static int cdx2834_init(struct dvb_frontend *fe)
{
struct cdx2834_state *state = fe->demodulator_priv;
demod_init(state);
msleep(200);
return 0;
}
int tune_single_tuner_and_demod_channel(struct dibTuner *tuner, struct dibDemod *demod, struct dibChannel *ch)
{
int time, ret;
if (demod_init(demod) != 0) {
DibDbgPrint("-E- Demod init failed\n");
return 1;
}
if (tuner_init(tuner) != 0) {
DibDbgPrint("-E- Tuner init failed\n");
return 1;
}
if (tuner_set_bandwidth_ex(tuner, ch) != 0) {
DibDbgPrint("-E- Tuner set_bandwidth failed\n");
return 1;
}
if (tuner_tune(tuner, ch) != 0) {
DibDbgPrint("-E- Tuner tune_digital failed\n");
return 1;
}
/* prepare the agc startup loop */
demod_agc_restart(demod);
do {
time = -1;
ret = demod_agc_startup_ex(demod, ch);
if (ret > time)
time = ret;
if (time != -1)
DibMSleep(time);
} while (time != -1);
if ((ch->type == STANDARD_DVBT && (ch->u.dvbt.nfft == FFT_AUTO || ch->u.dvbt.guard == GUARD_INTERVAL_AUTO || ch->u.dvbt.constellation == QAM_AUTO ||
ch->u.dvbt.intlv_native == INTLV_NATIVE_AUTO || ch->u.dvbt.hrch == VIT_HRCH_AUTO || ch->u.dvbt.select_hp == VIT_PRIORITY_AUTO ||
ch->u.dvbt.alpha == VIT_ALPHA_AUTO || ch->u.dvbt.code_rate_hp == VIT_CODERATE_AUTO ||
((ch->u.dvbt.hrch == VIT_HRCH_ON && ch->u.dvbt.code_rate_lp == VIT_CODERATE_AUTO)))) ||
((ch->type == STANDARD_ISDBT) && (ch->u.isdbt.nfft == FFT_AUTO || ch->u.isdbt.guard == GUARD_INTERVAL_AUTO)))
if (single_do_autosearch(demod, ch) != 0) {
DibDbgPrint("-W- autosearching parameters failed.\n");
return 1;
}
dump_dvb_channel_params(ch);
if (demod_tune_ex(demod,ch) != 0){
DibDbgPrint("-W- tuning failed for demod - this is just a warning could be normal in diversity.\n");
return 1;
}
return 0;
}
static int gx1001_init(struct dvb_frontend *fe)
{
struct gx1001_state *state = fe->demodulator_priv;
//GX_Init_Chip();
pr_dbg("=========================demod init\r\n");
demod_init(state);
msleep(200);
return 0;
}
int main(int argc, char **argv)
{
struct sigaction sigact;
char *filename = NULL;
int r, opt;
int i, gain = AUTO_GAIN; /* tenths of a dB */
int dev_index = 0;
int dev_given = 0;
int ppm_error = 0;
int custom_ppm = 0;
int left_freq = 161975000;
int right_freq = 162025000;
int sample_rate = 12000;
int output_rate = 48000;
int dongle_freq, dongle_rate, delta;
int edge = 0;
pthread_cond_init(&ready, NULL);
pthread_mutex_init(&ready_m, NULL);
while ((opt = getopt(argc, argv, "l:r:s:o:EODd:g:p:h")) != -1)
{
switch (opt) {
case 'l':
left_freq = (int)atofs(optarg);
break;
case 'r':
right_freq = (int)atofs(optarg);
break;
case 's':
sample_rate = (int)atofs(optarg);
break;
case 'o':
output_rate = (int)atofs(optarg);
break;
case 'E':
edge = !edge;
break;
case 'D':
dc_filter = !dc_filter;
break;
case 'O':
oversample = !oversample;
break;
case 'd':
dev_index = verbose_device_search(optarg);
dev_given = 1;
break;
case 'g':
gain = (int)(atof(optarg) * 10);
break;
case 'p':
ppm_error = atoi(optarg);
custom_ppm = 1;
break;
case 'h':
default:
usage();
return 2;
}
}
if (argc <= optind) {
filename = "-";
} else {
filename = argv[optind];
}
if (left_freq > right_freq) {
usage();
return 2;
}
/* precompute rates */
dongle_freq = left_freq/2 + right_freq/2;
if (edge) {
dongle_freq -= sample_rate/2;}
delta = right_freq - left_freq;
if (delta > 1.2e6) {
fprintf(stderr, "Frequencies may be at most 1.2MHz apart.");
exit(1);
}
if (delta < 0) {
fprintf(stderr, "Left channel must be lower than right channel.");
exit(1);
}
i = (int)log2(2.4e6 / delta);
dongle_rate = delta * (1<<i);
both.rate_in = dongle_rate;
both.rate_out = delta * 2;
i = (int)log2(both.rate_in/both.rate_out);
both.downsample_passes = i;
both.downsample = 1 << i;
left.rate_in = both.rate_out;
i = (int)log2(left.rate_in / sample_rate);
left.downsample_passes = i;
left.downsample = 1 << i;
left.rate_out = left.rate_in / left.downsample;
right.rate_in = left.rate_in;
right.rate_out = left.rate_out;
right.downsample = left.downsample;
right.downsample_passes = left.downsample_passes;
if (left.rate_out > output_rate) {
fprintf(stderr, "Channel bandwidth too high or output bandwidth too low.");
exit(1);
}
stereo.rate = output_rate;
if (edge) {
fprintf(stderr, "Edge tuning enabled.\n");
} else {
fprintf(stderr, "Edge tuning disabled.\n");
}
if (dc_filter) {
fprintf(stderr, "DC filter enabled.\n");
} else {
fprintf(stderr, "DC filter disabled.\n");
}
fprintf(stderr, "Buffer size: %0.2f mS\n", 1000 * (double)DEFAULT_BUF_LENGTH / (double)dongle_rate);
fprintf(stderr, "Downsample factor: %i\n", both.downsample * left.downsample);
fprintf(stderr, "Low pass: %i Hz\n", left.rate_out);
fprintf(stderr, "Output: %i Hz\n", output_rate);
/* precompute lengths */
both.len_in = DEFAULT_BUF_LENGTH;
both.len_out = both.len_in / both.downsample;
left.len_in = both.len_out;
right.len_in = both.len_out;
left.len_out = left.len_in / left.downsample;
right.len_out = right.len_in / right.downsample;
left_demod.buf_len = left.len_out;
left_demod.result_len = left_demod.buf_len / 2;
right_demod.buf_len = left_demod.buf_len;
right_demod.result_len = left_demod.result_len;
stereo.bl_len = (int)((long)(DEFAULT_BUF_LENGTH/2) * (long)output_rate / (long)dongle_rate);
stereo.br_len = stereo.bl_len;
stereo.result_len = stereo.br_len * 2;
stereo.rate = output_rate;
if (!dev_given) {
dev_index = verbose_device_search("0");
}
if (dev_index < 0) {
exit(1);
}
downsample_init(&both);
downsample_init(&left);
downsample_init(&right);
demod_init(&left_demod);
demod_init(&right_demod);
stereo_init(&stereo);
r = rtlsdr_open(&dev, (uint32_t)dev_index);
if (r < 0) {
fprintf(stderr, "Failed to open rtlsdr device #%d.\n", dev_index);
exit(1);
}
sigact.sa_handler = sighandler;
sigemptyset(&sigact.sa_mask);
sigact.sa_flags = 0;
sigaction(SIGINT, &sigact, NULL);
sigaction(SIGTERM, &sigact, NULL);
sigaction(SIGQUIT, &sigact, NULL);
sigaction(SIGPIPE, &sigact, NULL);
if (strcmp(filename, "-") == 0) { /* Write samples to stdout */
file = stdout;
setvbuf(stdout, NULL, _IONBF, 0);
} else {
file = fopen(filename, "wb");
if (!file) {
fprintf(stderr, "Failed to open %s\n", filename);
exit(1);
}
}
/* Set the tuner gain */
if (gain == AUTO_GAIN) {
verbose_auto_gain(dev);
} else {
gain = nearest_gain(dev, gain);
verbose_gain_set(dev, gain);
}
if (!custom_ppm) {
verbose_ppm_eeprom(dev, &ppm_error);
}
verbose_ppm_set(dev, ppm_error);
//r = rtlsdr_set_agc_mode(dev, 1);
/* Set the tuner frequency */
verbose_set_frequency(dev, dongle_freq);
/* Set the sample rate */
verbose_set_sample_rate(dev, dongle_rate);
/* Reset endpoint before we start reading from it (mandatory) */
verbose_reset_buffer(dev);
pthread_create(&demod_thread, NULL, demod_thread_fn, (void *)(NULL));
rtlsdr_read_async(dev, rtlsdr_callback, (void *)(NULL),
DEFAULT_ASYNC_BUF_NUMBER,
DEFAULT_BUF_LENGTH);
if (do_exit) {
fprintf(stderr, "\nUser cancel, exiting...\n");}
else {
fprintf(stderr, "\nLibrary error %d, exiting...\n", r);}
rtlsdr_cancel_async(dev);
safe_cond_signal(&ready, &ready_m);
pthread_cond_destroy(&ready);
pthread_mutex_destroy(&ready_m);
if (file != stdout) {
fclose(file);}
rtlsdr_close(dev);
return r >= 0 ? r : -r;
}
/* tune (do autosearch in case of unknown parameters) */
void tune_diversity_tuner_and_demod_channel(struct dibTuner *tuner[], struct dibDemod *demod[], int num, struct dibChannel *ch)
{
int i, time, ret;
for (i = 0; i < num; i++) {
if (demod_init(demod[i]) != 0) {
DibDbgPrint("-E- Tuner init failed\n");
return;
}
if (tuner_init(tuner[i]) != 0) {
DibDbgPrint("-E- Tuner init failed\n");
return;
}
}
for (i = 0; i < num; i++) {
if (tuner_set_bandwidth_ex(tuner[i], ch) != 0) {
DibDbgPrint("-E- Tuner set_bandwidth failed\n");
return;
}
if (tuner_tune(tuner[i], ch) != 0) {
DibDbgPrint("-E- Tuner tune_digital failed\n");
return;
}
/* prepare the agc startup loop */
demod_agc_restart(demod[i]);
}
do {
time = -1;
for (i = 0; i < num; i++) {
ret = demod_agc_startup_ex(demod[i], ch);
if (ret > time)
time = ret;
}
if (time != -1)
DibMSleep(time);
} while (time != -1);
if ((ch->type == STANDARD_DVBT && (ch->u.dvbt.nfft == FFT_AUTO || ch->u.dvbt.guard == GUARD_INTERVAL_AUTO || ch->u.dvbt.constellation == QAM_AUTO ||
ch->u.dvbt.intlv_native == INTLV_NATIVE_AUTO || ch->u.dvbt.hrch == VIT_HRCH_AUTO || ch->u.dvbt.select_hp == VIT_PRIORITY_AUTO ||
ch->u.dvbt.alpha == VIT_ALPHA_AUTO || ch->u.dvbt.code_rate_hp == VIT_CODERATE_AUTO ||
((ch->u.dvbt.hrch == VIT_HRCH_ON && ch->u.dvbt.code_rate_lp == VIT_CODERATE_AUTO)))))
if (do_autosearch(demod, num, ch) != 0) {
DibDbgPrint("-W- autosearching parameters failed.\n");
return;
}
dump_dvb_channel_params(ch);
for (i = 0; i < num; i++) {
if (demod_tune_ex(demod[i],ch) != 0)
DibDbgPrint("-W- tuning failed for demod - this is just a warning could be normal in diversity.\n");
}
for (i = 0; i < num; i++) {
if (i == num-1) { // last demod in a diversity chain - turn off div-in combination
DibDbgPrint("-D- setting diversity in off for demod %d\n",i);
demod_set_diversity_in(demod[i], 0);
} else {
DibDbgPrint("-D- setting diversity in on for demod %d\n",i);
demod_set_diversity_in(demod[i], 1);
}
if (i == 0) { // first demod in a diversity chain - no diversity output
DibDbgPrint("-D- setting normal output for demod %d\n",i);
demod_set_output_mode(demod[i], OUTMODE_MPEG2_PAR_GATED_CLK);
} else {
DibDbgPrint("-D- setting diversity out on for demod %d\n",i);
demod_set_output_mode(demod[i], OUTMODE_DIVERSITY);
}
}
return;
}
uint16_t frontend_get_isdbt_sb_channels(struct dibFrontend *fe[], uint32_t freq , uint32_t bw, int num, struct dibChannel ch[])
{
uint16_t seg_bw_khz = 429;
int16_t rf_offset_khz = 0;
uint16_t total_segment_number = (uint16_t)((bw / seg_bw_khz) - 1); // 1 is the freq guard
int segment_index = 0, channel_index = 0, subch_id = -1;
int i;
dbgpl(NULL, "will search SB on %d potential segment(s) inside a bandwidth of %dkhz arround FR freq %dkhz", total_segment_number, bw, freq);
for (i = 0; i < num; i++) {
if (demod_init(fe[i]) != 0) {
DibDbgPrint("-E- Tuner init failed\n");
return 0;
}
if (tuner_init(fe[i]) != 0) {
DibDbgPrint("-E- Tuner init failed\n");
return 0;
}
}
for (segment_index = 1; segment_index <= total_segment_number; segment_index++) {
int success, fe_fail_count;
channel_init(&ch[channel_index], STANDARD_ISDBT);
/* compute segment center freq */
rf_offset_khz = seg_bw_khz * (segment_index - (total_segment_number/2) - (total_segment_number%2));
dbgpl(NULL,"rf_offset_khz = %d",rf_offset_khz);
/* add a half of seg BW offset is total number of connected seg is even */
if((total_segment_number%2) == 0) {
dbgpl(NULL,"compensate for 1/2 seg (%d khz) tune freq because sb_conn_total_seg is even = %d",seg_bw_khz, total_segment_number);
rf_offset_khz-=(seg_bw_khz/2);
}
dbgpl(NULL,"rf_offset_khz = %d",rf_offset_khz);
ch[channel_index].RF_kHz = freq + rf_offset_khz;
ch[channel_index].bandwidth_kHz = bw;
ch[channel_index].u.isdbt.sb_mode = 1;
if (subch_id != -1)
subch_id += 3;
ch[channel_index].u.isdbt.sb_subchannel = subch_id;
dbgpl(NULL,"---------------------- Start search on segment #%d center freq = %dkhz (%d+%d, %d)--------------------- ",
segment_index,ch[channel_index].RF_kHz, freq, rf_offset_khz, subch_id);
for (i = 0; i < num; i++)
frontend_tune_restart(fe[i], FE_RESTART_TUNE_PROCESS_FROM_TUNER, &ch[channel_index]);
do {
success = 0;
fe_fail_count = 0;
for (i = 0; i < num; i++) {
frontend_tune(fe[i], &ch[channel_index]);
if (fe[i]->status_has_changed && (frontend_get_status(fe[i]) == FE_STATUS_DEMOD_SUCCESS || frontend_get_status(fe[i]) == FE_STATUS_FFT_SUCCESS)) {
//dbgpl(&adapter_dbg, "Autosearch succeeded on FE %d", fe[i]->id);
frontend_get_channel(fe[i], &ch[channel_index]); /* we read the channel parameters from the frontend which was successful */
if (ch[channel_index].u.isdbt.partial_reception == 1) {
ch[channel_index].bandwidth_kHz = seg_bw_khz * 3; /* bandwidth is for 3 segments */
segment_index++; /* no need to check the next segment */
} else
ch[channel_index].bandwidth_kHz = seg_bw_khz;
#ifdef DIBCOM_EXTENDED_MONITORING
dump_digital_channel_params(&ch[channel_index]);
#endif
}
if (frontend_get_status(fe[i]) == FE_STATUS_LOCKED) {
subch_id = ch[channel_index].u.isdbt.sb_subchannel;
channel_index++;
success = 1;
break;
} else if(frontend_get_status(fe[i]) == FE_STATUS_TUNE_FAILED) {
fe_fail_count++;
}
}
} while (!success && fe_fail_count != num);
if (success)
DibDbgPrint("-I- Autosearch succeeded for demod %d channel_index = %d - done.\n",i, channel_index);
else
DibDbgPrint("-I- Autosearch failled for demod %d channel_index = %d - done. %d/%d\n",i, channel_index, fe_fail_count, num);
}
return channel_index;
}
int start_the_radio(int device_index, long freq_hz, long output_SR, int gain_db10) {
// post("inside start_the_radio()" );
// int err = 0; // tz for usage call
int r;
int dev_given = 0; // gets set on, if user passes in device index arg (-d)
// int custom_ppm = 0; // gets set on, if users specifies freq correction arg (-p)
char device_index_str[10] = "0";
// initialization
dongle_init(&dongle);
demod_init(&demod);
output_init(&output);
controller_init(&controller);
buffer_init(); // tz reset index pointers
// handle device index
if(device_index != 0) {
sprintf(device_index_str,"%d", device_index);
dongle.dev_index = verbose_device_search(device_index_str);
dev_given = 1;
}
// set gain
// tz - note that when passing this param from Max/Pd it gets passed in
// db * 10 format - so we don't need extra multiplier
// this is done to allow setting to AUTOGAIN
//
dongle.gain = gain_db10 ;
// set sample rate
demod.rate_in = (uint32_t) output_SR;
demod.rate_out = (uint32_t) output_SR;
// set frequency
controller.freqs[controller.freq_len] = (uint32_t) freq_hz;
controller.freq_len++;
// note: here is how dongle ppm error correction was set in rtl_fm
// dongle.ppm_error = atoi(optarg);
// custom_ppm = 1;
// do initial setup
// tz this was for resampling and can be removed
output.rate = demod.rate_out;
// tz this can get cleaned up too...
// set buffer length - would need to increase if downsample rate increased
//
ACTUAL_BUF_LENGTH = DEFAULT_BUF_LENGTH;
// if user specied a device number, use it - otherwise default to 0
if (!dev_given) {
dongle.dev_index = verbose_device_search("0");
}
if (dongle.dev_index < 0) {
return(1);
}
// open device
r = rtlsdr_open(&dongle.dev, (uint32_t)dongle.dev_index);
if (r < 0) {
// sprintf(errmesg, "Failed to open rtlsdr device #%d.\n", dongle.dev_index);
sprintf(errmesg, "Failed to open rtlsdr device #%d.\n", dongle.dev_index);
post(errmesg, 0);
return(1);
}
set_tuner_gain(&dongle);
// do freq error correction
verbose_ppm_set(dongle.dev, dongle.ppm_error);
//r = rtlsdr_set_testmode(dongle.dev, 1);
/* Reset endpoint before we start reading from it (mandatory) */
verbose_reset_buffer(dongle.dev);
// tz these threads all get running in parallel here
//
int errx; // for debugging - not really used now
errx = pthread_create(&controller.thread, NULL, controller_thread_fn, (void *)(&controller));
usleep(100000);
errx = pthread_create(&dongle.thread, NULL, dongle_thread_fn, (void *)(&dongle));
radio_running = 1;
return(0);
}
