DAB/DAB+
Contents
DAB/DAB+
The DAB/DAB+ USB Stick decodes DAB/DAB+ onchip and transfers the decoded audio data fully digital to the host system. Currently Linux and MacOS are supported.
Installation Linux
open a terminal and enter following commands:
sudo -s wget http://sundtek.de/media/sundtek_netinst.sh chmod 777 sundtek_netinst.sh ./sundtek_netinst.sh
In case you want to distribute the local stations digitally you can also install our streaming server (again on the commandline)
just run following commands: sudo -s /opt/bin/mediaclient --installstreamer
Installation MacOSX
MacOSX:
- https://www.sundtek.de/media/sundtek_driver_macosx_190727.1744.dmg - https://www.sundtek.de/media/dablet_v0.1.dmg
First install the driver, afterwards dablet_v0.1.dmg
Installation Raspberry PI
In case you don't want to use our radio application, the installation is the same as on a regular linux system
sudo -s wget http://sundtek.de/media/sundtek_netinst.sh chmod 777 sundtek_netinst.sh ./sundtek_netinst.sh
Radio Application:
cd $HOME sudo apt-get install qt5-default wget http://sundtek.de/media/dablet_raspbian.tar.gz tar xf dablet_raspbian.tar.gz ./dablet
DAB/DAB+ commandline interface
scan for transponders:
/opt/bin/mediaclient --scandabfrequencies /dev/dab0 scanning: 5A / 174928000 scanning: 5B / 176640000 scanning: 5C / 178352000 [LOCKED] scanning: 5D / 180064000 scanning: 6A / 181936000 scanning: 6B / 183648000 scanning: 6C / 185360000 scanning: 6D / 187072000 scanning: 7A / 188928000 scanning: 7B / 190640000 [LOCKED] scanning: 7C / 192352000 scanning: 7D / 194064000 [LOCKED] scanning: 8A / 195936000
tune to a transponder:
/opt/bin/mediaclient -m DAB -f 194064000 Using device: /dev/dab0 Tuning: 194064000 [LOCKED]
turn on direct audio playback in the driver (the driver will try to play back audio via alsa, pulseaudio or oss:
/opt/bin/mediaclient -m DAB -g off
scan a dab transponder:
/opt/bin/mediaclient --scandabservices /dev/dab0 Service Name, Service ID, Component ID BR-Klassik 0xd314 0xb Inforadio 0xd335 0x8 FH Europa 0xd496 0x3 radioeins 0xd332 0x1 radioBERLIN 88 8 0xd321 0x6 kulturradio 0xd323 0x5 Fritz 0xd333 0x7 Antenne 0xd431 0x0 SWR3 0xd3a3 0x4 Bayern 2 0xd412 0xc WDR2 0xd392 0x2 MDR JUMP 0xd3c2 0xd rbb TPEG 0xe0d11019 0xc00a rbb EPG 0xe0d01019 0xc009
Tune to a specific DAB station:
/opt/bin/mediaclient -m DAB -f 194064000 --sid 0xd321 Using device: /dev/dab0 Tuning: 194064000, 0xd321 [LOCKED]
Read signal statistics:
/opt/bin/mediaclient --readsignal=0 -d /dev/dab0 FREQUENCY: 178352000 LOCKED: YES RSSI: 172 SNR: 10 FIC_QUALITY: 100 CNR: 14 FREQUENCY: 178352000 LOCKED: YES RSSI: 173 SNR: 10 FIC_QUALITY: 100 CNR: 13 FREQUENCY: 178352000 LOCKED: YES RSSI: 172 SNR: 10 FIC_QUALITY: 100 CNR: 12 FREQUENCY: 178352000 LOCKED: YES RSSI: 173 SNR: 10 FIC_QUALITY: 100 CNR: 13 FREQUENCY: 178352000 LOCKED: YES RSSI: 173 SNR: 10 FIC_QUALITY: 100 CNR: 13 FREQUENCY: 178352000 LOCKED: YES RSSI: 173 SNR: 9 FIC_QUALITY: 100 CNR: 12 FREQUENCY: 178352000 LOCKED: YES RSSI: 173 SNR: 9 FIC_QUALITY: 100 CNR: 12
C API
Scan for DAB Frequencies
example:
int media_scan_dabfrequencies(char *device, int devfd, int console, int running) {
int fd;
int rv;
int nlen;
char tmp[30];
if (devfd>=0)
fd = devfd;
else
fd = net_open(device, O_RDWR);
if (fd>=0) {
struct dab_frequency dabf;
struct dab_tuner dabt;
int i;
int e;
int current_scan_index=-1;
struct dab_scan_setup setup;
struct dab_scan_parameters parameters;
memset(¶meters, 0x0, sizeof(struct dab_scan_parameters));
memset(&setup, 0x0, sizeof(struct dab_scan_setup));
net_ioctl(fd, DAB_SCAN_SETUP, &setup);
do {
net_ioctl(fd, DAB_SCAN_NEXT_FREQUENCY, ¶meters);
if (current_scan_index != parameters.scan_index) {
if (console>=0) {
sprintf(tmp, "%s %d\n", dab_frequency_list[parameters.scan_index].channel, dab_frequency_list[parameters.scan_index].freq*1000);
rv=write(console, tmp, nlen);
} else {
fprintf(stdout, "%s %d\n", dab_frequency_list[parameters.scan_index].channel, dab_frequency_list[parameters.scan_index].freq*1000);
fflush(stdout);
}
}
switch(parameters.status) {
case DAB_SCAN_LOCKED:
{
if (console>=0) {
rv=write(console, "[LOCKED]\n", 9);
} else {
fprintf(stdout, "[LOCKED]\n");
}
break;
}
case DAB_SCAN_SEARCHING:
usleep(10000);
break;
case DAB_SCAN_COMPLETE:
{
if (console>=0) {
rv=write(console, "[FINISHED]\n", 11);
} else {
fprintf(stdout, "\nScan completed\n");
}
break;
}
}
current_scan_index = parameters.scan_index;
if (console>=0 && running == 0)
break;
} while (parameters.status != DAB_SCAN_COMPLETE);
if (devfd == -1)
net_close(fd);
}
return 0;
}
Scan for DAB Services
int media_scan_dabservices(char *device) {
int fd;
int rv;
int i=0;
fd = net_open(device, O_RDWR);
if (fd>=0) {
struct dab_service service;
printf("Service Name, Service ID, Component ID\n");
while(1) {
service.id=i++;
rv = net_ioctl(fd, DAB_GET_SERVICE, &service);
if (rv == -1)
break;
printf("%16s\t0x%x\t0x%x\n", service.service_name, service.sid, service.comp[0]);
}
net_close(fd);
}
return 0;
}
DAB Get Date
int media_dab_get_date(char *device) {
int fd;
struct dab_time t;
printf("opening device: %s\n", device);
fd = net_open(device, O_RDWR);
memset(&t, 0x0, sizeof(struct dab_time));
if (fd>=0) {
printf("GET DAB TIME:\n");
net_ioctl(fd, DAB_GET_TIME, &t);
printf("%d-%d-%d %d:%d:%d\n", t.year, t.months, t.days, t.hours, t.minutes, t.seconds);
net_close(fd);
}
return 0;
}
Dab get Ensemble Info
int media_dab_get_ensemble_info(char *device) {
int fd;
struct dab_ensemble_info info;
printf("opening device: %s\n", device);
fd = net_open(device, O_RDWR);
if (fd>=0) {
printf("GET ENSEMBLE INFO:\n");
net_ioctl(fd, DAB_GET_ENSEMBLE_INFO, &info);
printf("Ensemble Label: %s\n", info.label);
net_close(fd);
}
return 0;
}
Mute
int set_mute(int fd, char *arg) {
int type = 0;
struct v4l2_control control;
if (strcmp(arg, "off") == 0) {
control.id = V4L2_CID_AUDIO_MUTE;
control.value = 0;
fprintf(stdout, "Enabling audiostream\n");
net_ioctl(fd, VIDIOC_S_CTRL, &control);
} else if (strcmp(arg, "on") == 0) {
fprintf(stdout, "Disabling audiostream\n");
control.id = V4L2_CID_AUDIO_MUTE;
control.value = 1;
net_ioctl(fd, VIDIOC_S_CTRL, &control);
} else
fprintf(stdout, "Wrong argument [%s] choose between on|off\n", arg);
return 0;
}
etc.
There are a few more features, in case you need more details just contact us.
