- if (live_signal_num == INPUT0_SIGNAL_NUM or
- live_signal_num == INPUT1_SIGNAL_NUM or
- live_signal_num == STATIC_SIGNAL_NUM) and
- (preview_signal_num == INPUT0_SIGNAL_NUM or
- preview_signal_num == INPUT1_SIGNAL_NUM or
- preview_signal_num == STATIC_SIGNAL_NUM) then
+ if (is_plain_signal(live_signal_num) or live_signal_num == STATIC_SIGNAL_NUM) and
+ (is_plain_signal(preview_signal_num) or preview_signal_num == STATIC_SIGNAL_NUM) then