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#include "widget/woverviewrgb.h"
#include <QPainter>
#include "util/timer.h"
#include "util/math.h"
#include "waveform/waveform.h"
WOverviewRGB::WOverviewRGB(
const QString& group,
PlayerManager* pPlayerManager,
UserSettingsPointer pConfig,
QWidget* parent)
: WOverview(group, pPlayerManager, pConfig, parent) {
}
bool WOverviewRGB::drawNextPixmapPart() {
ScopedTimer t("WOverviewRGB::drawNextPixmapPart");
//qDebug() << "WOverview::drawNextPixmapPart()";
int currentCompletion;
ConstWaveformPointer pWaveform = getWaveform();
if (!pWaveform) {
return false;
}
const int dataSize = pWaveform->getDataSize();
if (dataSize == 0) {
return false;
}
if (m_waveformSourceImage.isNull()) {
// Waveform pixmap twice the height of the viewport to be scalable
// by total_gain
// We keep full range waveform data to scale it on paint
m_waveformSourceImage = QImage(
dataSize / 2,
static_cast<int>(2 * 255 * m_devicePixelRatio),
QImage::Format_ARGB32_Premultiplied);
m_waveformSourceImage.fill(QColor(0, 0, 0, 0).value());
}
// Always multiple of 2
const int waveformCompletion = pWaveform->getCompletion();
// Test if there is some new to draw (at least of pixel width)
const int completionIncrement = waveformCompletion - m_actualCompletion;
int visiblePixelIncrement = completionIncrement * length() / dataSize;
if (waveformCompletion < (dataSize - 2) &&
(completionIncrement < 2 || visiblePixelIncrement == 0)) {
return false;
}
const int nextCompletion = m_actualCompletion + completionIncrement;
//qDebug() << "WOverview::drawNextPixmapPart() - nextCompletion:"
// << nextCompletion
// << "m_actualCompletion:" << m_actualCompletion
// << "waveformCompletion:" << waveformCompletion
// << "completionIncrement:" << completionIncrement;
QPainter painter(&m_waveformSourceImage);
painter.translate(0.0, static_cast<double>(m_waveformSourceImage.height()) / 2.0);
QColor color;
qreal lowColor_r, lowColor_g, lowColor_b;
m_signalColors.getRgbLowColor().getRgbF(&lowColor_r, &lowColor_g, &lowColor_b);
qreal midColor_r, midColor_g, midColor_b;
m_signalColors.getRgbMidColor().getRgbF(&midColor_r, &midColor_g, &midColor_b);
qreal highColor_r, highColor_g, highColor_b;
m_signalColors.getRgbHighColor().getRgbF(&highColor_r, &highColor_g, &highColor_b);
for (currentCompletion = m_actualCompletion;
currentCompletion < nextCompletion; currentCompletion += 2) {
unsigned char left = pWaveform->getAll(currentCompletion);
unsigned char right = pWaveform->getAll(currentCompletion + 1);
// Retrieve "raw" LMH values from waveform
qreal low = static_cast<qreal>(pWaveform->getLow(currentCompletion));
qreal mid = static_cast<qreal>(pWaveform->getMid(currentCompletion));
qreal high = static_cast<qreal>(pWaveform->getHigh(currentCompletion));
// Do matrix multiplication
qreal red = low * lowColor_r + mid * midColor_r + high * highColor_r;
qreal green = low * lowColor_g + mid * midColor_g + high * highColor_g;
qreal blue = low * lowColor_b + mid * midColor_b + high * highColor_b;
// Normalize and draw
qreal max = math_max3(red, green, blue);
if (max > 0.0) {
color.setRgbF(red / max, green / max, blue / max);
painter.setPen(color);
painter.drawLine(QPointF(currentCompletion / 2, -left * m_devicePixelRatio),
QPointF(currentCompletion / 2, 0));
}
// Retrieve "raw" LMH values from waveform
low = static_cast<qreal>(pWaveform->getLow(currentCompletion + 1));
mid = static_cast<qreal>(pWaveform->getMid(currentCompletion + 1));
high = static_cast<qreal>(pWaveform->getHigh(currentCompletion + 1));
// Do matrix multiplication
red = low * lowColor_r + mid * midColor_r + high * highColor_r;
green = low * lowColor_g + mid * midColor_g + high * highColor_g;
blue = low * lowColor_b + mid * midColor_b + high * highColor_b;
// Normalize and draw
max = math_max3(red, green, blue);
if (max > 0.0) {
color.setRgbF(red / max, green / max, blue / max);
painter.setPen(color);
painter.drawLine(QPointF(currentCompletion / 2, 0),
QPointF(currentCompletion / 2, right * m_devicePixelRatio));
}
}
// Evaluate waveform ratio peak
for (currentCompletion = m_actualCompletion;
currentCompletion < nextCompletion; currentCompletion += 2) {
m_waveformPeak = math_max3(
m_waveformPeak,
static_cast<float>(pWaveform->getAll(currentCompletion)),
static_cast<float>(pWaveform->getAll(currentCompletion + 1)));
}
m_actualCompletion = nextCompletion;
m_waveformImageScaled = QImage();
m_diffGain = 0;
// Test if the complete waveform is done
if (m_actualCompletion >= dataSize - 2) {
m_pixmapDone = true;
//qDebug() << "m_waveformPeakRatio" << m_waveformPeak;
}
return true;
}
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