// Normalise the input and out display aspect
int normalised_width = mlt_properties_get_int( properties, "normalised_width" );
int normalised_height = mlt_properties_get_int( properties, "normalised_height" );
- double input_ar = mlt_frame_get_aspect_ratio( this );
- double output_ar = mlt_properties_get_double( properties, "consumer_aspect_ratio" );
+ int real_width = mlt_properties_get_int( properties, "real_width" );
+ int real_height = mlt_properties_get_int( properties, "real_height" );
+ if ( real_width == 0 )
+ real_width = mlt_properties_get_int( properties, "width" );
+ if ( real_height == 0 )
+ real_height = mlt_properties_get_int( properties, "height" );
+ double input_ar = mlt_frame_get_aspect_ratio( this ) * real_width / real_height;
+ double output_ar = mlt_properties_get_double( properties, "consumer_aspect_ratio" ) * owidth / oheight;
// Optimised for the input_ar > output_ar case (e.g. widescreen on standard)
- int scaled_width = normalised_width;
- int scaled_height = output_ar / input_ar * normalised_height;
+ int scaled_width = input_ar / output_ar * normalised_width + 0.5;
+ int scaled_height = normalised_height;
- // Now ensure that our images fit in the normalised frame
- if ( scaled_height > normalised_height )
+ // Now ensure that our images fit in the output frame
+ if ( scaled_width > normalised_width )
{
- scaled_width = input_ar / output_ar * normalised_width;
- scaled_height = normalised_height;
+ scaled_width = normalised_width;
+ scaled_height = output_ar / input_ar * normalised_height + 0.5;
}
// Now calculate the actual image size that we want
oheight = scaled_height * oheight / normalised_height;
// Tell frame we have conformed the aspect to the consumer
- mlt_frame_set_aspect_ratio( this, output_ar );
+ mlt_frame_set_aspect_ratio( this, mlt_properties_get_double( properties, "consumer_aspect_ratio" ) );
}
// Now pass on the calculations down the line
// 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 );
}
}
- return 0;
+ return error;
}
/** Filter processing.
}
return this;
}
-