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https://github.com/dborth/snes9xgx.git
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61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
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/* 7zExtract.h */
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#if defined(_LZMA_OUT_READ) && !defined(_LZMA_IN_CB)
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#error "Fixme: _LZMA_OUT_READ && _LZMA_IN_CB isn't currently possible!"
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#endif
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#ifndef __7Z_EXTRACT_H
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#define __7Z_EXTRACT_H
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#include "7zIn.h"
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/*
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SzExtract extracts file from archive
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SzExtract2 does the same but needs less memory
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*outBuffer must be 0 before first call for each new archive.
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Extracting cache:
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If you need to decompress more than one file, you can send
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these values from previous call:
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*blockIndex,
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*outBuffer,
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*outBufferSize
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You can consider "*outBuffer" as cache of solid block. If your archive is solid,
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it will increase decompression speed.
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If you use external function, you can declare these 3 cache variables
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(blockIndex, outBuffer, outBufferSize) as static in that external function.
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Free *outBuffer and set *outBuffer to 0, if you want to flush cache.
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*/
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SZ_RESULT SzExtract(
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ISzInStream *inStream,
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CArchiveDatabaseEx *db,
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UInt32 fileIndex, /* index of file */
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UInt32 *blockIndex, /* index of solid block */
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Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
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size_t *outBufferSize, /* buffer size for output buffer */
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size_t *offset, /* offset of stream for required file in *outBuffer */
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size_t *outSizeProcessed, /* size of file in *outBuffer */
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ISzAlloc *allocMain,
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ISzAlloc *allocTemp);
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#ifdef _LZMA_OUT_READ
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SZ_RESULT SzExtract2(
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ISzInStream *inStream,
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CArchiveDatabaseEx *db,
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UInt32 fileIndex, /* index of file */
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UInt32 *blockIndex, /* index of solid block */
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Byte **outBuffer, /* pointer to pointer to output buffer (allocated with allocMain) */
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size_t *outBufferSize, /* buffer size for output buffer */
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size_t *offset, /* offset of stream for required file in *outBuffer */
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size_t *outSizeProcessed, /* size of file in *outBuffer */
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ISzAlloc *allocMain,
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ISzAlloc *allocTemp);
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#endif
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#endif
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