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pelgraine
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
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FILE...: mpdecode_core.h
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AUTHOR.: David Rowe
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CREATED: Sep 2016
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C-callable core functions for MpDecode, so they can be used for
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Octave and C programs. Also some convenience functions to help use
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the C-callable LDPC decoder in C programs.
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*/
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#ifndef __MPDECODE_CORE__
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#define __MPDECODE_CORE__
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struct LDPC {
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int max_iter;
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int dec_type;
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int q_scale_factor;
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int r_scale_factor;
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int CodeLength;
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int NumberParityBits;
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int NumberRowsHcols;
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int max_row_weight;
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int max_col_weight;
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double *H_rows;
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double *H_cols;
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};
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int run_ldpc_decoder(struct LDPC *ldpc, char out_char[], double input[]);
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void sd_to_llr(double llr[], double sd[], int n);
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struct v_node {
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int degree;
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float initial_value;
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int *index; /* the index of a c_node it is connected to */
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int *socket; /* socket number at the c_node */
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float *message;
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int *sign;
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};
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struct c_node {
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int degree;
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int *index;
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float *message;
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int *socket; /* socket number at the v_node */
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};
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void init_c_v_nodes(struct c_node *c_nodes,
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int shift,
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int NumberParityBits,
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int max_row_weight,
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double *H_rows,
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int H1,
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int CodeLength,
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struct v_node *v_nodes,
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int NumberRowsHcols,
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double *H_cols,
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int max_col_weight,
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int dec_type,
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double *input);
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void ApproximateMinStar( int BitErrors[],
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int DecodedBits[],
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struct c_node c_nodes[],
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struct v_node v_nodes[],
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int CodeLength,
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int NumberParityBits,
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int max_iter );
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void MinSum( int BitErrors[],
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int DecodedBits[],
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struct c_node c_nodes[],
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struct v_node v_nodes[],
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int CodeLength,
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int NumberParityBits,
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int max_iter,
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float r_scale_factor,
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float q_scale_factor,
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int data[] );
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void SumProduct( int BitErrors[],
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int DecodedBits[],
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struct c_node c_nodes[],
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struct v_node v_nodes[],
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int CodeLength,
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int NumberParityBits,
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int max_iter,
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float r_scale_factor,
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float q_scale_factor,
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int data[]);
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#endif
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