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tuner: Move Tuner intro SpectrogramPlot

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Mike Walters
2016-04-07 22:51:16 +01:00
parent ec45e0f6da
commit 9d5bf3631d
4 changed files with 74 additions and 50 deletions
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54
spectrogramplot.cpp
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@@ -23,13 +23,16 @@
#include <QElapsedTimer>
#include <QPainter>
#include <QPaintEvent>
#include <QPixmapCache>
#include <QRect>
#include <gnuradio/top_block.h>
#include <gnuradio/filter/firdes.h>
#include <cstdlib>
#include "util.h"
SpectrogramPlot::SpectrogramPlot(std::shared_ptr<SampleSource<std::complex<float>>> src) : Plot(src), inputSource(src)
SpectrogramPlot::SpectrogramPlot(std::shared_ptr<SampleSource<std::complex<float>>> src) : Plot(src), inputSource(src), tuner(this)
{
sampleRate = 8000000;
setFFTSize(512);
@@ -42,6 +45,23 @@ SpectrogramPlot::SpectrogramPlot(std::shared_ptr<SampleSource<std::complex<float
colormap[i] = QColor::fromHsvF(p * 0.83f, 1.0, 1.0 - p).rgba();
}
auto tunerFlowGraph = gr::make_top_block("tuner");
auto memSource = gr::blocks::memory_source::make(8);
auto memSink = gr::blocks::memory_sink::make(8);
tunerFilter = gr::filter::freq_xlating_fir_filter_ccf::make(1, getTunerTaps(), getTunerCentre(), 1.0);
tunerFlowGraph->connect(memSource, 0, tunerFilter, 0);
tunerFlowGraph->connect(tunerFilter, 0, memSink, 0);
tunerOutput = std::make_shared<GRSampleBuffer<std::complex<float>, std::complex<float>>>(
inputSource.get(), tunerFlowGraph, memSource, memSink
);
connect(&tuner, &Tuner::tunerMoved, this, &SpectrogramPlot::tunerMoved);
}
void SpectrogramPlot::paintFront(QPainter &painter, QRect &rect, range_t<off_t> sampleRange)
{
tuner.paintFront(painter, rect, sampleRange);
}
void SpectrogramPlot::paintMid(QPainter &painter, QRect &rect, range_t<off_t> sampleRange)
@@ -133,6 +153,27 @@ void SpectrogramPlot::getLine(float *dest, off_t sample)
}
}
float SpectrogramPlot::getTunerCentre()
{
return 0.5f - tuner.centre() / (float)fftSize;
}
std::vector<float> SpectrogramPlot::getTunerTaps()
{
float cutoff = tuner.deviation() / (float)fftSize;
return gr::filter::firdes::low_pass(1.0, 1.0, cutoff, cutoff / 2);
}
bool SpectrogramPlot::mouseEvent(QEvent::Type type, QMouseEvent event)
{
return tuner.mouseEvent(type, event);
}
std::shared_ptr<AbstractSampleSource> SpectrogramPlot::output()
{
return tunerOutput;
}
void SpectrogramPlot::setSampleRate(int rate)
{
sampleRate = rate;
@@ -168,6 +209,17 @@ void SpectrogramPlot::setZoomLevel(int zoom)
zoomLevel = zoom;
}
void SpectrogramPlot::tunerMoved()
{
tunerFilter->set_center_freq(getTunerCentre());
tunerFilter->set_taps(getTunerTaps());
// TODO: for invalidating traceplot cache, this shouldn't really go here
QPixmapCache::clear();
emit repaint();
}
int SpectrogramPlot::getHeight()
{
if (!inputSource)