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Merge pull request #74 from Guenael/guenael 

chore: code cleanup
pull/75/head
Guenael, VA2GKA 2021-12-11 12:33:15 -05:00 zatwierdzone przez GitHub
rodzic 2ce8f63337 a17f983384
commit 9c514dc425
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ID klucza GPG: 4AEE18F83AFDEB23
5 zmienionych plików z 54 dodań i 53 usunięć
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3
.gitignore vendored
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@ -1,4 +1,5 @@
*.o
*.iq
rtlsdr_wsprd
wspr_wisdom.dat
fftw_wisdom.dat
hashtable.txt

4
Makefile
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@ -1,6 +1,6 @@
CC = clang
CFLAGS= -O3 -std=gnu17 -Wall # -fsanitize=address
LIBS = -lusb-1.0 -lrtlsdr -lpthread -lfftw3f -lcurl -lm
LIBS = -lusb-1.0 -lrtlsdr -lpthread -lfftw3f -lcurl -lm # -fsanitize=address
OBJS = rtlsdr_wsprd.o wsprd/wsprd.o wsprd/wsprsim_utils.o wsprd/wsprd_utils.o wsprd/tab.o wsprd/fano.o wsprd/nhash.o
@ -17,7 +17,7 @@ rtlsdr_wsprd: $(OBJS)
$(CC) -o $@ $^ $(LIBS)
clean:
rm -f *.o wsprd/*.o $(TARGETS) wspr_wisdom.dat hashtable.txt
rm -f *.o wsprd/*.o $(TARGETS) fftw_wisdom.dat hashtable.txt selftest.iq
install:
install rtlsdr_wsprd /usr/local/lib/rtlsdr_wsprd

78
rtlsdr_wsprd.c
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@ -52,7 +52,7 @@
// #pragma GCC diagnostic ignored "-Wformat-truncation" // Was used with GCC
/* Sampling definition for RTL devices */
#define SIGNAL_LENGHT 116 // FIXME, why not 119?
#define SIGNAL_LENGHT 116 // EVAL, why not 119?
#define SIGNAL_LENGHT_MAX 120
#define SIGNAL_SAMPLE_RATE 375
#define SAMPLING_RATE 2400000
@ -62,12 +62,12 @@
/* Global declaration for states & options */
static struct receiver_state rx_state; // FIXME - Implicit static... (DBG only)
static struct receiver_options rx_options;
static struct decoder_options dec_options;
static struct decoder_results dec_results[50];
static rtlsdr_dev_t *rtl_device = NULL;
// +++ n_results
struct receiver_state rx_state;
struct receiver_options rx_options;
struct decoder_options dec_options;
struct decoder_results dec_results[50];
rtlsdr_dev_t *rtl_device = NULL;
/* Thread stuff for side decoding */
struct decoder_state {
@ -78,7 +78,7 @@ struct decoder_state {
pthread_cond_t ready_cond;
pthread_mutex_t ready_mutex;
};
struct decoder_state dec;
struct decoder_state dec_state;
/* Thread stuff for separate RX (blocking function) */
@ -159,7 +159,8 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
*/
for (int32_t i = 0; i < samples_count / 2; i++) {
/* Integrator stages (N=2) */
Ix1 += (int32_t)sigIn[i * 2]; // FIXME: move sigIn in float here ?
// EVAL: option to move sigIn in float here
Ix1 += (int32_t)sigIn[i * 2];
Qx1 += (int32_t)sigIn[i * 2 + 1];
Ix2 += Ix1;
Qx2 += Qx1;
@ -170,7 +171,7 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
continue;
}
// FIXME/TODO : some optimization here
// EVAL possible optimization here
/* 1st Comb */
Iy1 = Ix2 - It1z;
It1z = It1y;
@ -187,7 +188,6 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
Qt2z = Qt2y;
Qt2y = Qy1;
// FIXME/TODO : could be made with int32_t (8 bits, 20 bits)
/* FIR compensation filter */
float Isum = 0.0, Qsum = 0.0;
for (uint32_t j = 0; j < 32; j++) {
@ -206,17 +206,17 @@ static void rtlsdr_callback(unsigned char *samples, uint32_t samples_count, void
/* Save the result in the buffer */
if (rx_state.iqIndex < (SIGNAL_LENGHT * SIGNAL_SAMPLE_RATE)) {
/* Lock the buffer during writing */
pthread_rwlock_wrlock(&dec.rw);
pthread_rwlock_wrlock(&dec_state.rw);
rx_state.iSamples[rx_state.iqIndex] = Isum / (8192.0 * DOWNSAMPLING);
rx_state.qSamples[rx_state.iqIndex] = Qsum / (8192.0 * DOWNSAMPLING);
pthread_rwlock_unlock(&dec.rw);
pthread_rwlock_unlock(&dec_state.rw);
rx_state.iqIndex++;
} else {
if (rx_state.decode_flag == false) {
/* Send a signal to the other thread to start the decoding */
pthread_mutex_lock(&dec.ready_mutex);
pthread_cond_signal(&dec.ready_cond);
pthread_mutex_unlock(&dec.ready_mutex);
pthread_mutex_lock(&dec_state.ready_mutex);
pthread_cond_signal(&dec_state.ready_cond);
pthread_mutex_unlock(&dec_state.ready_mutex);
rx_state.decode_flag = true;
}
}
@ -341,19 +341,19 @@ static void *wsprDecoder(void *arg) {
int32_t n_results = 0;
while (!rx_state.exit_flag) {
pthread_mutex_lock(&dec.ready_mutex);
pthread_cond_wait(&dec.ready_cond, &dec.ready_mutex);
pthread_mutex_unlock(&dec.ready_mutex);
pthread_mutex_lock(&dec_state.ready_mutex);
pthread_cond_wait(&dec_state.ready_cond, &dec_state.ready_mutex);
pthread_mutex_unlock(&dec_state.ready_mutex);
if (rx_state.exit_flag)
break; /* Abort case, final sig */
/* Lock the buffer access and make a local copy */
pthread_rwlock_wrlock(&dec.rw);
pthread_rwlock_wrlock(&dec_state.rw);
memcpy(iSamples, rx_state.iSamples, rx_state.iqIndex * sizeof(float));
memcpy(qSamples, rx_state.qSamples, rx_state.iqIndex * sizeof(float));
samples_len = rx_state.iqIndex; // Overkill ?
pthread_rwlock_unlock(&dec.rw);
pthread_rwlock_unlock(&dec_state.rw);
/* Date and time will be updated/overload during the search & decoding process
Make a simple copy
@ -584,18 +584,18 @@ int32_t decoderSelfTest() {
static float iSamples[SIGNAL_LENGHT_MAX * SIGNAL_SAMPLE_RATE] = {0};
static float qSamples[SIGNAL_LENGHT_MAX * SIGNAL_SAMPLE_RATE] = {0};
static uint32_t samples_len = SIGNAL_LENGHT_MAX * SIGNAL_SAMPLE_RATE;
int32_t n_results = 0; // FIXME: put n_results as a global variable
int32_t n_results = 0;
unsigned char symbols[162];
char message[] = "K1JT FN20QI 20";
char hashtab[32768*13] = {0};
//char loctab[32768*5] = {0}; // FIXME
//char loctab[32768*5] = {0}; // EVAL: code update from wsprd
// Compute sympbols from the message
get_wspr_channel_symbols(message, hashtab, symbols);
float f0 = 50.0;
float t0 = 2.0; // FIXME !! Caution, possible buffer overflow with the index calculation
float t0 = 2.0; // Caution!! Possible buffer overflow with the index calculation (no user input here!)
float amp = 1.0;
float wgn = 0.02;
double phi = 0.0;
@ -968,20 +968,20 @@ int main(int argc, char **argv) {
/* Prepare a low priority param for the decoder thread */
struct sched_param param;
pthread_attr_init(&dec.tattr);
pthread_attr_setschedpolicy(&dec.tattr, SCHED_RR);
pthread_attr_getschedparam(&dec.tattr, &param);
pthread_attr_init(&dec_state.tattr);
pthread_attr_setschedpolicy(&dec_state.tattr, SCHED_RR);
pthread_attr_getschedparam(&dec_state.tattr, &param);
param.sched_priority = 90; // = sched_get_priority_min();
pthread_attr_setschedparam(&dec.tattr, &param);
pthread_attr_setschedparam(&dec_state.tattr, &param);
/* Create a thread and stuff for separate decoding
Info : https://computing.llnl.gov/tutorials/pthreads/
*/
pthread_rwlock_init(&dec.rw, NULL);
pthread_cond_init(&dec.ready_cond, NULL);
pthread_mutex_init(&dec.ready_mutex, NULL);
pthread_rwlock_init(&dec_state.rw, NULL);
pthread_cond_init(&dec_state.ready_cond, NULL);
pthread_mutex_init(&dec_state.ready_mutex, NULL);
pthread_create(&dongle.thread, NULL, rtlsdr_rx, NULL);
pthread_create(&dec.thread, &dec.tattr, wsprDecoder, NULL);
pthread_create(&dec_state.thread, &dec_state.tattr, wsprDecoder, NULL);
/* Main loop : Wait, read, decode */
while (!rx_state.exit_flag && !(rx_options.maxloop && (nLoop >= rx_options.maxloop))) {
@ -1017,16 +1017,16 @@ int main(int argc, char **argv) {
printf("Bye!\n");
/* Wait the thread join (send a signal before to terminate the job) */
pthread_mutex_lock(&dec.ready_mutex);
pthread_cond_signal(&dec.ready_cond);
pthread_mutex_unlock(&dec.ready_mutex);
pthread_join(dec.thread, NULL);
pthread_mutex_lock(&dec_state.ready_mutex);
pthread_cond_signal(&dec_state.ready_cond);
pthread_mutex_unlock(&dec_state.ready_mutex);
pthread_join(dec_state.thread, NULL);
pthread_join(dongle.thread, NULL);
/* Destroy the lock/cond/thread */
pthread_rwlock_destroy(&dec.rw);
pthread_cond_destroy(&dec.ready_cond);
pthread_mutex_destroy(&dec.ready_mutex);
pthread_rwlock_destroy(&dec_state.rw);
pthread_cond_destroy(&dec_state.ready_cond);
pthread_mutex_destroy(&dec_state.ready_mutex);
pthread_exit(NULL);
return EXIT_SUCCESS;

16
wsprd/wsprd.c
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@ -46,13 +46,13 @@
#define DF 375.0 / 256.0
#define DT 1.0 / 375.0
#define TWOPIDT 2.0 * M_PI *DT
#define TWOPIDT 2.0 * M_PI * DT
#define NIQ 45000
#define NBITS 81
#define NSYM 162
#define NSPERSYM 256
#define NFILT 256
#define NSIG NSYM *NSPERSYM
#define NSIG NSYM * NSPERSYM
/* Possible PATIENCE options: FFTW_ESTIMATE, FFTW_ESTIMATE_PATIENT, FFTW_MEASURE, FFTW_PATIENT, FFTW_EXHAUSTIVE */
#define PATIENCE FFTW_ESTIMATE
@ -62,7 +62,7 @@ fftwf_plan PLAN1,
PLAN3;
int32_t printdata = 0;
uint8_t pr3[NSYM] = {
uint8_t pr3vector[NSYM] = {
1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0,
0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1,
0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 0, 1,
@ -206,9 +206,9 @@ void sync_and_demodulate(float *id, float *qd, long np,
totp = totp + p0 + p1 + p2 + p3;
cmet = (p1 + p3) - (p0 + p2);
ss = ss + cmet * (2 * pr3[i] - 1);
ss = ss + cmet * (2 * pr3vector[i] - 1);
if (mode == 2) { // Compute soft symbols
if (pr3[i]) {
if (pr3vector[i]) {
fsymb[i] = p3 - p1;
} else {
fsymb[i] = p2 - p0;
@ -450,7 +450,7 @@ int32_t wspr_decode(float *idat, float *qdat, uint32_t npoints,
fftwf_complex *fftin, *fftout;
FILE *fp_fftw_wisdom_file, *fhash;
if ((fp_fftw_wisdom_file = fopen("wspr_wisdom.dat", "r"))) { // Open FFTW wisdom
if ((fp_fftw_wisdom_file = fopen("fftw_wisdom.dat", "r"))) { // Open FFTW wisdom
fftwf_import_wisdom_from_file(fp_fftw_wisdom_file);
fclose(fp_fftw_wisdom_file);
}
@ -636,7 +636,7 @@ int32_t wspr_decode(float *idat, float *qdat, uint32_t npoints,
p2 = sqrtf(p2);
p3 = sqrtf(p3);
ss = ss + (2 * pr3[k] - 1) * ((p1 + p3) - (p0 + p2));
ss = ss + (2 * pr3vector[k] - 1) * ((p1 + p3) - (p0 + p2));
pow = pow + p0 + p1 + p2 + p3;
sync1 = ss / pow;
}
@ -811,7 +811,7 @@ int32_t wspr_decode(float *idat, float *qdat, uint32_t npoints,
fftwf_free(fftin);
fftwf_free(fftout);
if ((fp_fftw_wisdom_file = fopen("wspr_wisdom.dat", "w"))) {
if ((fp_fftw_wisdom_file = fopen("fftw_wisdom.dat", "w"))) {
fftwf_export_wisdom_to_file(fp_fftw_wisdom_file);
fclose(fp_fftw_wisdom_file);
}

4
wsprd/wsprd_utils.c
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@ -302,7 +302,7 @@ int unpk_(signed char *message, char *hashtab, char *call_loc_pow, char *call, c
strncat(call_loc_pow, cdbm, 2);
strncat(call_loc_pow, "\0", 1);
int nu = ndbm % 10;
if (nu == 0 || nu == 3 || nu == 7 || nu == 10) { // make sure power is OK
if (nu == 0 || nu == 3 || nu == 7) { // make sure power is OK
ihash = nhash(callsign, strlen(callsign), (uint32_t)146);
strcpy(hashtab + ihash * 13, callsign);
} else {
@ -324,7 +324,7 @@ int unpk_(signed char *message, char *hashtab, char *call_loc_pow, char *call, c
strncat(grid6, callsign + 5, 1);
strncat(grid6, callsign, 5);
int nu = ndbm % 10;
if ((nu == 0 || nu == 3 || nu == 7 || nu == 10) &&
if ((nu == 0 || nu == 3 || nu == 7) &&
(isalpha(grid6[0]) && isalpha(grid6[1]) && isdigit(grid6[2]) && isdigit(grid6[3]))) {
// not testing 4'th and 5'th chars because of this case: <PA0SKT/2> JO33 40
// grid is only 4 chars even though this is a hashed callsign...