107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
/*
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zstd_legacy - decoder for legacy format
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Header File
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Copyright (C) 2015-2016, Yann Collet.
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BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following disclaimer
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in the documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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You can contact the author at :
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- zstd source repository : https://github.com/Cyan4973/zstd
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- ztsd public forum : https://groups.google.com/forum/#!forum/lz4c
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*/
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#ifndef ZSTD_LEGACY_H
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#define ZSTD_LEGACY_H
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#if defined (__cplusplus)
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extern "C" {
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#endif
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/* *************************************
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* Includes
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***************************************/
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#include "mem.h" /* MEM_STATIC */
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#include "error_private.h" /* ERROR */
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#include "zstd_v01.h"
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#include "zstd_v02.h"
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#include "zstd_v03.h"
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#include "zstd_v04.h"
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#include "zstd_v05.h"
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/** ZSTD_isLegacy() :
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@return : > 0 if supported by legacy decoder. 0 otherwise.
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return value is the version.
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*/
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MEM_STATIC unsigned ZSTD_isLegacy (U32 magicNumberLE)
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{
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switch(magicNumberLE)
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{
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case ZSTDv01_magicNumberLE:return 1;
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case ZSTDv02_magicNumber : return 2;
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case ZSTDv03_magicNumber : return 3;
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case ZSTDv04_magicNumber : return 4;
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case ZSTDv05_MAGICNUMBER : return 5;
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default : return 0;
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}
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}
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MEM_STATIC size_t ZSTD_decompressLegacy(
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void* dst, size_t dstCapacity,
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const void* src, size_t compressedSize,
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const void* dict,size_t dictSize,
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U32 magicNumberLE)
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{
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switch(magicNumberLE)
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{
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case ZSTDv01_magicNumberLE :
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return ZSTDv01_decompress(dst, dstCapacity, src, compressedSize);
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case ZSTDv02_magicNumber :
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return ZSTDv02_decompress(dst, dstCapacity, src, compressedSize);
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case ZSTDv03_magicNumber :
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return ZSTDv03_decompress(dst, dstCapacity, src, compressedSize);
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case ZSTDv04_magicNumber :
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return ZSTDv04_decompress(dst, dstCapacity, src, compressedSize);
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case ZSTDv05_MAGICNUMBER :
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{
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size_t result;
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ZSTDv05_DCtx* zd = ZSTDv05_createDCtx();
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if (zd==NULL) return ERROR(memory_allocation);
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result = ZSTDv05_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize);
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ZSTDv05_freeDCtx(zd);
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return result;
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}
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default :
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return ERROR(prefix_unknown);
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}
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}
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#if defined (__cplusplus)
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}
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#endif
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#endif /* ZSTD_LEGACY_H */
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