#include "audiospectrum.h"
#include "ffttools.h"
-#include "tools/kiss_fftr.h"
+#include "kiss_fft/tools/kiss_fftr.h"
#include <QMenu>
#include <QPainter>
#include <QDebug>
#endif
+// (defined in the header file)
+#ifdef DETECT_OVERMODULATION
+#include <limits>
+#include <cmath>
+#endif
+
// 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
+#define ALPHA_MOVING_AVG 0.125
+#define MAX_OVM_COLOR 0.7
AudioSpectrum::AudioSpectrum(QWidget *parent) :
- AbstractAudioScopeWidget(true, parent),
- m_fftTools(),
- m_lastFFT(),
- m_lastFFTLock(1)
+ AbstractAudioScopeWidget(true, parent),
+ m_fftTools(),
+ m_lastFFT(),
+ m_lastFFTLock(1),
+ m_peaks()
#ifdef DEBUG_AUDIOSPEC
- ,m_timeTotal(0)
- ,m_showTotal(0)
+ ,m_timeTotal(0)
+ ,m_showTotal(0)
#endif
+ ,colorizeFactor(0)
{
ui = new Ui::AudioSpectrum_UI;
ui->setupUi(this);
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_aShowMax = new QAction(i18n("Show maximum"), this);
+ m_aShowMax->setCheckable(true);
m_menu->addSeparator();
m_menu->addAction(m_aResetHz);
m_menu->addAction(m_aTrackMouse);
+ m_menu->addAction(m_aShowMax);
m_menu->removeAction(m_aRealtime);
delete m_aResetHz;
delete m_aTrackMouse;
+ delete ui;
}
void AudioSpectrum::readConfig()
ui->windowSize->setCurrentIndex(scopeConfig.readEntry("windowSize", 0));
ui->windowFunction->setCurrentIndex(scopeConfig.readEntry("windowFunction", 0));
m_aTrackMouse->setChecked(scopeConfig.readEntry("trackMouse", true));
+ m_aShowMax->setChecked(scopeConfig.readEntry("showMax", true));
m_dBmax = scopeConfig.readEntry("dBmax", 0);
m_dBmin = scopeConfig.readEntry("dBmin", -70);
m_freqMax = scopeConfig.readEntry("freqMax", 0);
scopeConfig.writeEntry("windowSize", ui->windowSize->currentIndex());
scopeConfig.writeEntry("windowFunction", ui->windowFunction->currentIndex());
scopeConfig.writeEntry("trackMouse", m_aTrackMouse->isChecked());
+ scopeConfig.writeEntry("showMax", m_aShowMax->isChecked());
scopeConfig.writeEntry("dBmax", m_dBmax);
scopeConfig.writeEntry("dBmin", m_dBmin);
if (m_customFreq) {
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) {
+ if (
+ audioFrame.size() > 63
+ && m_innerScopeRect.width() > 0 && m_innerScopeRect.height() > 0 // <= 0 if widget is too small (resized by user)
+ ) {
if (!m_customFreq) {
m_freqMax = freq / 2;
}
QTime start = QTime::currentTime();
+#ifdef DETECT_OVERMODULATION
+ bool overmodulated = false;
+ int overmodulateCount = 0;
+
+ for (int i = 0; i < audioFrame.size(); i++) {
+ if (
+ audioFrame[i] == std::numeric_limits<int16_t>::max()
+ || audioFrame[i] == std::numeric_limits<int16_t>::min()) {
+ overmodulateCount++;
+ if (overmodulateCount > 3) {
+ overmodulated = true;
+ break;
+ }
+ }
+ }
+ if (overmodulated) {
+ colorizeFactor = 1;
+ } else {
+ if (colorizeFactor > 0) {
+ colorizeFactor -= .08;
+ if (colorizeFactor < 0) {
+ colorizeFactor = 0;
+ }
+ }
+ }
+#endif
+
+
// Determine the window size to use. It should be
// * not bigger than the number of samples actually available
// * divisible by 2
m_lastFFT = QVector<float>(fftWindow/2);
memcpy(m_lastFFT.data(), &(freqSpectrum[0]), fftWindow/2 * sizeof(float));
- uint right = ((float) m_freqMax)/(m_freq) * (m_lastFFT.size() - 1);
- dbMap = interpolatePeakPreserving(m_lastFFT, m_innerScopeRect.width(), 0, right, -120);
+ 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();
+#ifdef DEBUG_AUDIOSPEC
QTime drawTime = QTime::currentTime();
+#endif
// Draw the spectrum
QImage spectrum(m_scopeRect.size(), QImage::Format_ARGB32);
const uint h = m_innerScopeRect.height();
const uint leftDist = m_innerScopeRect.left() - m_scopeRect.left();
const uint topDist = m_innerScopeRect.top() - m_scopeRect.top();
+ QColor spectrumColor(AbstractScopeWidget::colDarkWhite);
int yMax;
+#ifdef DETECT_OVERMODULATION
+ if (colorizeFactor > 0) {
+ QColor col = AbstractScopeWidget::colHighlightDark;
+ QColor spec = spectrumColor;
+ float f = std::sin(M_PI_2 * colorizeFactor);
+ spectrumColor = QColor(
+ (int) (f * col.red() + (1-f) * spec.red()),
+ (int) (f * col.green() + (1-f) * spec.green()),
+ (int) (f * col.blue() + (1-f) * spec.blue()),
+ spec.alpha()
+ );
+ // Limit the maximum colorization for non-overmodulated frames to better
+ // recognize consecutively overmodulated frames
+ if (colorizeFactor > MAX_OVM_COLOR) {
+ colorizeFactor = MAX_OVM_COLOR;
+ }
+ }
+#endif
+
#ifdef AUDIOSPEC_LINES
QPainter davinci(&spectrum);
- davinci.setPen(AbstractScopeWidget::penThin);
+ davinci.setPen(QPen(QBrush(spectrumColor.rgba()), 1, Qt::SolidLine));
#endif
for (uint i = 0; i < w; i++) {
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));
+ spectrum.setPixel(leftDist + i, topDist + h-y-1, spectrumColor.rgba());
}
#endif
}
+ // Calculate the peak values. Use the new value if it is bigger, otherwise adapt to lower
+ // values using the Moving Average formula
+ if (m_aShowMax->isChecked()) {
+ davinci.setPen(QPen(QBrush(AbstractScopeWidget::colHighlightLight), 2));
+ if (m_peaks.size() != fftWindow/2) {
+ m_peaks = QVector<float>(m_lastFFT);
+ } else {
+ for (int i = 0; i < fftWindow/2; i++) {
+ if (m_lastFFT[i] > m_peaks[i]) {
+ m_peaks[i] = m_lastFFT[i];
+ } else {
+ m_peaks[i] = ALPHA_MOVING_AVG * m_lastFFT[i] + (1-ALPHA_MOVING_AVG) * m_peaks[i];
+ }
+ }
+ }
+ int prev = 0;
+ m_peakMap = FFTTools::interpolatePeakPreserving(m_peaks, m_innerScopeRect.width(), 0, right, -180);
+ for (uint i = 0; i < w; i++) {
+ yMax = (m_peakMap[i] - m_dBmin) / (m_dBmax-m_dBmin) * (h-1);
+ if (yMax < 0) {
+ yMax = 0;
+ } else if (yMax >= (int)h) {
+ yMax = h-1;
+ }
+
+ davinci.drawLine(leftDist + i-1, topDist + h-prev-1, leftDist + i, topDist + h-yMax-1);
+ spectrum.setPixel(leftDist + i, topDist + h-yMax-1, AbstractScopeWidget::colHighlightLight.rgba());
+ prev = yMax;
+ }
+ }
+
#ifdef DEBUG_AUDIOSPEC
m_showTotal++;
m_timeTotal += drawTime.elapsed();
{
QTime start = QTime::currentTime();
- // Minimum distance between two lines
- const uint minDistY = 30;
- const uint minDistX = 40;
- 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(AbstractScopeWidget::penLight);
-
- int y;
- for (int db = -dbDiff; db > m_dBmin; db -= dbDiff) {
- 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 (uint hz = 0; x <= rightBorder; hz += hzDiff) {
+ if (m_innerScopeRect.height() > 0 && m_innerScopeRect.width() > 0) { // May be below 0 if widget is too small
+
+ // Minimum distance between two lines
+ const uint minDistY = 30;
+ const uint minDistX = 40;
+ 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(AbstractScopeWidget::penLight);
- 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));
+ int y;
+ for (int db = -dbDiff; db > m_dBmin; db -= dbDiff) {
+ 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 (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;
+ 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));
+ }
+
+ 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.drawLine(x, topDist, x, topDist + m_innerScopeRect.height()-1);
}
}
- }
- if (m_aTrackMouse->isChecked() && m_mouseWithinWidget && mouseX < m_innerScopeRect.width()-1) {
- davinci.setPen(AbstractScopeWidget::penThin);
+ if (m_aTrackMouse->isChecked() && m_mouseWithinWidget && mouseX < m_innerScopeRect.width()-1) {
+ davinci.setPen(AbstractScopeWidget::penThin);
- x = leftDist + mouseX;
+ x = leftDist + mouseX;
- float db = 0;
- float freq = ((float) mouseX)/(m_innerScopeRect.width()-1) * m_freqMax;
- bool drawDb = false;
+ 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) * (m_lastFFT.size() - 1);
- QVector<float> dbMap = AudioSpectrum::interpolatePeakPreserving(m_lastFFT, m_innerScopeRect.width(), 0, right, -120);
-
- 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);
+ 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);
+
+ 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;
}
- } else {
- y = topDist + mouseY;
- }
- m_lastFFTLock.release();
+ m_lastFFTLock.release();
- 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());
+ 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());
+ }
- QRect textRect(
- rect.topLeft() + QPoint(12, 4),
- rect.size()
- );
+ 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))));
+ }
- 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))));
}
- }
+ emit signalHUDRenderingFinished(start.elapsed(), 1);
+ return hud;
+ } else {
+#ifdef DEBUG_AUDIOSPEC
+ qDebug() << "Widget is too small for painting inside. Size of inner scope rect is "
+ << m_innerScopeRect.width() << "x" << m_innerScopeRect.height() <<".";
+#endif
+ emit signalHUDRenderingFinished(0, 1);
+ return QImage();
+ }
- emit signalHUDRenderingFinished(start.elapsed(), 1);
- return hud;
}
QRect AudioSpectrum::scopeRect()
///// EVENTS /////
-void AudioSpectrum::handleMouseDrag(const QPoint movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers)
+void AudioSpectrum::handleMouseDrag(const QPoint &movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers)
{
if (rescaleDirection == North) {
// Nort-South direction: Adjust the dB scale
forceUpdateScope();
}
}
-
-
-const QVector<float> AudioSpectrum::interpolatePeakPreserving(const QVector<float> in, const uint targetSize, uint left, uint right, float fill)
-{
-#ifdef DEBUG_AUDIOSPEC
- QTime start = QTime::currentTime();
-#endif
-
- if (right == 0) {
- right = in.size()-1;
- }
- Q_ASSERT(targetSize > 0);
- Q_ASSERT(left < right);
-
- QVector<float> out(targetSize);
-
-
- float x;
- float x_prev = 0;
- int xi;
- uint i;
- for (i = 0; i < targetSize; i++) {
-
- // i: Target index
- // x: Interpolated source index (float!)
- // xi: floor(x)
-
- // Transform [0,targetSize-1] to [left,right]
- x = ((float) i) / (targetSize-1) * (right-left) + left;
- xi = (int) floor(x);
-
- if (x > in.size()-1) {
- // This may happen if right > in.size()-1; Fill the rest of the vector
- // with the default value now.
- break;
- }
-
-
- // Use linear interpolation in order to get smoother display
- if (i == 0 || i == targetSize-1) {
- // ... except if we are at the left or right border of the display or the spectrum
- out[i] = in[xi];
- } else {
- if (in[xi] > in[xi+1]
- && x_prev < xi) {
- // This is a hack to preserve peaks.
- // Consider f = {0, 100, 0}
- // x = {0.5, 1.5}
- // Then x is 50 both times, and the 100 peak is lost.
- // Get it back here for the first x after the peak (which is at xi).
- // (x is the first after the peak if the previous x was smaller than floor(x).)
- out[i] = in[xi];
- } else {
- out[i] = (xi+1 - x) * in[xi]
- + (x - xi) * in[xi+1];
- }
- }
- x_prev = x;
- }
- // Fill the rest of the vector if the right border exceeds the input vector.
- for (; i < targetSize; i++) {
- out[i] = fill;
- }
-
-#ifdef DEBUG_AUDIOSPEC
- qDebug() << "Interpolated " << targetSize << " nodes from " << in.size() << " input points in " << start.elapsed() << " ms";
-#endif
-
- return out;
-}
-
-
-#ifdef DEBUG_AUDIOSPEC
-#undef DEBUG_AUDIOSPEC
-#endif
-
-#undef MIN_DB_VALUE
-#undef MAX_FREQ_VALUE
-#undef MIN_FREQ_VALUE
projects / kdenlive / blobdiff