bool irsdk_waitForDataReady(int timeOut, char *data)
{
#ifdef _MSC_VER
_ASSERTE(timeOut >= 0);
#endif
if(isInitialized || irsdk_startup())
{
// just to be sure, check before we sleep
if(irsdk_getNewData(data))
return true;
// sleep till signaled
WaitForSingleObject(hDataValidEvent, timeOut);
// we woke up, so check for data
if(irsdk_getNewData(data))
return true;
else
return false;
}
// sleep if error
if(timeOut > 0)
Sleep(timeOut);
return false;
}
bool irsdk_getNewData(char *data)
{
if(isInitialized || irsdk_startup())
{
#ifdef _MSC_VER
_ASSERTE(NULL != pHeader);
#endif
// if sim is not active, then no new data
if(!(pHeader->status & irsdk_stConnected))
{
lastTickCount = INT_MAX;
return false;
}
int latest = 0;
for(int i=1; i<pHeader->numBuf; i++)
if(pHeader->varBuf[latest].tickCount < pHeader->varBuf[i].tickCount)
latest = i;
// if newer than last recieved, than report new data
if(lastTickCount < pHeader->varBuf[latest].tickCount)
{
// if asked to retrieve the data
if(data)
{
// try twice to get the data out
for(int count = 0; count < 2; count++)
{
int curTickCount = pHeader->varBuf[latest].tickCount;
memcpy(data, pSharedMem + pHeader->varBuf[latest].bufOffset, pHeader->bufLen);
if(curTickCount == pHeader->varBuf[latest].tickCount)
{
lastTickCount = curTickCount;
lastValidTime = time(NULL);
return true;
}
}
// if here, the data changed out from under us.
return false;
}
else
{
lastTickCount = pHeader->varBuf[latest].tickCount;
lastValidTime = time(NULL);
return true;
}
}
// if older than last recieved, than reset, we probably disconnected
else if(lastTickCount > pHeader->varBuf[latest].tickCount)
{
lastTickCount = pHeader->varBuf[latest].tickCount;
return false;
}
// else the same, and nothing changed this tick
}
return false;
}
bool APIDataReceiver::getNewData(char *data) {
if(initialized || irsdk_startup())
{
// if sim is not active, then no new data
if(!(header->status & irsdk_stConnected))
{
lastTickCount = std::numeric_limits<int>::max();
return false;
}
int latest = 0;
for(int i = 1; i < header->numBuf; i++)
if(header->varBuf[latest].tickCount < header->varBuf[i].tickCount)
latest = i;
// if newer than last recieved, than report new data
if(lastTickCount < header->varBuf[latest].tickCount)
{
// if asked to retrieve the data
if(data)
{
// try twice to get the data out
for(int count = 0; count < 2; count++)
{
int curTickCount = header->varBuf[latest].tickCount;
memcpy(data, sharedMem + header->varBuf[latest].bufOffset, static_cast<size_t >(header->bufLen));
if(curTickCount == header->varBuf[latest].tickCount)
{
lastTickCount = curTickCount;
lastValidTime = time(nullptr);
return true;
}
}
// if here, the data changed out from under us.
return false;
}
else
{
lastTickCount = header->varBuf[latest].tickCount;
lastValidTime = time(nullptr);
return true;
}
}
// if older than last recieved, than reset, we probably disconnected
else if(lastTickCount > header->varBuf[latest].tickCount)
{
lastTickCount = header->varBuf[latest].tickCount;
return false;
}
// else the same, and nothing changed this tick
}
return false;
}
