diff options
Diffstat (limited to 'src/multimedia/doc/snippets/multimedia-snippets/camera.cpp')
| -rw-r--r-- | src/multimedia/doc/snippets/multimedia-snippets/camera.cpp | 216 |
1 files changed, 67 insertions, 149 deletions
diff --git a/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp b/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp index f851caadd..053af088f 100644 --- a/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp +++ b/src/multimedia/doc/snippets/multimedia-snippets/camera.cpp @@ -1,66 +1,30 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** 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 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause /* Camera snippets */ #include "qcamera.h" -#include "qcamerainfo.h" -#include "qcameraviewfinder.h" -#include "qcameraviewfindersettings.h" +#include "qcameradevice.h" #include "qmediarecorder.h" -#include "qcameraimagecapture.h" -#include "qcameraimageprocessing.h" -#include "qabstractvideosurface.h" +#include "qmediadevices.h" +#include "qmediacapturesession.h" +#include "qimagecapture.h" +#include "qvideosink.h" +#include <QtMultimediaWidgets/qvideowidget.h> #include <QtGui/qscreen.h> #include <QtGui/qguiapplication.h> #include <QtGui/qimage.h> /* Globals so that everything is consistent. */ QCamera *camera = 0; -QCameraViewfinder *viewfinder = 0; QMediaRecorder *recorder = 0; -QCameraImageCapture *imageCapture = 0; +QImageCapture *imageCapture = 0; +QVideoWidget *viewfinder = 0; //! [Camera overview check] bool checkCameraAvailability() { - if (QCameraInfo::availableCameras().count() > 0) + if (QMediaDevices::videoInputs().count() > 0) return true; else return false; @@ -70,47 +34,37 @@ bool checkCameraAvailability() void overview_viewfinder() { //! [Camera overview viewfinder] + QMediaCaptureSession captureSession; camera = new QCamera; - viewfinder = new QCameraViewfinder; - camera->setViewfinder(viewfinder); + captureSession.setCamera(camera); + viewfinder = new QVideoWidget; + captureSession.setVideoOutput(viewfinder); viewfinder->show(); - camera->start(); // to start the viewfinder + camera->start(); // to start the camera //! [Camera overview viewfinder] } void overview_camera_by_position() { //! [Camera overview position] - camera = new QCamera(QCamera::FrontFace); + camera = new QCamera(QCameraDevice::FrontFace); //! [Camera overview position] } // -.- -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; + QVideoSink *mySink; //! [Camera overview surface] + QMediaCaptureSession captureSession; camera = new QCamera; - mySurface = new MyVideoSurface; - camera->setViewfinder(mySurface); + captureSession.setCamera(camera); + mySink = new QVideoSink; + captureSession.setVideoOutput(mySink); camera->start(); - // MyVideoSurface::present(..) will be called with viewfinder frames + // MyVideoSink::setVideoFrame(..) will be called with video frames //! [Camera overview surface] } @@ -121,18 +75,18 @@ void overview_viewfinder_orientation() //! [Camera overview viewfinder orientation] // Assuming a QImage has been created from the QVideoFrame that needs to be presented QImage videoFrame; - QCameraInfo cameraInfo(camera); // needed to get the camera sensor position and orientation + QCameraDevice cameraDevice(camera); // needed to get the camera sensor position and orientation // Get the current display orientation const QScreen *screen = QGuiApplication::primaryScreen(); const int screenAngle = screen->angleBetween(screen->nativeOrientation(), screen->orientation()); int rotation; - if (cameraInfo.position() == QCamera::BackFace) { - rotation = (cameraInfo.orientation() - screenAngle) % 360; + if (cameraDevice.position() == QCameraDevice::BackFace) { + rotation = (cameraDevice.orientation() - screenAngle) % 360; } else { // Front position, compensate the mirror - rotation = (360 - cameraInfo.orientation() + screenAngle) % 360; + rotation = (360 - cameraDevice.orientation() + screenAngle) % 360; } // Rotate the frame so it always shows in the correct orientation @@ -143,31 +97,36 @@ void overview_viewfinder_orientation() void overview_still() { //! [Camera overview capture] - imageCapture = new QCameraImageCapture(camera); + QMediaCaptureSession captureSession; + camera = new QCamera; + captureSession.setCamera(camera); + imageCapture = new QImageCapture; + captureSession.setImageCapture(imageCapture); - 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] + QMediaCaptureSession captureSession; camera = new QCamera; + captureSession.setCamera(camera); recorder = new QMediaRecorder(camera); + captureSession.setRecorder(recorder); - camera->setCaptureMode(QCamera::CaptureVideo); camera->start(); + // setup output format for the recorder + QMediaFormat format(QMediaFormat::MPEG4); + format.setVideoCodec(QMediaRecorder::VideoCodec::H264); + format.setAudioCodec(QMediaRecorder::AudioCodec::MP3); + recorder->setMediaFormat(settings); + //on shutter button pressed recorder->record(); @@ -179,19 +138,19 @@ void overview_movie() void camera_listing() { //! [Camera listing] - const QList<QCameraInfo> cameras = QCameraInfo::availableCameras(); - for (const QCameraInfo &cameraInfo : cameras) - qDebug() << cameraInfo.deviceName(); + const QList<QCameraDevice> cameras = QMediaDevices::videoInputs(); + for (const QCameraDevice &cameraDevice : cameras) + qDebug() << cameraDevice.description(); //! [Camera listing] } void camera_selection() { //! [Camera selection] - const QList<QCameraInfo> cameras = QCameraInfo::availableCameras(); - for (const QCameraInfo &cameraInfo : cameras) { - if (cameraInfo.deviceName() == "mycamera") - camera = new QCamera(cameraInfo); + const QList<QCameraDevice> cameras = QMediaDevices::videoInputs(); + for (const QCameraDevice &cameraDevice : cameras) { + if (cameraDevice.description() == "mycamera") + camera = new QCamera(cameraDevice); } //! [Camera selection] } @@ -200,95 +159,54 @@ void camera_info() { //! [Camera info] QCamera myCamera; - QCameraInfo cameraInfo(myCamera); + QCameraDevice cameraDevice = camera->cameraDevice(); - if (cameraInfo.position() == QCamera::FrontFace) + if (cameraDevice.position() == QCameraDevice::FrontFace) qDebug() << "The camera is on the front face of the hardware system."; - else if (cameraInfo.position() == QCamera::BackFace) + else if (cameraDevice.position() == QCameraDevice::BackFace) qDebug() << "The camera is on the back face of the hardware system."; - - qDebug() << "The camera sensor orientation is " << cameraInfo.orientation() << " degrees."; //! [Camera info] } void camera_blah() { //! [Camera] + QMediaCaptureSession captureSession; camera = new QCamera; + captureSession.setCamera(camera); - viewfinder = new QCameraViewfinder(); + viewfinder = new QVideoWidget(); viewfinder->show(); + captureSession.setVideoOutput(viewfinder); - camera->setViewfinder(viewfinder); - - imageCapture = new QCameraImageCapture(camera); + imageCapture = new QImageCapture(camera); + captureSession.setImageCapture(imageCapture); - 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] + camera->setWhiteBalanceMode(QCamera::WhiteBalanceFluorescent); + //! [Camera image whitebalance] } 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); - const QList<QCameraFocusZone> zones = focus->focusZones(); - for (const 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] -} - -void camera_viewfindersettings() -{ - //! [Camera viewfinder settings] - QCameraViewfinderSettings viewfinderSettings; - viewfinderSettings.setResolution(640, 480); - viewfinderSettings.setMinimumFrameRate(15.0); - viewfinderSettings.setMaximumFrameRate(30.0); - - camera->setViewfinderSettings(viewfinderSettings); - //! [Camera viewfinder settings] + //! [Camera custom focus] + camera->setFocusPointMode(QCamera::FocusModeManual); + camera->setCustomFocusPoint(QPointF(0.25f, 0.75f)); // A point near the bottom left, 25% away from the corner, near that shiny vase + //! [Camera custom focus] + + //! [Camera zoom] + camera->setZoomFactor(3.0); + //! [Camera zoom] } |