110 lines
4.5 KiB
C++
Executable File
110 lines
4.5 KiB
C++
Executable File
/*
|
|
(**************************************************************************)
|
|
(* *)
|
|
(* 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
|