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68 lines
1.5 KiB
C++
68 lines
1.5 KiB
C++
// Compress/CopyCoder.cpp
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#include "StdAfx.h"
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#include "../../../C/Alloc.h"
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#include "../Common/StreamUtils.h"
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#include "CopyCoder.h"
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namespace NCompress {
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static const UInt32 kBufferSize = 1 << 17;
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CCopyCoder::~CCopyCoder()
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{
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::MidFree(_buffer);
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}
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STDMETHODIMP CCopyCoder::Code(ISequentialInStream *inStream,
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ISequentialOutStream *outStream,
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const UInt64 * /* inSize */, const UInt64 *outSize,
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ICompressProgressInfo *progress)
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{
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if (_buffer == 0)
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{
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_buffer = (Byte *)::MidAlloc(kBufferSize);
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if (_buffer == 0)
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return E_OUTOFMEMORY;
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}
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TotalSize = 0;
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for (;;)
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{
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UInt32 size = kBufferSize;
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if (outSize != 0)
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if (size > *outSize - TotalSize)
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size = (UInt32)(*outSize - TotalSize);
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RINOK(inStream->Read(_buffer, size, &size));
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if (size == 0)
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break;
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if (outStream)
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{
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RINOK(WriteStream(outStream, _buffer, size));
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}
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TotalSize += size;
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if (progress != NULL)
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{
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RINOK(progress->SetRatioInfo(&TotalSize, &TotalSize));
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}
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}
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return S_OK;
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}
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STDMETHODIMP CCopyCoder::GetInStreamProcessedSize(UInt64 *value)
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{
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*value = TotalSize;
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return S_OK;
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}
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HRESULT CopyStream(ISequentialInStream *inStream, ISequentialOutStream *outStream, ICompressProgressInfo *progress)
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{
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CMyComPtr<ICompressCoder> copyCoder = new NCompress::CCopyCoder;
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return copyCoder->Code(inStream, outStream, NULL, NULL, progress);
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}
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}
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