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Minor optimization in audio waveform

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This commit is contained in:
Jean-Baptiste Mardelle
2025-12-04 10:41:05 +01:00
parent 3f5b1d7c2b
commit 69d6aa7795
1 changed files with 7 additions and 8 deletions
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15
src/timeline2/view/qml/timelinewaveform.cpp
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@@ -28,10 +28,14 @@ TimelineWaveform::TimelineWaveform(QQuickItem *parent)
// setMipmap(true);
// setTextureSize(QSize(1, 1));
connect(this, &TimelineWaveform::needRecompute, [this] {
if (m_normalize) {
m_normalizeFactor = static_cast<double>(std::numeric_limits<int16_t>::max()) / pCore->projectItemModel()->getAudioMaxLevel(m_binId, m_stream);
if (m_outPoint <= m_inPoint) {
// Waveform not initialized
return;
}
m_needRecompute = true;
if (m_normalize && m_normalizeFactor == 1.) {
m_normalizeFactor = static_cast<double>(std::numeric_limits<int16_t>::max()) / pCore->projectItemModel()->getAudioMaxLevel(m_binId, m_stream);
}
update();
});
connect(this, &TimelineWaveform::needRedraw, &QQuickItem::update);
@@ -103,18 +107,13 @@ void TimelineWaveform::compute()
}
const auto inPoint = static_cast<int>(m_inPoint);
auto outPoint = static_cast<int>(m_outPoint);
const auto clipLength = levels.size() / AUDIOLEVELS_POINTS_PER_FRAME / m_channels;
const auto outPoint = qMin(clipLength, static_cast<int>(m_outPoint));
if (inPoint < 0 || outPoint < 0 || outPoint <= inPoint || inPoint >= clipLength) {
return;
}
if (outPoint > clipLength) {
qWarning() << "Waveform render outPoint=" << outPoint << " is higher than clipLength=" << clipLength << ", truncating.";
outPoint = clipLength;
}
const double timescale = m_scale / std::abs(m_speed);
const int length = outPoint - inPoint;
const int inputPoints = AUDIOLEVELS_POINTS_PER_FRAME * length;