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Diffstat (limited to 'src/multimedia/doc/snippets/multimedia-snippets/camera.cpp')
| -rw-r--r-- | src/multimedia/doc/snippets/multimedia-snippets/camera.cpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp b/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp new file mode 100644 index 000000000..757533be8 --- /dev/null +++ b/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp @@ -0,0 +1,201 @@ +/**************************************************************************** +** +** 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] +} |