+++ /dev/null
-/***************************************************************************
- * Copyright (C) 2010 by Simon Andreas Eugster (simon.eu@gmail.com) *
- * This file is part of kdenlive. See www.kdenlive.org. *
- * *
- * 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 2 of the License, or *
- * (at your option) any later version. *
- ***************************************************************************/
-
-
-
-#include "audiospectrum.h"
-#include "ffttools.h"
-#include "kiss_fft/tools/kiss_fftr.h"
-
-#include <QMenu>
-#include <QPainter>
-#include <QMouseEvent>
-
-#include <iostream>
-
-// (defined in the header file)
-#ifdef DEBUG_AUDIOSPEC
-#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),
- m_peaks()
- #ifdef DEBUG_AUDIOSPEC
- ,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);
-
-
- ui->windowSize->addItem("256", QVariant(256));
- ui->windowSize->addItem("512", QVariant(512));
- ui->windowSize->addItem("1024", QVariant(1024));
- ui->windowSize->addItem("2048", QVariant(2048));
-
- 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(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()
-{
- writeConfig();
-
- delete m_aResetHz;
- delete m_aTrackMouse;
- delete ui;
-}
-
-void AudioSpectrum::readConfig()
-{
- AbstractScopeWidget::readConfig();
-
- KSharedConfigPtr config = KGlobal::config();
- KConfigGroup scopeConfig(config, AbstractScopeWidget::configName());
-
- 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);
-
- if (m_freqMax == 0) {
- m_customFreq = false;
- m_freqMax = 10000;
- } else {
- m_customFreq = true;
- }
-}
-void AudioSpectrum::writeConfig()
-{
- KSharedConfigPtr config = KGlobal::config();
- KConfigGroup scopeConfig(config, AbstractScopeWidget::configName());
-
- 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) {
- scopeConfig.writeEntry("freqMax", m_freqMax);
- } else {
- scopeConfig.writeEntry("freqMax", 0);
- }
-
- scopeConfig.sync();
-}
-
-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, const int)
-{
- 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
- int fftWindow = ui->windowSize->itemData(ui->windowSize->currentIndex()).toInt();
- if (fftWindow > num_samples) {
- fftWindow = num_samples;
- }
- if ((fftWindow & 1) == 1) {
- fftWindow--;
- }
-
- // Show the window size used, for information
- ui->labelFFTSizeNumber->setText(QVariant(fftWindow).toString());
-
-
- // 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);
-
-
- // 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));
-
- 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);
- spectrum.fill(qRgba(0,0,0,0));
- 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();
- 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(QPen(QBrush(spectrumColor.rgba()), 1, Qt::SolidLine));
-#endif
-
- 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;
- }
-#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, 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();
- qDebug() << widgetName() << " took " << drawTime.elapsed() << " ms for drawing. Average: " << ((float)m_timeTotal/m_showTotal) ;
-#endif
-
- emit signalScopeRenderingFinished(start.elapsed(), 1);
-
-
- return spectrum;
- } else {
- emit signalScopeRenderingFinished(0, 1);
- return QImage();
- }
-}
-QImage AudioSpectrum::renderHUD(uint)
-{
- QTime start = QTime::currentTime();
-
- 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);
-
- 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 (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);
- }
- }
- }
-
- if (m_aTrackMouse->isChecked() && m_mouseWithinWidget && mouseX < m_innerScopeRect.width()-1) {
- davinci.setPen(AbstractScopeWidget::penThin);
-
- x = leftDist + mouseX;
-
- 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);
-
- 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();
-
- 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()
- );
-
- 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();
- }
-
-}
-
-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;
-}
-
-void AudioSpectrum::slotResetMaxFreq()
-{
- m_customFreq = false;
- forceUpdateHUD();
- forceUpdateScope();
-}
-
-
-///// EVENTS /////
-
-void AudioSpectrum::handleMouseDrag(const QPoint &movement, const RescaleDirection rescaleDirection, const Qt::KeyboardModifiers rescaleModifiers)
-{
- if (rescaleDirection == North) {
- // Nort-South direction: Adjust the dB scale
-
- if ((rescaleModifiers & Qt::ShiftModifier) == 0) {
-
- // By default adjust the min dB value
- m_dBmin += movement.y();
-
- } else {
-
- // Adjust max dB value if Shift is pressed.
- m_dBmax += movement.y();
-
- }
-
- // 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;
- }
- } 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();
-
- } 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;
- }
- if (m_freqMax > MAX_FREQ_VALUE) {
- m_freqMax = MAX_FREQ_VALUE;
- }
- m_customFreq = true;
-
- forceUpdateHUD();
- forceUpdateScope();
- }
-}
projects / kdenlive / blobdiff