mlt_producer mlt_producer_cut( mlt_producer self, int in, int out )
{
mlt_producer result = mlt_producer_new( mlt_service_profile( MLT_PRODUCER_SERVICE( self ) ) );
mlt_producer parent = mlt_producer_cut_parent( self );
mlt_properties properties = MLT_PRODUCER_PROPERTIES( result );
mlt_properties parent_props = MLT_PRODUCER_PROPERTIES( parent );
mlt_properties_set_lcnumeric( properties,
mlt_properties_get_lcnumeric( MLT_PRODUCER_PROPERTIES( self ) ) );
mlt_events_block( MLT_PRODUCER_PROPERTIES( result ), MLT_PRODUCER_PROPERTIES( result ) );
// Special case - allow for a cut of the entire producer (this will squeeze all other cuts to 0)
if ( in <= 0 )
in = 0;
if ( ( out < 0 || out >= mlt_producer_get_length( parent ) ) && !mlt_producer_is_blank( self ) )
out = mlt_producer_get_length( parent ) - 1;
mlt_properties_inc_ref( parent_props );
mlt_properties_set_int( properties, "_cut", 1 );
mlt_properties_set_data( properties, "_cut_parent", parent, 0, ( mlt_destructor )mlt_producer_close, NULL );
mlt_properties_set_position( properties, "length", mlt_properties_get_position( parent_props, "length" ) );
mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( parent_props, "aspect_ratio" ) );
mlt_producer_set_in_and_out( result, in, out );
return result;
}
bool createQApplicationIfNeeded(mlt_service service)
{
if (!qApp) {
#if defined(Q_OS_UNIX) && !defined(Q_OS_MAC)
XInitThreads();
if (getenv("DISPLAY") == 0) {
mlt_log_error(service,
"The MLT Qt module requires a X11 environment.\n"
"Please either run melt from an X session or use a fake X server like xvfb:\n"
"xvfb-run -a melt (...)\n" );
return false;
}
#endif
if (!mlt_properties_get(mlt_global_properties(), "qt_argv"))
mlt_properties_set(mlt_global_properties(), "qt_argv", "MLT");
static int argc = 1;
static char* argv[] = { mlt_properties_get(mlt_global_properties(), "Qt argv") };
new QApplication(argc, argv);
const char *localename = mlt_properties_get_lcnumeric(MLT_SERVICE_PROPERTIES(service));
QLocale::setDefault(QLocale(localename));
}
return true;
}
int refresh_qimage( producer_qimage self, mlt_frame frame )
{
// Obtain properties of frame and producer
mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
mlt_producer producer = &self->parent;
mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
// Check if user wants us to reload the image
if ( mlt_properties_get_int( producer_props, "force_reload" ) )
{
self->qimage = NULL;
self->current_image = NULL;
mlt_properties_set_int( producer_props, "force_reload", 0 );
}
// Get the time to live for each frame
double ttl = mlt_properties_get_int( producer_props, "ttl" );
// Get the original position of this frame
mlt_position position = mlt_frame_original_position( frame );
position += mlt_producer_get_in( producer );
// Image index
int image_idx = ( int )floor( ( double )position / ttl ) % self->count;
// Key for the cache
char image_key[ 10 ];
sprintf( image_key, "%d", image_idx );
int disable_exif = mlt_properties_get_int( producer_props, "disable_exif" );
if ( app == NULL )
{
if ( qApp )
{
app = qApp;
}
else
{
#ifdef linux
if ( getenv("DISPLAY") == 0 )
{
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" );
return -1;
}
#endif
int argc = 1;
char* argv[1];
argv[0] = (char*) "xxx";
app = new QApplication( argc, argv );
const char *localename = mlt_properties_get_lcnumeric( MLT_SERVICE_PROPERTIES( MLT_PRODUCER_SERVICE( producer ) ) );
QLocale::setDefault( QLocale( localename ) );
}
}
if ( image_idx != self->qimage_idx )
self->qimage = NULL;
if ( !self->qimage || mlt_properties_get_int( producer_props, "_disable_exif" ) != disable_exif )
{
self->current_image = NULL;
QImage *qimage = new QImage( QString::fromUtf8( mlt_properties_get_value( self->filenames, image_idx ) ) );
self->qimage = qimage;
if ( !qimage->isNull( ) )
{
// Read the exif value for this file
if ( !disable_exif )
qimage = reorient_with_exif( self, image_idx, qimage );
// Register qimage for destruction and reuse
mlt_cache_item_close( self->qimage_cache );
mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "qimage.qimage", qimage, 0, ( mlt_destructor )qimage_delete );
self->qimage_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "qimage.qimage" );
self->qimage_idx = image_idx;
// Store the width/height of the qimage
self->current_width = qimage->width( );
self->current_height = qimage->height( );
mlt_events_block( producer_props, NULL );
mlt_properties_set_int( producer_props, "meta.media.width", self->current_width );
mlt_properties_set_int( producer_props, "meta.media.height", self->current_height );
mlt_properties_set_int( producer_props, "_disable_exif", disable_exif );
mlt_events_unblock( producer_props, NULL );
}
else
{
delete qimage;
self->qimage = NULL;
}
}
// Set width/height of frame
mlt_properties_set_int( properties, "width", self->current_width );
mlt_properties_set_int( properties, "height", self->current_height );
return image_idx;
}
void drawKdenliveTitle( producer_ktitle self, mlt_frame frame, int width, int height, double position, int force_refresh )
{
// Obtain the producer
mlt_producer producer = &self->parent;
mlt_profile profile = mlt_service_profile ( MLT_PRODUCER_SERVICE( producer ) ) ;
mlt_properties producer_props = MLT_PRODUCER_PROPERTIES( producer );
// Obtain properties of frame
mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
pthread_mutex_lock( &self->mutex );
// Check if user wants us to reload the image
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 )
{
//mlt_cache_item_close( self->image_cache );
self->current_image = NULL;
mlt_properties_set_data( producer_props, "cached_image", NULL, 0, NULL, NULL );
mlt_properties_set_int( producer_props, "force_reload", 0 );
}
if (self->current_image == NULL) {
// restore QGraphicsScene
QGraphicsScene *scene = static_cast<QGraphicsScene *> (mlt_properties_get_data( producer_props, "qscene", NULL ));
if ( force_refresh == 1 && scene )
{
scene = NULL;
mlt_properties_set_data( producer_props, "qscene", NULL, 0, NULL, NULL );
}
if ( scene == NULL )
{
int argc = 1;
char* argv[1];
argv[0] = (char*) "xxx";
// Warning: all Qt graphic objects (QRect, ...) must be initialized AFTER
// the QApplication is created, otherwise their will be NULL
if ( app == NULL ) {
if ( qApp ) {
app = qApp;
}
else {
#ifdef linux
if ( getenv("DISPLAY") == 0 )
{
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" );
pthread_mutex_unlock( &self->mutex );
return;
}
#endif
app = new QApplication( argc, argv );
const char *localename = mlt_properties_get_lcnumeric( MLT_SERVICE_PROPERTIES( MLT_PRODUCER_SERVICE( producer ) ) );
QLocale::setDefault( QLocale( localename ) );
}
qRegisterMetaType<QTextCursor>( "QTextCursor" );
}
scene = new QGraphicsScene();
scene->setItemIndexMethod( QGraphicsScene::NoIndex );
scene->setSceneRect(0, 0, mlt_properties_get_int( properties, "width" ), mlt_properties_get_int( properties, "height" ));
if ( mlt_properties_get( producer_props, "resource" ) && mlt_properties_get( producer_props, "resource" )[0] != '\0' )
{
// The title has a resource property, so we read all properties from the resource.
// Do not serialize the xmldata
loadFromXml( producer, scene, mlt_properties_get( producer_props, "_xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
}
else
{
// The title has no resource, all data should be serialized
loadFromXml( producer, scene, mlt_properties_get( producer_props, "xmldata" ), mlt_properties_get( producer_props, "templatetext" ) );
}
mlt_properties_set_data( producer_props, "qscene", scene, 0, ( mlt_destructor )qscene_delete, NULL );
}
QRectF start = stringToRect( QString( mlt_properties_get( producer_props, "_startrect" ) ) );
QRectF end = stringToRect( QString( mlt_properties_get( producer_props, "_endrect" ) ) );
int originalWidth = mlt_properties_get_int( producer_props, "_original_width" );
int originalHeight= mlt_properties_get_int( producer_props, "_original_height" );
const QRectF source( 0, 0, width, height );
if (start.isNull()) {
start = QRectF( 0, 0, originalWidth, originalHeight );
}
// Effects
QList <QGraphicsItem *> items = scene->items();
QGraphicsTextItem *titem = NULL;
for (int i = 0; i < items.count(); i++) {
titem = static_cast <QGraphicsTextItem*> ( items.at( i ) );
if (titem && !titem->data( 0 ).isNull()) {
QStringList params = titem->data( 0 ).toStringList();
if (params.at( 0 ) == "typewriter" ) {
// typewriter effect has 2 param values:
// the keystroke delay and a start offset, both in frames
QStringList values = params.at( 2 ).split( ";" );
int interval = qMax( 0, ( ( int ) position - values.at( 1 ).toInt()) / values.at( 0 ).toInt() );
QTextCursor cursor = titem->textCursor();
cursor.movePosition(QTextCursor::EndOfBlock);
// get the font format
QTextCharFormat format = cursor.charFormat();
cursor.select(QTextCursor::Document);
QString txt = params.at( 1 ).left( interval );
// If the string to insert is empty, insert a space / linebreak so that we don't loose
// formatting infos for the next iterations
int lines = params.at( 1 ).count( '\n' );
QString empty = " ";
for (int i = 0; i < lines; i++)
empty.append( "\n " );
cursor.insertText( txt.isEmpty() ? empty : txt, format );
if ( !titem->data( 1 ).isNull() )
titem->setTextWidth( titem->data( 1 ).toDouble() );
}
}
}
//must be extracted from kdenlive title
QImage img( width, height, QImage::Format_ARGB32 );
img.fill( 0 );
QPainter p1;
p1.begin( &img );
p1.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
//| QPainter::SmoothPixmapTransform );
mlt_position anim_out = mlt_properties_get_position( producer_props, "_animation_out" );
if (end.isNull())
{
scene->render( &p1, source, start, Qt::IgnoreAspectRatio );
}
else if ( position > anim_out ) {
scene->render( &p1, source, end, Qt::IgnoreAspectRatio );
}
else {
double percentage = 0;
if ( position && anim_out )
percentage = position / anim_out;
QPointF topleft = start.topLeft() + ( end.topLeft() - start.topLeft() ) * percentage;
QPointF bottomRight = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * percentage;
const QRectF r1( topleft, bottomRight );
scene->render( &p1, source, r1, Qt::IgnoreAspectRatio );
if ( profile && !profile->progressive ){
int line=0;
double percentage_next_filed = ( position + 0.5 ) / anim_out;
QPointF topleft_next_field = start.topLeft() + ( end.topLeft() - start.topLeft() ) * percentage_next_filed;
QPointF bottomRight_next_field = start.bottomRight() + ( end.bottomRight() - start.bottomRight() ) * percentage_next_filed;
const QRectF r2( topleft_next_field, bottomRight_next_field );
QImage img1( width, height, QImage::Format_ARGB32 );
img1.fill( 0 );
QPainter p2;
p2.begin(&img1);
p2.setRenderHints( QPainter::Antialiasing | QPainter::TextAntialiasing | QPainter::HighQualityAntialiasing );
scene->render(&p2,source,r2, Qt::IgnoreAspectRatio );
p2.end();
int next_field_line = ( mlt_properties_get_int( producer_props, "top_field_first" ) ? 1 : 0 );
for (line = next_field_line ;line<height;line+=2){
memcpy(img.scanLine(line),img1.scanLine(line),img.bytesPerLine());
}
}
}
p1.end();
int size = width * height * 4;
uint8_t *pointer=img.bits();
QRgb* src = ( QRgb* ) pointer;
self->current_image = ( uint8_t * )mlt_pool_alloc( size );
uint8_t *dst = self->current_image;
for ( int i = 0; i < width * height * 4; i += 4 )
{
*dst++=qRed( *src );
*dst++=qGreen( *src );
*dst++=qBlue( *src );
*dst++=qAlpha( *src );
src++;
}
mlt_properties_set_data( producer_props, "cached_image", self->current_image, size, mlt_pool_release, NULL );
self->current_width = width;
self->current_height = height;
}
pthread_mutex_unlock( &self->mutex );
mlt_properties_set_int( properties, "width", self->current_width );
mlt_properties_set_int( properties, "height", self->current_height );
}