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Diffstat (limited to 'src/multimedia/camera/qcamerafocus.cpp')
| -rw-r--r-- | src/multimedia/camera/qcamerafocus.cpp | 614 |
1 files changed, 0 insertions, 614 deletions
diff --git a/src/multimedia/camera/qcamerafocus.cpp b/src/multimedia/camera/qcamerafocus.cpp deleted file mode 100644 index 980b9dc93..000000000 --- a/src/multimedia/camera/qcamerafocus.cpp +++ /dev/null @@ -1,614 +0,0 @@ -/**************************************************************************** -** -** 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 "qcamerafocus.h" -#include "qmediaobject_p.h" - -#include <qcamera.h> -#include <qcameracontrol.h> -#include <qcameraexposurecontrol.h> -#include <qcamerafocuscontrol.h> -#include <qcamerazoomcontrol.h> -#include <qmediarecordercontrol.h> -#include <qcameraimagecapturecontrol.h> -#include <qvideodeviceselectorcontrol.h> - -#include <QtCore/QDebug> - -QT_BEGIN_NAMESPACE - -static void qRegisterCameraFocusMetaTypes() -{ - qRegisterMetaType<QCameraFocus::FocusModes>("QCameraFocus::FocusModes"); - qRegisterMetaType<QCameraFocus::FocusPointMode>("QCameraFocus::FocusPointMode"); -} - -Q_CONSTRUCTOR_FUNCTION(qRegisterCameraFocusMetaTypes) - - -class QCameraFocusFakeZoomControl : public QCameraZoomControl -{ -public: - QCameraFocusFakeZoomControl(QObject *parent) : - QCameraZoomControl(parent) {} - - qreal maximumOpticalZoom() const override { return 1.0; } - qreal maximumDigitalZoom() const override { return 1.0; } - - qreal requestedOpticalZoom() const override { return 1.0; } - qreal requestedDigitalZoom() const override { return 1.0; } - qreal currentOpticalZoom() const override { return 1.0; } - qreal currentDigitalZoom() const override { return 1.0; } - - void zoomTo(qreal, qreal) override { qWarning("The camera doesn't support zooming."); } -}; - -class QCameraFocusFakeFocusControl : public QCameraFocusControl -{ -public: - QCameraFocusFakeFocusControl(QObject *parent) : - QCameraFocusControl(parent) {} - - QCameraFocus::FocusModes focusMode() const override { return QCameraFocus::AutoFocus; } - void setFocusMode(QCameraFocus::FocusModes) override { qWarning("Focus mode selection is not supported"); } - bool isFocusModeSupported(QCameraFocus::FocusModes) const override { return false; } - - QCameraFocus::FocusPointMode focusPointMode() const override { return QCameraFocus::FocusPointAuto; } - void setFocusPointMode(QCameraFocus::FocusPointMode) override { qWarning("Focus points mode selection is not supported"); } - bool isFocusPointModeSupported(QCameraFocus::FocusPointMode) const override { return false; } - QPointF customFocusPoint() const override { return QPointF(0.5,0.5); } - void setCustomFocusPoint(const QPointF &) override { qWarning("Focus points selection is not supported"); } - - QCameraFocusZoneList focusZones() const override { return QCameraFocusZoneList(); } -}; - - - -class QCameraFocusZoneData : public QSharedData -{ -public: - QCameraFocusZoneData(): - status(QCameraFocusZone::Invalid) - { - - } - - QCameraFocusZoneData(const QRectF &_area, QCameraFocusZone::FocusZoneStatus _status): - area(_area), - status(_status) - { - - } - - - QCameraFocusZoneData(const QCameraFocusZoneData &other): - QSharedData(other), - area(other.area), - status(other.status) - { - } - - QCameraFocusZoneData& operator=(const QCameraFocusZoneData &other) - { - area = other.area; - status = other.status; - return *this; - } - - QRectF area; - QCameraFocusZone::FocusZoneStatus status; -}; - - -/*! - \class QCameraFocusZone - - \brief The QCameraFocusZone class provides information on zones used for autofocusing a camera. - - \inmodule QtMultimedia - \ingroup multimedia - \ingroup multimedia_camera - - For cameras that support autofocusing, in order for a camera to autofocus on - part of a sensor frame, it considers different zones within the frame. Which - zones to use, and where the zones are located vary between different cameras. - - This class exposes what zones are used by a particular camera, and a list of the - zones can be retrieved by a \l QCameraFocus instance. - - You can use this information to present visual feedback - for example, drawing - rectangles around areas of the camera frame that are in focus, or changing the - color of a zone as it comes into focus. - - \snippet multimedia-snippets/camera.cpp Camera focus zones - - \sa QCameraFocus -*/ - -/*! - \enum QCameraFocusZone::FocusZoneStatus - - \value Invalid This zone is not valid - \value Unused This zone may be used for autofocusing, but is not currently. - \value Selected This zone is currently being used for autofocusing, but is not in focus. - \value Focused This zone is being used for autofocusing and is currently in focus. -*/ - -/*! - * \internal - * Creates a new, empty QCameraFocusZone. - */ -QCameraFocusZone::QCameraFocusZone() - :d(new QCameraFocusZoneData) -{ - -} - -/*! - * \internal - * Creates a new QCameraFocusZone with the supplied \a area and \a status. - */ -QCameraFocusZone::QCameraFocusZone(const QRectF &area, QCameraFocusZone::FocusZoneStatus status) - :d(new QCameraFocusZoneData(area, status)) -{ -} - -/*! - * Creates a new QCameraFocusZone as a copy of \a other. - */ -QCameraFocusZone::QCameraFocusZone(const QCameraFocusZone &other) - :d(other.d) -{ - -} - -/*! - * Destroys this QCameraFocusZone. - */ -QCameraFocusZone::~QCameraFocusZone() -{ - -} - -/*! - * Assigns \a other to this QCameraFocusZone. - */ -QCameraFocusZone& QCameraFocusZone::operator=(const QCameraFocusZone &other) -{ - d = other.d; - return *this; -} - -/*! - * Returns true if this focus zone is the same as \a other. - */ -bool QCameraFocusZone::operator==(const QCameraFocusZone &other) const -{ - return d == other.d || - (d->area == other.d->area && d->status == other.d->status); -} - -/*! - * Returns true if this focus zone is not the same as \a other. - */ -bool QCameraFocusZone::operator!=(const QCameraFocusZone &other) const -{ - return !(*this == other); -} - -/*! - * Returns true if this focus zone has a valid area and status. - */ -bool QCameraFocusZone::isValid() const -{ - return d->status != Invalid && !d->area.isValid(); -} - -/*! - * Returns the area of the camera frame that this focus zone encompasses. - * - * Coordinates are in frame relative coordinates - \c QPointF(0,0) is the top - * left of the frame, and \c QPointF(1,1) is the bottom right. - */ -QRectF QCameraFocusZone::area() const -{ - return d->area; -} - -/*! - * Returns the current status of this focus zone. - */ -QCameraFocusZone::FocusZoneStatus QCameraFocusZone::status() const -{ - return d->status; -} - -/*! - * \internal - * Sets the current status of this focus zone to \a status. - */ -void QCameraFocusZone::setStatus(QCameraFocusZone::FocusZoneStatus status) -{ - d->status = status; -} - - -/*! - \class QCameraFocus - - \brief The QCameraFocus class provides an interface for focus and zoom related camera settings. - - \inmodule QtMultimedia - \ingroup multimedia - \ingroup multimedia_camera - - On hardware that supports it, this class lets you adjust the focus - or zoom (both optical and digital). This also includes things - like "Macro" mode for close up work (e.g. reading barcodes, or - recognising letters), or "touch to focus" - indicating an - interesting area of the viewfinder for the hardware to attempt - to focus on. - - \snippet multimedia-snippets/camera.cpp Camera custom zoom - - Zooming can be accomplished in a number of ways - usually the more - expensive but higher quality approach is an optical zoom, which allows - using the full extent of the camera sensor to gather image pixels. In - addition it is possible to digitally zoom, which will generally just - enlarge part of the sensor frame and throw away other parts. If the - camera hardware supports optical zoom this should generally always - be used first. The \l maximumOpticalZoom() method allows this to be - checked. The \l zoomTo() method allows changing both optical and - digital zoom at once. - - \snippet multimedia-snippets/camera.cpp Camera combined zoom - - \section2 Some notes on autofocus - Some hardware supports a movable focus lens assembly, and typically - this hardware also supports automatically focusing via some heuristic. - You can influence this via the \l FocusPointMode setting - typically - the center of the frame is brought into focus, but some hardware - also supports focusing on any faces detected in the frame, or on - a specific point (usually provided by a user in a "touch to focus" - scenario). - - This class (in combination with \l QCameraFocusZone) - can expose information on what parts of the camera sensor image - are in focus or are being used for autofocusing via the \l focusZones() - property: - - \snippet multimedia-snippets/camera.cpp Camera focus zones - - \sa QCameraFocusZone -*/ - - -class QCameraFocusPrivate : public QMediaObjectPrivate -{ - Q_DECLARE_NON_CONST_PUBLIC(QCameraFocus) -public: - void initControls(); - - QCamera *camera; - - QCameraFocusControl *focusControl; - QCameraZoomControl *zoomControl; - bool available; -}; - - -void QCameraFocusPrivate::initControls() -{ - Q_Q(QCameraFocus); - - focusControl = nullptr; - zoomControl = nullptr; - - QMediaService *service = camera->service(); - if (service) { - focusControl = qobject_cast<QCameraFocusControl *>(service->requestControl(QCameraFocusControl_iid)); - zoomControl = qobject_cast<QCameraZoomControl *>(service->requestControl(QCameraZoomControl_iid)); - } - - available = focusControl != nullptr; - - if (!focusControl) - focusControl = new QCameraFocusFakeFocusControl(q); - - if (!zoomControl) - zoomControl = new QCameraFocusFakeZoomControl(q); - - q->connect(focusControl, SIGNAL(focusZonesChanged()), q, SIGNAL(focusZonesChanged())); - - q->connect(zoomControl, SIGNAL(currentOpticalZoomChanged(qreal)), - q, SIGNAL(opticalZoomChanged(qreal))); - q->connect(zoomControl, SIGNAL(currentDigitalZoomChanged(qreal)), - q, SIGNAL(digitalZoomChanged(qreal))); - q->connect(zoomControl, SIGNAL(maximumOpticalZoomChanged(qreal)), - q, SIGNAL(maximumOpticalZoomChanged(qreal))); - q->connect(zoomControl, SIGNAL(maximumDigitalZoomChanged(qreal)), - q, SIGNAL(maximumDigitalZoomChanged(qreal))); -} - -/*! - \internal - Construct a QCameraFocus for \a camera. -*/ - -QCameraFocus::QCameraFocus(QCamera *camera) - : QObject(*new QCameraFocusPrivate, camera) -{ - Q_D(QCameraFocus); - d->camera = camera; - d->initControls(); -} - - -/*! - Destroys the camera focus object. -*/ - -QCameraFocus::~QCameraFocus() -{ -} - -/*! - Returns true if focus related settings are supported by this camera. - - You may need to also check if any specific features are supported. -*/ -bool QCameraFocus::isAvailable() const -{ - return d_func()->available; -} - -/*! - \property QCameraFocus::focusMode - \brief the current camera focus mode. - - - This controls the way the camera lens assembly is configured. - - \sa QCameraFocus::isFocusModeSupported() -*/ - -QCameraFocus::FocusModes QCameraFocus::focusMode() const -{ - return d_func()->focusControl->focusMode(); -} - -void QCameraFocus::setFocusMode(QCameraFocus::FocusModes mode) -{ - d_func()->focusControl->setFocusMode(mode); -} - -/*! - Returns true if the focus \a mode is supported by camera. -*/ - -bool QCameraFocus::isFocusModeSupported(FocusModes mode) const -{ - return d_func()->focusControl->isFocusModeSupported(mode); -} - -/*! - \property QCameraFocus::focusPointMode - \brief the current camera focus point selection mode. - - If the camera focus mode is set to use an autofocusing mode, - this property controls the way the camera will select areas - of the frame to use for autofocusing. - - \sa QCameraFocus::isFocusPointModeSupported() -*/ - -QCameraFocus::FocusPointMode QCameraFocus::focusPointMode() const -{ - return d_func()->focusControl->focusPointMode(); -} - -void QCameraFocus::setFocusPointMode(QCameraFocus::FocusPointMode mode) -{ - d_func()->focusControl->setFocusPointMode(mode); -} - -/*! - Returns true if focus point \a mode is supported. - */ -bool QCameraFocus::isFocusPointModeSupported(QCameraFocus::FocusPointMode mode) const -{ - return d_func()->focusControl->isFocusPointModeSupported(mode); -} - -/*! - \property QCameraFocus::customFocusPoint - - This property represents the position of the custom focus point, in relative frame coordinates: - QPointF(0,0) points to the left top frame point, QPointF(0.5,0.5) points to the frame center. - - The custom focus point property is used only in \c FocusPointCustom focus mode. - */ - -QPointF QCameraFocus::customFocusPoint() const -{ - return d_func()->focusControl->customFocusPoint(); -} - -void QCameraFocus::setCustomFocusPoint(const QPointF &point) -{ - d_func()->focusControl->setCustomFocusPoint(point); -} - -/*! - \property QCameraFocus::focusZones - - Returns the list of active focus zones. - - If QCamera::FocusPointAuto or QCamera::FocusPointFaceDetection focus mode is selected - this method returns the list of zones the camera is actually focused on. - - The coordinates system is the same as for custom focus points: - QPointF(0,0) points to the left top frame point, QPointF(0.5,0.5) points to the frame center. - */ -QCameraFocusZoneList QCameraFocus::focusZones() const -{ - return d_func()->focusControl->focusZones(); -} - -/*! - Returns the maximum optical zoom. - - This will be \c 1.0 on cameras that do not support optical zoom. -*/ - -qreal QCameraFocus::maximumOpticalZoom() const -{ - return d_func()->zoomControl->maximumOpticalZoom(); -} - -/*! - Returns the maximum digital zoom - - This will be \c 1.0 on cameras that do not support digital zoom. -*/ - -qreal QCameraFocus::maximumDigitalZoom() const -{ - return d_func()->zoomControl->maximumDigitalZoom(); -} - -/*! - \property QCameraFocus::opticalZoom - \brief the current optical zoom value. - - \sa QCameraFocus::digitalZoom -*/ - -qreal QCameraFocus::opticalZoom() const -{ - return d_func()->zoomControl->currentOpticalZoom(); -} - -/*! - \property QCameraFocus::digitalZoom - \brief the current digital zoom value. - - \sa QCameraFocus::opticalZoom -*/ -qreal QCameraFocus::digitalZoom() const -{ - return d_func()->zoomControl->currentDigitalZoom(); -} - - -/*! - Set the camera \a optical and \a digital zoom values. - - Since there may be a physical component to move, the change in - zoom value may not be instantaneous. - -*/ -void QCameraFocus::zoomTo(qreal optical, qreal digital) -{ - d_func()->zoomControl->zoomTo(optical, digital); -} - -/*! - \enum QCameraFocus::FocusMode - - \value ManualFocus Manual or fixed focus mode. - \value HyperfocalFocus Focus to hyperfocal distance, with the maximum depth of field achieved. - All objects at distances from half of this - distance out to infinity will be acceptably sharp. - \value InfinityFocus Focus strictly to infinity. - \value AutoFocus One-shot auto focus mode. - \value ContinuousFocus Continuous auto focus mode. - \value MacroFocus One shot auto focus to objects close to camera. -*/ - -/*! - \enum QCameraFocus::FocusPointMode - - \value FocusPointAuto Automatically select one or multiple focus points. - \value FocusPointCenter Focus to the frame center. - \value FocusPointFaceDetection Focus on faces in the frame. - \value FocusPointCustom Focus to the custom point, defined by QCameraFocus::customFocusPoint property. -*/ - -/*! - \fn void QCameraFocus::opticalZoomChanged(qreal value) - - Signal emitted when optical zoom value changes to new \a value. -*/ - -/*! - \fn void QCameraFocus::digitalZoomChanged(qreal value) - - Signal emitted when digital zoom value changes to new \a value. -*/ - -/*! - \fn void QCameraFocus::maximumOpticalZoomChanged(qreal zoom) - - Signal emitted when the maximum supported optical \a zoom value changed. -*/ - -/*! - \fn void QCameraFocus::maximumDigitalZoomChanged(qreal zoom) - - Signal emitted when the maximum supported digital \a zoom value changed. - - The maximum supported zoom value can depend on other camera settings, - like capture mode or resolution. -*/ - - - -/*! - \fn QCameraFocus::focusZonesChanged() - - This signal is emitted when the set of zones used in autofocusing is changed. - - This can change when a zone is focused or loses focus, or new focus zones - have been detected. -*/ - -QT_END_NAMESPACE - -#include "moc_qcamerafocus.cpp" |