zbuff_decompress.c
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/*
* Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
* You may select, at your option, one of the above-listed licenses.
*/
/* *************************************
* Dependencies
***************************************/
#define ZBUFF_STATIC_LINKING_ONLY
#include "zbuff.h"
ZBUFF_DCtx* ZBUFF_createDCtx(void)
{
return ZSTD_createDStream();
}
ZBUFF_DCtx* ZBUFF_createDCtx_advanced(ZSTD_customMem customMem)
{
return ZSTD_createDStream_advanced(customMem);
}
size_t ZBUFF_freeDCtx(ZBUFF_DCtx* zbd)
{
return ZSTD_freeDStream(zbd);
}
/* *** Initialization *** */
size_t ZBUFF_decompressInitDictionary(ZBUFF_DCtx* zbd, const void* dict, size_t dictSize)
{
return ZSTD_initDStream_usingDict(zbd, dict, dictSize);
}
size_t ZBUFF_decompressInit(ZBUFF_DCtx* zbd)
{
return ZSTD_initDStream(zbd);
}
/* *** Decompression *** */
size_t ZBUFF_decompressContinue(ZBUFF_DCtx* zbd,
void* dst, size_t* dstCapacityPtr,
const void* src, size_t* srcSizePtr)
{
ZSTD_outBuffer outBuff;
ZSTD_inBuffer inBuff;
size_t result;
outBuff.dst = dst;
outBuff.pos = 0;
outBuff.size = *dstCapacityPtr;
inBuff.src = src;
inBuff.pos = 0;
inBuff.size = *srcSizePtr;
result = ZSTD_decompressStream(zbd, &outBuff, &inBuff);
*dstCapacityPtr = outBuff.pos;
*srcSizePtr = inBuff.pos;
return result;
}
/* *************************************
* Tool functions
***************************************/
size_t ZBUFF_recommendedDInSize(void) { return ZSTD_DStreamInSize(); }
size_t ZBUFF_recommendedDOutSize(void) { return ZSTD_DStreamOutSize(); }