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#include "qgstreamermediacontainercontrol.h"

#include <QtCore/qdebug.h>

QGstreamerMediaContainerControl::QGstreamerMediaContainerControl(QObject *parent)

    :QMediaContainerControl(parent)

{

    QList<QByteArray> formatCandidates;

    formatCandidates << "matroska" << "ogg" << "mp4" << "wav" << "quicktime" << "avi" << "3gpp";

    formatCandidates << "flv" << "amr" << "asf" << "dv" << "gif";

    formatCandidates << "mpeg" << "vob" << "mpegts" << "3g2" << "3gp";

    formatCandidates << "raw";

    m_elementNames["matroska"] = "matroskamux";

    m_elementNames["ogg"] = "oggmux";

    m_elementNames["mp4"] = "ffmux_mp4";

    m_elementNames["quicktime"] = "ffmux_mov";

    m_elementNames["avi"] = "avimux";

    m_elementNames["3gpp"] = "gppmux";

    m_elementNames["flv"] = "flvmux";

    m_elementNames["wav"] = "wavenc";

    m_elementNames["amr"] = "ffmux_amr";

    m_elementNames["asf"] = "ffmux_asf";

    m_elementNames["dv"] = "ffmux_dv";

    m_elementNames["gif"] = "ffmux_gif";

    m_elementNames["mpeg"] = "ffmux_mpeg";

    m_elementNames["vob"] = "ffmux_vob";

    m_elementNames["mpegts"] = "ffmux_mpegts";

    m_elementNames["3g2"] = "ffmux_3g2";

    m_elementNames["3gp"] = "ffmux_3gp";

    m_elementNames["raw"] = "identity";

    m_containerExtensions["matroska"] = "mkv";

    m_containerExtensions["quicktime"] = "mov";

    m_containerExtensions["mpegts"] = "m2t";

    m_containerExtensions["mpeg"] = "mpg";

    QSet<QString> allTypes;

    foreach( const QByteArray& formatName, formatCandidates ) {

        QByteArray elementName = m_elementNames[formatName];

        GstElementFactory *factory = gst_element_factory_find(elementName.constData());

        if (factory) {

            m_supportedContainers.append(formatName);

            const gchar *descr = gst_element_factory_get_description(factory);

            m_containerDescriptions.insert(formatName, QString::fromUtf8(descr));

            if (formatName == QByteArray("raw")) {

                m_streamTypes.insert(formatName, allTypes);

            } else {

                QSet<QString> types = supportedStreamTypes(factory, GST_PAD_SINK);

                m_streamTypes.insert(formatName, types);

                allTypes.unite(types);

            }

            gst_object_unref(GST_OBJECT(factory));

        }

    }

    //if (!m_supportedContainers.isEmpty())

    //    setContainerMimeType(m_supportedContainers[0]);

}

QSet<QString> QGstreamerMediaContainerControl::supportedStreamTypes(GstElementFactory *factory, GstPadDirection direction)

{

    QSet<QString> types;

    const GList *pads = gst_element_factory_get_static_pad_templates(factory);

    for (const GList *pad = pads; pad; pad = g_list_next(pad)) {

        GstStaticPadTemplate *templ = (GstStaticPadTemplate*)pad->data;

        if (templ->direction == direction) {

            GstCaps *caps = gst_static_caps_get(&templ->static_caps);

            for (uint i=0; i<gst_caps_get_size(caps); i++) {

                GstStructure *structure = gst_caps_get_structure(caps, i);

                types.insert( QString::fromUtf8(gst_structure_get_name(structure)) );

            }

            gst_caps_unref(caps);

        }

    }

    return types;

}

QSet<QString> QGstreamerMediaContainerControl::supportedStreamTypes(const QString &container) const

{

    return m_streamTypes.value(container);

}

QString QGstreamerMediaContainerControl::containerExtension() const

{

    return m_containerExtensions.value(m_format, m_format);

}