qtmultimedia/src/plugins/gstreamer/mediaplayer/playerresourcepolicy.cpp

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#include "playerresourcepolicy.h"

//#define DEBUG_RESOURCE_POLICY
#include <QtCore/qdebug.h>

#ifdef HAVE_RESOURCE_POLICY
#include <policy/resource.h>
#include <policy/resources.h>
#include <policy/resource-set.h>
#endif

PlayerResourcePolicy::PlayerResourcePolicy(QObject *parent) :
    QObject(parent),
    m_videoEnabled(true),
    m_resourceSet(0),
    m_status(PlayerResourcePolicy::Initial)
{
#ifdef HAVE_RESOURCE_POLICY
    m_resourceSet = new ResourcePolicy::ResourceSet("player", this);
    m_resourceSet->setAlwaysReply();

    ResourcePolicy::AudioResource *audioResource = new ResourcePolicy::AudioResource("player");
    audioResource->setProcessID(QCoreApplication::applicationPid());
    audioResource->setStreamTag("media.name", "*");
    m_resourceSet->addResourceObject(audioResource);

    m_resourceSet->addResource(ResourcePolicy::VideoPlaybackType);
    m_resourceSet->update();

    connect(m_resourceSet, SIGNAL(resourcesGranted(const QList<ResourcePolicy::ResourceType>)),
            this, SLOT(handleResourcesGranted()));
    connect(m_resourceSet, SIGNAL(resourcesDenied()),
            this, SLOT(handleResourcesDenied()));
    connect(m_resourceSet, SIGNAL(lostResources()),
            this, SLOT(handleResourcesLost()));
    connect(m_resourceSet, SIGNAL(resourcesReleasedByManager()),
            this, SLOT(handleResourcesLost()));
#endif
}

PlayerResourcePolicy::~PlayerResourcePolicy()
{
}

bool PlayerResourcePolicy::isVideoEnabled() const
{
    return m_videoEnabled;
}

void PlayerResourcePolicy::setVideoEnabled(bool enabled)
{
    if (m_videoEnabled != enabled) {
        m_videoEnabled = enabled;

#ifdef HAVE_RESOURCE_POLICY
        if (enabled)
            m_resourceSet->addResource(ResourcePolicy::VideoPlaybackType);
        else
            m_resourceSet->deleteResource(ResourcePolicy::VideoPlaybackType);

        m_resourceSet->update();
#endif
    }
}

void PlayerResourcePolicy::acquire()
{
#ifdef HAVE_RESOURCE_POLICY

#ifdef DEBUG_RESOURCE_POLICY
    qDebug() << Q_FUNC_INFO << "Acquire resource";
#endif
    m_status = RequestedResource;
    m_resourceSet->acquire();
#else
    m_status = GrantedResource;
#endif
}

void PlayerResourcePolicy::release()
{
#ifdef HAVE_RESOURCE_POLICY

#ifdef DEBUG_RESOURCE_POLICY
    qDebug() << Q_FUNC_INFO << "Release resource";
#endif

    m_resourceSet->release();
#endif
    m_status = Initial;

}

bool PlayerResourcePolicy::isGranted() const
{
    return m_status == GrantedResource;
}

bool PlayerResourcePolicy::isRequested() const
{
    return m_status == RequestedResource;
}

void PlayerResourcePolicy::handleResourcesGranted()
{
    m_status = GrantedResource;
#ifdef DEBUG_RESOURCE_POLICY
    qDebug() << Q_FUNC_INFO << "Resource granted";
#endif
    emit resourcesGranted();
}

void PlayerResourcePolicy::handleResourcesDenied()
{
    m_status = Initial;
#ifdef DEBUG_RESOURCE_POLICY
    qDebug() << Q_FUNC_INFO << "Resource denied";
#endif
    emit resourcesDenied();
}

void PlayerResourcePolicy::handleResourcesLost()
{
#ifdef DEBUG_RESOURCE_POLICY
    qDebug() << Q_FUNC_INFO << "Resource lost";
#endif
    if (m_status != Initial) {
        m_status = Initial;
        emit resourcesLost();
    }

#ifdef HAVE_RESOURCE_POLICY
    m_resourceSet->release();
#endif
}