5e801e2793
As in the past, to avoid rewriting various autotests that contain line-number information, an extra blank line has been inserted at the end of the license text to ensure that this commit does not change the total number of lines in the license header. Change-Id: I20e5215108c6ebd5f8474fed5c3665118e4791e6 Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
441 lines
12 KiB
C++
441 lines
12 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/
|
|
**
|
|
** 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::MetaData::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::CaptureModes 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();
|
|
}
|
|
}
|