// documented in dvbchannel.h
double DVBChannel::GetSignalStrength(bool *ok) const
{
const DVBChannel *master = GetMasterLock();
if (master != this)
{
double val = master->GetSignalStrength(ok);
ReturnMasterLock(master);
return val;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
// We use uint16_t for sig because this is correct for DVB API 4.0,
// and works better than the correct int16_t for the 3.x API
uint16_t sig = 0;
int ret = ioctl(fd_frontend, FE_READ_SIGNAL_STRENGTH, &sig);
if (ret < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Getting Frontend signal strength failed." + ENO);
}
if (ok)
*ok = (0 == ret);
return sig * (1.0 / 65535.0);
}
// documented in dvbchannel.h
bool DVBChannel::HasLock(bool *ok) const
{
const DVBChannel *master = GetMasterLock();
if (master != this)
{
bool haslock = master->HasLock(ok);
ReturnMasterLock(master);
return haslock;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
fe_status_t status;
memset(&status, 0, sizeof(status));
int ret = ioctl(fd_frontend, FE_READ_STATUS, &status);
if (ret < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Getting Frontend status failed." + ENO);
}
if (ok)
*ok = (0 == ret);
return status & FE_HAS_LOCK;
}
/** \fn DVBChannel::ProbeTuningParams(DTVMultiplex&) const
* \brief Fetches DTVMultiplex params from driver
*
* Note: Only updates tuning on success.
*
* \return true on success, false on failure
*/
bool DVBChannel::ProbeTuningParams(DTVMultiplex &tuning) const
{
QMutexLocker locker(&hw_lock);
if (fd_frontend < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Card not open!");
return false;
}
const DVBChannel *master = GetMasterLock();
if (master != this)
{
bool ok = master->ProbeTuningParams(tuning);
ReturnMasterLock(master);
return ok;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
if (diseqc_tree)
{
// TODO We need to implement the inverse of
// lnb->GetIntermediateFrequency() for ProbeTuningParams()
// to accurately reflect the frequency before LNB transform.
return false;
}
if (tunerType == DTVTunerType::kTunerTypeDVBS2)
{
// TODO implement probing of tuning parameters with FE_GET_PROPERTY
return false;
}
dvb_frontend_parameters params;
if (ioctl(fd_frontend, FE_GET_FRONTEND, ¶ms) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Getting Frontend tuning parameters failed." + ENO);
return false;
}
uint mplex = tuning.mplex;
QString sistandard = tuning.sistandard; sistandard.detach();
tuning = dvbparams_to_dtvmultiplex(tunerType, params);
tuning.mplex = mplex;
tuning.sistandard = sistandard;
return true;
}
bool DVBChannel::IsMaster(void) const
{
const DVBChannel *master = GetMasterLock();
bool is_master = (master == this);
ReturnMasterLock(master);
return is_master;
}
/** \fn DVBChannel::IsTuningParamsProbeSupported(void) const
* \brief Returns true iff tuning info probing is working.
*/
bool DVBChannel::IsTuningParamsProbeSupported(void) const
{
QMutexLocker locker(&hw_lock);
if (fd_frontend < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC + "Card not open!");
return false;
}
const DVBChannel *master = GetMasterLock();
if (master != this)
{
bool ok = master->IsTuningParamsProbeSupported();
ReturnMasterLock(master);
return ok;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
if (diseqc_tree)
{
// TODO We need to implement the inverse of
// lnb->GetIntermediateFrequency() for ProbeTuningParams()
// to accurately reflect the frequency before LNB transform.
return false;
}
dvb_frontend_parameters params;
int res = ioctl(fd_frontend, FE_GET_FRONTEND, ¶ms);
if (res < 0)
{
LOG(VB_CHANNEL, LOG_ERR, LOC + "Getting device frontend failed." + ENO);
}
return (res >= 0);
}
void DVBChannel::Close(DVBChannel *who)
{
LOG(VB_CHANNEL, LOG_INFO, LOC + "Closing DVB channel");
IsOpenMap::iterator it = is_open.find(who);
if (it == is_open.end())
return; // this caller didn't have it open in the first place..
is_open.erase(it);
QMutexLocker locker(&hw_lock);
DVBChannel *master = GetMasterLock();
if (master != NULL && master != this)
{
if (dvbcam->IsRunning())
dvbcam->SetPMT(this, NULL);
master->Close(this);
fd_frontend = -1;
ReturnMasterLock(master);
return;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
if (!is_open.empty())
return; // not all callers have closed the DVB channel yet..
if (diseqc_tree)
diseqc_tree->Close();
if (fd_frontend >= 0)
{
close(fd_frontend);
fd_frontend = -1;
dvbcam->Stop();
}
}
// documented in dvbchannel.h
double DVBChannel::GetUncorrectedBlockCount(bool *ok) const
{
const DVBChannel *master = GetMasterLock();
if (master != this)
{
double val = master->GetUncorrectedBlockCount(ok);
ReturnMasterLock(master);
return val;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
uint32_t ublocks = 0;
int ret = ioctl(fd_frontend, FE_READ_UNCORRECTED_BLOCKS, &ublocks);
if (ret < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Getting Frontend uncorrected block count failed." + ENO);
}
if (ok)
*ok = (0 == ret);
return (double) ublocks;
}
// documented in dvbchannel.h
double DVBChannel::GetBitErrorRate(bool *ok) const
{
const DVBChannel *master = GetMasterLock();
if (master != this)
{
double val = master->GetBitErrorRate(ok);
ReturnMasterLock(master);
return val;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
uint32_t ber = 0;
int ret = ioctl(fd_frontend, FE_READ_BER, &ber);
if (ret < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Getting Frontend signal error rate failed." + ENO);
}
if (ok)
*ok = (0 == ret);
return (double) ber;
}
/**
* \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;
}
bool DVBChannel::Open(DVBChannel *who)
{
LOG(VB_CHANNEL, LOG_INFO, LOC + "Opening DVB channel");
QMutexLocker locker(&hw_lock);
if (fd_frontend >= 0)
{
is_open[who] = true;
return true;
}
DVBChannel *master = GetMasterLock();
if (master != this)
{
if (!master->Open(who))
{
ReturnMasterLock(master);
return false;
}
fd_frontend = master->fd_frontend;
frontend_name = master->frontend_name;
tunerType = master->tunerType;
capabilities = master->capabilities;
ext_modulations = master->ext_modulations;
frequency_minimum = master->frequency_minimum;
frequency_maximum = master->frequency_maximum;
symbol_rate_minimum = master->symbol_rate_minimum;
symbol_rate_maximum = master->symbol_rate_maximum;
is_open[who] = true;
if (!InitializeInputs())
{
Close();
ReturnMasterLock(master);
return false;
}
ReturnMasterLock(master);
return true;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
QString devname = CardUtil::GetDeviceName(DVB_DEV_FRONTEND, device);
QByteArray devn = devname.toAscii();
for (int tries = 1; ; ++tries)
{
fd_frontend = open(devn.constData(), O_RDWR | O_NONBLOCK);
if (fd_frontend >= 0)
break;
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Opening DVB frontend device failed." + ENO);
if (tries >= 20 || (errno != EBUSY && errno != EAGAIN))
{
LOG(VB_GENERAL, LOG_ERR, LOC +
QString("Failed to open DVB frontend device due to "
"fatal error or too many attempts."));
return false;
}
usleep(50000);
}
dvb_frontend_info info;
memset(&info, 0, sizeof(info));
if (ioctl(fd_frontend, FE_GET_INFO, &info) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Failed to get frontend information." + ENO);
close(fd_frontend);
fd_frontend = -1;
return false;
}
frontend_name = info.name;
tunerType = info.type;
#if HAVE_FE_CAN_2G_MODULATION
if (tunerType == DTVTunerType::kTunerTypeDVBS1 &&
(info.caps & FE_CAN_2G_MODULATION))
tunerType = DTVTunerType::kTunerTypeDVBS2;
#endif // HAVE_FE_CAN_2G_MODULATION
capabilities = info.caps;
frequency_minimum = info.frequency_min;
frequency_maximum = info.frequency_max;
symbol_rate_minimum = info.symbol_rate_min;
symbol_rate_maximum = info.symbol_rate_max;
LOG(VB_RECORD, LOG_INFO, LOC +
QString("Using DVB card %1, with frontend '%2'.")
.arg(device).arg(frontend_name));
// Turn on the power to the LNB
if (tunerType.IsDiSEqCSupported())
{
diseqc_tree = diseqc_dev.FindTree(GetCardID());
if (diseqc_tree)
diseqc_tree->Open(fd_frontend);
}
dvbcam->Start();
first_tune = true;
if (!InitializeInputs())
{
Close();
return false;
}
if (fd_frontend >= 0)
is_open[who] = true;
return (fd_frontend >= 0);
}
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)
{
const DVBChannel *master = GetMasterLock();
if (master == NULL || !master->diseqc_tree)
CheckFrequency(tuning.frequency);
ReturnMasterLock(master);
}
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 &&
DTVTunerType::kTunerTypeDVBT2 != 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());
}
bool DVBChannel::Open(DVBChannel *who)
{
LOG(VB_CHANNEL, LOG_INFO, LOC + "Opening DVB channel");
if (!m_inputid)
{
if (!InitializeInput())
return false;
}
QMutexLocker locker(&m_hw_lock);
if (m_fd_frontend >= 0)
{
m_is_open[who] = true;
return true;
}
DVBChannel *master = GetMasterLock();
if (master != this)
{
if (!master->Open(who))
{
ReturnMasterLock(master);
return false;
}
m_fd_frontend = master->m_fd_frontend;
m_frontend_name = master->m_frontend_name;
m_tunerType = master->m_tunerType;
m_capabilities = master->m_capabilities;
m_ext_modulations = master->m_ext_modulations;
m_frequency_minimum = master->m_frequency_minimum;
m_frequency_maximum = master->m_frequency_maximum;
m_symbol_rate_minimum = master->m_symbol_rate_minimum;
m_symbol_rate_maximum = master->m_symbol_rate_maximum;
m_is_open[who] = true;
if (!InitializeInput())
{
Close();
ReturnMasterLock(master);
return false;
}
ReturnMasterLock(master);
return true;
}
ReturnMasterLock(master); // if we're the master we don't need this lock..
QString devname = CardUtil::GetDeviceName(DVB_DEV_FRONTEND, m_device);
QByteArray devn = devname.toLatin1();
for (int tries = 1; ; ++tries)
{
m_fd_frontend = open(devn.constData(), O_RDWR | O_NONBLOCK);
if (m_fd_frontend >= 0)
break;
LOG(VB_GENERAL, LOG_WARNING, LOC +
"Opening DVB frontend device failed." + ENO);
if (tries >= 20 || (errno != EBUSY && errno != EAGAIN))
{
LOG(VB_GENERAL, LOG_ERR, LOC +
QString("Failed to open DVB frontend device due to "
"fatal error or too many attempts."));
return false;
}
usleep(50000);
}
dvb_frontend_info info;
memset(&info, 0, sizeof(info));
if (ioctl(m_fd_frontend, FE_GET_INFO, &info) < 0)
{
LOG(VB_GENERAL, LOG_ERR, LOC +
"Failed to get frontend information." + ENO);
close(m_fd_frontend);
m_fd_frontend = -1;
return false;
}
m_frontend_name = info.name;
m_tunerType = info.type;
#if HAVE_FE_CAN_2G_MODULATION
if (info.caps & FE_CAN_2G_MODULATION)
{
if (m_tunerType == DTVTunerType::kTunerTypeDVBS1)
m_tunerType = DTVTunerType::kTunerTypeDVBS2;
else if (m_tunerType == DTVTunerType::kTunerTypeDVBT)
m_tunerType = DTVTunerType::kTunerTypeDVBT2;
}
#endif // HAVE_FE_CAN_2G_MODULATION
m_capabilities = info.caps;
m_frequency_minimum = info.frequency_min;
m_frequency_maximum = info.frequency_max;
m_symbol_rate_minimum = info.symbol_rate_min;
m_symbol_rate_maximum = info.symbol_rate_max;
#if DVB_API_VERSION >=5
unsigned int i;
struct dtv_property prop;
struct dtv_properties cmd;
memset(&prop, 0, sizeof(prop));
prop.cmd = DTV_API_VERSION;
cmd.num = 1;
cmd.props = ∝
if (ioctl(m_fd_frontend, FE_GET_PROPERTY, &cmd) == 0)
{
LOG(VB_RECORD, LOG_INFO, LOC +
QString("dvb api version %1.%2").arg((prop.u.data>>8)&0xff).arg((prop.u.data)&0xff));
}
