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#include "qgstreamercapturemetadatacontrol.h"

#include <gst/gst.h>

#include <gst/gstversion.h>

struct QGstreamerMetaDataKeyLookup

{

    QtMedia::MetaData key;

    const char *token;

};

static const QGstreamerMetaDataKeyLookup qt_gstreamerMetaDataKeys[] =

{

    { QtMedia::Title, GST_TAG_TITLE },

    //{ QtMedia::SubTitle, 0 },

    //{ QtMedia::Author, 0 },

    { QtMedia::Comment, GST_TAG_COMMENT },

    { QtMedia::Description, GST_TAG_DESCRIPTION },

    //{ QtMedia::Category, 0 },

    { QtMedia::Genre, GST_TAG_GENRE },

    //{ QtMedia::Year, 0 },

    //{ QtMedia::UserRating, 0 },

    { QtMedia::Language, GST_TAG_LANGUAGE_CODE },

    { QtMedia::Publisher, GST_TAG_ORGANIZATION },

    { QtMedia::Copyright, GST_TAG_COPYRIGHT },

    //{ QtMedia::ParentalRating, 0 },

    //{ QtMedia::RatingOrganisation, 0 },

    // Media

    //{ QtMedia::Size, 0 },

    //{ QtMedia::MediaType, 0 },

    { QtMedia::Duration, GST_TAG_DURATION },

    // Audio

    { QtMedia::AudioBitRate, GST_TAG_BITRATE },

    { QtMedia::AudioCodec, GST_TAG_AUDIO_CODEC },

    //{ QtMedia::ChannelCount, 0 },

    //{ QtMedia::SampleRate, 0 },

    // Music

    { QtMedia::AlbumTitle, GST_TAG_ALBUM },

    { QtMedia::AlbumArtist,  GST_TAG_ARTIST},

    { QtMedia::ContributingArtist, GST_TAG_PERFORMER },

#if (GST_VERSION_MAJOR >= 0) && (GST_VERSION_MINOR >= 10) && (GST_VERSION_MICRO >= 19)

    { QtMedia::Composer, GST_TAG_COMPOSER },

#endif

    //{ QtMedia::Conductor, 0 },

    //{ QtMedia::Lyrics, 0 },

    //{ QtMedia::Mood, 0 },

    { QtMedia::TrackNumber, GST_TAG_TRACK_NUMBER },

    //{ QtMedia::CoverArtUrlSmall, 0 },

    //{ QtMedia::CoverArtUrlLarge, 0 },

    // Image/Video

    //{ QtMedia::Resolution, 0 },

    //{ QtMedia::PixelAspectRatio, 0 },

    // Video

    //{ QtMedia::VideoFrameRate, 0 },

    //{ QtMedia::VideoBitRate, 0 },

    { QtMedia::VideoCodec, GST_TAG_VIDEO_CODEC },

    //{ QtMedia::PosterUrl, 0 },

    // Movie

    //{ QtMedia::ChapterNumber, 0 },

    //{ QtMedia::Director, 0 },

    { QtMedia::LeadPerformer, GST_TAG_PERFORMER },

    //{ QtMedia::Writer, 0 },

    // Photos

    //{ QtMedia::CameraManufacturer, 0 },

    //{ QtMedia::CameraModel, 0 },

    //{ QtMedia::Event, 0 },

    //{ QtMedia::Subject, 0 }

};

QGstreamerCaptureMetaDataControl::QGstreamerCaptureMetaDataControl(QObject *parent)

    :QMetaDataControl(parent)

{

}

QVariant QGstreamerCaptureMetaDataControl::metaData(QtMedia::MetaData key) const

{

    static const int count = sizeof(qt_gstreamerMetaDataKeys) / sizeof(QGstreamerMetaDataKeyLookup);

    for (int i = 0; i < count; ++i) {

        if (qt_gstreamerMetaDataKeys[i].key == key) {

            const char *name = qt_gstreamerMetaDataKeys[i].token;

            return m_values.value(QByteArray::fromRawData(name, qstrlen(name)));

        }

    }

    return QVariant();

}

void QGstreamerCaptureMetaDataControl::setMetaData(QtMedia::MetaData key, const QVariant &value)

{

    static const int count = sizeof(qt_gstreamerMetaDataKeys) / sizeof(QGstreamerMetaDataKeyLookup);

    for (int i = 0; i < count; ++i) {

        if (qt_gstreamerMetaDataKeys[i].key == key) {

            const char *name = qt_gstreamerMetaDataKeys[i].token;

            m_values.insert(QByteArray::fromRawData(name, qstrlen(name)), value);

            emit QMetaDataControl::metaDataChanged();

            emit metaDataChanged(m_values);

            return;

        }

    }

}

QList<QtMedia::MetaData> QGstreamerCaptureMetaDataControl::availableMetaData() const

{

    static QMap<QByteArray, QtMedia::MetaData> keysMap;

    if (keysMap.isEmpty()) {

        const int count = sizeof(qt_gstreamerMetaDataKeys) / sizeof(QGstreamerMetaDataKeyLookup);

        for (int i = 0; i < count; ++i) {

            keysMap[QByteArray(qt_gstreamerMetaDataKeys[i].token)] = qt_gstreamerMetaDataKeys[i].key;

        }

    }

    QList<QtMedia::MetaData> res;

    foreach (const QByteArray &key, m_values.keys()) {

        QtMedia::MetaData tag = keysMap.value(key, QtMedia::MetaData(-1));

        if (tag != -1)

            res.append(tag);

    }

    return res;

}

QVariant QGstreamerCaptureMetaDataControl::extendedMetaData(QString const &name) const

{

    return m_values.value(name.toLatin1());

}

void QGstreamerCaptureMetaDataControl::setExtendedMetaData(QString const &name, QVariant const &value)

{

    m_values.insert(name.toLatin1(), value);

    emit QMetaDataControl::metaDataChanged();

    emit metaDataChanged(m_values);

}

QStringList QGstreamerCaptureMetaDataControl::availableExtendedMetaData() const

{

    QStringList res;

    foreach (const QByteArray &key, m_values.keys())

        res.append(QString(key));

    return res;

}