Upgrading lzma_sdk to version 9.20.

third_party/lzma_sdk/C/Xz.h

+/* Xz.h - Xz interface
+2010-09-17 : Igor Pavlov : Public domain */
+
+#ifndef __XZ_H
+#define __XZ_H
+
+#include "Sha256.h"
+
+EXTERN_C_BEGIN
+
+#define XZ_ID_Subblock 1
+#define XZ_ID_Delta 3
+#define XZ_ID_X86 4
+#define XZ_ID_PPC 5
+#define XZ_ID_IA64 6
+#define XZ_ID_ARM 7
+#define XZ_ID_ARMT 8
+#define XZ_ID_SPARC 9
+#define XZ_ID_LZMA2 0x21
+
+unsigned Xz_ReadVarInt(const Byte *p, size_t maxSize, UInt64 *value);
+unsigned Xz_WriteVarInt(Byte *buf, UInt64 v);
+
+/* ---------- xz block ---------- */
+
+#define XZ_BLOCK_HEADER_SIZE_MAX 1024
+
+#define XZ_NUM_FILTERS_MAX 4
+#define XZ_BF_NUM_FILTERS_MASK 3
+#define XZ_BF_PACK_SIZE (1 << 6)
+#define XZ_BF_UNPACK_SIZE (1 << 7)
+
+#define XZ_FILTER_PROPS_SIZE_MAX 20
+
+typedef struct
+{
+  UInt64 id;
+  UInt32 propsSize;
+  Byte props[XZ_FILTER_PROPS_SIZE_MAX];
+} CXzFilter;
+
+typedef struct
+{
+  UInt64 packSize;
+  UInt64 unpackSize;
+  Byte flags;
+  CXzFilter filters[XZ_NUM_FILTERS_MAX];
+} CXzBlock;
+
+#define XzBlock_GetNumFilters(p) (((p)->flags & XZ_BF_NUM_FILTERS_MASK) + 1)
+#define XzBlock_HasPackSize(p)   (((p)->flags & XZ_BF_PACK_SIZE) != 0)
+#define XzBlock_HasUnpackSize(p) (((p)->flags & XZ_BF_UNPACK_SIZE) != 0)
+
+SRes XzBlock_Parse(CXzBlock *p, const Byte *header);
+SRes XzBlock_ReadHeader(CXzBlock *p, ISeqInStream *inStream, Bool *isIndex, UInt32 *headerSizeRes);
+
+/* ---------- xz stream ---------- */
+
+#define XZ_SIG_SIZE 6
+#define XZ_FOOTER_SIG_SIZE 2
+
+extern Byte XZ_SIG[XZ_SIG_SIZE];
+extern Byte XZ_FOOTER_SIG[XZ_FOOTER_SIG_SIZE];
+
+#define XZ_STREAM_FLAGS_SIZE 2
+#define XZ_STREAM_CRC_SIZE 4
+
+#define XZ_STREAM_HEADER_SIZE (XZ_SIG_SIZE + XZ_STREAM_FLAGS_SIZE + XZ_STREAM_CRC_SIZE)
+#define XZ_STREAM_FOOTER_SIZE (XZ_FOOTER_SIG_SIZE + XZ_STREAM_FLAGS_SIZE + XZ_STREAM_CRC_SIZE + 4)
+
+#define XZ_CHECK_MASK 0xF
+#define XZ_CHECK_NO 0
+#define XZ_CHECK_CRC32 1
+#define XZ_CHECK_CRC64 4
+#define XZ_CHECK_SHA256 10
+
+typedef struct
+{
+  int mode;
+  UInt32 crc;
+  UInt64 crc64;
+  CSha256 sha;
+} CXzCheck;
+
+void XzCheck_Init(CXzCheck *p, int mode);
+void XzCheck_Update(CXzCheck *p, const void *data, size_t size);
+int XzCheck_Final(CXzCheck *p, Byte *digest);
+
+typedef UInt16 CXzStreamFlags;
+
+#define XzFlags_IsSupported(f) ((f) <= XZ_CHECK_MASK)
+#define XzFlags_GetCheckType(f) ((f) & XZ_CHECK_MASK)
+#define XzFlags_HasDataCrc32(f) (Xz_GetCheckType(f) == XZ_CHECK_CRC32)
+unsigned XzFlags_GetCheckSize(CXzStreamFlags f);
+
+SRes Xz_ParseHeader(CXzStreamFlags *p, const Byte *buf);
+SRes Xz_ReadHeader(CXzStreamFlags *p, ISeqInStream *inStream);
+
+typedef struct
+{
+  UInt64 unpackSize;
+  UInt64 totalSize;
+} CXzBlockSizes;
+
+typedef struct
+{
+  CXzStreamFlags flags;
+  size_t numBlocks;
+  size_t numBlocksAllocated;
+  CXzBlockSizes *blocks;
+  UInt64 startOffset;
+} CXzStream;
+
+void Xz_Construct(CXzStream *p);
+void Xz_Free(CXzStream *p, ISzAlloc *alloc);
+
+#define XZ_SIZE_OVERFLOW ((UInt64)(Int64)-1)
+
+UInt64 Xz_GetUnpackSize(const CXzStream *p);
+UInt64 Xz_GetPackSize(const CXzStream *p);
+
+typedef struct
+{
+  size_t num;
+  size_t numAllocated;
+  CXzStream *streams;
+} CXzs;
+
+void Xzs_Construct(CXzs *p);
+void Xzs_Free(CXzs *p, ISzAlloc *alloc);
+SRes Xzs_ReadBackward(CXzs *p, ILookInStream *inStream, Int64 *startOffset, ICompressProgress *progress, ISzAlloc *alloc);
+
+UInt64 Xzs_GetNumBlocks(const CXzs *p);
+UInt64 Xzs_GetUnpackSize(const CXzs *p);
+
+typedef enum
+{
+  CODER_STATUS_NOT_SPECIFIED,               /* use main error code instead */
+  CODER_STATUS_FINISHED_WITH_MARK,          /* stream was finished with end mark. */
+  CODER_STATUS_NOT_FINISHED,                /* stream was not finished */
+  CODER_STATUS_NEEDS_MORE_INPUT             /* you must provide more input bytes */
+} ECoderStatus;
+
+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, ISzAlloc *alloc);
+  SRes (*SetProps)(void *p, const Byte *props, size_t propSize, ISzAlloc *alloc);
+  void (*Init)(void *p);
+  SRes (*Code)(void *p, Byte *dest, SizeT *destLen, const Byte *src, SizeT *srcLen,
+      int srcWasFinished, ECoderFinishMode finishMode, int *wasFinished);
+} IStateCoder;
+
+#define MIXCODER_NUM_FILTERS_MAX 4
+
+typedef struct
+{
+  ISzAlloc *alloc;
+  Byte *buf;
+  int numCoders;
+  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];
+  IStateCoder coders[MIXCODER_NUM_FILTERS_MAX];
+} CMixCoder;
+
+void MixCoder_Construct(CMixCoder *p, ISzAlloc *alloc);
+void MixCoder_Free(CMixCoder *p);
+void MixCoder_Init(CMixCoder *p);
+SRes MixCoder_SetFromMethod(CMixCoder *p, int 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
+{
+  XZ_STATE_STREAM_HEADER,
+  XZ_STATE_STREAM_INDEX,
+  XZ_STATE_STREAM_INDEX_CRC,
+  XZ_STATE_STREAM_FOOTER,
+  XZ_STATE_STREAM_PADDING,
+  XZ_STATE_BLOCK_HEADER,
+  XZ_STATE_BLOCK,
+  XZ_STATE_BLOCK_FOOTER
+} EXzState;
+
+typedef struct
+{
+  EXzState state;
+  UInt32 pos;
+  unsigned alignPos;
+  unsigned indexPreSize;
+
+  CXzStreamFlags streamFlags;
+  
+  UInt32 blockHeaderSize;
+  UInt64 packSize;
+  UInt64 unpackSize;
+
+  UInt64 numBlocks;
+  UInt64 indexSize;
+  UInt64 indexPos;
+  UInt64 padSize;
+
+  UInt64 numStreams;
+
+  UInt32 crc;
+  CMixCoder decoder;
+  CXzBlock block;
+  CXzCheck check;
+  CSha256 sha;
+  Byte shaDigest[SHA256_DIGEST_SIZE];
+  Byte buf[XZ_BLOCK_HEADER_SIZE_MAX];
+} CXzUnpacker;
+
+SRes XzUnpacker_Create(CXzUnpacker *p, ISzAlloc *alloc);
+void XzUnpacker_Free(CXzUnpacker *p);
+
+/*
+finishMode:
+  It has meaning only if the decoding reaches output limit (*destLen).
+  LZMA_FINISH_ANY - use smallest number of input bytes
+  LZMA_FINISH_END - read EndOfStream marker after decoding
+
+Returns:
+  SZ_OK
+    status:
+      LZMA_STATUS_FINISHED_WITH_MARK
+      LZMA_STATUS_NOT_FINISHED
+  SZ_ERROR_DATA - Data error
+  SZ_ERROR_MEM  - Memory allocation error
+  SZ_ERROR_UNSUPPORTED - Unsupported properties
+  SZ_ERROR_INPUT_EOF - It needs more bytes in input buffer (src).
+*/
+
+
+SRes XzUnpacker_Code(CXzUnpacker *p, Byte *dest, SizeT *destLen,
+    const Byte *src, SizeT *srcLen, /* int srcWasFinished, */ int finishMode,
+    ECoderStatus *status);
+
+Bool XzUnpacker_IsStreamWasFinished(CXzUnpacker *p);
+
+EXTERN_C_END
+
+#endif