* (at your option) any later version. *
***************************************************************************/
+
+
#include "audiospectrum.h"
+#include "ffttools.h"
#include "tools/kiss_fftr.h"
#include <QMenu>
#include <QMouseEvent>
#include <iostream>
-#include <fstream>
-bool fileWritten = false;
+// (defined in the header file)
+#ifdef DEBUG_AUDIOSPEC
+#include <QDebug>
+#endif
-const QString AudioSpectrum::directions[] = {"North", "Northeast", "East", "Southeast"};
+// Draw lines instead of single pixels.
+// This is about 25 % faster, especially when enlarging the scope to e.g. 1680x1050 px.
+#define AUDIOSPEC_LINES
+
+#define MIN_DB_VALUE -120
+#define MAX_FREQ_VALUE 96000
+#define MIN_FREQ_VALUE 1000
AudioSpectrum::AudioSpectrum(QWidget *parent) :
- AbstractAudioScopeWidget(false, parent),
- m_rescaleMinDist(12),
- m_rescaleVerticalThreshold(2.0f),
- m_rescaleActive(false),
- m_rescalePropertiesLocked(false),
- m_rescaleScale(1)
+ AbstractAudioScopeWidget(true, parent),
+ m_fftTools(),
+ m_lastFFT(),
+ m_lastFFTLock(1)
+ #ifdef DEBUG_AUDIOSPEC
+ ,m_timeTotal(0)
+ ,m_showTotal(0)
+ #endif
{
ui = new Ui::AudioSpectrum_UI;
ui->setupUi(this);
- m_distance = QSize(65, 30);
- m_dBmin = -120;
- m_dBmax = 0;
- m_freqMax = 10000;
-
- m_aLin = new QAction(i18n("Linear scale"), this);
- m_aLin->setCheckable(true);
- m_aLog = new QAction(i18n("Logarithmic scale"), this);
- m_aLog->setCheckable(true);
+ m_aResetHz = new QAction(i18n("Reset maximum frequency to sampling rate"), this);
+ m_aTrackMouse = new QAction(i18n("Track mouse"), this);
+ m_aTrackMouse->setCheckable(true);
- m_agScale = new QActionGroup(this);
- m_agScale->addAction(m_aLin);
- m_agScale->addAction(m_aLog);
- m_aLockHz = new QAction(i18n("Lock maximum frequency"), this);
- m_aLockHz->setCheckable(true);
- m_aLockHz->setEnabled(false);
-
-
-// m_menu->addSeparator()->setText(i18n("Scale"));
-// m_menu->addAction(m_aLin);
-// m_menu->addAction(m_aLog);
m_menu->addSeparator();
- m_menu->addAction(m_aLockHz);
+ m_menu->addAction(m_aResetHz);
+ m_menu->addAction(m_aTrackMouse);
+ m_menu->removeAction(m_aRealtime);
ui->windowSize->addItem("256", QVariant(256));
ui->windowSize->addItem("1024", QVariant(1024));
ui->windowSize->addItem("2048", QVariant(2048));
- m_cfg = kiss_fftr_alloc(ui->windowSize->itemData(ui->windowSize->currentIndex()).toInt(), 0,0,0);
+ ui->windowFunction->addItem(i18n("Rectangular window"), FFTTools::Window_Rect);
+ ui->windowFunction->addItem(i18n("Triangular window"), FFTTools::Window_Triangle);
+ ui->windowFunction->addItem(i18n("Hamming window"), FFTTools::Window_Hamming);
bool b = true;
- b &= connect(ui->windowSize, SIGNAL(currentIndexChanged(int)), this, SLOT(slotUpdateCfg()));
+ b &= connect(m_aResetHz, SIGNAL(triggered()), this, SLOT(slotResetMaxFreq()));
+ b &= connect(ui->windowFunction, SIGNAL(currentIndexChanged(int)), this, SLOT(forceUpdate()));
+ b &= connect(this, SIGNAL(signalMousePositionChanged()), this, SLOT(forceUpdateHUD()));
Q_ASSERT(b);
+
+ // Note: These strings are used in both Spectogram and AudioSpectrum. Ideally change both (if necessary) to reduce workload on translators
+ ui->labelFFTSize->setToolTip(i18n("The maximum window size is limited by the number of samples per frame."));
+ ui->windowSize->setToolTip(i18n("A bigger window improves the accuracy at the cost of computational power."));
+ ui->windowFunction->setToolTip(i18n("The rectangular window function is good for signals with equal signal strength (narrow peak), but creates more smearing. See Window function on Wikipedia."));
+
AbstractScopeWidget::init();
}
AudioSpectrum::~AudioSpectrum()
{
- free(m_cfg);
- delete m_agScale;
- delete m_aLin;
- delete m_aLog;
- delete m_aLockHz;
+ writeConfig();
+
+ delete m_aResetHz;
+ delete m_aTrackMouse;
}
void AudioSpectrum::readConfig()
KSharedConfigPtr config = KGlobal::config();
KConfigGroup scopeConfig(config, AbstractScopeWidget::configName());
- QString scale = scopeConfig.readEntry("scale");
- if (scale == "lin") {
- m_aLin->setChecked(true);
+
+ ui->windowSize->setCurrentIndex(scopeConfig.readEntry("windowSize", 0));
+ ui->windowFunction->setCurrentIndex(scopeConfig.readEntry("windowFunction", 0));
+ m_aTrackMouse->setChecked(scopeConfig.readEntry("trackMouse", true));
+ m_dBmax = scopeConfig.readEntry("dBmax", 0);
+ m_dBmin = scopeConfig.readEntry("dBmin", -70);
+ m_freqMax = scopeConfig.readEntry("freqMax", 0);
+
+ if (m_freqMax == 0) {
+ m_customFreq = false;
+ m_freqMax = 10000;
} else {
- m_aLog->setChecked(true);
+ m_customFreq = true;
}
- m_aLockHz->setChecked(scopeConfig.readEntry("lockHz", false));
- ui->windowSize->setCurrentIndex(scopeConfig.readEntry("windowSize", 0));
-
}
void AudioSpectrum::writeConfig()
{
KSharedConfigPtr config = KGlobal::config();
KConfigGroup scopeConfig(config, AbstractScopeWidget::configName());
- QString scale;
- if (m_aLin->isChecked()) {
- scale = "lin";
+
+ scopeConfig.writeEntry("windowSize", ui->windowSize->currentIndex());
+ scopeConfig.writeEntry("windowFunction", ui->windowFunction->currentIndex());
+ scopeConfig.writeEntry("trackMouse", m_aTrackMouse->isChecked());
+ scopeConfig.writeEntry("dBmax", m_dBmax);
+ scopeConfig.writeEntry("dBmin", m_dBmin);
+ if (m_customFreq) {
+ scopeConfig.writeEntry("freqMax", m_freqMax);
} else {
- scale = "log";
+ scopeConfig.writeEntry("freqMax", 0);
}
- scopeConfig.writeEntry("scale", scale);
- scopeConfig.writeEntry("windowSize", ui->windowSize->currentIndex());
- scopeConfig.writeEntry("lockHz", m_aLockHz->isChecked());
+
scopeConfig.sync();
}
-QString AudioSpectrum::widgetName() const { return QString("audiospectrum"); }
-
+QString AudioSpectrum::widgetName() const { return QString("AudioSpectrum"); }
bool AudioSpectrum::isBackgroundDependingOnInput() const { return false; }
bool AudioSpectrum::isScopeDependingOnInput() const { return true; }
bool AudioSpectrum::isHUDDependingOnInput() const { return false; }
QImage AudioSpectrum::renderBackground(uint) { return QImage(); }
-QImage AudioSpectrum::renderAudioScope(uint, const QVector<int16_t> audioFrame, const int freq, const int num_channels, const int num_samples)
+
+QImage AudioSpectrum::renderAudioScope(uint, const QVector<int16_t> audioFrame, const int freq, const int num_channels,
+ const int num_samples, const int)
{
if (audioFrame.size() > 63) {
- m_freqMax = freq / 2;
+ if (!m_customFreq) {
+ m_freqMax = freq / 2;
+ }
QTime start = QTime::currentTime();
- bool customCfg = false;
- kiss_fftr_cfg myCfg = m_cfg;
+
+ // Determine the window size to use. It should be
+ // * not bigger than the number of samples actually available
+ // * divisible by 2
int fftWindow = ui->windowSize->itemData(ui->windowSize->currentIndex()).toInt();
if (fftWindow > num_samples) {
fftWindow = num_samples;
- customCfg = true;
}
if ((fftWindow & 1) == 1) {
fftWindow--;
- customCfg = true;
- }
- if (customCfg) {
- myCfg = kiss_fftr_alloc(fftWindow, 0,0,0);
}
- float data[fftWindow];
- float freqSpectrum[fftWindow/2];
+ // Show the window size used, for information
+ ui->labelFFTSizeNumber->setText(QVariant(fftWindow).toString());
- int16_t maxSig = 0;
- for (int i = 0; i < fftWindow; i++) {
- if (audioFrame.data()[i*num_channels] > maxSig) {
- maxSig = audioFrame.data()[i*num_channels];
- }
- }
- qDebug() << "Max audio signal is " << maxSig;
- // The resulting FFT vector is only half as long
- kiss_fft_cpx freqData[fftWindow/2];
+ // Get the spectral power distribution of the input samples,
+ // using the given window size and function
+ float freqSpectrum[fftWindow/2];
+ FFTTools::WindowType windowType = (FFTTools::WindowType) ui->windowFunction->itemData(ui->windowFunction->currentIndex()).toInt();
+ m_fftTools.fftNormalized(audioFrame, 0, num_channels, freqSpectrum, windowType, fftWindow, 0);
- // Copy the first channel's audio into a vector for the FFT display
- // (only one channel handled at the moment)
- for (int i = 0; i < fftWindow; i++) {
- // Normalize signals to [0,1] to get correct dB values later on
- data[i] = (float) audioFrame.data()[i*num_channels] / 32767.0f;
- }
- // Calculate the Fast Fourier Transform for the input data
- kiss_fftr(m_cfg, data, freqData);
+ // Store the current FFT window (for the HUD) and run the interpolation
+ // for easy pixel-based dB value access
+ QVector<float> dbMap;
+ m_lastFFTLock.acquire();
+ m_lastFFT = QVector<float>(fftWindow/2);
+ memcpy(m_lastFFT.data(), &(freqSpectrum[0]), fftWindow/2 * sizeof(float));
- float val;
- // Get the minimum and the maximum value of the Fourier transformed (for scaling)
- for (int i = 0; i < fftWindow/2; i++) {
- if (m_aLog->isChecked()) {
- // Logarithmic scale: 20 * log ( 2 * magnitude / N )
- // with N = FFT size (after FFT, 1/2 window size)
- val = 20*log(pow(pow(fabs(freqData[i].r),2) + pow(fabs(freqData[i].i),2), .5)/((float)fftWindow/2.0f))/log(10);
- } else {
- // sqrt(r² + i²)
- val = pow(pow(fabs(freqData[i].r),2) + pow(fabs(freqData[i].i),2), .5);
- }
- freqSpectrum[i] = val;
- }
+ uint right = ((float) m_freqMax)/(m_freq/2) * (m_lastFFT.size() - 1);
+ dbMap = FFTTools::interpolatePeakPreserving(m_lastFFT, m_innerScopeRect.width(), 0, right, -180);
+ m_lastFFTLock.release();
+ QTime drawTime = QTime::currentTime();
// Draw the spectrum
- QImage spectrum(scopeRect().size(), QImage::Format_ARGB32);
+ QImage spectrum(m_scopeRect.size(), QImage::Format_ARGB32);
spectrum.fill(qRgba(0,0,0,0));
- uint w = scopeRect().size().width();
- uint h = scopeRect().size().height();
- float x;
- for (uint i = 0; i < w; i++) {
+ const uint w = m_innerScopeRect.width();
+ const uint h = m_innerScopeRect.height();
+ const uint leftDist = m_innerScopeRect.left() - m_scopeRect.left();
+ const uint topDist = m_innerScopeRect.top() - m_scopeRect.top();
+ int yMax;
- x = i/((float) w) * fftWindow/2;
+#ifdef AUDIOSPEC_LINES
+ QPainter davinci(&spectrum);
+ davinci.setPen(AbstractScopeWidget::penThin);
+#endif
- // Use linear interpolation in order to get smoother display
- if (i == 0 || i == w-1) {
- val = freqSpectrum[i];
- } else {
- // Use floor(x)+1 instead of ceil(x) as floor(x) == ceil(x) is possible.
- val = (floor(x)+1 - x)*freqSpectrum[(int) floor(x)] + (x-floor(x))*freqSpectrum[(int) floor(x)+1];
+ for (uint i = 0; i < w; i++) {
+ yMax = (dbMap[i] - m_dBmin) / (m_dBmax-m_dBmin) * (h-1);
+ if (yMax < 0) {
+ yMax = 0;
+ } else if (yMax >= (int)h) {
+ yMax = h-1;
}
-
- // freqSpectrum values range from 0 to -inf as they are relative dB values.
-// qDebug() << val << "/" << (1 - (val - m_dBmax)/(m_dBmin-m_dBmax));
- for (uint y = 0; y < h*(1 - (val - m_dBmax)/(m_dBmin-m_dBmax)) && y < h; y++) {
- spectrum.setPixel(i, h-y-1, qRgba(225, 182, 255, 255));
+#ifdef AUDIOSPEC_LINES
+ davinci.drawLine(leftDist + i, topDist + h-1, leftDist + i, topDist + h-1 - yMax);
+#else
+ for (int y = 0; y < yMax && y < (int)h; y++) {
+ spectrum.setPixel(leftDist + i, topDist + h-y-1, qRgba(225, 182, 255, 255));
}
+#endif
}
- emit signalScopeRenderingFinished(start.elapsed(), 1);
-
- /*
- if (!fileWritten || true) {
- std::ofstream mFile;
- mFile.open("/tmp/freq.m");
- if (!mFile) {
- qDebug() << "Opening file failed.";
- } else {
- mFile << "val = [ ";
-
- for (int sample = 0; sample < 256; sample++) {
- mFile << data[sample] << " ";
- }
- mFile << " ];\n";
-
- mFile << "freq = [ ";
- for (int sample = 0; sample < 256; sample++) {
- mFile << freqData[sample].r << "+" << freqData[sample].i << "*i ";
- }
- mFile << " ];\n";
+#ifdef DEBUG_AUDIOSPEC
+ m_showTotal++;
+ m_timeTotal += drawTime.elapsed();
+ qDebug() << widgetName() << " took " << drawTime.elapsed() << " ms for drawing. Average: " << ((float)m_timeTotal/m_showTotal) ;
+#endif
- mFile.close();
- fileWritten = true;
- qDebug() << "File written.";
- }
- } else {
- qDebug() << "File already written.";
- }
- //*/
+ emit signalScopeRenderingFinished(start.elapsed(), 1);
- if (customCfg) {
- free(myCfg);
- }
return spectrum;
} else {
{
QTime start = QTime::currentTime();
- const QRect rect = scopeRect();
// Minimum distance between two lines
const uint minDistY = 30;
const uint minDistX = 40;
- const uint textDist = 5;
- const uint dbDiff = ceil((float)minDistY/rect.height() * (m_dBmax-m_dBmin));
-
- QImage hud(AbstractAudioScopeWidget::rect().size(), QImage::Format_ARGB32);
+ const uint textDistX = 10;
+ const uint textDistY = 25;
+ const uint topDist = m_innerScopeRect.top() - m_scopeRect.top();
+ const uint leftDist = m_innerScopeRect.left() - m_scopeRect.left();
+ const uint dbDiff = ceil((float)minDistY/m_innerScopeRect.height() * (m_dBmax-m_dBmin));
+ const int mouseX = m_mousePos.x() - m_innerScopeRect.left();
+ const int mouseY = m_mousePos.y() - m_innerScopeRect.top();
+
+ QImage hud(m_scopeRect.size(), QImage::Format_ARGB32);
hud.fill(qRgba(0,0,0,0));
QPainter davinci(&hud);
- davinci.setPen(AbstractAudioScopeWidget::penLight);
+ davinci.setPen(AbstractScopeWidget::penLight);
int y;
for (int db = -dbDiff; db > m_dBmin; db -= dbDiff) {
- y = rect.height() * ((float)db)/(m_dBmin - m_dBmax);
- davinci.drawLine(0, y, rect.width()-1, y);
- davinci.drawText(rect.width() + textDist, y + 8, i18n("%1 dB", m_dBmax + db));
+ y = topDist + m_innerScopeRect.height() * ((float)db)/(m_dBmin - m_dBmax);
+ if (y-topDist > m_innerScopeRect.height()-minDistY+10) {
+ // Abort here, there is still a line left for min dB to paint which needs some room.
+ break;
+ }
+ davinci.drawLine(leftDist, y, leftDist + m_innerScopeRect.width()-1, y);
+ davinci.drawText(leftDist + m_innerScopeRect.width() + textDistX, y + 6, i18n("%1 dB", m_dBmax + db));
}
+ davinci.drawLine(leftDist, topDist, leftDist + m_innerScopeRect.width()-1, topDist);
+ davinci.drawText(leftDist + m_innerScopeRect.width() + textDistX, topDist+6, i18n("%1 dB", m_dBmax));
+ davinci.drawLine(leftDist, topDist+m_innerScopeRect.height()-1, leftDist + m_innerScopeRect.width()-1, topDist+m_innerScopeRect.height()-1);
+ davinci.drawText(leftDist + m_innerScopeRect.width() + textDistX, topDist+m_innerScopeRect.height()+6, i18n("%1 dB", m_dBmin));
+
+ const uint hzDiff = ceil( ((float)minDistX)/m_innerScopeRect.width() * m_freqMax / 1000 ) * 1000;
+ int x = 0;
+ const int rightBorder = leftDist + m_innerScopeRect.width()-1;
+ y = topDist + m_innerScopeRect.height() + textDistY;
+ for (int hz = 0; x <= rightBorder; hz += hzDiff) {
+ davinci.setPen(AbstractScopeWidget::penLighter);
+ x = leftDist + m_innerScopeRect.width() * ((float)hz)/m_freqMax;
+
+ if (x <= rightBorder) {
+ davinci.drawLine(x, topDist, x, topDist + m_innerScopeRect.height()+6);
+ }
+ if (hz < m_freqMax && x+textDistY < leftDist + m_innerScopeRect.width()) {
+ davinci.drawText(x-4, y, QVariant(hz/1000).toString());
+ } else {
+ x = leftDist + m_innerScopeRect.width();
+ davinci.drawLine(x, topDist, x, topDist + m_innerScopeRect.height()+6);
+ davinci.drawText(x-10, y, i18n("%1 kHz").arg((double)m_freqMax/1000, 0, 'f', 1));
+ }
-
- const uint hzDiff = ceil( ((float)minDistX)/rect.width() * m_freqMax / 1000 ) * 1000;
- int x;
- for (uint hz = hzDiff; hz < m_freqMax; hz += hzDiff) {
- x = rect.width() * ((float)hz)/m_freqMax;
- davinci.drawLine(x, 0, x, rect.height()+4);
- davinci.drawText(x-4, rect.height() + 20, QVariant(hz/1000).toString());
+ if (hz > 0) {
+ // Draw finer lines between the main lines
+ davinci.setPen(AbstractScopeWidget::penLightDots);
+ for (uint dHz = 3; dHz > 0; dHz--) {
+ x = leftDist + m_innerScopeRect.width() * ((float)hz - dHz * hzDiff/4.0f)/m_freqMax;
+ if (x > rightBorder) {
+ break;
+ }
+ davinci.drawLine(x, topDist, x, topDist + m_innerScopeRect.height()-1);
+ }
+ }
}
- davinci.drawText(rect.width(), rect.height() + 20, "[kHz]");
+ if (m_aTrackMouse->isChecked() && m_mouseWithinWidget && mouseX < m_innerScopeRect.width()-1) {
+ davinci.setPen(AbstractScopeWidget::penThin);
- emit signalHUDRenderingFinished(start.elapsed(), 1);
- return hud;
-}
+ x = leftDist + mouseX;
-QRect AudioSpectrum::scopeRect() {
- return QRect(QPoint(0, 0), AbstractAudioScopeWidget::rect().size() - m_distance);
-}
+ float db = 0;
+ float freq = ((float) mouseX)/(m_innerScopeRect.width()-1) * m_freqMax;
+ bool drawDb = false;
+ m_lastFFTLock.acquire();
+ // We need to test whether the mouse is inside the widget
+ // because the position could already have changed in the meantime (-> crash)
+ if (m_lastFFT.size() > 0 && mouseX >= 0 && mouseX < m_innerScopeRect.width()) {
+ uint right = ((float) m_freqMax)/(m_freq/2) * (m_lastFFT.size() - 1);
+ QVector<float> dbMap = FFTTools::interpolatePeakPreserving(m_lastFFT, m_innerScopeRect.width(), 0, right, -120);
-void AudioSpectrum::slotUpdateCfg()
-{
- free(m_cfg);
- m_cfg = kiss_fftr_alloc(ui->windowSize->itemData(ui->windowSize->currentIndex()).toInt(), 0,0,0);
-}
+ db = dbMap[mouseX];
+ y = topDist + m_innerScopeRect.height()-1 - (dbMap[mouseX] - m_dBmin) / (m_dBmax-m_dBmin) * (m_innerScopeRect.height()-1);
+ if (y < (int)topDist + m_innerScopeRect.height()-1) {
+ drawDb = true;
+ davinci.drawLine(x, y, leftDist + m_innerScopeRect.width()-1, y);
+ }
+ } else {
+ y = topDist + mouseY;
+ }
+ m_lastFFTLock.release();
-///// EVENTS /////
+ if (y > (int)topDist + mouseY) {
+ y = topDist+ mouseY;
+ }
+ davinci.drawLine(x, y, x, topDist + m_innerScopeRect.height()-1);
+
+ if (drawDb) {
+ QPoint dist(20, -20);
+ QRect rect(
+ leftDist + mouseX + dist.x(),
+ topDist + mouseY + dist.y(),
+ 100,
+ 40
+ );
+ if (rect.right() > (int)leftDist + m_innerScopeRect.width()-1) {
+ // Mirror the rectangle at the y axis to keep it inside the widget
+ rect = QRect(
+ rect.topLeft() - QPoint(rect.width() + 2*dist.x(), 0),
+ rect.size());
+ }
-void AudioSpectrum::mouseMoveEvent(QMouseEvent *event)
-{
-// qDebug() << "Mouse moved; Modifier: " << event->modifiers() << ", xy: " << event->x() << "/" << event->y()
-// << ", Buttons: " << event->buttons();
+ QRect textRect(
+ rect.topLeft() + QPoint(12, 4),
+ rect.size()
+ );
+
+ davinci.fillRect(rect, AbstractScopeWidget::penBackground.brush());
+ davinci.setPen(AbstractScopeWidget::penLighter);
+ davinci.drawRect(rect);
+ davinci.drawText(textRect, QString(
+ i18n("%1 dB", QString("%1").arg(db, 0, 'f', 2))
+ + "\n"
+ + i18n("%1 kHz", QString("%1").arg(freq/1000, 0, 'f', 2))));
+ }
- QPoint movement = event->pos()-m_rescaleStartPoint;
+ }
- if (m_rescaleActive) {
- if (m_rescalePropertiesLocked) {
- // Direction is known, now adjust parameters
- // Reset the starting point to make the next moveEvent relative to the current one
- m_rescaleStartPoint = event->pos();
+ emit signalHUDRenderingFinished(start.elapsed(), 1);
+ return hud;
+}
+QRect AudioSpectrum::scopeRect()
+{
+ m_scopeRect = QRect(
+ QPoint(
+ 10, // Left
+ ui->verticalSpacer->geometry().top()+6 // Top
+ ),
+ AbstractAudioScopeWidget::rect().bottomRight()
+ );
+ m_innerScopeRect = QRect(
+ QPoint(
+ m_scopeRect.left()+6, // Left
+ m_scopeRect.top()+6 // Top
+ ), QPoint(
+ ui->verticalSpacer->geometry().right()-70,
+ ui->verticalSpacer->geometry().bottom()-40
+ )
+ );
+ return m_scopeRect;
+}
- if (!m_rescaleFirstRescaleDone) {
- // We have just learned the desired direction; Normalize the movement to one pixel
- // to avoid a jump by m_rescaleMinDist
+void AudioSpectrum::slotResetMaxFreq()
+{
+ m_customFreq = false;
+ forceUpdateHUD();
+ forceUpdateScope();
+}
- if (movement.x() != 0) {
- movement.setX(movement.x() / abs(movement.x()));
- }
- if (movement.y() != 0) {
- movement.setY(movement.y() / abs(movement.y()));
- }
- m_rescaleFirstRescaleDone = true;
- }
+///// EVENTS /////
- if (m_rescaleClockDirection == AudioSpectrum::North) {
- // Nort-South direction: Adjust the dB scale
+void AudioSpectrum::handleMouseDrag(const QPoint movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers)
+{
+ if (rescaleDirection == North) {
+ // Nort-South direction: Adjust the dB scale
- if ((m_rescaleModifiers & Qt::ShiftModifier) == 0) {
+ if ((rescaleModifiers & Qt::ShiftModifier) == 0) {
- // By default adjust the min dB value
- m_dBmin += movement.y();
+ // By default adjust the min dB value
+ m_dBmin += movement.y();
- } else {
+ } else {
- // Adjust max dB value if Shift is pressed.
- m_dBmax += movement.y();
+ // Adjust max dB value if Shift is pressed.
+ m_dBmax += movement.y();
- }
+ }
- // Ensure the dB values lie in [-100, 0]
- // 0 is the upper bound, everything below -70 dB is most likely noise
+ // Ensure the dB values lie in [-100, 0] (or rather [MIN_DB_VALUE, 0])
+ // 0 is the upper bound, everything below -70 dB is most likely noise
+ if (m_dBmax > 0) {
+ m_dBmax = 0;
+ }
+ if (m_dBmin < MIN_DB_VALUE) {
+ m_dBmin = MIN_DB_VALUE;
+ }
+ // Ensure there is at least 6 dB between the minimum and the maximum value;
+ // lower values hardly make sense
+ if (m_dBmax - m_dBmin < 6) {
+ if ((rescaleModifiers & Qt::ShiftModifier) == 0) {
+ // min was adjusted; Try to adjust the max value to maintain the
+ // minimum dB difference of 6 dB
+ m_dBmax = m_dBmin + 6;
if (m_dBmax > 0) {
m_dBmax = 0;
+ m_dBmin = -6;
}
- if (m_dBmin < -100) {
- m_dBmin = -100;
- }
- // Ensure there is at least 6 dB between the minimum and the maximum value;
- // lower values hardly make sense
- if (m_dBmax - m_dBmin < 6) {
- if ((m_rescaleModifiers & Qt::ShiftModifier) == 0) {
- // min was adjusted; Try to adjust the max value to maintain the
- // minimum dB difference of 6 dB
- m_dBmax = m_dBmin + 6;
- if (m_dBmax > 0) {
- m_dBmax = 0;
- m_dBmin = -6;
- }
- } else {
- // max was adjusted, adjust min
- m_dBmin = m_dBmax - 6;
- if (m_dBmin < -100) {
- m_dBmin = -100;
- m_dBmax = -100+6;
- }
- }
+ } else {
+ // max was adjusted, adjust min
+ m_dBmin = m_dBmax - 6;
+ if (m_dBmin < MIN_DB_VALUE) {
+ m_dBmin = MIN_DB_VALUE;
+ m_dBmax = MIN_DB_VALUE+6;
}
-
- forceUpdateHUD();
- forceUpdateScope();
-
}
+ }
+ forceUpdateHUD();
+ forceUpdateScope();
- } else {
- // Detect the movement direction here.
- // This algorithm relies on the aspect ratio of dy/dx (size and signum).
- if (movement.manhattanLength() > m_rescaleMinDist) {
- float diff = ((float) movement.y())/movement.x();
-
- if (abs(diff) > m_rescaleVerticalThreshold || movement.x() == 0) {
- m_rescaleClockDirection = AudioSpectrum::North;
- } else if (abs(diff) < 1/m_rescaleVerticalThreshold) {
- m_rescaleClockDirection = AudioSpectrum::East;
- } else if (diff < 0) {
- m_rescaleClockDirection = AudioSpectrum::Northeast;
- } else {
- m_rescaleClockDirection = AudioSpectrum::Southeast;
- }
-// qDebug() << "Diff is " << diff << "; chose " << directions[m_rescaleClockDirection] << " as direction";
- m_rescalePropertiesLocked = true;
- }
+ } else if (rescaleDirection == East) {
+ // East-West direction: Adjust the maximum frequency
+ m_freqMax -= 100*movement.x();
+ if (m_freqMax < MIN_FREQ_VALUE) {
+ m_freqMax = MIN_FREQ_VALUE;
}
- } else {
- AbstractAudioScopeWidget::mouseMoveEvent(event);
- }
-}
-
-void AudioSpectrum::mousePressEvent(QMouseEvent *event)
-{
- if (event->button() == Qt::LeftButton) {
- // Rescaling mode starts
- m_rescaleActive = true;
- m_rescalePropertiesLocked = false;
- m_rescaleFirstRescaleDone = false;
- m_rescaleStartPoint = event->pos();
- m_rescaleModifiers = event->modifiers();
+ if (m_freqMax > MAX_FREQ_VALUE) {
+ m_freqMax = MAX_FREQ_VALUE;
+ }
+ m_customFreq = true;
- } else {
- AbstractAudioScopeWidget::mousePressEvent(event);
+ forceUpdateHUD();
+ forceUpdateScope();
}
}
-void AudioSpectrum::mouseReleaseEvent(QMouseEvent *event)
-{
- m_rescaleActive = false;
- m_rescalePropertiesLocked = false;
- AbstractAudioScopeWidget::mouseReleaseEvent(event);
-}
+#ifdef DEBUG_AUDIOSPEC
+#undef DEBUG_AUDIOSPEC
+#endif
+
+#undef MIN_DB_VALUE
+#undef MAX_FREQ_VALUE
+#undef MIN_FREQ_VALUE
projects / kdenlive / blobdiff