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;
}
bool DVBChannel::SetChannelByString(const QString &channum)
{
QString tmp = QString("SetChannelByString(%1): ").arg(channum);
QString loc = LOC + tmp;
QString loc_err = LOC_ERR + tmp;
VERBOSE(VB_CHANNEL, loc);
if (!IsOpen())
{
VERBOSE(VB_IMPORTANT, loc_err + "Channel object "
"will not open, cannot change channels.");
ClearDTVInfo();
return false;
}
ClearDTVInfo();
QString inputName;
if (!CheckChannel(channum, inputName))
{
VERBOSE(VB_IMPORTANT, loc_err +
"CheckChannel failed.\n\t\t\tPlease verify the channel "
"in the 'mythtv-setup' Channel Editor.");
return false;
}
// If CheckChannel filled in the inputName we need to change inputs.
if (!inputName.isEmpty() && (nextInputID == m_currentInputID))
nextInputID = GetInputByName(inputName);
// Get the input data for the channel
int inputid = (nextInputID >= 0) ? nextInputID : m_currentInputID;
InputMap::const_iterator it = m_inputs.find(inputid);
if (it == m_inputs.end())
return false;
uint mplexid_restriction;
if (!IsInputAvailable(inputid, mplexid_restriction))
{
VERBOSE(VB_IMPORTANT, loc_err + "Input is not available");
return false;
}
// Get the input data for the channel
QString tvformat, modulation, freqtable, freqid, si_std;
int finetune;
uint64_t frequency;
int mpeg_prog_num;
uint atsc_major, atsc_minor, mplexid, tsid, netid;
if (!ChannelUtil::GetChannelData(
(*it)->sourceid, channum,
tvformat, modulation, freqtable, freqid,
finetune, frequency,
si_std, mpeg_prog_num, atsc_major, atsc_minor, tsid, netid,
mplexid, m_commfree))
{
VERBOSE(VB_IMPORTANT, loc_err +
"Unable to find channel in database.");
return false;
}
if (mplexid_restriction && (mplexid != mplexid_restriction))
{
VERBOSE(VB_IMPORTANT, loc_err + "Multiplex is not available");
return false;
}
// Initialize basic the tuning parameters
DTVMultiplex tuning;
if (!mplexid || !tuning.FillFromDB(tunerType, mplexid))
{
VERBOSE(VB_IMPORTANT, loc_err +
"Failed to initialize multiplex options");
return false;
}
SetDTVInfo(atsc_major, atsc_minor, netid, tsid, mpeg_prog_num);
// Try to fix any problems with the multiplex
CheckOptions(tuning);
if (!Tune(tuning, inputid))
{
VERBOSE(VB_IMPORTANT, loc_err + "Tuning to frequency.");
ClearDTVInfo();
return false;
}
QString tmpX = channum; tmpX.detach();
m_curchannelname = tmpX;
VERBOSE(VB_CHANNEL, loc + "Tuned to frequency.");
m_currentInputID = nextInputID;
QString tmpY = m_curchannelname; tmpY.detach();
m_inputs[m_currentInputID]->startChanNum = tmpY;
return true;
}
