Method deferReceivePresentation

src/gui/MainWindow_ReceiveSync.cpp:1212–1255

}

void MainWindow::deferReceivePresentation(ReceivePresentationSource source,
                                          ReceivePresentationSurface surface,
                                          std::function<void()> apply,
                                          const QString& sourceId)
{
    if (!apply) {
        return;
    }

    const int delayMs = receivePresentationDelayMs(source, surface, sourceId);
    if (delayMs <= 0) {
        apply();
        return;
    }

    if (surfaceUsesOrderedVisualQueue(surface)) {
        const qint64 nowMs = QDateTime::currentMSecsSinceEpoch();
        const QString key =
            receivePresentationVisualQueueKey(source, surface, sourceId);
        qint64 dueMs = nowMs + delayMs;
        const qint64 previousDueMs =
            m_receivePresentationVisualLastDueMs.value(key, 0);
        if (previousDueMs > 0 && dueMs <= previousDueMs) {
            dueMs = previousDueMs + 1;
        }
        m_receivePresentationVisualLastDueMs.insert(key, dueMs);
        m_receivePresentationVisualQueue.enqueue(
            {.source = source,
             .surface = surface,
             .sourceId = key,
             .arrivalMs = nowMs,
             .dueMs = dueMs,
             .sequence = ++m_receivePresentationVisualSequence,
             .payload = std::move(apply)});
        m_receivePresentationVisualQueue.trimToSize(
            kReceivePresentationVisualQueueMaxItems);
        scheduleReceivePresentationVisualQueue();
        return;
    }

    QTimer::singleShot(delayMs, this, [apply = std::move(apply)]() {
        apply();
    });
}

void MainWindow::syncReceivePresentationDelaysToAudioEngine(
    bool clearVisualQueueOnAbruptDelayChange)