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();
- // 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 (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 _dw = m_innerScopeRect.width();
+ int _dh = m_innerScopeRect.height();
+ int _dld = m_innerScopeRect.width() + leftDist + textDistX;
+ int _dtd = topDist+ m_innerScopeRect.height() + 6;
+ int _fw = AbstractScopeWidget::geometry().width();
+ int _fh = AbstractScopeWidget::geometry().height();
+
+ 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/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);
+ 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()
QImage Spectrogram::renderHUD(uint)
{
+ if (m_innerScopeRect.width() > 0 && m_innerScopeRect.height() > 0) {
+ QTime start = QTime::currentTime();
- 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;
- 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));
- QImage hud(m_scopeRect.size(), QImage::Format_ARGB32);
- hud.fill(qRgba(0,0,0,0));
+ QPainter davinci(&hud);
+ davinci.setPen(AbstractScopeWidget::penLight);
- 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;
- // 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());
+ 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;
+ // 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));
}
- 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());
+ // 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;
+ 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);
}
}
+ // 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 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 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);
+ // 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));
+ 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;
+ 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) {
+ if (
+ audioFrame.size() > 63
+ && m_innerScopeRect.width() > 0 && m_innerScopeRect.height() > 0
+ ) {
if (!m_customFreq) {
m_freqMax = freq / 2;
}
bool newDataAvailable = newData > 0;
- //TODO highlight data above certain limit (-6 dB)
-
#ifdef DEBUG_SPECTROGRAM
qDebug() << "New data for " << widgetName() << ": " << newDataAvailable << " (" << newData << " units)";
#endif
projects / kdenlive / commitdiff