transition_composite.c: make luma and luma_invert properties mutable

git-svn-id: https://mlt.svn.sourceforge.net/svnroot/mlt/trunk/mlt@1378 d19143bc-622f-0410-bfdd-b5b2a6649095

diff --git a/src/modules/core/transition_composite.c b/src/modules/core/transition_composite.c
index 3930ecd83b871f6b87603200f906bdb413b72a7b..3725c4a62c548f0c32dd745e4ae9ab3426674a5d 100644 (file)
--- a/src/modules/core/transition_composite.c
+++ b/src/modules/core/transition_composite.c
@@ -624,7 +624,7 @@ static uint16_t* get_luma( mlt_transition this, mlt_properties properties, int w
                luma_height = height;
        }
 
-       if ( resource != NULL && strchr( resource, '%' ) )
+       if ( resource && resource[0] && strchr( resource, '%' ) )
        {
                // TODO: Clean up quick and dirty compressed/existence check
                FILE *test;
@@ -637,7 +637,19 @@ static uint16_t* get_luma( mlt_transition this, mlt_properties properties, int w
                resource = temp;
        }
 
-       if ( resource != NULL && ( luma_bitmap == NULL || luma_width != width || luma_height != height ) )
+       if ( resource && resource[0] )
+       {
+               char *old_luma = mlt_properties_get( properties, "_luma" );
+               int old_invert = mlt_properties_get_int( properties, "_luma_invert" );
+
+               if ( invert != old_invert || ( old_luma && old_luma[0] && strcmp( resource, old_luma ) ) )
+               {
+                       mlt_properties_set_data( properties, "_luma.orig_bitmap", NULL, 0, NULL, NULL );
+                       luma_bitmap = NULL;
+               }
+       }
+
+       if ( resource && resource[0] && ( luma_bitmap == NULL || luma_width != width || luma_height != height ) )
        {
                uint16_t *orig_bitmap = mlt_properties_get_data( properties, "_luma.orig_bitmap", NULL );
                luma_width = mlt_properties_get_int( properties, "_luma.orig_width" );
@@ -725,6 +737,8 @@ static uint16_t* get_luma( mlt_transition this, mlt_properties properties, int w
                mlt_properties_set_int( properties, "_luma.width", width );
                mlt_properties_set_int( properties, "_luma.height", height );
                mlt_properties_set_data( properties, "_luma.bitmap", luma_bitmap, width * height * 2, mlt_pool_release, NULL );
+               mlt_properties_set( properties, "_luma", resource );
+               mlt_properties_set_int( properties, "_luma_invert", invert );
        }
        return luma_bitmap;
 }