mlt_properties_set( props, "resource", "<tractor>" );
mlt_properties_set( props, "mlt_type", "mlt_producer" );
mlt_properties_set( props, "mlt_service", "tractor" );
+ mlt_properties_set_position( props, "in", 0 );
+ mlt_properties_set_position( props, "out", 0 );
+ mlt_properties_set_position( props, "length", 0 );
mlt_properties_set_data( props, "multitrack", multitrack, 0, ( mlt_destructor )mlt_multitrack_close, NULL );
mlt_properties_set_data( props, "field", field, 0, ( mlt_destructor )mlt_field_close, NULL );
return mlt_properties_get_data( mlt_tractor_properties( this ), "multitrack", NULL );
}
+/** Ensure the tractors in/out points match the multitrack.
+*/
+
+void mlt_tractor_refresh( mlt_tractor this )
+{
+ mlt_multitrack multitrack = mlt_tractor_multitrack( this );
+ mlt_properties properties = mlt_multitrack_properties( multitrack );
+ mlt_properties self = mlt_tractor_properties( this );
+ mlt_multitrack_refresh( multitrack );
+ mlt_properties_set_position( self, "in", 0 );
+ mlt_properties_set_position( self, "out", mlt_properties_get_position( properties, "out" ) );
+ mlt_properties_set_position( self, "length", mlt_properties_get_position( properties, "length" ) );
+}
+
/** Connect the tractor.
*/
return ret;
}
+/** Set the producer for a specific track.
+*/
+
+int mlt_tractor_set_track( mlt_tractor this, mlt_producer producer, int index )
+{
+ int error = mlt_multitrack_connect( mlt_tractor_multitrack( this ), producer, index );
+ mlt_tractor_refresh( this );
+ return error;
+}
+
+/** Get the producer for a specific track.
+*/
+
+mlt_producer mlt_tractor_get_track( mlt_tractor this, int index )
+{
+ return mlt_multitrack_track( mlt_tractor_multitrack( this ), index );
+}
+
static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
{
mlt_properties properties = mlt_frame_properties( this );