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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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 QCameraInfo &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 QPlatformCamera::state() const
Returns the state of the camera service.
\sa QCamera::state
*/
/*!
\fn QPlatformCamera::setState(QCamera::State state)
Sets the camera \a state.
State changes are synchronous and indicate user intention,
while camera status is used as a feedback mechanism to inform application about backend status.
Status changes are reported asynchronously with QPlatformCamera::statusChanged() signal.
\sa QCamera::State
*/
/*!
\fn void QPlatformCamera::stateChanged(QCamera::State state)
Signal emitted when the camera \a state changes.
In most cases the state chage is caused by QPlatformCamera::setState(),
but if critical error has occurred the state changes to QCamera::UnloadedState.
*/
/*!
\fn QPlatformCamera::status() const
Returns the status of the camera service.
\sa QCamera::state
*/
/*!
\fn void QPlatformCamera::statusChanged(QCamera::Status status)
Signal emitted when the camera \a status changes.
*/
/*!
\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.
*/
/*!
\fn QPlatformCamera::supportedViewfinderSettings() const
Returns a list of supported camera viewfinder settings.
The list is ordered by preference; preferred settings come first.
*/
/*!
\fn QPlatformCamera::viewfinderSettings() const
Returns the viewfinder settings.
If undefined or unsupported values are passed to QPlatformCamera::setViewfinderSettings(),
this function returns the actual settings used by the camera viewfinder. These may be available
only once the camera is active.
*/
/*!
\fn QPlatformCamera::setViewfinderSettings(const QCameraViewfinderSettings &settings)
Sets the camera viewfinder \a settings.
*/
void QPlatformCamera::statusChanged(QCamera::Status s)
{
if (s == m_status)
return;
m_status = s;
emit m_camera->statusChanged(s);
}
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);
}
QT_END_NAMESPACE
#include "moc_qplatformcamera_p.cpp"
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