void Update()
{
if (bufferClient.errorReturned != BufferClient.BUFFER_READ_ERROR && bufferIsConnected)
{
SamplesEventsCount count = bufferClient.wait(latestCapturedSample + 1, lastNumberOfEvents + 1, timeout);
latestNumebrOfEventsInBuffer = count.nEvents;
latestBufferSample = count.nSamples;
while (lastNumberOfEvents < latestNumebrOfEventsInBuffer)
{
bufferEvents.Add(bufferClient.getEvents(lastNumberOfEvents, lastNumberOfEvents)[0]);
lastNumberOfEvents += 1;
if (bufferEvents.Count > bufferEventsMaxCapacity)
{
bufferEvents.RemoveAt(0);
}
OnNewEventsAdded(EventArgs.Empty); //This notifies anyone who's listening that there had been an extra event added in the buffer
}
if (latestBufferSample > latestCapturedSample)
{
nSamples = latestBufferSample - latestCapturedSample;
data = bufferClient.getFloatData(latestCapturedSample, latestBufferSample - 1); //TO DO: The getFloat needs to change according to the buffers type of data
bufferTimer.addSampleToRegression(latestBufferSample); //Updates the bufferTimer with the new samples.
latestCapturedSample = latestBufferSample;
OnNewDataCaptured(EventArgs.Empty); //That notifies anyone who's listening that data have been updated in the buffer
if (newDataIn)
{
dataPacketsLost += 1;
}
else
{
newDataIn = true;
}
}
}
}
// N.B. this function is called EVERY VIDEO FRAME!..... so should be as fast as possible...
// TODO: the buffer communication should really move to be in a seperate thread!!!
void updateBuffer()
{
if (bufferClient != null && bufferConnectionInitialized)
{
//int dataTrigger=-1;
//if ( storeData ) {
// dataTrigger = latestCapturedSample+DATAUPDATEINTERVAL_SAMP;
//}
SamplesEventsCount count = null;
bufferIsConnected = bufferClient.isConnected();
if (!bufferIsConnected) // if we are not connected try to re-connect..
{
Debug.LogError("Buffer connection closed..... trying to reconnect!");
bufferClient.reconnect();
return;
}
try {
count = bufferClient.poll();
} catch { // poll failed.... why?
Debug.LogError("Poll failed.... waiting for valid response!");
return;
}
latestNumberOfEventsInBuffer = count.nEvents;
latestBufferSample = count.nSamples;
// reset if we have been re-awoken
if (latestCapturedSample < 0)
{
latestCapturedSample = latestBufferSample;
}
if (lastNumberOfEvents < 0)
{
lastNumberOfEvents = latestNumberOfEventsInBuffer;
}
if (latestBufferSample < latestCapturedSample)
{
Debug.LogError("Buffer restart detected .. skipping everything before now...");
bufferTimer.reset();
latestCapturedSample = latestBufferSample;
lastNumberOfEvents = latestNumberOfEventsInBuffer;
}
bufferTimer.addSampleToRegression(latestBufferSample); //Updates the bufferTimer with the new samples.
// Loop ot push events to the event stream
while (lastNumberOfEvents < latestNumberOfEventsInBuffer)
{
try { // Watch out can miss events if we are too slow...
bufferEvents.Add(bufferClient.getEvents(lastNumberOfEvents, lastNumberOfEvents)[0]);
} catch (IOException ex) {
}
lastNumberOfEvents += 1;
if (bufferEvents.Count > bufferEventsMaxCapacity) // Implement a ring-buffer for the events we store...
{
bufferEvents.RemoveAt(0);
}
OnNewEventsAdded(EventArgs.Empty); //This notifies anyone who's listening that there had been an extra event added in the buffer
}
lastNumberOfEvents = latestNumberOfEventsInBuffer;
// push new data into the data event stream
if (latestBufferSample > latestCapturedSample)
{
if (storeData) // if we should track and store the data
{
storedSamples = latestBufferSample - latestCapturedSample;
if (storedSamples * nChans > MAXDATASAMPLES)
{
storedSamples = MAXDATASAMPLES / nChans;
}
data = bufferClient.getFloatData(latestBufferSample - storedSamples, latestBufferSample - 1); //TO DO: The getFloat needs to change according to the buffers type of data
OnNewDataCaptured(EventArgs.Empty); //That notifies anyone who's listening that data have been updated in the buffer
if (newDataIn)
{
dataPacketsLost += 1;
}
else
{
newDataIn = true;
}
}
}
latestCapturedSample = latestBufferSample;
}
}
// N.B. this function is called EVERY VIDEO FRAME!..... so should be as fast as possible...
// TODO: the buffer communication should really move to be in a seperate thread!!!
void Update()
{
if (bufferIsConnected && bufferClient != null && bufferClient.errorReturned != BufferClient.BUFFER_READ_ERROR && bufferClient.isConnected())
{
//int dataTrigger=-1;
//if ( storeData ) {
// dataTrigger = latestCapturedSample+DATAUPDATEINTERVAL_SAMP;
//}
SamplesEventsCount count = bufferClient.poll();
latestNumberOfEventsInBuffer = count.nEvents;
latestBufferSample = count.nSamples;
// reset if we have been re-awoken
if (latestCapturedSample < 0)
{
latestCapturedSample = latestBufferSample;
}
if (lastNumberOfEvents < 0)
{
lastNumberOfEvents = latestNumberOfEventsInBuffer;
}
while (lastNumberOfEvents < latestNumberOfEventsInBuffer)
{
try { // Watch out can miss events if we are too slow...
bufferEvents.Add(bufferClient.getEvents(lastNumberOfEvents, lastNumberOfEvents)[0]);
} catch (IOException ex) {
}
lastNumberOfEvents += 1;
if (bufferEvents.Count > bufferEventsMaxCapacity) // Implement a ring-buffer for the events we store...
{
bufferEvents.RemoveAt(0);
}
OnNewEventsAdded(EventArgs.Empty); //This notifies anyone who's listening that there had been an extra event added in the buffer
}
lastNumberOfEvents = latestNumberOfEventsInBuffer;
if (latestBufferSample > latestCapturedSample)
{
if (storeData) // if we should track and store the data
{
storedSamples = latestBufferSample - latestCapturedSample;
if (storedSamples * nChans > MAXDATASAMPLES)
{
storedSamples = MAXDATASAMPLES / nChans;
}
data = bufferClient.getFloatData(latestBufferSample - storedSamples, latestBufferSample - 1); //TO DO: The getFloat needs to change according to the buffers type of data
OnNewDataCaptured(EventArgs.Empty); //That notifies anyone who's listening that data have been updated in the buffer
if (newDataIn)
{
dataPacketsLost += 1;
}
else
{
newDataIn = true;
}
}
}
else if (latestBufferSample < latestCapturedSample)
{
Debug.LogError("Buffer restart detected");
bufferTimer.reset();
}
bufferTimer.addSampleToRegression(latestBufferSample); //Updates the bufferTimer with the new samples.
latestCapturedSample = latestBufferSample;
}
}
