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plotview: Hook up setFFTSize

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Mike Walters
2016-03-03 01:17:43 +00:00
parent a912406fbf
commit 8cfd3aa97b
3 changed files with 20 additions and 7 deletions
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20
plotview.cpp
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@@ -29,7 +29,6 @@
#include "grsamplebuffer.h"
#include "memory_sink.h"
#include "memory_source.h"
#include "spectrogramplot.h"
#include "traceplot.h"
PlotView::PlotView()
@@ -41,16 +40,16 @@ void PlotView::refreshSources()
{
plots.clear();
auto sp = new SpectrogramPlot(mainSampleSource);
plots.emplace_back(sp);
spectrogramPlot = new SpectrogramPlot(mainSampleSource);
plots.emplace_back(spectrogramPlot);
gr::top_block_sptr iq_tb = gr::make_top_block("multiply");
auto iq_mem_source = gr::blocks::memory_source::make(8);
auto iq_mem_sink = gr::blocks::memory_sink::make(8);
auto multiply = gr::blocks::multiply_const_cc::make(20);
if (selection) {
float centre = (selectionFreq.first + selectionFreq.second) / 2;
float cutoff = std::abs(selectionFreq.first - centre);
if (selection || true) {
float centre = -0.05; //(selectionFreq.first + selectionFreq.second) / 2;
float cutoff = 0.02; //std::abs(selectionFreq.first - centre);
auto lp_taps = gr::filter::firdes::low_pass(1.0, 1.0, cutoff, cutoff / 2);
auto filter = gr::filter::freq_xlating_fir_filter_ccf::make(1, lp_taps, centre, 1.0);
@@ -109,12 +108,19 @@ void PlotView::selectionCleared()
refreshSources();
}
void PlotView::setFFTSize(int size)
{
fftSize = size;
spectrogramPlot->setFFTSize(size);
viewport()->update();
}
void PlotView::paintEvent(QPaintEvent *event)
{
if (mainSampleSource == nullptr) return;
off_t firstSample = horizontalScrollBar()->value();
// TODO: don't hardcode width
off_t lastSample = firstSample + 10240;
off_t lastSample = firstSample + fftSize * width();
QRect rect = QRect(0, 0, width(), height());
QPainter painter(viewport());