int y_offset = ( int )result.h >> 1;
uint8_t *alpha = mlt_frame_get_alpha_mask( b_frame );
+ uint8_t *mask = mlt_pool_alloc( b_width * b_height );
+ uint8_t *pmask = mask;
float mix;
affine_t affine;
dz = MapZ( affine.matrix, 0, 0 );
+ if ( mask != NULL )
+ memset( mask, 0, b_width * b_height );
+
for ( y = lower_y; y < upper_y; y ++ )
{
p = q;
{
if ( alpha == NULL )
{
+ *pmask ++ = 255;
dx += dx & 1;
*p ++ = *( b_image + dy * b_stride + ( dx << 1 ) );
*p ++ = *( b_image + dy * b_stride + ( dx << 1 ) + ( ( x & 1 ) << 1 ) + 1 );
}
else
{
+ *pmask ++ = *( alpha + dy * b_width + dx );
mix = ( float )*( alpha + dy * b_width + dx ) / 255.0;
dx += dx & 1;
*p = *p * ( 1 - mix ) + mix * *( b_image + dy * b_stride + ( dx << 1 ) );
else
{
p += 2;
+ pmask ++;
}
}
q += a_stride;
}
+
+ b_frame->get_alpha_mask = NULL;
+ mlt_properties_set_data( b_props, "alpha", mask, 0, mlt_pool_release, NULL );
}
return 0;