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#include <pch.hpp>
#include "tunerSendSi.h"
#include <logger.h>
#include <boost/crc.hpp>
#include "siParsers/table.h"
SendSi::SendSi(const P2PVR::RawDataClientPrx & c) :
Tuner::IDataSender(c->ice_collocationOptimized(false))
{
}
SendSi::~SendSi()
{
}
void
SendSi::NewData(const P2PVR::Data & buf)
{
if (!IsValidSection(buf)) {
return;
}
_packetsSent += 1;
asyncs.insert(client->begin_NewData(buf));
}
bool
SendSi::IsFinished()
{
try {
for (auto c = asyncs.begin(); c != asyncs.end(); ) {
if ((*c)->isCompleted()) {
if (client->end_NewData(*c)) {
return true;
}
c = asyncs.erase(c);
}
else {
c++;
}
}
return false;
}
catch (const std::exception & ex) {
Logger()->messagebf(LOG_DEBUG, "%s: Client transmit error (%s)", __PRETTY_FUNCTION__, ex.what());
return true;
}
}
bool
SendSi::IsValidSection(const P2PVR::Data & buf)
{
auto n = buf.size();
if (n < sizeof(SiTableHeader)) {
Logger()->messagebf(LOG_WARNING, "Received data too small to be an SI table.");
return false;
}
auto * tab = (const SiTableHeader *)(&buf.front());
size_t l = sizeof(SiTableHeaderBase) + HILO(tab->section_length);
if (n < l) {
Logger()->messagebf(LOG_WARNING, "Received data shorter than its defined length.");
return false;
}
if (n > l) {
Logger()->messagebf(LOG_WARNING, "Received data longer than its defined length.");
return false;
}
if (!crc32(buf)) {
Logger()->messagebf(LOG_WARNING, "Received data is corrupted (crc32 failed).");
return false;
}
return true;
}
bool
SendSi::crc32(const P2PVR::Data & buf)
{
boost::crc_optimal<32, 0x0, 0xFFFFFFFF, 0x0, true, false> crc;
crc.process_bytes(&buf.front(), buf.size());
return crc.checksum() == 0;
}
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