/* This function calculates the average of values in cBuf */
void updateAverage( INTYPE data)
{
double tempVal = 0;
float mulFactor = 0;
INTYPE oldElement = 0;
if( !stableStream )
{
/* Add data to Buffer */
cBuf.push_back(data);
mulFactor = 1/(double)(cBuf.size());
/* If number of elements in the buffer < total buffer capacity
* Calculate the average using loops */
for(int i = 0; i < (int)cBuf.size(); i++)
{
tempVal += cBuf[i];
}
tempVal = tempVal * mulFactor;
currentAverage = tempVal;
stableStream = (cBuf.size() == cBuf.capacity());
}
else
{
/* Efficient way of calculating average in case the buffer is full
* Every calculation will update the current average value.
* To get new average:
* new_average =
* current_average +
* ( new_element - oldest_element ) * mulFactor
*
* The CircularBuffer at this point is Full
* */
oldElement = cBuf.peek_front();
/* Adding new data Element */
cBuf.push_back(data, OVERWRITE_OLD_DATA);
/* We now have a pointer to the old element in the buffer */
tempVal = currentAverage;
tempVal = tempVal + ( ( data - oldElement ) / ( cBuf.capacity() ) );
currentAverage = tempVal;
}
}
int main (int argc, const char * argv[])
{
//Create a new circular buffer for unsigned integers
CircularBuffer< UINT > buffer;
//Resize the buffer
buffer.resize( 10 );
//Add some values to the buffer so we fill it
for(UINT i=0; i<buffer.getSize(); i++){
cout << "Adding " << i << " to buffer\n";
buffer.push_back( i );
//Print the values in the buffer
cout << "Values: \t\t";
for(UINT j=0; j<buffer.getSize(); j++){
cout << buffer[j] << "\t";
}cout << endl;
//Print the raw values in the buffer
cout << "RawValues: \t\t";
for(UINT j=0; j<buffer.getSize(); j++){
cout << buffer(j) << "\t";
}cout << endl;
}
//Get all the data in the buffer as a vector
vector<UINT> data = buffer.getDataAsVector();
cout << "Data: \t\t\t";
for(UINT j=0; j<data.size(); j++){
cout << data[j] << "\t";
}
cout << endl;
return EXIT_SUCCESS;
}