*/
static int producer_get_frame( mlt_service this, mlt_frame_ptr frame, int index );
+static void mlt_producer_property_changed( mlt_service owner, mlt_producer this, char *name );
+static void mlt_producer_service_changed( mlt_service owner, mlt_producer this );
/** Constructor
*/
// Override service get_frame
parent->get_frame = producer_get_frame;
+
+ mlt_events_listen( properties, this, "service-changed", ( mlt_listener )mlt_producer_service_changed );
+ mlt_events_listen( properties, this, "property-changed", ( mlt_listener )mlt_producer_property_changed );
+ mlt_events_register( properties, "producer-changed", NULL );
}
}
return error;
}
+/** Listener for property changes.
+*/
+
+static void mlt_producer_property_changed( mlt_service owner, mlt_producer this, char *name )
+{
+ if ( !strcmp( name, "in" ) || !strcmp( name, "out" ) || !strcmp( name, "length" ) )
+ mlt_events_fire( mlt_producer_properties( this ), "producer-changed", NULL );
+}
+
+/** Listener for service changes.
+*/
+
+static void mlt_producer_service_changed( mlt_service owner, mlt_producer this )
+{
+ mlt_events_fire( mlt_producer_properties( this ), "producer-changed", NULL );
+}
+
/** Create a new producer.
*/
int mlt_producer_set_in_and_out( mlt_producer this, mlt_position in, mlt_position out )
{
+ mlt_properties properties = mlt_producer_properties( this );
+
// Correct ins and outs if necessary
if ( in < 0 )
in = 0;
}
// Set the values
- mlt_properties_set_position( mlt_producer_properties( this ), "in", in );
- mlt_properties_set_position( mlt_producer_properties( this ), "out", out );
+ mlt_events_block( properties, properties );
+ mlt_properties_set_position( properties, "in", in );
+ mlt_properties_set_position( properties, "out", out );
+ mlt_events_unblock( properties, properties );
+ mlt_events_fire( properties, "producer-changed", NULL );
return 0;
}
}
else
{
- mlt_properties properties = mlt_producer_properties( this );
- mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL );
- int count = mlt_properties_get_int( properties, "_filter_count" );
- int i;
-
// Get the frame from the implementation
result = this->get_frame( this, frame, index );
-
- // Process the frame with the attached filters
- for ( i = 0; i < count; i ++ )
- if ( filters[ i ] != NULL )
- mlt_filter_process( filters[ i ], *frame );
}
// Copy the fps and speed of the producer onto the frame
int mlt_producer_attach( mlt_producer this, mlt_filter filter )
{
- int error = this == NULL || filter == NULL;
- if ( error == 0 )
- {
- int i = 0;
- int size = 0;
- mlt_properties properties = mlt_producer_properties( this );
- mlt_filter *filters = mlt_properties_get_data( properties, "_filters", &size );
- int count = mlt_properties_get_int( properties, "_filter_count" );
-
- for ( i = 0; error == 0 && i < count; i ++ )
- if ( filters[ i ] == filter )
- error = 1;
-
- if ( error == 0 )
- {
- if ( count == size )
- {
- size += 10;
- filters = realloc( filters, size * sizeof( mlt_filter ) );
- mlt_properties_set_data( properties, "_filters", filters, size, NULL, NULL );
- }
-
- if ( filters != NULL )
- {
- mlt_properties_inc_ref( mlt_filter_properties( filter ) );
- filters[ count ++ ] = filter;
- mlt_properties_set_int( properties, "_filter_count", count );
- }
- else
- {
- error = 2;
- }
- }
- }
- return error;
+ return mlt_service_attach( mlt_producer_service( this ), filter );
}
/** Detach a filter.
int mlt_producer_detach( mlt_producer this, mlt_filter filter )
{
- int error = this == NULL || filter == NULL;
- if ( error == 0 )
- {
- int i = 0;
- int size = 0;
- mlt_properties properties = mlt_producer_properties( this );
- mlt_filter *filters = mlt_properties_get_data( properties, "_filters", &size );
- int count = mlt_properties_get_int( properties, "_filter_count" );
-
- for ( i = 0; i < count; i ++ )
- if ( filters[ i ] == filter )
- break;
-
- if ( i < count )
- {
- mlt_filter filter = filters[ i ];
- filters[ i ] = NULL;
- for ( i ++ ; i < count; i ++ )
- filters[ i - 1 ] = filters[ i ];
- mlt_properties_set_int( properties, "_filter_count", -- count );
- mlt_filter_close( filter );
- }
- }
- return error;
+ return mlt_service_detach( mlt_producer_service( this ), filter );
}
/** Retrieve a filter.
mlt_filter mlt_producer_filter( mlt_producer this, int index )
{
- mlt_filter filter = NULL;
- if ( this != NULL )
- {
- mlt_properties properties = mlt_producer_properties( this );
- mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL );
- int count = mlt_properties_get_int( properties, "_filter_count" );
- if ( index >= 0 && index < count )
- filter = filters[ index ];
- }
- return filter;
+ return mlt_service_filter( mlt_producer_service( this ), index );
}
/** Close the producer.
{
if ( this != NULL && mlt_properties_dec_ref( mlt_producer_properties( this ) ) <= 0 )
{
- mlt_properties properties = mlt_producer_properties( this );
- mlt_filter *filters = mlt_properties_get_data( properties, "_filters", NULL );
- int count = mlt_properties_get_int( properties, "_filter_count" );
-
- while( count -- )
- mlt_producer_detach( this, filters[ 0 ] );
-
this->parent.close = NULL;
if ( this->close != NULL )