RESULT eDVBScan::nextChannel()
{
ePtr<iDVBFrontend> fe;
m_SDT = 0; m_PAT = 0; m_BAT = 0; m_NIT = 0, m_PMT = 0;
m_ready = 0;
m_pat_tsid = eTransportStreamID();
/* check what we need */
m_ready_all = readySDT;
if (m_flags & scanNetworkSearch)
m_ready_all |= readyNIT;
if (m_flags & scanSearchBAT)
m_ready_all |= readyBAT;
if (m_usePAT)
m_ready_all |= readyPAT;
if (!m_ch_blindscan.empty())
{
/* keep iterating with the same 'channel' till we get a tune failure */
SCAN_eDebug("[eDVBScan] blindscan channel iteration");
m_ch_current = m_ch_blindscan.front();
}
else
{
m_ch_blindscan_result = NULL;
if (m_ch_toScan.empty())
{
SCAN_eDebug("[eDVBScan] no channels left: %zd scanned, %zd unavailable, %zd database.",
m_ch_scanned.size(), m_ch_unavailable.size(), m_new_channels.size());
m_event(evtFinish);
return -ENOENT;
}
m_ch_current = m_ch_toScan.front();
m_ch_toScan.pop_front();
}
if (m_channel->getFrontend(fe))
{
m_event(evtFail);
return -ENOTSUP;
}
m_chid_current = eDVBChannelID();
m_channel_state = iDVBChannel::state_idle;
if (fe->tune(*m_ch_current, !m_ch_blindscan.empty()))
return nextChannel();
m_event(evtUpdate);
return 0;
}
RESULT eDVBScan::nextChannel()
{
ePtr<iDVBFrontend> fe;
m_SDT = 0; m_PAT = 0; m_BAT = 0; m_NIT = 0, m_PMT = 0;
m_ready = 0;
m_pat_tsid = eTransportStreamID();
/* check what we need */
m_ready_all = readySDT;
if (m_flags & scanNetworkSearch)
m_ready_all |= readyNIT;
if (m_flags & scanSearchBAT)
m_ready_all |= readyBAT;
if (m_usePAT)
m_ready_all |= readyPAT;
if (m_ch_toScan.empty())
{
SCAN_eDebug("[eDVBScan] no channels left to scan.");
SCAN_eDebug("[eDVBScan] %zd channels scanned, %zd were unavailable.",
m_ch_scanned.size(), m_ch_unavailable.size());
SCAN_eDebug("[eDVBScan] %zd channels in database.", m_new_channels.size());
m_event(evtFinish);
return -ENOENT;
}
m_ch_current = m_ch_toScan.front();
m_ch_toScan.pop_front();
if (m_channel->getFrontend(fe))
{
m_event(evtFail);
return -ENOTSUP;
}
m_chid_current = eDVBChannelID();
m_channel_state = iDVBChannel::state_idle;
if (fe->tune(*m_ch_current))
return nextChannel();
m_event(evtUpdate);
return 0;
}
void eDVBScan::VCTready(int err)
{
SCAN_eDebug("[eDVBScan] got vct %d", err);
m_ready |= readySDT;
if (!err)
m_ready |= validVCT;
channelDone();
}
void eDVBScan::PATready(int err)
{
SCAN_eDebug("[eDVBScan] got pat, err %d", err);
m_ready |= readyPAT;
if (!err)
m_ready |= validPAT;
startFilter(); // for starting the SDT filter
}
void eDVBScan::BATready(int err)
{
SCAN_eDebug("[eDVBScan] got bat, err %d", err);
m_ready |= readyBAT;
if (!err)
m_ready |= validBAT;
channelDone();
}
void eDVBScan::NITready(int err)
{
SCAN_eDebug("[eDVBScan] got nit, err %d", err);
m_ready |= readyNIT;
if (!err)
m_ready |= validNIT;
channelDone();
}
eDVBScan::eDVBScan(iDVBChannel *channel, bool usePAT, bool debug)
:m_channel(channel)
,m_channel_state(iDVBChannel::state_idle)
,m_ready(0)
,m_ready_all(usePAT ? (readySDT|readyPAT) : readySDT)
,m_pmt_running(false)
,m_abort_current_pmt(false)
,m_flags(0)
,m_usePAT(usePAT)
,m_scan_debug(debug)
{
if (m_channel->getDemux(m_demux))
SCAN_eDebug("[eDVBScan] failed to allocate demux!");
m_channel->connectStateChange(sigc::mem_fun(*this, &eDVBScan::stateChange), m_stateChanged_connection);
}
void eDVBScan::PMTready(int err)
{
SCAN_eDebug("[eDVBScan] got pmt %d", err);
if (!err)
{
bool scrambled = false;
bool have_audio = false;
bool have_video = false;
unsigned short pcrpid = 0xFFFF;
std::vector<ProgramMapSection*>::const_iterator i;
for (i = m_PMT->getSections().begin(); i != m_PMT->getSections().end(); ++i)
{
const ProgramMapSection &pmt = **i;
if (pcrpid == 0xFFFF)
pcrpid = pmt.getPcrPid();
else
SCAN_eDebug("[eDVBScan] already have a pcrpid %04x %04x", pcrpid, pmt.getPcrPid());
ElementaryStreamInfoConstIterator es;
for (es = pmt.getEsInfo()->begin(); es != pmt.getEsInfo()->end(); ++es)
{
int isaudio = 0, isvideo = 0, is_scrambled = 0, forced_audio = 0, forced_video = 0;
switch ((*es)->getType())
{
case 0x1b: // AVC Video Stream (MPEG4 H264)
case 0x24: // H265 HEVC
case 0x10: // MPEG 4 Part 2
case 0x01: // MPEG 1 video
case 0x02: // MPEG 2 video
isvideo = 1;
forced_video = 1;
//break; fall through !!!
case 0x03: // MPEG 1 audio
case 0x04: // MPEG 2 audio
case 0x0f: // MPEG 2 AAC
case 0x11: // MPEG 4 AAC
if (!isvideo)
{
forced_audio = 1;
isaudio = 1;
}
case 0x06: // PES Private
case 0x81: // user private
case 0xEA: // TS_PSI_ST_SMPTE_VC1
for (DescriptorConstIterator desc = (*es)->getDescriptors()->begin();
desc != (*es)->getDescriptors()->end(); ++desc)
{
uint8_t tag = (*desc)->getTag();
/* PES private can contain AC-3, DTS or lots of other stuff.
check descriptors to get the exakt type. */
if (!forced_video && !forced_audio)
{
switch (tag)
{
case 0x1C: // TS_PSI_DT_MPEG4_Audio
case 0x2B: // TS_PSI_DT_MPEG2_AAC
case AAC_DESCRIPTOR:
case AC3_DESCRIPTOR:
case DTS_DESCRIPTOR:
case AUDIO_STREAM_DESCRIPTOR:
isaudio = 1;
break;
case 0x28: // TS_PSI_DT_AVC
case 0x1B: // TS_PSI_DT_MPEG4_Video
case VIDEO_STREAM_DESCRIPTOR:
isvideo = 1;
break;
case REGISTRATION_DESCRIPTOR: /* some services don't have a separate AC3 descriptor */
{
RegistrationDescriptor *d = (RegistrationDescriptor*)(*desc);
switch (d->getFormatIdentifier())
{
case 0x44545331 ... 0x44545333: // DTS1/DTS2/DTS3
case 0x41432d33: // == 'AC-3'
case 0x42535344: // == 'BSSD' (LPCM)
isaudio = 1;
break;
case 0x56432d31: // == 'VC-1'
isvideo = 1;
break;
default:
break;
}
}
default:
break;
}
}
if (tag == CA_DESCRIPTOR)
is_scrambled = 1;
}
default:
break;
}
if (isvideo)
have_video = true;
else if (isaudio)
have_audio = true;
else
continue;
if (is_scrambled)
scrambled = true;
}
for (DescriptorConstIterator desc = pmt.getDescriptors()->begin();
desc != pmt.getDescriptors()->end(); ++desc)
{
if ((*desc)->getTag() == CA_DESCRIPTOR)
scrambled = true;
}
}
m_pmt_in_progress->second.scrambled = scrambled;
if ( have_video )
m_pmt_in_progress->second.serviceType = 1;
else if ( have_audio )
m_pmt_in_progress->second.serviceType = 2;
else
m_pmt_in_progress->second.serviceType = 100;
}
void eDVBScan::stateChange(iDVBChannel *ch)
{
int state;
if (ch->getState(state))
return;
if (m_channel_state == state)
return;
if (state == iDVBChannel::state_ok)
{
if (m_ch_current && m_channel)
{
int type;
m_ch_current->getSystem(type);
if (type == iDVBFrontend::feTerrestrial)
{
eDVBFrontendParametersTerrestrial parm;
m_ch_current->getDVBT(parm);
if (parm.system == eDVBFrontendParametersTerrestrial::System_DVB_T_T2)
{
/* we have a lock, this is a valid DVB-T transponder, set our system parameter */
parm.system = eDVBFrontendParametersTerrestrial::System_DVB_T;
m_ch_current->setDVBT(parm);
}
}
}
if (!m_ch_blindscan.empty())
{
/* update current blindscan iteration channel with scanned parameters */
if (m_ch_current && m_channel)
{
ePtr<iDVBFrontend> fe;
m_channel->getFrontend(fe);
if (fe)
{
ePtr<iDVBTransponderData> tp;
fe->getTransponderData(tp, false);
if (tp)
{
ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
int type;
m_ch_current->getSystem(type);
switch (type)
{
case iDVBFrontend::feSatellite:
{
eDVBFrontendParametersSatellite parm;
m_ch_current->getDVBS(parm);
parm.system = tp->getSystem();
parm.frequency = tp->getFrequency();
parm.symbol_rate = tp->getSymbolRate();
parm.modulation = tp->getModulation();
feparm->setDVBS(parm);
break;
}
case iDVBFrontend::feCable:
{
eDVBFrontendParametersCable parm;
m_ch_current->getDVBC(parm);
parm.system = tp->getSystem();
parm.frequency = tp->getFrequency();
parm.symbol_rate = tp->getSymbolRate();
parm.modulation = tp->getModulation();
feparm->setDVBC(parm);
break;
}
case iDVBFrontend::feTerrestrial:
{
eDVBFrontendParametersTerrestrial parm;
m_ch_current->getDVBT(parm);
parm.system = tp->getSystem();
parm.frequency = tp->getFrequency();
parm.bandwidth = tp->getBandwidth();
parm.modulation = tp->getConstellation();
feparm->setDVBT(parm);
break;
}
case iDVBFrontend::feATSC:
{
eDVBFrontendParametersATSC parm;
m_ch_current->getATSC(parm);
parm.system = tp->getSystem();
parm.frequency = tp->getFrequency();
feparm->setATSC(parm);
break;
}
}
m_ch_current = m_ch_blindscan_result = feparm;
}
}
}
}
startFilter();
m_channel_state = state;
} else if (state == iDVBChannel::state_failed)
{
if (m_ch_current && m_channel)
{
int type;
m_ch_current->getSystem(type);
m_ch_unavailable.push_back(m_ch_current);
if (type == iDVBFrontend::feTerrestrial)
{
eDVBFrontendParametersTerrestrial parm;
m_ch_current->getDVBT(parm);
if (parm.system == eDVBFrontendParametersTerrestrial::System_DVB_T_T2)
{
/* we have to scan T2 as well as T */
ePtr<iDVBFrontend> fe;
eDVBFrontendParameters eparm;
parm.system = eDVBFrontendParametersTerrestrial::System_DVB_T2;
eparm.setDVBT(parm);
m_channel->getFrontend(fe);
if (fe)
{
ePtr<iDVBFrontendParameters> feparm = new eDVBFrontendParameters(eparm);
/* but only if the frontend supports T2 */
if (fe->isCompatibleWith(feparm))
{
addChannelToScan(feparm);
}
}
}
}
}
if (!m_ch_blindscan.empty())
{
/* tune failure, this means the blindscan channel iteration run has completed */
SCAN_eDebug("[eDVBScan] blindscan channel completed");
m_ch_blindscan.pop_front();
}
nextChannel();
}
/* unavailable will timeout, anyway. */
}
