void DVBChannel::CheckOptions(DTVMultiplex &tuning) const
{
if ((tuning.inversion == DTVInversion::kInversionAuto) &&
!(capabilities & FE_CAN_INVERSION_AUTO))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"'Auto' inversion parameter unsupported by this driver, "
"falling back to 'off'.");
tuning.inversion = DTVInversion::kInversionOff;
}
// DVB-S needs a fully initialized diseqc tree and is checked later in Tune
if (!diseqc_tree)
CheckFrequency(tuning.frequency);
if (tunerType.IsFECVariable() &&
symbol_rate_minimum && symbol_rate_maximum &&
(symbol_rate_minimum <= symbol_rate_maximum) &&
(tuning.symbolrate < symbol_rate_minimum ||
tuning.symbolrate > symbol_rate_maximum))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
QString("Symbol Rate setting (%1) is out of range (min/max:%2/%3)")
.arg(tuning.symbolrate)
.arg(symbol_rate_minimum).arg(symbol_rate_maximum));
}
if (tunerType.IsFECVariable() && !CheckCodeRate(tuning.fec))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Selected fec_inner parameter unsupported by this driver.");
}
if (tunerType.IsModulationVariable() && !CheckModulation(tuning.modulation))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Selected modulation parameter unsupported by this driver.");
}
if (DTVTunerType::kTunerTypeDVBT != tunerType)
{
LOG(VB_CHANNEL, LOG_INFO, LOC + tuning.toString());
return;
}
// Check OFDM Tuning params
if (!CheckCodeRate(tuning.hp_code_rate))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Selected code_rate_hp parameter unsupported by this driver.");
}
if (!CheckCodeRate(tuning.lp_code_rate))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Selected code_rate_lp parameter unsupported by this driver.");
}
if ((tuning.bandwidth == DTVBandwidth::kBandwidthAuto) &&
!(capabilities & FE_CAN_BANDWIDTH_AUTO))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"'Auto' bandwidth parameter unsupported by this driver.");
}
if ((tuning.trans_mode == DTVTransmitMode::kTransmissionModeAuto) &&
!(capabilities & FE_CAN_TRANSMISSION_MODE_AUTO))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"'Auto' transmission_mode parameter unsupported by this driver.");
}
if ((tuning.guard_interval == DTVGuardInterval::kGuardIntervalAuto) &&
!(capabilities & FE_CAN_GUARD_INTERVAL_AUTO))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"'Auto' guard_interval parameter unsupported by this driver.");
}
if ((tuning.hierarchy == DTVHierarchy::kHierarchyAuto) &&
!(capabilities & FE_CAN_HIERARCHY_AUTO))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"'Auto' hierarchy parameter unsupported by this driver. ");
}
if (!CheckModulation(tuning.modulation))
{
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Selected modulation parameter unsupported by this driver.");
}
LOG(VB_CHANNEL, LOG_INFO, LOC + tuning.toString());
}
/**
* \brief Tunes the card to a frequency but does not deal with PIDs.
*
* This is used by DVB Channel Scanner, the EIT Parser, and by TVRec.
*
* \param tuning Info on transport to tune to
* \param inputid Optional, forces specific input (for DiSEqC)
* \param force_reset If true, frequency tuning is done
* even if it should not be needed.
* \param same_input Optional, doesn't change input (for retuning).
* \return true on success, false on failure
*/
bool DVBChannel::Tune(const DTVMultiplex &tuning,
uint inputid,
bool force_reset,
bool same_input)
{
QMutexLocker lock(&tune_lock);
QMutexLocker locker(&hw_lock);
DVBChannel *master = GetMasterLock();
if (master != this)
{
LOG(VB_CHANNEL, LOG_INFO, LOC + "tuning on slave channel");
SetSIStandard(tuning.sistandard);
bool ok = master->Tune(tuning, inputid, force_reset, false);
ReturnMasterLock(master);
return ok;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
int intermediate_freq = 0;
bool can_fec_auto = false;
bool reset = (force_reset || first_tune);
if (tunerType.IsDiSEqCSupported() && !diseqc_tree)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"DVB-S needs device tree for LNB handling");
return false;
}
desired_tuning = tuning;
if (fd_frontend < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Tune(): Card not open!");
return false;
}
// Remove any events in queue before tuning.
drain_dvb_events(fd_frontend);
// send DVB-S setup
if (diseqc_tree)
{
// configure for new input
if (!same_input)
diseqc_settings.Load(inputid);
// execute diseqc commands
if (!diseqc_tree->Execute(diseqc_settings, tuning))
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Tune(): Failed to setup DiSEqC devices");
return false;
}
// retrieve actual intermediate frequency
DiSEqCDevLNB *lnb = diseqc_tree->FindLNB(diseqc_settings);
if (!lnb)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Tune(): No LNB for this configuration");
return false;
}
if (lnb->GetDeviceID() != last_lnb_dev_id)
{
last_lnb_dev_id = lnb->GetDeviceID();
// make sure we tune to frequency, if the lnb has changed
reset = first_tune = true;
}
intermediate_freq = lnb->GetIntermediateFrequency(
diseqc_settings, tuning);
// if card can auto-FEC, use it -- sometimes NITs are inaccurate
if (capabilities & FE_CAN_FEC_AUTO)
can_fec_auto = true;
// Check DVB-S intermediate frequency here since it requires a fully
// initialized diseqc tree
CheckFrequency(intermediate_freq);
}
LOG(VB_CHANNEL, LOG_INFO, LOC + "Old Params: " + prev_tuning.toString() +
"\n\t\t\t" + LOC + "New Params: " + tuning.toString());
// DVB-S is in kHz, other DVB is in Hz
bool is_dvbs = ((DTVTunerType::kTunerTypeDVBS1 == tunerType) ||
(DTVTunerType::kTunerTypeDVBS2 == tunerType));
int freq_mult = (is_dvbs) ? 1 : 1000;
QString suffix = (is_dvbs) ? "kHz" : "Hz";
if (reset || !prev_tuning.IsEqual(tunerType, tuning, 500 * freq_mult))
{
LOG(VB_CHANNEL, LOG_INFO, LOC + QString("Tune(): Tuning to %1%2")
.arg(intermediate_freq ? intermediate_freq : tuning.frequency)
.arg(suffix));
#if DVB_API_VERSION >=5
if (DTVTunerType::kTunerTypeDVBS2 == tunerType)
{
struct dtv_property p_clear;
struct dtv_properties cmdseq_clear;
p_clear.cmd = DTV_CLEAR;
cmdseq_clear.num = 1;
cmdseq_clear.props = &p_clear;
if ((ioctl(fd_frontend, FE_SET_PROPERTY, &cmdseq_clear)) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Tune(): Clearing DTV properties cache failed." + ENO);
return false;
}
struct dtv_properties *cmds = dtvmultiplex_to_dtvproperties(
tunerType, tuning, intermediate_freq, can_fec_auto);
if (!cmds) {
LOG(VB_GENERAL, LOG_ERR, LOC +
"Failed to convert DTVMultiplex to DTV_PROPERTY sequence");
return false;
}
if (VERBOSE_LEVEL_CHECK(VB_CHANNEL, LOG_DEBUG))
{
for (uint i = 0; i < cmds->num; i++)
{
LOG(VB_CHANNEL, LOG_DEBUG, LOC +
QString("prop %1: cmd = %2, data %3")
.arg(i).arg(cmds->props[i].cmd)
.arg(cmds->props[i].u.data));
}
}
int res = ioctl(fd_frontend, FE_SET_PROPERTY, cmds);
free(cmds->props);
free(cmds);
if (res < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Tune(): Setting Frontend tuning parameters failed." + ENO);
return false;
}
}
else
#endif
{
struct dvb_frontend_parameters params = dtvmultiplex_to_dvbparams(
tunerType, tuning, intermediate_freq, can_fec_auto);
if (ioctl(fd_frontend, FE_SET_FRONTEND, ¶ms) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Tune(): Setting Frontend tuning parameters failed." + ENO);
return false;
}
}
// Extra delay to add for broken DVB drivers
if (tuning_delay)
usleep(tuning_delay * 1000);
wait_for_backend(fd_frontend, 5 /* msec */);
prev_tuning = tuning;
first_tune = false;
}
SetSIStandard(tuning.sistandard);
LOG(VB_CHANNEL, LOG_INFO, LOC + "Tune(): Frequency tuning successful.");
return true;
}
