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#ifndef WATERFALL_GLOBAL_DATA_CPP
#define WATERFALL_GLOBAL_DATA_CPP
#include <waterfallGlobalData.h>
WaterfallData::WaterfallData(const double minimumFrequency,
const double maximumFrequency,
const uint64_t fftPoints,
const unsigned int historyExtent)
: QwtRasterData(QwtDoubleRect(minimumFrequency /* X START */, 0 /* Y START */,
maximumFrequency - minimumFrequency /* WIDTH */,
static_cast<double>(historyExtent)/* HEIGHT */))
{
_intensityRange = QwtDoubleInterval(-200.0, 0.0);
_fftPoints = fftPoints;
_historyLength = historyExtent;
_spectrumData = new double[_fftPoints * _historyLength];
Reset();
}
WaterfallData::~WaterfallData()
{
delete[] _spectrumData;
}
void WaterfallData::Reset()
{
memset(_spectrumData, 0x0, _fftPoints*_historyLength*sizeof(double));
_numLinesToUpdate = -1;
}
void WaterfallData::Copy(const WaterfallData* rhs)
{
if((_fftPoints != rhs->GetNumFFTPoints()) ||
(boundingRect() != rhs->boundingRect()) ){
_fftPoints = rhs->GetNumFFTPoints();
setBoundingRect(rhs->boundingRect());
delete[] _spectrumData;
_spectrumData = new double[_fftPoints * _historyLength];
}
Reset();
SetSpectrumDataBuffer(rhs->GetSpectrumDataBuffer());
SetNumLinesToUpdate(rhs->GetNumLinesToUpdate());
setRange(rhs->range());
}
void WaterfallData::ResizeData(const double startFreq,
const double stopFreq,
const uint64_t fftPoints)
{
if((fftPoints != GetNumFFTPoints()) ||
(boundingRect().width() != (stopFreq - startFreq)) ||
(boundingRect().left() != startFreq)){
setBoundingRect(QwtDoubleRect(startFreq, 0, stopFreq-startFreq, boundingRect().height()));
_fftPoints = fftPoints;
delete[] _spectrumData;
_spectrumData = new double[_fftPoints * _historyLength];
}
Reset();
}
QwtRasterData *WaterfallData::copy() const
{
WaterfallData* returnData = new WaterfallData(boundingRect().left(),
boundingRect().right(),
_fftPoints, _historyLength);
returnData->Copy(this);
return returnData;
}
QwtDoubleInterval WaterfallData::range() const
{
return _intensityRange;
}
void WaterfallData::setRange(const QwtDoubleInterval& newRange)
{
_intensityRange = newRange;
}
double WaterfallData::value(double x, double y) const
{
double returnValue = 0.0;
const unsigned int intY = static_cast<unsigned int>((1.0 - (y/boundingRect().height())) *
static_cast<double>(_historyLength - 1));
const unsigned int intX = static_cast<unsigned int>((((x - boundingRect().left()) / boundingRect().width()) *
static_cast<double>(_fftPoints-1)) + 0.5);
const int location = (intY * _fftPoints) + intX;
if((location > -1) && (location < static_cast<int64_t>(_fftPoints * _historyLength))){
returnValue = _spectrumData[location];
}
return returnValue;
}
uint64_t WaterfallData::GetNumFFTPoints() const
{
return _fftPoints;
}
void WaterfallData::addFFTData(const double* fftData,
const uint64_t fftDataSize,
const int droppedFrames){
if(fftDataSize == _fftPoints){
int64_t heightOffset = _historyLength - 1 - droppedFrames;
uint64_t drawingDroppedFrames = droppedFrames;
// Any valid data rolled off the display so just fill in zeros and write new data
if(heightOffset < 0){
heightOffset = 0;
drawingDroppedFrames = static_cast<uint64_t>(_historyLength-1);
}
// Copy the old data over if any available
if(heightOffset > 0){
memmove( _spectrumData, &_spectrumData[(drawingDroppedFrames+1) * _fftPoints],
heightOffset * _fftPoints * sizeof(double)) ;
}
if(drawingDroppedFrames > 0){
// Fill in zeros data for dropped data
memset(&_spectrumData[heightOffset * _fftPoints], 0x00,
static_cast<int64_t>(drawingDroppedFrames) * _fftPoints * sizeof(double));
}
// add the new buffer
memcpy(&_spectrumData[(_historyLength - 1) * _fftPoints], fftData, _fftPoints*sizeof(double));
}
}
double* WaterfallData::GetSpectrumDataBuffer() const
{
return _spectrumData;
}
void WaterfallData::SetSpectrumDataBuffer(const double* newData)
{
memcpy(_spectrumData, newData, _fftPoints * _historyLength * sizeof(double));
}
int WaterfallData::GetNumLinesToUpdate() const
{
return _numLinesToUpdate;
}
void WaterfallData::SetNumLinesToUpdate(const int newNum)
{
_numLinesToUpdate = newNum;
}
void WaterfallData::IncrementNumLinesToUpdate()
{
_numLinesToUpdate++;
}
#endif /* WATERFALL_GLOBAL_DATA_CPP */
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