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DaqBuffer.h

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#ifndef DAQREADOUTFORMAT_DAQBUFFER_H
#define DAQREADOUTFORMAT_DAQBUFFER_H

/*
 *  DaqBuffer.h
 *  DaqReadoutFormat
 *
 *  Created by Simon Patton on 7/19/10.
 *  Copyright 2010 DayaBay Collaboration. All rights reserved.
 *
 */
#include <vector>

namespace DybDaq {
    class BitsInspector;
    class ByteBuffer;
    class ByteInspector;
    class DaqTraits;
}

namespace DybDaq {
    
    class DaqBuffer {
        
    public:
        
        typedef std::pair<const char*, unsigned int> OutputBuffer;
        typedef std::vector<OutputBuffer> OutputBufferList;
        typedef std::vector<ByteInspector*> Bytes;
        typedef std::vector<BitsInspector*> Bits;
        
        static const unsigned int kBytesInInt;
        static const unsigned int kUndefinedFormatComponent;
        
        
        virtual ~DaqBuffer();
        
        bool hasDaqTraits() const;
        
        virtual const DaqTraits& daqTraits() const;
        
        virtual unsigned int gather(OutputBufferList& outputBuffers) const;
        
        virtual unsigned int inspect(DaqBuffer::Bytes& inspectors) const;
        
        virtual unsigned int bufferSize() const = 0;
        
    protected:
        
        DaqBuffer(const DaqBuffer& rhs);
        
        DaqBuffer(char* buffer,
                  const DaqTraits& traits,
                  const unsigned int size = 0);
        
        DaqBuffer(const ByteBuffer& byteBuffer,
                  const DaqTraits& traits);
        
        const char* buffer() const;
        
        bool hasByteBuffer() const;
        
        const ByteBuffer& byteBuffer() const;
        
        unsigned int fillInspectors(DaqBuffer::Bytes& inspectors,
                                    unsigned int component,
                                    unsigned int cursor) const;
        
        virtual bool readBool(const unsigned int field) const;
        
        virtual int readInt(const unsigned int field) const;
        
        virtual unsigned char readUnsignedChar(const unsigned int field) const;
        
        virtual unsigned int readUnsignedInt(const unsigned int field) const;
        
        char* buffer();
        
        virtual void writeField(const bool value,
                                const unsigned int field);
        
        virtual void writeField(const int value,
                                const unsigned int field);
        
        virtual void writeField(const unsigned int value,
                                const unsigned int field);
        
        virtual unsigned int formatComponent() const;
        
    private:
        
        DaqBuffer();
        
        DaqBuffer& operator=(const DaqBuffer& rhs);
        
        const ByteBuffer* m_byteBuffer;
        
        const char* m_buffer;
        
        const DaqTraits* m_traits;
    };
    
}

#endif // DAQREADOUTFORMAT_DAQBUFFER_H

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