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59 lines
1.3 KiB
59 lines
1.3 KiB
#ifndef _RAR_DATAHASH_
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#define _RAR_DATAHASH_
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enum HASH_TYPE {HASH_NONE,HASH_RAR14,HASH_CRC32,HASH_BLAKE2};
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struct HashValue
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{
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void Init(HASH_TYPE Type);
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// Use the const member, so types on both sides of "==" match.
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// Otherwise clang -std=c++20 issues "ambiguity is between a regular call
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// to this operator and a call with the argument order reversed" warning.
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bool operator == (const HashValue &cmp) const;
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// Not actually used now. Const member for same reason as operator == above.
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bool operator != (const HashValue &cmp) const {return !(*this==cmp);}
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HASH_TYPE Type;
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union
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{
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uint CRC32;
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byte Digest[SHA256_DIGEST_SIZE];
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};
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};
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#ifdef RAR_SMP
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class ThreadPool;
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class DataHash;
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#endif
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class DataHash
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{
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private:
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HASH_TYPE HashType;
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uint CurCRC32;
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blake2sp_state *blake2ctx;
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#ifdef RAR_SMP
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ThreadPool *ThPool;
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uint MaxThreads;
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// Upper limit for maximum threads to prevent wasting threads in pool.
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static const uint MaxHashThreads=8;
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#endif
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public:
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DataHash();
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~DataHash();
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void Init(HASH_TYPE Type,uint MaxThreads);
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void Update(const void *Data,size_t DataSize);
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void Result(HashValue *Result);
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uint GetCRC32();
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bool Cmp(HashValue *CmpValue,byte *Key);
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HASH_TYPE Type() {return HashType;}
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};
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#endif
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