path: root/src/multimedia/platform/qplatformcamera.cpp

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#include "qplatformcamera_p.h"

QT_BEGIN_NAMESPACE

/*!
    \class QPlatformCamera
    \obsolete



    \brief The QPlatformCamera class is an abstract base class for
    classes that control still cameras or video cameras.

    \inmodule QtMultimedia

    \ingroup multimedia_control
*/

/*!
    Constructs a camera control object with \a parent.
*/

QPlatformCamera::QPlatformCamera(QCamera *parent)
  : QObject(parent),
    m_camera(parent)
{
}

QCameraFormat QPlatformCamera::findBestCameraFormat(const QCameraDevice &camera)
{
    QCameraFormat f;
    const auto formats = camera.videoFormats();
    for (const auto &fmt : formats) {
        // check if fmt is better. We try to find the highest resolution that offers
        // at least 30 FPS
        if (f.maxFrameRate() < 30 && fmt.maxFrameRate() > f.maxFrameRate())
            f = fmt;
        else if (f.maxFrameRate() == fmt.maxFrameRate() &&
                 f.resolution().width()*f.resolution().height() < fmt.resolution().width()*fmt.resolution().height())
            f = fmt;
    }
    return f;
}

/*!
    \fn void QPlatformCamera::error(int error, const QString &errorString)

    Signal emitted when an error occurs with error code \a error and
    a description of the error \a errorString.
*/

void QPlatformCamera::supportedFeaturesChanged(QCamera::Features f)
{
    if (m_supportedFeatures == f)
        return;
    m_supportedFeatures = f;
    emit m_camera->supportedFeaturesChanged();
}

void QPlatformCamera::minimumZoomFactorChanged(float factor)
{
    if (m_minZoom == factor)
        return;
    m_minZoom = factor;
    emit m_camera->minimumZoomFactorChanged(factor);
}

void QPlatformCamera::maximumZoomFactorChanged(float factor)
{
    if (m_maxZoom == factor)
        return;
    m_maxZoom = factor;
    emit m_camera->maximumZoomFactorChanged(factor);
}

void QPlatformCamera::focusModeChanged(QCamera::FocusMode mode)
{
    if (m_focusMode == mode)
        return;
    m_focusMode = mode;
    emit m_camera->focusModeChanged();
}

void QPlatformCamera::customFocusPointChanged(const QPointF &point)
{
    if (m_customFocusPoint == point)
        return;
    m_customFocusPoint = point;
    emit m_camera->customFocusPointChanged();
}


void QPlatformCamera::zoomFactorChanged(float zoom)
{
    if (m_zoomFactor == zoom)
        return;
    m_zoomFactor = zoom;
    emit m_camera->zoomFactorChanged(zoom);
}


void QPlatformCamera::focusDistanceChanged(float d)
{
    if (m_focusDistance == d)
        return;
    m_focusDistance = d;
    emit m_camera->focusDistanceChanged(m_focusDistance);
}


void QPlatformCamera::flashReadyChanged(bool ready)
{
    if (m_flashReady == ready)
        return;
    m_flashReady = ready;
    emit m_camera->flashReady(m_flashReady);
}

void QPlatformCamera::flashModeChanged(QCamera::FlashMode mode)
{
    if (m_flashMode == mode)
        return;
    m_flashMode = mode;
    emit m_camera->flashModeChanged();
}

void QPlatformCamera::torchModeChanged(QCamera::TorchMode mode)
{
    if (m_torchMode == mode)
        return;
    m_torchMode = mode;
    emit m_camera->torchModeChanged();
}

void QPlatformCamera::exposureModeChanged(QCamera::ExposureMode mode)
{
    if (m_exposureMode == mode)
        return;
    m_exposureMode = mode;
    emit m_camera->exposureModeChanged();
}

void QPlatformCamera::exposureCompensationChanged(float compensation)
{
    if (m_exposureCompensation == compensation)
        return;
    m_exposureCompensation = compensation;
    emit m_camera->exposureCompensationChanged(compensation);
}

void QPlatformCamera::exposureCompensationRangeChanged(float min, float max)
{
    if (m_minExposureCompensation == min && m_maxExposureCompensation == max)
        return;
    m_minExposureCompensation = min;
    m_maxExposureCompensation = max;
    // tell frontend
}

void QPlatformCamera::isoSensitivityChanged(int iso)
{
    if (m_iso == iso)
        return;
    m_iso = iso;
    emit m_camera->isoSensitivityChanged(iso);
}

void QPlatformCamera::exposureTimeChanged(float speed)
{
    if (m_exposureTime == speed)
        return;
    m_exposureTime = speed;
    emit m_camera->exposureTimeChanged(speed);
}

void QPlatformCamera::whiteBalanceModeChanged(QCamera::WhiteBalanceMode mode)
{
    if (m_whiteBalance == mode)
        return;
    m_whiteBalance = mode;
    emit m_camera->whiteBalanceModeChanged();
}

void QPlatformCamera::colorTemperatureChanged(int temperature)
{
    Q_ASSERT(temperature >= 0);
    Q_ASSERT((temperature > 0 && whiteBalanceMode() == QCamera::WhiteBalanceManual) ||
             (temperature == 0 && whiteBalanceMode() == QCamera::WhiteBalanceAuto));
    if (m_colorTemperature == temperature)
        return;
    m_colorTemperature = temperature;
    emit m_camera->colorTemperatureChanged();
}

int QPlatformCamera::colorTemperatureForWhiteBalance(QCamera::WhiteBalanceMode mode)
{
    switch (mode) {
    case QCamera::WhiteBalanceAuto:
        break;
    case QCamera::WhiteBalanceManual:
    case QCamera::WhiteBalanceSunlight:
        return 5600;
    case QCamera::WhiteBalanceCloudy:
        return 6000;
    case QCamera::WhiteBalanceShade:
        return 7000;
    case QCamera::WhiteBalanceTungsten:
        return 3200;
    case QCamera::WhiteBalanceFluorescent:
        return 4000;
    case QCamera::WhiteBalanceFlash:
        return 5500;
    case QCamera::WhiteBalanceSunset:
        return 3000;
    }
    return 0;
}



QT_END_NAMESPACE

#include "moc_qplatformcamera_p.cpp"