/****************************************************************************

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** Foundation and appearing in the file LICENSE.LGPL included in the

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****************************************************************************/

#include <QtCore/qstring.h>

#include <QtCore/qdebug.h>

#include <QtCore/QFile>

#include "v4lserviceplugin.h"

#include "v4lcameraservice.h"

#include "v4lradioservice.h"

#include <qmediaserviceprovider.h>

QStringList V4LServicePlugin::keys() const

{

    return QStringList() <<

            QLatin1String(Q_MEDIASERVICE_RADIO) <<

            QLatin1String(Q_MEDIASERVICE_CAMERA);

}

QMediaService* V4LServicePlugin::create(QString const& key)

{

    if (key == QLatin1String(Q_MEDIASERVICE_RADIO))

        return new V4LRadioService;

    if (key == QLatin1String(Q_MEDIASERVICE_CAMERA))

        return new V4LCameraService;

    //qDebug() << "unsupported key:" << key;

    return 0;

}

void V4LServicePlugin::release(QMediaService *service)

{

    delete service;

}

QList<QByteArray> V4LServicePlugin::devices(const QByteArray &service) const

{

    if (service == Q_MEDIASERVICE_CAMERA) {

        if (m_cameraDevices.isEmpty())

            updateDevices();

        return m_cameraDevices;

    }

    return QList<QByteArray>();

}

QString V4LServicePlugin::deviceDescription(const QByteArray &service, const QByteArray &device)

{

    if (service == Q_MEDIASERVICE_CAMERA) {

        if (m_cameraDevices.isEmpty())

            updateDevices();

        for (int i=0; i<m_cameraDevices.count(); i++)

            if (m_cameraDevices[i] == device)

                return m_cameraDescriptions[i];

    }

    return QString();

}

void V4LServicePlugin::updateDevices() const

{

    m_cameraDevices.clear();

    m_cameraDescriptions.clear();

    QString name;

    QFile video0("/sys/class/video4linux/video0/name");

    if (video0.exists()) {

        m_cameraDevices.append("v4l:/dev/video0");

        char str[31];

        memset(str,0,31);

        video0.open(QIODevice::ReadOnly);

        video0.read(str,30);

        name = QString(str);

        m_cameraDescriptions.append(name.simplified());

        video0.close();

    }

    QFile video1("/sys/class/video4linux/video1/name");

    if (video0.exists()) {

        m_cameraDevices.append("v4l:/dev/video1");

        char str[31];

        memset(str,0,31);

        video1.open(QIODevice::ReadOnly);

        video1.read(str,30);

        name = QString(str);

        m_cameraDescriptions.append(name.simplified());

        video1.close();

    }

}

Q_EXPORT_PLUGIN2(v4lengine, V4LServicePlugin);