bool PSIPTable::HasSectionNumber(void) const
{
bool has_sn = false;
switch (TableID())
{
// MPEG
case TableID::PAT:
case TableID::CAT:
case TableID::PMT:
// ATSC
case TableID::MGT:
case TableID::TVCT:
case TableID::CVCT:
case TableID::RRT:
case TableID::EIT:
case TableID::ETT:
case TableID::STT:
case TableID::DET:
case TableID::DST:
has_sn = true;
break;
}
return has_sn;
}
QString VirtualChannelTable::toStringXML(uint indent_level) const
{
QString indent_0 = xml_indent(indent_level);
QString indent_1 = xml_indent(indent_level + 1);
QString indent_2 = xml_indent(indent_level + 2);
QString section_name = QString("%1VirtualChannelSection")
.arg((TableID::TVCT == TableID()) ? "Terrestrial" : "Cable");
QString mapid;
if (TableID::CVCT == TableID())
{
uint sctemapid = (pesdata()[3]<<8) | pesdata()[4];
mapid = QString(" mapid=\"0x%1\"").arg(sctemapid,4,16,QChar('0'));
}
QString str =
QString("%1<%2 tsid=\"0x%3\" channel_count=\"%4\""
"\n%5global_descriptors_length=\"%6\"%7"
"\n%8%9>\n")
.arg(indent_0)
.arg(section_name)
.arg(TransportStreamID(),4,16,QChar('0'))
.arg(ChannelCount())
.arg(indent_1)
.arg(GlobalDescriptorsLength())
.arg(mapid)
.arg(indent_1)
.arg(PSIPTable::XMLValues(indent_level + 1));
vector<const unsigned char*> gdesc =
MPEGDescriptor::Parse(GlobalDescriptors(), GlobalDescriptorsLength());
for (uint i = 0; i < gdesc.size(); i++)
{
str += MPEGDescriptor(gdesc[i], 300)
.toStringXML(indent_level + 1) + "\n";
}
for (uint i = 0; i < ChannelCount(); i++)
str += ChannelStringXML(indent_level + 1, i) + "\n";
return str + indent_0 + QString("</%1>").arg(section_name);
}
QString VirtualChannelTable::toString(void) const
{
QString str;
str.append(QString("%1 Virtual Channel Section\n%2"
" channel_count(%3) tsid(0x%4)")
.arg((TableID::TVCT == TableID()) ? "Terrestrial":"Cable")
.arg(PSIPTable::toString())
.arg(ChannelCount())
.arg(TransportStreamID(),4,16,QChar('0')));
if (TableID::CVCT == TableID())
{
uint sctemapid = (pesdata()[3]<<8) | pesdata()[4];
str.append(QString(" mapid(0x%1)").arg(sctemapid,0,16));
}
str.append("\n");
for (uint i = 0; i < ChannelCount(); i++)
str.append(ChannelString(i));
if (0 != GlobalDescriptorsLength())
{
str.append(QString("global descriptors length(%1) ")
.arg(GlobalDescriptorsLength()));
vector<const unsigned char*> desc =
MPEGDescriptor::Parse(GlobalDescriptors(),
GlobalDescriptorsLength());
str.append(QString("count: %1\n").arg(desc.size()));
for (uint i = 0; i < desc.size(); i++)
{
str.append(QString(" %1\n")
.arg(MPEGDescriptor(desc[i]).toString()));
}
}
return str;
}
bool PSIPTable::VerifyPSIP(bool verify_crc) const
{
if (verify_crc && (CalcCRC() != CRC()))
{
LOG(VB_SIPARSER, LOG_ERR,
QString("PSIPTable: Failed CRC check 0x%1 != 0x%2 "
"for StreamID = 0x%3")
.arg(CRC(),0,16).arg(CalcCRC(),0,16).arg(StreamID(),0,16));
return false;
}
unsigned char *bufend = _fullbuffer + _allocSize;
if ((_pesdata + 2) >= bufend)
return false; // can't query length
if (psipdata() >= bufend)
return false; // data outside buffer
if (TableID::PAT == TableID())
{
uint pcnt = (SectionLength() - PSIP_OFFSET - 2) >> 2;
bool ok = (psipdata() + (pcnt << 2) + 3 < bufend);
if (!ok)
{
LOG(VB_SIPARSER, LOG_ERR,
"PSIPTable: PAT: program list extends past end of buffer");
return false;
}
if ((Length() == 0xfff) && (TableIDExtension() == 0xffff) &&
(Section() == 0xff) && (LastSection() == 0xff))
{
LOG(VB_SIPARSER, LOG_ERR, "PSIPTable: PAT: All values at maximums");
return false;
}
return true;
}
bool PSIPTable::HasCRC(void) const
{
// default is false, but gets set to true for 0x80-0xfe at the end!
bool has_crc = false;
switch (TableID())
{
// MPEG
case TableID::PAT:
case TableID::CAT:
case TableID::PMT:
has_crc = true;
break;
// case TableID::TSDT
// DVB manditory
case TableID::NIT:
case TableID::SDT:
case TableID::PF_EIT:
has_crc = true;
break;
case TableID::TDT:
has_crc = false;
break;
// DVB optional
case TableID::NITo:
case TableID::SDTo:
case TableID::BAT:
case TableID::PF_EITo:
has_crc = true;
break;
case TableID::RST:
case TableID::ST:
has_crc = false;
break;
case TableID::TOT:
has_crc = true;
break;
// case TableID::RNT:
// case TableID::CT:
// case TableID::RCT:
// case TableID::CIT:
// case TableID::MPEFEC:
case TableID::DIT:
has_crc = false;
break;
case TableID::SIT:
has_crc = true;
break;
// SCTE
case TableID::NITscte:
case TableID::NTT:
case TableID::SVCTscte:
case TableID::STTscte:
case TableID::SITscte:
has_crc = true;
break;
case TableID::ADET:
has_crc = false;
break;
// ATSC
case TableID::MGT:
case TableID::TVCT:
case TableID::CVCT:
case TableID::RRT:
case TableID::EIT:
case TableID::ETT:
case TableID::STT:
case TableID::DET:
case TableID::DST:
//case TableID::PIT:
case TableID::NRT:
case TableID::LTST:
case TableID::DCCT:
case TableID::DCCSCT:
//case TableID::SITatsc:
case TableID::AEIT:
case TableID::AETT:
case TableID::SVCT:
has_crc = true;
break;
default:
{
// DVB Longterm EIT data
if (TableID::SC_EITbeg <= TableID() &&
TableID() <= TableID::SC_EITendo)
{
has_crc = true;
}
// FIXME Dishnet Longterm EIT data, only on PID 0x300! Forces
// table_id 0x80-0xfe to true, unless handled before or after!
if (TableID::DN_EITbego <= TableID() &&
TableID() <= TableID::DN_EITendo)
{
has_crc = true;
}
// ATSC/DVB conditional access ECM/EMM, reset to false after Dishnet
if (TableID::ECM0 <= TableID() &&
TableID() <= TableID::ECMend)
{
has_crc = false;
}
}
break;
}
return has_crc;
}
