Loading...

XML

Word

Printable

Details

Type: Bug
Resolution: Fixed
Priority: P2: Important
Fix Version/s: 6.2.8, 6.4.3, 6.5.0, 6.6.0
Affects Version/s: 6.4.1
Component/s: Multimedia
Labels:
None

Platform/s:

Android
Commits:
f18be9c59 (dev), 749d66608 (6.5), 4f3ed53de (6.4), 2a2bc0836 (tqtc/lts-6.2)

Description

Declarative Camera is automatically activated/started when Camera is attached to CaptureSession. This is because from all the implementations of:

QPlatformMediaCaptureSession::setCamera(QPlatformCamera *camera)

..only Android platform version activates the camera automatically:

void QAndroidMediaCaptureSession::setCamera(QPlatformCamera *camera)
{
        if (camera) {
            m_captureSession->setCameraSession(m_cameraSession);
        } else {
            m_captureSession->setCameraSession(nullptr);
        }        QAndroidCamera *control = static_cast<QAndroidCamera *>(camera);
        if (m_cameraControl == control)
            return;        if (m_cameraControl)
            m_cameraControl->setCaptureSession(nullptr);        m_cameraControl = control;
        if (m_cameraControl) {
            m_cameraControl->setCaptureSession(this);
            m_cameraControl->setActive(true); // <- ?????!!!!!!
        }        emit cameraChanged();
}

This is now especially bad because it seems to be too early for latest Qt versions. It will start producing black VideoOutput and invalid frames for video sink listener.