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