Properties rename and dump function

[melted] / src / framework / mlt_properties.c

diff --git a/src/framework/mlt_properties.c b/src/framework/mlt_properties.c
index be4d66f..e1e6453 100644 (file)
--- a/src/framework/mlt_properties.c
+++ b/src/framework/mlt_properties.c
@@ -72,6 +72,33 @@ mlt_properties mlt_properties_new( )
        return this;
 }
 
+/** Special case - when a container (such as fezzik) is protecting another 
+       producer, we need to ensure that properties are passed through to the
+       real producer.
+*/
+
+static void mlt_properties_do_mirror( mlt_properties this, char *name )
+{
+       if ( strcmp( name, "in" ) && strcmp( name, "out" ) )
+       {
+               mlt_properties mirror = mlt_properties_get_data( this, "mlt_mirror", NULL );
+               if ( mirror != NULL )
+               {
+                       char *value = mlt_properties_get( this, name );
+                       if ( value != NULL )
+                               mlt_properties_set( mirror, name, value );
+               }
+       }
+}
+
+/** Allow the specification of a mirror.
+*/
+
+void mlt_properties_mirror( mlt_properties this, mlt_properties that )
+{
+       mlt_properties_set_data( this, "mlt_mirror", that, 0, NULL, NULL );
+}
+
 /** Inherit all serialisable properties from that into this.
 */
 
@@ -158,7 +185,10 @@ int mlt_properties_set( mlt_properties this, char *name, char *value )
 
        // Set it if not NULL
        if ( property != NULL )
+       {
                error = mlt_property_set_string( property, value );
+               mlt_properties_do_mirror( this, name );
+       }
 
        return error;
 }
@@ -251,7 +281,10 @@ int mlt_properties_set_int( mlt_properties this, char *name, int value )
 
        // Set it if not NULL
        if ( property != NULL )
+       {
                error = mlt_property_set_int( property, value );
+               mlt_properties_do_mirror( this, name );
+       }
 
        return error;
 }
@@ -277,7 +310,10 @@ int mlt_properties_set_double( mlt_properties this, char *name, double value )
 
        // Set it if not NULL
        if ( property != NULL )
+       {
                error = mlt_property_set_double( property, value );
+               mlt_properties_do_mirror( this, name );
+       }
 
        return error;
 }
@@ -303,7 +339,10 @@ int mlt_properties_set_position( mlt_properties this, char *name, mlt_position v
 
        // Set it if not NULL
        if ( property != NULL )
+       {
                error = mlt_property_set_position( property, value );
+               mlt_properties_do_mirror( this, name );
+       }
 
        return error;
 }
@@ -334,6 +373,44 @@ int mlt_properties_set_data( mlt_properties this, char *name, void *value, int l
        return error;
 }
 
+/** Rename a property.
+*/
+
+int mlt_properties_rename( mlt_properties this, char *source, char *dest )
+{
+       mlt_property value = mlt_properties_find( this, dest );
+
+       if ( value == NULL )
+       {
+               property_list *list = this->private;
+               int i = 0;
+
+               // Locate the item 
+               for ( i = 0; i < list->count; i ++ )
+               {
+                       if ( !strcmp( list->name[ i ], source ) )
+                       {
+                               free( list->name[ i ] );
+                               list->name[ i ] = strdup( dest );
+                               break;
+                       }
+               }
+       }
+
+       return value != NULL;
+}
+
+/** Dump the properties.
+*/
+
+void mlt_properties_dump( mlt_properties this, FILE *output )
+{
+       property_list *list = this->private;
+       int i = 0;
+       for ( i = 0; i < list->count; i ++ )
+               fprintf( stderr, "%s = %s\n", list->name[ i ], mlt_properties_get( this, list->name[ i ] ) );
+}
+
 /** Close the list.
 */