filter_dust.yml: apply description fix patch from Mads Dydensborg.

[melted] / src / modules / vmfx / filter_chroma.c

diff --git a/src/modules/vmfx/filter_chroma.c b/src/modules/vmfx/filter_chroma.c
index 6d9384c..7616856 100644 (file)
--- a/src/modules/vmfx/filter_chroma.c
+++ b/src/modules/vmfx/filter_chroma.c
@@ -18,8 +18,9 @@
  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-#include "filter_chroma.h"
+#include <framework/mlt_filter.h>
 #include <stdlib.h>
+#include <math.h>
 #include <framework/mlt_factory.h>
 #include <framework/mlt_frame.h>
 #include <framework/mlt_producer.h>
@@ -30,9 +31,12 @@ static inline int in_range( uint8_t v, uint8_t c, int var )
        return ( ( int )v >= c - var ) && ( ( int )v <= c + var );
 }
 
-static inline uint8_t alpha_value( uint8_t a, uint8_t *p, uint8_t u, uint8_t v, int var )
+static inline uint8_t alpha_value( uint8_t a, uint8_t *p, uint8_t u, uint8_t v, int var, int odd )
 {
-       return ( in_range( *( p + 1 ), u, var ) && in_range( *( p + 3 ), v, var ) ) ? 0 : a;
+       if ( odd == 0 )
+               return ( in_range( *( p + 1 ), u, var ) && in_range( *( p + 3 ), v, var ) ) ? 0 : a;
+       else
+               return ( in_range( ( *( p + 1 ) + *( p + 5 ) ) / 2, u, var ) && in_range( ( *( p + 3 ) + *( p + 7 ) ) / 2, v, var ) ) ? 0 : a;
 }
 
 /** Get the images and map the chroma to the alpha of the frame.
@@ -58,12 +62,11 @@ static int filter_get_image( mlt_frame frame, uint8_t **image, mlt_image_format
                int size = *width * *height / 2;
                while ( size -- )
                {
-                       *alpha = alpha_value( *alpha, p, u, v, variance );
-                       *alpha ++;
-                       p += 2;
-                       *alpha = alpha_value( *alpha, p, v, u, variance );
+                       *alpha = alpha_value( *alpha, p, u, v, variance, 0 );
                        alpha ++;
-                       p += 2;
+                       *alpha = alpha_value( *alpha, p, u, v, variance, 1 );
+                       alpha ++;
+                       p += 4;
                }
        }
 
@@ -83,13 +86,13 @@ static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
 /** Constructor for the filter.
 */
 
-mlt_filter filter_chroma_init( char *arg )
+mlt_filter filter_chroma_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
 {
        mlt_filter this = mlt_filter_new( );
        if ( this != NULL )
        {
-               mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "key", arg == NULL ? "0x00ff00" : arg );
-               mlt_properties_set_double( MLT_FILTER_PROPERTIES( this ), "variance", 0.3 );
+               mlt_properties_set( MLT_FILTER_PROPERTIES( this ), "key", arg == NULL ? "0x0000ff" : arg );
+               mlt_properties_set_double( MLT_FILTER_PROPERTIES( this ), "variance", 0.15 );
                this->process = filter_process;
        }
        return this;