[U-Boot-Users] [PATCH] Add support for LZMA uncompression algorithm.
Luigi 'Comio' Mantellini
luigi.mantellini at idf-hit.com
Fri Apr 18 09:50:19 CEST 2008
Signed-off-by: Luigi 'Comio' Mantellini <luigi.mantellini at idf-hit.com>
---
Makefile | 1 +
README | 23 ++
common/cmd_bootm.c | 23 ++
common/image.c | 7 +-
include/image.h | 1 +
include/lzma/LzmaDecode.h | 31 ++
include/lzma/LzmaTools.h | 31 ++
include/lzma/LzmaTypes.h | 31 ++
lib_lzma/LGPL.txt | 504 +++++++++++++++++++++++++++++++++
lib_lzma/LzmaDecode.c | 584 ++++++++++++++++++++++++++++++++++++++
lib_lzma/LzmaDecode.h | 113 ++++++++
lib_lzma/LzmaTools.c | 142 ++++++++++
lib_lzma/LzmaTools.h | 35 +++
lib_lzma/LzmaTypes.h | 45 +++
lib_lzma/Makefile | 51 ++++
lib_lzma/README.txt | 28 ++
lib_lzma/history.txt | 198 +++++++++++++
lib_lzma/import_lzmasdk.sh | 38 +++
lib_lzma/lzma.txt | 663 ++++++++++++++++++++++++++++++++++++++++++++
19 files changed, 2547 insertions(+), 2 deletions(-)
create mode 100644 include/lzma/LzmaDecode.h
create mode 100644 include/lzma/LzmaTools.h
create mode 100644 include/lzma/LzmaTypes.h
create mode 100644 lib_lzma/LGPL.txt
create mode 100644 lib_lzma/LzmaDecode.c
create mode 100644 lib_lzma/LzmaDecode.h
create mode 100644 lib_lzma/LzmaTools.c
create mode 100644 lib_lzma/LzmaTools.h
create mode 100644 lib_lzma/LzmaTypes.h
create mode 100644 lib_lzma/Makefile
create mode 100644 lib_lzma/README.txt
create mode 100644 lib_lzma/history.txt
create mode 100644 lib_lzma/import_lzmasdk.sh
create mode 100644 lib_lzma/lzma.txt
diff --git a/Makefile b/Makefile
index e56889e..253fa9f 100644
--- a/Makefile
+++ b/Makefile
@@ -199,6 +199,7 @@ endif
OBJS := $(addprefix $(obj),$(OBJS))
LIBS = lib_generic/libgeneric.a
+LIBS += lib_lzma/lib_lzma.a
LIBS += $(shell if [ -f board/$(VENDOR)/common/Makefile ]; then echo \
"board/$(VENDOR)/common/lib$(VENDOR).a"; fi)
LIBS += board/$(BOARDDIR)/lib$(BOARD).a
diff --git a/README b/README
index 7c16345..3f10f9c 100644
--- a/README
+++ b/README
@@ -1031,6 +1031,29 @@ The following options need to be configured:
the malloc area (as defined by CFG_MALLOC_LEN) should
be at least 4MB.
+ CONFIG_LZMA
+
+ If this option is set, support for lzma compressed
+ images is included.
+
+ Note: The LZMA algorithm adds about 2KB of code and it
+ requires an amount of dynamic memory that is given by the
+ formula:
+
+ (1846 + 768 << (lc + lp)) * sizeof(uint16)
+
+ Where lc and lp stand for, respectively, Literal context bits
+ and Literal pos bits.
+
+ This value is upper-bounded by 14MB in the worst case. Anyway,
+ for a ~4MB large kernel image, we have lc=3 and lp=0 for a
+ total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is
+ a very small buffer.
+
+ Use the lzmainfo tool to determinate the lc and lp values and
+ then calculate the amount of needed dynamic memory (ensuring
+ the appropriate CFG_MALLOC_LEN value).
+
- MII/PHY support:
CONFIG_PHY_ADDR
diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
index 9e5ce4b..ba6de50 100644
--- a/common/cmd_bootm.c
+++ b/common/cmd_bootm.c
@@ -40,6 +40,13 @@
#include <hush.h>
#endif
+#ifdef CONFIG_LZMA
+#define _7ZIP_BYTE_DEFINED /* Byte already defined by zlib */
+#include <lzma/LzmaTypes.h>
+#include <lzma/LzmaDecode.h>
+#include <lzma/LzmaTools.h>
+#endif /* CONFIG_LZMA */
+
DECLARE_GLOBAL_DATA_PTR;
extern int gunzip (void *dst, int dstlen, unsigned char *src, unsigned long *lenp);
@@ -271,6 +278,22 @@ int do_bootm (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
load_end = load_start + unc_len;
break;
#endif /* CONFIG_BZIP2 */
+#ifdef CONFIG_LZMA
+ case IH_COMP_LZMA:
+ printf (" Uncompressing %s ... ", type_name);
+
+ int ret = lzmaBuffToBuffDecompress(
+ (unsigned char *)load_start, &unc_len,
+ (unsigned char *)os_data, os_len);
+ if (ret != LZMA_RESULT_OK) {
+ printf ("LZMA: uncompress or overwrite error %d "
+ "- must RESET board to recover\n", ret);
+ show_boot_progress (-6);
+ do_reset (cmdtp, flag, argc, argv);
+ }
+ load_end = load_start + unc_len;
+ break;
+#endif /* CONFIG_LZMA */
default:
if (iflag)
enable_interrupts();
diff --git a/common/image.c b/common/image.c
index 9e63432..01cea4e 100644
--- a/common/image.c
+++ b/common/image.c
@@ -152,6 +152,9 @@ static table_entry_t uimage_comp[] = {
{ IH_COMP_NONE, "none", "uncompressed", },
{ IH_COMP_BZIP2, "bzip2", "bzip2 compressed", },
{ IH_COMP_GZIP, "gzip", "gzip compressed", },
+#if defined(CONFIG_LZMA) || defined(USE_HOSTCC)
+ { IH_COMP_LZMA, "lzma", "lzma compressed", },
+#endif
{ -1, "", "", },
};
@@ -1950,7 +1953,7 @@ static int calculate_hash (const void *data, int data_len, const char *algo,
return 0;
}
-#ifdef USE_HOSTCC
+// #ifdef USE_HOSTCC
/**
* fit_set_hashes - process FIT component image nodes and calculate hashes
* @fit: pointer to the FIT format image header
@@ -2119,7 +2122,7 @@ int fit_image_hash_set_value (void *fit, int noffset, uint8_t *value,
return 0;
}
-#endif /* USE_HOSTCC */
+// #endif /* USE_HOSTCC */
/**
* fit_image_check_hashes - verify data intergity
diff --git a/include/image.h b/include/image.h
index c1a6cbb..ef38edc 100644
--- a/include/image.h
+++ b/include/image.h
@@ -164,6 +164,7 @@
#define IH_COMP_NONE 0 /* No Compression Used */
#define IH_COMP_GZIP 1 /* gzip Compression Used */
#define IH_COMP_BZIP2 2 /* bzip2 Compression Used */
+#define IH_COMP_LZMA 3 /* lzma Compression Used */
#define IH_MAGIC 0x27051956 /* Image Magic Number */
#define IH_NMLEN 32 /* Image Name Length */
diff --git a/include/lzma/LzmaDecode.h b/include/lzma/LzmaDecode.h
new file mode 100644
index 0000000..618c005
--- /dev/null
+++ b/include/lzma/LzmaDecode.h
@@ -0,0 +1,31 @@
+/*
+ * Fake include for LzmaDecode.h
+ *
+ * Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini (luigi.mantellini at idf-hit.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __LZMADECODE_H__FAKE__
+#define __LZMADECODE_H__FAKE__
+
+#include "../../lib_lzma/LzmaDecode.h"
+
+#endif
diff --git a/include/lzma/LzmaTools.h b/include/lzma/LzmaTools.h
new file mode 100644
index 0000000..ac96800
--- /dev/null
+++ b/include/lzma/LzmaTools.h
@@ -0,0 +1,31 @@
+/*
+ * Fake include for LzmaTools.h
+ *
+ * Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini (luigi.mantellini at idf-hit.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __LZMATOOLS_H__FAKE__
+#define __LZMATOOLS_H__FAKE__
+
+#include "../../lib_lzma/LzmaTools.h"
+
+#endif
diff --git a/include/lzma/LzmaTypes.h b/include/lzma/LzmaTypes.h
new file mode 100644
index 0000000..f26c1a8
--- /dev/null
+++ b/include/lzma/LzmaTypes.h
@@ -0,0 +1,31 @@
+/*
+ * Fake include for LzmaTypes.h
+ *
+ * Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini (luigi.mantellini at idf-hit.com)
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __LZMATYPES_H__FAKE__
+#define __LZMATYPES_H__FAKE__
+
+#include "../../lib_lzma/LzmaTypes.h"
+
+#endif
diff --git a/lib_lzma/LGPL.txt b/lib_lzma/LGPL.txt
new file mode 100644
index 0000000..f3926a6
--- /dev/null
+++ b/lib_lzma/LGPL.txt
@@ -0,0 +1,504 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+
+That's all there is to it!
+
+
diff --git a/lib_lzma/LzmaDecode.c b/lib_lzma/LzmaDecode.c
new file mode 100644
index 0000000..71c62c4
--- /dev/null
+++ b/lib_lzma/LzmaDecode.c
@@ -0,0 +1,584 @@
+/*
+ LzmaDecode.c
+ LZMA Decoder (optimized for Speed version)
+
+ LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01)
+ http://www.7-zip.org/
+
+ LZMA SDK is licensed under two licenses:
+ 1) GNU Lesser General Public License (GNU LGPL)
+ 2) Common Public License (CPL)
+ It means that you can select one of these two licenses and
+ follow rules of that license.
+
+ SPECIAL EXCEPTION:
+ Igor Pavlov, as the author of this Code, expressly permits you to
+ statically or dynamically link your Code (or bind by name) to the
+ interfaces of this file without subjecting your linked Code to the
+ terms of the CPL or GNU LGPL. Any modifications or additions
+ to this file, however, are subject to the LGPL or CPL terms.
+*/
+
+#include "LzmaDecode.h"
+
+#define kNumTopBits 24
+#define kTopValue ((UInt32)1 << kNumTopBits)
+
+#define kNumBitModelTotalBits 11
+#define kBitModelTotal (1 << kNumBitModelTotalBits)
+#define kNumMoveBits 5
+
+#define RC_READ_BYTE (*Buffer++)
+
+#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \
+ { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }}
+
+#ifdef _LZMA_IN_CB
+
+#define RC_TEST { if (Buffer == BufferLim) \
+ { SizeT size; int result = InCallback->Read(InCallback, &Buffer, &size); if (result != LZMA_RESULT_OK) return result; \
+ BufferLim = Buffer + size; if (size == 0) return LZMA_RESULT_DATA_ERROR; }}
+
+#define RC_INIT Buffer = BufferLim = 0; RC_INIT2
+
+#else
+
+#define RC_TEST { if (Buffer == BufferLim) return LZMA_RESULT_DATA_ERROR; }
+
+#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2
+
+#endif
+
+#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; }
+
+#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound)
+#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits;
+#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits;
+
+#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \
+ { UpdateBit0(p); mi <<= 1; A0; } else \
+ { UpdateBit1(p); mi = (mi + mi) + 1; A1; }
+
+#define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;)
+
+#define RangeDecoderBitTreeDecode(probs, numLevels, res) \
+ { int i = numLevels; res = 1; \
+ do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); \
+ res -= (1 << numLevels); }
+
+
+#define kNumPosBitsMax 4
+#define kNumPosStatesMax (1 << kNumPosBitsMax)
+
+#define kLenNumLowBits 3
+#define kLenNumLowSymbols (1 << kLenNumLowBits)
+#define kLenNumMidBits 3
+#define kLenNumMidSymbols (1 << kLenNumMidBits)
+#define kLenNumHighBits 8
+#define kLenNumHighSymbols (1 << kLenNumHighBits)
+
+#define LenChoice 0
+#define LenChoice2 (LenChoice + 1)
+#define LenLow (LenChoice2 + 1)
+#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
+#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
+#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
+
+
+#define kNumStates 12
+#define kNumLitStates 7
+
+#define kStartPosModelIndex 4
+#define kEndPosModelIndex 14
+#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
+
+#define kNumPosSlotBits 6
+#define kNumLenToPosStates 4
+
+#define kNumAlignBits 4
+#define kAlignTableSize (1 << kNumAlignBits)
+
+#define kMatchMinLen 2
+
+#define IsMatch 0
+#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
+#define IsRepG0 (IsRep + kNumStates)
+#define IsRepG1 (IsRepG0 + kNumStates)
+#define IsRepG2 (IsRepG1 + kNumStates)
+#define IsRep0Long (IsRepG2 + kNumStates)
+#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
+#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
+#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
+#define LenCoder (Align + kAlignTableSize)
+#define RepLenCoder (LenCoder + kNumLenProbs)
+#define Literal (RepLenCoder + kNumLenProbs)
+
+#if Literal != LZMA_BASE_SIZE
+StopCompilingDueBUG
+#endif
+
+int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size)
+{
+ unsigned char prop0;
+ if (size < LZMA_PROPERTIES_SIZE)
+ return LZMA_RESULT_DATA_ERROR;
+ prop0 = propsData[0];
+ if (prop0 >= (9 * 5 * 5))
+ return LZMA_RESULT_DATA_ERROR;
+ {
+ for (propsRes->pb = 0; prop0 >= (9 * 5); propsRes->pb++, prop0 -= (9 * 5));
+ for (propsRes->lp = 0; prop0 >= 9; propsRes->lp++, prop0 -= 9);
+ propsRes->lc = prop0;
+ /*
+ unsigned char remainder = (unsigned char)(prop0 / 9);
+ propsRes->lc = prop0 % 9;
+ propsRes->pb = remainder / 5;
+ propsRes->lp = remainder % 5;
+ */
+ }
+
+ #ifdef _LZMA_OUT_READ
+ {
+ int i;
+ propsRes->DictionarySize = 0;
+ for (i = 0; i < 4; i++)
+ propsRes->DictionarySize += (UInt32)(propsData[1 + i]) << (i * 8);
+ if (propsRes->DictionarySize == 0)
+ propsRes->DictionarySize = 1;
+ }
+ #endif
+ return LZMA_RESULT_OK;
+}
+
+#define kLzmaStreamWasFinishedId (-1)
+
+int LzmaDecode(CLzmaDecoderState *vs,
+ #ifdef _LZMA_IN_CB
+ ILzmaInCallback *InCallback,
+ #else
+ const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
+ #endif
+ unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed)
+{
+ CProb *p = vs->Probs;
+ SizeT nowPos = 0;
+ Byte previousByte = 0;
+ UInt32 posStateMask = (1 << (vs->Properties.pb)) - 1;
+ UInt32 literalPosMask = (1 << (vs->Properties.lp)) - 1;
+ int lc = vs->Properties.lc;
+
+ #ifdef _LZMA_OUT_READ
+
+ UInt32 Range = vs->Range;
+ UInt32 Code = vs->Code;
+ #ifdef _LZMA_IN_CB
+ const Byte *Buffer = vs->Buffer;
+ const Byte *BufferLim = vs->BufferLim;
+ #else
+ const Byte *Buffer = inStream;
+ const Byte *BufferLim = inStream + inSize;
+ #endif
+ int state = vs->State;
+ UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
+ int len = vs->RemainLen;
+ UInt32 globalPos = vs->GlobalPos;
+ UInt32 distanceLimit = vs->DistanceLimit;
+
+ Byte *dictionary = vs->Dictionary;
+ UInt32 dictionarySize = vs->Properties.DictionarySize;
+ UInt32 dictionaryPos = vs->DictionaryPos;
+
+ Byte tempDictionary[4];
+
+ #ifndef _LZMA_IN_CB
+ *inSizeProcessed = 0;
+ #endif
+ *outSizeProcessed = 0;
+ if (len == kLzmaStreamWasFinishedId)
+ return LZMA_RESULT_OK;
+
+ if (dictionarySize == 0)
+ {
+ dictionary = tempDictionary;
+ dictionarySize = 1;
+ tempDictionary[0] = vs->TempDictionary[0];
+ }
+
+ if (len == kLzmaNeedInitId)
+ {
+ {
+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
+ UInt32 i;
+ for (i = 0; i < numProbs; i++)
+ p[i] = kBitModelTotal >> 1;
+ rep0 = rep1 = rep2 = rep3 = 1;
+ state = 0;
+ globalPos = 0;
+ distanceLimit = 0;
+ dictionaryPos = 0;
+ dictionary[dictionarySize - 1] = 0;
+ #ifdef _LZMA_IN_CB
+ RC_INIT;
+ #else
+ RC_INIT(inStream, inSize);
+ #endif
+ }
+ len = 0;
+ }
+ while(len != 0 && nowPos < outSize)
+ {
+ UInt32 pos = dictionaryPos - rep0;
+ if (pos >= dictionarySize)
+ pos += dictionarySize;
+ outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos];
+ if (++dictionaryPos == dictionarySize)
+ dictionaryPos = 0;
+ len--;
+ }
+ if (dictionaryPos == 0)
+ previousByte = dictionary[dictionarySize - 1];
+ else
+ previousByte = dictionary[dictionaryPos - 1];
+
+ #else /* if !_LZMA_OUT_READ */
+
+ int state = 0;
+ UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
+ int len = 0;
+ const Byte *Buffer;
+ const Byte *BufferLim;
+ UInt32 Range;
+ UInt32 Code;
+
+ #ifndef _LZMA_IN_CB
+ *inSizeProcessed = 0;
+ #endif
+ *outSizeProcessed = 0;
+
+ {
+ UInt32 i;
+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
+ for (i = 0; i < numProbs; i++)
+ p[i] = kBitModelTotal >> 1;
+ }
+
+ #ifdef _LZMA_IN_CB
+ RC_INIT;
+ #else
+ RC_INIT(inStream, inSize);
+ #endif
+
+ #endif /* _LZMA_OUT_READ */
+
+ while(nowPos < outSize)
+ {
+ CProb *prob;
+ UInt32 bound;
+ int posState = (int)(
+ (nowPos
+ #ifdef _LZMA_OUT_READ
+ + globalPos
+ #endif
+ )
+ & posStateMask);
+
+ prob = p + IsMatch + (state << kNumPosBitsMax) + posState;
+ IfBit0(prob)
+ {
+ int symbol = 1;
+ UpdateBit0(prob)
+ prob = p + Literal + (LZMA_LIT_SIZE *
+ (((
+ (nowPos
+ #ifdef _LZMA_OUT_READ
+ + globalPos
+ #endif
+ )
+ & literalPosMask) << lc) + (previousByte >> (8 - lc))));
+
+ if (state >= kNumLitStates)
+ {
+ int matchByte;
+ #ifdef _LZMA_OUT_READ
+ UInt32 pos = dictionaryPos - rep0;
+ if (pos >= dictionarySize)
+ pos += dictionarySize;
+ matchByte = dictionary[pos];
+ #else
+ matchByte = outStream[nowPos - rep0];
+ #endif
+ do
+ {
+ int bit;
+ CProb *probLit;
+ matchByte <<= 1;
+ bit = (matchByte & 0x100);
+ probLit = prob + 0x100 + bit + symbol;
+ RC_GET_BIT2(probLit, symbol, if (bit != 0) break, if (bit == 0) break)
+ }
+ while (symbol < 0x100);
+ }
+ while (symbol < 0x100)
+ {
+ CProb *probLit = prob + symbol;
+ RC_GET_BIT(probLit, symbol)
+ }
+ previousByte = (Byte)symbol;
+
+ outStream[nowPos++] = previousByte;
+ #ifdef _LZMA_OUT_READ
+ if (distanceLimit < dictionarySize)
+ distanceLimit++;
+
+ dictionary[dictionaryPos] = previousByte;
+ if (++dictionaryPos == dictionarySize)
+ dictionaryPos = 0;
+ #endif
+ if (state < 4) state = 0;
+ else if (state < 10) state -= 3;
+ else state -= 6;
+ }
+ else
+ {
+ UpdateBit1(prob);
+ prob = p + IsRep + state;
+ IfBit0(prob)
+ {
+ UpdateBit0(prob);
+ rep3 = rep2;
+ rep2 = rep1;
+ rep1 = rep0;
+ state = state < kNumLitStates ? 0 : 3;
+ prob = p + LenCoder;
+ }
+ else
+ {
+ UpdateBit1(prob);
+ prob = p + IsRepG0 + state;
+ IfBit0(prob)
+ {
+ UpdateBit0(prob);
+ prob = p + IsRep0Long + (state << kNumPosBitsMax) + posState;
+ IfBit0(prob)
+ {
+ #ifdef _LZMA_OUT_READ
+ UInt32 pos;
+ #endif
+ UpdateBit0(prob);
+
+ #ifdef _LZMA_OUT_READ
+ if (distanceLimit == 0)
+ #else
+ if (nowPos == 0)
+ #endif
+ return LZMA_RESULT_DATA_ERROR;
+
+ state = state < kNumLitStates ? 9 : 11;
+ #ifdef _LZMA_OUT_READ
+ pos = dictionaryPos - rep0;
+ if (pos >= dictionarySize)
+ pos += dictionarySize;
+ previousByte = dictionary[pos];
+ dictionary[dictionaryPos] = previousByte;
+ if (++dictionaryPos == dictionarySize)
+ dictionaryPos = 0;
+ #else
+ previousByte = outStream[nowPos - rep0];
+ #endif
+ outStream[nowPos++] = previousByte;
+ #ifdef _LZMA_OUT_READ
+ if (distanceLimit < dictionarySize)
+ distanceLimit++;
+ #endif
+
+ continue;
+ }
+ else
+ {
+ UpdateBit1(prob);
+ }
+ }
+ else
+ {
+ UInt32 distance;
+ UpdateBit1(prob);
+ prob = p + IsRepG1 + state;
+ IfBit0(prob)
+ {
+ UpdateBit0(prob);
+ distance = rep1;
+ }
+ else
+ {
+ UpdateBit1(prob);
+ prob = p + IsRepG2 + state;
+ IfBit0(prob)
+ {
+ UpdateBit0(prob);
+ distance = rep2;
+ }
+ else
+ {
+ UpdateBit1(prob);
+ distance = rep3;
+ rep3 = rep2;
+ }
+ rep2 = rep1;
+ }
+ rep1 = rep0;
+ rep0 = distance;
+ }
+ state = state < kNumLitStates ? 8 : 11;
+ prob = p + RepLenCoder;
+ }
+ {
+ int numBits, offset;
+ CProb *probLen = prob + LenChoice;
+ IfBit0(probLen)
+ {
+ UpdateBit0(probLen);
+ probLen = prob + LenLow + (posState << kLenNumLowBits);
+ offset = 0;
+ numBits = kLenNumLowBits;
+ }
+ else
+ {
+ UpdateBit1(probLen);
+ probLen = prob + LenChoice2;
+ IfBit0(probLen)
+ {
+ UpdateBit0(probLen);
+ probLen = prob + LenMid + (posState << kLenNumMidBits);
+ offset = kLenNumLowSymbols;
+ numBits = kLenNumMidBits;
+ }
+ else
+ {
+ UpdateBit1(probLen);
+ probLen = prob + LenHigh;
+ offset = kLenNumLowSymbols + kLenNumMidSymbols;
+ numBits = kLenNumHighBits;
+ }
+ }
+ RangeDecoderBitTreeDecode(probLen, numBits, len);
+ len += offset;
+ }
+
+ if (state < 4)
+ {
+ int posSlot;
+ state += kNumLitStates;
+ prob = p + PosSlot +
+ ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
+ kNumPosSlotBits);
+ RangeDecoderBitTreeDecode(prob, kNumPosSlotBits, posSlot);
+ if (posSlot >= kStartPosModelIndex)
+ {
+ int numDirectBits = ((posSlot >> 1) - 1);
+ rep0 = (2 | ((UInt32)posSlot & 1));
+ if (posSlot < kEndPosModelIndex)
+ {
+ rep0 <<= numDirectBits;
+ prob = p + SpecPos + rep0 - posSlot - 1;
+ }
+ else
+ {
+ numDirectBits -= kNumAlignBits;
+ do
+ {
+ RC_NORMALIZE
+ Range >>= 1;
+ rep0 <<= 1;
+ if (Code >= Range)
+ {
+ Code -= Range;
+ rep0 |= 1;
+ }
+ }
+ while (--numDirectBits != 0);
+ prob = p + Align;
+ rep0 <<= kNumAlignBits;
+ numDirectBits = kNumAlignBits;
+ }
+ {
+ int i = 1;
+ int mi = 1;
+ do
+ {
+ CProb *prob3 = prob + mi;
+ RC_GET_BIT2(prob3, mi, ; , rep0 |= i);
+ i <<= 1;
+ }
+ while(--numDirectBits != 0);
+ }
+ }
+ else
+ rep0 = posSlot;
+ if (++rep0 == (UInt32)(0))
+ {
+ /* it's for stream version */
+ len = kLzmaStreamWasFinishedId;
+ break;
+ }
+ }
+
+ len += kMatchMinLen;
+ #ifdef _LZMA_OUT_READ
+ if (rep0 > distanceLimit)
+ #else
+ if (rep0 > nowPos)
+ #endif
+ return LZMA_RESULT_DATA_ERROR;
+
+ #ifdef _LZMA_OUT_READ
+ if (dictionarySize - distanceLimit > (UInt32)len)
+ distanceLimit += len;
+ else
+ distanceLimit = dictionarySize;
+ #endif
+
+ do
+ {
+ #ifdef _LZMA_OUT_READ
+ UInt32 pos = dictionaryPos - rep0;
+ if (pos >= dictionarySize)
+ pos += dictionarySize;
+ previousByte = dictionary[pos];
+ dictionary[dictionaryPos] = previousByte;
+ if (++dictionaryPos == dictionarySize)
+ dictionaryPos = 0;
+ #else
+ previousByte = outStream[nowPos - rep0];
+ #endif
+ len--;
+ outStream[nowPos++] = previousByte;
+ }
+ while(len != 0 && nowPos < outSize);
+ }
+ }
+ RC_NORMALIZE;
+
+ #ifdef _LZMA_OUT_READ
+ vs->Range = Range;
+ vs->Code = Code;
+ vs->DictionaryPos = dictionaryPos;
+ vs->GlobalPos = globalPos + (UInt32)nowPos;
+ vs->DistanceLimit = distanceLimit;
+ vs->Reps[0] = rep0;
+ vs->Reps[1] = rep1;
+ vs->Reps[2] = rep2;
+ vs->Reps[3] = rep3;
+ vs->State = state;
+ vs->RemainLen = len;
+ vs->TempDictionary[0] = tempDictionary[0];
+ #endif
+
+ #ifdef _LZMA_IN_CB
+ vs->Buffer = Buffer;
+ vs->BufferLim = BufferLim;
+ #else
+ *inSizeProcessed = (SizeT)(Buffer - inStream);
+ #endif
+ *outSizeProcessed = nowPos;
+ return LZMA_RESULT_OK;
+}
diff --git a/lib_lzma/LzmaDecode.h b/lib_lzma/LzmaDecode.h
new file mode 100644
index 0000000..8382fa8
--- /dev/null
+++ b/lib_lzma/LzmaDecode.h
@@ -0,0 +1,113 @@
+/*
+ LzmaDecode.h
+ LZMA Decoder interface
+
+ LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01)
+ http://www.7-zip.org/
+
+ LZMA SDK is licensed under two licenses:
+ 1) GNU Lesser General Public License (GNU LGPL)
+ 2) Common Public License (CPL)
+ It means that you can select one of these two licenses and
+ follow rules of that license.
+
+ SPECIAL EXCEPTION:
+ Igor Pavlov, as the author of this code, expressly permits you to
+ statically or dynamically link your code (or bind by name) to the
+ interfaces of this file without subjecting your linked code to the
+ terms of the CPL or GNU LGPL. Any modifications or additions
+ to this file, however, are subject to the LGPL or CPL terms.
+*/
+
+#ifndef __LZMADECODE_H
+#define __LZMADECODE_H
+
+#include "LzmaTypes.h"
+
+/* #define _LZMA_IN_CB */
+/* Use callback for input data */
+
+/* #define _LZMA_OUT_READ */
+/* Use read function for output data */
+
+/* #define _LZMA_PROB32 */
+/* It can increase speed on some 32-bit CPUs,
+ but memory usage will be doubled in that case */
+
+/* #define _LZMA_LOC_OPT */
+/* Enable local speed optimizations inside code */
+
+#ifdef _LZMA_PROB32
+#define CProb UInt32
+#else
+#define CProb UInt16
+#endif
+
+#define LZMA_RESULT_OK 0
+#define LZMA_RESULT_DATA_ERROR 1
+
+#ifdef _LZMA_IN_CB
+typedef struct _ILzmaInCallback
+{
+ int (*Read)(void *object, const unsigned char **buffer, SizeT *bufferSize);
+} ILzmaInCallback;
+#endif
+
+#define LZMA_BASE_SIZE 1846
+#define LZMA_LIT_SIZE 768
+
+#define LZMA_PROPERTIES_SIZE 5
+
+typedef struct _CLzmaProperties
+{
+ int lc;
+ int lp;
+ int pb;
+ #ifdef _LZMA_OUT_READ
+ UInt32 DictionarySize;
+ #endif
+}CLzmaProperties;
+
+int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size);
+
+#define LzmaGetNumProbs(Properties) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((Properties)->lc + (Properties)->lp)))
+
+#define kLzmaNeedInitId (-2)
+
+typedef struct _CLzmaDecoderState
+{
+ CLzmaProperties Properties;
+ CProb *Probs;
+
+ #ifdef _LZMA_IN_CB
+ const unsigned char *Buffer;
+ const unsigned char *BufferLim;
+ #endif
+
+ #ifdef _LZMA_OUT_READ
+ unsigned char *Dictionary;
+ UInt32 Range;
+ UInt32 Code;
+ UInt32 DictionaryPos;
+ UInt32 GlobalPos;
+ UInt32 DistanceLimit;
+ UInt32 Reps[4];
+ int State;
+ int RemainLen;
+ unsigned char TempDictionary[4];
+ #endif
+} CLzmaDecoderState;
+
+#ifdef _LZMA_OUT_READ
+#define LzmaDecoderInit(vs) { (vs)->RemainLen = kLzmaNeedInitId; }
+#endif
+
+int LzmaDecode(CLzmaDecoderState *vs,
+ #ifdef _LZMA_IN_CB
+ ILzmaInCallback *inCallback,
+ #else
+ const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
+ #endif
+ unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed);
+
+#endif
diff --git a/lib_lzma/LzmaTools.c b/lib_lzma/LzmaTools.c
new file mode 100644
index 0000000..3d1cc02
--- /dev/null
+++ b/lib_lzma/LzmaTools.c
@@ -0,0 +1,142 @@
+/*
+ * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.57
+ *
+ * Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini (luigi.mantellini at idf-hit.com)
+ *
+ * Copyright (C) 1999-2005 Igor Pavlov
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * LZMA_Alone stream format:
+ *
+ * uchar Properties[5]
+ * uint64 Uncompressed size
+ * uchar data[*]
+ *
+ */
+
+#include <config.h>
+#include <common.h>
+
+#ifdef CONFIG_LZMA
+
+#define LZMA_PROPERTIES_OFFSET 0
+#define LZMA_SIZE_OFFSET LZMA_PROPERTIES_SIZE
+#define LZMA_DATA_OFFSET LZMA_SIZE_OFFSET+sizeof(uint64_t)
+
+#include "LzmaTools.h"
+#include "LzmaDecode.h"
+
+#include <linux/string.h>
+#include <malloc.h>
+
+int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
+ unsigned char *inStream, SizeT length)
+{
+ int res = LZMA_RESULT_DATA_ERROR;
+ int i;
+
+ SizeT outSizeFull = 0xFFFFFFFF; /* 4GBytes limit */
+ SizeT inProcessed;
+ SizeT outProcessed;
+ SizeT outSize;
+ SizeT outSizeHigh;
+ CLzmaDecoderState state; /* it's about 24-80 bytes structure, if int is 32-bit */
+ unsigned char properties[LZMA_PROPERTIES_SIZE];
+ SizeT compressedSize = (SizeT)(length - LZMA_DATA_OFFSET);
+
+ debug ("LZMA: Image address............... 0x%lx\n", inStream);
+ debug ("LZMA: Properties address.......... 0x%lx\n", inStream + LZMA_PROPERTIES_OFFSET);
+ debug ("LZMA: Uncompressed size address... 0x%lx\n", inStream + LZMA_SIZE_OFFSET);
+ debug ("LZMA: Compressed data address..... 0x%lx\n", inStream + LZMA_DATA_OFFSET);
+ debug ("LZMA: Destination address......... 0x%lx\n", outStream);
+
+ memcpy(properties, inStream + LZMA_PROPERTIES_OFFSET, LZMA_PROPERTIES_SIZE);
+
+ memset(&state, 0, sizeof(state));
+ res = LzmaDecodeProperties(&state.Properties,
+ properties,
+ LZMA_PROPERTIES_SIZE);
+ if (res != LZMA_RESULT_OK) {
+ return res;
+ }
+
+ outSize = 0;
+ outSizeHigh = 0;
+ /* Read the uncompressed size */
+ for (i = 0; i < 8; i++) {
+ unsigned char b = inStream[LZMA_SIZE_OFFSET + i];
+ if (i < 4) {
+ outSize += (UInt32)(b) << (i * 8);
+ } else {
+ outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
+ }
+ }
+
+ outSizeFull = (SizeT)outSize;
+ if (sizeof(SizeT) >= 8) {
+ /*
+ * SizeT is a 64 bit uint => We can manage files larger than 4GB!
+ *
+ */
+ outSizeFull |= (((SizeT)outSizeHigh << 16) << 16);
+ } else if (outSizeHigh != 0 || (UInt32)(SizeT)outSize != outSize) {
+ /*
+ * SizeT is a 32 bit uint => We cannot manage files larger than
+ * 4GB!
+ *
+ */
+ debug ("LZMA: 64bit support not enabled.\n");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+
+ debug ("LZMA: Uncompresed size............ 0x%lx\n", outSizeFull);
+ debug ("LZMA: Compresed size.............. 0x%lx\n", compressedSize);
+ debug ("LZMA: Dynamic memory needed....... 0x%lx", LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+
+ state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+
+ if (state.Probs == 0
+ || (outStream == 0 && outSizeFull != 0)
+ || (inStream == 0 && compressedSize != 0)) {
+ free(state.Probs);
+ debug ("\n");
+ return LZMA_RESULT_DATA_ERROR;
+ }
+
+ debug (" allocated.\n");
+
+ /* Decompress */
+
+ res = LzmaDecode(&state,
+ inStream + LZMA_DATA_OFFSET, compressedSize, &inProcessed,
+ outStream, outSizeFull, &outProcessed);
+ if (res != LZMA_RESULT_OK) {
+ return res;
+ }
+
+ *uncompressedSize = outProcessed;
+ free(state.Probs);
+ return res;
+}
+
+#endif
diff --git a/lib_lzma/LzmaTools.h b/lib_lzma/LzmaTools.h
new file mode 100644
index 0000000..ea51eef
--- /dev/null
+++ b/lib_lzma/LzmaTools.h
@@ -0,0 +1,35 @@
+/*
+ * Usefuls routines based on the LzmaTest.c file from LZMA SDK 4.57
+ *
+ * Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
+ * Luigi 'Comio' Mantellini (luigi.mantellini at idf-hit.com)
+ *
+ * Copyright (C) 1999-2005 Igor Pavlov
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __LZMA_TOOL_H__
+#define __LZMA_TOOL_H__
+
+#include "LzmaTypes.h"
+
+extern int lzmaBuffToBuffDecompress (unsigned char *outStream, SizeT *uncompressedSize,
+ unsigned char *inStream, SizeT length);
+#endif
diff --git a/lib_lzma/LzmaTypes.h b/lib_lzma/LzmaTypes.h
new file mode 100644
index 0000000..5e860c9
--- /dev/null
+++ b/lib_lzma/LzmaTypes.h
@@ -0,0 +1,45 @@
+/*
+LzmaTypes.h
+
+Types for LZMA Decoder
+
+This file written and distributed to public domain by Igor Pavlov.
+This file is part of LZMA SDK 4.40 (2006-05-01)
+*/
+
+#ifndef __LZMATYPES_H
+#define __LZMATYPES_H
+
+#ifndef _7ZIP_BYTE_DEFINED
+#define _7ZIP_BYTE_DEFINED
+typedef unsigned char Byte;
+#endif
+
+#ifndef _7ZIP_UINT16_DEFINED
+#define _7ZIP_UINT16_DEFINED
+typedef unsigned short UInt16;
+#endif
+
+#ifndef _7ZIP_UINT32_DEFINED
+#define _7ZIP_UINT32_DEFINED
+#ifdef _LZMA_UINT32_IS_ULONG
+typedef unsigned long UInt32;
+#else
+typedef unsigned int UInt32;
+#endif
+#endif
+
+/* #define _LZMA_NO_SYSTEM_SIZE_T */
+/* You can use it, if you don't want <stddef.h> */
+
+#ifndef _7ZIP_SIZET_DEFINED
+#define _7ZIP_SIZET_DEFINED
+#ifdef _LZMA_NO_SYSTEM_SIZE_T
+typedef UInt32 SizeT;
+#else
+#include <stddef.h>
+typedef size_t SizeT;
+#endif
+#endif
+
+#endif
diff --git a/lib_lzma/Makefile b/lib_lzma/Makefile
new file mode 100644
index 0000000..e314241
--- /dev/null
+++ b/lib_lzma/Makefile
@@ -0,0 +1,51 @@
+#
+# Copyright (C) 2007-2008 Industrie Dial Face S.p.A.
+# Luigi 'Comio' Mantellini (luigi.mantellini at idf-hit.com)
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)lib_lzma.a
+
+SOBJS =
+
+COBJS-y += LzmaDecode.o \
+ LzmaTools.o
+
+COBJS = $(COBJS-y)
+SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+$(LIB): $(obj).depend $(OBJS)
+ $(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
+
diff --git a/lib_lzma/README.txt b/lib_lzma/README.txt
new file mode 100644
index 0000000..8af698d
--- /dev/null
+++ b/lib_lzma/README.txt
@@ -0,0 +1,28 @@
+The lib_lzma functionality was written by Igor Pavlov.
+The original source cames from the LZMA SDK web page:
+
+URL: http://www.7-zip.org/sdk.html
+Author: Igor Pavlov
+
+The import is made using the import_lzmasdk.sh script that:
+
+* untars the lzmaXYY.tar.bz2 file (from the download web page)
+* copies the files LzmaDecode.h, LzmaTypes.h, LzmaDecode.c, history.txt,
+ LGPL.txt, and lzma.txt from source archive into the lib_lzma directory (pwd).
+
+Example:
+
+ ./import_lzmasdk.sh ~/lzma457.tar.bz2
+
+Notice: The files from lzma sdk are not _modified_ by this script!
+
+The files LzmaTools.{c,h} are provided to export the lzmaBuffToBuffDecompress()
+function that wraps the complex LzmaDecode() function from the LZMA SDK. The
+do_bootm() function uses the lzmaBuffToBuffDecopress() function to expand the
+compressed image.
+
+The directory U-BOOT/include/lzma contains stubs files that permit to use the
+library directly from U-BOOT code without touching the original LZMA SDK's
+files.
+
+Luigi 'Comio' Mantellini <luigi.mantellini at idf-hit.com>
diff --git a/lib_lzma/history.txt b/lib_lzma/history.txt
new file mode 100644
index 0000000..8a035bb
--- /dev/null
+++ b/lib_lzma/history.txt
@@ -0,0 +1,198 @@
+HISTORY of the LZMA SDK
+-----------------------
+
+ 4.57 2007-12-12
+ -------------------------
+ - Speed optimizations in Ñ++ LZMA Decoder.
+ - Small changes for more compatibility with some C/C++ compilers.
+
+
+ 4.49 beta 2007-07-05
+ -------------------------
+ - .7z ANSI-C Decoder:
+ - now it supports BCJ and BCJ2 filters
+ - now it supports files larger than 4 GB.
+ - now it supports "Last Write Time" field for files.
+ - C++ code for .7z archives compressing/decompressing from 7-zip
+ was included to LZMA SDK.
+
+
+ 4.43 2006-06-04
+ -------------------------
+ - Small changes for more compatibility with some C/C++ compilers.
+
+
+ 4.42 2006-05-15
+ -------------------------
+ - Small changes in .h files in ANSI-C version.
+
+
+ 4.39 beta 2006-04-14
+ -------------------------
+ - Bug in versions 4.33b:4.38b was fixed:
+ C++ version of LZMA encoder could not correctly compress
+ files larger than 2 GB with HC4 match finder (-mfhc4).
+
+
+ 4.37 beta 2005-04-06
+ -------------------------
+ - Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined.
+
+
+ 4.35 beta 2005-03-02
+ -------------------------
+ - Bug was fixed in C++ version of LZMA Decoder:
+ If encoded stream was corrupted, decoder could access memory
+ outside of allocated range.
+
+
+ 4.34 beta 2006-02-27
+ -------------------------
+ - Compressing speed and memory requirements for compressing were increased
+ - LZMA now can use only these match finders: HC4, BT2, BT3, BT4
+
+
+ 4.32 2005-12-09
+ -------------------------
+ - Java version of LZMA SDK was included
+
+
+ 4.30 2005-11-20
+ -------------------------
+ - Compression ratio was improved in -a2 mode
+ - Speed optimizations for compressing in -a2 mode
+ - -fb switch now supports values up to 273
+ - Bug in 7z_C (7zIn.c) was fixed:
+ It used Alloc/Free functions from different memory pools.
+ So if program used two memory pools, it worked incorrectly.
+ - 7z_C: .7z format supporting was improved
+ - LZMA# SDK (C#.NET version) was included
+
+
+ 4.27 (Updated) 2005-09-21
+ -------------------------
+ - Some GUIDs/interfaces in C++ were changed.
+ IStream.h:
+ ISequentialInStream::Read now works as old ReadPart
+ ISequentialOutStream::Write now works as old WritePart
+
+
+ 4.27 2005-08-07
+ -------------------------
+ - Bug in LzmaDecodeSize.c was fixed:
+ if _LZMA_IN_CB and _LZMA_OUT_READ were defined,
+ decompressing worked incorrectly.
+
+
+ 4.26 2005-08-05
+ -------------------------
+ - Fixes in 7z_C code and LzmaTest.c:
+ previous versions could work incorrectly,
+ if malloc(0) returns 0
+
+
+ 4.23 2005-06-29
+ -------------------------
+ - Small fixes in C++ code
+
+
+ 4.22 2005-06-10
+ -------------------------
+ - Small fixes
+
+
+ 4.21 2005-06-08
+ -------------------------
+ - Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed
+ - New additional version of ANSI-C LZMA Decoder with zlib-like interface:
+ - LzmaStateDecode.h
+ - LzmaStateDecode.c
+ - LzmaStateTest.c
+ - ANSI-C LZMA Decoder now can decompress files larger than 4 GB
+
+
+ 4.17 2005-04-18
+ -------------------------
+ - New example for RAM->RAM compressing/decompressing:
+ LZMA + BCJ (filter for x86 code):
+ - LzmaRam.h
+ - LzmaRam.cpp
+ - LzmaRamDecode.h
+ - LzmaRamDecode.c
+ - -f86 switch for lzma.exe
+
+
+ 4.16 2005-03-29
+ -------------------------
+ - Bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder):
+ If _LZMA_OUT_READ was defined, and if encoded stream was corrupted,
+ decoder could access memory outside of allocated range.
+ - Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster).
+ Old version of LZMA Decoder now is in file LzmaDecodeSize.c.
+ LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c
+ - Small speed optimization in LZMA C++ code
+ - filter for SPARC's code was added
+ - Simplified version of .7z ANSI-C Decoder was included
+
+
+ 4.06 2004-09-05
+ -------------------------
+ - Bug in v4.05 was fixed:
+ LZMA-Encoder didn't release output stream in some cases.
+
+
+ 4.05 2004-08-25
+ -------------------------
+ - Source code of filters for x86, IA-64, ARM, ARM-Thumb
+ and PowerPC code was included to SDK
+ - Some internal minor changes
+
+
+ 4.04 2004-07-28
+ -------------------------
+ - More compatibility with some C++ compilers
+
+
+ 4.03 2004-06-18
+ -------------------------
+ - "Benchmark" command was added. It measures compressing
+ and decompressing speed and shows rating values.
+ Also it checks hardware errors.
+
+
+ 4.02 2004-06-10
+ -------------------------
+ - C++ LZMA Encoder/Decoder code now is more portable
+ and it can be compiled by GCC on Linux.
+
+
+ 4.01 2004-02-15
+ -------------------------
+ - Some detection of data corruption was enabled.
+ LzmaDecode.c / RangeDecoderReadByte
+ .....
+ {
+ rd->ExtraBytes = 1;
+ return 0xFF;
+ }
+
+
+ 4.00 2004-02-13
+ -------------------------
+ - Original version of LZMA SDK
+
+
+
+HISTORY of the LZMA
+-------------------
+ 2001-2007: Improvements to LZMA compressing/decompressing code,
+ keeping compatibility with original LZMA format
+ 1996-2001: Development of LZMA compression format
+
+ Some milestones:
+
+ 2001-08-30: LZMA compression was added to 7-Zip
+ 1999-01-02: First version of 7-Zip was released
+
+
+End of document
diff --git a/lib_lzma/import_lzmasdk.sh b/lib_lzma/import_lzmasdk.sh
new file mode 100644
index 0000000..3b4e232
--- /dev/null
+++ b/lib_lzma/import_lzmasdk.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+
+usage() {
+ echo "Usage: $0 lzmaVERSION.tar.bz2" >&2
+ echo >&2
+ exit 1
+}
+
+if [ "$1" = "" ] ; then
+ usage
+fi
+
+if [ ! -f $1 ] ; then
+ echo "$1 doesn't exist!" >&2
+ exit 1
+fi
+
+BASENAME=`basename $1 .tar.bz2`
+TMPDIR=/tmp/tmp_lib_$BASENAME
+FILES="C/Compress/Lzma/LzmaDecode.h
+ C/Compress/Lzma/LzmaTypes.h
+ C/Compress/Lzma/LzmaDecode.c
+ history.txt
+ LGPL.txt
+ lzma.txt"
+
+
+mkdir -p $TMPDIR
+echo "Untar $1 -> $TMPDIR"
+tar -jxf $1 -C $TMPDIR
+
+for i in $FILES; do
+ echo Copying $TMPDIR/$i \-\> `basename $i`
+ cp $TMPDIR/$i .
+ chmod -x `basename $i`
+done
+
+echo "done!"
diff --git a/lib_lzma/lzma.txt b/lib_lzma/lzma.txt
new file mode 100644
index 0000000..74935bf
--- /dev/null
+++ b/lib_lzma/lzma.txt
@@ -0,0 +1,663 @@
+LZMA SDK 4.57
+-------------
+
+LZMA SDK Copyright (C) 1999-2007 Igor Pavlov
+
+LZMA SDK provides the documentation, samples, header files, libraries,
+and tools you need to develop applications that use LZMA compression.
+
+LZMA is default and general compression method of 7z format
+in 7-Zip compression program (www.7-zip.org). LZMA provides high
+compression ratio and very fast decompression.
+
+LZMA is an improved version of famous LZ77 compression algorithm.
+It was improved in way of maximum increasing of compression ratio,
+keeping high decompression speed and low memory requirements for
+decompressing.
+
+
+
+LICENSE
+-------
+
+LZMA SDK is available under any of the following licenses:
+
+1) GNU Lesser General Public License (GNU LGPL)
+2) Common Public License (CPL)
+3) Simplified license for unmodified code (read SPECIAL EXCEPTION)
+4) Proprietary license
+
+It means that you can select one of these four options and follow rules of that license.
+
+
+1,2) GNU LGPL and CPL licenses are pretty similar and both these
+licenses are classified as
+ - "Free software licenses" at http://www.gnu.org/
+ - "OSI-approved" at http://www.opensource.org/
+
+
+3) SPECIAL EXCEPTION
+
+Igor Pavlov, as the author of this code, expressly permits you
+to statically or dynamically link your code (or bind by name)
+to the files from LZMA SDK without subjecting your linked
+code to the terms of the CPL or GNU LGPL.
+Any modifications or additions to files from LZMA SDK, however,
+are subject to the GNU LGPL or CPL terms.
+
+SPECIAL EXCEPTION allows you to use LZMA SDK in applications with closed code,
+while you keep LZMA SDK code unmodified.
+
+
+SPECIAL EXCEPTION #2: Igor Pavlov, as the author of this code, expressly permits
+you to use this code under the same terms and conditions contained in the License
+Agreement you have for any previous version of LZMA SDK developed by Igor Pavlov.
+
+SPECIAL EXCEPTION #2 allows owners of proprietary licenses to use latest version
+of LZMA SDK as update for previous versions.
+
+
+SPECIAL EXCEPTION #3: Igor Pavlov, as the author of this code, expressly permits
+you to use code of the following files:
+BranchTypes.h, LzmaTypes.h, LzmaTest.c, LzmaStateTest.c, LzmaAlone.cpp,
+LzmaAlone.cs, LzmaAlone.java
+as public domain code.
+
+
+4) Proprietary license
+
+LZMA SDK also can be available under a proprietary license which
+can include:
+
+1) Right to modify code without subjecting modified code to the
+terms of the CPL or GNU LGPL
+2) Technical support for code
+
+To request such proprietary license or any additional consultations,
+send email message from that page:
+http://www.7-zip.org/support.html
+
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+You should have received a copy of the Common Public License
+along with this library.
+
+
+LZMA SDK Contents
+-----------------
+
+LZMA SDK includes:
+
+ - C++ source code of LZMA compressing and decompressing
+ - ANSI-C compatible source code for LZMA decompressing
+ - C# source code for LZMA compressing and decompressing
+ - Java source code for LZMA compressing and decompressing
+ - Compiled file->file LZMA compressing/decompressing program for Windows system
+
+ANSI-C LZMA decompression code was ported from original C++ sources to C.
+Also it was simplified and optimized for code size.
+But it is fully compatible with LZMA from 7-Zip.
+
+
+UNIX/Linux version
+------------------
+To compile C++ version of file->file LZMA, go to directory
+C/7zip/Compress/LZMA_Alone
+and type "make" or "make clean all" to recompile all.
+
+In some UNIX/Linux versions you must compile LZMA with static libraries.
+To compile with static libraries, change string in makefile
+LIB = -lm
+to string
+LIB = -lm -static
+
+
+Files
+---------------------
+C - C source code
+CPP - CPP source code
+CS - C# source code
+Java - Java source code
+lzma.txt - LZMA SDK description (this file)
+7zFormat.txt - 7z Format description
+7zC.txt - 7z ANSI-C Decoder description (this file)
+methods.txt - Compression method IDs for .7z
+LGPL.txt - GNU Lesser General Public License
+CPL.html - Common Public License
+lzma.exe - Compiled file->file LZMA encoder/decoder for Windows
+history.txt - history of the LZMA SDK
+
+
+Source code structure
+---------------------
+
+C - C files
+ Compress - files related to compression/decompression
+ Lz - files related to LZ (Lempel-Ziv) compression algorithm
+ Lzma - ANSI-C compatible LZMA decompressor
+
+ LzmaDecode.h - interface for LZMA decoding on ANSI-C
+ LzmaDecode.c - LZMA decoding on ANSI-C (new fastest version)
+ LzmaDecodeSize.c - LZMA decoding on ANSI-C (old size-optimized version)
+ LzmaTest.c - test application that decodes LZMA encoded file
+ LzmaTypes.h - basic types for LZMA Decoder
+ LzmaStateDecode.h - interface for LZMA decoding (State version)
+ LzmaStateDecode.c - LZMA decoding on ANSI-C (State version)
+ LzmaStateTest.c - test application (State version)
+
+ Branch - Filters for x86, IA-64, ARM, ARM-Thumb, PowerPC and SPARC code
+
+ Archive - files related to archiving
+ 7z_C - 7z ANSI-C Decoder
+
+
+CPP -- CPP files
+
+ Common - common files for C++ projects
+ Windows - common files for Windows related code
+ 7zip - files related to 7-Zip Project
+
+ Common - common files for 7-Zip
+
+ Compress - files related to compression/decompression
+
+ LZ - files related to LZ (Lempel-Ziv) compression algorithm
+
+ Copy - Copy coder
+ RangeCoder - Range Coder (special code of compression/decompression)
+ LZMA - LZMA compression/decompression on C++
+ LZMA_Alone - file->file LZMA compression/decompression
+
+ Branch - Filters for x86, IA-64, ARM, ARM-Thumb, PowerPC and SPARC code
+
+ Archive - files related to archiving
+
+ Common - common files for archive handling
+ 7z - 7z C++ Encoder/Decoder
+
+ Bundles - Modules that are bundles of other modules
+
+ Alone7z - 7zr.exe: Standalone version of 7z.exe that supports only 7z/LZMA/BCJ/BCJ2
+ Format7zR - 7zr.dll: Reduced version of 7za.dll: extracting/compressing to 7z/LZMA/BCJ/BCJ2
+ Format7zExtractR - 7zxr.dll: Reduced version of 7zxa.dll: extracting from 7z/LZMA/BCJ/BCJ2.
+
+ UI - User Interface files
+
+ Client7z - Test application for 7za.dll, 7zr.dll, 7zxr.dll
+ Common - Common UI files
+ Console - Code for console archiver
+
+
+
+CS - C# files
+ 7zip
+ Common - some common files for 7-Zip
+ Compress - files related to compression/decompression
+ LZ - files related to LZ (Lempel-Ziv) compression algorithm
+ LZMA - LZMA compression/decompression
+ LzmaAlone - file->file LZMA compression/decompression
+ RangeCoder - Range Coder (special code of compression/decompression)
+
+Java - Java files
+ SevenZip
+ Compression - files related to compression/decompression
+ LZ - files related to LZ (Lempel-Ziv) compression algorithm
+ LZMA - LZMA compression/decompression
+ RangeCoder - Range Coder (special code of compression/decompression)
+
+C/C++ source code of LZMA SDK is part of 7-Zip project.
+
+You can find ANSI-C LZMA decompressing code at folder
+ C/7zip/Compress/Lzma
+7-Zip doesn't use that ANSI-C LZMA code and that code was developed
+specially for this SDK. And files from C/7zip/Compress/Lzma do not need
+files from other directories of SDK for compiling.
+
+7-Zip source code can be downloaded from 7-Zip's SourceForge page:
+
+ http://sourceforge.net/projects/sevenzip/
+
+
+LZMA features
+-------------
+ - Variable dictionary size (up to 1 GB)
+ - Estimated compressing speed: about 1 MB/s on 1 GHz CPU
+ - Estimated decompressing speed:
+ - 8-12 MB/s on 1 GHz Intel Pentium 3 or AMD Athlon
+ - 500-1000 KB/s on 100 MHz ARM, MIPS, PowerPC or other simple RISC
+ - Small memory requirements for decompressing (8-32 KB + DictionarySize)
+ - Small code size for decompressing: 2-8 KB (depending from
+ speed optimizations)
+
+LZMA decoder uses only integer operations and can be
+implemented in any modern 32-bit CPU (or on 16-bit CPU with some conditions).
+
+Some critical operations that affect to speed of LZMA decompression:
+ 1) 32*16 bit integer multiply
+ 2) Misspredicted branches (penalty mostly depends from pipeline length)
+ 3) 32-bit shift and arithmetic operations
+
+Speed of LZMA decompressing mostly depends from CPU speed.
+Memory speed has no big meaning. But if your CPU has small data cache,
+overall weight of memory speed will slightly increase.
+
+
+How To Use
+----------
+
+Using LZMA encoder/decoder executable
+--------------------------------------
+
+Usage: LZMA <e|d> inputFile outputFile [<switches>...]
+
+ e: encode file
+
+ d: decode file
+
+ b: Benchmark. There are two tests: compressing and decompressing
+ with LZMA method. Benchmark shows rating in MIPS (million
+ instructions per second). Rating value is calculated from
+ measured speed and it is normalized with AMD Athlon 64 X2 CPU
+ results. Also Benchmark checks possible hardware errors (RAM
+ errors in most cases). Benchmark uses these settings:
+ (-a1, -d21, -fb32, -mfbt4). You can change only -d. Also you
+ can change number of iterations. Example for 30 iterations:
+ LZMA b 30
+ Default number of iterations is 10.
+
+<Switches>
+
+
+ -a{N}: set compression mode 0 = fast, 1 = normal
+ default: 1 (normal)
+
+ d{N}: Sets Dictionary size - [0, 30], default: 23 (8MB)
+ The maximum value for dictionary size is 1 GB = 2^30 bytes.
+ Dictionary size is calculated as DictionarySize = 2^N bytes.
+ For decompressing file compressed by LZMA method with dictionary
+ size D = 2^N you need about D bytes of memory (RAM).
+
+ -fb{N}: set number of fast bytes - [5, 273], default: 128
+ Usually big number gives a little bit better compression ratio
+ and slower compression process.
+
+ -lc{N}: set number of literal context bits - [0, 8], default: 3
+ Sometimes lc=4 gives gain for big files.
+
+ -lp{N}: set number of literal pos bits - [0, 4], default: 0
+ lp switch is intended for periodical data when period is
+ equal 2^N. For example, for 32-bit (4 bytes)
+ periodical data you can use lp=2. Often it's better to set lc0,
+ if you change lp switch.
+
+ -pb{N}: set number of pos bits - [0, 4], default: 2
+ pb switch is intended for periodical data
+ when period is equal 2^N.
+
+ -mf{MF_ID}: set Match Finder. Default: bt4.
+ Algorithms from hc* group doesn't provide good compression
+ ratio, but they often works pretty fast in combination with
+ fast mode (-a0).
+
+ Memory requirements depend from dictionary size
+ (parameter "d" in table below).
+
+ MF_ID Memory Description
+
+ bt2 d * 9.5 + 4MB Binary Tree with 2 bytes hashing.
+ bt3 d * 11.5 + 4MB Binary Tree with 3 bytes hashing.
+ bt4 d * 11.5 + 4MB Binary Tree with 4 bytes hashing.
+ hc4 d * 7.5 + 4MB Hash Chain with 4 bytes hashing.
+
+ -eos: write End Of Stream marker. By default LZMA doesn't write
+ eos marker, since LZMA decoder knows uncompressed size
+ stored in .lzma file header.
+
+ -si: Read data from stdin (it will write End Of Stream marker).
+ -so: Write data to stdout
+
+
+Examples:
+
+1) LZMA e file.bin file.lzma -d16 -lc0
+
+compresses file.bin to file.lzma with 64 KB dictionary (2^16=64K)
+and 0 literal context bits. -lc0 allows to reduce memory requirements
+for decompression.
+
+
+2) LZMA e file.bin file.lzma -lc0 -lp2
+
+compresses file.bin to file.lzma with settings suitable
+for 32-bit periodical data (for example, ARM or MIPS code).
+
+3) LZMA d file.lzma file.bin
+
+decompresses file.lzma to file.bin.
+
+
+Compression ratio hints
+-----------------------
+
+Recommendations
+---------------
+
+To increase compression ratio for LZMA compressing it's desirable
+to have aligned data (if it's possible) and also it's desirable to locate
+data in such order, where code is grouped in one place and data is
+grouped in other place (it's better than such mixing: code, data, code,
+data, ...).
+
+
+Using Filters
+-------------
+You can increase compression ratio for some data types, using
+special filters before compressing. For example, it's possible to
+increase compression ratio on 5-10% for code for those CPU ISAs:
+x86, IA-64, ARM, ARM-Thumb, PowerPC, SPARC.
+
+You can find C/C++ source code of such filters in folder "7zip/Compress/Branch"
+
+You can check compression ratio gain of these filters with such
+7-Zip commands (example for ARM code):
+No filter:
+ 7z a a1.7z a.bin -m0=lzma
+
+With filter for little-endian ARM code:
+ 7z a a2.7z a.bin -m0=bc_arm -m1=lzma
+
+With filter for big-endian ARM code (using additional Swap4 filter):
+ 7z a a3.7z a.bin -m0=swap4 -m1=bc_arm -m2=lzma
+
+It works in such manner:
+Compressing = Filter_encoding + LZMA_encoding
+Decompressing = LZMA_decoding + Filter_decoding
+
+Compressing and decompressing speed of such filters is very high,
+so it will not increase decompressing time too much.
+Moreover, it reduces decompression time for LZMA_decoding,
+since compression ratio with filtering is higher.
+
+These filters convert CALL (calling procedure) instructions
+from relative offsets to absolute addresses, so such data becomes more
+compressible. Source code of these CALL filters is pretty simple
+(about 20 lines of C++), so you can convert it from C++ version yourself.
+
+For some ISAs (for example, for MIPS) it's impossible to get gain from such filter.
+
+
+LZMA compressed file format
+---------------------------
+Offset Size Description
+ 0 1 Special LZMA properties for compressed data
+ 1 4 Dictionary size (little endian)
+ 5 8 Uncompressed size (little endian). -1 means unknown size
+ 13 Compressed data
+
+
+ANSI-C LZMA Decoder
+~~~~~~~~~~~~~~~~~~~
+
+To compile ANSI-C LZMA Decoder you can use one of the following files sets:
+1) LzmaDecode.h + LzmaDecode.c + LzmaTest.c (fastest version)
+2) LzmaDecode.h + LzmaDecodeSize.c + LzmaTest.c (old size-optimized version)
+3) LzmaStateDecode.h + LzmaStateDecode.c + LzmaStateTest.c (zlib-like interface)
+
+
+Memory requirements for LZMA decoding
+-------------------------------------
+
+LZMA decoder doesn't allocate memory itself, so you must
+allocate memory and send it to LZMA.
+
+Stack usage of LZMA decoding function for local variables is not
+larger than 200 bytes.
+
+How To decompress data
+----------------------
+
+LZMA Decoder (ANSI-C version) now supports 5 interfaces:
+1) Single-call Decompressing
+2) Single-call Decompressing with input stream callback
+3) Multi-call Decompressing with output buffer
+4) Multi-call Decompressing with input callback and output buffer
+5) Multi-call State Decompressing (zlib-like interface)
+
+Variant-5 is similar to Variant-4, but Variant-5 doesn't use callback functions.
+
+Decompressing steps
+-------------------
+
+1) read LZMA properties (5 bytes):
+ unsigned char properties[LZMA_PROPERTIES_SIZE];
+
+2) read uncompressed size (8 bytes, little-endian)
+
+3) Decode properties:
+
+ CLzmaDecoderState state; /* it's 24-140 bytes structure, if int is 32-bit */
+
+ if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK)
+ return PrintError(rs, "Incorrect stream properties");
+
+4) Allocate memory block for internal Structures:
+
+ state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
+ if (state.Probs == 0)
+ return PrintError(rs, kCantAllocateMessage);
+
+ LZMA decoder uses array of CProb variables as internal structure.
+ By default, CProb is unsigned_short. But you can define _LZMA_PROB32 to make
+ it unsigned_int. It can increase speed on some 32-bit CPUs, but memory
+ usage will be doubled in that case.
+
+
+5) Main Decompressing
+
+You must use one of the following interfaces:
+
+5.1 Single-call Decompressing
+-----------------------------
+When to use: RAM->RAM decompressing
+Compile files: LzmaDecode.h, LzmaDecode.c
+Compile defines: no defines
+Memory Requirements:
+ - Input buffer: compressed size
+ - Output buffer: uncompressed size
+ - LZMA Internal Structures (~16 KB for default settings)
+
+Interface:
+ int res = LzmaDecode(&state,
+ inStream, compressedSize, &inProcessed,
+ outStream, outSize, &outProcessed);
+
+
+5.2 Single-call Decompressing with input stream callback
+--------------------------------------------------------
+When to use: File->RAM or Flash->RAM decompressing.
+Compile files: LzmaDecode.h, LzmaDecode.c
+Compile defines: _LZMA_IN_CB
+Memory Requirements:
+ - Buffer for input stream: any size (for example, 16 KB)
+ - Output buffer: uncompressed size
+ - LZMA Internal Structures (~16 KB for default settings)
+
+Interface:
+ typedef struct _CBuffer
+ {
+ ILzmaInCallback InCallback;
+ FILE *File;
+ unsigned char Buffer[kInBufferSize];
+ } CBuffer;
+
+ int LzmaReadCompressed(void *object, const unsigned char **buffer, SizeT *size)
+ {
+ CBuffer *bo = (CBuffer *)object;
+ *buffer = bo->Buffer;
+ *size = MyReadFile(bo->File, bo->Buffer, kInBufferSize);
+ return LZMA_RESULT_OK;
+ }
+
+ CBuffer g_InBuffer;
+
+ g_InBuffer.File = inFile;
+ g_InBuffer.InCallback.Read = LzmaReadCompressed;
+ int res = LzmaDecode(&state,
+ &g_InBuffer.InCallback,
+ outStream, outSize, &outProcessed);
+
+
+5.3 Multi-call decompressing with output buffer
+-----------------------------------------------
+When to use: RAM->File decompressing
+Compile files: LzmaDecode.h, LzmaDecode.c
+Compile defines: _LZMA_OUT_READ
+Memory Requirements:
+ - Input buffer: compressed size
+ - Buffer for output stream: any size (for example, 16 KB)
+ - LZMA Internal Structures (~16 KB for default settings)
+ - LZMA dictionary (dictionary size is encoded in stream properties)
+
+Interface:
+
+ state.Dictionary = (unsigned char *)malloc(state.Properties.DictionarySize);
+
+ LzmaDecoderInit(&state);
+ do
+ {
+ LzmaDecode(&state,
+ inBuffer, inAvail, &inProcessed,
+ g_OutBuffer, outAvail, &outProcessed);
+ inAvail -= inProcessed;
+ inBuffer += inProcessed;
+ }
+ while you need more bytes
+
+ see LzmaTest.c for more details.
+
+
+5.4 Multi-call decompressing with input callback and output buffer
+------------------------------------------------------------------
+When to use: File->File decompressing
+Compile files: LzmaDecode.h, LzmaDecode.c
+Compile defines: _LZMA_IN_CB, _LZMA_OUT_READ
+Memory Requirements:
+ - Buffer for input stream: any size (for example, 16 KB)
+ - Buffer for output stream: any size (for example, 16 KB)
+ - LZMA Internal Structures (~16 KB for default settings)
+ - LZMA dictionary (dictionary size is encoded in stream properties)
+
+Interface:
+
+ state.Dictionary = (unsigned char *)malloc(state.Properties.DictionarySize);
+
+ LzmaDecoderInit(&state);
+ do
+ {
+ LzmaDecode(&state,
+ &bo.InCallback,
+ g_OutBuffer, outAvail, &outProcessed);
+ }
+ while you need more bytes
+
+ see LzmaTest.c for more details:
+
+
+5.5 Multi-call State Decompressing (zlib-like interface)
+------------------------------------------------------------------
+When to use: file->file decompressing
+Compile files: LzmaStateDecode.h, LzmaStateDecode.c
+Compile defines:
+Memory Requirements:
+ - Buffer for input stream: any size (for example, 16 KB)
+ - Buffer for output stream: any size (for example, 16 KB)
+ - LZMA Internal Structures (~16 KB for default settings)
+ - LZMA dictionary (dictionary size is encoded in stream properties)
+
+Interface:
+
+ state.Dictionary = (unsigned char *)malloc(state.Properties.DictionarySize);
+
+
+ LzmaDecoderInit(&state);
+ do
+ {
+ res = LzmaDecode(&state,
+ inBuffer, inAvail, &inProcessed,
+ g_OutBuffer, outAvail, &outProcessed,
+ finishDecoding);
+ inAvail -= inProcessed;
+ inBuffer += inProcessed;
+ }
+ while you need more bytes
+
+ see LzmaStateTest.c for more details:
+
+
+6) Free all allocated blocks
+
+
+Note
+----
+LzmaDecodeSize.c is size-optimized version of LzmaDecode.c.
+But compiled code of LzmaDecodeSize.c can be larger than
+compiled code of LzmaDecode.c. So it's better to use
+LzmaDecode.c in most cases.
+
+
+EXIT codes
+-----------
+
+LZMA decoder can return one of the following codes:
+
+#define LZMA_RESULT_OK 0
+#define LZMA_RESULT_DATA_ERROR 1
+
+If you use callback function for input data and you return some
+error code, LZMA Decoder also returns that code.
+
+
+
+LZMA Defines
+------------
+
+_LZMA_IN_CB - Use callback for input data
+
+_LZMA_OUT_READ - Use read function for output data
+
+_LZMA_LOC_OPT - Enable local speed optimizations inside code.
+ _LZMA_LOC_OPT is only for LzmaDecodeSize.c (size-optimized version).
+ _LZMA_LOC_OPT doesn't affect LzmaDecode.c (speed-optimized version)
+ and LzmaStateDecode.c
+
+_LZMA_PROB32 - It can increase speed on some 32-bit CPUs,
+ but memory usage will be doubled in that case
+
+_LZMA_UINT32_IS_ULONG - Define it if int is 16-bit on your compiler
+ and long is 32-bit.
+
+_LZMA_SYSTEM_SIZE_T - Define it if you want to use system's size_t.
+ You can use it to enable 64-bit sizes supporting
+
+
+
+C++ LZMA Encoder/Decoder
+~~~~~~~~~~~~~~~~~~~~~~~~
+C++ LZMA code use COM-like interfaces. So if you want to use it,
+you can study basics of COM/OLE.
+
+By default, LZMA Encoder contains all Match Finders.
+But for compressing it's enough to have just one of them.
+So for reducing size of compressing code you can define:
+ #define COMPRESS_MF_BT
+ #define COMPRESS_MF_BT4
+and it will use only bt4 match finder.
+
+
+---
+
+http://www.7-zip.org
+http://www.7-zip.org/support.html
--
1.5.4.3
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