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#ifndef COMMONS_H
#define COMMONS_H
#include <cstdint>
#include <mutex>
// NSPS, the number of samples per second (at a sample rate of 12000
// samples per second) is a constant, chosen so as to be a number
// with no prime factor greater than 7.
#define JS8_NSPS 6192
#define JS8_NSMAX 6827
#define JS8_NTMAX 60
#define JS8_RX_SAMPLE_RATE 12000
#define JS8_RX_SAMPLE_SIZE (JS8_NTMAX * JS8_RX_SAMPLE_RATE)
#define JS8_RING_BUFFER 1 // use a ring buffer instead of clearing the decode frames
#define JS8_DECODE_THREAD 1 // use a separate thread for decode process handling
#define JS8_ALLOW_EXTENDED 1 // allow extended latin-1 capital charset
#define JS8_AUTO_SYNC 1 // enable the experimental auto sync feature
#define JS8_NUM_SYMBOLS 79
#define JS8_ENABLE_JS8A 1
#define JS8_ENABLE_JS8B 1
#define JS8_ENABLE_JS8C 1
#define JS8_ENABLE_JS8E 1
#define JS8_ENABLE_JS8I 0
#define JS8A_SYMBOL_SAMPLES 1920
#define JS8A_TX_SECONDS 15
#define JS8A_START_DELAY_MS 500
#define JS8B_SYMBOL_SAMPLES 1200
#define JS8B_TX_SECONDS 10
#define JS8B_START_DELAY_MS 200
#define JS8C_SYMBOL_SAMPLES 600
#define JS8C_TX_SECONDS 6
#define JS8C_START_DELAY_MS 100
#define JS8E_SYMBOL_SAMPLES 3840
#define JS8E_TX_SECONDS 30
#define JS8E_START_DELAY_MS 500
#define JS8I_SYMBOL_SAMPLES 384
#define JS8I_TX_SECONDS 4
#define JS8I_START_DELAY_MS 100
extern struct dec_data
{
std::int16_t d2[JS8_RX_SAMPLE_SIZE]; // sample frame buffer for sample collection
struct
{
int nutc; // UTC as integer. See code_time() below for details.
int nfqso; // User-selected QSO freq (kHz)
bool newdat; // true ==> new data, must do long FFT
int nfa; // Low decode limit (Hz) (filter min)
int nfb; // High decode limit (Hz) (filter max)
bool syncStats; // only compute sync candidates
int kin; // number of frames written to d2
int kposA; // starting position of decode for submode A
int kposB; // starting position of decode for submode B
int kposC; // starting position of decode for submode C
int kposE; // starting position of decode for submode E
int kposI; // starting position of decode for submode I
int kszA; // number of frames for decode for submode A
int kszB; // number of frames for decode for submode B
int kszC; // number of frames for decode for submode C
int kszE; // number of frames for decode for submode E
int kszI; // number of frames for decode for submode I
int nsubmodes; // which submodes to decode
} params;
} dec_data;
extern struct
specData
{
float savg[JS8_NSMAX];
float slin[JS8_NSMAX];
}
specData;
extern std::mutex fftw_mutex;
// The way we squeeze a timestamp into an int.
// See also decode_time() below.
inline int code_time(int hour, int minute, int second){
return hour * 10000 + minute * 100 + second;
}
struct hour_minute_second {
int hour;
int minute;
int second;
};
// Undo code_time().
inline hour_minute_second decode_time(int nutc){
struct hour_minute_second result;
result.hour = nutc / 10000;
result.minute = nutc % 10000 / 100;
result.second = nutc % 100;
return result;
}
#endif // COMMONS_H
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