dpnm.h

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/* ////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2004-2005 Intel Corporation. All Rights Reserved.
//
//
//
*/

#ifndef __DPNM_H__
#define __DPNM_H__

#include "dpnmimagedata.h"
#include "dpnminfo.h"
#include "bdiagnoutput.h"

template<class ByteInput>
class PNMDecoder
{
public:
    PNMDecoder() : m_stream(0) {}

    const PNMInfo &Info() const { return m_info; }

    void Attach(ByteInput &stream) { m_stream = &stream; }
    void Detach()                  { m_stream = 0;       }

    void AttachDiagnOutput(BDiagnOutput &diagnOutput)
    {
        m_diagnOutputPtr = diagnOutput;
        m_info.AttachDiagnOutput(diagnOutput);
    }

    void ReadFileHeader             ()                      { m_info.Read(Stream()); }
    void CheckMagicNumberConformance(const char *fileExt)   { m_info.CheckMagicNumberConformance(fileExt); }

    template<class T>
        void ReadImageData(const ImageCoreC<T, 1> *channel) { ReadPNMImageData(Stream(), m_info, channel); }

protected:
    DPNMInfo      m_info;
    ByteInput    *m_stream;
    BDiagnOutputPtr m_diagnOutputPtr;

    ByteInput &Stream() { return *m_stream; }
};

#endif // __DPNM_H__