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scan.cpp
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scan.cpp
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#include <fcntl.h>
#include <lib/dvb/idvb.h>
#include <dvbsi++/descriptor_tag.h>
#include <dvbsi++/service_descriptor.h>
#include <dvbsi++/satellite_delivery_system_descriptor.h>
#include <dvbsi++/s2_satellite_delivery_system_descriptor.h>
#include <dvbsi++/terrestrial_delivery_system_descriptor.h>
#include <dvbsi++/t2_delivery_system_descriptor.h>
#include <dvbsi++/logical_channel_descriptor.h>
#include <dvbsi++/cable_delivery_system_descriptor.h>
#include <dvbsi++/ca_identifier_descriptor.h>
#include <dvbsi++/registration_descriptor.h>
#include <dvbsi++/extension_descriptor.h>
#include <dvbsi++/frequency_list_descriptor.h>
#include <lib/dvb/specs.h>
#include <lib/dvb/esection.h>
#include <lib/dvb/scan.h>
#include <lib/dvb/frontend.h>
#include <lib/dvb/db.h>
#include <lib/dvb/frontendparms.h>
#include <lib/base/eenv.h>
#include <lib/base/eerror.h>
#include <lib/base/estring.h>
#include <lib/dvb/dvb.h>
#include <lib/dvb/db.h>
#include <lib/python/python.h>
#include <errno.h>
#define SCAN_eDebug(x...) do { if (m_scan_debug) eDebug(x); } while(0)
#define SCAN_eDebugNoNewLineStart(x...) do { if (m_scan_debug) eDebugNoNewLineStart(x); } while(0)
#define SCAN_eDebugNoNewLine(x...) do { if (m_scan_debug) eDebugNoNewLine(x); } while(0)
#define SCAN_eDebugNoNewLineEnd(x...) do { if (m_scan_debug) eDebugNoNewLineEnd(x); } while(0)
DEFINE_REF(eDVBScan);
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("scan: failed to allocate demux!");
m_channel->connectStateChange(slot(*this, &eDVBScan::stateChange), m_stateChanged_connection);
m_lcn_file = NULL;
}
eDVBScan::~eDVBScan()
{
if (m_lcn_file)
fclose(m_lcn_file);
}
int eDVBScan::isValidONIDTSID(int orbital_position, eOriginalNetworkID onid, eTransportStreamID tsid)
{
/*
* Assume cable and terrestrial ONIDs/TSIDs are always valid,
* don't check them against the satellite blacklist.
*/
if (orbital_position == 0xFFFF || orbital_position == 0xEEEE) return 1;
int ret;
switch (onid.get())
{
case 0:
case 0x1111:
ret=0;
break;
case 0x13E: // workaround for 11258H and 11470V on hotbird with same ONID/TSID (0x13E/0x578)
ret = orbital_position != 130 || tsid != 0x578;
break;
case 1:
ret = orbital_position == 192;
break;
case 0x00B1:
ret = tsid != 0x00B0;
break;
case 0x00eb:
ret = tsid != 0x4321;
break;
case 0x0002:
ret = abs(orbital_position-282) < 6 && tsid != 2019;
// 12070H and 10936V have same tsid/onid.. but even the same services are provided
break;
case 0x2000:
ret = tsid != 0x1000;
break;
case 0x5E: // Sirius 4.8E 12322V and 12226H
ret = abs(orbital_position-48) < 3 && tsid != 1;
break;
case 0x0070: // Eutelsat W7 36.0E 12174L and 12284R have same ONID/TSID (0x0070/0x0008)
ret = orbital_position != 360 || tsid != 0x0008;
break;
case 10100: // Eutelsat W7 36.0E 11644V and 11652V
ret = orbital_position != 360 || tsid != 10187;
break;
case 42: // Tuerksat 42.0E
ret = orbital_position != 420 || (
tsid != 8 && // 11830V 12729V
tsid != 5 && // 12679V 12685H
tsid != 2 && // 11096V 12015H
tsid != 55); // 11996V 11716V
break;
case 100: // Intelsat 10 68.5E 3808V 3796V 4012V, Amos 4.0W 10723V 11571H
ret = (orbital_position != 685 && orbital_position != 3560) || tsid != 1;
break;
case 70: // Thor 0.8W 11862H 12341V
ret = abs(orbital_position-3592) < 3 && tsid != 46;
break;
case 32: // NSS 806 (40.5W) 4059R, 3774L
ret = orbital_position != 3195 || tsid != 21;
break;
case 126: // 11221H and 11387H on Utelsat 7.0E with same ONID/TSID (126/40700) and 11304H, 11262H (126/30300)
ret = orbital_position != 70 || (tsid != 40700 && tsid !=30300);
break;
case 3622: // 11881H and 12284V on Badr 26.0E with same ONID/TSID (3622/100)
ret = orbital_position != 260 || tsid != 100;
break;
default:
ret = onid.get() < 0xFF00;
break;
}
return ret;
}
eDVBNamespace eDVBScan::buildNamespace(eOriginalNetworkID onid, eTransportStreamID tsid, unsigned long hash)
{
// on valid ONIDs, ignore frequency ("sub network") part
if (isValidONIDTSID((hash >> 16) & 0xFFFF, onid, tsid))
hash &= ~0xFFFF;
return eDVBNamespace(hash);
}
void eDVBScan::stateChange(iDVBChannel *ch)
{
int state;
if (ch->getState(state))
return;
if (m_channel_state == state)
return;
if (state == iDVBChannel::state_ok)
{
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);
}
}
}
}
}
nextChannel();
}
/* unavailable will timeout, anyway. */
}
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("no channels left to scan.");
SCAN_eDebug("%zd channels scanned, %zd were unavailable.",
m_ch_scanned.size(), m_ch_unavailable.size());
SCAN_eDebug("%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;
}
RESULT eDVBScan::startFilter()
{
bool startSDT=true;
ASSERT(m_demux);
/* only start required filters filter */
if (m_ready_all & readyPAT)
startSDT = m_ready & readyPAT;
// m_ch_current is not set, when eDVBScan is just used for a SDT update
if (!m_ch_current)
{
unsigned int channelFlags;
m_channel->getCurrentFrontendParameters(m_ch_current);
m_ch_current->getFlags(channelFlags);
if (channelFlags & iDVBFrontendParameters::flagOnlyFree)
m_flags |= scanOnlyFree;
}
m_SDT = 0;
if (startSDT && (m_ready_all & readySDT))
{
m_SDT = new eTable<ServiceDescriptionSection>;
int tsid=-1;
if (m_ready & readyPAT && m_ready & validPAT)
{
std::vector<ProgramAssociationSection*>::const_iterator i =
m_PAT->getSections().begin();
ASSERT(i != m_PAT->getSections().end());
tsid = (*i)->getTableIdExtension(); // in PAT this is the transport stream id
m_pat_tsid = eTransportStreamID(tsid);
for (; i != m_PAT->getSections().end(); ++i)
{
const ProgramAssociationSection &pat = **i;
ProgramAssociationConstIterator program = pat.getPrograms()->begin();
for (; program != pat.getPrograms()->end(); ++program)
m_pmts_to_read.insert(std::pair<unsigned short, service>((*program)->getProgramNumber(), service((*program)->getProgramMapPid())));
}
m_PMT = new eTable<ProgramMapSection>;
CONNECT(m_PMT->tableReady, eDVBScan::PMTready);
PMTready(-2);
// KabelBW HACK ... on 618Mhz and 626Mhz the transport stream id in PAT and SDT is different
{
int type;
m_ch_current->getSystem(type);
if (type == iDVBFrontend::feCable)
{
eDVBFrontendParametersCable parm;
m_ch_current->getDVBC(parm);
if ((tsid == 0x00d7 && abs(parm.frequency-618000) < 2000) ||
(tsid == 0x00d8 && abs(parm.frequency-626000) < 2000))
tsid = -1;
}
}
}
if (tsid == -1)
{
if (m_SDT->start(m_demux, eDVBSDTSpec()))
return -1;
}
else if (m_SDT->start(m_demux, eDVBSDTSpec(tsid, true)))
return -1;
CONNECT(m_SDT->tableReady, eDVBScan::SDTready);
}
if (!(m_ready & readyPAT))
{
m_PAT = 0;
if (m_ready_all & readyPAT)
{
m_PAT = new eTable<ProgramAssociationSection>;
if (m_PAT->start(m_demux, eDVBPATSpec(4000)))
return -1;
CONNECT(m_PAT->tableReady, eDVBScan::PATready);
}
m_NIT = 0;
if (m_ready_all & readyNIT)
{
m_NIT = new eTable<NetworkInformationSection>;
if (m_NIT->start(m_demux, eDVBNITSpec(m_networkid)))
return -1;
CONNECT(m_NIT->tableReady, eDVBScan::NITready);
}
m_BAT = 0;
if (m_ready_all & readyBAT)
{
m_BAT = new eTable<BouquetAssociationSection>;
if (m_BAT->start(m_demux, eDVBBATSpec()))
return -1;
CONNECT(m_BAT->tableReady, eDVBScan::BATready);
}
}
return 0;
}
void eDVBScan::SDTready(int err)
{
SCAN_eDebug("got sdt %d", err);
m_ready |= readySDT;
if (!err)
m_ready |= validSDT;
channelDone();
}
void eDVBScan::NITready(int err)
{
SCAN_eDebug("got nit, err %d", err);
m_ready |= readyNIT;
if (!err)
m_ready |= validNIT;
channelDone();
}
void eDVBScan::BATready(int err)
{
SCAN_eDebug("got bat");
m_ready |= readyBAT;
if (!err)
m_ready |= validBAT;
channelDone();
}
void eDVBScan::PATready(int err)
{
SCAN_eDebug("got pat");
m_ready |= readyPAT;
if (!err)
m_ready |= validPAT;
startFilter(); // for starting the SDT filter
}
void eDVBScan::PMTready(int err)
{
SCAN_eDebug("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("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;
}
if (err == -1) // timeout or removed by sdt
m_pmts_to_read.erase(m_pmt_in_progress++);
else if (m_pmt_running)
++m_pmt_in_progress;
else
{
m_pmt_in_progress = m_pmts_to_read.begin();
m_pmt_running = true;
}
if (m_pmt_in_progress != m_pmts_to_read.end())
m_PMT->start(m_demux, eDVBPMTSpec(m_pmt_in_progress->second.pmtPid, m_pmt_in_progress->first, 4000));
else
{
m_PMT = 0;
m_pmt_running = false;
channelDone();
}
}
void eDVBScan::addKnownGoodChannel(const eDVBChannelID &chid, iDVBFrontendParameters *feparm)
{
/* add it to the list of known channels. */
if (chid)
m_new_channels.insert(std::pair<eDVBChannelID,ePtr<iDVBFrontendParameters> >(chid, feparm));
}
void eDVBScan::addLcnToDB(eDVBNamespace ns, eOriginalNetworkID onid, eTransportStreamID tsid, eServiceID sid, uint16_t lcn, uint32_t signal)
{
if (m_lcn_file)
{
int size = 0;
char row[40];
bool added = false;
sprintf(row, "%08x:%04x:%04x:%04x:%05d:%08d\n", ns.get(), onid.get(), tsid.get(), sid.get(), lcn, signal);
fseek(m_lcn_file, 0, SEEK_END);
size = ftell(m_lcn_file);
for (int i = 0; i < size / 39; i++)
{
char tmp[40];
fseek(m_lcn_file, i*39, SEEK_SET);
fread (tmp, 1, 39, m_lcn_file);
if (memcmp(tmp, row, 23) == 0)
{
fseek(m_lcn_file, i*39, SEEK_SET);
fwrite(row, 1, 39, m_lcn_file);
added = true;
break;
}
}
if (!added)
{
fseek(m_lcn_file, 0, SEEK_END);
fwrite(row, 1, 39, m_lcn_file);
}
}
}
void eDVBScan::addChannelToScan(iDVBFrontendParameters *feparm)
{
/* check if we don't already have that channel ... */
int type;
feparm->getSystem(type);
switch(type)
{
case iDVBFrontend::feSatellite:
{
eDVBFrontendParametersSatellite parm;
feparm->getDVBS(parm);
SCAN_eDebug("try to add %d %d %d %d %d %d",
parm.orbital_position, parm.frequency, parm.symbol_rate, parm.polarisation, parm.fec, parm.modulation);
break;
}
case iDVBFrontend::feCable:
{
eDVBFrontendParametersCable parm;
feparm->getDVBC(parm);
SCAN_eDebug("try to add %d %d %d %d",
parm.frequency, parm.symbol_rate, parm.modulation, parm.fec_inner);
break;
}
case iDVBFrontend::feTerrestrial:
{
eDVBFrontendParametersTerrestrial parm;
feparm->getDVBT(parm);
SCAN_eDebug("try to add %d %d %d %d %d %d %d %d",
parm.frequency, parm.modulation, parm.transmission_mode, parm.hierarchy,
parm.guard_interval, parm.code_rate_LP, parm.code_rate_HP, parm.bandwidth);
break;
}
}
int found_count=0;
/* ... in the list of channels to scan */
for (std::list<ePtr<iDVBFrontendParameters> >::iterator i(m_ch_toScan.begin()); i != m_ch_toScan.end();)
{
if (sameChannel(*i, feparm))
{
if (!found_count)
{
*i = feparm; // update
SCAN_eDebug("update");
}
else
{
SCAN_eDebug("remove dupe");
m_ch_toScan.erase(i++);
continue;
}
++found_count;
}
++i;
}
if (found_count > 0)
{
SCAN_eDebug("already in todo list");
return;
}
/* ... in the list of successfully scanned channels */
for (std::list<ePtr<iDVBFrontendParameters> >::const_iterator i(m_ch_scanned.begin()); i != m_ch_scanned.end(); ++i)
if (sameChannel(*i, feparm))
{
SCAN_eDebug("successfully scanned");
return;
}
/* ... in the list of unavailable channels */
for (std::list<ePtr<iDVBFrontendParameters> >::const_iterator i(m_ch_unavailable.begin()); i != m_ch_unavailable.end(); ++i)
if (sameChannel(*i, feparm, true))
{
SCAN_eDebug("scanned but not available");
return;
}
/* ... on the current channel */
if (sameChannel(m_ch_current, feparm))
{
SCAN_eDebug("is current");
return;
}
SCAN_eDebug("really add");
/* otherwise, add it to the todo list. */
m_ch_toScan.push_front(feparm); // better.. then the rotor not turning wild from east to west :)
}
int eDVBScan::sameChannel(iDVBFrontendParameters *ch1, iDVBFrontendParameters *ch2, bool exact) const
{
int diff;
if (ch1->calculateDifference(ch2, diff, exact))
return 0;
if (diff < 4000) // more than 4mhz difference?
return 1;
return 0;
}
void eDVBScan::channelDone()
{
if (m_ready & validSDT && (!(m_flags & scanOnlyFree) || !m_pmt_running))
{
unsigned long hash = 0;
m_ch_current->getHash(hash);
eDVBNamespace dvbnamespace = buildNamespace(
(**m_SDT->getSections().begin()).getOriginalNetworkId(),
(**m_SDT->getSections().begin()).getTransportStreamId(),
hash);
SCAN_eDebug("SDT: ");
std::vector<ServiceDescriptionSection*>::const_iterator i;
for (i = m_SDT->getSections().begin(); i != m_SDT->getSections().end(); ++i)
processSDT(dvbnamespace, **i);
m_ready &= ~validSDT;
}
if (m_ready & validNIT)
{
int system;
std::list<ePtr<iDVBFrontendParameters> > m_ch_toScan_backup;
m_ch_current->getSystem(system);
SCAN_eDebug("dumping NIT");
if (m_flags & clearToScanOnFirstNIT)
{
m_ch_toScan_backup = m_ch_toScan;
m_ch_toScan.clear();
}
std::vector<NetworkInformationSection*>::const_iterator i;
for (i = m_NIT->getSections().begin(); i != m_NIT->getSections().end(); ++i)
{
const TransportStreamInfoList &tsinfovec = *(*i)->getTsInfo();
for (TransportStreamInfoConstIterator tsinfo(tsinfovec.begin());
tsinfo != tsinfovec.end(); ++tsinfo)
{
SCAN_eDebug("TSID: %04x ONID: %04x", (*tsinfo)->getTransportStreamId(),
(*tsinfo)->getOriginalNetworkId());
bool T2 = false;
eDVBFrontendParametersTerrestrial t2transponder;
eOriginalNetworkID onid = (*tsinfo)->getOriginalNetworkId();
eTransportStreamID tsid = (*tsinfo)->getTransportStreamId();
eDVBNamespace ns(0);
for (DescriptorConstIterator desc = (*tsinfo)->getDescriptors()->begin();
desc != (*tsinfo)->getDescriptors()->end(); ++desc)
{
switch ((*desc)->getTag())
{
case CABLE_DELIVERY_SYSTEM_DESCRIPTOR:
{
if (system != iDVBFrontend::feCable)
break; // when current locked transponder is no cable transponder ignore this descriptor
CableDeliverySystemDescriptor &d = (CableDeliverySystemDescriptor&)**desc;
ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
eDVBFrontendParametersCable cable;
cable.set(d);
feparm->setDVBC(cable);
addChannelToScan(feparm);
break;
}
case TERRESTRIAL_DELIVERY_SYSTEM_DESCRIPTOR:
{
if (system != iDVBFrontend::feTerrestrial)
break; // when current locked transponder is no terrestrial transponder ignore this descriptor
TerrestrialDeliverySystemDescriptor &d = (TerrestrialDeliverySystemDescriptor&)**desc;
ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
eDVBFrontendParametersTerrestrial terr;
terr.set(d);
feparm->setDVBT(terr);
unsigned long hash=0;
feparm->getHash(hash);
ns = buildNamespace(onid, tsid, hash);
addChannelToScan(feparm);
break;
}
case LOGICAL_CHANNEL_DESCRIPTOR:
{
// we handle it later
break;
}
case S2_SATELLITE_DELIVERY_SYSTEM_DESCRIPTOR:
{
eDebug("[adenin] S2_SATELLITE_DELIVERY_SYSTEM_DESCRIPTOR found");
if (system != iDVBFrontend::feSatellite)
break; // when current locked transponder is no satellite transponder ignore this descriptor
S2SatelliteDeliverySystemDescriptor &d = (S2SatelliteDeliverySystemDescriptor&)**desc;
}
case SATELLITE_DELIVERY_SYSTEM_DESCRIPTOR:
{
if (system != iDVBFrontend::feSatellite)
break; // when current locked transponder is no satellite transponder ignore this descriptor
SatelliteDeliverySystemDescriptor &d = (SatelliteDeliverySystemDescriptor&)**desc;
if (d.getFrequency() < 10000)
break;
ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
eDVBFrontendParametersSatellite sat;
sat.set(d);
eDVBFrontendParametersSatellite p;
m_ch_current->getDVBS(p);
if ( abs(p.orbital_position - sat.orbital_position) < 5 )
sat.orbital_position = p.orbital_position;
if ( abs(abs(3600 - p.orbital_position) - sat.orbital_position) < 5 )
{
SCAN_eDebug("found transponder with incorrect west/east flag ... correct this");
sat.orbital_position = p.orbital_position;
}
feparm->setDVBS(sat);
if ( p.orbital_position != sat.orbital_position)
SCAN_eDebug("dropping this transponder, it's on another satellite.");
else
{
addChannelToScan(feparm);
}
break;
}
case EXTENSION_DESCRIPTOR:
{
if (system != iDVBFrontend::feTerrestrial)
break; // when current locked transponder is no terrestrial transponder ignore this descriptor
ExtensionDescriptor &d = (ExtensionDescriptor&)**desc;
switch (d.getExtensionTag())
{
case T2_DELIVERY_SYSTEM_DESCRIPTOR:
T2 = true;
T2DeliverySystemDescriptor &d = (T2DeliverySystemDescriptor&)**desc;
t2transponder.set(d);
for (T2CellConstIterator cell = d.getCells()->begin();
cell != d.getCells()->end(); ++cell)
{
for (T2FrequencyConstIterator freq = (*cell)->getCentreFrequencies()->begin();
freq != (*cell)->getCentreFrequencies()->end(); ++freq)
{
t2transponder.frequency = (*freq) * 10;
ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
feparm->setDVBT(t2transponder);
addChannelToScan(feparm);
}
}
}
break;
}
case FREQUENCY_LIST_DESCRIPTOR:
{
if (system != iDVBFrontend::feTerrestrial)
break; // when current locked transponder is no terrestrial transponder ignore this descriptor
if (!T2)
break;
FrequencyListDescriptor &d = (FrequencyListDescriptor&)**desc;
if (d.getCodingType() != 0x03)
break;
for (CentreFrequencyConstIterator it = d.getCentreFrequencies()->begin();
it != d.getCentreFrequencies()->end(); ++it)
{
t2transponder.frequency = (*it) * 10;
ePtr<eDVBFrontendParameters> feparm = new eDVBFrontendParameters;
feparm->setDVBT(t2transponder);
addChannelToScan(feparm);
}
break;
}
default:
SCAN_eDebug("descr<%x>", (*desc)->getTag());
break;
}
}
// we do this after the main loop because we absolutely need the namespace
for (DescriptorConstIterator desc = (*tsinfo)->getDescriptors()->begin();
desc != (*tsinfo)->getDescriptors()->end(); ++desc)
{
switch ((*desc)->getTag())
{
case LOGICAL_CHANNEL_DESCRIPTOR:
{
if (system != iDVBFrontend::feTerrestrial)
break; // when current locked transponder is no terrestrial transponder ignore this descriptor
if (ns.get() == 0)
break; // invalid namespace
int signal = 0;
ePtr<iDVBFrontend> fe;
if (!m_channel->getFrontend(fe))
signal = fe->readFrontendData(iFrontendInformation_ENUMS::signalQuality);
LogicalChannelDescriptor &d = (LogicalChannelDescriptor&)**desc;
for (LogicalChannelListConstIterator it = d.getChannelList()->begin(); it != d.getChannelList()->end(); it++)
{
LogicalChannel *ch = *it;
if (ch->getVisibleServiceFlag())
{
addLcnToDB(ns, onid, tsid, eServiceID(ch->getServiceId()), ch->getLogicalChannelNumber(), signal);
SCAN_eDebug("NAMESPACE: %08x TSID: %04x ONID: %04x SID: %04x LCN: %05d SIGNAL: %08d", ns.get(), onid.get(), tsid.get(), ch->getServiceId(), ch->getLogicalChannelNumber(), signal);
}
}
break;
}
default:
break;
}
}
}
}
/* a pitfall is to have the clearToScanOnFirstNIT-flag set, and having channels which have
no or invalid NIT. this code will not erase the toScan list unless at least one valid entry
has been found.
This is not a perfect solution, as the channel could contain a partial NIT. Life's bad.
*/
if (m_flags & clearToScanOnFirstNIT)
{
if (m_ch_toScan.empty())
{
eWarning("clearToScanOnFirstNIT was set, but NIT is invalid. Refusing to stop scan.");
m_ch_toScan = m_ch_toScan_backup;
} else
m_flags &= ~clearToScanOnFirstNIT;
}
m_ready &= ~validNIT;
}
if (m_pmt_running || (m_ready & m_ready_all) != m_ready_all)
{
if (m_abort_current_pmt)
{
m_abort_current_pmt = false;
PMTready(-1);
}
return;
}
SCAN_eDebug("channel done!");
/* if we had services on this channel, we declare
this channels as "known good". add it.
(TODO: not yet implemented)
a NIT entry could have possible overridden
our frontend data with more exact data.
(TODO: not yet implemented)
the tuning process could have lead to more
exact data than the user entered.
The channel id was probably corrected
by the data written in the SDT. this is
important, as "initial transponder lists"
usually don't have valid CHIDs (and that's
good).
These are the reasons for adding the transponder
here, and not before.
*/
int type;
if (m_ch_current->getSystem(type))
type = -1;
for (m_pmt_in_progress = m_pmts_to_read.begin(); m_pmt_in_progress != m_pmts_to_read.end();)
{
eServiceReferenceDVB ref;
ePtr<eDVBService> service = new eDVBService;
if (!m_chid_current)
{
unsigned long hash = 0;
m_ch_current->getHash(hash);
m_chid_current = eDVBChannelID(
buildNamespace(eOriginalNetworkID(0), m_pat_tsid, hash),
m_pat_tsid, eOriginalNetworkID(0));
}
if (m_pmt_in_progress->second.serviceType == 1)
SCAN_eDebug("SID %04x is VIDEO", m_pmt_in_progress->first);
else if (m_pmt_in_progress->second.serviceType == 2)
SCAN_eDebug("SID %04x is AUDIO", m_pmt_in_progress->first);
else
SCAN_eDebug("SID %04x is DATA", m_pmt_in_progress->first);
ref.set(m_chid_current);
ref.setServiceID(m_pmt_in_progress->first);
ref.setServiceType(m_pmt_in_progress->second.serviceType);
if (type != -1)
{
char sname[255];
char pname[255];
memset(pname, 0, sizeof(pname));
memset(sname, 0, sizeof(sname));
switch(type)
{
case iDVBFrontend::feSatellite:
{
eDVBFrontendParametersSatellite parm;
m_ch_current->getDVBS(parm);
snprintf(sname, 255, "%d%c SID 0x%02x",
parm.frequency/1000,
parm.polarisation ? 'V' : 'H',
m_pmt_in_progress->first);
snprintf(pname, 255, "%s %s %d%c %d.%d°%c",
parm.system ? "DVB-S2" : "DVB-S",
parm.modulation == eDVBFrontendParametersSatellite::Modulation_Auto ? "AUTO" :
eDVBFrontendParametersSatellite::Modulation_QPSK ? "QPSK" :
eDVBFrontendParametersSatellite::Modulation_8PSK ? "8PSK" :
eDVBFrontendParametersSatellite::Modulation_QAM16 ? "QAM16" :
eDVBFrontendParametersSatellite::Modulation_16APSK ? "16APSK" : "32APSK",
parm.frequency/1000,
parm.polarisation ? 'V' : 'H',
parm.orbital_position/10,
parm.orbital_position%10,
parm.orbital_position > 0 ? 'E' : 'W');
break;
}
case iDVBFrontend::feTerrestrial:
{
eDVBFrontendParametersTerrestrial parm;
m_ch_current->getDVBT(parm);
snprintf(sname, 255, "%d SID 0x%02x",
parm.frequency/1000,
m_pmt_in_progress->first);
break;