Flashlight.cpp Example File

    /* Copyright (c) 2012, 2013  BlackBerry Limited.
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * http://www.apache.org/licenses/LICENSE-2.0
    *
    * Unless required by applicable law or agreed to in writing, software
    * distributed under the License is distributed on an "AS IS" BASIS,
    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    * See the License for the specific language governing permissions and
    * limitations under the License.
    */

    #include "Flashlight.hpp"

    #include <QDebug>

    Flashlight::Flashlight(QObject * parent)
        : QObject(parent)
        , m_enabled(false)
    {
        // Acquire access to the camera hardware
        const camera_error_t error = camera_open(CAMERA_UNIT_REAR, CAMERA_MODE_PREAD | CAMERA_MODE_PWRITE, &m_camera);
        if (CAMERA_EOK != error) {
            qDebug() << "Failed to open camera";
        }
    }

    Flashlight::~Flashlight()
    {
        // Release access to the camera hardware
        camera_close(m_camera);
    }

    void Flashlight::setEnabled(bool enabled)
    {
        if (m_enabled == enabled)
            return;

        m_enabled = enabled;

        // Switch the flash light on/off depending on the value of the 'enabled' property
        const camera_videolightmode_t mode = (m_enabled ? CAMERA_VIDEOLIGHT_ON : CAMERA_VIDEOLIGHT_OFF);
        const camera_error_t error = camera_config_videolight(m_camera, mode);
        if (CAMERA_EOK != error) {
            qDebug() << "Failed to toggle the front camera video light";
        }

        emit enabledChanged(m_enabled);
    }

    bool Flashlight::enabled() const
    {
        return m_enabled;
    }