28 lines
819 B
C
28 lines
819 B
C
#include <math.h>
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#include "libcsdr.h"
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#include "libcsdr_gpl.h"
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typedef struct fastddc_s
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{
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int pre_decimation;
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int post_decimation;
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int taps_length;
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int taps_min_length;
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int overlap_length; //it is taps_length - 1
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int fft_size;
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int fft_inv_size;
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int input_size;
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int post_input_size;
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float pre_shift;
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int startbin; //for pre_shift
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int v; //step for pre_shift
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int offsetbin;
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float post_shift;
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int output_scrape;
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int scrap;
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shift_addition_data_t dsadata;
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} fastddc_t;
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int fastddc_init(fastddc_t* ddc, float transition_bw, int decimation, float shift_rate);
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decimating_shift_addition_status_t fastddc_inv_cc(complexf* input, complexf* output, fastddc_t* ddc, FFT_PLAN_T* plan_inverse, complexf* taps_fft, decimating_shift_addition_status_t shift_stat);
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void fastddc_print(fastddc_t* ddc, char* source);
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