CubicSDR/src/visual/SpectrumCanvas.cpp

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#include "SpectrumCanvas.h"
#include "wx/wxprec.h"
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#if !wxUSE_GLCANVAS
#error "OpenGL required: set wxUSE_GLCANVAS to 1 and rebuild the library"
#endif
#include "CubicSDR.h"
#include "CubicSDRDefs.h"
#include "AppFrame.h"
#include <algorithm>
#include <wx/numformatter.h>
wxBEGIN_EVENT_TABLE(SpectrumCanvas, wxGLCanvas) EVT_PAINT(SpectrumCanvas::OnPaint)
EVT_KEY_DOWN(SpectrumCanvas::OnKeyDown)
EVT_IDLE(SpectrumCanvas::OnIdle)
EVT_MOTION(SpectrumCanvas::mouseMoved)
EVT_LEFT_DOWN(SpectrumCanvas::mouseDown)
EVT_LEFT_UP(SpectrumCanvas::mouseReleased)
//EVT_RIGHT_DOWN(SpectrumCanvas::rightClick)
EVT_LEAVE_WINDOW(SpectrumCanvas::mouseLeftWindow)
EVT_MOUSEWHEEL(SpectrumCanvas::mouseWheelMoved)
wxEND_EVENT_TABLE()
SpectrumCanvas::SpectrumCanvas(wxWindow *parent, int *attribList) :
wxGLCanvas(parent, wxID_ANY, attribList, wxDefaultPosition, wxDefaultSize,
wxFULL_REPAINT_ON_RESIZE), parent(parent), frameTimer(0) {
int in_block_size = BUF_SIZE / 2;
int out_block_size = FFT_SIZE;
in = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * in_block_size);
out = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * out_block_size);
plan = fftw_plan_dft_1d(out_block_size, in, out, FFTW_FORWARD, FFTW_MEASURE);
fft_ceil_ma = fft_ceil_maa = 100.0;
fft_floor_ma = fft_floor_maa = 0.0;
glContext = new SpectrumContext(this, &wxGetApp().GetContext(this));
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timer.start();
mTracker.setTarget(this);
mTracker.setVertDragLock(true);
SetCursor(wxCURSOR_SIZEWE);
}
SpectrumCanvas::~SpectrumCanvas() {
}
void SpectrumCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
wxPaintDC dc(this);
const wxSize ClientSize = GetClientSize();
glContext->SetCurrent(*this);
glViewport(0, 0, ClientSize.x, ClientSize.y);
glContext->Draw(spectrum_points);
SwapBuffers();
}
void SpectrumCanvas::OnKeyDown(wxKeyEvent& event) {
float angle = 5.0;
unsigned int freq;
switch (event.GetKeyCode()) {
case WXK_RIGHT:
freq = wxGetApp().getFrequency();
freq += SRATE/2;
wxGetApp().setFrequency(freq);
((wxFrame*) parent)->GetStatusBar()->SetStatusText(wxString::Format(wxT("Set center frequency: %i"), freq));
break;
case WXK_LEFT:
freq = wxGetApp().getFrequency();
freq -= SRATE/2;
wxGetApp().setFrequency(freq);
((wxFrame*) parent)->GetStatusBar()->SetStatusText(wxString::Format(wxT("Set center frequency: %i"), freq));
break;
case WXK_DOWN:
break;
case WXK_UP:
break;
case WXK_SPACE:
break;
default:
event.Skip();
return;
}
}
void SpectrumCanvas::setData(std::vector<signed char> *data) {
if (data && data->size()) {
if (spectrum_points.size() < FFT_SIZE * 2) {
spectrum_points.resize(FFT_SIZE * 2);
}
for (int i = 0; i < BUF_SIZE / 2; i++) {
in[i][0] = (float) (*data)[i * 2] / 127.0f;
in[i][1] = (float) (*data)[i * 2 + 1] / 127.0f;
}
fftw_execute(plan);
double fft_ceil = 0, fft_floor = 1;
if (fft_result.size() < FFT_SIZE) {
fft_result.resize(FFT_SIZE);
fft_result_ma.resize(FFT_SIZE);
fft_result_maa.resize(FFT_SIZE);
}
int n;
for (int i = 0, iMax = FFT_SIZE / 2; i < iMax; i++) {
n = (i == 0)?1:i;
double a = out[n][0];
double b = out[n][1];
double c = sqrt(a * a + b * b);
n = (i == FFT_SIZE/2)?(FFT_SIZE/2+1):i;
double x = out[FFT_SIZE / 2 + n][0];
double y = out[FFT_SIZE / 2 + n][1];
double z = sqrt(x * x + y * y);
fft_result[i] = (z);
fft_result[FFT_SIZE / 2 + i] = (c);
}
float time_slice = (float) SRATE / (float) (BUF_SIZE / 2);
for (int i = 0, iMax = FFT_SIZE; i < iMax; i++) {
fft_result_maa[i] += (fft_result_ma[i] - fft_result_maa[i]) * 0.65;
fft_result_ma[i] += (fft_result[i] - fft_result_ma[i]) * 0.65;
if (fft_result_maa[i] > fft_ceil) {
fft_ceil = fft_result_maa[i];
}
if (fft_result_maa[i] < fft_floor) {
fft_floor = fft_result_maa[i];
}
}
fft_ceil += 1;
fft_floor -= 1;
fft_ceil_ma = fft_ceil_ma + (fft_ceil - fft_ceil_ma) * 0.01;
fft_ceil_maa = fft_ceil_maa + (fft_ceil_ma - fft_ceil_maa) * 0.01;
fft_floor_ma = fft_floor_ma + (fft_floor - fft_floor_ma) * 0.01;
fft_floor_maa = fft_floor_maa + (fft_floor_ma - fft_floor_maa) * 0.01;
// fftw_execute(plan[1]);
for (int i = 0, iMax = FFT_SIZE; i < iMax; i++) {
float v = (log10(fft_result_maa[i] - fft_floor_maa) / log10(fft_ceil_maa - fft_floor_maa));
spectrum_points[i * 2] = ((float) i / (float) iMax);
spectrum_points[i * 2 + 1] = v;
}
}
}
void SpectrumCanvas::OnIdle(wxIdleEvent &event) {
// timer.update();
// frameTimer += timer.lastUpdateSeconds();
// if (frameTimer > 1.0/30.0) {
Refresh(false);
// frameTimer = 0;
// }
}
void SpectrumCanvas::mouseMoved(wxMouseEvent& event) {
mTracker.OnMouseMoved(event);
if (mTracker.mouseDown()) {
int freqChange = mTracker.getDeltaMouseX() * SRATE;
if (freqChange != 0) {
int freq = wxGetApp().getFrequency();
freq -= freqChange;
wxGetApp().setFrequency(freq);
((wxFrame*) parent)->GetStatusBar()->SetStatusText(
wxString::Format(wxT("Set center frequency: %s"),
wxNumberFormatter::ToString((long) freq, wxNumberFormatter::Style_WithThousandsSep)));
}
}
}
void SpectrumCanvas::mouseDown(wxMouseEvent& event) {
mTracker.OnMouseDown(event);
SetCursor(wxCURSOR_CROSS);
}
void SpectrumCanvas::mouseWheelMoved(wxMouseEvent& event) {
mTracker.OnMouseWheelMoved(event);
}
void SpectrumCanvas::mouseReleased(wxMouseEvent& event) {
mTracker.OnMouseReleased(event);
SetCursor(wxCURSOR_SIZEWE);
}
void SpectrumCanvas::mouseLeftWindow(wxMouseEvent& event) {
mTracker.OnMouseLeftWindow(event);
SetCursor(wxCURSOR_SIZEWE);
}
//void SpectrumCanvas::rightClick(wxMouseEvent& event) {}
//void SpectrumCanvas::keyPressed(wxKeyEvent& event) {}
//void SpectrumCanvas::keyReleased(wxKeyEvent& event) {}