ntv2line21captioner.h

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#ifndef __NTV2_LINE21_CAPTIONER_
#define __NTV2_LINE21_CAPTIONER_
 
#include "ntv2captionlogging.h"
#include "ntv2caption608types.h"
#include <vector>
 
#if !defined(NULL)
    #define NULL 0
#endif
 
class AJAExport CNTV2Line21Captioner : public CNTV2CaptionLogConfig
{
    //  Class Methods
    public:
        static bool                     DecodeLine (const UByte * pLineData, UByte & outChar1, UByte & outChar2);
 
        static bool                     DecodeLine (const std::vector<uint8_t> & inLineData, std::vector<uint8_t> & outData);
 
        static const UByte *            FindFirstDataBit_NTSC (const void * pInVideoLine);
 
        static std::vector<uint8_t>::size_type  FindFirstDataBit_NTSC (const std::vector<uint8_t> & in2VUYLine);
 
 
    //  Class Data
    public:
        static const UWord              CC_LINE_WIDTH_PIXELS        =   720;                        
        static const UWord              ENCODE_LINE_LENGTH_BYTES    =   CC_LINE_WIDTH_PIXELS * 2;   
 
 
    //  Instance Methods
    public:
                                        CNTV2Line21Captioner ();
 
        virtual                         ~CNTV2Line21Captioner ();
 
        virtual UByte *                 EncodeLine (const UByte inByte1, const UByte inByte2);
 
    private:
        virtual void                    InitEncodeBuffer (void);
        virtual UByte *                 EncodeCharacter (UByte * pBuffer, const UByte inByte);
 
    //  Instance Data
    private:
        UByte   mEncodeBuffer [CC_LINE_WIDTH_PIXELS * 2];   
        bool    mEncodeBufferInitialized;                   
        ULWord  mEncodePixelOffset;                         
        ULWord  mEncodeFirstDataBitOffset;                  
 
};  //  CNTV2Line21Captioner
 
#endif  //  __NTV2_LINE21_CAPTIONER_