+++ /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 <QPainter>
-#include <QMenu>
-
-#include "spectrogram.h"
-
-// Defines the number of FFT samples to store.
-// Around 4 kB for a window size of 2000. Should be at least as large as the
-// highest vertical screen resolution available for complete reconstruction.
-// Can be less as a pre-rendered image is kept in space.
-#define SPECTROGRAM_HISTORY_SIZE 1000
-
-// Uncomment for debugging
-//#define DEBUG_SPECTROGRAM
-
-#ifdef DEBUG_SPECTROGRAM
-#include <QDebug>
-#endif
-
-#define MIN_DB_VALUE -120
-#define MAX_FREQ_VALUE 96000
-#define MIN_FREQ_VALUE 1000
-
-Spectrogram::Spectrogram(QWidget *parent) :
- AbstractAudioScopeWidget(true, parent),
- m_fftTools(),
- m_fftHistory(),
- m_fftHistoryImg(),
- m_parameterChanged(false)
-{
- ui = new Ui::Spectrogram_UI;
- ui->setupUi(this);
-
-
- m_aResetHz = new QAction(i18n("Reset maximum frequency to sampling rate"), this);
- m_aGrid = new QAction(i18n("Draw grid"), this);
- m_aGrid->setCheckable(true);
- m_aTrackMouse = new QAction(i18n("Track mouse"), this);
- m_aTrackMouse->setCheckable(true);
- m_aHighlightPeaks = new QAction(i18n("Highlight peaks"), this);
- m_aHighlightPeaks->setCheckable(true);
-
-
- m_menu->addSeparator();
- m_menu->addAction(m_aResetHz);
- m_menu->addAction(m_aTrackMouse);
- m_menu->addAction(m_aGrid);
- m_menu->addAction(m_aHighlightPeaks);
- 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);
-
- // 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."));
-
- 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);
-
- AbstractScopeWidget::init();
-}
-
-Spectrogram::~Spectrogram()
-{
- writeConfig();
-
- delete m_aResetHz;
- delete m_aTrackMouse;
- delete m_aGrid;
- delete ui;
-}
-
-void Spectrogram::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_aGrid->setChecked(scopeConfig.readEntry("drawGrid", true));
- m_aHighlightPeaks->setChecked(scopeConfig.readEntry("highlightPeaks", 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 Spectrogram::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("drawGrid", m_aGrid->isChecked());
- scopeConfig.writeEntry("highlightPeaks", m_aHighlightPeaks->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 Spectrogram::widgetName() const { return QString("Spectrogram"); }
-
-QRect Spectrogram::scopeRect()
-{
- m_scopeRect = QRect(
- QPoint(
- 10, // Left
- ui->verticalSpacer->geometry().top()+6 // Top
- ),
- AbstractAudioScopeWidget::rect().bottomRight()
- );
- m_innerScopeRect = QRect(
- QPoint(
- m_scopeRect.left()+66, // Left
- m_scopeRect.top()+6 // Top
- ), QPoint(
- ui->verticalSpacer->geometry().right()-70,
- ui->verticalSpacer->geometry().bottom()-40
- )
- );
- return m_scopeRect;
-}
-
-QImage Spectrogram::renderHUD(uint)
-{
- if (m_innerScopeRect.width() > 0 && m_innerScopeRect.height() > 0) {
- QTime start = QTime::currentTime();
-
- int x, y;
- const uint minDistY = 30; // Minimum distance between two lines
- 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 int mouseX = m_mousePos.x() - m_innerScopeRect.left();
- const int mouseY = m_mousePos.y() - m_innerScopeRect.top();
- bool hideText;
-
- QImage hud(m_scopeRect.size(), QImage::Format_ARGB32);
- hud.fill(qRgba(0,0,0,0));
-
- QPainter davinci(&hud);
- davinci.setPen(AbstractScopeWidget::penLight);
-
-
- // Frame display
- if (m_aGrid->isChecked()) {
- for (int frameNumber = 0; frameNumber < m_innerScopeRect.height(); frameNumber += minDistY) {
- y = topDist + m_innerScopeRect.height()-1 - frameNumber;
- hideText = m_aTrackMouse->isChecked() && m_mouseWithinWidget && abs(y - mouseY) < (int)textDistY && mouseY < m_innerScopeRect.height()
- && mouseX < m_innerScopeRect.width() && mouseX >= 0;
-
- davinci.drawLine(leftDist, y, leftDist + m_innerScopeRect.width()-1, y);
- if (!hideText) {
- davinci.drawText(leftDist + m_innerScopeRect.width() + textDistX, y + 6, QVariant(frameNumber).toString());
- }
- }
- }
- // Draw a line through the mouse position with the correct Frame number
- if (m_aTrackMouse->isChecked() && m_mouseWithinWidget && mouseY < m_innerScopeRect.height()
- && mouseX < m_innerScopeRect.width() && mouseX >= 0) {
- davinci.setPen(AbstractScopeWidget::penLighter);
-
- x = leftDist + mouseX;
- y = topDist + mouseY - 20;
- if (y < 0) {
- y = 0;
- }
- if (y > (int)topDist + m_innerScopeRect.height()-1 - 30) {
- y = topDist + m_innerScopeRect.height()-1 - 30;
- }
- davinci.drawLine(x, topDist + mouseY, leftDist + m_innerScopeRect.width()-1, topDist + mouseY);
- davinci.drawText(leftDist + m_innerScopeRect.width() + textDistX,
- y,
- m_scopeRect.right()-m_innerScopeRect.right()-textDistX,
- 40,
- Qt::AlignLeft,
- i18n("Frame\n%1", m_innerScopeRect.height()-1-mouseY));
- }
-
- // Frequency grid
- const uint hzDiff = ceil( ((float)minDistX)/m_innerScopeRect.width() * m_freqMax / 1000 ) * 1000;
- const int rightBorder = leftDist + m_innerScopeRect.width()-1;
- x = 0;
- y = topDist + m_innerScopeRect.height() + textDistY;
- if (m_aGrid->isChecked()) {
- for (uint hz = 0; x <= rightBorder; hz += hzDiff) {
- davinci.setPen(AbstractScopeWidget::penLight);
- x = leftDist + (m_innerScopeRect.width()-1) * ((float)hz)/m_freqMax;
-
- // Hide text if it would overlap with the text drawn at the mouse position
- hideText = m_aTrackMouse->isChecked() && m_mouseWithinWidget && abs(x-(leftDist + mouseX + 20)) < (int) minDistX + 16
- && mouseX < m_innerScopeRect.width() && mouseX >= 0;
-
- if (x <= rightBorder) {
- davinci.drawLine(x, topDist, x, topDist + m_innerScopeRect.height()+6);
- }
- if (x+textDistY < leftDist + m_innerScopeRect.width()) {
- // Only draw the text label if there is still enough room for the final one at the right.
- if (!hideText) {
- davinci.drawText(x-4, y, 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);
- }
- }
- }
- // Draw the line at the very right (maximum frequency)
- x = leftDist + m_innerScopeRect.width()-1;
- hideText = m_aTrackMouse->isChecked() && m_mouseWithinWidget && abs(x-(leftDist + mouseX + 30)) < (int) minDistX
- && mouseX < m_innerScopeRect.width() && mouseX >= 0;
- davinci.drawLine(x, topDist, x, topDist + m_innerScopeRect.height()+6);
- if (!hideText) {
- davinci.drawText(x-10, y, i18n("%1 kHz").arg((double)m_freqMax/1000, 0, 'f', 1));
- }
- }
-
- // Draw a line through the mouse position with the correct frequency label
- if (m_aTrackMouse->isChecked() && m_mouseWithinWidget && mouseX < m_innerScopeRect.width() && mouseX >= 0) {
- davinci.setPen(AbstractScopeWidget::penThin);
- x = leftDist + mouseX;
- davinci.drawLine(x, topDist, x, topDist + m_innerScopeRect.height()+6);
- davinci.drawText(x-10, y, i18n("%1 kHz")
- .arg((double)(m_mousePos.x()-m_innerScopeRect.left())/m_innerScopeRect.width() * m_freqMax/1000, 0, 'f', 2));
- }
-
- // Draw the dB brightness scale
- float val;
- davinci.setPen(AbstractScopeWidget::penLighter);
- for (y = topDist; y < (int)topDist + m_innerScopeRect.height(); y++) {
- val = 1-((float)y-topDist)/(m_innerScopeRect.height()-1);
- int col = qRgba(255, 255, 255, 255.0 * val);
- for (x = leftDist-6; x >= (int)leftDist-13; x--) {
- hud.setPixel(x, y, col);
- }
- }
- const int rectWidth = leftDist-m_scopeRect.left()-22;
- const int rectHeight = 50;
- davinci.setFont(QFont(QFont().defaultFamily(), 10));
- davinci.drawText(m_scopeRect.left(), topDist, rectWidth, rectHeight, Qt::AlignRight, i18n("%1\ndB", m_dBmax));
- davinci.drawText(m_scopeRect.left(), topDist + m_innerScopeRect.height()-20, rectWidth, rectHeight, Qt::AlignRight, i18n("%1\ndB", m_dBmin));
-
-
- emit signalHUDRenderingFinished(start.elapsed(), 1);
- return hud;
- } else {
- emit signalHUDRenderingFinished(0, 1);
- return QImage();
- }
-}
-QImage Spectrogram::renderAudioScope(uint, const QVector<int16_t> audioFrame, const int freq,
- const int num_channels, const int num_samples, const int newData) {
- if (
- audioFrame.size() > 63
- && m_innerScopeRect.width() > 0 && m_innerScopeRect.height() > 0
- ) {
- if (!m_customFreq) {
- m_freqMax = freq / 2;
- }
- bool newDataAvailable = newData > 0;
-
-#ifdef DEBUG_SPECTROGRAM
- qDebug() << "New data for " << widgetName() << ": " << newDataAvailable << " (" << newData << " units)";
-#endif
-
- QTime start = QTime::currentTime();
-
- 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());
-
- if (newDataAvailable) {
-
- float freqSpectrum[fftWindow/2];
-
- // Get the spectral power distribution of the input samples,
- // using the given window size and function
- FFTTools::WindowType windowType = (FFTTools::WindowType) ui->windowFunction->itemData(ui->windowFunction->currentIndex()).toInt();
- m_fftTools.fftNormalized(audioFrame, 0, num_channels, freqSpectrum, windowType, fftWindow, 0);
-
- // This methid might be called also when a simple refresh is required.
- // In this case there is no data to append to the history. Only append new data.
- QVector<float> spectrumVector(fftWindow/2);
- memcpy(spectrumVector.data(), &freqSpectrum[0], fftWindow/2 * sizeof(float));
- m_fftHistory.prepend(spectrumVector);
- }
-#ifdef DEBUG_SPECTROGRAM
- else {
- qDebug() << widgetName() << ": Has no new data to Fourier-transform";
- }
-#endif
-
- // Limit the maximum history size to avoid wasting space
- while (m_fftHistory.size() > SPECTROGRAM_HISTORY_SIZE) {
- m_fftHistory.removeLast();
- }
-
- // Draw the spectrum
- QImage spectrum(m_scopeRect.size(), QImage::Format_ARGB32);
- spectrum.fill(qRgba(0,0,0,0));
- QPainter davinci(&spectrum);
- const uint h = m_innerScopeRect.height();
- const uint leftDist = m_innerScopeRect.left() - m_scopeRect.left();
- const uint topDist = m_innerScopeRect.top() - m_scopeRect.top();
- float val;
- uint windowSize;
- uint y;
- bool completeRedraw = true;
-
- if (m_fftHistoryImg.size() == m_scopeRect.size() && !m_parameterChanged) {
- // The size of the widget and the parameters (like min/max dB) have not changed since last time,
- // so we can re-use it, shift it by one pixel, and render the single remaining line. Usually about
- // 10 times faster for a widget height of around 400 px.
- if (newDataAvailable) {
- davinci.drawImage(0, -1, m_fftHistoryImg);
- } else {
- // spectrum = m_fftHistoryImg does NOT work, leads to segfaults (anyone knows why, please tell me)
- davinci.drawImage(0, 0, m_fftHistoryImg);
- }
- completeRedraw = false;
- }
-
- y = 0;
- if (newData || m_parameterChanged) {
- m_parameterChanged = false;
- bool peak = false;
-
- QVector<float> dbMap;
- uint right;
- for (QList<QVector<float> >::iterator it = m_fftHistory.begin(); it != m_fftHistory.end(); it++) {
-
- windowSize = (*it).size();
-
- // Interpolate the frequency data to match the pixel coordinates
- right = ((float) m_freqMax)/(m_freq/2) * (windowSize - 1);
- dbMap = FFTTools::interpolatePeakPreserving((*it), m_innerScopeRect.width(), 0, right, -180);
-
- for (int i = 0; i < dbMap.size(); i++) {
- val = dbMap[i];
- peak = val > m_dBmax;
-
- // Normalize dB value to [0 1], 1 corresponding to dbMax dB and 0 to dbMin dB
- val = (val-m_dBmax)/(m_dBmax-m_dBmin) + 1;
- if (val < 0) {
- val = 0;
- } else if (val > 1) {
- val = 1;
- }
- if (!peak || !m_aHighlightPeaks->isChecked()) {
- spectrum.setPixel(leftDist + i, topDist + h-1 - y, qRgba(255, 255, 255, val * 255));
- } else {
- spectrum.setPixel(leftDist + i, topDist + h-1 - y, AbstractScopeWidget::colHighlightDark.rgba());
- }
- }
-
- y++;
- if (y >= topDist + m_innerScopeRect.height()) {
- break;
- }
- if (!completeRedraw) {
- break;
- }
- }
- }
-
-#ifdef DEBUG_SPECTROGRAM
- qDebug() << "Rendered " << y-topDist << "lines from " << m_fftHistory.size() << " available samples in " << start.elapsed() << " ms"
- << (completeRedraw ? "" : " (re-used old image)");
- uint storedBytes = 0;
- for (QList< QVector<float> >::iterator it = m_fftHistory.begin(); it != m_fftHistory.end(); it++) {
- storedBytes += (*it).size() * sizeof((*it)[0]);
- }
- qDebug() << QString("Total storage used: %1 kB").arg((double)storedBytes/1000, 0, 'f', 2);
-#endif
-
- m_fftHistoryImg = spectrum;
-
- emit signalScopeRenderingFinished(start.elapsed(), 1);
- return spectrum;
- } else {
- emit signalScopeRenderingFinished(0, 1);
- return QImage();
- }
-}
-QImage Spectrogram::renderBackground(uint) { return QImage(); }
-
-bool Spectrogram::isHUDDependingOnInput() const { return false; }
-bool Spectrogram::isScopeDependingOnInput() const { return true; }
-bool Spectrogram::isBackgroundDependingOnInput() const { return false; }
-
-void Spectrogram::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;
- }
- }
- }
-
- m_parameterChanged = true;
- 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;
-
- m_parameterChanged = true;
- forceUpdateHUD();
- forceUpdateScope();
- }
-}
-
-
-
-void Spectrogram::slotResetMaxFreq()
-{
- m_customFreq = false;
- m_parameterChanged = true;
- forceUpdateHUD();
- forceUpdateScope();
-}
-
-void Spectrogram::resizeEvent(QResizeEvent *event)
-{
- m_parameterChanged = true;
- AbstractAudioScopeWidget::resizeEvent(event);
-}
-
-#undef SPECTROGRAM_HISTORY_SIZE
-#ifdef DEBUG_SPECTROGRAM
-#undef DEBUG_SPECTROGRAM
-#endif
projects / kdenlive / blobdiff