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#include "widget/woverviewhsv.h"
#include <QColor>
#include <QPainter>
#include "util/colorcomponents.h"
#include "util/math.h"
#include "util/timer.h"
#include "waveform/waveform.h"
WOverviewHSV::WOverviewHSV(
const QString& group,
PlayerManager* pPlayerManager,
UserSettingsPointer pConfig,
QWidget* parent)
: WOverview(group, pPlayerManager, pConfig, parent) {
}
bool WOverviewHSV::drawNextPixmapPart() {
ScopedTimer t("WOverviewHSV::drawNextPixmapPart");
//qDebug() << "WOverview::drawNextPixmapPart()";
int currentCompletion;
ConstWaveformPointer pWaveform = getWaveform();
if (!pWaveform) {
return false;
}
const int dataSize = pWaveform->getDataSize();
const double audioVisualRatio = pWaveform->getAudioVisualRatio();
const double trackSamples = getTrackSamples();
if (dataSize <= 0 || audioVisualRatio <= 0 || trackSamples <= 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(
static_cast<int>(trackSamples / audioVisualRatio / 2) + 1,
2 * 255,
QImage::Format_ARGB32_Premultiplied);
m_waveformSourceImage.fill(QColor(0, 0, 0, 0).value());
if (dataSize / 2 != m_waveformSourceImage.width()) {
qWarning() << "Track duration has changed since last analysis"
<< m_waveformSourceImage.width() << "!=" << dataSize / 2;
}
}
DEBUG_ASSERT(!m_waveformSourceImage.isNull());
// 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);
// Get HSV of low color.
float h, s, v;
getHsvF(m_signalColors.getLowColor(), &h, &s, &v);
QColor color;
float lo, hi, total;
unsigned char maxLow[2] = {0, 0};
unsigned char maxHigh[2] = {0, 0};
unsigned char maxMid[2] = {0, 0};
unsigned char maxAll[2] = {0, 0};
for (currentCompletion = m_actualCompletion;
currentCompletion < nextCompletion; currentCompletion += 2) {
maxAll[0] = pWaveform->getAll(currentCompletion);
maxAll[1] = pWaveform->getAll(currentCompletion+1);
if (maxAll[0] || maxAll[1]) {
maxLow[0] = pWaveform->getLow(currentCompletion);
maxLow[1] = pWaveform->getLow(currentCompletion+1);
maxMid[0] = pWaveform->getMid(currentCompletion);
maxMid[1] = pWaveform->getMid(currentCompletion+1);
maxHigh[0] = pWaveform->getHigh(currentCompletion);
maxHigh[1] = pWaveform->getHigh(currentCompletion+1);
total = (maxLow[0] + maxLow[1] + maxMid[0] + maxMid[1] +
maxHigh[0] + maxHigh[1]) *
1.2f;
// Prevent division by zero
if (total > 0) {
// Normalize low and high
// (mid not need, because it not change the color)
lo = (maxLow[0] + maxLow[1]) / total;
hi = (maxHigh[0] + maxHigh[1]) / total;
} else {
lo = hi = 0.0;
}
// Set color
color.setHsvF(h, 1.0f - hi, 1.0f - lo);
painter.setPen(color);
painter.drawLine(QPoint(currentCompletion / 2, -maxAll[0]),
QPoint(currentCompletion / 2, maxAll[1]));
}
}
// 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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