mirror of
https://github.com/miek/inspectrum.git
synced 2026-03-03 06:54:17 +01:00
131 lines
3.5 KiB
C++
131 lines
3.5 KiB
C++
/*
|
|
* Copyright (C) 2015, Mike Walters <mike@flomp.net>
|
|
*
|
|
* This file is part of inspectrum.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <QCache>
|
|
#include <QWidget>
|
|
#include "fft.h"
|
|
#include "inputsource.h"
|
|
#include "plot.h"
|
|
|
|
#include <memory>
|
|
#include <math.h>
|
|
|
|
static const double Tau = M_PI * 2.0;
|
|
|
|
class TileCacheKey;
|
|
|
|
class SpectrogramPlot : public Plot
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
SpectrogramPlot();
|
|
~SpectrogramPlot();
|
|
|
|
void paintBack(QPainter &painter, QRect &rect, range_t<off_t> sampleRange);
|
|
void paintMid(QPainter &painter, QRect &rect, range_t<off_t> sampleRange);
|
|
void paintFront(QPainter &painter, QRect &rect, range_t<off_t> sampleRange);
|
|
|
|
QSize sizeHint() const;
|
|
int getHeight();
|
|
int getStride();
|
|
off_t lineToSample(off_t line);
|
|
|
|
InputSource *inputSource = nullptr;
|
|
|
|
signals:
|
|
void cursorFrequencyChanged(QString);
|
|
void cursorTimeChanged(QString);
|
|
void deltaFrequencyChanged(QString);
|
|
void deltaTimeChanged(QString);
|
|
void needUpdate();
|
|
|
|
public slots:
|
|
void openFile(QString fileName);
|
|
void setSampleRate(int rate);
|
|
void setFFTSize(int size);
|
|
void setPowerMax(int power);
|
|
void setPowerMin(int power);
|
|
void setZoomLevel(int zoom);
|
|
void setTimeScaleEnable(int state);
|
|
void setDeltaDragEnable(int state);
|
|
void update() { emit needUpdate(); };
|
|
|
|
protected:
|
|
void paintEvent(QPaintEvent *event);
|
|
void mouseReleaseEvent(QMouseEvent * event);
|
|
void mouseMoveEvent(QMouseEvent * event);
|
|
void mousePressEvent(QMouseEvent * event);
|
|
|
|
|
|
private:
|
|
const int linesPerGraduation = 50;
|
|
const int tileSize = 65536; // This must be a multiple of the maximum FFT size
|
|
|
|
FFT *fft = nullptr;
|
|
std::unique_ptr<float[]> window;
|
|
fftwf_complex *lineBuffer = nullptr;
|
|
QCache<TileCacheKey, QPixmap> pixmapCache;
|
|
QCache<TileCacheKey, float> fftCache;
|
|
uint colormap[256];
|
|
|
|
int sampleRate;
|
|
int fftSize;
|
|
int zoomLevel;
|
|
float powerMax;
|
|
float powerMin;
|
|
bool timeScaleIsEnabled;
|
|
bool deltaDragIsEnabled;
|
|
int cursorStartX = -1, cursorStartY;
|
|
int cursorEndX, cursorEndY;
|
|
|
|
QPixmap* getPixmapTile(off_t tile);
|
|
float* getFFTTile(off_t tile);
|
|
void getLine(float *dest, off_t sample);
|
|
void paintTimeAxis(QPainter *painter, QRect rect);
|
|
void paintCursors(QPainter *painter, QRect rect);
|
|
int sampleToLine(off_t sample);
|
|
QString sampleToTime(off_t sample);
|
|
int linesPerTile();
|
|
void xyToFreqTime(int x, int y, float *freq, float *time);
|
|
};
|
|
|
|
class TileCacheKey
|
|
{
|
|
|
|
public:
|
|
TileCacheKey(int fftSize, int zoomLevel, off_t sample) {
|
|
this->fftSize = fftSize;
|
|
this->zoomLevel = zoomLevel;
|
|
this->sample = sample;
|
|
}
|
|
|
|
bool operator==(const TileCacheKey &k2) const {
|
|
return (this->fftSize == k2.fftSize) &&
|
|
(this->zoomLevel == k2.zoomLevel) &&
|
|
(this->sample == k2.sample);
|
|
}
|
|
|
|
int fftSize;
|
|
int zoomLevel;
|
|
off_t sample;
|
|
};
|