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| author | trondeau | 2009-08-10 02:07:55 +0000 |
|---|---|---|
| committer | trondeau | 2009-08-10 02:07:55 +0000 |
| commit | b1fff92b08ccb2d0aecdea56450c79a63ab3178b (patch) | |
| tree | 6b96cdf505135d16714849da0f2f5691dd8d4828 /gr-qtgui/src/lib/FrequencyDisplayPlot.cc | |
| parent | 34791dbc3c8ab646b63d8ae6e96972b20fe6fd37 (diff) | |
| download | gnuradio-b1fff92b08ccb2d0aecdea56450c79a63ab3178b.tar.gz gnuradio-b1fff92b08ccb2d0aecdea56450c79a63ab3178b.tar.bz2 gnuradio-b1fff92b08ccb2d0aecdea56450c79a63ab3178b.zip | |
Significantly improved performance of the Qt Gui sinks. This removes a number of redundant loops and memcopies by combining operations and reduces the CPU load greatly to run much more smoothly.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@11559 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gr-qtgui/src/lib/FrequencyDisplayPlot.cc')
| -rw-r--r-- | gr-qtgui/src/lib/FrequencyDisplayPlot.cc | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/gr-qtgui/src/lib/FrequencyDisplayPlot.cc b/gr-qtgui/src/lib/FrequencyDisplayPlot.cc index 154c8d234..e299157f5 100644 --- a/gr-qtgui/src/lib/FrequencyDisplayPlot.cc +++ b/gr-qtgui/src/lib/FrequencyDisplayPlot.cc @@ -76,7 +76,9 @@ public: protected: virtual QwtText trackerText( const QwtDoublePoint& p ) const { - QwtText t(QString("%1 %2, %3 dB").arg(p.x(), 0, 'f', GetFrequencyPrecision()).arg( (GetFrequencyPrecision() == 0) ? "Hz" : "kHz").arg(p.y(), 0, 'f', 2)); + QString strunits = (GetFrequencyPrecision() == 0) ? "Hz" : "kHz"; + QwtText t(QString("%1 %2, %3 dB").arg(p.x(), 0, 'f', + GetFrequencyPrecision()).arg(strunits).arg(p.y(), 0, 'f', 2)); return t; } @@ -260,10 +262,11 @@ FrequencyDisplayPlot::SetFrequencyRange(const double constStartFreq, _stopFrequency = stopFreq; _resetXAxisPoints(); + double display_units = ceil(log10(units)/2.0); setAxisScale(QwtPlot::xBottom, _startFrequency, _stopFrequency); - setAxisScaleDraw(QwtPlot::xBottom, new FreqDisplayScaleDraw(2)); + setAxisScaleDraw(QwtPlot::xBottom, new FreqDisplayScaleDraw(display_units)); setAxisTitle(QwtPlot::xBottom, QString("Frequency (%1)").arg(strunits.c_str())); - ((FreqDisplayZoomer*)_zoomer)->SetFrequencyPrecision(2); + ((FreqDisplayZoomer*)_zoomer)->SetFrequencyPrecision(display_units); // Load up the new base zoom settings _zoomer->setZoomBase(); @@ -339,6 +342,7 @@ FrequencyDisplayPlot::PlotNewData(const double* dataPoints, const int64_t numDat ClearMaxData(); ClearMinData(); } + memcpy(_dataPoints, dataPoints, numDataPoints*sizeof(double)); for(int64_t point = 0; point < numDataPoints; point++){ if(dataPoints[point] < _minFFTPoints[point]){ @@ -369,7 +373,7 @@ void FrequencyDisplayPlot::ClearMaxData() { for(int64_t number = 0; number < _numPoints; number++){ - _maxFFTPoints[number] = _maxYAxis; + _maxFFTPoints[number] = _minYAxis; } } @@ -377,7 +381,7 @@ void FrequencyDisplayPlot::ClearMinData() { for(int64_t number = 0; number < _numPoints; number++){ - _minFFTPoints[number] = _minYAxis; + _minFFTPoints[number] = _maxYAxis; } } |