Still Image capture using Qt Mobility
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| − | [[Category:Qt Mobility]] | + | [[Category:Multimedia]][[Category:Qt Mobility]] |
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|'''Tested on devices''' || Nokia N97 Mini | |'''Tested on devices''' || Nokia N97 Mini | ||
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| − | |'''Category''' || Qt Mobility | + | |'''Category''' || Qt Mobility |
|'''Subcategory''' || Multimedia | |'''Subcategory''' || Multimedia | ||
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* SDK help | * SDK help | ||
--[[User:Skumar rao|Skumar rao]] 16:28, 27 March 2010 (UTC) | --[[User:Skumar rao|Skumar rao]] 16:28, 27 March 2010 (UTC) | ||
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Revision as of 04:57, 15 April 2011
| ID | Creation date | 27th Mar 2010 | |
| Platform | S60 5th Edition | Tested on devices | Nokia N97 Mini |
| Category | Qt Mobility | Subcategory | Multimedia |
| Keywords (APIs, classes, methods, functions): QCamera, QStillImageCapture |
Contents |
Overview
Still Image capture using Qt Mobility
Keywords
Project configuration file (.Pro file)
- Add the Qt Mobility project configuration option in the .Pro file as shown below
CONFIG += mobility
MOBILITY += multimedia
Header File
#include <qcamera.h>
#include <qstillimagecapture.h>
public slots:
void captureImage();
void error(QCamera::Error);
void imageCaptured(const QString &fileName, const QImage &preview);
private:
void InitCamera();
private:
QCamera* m_camera;
QStillImageCapture* m_stillImageCapture;
Source File
void ImageCapture::InitCamera() {
QByteArray cameraDevices = QCamera::availableDevices()[0];
m_camera = new QCamera(cameraDevices);
connect(m_camera, SIGNAL(error(QCamera::Error)), this, SLOT(error(QCamera::Error)));
m_camera->setFocusMode(QCamera::AutoFocus);
m_stillImageCapture = new QStillImageCapture(m_camera);
connect(m_stillImageCapture, SIGNAL(imageCaptured(QString,QImage)), this, SLOT(imageCaptured(QString,QImage)));
if (m_camera->state() == QCamera::ActiveState) {
m_camera->stop();
}
m_camera->start();
}
void ImageCapture::error(QCamera::Error e) {
switch (e) {
case QCamera::CameraError: {
QMessageBox::warning(this, "Camera error", "General camera error");
break;
}
case QCamera::NotReadyToCaptureError: {
QMessageBox::warning(this, "Camera error", "Camera not ready to capture image");
break;
}
case QCamera::InvalidRequestError: {
QMessageBox::warning(this, "Camera error", "Invalid request");
break;
}
case QCamera::ServiceMissingError: {
QMessageBox::warning(this, "Camera error", "Service missing");
break;
}
case QCamera::NotSupportedFeatureError: {
QMessageBox::warning(this, "Camera error", "Not supported feature");
break;
}
default:
break;
};
}
void ImageCapture::captureImage() {
if (m_stillImageCapture->isReadyForCapture()) {
m_stillImageCapture->capture(QString("camera_capture.jpg"));
}
else {
QMessageBox::warning(this, "Camera error", "Camera not ready");
}
}
void ImageCapture::imageCaptured(const QString &fileName, const QImage &preview) {
QMessageBox::information(this, "Image Capatured", fileName);
}
Classes
- QCamera
- QStillImageCapture
Reference links
- Qt - cross-platform application and UI framework
- Qt Mobility API
- New Qt APIs Beta - Mobility Project
- SDK help
--skumar_rao 16:28, 27 March 2010 (UTC)
