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Diffstat (limited to 'examples/camera/camera.cpp')
| -rw-r--r-- | examples/camera/camera.cpp | 440 |
1 files changed, 0 insertions, 440 deletions
diff --git a/examples/camera/camera.cpp b/examples/camera/camera.cpp deleted file mode 100644 index d30d6c1..0000000 --- a/examples/camera/camera.cpp +++ /dev/null @@ -1,440 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** You may use this file under the terms of the BSD license as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor -** the names of its contributors may be used to endorse or promote -** products derived from this software without specific prior written -** permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "camera.h" -#include "ui_camera.h" -#include "videosettings.h" -#include "imagesettings.h" - -#include <qmediaservice.h> -#include <qmediarecorder.h> -#include <qcamera.h> -#include <qcameraviewfinder.h> - -#include <qmessagebox.h> -#include <qpalette.h> - -#include <QtWidgets> - -#if (defined(Q_WS_MAEMO_6)) && QT_VERSION >= 0x040700 -#define HAVE_CAMERA_BUTTONS -#endif - -Camera::Camera(QWidget *parent) : - QMainWindow(parent), - ui(new Ui::Camera), - camera(0), - imageCapture(0), - mediaRecorder(0), - isCapturingImage(false), - applicationExiting(false) -{ - ui->setupUi(this); - - //Camera devices: - QByteArray cameraDevice; - - QActionGroup *videoDevicesGroup = new QActionGroup(this); - videoDevicesGroup->setExclusive(true); - foreach(const QByteArray &deviceName, QCamera::availableDevices()) { - QString description = camera->deviceDescription(deviceName); - QAction *videoDeviceAction = new QAction(description, videoDevicesGroup); - videoDeviceAction->setCheckable(true); - videoDeviceAction->setData(QVariant(deviceName)); - if (cameraDevice.isEmpty()) { - cameraDevice = deviceName; - videoDeviceAction->setChecked(true); - } - ui->menuDevices->addAction(videoDeviceAction); - } - - connect(videoDevicesGroup, SIGNAL(triggered(QAction*)), this, SLOT(updateCameraDevice(QAction*))); - connect(ui->captureWidget, SIGNAL(currentChanged(int)), SLOT(updateCaptureMode())); - -#ifdef HAVE_CAMERA_BUTTONS - ui->lockButton->hide(); -#endif - - setCamera(cameraDevice); -} - -Camera::~Camera() -{ - delete mediaRecorder; - delete imageCapture; - delete camera; -} - -void Camera::setCamera(const QByteArray &cameraDevice) -{ - delete imageCapture; - delete mediaRecorder; - delete camera; - - if (cameraDevice.isEmpty()) - camera = new QCamera; - else - camera = new QCamera(cameraDevice); - - connect(camera, SIGNAL(stateChanged(QCamera::State)), this, SLOT(updateCameraState(QCamera::State))); - connect(camera, SIGNAL(error(QCamera::Error)), this, SLOT(displayCameraError())); - - mediaRecorder = new QMediaRecorder(camera); - connect(mediaRecorder, SIGNAL(stateChanged(QMediaRecorder::State)), this, SLOT(updateRecorderState(QMediaRecorder::State))); - - imageCapture = new QCameraImageCapture(camera); - - connect(mediaRecorder, SIGNAL(durationChanged(qint64)), this, SLOT(updateRecordTime())); - connect(mediaRecorder, SIGNAL(error(QMediaRecorder::Error)), this, SLOT(displayRecorderError())); - - mediaRecorder->setMetaData(QtMultimedia::Title, QVariant(QLatin1String("Test Title"))); - - connect(ui->exposureCompensation, SIGNAL(valueChanged(int)), SLOT(setExposureCompensation(int))); - - camera->setViewfinder(ui->viewfinder); - - updateCameraState(camera->state()); - updateLockStatus(camera->lockStatus(), QCamera::UserRequest); - updateRecorderState(mediaRecorder->state()); - - connect(imageCapture, SIGNAL(readyForCaptureChanged(bool)), this, SLOT(readyForCapture(bool))); - connect(imageCapture, SIGNAL(imageCaptured(int,QImage)), this, SLOT(processCapturedImage(int,QImage))); - connect(imageCapture, SIGNAL(imageSaved(int,QString)), this, SLOT(imageSaved(int,QString))); - - connect(camera, SIGNAL(lockStatusChanged(QCamera::LockStatus, QCamera::LockChangeReason)), - this, SLOT(updateLockStatus(QCamera::LockStatus, QCamera::LockChangeReason))); - - ui->captureWidget->setTabEnabled(0, (camera->isCaptureModeSupported(QCamera::CaptureStillImage))); - ui->captureWidget->setTabEnabled(1, (camera->isCaptureModeSupported(QCamera::CaptureVideo))); - - updateCaptureMode(); - camera->start(); -} - -void Camera::keyPressEvent(QKeyEvent * event) -{ - if (event->isAutoRepeat()) - return; - - switch (event->key()) { -#if QT_VERSION >= 0x040700 - case Qt::Key_CameraFocus: - displayViewfinder(); - camera->searchAndLock(); - event->accept(); - break; - case Qt::Key_Camera: - if (camera->captureMode() == QCamera::CaptureStillImage) { - takeImage(); - } else { - if (mediaRecorder->state() == QMediaRecorder::RecordingState) - stop(); - else - record(); - } - event->accept(); - break; -#endif - default: - QMainWindow::keyPressEvent(event); - } -} - -void Camera::keyReleaseEvent(QKeyEvent * event) -{ - if (event->isAutoRepeat()) - return; - - switch (event->key()) { -#if QT_VERSION >= 0x040700 - case Qt::Key_CameraFocus: - camera->unlock(); - break; -#endif - default: - QMainWindow::keyReleaseEvent(event); - } -} - -void Camera::updateRecordTime() -{ - QString str = QString("Recorded %1 sec").arg(mediaRecorder->duration()/1000); - ui->statusbar->showMessage(str); -} - -void Camera::processCapturedImage(int requestId, const QImage& img) -{ - Q_UNUSED(requestId); - QImage scaledImage = img.scaled(ui->viewfinder->size(), - Qt::KeepAspectRatio, - Qt::SmoothTransformation); - - ui->lastImagePreviewLabel->setPixmap(QPixmap::fromImage(scaledImage)); - //display captured image for 4 seconds - displayCapturedImage(); - QTimer::singleShot(4000, this, SLOT(displayViewfinder())); -} - -void Camera::configureCaptureSettings() -{ - switch (camera->captureMode()) { - case QCamera::CaptureStillImage: - configureImageSettings(); - break; - case QCamera::CaptureVideo: - configureVideoSettings(); - break; - default: - break; - } -} - -void Camera::configureVideoSettings() -{ - VideoSettings settingsDialog(mediaRecorder); - - settingsDialog.setAudioSettings(audioSettings); - settingsDialog.setVideoSettings(videoSettings); - settingsDialog.setFormat(videoContainerFormat); - - if (settingsDialog.exec()) { - audioSettings = settingsDialog.audioSettings(); - videoSettings = settingsDialog.videoSettings(); - videoContainerFormat = settingsDialog.format(); - - mediaRecorder->setEncodingSettings( - audioSettings, - videoSettings, - videoContainerFormat); - } -} - -void Camera::configureImageSettings() -{ - ImageSettings settingsDialog(imageCapture); - - settingsDialog.setImageSettings(imageSettings); - - if (settingsDialog.exec()) { - imageSettings = settingsDialog.imageSettings(); - imageCapture->setEncodingSettings(imageSettings); - } -} - -void Camera::record() -{ - mediaRecorder->record(); - updateRecordTime(); -} - -void Camera::pause() -{ - mediaRecorder->pause(); -} - -void Camera::stop() -{ - mediaRecorder->stop(); -} - -void Camera::setMuted(bool muted) -{ - mediaRecorder->setMuted(muted); -} - -void Camera::toggleLock() -{ - switch (camera->lockStatus()) { - case QCamera::Searching: - case QCamera::Locked: - camera->unlock(); - break; - case QCamera::Unlocked: - camera->searchAndLock(); - } -} - -void Camera::updateLockStatus(QCamera::LockStatus status, QCamera::LockChangeReason reason) -{ - QColor indicationColor = Qt::black; - - switch (status) { - case QCamera::Searching: - indicationColor = Qt::yellow; - ui->statusbar->showMessage(tr("Focusing...")); - ui->lockButton->setText(tr("Focusing...")); - break; - case QCamera::Locked: - indicationColor = Qt::darkGreen; - ui->lockButton->setText(tr("Unlock")); - ui->statusbar->showMessage(tr("Focused"), 2000); - break; - case QCamera::Unlocked: - indicationColor = reason == QCamera::LockFailed ? Qt::red : Qt::black; - ui->lockButton->setText(tr("Focus")); - if (reason == QCamera::LockFailed) - ui->statusbar->showMessage(tr("Focus Failed"), 2000); - } - - QPalette palette = ui->lockButton->palette(); - palette.setColor(QPalette::ButtonText, indicationColor); - ui->lockButton->setPalette(palette); -} - -void Camera::takeImage() - -{ - isCapturingImage = true; - imageCapture->capture(); -} - -void Camera::startCamera() -{ - camera->start(); -} - -void Camera::stopCamera() -{ - camera->stop(); -} - -void Camera::updateCaptureMode() -{ - int tabIndex = ui->captureWidget->currentIndex(); - QCamera::CaptureMode captureMode = tabIndex == 0 ? QCamera::CaptureStillImage : QCamera::CaptureVideo; - - if (camera->isCaptureModeSupported(captureMode)) - camera->setCaptureMode(captureMode); -} - -void Camera::updateCameraState(QCamera::State state) -{ - switch (state) { - case QCamera::ActiveState: - ui->actionStartCamera->setEnabled(false); - ui->actionStopCamera->setEnabled(true); - ui->captureWidget->setEnabled(true); - ui->actionSettings->setEnabled(true); - break; - case QCamera::UnloadedState: - case QCamera::LoadedState: - ui->actionStartCamera->setEnabled(true); - ui->actionStopCamera->setEnabled(false); - ui->captureWidget->setEnabled(false); - ui->actionSettings->setEnabled(false); - } -} - -void Camera::updateRecorderState(QMediaRecorder::State state) -{ - switch (state) { - case QMediaRecorder::StoppedState: - ui->recordButton->setEnabled(true); - ui->pauseButton->setEnabled(true); - ui->stopButton->setEnabled(false); - break; - case QMediaRecorder::PausedState: - ui->recordButton->setEnabled(true); - ui->pauseButton->setEnabled(false); - ui->stopButton->setEnabled(true); - break; - case QMediaRecorder::RecordingState: - ui->recordButton->setEnabled(false); - ui->pauseButton->setEnabled(true); - ui->stopButton->setEnabled(true); - break; - } -} - -void Camera::setExposureCompensation(int index) -{ - camera->exposure()->setExposureCompensation(index*0.5); -} - -void Camera::displayRecorderError() -{ - QMessageBox::warning(this, tr("Capture error"), mediaRecorder->errorString()); -} - -void Camera::displayCameraError() -{ - QMessageBox::warning(this, tr("Camera error"), camera->errorString()); -} - -void Camera::updateCameraDevice(QAction *action) -{ - setCamera(action->data().toByteArray()); -} - -void Camera::displayViewfinder() -{ - ui->stackedWidget->setCurrentIndex(0); -} - -void Camera::displayCapturedImage() -{ - ui->stackedWidget->setCurrentIndex(1); -} - -void Camera::readyForCapture(bool ready) -{ - ui->takeImageButton->setEnabled(ready); -} - -void Camera::imageSaved(int id, const QString &fileName) -{ - Q_UNUSED(id); - Q_UNUSED(fileName); - - isCapturingImage = false; - if (applicationExiting) - close(); -} - -void Camera::closeEvent(QCloseEvent *event) -{ - if (isCapturingImage) { - setEnabled(false); - applicationExiting = true; - event->ignore(); - } else { - event->accept(); - } -} |