FreeBSD/Linux Kernel Cross Reference
sys/contrib/zstd/lib/deprecated/zbuff_decompress.c

     /*
      * Copyright (c) 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(); }

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