330
include/bzlib.h
Normal file
@ -0,0 +1,330 @@
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/*
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* This file is a modified version of bzlib.h from the bzip2-1.0.2
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* distribution which can be found at http://sources.redhat.com/bzip2/
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*/
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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 a part of bzip2 and/or libbzip2, a program and
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library for lossless, block-sorting data compression.
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Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. The origin of this software must not be misrepresented; you must
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not claim that you wrote the original software. If you use this
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software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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3. Altered source versions must be plainly marked as such, and must
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not be misrepresented as being the original software.
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4. The name of the author may not be used to endorse or promote
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products derived from this software without specific prior written
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permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Julian Seward, Cambridge, UK.
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jseward@acm.org
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bzip2/libbzip2 version 1.0 of 21 March 2000
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This program is based on (at least) the work of:
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Mike Burrows
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David Wheeler
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Peter Fenwick
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Alistair Moffat
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Radford Neal
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Ian H. Witten
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Robert Sedgewick
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Jon L. Bentley
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For more information on these sources, see the manual.
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--*/
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#ifndef _BZLIB_H
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#define _BZLIB_H
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/* Configure for U-Boot environment */
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#define BZ_NO_STDIO
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#define BZ_NO_COMPRESS
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/* End of configuration for U-Boot environment */
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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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#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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/* Need a definitition for FILE */
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#include <stdio.h>
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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
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(QWF00133@niftyserve.or.jp/tsuneo-y@is.aist-nara.ac.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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/*-------------------------------------------------------------*/
|
@ -25,7 +25,10 @@ include $(TOPDIR)/config.mk
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LIB = libgeneric.a
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OBJS = crc32.o ctype.o display_options.o ldiv.o string.o vsprintf.o zlib.o
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OBJS = bzlib.o bzlib_crctable.o bzlib_decompress.o \
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bzlib_randtable.o bzlib_huffman.o \
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crc32.o ctype.o display_options.o ldiv.o \
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string.o vsprintf.o zlib.o
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$(LIB): .depend $(OBJS)
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$(AR) crv $@ $(OBJS)
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|
1597
lib_generic/bzlib.c
Normal file
1597
lib_generic/bzlib.c
Normal file
File diff suppressed because it is too large
Load Diff
148
lib_generic/bzlib_crctable.c
Normal file
148
lib_generic/bzlib_crctable.c
Normal file
@ -0,0 +1,148 @@
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#include <config.h>
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#ifdef CONFIG_BZIP2
|
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|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Table for doing CRCs ---*/
|
||||
/*--- crctable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/*--
|
||||
This file is a part of bzip2 and/or libbzip2, a program and
|
||||
library for lossless, block-sorting data compression.
|
||||
|
||||
Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
2. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product
|
||||
documentation would be appreciated but is not required.
|
||||
|
||||
3. Altered source versions must be plainly marked as such, and must
|
||||
not be misrepresented as being the original software.
|
||||
|
||||
4. The name of the author may not be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
Julian Seward, Cambridge, UK.
|
||||
jseward@acm.org
|
||||
bzip2/libbzip2 version 1.0 of 21 March 2000
|
||||
|
||||
This program is based on (at least) the work of:
|
||||
Mike Burrows
|
||||
David Wheeler
|
||||
Peter Fenwick
|
||||
Alistair Moffat
|
||||
Radford Neal
|
||||
Ian H. Witten
|
||||
Robert Sedgewick
|
||||
Jon L. Bentley
|
||||
|
||||
For more information on these sources, see the manual.
|
||||
--*/
|
||||
|
||||
|
||||
#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 ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
#endif /* CONFIG_BZIP2 */
|
664
lib_generic/bzlib_decompress.c
Normal file
664
lib_generic/bzlib_decompress.c
Normal file
@ -0,0 +1,664 @@
|
||||
#include <config.h>
|
||||
#ifdef CONFIG_BZIP2
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Decompression machinery ---*/
|
||||
/*--- decompress.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/*--
|
||||
This file is a part of bzip2 and/or libbzip2, a program and
|
||||
library for lossless, block-sorting data compression.
|
||||
|
||||
Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
2. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product
|
||||
documentation would be appreciated but is not required.
|
||||
|
||||
3. Altered source versions must be plainly marked as such, and must
|
||||
not be misrepresented as being the original software.
|
||||
|
||||
4. The name of the author may not be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
Julian Seward, Cambridge, UK.
|
||||
jseward@acm.org
|
||||
bzip2/libbzip2 version 1.0 of 21 March 2000
|
||||
|
||||
This program is based on (at least) the work of:
|
||||
Mike Burrows
|
||||
David Wheeler
|
||||
Peter Fenwick
|
||||
Alistair Moffat
|
||||
Radford Neal
|
||||
Ian H. Witten
|
||||
Robert Sedgewick
|
||||
Jon L. Bentley
|
||||
|
||||
For more information on these sources, see the manual.
|
||||
--*/
|
||||
|
||||
|
||||
#include "bzlib_private.h"
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
static
|
||||
void makeMaps_d ( DState* s )
|
||||
{
|
||||
Int32 i;
|
||||
s->nInUse = 0;
|
||||
for (i = 0; i < 256; i++)
|
||||
if (s->inUse[i]) {
|
||||
s->seqToUnseq[s->nInUse] = i;
|
||||
s->nInUse++;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define RETURN(rrr) \
|
||||
{ retVal = rrr; goto save_state_and_return; };
|
||||
|
||||
#define GET_BITS(lll,vvv,nnn) \
|
||||
case lll: s->state = lll; \
|
||||
while (True) { \
|
||||
if (s->bsLive >= nnn) { \
|
||||
UInt32 v; \
|
||||
v = (s->bsBuff >> \
|
||||
(s->bsLive-nnn)) & ((1 << nnn)-1); \
|
||||
s->bsLive -= nnn; \
|
||||
vvv = v; \
|
||||
break; \
|
||||
} \
|
||||
if (s->strm->avail_in == 0) RETURN(BZ_OK); \
|
||||
s->bsBuff \
|
||||
= (s->bsBuff << 8) | \
|
||||
((UInt32) \
|
||||
(*((UChar*)(s->strm->next_in)))); \
|
||||
s->bsLive += 8; \
|
||||
s->strm->next_in++; \
|
||||
s->strm->avail_in--; \
|
||||
s->strm->total_in_lo32++; \
|
||||
if (s->strm->total_in_lo32 == 0) \
|
||||
s->strm->total_in_hi32++; \
|
||||
}
|
||||
|
||||
#define GET_UCHAR(lll,uuu) \
|
||||
GET_BITS(lll,uuu,8)
|
||||
|
||||
#define GET_BIT(lll,uuu) \
|
||||
GET_BITS(lll,uuu,1)
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
#define GET_MTF_VAL(label1,label2,lval) \
|
||||
{ \
|
||||
if (groupPos == 0) { \
|
||||
groupNo++; \
|
||||
if (groupNo >= nSelectors) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
groupPos = BZ_G_SIZE; \
|
||||
gSel = s->selector[groupNo]; \
|
||||
gMinlen = s->minLens[gSel]; \
|
||||
gLimit = &(s->limit[gSel][0]); \
|
||||
gPerm = &(s->perm[gSel][0]); \
|
||||
gBase = &(s->base[gSel][0]); \
|
||||
} \
|
||||
groupPos--; \
|
||||
zn = gMinlen; \
|
||||
GET_BITS(label1, zvec, zn); \
|
||||
while (1) { \
|
||||
if (zn > 20 /* the longest code */) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
if (zvec <= gLimit[zn]) break; \
|
||||
zn++; \
|
||||
GET_BIT(label2, zj); \
|
||||
zvec = (zvec << 1) | zj; \
|
||||
}; \
|
||||
if (zvec - gBase[zn] < 0 \
|
||||
|| zvec - gBase[zn] >= BZ_MAX_ALPHA_SIZE) \
|
||||
RETURN(BZ_DATA_ERROR); \
|
||||
lval = gPerm[zvec - gBase[zn]]; \
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------*/
|
||||
Int32 BZ2_decompress ( DState* s )
|
||||
{
|
||||
UChar uc;
|
||||
Int32 retVal;
|
||||
Int32 minLen, maxLen;
|
||||
bz_stream* strm = s->strm;
|
||||
|
||||
/* stuff that needs to be saved/restored */
|
||||
Int32 i;
|
||||
Int32 j;
|
||||
Int32 t;
|
||||
Int32 alphaSize;
|
||||
Int32 nGroups;
|
||||
Int32 nSelectors;
|
||||
Int32 EOB;
|
||||
Int32 groupNo;
|
||||
Int32 groupPos;
|
||||
Int32 nextSym;
|
||||
Int32 nblockMAX;
|
||||
Int32 nblock;
|
||||
Int32 es;
|
||||
Int32 N;
|
||||
Int32 curr;
|
||||
Int32 zt;
|
||||
Int32 zn;
|
||||
Int32 zvec;
|
||||
Int32 zj;
|
||||
Int32 gSel;
|
||||
Int32 gMinlen;
|
||||
Int32* gLimit;
|
||||
Int32* gBase;
|
||||
Int32* gPerm;
|
||||
|
||||
if (s->state == BZ_X_MAGIC_1) {
|
||||
/*initialise the save area*/
|
||||
s->save_i = 0;
|
||||
s->save_j = 0;
|
||||
s->save_t = 0;
|
||||
s->save_alphaSize = 0;
|
||||
s->save_nGroups = 0;
|
||||
s->save_nSelectors = 0;
|
||||
s->save_EOB = 0;
|
||||
s->save_groupNo = 0;
|
||||
s->save_groupPos = 0;
|
||||
s->save_nextSym = 0;
|
||||
s->save_nblockMAX = 0;
|
||||
s->save_nblock = 0;
|
||||
s->save_es = 0;
|
||||
s->save_N = 0;
|
||||
s->save_curr = 0;
|
||||
s->save_zt = 0;
|
||||
s->save_zn = 0;
|
||||
s->save_zvec = 0;
|
||||
s->save_zj = 0;
|
||||
s->save_gSel = 0;
|
||||
s->save_gMinlen = 0;
|
||||
s->save_gLimit = NULL;
|
||||
s->save_gBase = NULL;
|
||||
s->save_gPerm = NULL;
|
||||
}
|
||||
|
||||
/*restore from the save area*/
|
||||
i = s->save_i;
|
||||
j = s->save_j;
|
||||
t = s->save_t;
|
||||
alphaSize = s->save_alphaSize;
|
||||
nGroups = s->save_nGroups;
|
||||
nSelectors = s->save_nSelectors;
|
||||
EOB = s->save_EOB;
|
||||
groupNo = s->save_groupNo;
|
||||
groupPos = s->save_groupPos;
|
||||
nextSym = s->save_nextSym;
|
||||
nblockMAX = s->save_nblockMAX;
|
||||
nblock = s->save_nblock;
|
||||
es = s->save_es;
|
||||
N = s->save_N;
|
||||
curr = s->save_curr;
|
||||
zt = s->save_zt;
|
||||
zn = s->save_zn;
|
||||
zvec = s->save_zvec;
|
||||
zj = s->save_zj;
|
||||
gSel = s->save_gSel;
|
||||
gMinlen = s->save_gMinlen;
|
||||
gLimit = s->save_gLimit;
|
||||
gBase = s->save_gBase;
|
||||
gPerm = s->save_gPerm;
|
||||
|
||||
retVal = BZ_OK;
|
||||
|
||||
switch (s->state) {
|
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_1, uc);
|
||||
if (uc != BZ_HDR_B) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_2, uc);
|
||||
if (uc != BZ_HDR_Z) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
|
||||
GET_UCHAR(BZ_X_MAGIC_3, uc)
|
||||
if (uc != BZ_HDR_h) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
|
||||
GET_BITS(BZ_X_MAGIC_4, s->blockSize100k, 8)
|
||||
if (s->blockSize100k < (BZ_HDR_0 + 1) ||
|
||||
s->blockSize100k > (BZ_HDR_0 + 9)) RETURN(BZ_DATA_ERROR_MAGIC);
|
||||
s->blockSize100k -= BZ_HDR_0;
|
||||
|
||||
if (s->smallDecompress) {
|
||||
s->ll16 = BZALLOC( s->blockSize100k * 100000 * sizeof(UInt16) );
|
||||
s->ll4 = BZALLOC(
|
||||
((1 + s->blockSize100k * 100000) >> 1) * sizeof(UChar)
|
||||
);
|
||||
if (s->ll16 == NULL || s->ll4 == NULL) RETURN(BZ_MEM_ERROR);
|
||||
} else {
|
||||
s->tt = BZALLOC( s->blockSize100k * 100000 * sizeof(Int32) );
|
||||
if (s->tt == NULL) RETURN(BZ_MEM_ERROR);
|
||||
}
|
||||
|
||||
GET_UCHAR(BZ_X_BLKHDR_1, uc);
|
||||
|
||||
if (uc == 0x17) goto endhdr_2;
|
||||
if (uc != 0x31) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_2, uc);
|
||||
if (uc != 0x41) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_3, uc);
|
||||
if (uc != 0x59) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_4, uc);
|
||||
if (uc != 0x26) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_5, uc);
|
||||
if (uc != 0x53) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_BLKHDR_6, uc);
|
||||
if (uc != 0x59) RETURN(BZ_DATA_ERROR);
|
||||
|
||||
s->currBlockNo++;
|
||||
if (s->verbosity >= 2)
|
||||
VPrintf1 ( "\n [%d: huff+mtf ", s->currBlockNo );
|
||||
|
||||
s->storedBlockCRC = 0;
|
||||
GET_UCHAR(BZ_X_BCRC_1, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_BCRC_2, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_BCRC_3, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_BCRC_4, uc);
|
||||
s->storedBlockCRC = (s->storedBlockCRC << 8) | ((UInt32)uc);
|
||||
|
||||
GET_BITS(BZ_X_RANDBIT, s->blockRandomised, 1);
|
||||
|
||||
s->origPtr = 0;
|
||||
GET_UCHAR(BZ_X_ORIGPTR_1, uc);
|
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc);
|
||||
GET_UCHAR(BZ_X_ORIGPTR_2, uc);
|
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc);
|
||||
GET_UCHAR(BZ_X_ORIGPTR_3, uc);
|
||||
s->origPtr = (s->origPtr << 8) | ((Int32)uc);
|
||||
|
||||
if (s->origPtr < 0)
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
if (s->origPtr > 10 + 100000*s->blockSize100k)
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
|
||||
/*--- Receive the mapping table ---*/
|
||||
for (i = 0; i < 16; i++) {
|
||||
GET_BIT(BZ_X_MAPPING_1, uc);
|
||||
if (uc == 1)
|
||||
s->inUse16[i] = True; else
|
||||
s->inUse16[i] = False;
|
||||
}
|
||||
|
||||
for (i = 0; i < 256; i++) s->inUse[i] = False;
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
if (s->inUse16[i])
|
||||
for (j = 0; j < 16; j++) {
|
||||
GET_BIT(BZ_X_MAPPING_2, uc);
|
||||
if (uc == 1) s->inUse[i * 16 + j] = True;
|
||||
}
|
||||
makeMaps_d ( s );
|
||||
if (s->nInUse == 0) RETURN(BZ_DATA_ERROR);
|
||||
alphaSize = s->nInUse+2;
|
||||
|
||||
/*--- Now the selectors ---*/
|
||||
GET_BITS(BZ_X_SELECTOR_1, nGroups, 3);
|
||||
if (nGroups < 2 || nGroups > 6) RETURN(BZ_DATA_ERROR);
|
||||
GET_BITS(BZ_X_SELECTOR_2, nSelectors, 15);
|
||||
if (nSelectors < 1) RETURN(BZ_DATA_ERROR);
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
j = 0;
|
||||
while (True) {
|
||||
GET_BIT(BZ_X_SELECTOR_3, uc);
|
||||
if (uc == 0) break;
|
||||
j++;
|
||||
if (j >= nGroups) RETURN(BZ_DATA_ERROR);
|
||||
}
|
||||
s->selectorMtf[i] = j;
|
||||
}
|
||||
|
||||
/*--- Undo the MTF values for the selectors. ---*/
|
||||
{
|
||||
UChar pos[BZ_N_GROUPS], tmp, v;
|
||||
for (v = 0; v < nGroups; v++) pos[v] = v;
|
||||
|
||||
for (i = 0; i < nSelectors; i++) {
|
||||
v = s->selectorMtf[i];
|
||||
tmp = pos[v];
|
||||
while (v > 0) { pos[v] = pos[v-1]; v--; }
|
||||
pos[0] = tmp;
|
||||
s->selector[i] = tmp;
|
||||
}
|
||||
}
|
||||
|
||||
/*--- Now the coding tables ---*/
|
||||
for (t = 0; t < nGroups; t++) {
|
||||
GET_BITS(BZ_X_CODING_1, curr, 5);
|
||||
for (i = 0; i < alphaSize; i++) {
|
||||
while (True) {
|
||||
if (curr < 1 || curr > 20) RETURN(BZ_DATA_ERROR);
|
||||
GET_BIT(BZ_X_CODING_2, uc);
|
||||
if (uc == 0) break;
|
||||
GET_BIT(BZ_X_CODING_3, uc);
|
||||
if (uc == 0) curr++; else curr--;
|
||||
}
|
||||
s->len[t][i] = curr;
|
||||
}
|
||||
}
|
||||
|
||||
/*--- Create the Huffman decoding 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];
|
||||
}
|
||||
BZ2_hbCreateDecodeTables (
|
||||
&(s->limit[t][0]),
|
||||
&(s->base[t][0]),
|
||||
&(s->perm[t][0]),
|
||||
&(s->len[t][0]),
|
||||
minLen, maxLen, alphaSize
|
||||
);
|
||||
s->minLens[t] = minLen;
|
||||
}
|
||||
|
||||
/*--- Now the MTF values ---*/
|
||||
|
||||
EOB = s->nInUse+1;
|
||||
nblockMAX = 100000 * s->blockSize100k;
|
||||
groupNo = -1;
|
||||
groupPos = 0;
|
||||
|
||||
for (i = 0; i <= 255; i++) s->unzftab[i] = 0;
|
||||
|
||||
/*-- MTF init --*/
|
||||
{
|
||||
Int32 ii, jj, kk;
|
||||
kk = MTFA_SIZE-1;
|
||||
for (ii = 256 / MTFL_SIZE - 1; ii >= 0; ii--) {
|
||||
for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
|
||||
s->mtfa[kk] = (UChar)(ii * MTFL_SIZE + jj);
|
||||
kk--;
|
||||
}
|
||||
s->mtfbase[ii] = kk + 1;
|
||||
}
|
||||
}
|
||||
/*-- end MTF init --*/
|
||||
|
||||
nblock = 0;
|
||||
GET_MTF_VAL(BZ_X_MTF_1, BZ_X_MTF_2, nextSym);
|
||||
|
||||
while (True) {
|
||||
|
||||
if (nextSym == EOB) break;
|
||||
|
||||
if (nextSym == BZ_RUNA || nextSym == BZ_RUNB) {
|
||||
|
||||
es = -1;
|
||||
N = 1;
|
||||
do {
|
||||
if (nextSym == BZ_RUNA) es = es + (0+1) * N; else
|
||||
if (nextSym == BZ_RUNB) es = es + (1+1) * N;
|
||||
N = N * 2;
|
||||
GET_MTF_VAL(BZ_X_MTF_3, BZ_X_MTF_4, nextSym);
|
||||
}
|
||||
while (nextSym == BZ_RUNA || nextSym == BZ_RUNB);
|
||||
|
||||
es++;
|
||||
uc = s->seqToUnseq[ s->mtfa[s->mtfbase[0]] ];
|
||||
s->unzftab[uc] += es;
|
||||
|
||||
if (s->smallDecompress)
|
||||
while (es > 0) {
|
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
|
||||
s->ll16[nblock] = (UInt16)uc;
|
||||
nblock++;
|
||||
es--;
|
||||
}
|
||||
else
|
||||
while (es > 0) {
|
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
|
||||
s->tt[nblock] = (UInt32)uc;
|
||||
nblock++;
|
||||
es--;
|
||||
};
|
||||
|
||||
continue;
|
||||
|
||||
} else {
|
||||
|
||||
if (nblock >= nblockMAX) RETURN(BZ_DATA_ERROR);
|
||||
|
||||
/*-- uc = MTF ( nextSym-1 ) --*/
|
||||
{
|
||||
Int32 ii, jj, kk, pp, lno, off;
|
||||
UInt32 nn;
|
||||
nn = (UInt32)(nextSym - 1);
|
||||
|
||||
if (nn < MTFL_SIZE) {
|
||||
/* avoid general-case expense */
|
||||
pp = s->mtfbase[0];
|
||||
uc = s->mtfa[pp+nn];
|
||||
while (nn > 3) {
|
||||
Int32 z = pp+nn;
|
||||
s->mtfa[(z) ] = s->mtfa[(z)-1];
|
||||
s->mtfa[(z)-1] = s->mtfa[(z)-2];
|
||||
s->mtfa[(z)-2] = s->mtfa[(z)-3];
|
||||
s->mtfa[(z)-3] = s->mtfa[(z)-4];
|
||||
nn -= 4;
|
||||
}
|
||||
while (nn > 0) {
|
||||
s->mtfa[(pp+nn)] = s->mtfa[(pp+nn)-1]; nn--;
|
||||
};
|
||||
s->mtfa[pp] = uc;
|
||||
} else {
|
||||
/* general case */
|
||||
lno = nn / MTFL_SIZE;
|
||||
off = nn % MTFL_SIZE;
|
||||
pp = s->mtfbase[lno] + off;
|
||||
uc = s->mtfa[pp];
|
||||
while (pp > s->mtfbase[lno]) {
|
||||
s->mtfa[pp] = s->mtfa[pp-1]; pp--;
|
||||
};
|
||||
s->mtfbase[lno]++;
|
||||
while (lno > 0) {
|
||||
s->mtfbase[lno]--;
|
||||
s->mtfa[s->mtfbase[lno]]
|
||||
= s->mtfa[s->mtfbase[lno-1] + MTFL_SIZE - 1];
|
||||
lno--;
|
||||
}
|
||||
s->mtfbase[0]--;
|
||||
s->mtfa[s->mtfbase[0]] = uc;
|
||||
if (s->mtfbase[0] == 0) {
|
||||
kk = MTFA_SIZE-1;
|
||||
for (ii = 256 / MTFL_SIZE-1; ii >= 0; ii--) {
|
||||
for (jj = MTFL_SIZE-1; jj >= 0; jj--) {
|
||||
s->mtfa[kk] = s->mtfa[s->mtfbase[ii] + jj];
|
||||
kk--;
|
||||
}
|
||||
s->mtfbase[ii] = kk + 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
/*-- end uc = MTF ( nextSym-1 ) --*/
|
||||
|
||||
s->unzftab[s->seqToUnseq[uc]]++;
|
||||
if (s->smallDecompress)
|
||||
s->ll16[nblock] = (UInt16)(s->seqToUnseq[uc]); else
|
||||
s->tt[nblock] = (UInt32)(s->seqToUnseq[uc]);
|
||||
nblock++;
|
||||
|
||||
GET_MTF_VAL(BZ_X_MTF_5, BZ_X_MTF_6, nextSym);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
/* Now we know what nblock is, we can do a better sanity
|
||||
check on s->origPtr.
|
||||
*/
|
||||
if (s->origPtr < 0 || s->origPtr >= nblock)
|
||||
RETURN(BZ_DATA_ERROR);
|
||||
|
||||
s->state_out_len = 0;
|
||||
s->state_out_ch = 0;
|
||||
BZ_INITIALISE_CRC ( s->calculatedBlockCRC );
|
||||
s->state = BZ_X_OUTPUT;
|
||||
if (s->verbosity >= 2) VPrintf0 ( "rt+rld" );
|
||||
|
||||
/*-- Set up cftab to facilitate generation of T^(-1) --*/
|
||||
s->cftab[0] = 0;
|
||||
for (i = 1; i <= 256; i++) s->cftab[i] = s->unzftab[i-1];
|
||||
for (i = 1; i <= 256; i++) s->cftab[i] += s->cftab[i-1];
|
||||
|
||||
if (s->smallDecompress) {
|
||||
|
||||
/*-- Make a copy of cftab, used in generation of T --*/
|
||||
for (i = 0; i <= 256; i++) s->cftabCopy[i] = s->cftab[i];
|
||||
|
||||
/*-- compute the T vector --*/
|
||||
for (i = 0; i < nblock; i++) {
|
||||
uc = (UChar)(s->ll16[i]);
|
||||
SET_LL(i, s->cftabCopy[uc]);
|
||||
s->cftabCopy[uc]++;
|
||||
}
|
||||
|
||||
/*-- Compute T^(-1) by pointer reversal on T --*/
|
||||
i = s->origPtr;
|
||||
j = GET_LL(i);
|
||||
do {
|
||||
Int32 tmp = GET_LL(j);
|
||||
SET_LL(j, i);
|
||||
i = j;
|
||||
j = tmp;
|
||||
}
|
||||
while (i != s->origPtr);
|
||||
|
||||
s->tPos = s->origPtr;
|
||||
s->nblock_used = 0;
|
||||
if (s->blockRandomised) {
|
||||
BZ_RAND_INIT_MASK;
|
||||
BZ_GET_SMALL(s->k0); s->nblock_used++;
|
||||
BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
|
||||
} else {
|
||||
BZ_GET_SMALL(s->k0); s->nblock_used++;
|
||||
}
|
||||
|
||||
} else {
|
||||
|
||||
/*-- compute the T^(-1) vector --*/
|
||||
for (i = 0; i < nblock; i++) {
|
||||
uc = (UChar)(s->tt[i] & 0xff);
|
||||
s->tt[s->cftab[uc]] |= (i << 8);
|
||||
s->cftab[uc]++;
|
||||
}
|
||||
|
||||
s->tPos = s->tt[s->origPtr] >> 8;
|
||||
s->nblock_used = 0;
|
||||
if (s->blockRandomised) {
|
||||
BZ_RAND_INIT_MASK;
|
||||
BZ_GET_FAST(s->k0); s->nblock_used++;
|
||||
BZ_RAND_UPD_MASK; s->k0 ^= BZ_RAND_MASK;
|
||||
} else {
|
||||
BZ_GET_FAST(s->k0); s->nblock_used++;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
RETURN(BZ_OK);
|
||||
|
||||
|
||||
|
||||
endhdr_2:
|
||||
|
||||
GET_UCHAR(BZ_X_ENDHDR_2, uc);
|
||||
if (uc != 0x72) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_3, uc);
|
||||
if (uc != 0x45) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_4, uc);
|
||||
if (uc != 0x38) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_5, uc);
|
||||
if (uc != 0x50) RETURN(BZ_DATA_ERROR);
|
||||
GET_UCHAR(BZ_X_ENDHDR_6, uc);
|
||||
if (uc != 0x90) RETURN(BZ_DATA_ERROR);
|
||||
|
||||
s->storedCombinedCRC = 0;
|
||||
GET_UCHAR(BZ_X_CCRC_1, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_CCRC_2, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_CCRC_3, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
GET_UCHAR(BZ_X_CCRC_4, uc);
|
||||
s->storedCombinedCRC = (s->storedCombinedCRC << 8) | ((UInt32)uc);
|
||||
|
||||
s->state = BZ_X_IDLE;
|
||||
RETURN(BZ_STREAM_END);
|
||||
|
||||
default: AssertH ( False, 4001 );
|
||||
}
|
||||
|
||||
AssertH ( False, 4002 );
|
||||
|
||||
save_state_and_return:
|
||||
|
||||
s->save_i = i;
|
||||
s->save_j = j;
|
||||
s->save_t = t;
|
||||
s->save_alphaSize = alphaSize;
|
||||
s->save_nGroups = nGroups;
|
||||
s->save_nSelectors = nSelectors;
|
||||
s->save_EOB = EOB;
|
||||
s->save_groupNo = groupNo;
|
||||
s->save_groupPos = groupPos;
|
||||
s->save_nextSym = nextSym;
|
||||
s->save_nblockMAX = nblockMAX;
|
||||
s->save_nblock = nblock;
|
||||
s->save_es = es;
|
||||
s->save_N = N;
|
||||
s->save_curr = curr;
|
||||
s->save_zt = zt;
|
||||
s->save_zn = zn;
|
||||
s->save_zvec = zvec;
|
||||
s->save_zj = zj;
|
||||
s->save_gSel = gSel;
|
||||
s->save_gMinlen = gMinlen;
|
||||
s->save_gLimit = gLimit;
|
||||
s->save_gBase = gBase;
|
||||
s->save_gPerm = gPerm;
|
||||
|
||||
return retVal;
|
||||
}
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end decompress.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
#endif /* CONFIG_BZIP2 */
|
232
lib_generic/bzlib_huffman.c
Normal file
232
lib_generic/bzlib_huffman.c
Normal file
@ -0,0 +1,232 @@
|
||||
#include <config.h>
|
||||
#ifdef CONFIG_BZIP2
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Huffman coding low-level stuff ---*/
|
||||
/*--- huffman.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/*--
|
||||
This file is a part of bzip2 and/or libbzip2, a program and
|
||||
library for lossless, block-sorting data compression.
|
||||
|
||||
Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
2. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product
|
||||
documentation would be appreciated but is not required.
|
||||
|
||||
3. Altered source versions must be plainly marked as such, and must
|
||||
not be misrepresented as being the original software.
|
||||
|
||||
4. The name of the author may not be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
Julian Seward, Cambridge, UK.
|
||||
jseward@acm.org
|
||||
bzip2/libbzip2 version 1.0 of 21 March 2000
|
||||
|
||||
This program is based on (at least) the work of:
|
||||
Mike Burrows
|
||||
David Wheeler
|
||||
Peter Fenwick
|
||||
Alistair Moffat
|
||||
Radford Neal
|
||||
Ian H. Witten
|
||||
Robert Sedgewick
|
||||
Jon L. Bentley
|
||||
|
||||
For more information on these sources, see the manual.
|
||||
--*/
|
||||
|
||||
|
||||
#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;
|
||||
|
||||
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 ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
#endif /* CONFIG_BZIP2 */
|
541
lib_generic/bzlib_private.h
Normal file
541
lib_generic/bzlib_private.h
Normal file
@ -0,0 +1,541 @@
|
||||
/*
|
||||
* This file is a modified version of bzlib_private.h from the bzip2-1.0.2
|
||||
* distribution which can be found at http://sources.redhat.com/bzip2/
|
||||
*/
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Private header file for the library. ---*/
|
||||
/*--- bzlib_private.h ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/*--
|
||||
This file is a part of bzip2 and/or libbzip2, a program and
|
||||
library for lossless, block-sorting data compression.
|
||||
|
||||
Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
2. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product
|
||||
documentation would be appreciated but is not required.
|
||||
|
||||
3. Altered source versions must be plainly marked as such, and must
|
||||
not be misrepresented as being the original software.
|
||||
|
||||
4. The name of the author may not be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
Julian Seward, Cambridge, UK.
|
||||
jseward@acm.org
|
||||
bzip2/libbzip2 version 1.0 of 21 March 2000
|
||||
|
||||
This program is based on (at least) the work of:
|
||||
Mike Burrows
|
||||
David Wheeler
|
||||
Peter Fenwick
|
||||
Alistair Moffat
|
||||
Radford Neal
|
||||
Ian H. Witten
|
||||
Robert Sedgewick
|
||||
Jon L. Bentley
|
||||
|
||||
For more information on these sources, see the manual.
|
||||
--*/
|
||||
|
||||
|
||||
#ifndef _BZLIB_PRIVATE_H
|
||||
#define _BZLIB_PRIVATE_H
|
||||
|
||||
#include <malloc.h>
|
||||
|
||||
#include "bzlib.h"
|
||||
|
||||
#ifndef BZ_NO_STDIO
|
||||
#include <stdio.h>
|
||||
#include <ctype.h>
|
||||
#include <string.h>
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/*-- General stuff. --*/
|
||||
|
||||
#define BZ_VERSION "1.0.2, 30-Dec-2001"
|
||||
|
||||
typedef char Char;
|
||||
typedef unsigned char Bool;
|
||||
typedef unsigned char UChar;
|
||||
typedef int Int32;
|
||||
typedef unsigned int UInt32;
|
||||
typedef short Int16;
|
||||
typedef unsigned short UInt16;
|
||||
|
||||
#define True ((Bool)1)
|
||||
#define False ((Bool)0)
|
||||
|
||||
#ifndef __GNUC__
|
||||
#define __inline__ /* */
|
||||
#endif
|
||||
|
||||
#ifndef BZ_NO_STDIO
|
||||
extern void BZ2_bz__AssertH__fail ( int errcode );
|
||||
#define AssertH(cond,errcode) \
|
||||
{ if (!(cond)) BZ2_bz__AssertH__fail ( errcode ); }
|
||||
#if BZ_DEBUG
|
||||
#define AssertD(cond,msg) \
|
||||
{ if (!(cond)) { \
|
||||
fprintf ( stderr, \
|
||||
"\n\nlibbzip2(debug build): internal error\n\t%s\n", msg );\
|
||||
exit(1); \
|
||||
}}
|
||||
#else
|
||||
#define AssertD(cond,msg) /* */
|
||||
#endif
|
||||
#define VPrintf0(zf) \
|
||||
fprintf(stderr,zf)
|
||||
#define VPrintf1(zf,za1) \
|
||||
fprintf(stderr,zf,za1)
|
||||
#define VPrintf2(zf,za1,za2) \
|
||||
fprintf(stderr,zf,za1,za2)
|
||||
#define VPrintf3(zf,za1,za2,za3) \
|
||||
fprintf(stderr,zf,za1,za2,za3)
|
||||
#define VPrintf4(zf,za1,za2,za3,za4) \
|
||||
fprintf(stderr,zf,za1,za2,za3,za4)
|
||||
#define VPrintf5(zf,za1,za2,za3,za4,za5) \
|
||||
fprintf(stderr,zf,za1,za2,za3,za4,za5)
|
||||
#else
|
||||
extern void bz_internal_error ( int errcode );
|
||||
#define AssertH(cond,errcode) \
|
||||
{ if (!(cond)) bz_internal_error ( errcode ); }
|
||||
#define AssertD(cond,msg) /* */
|
||||
#define VPrintf0(zf) /* */
|
||||
#define VPrintf1(zf,za1) /* */
|
||||
#define VPrintf2(zf,za1,za2) /* */
|
||||
#define VPrintf3(zf,za1,za2,za3) /* */
|
||||
#define VPrintf4(zf,za1,za2,za3,za4) /* */
|
||||
#define VPrintf5(zf,za1,za2,za3,za4,za5) /* */
|
||||
#endif
|
||||
|
||||
|
||||
#define BZALLOC(nnn) (strm->bzalloc)(strm->opaque,(nnn),1)
|
||||
#define BZFREE(ppp) (strm->bzfree)(strm->opaque,(ppp))
|
||||
|
||||
|
||||
/*-- Header bytes. --*/
|
||||
|
||||
#define BZ_HDR_B 0x42 /* 'B' */
|
||||
#define BZ_HDR_Z 0x5a /* 'Z' */
|
||||
#define BZ_HDR_h 0x68 /* 'h' */
|
||||
#define BZ_HDR_0 0x30 /* '0' */
|
||||
|
||||
/*-- Constants for the back end. --*/
|
||||
|
||||
#define BZ_MAX_ALPHA_SIZE 258
|
||||
#define BZ_MAX_CODE_LEN 23
|
||||
|
||||
#define BZ_RUNA 0
|
||||
#define BZ_RUNB 1
|
||||
|
||||
#define BZ_N_GROUPS 6
|
||||
#define BZ_G_SIZE 50
|
||||
#define BZ_N_ITERS 4
|
||||
|
||||
#define BZ_MAX_SELECTORS (2 + (900000 / BZ_G_SIZE))
|
||||
|
||||
|
||||
|
||||
/*-- Stuff for randomising repetitive blocks. --*/
|
||||
|
||||
extern Int32 BZ2_rNums[512];
|
||||
|
||||
#define BZ_RAND_DECLS \
|
||||
Int32 rNToGo; \
|
||||
Int32 rTPos \
|
||||
|
||||
#define BZ_RAND_INIT_MASK \
|
||||
s->rNToGo = 0; \
|
||||
s->rTPos = 0 \
|
||||
|
||||
#define BZ_RAND_MASK ((s->rNToGo == 1) ? 1 : 0)
|
||||
|
||||
#define BZ_RAND_UPD_MASK \
|
||||
if (s->rNToGo == 0) { \
|
||||
s->rNToGo = BZ2_rNums[s->rTPos]; \
|
||||
s->rTPos++; \
|
||||
if (s->rTPos == 512) s->rTPos = 0; \
|
||||
} \
|
||||
s->rNToGo--;
|
||||
|
||||
|
||||
|
||||
/*-- Stuff for doing CRCs. --*/
|
||||
|
||||
extern UInt32 BZ2_crc32Table[256];
|
||||
|
||||
#define BZ_INITIALISE_CRC(crcVar) \
|
||||
{ \
|
||||
crcVar = 0xffffffffL; \
|
||||
}
|
||||
|
||||
#define BZ_FINALISE_CRC(crcVar) \
|
||||
{ \
|
||||
crcVar = ~(crcVar); \
|
||||
}
|
||||
|
||||
#define BZ_UPDATE_CRC(crcVar,cha) \
|
||||
{ \
|
||||
crcVar = (crcVar << 8) ^ \
|
||||
BZ2_crc32Table[(crcVar >> 24) ^ \
|
||||
((UChar)cha)]; \
|
||||
}
|
||||
|
||||
|
||||
|
||||
/*-- States and modes for compression. --*/
|
||||
|
||||
#define BZ_M_IDLE 1
|
||||
#define BZ_M_RUNNING 2
|
||||
#define BZ_M_FLUSHING 3
|
||||
#define BZ_M_FINISHING 4
|
||||
|
||||
#define BZ_S_OUTPUT 1
|
||||
#define BZ_S_INPUT 2
|
||||
|
||||
#define BZ_N_RADIX 2
|
||||
#define BZ_N_QSORT 12
|
||||
#define BZ_N_SHELL 18
|
||||
#define BZ_N_OVERSHOOT (BZ_N_RADIX + BZ_N_QSORT + BZ_N_SHELL + 2)
|
||||
|
||||
|
||||
|
||||
|
||||
/*-- Structure holding all the compression-side stuff. --*/
|
||||
|
||||
typedef
|
||||
struct {
|
||||
/* pointer back to the struct bz_stream */
|
||||
bz_stream* strm;
|
||||
|
||||
/* mode this stream is in, and whether inputting */
|
||||
/* or outputting data */
|
||||
Int32 mode;
|
||||
Int32 state;
|
||||
|
||||
/* remembers avail_in when flush/finish requested */
|
||||
UInt32 avail_in_expect;
|
||||
|
||||
/* for doing the block sorting */
|
||||
UInt32* arr1;
|
||||
UInt32* arr2;
|
||||
UInt32* ftab;
|
||||
Int32 origPtr;
|
||||
|
||||
/* aliases for arr1 and arr2 */
|
||||
UInt32* ptr;
|
||||
UChar* block;
|
||||
UInt16* mtfv;
|
||||
UChar* zbits;
|
||||
|
||||
/* for deciding when to use the fallback sorting algorithm */
|
||||
Int32 workFactor;
|
||||
|
||||
/* run-length-encoding of the input */
|
||||
UInt32 state_in_ch;
|
||||
Int32 state_in_len;
|
||||
BZ_RAND_DECLS;
|
||||
|
||||
/* input and output limits and current posns */
|
||||
Int32 nblock;
|
||||
Int32 nblockMAX;
|
||||
Int32 numZ;
|
||||
Int32 state_out_pos;
|
||||
|
||||
/* map of bytes used in block */
|
||||
Int32 nInUse;
|
||||
Bool inUse[256];
|
||||
UChar unseqToSeq[256];
|
||||
|
||||
/* the buffer for bit stream creation */
|
||||
UInt32 bsBuff;
|
||||
Int32 bsLive;
|
||||
|
||||
/* block and combined CRCs */
|
||||
UInt32 blockCRC;
|
||||
UInt32 combinedCRC;
|
||||
|
||||
/* misc administratium */
|
||||
Int32 verbosity;
|
||||
Int32 blockNo;
|
||||
Int32 blockSize100k;
|
||||
|
||||
/* stuff for coding the MTF values */
|
||||
Int32 nMTF;
|
||||
Int32 mtfFreq [BZ_MAX_ALPHA_SIZE];
|
||||
UChar selector [BZ_MAX_SELECTORS];
|
||||
UChar selectorMtf[BZ_MAX_SELECTORS];
|
||||
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 code [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 rfreq [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
/* second dimension: only 3 needed; 4 makes index calculations faster */
|
||||
UInt32 len_pack[BZ_MAX_ALPHA_SIZE][4];
|
||||
|
||||
}
|
||||
EState;
|
||||
|
||||
|
||||
|
||||
/*-- externs for compression. --*/
|
||||
|
||||
extern void
|
||||
BZ2_blockSort ( EState* );
|
||||
|
||||
extern void
|
||||
BZ2_compressBlock ( EState*, Bool );
|
||||
|
||||
extern void
|
||||
BZ2_bsInitWrite ( EState* );
|
||||
|
||||
extern void
|
||||
BZ2_hbAssignCodes ( Int32*, UChar*, Int32, Int32, Int32 );
|
||||
|
||||
extern void
|
||||
BZ2_hbMakeCodeLengths ( UChar*, Int32*, Int32, Int32 );
|
||||
|
||||
|
||||
|
||||
/*-- states for decompression. --*/
|
||||
|
||||
#define BZ_X_IDLE 1
|
||||
#define BZ_X_OUTPUT 2
|
||||
|
||||
#define BZ_X_MAGIC_1 10
|
||||
#define BZ_X_MAGIC_2 11
|
||||
#define BZ_X_MAGIC_3 12
|
||||
#define BZ_X_MAGIC_4 13
|
||||
#define BZ_X_BLKHDR_1 14
|
||||
#define BZ_X_BLKHDR_2 15
|
||||
#define BZ_X_BLKHDR_3 16
|
||||
#define BZ_X_BLKHDR_4 17
|
||||
#define BZ_X_BLKHDR_5 18
|
||||
#define BZ_X_BLKHDR_6 19
|
||||
#define BZ_X_BCRC_1 20
|
||||
#define BZ_X_BCRC_2 21
|
||||
#define BZ_X_BCRC_3 22
|
||||
#define BZ_X_BCRC_4 23
|
||||
#define BZ_X_RANDBIT 24
|
||||
#define BZ_X_ORIGPTR_1 25
|
||||
#define BZ_X_ORIGPTR_2 26
|
||||
#define BZ_X_ORIGPTR_3 27
|
||||
#define BZ_X_MAPPING_1 28
|
||||
#define BZ_X_MAPPING_2 29
|
||||
#define BZ_X_SELECTOR_1 30
|
||||
#define BZ_X_SELECTOR_2 31
|
||||
#define BZ_X_SELECTOR_3 32
|
||||
#define BZ_X_CODING_1 33
|
||||
#define BZ_X_CODING_2 34
|
||||
#define BZ_X_CODING_3 35
|
||||
#define BZ_X_MTF_1 36
|
||||
#define BZ_X_MTF_2 37
|
||||
#define BZ_X_MTF_3 38
|
||||
#define BZ_X_MTF_4 39
|
||||
#define BZ_X_MTF_5 40
|
||||
#define BZ_X_MTF_6 41
|
||||
#define BZ_X_ENDHDR_2 42
|
||||
#define BZ_X_ENDHDR_3 43
|
||||
#define BZ_X_ENDHDR_4 44
|
||||
#define BZ_X_ENDHDR_5 45
|
||||
#define BZ_X_ENDHDR_6 46
|
||||
#define BZ_X_CCRC_1 47
|
||||
#define BZ_X_CCRC_2 48
|
||||
#define BZ_X_CCRC_3 49
|
||||
#define BZ_X_CCRC_4 50
|
||||
|
||||
|
||||
|
||||
/*-- Constants for the fast MTF decoder. --*/
|
||||
|
||||
#define MTFA_SIZE 4096
|
||||
#define MTFL_SIZE 16
|
||||
|
||||
|
||||
|
||||
/*-- Structure holding all the decompression-side stuff. --*/
|
||||
|
||||
typedef
|
||||
struct {
|
||||
/* pointer back to the struct bz_stream */
|
||||
bz_stream* strm;
|
||||
|
||||
/* state indicator for this stream */
|
||||
Int32 state;
|
||||
|
||||
/* for doing the final run-length decoding */
|
||||
UChar state_out_ch;
|
||||
Int32 state_out_len;
|
||||
Bool blockRandomised;
|
||||
BZ_RAND_DECLS;
|
||||
|
||||
/* the buffer for bit stream reading */
|
||||
UInt32 bsBuff;
|
||||
Int32 bsLive;
|
||||
|
||||
/* misc administratium */
|
||||
Int32 blockSize100k;
|
||||
Bool smallDecompress;
|
||||
Int32 currBlockNo;
|
||||
Int32 verbosity;
|
||||
|
||||
/* for undoing the Burrows-Wheeler transform */
|
||||
Int32 origPtr;
|
||||
UInt32 tPos;
|
||||
Int32 k0;
|
||||
Int32 unzftab[256];
|
||||
Int32 nblock_used;
|
||||
Int32 cftab[257];
|
||||
Int32 cftabCopy[257];
|
||||
|
||||
/* for undoing the Burrows-Wheeler transform (FAST) */
|
||||
UInt32 *tt;
|
||||
|
||||
/* for undoing the Burrows-Wheeler transform (SMALL) */
|
||||
UInt16 *ll16;
|
||||
UChar *ll4;
|
||||
|
||||
/* stored and calculated CRCs */
|
||||
UInt32 storedBlockCRC;
|
||||
UInt32 storedCombinedCRC;
|
||||
UInt32 calculatedBlockCRC;
|
||||
UInt32 calculatedCombinedCRC;
|
||||
|
||||
/* map of bytes used in block */
|
||||
Int32 nInUse;
|
||||
Bool inUse[256];
|
||||
Bool inUse16[16];
|
||||
UChar seqToUnseq[256];
|
||||
|
||||
/* for decoding the MTF values */
|
||||
UChar mtfa [MTFA_SIZE];
|
||||
Int32 mtfbase[256 / MTFL_SIZE];
|
||||
UChar selector [BZ_MAX_SELECTORS];
|
||||
UChar selectorMtf[BZ_MAX_SELECTORS];
|
||||
UChar len [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
|
||||
Int32 limit [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 base [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 perm [BZ_N_GROUPS][BZ_MAX_ALPHA_SIZE];
|
||||
Int32 minLens[BZ_N_GROUPS];
|
||||
|
||||
/* save area for scalars in the main decompress code */
|
||||
Int32 save_i;
|
||||
Int32 save_j;
|
||||
Int32 save_t;
|
||||
Int32 save_alphaSize;
|
||||
Int32 save_nGroups;
|
||||
Int32 save_nSelectors;
|
||||
Int32 save_EOB;
|
||||
Int32 save_groupNo;
|
||||
Int32 save_groupPos;
|
||||
Int32 save_nextSym;
|
||||
Int32 save_nblockMAX;
|
||||
Int32 save_nblock;
|
||||
Int32 save_es;
|
||||
Int32 save_N;
|
||||
Int32 save_curr;
|
||||
Int32 save_zt;
|
||||
Int32 save_zn;
|
||||
Int32 save_zvec;
|
||||
Int32 save_zj;
|
||||
Int32 save_gSel;
|
||||
Int32 save_gMinlen;
|
||||
Int32* save_gLimit;
|
||||
Int32* save_gBase;
|
||||
Int32* save_gPerm;
|
||||
|
||||
}
|
||||
DState;
|
||||
|
||||
|
||||
|
||||
/*-- Macros for decompression. --*/
|
||||
|
||||
#define BZ_GET_FAST(cccc) \
|
||||
s->tPos = s->tt[s->tPos]; \
|
||||
cccc = (UChar)(s->tPos & 0xff); \
|
||||
s->tPos >>= 8;
|
||||
|
||||
#define BZ_GET_FAST_C(cccc) \
|
||||
c_tPos = c_tt[c_tPos]; \
|
||||
cccc = (UChar)(c_tPos & 0xff); \
|
||||
c_tPos >>= 8;
|
||||
|
||||
#define SET_LL4(i,n) \
|
||||
{ if (((i) & 0x1) == 0) \
|
||||
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0xf0) | (n); else \
|
||||
s->ll4[(i) >> 1] = (s->ll4[(i) >> 1] & 0x0f) | ((n) << 4); \
|
||||
}
|
||||
|
||||
#define GET_LL4(i) \
|
||||
((((UInt32)(s->ll4[(i) >> 1])) >> (((i) << 2) & 0x4)) & 0xF)
|
||||
|
||||
#define SET_LL(i,n) \
|
||||
{ s->ll16[i] = (UInt16)(n & 0x0000ffff); \
|
||||
SET_LL4(i, n >> 16); \
|
||||
}
|
||||
|
||||
#define GET_LL(i) \
|
||||
(((UInt32)s->ll16[i]) | (GET_LL4(i) << 16))
|
||||
|
||||
#define BZ_GET_SMALL(cccc) \
|
||||
cccc = BZ2_indexIntoF ( s->tPos, s->cftab ); \
|
||||
s->tPos = GET_LL(s->tPos);
|
||||
|
||||
|
||||
/*-- externs for decompression. --*/
|
||||
|
||||
extern Int32
|
||||
BZ2_indexIntoF ( Int32, Int32* );
|
||||
|
||||
extern Int32
|
||||
BZ2_decompress ( DState* );
|
||||
|
||||
extern void
|
||||
BZ2_hbCreateDecodeTables ( Int32*, Int32*, Int32*, UChar*,
|
||||
Int32, Int32, Int32 );
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/*-- BZ_NO_STDIO seems to make NULL disappear on some platforms. --*/
|
||||
|
||||
#ifdef BZ_NO_STDIO
|
||||
#ifndef NULL
|
||||
#define NULL 0
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- end bzlib_private.h ---*/
|
||||
/*-------------------------------------------------------------*/
|
128
lib_generic/bzlib_randtable.c
Normal file
128
lib_generic/bzlib_randtable.c
Normal file
@ -0,0 +1,128 @@
|
||||
#include <config.h>
|
||||
#ifdef CONFIG_BZIP2
|
||||
|
||||
/*-------------------------------------------------------------*/
|
||||
/*--- Table for randomising repetitive blocks ---*/
|
||||
/*--- randtable.c ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
/*--
|
||||
This file is a part of bzip2 and/or libbzip2, a program and
|
||||
library for lossless, block-sorting data compression.
|
||||
|
||||
Copyright (C) 1996-2002 Julian R Seward. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
2. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product
|
||||
documentation would be appreciated but is not required.
|
||||
|
||||
3. Altered source versions must be plainly marked as such, and must
|
||||
not be misrepresented as being the original software.
|
||||
|
||||
4. The name of the author may not be used to endorse or promote
|
||||
products derived from this software without specific prior written
|
||||
permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
|
||||
OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
|
||||
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
|
||||
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
Julian Seward, Cambridge, UK.
|
||||
jseward@acm.org
|
||||
bzip2/libbzip2 version 1.0 of 21 March 2000
|
||||
|
||||
This program is based on (at least) the work of:
|
||||
Mike Burrows
|
||||
David Wheeler
|
||||
Peter Fenwick
|
||||
Alistair Moffat
|
||||
Radford Neal
|
||||
Ian H. Witten
|
||||
Robert Sedgewick
|
||||
Jon L. Bentley
|
||||
|
||||
For more information on these sources, see the manual.
|
||||
--*/
|
||||
|
||||
|
||||
#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 ---*/
|
||||
/*-------------------------------------------------------------*/
|
||||
|
||||
#endif /* CONFIG_BZIP2 */
|
Loading…
Reference in New Issue
Block a user