* 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 <framework/mlt_filter.h>
#include <framework/mlt_frame.h>
#include <stdio.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 :-).
*/
// Retrieve the aspect ratio
double aspect_ratio = mlt_deque_pop_back_double( MLT_FRAME_IMAGE_STACK( this ) );
+ // Correct Width/height if necessary
+ if ( *width == 0 || *height == 0 )
+ {
+ *width = mlt_properties_get_int( properties, "normalised_width" );
+ *height = mlt_properties_get_int( properties, "normalised_height" );
+ }
+
// Assign requested width/height from our subordinate
int owidth = *width;
int oheight = *height;
double input_ar = aspect_ratio * real_width / real_height;
double output_ar = mlt_properties_get_double( properties, "consumer_aspect_ratio" ) * owidth / oheight;
- //fprintf( stderr, "normalised %dx%d output %dx%d %f %f\n", normalised_width, normalised_height, owidth, oheight, ( float )output_ar, ( float )mlt_properties_get_double( properties, "consumer_aspect_ratio" ) * owidth / oheight );
+// fprintf( stderr, "real %dx%d normalised %dx%d output %dx%d sar %f in-dar %f out-dar %f\n",
+// real_width, real_height, normalised_width, normalised_height, owidth, oheight, aspect_ratio, input_ar, output_ar);
// Optimised for the input_ar > output_ar case (e.g. widescreen on standard)
- int scaled_width = rint( 0.5 + ( input_ar * normalised_width ) / output_ar );
+ int scaled_width = rint( ( input_ar * normalised_width ) / output_ar );
int scaled_height = normalised_height;
// Now ensure that our images fit in the output frame
if ( scaled_width > normalised_width )
{
scaled_width = normalised_width;
- scaled_height = rint( 0.5 + ( output_ar * normalised_height ) / input_ar );
+ scaled_height = rint( ( output_ar * normalised_height ) / input_ar );
}
// Now calculate the actual image size that we want
- owidth = rint( 0.5 + scaled_width * owidth / normalised_width );
- oheight = rint( 0.5 + scaled_height * oheight / normalised_height );
+ owidth = rint( scaled_width * owidth / normalised_width );
+ oheight = rint( scaled_height * oheight / normalised_height );
// Tell frame we have conformed the aspect to the consumer
mlt_frame_set_aspect_ratio( this, mlt_properties_get_double( properties, "consumer_aspect_ratio" ) );
// 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_int( 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 )
{
// 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;
+ uint8_t *ptr = image + owidth * 2;
+ memmove( ptr, image, size - owidth * 2 );
- // Set the new image pointer with no destructor
- mlt_properties_set_data( properties, "image", image, size, NULL, NULL );
-
// 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" ) )
/** Constructor for the filter.
*/
-mlt_filter filter_resize_init( char *arg )
+mlt_filter filter_resize_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
{
mlt_filter this = calloc( sizeof( struct mlt_filter_s ), 1 );
if ( mlt_filter_init( this, this ) == 0 )
projects / melted / blobdiff