outcallback.hpp

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#pragma once
 
#include <cstdint>
 
namespace itk::itkpix::endec {
 
struct OutputError {
 
  enum error_t {
    UNDEFINED         = 0, 
    QCOL_RANGE_ERROR  = 1, 
    QROW_RANGE_ERROR  = 2, 
    QROW_ORDER_ERROR  = 3, 
    WRONG_STATE_ERROR = 4, 
    TOT_NOHIT_ERROR   = 5  
  };
 
  error_t code; 
  uint8_t qcol; 
  uint8_t qrow; 
 
};
 
namespace intf {
 
class OutputCallback {
public:
  virtual ~OutputCallback() = default;
 
  virtual void out_init() = 0;
 
  virtual void out_next(uint8_t nbits) = 0;
 
  virtual void out_done(uint8_t nbits) = 0;
 
  virtual void out_data(uint64_t data) = 0;
 
 
  virtual uint8_t on_error(OutputError error) = 0;
};
 
} // intf
 
namespace concepts {
 
template<typename T>
concept OutputCallback =
  std::destructible<T> and
  requires(T self, uint8_t tag) {
    { self.out_init(tag) } -> std::same_as<void>;
    { self.out_next(tag) } -> std::same_as<void>;
    { self.out_done() } -> std::same_as<void>;
  } and
  requires(T self, uint64_t data) {
    { self.out_data(data) } -> std::same_as<void>;
  } and
  requires(T self, OutputError error) {
    { self.on_error(error) } -> std::same_as<uint8_t>;
  };
 
} // concepts
 
} // itk::itkpix::encoder