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;
}
qreal BbCameraZoomControl::currentDigitalZoom() const
{
if (m_session->status() != QCamera::ActiveStatus)
return 1.0;
unsigned int zoomFactor = 0;
camera_error_t result = CAMERA_EOK;
if (m_session->captureMode() & QCamera::CaptureStillImage)
result = camera_get_photovf_property(m_session->handle(), CAMERA_IMGPROP_ZOOMFACTOR, &zoomFactor);
else if (m_session->captureMode() & QCamera::CaptureVideo)
result = camera_get_videovf_property(m_session->handle(), CAMERA_IMGPROP_ZOOMFACTOR, &zoomFactor);
if (result != CAMERA_EOK)
return 1.0;
return zoomFactor;
}
bool BbCameraFocusControl::retrieveViewfinderSize(int *width, int *height)
{
if (!width || !height)
return false;
camera_error_t result = CAMERA_EOK;
if (m_session->captureMode() & QCamera::CaptureStillImage)
result = camera_get_photovf_property(m_session->handle(),
CAMERA_IMGPROP_WIDTH, width,
CAMERA_IMGPROP_HEIGHT, height);
else if (m_session->captureMode() & QCamera::CaptureVideo)
result = camera_get_videovf_property(m_session->handle(),
CAMERA_IMGPROP_WIDTH, width,
CAMERA_IMGPROP_HEIGHT, height);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve viewfinder size:" << result;
return false;
}
return true;
}