Block4B5BCodec.hh

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#ifndef COSA_BLOCK4B5BCODEC_HH
#define COSA_BLOCK4B5BCODEC_HH

#include <VWI.h>

class Block4B5BCodec : public VWI::Codec {
public:
  Block4B5BCodec() :
    VWI::Codec(5, 0x238, 8)
  {
  }

  virtual const uint8_t* preamble()
  {
    return (s_preamble);
  }

  virtual uint8_t encode4(uint8_t nibble)
  {
    return (pgm_read_byte(&s_symbols[nibble & 0xf]));
  };

  virtual uint8_t decode4(uint8_t symbol)
  {
    return (pgm_read_byte(&s_codes[symbol & SYMBOL_MASK]));
  }

private:
  static const uint8_t s_symbols[] PROGMEM;

  static const uint8_t s_codes[] PROGMEM;

  static const uint8_t s_preamble[] PROGMEM;
};

#endif