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#pragma once
#include "core/module.h"
class SoftSymbolReader
{
private:
std::istream &data_in;
std::shared_ptr<dsp::RingBuffer<uint8_t>> &input_fifo;
ModuleDataType &input_data_type;
bool convert_from_hard = false;
int tmp_hard_buff_pos = 0;
uint8_t *tmp_hard_buff;
void readMore()
{
if (input_data_type == DATA_FILE)
data_in.read((char *)tmp_hard_buff, 1024);
else
input_fifo->read((uint8_t *)tmp_hard_buff, 1024);
tmp_hard_buff_pos = 0;
}
public:
SoftSymbolReader(std::istream &data_in,
std::shared_ptr<dsp::RingBuffer<uint8_t>> &input_fifo,
ModuleDataType &input_data_type,
nlohmann::json ¶ms)
: data_in(data_in), input_fifo(input_fifo), input_data_type(input_data_type)
{
if (params.contains("hard_symbols"))
convert_from_hard = params["hard_symbols"];
if (convert_from_hard)
tmp_hard_buff = new uint8_t[1024];
}
~SoftSymbolReader()
{
if (convert_from_hard)
delete[] tmp_hard_buff;
}
inline void readSoftSymbols(int8_t *buffer, int length)
{
if (convert_from_hard)
{
for (int i = 0; i < length; i++)
{
uint8_t bit = (tmp_hard_buff[tmp_hard_buff_pos / 8] >> (7 - (tmp_hard_buff_pos % 8))) & 1;
buffer[i] = bit ? 70 : -70;
tmp_hard_buff_pos++;
if (tmp_hard_buff_pos == 1024 * 8)
readMore();
}
}
else
{
if (input_data_type == DATA_FILE)
data_in.read((char *)buffer, length);
else
input_fifo->read((uint8_t *)buffer, length);
}
}
};
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