text: //bytes_rle.h
  //快速解压的一个通用字节流压缩rle算法.
  //
  /*
   The MIT License (MIT)
   Copyright (c) 2012-2017 HouSisong
   
   Permission is hereby granted, free of charge, to any person
   obtaining a copy of this software and associated documentation
   files (the "Software"), to deal in the Software without
   restriction, including without limitation the rights to use,
   copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the
   Software is furnished to do so, subject to the following
   conditions:
   
   The above copyright notice and this permission notice shall be
   included in all copies of the Software.
   
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   OTHER DEALINGS IN THE SOFTWARE.
  */
  
  #ifndef __BYTES_RLE_H_
  #define __BYTES_RLE_H_
  #include <string.h>
  #include <vector>
  namespace hdiff_private{
  
  enum TRleParameter{ kRle_bestSize=1, kRle_default=3, kRle_bestUnRleSpeed=32 };
  
  void bytesRLE_save(std::vector<unsigned char>& out_code,
                     const unsigned char* src,const unsigned char* src_end,
                     int rle_parameter=kRle_default);
  
  
  void bytesRLE_save(std::vector<unsigned char>& out_ctrlBuf,std::vector<unsigned char>& out_codeBuf,
                     const unsigned char* src,const unsigned char* src_end,int rle_parameter);
  
  #ifndef kMaxBytesRle0Len
      static const size_t kMaxBytesRle0Len =(size_t)(((size_t)1<<31)-1);
  #endif
      
      struct TSangileStreamRLE0{
          std::vector<unsigned char>  fixed_code;
          std::vector<unsigned char>  uncompressData;
          size_t                      len0;
          inline TSangileStreamRLE0():len0(0){}
          inline size_t curCodeSize() const { return maxCodeSize(0,0); }
          size_t maxCodeSize(const unsigned char* appendData,const unsigned char* appendData_end) const;
          void append(const unsigned char* appendData,const unsigned char* appendData_end);
          void finishAppend();
          inline void clear() { fixed_code.clear(); uncompressData.clear(); len0=0; }
      };
      
  }//namespace hdiff_private
  #endif //__BYTES_RLE_H_
  