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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#ifndef SRSLTE_BLOCK_H
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#define SRSLTE_BLOCK_H
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#include "srslte/config.h"
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#include <stdbool.h>
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#include <stdint.h>
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/**
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* @brief Maximum number of bits that can be encoded
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*/
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#define SRSLTE_FEC_BLOCK_MAX_NOF_BITS 11U
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/**
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* @brief Block coding output complete length
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*/
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#define SRSLTE_FEC_BLOCK_SIZE 32U
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/**
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* @brief Encodes unpacked data using Reed–Muller code block channel coding.
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*
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* @remark Described by 3GPP 36.212 section 5.2.3.3 for 4G/LTE
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* @remark Described by 3GPP 38.212 section 5.3.3.3 for 5G/LTE
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*
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* @param[in] input provides unpacked bits to encode
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* @param[in] input_len number of bits to encode, the maximum number of bits is SRSLTE_FEC_BLOCK_MAX_NOF_BITS
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* @param[out] output points to the unpacked encoded data
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* @param[in] output_len number of bits of encoded bits
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*/
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SRSLTE_API void srslte_block_encode(const uint8_t* input, uint32_t input_len, uint8_t* output, uint32_t output_len);
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/**
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* @brief Decodes 16-bit signed data using Reed–Muller code block channel coding.
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*
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* @param[in] llr Provides received LLRs
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* @param[in] nof_llr number of available LLRs
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* @param[out] data Data destination to store unpacked received bits
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* @param[in] data_len number of bits to decode, the maximum number of bits is SRSLTE_FEC_BLOCK_MAX_NOF_BITS
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* @return Decoded bits correlation if provided arguments are valid, otherwise SRSLTE_ERROR code
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*/
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SRSLTE_API int32_t srslte_block_decode_i16(const int16_t* llr, uint32_t nof_llr, uint8_t* data, uint32_t data_len);
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/**
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* @brief Decodes 8-bit signed data using Reed–Muller code block channel coding.
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*
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* @param[in] llr Provides received LLRs
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* @param[in] nof_llr number of available LLRs
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* @param[out] data Data destination to store unpacked received bits
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* @param[in] data_len number of bits to decode, the maximum number of bits is SRSLTE_FEC_BLOCK_MAX_NOF_BITS
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* @return Decoded bits correlation if provided arguments are valid, otherwise SRSLTE_ERROR code
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*/
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SRSLTE_API int32_t srslte_block_decode_i8(const int8_t* llr, uint32_t nof_llr, uint8_t* data, uint32_t data_len);
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#endif // SRSLTE_BLOCK_H
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