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/****************************************************************************
**
** 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 Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "camerabinresourcepolicy.h"
#ifdef Q_WS_MAEMO_6
#define HAVE_RESOURCE_POLICY
#endif
//#define DEBUG_RESOURCE_POLICY
#include <QtCore/qdebug.h>
#include <QtCore/qset.h>
#ifdef HAVE_RESOURCE_POLICY
#include <policy/resource.h>
#include <policy/resources.h>
#include <policy/resource-set.h>
#endif
CamerabinResourcePolicy::CamerabinResourcePolicy(QObject *parent) :
QObject(parent),
m_resourceSet(NoResources),
m_releasingResources(false)
{
#ifdef HAVE_RESOURCE_POLICY
//loaded resource set is also kept requested for image and video capture sets
m_resource = new ResourcePolicy::ResourceSet("camera");
m_resource->setAlwaysReply();
m_resource->initAndConnect();
connect(m_resource, SIGNAL(resourcesGranted(const QList<ResourcePolicy::ResourceType>)),
SIGNAL(resourcesGranted()));
connect(m_resource, SIGNAL(resourcesDenied()), SIGNAL(resourcesDenied()));
connect(m_resource, SIGNAL(lostResources()), SIGNAL(resourcesLost()));
connect(m_resource, SIGNAL(resourcesReleased()), SLOT(handleResourcesReleased()));
#endif
}
CamerabinResourcePolicy::~CamerabinResourcePolicy()
{
#ifdef HAVE_RESOURCE_POLICY
//ensure the resources are released
if (m_resourceSet != NoResources)
setResourceSet(NoResources);
//don't delete the resource set until resources are released
if (m_releasingResources) {
m_resource->connect(m_resource, SIGNAL(resourcesReleased()),
SLOT(deleteLater()));
} else {
delete m_resource;
m_resource = 0;
}
#endif
}
CamerabinResourcePolicy::ResourceSet CamerabinResourcePolicy::resourceSet() const
{
return m_resourceSet;
}
void CamerabinResourcePolicy::setResourceSet(CamerabinResourcePolicy::ResourceSet set)
{
CamerabinResourcePolicy::ResourceSet oldSet = m_resourceSet;
m_resourceSet = set;
#ifdef DEBUG_RESOURCE_POLICY
qDebug() << Q_FUNC_INFO << set;
#endif
#ifdef HAVE_RESOURCE_POLICY
QSet<ResourcePolicy::ResourceType> requestedTypes;
switch (set) {
case NoResources:
break;
case LoadedResources:
requestedTypes << ResourcePolicy::LensCoverType //to detect lens cover is opened/closed
<< ResourcePolicy::VideoRecorderType //to open camera device
<< ResourcePolicy::SnapButtonType; //to detect capture button events
break;
case ImageCaptureResources:
requestedTypes << ResourcePolicy::LensCoverType
<< ResourcePolicy::VideoPlaybackType
<< ResourcePolicy::VideoRecorderType
<< ResourcePolicy::AudioPlaybackType
<< ResourcePolicy::ScaleButtonType
<< ResourcePolicy::LedsType
<< ResourcePolicy::SnapButtonType;
break;
case VideoCaptureResources:
requestedTypes << ResourcePolicy::LensCoverType
<< ResourcePolicy::VideoPlaybackType
<< ResourcePolicy::VideoRecorderType
<< ResourcePolicy::AudioPlaybackType
<< ResourcePolicy::AudioRecorderType
<< ResourcePolicy::ScaleButtonType
<< ResourcePolicy::LedsType
<< ResourcePolicy::SnapButtonType;
break;
}
QSet<ResourcePolicy::ResourceType> currentTypes;
foreach (ResourcePolicy::Resource *resource, m_resource->resources())
currentTypes << resource->type();
foreach (ResourcePolicy::ResourceType resourceType, currentTypes - requestedTypes)
m_resource->deleteResource(resourceType);
foreach (ResourcePolicy::ResourceType resourceType, requestedTypes - currentTypes) {
if (resourceType == ResourcePolicy::LensCoverType) {
ResourcePolicy::LensCoverResource *lensCoverResource = new ResourcePolicy::LensCoverResource;
lensCoverResource->setOptional(true);
m_resource->addResourceObject(lensCoverResource);
} else {
m_resource->addResource(resourceType);
}
}
m_resource->update();
if (set != NoResources) {
m_resource->acquire();
} else {
if (oldSet != NoResources) {
m_releasingResources = true;
m_resource->release();
}
}
#endif
}
bool CamerabinResourcePolicy::isResourcesGranted() const
{
#ifdef HAVE_RESOURCE_POLICY
foreach (ResourcePolicy::Resource *resource, m_resource->resources())
if (!resource->isOptional() && !resource->isGranted())
return false;
#endif
return true;
}
void CamerabinResourcePolicy::handleResourcesReleased()
{
#ifdef HAVE_RESOURCE_POLICY
#ifdef DEBUG_RESOURCE_POLICY
qDebug() << Q_FUNC_INFO;
#endif
m_releasingResources = false;
#endif
}
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