inigo docs load/stop corrections

[melted] / mlt / src / framework / mlt_frame.c

diff --git a/mlt/src/framework/mlt_frame.c b/mlt/src/framework/mlt_frame.c
index 19b7c81..3f583d9 100644 (file)
--- a/mlt/src/framework/mlt_frame.c
+++ b/mlt/src/framework/mlt_frame.c
@@ -456,22 +456,32 @@ int mlt_frame_composite_yuv( mlt_frame this, mlt_frame that, int x, int y, float
        if ( p_alpha )
                p_alpha += x_src + y_src * stride_src / 2;
 
+       uint8_t *p = p_src;
+       uint8_t *q = p_dest;
+       uint8_t *o = p_dest;
+       uint8_t *z = p_alpha;
+
+       uint8_t Y;
+       uint8_t UV;
+       uint8_t a;
+       float value;
+
        // now do the compositing only to cropped extents
        for ( i = 0; i < height_src; i++ )
        {
-               uint8_t *p = p_src;
-               uint8_t *q = p_dest;
-               uint8_t *o = p_dest;
-               uint8_t *z = p_alpha;
+               p = p_src;
+               q = p_dest;
+               o = p_dest;
+               z = p_alpha;
 
                for ( j = 0; j < width_src; j ++ )
                {
-                               uint8_t y = *p ++;
-                               uint8_t uv = *p ++;
-                               uint8_t a = ( z == NULL ) ? 255 : *z ++;
-                               float value = ( weight * ( float ) a / 255.0 );
-                               *o ++ = (uint8_t)( y * value + *q++ * ( 1 - value ) );
-                               *o ++ = (uint8_t)( uv * value + *q++ * ( 1 - value ) );
+                       Y = *p ++;
+                       UV = *p ++;
+                       a = ( z == NULL ) ? 255 : *z ++;
+                       value = ( weight * ( float ) a / 255.0 );
+                       *o ++ = (uint8_t)( Y * value + *q++ * ( 1 - value ) );
+                       *o ++ = (uint8_t)( UV * value + *q++ * ( 1 - value ) );
                }
 
                p_src += stride_src;