Refactor to mlt_transition_get_progress_delta().

[mlt] / src / modules / core / transition_luma.c

diff --git a/src/modules/core/transition_luma.c b/src/modules/core/transition_luma.c
index e2dbfcd3b3d0359e27fb653f2261864657106da5..b4fac50ef990d2cfc0a70d4909bc7808d0d0f086 100644 (file)
--- a/src/modules/core/transition_luma.c
+++ b/src/modules/core/transition_luma.c
@@ -29,25 +29,6 @@
 #include <string.h>
 #include <math.h>
 
-/** Calculate the field delta for this frame - position between two frames.
-*/
-
-static float delta_calculate( mlt_transition this, mlt_frame frame )
-{
-       // Get the in and out position
-       mlt_position in = mlt_transition_get_in( this );
-       mlt_position out = mlt_transition_get_out( this );
-
-       // Get the position of the frame
-       mlt_position position = mlt_frame_get_position( frame );
-
-       // Now do the calcs
-       float x = ( float )( position - in ) / ( float )( out - in + 1 );
-       float y = ( float )( position + 1 - in ) / ( float )( out - in + 1 );
-
-       return ( y - x ) / 2.0;
-}
-
 static inline int dissolve_yuv( mlt_frame this, mlt_frame that, float weight, int width, int height )
 {
        int ret = 0;
@@ -468,7 +449,7 @@ static int transition_get_image( mlt_frame a_frame, uint8_t **image, mlt_image_f
 
        // Arbitrary composite defaults
        float mix = mlt_transition_get_progress( transition, a_frame );
-       float frame_delta = delta_calculate( transition, a_frame );
+       float frame_delta = mlt_transition_get_progress_delta( transition, a_frame );
        float luma_softness = mlt_properties_get_double( properties, "softness" );
        int progressive = 
                        mlt_properties_get_int( a_props, "consumer_deinterlace" ) ||