90 lines
1.7 KiB
C
90 lines
1.7 KiB
C
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// MultiStream.h
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#ifndef __MULTI_STREAM_H
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#define __MULTI_STREAM_H
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#include "../../../Common/MyCom.h"
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#include "../../../Common/MyVector.h"
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#include "../../IStream.h"
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class CMultiStream:
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public IInStream,
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public CMyUnknownImp
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{
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UInt64 _pos;
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UInt64 _totalLength;
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unsigned _streamIndex;
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public:
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struct CSubStreamInfo
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{
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CMyComPtr<IInStream> Stream;
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UInt64 Size;
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UInt64 GlobalOffset;
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UInt64 LocalPos;
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CSubStreamInfo(): Size(0), GlobalOffset(0), LocalPos(0) {}
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};
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CObjectVector<CSubStreamInfo> Streams;
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HRESULT Init()
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{
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UInt64 total = 0;
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FOR_VECTOR (i, Streams)
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{
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CSubStreamInfo &s = Streams[i];
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s.GlobalOffset = total;
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total += Streams[i].Size;
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RINOK(s.Stream->Seek(0, STREAM_SEEK_CUR, &s.LocalPos));
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}
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_totalLength = total;
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_pos = 0;
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_streamIndex = 0;
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return S_OK;
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}
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MY_UNKNOWN_IMP1(IInStream)
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STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
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STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);
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};
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/*
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class COutMultiStream:
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public IOutStream,
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public CMyUnknownImp
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{
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unsigned _streamIndex; // required stream
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UInt64 _offsetPos; // offset from start of _streamIndex index
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UInt64 _absPos;
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UInt64 _length;
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struct CSubStreamInfo
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{
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CMyComPtr<ISequentialOutStream> Stream;
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UInt64 Size;
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UInt64 Pos;
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};
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CObjectVector<CSubStreamInfo> Streams;
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public:
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CMyComPtr<IArchiveUpdateCallback2> VolumeCallback;
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void Init()
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{
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_streamIndex = 0;
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_offsetPos = 0;
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_absPos = 0;
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_length = 0;
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}
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MY_UNKNOWN_IMP1(IOutStream)
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STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize);
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STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition);
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};
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*/
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#endif
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