mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-04 16:01:14 -05:00
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
/*
|
|
FILE...: mpdecode_core.h
|
|
AUTHOR.: David Rowe
|
|
CREATED: Sep 2016
|
|
|
|
C-callable core functions for MpDecode, so they can be used for
|
|
Octave and C programs. Also some convenience functions to help use
|
|
the C-callable LDPC decoder in C programs.
|
|
*/
|
|
|
|
#ifndef __MPDECODE_CORE__
|
|
#define __MPDECODE_CORE__
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "codec2/comp.h"
|
|
|
|
namespace FreeDV
|
|
{
|
|
|
|
struct LDPC {
|
|
int max_iter;
|
|
int dec_type;
|
|
int q_scale_factor;
|
|
int r_scale_factor;
|
|
int CodeLength;
|
|
int NumberParityBits;
|
|
int NumberRowsHcols;
|
|
int max_row_weight;
|
|
int max_col_weight;
|
|
int data_bits_per_frame;
|
|
int coded_bits_per_frame;
|
|
int coded_syms_per_frame;
|
|
uint16_t *H_rows;
|
|
uint16_t *H_cols;
|
|
};
|
|
|
|
void encode(struct LDPC *ldpc, unsigned char ibits[], unsigned char pbits[]);
|
|
|
|
int run_ldpc_decoder(struct LDPC *ldpc, uint8_t out_char[], float input[], int *parityCheckCount);
|
|
|
|
void sd_to_llr(float llr[], double sd[], int n);
|
|
void Demod2D(float symbol_likelihood[], COMP r[], COMP S_matrix[], float EsNo, float fading[], float mean_amp, int number_symbols);
|
|
void Somap(float bit_likelihood[], float symbol_likelihood[], int number_symbols);
|
|
void symbols_to_llrs(float llr[], COMP rx_qpsk_symbols[], float rx_amps[], float EsNo, float mean_amp, int nsyms);
|
|
|
|
void ldpc_print_info(struct LDPC *ldpc);
|
|
|
|
} // FreeDV
|
|
|
|
#endif
|