* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "filter_rescale.h"
-
+#include <framework/mlt_filter.h>
#include <framework/mlt_frame.h>
#include <stdio.h>
typedef int ( *image_scaler )( mlt_frame this, uint8_t **image, mlt_image_format iformat, mlt_image_format oformat, int iwidth, int iheight, int owidth, int oheight );
+static void scale_alpha( mlt_frame this, int iwidth, int iheight, int owidth, int oheight );
+
static int filter_scale( mlt_frame this, uint8_t **image, mlt_image_format iformat, mlt_image_format oformat, int iwidth, int iheight, int owidth, int oheight )
{
// Get the properties
// Return the output
*image = mlt_properties_get_data( properties, "image", NULL );
+
+ // Scale the alpha channel only if exists and not correct size
+ int alpha_size = 0;
+ mlt_properties_get_data( properties, "alpha", &alpha_size );
+ if ( alpha_size > 0 && alpha_size != ( owidth * oheight ) )
+ scale_alpha( this, iwidth, iheight, owidth, oheight );
}
else if ( iformat == mlt_image_rgb24 || iformat == mlt_image_rgb24a )
{
mlt_convert_rgb24a_to_yuv422( *image, iwidth, iheight, iwidth * 4, output, alpha );
mlt_properties_set_data( properties, "alpha", alpha, iwidth * ( iheight + 1 ), ( mlt_destructor )mlt_pool_release, NULL );
+
+ scale_alpha( this, iwidth, iheight, owidth, oheight );
}
else
{
mlt_convert_rgb24a_to_yuv422( *image, owidth, oheight, owidth * 4, output, alpha );
mlt_properties_set_data( properties, "alpha", alpha, owidth * ( oheight + 1 ), ( mlt_destructor )mlt_pool_release, NULL );
+
+ scale_alpha( this, iwidth, iheight, owidth, oheight );
}
else
{
static void scale_alpha( mlt_frame this, int iwidth, int iheight, int owidth, int oheight )
{
+ // Scale the alpha
uint8_t *output = NULL;
uint8_t *input = mlt_frame_get_alpha_mask( this );
mlt_properties_set_int( properties, "rescale_width", iwidth );
mlt_properties_set_int( properties, "rescale_height", iheight );
}
-
+
+ // Deinterlace if height is changing to prevent fields mixing on interpolation
+ // One exception: non-interpolated, integral scaling
+ if ( iheight != oheight && ( strcmp( interps, "nearest" ) || ( iheight % oheight != 0 ) ) )
+ mlt_properties_set_int( properties, "consumer_deinterlace", 1 );
+
// Get the image as requested
mlt_frame_get_image( this, image, format, &iwidth, &iheight, writable );
scaler_method( this, image, *format, mlt_image_yuv422, iwidth, iheight, owidth, oheight );
*width = owidth;
*height = oheight;
-
- // Scale the alpha
- scale_alpha( this, iwidth, iheight, owidth, oheight );
}
else if ( *format == mlt_image_rgb24 && wanted_format == mlt_image_rgb24 )
{
// Return the output
*width = owidth;
*height = oheight;
-
- // Scale the alpha
- scale_alpha( this, iwidth, iheight, owidth, oheight );
}
else if ( *format == mlt_image_rgb24 || *format == mlt_image_rgb24a )
{
*format = mlt_image_yuv422;
*width = owidth;
*height = oheight;
-
- // Scale the alpha
- scale_alpha( this, iwidth, iheight, owidth, oheight );
}
else
{
/** Constructor for the filter.
*/
-mlt_filter filter_rescale_init( char *arg )
+mlt_filter filter_rescale_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
{
// Create a new scaler
mlt_filter this = mlt_filter_new( );