mirror of
https://github.com/shadps4-emu/ext-cryptopp.git
synced 2024-11-23 18:09:48 +00:00
61 lines
2.3 KiB
C++
61 lines
2.3 KiB
C++
#ifndef CRYPTOPP_ZLIB_H
|
|
#define CRYPTOPP_ZLIB_H
|
|
|
|
#include "cryptlib.h"
|
|
#include "adler32.h"
|
|
#include "zdeflate.h"
|
|
#include "zinflate.h"
|
|
|
|
NAMESPACE_BEGIN(CryptoPP)
|
|
|
|
/// ZLIB Compressor (RFC 1950)
|
|
class ZlibCompressor : public Deflator
|
|
{
|
|
public:
|
|
ZlibCompressor(BufferedTransformation *attachment=NULLPTR, unsigned int deflateLevel=DEFAULT_DEFLATE_LEVEL, unsigned int log2WindowSize=DEFAULT_LOG2_WINDOW_SIZE, bool detectUncompressible=true)
|
|
: Deflator(attachment, deflateLevel, log2WindowSize, detectUncompressible) {}
|
|
ZlibCompressor(const NameValuePairs ¶meters, BufferedTransformation *attachment=NULLPTR)
|
|
: Deflator(parameters, attachment) {}
|
|
|
|
unsigned int GetCompressionLevel() const;
|
|
|
|
protected:
|
|
void WritePrestreamHeader();
|
|
void ProcessUncompressedData(const byte *string, size_t length);
|
|
void WritePoststreamTail();
|
|
|
|
Adler32 m_adler32;
|
|
};
|
|
|
|
/// ZLIB Decompressor (RFC 1950)
|
|
class ZlibDecompressor : public Inflator
|
|
{
|
|
public:
|
|
typedef Inflator::Err Err;
|
|
class HeaderErr : public Err {public: HeaderErr() : Err(INVALID_DATA_FORMAT, "ZlibDecompressor: header decoding error") {}};
|
|
class Adler32Err : public Err {public: Adler32Err() : Err(DATA_INTEGRITY_CHECK_FAILED, "ZlibDecompressor: ADLER32 check error") {}};
|
|
class UnsupportedAlgorithm : public Err {public: UnsupportedAlgorithm() : Err(INVALID_DATA_FORMAT, "ZlibDecompressor: unsupported algorithm") {}};
|
|
class UnsupportedPresetDictionary : public Err {public: UnsupportedPresetDictionary() : Err(INVALID_DATA_FORMAT, "ZlibDecompressor: unsupported preset dictionary") {}};
|
|
|
|
//! \brief Construct a ZlibDecompressor
|
|
//! \param attachment a \ BufferedTransformation to attach to this object
|
|
//! \param repeat decompress multiple compressed streams in series
|
|
//! \param autoSignalPropagation 0 to turn off MessageEnd signal
|
|
ZlibDecompressor(BufferedTransformation *attachment = NULLPTR, bool repeat = false, int autoSignalPropagation = -1);
|
|
unsigned int GetLog2WindowSize() const {return m_log2WindowSize;}
|
|
|
|
private:
|
|
unsigned int MaxPrestreamHeaderSize() const {return 2;}
|
|
void ProcessPrestreamHeader();
|
|
void ProcessDecompressedData(const byte *string, size_t length);
|
|
unsigned int MaxPoststreamTailSize() const {return 4;}
|
|
void ProcessPoststreamTail();
|
|
|
|
unsigned int m_log2WindowSize;
|
|
Adler32 m_adler32;
|
|
};
|
|
|
|
NAMESPACE_END
|
|
|
|
#endif
|