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#pragma once
#include "ldpc_decoder.h"
// Based on gr-ccsds
namespace codings
{
namespace ldpc
{
class LDPCDecoderGeneric : public LDPCDecoder
{
public:
LDPCDecoderGeneric(Sparse_matrix pcm);
~LDPCDecoderGeneric();
int decode(uint8_t *out, const int8_t *in, int it);
int simd() { return 1; }
private:
int d_pcm_num_cn;
int d_pcm_num_vn;
int d_pcm_max_cn_degree;
int d_pcm_num_edges;
/* Buffer holding vn values during decode */
int16_t *d_vns;
/* Buffer to hold all messages coming from VNs to a single CN */
int16_t *d_vns_to_cn_msgs;
/* Buffer to hold the absolute value of messages coming from VNs
* to CNs */
int16_t *d_abs_msgs;
/* Buffer to hold all messages from CNs to VNs containing
* error correcting values. */
int16_t *d_cn_to_vn_msgs;
/* Buffer representing the parity check matrix. Instead of having all offsets of
* each VN in the VN buffer, we store directly its addresses in the buffer */
int16_t **d_vn_addr;
/* Array of row position and degree of each cn */
int *d_row_pos_deg;
void generic_cn_kernel(int cn_idx);
// Used by generic_cn_kernel
int16_t sign;
int16_t parity;
uint16_t min, min1, min2;
uint16_t abs_msg;
int16_t new_msg, msg;
int16_t abs_mask;
int16_t equ_min1;
int16_t to_vn;
int cn_deg;
int cn_row_base; // offset to base of corresponding row in the PCM
int vn_offset;
int cn_offset; // CN offset in the buffer holding CN to VN messages
};
}
}
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