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2512b6593c
- using the recommended buffersizes from zstd lib - compile also an codec dll with support for legacy versions
102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
// ZstdDecoder.h
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// (C) 2016 Tino Reichardt
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/**
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* you can define ZSTD_LEGACY_SUPPORT to be backwards compatible
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* with these versions: 0.5, 0.6, 0.7, 0.8 (0.8 == 1.0)
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*
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* /TR 2016-09-04
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*/
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#define ZSTD_STATIC_LINKING_ONLY
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#include "../../../C/Alloc.h"
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#include "../../../C/ZStd/zstd.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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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 = 1;
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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, public ICompressSetBufSize,
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#ifndef NO_READ_FROM_CODER
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public ICompressSetInStream,
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public ICompressSetOutStreamSize, public ISequentialInStream,
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#endif
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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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bool _propsWereSet;
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ZSTD_DStream *_dstream;
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void *_buffIn;
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void *_buffOut;
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size_t _buffInSize;
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size_t _buffOutSize;
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size_t _buffInSizeAllocated;
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size_t _buffOutSizeAllocated;
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UInt64 _processedIn;
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UInt64 _processedOut;
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HRESULT CDecoder::CreateDecompressor();
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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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MY_QUERYINTERFACE_ENTRY (ICompressSetBufSize)
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#ifndef NO_READ_FROM_CODER
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MY_QUERYINTERFACE_ENTRY (ICompressSetInStream)
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MY_QUERYINTERFACE_ENTRY (ICompressSetOutStreamSize)
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MY_QUERYINTERFACE_ENTRY (ISequentialInStream)
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#endif
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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 (SetInBufSize) (UInt32 streamIndex, UInt32 size);
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STDMETHOD (SetOutBufSize) (UInt32 streamIndex, UInt32 size);
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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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STDMETHOD (Read) (void *data, UInt32 size, UInt32 *processedSize);
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HRESULT CodeResume (ISequentialOutStream *outStream, const UInt64 *outSize, ICompressProgressInfo *progress);
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UInt64 GetInputProcessedSize () const { return _processedIn; }
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#endif
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CDecoder();
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virtual ~CDecoder();
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};
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}}
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