static int channelscan_find_lock(struct hdhomerun_channelscan_t *scan, uint32_t frequency, struct hdhomerun_channelscan_result_t *result)
{
/* Set channel. */
char channel_str[64];
hdhomerun_sprintf(channel_str, channel_str + sizeof(channel_str), "auto:%u", (unsigned int)frequency);
int ret = hdhomerun_device_set_tuner_channel(scan->hd, channel_str);
if (ret <= 0) {
return ret;
}
/* Wait for lock. */
ret = hdhomerun_device_wait_for_lock(scan->hd, &result->status);
if (ret <= 0) {
return ret;
}
if (!result->status.lock_supported) {
return 1;
}
/* Wait for symbol quality = 100%. */
uint64_t timeout = getcurrenttime() + 5000;
while (1) {
ret = hdhomerun_device_get_tuner_status(scan->hd, NULL, &result->status);
if (ret <= 0) {
return ret;
}
if (result->status.symbol_error_quality == 100) {
return 1;
}
if (getcurrenttime() >= timeout) {
return 1;
}
msleep_approx(250);
}
}
// 0 = no lock, 1 = lock, -1 on error
int HDHRDevice::getTuningStatus(bool& locked, int& strength)
{
int result = 0;
locked = false; // signal locked
strength = 0;
if(mDeviceConnection) {
struct hdhomerun_tuner_status_t status;
char *statusString;
if(hdhomerun_device_get_tuner_status(mDeviceConnection, &statusString, &status) < 0) {
flog( "Native.log", "HDHRDevice::getSignalStrength: Error reading tuner status: %s\r\n", (statusString != NULL) ? statusString : "(null)");
return -1;
}
// signal_present seems to be inaccurate, use the lock_str value to determine lock
if(strcmp(status.lock_str, "none") && strcmp(status.lock_str, "(ntsc)")) {
locked = true; // if anything besides none, then we're locked
result = 1;
strength = (int)status.signal_strength;
}
if ( 0 )
flog( "Native.log", "HDHRDevice::getSignalStrength channel:%s lock_str:%s signal_present:%s strength:%d snr:%d seq:%d raw_bps:%ld pps:%ld (%s, %d, %d)\r\n",
status.channel, status.lock_str,
(status.signal_present ? "true" : "false"),
status.signal_strength, status.signal_to_noise_quality, status.symbol_error_quality,
(long)status.raw_bits_per_second, (long)status.packets_per_second,
locked ? "LOCK" : "NOLOCK",
strength,
result
);
} else return -1;
return result;
}
void HDHRStreamHandler::GetTunerStatus(struct hdhomerun_tuner_status_t *status)
{
hdhomerun_device_get_tuner_status(_hdhomerun_device, NULL, status);
}
