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| ****************************************************************************/ |
| #include "bbcamerazoomcontrol.h" |
| |
| #include "bbcamerasession.h" |
| |
| #include <QDebug> |
| |
| QT_BEGIN_NAMESPACE |
| |
| BbCameraZoomControl::BbCameraZoomControl(BbCameraSession *session, QObject *parent) |
| : QCameraZoomControl(parent) |
| , m_session(session) |
| , m_minimumZoomFactor(1.0) |
| , m_maximumZoomFactor(1.0) |
| , m_supportsSmoothZoom(false) |
| , m_requestedZoomFactor(1.0) |
| { |
| connect(m_session, SIGNAL(statusChanged(QCamera::Status)), this, SLOT(statusChanged(QCamera::Status))); |
| } |
| |
| qreal BbCameraZoomControl::maximumOpticalZoom() const |
| { |
| //TODO: optical zoom support not available in BB10 API yet |
| return 1.0; |
| } |
| |
| qreal BbCameraZoomControl::maximumDigitalZoom() const |
| { |
| return m_maximumZoomFactor; |
| } |
| |
| qreal BbCameraZoomControl::requestedOpticalZoom() const |
| { |
| //TODO: optical zoom support not available in BB10 API yet |
| return 1.0; |
| } |
| |
| qreal BbCameraZoomControl::requestedDigitalZoom() const |
| { |
| return currentDigitalZoom(); |
| } |
| |
| qreal BbCameraZoomControl::currentOpticalZoom() const |
| { |
| //TODO: optical zoom support not available in BB10 API yet |
| return 1.0; |
| } |
| |
| 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; |
| } |
| |
| void BbCameraZoomControl::zoomTo(qreal optical, qreal digital) |
| { |
| Q_UNUSED(optical) |
| |
| if (m_session->status() != QCamera::ActiveStatus) |
| return; |
| |
| const qreal actualZoom = qBound(m_minimumZoomFactor, digital, m_maximumZoomFactor); |
| |
| const camera_error_t result = camera_set_zoom(m_session->handle(), actualZoom, false); |
| |
| if (result != CAMERA_EOK) { |
| qWarning() << "Unable to change zoom factor:" << result; |
| return; |
| } |
| |
| if (m_requestedZoomFactor != digital) { |
| m_requestedZoomFactor = digital; |
| emit requestedDigitalZoomChanged(m_requestedZoomFactor); |
| } |
| |
| emit currentDigitalZoomChanged(actualZoom); |
| } |
| |
| void BbCameraZoomControl::statusChanged(QCamera::Status status) |
| { |
| if (status == QCamera::ActiveStatus) { |
| // retrieve information about zoom limits |
| unsigned int maximumZoomLimit = 0; |
| unsigned int minimumZoomLimit = 0; |
| bool smoothZoom = false; |
| |
| const camera_error_t result = camera_get_zoom_limits(m_session->handle(), &maximumZoomLimit, &minimumZoomLimit, &smoothZoom); |
| if (result == CAMERA_EOK) { |
| const qreal oldMaximumZoomFactor = m_maximumZoomFactor; |
| m_maximumZoomFactor = maximumZoomLimit; |
| |
| if (oldMaximumZoomFactor != m_maximumZoomFactor) |
| emit maximumDigitalZoomChanged(m_maximumZoomFactor); |
| |
| m_minimumZoomFactor = minimumZoomLimit; |
| m_supportsSmoothZoom = smoothZoom; |
| } else { |
| m_maximumZoomFactor = 1.0; |
| m_minimumZoomFactor = 1.0; |
| m_supportsSmoothZoom = false; |
| } |
| } |
| } |
| |
| QT_END_NAMESPACE |