Upgrading lzma_sdk to version 9.20.

third_party/lzma_sdk/Archive/7z/7zIn.h

-/* 7zIn.h */
-
-#ifndef __7Z_IN_H
-#define __7Z_IN_H
-
-#include "7zHeader.h"
-#include "7zItem.h"
-#include "7zAlloc.h"
- 
-typedef struct _CInArchiveInfo
-{
-  CFileSize StartPositionAfterHeader; 
-  CFileSize DataStartPosition;
-}CInArchiveInfo;
-
-typedef struct _CArchiveDatabaseEx
-{
-  CArchiveDatabase Database;
-  CInArchiveInfo ArchiveInfo;
-  UInt32 *FolderStartPackStreamIndex;
-  CFileSize *PackStreamStartPositions;
-  UInt32 *FolderStartFileIndex;
-  UInt32 *FileIndexToFolderIndexMap;
-}CArchiveDatabaseEx;
-
-void SzArDbExInit(CArchiveDatabaseEx *db);
-void SzArDbExFree(CArchiveDatabaseEx *db, void (*freeFunc)(void *));
-CFileSize SzArDbGetFolderStreamPos(CArchiveDatabaseEx *db, UInt32 folderIndex, UInt32 indexInFolder);
-int SzArDbGetFolderFullPackSize(CArchiveDatabaseEx *db, UInt32 folderIndex, CFileSize *resSize);
-
-typedef struct _ISzInStream
-{
-  #ifdef _LZMA_IN_CB
-  SZ_RESULT (*Read)(
-      void *object,           /* pointer to ISzInStream itself */
-      void **buffer,          /* out: pointer to buffer with data */
-      size_t maxRequiredSize, /* max required size to read */
-      size_t *processedSize); /* real processed size. 
-                                 processedSize can be less than maxRequiredSize.
-                                 If processedSize == 0, then there are no more 
-                                 bytes in stream. */
-  #else
-  SZ_RESULT (*Read)(void *object, void *buffer, size_t size, size_t *processedSize);
-  #endif
-  SZ_RESULT (*Seek)(void *object, CFileSize pos);
-} ISzInStream;
-
- 
-int SzArchiveOpen(
-    ISzInStream *inStream, 
-    CArchiveDatabaseEx *db,
-    ISzAlloc *allocMain, 
-    ISzAlloc *allocTemp);
- 
-#endif