82 lines
4.1 KiB
C
82 lines
4.1 KiB
C
// dict_compress_plugin.h
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// sync_make
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// Created by housisong on 2020-03-08.
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/*
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The MIT License (MIT)
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Copyright (c) 2020-2023 HouSisong
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef dict_compress_plugin_h
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#define dict_compress_plugin_h
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#include "../../libHDiffPatch/HPatch/patch_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef void* hsync_dictCompressHandle;
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//dict compress plugin
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typedef struct hsync_TDictCompress{
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//return type tag; strlen(result)<=hpatch_kMaxPluginTypeLength; (Note:result lifetime)
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const char* (*compressType)(void);//ascii cstring,cannot contain '&'
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//return the max compressed size, if input dataSize data;
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hpatch_StreamPos_t (*maxCompressedSize)(hpatch_StreamPos_t in_dataSize);
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size_t (*limitDictSizeByData)(struct hsync_TDictCompress* compressPlugin,size_t blockCount,size_t blockSize);
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size_t (*getBestWorkBlockCount)(struct hsync_TDictCompress* compressPlugin,size_t blockCount,
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size_t blockSize,size_t defaultWorkBlockCount);
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size_t (*getDictSize)(struct hsync_TDictCompress* compressPlugin);
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hsync_dictCompressHandle (*dictCompressOpen)(struct hsync_TDictCompress* compressPlugin,size_t blockCount,size_t blockSize);
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void (*dictCompressClose)(struct hsync_TDictCompress* compressPlugin,
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hsync_dictCompressHandle dictHandle);
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//if not need send info to decompressor, dictCompressInfo can NULL
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size_t (*dictCompressInfo)(const struct hsync_TDictCompress* compressPlugin,hsync_dictCompressHandle dictHandle,
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hpatch_byte* out_info,hpatch_byte* out_infoEnd);
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hpatch_byte* (*getResetDictBuffer)(hsync_dictCompressHandle dictHandle,size_t blockIndex,
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size_t* out_dictSize);
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size_t (*dictCompress)(hsync_dictCompressHandle dictHandle,size_t blockIndex,
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hpatch_byte* out_code,hpatch_byte* out_codeEnd,
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const hpatch_byte* in_dataBegin,const hpatch_byte* in_dataEnd);
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} hsync_TDictCompress;
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#define kDictCompressCancel (~(size_t)0)
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#define kDictCompressError ((size_t)0)
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static hpatch_byte* _CacheBlockDict_getResetDictBuffer(_CacheBlockDict_t* self,size_t blockIndex,
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size_t* out_dictSize){
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size_t dictSize=self->dictSize;
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hpatch_StreamPos_t prefixSize=((hpatch_StreamPos_t)blockIndex)*self->blockSize;
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assert(self->uncompress);
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assert(prefixSize>=0);
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if (dictSize>prefixSize) dictSize=(size_t)prefixSize;
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self->block_cache_i=blockIndex;
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*out_dictSize=dictSize;
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self->uncompressCur=self->uncompress+dictSize;
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return self->uncompress;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif // dict_compress_plugin_h
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