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ProgramAssociationTable.cpp

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ProgramAssociationTable.cpp

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// Format of the Program Association Table (PAT) is defined in
// ISO/IEC 13818-1, available here:
// http://www.ece.cmu.edu/~ece796/documents/MPEG-2_Systems_IS.doc
#include "ProgramAssociationTable.h"
#include "Util.h"
std::map<uint16_t,uint16_t> ProgramAssociationTable::pids() const {
if(!_pids.empty())
return _pids;
std::cerr << "PAT:" << std::endl;
for(uint16_t i=0; i<_dataLength; i+=4) {
std::cerr << "\t" << static_cast<int>((_data[i]<<8)+_data[i+1]) << " => " << static_cast<int>(((_data[i+2]&0b00011111)<<8)+_data[i+3]) << std::endl;
_pids.insert(std::make_pair((_data[i]<<8)+_data[i+1], ((_data[i+2]&0b00011111)<<8)+_data[i+3]));
}
return _pids;
}
uint16_t ProgramAssociationTable::pid(uint16_t programNumber) const {
if(pids().find(programNumber) != _pids.end())
return _pids[programNumber];
return 0;
}
void ProgramAssociationTable::dump(std::ostream &where, std::string const &indent) const {
Util::SaveIOState isr(where);
DVBTable::dump(where, indent);
std::map<uint16_t,uint16_t> PIDs=pids();
where << std::hex << std::setfill('0');
for(auto const &p: PIDs) {
where << indent << "Program number " << std::setw(4) << p.first << " PID " << std::setw(4) << p.second << std::endl;
}
}
std::map<uint16_t,uint16_t> ProgramAssociationTables::pids() const {
std::map<uint16_t,uint16_t> result;
for(auto const &p: *this) {
std::map<uint16_t,uint16_t> inSection = p->pids();
result.insert(inSection.begin(), inSection.end());
}
return result;
}
void ProgramAssociationTables::dump(std::ostream &where, std::string const &indent) const {
Util::SaveIOState isr(where);
std::map<uint16_t,uint16_t> PIDs=pids();
where << std::hex << std::setfill('0');
for(auto const &p: PIDs) {
where << indent << "Program number " << std::setw(4) << p.first << " PID " << std::setw(4) << p.second << std::endl;
}
}
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