C++ (Cpp) gst_photography_set_aperture示例

示例#1

文件： camerabinexposure.cpp 项目： zccrs/qt-mobility

bool CameraBinExposure::setExposureParameter(ExposureParameter parameter, const QVariant& value)
{
    QVariant oldValue = exposureParameter(parameter);

    switch (parameter) {
    case QCameraExposureControl::ExposureCompensation:
        gst_photography_set_ev_compensation(m_session->photography(), value.toReal());
        break;
    case QCameraExposureControl::ISO:
        gst_photography_set_iso_speed(m_session->photography(), value.toInt());
        break;
    case QCameraExposureControl::Aperture:
        gst_photography_set_aperture(m_session->photography(), guint(value.toReal()*1000000));
        break;
    case QCameraExposureControl::ShutterSpeed:
        gst_photography_set_exposure(m_session->photography(), guint(value.toReal()*1000000));
        break;
    default:
        return false;
    }

    QVariant newValue = exposureParameter(parameter);
    if (!qFuzzyCompare(oldValue.toReal(), newValue.toReal()))
        emit exposureParameterChanged(parameter);

    return true;
}

示例#2

文件： camerabinexposure.cpp 项目： venkatarajasekhar/Qt

bool CameraBinExposure::setValue(ExposureParameter parameter, const QVariant& value)
{
    QVariant oldValue = actualValue(parameter);

    switch (parameter) {
    case QCameraExposureControl::ExposureCompensation:
        gst_photography_set_ev_compensation(m_session->photography(), value.toReal());
        break;
    case QCameraExposureControl::ISO:
        gst_photography_set_iso_speed(m_session->photography(), value.toInt());
        break;
    case QCameraExposureControl::Aperture:
        gst_photography_set_aperture(m_session->photography(), guint(value.toReal()*1000000));
        break;
    case QCameraExposureControl::ShutterSpeed:
        gst_photography_set_exposure(m_session->photography(), guint(value.toReal()*1000000));
        break;
    case QCameraExposureControl::ExposureMode:
    {
        QCameraExposure::ExposureMode mode = QCameraExposure::ExposureMode(value.toInt());
        GstSceneMode sceneMode;
        gst_photography_get_scene_mode(m_session->photography(), &sceneMode);

        switch (mode) {
        case QCameraExposure::ExposureManual:
            sceneMode = GST_PHOTOGRAPHY_SCENE_MODE_MANUAL;
            break;
        case QCameraExposure::ExposurePortrait:
            sceneMode = GST_PHOTOGRAPHY_SCENE_MODE_PORTRAIT;
            break;
        case QCameraExposure::ExposureSports:
            sceneMode = GST_PHOTOGRAPHY_SCENE_MODE_SPORT;
            break;
        case QCameraExposure::ExposureNight:
            sceneMode = GST_PHOTOGRAPHY_SCENE_MODE_NIGHT;
            break;
        case QCameraExposure::ExposureAuto:
            sceneMode = GST_PHOTOGRAPHY_SCENE_MODE_AUTO;
            break;
        default:
            break;
        }

        gst_photography_set_scene_mode(m_session->photography(), sceneMode);
        break;
    }
    default:
        return false;
    }

    if (!qFuzzyCompare(m_requestedValues.value(parameter).toReal(), value.toReal())) {
        m_requestedValues[parameter] = value;
        emit requestedValueChanged(parameter);
    }

    QVariant newValue = actualValue(parameter);
    if (!qFuzzyCompare(oldValue.toReal(), newValue.toReal()))
        emit actualValueChanged(parameter);

    return true;
}