157 lines
6.2 KiB
C
157 lines
6.2 KiB
C
/*
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LZ4 auto-framing library
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Header File for static linking only
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Copyright (C) 2011-2016, 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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- LZ4 source repository : https://github.com/lz4/lz4
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- LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
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*/
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#ifndef LZ4FRAME_STATIC_H_0398209384
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#define LZ4FRAME_STATIC_H_0398209384
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#if defined (__cplusplus)
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extern "C" {
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#endif
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/* lz4frame_static.h should be used solely in the context of static linking.
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* It contains definitions which are not stable and may change in the future.
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* Never use it in the context of DLL linking.
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*
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* Defining LZ4F_PUBLISH_STATIC_FUNCTIONS allows one to override this. Use at
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* your own risk.
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*/
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#ifdef LZ4F_PUBLISH_STATIC_FUNCTIONS
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#define LZ4FLIB_STATIC_API LZ4FLIB_API
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#else
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#define LZ4FLIB_STATIC_API
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#endif
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/* --- Dependency --- */
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#include "lz4frame.h"
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/* --- Error List --- */
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#define LZ4F_LIST_ERRORS(ITEM) \
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ITEM(OK_NoError) \
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ITEM(ERROR_GENERIC) \
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ITEM(ERROR_maxBlockSize_invalid) \
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ITEM(ERROR_blockMode_invalid) \
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ITEM(ERROR_contentChecksumFlag_invalid) \
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ITEM(ERROR_compressionLevel_invalid) \
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ITEM(ERROR_headerVersion_wrong) \
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ITEM(ERROR_blockChecksum_invalid) \
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ITEM(ERROR_reservedFlag_set) \
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ITEM(ERROR_allocation_failed) \
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ITEM(ERROR_srcSize_tooLarge) \
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ITEM(ERROR_dstMaxSize_tooSmall) \
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ITEM(ERROR_frameHeader_incomplete) \
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ITEM(ERROR_frameType_unknown) \
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ITEM(ERROR_frameSize_wrong) \
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ITEM(ERROR_srcPtr_wrong) \
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ITEM(ERROR_decompressionFailed) \
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ITEM(ERROR_headerChecksum_invalid) \
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ITEM(ERROR_contentChecksum_invalid) \
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ITEM(ERROR_frameDecoding_alreadyStarted) \
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ITEM(ERROR_maxCode)
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#define LZ4F_GENERATE_ENUM(ENUM) LZ4F_##ENUM,
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/* enum list is exposed, to handle specific errors */
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typedef enum { LZ4F_LIST_ERRORS(LZ4F_GENERATE_ENUM) } LZ4F_errorCodes;
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LZ4FLIB_STATIC_API LZ4F_errorCodes LZ4F_getErrorCode(size_t functionResult);
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/**********************************
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* Bulk processing dictionary API
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*********************************/
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typedef struct LZ4F_CDict_s LZ4F_CDict;
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/*! LZ4_createCDict() :
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* When compressing multiple messages / blocks with the same dictionary, it's recommended to load it just once.
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* LZ4_createCDict() will create a digested dictionary, ready to start future compression operations without startup delay.
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* LZ4_CDict can be created once and shared by multiple threads concurrently, since its usage is read-only.
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* `dictBuffer` can be released after LZ4_CDict creation, since its content is copied within CDict */
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LZ4FLIB_STATIC_API LZ4F_CDict* LZ4F_createCDict(const void* dictBuffer, size_t dictSize);
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LZ4FLIB_STATIC_API void LZ4F_freeCDict(LZ4F_CDict* CDict);
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/*! LZ4_compressFrame_usingCDict() :
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* Compress an entire srcBuffer into a valid LZ4 frame using a digested Dictionary.
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* cctx must point to a context created by LZ4F_createCompressionContext().
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* If cdict==NULL, compress without a dictionary.
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* dstBuffer MUST be >= LZ4F_compressFrameBound(srcSize, preferencesPtr).
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* If this condition is not respected, function will fail (@return an errorCode).
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* The LZ4F_preferences_t structure is optional : you may provide NULL as argument,
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* but it's not recommended, as it's the only way to provide dictID in the frame header.
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* @return : number of bytes written into dstBuffer.
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* or an error code if it fails (can be tested using LZ4F_isError()) */
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LZ4FLIB_STATIC_API size_t LZ4F_compressFrame_usingCDict(
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LZ4F_cctx* cctx,
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void* dst, size_t dstCapacity,
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const void* src, size_t srcSize,
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const LZ4F_CDict* cdict,
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const LZ4F_preferences_t* preferencesPtr);
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/*! LZ4F_compressBegin_usingCDict() :
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* Inits streaming dictionary compression, and writes the frame header into dstBuffer.
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* dstCapacity must be >= LZ4F_HEADER_SIZE_MAX bytes.
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* `prefsPtr` is optional : you may provide NULL as argument,
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* however, it's the only way to provide dictID in the frame header.
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* @return : number of bytes written into dstBuffer for the header,
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* or an error code (which can be tested using LZ4F_isError()) */
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LZ4FLIB_STATIC_API size_t LZ4F_compressBegin_usingCDict(
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LZ4F_cctx* cctx,
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void* dstBuffer, size_t dstCapacity,
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const LZ4F_CDict* cdict,
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const LZ4F_preferences_t* prefsPtr);
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/*! LZ4F_decompress_usingDict() :
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* Same as LZ4F_decompress(), using a predefined dictionary.
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* Dictionary is used "in place", without any preprocessing.
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* It must remain accessible throughout the entire frame decoding. */
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LZ4FLIB_STATIC_API size_t LZ4F_decompress_usingDict(
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LZ4F_dctx* dctxPtr,
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void* dstBuffer, size_t* dstSizePtr,
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const void* srcBuffer, size_t* srcSizePtr,
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const void* dict, size_t dictSize,
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const LZ4F_decompressOptions_t* decompressOptionsPtr);
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#if defined (__cplusplus)
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}
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#endif
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#endif /* LZ4FRAME_STATIC_H_0398209384 */
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