void EventInformationTable::Parse(void) const
{
_ptrs.clear();
_ptrs.push_back(const_cast<unsigned char*>(psipdata()) + 2);
for (uint i = 0; i < EventCount(); i++)
_ptrs.push_back(_ptrs[i] + 12 + TitleLength(i) + DescriptorsLength(i));
}
void MasterGuideTable::Parse(void) const
{
_ptrs.clear();
_ptrs.push_back(const_cast<unsigned char*>(psipdata()) + 3);
for (uint i = 0; i < TableCount(); i++)
_ptrs.push_back(_ptrs[i] + 11 + TableDescriptorsLength(i));
}
void VirtualChannelTable::Parse(void) const
{
_ptrs.clear();
_ptrs.push_back(const_cast<unsigned char*>(psipdata()) + 2);
for (uint i = 0; i < ChannelCount(); i++)
_ptrs.push_back(_ptrs[i] + 32 + DescriptorsLength(i));
}
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;
}
