git.sesse.net Git - mlt/blob - src/modules/qimage/kdenlivetitle_wrapper.cpp

   1 /*
   2  * kdenlivetitle_wrapper.cpp -- kdenlivetitle wrapper
   3  * Copyright (c) 2009 Marco Gittler <g.marco@freenet.de>
   4  * Copyright (c) 2009 Jean-Baptiste Mardelle <jb@kdenlive.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include "kdenlivetitle_wrapper.h"
  22
  23 #include <QtGui/QImage>
  24 #include <QtGui/QPainter>
  25 #include <QtCore/QDebug>
  26 #include <QtGui/QApplication>
  27 #include <QtCore/QMutex>
  28 #include <QtGui/QGraphicsScene>
  29 #include <QtGui/QGraphicsTextItem>
  30 #include <QtSvg/QGraphicsSvgItem>
  31 #include <QtSvg/QSvgRenderer>
  32 #include <QtGui/QTextCursor>
  33 #include <QtGui/QTextDocument>
  34 #include <QtGui/QStyleOptionGraphicsItem>
  35
  36 #include <QtCore/QString>
  37
  38 #include <QtXml/QDomElement>
  39 #include <QtCore/QRectF>
  40 #include <QtGui/QColor>
  41 #include <QtGui/QWidget>
  42 #include <framework/mlt_log.h>
  43
  44 #if QT_VERSION >= 0x040600
  45 #include <QtGui/QGraphicsEffect>
  46 #include <QtGui/QGraphicsBlurEffect>
  47 #include <QtGui/QGraphicsDropShadowEffect>
  48 #endif
  49
  50 static QApplication *app = NULL;
  51
  52 class ImageItem: public QGraphicsItem
  53 {
  54 public:
  55     ImageItem(QImage img)
  56     {
  57         m_img = img;
  58     }
  59     QImage m_img;
  60
  61
  62 protected:
  63
  64 virtual QRectF boundingRect() const
  65 {
  66     return QRectF(0, 0, m_img.width(), m_img.height());
  67 }
  68
  69 virtual void paint( QPainter *painter,
  70                        const QStyleOptionGraphicsItem * /*option*/,
  71                        QWidget* )
  72 {
  73     painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
  74     painter->drawImage(QPoint(), m_img);
  75 }
  76 };
  77
  78
  79 QString rectTransform( QString s, QTransform t )
  80 {
  81         QStringList l = s.split( ',' );
  82         return QString::number(l.at(0).toDouble() * t.m11()) + ',' + QString::number(l.at(1).toDouble() * t.m22()) + ',' + QString::number(l.at(2).toDouble() * t.m11()) + ',' + QString::number(l.at(3).toDouble() * t.m22());
  83 }
  84
  85 QString colorToString( const QColor& c )
  86 {
  87         QString ret = "%1,%2,%3,%4";
  88         ret = ret.arg( c.red() ).arg( c.green() ).arg( c.blue() ).arg( c.alpha() );
  89         return ret;
  90 }
  91
  92 QString rectFToString( const QRectF& c )
  93 {
  94         QString ret = "%1,%2,%3,%4";
  95         ret = ret.arg( c.top() ).arg( c.left() ).arg( c.width() ).arg( c.height() );
  96         return ret;
  97 }
  98
  99 QRectF stringToRect( const QString & s )
 100 {
 101
 102         QStringList l = s.split( ',' );
 103         if ( l.size() < 4 )
 104                 return QRectF();
 105         return QRectF( l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(), l.at( 3 ).toDouble() ).normalized();
 106 }
 107
 108 QColor stringToColor( const QString & s )
 109 {
 110         QStringList l = s.split( ',' );
 111         if ( l.size() < 4 )
 112                 return QColor();
 113         return QColor( l.at( 0 ).toInt(), l.at( 1 ).toInt(), l.at( 2 ).toInt(), l.at( 3 ).toInt() );
 114         ;
 115 }
 116 QTransform stringToTransform( const QString& s )
 117 {
 118         QStringList l = s.split( ',' );
 119         if ( l.size() < 9 )
 120                 return QTransform();
 121         return QTransform(
 122                    l.at( 0 ).toDouble(), l.at( 1 ).toDouble(), l.at( 2 ).toDouble(),
 123                    l.at( 3 ).toDouble(), l.at( 4 ).toDouble(), l.at( 5 ).toDouble(),
 124                    l.at( 6 ).toDouble(), l.at( 7 ).toDouble(), l.at( 8 ).toDouble()
 125                );
 126 }
 127
 128 static void qscene_delete( void *data )
 129 {
 130         QGraphicsScene *scene = ( QGraphicsScene * )data;
 131         if (scene) delete scene;
 132         scene = NULL;
 133 }
 134
 135
 136 void loadFromXml( mlt_producer producer, QGraphicsScene *scene, const char *templateXml, const char *templateText )
 137 {
 138         scene->clear();
 139         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 140         QDomDocument doc;
 141         QString data = QString::fromUtf8(templateXml);
 142         QString replacementText = QString::fromUtf8(templateText);
 143         doc.setContent(data);
 144         QDomElement title = doc.documentElement();
 145
 146         // Check for invalid title
 147         if ( title.isNull() || title.tagName() != "kdenlivetitle" ) return;
 148
 149         int originalWidth;
 150         int originalHeight;
 151         if ( title.hasAttribute("width") ) {
 152             originalWidth = title.attribute("width").toInt();
 153             originalHeight = title.attribute("height").toInt();
 154             scene->setSceneRect(0, 0, originalWidth, originalHeight);
 155         }
 156         else {
 157             originalWidth = scene->sceneRect().width();
 158             originalHeight = scene->sceneRect().height();
 159         }
 160         if ( title.hasAttribute( "out" ) ) {
 161             mlt_properties_set_position( producer_props, "_animation_out", title.attribute( "out" ).toDouble() );
 162         }
 163         else {
 164             mlt_properties_set_position( producer_props, "_animation_out", mlt_producer_get_out( producer ) );
 165         }
 166
 167         mlt_properties_set_int( producer_props, "_original_width", originalWidth );
 168         mlt_properties_set_int( producer_props, "_original_height", originalHeight );
 169
 170         QDomNodeList items = title.elementsByTagName("item");
 171         for ( int i = 0; i < items.count(); i++ )
 172         {
 173                 QGraphicsItem *gitem = NULL;
 174                 int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 175                 if ( zValue > -1000 )
 176                 {
 177                         if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsTextItem" )
 178                         {
 179                                 QDomNamedNodeMap txtProperties = items.item( i ).namedItem( "content" ).attributes();
 180                                 QFont font( txtProperties.namedItem( "font" ).nodeValue() );
 181                                         QDomNode node = txtProperties.namedItem( "font-bold" );
 182                                 if ( !node.isNull() )
 183                                 {
 184                                 // Old: Bold/Not bold.
 185                                         font.setBold( node.nodeValue().toInt() );
 186                                 }
 187                                 else
 188                                 {
 189                                         // New: Font weight (QFont::)
 190                                         font.setWeight( txtProperties.namedItem( "font-weight" ).nodeValue().toInt() );
 191                                 }
 192                                         font.setItalic( txtProperties.namedItem( "font-italic" ).nodeValue().toInt() );
 193                                 font.setUnderline( txtProperties.namedItem( "font-underline" ).nodeValue().toInt() );
 194                                 // Older Kdenlive version did not store pixel size but point size
 195                                 if ( txtProperties.namedItem( "font-pixel-size" ).isNull() )
 196                                 {
 197                                         QFont f2;
 198                                         f2.setPointSize( txtProperties.namedItem( "font-size" ).nodeValue().toInt() );
 199                                         font.setPixelSize( QFontInfo( f2 ).pixelSize() );
 200                                 }
 201                                 else
 202                                         font.setPixelSize( txtProperties.namedItem( "font-pixel-size" ).nodeValue().toInt() );
 203                                 QColor col( stringToColor( txtProperties.namedItem( "font-color" ).nodeValue() ) );
 204                                 QString text = items.item( i ).namedItem( "content" ).firstChild().nodeValue();
 205                                 if ( !replacementText.isEmpty() )
 206                                 {
 207                                         text = text.replace( "%s", replacementText );
 208                                 }
 209                                 QGraphicsTextItem *txt = scene->addText(text, font);
 210                                 if (txtProperties.namedItem("font-outline").nodeValue().toDouble()>0.0){
 211                                         QTextCursor cursor(txt->document());
 212                                         cursor.select(QTextCursor::Document);
 213                                         QTextCharFormat format;
 214                                         format.setTextOutline(
 215                                                         QPen(QColor( stringToColor( txtProperties.namedItem( "font-outline-color" ).nodeValue() ) ),
 216                                                         txtProperties.namedItem("font-outline").nodeValue().toDouble(),
 217                                                         Qt::SolidLine,Qt::RoundCap,Qt::RoundJoin)
 218                                         );
 219                                         format.setForeground(QBrush(col));
 220
 221                                         cursor.mergeCharFormat(format);
 222                                 } else {
 223                                         txt->setDefaultTextColor( col );
 224                                 }
 225
 226                                 // Effects
 227                                 if (!txtProperties.namedItem( "typewriter" ).isNull()) {
 228                                         // typewriter effect
 229                                         mlt_properties_set_int( producer_props, "_animated", 1 );
 230                                         QStringList effetData = QStringList() << "typewriter" << text << txtProperties.namedItem( "typewriter" ).nodeValue();
 231                                         txt->setData(0, effetData);
 232                                 }
 233
 234                                 if ( txtProperties.namedItem( "alignment" ).isNull() == false )
 235                                 {
 236                                         txt->setTextWidth( txt->boundingRect().width() );
 237                                         QTextOption opt = txt->document()->defaultTextOption ();
 238                                         opt.setAlignment(( Qt::Alignment ) txtProperties.namedItem( "alignment" ).nodeValue().toInt() );
 239                                         txt->document()->setDefaultTextOption (opt);
 240                                 }
 241                                         if ( !txtProperties.namedItem( "kdenlive-axis-x-inverted" ).isNull() )
 242                                 {
 243                                         //txt->setData(OriginXLeft, txtProperties.namedItem("kdenlive-axis-x-inverted").nodeValue().toInt());
 244                                 }
 245                                 if ( !txtProperties.namedItem( "kdenlive-axis-y-inverted" ).isNull() )
 246                                 {
 247                                         //txt->setData(OriginYTop, txtProperties.namedItem("kdenlive-axis-y-inverted").nodeValue().toInt());
 248                                 }
 249                                         gitem = txt;
 250                         }
 251                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsRectItem" )
 252                         {
 253                                 QString rect = items.item( i ).namedItem( "content" ).attributes().namedItem( "rect" ).nodeValue();
 254                                 QString br_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "brushcolor" ).nodeValue();
 255                                 QString pen_str = items.item( i ).namedItem( "content" ).attributes().namedItem( "pencolor" ).nodeValue();
 256                                 double penwidth = items.item( i ).namedItem( "content" ).attributes().namedItem( "penwidth") .nodeValue().toDouble();
 257                                 QGraphicsRectItem *rec = scene->addRect( stringToRect( rect ), QPen( QBrush( stringToColor( pen_str ) ), penwidth, Qt::SolidLine, Qt::SquareCap, Qt::RoundJoin ), QBrush( stringToColor( br_str ) ) );
 258                                 gitem = rec;
 259                         }
 260                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsPixmapItem" )
 261                         {
 262                                 const QString url = items.item( i ).namedItem( "content" ).attributes().namedItem( "url" ).nodeValue();
 263                                 const QString base64 = items.item(i).namedItem("content").attributes().namedItem("base64").nodeValue();
 264                                 QImage img;
 265                                 if (base64.isEmpty()){
 266                                         img.load(url);
 267                                 }else{
 268                                         img.loadFromData(QByteArray::fromBase64(base64.toAscii()));
 269                                 }
 270                                 ImageItem *rec = new ImageItem(img);
 271                                 scene->addItem( rec );
 272                                 gitem = rec;
 273                         }
 274                         else if ( items.item( i ).attributes().namedItem( "type" ).nodeValue() == "QGraphicsSvgItem" )
 275                         {
 276                                 QString url = items.item(i).namedItem("content").attributes().namedItem("url").nodeValue();
 277                                 QString base64 = items.item(i).namedItem("content").attributes().namedItem("base64").nodeValue();
 278                                 QGraphicsSvgItem *rec = NULL;
 279                                 if (base64.isEmpty()){
 280                                         rec = new QGraphicsSvgItem(url);
 281                                 }else{
 282                                         rec = new QGraphicsSvgItem();
 283                                         QSvgRenderer *renderer= new QSvgRenderer(QByteArray::fromBase64(base64.toAscii()) );
 284                                         rec->setSharedRenderer(renderer);
 285                                         //QString elem=rec->elementId();
 286                                         //QRectF bounds = renderer->boundsOnElement(elem);
 287                                 }
 288                                 if (rec){
 289                                         scene->addItem(rec);
 290                                         gitem = rec;
 291                                 }
 292                         }
 293                 }
 294                 //pos and transform
 295                 if ( gitem )
 296                 {
 297                         QPointF p( items.item( i ).namedItem( "position" ).attributes().namedItem( "x" ).nodeValue().toDouble(),
 298                                    items.item( i ).namedItem( "position" ).attributes().namedItem( "y" ).nodeValue().toDouble() );
 299                         gitem->setPos( p );
 300                         gitem->setTransform( stringToTransform( items.item( i ).namedItem( "position" ).firstChild().firstChild().nodeValue() ) );
 301                         int zValue = items.item( i ).attributes().namedItem( "z-index" ).nodeValue().toInt();
 302                         gitem->setZValue( zValue );
 303
 304 #if QT_VERSION >= 0x040600
 305                         // effects
 306                         QDomNode eff = items.item(i).namedItem("effect");
 307                         if (!eff.isNull()) {
 308                                 QDomElement e = eff.toElement();
 309                                 if (e.attribute("type") == "blur") {
 310                                         QGraphicsBlurEffect *blur = new QGraphicsBlurEffect();
 311                                         blur->setBlurRadius(e.attribute("blurradius").toInt());
 312                                         gitem->setGraphicsEffect(blur);
 313                                 }
 314                                 else if (e.attribute("type") == "shadow") {
 315                                         QGraphicsDropShadowEffect *shadow = new QGraphicsDropShadowEffect();
 316                                         shadow->setBlurRadius(e.attribute("blurradius").toInt());
 317                                         shadow->setOffset(e.attribute("xoffset").toInt(), e.attribute("yoffset").toInt());
 318                                         gitem->setGraphicsEffect(shadow);
 319                                 }
 320                         }
 321 #endif
 322                 }
 323         }
 324
 325         QDomNode n = title.firstChildElement("background");
 326         if (!n.isNull()) {
 327                 QColor color = QColor( stringToColor( n.attributes().namedItem( "color" ).nodeValue() ) );
 328                 if (color.alpha() > 0) {
 329                         QGraphicsRectItem *rec = scene->addRect(0, 0, scene->width(), scene->height() , QPen( Qt::NoPen ), QBrush( color ) );
 330                         rec->setZValue(-1100);
 331                 }
 332
 333         }
 334
 335         QString startRect;
 336         n = title.firstChildElement( "startviewport" );
 337         // Check if node exists, if it has an x attribute, it is an old version title, don't use viewport
 338         if (!n.isNull() && !n.toElement().hasAttribute("x"))
 339         {
 340                 startRect = n.attributes().namedItem( "rect" ).nodeValue();
 341         }
 342         n = title.firstChildElement( "endviewport" );
 343         // Check if node exists, if it has an x attribute, it is an old version title, don't use viewport
 344         if (!n.isNull() && !n.toElement().hasAttribute("x"))
 345         {
 346                 QString rect = n.attributes().namedItem( "rect" ).nodeValue();
 347                 if (startRect != rect)
 348                         mlt_properties_set( producer_props, "_endrect", rect.toUtf8().data() );
 349         }
 350         if (!startRect.isEmpty()) {
 351                 mlt_properties_set( producer_props, "_startrect", startRect.toUtf8().data() );
 352         }
 353         return;
 354 }
 355
 356
 357 void drawKdenliveTitle( producer_ktitle self, mlt_frame frame, int width, int height, double position, int force_refresh )
 358 {
 359         // Obtain the producer
 360         mlt_producer producer = &self->parent;
 361         mlt_profile profile = mlt_service_profile ( MLT_PRODUCER_SERVICE( producer ) ) ;
 362         mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
 363
 364         // Obtain properties of frame
 365         mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
 366
 367         pthread_mutex_lock( &self->mutex );
 368
 369         // Check if user wants us to reload the image
 370         if ( mlt_properties_get( producer_props, "_animated" ) != NULL || force_refresh == 1 || width != self->current_width || height != self->current_height || mlt_properties_get( producer_props, "_endrect" ) != NULL )
 371         {
 372                 //mlt_cache_item_close( self->image_cache );
 373                 self->current_image = NULL;
 374                 mlt_properties_set_data( producer_props, "cached_image", NULL, 0, NULL, NULL );
 375                 mlt_properties_set_int( producer_props, "force_reload", 0 );
 376         }
 377
 378         if (self->current_image == NULL) {
 379                 // restore QGraphicsScene
 380                 QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
 381
 382                 if ( force_refresh == 1 && scene )
 383                 {
 384                         scene = NULL;
 385                         mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
 386                 }
 387
 388                 if ( scene == NULL )
 389                 {
 390                         int argc = 1;
 391                         char* argv[1];
 392                         argv[0] = (char*) "xxx";
 393
 394                         // Warning: all Qt graphic objects (QRect, ...) must be initialized AFTER
 395                         // the QApplication is created, otherwise their will be NULL
 396
 397                         if ( app == NULL ) {
 398                                 if ( qApp ) {
 399                                         app = qApp;
 400                                 }
 401                                 else {
 402 #ifdef linux
 403                                         if ( getenv("DISPLAY") == 0 )
 404                                         {
 405                                                 mlt_log_panic( MLT_PRODUCER_SERVICE( producer ), "Error, cannot render titles without an X11 environment.\nPlease either run melt from an X session or use a fake X server like xvfb:\nxvfb-run -a melt (...)\n" );
 406                                                 pthread_mutex_unlock( &self->mutex );
 407                                                 exit(1);
 408                                                 return;
 409                                         }
 410 #endif
 411                                         app = new QApplication( argc, argv );
 412                                         //fix to let the decimal point for every locale be: "."
 413                                         setlocale(LC_NUMERIC,"POSIX");
 414                                 }
 415                         }
 416                         scene = new QGraphicsScene();
 417                         scene->setItemIndexMethod( QGraphicsScene::NoIndex );
 418                         scene->setSceneRect(0, 0, mlt_properties_get_int( properties, "width" ), mlt_properties_get_int( properties, "height" ));
 419                         loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
 420                         mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
 421                 }
 422
 423                 QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "_startrect" ) ) );
 424                 QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "_endrect" ) ) );
 425
 426                 int originalWidth = mlt_properties_get_int( producer_props, "_original_width" );
 427                 int originalHeight= mlt_properties_get_int( producer_props, "_original_height" );
 428                 const QRectF source( 0, 0, width, height );
 429                 if (start.isNull()) {
 430                     start = QRectF( 0, 0, originalWidth, originalHeight );
 431                 }
 432
 433                 // Effects
 434                 QList <QGraphicsItem *> items = scene->items();
 435                 QGraphicsTextItem *titem = NULL;
 436                 for (int i = 0; i < items.count(); i++) {
 437                     titem = static_cast <QGraphicsTextItem*> ( items.at( i ) );
 438                     if (titem && !titem->data( 0 ).isNull()) {
 439                             QStringList params = titem->data( 0 ).toStringList();
 440                             if (params.at( 0 ) == "typewriter" ) {
 441                                     // typewriter effect has 2 param values:
 442                                     // the keystroke delay and a start offset, both in frames
 443                                     QStringList values = params.at( 2 ).split( ";" );
 444                                     int interval = qMax( 0, ( ( int ) position - values.at( 1 ).toInt()) / values.at( 0 ).toInt() );
 445                                     QTextDocument *td = new QTextDocument( params.at( 1 ).left( interval ) );
 446                                     td->setDefaultFont( titem->font() );
 447                                     td->setDefaultTextOption( titem->document()->defaultTextOption() );
 448                                     td->setTextWidth( titem->document()->textWidth() );
 449                                     titem->setDocument( td );
 450                             }
 451                     }
 452                 }
 453
 454                 //must be extracted from kdenlive title
 455                 QImage img( width, height, QImage::Format_ARGB32 );
 456                 img.fill( 0 );
 457                 QPainter p1;
 458                 p1.begin( &img );
 459                 p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
 460                 //| QPainter::SmoothPixmapTransform );
 461                 mlt_position anim_out = mlt_properties_get_position( producer_props, "_animation_out" );
 462
 463                 if (end.isNull())
 464                 {
 465                         scene->render( &p1, source, start, Qt::IgnoreAspectRatio );
 466                 }
 467                 else if ( position > anim_out ) {
 468                         scene->render( &p1, source, end, Qt::IgnoreAspectRatio );
 469                 }
 470                 else {
 471                         double percentage = position / anim_out;
 472                         QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * percentage;
 473                         QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * percentage;
 474                         const QRectF r1( topleft, bottomRight );
 475                         scene->render( &p1, source, r1, Qt::IgnoreAspectRatio );
 476                         if ( profile && !profile->progressive ){
 477                                 int line=0;
 478                                 double percentage_next_filed    = ( position + 0.5 ) / anim_out;
 479                                 QPointF topleft_next_field = start.topLeft() + ( end.topLeft() - start.topLeft() ) * percentage_next_filed;
 480                                 QPointF bottomRight_next_field = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * percentage_next_filed;
 481                                 const QRectF r2( topleft_next_field, bottomRight_next_field );
 482                                 QImage img1( width, height, QImage::Format_ARGB32 );
 483                                 img1.fill( 0 );
 484                                 QPainter p2;
 485                                 p2.begin(&img1);
 486                                 p2.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
 487                                 scene->render(&p2,source,r2,  Qt::IgnoreAspectRatio );
 488                                 p2.end();
 489                                 int next_field_line = (  mlt_properties_get_int( producer_props, "top_field_first" ) ? 1 : 0 );
 490                                 for (line = next_field_line ;line<height;line+=2){
 491                                                 memcpy(img.scanLine(line),img1.scanLine(line),img.bytesPerLine());
 492                                 }
 493
 494                         }
 495                 }
 496                 p1.end();
 497
 498                 int size = width * height * 4;
 499                 uint8_t *pointer=img.bits();
 500                 QRgb* src = ( QRgb* ) pointer;
 501                 self->current_image = ( uint8_t * )mlt_pool_alloc( size );
 502                 uint8_t *dst = self->current_image;
 503
 504                 for ( int i = 0; i < width * height * 4; i += 4 )
 505                 {
 506                         *dst++=qRed( *src );
 507                         *dst++=qGreen( *src );
 508                         *dst++=qBlue( *src );
 509                         *dst++=qAlpha( *src );
 510                         src++;
 511                 }
 512
 513                 mlt_properties_set_data( producer_props, "cached_image", self->current_image, size, mlt_pool_release, NULL );
 514                 self->current_width = width;
 515                 self->current_height = height;
 516         }
 517
 518         pthread_mutex_unlock( &self->mutex );
 519         mlt_properties_set_int( properties, "width", self->current_width );
 520         mlt_properties_set_int( properties, "height", self->current_height );
 521 }
 522
 523