void QAndroidCameraFocusControl::updateFocusZones(QCameraFocusZone::FocusZoneStatus status)
{
if (!m_session->camera())
return;
// create a focus zone (50x50 pixel) around the focus point
m_focusZones.clear();
if (!m_actualFocusPoint.isNull()) {
QSize viewportSize = m_session->camera()->previewSize();
if (!viewportSize.isValid())
return;
QSizeF focusSize(50.f / viewportSize.width(), 50.f / viewportSize.height());
float x = qBound(qreal(0),
m_actualFocusPoint.x() - (focusSize.width() / 2),
1.f - focusSize.width());
float y = qBound(qreal(0),
m_actualFocusPoint.y() - (focusSize.height() / 2),
1.f - focusSize.height());
QRectF area(QPointF(x, y), focusSize);
m_focusZones.append(QCameraFocusZone(area, status));
}
emit focusZonesChanged();
}
QCameraFocusZoneList CameraBinFocus::focusZones() const
{
QCameraFocusZoneList zones;
if (m_focusPointMode != QCameraFocus::FocusPointFaceDetection) {
zones.append(QCameraFocusZone(m_focusRect, m_focusZoneStatus));
#if GST_CHECK_VERSION(1,0,0)
} else foreach (const QRect &face, m_faceFocusRects) {
const QRectF normalizedRect(
face.x() / qreal(m_viewfinderResolution.width()),
face.y() / qreal(m_viewfinderResolution.height()),
face.width() / qreal(m_viewfinderResolution.width()),
face.height() / qreal(m_viewfinderResolution.height()));
zones.append(QCameraFocusZone(normalizedRect, m_focusZoneStatus));
#endif
}
return zones;
}
QCameraFocusZoneList BbCameraFocusControl::focusZones() const
{
if (m_session->state() == QCamera::UnloadedState)
return QCameraFocusZoneList();
camera_region_t regions[20];
int supported = 0;
int asked = 0;
camera_error_t result = camera_get_focus_regions(m_session->handle(), 20, &supported, &asked, regions);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve focus regions:" << result;
return QCameraFocusZoneList();
}
// retrieve width and height of viewfinder
int viewfinderWidth = 0;
int viewfinderHeight = 0;
if (m_session->captureMode() & QCamera::CaptureStillImage)
result = camera_get_photovf_property(m_session->handle(),
CAMERA_IMGPROP_WIDTH, &viewfinderWidth,
CAMERA_IMGPROP_HEIGHT, &viewfinderHeight);
else if (m_session->captureMode() & QCamera::CaptureVideo)
result = camera_get_videovf_property(m_session->handle(),
CAMERA_IMGPROP_WIDTH, &viewfinderWidth,
CAMERA_IMGPROP_HEIGHT, &viewfinderHeight);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve viewfinder size:" << result;
return QCameraFocusZoneList();
}
QCameraFocusZoneList list;
for (int i = 0; i < asked; ++i) {
const int x = regions[i].left;
const int y = regions[i].top;
const int width = regions[i].width;
const int height = regions[i].height;
QRectF rect(static_cast<float>(x)/static_cast<float>(viewfinderWidth),
static_cast<float>(y)/static_cast<float>(viewfinderHeight),
static_cast<float>(width)/static_cast<float>(viewfinderWidth),
static_cast<float>(height)/static_cast<float>(viewfinderHeight));
list << QCameraFocusZone(rect, QCameraFocusZone::Focused); //TODO: how to know if a zone is unused/selected/focused?!?
}
return list;
}
QCameraFocusZoneList CameraBinFocus::focusZones() const
{
return QCameraFocusZoneList() << QCameraFocusZone(QRectF(0.35, 0.35, 0.3, 0.3), m_focusZoneStatus);
}
QCameraFocusZoneList CameraBinFocus::focusZones() const
{
return QCameraFocusZoneList() << QCameraFocusZone(m_focusRect, m_focusZoneStatus);
}