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/*****************************************************************************
* *
* OpenNI 2.x Alpha *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of OpenNI. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
#ifndef __XN_CODEC_BASE_H__
#define __XN_CODEC_BASE_H__
//---------------------------------------------------------------------------
// Includes
//---------------------------------------------------------------------------
#include "XnCodec.h"
//---------------------------------------------------------------------------
// Types
//---------------------------------------------------------------------------
class XnCodecBase : public XnCodec
{
public:
static XnCompressionFormats GetCompressionFormatFromCodecID(XnCodecID codecID);
static XnCodecID GetCodecIDFromCompressionFormat(XnCompressionFormats format);
XnCodecBase() {}
virtual ~XnCodecBase() {}
virtual XnStatus Init() { return XN_STATUS_OK; }
virtual XnCompressionFormats GetCompressionFormat() const = 0;
XnStatus Compress(const XnUChar* pData, XnUInt32 nDataSize, XnUChar* pCompressedData, XnUInt32* pnCompressedDataSize)
{
XnStatus nRetVal = XN_STATUS_OK;
XN_VALIDATE_INPUT_PTR(pData);
XN_VALIDATE_INPUT_PTR(pCompressedData);
XN_VALIDATE_OUTPUT_PTR(pnCompressedDataSize);
if ((nDataSize * GetWorseCompressionRatio() + GetOverheadSize()) > *pnCompressedDataSize)
{
return XN_STATUS_OUTPUT_BUFFER_OVERFLOW;
}
nRetVal = CompressImpl(pData, nDataSize, pCompressedData, pnCompressedDataSize);
XN_IS_STATUS_OK(nRetVal);
return (XN_STATUS_OK);
}
XnStatus Decompress(const XnUChar* pCompressedData, XnUInt32 nCompressedDataSize, XnUChar* pData, XnUInt32* pnDataSize)
{
XnStatus nRetVal = XN_STATUS_OK;
XN_VALIDATE_INPUT_PTR(pCompressedData);
XN_VALIDATE_INPUT_PTR(pData);
XN_VALIDATE_OUTPUT_PTR(pnDataSize);
nRetVal = DecompressImpl(pCompressedData, nCompressedDataSize, pData, pnDataSize);
XN_IS_STATUS_OK(nRetVal);
return (XN_STATUS_OK);
}
virtual XnUInt32 GetOverheadSize() const = 0;
virtual XnFloat GetWorseCompressionRatio() const = 0;
protected:
virtual XnStatus CompressImpl(const XnUChar* pData, XnUInt32 nDataSize, XnUChar* pCompressedData, XnUInt32* pnCompressedDataSize) = 0;
virtual XnStatus DecompressImpl(const XnUChar* pCompressedData, XnUInt32 nCompressedDataSize, XnUChar* pData, XnUInt32* pnDataSize) = 0;
};
#endif // __XN_CODEC_BASE_H__
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