void refresh_image( producer_qimage self, mlt_frame frame, mlt_image_format format, int width, int height )
{
// Obtain properties of frame and producer
mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
mlt_producer producer = &self->parent;
// Get index and qimage
int image_idx = refresh_qimage( self, frame );
// optimization for subsequent iterations on single pictur
if ( image_idx != self->image_idx || width != self->current_width || height != self->current_height )
self->current_image = NULL;
// If we have a qimage and need a new scaled image
if ( self->qimage && ( !self->current_image || ( format != mlt_image_none && format != self->format ) ) )
{
char *interps = mlt_properties_get( properties, "rescale.interp" );
int interp = 0;
QImage *qimage = static_cast<QImage*>( self->qimage );
// QImage has two scaling modes - we'll toggle between them here
if ( strcmp( interps, "tiles" ) == 0
|| strcmp( interps, "hyper" ) == 0
|| strcmp( interps, "bicubic" ) == 0 )
interp = 1;
// Note - the original qimage is already safe and ready for destruction
if ( qimage->depth() == 1 )
{
QImage temp = qimage->convertToFormat( QImage::Format_RGB32 );
delete qimage;
qimage = new QImage( temp );
self->qimage = qimage;
}
QImage scaled = interp == 0 ? qimage->scaled( QSize( width, height ) ) :
qimage->scaled( QSize(width, height), Qt::IgnoreAspectRatio, Qt::SmoothTransformation );
int has_alpha = scaled.hasAlphaChannel();
// Store width and height
self->current_width = width;
self->current_height = height;
// Allocate/define image
int dst_stride = width * ( has_alpha ? 4 : 3 );
int image_size = dst_stride * ( height + 1 );
self->current_image = ( uint8_t * )mlt_pool_alloc( image_size );
self->current_alpha = NULL;
self->format = has_alpha ? mlt_image_rgb24a : mlt_image_rgb24;
// Copy the image
int y = self->current_height + 1;
uint8_t *dst = self->current_image;
while ( --y )
{
QRgb *src = (QRgb*) scaled.scanLine( self->current_height - y );
int x = self->current_width + 1;
while ( --x )
{
*dst++ = qRed(*src);
*dst++ = qGreen(*src);
*dst++ = qBlue(*src);
if ( has_alpha ) *dst++ = qAlpha(*src);
++src;
}
}
// Convert image to requested format
if ( format != mlt_image_none && format != self->format )
{
uint8_t *buffer = NULL;
// First, set the image so it can be converted when we get it
mlt_frame_replace_image( frame, self->current_image, self->format, width, height );
mlt_frame_set_image( frame, self->current_image, image_size, mlt_pool_release );
self->format = format;
// get_image will do the format conversion
mlt_frame_get_image( frame, &buffer, &format, &width, &height, 0 );
// cache copies of the image and alpha buffers
if ( buffer )
{
image_size = mlt_image_format_size( format, width, height, NULL );
self->current_image = (uint8_t*) mlt_pool_alloc( image_size );
memcpy( self->current_image, buffer, image_size );
}
if ( ( buffer = mlt_frame_get_alpha_mask( frame ) ) )
{
self->current_alpha = (uint8_t*) mlt_pool_alloc( width * height );
memcpy( self->current_alpha, buffer, width * height );
}
}
// Update the cache
mlt_cache_item_close( self->image_cache );
mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "qimage.image", self->current_image, image_size, mlt_pool_release );
self->image_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "qimage.image" );
self->image_idx = image_idx;
mlt_cache_item_close( self->alpha_cache );
self->alpha_cache = NULL;
if ( self->current_alpha )
{
mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "qimage.alpha", self->current_alpha, width * height, mlt_pool_release );
self->alpha_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "qimage.alpha" );
}
}
// Set width/height of frame
mlt_properties_set_int( properties, "width", self->current_width );
mlt_properties_set_int( properties, "height", self->current_height );
}
static void refresh_image( producer_pixbuf self, mlt_frame frame, mlt_image_format format, int width, int height )
{
// Obtain properties of frame and producer
mlt_properties properties = MLT_FRAME_PROPERTIES( frame );
mlt_producer producer = &self->parent;
// Get index and pixbuf
int current_idx = refresh_pixbuf( self, frame );
// optimization for subsequent iterations on single picture
if ( current_idx != self->image_idx || width != self->width || height != self->height )
self->image = NULL;
mlt_log_debug( MLT_PRODUCER_SERVICE( producer ), "image %p pixbuf %p idx %d current_idx %d pixbuf_idx %d width %d\n",
self->image, self->pixbuf, current_idx, self->image_idx, self->pixbuf_idx, width );
// If we have a pixbuf and we need an image
if ( self->pixbuf && ( !self->image || ( format != mlt_image_none && format != mlt_image_glsl && format != self->format ) ) )
{
char *interps = mlt_properties_get( properties, "rescale.interp" );
if ( interps ) interps = strdup( interps );
int interp = GDK_INTERP_BILINEAR;
if ( !interps ) {
// Keep bilinear by default
}
else if ( strcmp( interps, "nearest" ) == 0 )
interp = GDK_INTERP_NEAREST;
else if ( strcmp( interps, "tiles" ) == 0 )
interp = GDK_INTERP_TILES;
else if ( strcmp( interps, "hyper" ) == 0 || strcmp( interps, "bicubic" ) == 0 )
interp = GDK_INTERP_HYPER;
free( interps );
// Note - the original pixbuf is already safe and ready for destruction
pthread_mutex_lock( &g_mutex );
GdkPixbuf* pixbuf = gdk_pixbuf_scale_simple( self->pixbuf, width, height, interp );
// Store width and height
self->width = width;
self->height = height;
// Allocate/define image
int has_alpha = gdk_pixbuf_get_has_alpha( pixbuf );
int src_stride = gdk_pixbuf_get_rowstride( pixbuf );
int dst_stride = self->width * ( has_alpha ? 4 : 3 );
int image_size = dst_stride * ( height + 1 );
self->image = mlt_pool_alloc( image_size );
self->alpha = NULL;
self->format = has_alpha ? mlt_image_rgb24a : mlt_image_rgb24;
if ( src_stride != dst_stride )
{
int y = self->height;
uint8_t *src = gdk_pixbuf_get_pixels( pixbuf );
uint8_t *dst = self->image;
while ( y-- )
{
memcpy( dst, src, dst_stride );
dst += dst_stride;
src += src_stride;
}
}
else
{
memcpy( self->image, gdk_pixbuf_get_pixels( pixbuf ), src_stride * height );
}
pthread_mutex_unlock( &g_mutex );
// Convert image to requested format
if ( format != mlt_image_none && format != mlt_image_glsl && format != self->format )
{
uint8_t *buffer = NULL;
// First, set the image so it can be converted when we get it
mlt_frame_replace_image( frame, self->image, self->format, width, height );
mlt_frame_set_image( frame, self->image, image_size, mlt_pool_release );
self->format = format;
// get_image will do the format conversion
mlt_frame_get_image( frame, &buffer, &format, &width, &height, 0 );
// cache copies of the image and alpha buffers
if ( buffer )
{
image_size = mlt_image_format_size( format, width, height, NULL );
self->image = mlt_pool_alloc( image_size );
memcpy( self->image, buffer, image_size );
}
if ( ( buffer = mlt_frame_get_alpha_mask( frame ) ) )
{
self->alpha = mlt_pool_alloc( width * height );
memcpy( self->alpha, buffer, width * height );
}
}
// Update the cache
mlt_cache_item_close( self->image_cache );
mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "pixbuf.image", self->image, image_size, mlt_pool_release );
self->image_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.image" );
self->image_idx = current_idx;
mlt_cache_item_close( self->alpha_cache );
self->alpha_cache = NULL;
if ( self->alpha )
{
mlt_service_cache_put( MLT_PRODUCER_SERVICE( producer ), "pixbuf.alpha", self->alpha, width * height, mlt_pool_release );
self->alpha_cache = mlt_service_cache_get( MLT_PRODUCER_SERVICE( producer ), "pixbuf.alpha" );
}
// Finished with pixbuf now
g_object_unref( pixbuf );
}
// Set width/height of frame
mlt_properties_set_int( properties, "width", self->width );
mlt_properties_set_int( properties, "height", self->height );
}
