bool CetonChannel::Tune(const DTVMultiplex &tuning, QString /*inputname*/)
{
QString modulation = format_modulation(tuning);
LOG(VB_CHANNEL, LOG_INFO, LOC + QString("Tuning to %1 %2")
.arg(tuning.frequency).arg(modulation));
if (_stream_handler->TuneFrequency(tuning.frequency, modulation))
{
SetSIStandard(tuning.sistandard);
return true;
}
return false;
}
/**
* \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 DTVChannel::SetChannelByString(const QString &channum)
{
QString loc = LOC + QString("SetChannelByString(%1): ").arg(channum);
LOG(VB_CHANNEL, LOG_INFO, loc);
ClearDTVInfo();
if (!IsOpen() && !Open())
{
LOG(VB_GENERAL, LOG_ERR, loc + "Channel object "
"will not open, can not change channels.");
return false;
}
if (m_inputs.size() > 1)
{
QString inputName;
if (!CheckChannel(channum, inputName))
{
LOG(VB_GENERAL, LOG_ERR, loc +
"CheckChannel failed.\n\t\t\tPlease verify the channel "
"in the 'mythtv-setup' Channel Editor.");
return false;
}
// If CheckChannel filled in the inputName then we need to
// change inputs and return, since the act of changing
// inputs will change the channel as well.
if (!inputName.isEmpty())
return SwitchToInput(inputName, channum);
}
InputMap::const_iterator it = m_inputs.find(m_currentInputID);
if (it == m_inputs.end())
return false;
uint mplexid_restriction;
uint chanid_restriction;
if (!IsInputAvailable(m_currentInputID, mplexid_restriction,
chanid_restriction))
{
LOG(VB_GENERAL, LOG_INFO, loc +
QString("Requested channel '%1' is on input '%2' "
"which is in a busy input group")
.arg(channum).arg(m_currentInputID));
return false;
}
// Fetch tuning data from the database.
QString tvformat, modulation, freqtable, freqid, si_std;
int finetune;
uint64_t frequency;
int mpeg_prog_num;
uint atsc_major, atsc_minor, mplexid, chanid, tsid, netid;
if (!ChannelUtil::GetChannelData(
(*it)->sourceid, chanid, channum,
tvformat, modulation, freqtable, freqid,
finetune, frequency,
si_std, mpeg_prog_num, atsc_major, atsc_minor, tsid, netid,
mplexid, m_commfree))
{
LOG(VB_GENERAL, LOG_ERR, loc + "Unable to find channel in database.");
return false;
}
if ((mplexid_restriction && (mplexid != mplexid_restriction)) ||
(chanid_restriction && (chanid != chanid_restriction)))
{
LOG(VB_GENERAL, LOG_ERR, loc +
QString("Requested channel '%1' is not available because "
"the tuner is currently in use on another transport.")
.arg(channum));
return false;
}
// If the frequency is zeroed out, don't use it directly.
if (frequency == 0)
{
frequency = (freqid.toULongLong() + finetune) * 1000;
mplexid = 0;
}
bool isFrequency = (frequency > 10000000);
bool hasTuneToChan =
!(*it)->tuneToChannel.isEmpty() && (*it)->tuneToChannel != "Undefined";
// If we are tuning to a freqid, rather than an actual frequency,
// we may need to set the frequency table to use.
if (!isFrequency || hasTuneToChan)
SetFreqTable(freqtable);
// Set NTSC, PAL, ATSC, etc.
SetFormat(tvformat);
// If a tuneToChannel is set make sure we're still on it
if (hasTuneToChan)
Tune((*it)->tuneToChannel, 0);
// Clear out any old PAT or PMT & save version info
uint version = 0;
if (genPAT)
{
version = (genPAT->Version()+1) & 0x1f;
delete genPAT; genPAT = NULL;
delete genPMT; genPMT = NULL;
}
bool ok = true;
if ((*it)->externalChanger.isEmpty())
{
if (IsIPTV())
{
int chanid = ChannelUtil::GetChanID((*it)->sourceid, channum);
IPTVTuningData tuning = ChannelUtil::GetIPTVTuningData(chanid);
if (!Tune(tuning, false))
{
LOG(VB_GENERAL, LOG_ERR, loc + "Tuning to IPTV URL");
ClearDTVInfo();
ok = false;
}
}
else if ((*it)->name.contains("composite", Qt::CaseInsensitive) ||
(*it)->name.contains("s-video", Qt::CaseInsensitive))
{
LOG(VB_GENERAL, LOG_WARNING, loc + "You have not set "
"an external channel changing"
"\n\t\t\tscript for a composite or s-video "
"input. Channel changing will do nothing.");
}
else if (isFrequency && Tune(frequency, ""))
{
}
else if (isFrequency)
{
// Initialize basic the tuning parameters
DTVMultiplex tuning;
if (!mplexid || !tuning.FillFromDB(tunerType, mplexid))
{
LOG(VB_GENERAL, LOG_ERR, loc +
"Failed to initialize multiplex options");
ok = false;
}
else
{
// Try to fix any problems with the multiplex
CheckOptions(tuning);
// Tune to proper multiplex
if (!Tune(tuning, (*it)->name))
{
LOG(VB_GENERAL, LOG_ERR, loc + "Tuning to frequency.");
ClearDTVInfo();
ok = false;
}
}
}
else
{
// ExternalChannel justs wants the channum
ok = freqid.isEmpty() && finetune == 0 ?
Tune(channum) : Tune(freqid, finetune);
}
}
LOG(VB_CHANNEL, LOG_INFO, loc + ((ok) ? "success" : "failure"));
if (!ok)
return false;
if (atsc_minor || (mpeg_prog_num>=0))
{
SetSIStandard(si_std);
SetDTVInfo(atsc_major, atsc_minor, netid, tsid, mpeg_prog_num);
}
else if (IsPIDTuningSupported())
{
// We need to pull the pid_cache since there are no tuning tables
pid_cache_t pid_cache;
int chanid = ChannelUtil::GetChanID((*it)->sourceid, channum);
ChannelUtil::GetCachedPids(chanid, pid_cache);
if (pid_cache.empty())
{
LOG(VB_GENERAL, LOG_ERR, loc + "PID cache is empty");
return false;
}
// Now we construct the PAT & PMT
vector<uint> pnum; pnum.push_back(1);
vector<uint> pid; pid.push_back(9999);
genPAT = ProgramAssociationTable::Create(0,version,pnum,pid);
int pcrpid = -1;
vector<uint> pids;
vector<uint> types;
pid_cache_t::iterator pit = pid_cache.begin();
for (; pit != pid_cache.end(); ++pit)
{
if (!pit->GetStreamID())
continue;
pids.push_back(pit->GetPID());
types.push_back(pit->GetStreamID());
if (pit->IsPCRPID())
pcrpid = pit->GetPID();
if ((pcrpid < 0) && StreamID::IsVideo(pit->GetStreamID()))
pcrpid = pit->GetPID();
}
if (pcrpid < 0)
pcrpid = pid_cache[0].GetPID();
genPMT = ProgramMapTable::Create(
pnum.back(), pid.back(), pcrpid, version, pids, types);
SetSIStandard("mpeg");
SetDTVInfo(0,0,0,0,-1);
}
// Set the current channum to the new channel's channum
m_curchannelname = channum;
// Setup filters & recording picture attributes for framegrabing recorders
// now that the new curchannelname has been established.
if (m_pParent)
m_pParent->SetVideoFiltersForChannel(GetCurrentSourceID(), channum);
InitPictureAttributes();
HandleScript(freqid);
return ok;
}
