* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
* Author: Charles Yates <charles.yates@pandora.be>
*
- * 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.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "filter_resize.h"
#include <stdlib.h>
#include <math.h>
+/** Swapbytes inline.
+*/
+
+static inline void swap_bytes( uint8_t *upper, uint8_t *lower )
+{
+ uint8_t t = *lower;
+ *lower = *upper;
+ *upper = t;
+}
+
/** Do it :-).
*/
// Get the requested scale operation
char *op = mlt_properties_get( MLT_FILTER_PROPERTIES( filter ), "scale" );
+ // Provides a manual override for misreported field order
+ if ( mlt_properties_get( properties, "meta.top_field_first" ) )
+ mlt_properties_set( properties, "top_field_first", mlt_properties_get_int( properties, "meta.top_field_first" ) );
+
// Correct field order if needed
- if ( mlt_properties_get_int( properties, "top_field_first" ) == 1 || mlt_properties_get_int( properties, "meta.top_field_first" ) == 1 )
+ if ( mlt_properties_get_int( properties, "top_field_first" ) == 1 )
{
// Get the input image, width and height
int size;
uint8_t *image = mlt_properties_get_data( properties, "image", &size );
-
- // Keep the original image around to be destroyed on frame close
- mlt_properties_rename( properties, "image", "original_image" );
-
- // Duplicate the last line in the field to avoid artifact
- memcpy( image + oheight * owidth * 2, image + oheight * owidth * 2 - owidth * 4, owidth * 2 );
-
- // Offset the image pointer by one line
- image += owidth * 2;
- size -= owidth * 2;
-
- // Set the new image pointer with no destructor
- mlt_properties_set_data( properties, "image", image, size, NULL, NULL );
+ uint8_t *ptr = image + owidth * 2;
+ int h = oheight / 2;
+ int w = owidth;
+
+ // Swap the lines around
+ while( h -- )
+ {
+ w = owidth;
+ while( w -- )
+ {
+ swap_bytes( image ++, ptr ++ );
+ swap_bytes( image ++, ptr ++ );
+ }
+ image += owidth * 2;
+ ptr += owidth * 2;
+ }
// Set the normalised field order
mlt_properties_set_int( properties, "top_field_first", 0 );
+ mlt_properties_set_int( properties, "meta.top_field_first", 0 );
}
if ( !strcmp( op, "affine" ) )