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https://github.com/Xevion/easy7zip.git
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739ec50c75
- long distance matching is enabled - the compression should improve, the speed also - decompression code is single threaded only
100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
// (C) 2016 - 2018 Tino Reichardt
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#define ZSTD_STATIC_LINKING_ONLY
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#include "../../../C/Alloc.h"
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#include "../../../C/Threads.h"
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#include "../../../C/zstd/zstd.h"
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#include "../../Windows/System.h"
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#include "../../Common/Common.h"
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#include "../../Common/MyCom.h"
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#include "../ICoder.h"
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#include "../Common/StreamUtils.h"
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#include "../Common/RegisterCodec.h"
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#include "../Common/ProgressMt.h"
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/**
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* possible return values @ 7zip:
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* S_OK / S_FALSE
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* E_NOTIMPL
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* E_NOINTERFACE
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* E_ABORT
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* E_FAIL
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* E_OUTOFMEMORY
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* E_INVALIDARG
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*/
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#define ZSTD_LEVEL_MIN 1
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#define ZSTD_LEVEL_MAX 22
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#define ZSTD_THREAD_MAX 128
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namespace NCompress {
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namespace NZSTD {
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struct DProps
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{
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DProps() { clear (); }
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void clear ()
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{
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memset(this, 0, sizeof (*this));
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_ver_major = ZSTD_VERSION_MAJOR;
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_ver_minor = ZSTD_VERSION_MINOR;
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_level = 3;
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}
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Byte _ver_major;
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Byte _ver_minor;
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Byte _level;
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Byte _reserved[2];
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};
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class CDecoder:public ICompressCoder,
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public ICompressSetDecoderProperties2,
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public ICompressSetCoderMt,
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public CMyUnknownImp
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{
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CMyComPtr < ISequentialInStream > _inStream;
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DProps _props;
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ZSTD_DCtx* _ctx;
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void* _srcBuf;
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void* _dstBuf;
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size_t _srcBufSize;
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size_t _dstBufSize;
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UInt64 _processedIn;
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UInt64 _processedOut;
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UInt32 _numThreads;
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HANDLE _hMutex;
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HRESULT CodeSpec(ISequentialInStream *inStream, ISequentialOutStream *outStream, ICompressProgressInfo *progress);
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HRESULT SetOutStreamSizeResume(const UInt64 *outSize);
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public:
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MY_QUERYINTERFACE_BEGIN2(ICompressCoder)
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MY_QUERYINTERFACE_ENTRY(ICompressSetDecoderProperties2)
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#ifndef NO_READ_FROM_CODER
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MY_QUERYINTERFACE_ENTRY(ICompressSetInStream)
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#endif
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MY_QUERYINTERFACE_ENTRY(ICompressSetCoderMt)
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MY_QUERYINTERFACE_END
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MY_ADDREF_RELEASE
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STDMETHOD (Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
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STDMETHOD (SetDecoderProperties2)(const Byte *data, UInt32 size);
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STDMETHOD (SetOutStreamSize)(const UInt64 *outSize);
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STDMETHOD (SetNumberOfThreads)(UInt32 numThreads);
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#ifndef NO_READ_FROM_CODER
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STDMETHOD (SetInStream)(ISequentialInStream *inStream);
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STDMETHOD (ReleaseInStream)();
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UInt64 GetInputProcessedSize() const { return _processedIn; }
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#endif
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HRESULT CodeResume(ISequentialOutStream *outStream, const UInt64 *outSize, ICompressProgressInfo *progress);
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CDecoder();
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virtual ~CDecoder();
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};
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}}
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