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Add check of number of erasures, remove unused parameter in private method

This commit is contained in:
Carles Fernandez 2021-04-01 13:21:11 +02:00
parent a32ea2ab9c
commit 5cd1955dc0
2 changed files with 9 additions and 4 deletions
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11
src/core/system_parameters/reed_solomon.cc
View File

@ -745,10 +745,15 @@ int ReedSolomon::decode(std::vector<uint8_t>& data_to_decode, const std::vector<
std::cerr << "Reed Solomon usage error: wrong vector input size in decode method.\n";
return result;
}
if (erasure_positions.size() > std::size_t(d_nroots))
{
std::cerr << "Reed Solomon usage error: too much erasure positions.\n";
return result;
}
if (d_shortening == 0)
{
result = decode_rs_8(data_to_decode.data(), erasure_positions.data(), erasure_positions.size(), d_pad);
result = decode_rs_8(data_to_decode.data(), erasure_positions.data(), erasure_positions.size());
}
else
{
@ -757,7 +762,7 @@ int ReedSolomon::decode(std::vector<uint8_t>& data_to_decode, const std::vector<
std::copy(data_to_decode.begin(), data_to_decode.begin() + d_info_symbols_shortened, unshortened_code_vector.begin());
std::copy(data_to_decode.begin() + d_info_symbols_shortened, data_to_decode.begin() + d_data_symbols_shortened, unshortened_code_vector.begin() + d_data_in_block);
result = decode_rs_8(unshortened_code_vector.data(), erasure_positions.data(), erasure_positions.size(), d_pad);
result = decode_rs_8(unshortened_code_vector.data(), erasure_positions.data(), erasure_positions.size());
if (result >= 0)
{
// Store decoded result into the shortened code vector
@ -769,7 +774,7 @@ int ReedSolomon::decode(std::vector<uint8_t>& data_to_decode, const std::vector<
}
int ReedSolomon::decode_rs_8(uint8_t* data, const int* eras_pos, int no_eras, int pad) const
int ReedSolomon::decode_rs_8(uint8_t* data, const int* eras_pos, int no_eras) const
{
int deg_lambda;
int el;

2
src/core/system_parameters/reed_solomon.h
View File

@ -123,7 +123,7 @@ private:
int mod255(int x) const;
int rs_min(int a, int b) const;
int decode_rs_8(uint8_t* data, const int* eras_pos, int no_eras, int pad) const;
int decode_rs_8(uint8_t* data, const int* eras_pos, int no_eras) const;
uint8_t galois_mul(uint8_t a, uint8_t b) const;
uint8_t galois_add(uint8_t a, uint8_t b) const;