SaraP
70 lines
2.5 KiB
C++
70 lines
2.5 KiB
C++
/*++
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Copyright (C) 2019 3MF Consortium
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Abstract:
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NMR_ExportStream_Compressed.h defines a stream to write compressed files
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--*/
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#ifndef __NMR_EXPORTSTREAM_COMPRESSED
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#define __NMR_EXPORTSTREAM_COMPRESSED
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#include "Common/NMR_Types.h"
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#include "Common/Platform/NMR_ExportStream.h"
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#include "Common/Platform/NMR_PortableZIPWriter.h"
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#include "Libraries/zlib/zlib.h"
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#define EXPORTSTREAM_WRITE_BUFFER_CHUNKSIZE 1024
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namespace NMR {
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class CExportStream_Compressed: public CExportStream {
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private:
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z_stream m_strm;
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PExportStream m_pUncompressedStream;
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nfByte out[EXPORTSTREAM_WRITE_BUFFER_CHUNKSIZE];
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nfInt32 compress(nfInt32 flush);
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public:
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CExportStream_Compressed() = delete;
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CExportStream_Compressed(PExportStream pUncompressedStream);
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~CExportStream_Compressed();
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virtual nfBool seekPosition(_In_ nfUint64 position, _In_ nfBool bHasToSucceed);
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virtual nfBool seekForward(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed);
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virtual nfBool seekFromEnd(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed);
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virtual nfUint64 getPosition();
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virtual nfUint64 writeBuffer(_In_ const void * pBuffer, _In_ nfUint64 cbTotalBytesToWrite);
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virtual void close();
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};
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typedef std::shared_ptr <CExportStream_Compressed> PExportStream_Compressed;
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}
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#endif // __NMR_EXPORTSTREAM_COMPRESSED
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