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This commit is contained in:
Igor Pavlov
2018-03-12 11:19:17 +00:00
committed by Kornel
parent 866a06f5a0
commit f19b649c73
81 changed files with 8243 additions and 1296 deletions
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190
C/Xz.h
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@@ -1,5 +1,5 @@
/* Xz.h - Xz interface
2017-07-27 : Igor Pavlov : Public domain */
2018-02-28 : Igor Pavlov : Public domain */
#ifndef __XZ_H
#define __XZ_H
@@ -139,6 +139,9 @@ SRes Xzs_ReadBackward(CXzs *p, ILookInStream *inStream, Int64 *startOffset, ICom
UInt64 Xzs_GetNumBlocks(const CXzs *p);
UInt64 Xzs_GetUnpackSize(const CXzs *p);
// ECoderStatus values are identical to ELzmaStatus values of LZMA2 decoder
typedef enum
{
CODER_STATUS_NOT_SPECIFIED, /* use main error code instead */
@@ -147,22 +150,31 @@ typedef enum
CODER_STATUS_NEEDS_MORE_INPUT /* you must provide more input bytes */
} ECoderStatus;
// ECoderFinishMode values are identical to ELzmaFinishMode
typedef enum
{
CODER_FINISH_ANY, /* finish at any point */
CODER_FINISH_END /* block must be finished at the end */
} ECoderFinishMode;
typedef struct _IStateCoder
{
void *p;
void (*Free)(void *p, ISzAllocPtr alloc);
SRes (*SetProps)(void *p, const Byte *props, size_t propSize, ISzAllocPtr alloc);
void (*Init)(void *p);
SRes (*Code)(void *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
int srcWasFinished, ECoderFinishMode finishMode, int *wasFinished);
SRes (*Code2)(void *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
int srcWasFinished, ECoderFinishMode finishMode,
// int *wasFinished,
ECoderStatus *status);
SizeT (*Filter)(void *p, Byte *data, SizeT size);
} IStateCoder;
#define MIXCODER_NUM_FILTERS_MAX 4
typedef struct
@@ -170,20 +182,23 @@ typedef struct
ISzAllocPtr alloc;
Byte *buf;
unsigned numCoders;
Byte *outBuf;
size_t outBufSize;
size_t outWritten; // is equal to lzmaDecoder.dicPos (in outBuf mode)
Bool wasFinished;
SRes res;
ECoderStatus status;
// Bool SingleBufMode;
int finished[MIXCODER_NUM_FILTERS_MAX - 1];
size_t pos[MIXCODER_NUM_FILTERS_MAX - 1];
size_t size[MIXCODER_NUM_FILTERS_MAX - 1];
UInt64 ids[MIXCODER_NUM_FILTERS_MAX];
SRes results[MIXCODER_NUM_FILTERS_MAX];
IStateCoder coders[MIXCODER_NUM_FILTERS_MAX];
} CMixCoder;
void MixCoder_Construct(CMixCoder *p, ISzAllocPtr alloc);
void MixCoder_Free(CMixCoder *p);
void MixCoder_Init(CMixCoder *p);
SRes MixCoder_SetFromMethod(CMixCoder *p, unsigned coderIndex, UInt64 methodId);
SRes MixCoder_Code(CMixCoder *p, Byte *dest, SizeT *destLen,
const Byte *src, SizeT *srcLen, int srcWasFinished,
ECoderFinishMode finishMode, ECoderStatus *status);
typedef enum
{
@@ -197,6 +212,7 @@ typedef enum
XZ_STATE_BLOCK_FOOTER
} EXzState;
typedef struct
{
EXzState state;
@@ -210,7 +226,7 @@ typedef struct
UInt64 packSize;
UInt64 unpackSize;
UInt64 numBlocks;
UInt64 numBlocks; // number of finished blocks in current stream
UInt64 indexSize;
UInt64 indexPos;
UInt64 padSize;
@@ -225,16 +241,64 @@ typedef struct
CXzCheck check;
CSha256 sha;
Bool parseMode;
Bool headerParsedOk;
Bool decodeToStreamSignature;
unsigned decodeOnlyOneBlock;
Byte *outBuf;
size_t outBufSize;
size_t outDataWritten; // the size of data in (outBuf) that were fully unpacked
Byte shaDigest[SHA256_DIGEST_SIZE];
Byte buf[XZ_BLOCK_HEADER_SIZE_MAX];
} CXzUnpacker;
/* alloc : aligned for cache line allocation is better */
void XzUnpacker_Construct(CXzUnpacker *p, ISzAllocPtr alloc);
void XzUnpacker_Init(CXzUnpacker *p);
void XzUnpacker_SetOutBuf(CXzUnpacker *p, Byte *outBuf, size_t outBufSize);
void XzUnpacker_Free(CXzUnpacker *p);
/*
XzUnpacker
The sequence for decoding functions:
{
XzUnpacker_Construct()
[Decoding_Calls]
XzUnpacker_Free()
}
[Decoding_Calls]
There are 3 types of interfaces for [Decoding_Calls] calls:
Interface-1 : Partial output buffers:
{
XzUnpacker_Init()
for()
XzUnpacker_Code();
}
Interface-2 : Direct output buffer:
Use it, if you know exact size of decoded data, and you need
whole xz unpacked data in one output buffer.
xz unpacker doesn't allocate additional buffer for lzma2 dictionary in that mode.
{
XzUnpacker_Init()
XzUnpacker_SetOutBufMode(); // to set output buffer and size
for()
XzUnpacker_Code(); // (dest = NULL) in XzUnpacker_Code()
}
Interface-3 : Direct output buffer : One call full decoding
It unpacks whole input buffer to output buffer in one call.
It uses Interface-2 internally.
{
XzUnpacker_CodeFull()
}
*/
/*
finishMode:
It has meaning only if the decoding reaches output limit (*destLen).
@@ -264,15 +328,23 @@ Returns:
SRes XzUnpacker_Code(CXzUnpacker *p, Byte *dest, SizeT *destLen,
const Byte *src, SizeT *srcLen, ECoderFinishMode finishMode,
ECoderStatus *status);
const Byte *src, SizeT *srcLen, int srcFinished,
ECoderFinishMode finishMode, ECoderStatus *status);
SRes XzUnpacker_CodeFull(CXzUnpacker *p, Byte *dest, SizeT *destLen,
const Byte *src, SizeT *srcLen,
ECoderFinishMode finishMode, ECoderStatus *status);
Bool XzUnpacker_IsStreamWasFinished(const CXzUnpacker *p);
/*
Call XzUnpacker_GetExtraSize after XzUnpacker_Code function to detect real size of
xz stream in two cases:
XzUnpacker_Code() returns:
XzUnpacker_GetExtraSize() returns then number of uncofirmed bytes,
if it's in (XZ_STATE_STREAM_HEADER) state or in (XZ_STATE_STREAM_PADDING) state.
These bytes can be some bytes after xz archive, or
it can be start of new xz stream.
Call XzUnpacker_GetExtraSize() after XzUnpacker_Code() function to detect real size of
xz stream in two cases, if XzUnpacker_Code() returns:
res == SZ_OK && status == CODER_STATUS_NEEDS_MORE_INPUT
res == SZ_ERROR_NO_ARCHIVE
*/
@@ -297,6 +369,92 @@ Bool XzUnpacker_IsBlockFinished(const CXzUnpacker *p);
#define XzUnpacker_GetPackSizeForIndex(p) ((p)->packSize + (p)->blockHeaderSize + XzFlags_GetCheckSize((p)->streamFlags))
/* ---------- Multi Threading Decoding ---------- */
typedef struct
{
size_t inBufSize_ST;
size_t outStep_ST;
Bool ignoreErrors;
#ifndef _7ZIP_ST
unsigned numThreads;
size_t inBufSize_MT;
size_t memUseMax;
#endif
} CXzDecMtProps;
void XzDecMtProps_Init(CXzDecMtProps *p);
typedef void * CXzDecMtHandle;
/*
alloc : XzDecMt uses CAlignOffsetAlloc for addresses allocated by (alloc).
allocMid : for big allocations, aligned allocation is better
*/
CXzDecMtHandle XzDecMt_Create(ISzAllocPtr alloc, ISzAllocPtr allocMid);
void XzDecMt_Destroy(CXzDecMtHandle p);
typedef struct
{
Byte UnpackSize_Defined;
Byte NumStreams_Defined;
Byte NumBlocks_Defined;
Byte DataAfterEnd;
Byte DecodingTruncated; // Decoding was Truncated, we need only partial output data
UInt64 InSize; // pack size processed
UInt64 OutSize;
UInt64 NumStreams;
UInt64 NumBlocks;
SRes DecodeRes;
SRes ReadRes;
SRes ProgressRes;
SRes CombinedRes;
SRes CombinedRes_Type;
} CXzStatInfo;
void XzStatInfo_Clear(CXzStatInfo *p);
/*
XzDecMt_Decode()
SRes:
SZ_OK - OK
SZ_ERROR_MEM - Memory allocation error
SZ_ERROR_NO_ARCHIVE - is not xz archive
SZ_ERROR_ARCHIVE - Headers error
SZ_ERROR_DATA - Data Error
SZ_ERROR_CRC - CRC Error
SZ_ERROR_INPUT_EOF - it needs more input data
SZ_ERROR_WRITE - ISeqOutStream error
(SZ_ERROR_READ) - ISeqInStream errors
(SZ_ERROR_PROGRESS) - ICompressProgress errors
// SZ_ERROR_THREAD - error in multi-threading functions
MY_SRes_HRESULT_FROM_WRes(WRes_error) - error in multi-threading function
*/
SRes XzDecMt_Decode(CXzDecMtHandle p,
const CXzDecMtProps *props,
const UInt64 *outDataSize, // NULL means undefined
int finishMode, // 0 - partial unpacking is allowed, 1 - xz stream(s) must be finished
ISeqOutStream *outStream,
// Byte *outBuf, size_t *outBufSize,
ISeqInStream *inStream,
// const Byte *inData, size_t inDataSize,
CXzStatInfo *stat,
int *isMT, // 0 means that ST (Single-Thread) version was used
ICompressProgress *progress);
EXTERN_C_END
#endif