static void *demod_thread_fn(void *arg)
{
struct dab_state_t *dab = arg;
struct sdr_state_t *sdr = dab->device_state;
int i,j;
while (!do_exit) {
sem_wait(&data_ready);
int ok = sdr_demod(&dab->tfs[dab->tfidx], sdr);
if (ok) {
dab_process_frame(dab);
}
//dab_fic_parser(dab->fib,&sinfo,&ana);
// calculate error rates
//dab_analyzer_calculate_error_rates(&ana,dab);
int prev_freq = sdr->frequency;
if (abs(sdr->coarse_freq_shift)>1) {
if (sdr->coarse_freq_shift<0)
sdr->frequency = sdr->frequency -1000;
else
sdr->frequency = sdr->frequency +1000;
rtlsdr_set_center_freq(dev,sdr->frequency);
}
if (abs(sdr->coarse_freq_shift) ==1) {
if (sdr->coarse_freq_shift<0)
sdr->frequency = sdr->frequency -rand() % 1000;
else
sdr->frequency = sdr->frequency +rand() % 1000;
rtlsdr_set_center_freq(dev,sdr->frequency);
//fprintf(stderr,"new center freq : %i\n",rtlsdr_get_center_freq(dev));
}
if (abs(sdr->coarse_freq_shift)<1 && (abs(sdr->fine_freq_shift) > 50)) {
sdr->frequency = sdr->frequency + (sdr->fine_freq_shift/3);
rtlsdr_set_center_freq(dev,sdr->frequency);
//fprintf(stderr,"ffs : %f\n",sdr->fine_freq_shift);
}
//if (sdr->frequency != prev_freq) {
// fprintf(stderr,"Adjusting centre-frequency to %dHz\n",sdr->frequency);
//}
ccount += 1;
if (ccount == 10) {
ccount = 0;
//print_status(dab);
}
}
return 0;
}
void *dab2eti::demod_thread_fn(void *arg)
{
struct dab_state_t *dab = (dab_state_t *)arg;
struct sdr_state_t *sdr = (sdr_state_t *)dab->device_state;
while (!do_exit) {
sem_wait(&data_ready);
int ok = sdr_demod(&dab->tfs[dab->tfidx], sdr);
if (ok) {
dab_process_frame(dab);
}
//dab_fic_parser(dab->fib,&sinfo,&ana);
// calculate error rates
//dab_analyzer_calculate_error_rates(&ana,dab);
// if the user changed the frequency
if(new_frequency){
sdr->frequency = frequency;
new_frequency = false;
}
// if the user changed the gain
if(new_gain){
int r;
if (gain == AUTO_GAIN) {
r = rtlsdr_set_tuner_gain_mode(dev, 0);
} else {
r = rtlsdr_set_tuner_gain_mode(dev, 1);
r = rtlsdr_set_tuner_gain(dev, gain);
}
if (r != 0) {
fprintf(stderr, "WARNING: Failed to set tuner gain.\n");
} else if (gain == AUTO_GAIN) {
fprintf(stderr, "Tuner gain set to automatic.\n");
} else {
fprintf(stderr, "Tuner gain set to %0.2f dB.\n", gain/10.0);
}
new_gain = false;
}
// automatic fine tuning
if (abs(sdr->coarse_freq_shift)>1) {
if (sdr->coarse_freq_shift<0)
sdr->frequency = sdr->frequency -1000;
else
sdr->frequency = sdr->frequency +1000;
rtlsdr_set_center_freq(dev,sdr->frequency);
}
if (abs(sdr->coarse_freq_shift) ==1) {
if (sdr->coarse_freq_shift<0)
sdr->frequency = sdr->frequency -rand() % 1000;
else
sdr->frequency = sdr->frequency +rand() % 1000;
rtlsdr_set_center_freq(dev,sdr->frequency);
//fprintf(stderr,"new center freq : %i\n",rtlsdr_get_center_freq(dev));
}
if (abs(sdr->coarse_freq_shift)<1 && (abs(sdr->fine_freq_shift) > 50)) {
sdr->frequency = sdr->frequency + (sdr->fine_freq_shift/3);
rtlsdr_set_center_freq(dev,sdr->frequency);
//fprintf(stderr,"ffs : %f\n",sdr->fine_freq_shift);
}
//if (sdr->frequency != prev_freq) {
// fprintf(stderr,"Adjusting centre-frequency to %dHz\n",sdr->frequency);
//}
ccount += 1;
if (ccount == 10) {
ccount = 0;
//print_status(dab);
}
}
return 0;
}