2
2010-09-17 : Igor Pavlov : Public domain */
11
#define XZ_ID_Subblock 1
19
#define XZ_ID_LZMA2 0x21
21
unsigned Xz_ReadVarInt(const Byte *p, size_t maxSize, UInt64 *value);
22
unsigned Xz_WriteVarInt(Byte *buf, UInt64 v);
24
/* ---------- xz block ---------- */
26
#define XZ_BLOCK_HEADER_SIZE_MAX 1024
28
#define XZ_NUM_FILTERS_MAX 4
29
#define XZ_BF_NUM_FILTERS_MASK 3
30
#define XZ_BF_PACK_SIZE (1 << 6)
31
#define XZ_BF_UNPACK_SIZE (1 << 7)
33
#define XZ_FILTER_PROPS_SIZE_MAX 20
39
Byte props[XZ_FILTER_PROPS_SIZE_MAX];
47
CXzFilter filters[XZ_NUM_FILTERS_MAX];
50
#define XzBlock_GetNumFilters(p) (((p)->flags & XZ_BF_NUM_FILTERS_MASK) + 1)
51
#define XzBlock_HasPackSize(p) (((p)->flags & XZ_BF_PACK_SIZE) != 0)
52
#define XzBlock_HasUnpackSize(p) (((p)->flags & XZ_BF_UNPACK_SIZE) != 0)
54
SRes XzBlock_Parse(CXzBlock *p, const Byte *header);
55
SRes XzBlock_ReadHeader(CXzBlock *p, ISeqInStream *inStream, Bool *isIndex, UInt32 *headerSizeRes);
57
/* ---------- xz stream ---------- */
60
#define XZ_FOOTER_SIG_SIZE 2
62
extern Byte XZ_SIG[XZ_SIG_SIZE];
63
extern Byte XZ_FOOTER_SIG[XZ_FOOTER_SIG_SIZE];
65
#define XZ_STREAM_FLAGS_SIZE 2
66
#define XZ_STREAM_CRC_SIZE 4
68
#define XZ_STREAM_HEADER_SIZE (XZ_SIG_SIZE + XZ_STREAM_FLAGS_SIZE + XZ_STREAM_CRC_SIZE)
69
#define XZ_STREAM_FOOTER_SIZE (XZ_FOOTER_SIG_SIZE + XZ_STREAM_FLAGS_SIZE + XZ_STREAM_CRC_SIZE + 4)
71
#define XZ_CHECK_MASK 0xF
73
#define XZ_CHECK_CRC32 1
74
#define XZ_CHECK_CRC64 4
75
#define XZ_CHECK_SHA256 10
85
void XzCheck_Init(CXzCheck *p, int mode);
86
void XzCheck_Update(CXzCheck *p, const void *data, size_t size);
87
int XzCheck_Final(CXzCheck *p, Byte *digest);
89
typedef UInt16 CXzStreamFlags;
91
#define XzFlags_IsSupported(f) ((f) <= XZ_CHECK_MASK)
92
#define XzFlags_GetCheckType(f) ((f) & XZ_CHECK_MASK)
93
#define XzFlags_HasDataCrc32(f) (Xz_GetCheckType(f) == XZ_CHECK_CRC32)
94
unsigned XzFlags_GetCheckSize(CXzStreamFlags f);
96
SRes Xz_ParseHeader(CXzStreamFlags *p, const Byte *buf);
97
SRes Xz_ReadHeader(CXzStreamFlags *p, ISeqInStream *inStream);
107
CXzStreamFlags flags;
109
size_t numBlocksAllocated;
110
CXzBlockSizes *blocks;
114
void Xz_Construct(CXzStream *p);
115
void Xz_Free(CXzStream *p, ISzAlloc *alloc);
117
#define XZ_SIZE_OVERFLOW ((UInt64)(Int64)-1)
119
UInt64 Xz_GetUnpackSize(const CXzStream *p);
120
UInt64 Xz_GetPackSize(const CXzStream *p);
129
void Xzs_Construct(CXzs *p);
130
void Xzs_Free(CXzs *p, ISzAlloc *alloc);
131
SRes Xzs_ReadBackward(CXzs *p, ILookInStream *inStream, Int64 *startOffset, ICompressProgress *progress, ISzAlloc *alloc);
133
UInt64 Xzs_GetNumBlocks(const CXzs *p);
134
UInt64 Xzs_GetUnpackSize(const CXzs *p);
138
CODER_STATUS_NOT_SPECIFIED, /* use main error code instead */
139
CODER_STATUS_FINISHED_WITH_MARK, /* stream was finished with end mark. */
140
CODER_STATUS_NOT_FINISHED, /* stream was not finished */
141
CODER_STATUS_NEEDS_MORE_INPUT /* you must provide more input bytes */
146
CODER_FINISH_ANY, /* finish at any point */
147
CODER_FINISH_END /* block must be finished at the end */
150
typedef struct _IStateCoder
153
void (*Free)(void *p, ISzAlloc *alloc);
154
SRes (*SetProps)(void *p, const Byte *props, size_t propSize, ISzAlloc *alloc);
155
void (*Init)(void *p);
156
SRes (*Code)(void *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
157
int srcWasFinished, ECoderFinishMode finishMode, int *wasFinished);
160
#define MIXCODER_NUM_FILTERS_MAX 4
167
int finished[MIXCODER_NUM_FILTERS_MAX - 1];
168
size_t pos[MIXCODER_NUM_FILTERS_MAX - 1];
169
size_t size[MIXCODER_NUM_FILTERS_MAX - 1];
170
UInt64 ids[MIXCODER_NUM_FILTERS_MAX];
171
IStateCoder coders[MIXCODER_NUM_FILTERS_MAX];
174
void MixCoder_Construct(CMixCoder *p, ISzAlloc *alloc);
175
void MixCoder_Free(CMixCoder *p);
176
void MixCoder_Init(CMixCoder *p);
177
SRes MixCoder_SetFromMethod(CMixCoder *p, int coderIndex, UInt64 methodId);
178
SRes MixCoder_Code(CMixCoder *p, Byte *dest, SizeT *destLen,
179
const Byte *src, SizeT *srcLen, int srcWasFinished,
180
ECoderFinishMode finishMode, ECoderStatus *status);
184
XZ_STATE_STREAM_HEADER,
185
XZ_STATE_STREAM_INDEX,
186
XZ_STATE_STREAM_INDEX_CRC,
187
XZ_STATE_STREAM_FOOTER,
188
XZ_STATE_STREAM_PADDING,
189
XZ_STATE_BLOCK_HEADER,
191
XZ_STATE_BLOCK_FOOTER
199
unsigned indexPreSize;
201
CXzStreamFlags streamFlags;
203
UInt32 blockHeaderSize;
219
Byte shaDigest[SHA256_DIGEST_SIZE];
220
Byte buf[XZ_BLOCK_HEADER_SIZE_MAX];
223
SRes XzUnpacker_Create(CXzUnpacker *p, ISzAlloc *alloc);
224
void XzUnpacker_Free(CXzUnpacker *p);
228
It has meaning only if the decoding reaches output limit (*destLen).
229
LZMA_FINISH_ANY - use smallest number of input bytes
230
LZMA_FINISH_END - read EndOfStream marker after decoding
235
LZMA_STATUS_FINISHED_WITH_MARK
236
LZMA_STATUS_NOT_FINISHED
237
SZ_ERROR_DATA - Data error
238
SZ_ERROR_MEM - Memory allocation error
239
SZ_ERROR_UNSUPPORTED - Unsupported properties
240
SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
244
SRes XzUnpacker_Code(CXzUnpacker *p, Byte *dest, SizeT *destLen,
245
const Byte *src, SizeT *srcLen, /* int srcWasFinished, */ int finishMode,
246
ECoderStatus *status);
248
Bool XzUnpacker_IsStreamWasFinished(CXzUnpacker *p);
2
2010-09-17 : Igor Pavlov : Public domain */
9
#define SHA256_DIGEST_SIZE 32
13
#define XZ_ID_Subblock 1
21
#define XZ_ID_LZMA2 0x21
23
unsigned Xz_ReadVarInt(const Byte *p, size_t maxSize, UInt64 *value);
24
unsigned Xz_WriteVarInt(Byte *buf, UInt64 v);
26
/* ---------- xz block ---------- */
28
#define XZ_BLOCK_HEADER_SIZE_MAX 1024
30
#define XZ_NUM_FILTERS_MAX 4
31
#define XZ_BF_NUM_FILTERS_MASK 3
32
#define XZ_BF_PACK_SIZE (1 << 6)
33
#define XZ_BF_UNPACK_SIZE (1 << 7)
35
#define XZ_FILTER_PROPS_SIZE_MAX 20
41
Byte props[XZ_FILTER_PROPS_SIZE_MAX];
49
CXzFilter filters[XZ_NUM_FILTERS_MAX];
52
#define XzBlock_GetNumFilters(p) (((p)->flags & XZ_BF_NUM_FILTERS_MASK) + 1)
53
#define XzBlock_HasPackSize(p) (((p)->flags & XZ_BF_PACK_SIZE) != 0)
54
#define XzBlock_HasUnpackSize(p) (((p)->flags & XZ_BF_UNPACK_SIZE) != 0)
56
SRes XzBlock_Parse(CXzBlock *p, const Byte *header);
57
SRes XzBlock_ReadHeader(CXzBlock *p, ISeqInStream *inStream, Bool *isIndex, UInt32 *headerSizeRes);
59
/* ---------- xz stream ---------- */
62
#define XZ_FOOTER_SIG_SIZE 2
64
extern Byte XZ_SIG[XZ_SIG_SIZE];
65
extern Byte XZ_FOOTER_SIG[XZ_FOOTER_SIG_SIZE];
67
#define XZ_STREAM_FLAGS_SIZE 2
68
#define XZ_STREAM_CRC_SIZE 4
70
#define XZ_STREAM_HEADER_SIZE (XZ_SIG_SIZE + XZ_STREAM_FLAGS_SIZE + XZ_STREAM_CRC_SIZE)
71
#define XZ_STREAM_FOOTER_SIZE (XZ_FOOTER_SIG_SIZE + XZ_STREAM_FLAGS_SIZE + XZ_STREAM_CRC_SIZE + 4)
73
#define XZ_CHECK_MASK 0xF
75
#define XZ_CHECK_CRC32 1
76
#define XZ_CHECK_CRC64 4
77
#define XZ_CHECK_SHA256 10
87
void XzCheck_Init(CXzCheck *p, int mode);
88
void XzCheck_Update(CXzCheck *p, const void *data, size_t size);
89
int XzCheck_Final(CXzCheck *p, Byte *digest);
91
typedef UInt16 CXzStreamFlags;
93
#define XzFlags_IsSupported(f) ((f) <= XZ_CHECK_MASK)
94
#define XzFlags_GetCheckType(f) ((f) & XZ_CHECK_MASK)
95
#define XzFlags_HasDataCrc32(f) (Xz_GetCheckType(f) == XZ_CHECK_CRC32)
96
unsigned XzFlags_GetCheckSize(CXzStreamFlags f);
98
SRes Xz_ParseHeader(CXzStreamFlags *p, const Byte *buf);
99
SRes Xz_ReadHeader(CXzStreamFlags *p, ISeqInStream *inStream);
109
CXzStreamFlags flags;
111
size_t numBlocksAllocated;
112
CXzBlockSizes *blocks;
116
void Xz_Construct(CXzStream *p);
117
void Xz_Free(CXzStream *p, ISzAlloc *alloc);
119
#define XZ_SIZE_OVERFLOW ((UInt64)(Int64)-1)
121
UInt64 Xz_GetUnpackSize(const CXzStream *p);
122
UInt64 Xz_GetPackSize(const CXzStream *p);
131
void Xzs_Construct(CXzs *p);
132
void Xzs_Free(CXzs *p, ISzAlloc *alloc);
133
SRes Xzs_ReadBackward(CXzs *p, ILookInStream *inStream, Int64 *startOffset, ICompressProgress *progress, ISzAlloc *alloc);
135
UInt64 Xzs_GetNumBlocks(const CXzs *p);
136
UInt64 Xzs_GetUnpackSize(const CXzs *p);
140
CODER_STATUS_NOT_SPECIFIED, /* use main error code instead */
141
CODER_STATUS_FINISHED_WITH_MARK, /* stream was finished with end mark. */
142
CODER_STATUS_NOT_FINISHED, /* stream was not finished */
143
CODER_STATUS_NEEDS_MORE_INPUT /* you must provide more input bytes */
148
CODER_FINISH_ANY, /* finish at any point */
149
CODER_FINISH_END /* block must be finished at the end */
152
typedef struct _IStateCoder
155
void (*Free)(void *p, ISzAlloc *alloc);
156
SRes (*SetProps)(void *p, const Byte *props, size_t propSize, ISzAlloc *alloc);
157
void (*Init)(void *p);
158
SRes (*Code)(void *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
159
int srcWasFinished, ECoderFinishMode finishMode, int *wasFinished);
162
#define MIXCODER_NUM_FILTERS_MAX 4
169
int finished[MIXCODER_NUM_FILTERS_MAX - 1];
170
size_t pos[MIXCODER_NUM_FILTERS_MAX - 1];
171
size_t size[MIXCODER_NUM_FILTERS_MAX - 1];
172
UInt64 ids[MIXCODER_NUM_FILTERS_MAX];
173
IStateCoder coders[MIXCODER_NUM_FILTERS_MAX];
176
void MixCoder_Construct(CMixCoder *p, ISzAlloc *alloc);
177
void MixCoder_Free(CMixCoder *p);
178
void MixCoder_Init(CMixCoder *p);
179
SRes MixCoder_SetFromMethod(CMixCoder *p, int coderIndex, UInt64 methodId);
180
SRes MixCoder_Code(CMixCoder *p, Byte *dest, SizeT *destLen,
181
const Byte *src, SizeT *srcLen, int srcWasFinished,
182
ECoderFinishMode finishMode, ECoderStatus *status);
186
XZ_STATE_STREAM_HEADER,
187
XZ_STATE_STREAM_INDEX,
188
XZ_STATE_STREAM_INDEX_CRC,
189
XZ_STATE_STREAM_FOOTER,
190
XZ_STATE_STREAM_PADDING,
191
XZ_STATE_BLOCK_HEADER,
193
XZ_STATE_BLOCK_FOOTER
201
unsigned indexPreSize;
203
CXzStreamFlags streamFlags;
205
UInt32 blockHeaderSize;
221
Byte shaDigest[SHA256_DIGEST_SIZE];
222
Byte buf[XZ_BLOCK_HEADER_SIZE_MAX];
225
SRes XzUnpacker_Create(CXzUnpacker *p, ISzAlloc *alloc);
226
void XzUnpacker_Free(CXzUnpacker *p);
230
It has meaning only if the decoding reaches output limit (*destLen).
231
LZMA_FINISH_ANY - use smallest number of input bytes
232
LZMA_FINISH_END - read EndOfStream marker after decoding
237
LZMA_STATUS_FINISHED_WITH_MARK
238
LZMA_STATUS_NOT_FINISHED
239
SZ_ERROR_DATA - Data error
240
SZ_ERROR_MEM - Memory allocation error
241
SZ_ERROR_UNSUPPORTED - Unsupported properties
242
SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
246
SRes XzUnpacker_Code(CXzUnpacker *p, Byte *dest, SizeT *destLen,
247
const Byte *src, SizeT *srcLen, /* int srcWasFinished, */ int finishMode,
248
ECoderStatus *status);
250
Bool XzUnpacker_IsStreamWasFinished(CXzUnpacker *p);