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renderer.cpp

/***************************************************************************
                        krender.cpp  -  description
                           -------------------
  begin                : Fri Nov 22 2002
  copyright            : (C) 2002 by Jason Wood
  email                : jasonwood@blueyonder.co.uk
  copyright            : (C) 2005 Lucio Flavio Correa
  email                : lucio.correa@gmail.com
  copyright            : (C) Marco Gittler
  email                : g.marco@freenet.de
  copyright            : (C) 2006 Jean-Baptiste Mardelle
  email                : jb@kdenlive.org

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

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/


#include "renderer.h"
#include "kdenlivesettings.h"
#include "kthumb.h"
#include "definitions.h"

#include <mlt++/Mlt.h>

#include <KDebug>
#include <KStandardDirs>
#include <KMessageBox>
#include <KLocale>
#include <KTemporaryFile>

#include <QTimer>
#include <QDir>
#include <QApplication>

#include <stdlib.h>

static void consumer_frame_show(mlt_consumer, Render * self, mlt_frame frame_ptr)
{
    // detect if the producer has finished playing. Is there a better way to do it ?
    if (self->m_isBlocked) return;
    if (mlt_properties_get_double(MLT_FRAME_PROPERTIES(frame_ptr), "_speed") == 0.0) {
        self->emitConsumerStopped();
    } else {
        self->emitFrameNumber(mlt_frame_get_position(frame_ptr));
    }
}

Render::Render(const QString & rendererName, int winid, int /* extid */, QWidget *parent) :
        QObject(parent),
        m_isBlocked(true),
        m_name(rendererName),
        m_mltConsumer(NULL),
        m_mltProducer(NULL),
        m_framePosition(0),
        m_isZoneMode(false),
        m_isLoopMode(false),
        m_isSplitView(false),
        m_blackClip(NULL),
        m_winid(winid)
{
    kDebug() << "//////////  USING PROFILE: " << (char*)KdenliveSettings::current_profile().toUtf8().data();
    m_refreshTimer = new QTimer(this);
    connect(m_refreshTimer, SIGNAL(timeout()), this, SLOT(refresh()));

    /*if (rendererName == "project") m_monitorId = 10000;
    else m_monitorId = 10001;*/
    m_osdTimer = new QTimer(this);
    connect(m_osdTimer, SIGNAL(timeout()), this, SLOT(slotOsdTimeout()));

    buildConsumer();

    m_mltProducer = m_blackClip->cut(0, 50);
    m_mltConsumer->connect(*m_mltProducer);
    m_mltProducer->set_speed(0.0);
}

Render::~Render()
{
    closeMlt();
}


void Render::closeMlt()
{
    delete m_osdTimer;
    delete m_refreshTimer;
    delete m_mltConsumer;
    delete m_mltProducer;
    delete m_blackClip;
    //delete m_osdInfo;
}


void Render::buildConsumer()
{
    char *tmp;
    m_activeProfile = KdenliveSettings::current_profile();
    tmp = decodedString(m_activeProfile);
    setenv("MLT_PROFILE", tmp, 1);
    delete m_blackClip;
    m_blackClip = NULL;

    m_mltProfile = new Mlt::Profile(tmp);
    delete[] tmp;

    QString videoDriver = KdenliveSettings::videodrivername();
    if (!videoDriver.isEmpty()) {
        if (videoDriver == "x11_noaccel") {
            setenv("SDL_VIDEO_YUV_HWACCEL", "0", 1);
            videoDriver = "x11";
        } else {
            unsetenv("SDL_VIDEO_YUV_HWACCEL");
        }
    }
    setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 1);

    m_mltConsumer = new Mlt::Consumer(*m_mltProfile , "sdl_preview");
    m_mltConsumer->set("resize", 1);
    m_mltConsumer->set("window_id", m_winid);
    m_mltConsumer->set("terminate_on_pause", 1);
    tmp = decodedString(KdenliveSettings::window_background().name());
    m_mltConsumer->set("window_background", tmp);
    delete [] tmp;

    // FIXME: the event object returned by the listen gets leaked...
    m_mltConsumer->listen("consumer-frame-show", this, (mlt_listener) consumer_frame_show);
    m_mltConsumer->set("rescale", "nearest");

    QString audioDevice = KdenliveSettings::audiodevicename();
    if (!audioDevice.isEmpty()) {
        tmp = decodedString(audioDevice);
        m_mltConsumer->set("audio_device", tmp);
        delete[] tmp;
    }

    if (!videoDriver.isEmpty()) {
        tmp = decodedString(videoDriver);
        m_mltConsumer->set("video_driver", tmp);
        delete[] tmp;
    }

    QString audioDriver = KdenliveSettings::audiodrivername();
    if (!audioDriver.isEmpty()) {
        tmp = decodedString(audioDriver);
        m_mltConsumer->set("audio_driver", tmp);
        delete[] tmp;
    }


    m_mltConsumer->set("progressive", 1);
    m_mltConsumer->set("audio_buffer", 1024);
    m_mltConsumer->set("frequency", 48000);

    m_blackClip = new Mlt::Producer(*m_mltProfile , "colour", "black");
    m_blackClip->set("id", "black");

}

int Render::resetProfile()
{
    if (!m_mltConsumer) return 0;
    if (m_activeProfile == KdenliveSettings::current_profile()) {
        kDebug() << "reset to same profile, nothing to do";
        return 1;
    }
    kDebug() << "// RESETTING PROFILE FROM: " << m_activeProfile << " TO: " << KdenliveSettings::current_profile();
    if (m_isSplitView) slotSplitView(false);
    if (!m_mltConsumer->is_stopped()) m_mltConsumer->stop();
    m_mltConsumer->purge();
    delete m_mltConsumer;
    m_mltConsumer = NULL;
    QString scene = sceneList();
    int pos = 0;
    if (m_mltProducer) {
        pos = m_mltProducer->position();
        delete m_mltProducer;
    }
    m_mltProducer = NULL;

    //WARNING: Trying to delete the profile will crash when trying to display a clip afterwards...
    /*if (m_mltProfile) delete m_mltProfile;
    m_mltProfile = NULL;*/

    buildConsumer();

    //kDebug() << "//RESET WITHSCENE: " << scene;
    setSceneList(scene, pos);

    /*char *tmp = decodedString(scene);
    Mlt::Producer *producer = new Mlt::Producer(*m_mltProfile , "westley-xml", tmp);
    delete[] tmp;
    m_mltProducer = producer;
    m_blackClip = new Mlt::Producer(*m_mltProfile , "colour", "black");
    m_mltProducer->optimise();
    m_mltProducer->set_speed(0);
    connectPlaylist();*/

    //delete m_mltProfile;
    // mlt_properties properties = MLT_CONSUMER_PROPERTIES(m_mltConsumer->get_consumer());
    //mlt_profile prof = m_mltProfile->get_profile();
    //mlt_properties_set_data(properties, "_profile", prof, 0, (mlt_destructor)mlt_profile_close, NULL);
    //mlt_properties_set(properties, "profile", "hdv_1080_50i");
    //m_mltConsumer->set("profile", (char *) profile.toUtf8().data());
    //m_mltProfile = new Mlt::Profile((char*) profile.toUtf8().data());

    //apply_profile_properties( m_mltProfile, m_mltConsumer->get_consumer(), properties );
    //refresh();
    return 1;
}

/** Wraps the VEML command of the same name; Seeks the renderer clip to the given time. */
void Render::seek(GenTime time)
{
    if (!m_mltProducer)
        return;
    m_isBlocked = false;
    m_mltProducer->seek((int)(time.frames(m_fps)));
    refresh();
}

//static
char *Render::decodedString(QString str)
{
    /*QCString fn = QFile::encodeName(str);
    char *t = new char[fn.length() + 1];
    strcpy(t, (const char *)fn);*/

    return (char *) qstrdup(str.toUtf8().data());   //toLatin1
}

//static
/*QPixmap Render::frameThumbnail(Mlt::Frame *frame, int width, int height, bool border) {
    QPixmap pix(width, height);

    mlt_image_format format = mlt_image_rgb24a;
    uint8_t *thumb = frame->get_image(format, width, height);
    QImage image(thumb, width, height, QImage::Format_ARGB32);

    if (!image.isNull()) {
        pix = pix.fromImage(image);
        if (border) {
            QPainter painter(&pix);
            painter.drawRect(0, 0, width - 1, height - 1);
        }
    } else pix.fill(Qt::black);
    return pix;
}
*/
int Render::renderWidth() const
{
    return (int)(m_mltProfile->height() * m_mltProfile->dar());
}

int Render::renderHeight() const
{
    return m_mltProfile->height();
}

QPixmap Render::extractFrame(int frame_position, int width, int height)
{
    if (width == -1) {
        width = renderWidth();
        height = renderHeight();
    }
    QPixmap pix(width, height);
    if (!m_mltProducer) {
        pix.fill(Qt::black);
        return pix;
    }
    return KThumb::getFrame(m_mltProducer, frame_position, width, height);
}

QPixmap Render::getImageThumbnail(KUrl url, int /*width*/, int /*height*/)
{
    QImage im;
    QPixmap pixmap;
    if (url.fileName().startsWith(".all.")) {  //  check for slideshow
        QString fileType = url.fileName().right(3);
        QStringList more;
        QStringList::Iterator it;

        QDir dir(url.directory());
        QStringList filter;
        filter << "*." + fileType;
        filter << "*." + fileType.toUpper();
        more = dir.entryList(filter, QDir::Files);
        im.load(url.directory() + '/' + more.at(0));
    } else im.load(url.path());
    //pixmap = im.scaled(width, height);
    return pixmap;
}
/*
//static
QPixmap Render::getVideoThumbnail(char *profile, QString file, int frame_position, int width, int height) {
    QPixmap pix(width, height);
    char *tmp = decodedString(file);
    Mlt::Profile *prof = new Mlt::Profile(profile);
    Mlt::Producer m_producer(*prof, tmp);
    delete[] tmp;
    if (m_producer.is_blank()) {
        pix.fill(Qt::black);
        return pix;
    }

    Mlt::Filter m_convert(*prof, "avcolour_space");
    m_convert.set("forced", mlt_image_rgb24a);
    m_producer.attach(m_convert);
    m_producer.seek(frame_position);
    Mlt::Frame * frame = m_producer.get_frame();
    if (frame) {
        pix = frameThumbnail(frame, width, height, true);
        delete frame;
    }
    if (prof) delete prof;
    return pix;
}
*/
/*
void Render::getImage(KUrl url, int frame_position, QPoint size)
{
    char *tmp = decodedString(url.path());
    Mlt::Producer m_producer(tmp);
    delete[] tmp;
    if (m_producer.is_blank()) {
 return;
    }
    Mlt::Filter m_convert("avcolour_space");
    m_convert.set("forced", mlt_image_rgb24a);
    m_producer.attach(m_convert);
    m_producer.seek(frame_position);

    Mlt::Frame * frame = m_producer.get_frame();

    if (frame) {
 QPixmap pix = frameThumbnail(frame, size.x(), size.y(), true);
 delete frame;
 emit replyGetImage(url, frame_position, pix, size.x(), size.y());
    }
}*/

/* Create thumbnail for color */
/*void Render::getImage(int id, QString color, QPoint size)
{
    QPixmap pixmap(size.x() - 2, size.y() - 2);
    color = color.replace(0, 2, "#");
    color = color.left(7);
    pixmap.fill(QColor(color));
    QPixmap result(size.x(), size.y());
    result.fill(Qt::black);
    //copyBlt(&result, 1, 1, &pixmap, 0, 0, size.x() - 2, size.y() - 2);
    emit replyGetImage(id, result, size.x(), size.y());

}*/

/* Create thumbnail for image */
/*void Render::getImage(KUrl url, QPoint size)
{
    QImage im;
    QPixmap pixmap;
    if (url.fileName().startsWith(".all.")) {  //  check for slideshow
     QString fileType = url.fileName().right(3);
         QStringList more;
         QStringList::Iterator it;

            QDir dir( url.directory() );
            more = dir.entryList( QDir::Files );
            for ( it = more.begin() ; it != more.end() ; ++it ) {
                if ((*it).endsWith("."+fileType, Qt::CaseInsensitive)) {
   if (!im.load(url.directory() + '/' + *it))
       kDebug()<<"++ ERROR LOADIN IMAGE: "<<url.directory() + '/' + *it;
   break;
  }
     }
    }
    else im.load(url.path());

    //pixmap = im.smoothScale(size.x() - 2, size.y() - 2);
    QPixmap result(size.x(), size.y());
    result.fill(Qt::black);
    //copyBlt(&result, 1, 1, &pixmap, 0, 0, size.x() - 2, size.y() - 2);
    emit replyGetImage(url, 1, result, size.x(), size.y());
}*/


double Render::consumerRatio() const
{
    if (!m_mltConsumer) return 1.0;
    return (m_mltConsumer->get_double("aspect_ratio_num") / m_mltConsumer->get_double("aspect_ratio_den"));
}


int Render::getLength()
{

    if (m_mltProducer) {
        // kDebug()<<"//////  LENGTH: "<<mlt_producer_get_playtime(m_mltProducer->get_producer());
        return mlt_producer_get_playtime(m_mltProducer->get_producer());
    }
    return 0;
}

bool Render::isValid(KUrl url)
{
    char *tmp = decodedString(url.path());
    Mlt::Producer producer(*m_mltProfile, tmp);
    delete[] tmp;
    if (producer.is_blank())
        return false;

    return true;
}

double Render::dar() const
{
    return m_mltProfile->dar();
}

void Render::slotSplitView(bool doit)
{
    m_isSplitView = doit;
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);
    if (service.type() != tractor_type || tractor.count() < 2) return;
    Mlt::Field *field = tractor.field();
    if (doit) {
        int screen = 0;
        for (int i = 1; i < tractor.count() && screen < 4; i++) {
            Mlt::Producer trackProducer(tractor.track(i));
            kDebug() << "// TRACK: " << i << ", HIDE: " << trackProducer.get("hide");
            if (QString(trackProducer.get("hide")).toInt() != 1) {
                kDebug() << "// ADIDNG TRACK: " << i;
                Mlt::Transition *transition = new Mlt::Transition(*m_mltProfile, "composite");
                transition->set("mlt_service", "composite");
                transition->set("a_track", 0);
                transition->set("b_track", i);
                transition->set("distort", 1);
                transition->set("internal_added", "200");
                const char *tmp;
                switch (screen) {
                case 0:
                    tmp = "0,0:50%x50%";
                    break;
                case 1:
                    tmp = "50%,0:50%x50%";
                    break;
                case 2:
                    tmp = "0,50%:50%x50%";
                    break;
                case 3:
                default:
                    tmp = "50%,50%:50%x50%";
                    break;
                }
                transition->set("geometry", tmp);
                transition->set("always_active", "1");
                field->plant_transition(*transition, 0, i);
                //delete[] tmp;
                screen++;
            }
        }
        m_mltConsumer->set("refresh", 1);
    } else {
        mlt_service serv = m_mltProducer->parent().get_service();
        mlt_service nextservice = mlt_service_get_producer(serv);
        mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
        QString mlt_type = mlt_properties_get(properties, "mlt_type");
        QString resource = mlt_properties_get(properties, "mlt_service");

        while (mlt_type == "transition") {
            QString added = mlt_properties_get(MLT_SERVICE_PROPERTIES(nextservice), "internal_added");
            if (added == "200") {
                mlt_field_disconnect_service(field->get_field(), nextservice);
            }
            nextservice = mlt_service_producer(nextservice);
            if (nextservice == NULL) break;
            properties = MLT_SERVICE_PROPERTIES(nextservice);
            mlt_type = mlt_properties_get(properties, "mlt_type");
            resource = mlt_properties_get(properties, "mlt_service");
            m_mltConsumer->set("refresh", 1);
        }
    }
}

void Render::getFileProperties(const QDomElement &xml, const QString &clipId, bool replaceProducer)
{
    KUrl url = KUrl(xml.attribute("resource", QString()));
    Mlt::Producer *producer = NULL;
    if (xml.attribute("type").toInt() == TEXT && !QFile::exists(url.path())) {
        emit replyGetFileProperties(clipId, producer, QMap < QString, QString >(), QMap < QString, QString >(), replaceProducer);
        return;
    }
    if (xml.attribute("type").toInt() == COLOR) {
        char *tmp = decodedString("colour:" + xml.attribute("colour"));
        producer = new Mlt::Producer(*m_mltProfile, "fezzik", tmp);
        delete[] tmp;
    } else if (url.isEmpty()) {
        QDomDocument doc;
        QDomElement westley = doc.createElement("westley");
        QDomElement play = doc.createElement("playlist");
        doc.appendChild(westley);
        westley.appendChild(play);
        play.appendChild(doc.importNode(xml, true));
        char *tmp = decodedString(doc.toString());
        producer = new Mlt::Producer(*m_mltProfile, "westley-xml", tmp);
        delete[] tmp;
    } else {
        char *tmp = decodedString(url.path());
        producer = new Mlt::Producer(*m_mltProfile, tmp);
        delete[] tmp;
    }

    if (producer == NULL || producer->is_blank() || !producer->is_valid()) {
        kDebug() << " / / / / / / / / ERROR / / / / // CANNOT LOAD PRODUCER: ";
        emit removeInvalidClip(clipId);
        delete producer;
        return;
    }

    if (xml.hasAttribute("force_aspect_ratio")) {
        double aspect = xml.attribute("force_aspect_ratio").toDouble();
        if (aspect > 0) producer->set("force_aspect_ratio", aspect);
    }
    if (xml.hasAttribute("threads")) {
        int threads = xml.attribute("threads").toInt();
        if (threads != 1) producer->set("threads", threads);
    }
    if (xml.hasAttribute("video_index")) {
        int vindex = xml.attribute("video_index").toInt();
        if (vindex != 0) producer->set("video_index", vindex);
    }
    if (xml.hasAttribute("audio_index")) {
        int aindex = xml.attribute("audio_index").toInt();
        if (aindex != 0) producer->set("audio_index", aindex);
    }

    if (xml.hasAttribute("out")) producer->set_in_and_out(xml.attribute("in").toInt(), xml.attribute("out").toInt());

    char *tmp = decodedString(clipId);
    producer->set("id", tmp);
    delete[] tmp;

    int height = 50;
    int width = (int)(height  * m_mltProfile->dar());
    QMap < QString, QString > filePropertyMap;
    QMap < QString, QString > metadataPropertyMap;

    int frameNumber = xml.attribute("thumbnail", "0").toInt();
    if (frameNumber != 0) producer->seek(frameNumber);

    filePropertyMap["duration"] = QString::number(producer->get_playtime());
    //kDebug() << "///////  PRODUCER: " << url.path() << " IS: " << producer.get_playtime();

    Mlt::Frame *frame = producer->get_frame();

    if (xml.attribute("type").toInt() == SLIDESHOW) {
        if (xml.hasAttribute("ttl")) producer->set("ttl", xml.attribute("ttl").toInt());
        if (xml.attribute("fade") == "1") {
            // user wants a fade effect to slideshow
            Mlt::Filter *filter = new Mlt::Filter(*m_mltProfile, "luma");
            if (filter && filter->is_valid()) {
                if (xml.hasAttribute("ttl")) filter->set("period", xml.attribute("ttl").toInt() - 1);
                if (xml.hasAttribute("luma_duration") && !xml.attribute("luma_duration").isEmpty()) filter->set("luma.out", xml.attribute("luma_duration").toInt());
                if (xml.hasAttribute("luma_file") && !xml.attribute("luma_file").isEmpty()) {
                    char *tmp = decodedString(xml.attribute("luma_file"));
                    filter->set("luma.resource", tmp);
                    delete[] tmp;
                    if (xml.hasAttribute("softness")) {
                        int soft = xml.attribute("softness").toInt();
                        filter->set("luma.softness", (double) soft / 100.0);
                    }
                }
                Mlt::Service clipService(producer->get_service());
                clipService.attach(*filter);
            }
        }
    }


    filePropertyMap["fps"] = producer->get("source_fps");

    if (frame && frame->is_valid()) {
        filePropertyMap["frame_size"] = QString::number(frame->get_int("width")) + 'x' + QString::number(frame->get_int("height"));
        filePropertyMap["frequency"] = QString::number(frame->get_int("frequency"));
        filePropertyMap["channels"] = QString::number(frame->get_int("channels"));
        filePropertyMap["aspect_ratio"] = frame->get("aspect_ratio");

        if (frame->get_int("test_image") == 0) {
            if (url.path().endsWith(".westley") || url.path().endsWith(".kdenlive")) {
                filePropertyMap["type"] = "playlist";
                metadataPropertyMap["comment"] = QString::fromUtf8(producer->get("title"));
            } else if (frame->get_int("test_audio") == 0)
                filePropertyMap["type"] = "av";
            else
                filePropertyMap["type"] = "video";

            mlt_image_format format = mlt_image_yuv422;
            int frame_width = 0;
            int frame_height = 0;
            //frame->set("rescale.interp", "hyper");
            frame->set("normalised_height", height);
            frame->set("normalised_width", width);
            QPixmap pix(width, height);

            uint8_t *data = frame->get_image(format, frame_width, frame_height, 0);
            uint8_t *new_image = (uint8_t *)mlt_pool_alloc(frame_width * (frame_height + 1) * 4);
            mlt_convert_yuv422_to_rgb24a((uint8_t *)data, new_image, frame_width * frame_height);
            QImage image((uchar *)new_image, frame_width, frame_height, QImage::Format_ARGB32);

            if (!image.isNull()) {
                pix = QPixmap::fromImage(image.rgbSwapped());
            } else
                pix.fill(Qt::black);

            mlt_pool_release(new_image);
            emit replyGetImage(clipId, pix);

        } else if (frame->get_int("test_audio") == 0) {
            QPixmap pixmap = KIcon("audio-x-generic").pixmap(QSize(width, height));
            emit replyGetImage(clipId, pixmap);
            filePropertyMap["type"] = "audio";
        }
    }

    // Retrieve audio / video codec name

    // If there is a
    char property[200];
    if (producer->get_int("video_index") > -1) {
        /*if (context->duration == AV_NOPTS_VALUE) {
        kDebug() << " / / / / / / / /ERROR / / / CLIP HAS UNKNOWN DURATION";
            emit removeInvalidClip(clipId);
            delete producer;
            return;
        }*/
        // Get the video_index
        int default_video = producer->get_int("video_index");
        int video_max = 0;
        int default_audio = producer->get_int("audio_index");
        int audio_max = 0;

        // Find maximum stream index values
        for (int ix = 0; ix < producer->get_int("meta.media.nb_streams"); ix++) {
            snprintf(property, sizeof(property), "meta.media.%d.stream.type", ix);
            QString type = producer->get(property);
            if (type == "video")
                video_max = ix;
            else if (type == "audio")
                audio_max = ix;
        }
        filePropertyMap["default_video"] = QString::number(default_video);
        filePropertyMap["video_max"] = QString::number(video_max);
        filePropertyMap["default_audio"] = QString::number(default_audio);
        filePropertyMap["audio_max"] = QString::number(audio_max);

        snprintf(property, sizeof(property), "meta.media.%d.codec.long_name", default_video);
        if (producer->get(property)) {
            filePropertyMap["videocodec"] = producer->get(property);
        } else {
            snprintf(property, sizeof(property), "meta.media.%d.codec.name", default_video);
            if (producer->get(property))
                filePropertyMap["videocodec"] = producer->get(property);
        }

        if (KdenliveSettings::dropbframes()) {
            kDebug() << "// LOOKING FOR H264 on: " << default_video;
            snprintf(property, sizeof(property), "meta.media.%d.codec.name", default_video);
            kDebug() << "PROP: " << property << " = " << producer->get(property);
            if (producer->get(property) && strcmp(producer->get(property), "h264") == 0) {
                kDebug() << "// GOT H264 CLIP, SETTING FAST PROPS";
                producer->set("skip_loop_filter", "all");
                producer->set("skip_frame", "bidir");
            }
        }

    } else kDebug() << " / / / / /WARNING, VIDEO CONTEXT IS NULL!!!!!!!!!!!!!!";
    if (producer->get_int("audio_index") > -1) {
        // Get the audio_index
        int index = producer->get_int("audio_index");

        snprintf(property, sizeof(property), "meta.media.%d.codec.long_name", index);
        if (producer->get(property)) {
            filePropertyMap["audiocodec"] = producer->get(property);
        } else {
            snprintf(property, sizeof(property), "meta.media.%d.codec.name", index);
            if (producer->get(property))
                filePropertyMap["audiocodec"] = producer->get(property);
        }
    }

    // metadata
    Mlt::Properties metadata;
    metadata.pass_values(*producer, "meta.attr.");
    int count = metadata.count();
    for (int i = 0; i < count; i ++) {
        QString name = metadata.get_name(i);
        QString value = QString::fromUtf8(metadata.get(i));
        if (name.endsWith("markup") && !value.isEmpty())
            metadataPropertyMap[ name.section('.', 0, -2)] = value;
    }

    emit replyGetFileProperties(clipId, producer, filePropertyMap, metadataPropertyMap, replaceProducer);
    kDebug() << "REquested fuile info for: " << url.path();
    delete frame;
    // FIXME: should delete this to avoid a leak...
    //delete producer;
}


/** Create the producer from the Westley QDomDocument */
#if 0
void Render::initSceneList()
{
    kDebug() << "--------  INIT SCENE LIST ------_";
    QDomDocument doc;
    QDomElement westley = doc.createElement("westley");
    doc.appendChild(westley);
    QDomElement prod = doc.createElement("producer");
    prod.setAttribute("resource", "colour");
    prod.setAttribute("colour", "red");
    prod.setAttribute("id", "black");
    prod.setAttribute("in", "0");
    prod.setAttribute("out", "0");

    QDomElement tractor = doc.createElement("tractor");
    QDomElement multitrack = doc.createElement("multitrack");

    QDomElement playlist1 = doc.createElement("playlist");
    playlist1.appendChild(prod);
    multitrack.appendChild(playlist1);
    QDomElement playlist2 = doc.createElement("playlist");
    multitrack.appendChild(playlist2);
    QDomElement playlist3 = doc.createElement("playlist");
    multitrack.appendChild(playlist3);
    QDomElement playlist4 = doc.createElement("playlist");
    multitrack.appendChild(playlist4);
    QDomElement playlist5 = doc.createElement("playlist");
    multitrack.appendChild(playlist5);
    tractor.appendChild(multitrack);
    westley.appendChild(tractor);
    // kDebug()<<doc.toString();
    /*
       QString tmp = QString("<westley><producer resource=\"colour\" colour=\"red\" id=\"red\" /><tractor><multitrack><playlist></playlist><playlist></playlist><playlist /><playlist /><playlist></playlist></multitrack></tractor></westley>");*/
    setSceneList(doc, 0);
}
#endif



/** Create the producer from the Westley QDomDocument */
void Render::setProducer(Mlt::Producer *producer, int position)
{
    if (m_winid == -1) return;

    if (m_mltConsumer) {
        m_mltConsumer->stop();
    } else return;

    m_mltConsumer->purge();

    m_isBlocked = true;
    if (m_mltProducer) {
        m_mltProducer->set_speed(0);
        delete m_mltProducer;
        m_mltProducer = NULL;
        emit stopped();
    }
    if (producer) {
        m_mltProducer = new Mlt::Producer(producer->get_producer());
    } else m_mltProducer = m_blackClip->cut(0, 50);
    /*if (KdenliveSettings::dropbframes()) {
    m_mltProducer->set("skip_loop_filter", "all");
        m_mltProducer->set("skip_frame", "bidir");
    }*/
    if (!m_mltProducer || !m_mltProducer->is_valid()) kDebug() << " WARNING - - - - -INVALID PLAYLIST: ";

    m_fps = m_mltProducer->get_fps();
    connectPlaylist();
    if (position != -1) {
        m_mltProducer->seek(position);
        emit rendererPosition(position);
    }
    m_isBlocked = false;
}



/** Create the producer from the Westley QDomDocument */
void Render::setSceneList(QDomDocument list, int position)
{
    setSceneList(list.toString(), position);
}

/** Create the producer from the Westley QDomDocument */
void Render::setSceneList(QString playlist, int position)
{
    if (m_winid == -1) return;
    m_isBlocked = true;
    qDeleteAll(m_slowmotionProducers.values());
    m_slowmotionProducers.clear();

    //kWarning() << "//////  RENDER, SET SCENE LIST: " << playlist;

    if (m_mltConsumer) {
        m_mltConsumer->stop();
        //m_mltConsumer->set("refresh", 0);
    } else {
        m_isBlocked = false;
        return;
    }

    if (m_mltProducer) {
        m_mltProducer->set_speed(0);
        //if (KdenliveSettings::osdtimecode() && m_osdInfo) m_mltProducer->detach(*m_osdInfo);

        delete m_mltProducer;
        m_mltProducer = NULL;
        emit stopped();
    }

    blockSignals(true);
    char *tmp = decodedString(playlist);
    m_mltProducer = new Mlt::Producer(*m_mltProfile, "westley-xml", tmp);
    delete[] tmp;

    if (!m_mltProducer || !m_mltProducer->is_valid()) {
        kDebug() << " WARNING - - - - -INVALID PLAYLIST: " << tmp;
    }
    m_mltProducer->optimise();

    /*if (KdenliveSettings::osdtimecode()) {
    // Attach filter for on screen display of timecode
    delete m_osdInfo;
    QString attr = "attr_check";
    mlt_filter filter = mlt_factory_filter( "data_feed", (char*) attr.ascii() );
    mlt_properties_set_int( MLT_FILTER_PROPERTIES( filter ), "_fezzik", 1 );
    mlt_producer_attach( m_mltProducer->get_producer(), filter );
    mlt_filter_close( filter );

      m_osdInfo = new Mlt::Filter("data_show");
    tmp = decodedString(m_osdProfile);
      m_osdInfo->set("resource", tmp);
    delete[] tmp;
    mlt_properties properties = MLT_PRODUCER_PROPERTIES(m_mltProducer->get_producer());
    mlt_properties_set_int( properties, "meta.attr.timecode", 1);
    mlt_properties_set( properties, "meta.attr.timecode.markup", "#timecode#");
    m_osdInfo->set("dynamic", "1");

      if (m_mltProducer->attach(*m_osdInfo) == 1) kDebug()<<"////// error attaching filter";
    } else {
    m_osdInfo->set("dynamic", "0");
    }*/

    m_fps = m_mltProducer->get_fps();
    kDebug() << "// NEW SCENE LIST DURATION SET TO: " << m_mltProducer->get_playtime();
    connectPlaylist();
    fillSlowMotionProducers();
    if (position != 0) {
        //TODO: seek to correct place after opening project.
        //  Needs to be done from another place since it crashes here.
        m_mltProducer->seek(position);
    }
    m_isBlocked = false;
    blockSignals(false);
    emit refreshDocumentProducers();
    //kDebug()<<"// SETSCN LST, POS: "<<position;
    //if (position != 0) emit rendererPosition(position);
}

/** Create the producer from the Westley QDomDocument */
const QString Render::sceneList()
{
    QString playlist;
    Mlt::Consumer westleyConsumer(*m_mltProfile , "westley:kdenlive_playlist");
    m_mltProducer->optimise();
    westleyConsumer.set("terminate_on_pause", 1);
    Mlt::Producer prod(m_mltProducer->get_producer());
    bool split = m_isSplitView;
    if (split) slotSplitView(false);
    westleyConsumer.connect(prod);
    westleyConsumer.start();
    while (!westleyConsumer.is_stopped()) {}
    playlist = QString::fromUtf8(westleyConsumer.get("kdenlive_playlist"));
    if (split) slotSplitView(true);
    return playlist;
}

bool Render::saveSceneList(QString path, QDomElement kdenliveData)
{
    QFile file(path);
    QDomDocument doc;
    doc.setContent(sceneList(), false);
    if (!kdenliveData.isNull()) {
        // add Kdenlive specific tags
        QDomNode wes = doc.elementsByTagName("westley").at(0);
        wes.appendChild(doc.importNode(kdenliveData, true));
    }
    if (!file.open(QIODevice::WriteOnly | QIODevice::Text)) {
        kWarning() << "//////  ERROR writing to file: " << path;
        return false;
    }
    file.write(doc.toString().toUtf8());
    if (file.error() != QFile::NoError) {
        file.close();
        return false;
    }
    file.close();
    return true;
}


void Render::saveZone(KUrl url, QString desc, QPoint zone)
{
    kDebug() << "// SAVING CLIP ZONE, RENDER: " << m_name;
    char *tmppath = decodedString("westley:" + url.path());
    Mlt::Consumer westleyConsumer(*m_mltProfile , tmppath);
    m_mltProducer->optimise();
    delete[] tmppath;
    westleyConsumer.set("terminate_on_pause", 1);
    if (m_name == "clip") {
        Mlt::Producer *prod = m_mltProducer->cut(zone.x(), zone.y());
        tmppath = decodedString(desc);
        Mlt::Playlist list;
        list.insert_at(0, prod, 0);
        list.set("title", tmppath);
        delete[] tmppath;
        westleyConsumer.connect(list);

    } else {
        //TODO: not working yet, save zone from timeline
        Mlt::Producer *p1 = new Mlt::Producer(m_mltProducer->get_producer());
        /* Mlt::Service service(p1->parent().get_service());
         if (service.type() != tractor_type) kWarning() << "// TRACTOR PROBLEM";*/

        //Mlt::Producer *prod = p1->cut(zone.x(), zone.y());
        tmppath = decodedString(desc);
        //prod->set("title", tmppath);
        delete[] tmppath;
        westleyConsumer.connect(*p1); //list);
    }

    westleyConsumer.start();
}

double Render::fps() const
{
    return m_fps;
}

void Render::connectPlaylist()
{
    if (!m_mltConsumer) return;
    //m_mltConsumer->set("refresh", "0");
    m_mltConsumer->connect(*m_mltProducer);
    m_mltProducer->set_speed(0);
    m_mltConsumer->start();
    emit durationChanged(m_mltProducer->get_playtime());
    //refresh();
    /*
     if (m_mltConsumer->start() == -1) {
          KMessageBox::error(qApp->activeWindow(), i18n("Could not create the video preview window.\nThere is something wrong with your Kdenlive install or your driver settings, please fix it."));
          delete m_mltConsumer;
          m_mltConsumer = NULL;
     }
     else {
             refresh();
     }*/
}

void Render::refreshDisplay()
{

    if (!m_mltProducer) return;
    //m_mltConsumer->set("refresh", 0);

    //mlt_properties properties = MLT_PRODUCER_PROPERTIES(m_mltProducer->get_producer());
    /*if (KdenliveSettings::osdtimecode()) {
        mlt_properties_set_int( properties, "meta.attr.timecode", 1);
        mlt_properties_set( properties, "meta.attr.timecode.markup", "#timecode#");
        m_osdInfo->set("dynamic", "1");
        m_mltProducer->attach(*m_osdInfo);
    }
    else {
        m_mltProducer->detach(*m_osdInfo);
        m_osdInfo->set("dynamic", "0");
    }*/
    refresh();
}

void Render::setVolume(double /*volume*/)
{
    if (!m_mltConsumer || !m_mltProducer) return;
    /*osdTimer->stop();
    m_mltConsumer->set("refresh", 0);
    // Attach filter for on screen display of timecode
    mlt_properties properties = MLT_PRODUCER_PROPERTIES(m_mltProducer->get_producer());
    mlt_properties_set_double( properties, "meta.volume", volume );
    mlt_properties_set_int( properties, "meta.attr.osdvolume", 1);
    mlt_properties_set( properties, "meta.attr.osdvolume.markup", i18n("Volume: ") + QString::number(volume * 100));

    if (!KdenliveSettings::osdtimecode()) {
    m_mltProducer->detach(*m_osdInfo);
    mlt_properties_set_int( properties, "meta.attr.timecode", 0);
     if (m_mltProducer->attach(*m_osdInfo) == 1) kDebug()<<"////// error attaching filter";
    }*/
    refresh();
    m_osdTimer->setSingleShot(2500);
}

void Render::slotOsdTimeout()
{
    mlt_properties properties = MLT_PRODUCER_PROPERTIES(m_mltProducer->get_producer());
    mlt_properties_set_int(properties, "meta.attr.osdvolume", 0);
    mlt_properties_set(properties, "meta.attr.osdvolume.markup", NULL);
    //if (!KdenliveSettings::osdtimecode()) m_mltProducer->detach(*m_osdInfo);
    refresh();
}

void Render::start()
{
    kDebug() << "-----  STARTING MONITOR: " << m_name;
    if (m_winid == -1) {
        kDebug() << "-----  BROKEN MONITOR: " << m_name << ", RESTART";
        return;
    }

    if (m_mltConsumer && m_mltConsumer->is_stopped()) {
        kDebug() << "-----  MONITOR: " << m_name << " WAS STOPPED";
        if (m_mltConsumer->start() == -1) {
            KMessageBox::error(qApp->activeWindow(), i18n("Could not create the video preview window.\nThere is something wrong with your Kdenlive install or your driver settings, please fix it."));
            delete m_mltConsumer;
            m_mltConsumer = NULL;
            return;
        } else {
            kDebug() << "-----  MONITOR: " << m_name << " REFRESH";
            m_isBlocked = false;
            refresh();
        }
    }
    m_isBlocked = false;
}

void Render::clear()
{
    kDebug() << " *********  RENDER CLEAR";
    if (m_mltConsumer) {
        //m_mltConsumer->set("refresh", 0);
        if (!m_mltConsumer->is_stopped()) m_mltConsumer->stop();
    }

    if (m_mltProducer) {
        //if (KdenliveSettings::osdtimecode() && m_osdInfo) m_mltProducer->detach(*m_osdInfo);
        m_mltProducer->set_speed(0.0);
        delete m_mltProducer;
        m_mltProducer = NULL;
        emit stopped();
    }
}

void Render::stop()
{
    if (m_mltConsumer && !m_mltConsumer->is_stopped()) {
        kDebug() << "/////////////   RENDER STOPPED: " << m_name;
        m_isBlocked = true;
        //m_mltConsumer->set("refresh", 0);
        m_mltConsumer->stop();
        // delete m_mltConsumer;
        // m_mltConsumer = NULL;
    }
    kDebug() << "/////////////   RENDER STOP2-------";
    m_isBlocked = true;

    if (m_mltProducer) {
        if (m_isZoneMode) resetZoneMode();
        m_mltProducer->set_speed(0.0);
        //m_mltProducer->set("out", m_mltProducer->get_length() - 1);
        //kDebug() << m_mltProducer->get_length();
    }
    kDebug() << "/////////////   RENDER STOP3-------";
}

void Render::stop(const GenTime & startTime)
{

    kDebug() << "/////////////   RENDER STOP-------2";
    if (m_mltProducer) {
        if (m_isZoneMode) resetZoneMode();
        m_mltProducer->set_speed(0.0);
        m_mltProducer->seek((int) startTime.frames(m_fps));
    }
    m_mltConsumer->purge();
}

void Render::pause()
{
    if (!m_mltProducer || !m_mltConsumer)
        return;
    if (m_mltProducer->get_speed() == 0.0) return;
    if (m_isZoneMode) resetZoneMode();
    m_isBlocked = true;
    m_mltConsumer->set("refresh", 0);
    m_mltProducer->set_speed(0.0);
    emit rendererPosition(m_framePosition);
    m_mltProducer->seek(m_framePosition);
    m_mltConsumer->purge();
}

void Render::switchPlay()
{
    if (!m_mltProducer || !m_mltConsumer)
        return;
    if (m_isZoneMode) resetZoneMode();
    if (m_mltProducer->get_speed() == 0.0) {
        m_isBlocked = false;
        m_mltProducer->set_speed(1.0);
        m_mltConsumer->set("refresh", 1);
    } else {
        m_isBlocked = true;
        m_mltConsumer->set("refresh", 0);
        m_mltProducer->set_speed(0.0);
        emit rendererPosition(m_framePosition);
        m_mltProducer->seek(m_framePosition);
        m_mltConsumer->purge();
        //kDebug()<<" *********  RENDER PAUSE: "<<m_mltProducer->get_speed();
        //m_mltConsumer->set("refresh", 0);
        /*mlt_position position = mlt_producer_position( m_mltProducer->get_producer() );
        m_mltProducer->set_speed(0);
        m_mltProducer->seek( position );
               //m_mltProducer->seek((int) m_framePosition);
               m_isBlocked = false;*/
    }
    /*if (speed == 0.0) {
    m_mltProducer->seek((int) m_framePosition + 1);
        m_mltConsumer->purge();
    }*/
    //refresh();
}

void Render::play(double speed)
{
    if (!m_mltProducer)
        return;
    // if (speed == 0.0) m_mltProducer->set("out", m_mltProducer->get_length() - 1);
    m_isBlocked = false;
    m_mltProducer->set_speed(speed);
    /*if (speed == 0.0) {
    m_mltProducer->seek((int) m_framePosition + 1);
        m_mltConsumer->purge();
    }*/
    refresh();
}

void Render::play(const GenTime & startTime)
{
    if (!m_mltProducer || !m_mltConsumer)
        return;
    m_isBlocked = false;
    m_mltProducer->seek((int)(startTime.frames(m_fps)));
    m_mltProducer->set_speed(1.0);
    m_mltConsumer->set("refresh", 1);
}

void Render::loopZone(const GenTime & startTime, const GenTime & stopTime)
{
    if (!m_mltProducer || !m_mltConsumer)
        return;
    //m_mltProducer->set("eof", "loop");
    m_isLoopMode = true;
    m_loopStart = startTime;
    playZone(startTime, stopTime);
}

void Render::playZone(const GenTime & startTime, const GenTime & stopTime)
{
    if (!m_mltProducer || !m_mltConsumer)
        return;
    m_isBlocked = false;
    if (!m_isZoneMode) m_originalOut = m_mltProducer->get_playtime() - 1;
    m_mltProducer->set("out", stopTime.frames(m_fps));
    m_mltProducer->seek((int)(startTime.frames(m_fps)));
    m_mltProducer->set_speed(1.0);
    m_mltConsumer->set("refresh", 1);
    m_isZoneMode = true;
}

void Render::resetZoneMode()
{
    if (!m_isZoneMode && !m_isLoopMode) return;
    m_mltProducer->set("out", m_originalOut);
    //m_mltProducer->set("eof", "pause");
    m_isZoneMode = false;
    m_isLoopMode = false;
}

void Render::seekToFrame(int pos)
{
    //kDebug()<<" *********  RENDER SEEK TO POS";
    if (!m_mltProducer)
        return;
    m_isBlocked = false;
    resetZoneMode();
    m_mltProducer->seek(pos);
    refresh();
}

void Render::askForRefresh()
{
    // Use a Timer so that we don't refresh too much
    m_refreshTimer->start(200);
}

void Render::doRefresh()
{
    // Use a Timer so that we don't refresh too much
    if (!m_isBlocked && m_mltConsumer) m_mltConsumer->set("refresh", 1);
}

void Render::refresh()
{
    if (!m_mltProducer || m_isBlocked)
        return;
    m_refreshTimer->stop();
    if (m_mltConsumer) {
        m_mltConsumer->set("refresh", 1);
    }
}

double Render::playSpeed()
{
    if (m_mltProducer) return m_mltProducer->get_speed();
    return 0.0;
}

GenTime Render::seekPosition() const
{
    if (m_mltProducer) return GenTime((int) m_mltProducer->position(), m_fps);
    else return GenTime();
}


const QString & Render::rendererName() const
{
    return m_name;
}


void Render::emitFrameNumber(double position)
{
    m_framePosition = position;
    emit rendererPosition((int) position);
    //if (qApp->activeWindow()) QApplication::postEvent(qApp->activeWindow(), new PositionChangeEvent( GenTime((int) position, m_fps), m_monitorId));
}

void Render::emitConsumerStopped()
{
    // This is used to know when the playing stopped
    if (m_mltProducer) {
        double pos = m_mltProducer->position();
        if (m_isLoopMode) play(m_loopStart);
        else if (m_isZoneMode) resetZoneMode();
        emit rendererStopped((int) pos);
        //if (qApp->activeWindow()) QApplication::postEvent(qApp->activeWindow(), new PositionChangeEvent(GenTime((int) pos, m_fps), m_monitorId + 100));
        //new QCustomEvent(10002));
    }
}



void Render::exportFileToFirewire(QString /*srcFileName*/, int /*port*/, GenTime /*startTime*/, GenTime /*endTime*/)
{
    KMessageBox::sorry(0, i18n("Firewire is not enabled on your system.\n Please install Libiec61883 and recompile Kdenlive"));
}


void Render::exportCurrentFrame(KUrl url, bool /*notify*/)
{
    if (!m_mltProducer) {
        KMessageBox::sorry(qApp->activeWindow(), i18n("There is no clip, cannot extract frame."));
        return;
    }

    //int height = 1080;//KdenliveSettings::defaultheight();
    //int width = 1940; //KdenliveSettings::displaywidth();
    //TODO: rewrite
    QPixmap pix; // = KThumb::getFrame(m_mltProducer, -1, width, height);
    /*
       QPixmap pix(width, height);
       Mlt::Filter m_convert(*m_mltProfile, "avcolour_space");
       m_convert.set("forced", mlt_image_rgb24a);
       m_mltProducer->attach(m_convert);
       Mlt::Frame * frame = m_mltProducer->get_frame();
       m_mltProducer->detach(m_convert);
       if (frame) {
           pix = frameThumbnail(frame, width, height);
           delete frame;
       }*/
    pix.save(url.path(), "PNG");
    //if (notify) QApplication::postEvent(qApp->activeWindow(), new UrlEvent(url, 10003));
}

/** MLT PLAYLIST DIRECT MANIPULATON  **/


void Render::mltCheckLength()
{
    //kDebug()<<"checking track length: "<<track<<"..........";

    Mlt::Service service(m_mltProducer->get_service());
    Mlt::Tractor tractor(service);

    int trackNb = tractor.count();
    int duration = 0;
    int trackDuration;
    if (trackNb == 1) {
        Mlt::Producer trackProducer(tractor.track(0));
        duration = trackProducer.get_playtime() - 1;
        m_mltProducer->set("out", duration);
        emit durationChanged(duration);
        return;
    }
    while (trackNb > 1) {
        Mlt::Producer trackProducer(tractor.track(trackNb - 1));
        trackDuration = trackProducer.get_playtime() - 1;

        //kDebug() << " / / /DURATON FOR TRACK " << trackNb - 1 << " = " << trackDuration;
        if (trackDuration > duration) duration = trackDuration;
        trackNb--;
    }

    Mlt::Producer blackTrackProducer(tractor.track(0));
    int blackDuration = blackTrackProducer.get_playtime() - 1;

    if (blackDuration != duration) {
        Mlt::Playlist blackTrackPlaylist((mlt_playlist) blackTrackProducer.get_service());
        blackTrackPlaylist.clear();
        int dur = duration;
        while (dur > 14000) {
            blackTrackPlaylist.append(*m_blackClip, 0, 13999);
            dur = dur - 14000;
        }
        if (dur > 0) {
            blackTrackPlaylist.append(*m_blackClip, 0, dur);
        }
        m_mltProducer->set("out", duration);
        emit durationChanged(duration);
    }
}

void Render::mltInsertClip(ItemInfo info, QDomElement element, Mlt::Producer *prod)
{
    if (!m_mltProducer) {
        kDebug() << "PLAYLIST NOT INITIALISED //////";
        return;
    }
    Mlt::Producer parentProd(m_mltProducer->parent());
    if (parentProd.get_producer() == NULL) {
        kDebug() << "PLAYLIST BROKEN, CANNOT INSERT CLIP //////";
        return;
    }

    Mlt::Service service(parentProd.get_service());
    Mlt::Tractor tractor(service);
    mlt_service_lock(service.get_service());
    Mlt::Producer trackProducer(tractor.track(info.track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    //kDebug()<<"/// INSERT cLIP: "<<info.cropStart.frames(m_fps)<<", "<<info.startPos.frames(m_fps)<<"-"<<info.endPos.frames(m_fps);

    if (element.attribute("speed", "1.0").toDouble() != 1.0) {
        // We want a slowmotion producer
        double speed = element.attribute("speed", "1.0").toDouble();
        QString url = QString::fromUtf8(prod->get("resource"));
        url.append('?' + QString::number(speed));
        Mlt::Producer *slowprod = m_slowmotionProducers.value(url);
        if (!slowprod || slowprod->get_producer() == NULL) {
            char *tmp = decodedString(url);
            slowprod = new Mlt::Producer(*m_mltProfile, "framebuffer", tmp);
            delete[] tmp;
            QString id = prod->get("id");
            if (id.contains('_')) id = id.section('_', 0, 0);
            QString producerid = "slowmotion:" + id + ':' + QString::number(speed);
            tmp = decodedString(producerid);
            slowprod->set("id", tmp);
            delete[] tmp;
            m_slowmotionProducers.insert(url, slowprod);
        }
        prod = slowprod;
    }

    Mlt::Producer *clip = prod->cut((int) info.cropStart.frames(m_fps), (int)(info.endPos - info.startPos + info.cropStart).frames(m_fps) - 1);
    int newIndex = trackPlaylist.insert_at((int) info.startPos.frames(m_fps), *clip, 1);

    /*if (QString(prod->get("transparency")).toInt() == 1)
        mltAddClipTransparency(info, info.track - 1, QString(prod->get("id")).toInt());*/

    mlt_service_unlock(service.get_service());

    if (info.track != 0 && (newIndex + 1 == trackPlaylist.count())) mltCheckLength();
    //tractor.multitrack()->refresh();
    //tractor.refresh();
}


void Render::mltCutClip(int track, GenTime position)
{

    m_isBlocked = true;

    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) kWarning() << "// TRACTOR PROBLEM";

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());


    /* // Display playlist info
    kDebug()<<"////////////  BEFORE";
    for (int i = 0; i < trackPlaylist.count(); i++) {
    int blankStart = trackPlaylist.clip_start(i);
    int blankDuration = trackPlaylist.clip_length(i) - 1;
    QString blk;
    if (trackPlaylist.is_blank(i)) blk = "(blank)";
    kDebug()<<"CLIP "<<i<<": ("<<blankStart<<'x'<<blankStart + blankDuration<<")"<<blk;
    }*/

    int cutPos = (int) position.frames(m_fps);

    int clipIndex = trackPlaylist.get_clip_index_at(cutPos);
    if (trackPlaylist.is_blank(clipIndex)) {
        kDebug() << "// WARNING, TRYING TO CUT A BLANK";
        m_isBlocked = false;
        return;
    }
    mlt_service_lock(service.get_service());
    int clipStart = trackPlaylist.clip_start(clipIndex);
    trackPlaylist.split(clipIndex, cutPos - clipStart - 1);
    mlt_service_unlock(service.get_service());

    // duplicate effects
    Mlt::Producer *original = trackPlaylist.get_clip_at(clipStart);
    Mlt::Producer *clip = trackPlaylist.get_clip_at(cutPos);

    if (original == NULL || clip == NULL) {
        kDebug() << "// ERROR GRABBING CLIP AFTER SPLIT";
    }
    Mlt::Service clipService(original->get_service());
    Mlt::Service dupService(clip->get_service());
    int ct = 0;
    Mlt::Filter *filter = clipService.filter(ct);
    while (filter) {
        if (filter->is_valid() && strcmp(filter->get("kdenlive_id"), "")) {
            // looks like there is no easy way to duplicate a filter,
            // so we will create a new one and duplicate its properties
            Mlt::Filter *dup = new Mlt::Filter(*m_mltProfile, filter->get("mlt_service"));
            if (dup && dup->is_valid()) {
                Mlt::Properties entries(filter->get_properties());
                for (int i = 0;i < entries.count();i++) {
                    dup->set(entries.get_name(i), entries.get(i));
                }
                dupService.attach(*dup);
            }
        }
        ct++;
        filter = clipService.filter(ct);
    }

    /* // Display playlist info
    kDebug()<<"////////////  AFTER";
    for (int i = 0; i < trackPlaylist.count(); i++) {
    int blankStart = trackPlaylist.clip_start(i);
    int blankDuration = trackPlaylist.clip_length(i) - 1;
    QString blk;
    if (trackPlaylist.is_blank(i)) blk = "(blank)";
    kDebug()<<"CLIP "<<i<<": ("<<blankStart<<'x'<<blankStart + blankDuration<<")"<<blk;
    }*/

    m_isBlocked = false;
}

void Render::mltUpdateClip(ItemInfo info, QDomElement element, Mlt::Producer *prod)
{
    // TODO: optimize
    mltRemoveClip(info.track, info.startPos);
    mltInsertClip(info, element, prod);
}


bool Render::mltRemoveClip(int track, GenTime position)
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) kWarning() << "// TRACTOR PROBLEM";

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    int clipIndex = trackPlaylist.get_clip_index_at((int) position.frames(m_fps));

    /* // Display playlist info
    kDebug()<<"////  BEFORE";
    for (int i = 0; i < trackPlaylist.count(); i++) {
    int blankStart = trackPlaylist.clip_start(i);
    int blankDuration = trackPlaylist.clip_length(i) - 1;
    QString blk;
    if (trackPlaylist.is_blank(i)) blk = "(blank)";
    kDebug()<<"CLIP "<<i<<": ("<<blankStart<<'x'<<blankStart + blankDuration<<")"<<blk;
    }*/

    if (trackPlaylist.is_blank(clipIndex)) {
        kDebug() << "// WARMNING, TRYING TO REMOVE A BLANK: " << clipIndex << ", AT: " << position.frames(25);
        return false;
    }
    m_isBlocked = true;
    Mlt::Producer clip(trackPlaylist.get_clip(clipIndex));
    trackPlaylist.replace_with_blank(clipIndex);
    trackPlaylist.consolidate_blanks(0);
    /*if (QString(clip.parent().get("transparency")).toInt() == 1)
        mltDeleteTransparency((int) position.frames(m_fps), track, QString(clip.parent().get("id")).toInt());*/

    /* // Display playlist info
    kDebug()<<"////  AFTER";
    for (int i = 0; i < trackPlaylist.count(); i++) {
    int blankStart = trackPlaylist.clip_start(i);
    int blankDuration = trackPlaylist.clip_length(i) - 1;
    QString blk;
    if (trackPlaylist.is_blank(i)) blk = "(blank)";
    kDebug()<<"CLIP "<<i<<": ("<<blankStart<<'x'<<blankStart + blankDuration<<")"<<blk;
    }*/

    if (track != 0 && trackPlaylist.count() <= clipIndex) mltCheckLength();
    m_isBlocked = false;
    return true;
}

int Render::mltGetSpaceLength(const GenTime pos, int track, bool fromBlankStart)
{
    if (!m_mltProducer) {
        kDebug() << "PLAYLIST NOT INITIALISED //////";
        return -1;
    }
    Mlt::Producer parentProd(m_mltProducer->parent());
    if (parentProd.get_producer() == NULL) {
        kDebug() << "PLAYLIST BROKEN, CANNOT INSERT CLIP //////";
        return -1;
    }

    Mlt::Service service(parentProd.get_service());
    Mlt::Tractor tractor(service);
    int insertPos = pos.frames(m_fps);

    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    int clipIndex = trackPlaylist.get_clip_index_at(insertPos);
    if (!trackPlaylist.is_blank(clipIndex)) return -1;
    if (fromBlankStart) return trackPlaylist.clip_length(clipIndex);
    return trackPlaylist.clip_length(clipIndex) + trackPlaylist.clip_start(clipIndex) - insertPos;
}

int Render::mltTrackDuration(int track)
{
    if (!m_mltProducer) {
        kDebug() << "PLAYLIST NOT INITIALISED //////";
        return -1;
    }
    Mlt::Producer parentProd(m_mltProducer->parent());
    if (parentProd.get_producer() == NULL) {
        kDebug() << "PLAYLIST BROKEN, CANNOT INSERT CLIP //////";
        return -1;
    }

    Mlt::Service service(parentProd.get_service());
    Mlt::Tractor tractor(service);

    Mlt::Producer trackProducer(tractor.track(track));
    return trackProducer.get_playtime() - 1;
}

void Render::mltInsertSpace(QMap <int, int> trackClipStartList, QMap <int, int> trackTransitionStartList, int track, const GenTime duration, const GenTime timeOffset)
{
    if (!m_mltProducer) {
        kDebug() << "PLAYLIST NOT INITIALISED //////";
        return;
    }
    Mlt::Producer parentProd(m_mltProducer->parent());
    if (parentProd.get_producer() == NULL) {
        kDebug() << "PLAYLIST BROKEN, CANNOT INSERT CLIP //////";
        return;
    }
    //kDebug()<<"// CLP STRT LST: "<<trackClipStartList;
    //kDebug()<<"// TRA STRT LST: "<<trackTransitionStartList;

    Mlt::Service service(parentProd.get_service());
    Mlt::Tractor tractor(service);
    mlt_service_lock(service.get_service());
    int diff = duration.frames(m_fps);
    int offset = timeOffset.frames(m_fps);
    int insertPos;

    if (track != -1) {
        // insert space in one track only
        Mlt::Producer trackProducer(tractor.track(track));
        Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
        insertPos = trackClipStartList.value(track);
        if (insertPos != -1) {
            insertPos += offset;
            int clipIndex = trackPlaylist.get_clip_index_at(insertPos);
            if (diff > 0) trackPlaylist.insert_blank(clipIndex, diff - 1);
            else {
                if (!trackPlaylist.is_blank(clipIndex)) clipIndex --;
                if (!trackPlaylist.is_blank(clipIndex)) kDebug() << "//// ERROR TRYING TO DELETE SPACE FROM " << insertPos;
                int position = trackPlaylist.clip_start(clipIndex);
                trackPlaylist.remove_region(position, - diff - 1);
            }
            trackPlaylist.consolidate_blanks(0);
        }
        // now move transitions
        mlt_service serv = m_mltProducer->parent().get_service();
        mlt_service nextservice = mlt_service_get_producer(serv);
        mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
        QString mlt_type = mlt_properties_get(properties, "mlt_type");
        QString resource = mlt_properties_get(properties, "mlt_service");

        while (mlt_type == "transition") {
            mlt_transition tr = (mlt_transition) nextservice;
            int currentTrack = mlt_transition_get_b_track(tr);
            int currentIn = (int) mlt_transition_get_in(tr);
            int currentOut = (int) mlt_transition_get_out(tr);
            insertPos = trackTransitionStartList.value(track);
            if (insertPos != -1) {
                insertPos += offset;
                if (track == currentTrack && currentOut > insertPos && resource != "mix") {
                    mlt_transition_set_in_and_out(tr, currentIn + diff, currentOut + diff);
                }
            }
            nextservice = mlt_service_producer(nextservice);
            if (nextservice == NULL) break;
            properties = MLT_SERVICE_PROPERTIES(nextservice);
            mlt_type = mlt_properties_get(properties, "mlt_type");
            resource = mlt_properties_get(properties, "mlt_service");
        }
    } else {
        int trackNb = tractor.count();
        while (trackNb > 1) {
            Mlt::Producer trackProducer(tractor.track(trackNb - 1));
            Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());


            //int clipNb = trackPlaylist.count();
            insertPos = trackClipStartList.value(trackNb - 1);
            if (insertPos != -1) {
                insertPos += offset;

                /* kDebug()<<"-------------\nTRACK "<<trackNb<<" HAS "<<clipNb<<" CLPIS";
                 kDebug() << "INSERT SPACE AT: "<<insertPos<<", DIFF: "<<diff<<", TK: "<<trackNb;
                        for (int i = 0; i < clipNb; i++) {
                            kDebug()<<"CLIP "<<i<<", START: "<<trackPlaylist.clip_start(i)<<", END: "<<trackPlaylist.clip_start(i) + trackPlaylist.clip_length(i);
                     if (trackPlaylist.is_blank(i)) kDebug()<<"++ BLANK ++ ";
                     kDebug()<<"-------------";
                 }
                 kDebug()<<"END-------------";*/


                int clipIndex = trackPlaylist.get_clip_index_at(insertPos);
                if (diff > 0) trackPlaylist.insert_blank(clipIndex, diff - 1);
                else {
                    if (!trackPlaylist.is_blank(clipIndex)) clipIndex --;
                    if (!trackPlaylist.is_blank(clipIndex)) kDebug() << "//// ERROR TRYING TO DELETE SPACE FROM " << insertPos;
                    int position = trackPlaylist.clip_start(clipIndex);
                    trackPlaylist.remove_region(position, - diff - 1);
                }
                trackPlaylist.consolidate_blanks(0);
            }
            trackNb--;
        }
        // now move transitions
        mlt_service serv = m_mltProducer->parent().get_service();
        mlt_service nextservice = mlt_service_get_producer(serv);
        mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
        QString mlt_type = mlt_properties_get(properties, "mlt_type");
        QString resource = mlt_properties_get(properties, "mlt_service");

        while (mlt_type == "transition") {
            mlt_transition tr = (mlt_transition) nextservice;
            int currentIn = (int) mlt_transition_get_in(tr);
            int currentOut = (int) mlt_transition_get_out(tr);
            int currentTrack = mlt_transition_get_b_track(tr);
            insertPos = trackTransitionStartList.value(currentTrack);
            if (insertPos != -1) {
                insertPos += offset;
                if (currentOut > insertPos && resource != "mix") {
                    mlt_transition_set_in_and_out(tr, currentIn + diff, currentOut + diff);
                }
            }
            nextservice = mlt_service_producer(nextservice);
            if (nextservice == NULL) break;
            properties = MLT_SERVICE_PROPERTIES(nextservice);
            mlt_type = mlt_properties_get(properties, "mlt_type");
            resource = mlt_properties_get(properties, "mlt_service");
        }
    }
    mlt_service_unlock(service.get_service());
    mltCheckLength();
    m_mltConsumer->set("refresh", 1);
}

int Render::mltChangeClipSpeed(ItemInfo info, double speed, double oldspeed, Mlt::Producer *prod)
{
    m_isBlocked = true;
    int newLength = 0;
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) kWarning() << "// TRACTOR PROBLEM";
    //kDebug() << "Changing clip speed, set in and out: " << info.cropStart.frames(m_fps) << " to " << (info.endPos - info.startPos).frames(m_fps) - 1;
    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(info.track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    int startPos = info.startPos.frames(m_fps);
    int clipIndex = trackPlaylist.get_clip_index_at(startPos);
    int clipLength = trackPlaylist.clip_length(clipIndex);

    Mlt::Producer clip(trackPlaylist.get_clip(clipIndex));
    if (!clip.is_valid() || clip.is_blank()) {
        // invalid clip
        return -1;
    }
    Mlt::Producer clipparent = clip.parent();
    if (!clipparent.is_valid() || clipparent.is_blank()) {
        // invalid clip
        return -1;
    }
    QString serv = clipparent.get("mlt_service");
    QString id = clipparent.get("id");
    //kDebug() << "CLIP SERVICE: " << serv;
    if (serv == "avformat" && speed != 1.0) {
        mlt_service_lock(service.get_service());
        QString url = QString::fromUtf8(clipparent.get("resource"));
        url.append('?' + QString::number(speed));
        Mlt::Producer *slowprod = m_slowmotionProducers.value(url);
        if (!slowprod || slowprod->get_producer() == NULL) {
            char *tmp = decodedString(url);
            slowprod = new Mlt::Producer(*m_mltProfile, "framebuffer", tmp);
            delete[] tmp;
            QString producerid = "slowmotion:" + id + ':' + QString::number(speed);
            tmp = decodedString(producerid);
            slowprod->set("id", tmp);
            delete[] tmp;
            m_slowmotionProducers.insert(url, slowprod);
        }
        trackPlaylist.replace_with_blank(clipIndex);
        trackPlaylist.consolidate_blanks(0);
        // Check that the blank space is long enough for our new duration
        clipIndex = trackPlaylist.get_clip_index_at(startPos);
        int blankEnd = trackPlaylist.clip_start(clipIndex) + trackPlaylist.clip_length(clipIndex);
        Mlt::Producer *cut;
        if (clipIndex + 1 < trackPlaylist.count() && (startPos + clipLength / speed > blankEnd)) {
            GenTime maxLength = GenTime(blankEnd, m_fps) - info.startPos;
            cut = slowprod->cut((int)(info.cropStart.frames(m_fps) / speed), (int)(info.cropStart.frames(m_fps) / speed + maxLength.frames(m_fps) - 1));
        } else cut = slowprod->cut((int)(info.cropStart.frames(m_fps) / speed), (int)((info.cropStart.frames(m_fps) + clipLength) / speed - 1));
        trackPlaylist.insert_at(startPos, *cut, 1);
        clipIndex = trackPlaylist.get_clip_index_at(startPos);
        newLength = trackPlaylist.clip_length(clipIndex);
        mlt_service_unlock(service.get_service());
    } else if (speed == 1.0) {
        mlt_service_lock(service.get_service());

        trackPlaylist.replace_with_blank(clipIndex);
        trackPlaylist.consolidate_blanks(0);

        // Check that the blank space is long enough for our new duration
        clipIndex = trackPlaylist.get_clip_index_at(startPos);
        int blankEnd = trackPlaylist.clip_start(clipIndex) + trackPlaylist.clip_length(clipIndex);

        Mlt::Producer *cut;
        GenTime oldDuration = GenTime(clipLength, m_fps);
        GenTime newDuration = oldDuration * oldspeed;
        if (clipIndex + 1 < trackPlaylist.count() && (info.startPos + newDuration).frames(m_fps) > blankEnd) {
            GenTime maxLength = GenTime(blankEnd, m_fps) - info.startPos;
            cut = prod->cut((int)(info.cropStart.frames(m_fps)), (int)(info.cropStart.frames(m_fps) + maxLength.frames(m_fps) - 1));
        } else cut = prod->cut((int)(info.cropStart.frames(m_fps)), (int)((info.cropStart + newDuration).frames(m_fps)) - 1);
        trackPlaylist.insert_at(startPos, *cut, 1);
        clipIndex = trackPlaylist.get_clip_index_at(startPos);
        newLength = trackPlaylist.clip_length(clipIndex);
        mlt_service_unlock(service.get_service());

    } else if (serv == "framebuffer") {
        mlt_service_lock(service.get_service());
        QString url = QString::fromUtf8(clipparent.get("resource"));
        url = url.section('?', 0, 0);
        url.append('?' + QString::number(speed));
        Mlt::Producer *slowprod = m_slowmotionProducers.value(url);
        if (!slowprod || slowprod->get_producer() == NULL) {
            char *tmp = decodedString(url);
            slowprod = new Mlt::Producer(*m_mltProfile, "framebuffer", tmp);
            delete[] tmp;
            QString producerid = "slowmotion:" + id.section(':', 1, 1) + ':' + QString::number(speed);
            tmp = decodedString(producerid);
            slowprod->set("id", tmp);
            delete[] tmp;
            m_slowmotionProducers.insert(url, slowprod);
        }
        trackPlaylist.replace_with_blank(clipIndex);
        trackPlaylist.consolidate_blanks(0);

        GenTime oldDuration = GenTime(clipLength, m_fps);
        GenTime newDuration = oldDuration * oldspeed / speed;

        // Check that the blank space is long enough for our new duration
        clipIndex = trackPlaylist.get_clip_index_at(startPos);
        int blankEnd = trackPlaylist.clip_start(clipIndex) + trackPlaylist.clip_length(clipIndex);

        Mlt::Producer *cut;
        if (clipIndex + 1 < trackPlaylist.count() && (info.startPos + newDuration).frames(m_fps) > blankEnd) {
            GenTime maxLength = GenTime(blankEnd, m_fps) - info.startPos;
            cut = slowprod->cut((int)(info.cropStart.frames(m_fps) / speed), (int)(info.cropStart.frames(m_fps) / speed + maxLength.frames(m_fps) - 1));
        } else cut = slowprod->cut((int)(info.cropStart.frames(m_fps) / speed), (int)((info.cropStart / speed + newDuration).frames(m_fps) - 1));

        trackPlaylist.insert_at(startPos, *cut, 1);
        clipIndex = trackPlaylist.get_clip_index_at(startPos);
        newLength = trackPlaylist.clip_length(clipIndex);

        mlt_service_unlock(service.get_service());
    }
    if (clipIndex + 1 == trackPlaylist.count()) mltCheckLength();
    m_isBlocked = false;
    return newLength;
}

bool Render::mltRemoveEffect(int track, GenTime position, QString index, bool updateIndex, bool doRefresh)
{
    kDebug() << "// TRYing to remove effect at: " << index;
    Mlt::Service service(m_mltProducer->parent().get_service());
    bool success = false;
    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    //int clipIndex = trackPlaylist.get_clip_index_at(position.frames(m_fps));
    Mlt::Producer *clip = trackPlaylist.get_clip_at((int) position.frames(m_fps));
    if (!clip) {
        kDebug() << " / / / CANNOT FIND CLIP TO REMOVE EFFECT";
        return success;
    }
    Mlt::Service clipService(clip->get_service());
//    if (tag.startsWith("ladspa")) tag = "ladspa";
    m_isBlocked = true;
    int ct = 0;
    Mlt::Filter *filter = clipService.filter(ct);
    while (filter) {
        if ((index == "-1" && strcmp(filter->get("kdenlive_id"), ""))  || filter->get("kdenlive_ix") == index) {// && filter->get("kdenlive_id") == id) {
            if (clipService.detach(*filter) == 0) success = true;
            kDebug() << " / / / DLEETED EFFECT: " << ct;
        } else if (updateIndex) {
            // Adjust the other effects index
            if (QString(filter->get("kdenlive_ix")).toInt() > index.toInt()) filter->set("kdenlive_ix", QString(filter->get("kdenlive_ix")).toInt() - 1);
            ct++;
        } else ct++;
        filter = clipService.filter(ct);
    }
    m_isBlocked = false;
    if (doRefresh) refresh();
    return success;
}


bool Render::mltAddEffect(int track, GenTime position, EffectsParameterList params, bool doRefresh)
{

    Mlt::Service service(m_mltProducer->parent().get_service());

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());

    Mlt::Producer *clip = trackPlaylist.get_clip_at((int) position.frames(m_fps));
    if (!clip) {
        return false;
    }
    Mlt::Service clipService(clip->get_service());
    m_isBlocked = true;

    // temporarily remove all effects after insert point
    QList <Mlt::Filter *> filtersList;
    const int filter_ix = params.paramValue("kdenlive_ix").toInt();
    int ct = 0;
    Mlt::Filter *filter = clipService.filter(ct);
    while (filter) {
        if (QString(filter->get("kdenlive_ix")).toInt() > filter_ix) {
            filtersList.append(filter);
            clipService.detach(*filter);
        } else ct++;
        filter = clipService.filter(ct);
    }

    // create filter
    QString tag =  params.paramValue("tag");
    kDebug() << " / / INSERTING EFFECT: " << tag;
    if (tag.startsWith("ladspa")) tag = "ladspa";
    char *filterTag = decodedString(tag);
    char *filterId = decodedString(params.paramValue("id"));
    QHash<QString, QString>::Iterator it;
    QString kfr = params.paramValue("keyframes");

    if (!kfr.isEmpty()) {
        QStringList keyFrames = kfr.split(';', QString::SkipEmptyParts);
        kDebug() << "// ADDING KEYFRAME EFFECT: " << params.paramValue("keyframes");
        char *starttag = decodedString(params.paramValue("starttag", "start"));
        char *endtag = decodedString(params.paramValue("endtag", "end"));
        kDebug() << "// ADDING KEYFRAME TAGS: " << starttag << ", " << endtag;
        int duration = clip->get_playtime();
        //double max = params.paramValue("max").toDouble();
        double min = params.paramValue("min").toDouble();
        double factor = params.paramValue("factor", "1").toDouble();
        params.removeParam("starttag");
        params.removeParam("endtag");
        params.removeParam("keyframes");
        params.removeParam("min");
        params.removeParam("max");
        params.removeParam("factor");
        int offset = 0;
        for (int i = 0; i < keyFrames.size() - 1; ++i) {
            Mlt::Filter *filter = new Mlt::Filter(*m_mltProfile, filterTag);
            if (filter && filter->is_valid()) {
                filter->set("kdenlive_id", filterId);
                int x1 = keyFrames.at(i).section(':', 0, 0).toInt() + offset;
                double y1 = keyFrames.at(i).section(':', 1, 1).toDouble();
                int x2 = keyFrames.at(i + 1).section(':', 0, 0).toInt();
                double y2 = keyFrames.at(i + 1).section(':', 1, 1).toDouble();
                if (x2 == -1) x2 = duration;

                for (int j = 0; j < params.count(); j++) {
                    char *name = decodedString(params.at(j).name());
                    char *value = decodedString(params.at(j).value());
                    filter->set(name, value);
                    delete[] name;
                    delete[] value;
                }

                filter->set("in", x1);
                filter->set("out", x2);
                //kDebug() << "// ADDING KEYFRAME vals: " << min<<" / "<<max<<", "<<y1<<", factor: "<<factor;
                filter->set(starttag, QString::number((min + y1) / factor).toUtf8().data());
                filter->set(endtag, QString::number((min + y2) / factor).toUtf8().data());
                clipService.attach(*filter);
                offset = 1;
            }
        }
        delete[] starttag;
        delete[] endtag;
    } else {
        Mlt::Filter *filter = new Mlt::Filter(*m_mltProfile, filterTag);
        if (filter && filter->is_valid())
            filter->set("kdenlive_id", filterId);
        else {
            kDebug() << "filter is NULL";
            m_isBlocked = false;
            return false;
        }

        params.removeParam("kdenlive_id");

        for (int j = 0; j < params.count(); j++) {
            char *name = decodedString(params.at(j).name());
            char *value = decodedString(params.at(j).value());
            filter->set(name, value);
            delete[] name;
            delete[] value;
        }

        if (tag == "sox") {
            QString effectArgs = params.paramValue("id").section('_', 1);

            params.removeParam("id");
            params.removeParam("kdenlive_ix");
            params.removeParam("tag");
            params.removeParam("disabled");

            for (int j = 0; j < params.count(); j++) {
                effectArgs.append(' ' + params.at(j).value());
            }
            //kDebug() << "SOX EFFECTS: " << effectArgs.simplified();
            char *value = decodedString(effectArgs.simplified());
            filter->set("effect", value);
            delete[] value;
        }


        // attach filter to the clip
        clipService.attach(*filter);
    }
    delete[] filterId;
    delete[] filterTag;

    // re-add following filters
    for (int i = 0; i < filtersList.count(); i++) {
        clipService.attach(*(filtersList.at(i)));
    }

    m_isBlocked = false;
    if (doRefresh) refresh();
    return true;
}

bool Render::mltEditEffect(int track, GenTime position, EffectsParameterList params)
{
    QString index = params.paramValue("kdenlive_ix");
    QString tag =  params.paramValue("tag");

    if (!params.paramValue("keyframes").isEmpty() || /*it.key().startsWith("#") || */tag.startsWith("ladspa") || tag == "sox" || tag == "autotrack_rectangle") {
        // This is a keyframe effect, to edit it, we remove it and re-add it.
        mltRemoveEffect(track, position, index, true);
        bool success = mltAddEffect(track, position, params);
        return success;
    }

    // create filter
    Mlt::Service service(m_mltProducer->parent().get_service());

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    //int clipIndex = trackPlaylist.get_clip_index_at(position.frames(m_fps));
    Mlt::Producer *clip = trackPlaylist.get_clip_at((int) position.frames(m_fps));
    if (!clip) {
        kDebug() << "WARINIG, CANNOT FIND CLIP ON track: " << track << ", AT POS: " << position.frames(m_fps);
        return false;
    }
    Mlt::Service clipService(clip->get_service());
    m_isBlocked = true;
    int ct = 0;
    Mlt::Filter *filter = clipService.filter(ct);
    while (filter) {
        if (filter->get("kdenlive_ix") == index) {
            break;
        }
        ct++;
        filter = clipService.filter(ct);
    }

    if (!filter) {
        kDebug() << "WARINIG, FILTER FOR EDITING NOT FOUND, ADDING IT!!!!!";
        // filter was not found, it was probably a disabled filter, so add it to the correct place...
        int ct = 0;
        filter = clipService.filter(ct);
        QList <Mlt::Filter *> filtersList;
        while (filter) {
            if (QString(filter->get("kdenlive_ix")).toInt() > index.toInt()) {
                filtersList.append(filter);
                clipService.detach(*filter);
            } else ct++;
            filter = clipService.filter(ct);
        }
        bool success = mltAddEffect(track, position, params);

        for (int i = 0; i < filtersList.count(); i++) {
            clipService.attach(*(filtersList.at(i)));
        }

        m_isBlocked = false;
        return success;
    }

    for (int j = 0; j < params.count(); j++) {
        char *name = decodedString(params.at(j).name());
        char *value = decodedString(params.at(j).value());
        filter->set(name, value);
        delete[] name;
        delete[] value;
    }

    m_isBlocked = false;
    refresh();
    return true;
}

void Render::mltMoveEffect(int track, GenTime position, int oldPos, int newPos)
{

    kDebug() << "MOVING EFFECT FROM " << oldPos << ", TO: " << newPos;
    Mlt::Service service(m_mltProducer->parent().get_service());

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    //int clipIndex = trackPlaylist.get_clip_index_at(position.frames(m_fps));
    Mlt::Producer *clip = trackPlaylist.get_clip_at((int) position.frames(m_fps));
    if (!clip) {
        kDebug() << "WARINIG, CANNOT FIND CLIP ON track: " << track << ", AT POS: " << position.frames(m_fps);
        return;
    }
    Mlt::Service clipService(clip->get_service());
    m_isBlocked = true;
    int ct = 0;
    QList <Mlt::Filter *> filtersList;
    Mlt::Filter *filter = clipService.filter(ct);
    bool found = false;
    if (newPos > oldPos) {
        while (filter) {
            if (!found && QString(filter->get("kdenlive_ix")).toInt() == oldPos) {
                filter->set("kdenlive_ix", newPos);
                filtersList.append(filter);
                clipService.detach(*filter);
                filter = clipService.filter(ct);
                while (filter && QString(filter->get("kdenlive_ix")).toInt() <= newPos) {
                    filter->set("kdenlive_ix", QString(filter->get("kdenlive_ix")).toInt() - 1);
                    ct++;
                    filter = clipService.filter(ct);
                }
                found = true;
            }
            if (filter && QString(filter->get("kdenlive_ix")).toInt() > newPos) {
                filtersList.append(filter);
                clipService.detach(*filter);
            } else ct++;
            filter = clipService.filter(ct);
        }
    } else {
        while (filter) {
            if (QString(filter->get("kdenlive_ix")).toInt() == oldPos) {
                filter->set("kdenlive_ix", newPos);
                filtersList.append(filter);
                clipService.detach(*filter);
            } else ct++;
            filter = clipService.filter(ct);
        }

        ct = 0;
        filter = clipService.filter(ct);
        while (filter) {
            int pos = QString(filter->get("kdenlive_ix")).toInt();
            if (pos >= newPos) {
                if (pos < oldPos) filter->set("kdenlive_ix", pos + 1);
                filtersList.append(filter);
                clipService.detach(*filter);
            } else ct++;
            filter = clipService.filter(ct);
        }
    }

    for (int i = 0; i < filtersList.count(); i++) {
        clipService.attach(*(filtersList.at(i)));
    }

    m_isBlocked = false;
    refresh();
}

bool Render::mltResizeClipEnd(ItemInfo info, GenTime clipDuration)
{
    m_isBlocked = true;

    Mlt::Service service(m_mltProducer->parent().get_service());

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(info.track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());

    /* // Display playlist info
    kDebug()<<"////////////  BEFORE RESIZE";
    for (int i = 0; i < trackPlaylist.count(); i++) {
    int blankStart = trackPlaylist.clip_start(i);
    int blankDuration = trackPlaylist.clip_length(i) - 1;
    QString blk;
    if (trackPlaylist.is_blank(i)) blk = "(blank)";
    kDebug()<<"CLIP "<<i<<": ("<<blankStart<<'x'<<blankStart + blankDuration<<")"<<blk;
    }*/

    if (trackPlaylist.is_blank_at((int) info.startPos.frames(m_fps))) {
        kDebug() << "////////  ERROR RSIZING BLANK CLIP!!!!!!!!!!!";
        m_isBlocked = false;
        return false;
    }
    int clipIndex = trackPlaylist.get_clip_index_at((int) info.startPos.frames(m_fps));
    kDebug() << "// SELECTED CLIP START: " << trackPlaylist.clip_start(clipIndex);
    Mlt::Producer *clip = trackPlaylist.get_clip(clipIndex);
    int previousStart = clip->get_in();
    int previousDuration = trackPlaylist.clip_length(clipIndex) - 1;
    int newDuration = (int) clipDuration.frames(m_fps) - 1;
    trackPlaylist.resize_clip(clipIndex, previousStart, newDuration + previousStart);
    trackPlaylist.consolidate_blanks(0);
    // skip to next clip
    clipIndex++;
    int diff = newDuration - previousDuration;
    kDebug() << "////////  RESIZE CLIP: " << clipIndex << "( pos: " << info.startPos.frames(25) << "), DIFF: " << diff << ", CURRENT DUR: " << previousDuration << ", NEW DUR: " << newDuration << ", IX: " << clipIndex << ", MAX: " << trackPlaylist.count();
    if (diff > 0) {
        // clip was made longer, trim next blank if there is one.
        if (clipIndex < trackPlaylist.count()) {
            // If this is not the last clip in playlist
            if (trackPlaylist.is_blank(clipIndex)) {
                int blankStart = trackPlaylist.clip_start(clipIndex);
                int blankDuration = trackPlaylist.clip_length(clipIndex) - 1;
                if (diff > blankDuration) kDebug() << "// ERROR blank clip is not large enough to get back required space!!!";
                if (diff - blankDuration == 1) {
                    trackPlaylist.remove(clipIndex);
                } else trackPlaylist.remove_region(blankStart, diff - 1);
            } else {
                kDebug() << "/// RESIZE ERROR, NXT CLIP IS NOT BLK: " << clipIndex;
            }
        }
    } else trackPlaylist.insert_blank(clipIndex, 0 - diff - 1);

    trackPlaylist.consolidate_blanks(0);


    if (info.track != 0 && clipIndex == trackPlaylist.count()) mltCheckLength();
    /*if (QString(clip->parent().get("transparency")).toInt() == 1) {
        //mltResizeTransparency(previousStart, previousStart, previousStart + newDuration, track, QString(clip->parent().get("id")).toInt());
        mltDeleteTransparency(info.startPos.frames(m_fps), info.track, QString(clip->parent().get("id")).toInt());
        ItemInfo transpinfo;
        transpinfo.startPos = info.startPos;
        transpinfo.endPos = info.startPos + clipDuration;
        transpinfo.track = info.track;
        mltAddClipTransparency(transpinfo, info.track - 1, QString(clip->parent().get("id")).toInt());
    }*/
    m_isBlocked = false;
    m_mltConsumer->set("refresh", 1);
    return true;
}

void Render::mltChangeTrackState(int track, bool mute, bool blind)
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));

    if (mute) {
        if (blind) trackProducer.set("hide", 3);
        else trackProducer.set("hide", 2);
    } else if (blind) {
        trackProducer.set("hide", 1);
    } else {
        trackProducer.set("hide", 0);
    }
    tractor.multitrack()->refresh();
    tractor.refresh();
    refresh();
}


bool Render::mltResizeClipCrop(ItemInfo info, GenTime diff)
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    int frameOffset = (int) diff.frames(m_fps);
    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(info.track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    if (trackPlaylist.is_blank_at(info.startPos.frames(m_fps))) {
        kDebug() << "////////  ERROR RSIZING BLANK CLIP!!!!!!!!!!!";
        return false;
    }
    mlt_service_lock(service.get_service());
    int clipIndex = trackPlaylist.get_clip_index_at(info.startPos.frames(m_fps));
    Mlt::Producer *clip = trackPlaylist.get_clip(clipIndex);
    if (clip == NULL) {
        kDebug() << "////////  ERROR RSIZING NULL CLIP!!!!!!!!!!!";
        mlt_service_unlock(service.get_service());
        return false;
    }
    int previousStart = clip->get_in();
    int previousDuration = trackPlaylist.clip_length(clipIndex) - 1;
    m_isBlocked = true;
    trackPlaylist.resize_clip(clipIndex, previousStart + frameOffset, previousStart + previousDuration + frameOffset);
    m_isBlocked = false;
    mlt_service_unlock(service.get_service());
    m_mltConsumer->set("refresh", 1);
    return true;
}

bool Render::mltResizeClipStart(ItemInfo info, GenTime diff)
{
    //kDebug() << "////////  RSIZING CLIP from: "<<info.startPos.frames(25)<<" to "<<diff.frames(25);
    Mlt::Service service(m_mltProducer->parent().get_service());
    int moveFrame = (int) diff.frames(m_fps);
    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(info.track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    if (trackPlaylist.is_blank_at(info.startPos.frames(m_fps))) {
        kDebug() << "////////  ERROR RSIZING BLANK CLIP!!!!!!!!!!!";
        return false;
    }
    mlt_service_lock(service.get_service());
    int clipIndex = trackPlaylist.get_clip_index_at(info.startPos.frames(m_fps));
    Mlt::Producer *clip = trackPlaylist.get_clip(clipIndex);
    if (clip == NULL) {
        kDebug() << "////////  ERROR RSIZING NULL CLIP!!!!!!!!!!!";
        mlt_service_unlock(service.get_service());
        return false;
    }
    int previousStart = clip->get_in();
    int previousDuration = trackPlaylist.clip_length(clipIndex) - 1;
    m_isBlocked = true;
    kDebug() << "RESIZE, old start: " << previousStart << ", PREV DUR: " << previousDuration << ", DIFF: " << moveFrame;
    trackPlaylist.resize_clip(clipIndex, previousStart + moveFrame, previousStart + previousDuration);
    if (moveFrame > 0) trackPlaylist.insert_blank(clipIndex, moveFrame - 1);
    else {
        //int midpos = info.startPos.frames(m_fps) + moveFrame - 1;
        int blankIndex = clipIndex - 1;
        int blankLength = trackPlaylist.clip_length(blankIndex);
        kDebug() << " + resizing blank length " <<  blankLength << ", SIZE DIFF: " << moveFrame;
        if (! trackPlaylist.is_blank(blankIndex)) {
            kDebug() << "WARNING, CLIP TO RESIZE IS NOT BLANK";
        }
        if (blankLength + moveFrame == 0) trackPlaylist.remove(blankIndex);
        else trackPlaylist.resize_clip(blankIndex, 0, blankLength + moveFrame - 1);
    }
    trackPlaylist.consolidate_blanks(0);
    /*if (QString(clip->parent().get("transparency")).toInt() == 1) {
        //mltResizeTransparency(previousStart, (int) moveEnd.frames(m_fps), (int) (moveEnd + out - in).frames(m_fps), track, QString(clip->parent().get("id")).toInt());
        mltDeleteTransparency(info.startPos.frames(m_fps), info.track, QString(clip->parent().get("id")).toInt());
        ItemInfo transpinfo;
        transpinfo.startPos = info.startPos + diff;
        transpinfo.endPos = info.startPos + diff + (info.endPos - info.startPos);
        transpinfo.track = info.track;
        mltAddClipTransparency(transpinfo, info.track - 1, QString(clip->parent().get("id")).toInt());
    }*/
    m_isBlocked = false;
    //m_mltConsumer->set("refresh", 1);
    mlt_service_unlock(service.get_service());
    m_mltConsumer->set("refresh", 1);
    return true;
}

bool Render::mltMoveClip(int startTrack, int endTrack, GenTime moveStart, GenTime moveEnd, Mlt::Producer *prod)
{
    return mltMoveClip(startTrack, endTrack, (int) moveStart.frames(m_fps), (int) moveEnd.frames(m_fps), prod);
}


void Render::mltUpdateClipProducer(int track, int pos, Mlt::Producer *prod)
{
    if (prod == NULL || !prod->is_valid()) {
        kDebug() << "// Warning, CLIP on track " << track << ", at: " << pos << " is invalid, cannot update it!!!";
        return;
    }
    kDebug() << "NEW PROD ID: " << prod->get("id");
    m_mltConsumer->set("refresh", 0);
    kDebug() << "// TRYING TO UPDATE CLIP at: " << pos << ", TK: " << track;
    mlt_service_lock(m_mltConsumer->get_service());
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) kWarning() << "// TRACTOR PROBLEM";

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(track));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    int clipIndex = trackPlaylist.get_clip_index_at(pos + 1);
    Mlt::Producer clipProducer(trackPlaylist.replace_with_blank(clipIndex));
    if (clipProducer.is_blank()) {
        kDebug() << "// ERROR UPDATING CLIP PROD";
        mlt_service_unlock(m_mltConsumer->get_service());
        m_isBlocked = false;
        return;
    }
    Mlt::Producer *clip = prod->cut(clipProducer.get_in(), clipProducer.get_out());

    // move all effects to the correct producer
    Mlt::Service clipService(clipProducer.get_service());
    Mlt::Service newClipService(clip->get_service());

    int ct = 0;
    Mlt::Filter *filter = clipService.filter(ct);
    while (filter) {
        if (filter->get("kdenlive_ix") != 0) {
            clipService.detach(*filter);
            newClipService.attach(*filter);
        } else ct++;
        filter = clipService.filter(ct);
    }

    trackPlaylist.insert_at(pos, clip, 1);
    mlt_service_unlock(m_mltConsumer->get_service());
    m_isBlocked = false;
}

bool Render::mltMoveClip(int startTrack, int endTrack, int moveStart, int moveEnd, Mlt::Producer *prod)
{
    m_isBlocked = true;

    m_mltConsumer->set("refresh", 0);
    mlt_service_lock(m_mltConsumer->get_service());
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) kWarning() << "// TRACTOR PROBLEM";

    Mlt::Tractor tractor(service);
    Mlt::Producer trackProducer(tractor.track(startTrack));
    Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
    int clipIndex = trackPlaylist.get_clip_index_at(moveStart + 1);
    kDebug() << "//////  LOOKING FOR CLIP TO MOVE, INDEX: " << clipIndex;
    bool checkLength = false;
    if (endTrack == startTrack) {
        Mlt::Producer clipProducer(trackPlaylist.replace_with_blank(clipIndex));
        if (!trackPlaylist.is_blank_at(moveEnd) || clipProducer.is_blank()) {
            // error, destination is not empty
            if (!trackPlaylist.is_blank_at(moveEnd)) trackPlaylist.insert_at(moveStart, clipProducer, 1);
            //int ix = trackPlaylist.get_clip_index_at(moveEnd);
            kDebug() << "// ERROR MOVING CLIP TO : " << moveEnd;
            mlt_service_unlock(m_mltConsumer->get_service());
            m_isBlocked = false;
            return false;
        } else {
            trackPlaylist.consolidate_blanks(0);
            int newIndex = trackPlaylist.insert_at(moveEnd, clipProducer, 1);
            /*if (QString(clipProducer.parent().get("transparency")).toInt() == 1) {
            mltMoveTransparency(moveStart, moveEnd, startTrack, endTrack, QString(clipProducer.parent().get("id")).toInt());
            }*/
            if (newIndex + 1 == trackPlaylist.count()) checkLength = true;
        }
        //mlt_service_unlock(service.get_service());
    } else {
        Mlt::Producer destTrackProducer(tractor.track(endTrack));
        Mlt::Playlist destTrackPlaylist((mlt_playlist) destTrackProducer.get_service());
        if (!destTrackPlaylist.is_blank_at(moveEnd)) {
            // error, destination is not empty
            mlt_service_unlock(m_mltConsumer->get_service());
            m_isBlocked = false;
            return false;
        } else {
            Mlt::Producer clipProducer(trackPlaylist.replace_with_blank(clipIndex));
            if (clipProducer.is_blank()) {
                // error, destination is not empty
                //int ix = trackPlaylist.get_clip_index_at(moveEnd);
                kDebug() << "// ERROR MOVING CLIP TO : " << moveEnd;
                mlt_service_unlock(m_mltConsumer->get_service());
                m_isBlocked = false;
                return false;
            }
            trackPlaylist.consolidate_blanks(0);
            destTrackPlaylist.consolidate_blanks(1);
            Mlt::Producer *clip;
            // check if we are moving a slowmotion producer
            QString serv = clipProducer.parent().get("mlt_service");
            QString currentid = clipProducer.parent().get("id");
            if (serv == "framebuffer" || currentid.endsWith("_video")) {
                clip = &clipProducer;
            } else {
                if (prod == NULL) {
                    // Special case: prod is null when using placeholder clips.
                    // in that case, use the producer existing in playlist. Note that
                    // it will bypass the one producer per track logic and might cause
                    // Sound cracks if clip is moved so that it overlaps another copy of itself
                    clip = clipProducer.cut(clipProducer.get_in(), clipProducer.get_out());
                } else clip = prod->cut(clipProducer.get_in(), clipProducer.get_out());
            }

            // move all effects to the correct producer
            Mlt::Service clipService(clipProducer.get_service());
            Mlt::Service newClipService(clip->get_service());

            int ct = 0;
            Mlt::Filter *filter = clipService.filter(ct);
            while (filter) {
                if (filter->get("kdenlive_ix") != 0) {
                    clipService.detach(*filter);
                    newClipService.attach(*filter);
                } else ct++;
                filter = clipService.filter(ct);
            }

            int newIndex = destTrackPlaylist.insert_at(moveEnd, clip, 1);
            destTrackPlaylist.consolidate_blanks(0);
            /*if (QString(clipProducer.parent().get("transparency")).toInt() == 1) {
                kDebug() << "//////// moving clip transparency";
                mltMoveTransparency(moveStart, moveEnd, startTrack, endTrack, QString(clipProducer.parent().get("id")).toInt());
            }*/
            if (clipIndex > trackPlaylist.count()) checkLength = true;
            else if (newIndex + 1 == destTrackPlaylist.count()) checkLength = true;
        }
    }

    if (checkLength) mltCheckLength();
    mlt_service_unlock(m_mltConsumer->get_service());
    m_isBlocked = false;
    m_mltConsumer->set("refresh", 1);
    return true;
}

bool Render::mltMoveTransition(QString type, int startTrack, int newTrack, int newTransitionTrack, GenTime oldIn, GenTime oldOut, GenTime newIn, GenTime newOut)
{
    int new_in = (int)newIn.frames(m_fps);
    int new_out = (int)newOut.frames(m_fps) - 1;
    if (new_in >= new_out) return false;

    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);

    mlt_service_lock(service.get_service());
    m_mltConsumer->set("refresh", 0);
    m_isBlocked = true;

    mlt_service serv = m_mltProducer->parent().get_service();
    mlt_service nextservice = mlt_service_get_producer(serv);
    mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
    QString mlt_type = mlt_properties_get(properties, "mlt_type");
    QString resource = mlt_properties_get(properties, "mlt_service");
    int old_pos = (int)(oldIn.frames(m_fps) + oldOut.frames(m_fps)) / 2;

    while (mlt_type == "transition") {
        mlt_transition tr = (mlt_transition) nextservice;
        int currentTrack = mlt_transition_get_b_track(tr);
        int currentIn = (int) mlt_transition_get_in(tr);
        int currentOut = (int) mlt_transition_get_out(tr);

        if (resource == type && startTrack == currentTrack && currentIn <= old_pos && currentOut >= old_pos) {
            mlt_transition_set_in_and_out(tr, new_in, new_out);
            if (newTrack - startTrack != 0) {
                kDebug() << "///// TRANSITION CHANGE TRACK. CUrrent (b): " << currentTrack << 'x' << mlt_transition_get_a_track(tr) << ", NEw: " << newTrack << 'x' << newTransitionTrack;

                mlt_properties properties = MLT_TRANSITION_PROPERTIES(tr);
                mlt_properties_set_int(properties, "a_track", newTransitionTrack);
                mlt_properties_set_int(properties, "b_track", newTrack);
                //kDebug() << "set new start & end :" << new_in << new_out<< "TR OFFSET: "<<trackOffset<<", TRACKS: "<<mlt_transition_get_a_track(tr)<<'x'<<mlt_transition_get_b_track(tr);
            }
            break;
        }
        nextservice = mlt_service_producer(nextservice);
        if (nextservice == NULL) break;
        properties = MLT_SERVICE_PROPERTIES(nextservice);
        mlt_type = mlt_properties_get(properties, "mlt_type");
        resource = mlt_properties_get(properties, "mlt_service");
    }
    m_isBlocked = false;
    mlt_service_unlock(service.get_service());
    m_mltConsumer->set("refresh", 1);
    return true;
}

void Render::mltUpdateTransition(QString oldTag, QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml)
{
    // kDebug() << "update transition"  << tag << " at pos " << in.frames(25);
    if (oldTag == tag) mltUpdateTransitionParams(tag, a_track, b_track, in, out, xml);
    else {
        mltDeleteTransition(oldTag, a_track, b_track, in, out, xml, false);
        mltAddTransition(tag, a_track, b_track, in, out, xml);
    }
    //mltSavePlaylist();
}

void Render::mltUpdateTransitionParams(QString type, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml)
{
    m_isBlocked = true;
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);

    //m_mltConsumer->set("refresh", 0);
    mlt_service serv = m_mltProducer->parent().get_service();

    mlt_service nextservice = mlt_service_get_producer(serv);
    mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
    QString mlt_type = mlt_properties_get(properties, "mlt_type");
    QString resource = mlt_properties_get(properties, "mlt_service");
    int in_pos = (int) in.frames(m_fps);
    int out_pos = (int) out.frames(m_fps) - 1;

    while (mlt_type == "transition") {
        mlt_transition tr = (mlt_transition) nextservice;
        int currentTrack = mlt_transition_get_b_track(tr);
        int currentBTrack = mlt_transition_get_a_track(tr);
        int currentIn = (int) mlt_transition_get_in(tr);
        int currentOut = (int) mlt_transition_get_out(tr);

        // kDebug()<<"Looking for transition : " << currentIn <<'x'<<currentOut<< ", OLD oNE: "<<in_pos<<'x'<<out_pos;

        if (resource == type && b_track == currentTrack && currentIn == in_pos && currentOut == out_pos) {
            QMap<QString, QString> map = mltGetTransitionParamsFromXml(xml);
            QMap<QString, QString>::Iterator it;
            QString key;
            mlt_properties transproperties = MLT_TRANSITION_PROPERTIES(tr);
            mlt_properties_set_int(transproperties, "force_track", xml.attribute("force_track").toInt());
            if (currentBTrack != a_track) {
                mlt_properties_set_int(properties, "a_track", a_track);
            }
            for (it = map.begin(); it != map.end(); ++it) {
                key = it.key();
                char *name = decodedString(key);
                char *value = decodedString(it.value());
                mlt_properties_set(transproperties, name, value);
                //kDebug() << " ------  UPDATING TRANS PARAM: " << name << ": " << value;
                //filter->set("kdenlive_id", id);
                delete[] name;
                delete[] value;
            }
            break;
        }
        nextservice = mlt_service_producer(nextservice);
        if (nextservice == NULL) break;
        properties = MLT_SERVICE_PROPERTIES(nextservice);
        mlt_type = mlt_properties_get(properties, "mlt_type");
        resource = mlt_properties_get(properties, "mlt_service");
    }
    m_isBlocked = false;
    m_mltConsumer->set("refresh", 1);
}

void Render::mltDeleteTransition(QString tag, int /*a_track*/, int b_track, GenTime in, GenTime out, QDomElement /*xml*/, bool /*do_refresh*/)
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);
    Mlt::Field *field = tractor.field();

    //if (do_refresh) m_mltConsumer->set("refresh", 0);
    mlt_service serv = m_mltProducer->parent().get_service();

    mlt_service nextservice = mlt_service_get_producer(serv);
    mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
    QString mlt_type = mlt_properties_get(properties, "mlt_type");
    QString resource = mlt_properties_get(properties, "mlt_service");

    const int old_pos = (int)((in + out).frames(m_fps) / 2);

    while (mlt_type == "transition") {
        mlt_transition tr = (mlt_transition) nextservice;
        int currentTrack = mlt_transition_get_b_track(tr);
        int currentIn = (int) mlt_transition_get_in(tr);
        int currentOut = (int) mlt_transition_get_out(tr);
        //kDebug() << "// FOUND EXISTING TRANS, IN: " << currentIn << ", OUT: " << currentOut << ", TRACK: " << currentTrack;

        if (resource == tag && b_track == currentTrack && currentIn <= old_pos && currentOut >= old_pos) {
            mlt_field_disconnect_service(field->get_field(), nextservice);
            break;
        }
        nextservice = mlt_service_producer(nextservice);
        if (nextservice == NULL) break;
        properties = MLT_SERVICE_PROPERTIES(nextservice);
        mlt_type = mlt_properties_get(properties, "mlt_type");
        resource = mlt_properties_get(properties, "mlt_service");
    }
    //if (do_refresh) m_mltConsumer->set("refresh", 1);
}

QMap<QString, QString> Render::mltGetTransitionParamsFromXml(QDomElement xml)
{
    QDomNodeList attribs = xml.elementsByTagName("parameter");
    QMap<QString, QString> map;
    for (int i = 0;i < attribs.count();i++) {
        QDomElement e = attribs.item(i).toElement();
        QString name = e.attribute("name");
        //kDebug()<<"-- TRANSITION PARAM: "<<name<<" = "<< e.attribute("name")<<" / " << e.attribute("value");
        map[name] = e.attribute("default");
        if (!e.attribute("value").isEmpty()) {
            map[name] = e.attribute("value");
        }
        if (!e.attribute("factor").isEmpty() && e.attribute("factor").toDouble() > 0) {
            map[name] = QString::number(map[name].toDouble() / e.attribute("factor").toDouble());
            //map[name]=map[name].replace(".",","); //FIXME how to solve locale conversion of . ,
        }

        if (e.attribute("namedesc").contains(';')) {
            QString format = e.attribute("format");
            QStringList separators = format.split("%d", QString::SkipEmptyParts);
            QStringList values = e.attribute("value").split(QRegExp("[,:;x]"));
            QString neu;
            QTextStream txtNeu(&neu);
            if (values.size() > 0)
                txtNeu << (int)values[0].toDouble();
            int i = 0;
            for (i = 0;i < separators.size() && i + 1 < values.size();i++) {
                txtNeu << separators[i];
                txtNeu << (int)(values[i+1].toDouble());
            }
            if (i < separators.size())
                txtNeu << separators[i];
            map[e.attribute("name")] = neu;
        }

    }
    return map;
}

void Render::mltAddClipTransparency(ItemInfo info, int transitiontrack, int id)
{
    kDebug() << "/////////  ADDING CLIP TRANSPARENCY AT: " << info.startPos.frames(25);
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);
    Mlt::Field *field = tractor.field();

    Mlt::Transition *transition = new Mlt::Transition(*m_mltProfile, "composite");
    transition->set_in_and_out((int) info.startPos.frames(m_fps), (int) info.endPos.frames(m_fps) - 1);
    transition->set("transparency", id);
    transition->set("fill", 1);
    transition->set("internal_added", 237);
    field->plant_transition(*transition, transitiontrack, info.track);
    refresh();
}

void Render::mltDeleteTransparency(int pos, int track, int id)
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);
    Mlt::Field *field = tractor.field();

    //if (do_refresh) m_mltConsumer->set("refresh", 0);
    mlt_service serv = m_mltProducer->parent().get_service();

    mlt_service nextservice = mlt_service_get_producer(serv);
    mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
    QString mlt_type = mlt_properties_get(properties, "mlt_type");
    QString resource = mlt_properties_get(properties, "mlt_service");

    while (mlt_type == "transition") {
        mlt_transition tr = (mlt_transition) nextservice;
        int currentTrack = mlt_transition_get_b_track(tr);
        int currentIn = (int) mlt_transition_get_in(tr);
        int currentOut = (int) mlt_transition_get_out(tr);
        int transitionId = QString(mlt_properties_get(properties, "transparency")).toInt();
        kDebug() << "// FOUND EXISTING TRANS, IN: " << currentIn << ", OUT: " << currentOut << ", TRACK: " << currentTrack;

        if (resource == "composite" && track == currentTrack && currentIn == pos && transitionId == id) {
            //kDebug() << " / / / / /DELETE TRANS DOOOMNE";
            mlt_field_disconnect_service(field->get_field(), nextservice);
            break;
        }
        nextservice = mlt_service_producer(nextservice);
        if (nextservice == NULL) break;
        properties = MLT_SERVICE_PROPERTIES(nextservice);
        mlt_type = mlt_properties_get(properties, "mlt_type");
        resource = mlt_properties_get(properties, "mlt_service");
    }
    //if (do_refresh) m_mltConsumer->set("refresh", 1);
}

void Render::mltResizeTransparency(int oldStart, int newStart, int newEnd, int track, int id)
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);

    mlt_service_lock(service.get_service());
    m_mltConsumer->set("refresh", 0);
    m_isBlocked = true;

    mlt_service serv = m_mltProducer->parent().get_service();
    mlt_service nextservice = mlt_service_get_producer(serv);
    mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
    QString mlt_type = mlt_properties_get(properties, "mlt_type");
    QString resource = mlt_properties_get(properties, "mlt_service");
    kDebug() << "// resize transpar from: " << oldStart << ", TO: " << newStart << 'x' << newEnd << ", " << track << ", " << id;
    while (mlt_type == "transition") {
        mlt_transition tr = (mlt_transition) nextservice;
        int currentTrack = mlt_transition_get_b_track(tr);
        int currentIn = (int) mlt_transition_get_in(tr);
        //mlt_properties props = MLT_TRANSITION_PROPERTIES(tr);
        int transitionId = QString(mlt_properties_get(properties, "transparency")).toInt();
        kDebug() << "// resize transpar current in: " << currentIn << ", Track: " << currentTrack << ", id: " << id << 'x' << transitionId ;
        if (resource == "composite" && track == currentTrack && currentIn == oldStart && transitionId == id) {
            kDebug() << " / / / / /RESIZE TRANS TO: " << newStart << 'x' << newEnd;
            mlt_transition_set_in_and_out(tr, newStart, newEnd);
            break;
        }
        nextservice = mlt_service_producer(nextservice);
        if (nextservice == NULL) break;
        properties = MLT_SERVICE_PROPERTIES(nextservice);
        mlt_type = mlt_properties_get(properties, "mlt_type");
        resource = mlt_properties_get(properties, "mlt_service");
    }
    m_isBlocked = false;
    mlt_service_unlock(service.get_service());
    m_mltConsumer->set("refresh", 1);

}

void Render::mltMoveTransparency(int startTime, int endTime, int startTrack, int endTrack, int id)
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    Mlt::Tractor tractor(service);

    mlt_service_lock(service.get_service());
    m_mltConsumer->set("refresh", 0);
    m_isBlocked = true;

    mlt_service serv = m_mltProducer->parent().get_service();
    mlt_service nextservice = mlt_service_get_producer(serv);
    mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
    QString mlt_type = mlt_properties_get(properties, "mlt_type");
    QString resource = mlt_properties_get(properties, "mlt_service");

    while (mlt_type == "transition") {
        mlt_transition tr = (mlt_transition) nextservice;
        int currentTrack = mlt_transition_get_b_track(tr);
        int currentaTrack = mlt_transition_get_a_track(tr);
        int currentIn = (int) mlt_transition_get_in(tr);
        int currentOut = (int) mlt_transition_get_out(tr);
        //mlt_properties properties = MLT_TRANSITION_PROPERTIES(tr);
        int transitionId = QString(mlt_properties_get(properties, "transparency")).toInt();
        //kDebug()<<" + TRANSITION "<<id<<" == "<<transitionId<<", START TMIE: "<<currentIn<<", LOOK FR: "<<startTime<<", TRACK: "<<currentTrack<<'x'<<startTrack;
        if (resource == "composite" && transitionId == id && startTime == currentIn && startTrack == currentTrack) {
            kDebug() << "//////MOVING";
            mlt_transition_set_in_and_out(tr, endTime, endTime + currentOut - currentIn);
            if (endTrack != startTrack) {
                mlt_properties properties = MLT_TRANSITION_PROPERTIES(tr);
                mlt_properties_set_int(properties, "a_track", currentaTrack + endTrack - currentTrack);
                mlt_properties_set_int(properties, "b_track", endTrack);
            }
            break;
        }
        nextservice = mlt_service_producer(nextservice);
        if (nextservice == NULL) break;
        properties = MLT_SERVICE_PROPERTIES(nextservice);
        mlt_type = mlt_properties_get(properties, "mlt_type");
        resource = mlt_properties_get(properties, "mlt_service");
    }
    m_isBlocked = false;
    mlt_service_unlock(service.get_service());
    m_mltConsumer->set("refresh", 1);
}


bool Render::mltAddTransition(QString tag, int a_track, int b_track, GenTime in, GenTime out, QDomElement xml, bool /*do_refresh*/)
{
    if (in >= out) return false;
    QMap<QString, QString> args = mltGetTransitionParamsFromXml(xml);
    Mlt::Service service(m_mltProducer->parent().get_service());

    Mlt::Tractor tractor(service);
    Mlt::Field *field = tractor.field();

    char *transId = decodedString(tag);
    Mlt::Transition *transition = new Mlt::Transition(*m_mltProfile, transId);
    if (out != GenTime())
        transition->set_in_and_out((int) in.frames(m_fps), (int) out.frames(m_fps) - 1);
    QMap<QString, QString>::Iterator it;
    QString key;
    if (xml.attribute("automatic") == "1") transition->set("automatic", 1);
    //kDebug() << " ------  ADDING TRANSITION PARAMs: " << args.count();

    for (it = args.begin(); it != args.end(); ++it) {
        key = it.key();
        char *name = decodedString(key);
        char *value = decodedString(it.value());
        if (it.value().isEmpty() == false) transition->set(name, value);
        //kDebug() << " ------  ADDING TRANS PARAM: " << name << ": " << value;
        //filter->set("kdenlive_id", id);
        delete[] name;
        delete[] value;
    }
    // attach filter to the clip
    field->plant_transition(*transition, a_track, b_track);
    delete[] transId;
    refresh();
    return true;
}

void Render::mltSavePlaylist()
{
    kWarning() << "// UPDATING PLAYLIST TO DISK++++++++++++++++";
    Mlt::Consumer fileConsumer(*m_mltProfile, "westley");
    fileConsumer.set("resource", "/tmp/playlist.westley");

    Mlt::Service service(m_mltProducer->get_service());

    fileConsumer.connect(service);
    fileConsumer.start();
}

QList <Mlt::Producer *> Render::producersList()
{
    QList <Mlt::Producer *> prods;
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) return prods;
    Mlt::Tractor tractor(service);
    QStringList ids;

    int trackNb = tractor.count();
    for (int t = 1; t < trackNb; t++) {
        Mlt::Producer *tt = tractor.track(t);
        Mlt::Producer trackProducer(tt);
        delete tt;
        Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
        int clipNb = trackPlaylist.count();
        //kDebug() << "// PARSING SCENE TRACK: " << t << ", CLIPS: " << clipNb;
        for (int i = 0; i < clipNb; i++) {
            Mlt::Producer *c = trackPlaylist.get_clip(i);
            Mlt::Producer *nprod = new Mlt::Producer(c->get_parent());
            if (nprod) {
                if (!nprod->is_blank() && !ids.contains(nprod->get("id"))) {
                    ids.append(nprod->get("id"));
                    prods.append(nprod);
                } else delete nprod;
            }
            delete c;
        }
    }
    return prods;
}

void Render::fillSlowMotionProducers()
{
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) return;

    Mlt::Tractor tractor(service);

    int trackNb = tractor.count();
    for (int t = 1; t < trackNb; t++) {
        Mlt::Producer *tt = tractor.track(t);
        Mlt::Producer trackProducer(tt);
        delete tt;
        Mlt::Playlist trackPlaylist((mlt_playlist) trackProducer.get_service());
        int clipNb = trackPlaylist.count();
        for (int i = 0; i < clipNb; i++) {
            Mlt::Producer *c = trackPlaylist.get_clip(i);
            Mlt::Producer *nprod = new Mlt::Producer(c->get_parent());
            if (nprod) {
                QString id = nprod->get("id");
                if (id.startsWith("slowmotion:") && !nprod->is_blank()) {
                    // this is a slowmotion producer, add it to the list
                    QString url = QString::fromUtf8(nprod->get("resource"));
                    if (!m_slowmotionProducers.contains(url)) {
                        m_slowmotionProducers.insert(url, nprod);
                    }
                } else delete nprod;
            }
            delete c;
        }
    }
}

void Render::mltInsertTrack(int ix, bool videoTrack)
{
    blockSignals(true);
    m_isBlocked = true;

    m_mltConsumer->set("refresh", 0);
    mlt_service_lock(m_mltConsumer->get_service());
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) kWarning() << "// TRACTOR PROBLEM";

    Mlt::Tractor tractor(service);

    Mlt::Playlist playlist;// = new Mlt::Playlist();
    int ct = tractor.count();
    // kDebug() << "// TRACK INSERT: " << ix << ", MAX: " << ct;
    int pos = ix;
    if (pos < ct) {
        Mlt::Producer *prodToMove = new Mlt::Producer(tractor.track(pos));
        tractor.set_track(playlist, pos);
        Mlt::Producer newProd(tractor.track(pos));
        if (!videoTrack) newProd.set("hide", 1);
        pos++;
        for (; pos <= ct; pos++) {
            Mlt::Producer *prodToMove2 = new Mlt::Producer(tractor.track(pos));
            tractor.set_track(*prodToMove, pos);
            prodToMove = prodToMove2;
        }
    } else {
        tractor.set_track(playlist, ix);
        Mlt::Producer newProd(tractor.track(ix));
        if (!videoTrack) newProd.set("hide", 1);
    }

    // Move transitions
    mlt_service serv = m_mltProducer->parent().get_service();
    mlt_service nextservice = mlt_service_get_producer(serv);
    mlt_properties properties = MLT_SERVICE_PROPERTIES(nextservice);
    QString mlt_type = mlt_properties_get(properties, "mlt_type");
    QString resource = mlt_properties_get(properties, "mlt_service");

    while (mlt_type == "transition") {
        if (resource != "mix") {
            mlt_transition tr = (mlt_transition) nextservice;
            int currentTrack = mlt_transition_get_b_track(tr);
            int currentaTrack = mlt_transition_get_a_track(tr);
            mlt_properties properties = MLT_TRANSITION_PROPERTIES(tr);

            if (currentTrack >= ix) {
                mlt_properties_set_int(properties, "b_track", currentTrack + 1);
                mlt_properties_set_int(properties, "a_track", currentaTrack + 1);
            }
        }
        nextservice = mlt_service_producer(nextservice);
        if (nextservice == NULL) break;
        properties = MLT_SERVICE_PROPERTIES(nextservice);
        mlt_type = mlt_properties_get(properties, "mlt_type");
        resource = mlt_properties_get(properties, "mlt_service");
    }

    // Add audio mix transition to last track
    Mlt::Field *field = tractor.field();
    Mlt::Transition *transition = new Mlt::Transition(*m_mltProfile, "mix");
    //transition->set("mlt_service", "mix");
    transition->set("a_track", 1);
    transition->set("b_track", ct);
    transition->set("always_active", 1);
    transition->set("internal_added", 237);
    transition->set("combine", 1);
    field->plant_transition(*transition, 1, ct);

    mlt_service_unlock(m_mltConsumer->get_service());
    m_isBlocked = false;
    blockSignals(false);
}


void Render::mltDeleteTrack(int ix)
{
    QDomDocument doc;
    doc.setContent(sceneList(), false);
    int tracksCount = doc.elementsByTagName("track").count() - 1;
    QDomNode track = doc.elementsByTagName("track").at(ix);
    QDomNode tractor = doc.elementsByTagName("tractor").at(0);
    QDomNodeList transitions = doc.elementsByTagName("transition");
    for (int i = 0; i < transitions.count(); i++) {
        QDomElement e = transitions.at(i).toElement();
        QDomNodeList props = e.elementsByTagName("property");
        QMap <QString, QString> mappedProps;
        for (int j = 0; j < props.count(); j++) {
            QDomElement f = props.at(j).toElement();
            mappedProps.insert(f.attribute("name"), f.firstChild().nodeValue());
        }
        if (mappedProps.value("mlt_service") == "mix" && mappedProps.value("b_track").toInt() == tracksCount) {
            tractor.removeChild(transitions.at(i));
        } else if (mappedProps.value("mlt_service") != "mix" && mappedProps.value("b_track").toInt() >= ix) {
            // Transition needs to be moved
            int a_track = mappedProps.value("a_track").toInt();
            int b_track = mappedProps.value("b_track").toInt();
            if (a_track > 0) a_track --;
            if (b_track > 0) b_track --;
            for (int j = 0; j < props.count(); j++) {
                QDomElement f = props.at(j).toElement();
                if (f.attribute("name") == "a_track") f.firstChild().setNodeValue(QString::number(a_track));
                else if (f.attribute("name") == "b_track") f.firstChild().setNodeValue(QString::number(b_track));
            }

        }
    }
    tractor.removeChild(track);
    setSceneList(doc.toString(), m_framePosition);
    mltCheckLength();
}


void Render::updatePreviewSettings()
{
    kDebug() << "////// RESTARTING CONSUMER";
    if (!m_mltConsumer || !m_mltProducer) return;
    if (m_mltProducer->get_playtime() == 0) return;
    Mlt::Service service(m_mltProducer->parent().get_service());
    if (service.type() != tractor_type) return;

    //m_mltConsumer->set("refresh", 0);
    if (!m_mltConsumer->is_stopped()) m_mltConsumer->stop();
    m_mltConsumer->purge();
    QString scene = sceneList();
    int pos = 0;
    if (m_mltProducer) {
        pos = m_mltProducer->position();
        delete m_mltProducer;
    }
    m_mltProducer = NULL;
    setSceneList(scene, pos);
}

#include "renderer.moc"


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