/*++

Copyright (C) 2018 3MF Consortium

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are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
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this list of conditions and the following disclaimer in the documentation
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Abstract:

NMR_ExportStream.h defines the ExportStream Class.
This is an abstract base stream class for exporting from various data sources.

--*/

#ifndef __NMR_EXPORTSTREAM
#define __NMR_EXPORTSTREAM

#include "Common/NMR_Types.h"
#include "Common/NMR_Local.h"
#include "Common/Platform/NMR_ImportStream.h"

#define NMR_EXPORTSTREAM_WRITEBUFFERSIZE (128 * 1024)

namespace NMR {

	class CExportStream {
	private:
	public:
		virtual nfBool seekPosition(_In_ nfUint64 position, _In_ nfBool bHasToSucceed) = 0;
		virtual nfBool seekForward(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed) = 0;
		virtual nfBool seekFromEnd(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed) = 0;
		virtual nfUint64 getPosition () = 0;
		virtual nfUint64 writeBuffer(_In_ const void * pBuffer, _In_ nfUint64 cbTotalBytesToWrite) = 0;
		void copyFrom(_In_ CImportStream * pImportStream, _In_ nfUint64 cbCount, _In_ nfUint32 cbBufferSize);
	};

	typedef std::shared_ptr <CExportStream> PExportStream;

}

#endif // __NMR_EXPORTSTREAM
