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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
/* Camera snippets */
#include "qcamera.h"
#include "qcameraviewfinder.h"
#include "qmediarecorder.h"
#include "qcameraimagecapture.h"
#include "qcameraimageprocessing.h"
#include "qabstractvideosurface.h"
/* Globals so that everything is consistent. */
QCamera *camera = 0;
QCameraViewfinder *viewfinder = 0;
QMediaRecorder *recorder = 0;
QCameraImageCapture *imageCapture = 0;
void overview_viewfinder()
{
//! [Camera overview viewfinder]
camera = new QCamera;
viewfinder = new QCameraViewfinder;
camera->setViewfinder(viewfinder);
viewfinder->show();
camera->start(); // to start the viewfinder
//! [Camera overview viewfinder]
}
// -.-
class MyVideoSurface : public QAbstractVideoSurface
{
QList<QVideoFrame::PixelFormat> supportedPixelFormats(QAbstractVideoBuffer::HandleType handleType) const
{
Q_UNUSED(handleType);
return QList<QVideoFrame::PixelFormat>();
}
bool present(const QVideoFrame &frame)
{
Q_UNUSED(frame);
return true;
}
};
void overview_surface()
{
MyVideoSurface *mySurface;
//! [Camera overview surface]
camera = new QCamera;
mySurface = new MyVideoSurface;
camera->setViewfinder(mySurface);
camera->start();
// MyVideoSurface::present(..) will be called with viewfinder frames
//! [Camera overview surface]
}
void overview_still()
{
//! [Camera overview capture]
imageCapture = new QCameraImageCapture(camera);
camera->setCaptureMode(QCamera::CaptureStillImage);
camera->start(); // Viewfinder frames start flowing
//on half pressed shutter button
camera->searchAndLock();
//on shutter button pressed
imageCapture->capture();
//on shutter button released
camera->unlock();
//! [Camera overview capture]
}
void overview_movie()
{
//! [Camera overview movie]
camera = new QCamera;
recorder = new QMediaRecorder(camera);
camera->setCaptureMode(QCamera::CaptureVideo);
camera->start();
//on shutter button pressed
recorder->record();
// sometime later, or on another press
recorder->stop();
//! [Camera overview movie]
}
void camera_blah()
{
//! [Camera]
camera = new QCamera;
viewfinder = new QCameraViewfinder();
viewfinder->show();
camera->setViewfinder(viewfinder);
imageCapture = new QCameraImageCapture(camera);
camera->setCaptureMode(QCamera::CaptureStillImage);
camera->start();
//! [Camera]
//! [Camera keys]
//on half pressed shutter button
camera->searchAndLock();
//on shutter button pressed
imageCapture->capture();
//on shutter button released
camera->unlock();
//! [Camera keys]
}
void cameraimageprocessing()
{
//! [Camera image whitebalance]
camera = new QCamera;
QCameraImageProcessing *imageProcessing = camera->imageProcessing();
if (imageProcessing->isAvailable()) {
imageProcessing->setWhiteBalanceMode(QCameraImageProcessing::WhiteBalanceFluorescent);
}
//! [Camera image whitebalance]
//! [Camera image denoising]
imageProcessing->setDenoisingLevel(-0.3); //reduce the amount of denoising applied
//! [Camera image denoising]
}
void camerafocus()
{
//! [Camera custom zoom]
QCameraFocus *focus = camera->focus();
focus->setFocusPointMode(QCameraFocus::FocusPointCustom);
focus->setCustomFocusPoint(QPointF(0.25f, 0.75f)); // A point near the bottom left, 25% away from the corner, near that shiny vase
//! [Camera custom zoom]
//! [Camera combined zoom]
focus->zoomTo(3.0, 4.0); // Super zoom!
//! [Camera combined zoom]
//! [Camera focus zones]
focus->setFocusPointMode(QCameraFocus::FocusPointAuto);
QList<QCameraFocusZone> zones = focus->focusZones();
foreach (QCameraFocusZone zone, zones) {
if (zone.status() == QCameraFocusZone::Focused) {
// Draw a green box at zone.area()
} else if (zone.status() == QCameraFocusZone::Selected) {
// This area is selected for autofocusing, but is not in focus
// Draw a yellow box at zone.area()
}
}
//! [Camera focus zones]
}
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