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schifra_ecc_traits.hpp
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schifra_ecc_traits.hpp
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/*
(**************************************************************************)
(* *)
(* Schifra *)
(* Reed-Solomon Error Correcting Code Library *)
(* *)
(* Release Version 0.0.1 *)
(* http://www.schifra.com *)
(* Copyright (c) 2000-2020 Arash Partow, All Rights Reserved. *)
(* *)
(* The Schifra Reed-Solomon error correcting code library and all its *)
(* components are supplied under the terms of the General Schifra License *)
(* agreement. The contents of the Schifra Reed-Solomon error correcting *)
(* code library and all its components may not be copied or disclosed *)
(* except in accordance with the terms of that agreement. *)
(* *)
(* URL: http://www.schifra.com/license.html *)
(* *)
(**************************************************************************)
*/
#ifndef INCLUDE_SCHIFRA_ECC_TRAITS_HPP
#define INCLUDE_SCHIFRA_ECC_TRAITS_HPP
namespace schifra
{
namespace traits
{
template <std::size_t code_length> struct symbol;
/* bits per symbol */
template <> struct symbol< 3> { enum {size = 2}; };
template <> struct symbol< 7> { enum {size = 3}; };
template <> struct symbol< 15> { enum {size = 4}; };
template <> struct symbol< 31> { enum {size = 5}; };
template <> struct symbol< 63> { enum {size = 6}; };
template <> struct symbol< 127> { enum {size = 7}; };
template <> struct symbol< 255> { enum {size = 8}; };
template <> struct symbol< 511> { enum {size = 9}; };
template <> struct symbol< 1023> { enum {size = 10}; };
template <> struct symbol< 2047> { enum {size = 11}; };
template <> struct symbol< 4195> { enum {size = 12}; };
template <> struct symbol< 8191> { enum {size = 13}; };
template <> struct symbol<16383> { enum {size = 14}; };
template <> struct symbol<32768> { enum {size = 15}; };
template <> struct symbol<65535> { enum {size = 16}; };
/* Credits: Modern C++ Design - Andrei Alexandrescu */
template <bool> class __static_assert__
{
public:
__static_assert__(...) {}
};
template <> class __static_assert__<true> {};
template <> class __static_assert__<false>;
template <std::size_t code_length, std::size_t fec_length, std::size_t data_length>
struct validate_reed_solomon_code_parameters
{
private:
__static_assert__<(code_length > 0)> assertion1;
__static_assert__<(code_length > fec_length)> assertion2;
__static_assert__<(code_length > data_length)> assertion3;
__static_assert__<(code_length == fec_length + data_length)> assertion4;
};
template <std::size_t code_length, std::size_t fec_length, std::size_t data_length>
struct validate_reed_solomon_block_parameters
{
private:
__static_assert__<(code_length > 0)> assertion1;
__static_assert__<(code_length > fec_length)> assertion2;
__static_assert__<(code_length > data_length)> assertion3;
__static_assert__<(code_length == fec_length + data_length)> assertion4;
};
template <typename Encoder, typename Decoder>
struct equivalent_encoder_decoder
{
private:
__static_assert__<(Encoder::trait::code_length == Decoder::trait::code_length)> assertion1;
__static_assert__<(Encoder::trait::fec_length == Decoder::trait::fec_length) > assertion2;
__static_assert__<(Encoder::trait::data_length == Decoder::trait::data_length)> assertion3;
};
template <std::size_t code_length_, std::size_t fec_length_, std::size_t data_length_ = code_length_ - fec_length_>
class reed_solomon_triat
{
public:
typedef validate_reed_solomon_code_parameters<code_length_,fec_length_,data_length_> vrscp;
enum { code_length = code_length_ };
enum { fec_length = fec_length_ };
enum { data_length = data_length_ };
};
}
} // namespace schifra
#endif