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21�0�b�&�QX�f���q�00����$>�h�N�'�a3��A���/�r ��L5�8�GԲ'�����w;��c#�q1���h$*��V^�k��QĽ�b:i������� ����H F#�_���,��]g����Ը����`RUU���� ��"�qD���>-��ϤI�~��3�̴�����NZ[[555�eeek7�m����YF#[��Đ��R��i��L�H�r ��@��J-�Pŝ��_|�-��6y��ks�V�U~��6���w.����(��0A� 4��f��� /���C�xŊ�ٳ����z=6�����rg���mKo��o�/����a�g���?'9%9��P��斓��~���L{�� �H��{AW��B��$����v�1b�&Mb�ر��ر#�0`�`xMBp! )Z�Nmo�mZ�g�}�eذaWTVV ���'99��C5��&�&+5�bT>|8��PUUETT����&���t��~TE%��'������b�tEGG;RSS�S�N�v��ѯ��t����u1@�ޚ"f��͈���r'L�Ph��m��ƌ�74o��`�x�q�P���NRSS�X,�����l&&&��MFFA!-��`��ҷ�n��Yuu�����x<I�LB%����KԒ50�!�3�bz�����ʸKL���;---�l6[��`��������Ȏ;�����egg4��!D�T��jWujyZ��������K����%����p�^���X,6��sV=�ܖ����6�3�X ���4ҿ��A2�&����_k�;d�� �VfOIEND�B`�/* * 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. */ /* *************************************************************** * NOTES/WARNINGS ******************************************************************/ /* The streaming API defined here is deprecated. * Consider migrating towards ZSTD_compressStream() API in `zstd.h` * See 'lib/README.md'. *****************************************************************/ #if defined (__cplusplus) extern "C" { #endif #ifndef ZSTD_BUFFERED_H_23987 #define ZSTD_BUFFERED_H_23987 /* ************************************* * Dependencies ***************************************/ #include /* size_t */ #include "zstd.h" /* ZSTD_CStream, ZSTD_DStream, ZSTDLIB_API */ /* *************************************************************** * Compiler specifics *****************************************************************/ /* Deprecation warnings */ /* Should these warnings be a problem, * it is generally possible to disable them, * typically with -Wno-deprecated-declarations for gcc * or _CRT_SECURE_NO_WARNINGS in Visual. * Otherwise, it's also possible to define ZBUFF_DISABLE_DEPRECATE_WARNINGS */ #ifdef ZBUFF_DISABLE_DEPRECATE_WARNINGS # define ZBUFF_DEPRECATED(message) ZSTDLIB_API /* disable deprecation warnings */ #else # if defined (__cplusplus) && (__cplusplus >= 201402) /* C++14 or greater */ # define ZBUFF_DEPRECATED(message) [[deprecated(message)]] ZSTDLIB_API # elif (defined(GNUC) && (GNUC > 4 || (GNUC == 4 && GNUC_MINOR >= 5))) || defined(__clang__) # define ZBUFF_DEPRECATED(message) ZSTDLIB_API __attribute__((deprecated(message))) # elif defined(__GNUC__) && (__GNUC__ >= 3) # define ZBUFF_DEPRECATED(message) ZSTDLIB_API __attribute__((deprecated)) # elif defined(_MSC_VER) # define ZBUFF_DEPRECATED(message) ZSTDLIB_API __declspec(deprecated(message)) # else # pragma message("WARNING: You need to implement ZBUFF_DEPRECATED for this compiler") # define ZBUFF_DEPRECATED(message) ZSTDLIB_API # endif #endif /* ZBUFF_DISABLE_DEPRECATE_WARNINGS */ /* ************************************* * Streaming functions ***************************************/ /* This is the easier "buffered" streaming API, * using an internal buffer to lift all restrictions on user-provided buffers * which can be any size, any place, for both input and output. * ZBUFF and ZSTD are 100% interoperable, * frames created by one can be decoded by the other one */ typedef ZSTD_CStream ZBUFF_CCtx; ZBUFF_DEPRECATED("use ZSTD_createCStream") ZBUFF_CCtx* ZBUFF_createCCtx(void); ZBUFF_DEPRECATED("use ZSTD_freeCStream") size_t ZBUFF_freeCCtx(ZBUFF_CCtx* cctx); ZBUFF_DEPRECATED("use ZSTD_initCStream") size_t ZBUFF_compressInit(ZBUFF_CCtx* cctx, int compressionLevel); ZBUFF_DEPRECATED("use ZSTD_initCStream_usingDict") size_t ZBUFF_compressInitDictionary(ZBUFF_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel); ZBUFF_DEPRECATED("use ZSTD_compressStream") size_t ZBUFF_compressContinue(ZBUFF_CCtx* cctx, void* dst, size_t* dstCapacityPtr, const void* src, size_t* srcSizePtr); ZBUFF_DEPRECATED("use ZSTD_flushStream") size_t ZBUFF_compressFlush(ZBUFF_CCtx* cctx, void* dst, size_t* dstCapacityPtr); ZBUFF_DEPRECATED("use ZSTD_endStream") size_t ZBUFF_compressEnd(ZBUFF_CCtx* cctx, void* dst, size_t* dstCapacityPtr); /*-************************************************* * Streaming compression - howto * * A ZBUFF_CCtx object is required to track streaming operation. * Use ZBUFF_createCCtx() and ZBUFF_freeCCtx() to create/release resources. * ZBUFF_CCtx objects can be reused multiple times. * * Start by initializing ZBUF_CCtx. * Use ZBUFF_compressInit() to start a new compression operation. * Use ZBUFF_compressInitDictionary() for a compression which requires a dictionary. * * Use ZBUFF_compressContinue() repetitively to consume input stream. * *srcSizePtr and *dstCapacityPtr can be any size. * The function will report how many bytes were read or written within *srcSizePtr and *dstCapacityPtr. * Note that it may not consume the entire input, in which case it's up to the caller to present again remaining data. * The content of `dst` will be overwritten (up to *dstCapacityPtr) at each call, so save its content if it matters or change @dst . * @return : a hint to preferred nb of bytes to use as input for next function call (it's just a hint, to improve latency) * or an error code, which can be tested using ZBUFF_isError(). * * At any moment, it's possible to flush whatever data remains within buffer, using ZBUFF_compressFlush(). * The nb of bytes written into `dst` will be reported into *dstCapacityPtr. * Note that the function cannot output more than *dstCapacityPtr, * therefore, some content might still be left into internal buffer if *dstCapacityPtr is too small. * @return : nb of bytes still present into internal buffer (0 if it's empty) * or an error code, which can be tested using ZBUFF_isError(). * * ZBUFF_compressEnd() instructs to finish a frame. * It will perform a flush and write frame epilogue. * The epilogue is required for decoders to consider a frame completed. * Similar to ZBUFF_compressFlush(), it may not be able to output the entire internal buffer content if *dstCapacityPtr is too small. * In which case, call again ZBUFF_compressFlush() to complete the flush. * @return : nb of bytes still present into internal buffer (0 if it's empty) * or an error code, which can be tested using ZBUFF_isError(). * * Hint : _recommended buffer_ sizes (not compulsory) : ZBUFF_recommendedCInSize() / ZBUFF_recommendedCOutSize() * input : ZBUFF_recommendedCInSize==128 KB block size is the internal unit, use this value to reduce intermediate stages (better latency) * output : ZBUFF_recommendedCOutSize==ZSTD_compressBound(128 KB) + 3 + 3 : ensures it's always possible to write/flush/end a full block. Skip some buffering. * By using both, it ensures that input will be entirely consumed, and output will always contain the result, reducing intermediate buffering. * **************************************************/ typedef ZSTD_DStream ZBUFF_DCtx; ZBUFF_DEPRECATED("use ZSTD_createDStream") ZBUFF_DCtx* ZBUFF_createDCtx(void); ZBUFF_DEPRECATED("use ZSTD_freeDStream") size_t ZBUFF_freeDCtx(ZBUFF_DCtx* dctx); ZBUFF_DEPRECATED("use ZSTD_initDStream") size_t ZBUFF_decompressInit(ZBUFF_DCtx* dctx); ZBUFF_DEPRECATED("use ZSTD_initDStream_usingDict") size_t ZBUFF_decompressInitDictionary(ZBUFF_DCtx* dctx, const void* dict, size_t dictSize); ZBUFF_DEPRECATED("use ZSTD_decompressStream") size_t ZBUFF_decompressContinue(ZBUFF_DCtx* dctx, void* dst, size_t* dstCapacityPtr, const void* src, size_t* srcSizePtr); /*-*************************************************************************** * Streaming decompression howto * * A ZBUFF_DCtx object is required to track streaming operations. * Use ZBUFF_createDCtx() and ZBUFF_freeDCtx() to create/release resources. * Use ZBUFF_decompressInit() to start a new decompression operation, * or ZBUFF_decompressInitDictionary() if decompression requires a dictionary. * Note that ZBUFF_DCtx objects can be re-init multiple times. * * Use ZBUFF_decompressContinue() repetitively to consume your input. * *srcSizePtr and *dstCapacityPtr can be any size. * The function will report how many bytes were read or written by modifying *srcSizePtr and *dstCapacityPtr. * Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again. * The content of `dst` will be overwritten (up to *dstCapacityPtr) at each function call, so save its content if it matters, or change `dst`. * @return : 0 when a frame is completely decoded and fully flushed, * 1 when there is still some data left within internal buffer to flush, * >1 when more data is expected, with value being a suggested next input size (it's just a hint, which helps latency), * or an error code, which can be tested using ZBUFF_isError(). * * Hint : recommended buffer sizes (not compulsory) : ZBUFF_recommendedDInSize() and ZBUFF_recommendedDOutSize() * output : ZBUFF_recommendedDOutSize== 128 KB block size is the internal unit, it ensures it's always possible to write a full block when decoded. * input : ZBUFF_recommendedDInSize == 128KB + 3; * just follow indications from ZBUFF_decompressContinue() to minimize latency. It should always be <= 128 KB + 3 . * *******************************************************************************/ /* ************************************* * Tool functions ***************************************/ ZBUFF_DEPRECATED("use ZSTD_isError") unsigned ZBUFF_isError(size_t errorCode); ZBUFF_DEPRECATED("use ZSTD_getErrorName") const char* ZBUFF_getErrorName(size_t errorCode); /** Functions below provide recommended buffer sizes for Compression or Decompression operations. * These sizes are just hints, they tend to offer better latency */ ZBUFF_DEPRECATED("use ZSTD_CStreamInSize") size_t ZBUFF_recommendedCInSize(void); ZBUFF_DEPRECATED("use ZSTD_CStreamOutSize") size_t ZBUFF_recommendedCOutSize(void); ZBUFF_DEPRECATED("use ZSTD_DStreamInSize") size_t ZBUFF_recommendedDInSize(void); ZBUFF_DEPRECATED("use ZSTD_DStreamOutSize") size_t ZBUFF_recommendedDOutSize(void); #endif /* ZSTD_BUFFERED_H_23987 */ #ifdef ZBUFF_STATIC_LINKING_ONLY #ifndef ZBUFF_STATIC_H_30298098432 #define ZBUFF_STATIC_H_30298098432 /* ==================================================================================== * The definitions in this section are considered experimental. * They should never be used in association with a dynamic library, as they may change in the future. * They are provided for advanced usages. * Use them only in association with static linking. * ==================================================================================== */ /*--- Dependency ---*/ #define ZSTD_STATIC_LINKING_ONLY /* ZSTD_parameters, ZSTD_customMem */ #include "zstd.h" /*--- Custom memory allocator ---*/ /*! ZBUFF_createCCtx_advanced() : * Create a ZBUFF compression context using external alloc and free functions */ ZBUFF_DEPRECATED("use ZSTD_createCStream_advanced") ZBUFF_CCtx* ZBUFF_createCCtx_advanced(ZSTD_customMem customMem); /*! ZBUFF_createDCtx_advanced() : * Create a ZBUFF decompression context using external alloc and free functions */ ZBUFF_DEPRECATED("use ZSTD_createDStream_advanced") ZBUFF_DCtx* ZBUFF_createDCtx_advanced(ZSTD_customMem customMem); /*--- Advanced Streaming Initialization ---*/ ZBUFF_DEPRECATED("use ZSTD_initDStream_usingDict") size_t ZBUFF_compressInit_advanced(ZBUFF_CCtx* zbc, const void* dict, size_t dictSize, ZSTD_parameters params, unsigned long long pledgedSrcSize); #endif /* ZBUFF_STATIC_H_30298098432 */ #endif /* ZBUFF_STATIC_LINKING_ONLY */ #if defined (__cplusplus) } #endif