Qt Mobility For n900 (maemo)

clockstop

Hello all,

I'm trying to program a video recorder for the nokia n900 phone, however I'm running into some problems. The following code I can get to compile and run on the simulator, but when I switch environments to the maemo device, the libraries Qcamera, and QCameraViewFinder arn't recognized, and I get errors such as "QCamera no such file or directory".

I'm not sure why this should be happening, as all I'm changing is the build environment (even before I compile, the green underlines to indicate a problem appear for Qcamera and QCameraViewFinder). I would assume then that it's an issue with the build environments linking???

On another note, I am using QT Mobility 1.1.1, and the phone only supports 1.0.2, but again these problems are appearing even before I compile.

Here is my code:

.pro

@QT += core gui

TARGET = TestProject
TEMPLATE = app

SOURCES += main.cpp
mainwindow.cpp

HEADERS += mainwindow.h

FORMS += mainwindow.ui

CONFIG += mobility
MOBILITY += systeminfo
multimedia

QT += maemo5

symbian {
TARGET.UID3 = 0xec63c307
# TARGET.CAPABILITY +=
TARGET.EPOCSTACKSIZE = 0x14000
TARGET.EPOCHEAPSIZE = 0x020000 0x800000
}

unix:!symbian {
maemo5 {
target.path = /opt/usr/bin
} else {
target.path = /usr/local/bin
}
INSTALLS += target
}@

main:

@#include <QApplication>
#include <QLabel>
#include <QSystemInfo> //(1)
#include <QVideoWidget>
#include <Qcamera>
#include <QtMultimedia/QtMultimedia>
#include <QCameraViewfinder>
#include <QVideoWidget>
#include <mainwindow.h>
#include <ui_mainwindow.h>
#include <QMediaRecorder>

QTM_USE_NAMESPACE //(2)

int main(int argc, char argv[])
{
QApplication app(argc, argv);
MainWindow mainWindow;
QCamera camera = new QCamera;

// get a convenience ptr to ui
Ui::MainWindow* ui = mainWindow.GetUi();
QWidget* viewFinderWidget = new QWidget(ui->viewFinderDisplay);
QMediaRecorder* mediaRecorder = new QMediaRecorder(camera,viewFinderWidget);

// set the camera viewfinder to our viewfinder
QCameraViewfinder* viewFinder = new QCameraViewfinder(viewFinderWidget);
camera->setViewfinder(viewFinder);

// test label
QLabel* whatevs = new QLabel(viewFinderWidget);
whatevs->setText("whatevs");

//camera->setCaptureMode(QCamera::CaptureVideo);
camera->start();
mediaRecorder->record();

mainWindow.show();
return app.exec();

}@

Any advice would be greatly appreciated as I'm basically pulling my hair out at this point.

kamalakshantv

can you copy paste the console out put. Also which is your existing build environment and SDK version for which it compile properly.

xizzhu

According to the docs at:
http://labs.qt.nokia.com/2011/05/04/qt-sdk-1-1-released/

Only Qt Mobility 1.0.2 is supported on the SDK for Maemo 5, but those camera classes are introduced in 1.1 (if I remember correctly).

One solution is to use the Scratchbox and install all the needed packages manually.
Probably you can just install Qt Mobility 1.1.* packages with the SDK using some hacks too??

fcrochik

We have already on the repositories experimental versions of qt mobility 1.1 and 1.2. Haven't tested them myself but they are there.

aksex

I had same problems when trying to use mobility with maemo target. My n900 has the newest mobility packages installed but maemo simulator doesn't know about that I suppose. When I switched target to symbian simulator it compiled.

fcrochik

It is possible to update the "libraries" on qt creator but it is unsupported and hard to do.
You best bet is to use a linux box with scratchbox to compile the application.