shallow zip-file copy from codec2 e9d726bf20

1 files changed, 56 insertions, 0 deletions

diff --git a/src/mpdecode_core.h b/src/mpdecode_core.h
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--- /dev/null
+++ b/src/mpdecode_core.h
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+/*
+  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 "comp.h"
+
+struct LDPC {
+    char name[32];
+    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;
+
+    uint16_t *H_rows;
+    uint16_t *H_cols;
+    
+    /* these two are fixed to code params */
+    int ldpc_data_bits_per_frame;
+    int ldpc_coded_bits_per_frame;
+
+    /* support for partial use of data bits in codeword and unequal protection schemes */
+    int protection_mode; 
+    int data_bits_per_frame;
+    int coded_bits_per_frame;
+};
+
+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[], float 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 M, int bps, int number_symbols);
+void symbols_to_llrs(float llr[], COMP rx_qpsk_symbols[], float rx_amps[], float EsNo, float mean_amp, int nsyms);
+void fsk_rx_filt_to_llrs(float llr[], float rx_filt[], float v_est, float SNRest, int M, int nsyms);
+
+void ldpc_print_info(struct LDPC *ldpc);
+
+
+#endif